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[ { "doc_id": "160010815", "title": "A deep learning method for fraud detection in financial systems: poster", "abstract": "Credit card fraud has been a significant challenge ever since forgers have been inventing new ways to steal money. Thus, adaptive fraud detection methods are required to counter the forgers. Deep learning methods have been attractive candidates because of their adaptive nature to detect emerging credit card frauds. In this paper, we propose a deep learning method to adaptively detect credit card frauds by using neural networks. We experimentally evaluated our model with Kaggle dataset. The analyses results show that our methods adaptively detect credit card frauds.", "corpus_id": 160010815, "venue": "WiSec", "year": 2019, "author_names": [ "Mahmut Ogrek", "Eyup Ogrek", "Serif Bahtiyar" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "182043456", "title": "HOBA: A novel feature engineering methodology for credit card fraud detection with a deep learning architecture", "abstract": "Abstract Credit card transaction fraud costs billions of dollars to card issuers every year. A well developed fraud detection system with a state of the art fraud detection model is regarded as essential to reducing fraud losses. The main contribution of our work is the development of a fraud detection system that employs a deep learning architecture together with an advanced feature engineering process based on homogeneity oriented behavior analysis (HOBA) Based on a real life dataset from one of the largest commercial banks in China, we conduct a comparative study to assess the effectiveness of the proposed framework. The experimental results illustrate that our proposed methodology is an effective and feasible mechanism for credit card fraud detection. From a practical perspective, our proposed method can identify relatively more fraudulent transactions than the benchmark methods under an acceptable false positive rate. The managerial implication of our work is that credit card issuers can apply the proposed methodology to efficiently identify fraudulent transactions to protect customers' interests and reduce fraud losses and regulatory costs.", "corpus_id": 182043456, "venue": "Inf. Sci.", "year": 2021, "author_names": [ "Xinwei Zhang", "Yaoci Han", "Wei Xu", "Qili Wang" ], "n_citations": 44, "n_key_citations": 5, "score": 1 }, { "doc_id": "133000323", "title": "Champion challenger analysis for credit card fraud detection: Hybrid ensemble and deep learning", "abstract": "Abstract Credit card fraud detection is an essential part of screening fraudulent transactions in advance of their authorization by card issuers. Although credit card frauds occur extremely infrequently, they result in huge losses as most fraudulent transactions have large values. An adequate detection of fraud allows investigators to take timely actions that can potentially prevent additional fraud or financial losses. In practice, however, investigators can only check a few alerts per day since the investigation process can be long and tedious. Thus, the primary goal of the fraud detection model is to return accurate alerts with fewer false alarms and missed frauds. Conventional fraud detection is mainly based on the hybrid ensemble of diverse machine learning models. Recently, several studies have compared deep learning and traditional machine learning models including ensemble. However, these studies used evaluation methods without considering that the real world fraud detection system operated with the constraints: (i) the number of investigators who check the high risk transactions from the data driven scoring models are limited and (ii) the two types of misclassification, false alarms and missed frauds, have different costs. In this study, we conducted an in depth comparison between the hybrid ensemble and deep learning method to determine whether or not to adopt the latter in our partner's system that currently operates with the hybrid ensemble model. To compare the two, we introduced the champion challenger framework and the development process of the two models. After developing the two models, we evaluated them on large transaction data sets taken from our partner, a major card issuing company in South Korea. We used various practical evaluation metrics appropriate for this domain that has severe class and cost imbalances. Moreover, we deployed these models in a real world fraud detection system to check the post launch performance for one month. The challenger outperformed the champion on both in off line and post launch tests.", "corpus_id": 133000323, "venue": "Expert Syst. Appl.", "year": 2019, "author_names": [ "Eunji Kim", "Jehyuk Lee", "Hunsik Shin", "Hoseong Yang", "Sungzoon Cho", "Seung-kwan Nam", "Youngmi Song", "Jeong-a Yoon", "Jong-Il Kim" ], "n_citations": 26, "n_key_citations": 3, "score": 1 }, { "doc_id": "147707587", "title": "Deep Learning Domain Adaptation Techniques for Credit Cards Fraud Detection", "abstract": "Although the incidence of credit card fraud is limited to a small percentage of transactions, the related financial losses may be huge. This demands the design of automatic Fraud Detection Systems (FDS) able to detect fraudulent transactions with high precision and deal with the heterogeneous nature of the fraudster behavior. Indeed, the nature of the fraud behavior may strongly differ according to the payment system (e.g. e commerce or shop terminal) the country and the population segment. Given the high cost of designing data driven FDSs, it is more and more important for transactional companies to reuse existing pipelines and adapt them to different domains and contexts: this boils down to a well known problem of transfer learning.", "corpus_id": 147707587, "venue": "INNSBDDL", "year": 2019, "author_names": [ "Bertrand Lebichot", "Yann-Ael Le Borgne", "Liyun He-Guelton", "Frederic Oble", "Gianluca Bontempi" ], "n_citations": 28, "n_key_citations": 0, "score": 1 }, { "doc_id": "212706227", "title": "Credit Card Fraud Detection using Deep Learning", "abstract": "Changing technology leads to various advancements. Here we talk about online transactions that is by the means of credit cards, which leads to credit card frauds, and this paper is about making a credit card fraud detection system using Deep Learning Neural Networks. Even if the Neural Network is trained over a large number of iterations, it is not accurate enough to classify the data as fraudulent or non fraudulent because of the skewness in the dataset. We use two sampling mechanisms: Under Sampling, by reducing number of non fraudulent observations and Over Sampling, where the fraudulent class observations are duplicated. The results obtained show that these methods increase the accuracy of the prediction process.", "corpus_id": 212706227, "venue": "2019 IEEE 5th International Conference for Convergence in Technology (I2CT)", "year": 2019, "author_names": [ "Pranali Shenvi", "Neel Samant", "Shubham Kumar", "Vaishali Kulkarni" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "212636283", "title": "Benford's Law and Deep Learning Autoencoders: An approach for Fraud Detection of Credit card Transactions in Social Media", "abstract": "Due to the internet and social media age, a huge volume of ecommerce sites are using online platform for their business transactions. The advantage of e commerce and online payable sites are faster service and time saving. Majority of the customers that use ecommerce sites carry out their transactions using credit cards. But the modern fraudsters are consuming the Internet platform to attempt fraud with ease. An attempt has been made to enlighten fraud in credit card domain using Benford's Law and deep learning Autoencoders algorithm in neural networks. To test the efficiency of our model, random forest binary classification models are used as a comparison. The model shows better results for our proposed model than existing solutions in terms of recall, precision and ROC AVC curve.", "corpus_id": 212636283, "venue": "2019 4th International Conference on Recent Trends on Electronics, Information, Communication Technology (RTEICT)", "year": 2019, "author_names": [ "Kaithekuzhical Leena Kurien", "Ajeet A Chikkamannur" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "211211513", "title": "Internet Banking Fraud Detection Using Deep Learning Based on Decision Tree and Multilayer Perceptron", "abstract": "Fraud transactions have become a growing problem in the online banking sphere. As technology progresses, fraudsters also change their methods of committing fraud. There are also emerging technologies that allow fraudsters to mimic the transaction behavior of genuine customers and they also keep changing their methods so that it is difficult to detect fraud. This paper discusses the importance of fraud detection methods and compares Hidden Markov Model, Deep Learning, and Neural Network that are used to detect fraud in online banking transactions.", "corpus_id": 211211513, "venue": "2019 6th International Conference on Computing for Sustainable Global Development (INDIACom)", "year": 2019, "author_names": [ "Sonal Kataria", "Md Tabrez Nafis" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "215864169", "title": "Financial statements fraud detection from unstructured data using deep learning", "abstract": "This research paper explores the application of the Universal Language Model Fine tuning (ULMFiT) technique, a novel deep transfer learning approach in the Natural Language Processing (NLP) field, to the financial statements fraud detection task. Additionally, the artifact investigated a simpler model, represented by a one dimensional Convolutional Neural Network (CNN) Both methods have been assessed with respect to the training time and predefined evaluation metrics. Overall, ULMFiT turned out to be considerably more computationally expensive to train and achieved an accuracy of 77% with F measure of 13% if used with a decision boundary of 0.5, and accuracy of 59% with F measure of 42% if calculated with a threshold of 0.2. In contrast, CNN model trained significantly faster and obtained the following metrics: accuracy of 82% with F measure of 42% for threshold 0.5, and accuracy of 83% with F measure of 58% for threshold 0.2. As a result, ULMFiT has been outperformed by one dimensional CNN on all examined metrics. The results are reported by using two different values for decision boundary due to the precision recall trade off, depending on the use case. In addition, this thesis investigated the impact of data preprocessing. The findings have shown that removing all numbers and special symbols with supplementary text truncation, limiting the sequence length, had a positive effect on both models, mentioned above.", "corpus_id": 215864169, "venue": "", "year": 2019, "author_names": [ "Irina Korchagina" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "46594693", "title": "Credit Card Fraud Detection using Deep Learning based on Auto Encoder and Restricted Boltzmann Machine", "abstract": "Frauds have no constant patterns. They always change their behavior; so, we need to use an unsupervised learning. Fraudsters learn about new technology that allows them to execute frauds through online transactions. Fraudsters assume the regular behavior of consumers, and fraud patterns change fast. So, fraud detection systems need to detect online transactions by using unsupervised learning, because some fraudsters commit frauds once through online mediums and then switch to other techniques. This paper aims to 1) focus on fraud cases that cannot be detected based on previous history or supervised learning, 2) create a model of deep Auto encoder and restricted Boltzmann machine (RBM) that can reconstruct normal transactions to find anomalies from normal patterns. The proposed deep learning based on auto encoder (AE) is an unsupervised learning algorithm that applies backpropagation by setting the inputs equal to the outputs. The RBM has two layers, the input layer (visible) and hidden layer. In this research, we use the Tensorflow library from Google to implement AE, RBM, and H2O by using deep learning. The results show the mean squared error, root mean squared error, and area under curve.", "corpus_id": 46594693, "venue": "", "year": 2018, "author_names": [ "Apapan Pumsirirat", "Liu Yan" ], "n_citations": 72, "n_key_citations": 3, "score": 0 }, { "doc_id": "211242648", "title": "Fraud Detection using Machine Learning and Deep Learning", "abstract": "Frauds are known to be dynamic and have no patterns, hence they are not easy to identify. Fraudsters use recent technological advancements to their advantage. They somehow bypass security checks, leading to the loss of millions of dollars. Analyzing and detecting unusual activities using data mining techniques is one way of tracing fraudulent transactions. transactions. This paper aims to benchmark multiple machine learning methods such as k nearest neighbor (KNN) random forest and support vector machines (SVM) while the deep learning methods such as autoencoders, convolutional neural networks (CNN) restricted boltzmann machine (RBM) and deep belief networks (DBN) The datasets which will be used are the European (EU) Australian and German dataset. The Area Under the ROC Curve (AUC) Matthews Correlation Coefficient (MCC) and Cost of failure are the 3 evaluation metrics that would be used.", "corpus_id": 211242648, "venue": "2019 International Conference on Computational Intelligence and Knowledge Economy (ICCIKE)", "year": 2019, "author_names": [ "Pradheepan Raghavan", "Neamat El Gayar" ], "n_citations": 10, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "55174486", "title": "Psychological distance of climate change and mental health risks assessment of smallholder farmers in Northern Ghana: Is habituation a threat to climate change?", "abstract": "Abstract Although strong evidence shows climate change has physical impacts on human health, the mental health impacts appear unclear. The study aims to understand and explain the dynamic correlates between climate change and farmers' emotional regulation practices, given psychological distance. Using 180 smallholder farmers in Northern Ghana, structural equation linear regression analysis showed that given psychological distance (geographical, social) different climate change indicators significantly influenced different emotional regulation practices among farmers. Although, studies show an association between climate change and climate change adaptation practices, the study revealed that, given psychological distance, emotional regulations of farmers predicted their preferences for different climate change adaptation techniques. It is concluded that the influence of climate change on farmers' emotional regulation practices seems to predispose them to future mental (emotional) health problems. Emotional regulation also appears to be a significant factor that climate change and mental health interventionists need to pay attention to.", "corpus_id": 55174486, "venue": "", "year": 2018, "author_names": [ "Jeremiah Wezenamo Acharibasam", "Samuel Weniga Anuga" ], "n_citations": 16, "n_key_citations": 1, "score": 1 }, { "doc_id": "41099260", "title": "Occupational exposure to pesticide and associated health problems in Kenya s floriculture industry", "abstract": "Background: Pesticides are widely used in agricultural production to prevent or control pests, diseases, weeds, and other plant pathogens in an effort to reduce or eliminate yield losses and maintain high product quality. Although pesticides are developed through very strict regulation processes to function with reasonable certainty and minimal impact on human health. Non protective work practices followed by farm workers during spraying of pesticides lead to occupational exposure among them. Despite their popularity and extensive use, pesticides serious concerns about health risks arising from the exposure of farmers when mixing and applying pesticides or working in treated fields. Objective: This was a comparative prospective cohort study to investigate Illnesses and symptoms associated with pesticide exposure among floricultural workers. Materials and Methods: A questionnaire based survey was conducted using structured interviews, multiple visits, and direct field observations among study subjects at baseline and every three months consecutively for forty eight (48) months and same thing for clinical examination. Results: Most of the respondents reported getting sick (53% only 31% of them received medical attention. Majority 58% reported that sickness was as a result of occupational exposure to pesticides during application in the field. A significant proportion of the respondents fifty three percent (53% complained of coughing, sneezing, dyspnea and wheezing while fifty one percent (51% reported having skin rash, itching and other skin conditions. Significant proportion forty nine percent (49% complained of itchy, painful and tearing eyes. Level of training, Occupation, duration of handling pesticide was significant and strong predictor of reported illnesses. Conclusion: Unsafe occupational exposure to pesticides causes work related disease symptoms among floricultural workers.", "corpus_id": 41099260, "venue": "", "year": 2016, "author_names": [ "Koros K Kipsengeret", "James Mucunu Mbaria", "Gerald Mwangi Muchemi", "Philip Mwanzia Kitala", "L W Kanja" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "80482490", "title": "97 Health problem of indian farmers due to excessive heat exposure and preventive measures", "abstract": "Introduction India is primarily an agrarian economy as farming is one of the most important occupations in country. However numbers of studies have classified farming as a risky and hazardous job because of the nature of farm work. Farm workers are particularly at higher risk of developing health problems. The drastic change in the world wide climate has created too much problems among farmers. Most of farm operations in India are still accomplished manually under direct sunshine. These entire factors, makes farm operation quite dangerous. The exposure to hot occupational environment remains a persistent impediment to improve productivity and problems affecting health. Health problems that result from heat stress are known as heat disorders. Methods The study was undertaken to find out the health problems experienced by farmers and to design, develop and disseminate PPE to safe guard farmers from the impact of excessive heat. Results It was revealed that majority of farmers were working for more than 7 hours in squatting and bending position under direct sunshine which was promoting heat disorders resulting from heavy physical work leading to loss of fluid and salt resulting in heat cramp, heat exhaustion,etc, Prevalence of above factors is more common among farmers due to unawareness and lack of knowledge about associated heat exposure risks, leading to poor adaption of preventive and protective measures. Further, incidence of MSDs among the farmers was reported by majority. The long working hours and posture adopted resulted more in body pain/discomfort. While disseminating the PPE, the acceptability among the farm workers was reported to be very high. Conclusion The pace with which global average temperature is rising, there arise a need to protect the outdoor workers from heat related illnesses. Creating awareness and developing of PPE to safeguard has now become a matter of concern worldwide.", "corpus_id": 80482490, "venue": "", "year": 2018, "author_names": [ "Kirti Kesarwani", "Promila Sharma" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "54012929", "title": "Factors Associated with Helminthiasis among Vegetable Farmers in Barito Kuala District", "abstract": "Background and Objective: Infections caused by soil transmitted helminth (STH) are one of the global health problems. Farmers were one group that has a high risk infected by helminth. This study aimed to determine the association of the use of personal protective equipment (PPE) and other factors with helminthiasis among vegetable farmers in Barito Kuala District, South Kalimantan Province. Materials and Methods: Population and sample in this study were vegetable farmers and these samples were taken randomly. This study was an analytical study with a case control design. Chi square, binary logistic regression and SPSS was used for statistical analysis. Results: This study showed male farmers, elementary educated farmers and these farmers do not have hands washing habit. Farmers who have to consume of raw foods habit more than once per week have a greater risk of getting infected by helminth. This study showed more helminth infections occur in farmers who do not use personal protective equipment. Conclusion: Current study found that helminthiasis was significantly associated with the use of complete personal protective equipment, gender, education level, hand washing habit and habit of consuming raw foods. It was advisable for vegetable farmers to always use personal protective equipment when farmed and to keep good personal hygiene.", "corpus_id": 54012929, "venue": "", "year": 2018, "author_names": [ "Hadi Prayitno", "Aprizal Satria Hanafi", "Qomariyatus Sholihah" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "24481633", "title": "A Cross Sectional Study of Stressors Among Farmers in Eastern North Carolina", "abstract": "BACKGROUND Agriculture is a hazardous, stressful occupation that can adversely affect farmers' health. Identifying stressors among farmers may help health professionals improve health outcomes by developing targeted intervention strategies and services. METHODS Over a 4 month period, we conducted a cross sectional study of 128 farmers in an economically disadvantaged, 29 county region of Eastern North Carolina. We used a modified version of the Farm Ranch Stress Inventory to measure farmers' self reported reactions to potential stressors. RESULTS The majority of farmers surveyed were aged 40 59 years, had farmed for more than 20 years, and worked more than 40 hours per week on the farm. Large proportions of respondents identified the following factors as \"very stressful\" concern about the weather (60.2% concern over the future of the farm (29.7% outsiders not understanding the nature of farming (25.2% problems with machinery (23.4% market prices for crops/livestock (45.3% taxes (38.3% health care costs (32.5% and not having enough time to spend with family in recreation (13.3% Experiencing 8 or more factors as \"very stressful\" was found to be positively associated with working more than 40 hours per week on the farm (P .008) and with being a farm manager or a farm worker who does not operate equipment (P .001) CONCLUSIONS Information about perceived stressors among farmers may help health professionals develop targeted interventions for reducing stress. More research is needed to better evaluate health outcomes, to reduce farm related injuries, and to improve psychosocial well being.", "corpus_id": 24481633, "venue": "North Carolina Medical Journal", "year": 2014, "author_names": [ "Gregory D Kearney", "Ann P Rafferty", "Lauren R Hendricks", "Daniel Landon Allen", "Robin Tutor-Marcom" ], "n_citations": 26, "n_key_citations": 0, "score": 0 }, { "doc_id": "41435916", "title": "Pesticide usage and its association with health symptoms among farmers in rural villages in West Java, Indonesia.", "abstract": "The improper handling of pesticides in agriculture has caused serious health problems in many developing countries. In this study, we report the pesticide usage condition among Indonesian farmers and its association with symptoms of pesticide toxicity. A questionnaire survey on personal history regarding agricultural labor, pesticide storage and disposal, pesticide use and health history was conducted using a structured questionnaire in rural Sundanese villages in West Java, Indonesia. The most frequently used pesticides included dithiocarbamates, pyrethroids and organophosphates. In approximately 80% of sprayings, category II pesticides (World Health Organization (WHO) categorization; \"moderately hazardous\" were used. Many of the subject farmers worked in a highly unsafe occupational environment; protective measures and safe handling were rarely observed, whereas smoking and drinking during spraying were frequently practiced. Correlation analysis revealed that farmers who wore a long sleeve shirt and headgear showed health symptoms less frequently. Moreover, farmers who had skin contact with the spray solution during measuring or mixing (excluding the hands) who wore wet clothing (skin exposure to pesticide) and who smoked and rubbed their eyes during spraying showed more symptoms. Among these factors, headgear use, wearing wet clothing (skin exposure to pesticide) and smoking during spraying were the significant determining factors for developing health symptoms. Preventing such behaviors will be an effective method of reducing health problems among the subject farmers.", "corpus_id": 41435916, "venue": "Environmental sciences an international journal of environmental physiology and toxicology", "year": 2007, "author_names": [ "Makiko Sekiyama", "Mika Tanaka", "Budhi Gunawan", "Oekan S Abdoellah", "Chiho Watanabe" ], "n_citations": 37, "n_key_citations": 1, "score": 1 }, { "doc_id": "51719258", "title": "Job Resources and Work Engagement among Finnish Dairy Farmers", "abstract": "ABSTRACT Objectives: The aims of this study were to examine job resources, work engagement and Finnish dairy farmers' preferences concerning methods to enhance overall well being while working on farms. Methods: A postal survey yielded 265 completed questionnaires from 188 dairy farms. The sample was assessed as representative of Finnish dairy farmers. Exploratory factor analysis and a linear mixed model were utilized during the data analyzing process. Results: The variables lowering work engagement were stressors related to the workload and problems with health. Elevated work engagement was associated with the factors work with farm animals and family. The most important resource variables were \"child or children,\" \"own family,\" and \"animal health.\" Female dairy farmers considered resource variables related to the family, love, and work with cattle as significantly more important than male dairy farmers. Male dairy farmers experienced higher work engagement and, concerning the dimensions, especially higher dedication and absorption than male respondents in a reference sample of workers in difference occupations. A sustainable farm economy and the possibility to have a holiday period were the most important methods to improve overall well being on dairy farms. Conclusion: The results indicate that the family, working with cattle, healthy farm animals, a reasonable workload, and a sustainable farm economy have the capacity to create positive impacts on well being among dairy farmers. Well being on farms is a part of sustainable food production.", "corpus_id": 51719258, "venue": "Journal of agromedicine", "year": 2018, "author_names": [ "Marja Kristiina Kallioniemi", "Janne Kaseva", "Christina Lunner Kolstrup", "Ahti Jarkko Kalervo Simola", "Hanna-Riitta Kymalainen" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "47008589", "title": "Using Action Research to prevent work related illness among rubber farmers in Northeastern Thailand", "abstract": "OBJECTIVES This research aimed to enhance self care among rubber farmers for preventing work related illness. DESIGN AND SAMPLE The project used Action Research's four phase iterative process: fact finding to understand the problems, action planning, action plan implementation, and evaluation and reflection on action plan impacts. Sixty six participants (46 rubber farmers and 20 community stakeholders) were purposively recruited from two villages in the top 10 rubber producing provinces in Northeastern Thailand. MEASURES Demographic and work related illness data were collected in face to face structured interviews, Focus group interviews and participant observations were used to collect data in each project phase. Night group meetings were held throughout the research phases. The intervention included training workshops and establishing a community health education team for ongoing farmer support. RESULTS Results showed improved farmer self care behaviors and establishment of a community health education team to encourage farmers to care for themselves properly. CONCLUSION Community nurses, other health personnel, and the Thai government can build on initiatives like this to strengthen occupational health and safety practices and services policy for rubber farmers.", "corpus_id": 47008589, "venue": "Public health nursing", "year": 2018, "author_names": [ "Wijitra Sena", "Kessarawan Nilvarangkul", "Kesinee Saranrittichai", "John F Smith", "Teerasak Phajan", "Sansanee Seetangkham" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "215758118", "title": "Gender Differences in Depressive Symptoms and Work Environment Factors among Dairy Farmers in Japan", "abstract": "Dairy farmers are more likely than nonfarmers to experience high demands and are at risk of mental health problems. However, there is scarce evidence on the current state of psychological health and related factors among dairy farmers, and the knowledge of potential gender differences is limited. This study aimed to examine the prevalence of depressive symptoms assessed using the Center for Epidemiologic Studies Depression Scale (CES D) and its association with work environment characteristics and to identify gender differences. Data were collected from 273 dairy farmer participants (169 males and 104 females) in Japan. Females were more likely to be depressed, and young and middle aged women appeared to be at risk of depression. For both genders, a demanding work environment was related to depression. There were some gender differences; for example, worries about the harmful effects of pesticides on health and the balancing of family roles and work roles were related to depression in men, while worries about one's financial situation and the health status of livestock were associated with depression in women. Females benefited from support through direct interaction, while males benefited from involvement in social activities. These findings will contribute to the development of a gender specific approach to promote psychological health in the dairy farming community.", "corpus_id": 215758118, "venue": "International journal of environmental research and public health", "year": 2020, "author_names": [ "Miho Sato", "Hiromi Kato", "Makiko Noguchi", "Hiroshi Ono", "Kuniyuki Kobayashi" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "219724274", "title": "Longitudinal Study of Metabolic Biomarkers among Conventional and Organic Farmers in Thailand", "abstract": "The aim of this longitudinal study is to assess how pesticide use may impact metabolic biomarkers by collecting and comparing data from conventional (n 13) and organic farmers (n 225) every eight months for four rounds. Farmers were interviewed about family health history, food consumption behaviors, self reported health problems, agricultural activities, and history of pesticide use. Systolic and diastolic blood pressure and body mass index (BMI) were measured. Blood samples were collected for total cholesterol, low density lipoprotein (LDL) high density lipoprotein (HDL) blood glucose, and triglycerides. A linear mixed model with random intercepts for subjects was used to compare the metabolic biomarkers between conventional and organic farmers and to examine the impact of the number of pesticide spray days for all four rounds after controlling for covariates. The conventional farmers reported using insecticides, herbicides, and fungicides. The marginal means for chemical farmers were significantly higher than organic farmers for total cholesterol, LDL, HDL, glucose, systolic and diastolic blood pressure, BMI, and waist circumference. Increasing the number of days of spraying either insecticides or fungicides was associated with an increase in HDL, LDL, and cholesterol levels. Increasing the number of herbicide spray days was associated with an increase in systolic and diastolic blood pressure and a decrease in BMI. These findings suggest that pesticide using conventional farmers may be at higher risk of metabolic disease in the future.", "corpus_id": 219724274, "venue": "International journal of environmental research and public health", "year": 2020, "author_names": [ "Pornpimol Kongtip", "Noppanun Nankongnab", "Nichcha Kallayanatham", "Ritthirong Pundee", "Jutharak Yimsabai", "Susan Woskie" ], "n_citations": 7, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "3758326", "title": "Meibomian Gland Disease: The Role of Gland Dysfunction in Dry Eye Disease.", "abstract": "TOPIC To discuss the pathology, causes, and ocular surface impact of meibomian gland disease (MGD) as well as its relationship to dry eye. CLINICAL RELEVANCE MGD is a common disorder with various contributing mechanisms and clinical manifestations. Understanding MGD pathophysiology and its relationship to dry eye is important in order to optimize diagnosis and treatment algorithms. METHODS A review of current literature was performed to discern MGD in terms of pathophysiology, risk factors, and ocular surface impact, and the relationship to dry eye. RESULTS Meibomian gland obstruction and meibocyte depletion are important components of MGD. Many pathologies can disrupt function of meibomian glands, ranging from congenital to acquired causes. Once gland disruption occurs, the quality and quantity of meibum is altered, with a negative impact on the ocular surface. Increased tear evaporation, tear hyperosmolarity, increased ocular surface staining, increased inflammation, symptomatic irritation of the eyelid and globes, as well as decreased visual acuity have all been observed. CONCLUSION MGD leads to changes in meibum quality and quantity that can cause evaporative dry eye and ocular surface disruption, leading to dry eye symptoms in some individuals.", "corpus_id": 3758326, "venue": "Ophthalmology", "year": 2017, "author_names": [ "Priyanka Chhadva", "Raquel Goldhardt", "Anat Galor" ], "n_citations": 93, "n_key_citations": 4, "score": 1 }, { "doc_id": "53568927", "title": "Therapeutic efficacy of intense pulsed light in patients with refractory meibomian gland dysfunction.", "abstract": "PURPOSE To evaluate the efficacy and safety of intense pulsed light (IPL) combined with meibomian gland expression (MGX) for treatment of refractory meibomian gland dysfunction (MGD) METHODS Ninety eyes of 45 patients were randomly assigned to receive either the combination of IPL and MGX or MGX alone (control) Each eye underwent eight treatment sessions at 3 week intervals. Parameters were evaluated before and during treatment as well as at 3 11 weeks after the last treatment session. Measured parameters included the Standard Patient Evaluation of Eye Dryness (SPEED) questionnaire score, noninvasive breakup time (NIBUT) fluorescein breakup time (BUT) lipid layer grade, lipid layer thickness (LLT) lid margin abnormalities, corneal and conjunctival fluorescein staining (CFS) score, meibum grade, and meiboscore. RESULTS A significant improvement in lipid layer grade was apparent in the IPL MGX group from 6 to 32 weeks after treatment onset (adjusted P 0.001) but was not observed in the control group. The IPL MGX group also showed significant improvements in LLT, NIBUT, BUT, lid margin abnormalities, and meibum grade compared with the control group at 24 and 32 weeks (adjusted P 0.001) as well as significant improvements in the SPEED score at 32 weeks (adjusted P 0.044) and in CFS score at 24 (adjusted P 0.015) and 32 (adjusted P 0.006) weeks. CONCLUSIONS The combination of IPL and MGX improved homeostasis of the tear film and ameliorated ocular symptoms in patients with refractory MGD and is thus a promising modality for treatment of this condition.", "corpus_id": 53568927, "venue": "The ocular surface", "year": 2019, "author_names": [ "Reiko Arita", "Shima Fukuoka", "Naoyuki Morishige" ], "n_citations": 43, "n_key_citations": 2, "score": 1 }, { "doc_id": "73499902", "title": "The optimum temperature for the heat therapy for meibomian gland dysfunction.", "abstract": "PURPOSE Numerous devices have been developed to warm the eyelid as a therapy for Meibomian gland dysfunction. The optimum temperature for such therapy was determined. METHODS Meibum lipid disorder versus temperature was calculated from previously published phase transition parameters measured using infrared spectroscopy. Phase transitions parameters were calculated from meibum obtained from donors with Meibomian gland dysfunction (MMGD) donors who were susceptible to dry eye after hematopoietic stem cell transplantations (MHSCT) and meibum from donors without dry eye (Mn) RESULTS Heating Mn to 40 degC increases the lipid disorder by 20.4% 90% Heating the meibum another 4deg increases the disorder to 95% MMGD is 73.2% disordered with no heating. Heating MMGD to 41.5 degC increases the disorder by 26.8% 90% disordered. Heating MMGD another 5.1 degC increases the disorder to 95% As MHSCT is much more ordered, 56.9% disordered compared with Mn and MMGD, a higher temperature above safety limits, 52 and 59 degC is need to disorder MHSCT to 90 and 95% disorder. CONCLUSIONS Heating the eye lid above the phase transition temperature of meibum increases the disorder of meibum lipid which could ameliorate dry eye symptoms. The optimum temperature for disordering Mn and MMGD to 90% maximum disorder is 40 and 41.5 degC, respectively. Safety issues and discomfort should be considered in obtaining an optimal level of disorder, especially for severe cases of dry eye.", "corpus_id": 73499902, "venue": "The ocular surface", "year": 2019, "author_names": [ "Douglas Borchman" ], "n_citations": 25, "n_key_citations": 1, "score": 1 }, { "doc_id": "115197866", "title": "Intense Pulsed Light for the Treatment of Dry Eye Owing to Meibomian Gland Dysfunction.", "abstract": "Dry eye disease (DED) is an increasingly common condition and one of the most common complaints of patients. The vast majority of DED is caused by the so called \"evaporative\" subtype, that is mainly caused by meibomian gland dysfunction (MGD) Intense pulsed light (IPL) devices employ high intensity pulses of polychromatic lights with a broad range of wavelength (515 1200 nm) IPL treatment has been utilized for years in the field of dermatology, and then its use was applied to ophthalmology for the treatment of MGD. Recently, a new device employing IPL was specifically designed for the periocular application. This procedure determines the thermal selective coagulation and ablation of superficial blood vessels and telangiectasias of the eyelids skin, reducing the release of inflammatory mediators and tear cytokines levels, and improving meibomian glands outflow. IPL treatment is noninvasive and easy to perform, lasts for only a few minutes and can be conducted in an office setting. In the present study, 19 patients underwent 3 sessions of IPL treatment. After treatment, both mean noninvasive break up time and lipid layer thickness grade significantly increased, as a result of an improvement of tear film stability and quality, respectively. Conversely, no statistically significant changes were found for meibomian gland loss and tear osmolarity. Furthermore, the vast majority of the treated patients (17/19; 89.5% of the total) perceived an improvement of their ocular discomfort symptoms after IPL treatment. Although IPL treatment provides an improvement of both ocular surface parameters and ocular discomfort symptoms after one cycle of three sessions, regular repeated treatments are usually required to maintain the persistence over the time of its beneficial effects.", "corpus_id": 115197866, "venue": "Journal of visualized experiments JoVE", "year": 2019, "author_names": [ "Luca Vigo", "Giuseppe Giannaccare", "Stefano Sebastiani", "Marco Pellegrini", "Francesco Carones" ], "n_citations": 19, "n_key_citations": 4, "score": 0 }, { "doc_id": "160010768", "title": "Meibum Expressibility Improvement as a Therapeutic Target of Intense Pulsed Light Treatment in Meibomian Gland Dysfunction and Its Association with Tear Inflammatory Cytokines", "abstract": "Many recent studies have demonstrated the efficacy of intense pulsed light (IPL) for the treatment of meibomian gland dysfunction (MGD) however, its effective treatment targets have not yet been elucidated. This study aimed to investigate the baseline characteristics associated with an improvement in symptoms after IPL treatment; to examine the course of change in inflammatory tear cytokines, meibomian gland function, and tear stability; and to investigate the correlation between cytokines and ocular surface parameters. Thirty participants underwent three sessions of IPL treatment. During each examination, tear film lipid layer interferometry, meibography, tear meniscus height measurement, tear sampling, and slit lamp examination were performed, and the Ocular Surface Disease Index (OSDI) questionnaire was administered. Meibum quality, meibum expressibility, lid margin abnormality, tear film break up time (TBUT) ocular surface staining, and the OSDI significantly improved after treatment. Poor meibum expressibility and short TBUT were associated with greater recovery in the OSDI after IPL. Tear levels of IL 4, IL 6, IL 10, IL 17A, and TNF a decreased after IPL, and IL 6, and TNF a were correlated with the improvement in meibum expressibility. Therefore, IPL treatment improved meibomian gland function, stabilized the tear film, and decreased ocular surface inflammation. Patients with obstructive MGD and tear instability were more likely to experience an improvement in ocular discomfort after IPL treatment.", "corpus_id": 160010768, "venue": "Scientific Reports", "year": 2019, "author_names": [ "Moonjung Choi", "Soo Jung Han", "Yong Woo Ji", "Young Joon Choi", "Ikhyun Jun", "Mutlaq Hamad Alotaibi", "Byung Yi Ko", "Eung Kweon Kim", "Tae-im Kim", "Sang Min Nam", "Kyoung Yul Seo" ], "n_citations": 23, "n_key_citations": 2, "score": 0 }, { "doc_id": "81157779", "title": "Intense Pulsed Light Treatment for Meibomian Gland Dysfunction in Skin Types III/IV.", "abstract": "Background and objective: Several cases of meibomian gland dysfunction (MGD) particularly the moderate to severe ones, are considered intractable by traditional therapy. Intense pulsed light (IPL) therapy has emerged as a new choice for management of MGD in recent years, given that use of lasers and optical treatments is typically challenging in patients with darker skin types. Methods: IPL treatment for MGD is administered in the periorbital area with the thinnest skin in our body, which has an inherent risk of skin side effects. We evaluated the effects and safety of this therapy in Chinese patients with Fitzpatrick skin types III IV. Forty MGD patients were randomly administered IPL treatment with two types of parameters in the left and the right eye. Results: Results revealed that both parameter settings of IPL treatment could gradually and effectively raise the tear breakup time (BUT) and ocular surface disease index (OSDI) score. However, younger patients showed better improvement in BUT (F 19.54, p 0.01) and OSDI (F 9.93, p 0.01) compared with older patients. Conclusions: Overall, results showed that IPL treatment is safe and effective in MGD patients with skin types III IV.", "corpus_id": 81157779, "venue": "Photobiomodulation, photomedicine, and laser surgery", "year": 2019, "author_names": [ "Dan Li", "Shi-bin Lin", "Biao Cheng" ], "n_citations": 16, "n_key_citations": 0, "score": 0 }, { "doc_id": "67860514", "title": "Effect of Intense Pulsed Light Therapy on Tear Proteins and Lipids in Meibomian Gland Dysfunction", "abstract": "Purpose: To assess the effect of a novel intense pulsed light (IPL) therapy on tear proteins and lipids in eyes with Meibomian gland dysfunction (MGD) Methods: Twenty four eyes of 12 patients with MGD were recruited and received five overlapping flashes (565 1400 nm) directed at the lower eyelid. The IPL parameters include intensity: 2.5 to 6.5 J/cm2, voltage: 100 to 240 V, frequency: 50 to 60 Hz, input: 16 W, maximum optical energy: 23 J, pulse duration: <2.0 ms, and repetition time: 1 3.5 s. Tear samples were evaluated immediately before and 2 weeks after IPL therapy and included measurements of protein concentration, electrophoretic mobility by using sodium dodecyl sulfate polyacrylamide gel electrophoresis, lipid profile assessments, and thin layer chromatography (TLC) for phospholipids. Results: Significant improvements were observed in tear protein concentrations and molecular weight after IPL therapy. The most pronounced effect was in the molecular weight of tear lysozyme, lactoferrin, and albumin. Tear lipids showed an improvement in the concentrations of total lipids, triglycerides, cholesterol, and phospholipids. On TLC, the tears in patients with MGD had significantly lower amounts of anionic phosphatidylethanolamine, phosphatidylinositol, and phosphatidylserine but amounts zwitterionic neutral phospholipid phosphatidylcholine were normal. These anionic phospholipids showed obvious recovery after IPL therapy. Conclusion: IPL therapy is effective in eyes with MGD. It improved tear protein and lipid content and composition. The anionic phospholipids were more responsive to IPL therapy than were the other zwitterionic phospholipids.", "corpus_id": 67860514, "venue": "Journal of ophthalmic vision research", "year": 2019, "author_names": [ "Salwa Abdelkawi Ahmed", "Ibraheim Mohi Eldin Taher", "Dina Fouad Ghoneim", "Abdelhakim Mohamed Safwat" ], "n_citations": 15, "n_key_citations": 1, "score": 0 }, { "doc_id": "58350634", "title": "Meibomian Gland Morphology Is a Sensitive Early Indicator of Meibomian Gland Dysfunction.", "abstract": "PURPOSE To investigate the relationship between meibomian gland (MG) morphology and clinical dry eye tests in patients with meibomian gland dysfunction (MGD) DESIGN Cross sectional study. SUBJECTS Total 538 MGD patients and 21 healthy controls. METHODS MG loss on meibography images of upper (UL) and lower lids (LL) was graded on a scale of 0 (lowest degree of MG loss) to 3. MG length, thickness, and interglandular space in the UL were measured. Clinical tests included meibum expression and quality, tear film break up time, ocular staining, osmolarity, Schirmer I, blink interval timing, and Ocular Surface Disease Index (OSDI) questionnaire. RESULTS Mean UL and LL meibogrades were significantly higher in MGD patients compared to controls (P .001 for UL and LL) The sensitivity and specificity of the meibograde as a diagnostic parameter for MGD was 96.7% and 85% respectively. Schirmer I was significantly increased in MGD patients with meibograde 1 compared to patients with meibograde 0, 2, and 3 in the UL (P .05) MG thickness increased with higher meibograde (P .001) MG morphology correlated significantly but weakly with several clinical parameters (P .05) OSDI did not correlate with any MG morphologic parameter. CONCLUSIONS Grading of MG loss using meibograde effectively diagnoses MGD. Compensatory mechanisms such as increased aqueous tear production and dilation of MGs make early detection of MGD difficult by standard clinical measures of dry eye, whereas morphologic analysis of MGs reveals an early stage of MGD, and therefore represents a complementary clinical parameter with diagnostic potential.", "corpus_id": 58350634, "venue": "American journal of ophthalmology", "year": 2019, "author_names": [ "Muhammed Yasin Adil", "Jiaxin Xiao", "Jonatan Olafsson", "Xiangjun Chen", "Neil S Lagali", "Sten Raeder", "Oygunn Aass Utheim", "Darlene A Dartt", "Tor Paaske Utheim" ], "n_citations": 19, "n_key_citations": 0, "score": 0 }, { "doc_id": "202003062", "title": "Management of Meibomian Gland Dysfunction: A Review.", "abstract": "Meibomian gland dysfunction (MGD) is the leading cause of evaporative dry eye disease and is one of the most common conditions encountered by eye care providers. MGD is characterized by obstruction of the meibomian gland terminal ducts and/or changes in their glandular secretion, resulting in changes in tear film stability, inflammation, and symptoms of irritation. There is no gold standard treatment for MGD, but rather a diversity of options. Conservative measures include warm compresses and lid hygiene, but there is growing interest and need for medical treatments and procedures. Potential medical treatments include antibiotics, non steroidal and steroidal anti inflammatory agents, essential fatty acid supplementation, hormone therapy, and control of Demodex infestation. Procedures include intraductal meibomian gland probing, the use of electronic heating devices, intense pulsed light therapy, and intranasal neurostimulation. We provide an update on MGD treatments based on recent studies.", "corpus_id": 202003062, "venue": "Survey of ophthalmology", "year": 2019, "author_names": [ "Saama Sabeti", "Ahmad Kheirkhah", "Jia Yin", "Reza Dana" ], "n_citations": 21, "n_key_citations": 0, "score": 0 }, { "doc_id": "162170597", "title": "Human Meibum Cholesteryl and Wax Ester Variability With Age, Sex, and Meibomian Gland Dysfunction", "abstract": "Purpose Relationships between tear film lipid (TFL) layer composition, structure, and function could provide insight into the etiology of dry eye. The molar ratio of cholesteryl ester (CE)/wax ester (WE) was measured in meibum from normal donors (Mn) and compared with meibum from donors with meibomian gland dysfunction (MMGD) Methods CE/WE was measured using nuclear magnetic resonance spectroscopy. Results CE/WE was distributed into two populations with 81% distributed near 0.55 and 19% near 0.3. CE/WE were higher in donors 13 to 19 years old compared with donors 1 to 12 years old and 20 to 88 years old. CE/WE for MMGD was 30% lower, 0.34 0.04, compared with Mn, 0.49 0.04. There were no sex differences in CE/WE. There were no significant racial differences between the CE/WE ratios for Asians and Caucasians. The CE/WE ratio was higher for blacks and lower for Hispanics compared to Caucasians. Due to the small number sampled, confirmation of the later racial results is needed. The packing of CE and WE in the TFL layer was proposed. Conclusions Although MMGD contains much less CE than Mn, factors other than the CE content, such as the levels of saturation and/or proteins, may be responsible for the higher order of MMGD. In addition to saturation, CE could contribute to the increase in order of Mn between 0 and 20 years of age. Observed changes in the meibum content of CE alone is not likely to influence tear film stability.", "corpus_id": 162170597, "venue": "Investigative ophthalmology visual science", "year": 2019, "author_names": [ "Douglas Borchman", "Aparna Ramasubramanian", "Gary N Foulks" ], "n_citations": 22, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "111625781", "title": "A high efficiency, low noise power solution for a dual channel GNSS RF receiver", "abstract": "A high efficiency low noise power solution for a dual channel GNSS RF receiver is presented.The power solution involves a DC DC buck converter and a followed low dropout regulator(LDO).The pulsewidth modulation(PWM) control method is adopted for better noise performance.An improved low power highfrequency PWM control circuit is proposed,which halves the average quiescent current of the buck converter to 80mA by periodically shutting down the OTA.The size of the output stage has also been optimized to achieve high efficiency under a light load condition.In addition,a novel soft start circuit based on a current limiter has been implemented to avoid inrush current.Fabricated with commercial 180 nm CMOS technology,the DC DC converter achieves a peak efficiency of 93.1%under a 2 MHz working frequency.The whole receiver consumes only 20.2 mA from a 3.3 V power supply and has a noise figure of 2.5 dB.", "corpus_id": 111625781, "venue": "", "year": 2012, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "106655932", "title": "A high efficiency, low noise power solution for a dual channel GNSS RF receiver", "abstract": "A high efficiency low noise power solution for a dual channel GNSS RF receiver is presented. The power solution involves a DC DC buck converter and a followed low dropout regulator (LDO) The pulse width modulation (PWM) control method is adopted for better noise performance. An improved low power high frequency PWM control circuit is proposed, which halves the average quiescent current of the buck converter to 80 A by periodically shutting down the OTA. The size of the output stage has also been optimized to achieve high efficiency under a light load condition. In addition, a novel soft start circuit based on a current limiter has been implemented to avoid inrush current. Fabricated with commercial 180 nm CMOS technology, the DC DC converter achieves a peak efficiency of 93.1% under a 2 MHz working frequency. The whole receiver consumes only 20.2 mA from a 3.3 V power supply and has a noise figure of 2.5 dB.", "corpus_id": 106655932, "venue": "", "year": 2012, "author_names": [ "Shi Jian", "Mo Taishan", "Le Jianlian", "Gan Yebing", "Ma Cheng-yan", "Ye Tian-chun" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "29127090", "title": "Design and optimization of high current intelligent waveform power supply for electroplating", "abstract": "In this paper, a 200kW high power intelligent waveform electroplating power supply with an improved circuit topology is described. In order to realize the expansion of output power and high efficiency with intelligent output, the modular design and optimization of the structure is taken into consideration. A topology, which consists of a ZVS phase shifted full bridge circuit and a full bridge inverter, is proposed. To realize the high frequency of intelligent waveform, a power snubber circuit is developed. In addition, a novel MOSFET full bridge inverter module is designed to reduce the power loss, and detailed thermal simulation to verify its improved thermal performance is also realized. Finally, an independent digital control system is fully applied to each power unit to realize the waveform control and better performance of current sharing between units.", "corpus_id": 29127090, "venue": "Proceedings of The 7th International Power Electronics and Motion Control Conference", "year": 2012, "author_names": [ "Lejia Sun", "Junxu He", "Yunqing Pei", "Zhaoan Wang" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "13616725", "title": "Novel driving circuit with fast energy transfer speed and high efficiency for plasma televisions", "abstract": "A novel driver with low cost and low rating devices is presented for plasma display panels (PDPs) based on a compromise of high efficiency and fast energy transfer speed. Since the proposed driver has been designed by devices with half of voltage rating compared with the conventional drivers, it can take advantages of semiconductor devices with reduced conduction and switching losses as well as cheaper costs. The proposed driver configures the sustain circuit and the resonant circuit in such a way that the resonant network is energized by the sustain voltage level and the half sustain voltage level in charging and discharging the panel capacitor, respectively. Therefore, the proposed driver is designed for the purposed of fast voltage transition and high efficiency during the up commutation and down commutation periods, respectively. Moreover, the proposed driver is supplied from half of required sustain voltage level. The reduced supply voltage of the driver results in cost reduction and improved efficiency in the power supply blocks. As a result, the PDP driver presented in this paper can feature faster sustain voltage transition, higher brightness, high efficiency, and lower cost.", "corpus_id": 13616725, "venue": "2012 IEEE International Conference on Consumer Electronics (ICCE)", "year": 2012, "author_names": [ "Sangshin Kwak", "Donghyun Baek" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "112755712", "title": "Design of a novel auxiliary power supply for a PV inverter", "abstract": "The principle of boundary mode of isolated flyback topology was analyzed,a five output auxiliary power supply for 3 kW solar power inverter without the optocoupler feedback regulator circuit was presented,with the characteristics of simple structure,low cost,high efficiency and high reliability.The multi output auxiliary power supply of PV inverter schematic and a high frequency flyback transformer detail design were given.And EMI suppression measures in the solar power inverter auxiliary power supply design was described.This power supply has been already used in an inverter.The experiment results prove that the power supply works well,and its output ripple is small and the transformer works well with no fever phenomenon,and can meet the requirements of solar power inverters.", "corpus_id": 112755712, "venue": "", "year": 2013, "author_names": [ "Liu Ya-jin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "64010520", "title": "Novel Switch Power Supply in Parallel System Design", "abstract": "This system uses low power single chip STC12C5204AD as the control core,producing two PWM to drive the switching tube SFR9034 MOS pipe,combined with AD feedback made two controllable DC DC parallel power.It can realize the constant voltage output,and in accordance with the arbitrary adjustment of the ratio of the output current,current limiting protection control.It works stably,has high efficiency,meets the requirements of application.", "corpus_id": 64010520, "venue": "", "year": 2013, "author_names": [ "Bo Shupo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "110854253", "title": "Design and Development of a High Voltage Transformer less Power Supply for Ozone Generators Based on a Voltage fed Full Bridge Resonant Inverter", "abstract": "It is known that transformer based power supplies for ozone generators have low efficiency, high cost and exhibits a limited frequency range of operation. To overcome these disadvantages, this paper proposes a high frequency ozone generator with the absence of a transformer. The voltage step up is achieved only by utilizing the resonant tank. This is made possible by a novel combination of ozone chamber materials that allow ozone to be generated at only 1.5 3.5 kVp p. The input to the resonant tank is driven by a PWM full bridge resonant inverter. Furthermore, zero current zero voltage switching (ZCZVS) operation is achieved by employing a duty factor of 25% between the switches of the full bridge. The advantages of the proposed system include high efficiency, low cost and the ability to control ozone production by varying the input voltage to the inverter. The prototype is verified by both simulation and experimental results.", "corpus_id": 110854253, "venue": "", "year": 2012, "author_names": [ "Muhammad Amjad", "Zainal Salam", "Mochammad Facta", "Kashif Ishaque" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "182810563", "title": "A High Efficiency Green Mode Switch Mode Power Supply Regulator", "abstract": "A novel green mode switch mode power supply (SMPS) buck regulator with an on chip power switch is proposed.By adopting PWM/Burst multi mode operation,its conversion efficiency is enhanced over the entire load range.It reduces the light load and standby power dissipation of modern portable products powered by batteries,which results in prolonging their standby time and battery lifetime.Moreover,a seamless transition is successfully realized by over voltage suppression.In addition,an on chip current sensing technique with high precision and efficiency has been introduced into the control strategy to improve its efficiency further.The regulator is designed and fabricated in 1.5mm BCD (Bipolar CMOS DMOS) technology.The test results show that all expected performances are achieved.", "corpus_id": 182810563, "venue": "", "year": 2008, "author_names": [ "Lou Jiana", "Wu Xiaobo", "Zhao Menglian", "Chen Hai", "Yan Xiao-lang" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "46603466", "title": "Digital Predistortion for Wideband High Efficiency RF Power Amplifiers for High Throughput Satellites", "abstract": "In satellite communications, there is considerable increasing demand to support higher data throughput on necessarily pre allocated bandwidth channels. In communication payloads, the DC to RF power conversion efficiency is crucial and most of the DC power is consumed by the RF Power Amplifier (PA) Thus, maximizing the PA efficiency while maintaining low distortion is key. Both power and bandwidth efficiency could be increased by employing digital pre distortion (DPD) This paper focuses on state of the art DPD techniques and possible developments to fit in satellite communications. The toleration of effects of temperature, supply voltage, and load mismatch variations, are investigated. This research suggests that there are benefits to be gained; employing spectrally efficient modulation techniques and transmitting a high fidelity signal to result in less expensive space and ground segment transmitters. A proof of concept by simulation is presented for ultra wideband applications. A novel DPD system architecture is proposed where envelope tracking (ET) of the driver amplifier (DA) and load modulation of the PA are used to maximize the overall PAE while high PAPR signals can be used. To the best of the authors' knowledge, this is the first time that DPD has been proposed for large fractional bandwidth high PAPR signals for satellite communications.", "corpus_id": 46603466, "venue": "", "year": 2013, "author_names": [ "Ahmed Maghawry Ibrahim Abouelenin", "Craig Ian Underwood" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "109999416", "title": "A novel high efficiency UPS using improved inverter and DC to DC converter", "abstract": "The uninterruptible power supply (UPS) presented combines a rectifier of high input power factor, a DC/DC power converter and a pulsewidth modulated (PWM) inverter. However, in the inverter circuit, because a divided choke snubber was devised, short circuit failure can be avoided without giving the drive pulse of switching element a dead time period. Also because an LD snubber was designed, the current surge and the voltage surge do not occur. The performance of the switched snubber, the effectiveness of the LD snubber and of the divided choke snubber were verified by the experiments. Experimental results of testing these schemes are reported.<ETX>", "corpus_id": 109999416, "venue": "[Proceedings] Thirteenth International Telecommunications Energy Conference INTELEC 91", "year": 1991, "author_names": [ "Yoshihiro Eishima", "Masahito Jinno", "F Tominaga", "Hiroshi Sakamoto", "Koosuke Harada" ], "n_citations": 1, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "212409801", "title": "View Classification and Object Detection in Cardiac Ultrasound to Localize Valves via Deep Learning", "abstract": "Echocardiography provides an important tool for clinicians to observe the function of the heart in real time, at low cost, and without harmful radiation. Automated localization and classification of heart valves enables automatic extraction of quantities associated with heart mechanical function and related blood flow measurements. We propose a machine learning pipeline that uses deep neural networks for separate classification and localization steps. As the first step in the pipeline, we apply view classification to echocardiograms with ten unique anatomic views of the heart. In the second step, we apply deep learning based object detection to both localize and identify the valves. Image segmentation based object detection in echocardiography has been shown in many earlier studies but, to the best of our knowledge, this is the first study that predicts the bounding boxes around the valves along with classification from 2D ultrasound images with the help of deep neural networks. Our object detection experiments suggest that it is possible to localize and identify multiple valves precisely.", "corpus_id": 212409801, "venue": "", "year": 2020, "author_names": [ "Derya Gol Gungor", "Bimba Rao", "Cynthia Wolverton", "Ismayil Guracar" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "227061547", "title": "Improving Image Quality of Single Plane Wave Ultrasound via Deep Learning Based Channel Compounding", "abstract": "The emergence of data driven approaches such as Deep Learning has led to novel application of various aspects of science and engineering. It has recently entered the field of ultrasound image beamforming. In this work we investigate neural networks tailored to create images of the quality of multiple compounded plane wave excitations from the data of the central angle (0deg) excitation only. The proposed network is used to produce pixel wise weights to weigh a standard delay and sum image from all channel data available to a pixel. It is found to produce higher quality images than the classical reference reconstruction from the 0deg angle data.", "corpus_id": 227061547, "venue": "2020 IEEE International Ultrasonics Symposium (IUS)", "year": 2020, "author_names": [ "Sven Rothlubbers", "Hannah Strohm", "Klaus Eickel", "Jurgen W Jenne", "Vincent Kuhlen", "David Sinden", "Matthias Gunther" ], "n_citations": 2, "n_key_citations": 1, "score": 1 }, { "doc_id": "227063901", "title": "qULM DL: Quantitative Ultrasound Localization Microscopy via Deep Learning", "abstract": "Ultrasound localization microscopy (ULM) has been developed in recent years to significantly improve the spatial resolution of ultrasound imaging by localizing the microbubbles (MBs) flowing in microvasculature. Nevertheless, challenges remain in ULM. In our previous work (IEEE Trans. Med. Imaging, 10.1109/TMI.2020.2986781) by using a modified sub pixel convolutional neural network (CNN) we have implemented ULM with fast data processing speed, high imaging accuracy, short data acquisition time, and high flexibility characteristics. However, the signal intensities of MBs are not quantitatively recovered, as similar to many other ULM techniques. To overcome this limitation, in this work, we propose a new deep learning (DL) method, termed as qULM DL, to recover the true distributions (positions and intensities) of the MBs in ULM. A series of numerical simulations and in vivo experiment are performed to evaluate the performance of qULM DL. The results show that qULM DL can not only super resolve the complex structures but also quantitatively recover MBs intensities in these structures.", "corpus_id": 227063901, "venue": "2020 IEEE International Ultrasonics Symposium (IUS)", "year": 2020, "author_names": [ "Tianyang Zhou", "Mengyang Lu", "Yongli Yang", "Qiong He", "Jianwen Luo", "Xin Liu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "222410592", "title": "VP25.02: Automatic classification of fetal axial brain planes from ultrasound images via deep learning", "abstract": "autopsy; in three (2.9% an alternative diagnosis was proposed and in five (4.8% the autopsy was considered uninformative. Diagnostic accuracy averege rates for all ultrasonographic diagnoses were sensetivity of 88.9% (42.5% 98.5% specificity of 94.3% (78.1% 97% PPV of 91% (73% 94.2% and NPV of 87.2% (85.2% 93.1% Conclusions: Our study demonstrates an excellent correlation between dedicated neurosonography and autopsy findings in the field of fetal brain malformations. Despite this high correlation in a considerable number of cases the autopsy adds important information not demonstrable by imaging. The risk of false positive US diagnoses although low should always be considered.", "corpus_id": 222410592, "venue": "", "year": 2020, "author_names": [ "David Coronado-Gutierrez", "X P Burgos-Artizuu", "E Monterde", "Elisenda Eixarch", "B Valenzuela", "Elisenda Bonet-Carne", "Eduard Gratacos" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "219687631", "title": "Sensorless Freehand 3D Ultrasound Reconstruction via Deep Contextual Learning", "abstract": "Transrectal ultrasound (US) is the most commonly used imaging modality to guide prostate biopsy and its 3D volume provides even richer context information. Current methods for 3D volume reconstruction from freehand US scans require external tracking devices to provide spatial position for every frame. In this paper, we propose a deep contextual learning network (DCL Net) which can efficiently exploit the image feature relationship between US frames and reconstruct 3D US volumes without any tracking device. The proposed DCL Net utilizes 3D convolutions over a US video segment for feature extraction. An embedded self attention module makes the network focus on the speckle rich areas for better spatial movement prediction. We also propose a novel case wise correlation loss to stabilize the training process for improved accuracy. Highly promising results have been obtained by using the developed method. The experiments with ablation studies demonstrate superior performance of the proposed method by comparing against other state of the art methods. Source code of this work is publicly available at https:/github.com/DIAL RPI/FreehandUSRecon.", "corpus_id": 219687631, "venue": "MICCAI", "year": 2020, "author_names": [ "Hengtao Guo", "Sheng Xu", "Bradford J Wood", "Pingkun Yan" ], "n_citations": 7, "n_key_citations": 2, "score": 0 }, { "doc_id": "196108814", "title": "Autonomous image based ultrasound probe positioning via deep learning", "abstract": "", "corpus_id": 196108814, "venue": "", "year": 2018, "author_names": [ "Grzegorz Toporek", "Wang Haibo", "Marcin Balicki", "Hua Xie" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "218831519", "title": "Colour Doppler ultrasound of temporal arteries for the diagnosis of giant cell arteritis: a multicentre deep learning study.", "abstract": "OBJECTIVES Giant cell arteritis (GCA) is the most common systemic vasculitis in adults. In recent years, colour Doppler ultrasound of the temporal arteries (CDU) has proven to be a powerful non invasive diagnostic tool, but its place in the diagnosis of GCA remains to be defined. A limitation of the CDU is the inter operator reproducibility. Image analysis from a different perspective is now possible with the development of artificial intelligence algorithms. We propose to assess this technology for the detection of the halo sign on CDU images. METHODS Three public hospitals retrospectively collected data from 137 patients suspected of having GCA between January 2017 and April 2019. CDU images (n=1,311) were labelled with the VIA software. Three sets (training, validation and test) were created and analysed with a semantic segmentation technique using a U Net convolutional neural network. RESULTS The area under the curve (AUC) was 0.931 and 0.835 on the validation and test set, respectively. An image positivity threshold was determined by focusing on the specificity. With this threshold, a specificity of 95% and a sensitivity of 60% were obtained for the test set. The analysis of the false interpretation showed that the acquisition modalities and the presence of thrombus caused confusion for the algorithm. CONCLUSIONS We propose an automated image analysis tool for GCA diagnosis. The 2018 EULAR guidelines for image acquisition must be respected before generalising this algorithm. After external validation, this tool could be used as an aid for diagnosis, staff training and student education.", "corpus_id": 218831519, "venue": "Clinical and experimental rheumatology", "year": 2020, "author_names": [ "Christophe Roncato", "Lior Perez", "Antoine Brochet-Guegan", "Caroline Allix-Beguec", "Alizee Raimbeau", "Giovanni Gautier", "Christian Agard", "Gaetan Ploton", "Simon Moisselin", "Fanny Lorcerie", "Guillaume Denis", "Bruno Gombert", "Elisabeth Gervais", "Olivier Espitia" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "225156481", "title": "Segmentation and classification of knee joint ultrasonic image via deep learning", "abstract": "Abstract The knee is one of the most complicated joints in the human body, but it could be easily injured. Ultrasound imaging is an important technology for the diagnosis of the knee disease. To assist doctors in the treatment and reduce errors of judgment, we investigate the segmentation of disease regions and the automated identification of the typical knee joint diseases. First, we use deep learning to segment the Region of Interest (ROI) To solve the mis segmentation and poor edge segmentation that occur when the ultrasound image is directly fed into the deep neural network, an image segmentation framework is proposed that integrates snake preprocessing, dilated convolution to expand the receptive fields, and multi channel learning. Second, due to the small difference in features among various categories of ultrasound images, a hybrid algorithm is proposed based on the Resnet rough classification and quadratic training with graph embedding. Finally, the experiments show that the proposed image segmentation framework achieves 10% greater accuracy than a common segmentation network. By visualizing the feature vectors extracted from the classification network, we verify that the feature vectors are closer on similar images after quadratic training by graph embedding. Employing the optimization with quadratic training, we increase the classification accuracy by 11% compared to the Resnet approach.", "corpus_id": 225156481, "venue": "Appl. Soft Comput.", "year": 2020, "author_names": [ "Zhili Long", "Xiaobing Zhang", "Cong Li", "Jin Niu", "Xiaojun Wu", "Zuohua Li" ], "n_citations": 3, "n_key_citations": 0, "score": 2 }, { "doc_id": "211191719", "title": "Generalizing Deep Learning for Medical Image Segmentation to Unseen Domains via Deep Stacked Transformation", "abstract": "Recent advances in deep learning for medical image segmentation demonstrate expert level accuracy. However, application of these models in clinically realistic environments can result in poor generalization and decreased accuracy, mainly due to the domain shift across different hospitals, scanner vendors, imaging protocols, and patient populations etc. Common transfer learning and domain adaptation techniques are proposed to address this bottleneck. However, these solutions require data (and annotations) from the target domain to retrain the model, and is therefore restrictive in practice for widespread model deployment. Ideally, we wish to have a trained (locked) model that can work uniformly well across unseen domains without further training. In this paper, we propose a deep stacked transformation approach for domain generalization. Specifically, a series of {n} stacked transformations are applied to each image during network training. The underlying assumption is that the \"expected\" domain shift for a specific medical imaging modality could be simulated by applying extensive data augmentation on a single source domain, and consequently, a deep model trained on the augmented \"big\" data (BigAug) could generalize well on unseen domains. We exploit four surprisingly effective, but previously understudied, image based characteristics for data augmentation to overcome the domain generalization problem. We train and evaluate the BigAug model (with {n}{9} transformations) on three different 3D segmentation tasks (prostate gland, left atrial, left ventricle) covering two medical imaging modalities (MRI and ultrasound) involving eight publicly available challenge datasets. The results show that when training on relatively small dataset (n 10~32 volumes, depending on the size of the available datasets) from a single source domain: (i) BigAug models degrade an average of 11%(Dice score change) from source to unseen domain, substantially better than conventional augmentation (degrading 39% and CycleGAN based domain adaptation method (degrading 25% (ii) BigAug is better than \"shallower\" stacked transforms (i.e. those with fewer transforms) on unseen domains and demonstrates modest improvement to conventional augmentation on the source domain, (iii) after training with BigAug on one source domain, performance on an unseen domain is similar to training a model from scratch on that domain when using the same number of training samples. When training on large datasets (n 465 volumes) with BigAug, (iv) application to unseen domains reaches the performance of state of the art fully supervised models that are trained and tested on their source domains. These findings establish a strong benchmark for the study of domain generalization in medical imaging, and can be generalized to the design of highly robust deep segmentation models for clinical deployment.", "corpus_id": 211191719, "venue": "IEEE Transactions on Medical Imaging", "year": 2020, "author_names": [ "Ling Zhang", "X J Wang", "Dong Yang", "Thomas Sanford", "Stephanie A Harmon", "Baris Turkbey", "Bradford J Wood", "Holger R Roth", "Andriy Myronenko", "Daguang Xu", "Ziyue Xu" ], "n_citations": 58, "n_key_citations": 12, "score": 0 }, { "doc_id": "227064024", "title": "Beyond Classical Ultrasound Contrast via Deep Neural Networks", "abstract": "Classical ultrasound reconstruction applies model driven approaches to obtain ultrasound images from ultrasound raw data. With the emergence of Deep Learning however data driven approaches become feasible and can be explored. These can be used to take shortcuts in the reconstruction, directly learning the relationship between raw data and image data. Even more, entirely new target contrasts can be pursued. In this work we present an approach to train a neural network to reconstruct image data of a classical ultrasound and a novel MR like contrast from the same ultrasound raw data.", "corpus_id": 227064024, "venue": "2020 IEEE International Ultrasonics Symposium (IUS)", "year": 2020, "author_names": [ "Hannah Strohm", "Sven Rothlubbers", "Klaus Eickel", "Matthias Gunther" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "229759095", "title": "A preliminary assessment of trnH psbA as DNA barcode for botanical identification of polyfloral honey samples and comparison with rbcL marker", "abstract": "Balkanska, R. Stefanova, K. Stoikova Grigorova, R. Ignatova, M. (2020) A preliminary assessment of trnH psbA as DNA barcode for botanical identification of polyfloral honey samples and comparison with rbcL marker. Bulg. J. Agric. Sci. 26 (1) 238 242 Honey is a natural and sweet product produced from Apis mellifera L. It can be classified as monofloral and polyfloral. DNA barcoding of pollen in honey can be used to identify the source of honey with high efficiency. Three polyfloral honey samples were used in the study. The trnH psbA barcode was found to be an effective marker as source of additional date in identifying of the botanical origin of honey samples with high level of confidence. The purpose of this study was first to assess the efficiency of trnH psbA marker as a DNA barcode for botanical identification and to compare the data with the obtained results for rbcL marker as a complex approach for botanical identification of polyfloral honey samples.", "corpus_id": 229759095, "venue": "", "year": 2020, "author_names": [ "Ralitsa Balkanska", "Katerina Stefanova", "Radostina Stoikova-Grigorova", "M M Ignatova" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "226475367", "title": "The Production of Jam from African Star Apple (Alasa) and Honey", "abstract": "The main objective of this study was to produce jam using Alasa and honey. Experimental study design and sensory analysis techniques were applied. The study population consists of students and staff of the Hospitality Management department of Takoradi technical University. A sample size of 65 was purposively or conveniently selected. Two forms of data obtained primarily from the primary source include samples of raw materials with ingredients used and sensory form feedback obtained from the respondents. The raw materials were sourced locally. The data was analyzed using SPSS and Microsoft Excel 2013. The paper discovered that majority of the respondents know Alasa and have ever consumed it. Also, most of the respondents expressed their preference for Alasa with reasons pointing to its great natural taste and health benefits. In respect of the specific objectives, majority of the respondents accepted that jam can be produced from Alasa and honey given its rich source of protein and medicinal value. Majority agreed that jam made from Alasa and honey would be accepted in the Ghanaian community and expressed their desire for it to be produced both in local and global markets. The paper concludes with recommendations among other things that diabetic patients should try and patronize Alasa and honey jam, people should patronize Alasa and honey jam in other to introduce varieties to breakfast dishes, research into the health benefits of Alasa and honey jam should be encouraged and industries should produce Alasa and honey jam in large quantities after research uncovers its health benefits. Keywords Alasa, Experimental design, Honey, Jam, Production, Sensory analysis. DOI: 10.7176/FSQM/101 06 Publication date: September 30 th 2020", "corpus_id": 226475367, "venue": "", "year": 2020, "author_names": [ "Lucia Dzokoto", "Doris Tempah" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "219453274", "title": "Therapeutic Properties of Honey: A Review of Literature", "abstract": "Honey is a natural organic substance that is produced from the nectar of flowers by Apis mellifera and is a sweet, flavourful liquid. It contains sugars, small quantities of proteins, amino acids, enzymes, vitamins, minerals, trace elements, aroma compounds, and polyphones. It is accepted widely as food and medicine by all generations, traditions and civilizations of both ancient and modern era. Asian countries like Sri Lanka, India, Nepal, and Pakistan have been using honey for their traditional and medicinal purposes. It is used as a remedy for burns, ulcers, diabetes, wound healing, cataract, etc. Many researchers have scientifically proved most of the traditional claims, (e.g. usage for diabetes, oral infection, constipation, diarrhea, inflammation, cardiovascular and gastrointestinal diseases) for honey using scientifically controlled experiments. We conclude this review by exposing the benefits and traditional and medicinal usage of the honey. Keywords: Apis mellifera, honey, medicine, nectar, remedy Cite this Article Maryam Zafar Tabassum Latafat, Amreen Zehra, Yasra Farooqui. Therapeutic Properties of Honey: A Review of Literature. Research Reviews: A Journal of Pharmacology 2020; 10(1) 41 49p.", "corpus_id": 219453274, "venue": "", "year": 2020, "author_names": [ "Maryam Zafar", "Tabassum Latafat", "Amreen Zehra", "Yasra Farooqui" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "226330655", "title": "Pattern of Histopathological Alterations in N methyl N Nitrosourea (MNU) Induced Breast Cancer in Female Sprague Dawley (SD) Rats Treated with Crude Honey", "abstract": "Natural products are becoming primary investigative molecules creating hope for finding new powerful classes of anticancer agents for breast cancer. One of the most remarkable of these is honey. To explore the mechanism of action of any anticancer agent the initial step is to analyse its effect in the histopathological tissue section. This study was designed to describe the histopathology of N methylN nitrosourea (MNU) induced breast cancer in Sprague Dawley rat (SD rats) treated with crude honey. Female rats were distributed into 4 groups: Group0 (normal) Group1 (MNU control) Group2 and 3: Tualang and Manuka honey treated, respectively. Rats were sacrificed and histopathology of both non treated and treated tumours was done. Lower histological grade, infrequent combination histologic pattern (p<0.001) prominent cytoplasmic vacuolization (p<0.001) aggregates of atypical macrophages (p< 0.001) and lesser necrosis (p= 0.005) were Urmila Banik, Sarfarz Ahamed, Swe Swe Latt, Nur Asyilla Che Jalil, Wan Faiziah Wan Abdul Rahman and Nor Hayati Othman 1550 Pertanika J. Sci. Technol. 28 (4) 1549 1558 (2020) major outcomes in treated cancers. This data will aid in the histopathological interpretation of honey treated breast cancer model and future anticancer study of honey.", "corpus_id": 226330655, "venue": "", "year": 2020, "author_names": [ "Urmila Banik", "S Irshad Ahamed", "Swe Swe Latt", "Nur Asyilla Che Jalil", "Wan Faiziah Wan Abdul Rahman", "Nor Hayati Othman" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "230643918", "title": "Isolation and Purification of Bacteriocin Produced by Lactobacillus plantarum Isolated from Honey Bees Gut and its Inhibitory action against Major Human Colon Pathogens", "abstract": "Lactic acid bacteria (LAB) are widely used in food industry as starter culture for fermentation. These organisms have been widely used as probiotics. Many of these lactic acid bacteria are known to produce antibacterial substances including bacteriocin which can inhibit the growth of several pathogenic bacteria. Bacteriocin from lactic acid bacteria are natural antimicrobial peptides or small proteins with bactericidal or bacteriostatic activity against genetically closely related species. Bacteriocin is a protein or complex proteins biologically active with antimicrobial action against other bacteria, principally closely related species. They are produced by bacteria and are normally not termed antibiotics in order to avoid confusion and concern with therapeutic antibiotics, which can potentially illicit allergic reaction in humans and other medical problems. Bacteriocin differs from most therapeutic antibiotics in being proteinaceous International Journal of Current Microbiology and Applied Sciences ISSN: 2319 7706 Volume 9 Number 10 (2020) Journal homepage: http:/www.ijcmas.com", "corpus_id": 230643918, "venue": "", "year": 2020, "author_names": [ "Swapnil S Khetre", "K G Deshpande", "Prathamesh N Bakshi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "218911520", "title": "Cardioprotective Effects of Honey and Its Constituent: An Evidence Based Review of Laboratory Studies and Clinical Trials", "abstract": "Cardiovascular disease is a major public health burden worldwide. Myocardial infarction is the most common form of cardiovascular disease resulting from low blood supply to the heart. It can lead to further complications such as cardiac arrhythmia, toxic metabolite accumulation, and permanently infarcted areas. Honey is one of the most prized medicinal remedies used since ancient times. There is evidence that indicates honey can function as a cardioprotective agent in cardiovascular diseases. The present review compiles and discusses the available evidence on the effect of honey on cardiovascular diseases. Three electronic databases, namely, PubMed, Scopus, and MEDLINE via EBSCOhost, were searched between January 1959 and March 2020 to identify reports on the cardioprotective effect of honey. Based on the pre set eligibility criteria, 25 qualified articles were selected and discussed in this review. Honey investigated in the studies included varieties according to their geological origin. Honey protects the heart via lipid metabolism improvement, antioxidative activity, blood pressure modulation, heartbeat restoration, myocardial infarct area reduction, antiaging properties, and cell apoptosis attenuation. This review establishes honey as a potential candidate to be explored further as a natural and dietary alternative to the management of cardiovascular disease.", "corpus_id": 218911520, "venue": "International journal of environmental research and public health", "year": 2020, "author_names": [ "Ruszymah Bt Hj Idrus", "Nur Qisya Afifah Veronica Sainik", "Abid Nordin", "Aminuddin bin Saim", "Nadiah Sulaiman" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "218979405", "title": "THE USE OF ARECA NUT EXTRACT ON THE ORGANOLEPTIC AND PHYSICAL CHARACTERISTICS OF TANNED TILAPIA SKIN", "abstract": "Tanning is a process of turning raw skin into leather and aims to stop the rate of skin decay so as to make the skin resistant to physical, chemical and biological disorders. One of materials that can be used as a vegetable tanning is areca nut. The purpose of this research was to determine the concentration of areca nut extract that has the best physical characteristics and appearance of tilapia skin tanning. The parameter tests are physical tests (tensile strength, tear strength, elongation and shrinkage temperature) and organoleptic tests (texture, appearance and aroma) The method used in this research is a complete randomized design method, which consists of one factor and five levels with three repetitions (triplo) The treatment of this research is addition areca nut extract for 60 minutes with the following concentrations, 0% (control) 5% 7.5% 10% and 12.5% The results of the research showed that areca nut extract with a concentration of 7.5% was the best treatment with tensile strength of 224,72 6,57 kg/cm, elongation of 68.12 3.68% tear strength of 36.88 16,68 kg/cm, and the shrinkage temperature of 91.67 0.577C, for organoleptic assessment has an average score of 9 for appearance, 8.2 for odor/smell, and 9 for texture. 846 GSJ: Volume 8, Issue 1, January 2020 ISSN 2320 9186 GSJ(c) 2020 www.globalscientificjournal.com INTRODUCTION Tilapia is freshwater fish that is widely cultivated because it is easy to maintain, accelerate breeding and growth fast, resistant to pests and diseases (Prayitno et al 2012) Tilapia production in the last 5 years based on the 2017 Ministry of Maritime and Fisheries Report, the volume of production in 2013 2017 reach 914,778 tons; 999,695 tons; 1,084,281 tons; 1,114,156 tons and 1,265,201 tons and tilapia fillets which can reach 80 100 tons per year (KKP 2018) From this production, the yield of tilapia skin reaches 3.2 4 tons year. Based on the amount of waste from fish skins mentioned this will be a source of contamination. Skin waste from the fish filet industry is generally used for processing skin crackers which have low economic value, whereas fish skin can be processed as raw material (tanned leather) and leather products that have high economic value (Hak et al. 2000; Sahubawa Ambar 2016) Tanning is the process of converting raw skin into leather that is more stable, not easily decomposed, and suitable for a variety of uses (Roigl et al. 2012) Leather tanning can be done using vegetable tanners, mineral tanners, and synthetic tanners. Most of leather tanning process used chrome tanning which is classified as mineral tanner. Chrome tanners has several advantages which is, more flexible, resistant to high heat and has a higher tensile strenght (Yazicioglu and Boler 1983) The tanning material commonly used in the tanning industry is chrome because it produces high quality tanned leather. however, chromium is very dangerous to human health and the environment, so we need an alternative tanning material that can produce tanned leather with high quality. One of alternative replacement for chrome is combination tanning (Pratama 2016) Combination tanning is the use of two or more tanning materials in the tanning process (Widari et al. 2013) Sahubawa et al. (2011) added that the use of a mixture of tanning materials can improve the quality of tanned skin because each tanning materials can cover each other's deficiencies through its advantages, for example the tannin content in areca nuts that can protect the skin from microbial activity and give color to the tanned skin. Areca nut has tannin which can be used as a tanning agent because it has amorphous, tightening and preserving skin properties and gives a natural color (Dur 2013) Areca nut extract can improve the properties of the skin for the better, which is denser, fuller, and smoother (Purnomo 1992) MATERIAL AND METHODS The research is divided into two stages, The first stage is the process of areca nut extract, and the second stage is process of tilapia skin tanning and the chracteristic test which included organoleptic and physical character tested in the laboratory of Balai Kulit Karet dan Plastik Yogyakarta. The tools used in this research are plastic buckets, knives, brushes, weighing instrument, funnels, plywood boards, rulers, rotating drums, cutters, thicness gauges, and tensile testing machine (Zwick and Roell brand) The material used in this research includes the main ingredients is, 2,5 kg of tilapia fish skin, Na2S (sodium sulfide) Ca (OH)2 (calcium hydroxide) (NH4) SO4 (ammonium sulfate) Pancerol (oropon) NaCl (kitchen salt HCOOH (formic acid) H2SO4 (sulfuric acid) Cr2O3 (chrome tanner) Na2CO3 (Sodium carbonate) H2O (water) and synthetic tanning agent (soft syntan) The method that used in this research is complete randomized design consisting of one factor and five levels with three repetitions (triplo) the treatment is given is the difference in the concentration of areca nut extract as follows, 0% (control) 5% 7,5% 10% and 12,5% Then an analysis of the physical quality test of the tilapia skin tanned in accordance with the testing procedures listed on the National Standards Agency (BSN) which includes, tensile strength analysis (BSN 1990a) elongation (BSN 1990b) tear strength (BSN 1990) shrinkage temperatue (BSN 2005) The test results were then analyzed by comparing with SNI 06 61211999 (Stingray Skin for finished goods) data for tensile strength and tear strength. Whereas for stretching or elongation was analyzed by comparing SNI 06 4263 1996 data (finished leather from neat's leather) An analysis of the organoleptic of pangasius skin was also conducted by comparing with SNI 06 4586 1998 data. Data Analysis The obtained data during the research are presented in form of graphs, drawings, and tables. Data were analyzed using qualitative methods (Effendi 1979) Parametric analysis conducted for organoleptic testing using friedman two way analysis of variance (Sudrajat 1999) RESULTS AND DISCUSSION Organoleptic Test (Appearance, Aroma, and Texture) Organoleptic is one of the most important parameters used to determine the quality of leather, these are related to the appearance of the skin that can be seen and felt directly by consumers or prospective users. The most important organoleptic properties are smoothness, color, and aroma (Hak 2013) In this test the panelists used were trained panelists. Based on the results of the organoleptic test, the results of the test are as follows (figure 1) 847", "corpus_id": 218979405, "venue": "", "year": 2020, "author_names": [ "Septian Arya Rizky", "Evi Liviawaty", "Rusky Intan Pratama", "Eddy Afrianto" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225864666", "title": "Comparative Studies on Physico chemical and Sensory Attributes of Natural and Artificial Whey Protein Beverages", "abstract": "Whey, the liquid remaining after the precipitation of milk casein was used and there physicochemical properties were measured. The aim of the study was to utilise the valuable nutrients present in whey by preparing a ready to serve modified whey beverage. Two types of beverages were prepared i.e. natural whey beverage using Himsagar mango and other one was artificial beverage using artificial colours and flavours. Shelf life of these beverages were studied (0 11th day) and compared on the basis of acidity, viscosity, ph and organoleptic properties. Student t test was applied here and found that the natural whey beverage was curdled on the 7th day but the artificial whey beverage remained normal till 11th day of the study. From this observation, it was concluded that the natural whey beverage tasted better initially but curdled on the 7th day and in case of artificial whey beverage, though the taste of the beverage initially was not acceptable but gradually it improved its taste on storage and it remained in good condition till the 11th day. Keywords: Whey beverage, Channa, Paneer, Casein, Serum albumin, b lactoglobulin. Cite this Article Debasree Ghosh, Deep Biswas. Comparative Studies on Physico chemical and Sensory Attributes of Natural and Artificial Whey Protein Beverages. Research Reviews: Journal of Food Science Technology. 2020; 9(1) 1 6p.", "corpus_id": 225864666, "venue": "", "year": 2020, "author_names": [ "Debasree Ghosh", "Deepa Biswas" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "222175685", "title": "Effect of Manuka Honey against Dental plaque of School Children", "abstract": "Manuka honey,a monofloral honey derived from the manuka tree(Leptospermum scoparium)has greatly attained the attention of researchers for biological properties,especially its antimicrobial and antioxident capacities.As many of the medicine properties of plants can be transmitted through honey,so that honey could be used as a vehicle for transporting plant medicinal properties,Manuka honey is a type of monofloral honey,a dark honey has greatly attracted the attention of the international community.This honey is derived from the Manuka tree,Leptospermum scoparium of the myrtaceae family,which is a land and eastern Australia[19] The aim of this study (Research work) is to develop the efficient use of mouthwashes Manuka honey (MH) a raw honey for the prevention of dental plaque forming bacteria in the young kids and teenagers. This study was a double blind, randomized controlled field trial conducted in Patna city (Bihar) India. MATERIALS AND METHODS Twenty eight government school children aged 8 15 years were randomly selected and allocated into two groups MH and CHX mouthwash groups. Ten millilitres each of honey based mouthwash and CHX mouthwashes were administered according to the group allocation twice daily for 35 days (5 weeks) The MH group participants were trained to apply the Manuka honey gently into the space between the tooth and gum tissue that surround all the teeth and wait for 5 minutes before rinse. All children were advised to do not eat or drink anything up to 30 minutes after rinse the mouth. All the children were examined at baseline (36 th day) Just next to discontinuation of mouthwash and 42 nd day 1 week after discontinuation of mouthwash) for plaque index. RESULTS Statistically significant reductions in dental plaque were observed in both the mouthwash group. Methylsyringate, methylglyoxal, syringing acid, Hydrobenzoic acid and leptosin are active compounds present in Manuka honey having efficient mechanism on the dental plaque forming bacteria. CONCLUSION Manuka Honey based mouthwash showed a promising antimicrobial effect on dental plaque in the young kids and teenagers. KeywordsDental plaque, Honey, Mouthwash, Microbiota, Bacteria, Oral health. Date of Submission: 12 09 2020 Date of Acceptance: 29 09 2020 I. Objective Microbial biofilms are a type of complex communities of bacteria and very common in the human body as well as in the environment. The nature of the biofilms enhances the component bacteria\"s resistance to both the host\"s defence system and antimicrobials. Dental plaque is a kind of Microbial biofilm. If it is not removed regularly, the biofilm undergoes maturation and the resulting Pathogenic bacterial complex can lead to dental caries, gingivitis and periodontitis (the kind of poor oral health) The poor oral health can cause systemic disease, such as cardiovascular disease, rheumatoid arthritis and osteoporosis. The poor health is very common in the young kids as well as in teenagers. Regardless of the advancement of the modern medical science, satisfactory treatment of oral disease by newer drugs is not fully achieved yet, rather than the chemical compounds have exposed the kids and adults to its various kinds of ill effects. Due to this, there is an interest to find out effective remedy by harmless natural and easily available drugs that can be used by any age group of kids and adults. Our research paper is totally based on the development of the dental plaque forming bacteria and its isolation (prevention) method based on the efficient use of antiplaque natural remedies. For our research work, Manuka honey (kind of monofloral honey) is used for the prevention of Dental plaque. I", "corpus_id": 222175685, "venue": "", "year": 2020, "author_names": [ "S Surya Kumari", "Birendra Prasad" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "228626704", "title": "Therapeutic Applications of Honey and its Phytochemicals: Volume II", "abstract": "Homeostasis is a collective name for the self regulating cellular processes that maintain cell stability and survival. Any variation from normal functioning in any biological process can lead to different diseases or syndromes such as cancer, diabetes, and metabolic syndromes. Cancer results by the uncontrolled division of cells in any organ or tissue and can metastasize to other organs as well. Derailment in the process of cell division is the main cause for caner development. Leukemia a type of cancer in which the function and production of blood cells gets affected, is one of the leading cancers related mortalities throughout the world. Scientific research has witnessed a great interest in the pharmacodynamics of naturally occurring food products or other plants or plant products of medicinal I. Amin B. A. Mir S. B. Ahmad M. U. R. Mir Faculty of Veterinary Sciences and Animal Husbandry, Division of Veterinary Biochemistry, Sheri Kashmir University of Agricultural Science and Technology (SKUAST K) Shuhama, Jammu Kashmir, India A. Ali Department of Clinical Biochemistry, University of Kashmir, Srinagar, Jammu Kashmir, India R. Ali Faculty of Veterinary Sciences and Animal Husbandry, Division of Veterinary Pathology, Sheri Kashmir University of Agricultural Science and Technology (SKUAST K) Shuhama, Jammu Kashmir, India W. Qamar A. Arafah M. U. Rehman Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia T. M. Mir National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS, USA e mail: tmmir@olemiss.edu Springer Nature Singapore Pte Ltd. 2020 M. U. Rehman, S. Majid (eds. Therapeutic Applications of Honey and its Phytochemicals, https:/doi.org/10.1007/978 981 15 7305 7_1 1 value in order to make them novel drug agents to target various diseases including cancer. This chapter vividly describes phenolic compounds that can be used as signature drugs to target leukemias. Gene expression and microarray studies have depicted the various signaling pathways regulated by these compounds and, hence, serve in inducing decreased cell growth and malignancy in leukemias. Honey is well known for its nutritional and medicinal properties since ages and is continuously being explored for its wide pharmacological properties. Studies have attributed significant anti cancerous action to honey, but very less literature is available on its antileukemic action. In this present chapter, we have summarized the anti leukemic activities associated with bioactive components present in honey. Honey is a storehouse of biologically essential phenolic compounds such as phenolic acids, tannins, flavonoids, terpenoids, and coumarins. These compounds show tumor reduction or inhibitory action by arresting the cell cycle, upor downregulating mRNA expression of proteins involved in apoptotic cascades like Bax, caspase 3, Bcl 2, NOXA, MCL 1, rTRAIL, FAS, SCF/c Kit complex, p ATM, p ATR, 14 3 3 proteins sigma, MGMT, and HDACs; deactivating drug efflux ABC transporters; various cyclins and CDKs; and decreasing mitochondrial membrane potential. Till date no study elucidating the effect of raw honey derived phenolic compounds has been undertaken and, therefore, a wide scope exists for studying the effective chemotherapeutic mechanisms of these compounds.", "corpus_id": 228626704, "venue": "", "year": 2020, "author_names": [ "Muneeb Ur Rehman", "Sabhiya Majid" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "54171077", "title": "Challenges in Insurance Industry", "abstract": "How is possible to manage many numerous risks, in order to achieve human as well as environmental wellbeing, and to form modern insurance industry? This issue is very modern and it requires rational answers. Also, this is field of scientific research. Research results are commonly used by law regulative as row model for the profession and practice. Is mentioned line we can identify challenges in insurance sector. What are the characteristics of these challenges in developed and developing countries? What is the behavior of countries that are liders and those that are not? What are financial components, and what are social and personal effects of the modern insurance industry development? Insurance sector always has its own clear mission: to achieve as high as possible level of spiritual and material safety of the person insured. The vision should be achieving as high as possible level of spiritual and material safety of the person insured in real environment. Mission and vision of the insurance continuously transformed industry from everyday human activity to modern industry. This trend can not be stopped, because we are able to identify more and more risks every day and their identification, processing and management is more challenging. Two components are very important: financial and social. Developed countries formed the insurance industry as powerful and respectful sector that is important part of financial market. Its users are hundreds of millions of citizens and companies. Financial effects of life insurance are much higher that those of non life. Developing countries has no alternative than to follow, as quickly as they can, the developed countries path. That should make easier building own insurance industry. Globalization, controlled liberalization and all migration movements are additional and unavoidable factors that support insurance challenges. What is the suggestion for small, not enough developed countries as Bosnia and Herzegovina or all countries of ex Yugoslavia? Basic scientific truths in this field are continuous: probability theory and great numbers law, actuarial calculus based on relevant empiric research. Insurance challenges start with actuarial calculus and data needed. That follows portfolio formulation and investment of temporarily available funds. That means participation of insurance companies at financial markets as financial intermediates. How these challenges are present and how is possible to manage them in insurance sector of developed and developing countries as Bosnia and Herzegovina?", "corpus_id": 54171077, "venue": "", "year": 2009, "author_names": [ "Zeljko Sain", "Jasmina Selimovic" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "226360957", "title": "InsurTech Opportunities and Legal Challenges for the Insurance Industry", "abstract": "InsurTech did not come overnight. Insurance companies from the beginning were experts in collecting and analyzing data to assess risks and to calculate exposures and premium payments. InsurTech is the result of two new developments, however. First, more data has become available. It is said that the volume of available data in recent years has doubled every two or three years. Perhaps even more importantly, the available data now has various different sources. While in the past insurance companies had to rely mostly on the answers they received in response to specific questionnaires and on statistical data, the technical developments in recent years have allowed much broader sources of data. Social media and other third parties are now providing data independent from the customers. Wikipedia and other open source data allow a much more efficient gathering of information. Finally, customers are providing data through their own devices, be it at home, in the car, by mobile phone, etc. Second, analyzing this data has become much more efficient. Big Data analytics collecting, storing and analyzing Big Data volumes from internal and external sources is key. The volume of data as such is not decisive, rather the ability to analyse and draw conclusions. New technologies such as the use of algorithms and artificial intelligence provide efficient tools for this. In particular, the second mentioned aspect creates disruption. Incumbent insurers are confronted with the fact that either they need to invest in acquiring the respective technical capabilities or they need to liaise with third party providers. In addition, they are faced with new competition by new companies targeting specific markets. While many of the new providers are focusing on certain aspects of the insurance value chain, there are also new full fledged insurance companies.", "corpus_id": 226360957, "venue": "", "year": 2020, "author_names": [ "Joachim Frick", "Iris M Barsan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "225523994", "title": "Convective Storms and the Insurance Industry: Challenges and Opportunities", "abstract": "Convective storms affect countries worldwide, with billions in losses and dozens of fatalities every year. They are now the key insured loss driver in the United States, even after considering the losses sustained by tropical cyclones in 2017. Since 2008, total insured losses from convective storms have exceeded $10 billion per year. Additionally, these losses continue to increase year over year. Key loss drivers include increased population, buildings, vehicles, and property values. However, other loss drivers relate to construction materials and practices, as well as building code adoption and enforcement. The increasing loss trends pose a number of challenges for the insurance industry and broader society. These challenges are discussed, and some recommendations are presented.", "corpus_id": 225523994, "venue": "", "year": 2020, "author_names": [ "Kirsten D Orwig" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "38767439", "title": "Impact of Robotics, RPA and AI on the Insurance Industry: Challenges and Opportunities", "abstract": "We consider the current challenges and opportunities in applications of Robotics to financial services and to insurance in particular. Combinations of Robot Process Automation (RPA) with digitization have been considered by the industry, with important benefits in cost reduction and efficiency. We highlight the general benefits of RPA and the related implementation challenges in detail. We discuss more advanced Artificial Intelligence (AI) applications, arguing that such applications depend on the general advancements of AI, where human level interaction is not yet available. We discuss the great potential for AI applications in the near future and consider some initial examples. We also briefly discuss the hard problems of AI in relation to intelligence and consciousness in the introductory part, and briefly look at the implications AI and robots could have for human society and employment.", "corpus_id": 38767439, "venue": "", "year": 2017, "author_names": [ "Chris Lamberton", "Damiano Brigo", "David E Hoy" ], "n_citations": 22, "n_key_citations": 1, "score": 0 }, { "doc_id": "158991142", "title": "Autonomous Vehicles Challenges for the Insurance Industry", "abstract": "The objective of this article is to identify and analyse opportunities and threats for the insurance industry related to the popularisation of autonomous vehicles. The analysis uses the data and forecasts included in reports of independent research institutions, which forecast the tempo of development of autonomous vehicle technologies. In the following few years, the global model of transport is going to change as it will gradually move away from the model of possessing individual vehicles and towards using a fleet of autonomous vehicles depending on current needs. The fundamental motivation for changes will be safety, comfort and lower costs. A direct result of the technological revolution for the insurance industry is a reduction of the amount of paid compensation, which is related to the improvement in the safety of road traffic. However, the new model of individual transport is going to dramatically reduce the number of vehicles on roads, and therefore it will result in a significant drop in the income for insurers coming from selling vehicle insurance policies, which currently is one of the most significant sources of income for numerous markets. POJAZDY AUTONOMICZNE WYZWANIA DLA BRANZY UBEZPIECZENIOWEJ Piotr Majewski Katedra Finansow i Rachunkowosci Wyzsza Szkola Bankowa w Toruniu S l o w a k l u c z o w e: ubezpieczenia komunikacyjne, rynek ubezpieczen, pojazdy autonomiczne, bezpieczenstwo na drogach.", "corpus_id": 158991142, "venue": "", "year": 2017, "author_names": [ "Piotr Majewski" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "54548800", "title": "Challenges to Solvency II Reform in Insurance Industry", "abstract": "Insurance Industry is going through a very important stage of its transformation the transition from the classical system of management into a risk based management. These changes were launched in Europe by international organizations which deal with the development of the necessary infrastructure for a better managed industry and with a proper legal infrastructure through different European directives in insurance area. These changes have intensity in the finalization of the general technical, legal and structural infrastructure, which would be developed based on three pillars. The consequences of the current financial crisis as well as its impact towards the implementation of Insolvency II have not been analyzed yet. Its implementation, perhaps, would be an adequate response in facing this crisis.", "corpus_id": 54548800, "venue": "", "year": 2010, "author_names": [ "Berim Ramosaj" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "210699956", "title": "BIS A Blockchain based Solution for the Insurance Industry in Smart Cities", "abstract": "Insurance is one of the fundamental services offered to the citizens to reduce their costs and assist them in case of an emergency. One of the most important challenges in the insurance industry is to address liability challenge and the forging of documents by the involved parties, i.e. insurance company or the users, in order to increase financial gain. Conventional methods to address this challenge is significantly time consuming and costly and also suffers from lock of transparency. In this paper, we propose a blockchain based solution for the insurance industry in smart cities (BIS) BIS creates a big umbrella that consists of the smart city managers, insurance companies, users, and sensors and devices. The users are known by changeable Public Keys (PKs) that introduces a level of anonymity. The data collected by the sensors is stored in cloud or local storage and is shared with insurance company on demand to find the liable party that in turn increases the privacy of the users. BIS enables the users to prove and share the history of their insurances with other users or insurances. Using Proof of Concept (POC) implementation we demonstrated the applicability of blockchain in insurance industry. The implementation results prove that BIS significantly reduces delay involved in insurance industry as compared with conventional insurance methods.", "corpus_id": 210699956, "venue": "ArXiv", "year": 2020, "author_names": [ "Maedeh Sharifinejad", "Ali Dorri", "Javad Rezazadeh" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "158959712", "title": "Assessing the Technical Efficiency of Traditional and Corporate Agents in Indian Life Insurance Industry: Slack based Data Envelopment Analysis Approach", "abstract": "The distribution channels play an imperative role in the life insurance industry. In India, traditional and corporate agency are contributing immensely to the profitability of the insurance companies. The challenges faced by the distributional channels such as high attrition, soaring expense ratio and sales inefficiency have created the need to probe into the efficiency aspects of the channel players. In the absence of such studies in India, this article evaluates the technical efficiency of distribution channels in life insurance industry by analysing the data collected from 12 insurance companies for the period 2012 to 2016. The efficiency scores were obtained by applying data envelopment analysis that considered two inputs (number of agents and commission expenses) and two outputs (average business premium and total policies sold) The findings reveal no significant difference in the efficiency scores of bancassurance and traditional agents. Quiet life hypothesis that market share (ratio of premium contribution to total premium) of distributional channels and their efficiency scores are negatively correlated is not supported. Moreover, the slack analysis shows excess inputs per output generated for both the channels. If the companies that scored low in efficiency do not plug the leakages regarding commission as well a number of agents, adverse performance in the long term and consequent financial crisis are inevitable.", "corpus_id": 158959712, "venue": "", "year": 2020, "author_names": [ "Ankitha Shetty", "Savitha Basri" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "157238739", "title": "EMERGING TRENDS IN INSURANCE A STUDY IN INDIAN LIFE INSURANCE INDUSTRY", "abstract": "Indian Life insurance sector is growing at a faster rate. This sun rising industry has given a platform for economic growth and employment. The great extent of importance realized after it has opened to the private players in the post liberalization period. With many players in business, the insurance regulatory and development authority came with innovative and constructive guidelines for both products and services. Insurance is the backbone in managing the risk of the country. The insuranceproviders offer diversity of products to business, providing protection fromrisk thereby ensuring financial security. It helps individual and organization tominimize the consequences of risk which impart significant cause on the growth and development of insurance industry. Indian insurance industry isfacing major challenges in reaching out willing customers, providing themservices, acquiring and retaining players, product and distribution innovationetc. Apart from addressing the challenges of customers, improving theperformance to achieve profitable growth is another big challenge faced byIndian life insurers. Life insurance sectoranticipate different segments of customers with different needs thereby raisingthe importance of new and competitive dynamics. This paper discusses the new trends and challenges that the present industry is facing. Our study is only limited to life insurance sector. The suggestion and recommendation will help both academician and industry personnel to re engineer their thought in insurance sector.", "corpus_id": 157238739, "venue": "", "year": 2017, "author_names": [ "Deepali Kailasrao Mankar", "Dipak S Umbarkar" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "151683626", "title": "Challenges and Ways to Develop Insurance Industry in KSA Market", "abstract": "Psychology and ethnic play a central role within Saudi Arabia market. Thus, this editorial argues the cultural and emotion effects on the Saudi consumption of life insurance. Even thought, the present paper intend to understand the reasons of the slowly growth of the purchase of this product and how to increase its rate in the insurance portfolio? Subsequently, this study target to confirm the significant effects of religiosity, optimism, opinion leadership, emotional regulation on Saudi behavior to subscribe in life insurance. Data was collected from two samples. The first sample, count 210 respondents, worn to purify the measurement scales of the variables studied in the exploratory phase. The second sample was administered from belonging 654 policyholders in order to confirm the measures instruments, to verify the hypotheses, validate and re specify the model. Thus, this study bears a theoretical interest for researchers and it is useful for practitioners in this sector.", "corpus_id": 151683626, "venue": "", "year": 2016, "author_names": [ "Maher Taib Toukabri", "Hafedh Ibrahim" ], "n_citations": 4, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "158210874", "title": "Children of the world on British television: national and transnational representations", "abstract": "This article analyses comparative representations of childhood in British television programmes shortly after 1968, focusing on transnational broadcasting and international co productions. Television played a relatively conservative role, limited to programmes associated with pedagogical, public service aims. However, programmes engaged with adults' insight into the importance of listening to children and attributing them with greater agency and voice, recognition of diversity in children's culture, and the need to communicate with both adults and children about social problems, not least of which were problems affecting children themselves. Comparative representations of British childhoods had already been made for British television, the most celebrated being the documentary series 7 Up (1964 It follows the life stories of the same seven year old children from different social classes and geographical locations around the UK, for a new programme every seven years. In the 1971 edition the children were asked their views about politics, race and sex, implicitly critiquing British class privilege and opportunity, and expressing a desire for social change linked with experiences of childhood. However, transnational projects representing and comparing British childhoods with those in other nations rarely appeared on British television. The live broadcast Children of the World (1971) hosted by US actor and UNICEF representative Danny Kaye, representing children's lives in 45 countries, fitted a model for upbeat global simulcasts exemplified by Our World (1967) and was produced by an international consortium including the BBC in Britain, but it was not screened within Britain. Programmes made for children did investigate and compare childhoods in different countries, however. The 1971 BBC television series If You Were Me, an international co production, showed boys and girls from different countries swapping lives with each other, foregrounding similarity and difference. The British commercial ITV channel used a 1971 French film to launch an educational series for adults, Children to Children (1973) addressing childhood as experienced in various national contexts. Its short documentaries of widely differing styles were part of an outward looking agenda preceding Britain's entry into the Common Market. With reference to these examples, the article assesses the significance of the internationalization and universalization associated with 1968, inasmuch as it underlay television representations of childhood.", "corpus_id": 158210874, "venue": "", "year": 2018, "author_names": [ "Jonathan Bignell" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "10705612", "title": "The Importance of Service and Genre in Recommendations for Online Radio and Television Programmes", "abstract": "The BBC iPlayer is an online delivery system for both radio and television content [1] One of the unique features of the iPlayer is that programming is based around a seven day \"catch up\" window. This paper documents some early investigations into features that may be used to produce quality recommendations for that system. The two features explored here, services and genre, are partly unique to BBC metadata, and are available for all programmes in the schedule. Services are roughly equivalent to channels or stations, while genres are editorially assigned categorisations of media content. Results of genre service based diversity are presented, as well as some simple recommenders based on there, and additional discussion of the topic and results.", "corpus_id": 10705612, "venue": "", "year": 2011, "author_names": [ "Ian Knopke" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "144145518", "title": "Unity in diversity: Inculcating the concept of 1Malaysia through local television programmes", "abstract": "1Malaysia concept is a vision to create a harmonious Malaysian society, which is vital for Malaysia to attain a successful and developed country status. The concept stresses on the acceptance and inclusion of other cultures within the Malaysian realm and unity is vital for a country with plural society like Malaysia. Prime Minister Mohd Najib Tun Razak asserted that the 1Malaysia concept is unique as it celebrates the diversity of cultures grounded within a unique potpourri of living patterns that is steeped in traditions yet able to accommodate and withstand the winds of change without losing her local cultural balance. Siapera (2010) opined that it is without doubt that the media is an important tool which ensures diverse cultures in a country are equally represented without neglecting the universal and common values practised by everyone. The 1Malaysia concept places importance on both celebrating the diversity of cultures and inculcating common values amongst its citizen. This is where mass media, especially television, can play a big role. Syed Hussin (2008: 171) commented that mass communication has not been used to its full effect to promote a better understanding of people of different cultures and values. How true is this notion? This paper will shed some light into these issues: how the culturally diverse society and the concept of 1Malaysia are being represented on television and how audiences make meanings from these representations. The methodology employed in this research is twofold, comprising content analysis and focus group discussion. The objective of content analysis is to analyse how the concept of 1Malaysia is being represented on local television programmes. The focus group discussion, meanwhile, discovers how adolescents negotiate the television text in the process of understanding the 1Malaysia concept.", "corpus_id": 144145518, "venue": "", "year": 2013, "author_names": [ "Sabariah Mohamed Salleh" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "156130900", "title": "European Television Programming", "abstract": "When, in the 1980s and early 1990s, private commercial television was introduced in the majority of European countries, old fears about the hegemony of American popular culture resurfaced. However, concerns that the attendant influx of American programmes would weaken national cultures and diminish Europe's cultural diversity soon eased. Domestic programmes mostly seemed to draw higher audience figures, and from the mid 1990s national production sectors and output were growing. In academia, this led to the quickly cemented and widespread belief that audiences per se prefer local to imported programmes the appeal of the latter diminished by a \"cultural discount\" (Hoskins and Mirus, 1988) and most media scholars came to agree that national television markets would remain strong, followed in importance by geo linguistic or geo cultural markets offering close \"cultural proximity\" (Straubhaar, 1991, 2007; Sinclair et al. 1996; Keane et al. 2007) Television's internationalization, they opined, was confined by entrenched cultural difference and resilience.", "corpus_id": 156130900, "venue": "", "year": 2014, "author_names": [ "Andrea Marlen Esser" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "116502005", "title": "Television after TV? Broadcasting in the Digital and Mobile Age", "abstract": "Media environments are nowadays characterized by an almost all encompassing digitalization and mobilization. In particular television as the (former) leading medium seems to be under an enormous change and adjustment pressure under these conditions. Ever since the beginning of the digital expansion in the noughties the age of television 'as we know it' has been declared to be over with definition attempts such as \"television after tv\" (Spigel Ollson, 2004) ,post broadcast era\" (Turner Tay, 2009) or ,post network era\" (Lotz, 2009) Other actors, such as Norbert Schneider, a former director of the Media Authority in North Rhine Westphalia in Germany, calls the process of digitalization a silent revolution being as slow as a snail (2008, p. 27) In fact, much has been written (and also speculated) about the future of broadcasting and its social role. As an example, Geser (2012) reveals three essential changes in the transition of linear, analogue, 1.0 television to digital network media companies (2.0 television) (1) an expansion of channel and program diversity, (2) an increase of quality in transmission (HD and 3D) and (3) an inclusion of network media to allocate media content. Moreover, Groebel (2014) highlights structural changes in form of a growing importance of pay TV and web players. Undoubtedly, streaming providers, such as Netflix, Hulu, Maxdome and Amazon Prime gained relevance. They turned from pure content aggregators into data driven producers and thus define new success recipes and standards in the market. Broadcasters behaved in these market changes more as passive spectators than active participants; they argued mostly with the different and more comfortable usage situation (namely in front of the TV set) and relied on their strong market position. But with the market pervasion of internet enabled television devices (i.e.Smart TV, connected TV) traditional broadcasters and streaming providers are in direct competition: Being on one platform at the TV screen, the user has the choice to either watch linear television or to click on the respective app by Netflix, Amazon Prime etc. So the question arises, which challenges broadcasters are facing in these transformations. First the acquisition and management of massive amounts of audience information Big Data enable media companies to produce tailored and specialized content and to deliver advertising messages to individuals based on what they've bought, what they've browsed, what they've clicked on in an email, what they've shared on Facebook and so on. But while Big Data strategies are a standard for streaming providers long ago, traditional broadcasters seem to still rely on audience research they did in the last decades. Second Netflix and Co have the big advantage of being able to use audience information for a cross device targeting due to the need for users to log in with an account in order to use the service. Broadcasters do not have this possibility, but developed 'lash up' products for advertisers such as TVsynch advertising, a form of advertising that recognizes television advertising and places online ads synchronously. Third at the media use level the transition of 'passive couch potatoes' towards (more or less) active users has been extensively discussed: Time shifting and parallel media use practices (media meshing) are aspects broadcasters are increasingly facing. Traditional broadcasters thus need to offer valuable services on top of their programme to be still attractive for their audiences. So broadcasters have to provide more services, but they do not necessarily gain more advertising revenues through these services. In my presentation I will focus on the question, how viewers use different television offers (i.e. traditional broadcasting, video on demand, pay tv) and what consequences this has for ad financed broadcasters. First, a theoretical framework for the transition of the television market from 1.0 tv towards 2.0 tv will be introduced. Based on this framework and its dimensions a market overview will be provided specifically focusing on (1) the supply side with the coopetitive tension between broadcasters, streaming providers and pay tv, and (2) the audience side with current media use trends. Furthermore, the results of an empirical study will be presented that focused on the multiscreen use of video content in Austria (n 1,000, 15 65 years, representative for the internet population in Austria) An online survey has been conducted that included different aspects, such as the kind and number of different screens/devices in a household, the use of these devices, of different content offers (e.g. fee based video on demand services, pay tv) the extent of synchronous media use, the content that is used parallel to television and the attitude towards advertising at the different screens. A specific focus has been put on the group of the Millenials (15 29 years) as they reflect relevant trends in media usage patterns. The results of the study will allow for managerial implications for broadcasters in the digital and mobile era.", "corpus_id": 116502005, "venue": "", "year": 2016, "author_names": [ "Kati Forster" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "16229248", "title": "What's on TV: A large scale quantitative characterisation of modern broadcast video content", "abstract": "Video databases, used for benchmarking and evaluating the performance of new video technologies, should represent the full breadth of consumer video content. The parameterisation of video databases using low level features has proven to be an effective way of quantifying the diversity within a database. However, without a comprehensive understanding of the importance and relative frequency and of these features in the content people actually consume, the utility of such information is limited. Here, we present a large scale analysis of programming on BBC One and CBeebies, the most popular television channels in the United Kingdom for adults and children, respectively. Twenty video features are extracted from almost three thousand television programmes shown throughout 2015 before principal components analysis is used to identify just five factors representing the most variation. The meaning and relative significance of these five factors together with the shape of their frequency distributions represent highly valuable information for researchers wanting to model the diversity of modern consumer content in representative video databases.", "corpus_id": 16229248, "venue": "2016 IEEE International Conference on Image Processing (ICIP)", "year": 2016, "author_names": [ "Felix Mercer Moss", "Fan Zhang", "Roland J Baddeley", "David R Bull" ], "n_citations": 4, "n_key_citations": 1, "score": 1 }, { "doc_id": "157532912", "title": "Cultural Globalization and the Convention", "abstract": "The 2005 UNESCO Convention on the Protection and Promotion of Diversity of Cultural Expressions can be viewed as safeguarding group identities as understood through cultural expressions. Equally, the Convention protects the economic interests of member states in commercially produced cultural expressions such as film and television programmes. This dichotomy has led to vociferous trade versus culture debates in international cultural policy making; but, seen as a facet of global deliberation, this may be an enduring contribution from UNESCO to global norm formation. Despite the importance of cultural issues within UNESCO, until the 2005 Convention culture had remained relatively marginalized from discussions among post Second World War global institutions. The emergent global issues of culture, cultural identity, and cultural expressions therefore, need some historical context. Without this context, the vocabulary of the UNESCO Convention seems technocratic, limited to debates between commerce versus culture, and devoid of connections to historical trends.", "corpus_id": 157532912, "venue": "", "year": 2015, "author_names": [ "J P Singh" ], "n_citations": 4, "n_key_citations": 2, "score": 0 }, { "doc_id": "153840024", "title": "Whose finger on the button? british television and the politics of cultural control", "abstract": "'The study of television' John Corner suggests, 'has suffered from a lack of historical studies' This was 'a particular problem in Britain' where studies of television were prone to 'privileging questions of policy and organisation' rather than obtaining a sense of the power of television as a medium, assessing its cultural content and reception by viewers or the status and meaning of the medium, the television set and activity of watching it. Corner's own work on television history has broached such matters, but exceptions like Tim O'Sullivan's exploration through audience research and oral testimony of cultures of televiewing (in everyday life and as civic ritual around national events) in a Corner edited volume apart, has not induced many others to do so.1 Corner has hit upon a broader debate about the predilections of post 1945 British history that necessarily impacts upon writing about television more than radio, since television only became a mass activity in the mid 1950s. Critics charge that contemporary British history has too readily reproduced the categories used by its subjects (particularly political, social elites) and resisted integrating its own sub disciplinary boundaries (of the political, social, cultural, economic).2 Thus, there are studies of the magnitude of Asa Briggs' and Bernard Sendall's history of broadcasting authoritative accounts of personnel, policy and structures, but in which programming itself is less prominent. Des Freedman charts the Labour Party's oscillating television policies, but is less able to capture the mien of the television viewer.3 Television has featured as an adjunct of press and media histories,4 but has not received the sort of treatment that film or inter war radio has. Yet there seem grounds (popularity above all) for regarding television as more intimate to Britons than either film or radio.5 Programme content, meanings and reception have been more cultural studies' terrain. Many historians would concur with Dominic Strinati and Stephen Wagg that 'whereas popular culture was once dismissed as mass culture now its importance is such that, on occasion, it may be taken too seriously' What historians consider the interpretive and contextual abandon of cultural studies in its postmodernist forms at least has not encouraged them to stray into this territory. Yet that disserves the majority experience of television (which is as viewers) and its diversity as a genre and impact on everyday life. Might a history of television move beyond discussing it chiefly as an institutional mode of communication to the exclusion of its cultural forms; contemplate it visually and as something not only produced but also consumed? The extent to which it has not done so betrays historians' biases, since what was produced was (somewhat) easier to know. It suggests the degree to which historians have shared in classing television as culturally corrosive rather than attempting to account for its popularity. As historian Peter Mandler has it, whilst 'suspicion of television' was widespread at its 1950s outset, 'it lingered among academics, and among historians more than most'.6 Historians, in short, might prosper from spending more time watching television and less time sitting in judgement on it. Janet Thumim's recent collection attempts something like this, broaching programme content (for instance the penchant for nostalgia programming, repeats of vintage, retro classics) gendering viewers and attending to the television set as a technology requiring expert maintenance. Whilst always cognisant of the fluidity of meaning of a programme amongst individuals and across time and thus the 'difficulties of 'knowing' the historical audience' its essays attend to 'what audiences do with the 'texts' they consume' The text analogy might seem more useful to literary than historical scholars, but does flag up the numerous meanings television and its programmes might generate, both at the time and over time (as select television programmes become seen as representative sources for a certain period, understandings of them often shift dramatically) Nor does it preclude researching what another media historian John Ellis describes as 'the temporary meaningfulness of programmes at their initial broadcast' from which 'can be extrapolated much about the material culture of the time'.7 Rather than reflecting or fashioning society and values, this article provides evidence of a more interactive, dynamic relationship between television and its viewers in the imagining of both by politicians, cultural commentators [from the New Left to Mary Whitehouse's National Viewers and Listeners' Association (VALA) and educational pressure groups] and television critics. Debates about television as it became a, if not the, popular leisure and cultural activity amongst Britons in the 1950s and 1960s, were fixated with the content of programmes, their impact on audiences and the act of televiewing. In this were disclosed assumptions and readings of cultural quality and perceptions of television's audience. Television's textuality entails both the content and reception of programming and the social setting and meanings put by televiewing. It illustrates this through debates at commercial television's inception in 1955 and the government commissioned Pilkington Committee on Broadcasting (1960 1962) and its legacy debates it argues have since been rehearsed repeatedly. It assesses television's impact on politics as a medium and how the main parties viewed it. Labour was critical of Independent (commercial) Television (ITV) broadcasting and paternalist in traditional British Broadcasting Corporation (BBC, the public broadcaster) style towards audiences, but the Conservatives cannot be reduced to cheerleaders of ITV, pandering to audience tastes. Their suspicions of its social effects co existed uneasily with a belief that competition would improve programming, resulting in Pilkington and by the later 1960s in Whitehouse's campaign to 'clean up' television. Both parties then are better understood as relating uneasily to television. Socially (or in taste terms) both were closer to (although hardly uncritical of) the BBC's content; politically the Conservatives took the credit for ITV and its popularity at the risk of alienating its middle class vote; Labour's opposition put it at odds with its traditional supporters. This provides a good example of how a political party does not automatically reflect their electorate. Both were reluctant to hand over to popular, remote control of television and Labour especially protective, doubting the audience's ability to handle their newfound and prized choice gainfully. But television's popularity limited party control of it. As important was that as a medium television was changing how politics was performed and (in both its popularity and content) disturbing politics' claim to inform cultural life and politics' authority per se.", "corpus_id": 153840024, "venue": "", "year": 2005, "author_names": [ "Lawrence Black" ], "n_citations": 15, "n_key_citations": 0, "score": 0 }, { "doc_id": "191255856", "title": "Hair: Styling, Culture and Fashion", "abstract": "This book, edited by Cheang with G. Biddle Perry offers the first thorough examination of the social importance of the expressive, representational and material possibilities of human hair. The presentation, manipulation and daily experience of human hair are situated within the processes of inscribing cultural meaning, through a complex network of normalising standards and discursive practices. Approaching a diversity of contexts, from classical ballet to television sitcoms, and from India to the East End, this collection examines hair across age, race, ethnicity, gender and sexuality. In addition to co editing the collection, Cheang co authored wrote the substantial introductory and concluding essays, which offer an original synthesis of cultural studies and anthropological approaches to the study of hair. Cheang also wrote the chapter 'Roots: Hair and Race' a 6,000 word essay that analyses museum collections of hair in relation to constructions of 'race' (pp.27 42) In particular, Cheang worked with medical, anthropological and natural history collections that include both samples of human hair and photographs. These primary sources are analysed in the context of a critical reading of 19th century literature that attempted to explain 'racial difference' Extending this research, Cheang and Biddle Perry co wrote a new 10,000 word entry on 'Hair' for the November 2011 online update to the Berg Encylopedia of World Dress and Fashion. Other closely related activities included the organisation and moderation by Cheang and Biddle Perry of the international symposium 'Hair Stories: Practice, Theory, Culture' at the V&A Museum (2009) Following publication of Hair: Styling, Culture and Fashion, Cheang was invited to comment on the meaning of hair collecting and beauty styling in the popular media, including Vogue (2011) The Stylist (2011) Observer Magazine (2013) Elle Canada website (2013) and in the television series programme Taboo (National Geographic Channel)", "corpus_id": 191255856, "venue": "", "year": 2008, "author_names": [ "Sarah Cheang" ], "n_citations": 13, "n_key_citations": 2, "score": 0 }, { "doc_id": "151037431", "title": "Broadcasting in the new Ireland", "abstract": "The inward migration of the late 1990s and 2000s has changed the fabric of society in Ireland. It altered the composition of media audiences for Irish broadcasters, and raised questions as to how broadcasters discuss migration and related issues; incorporate new audiences into their programming; and deal with questions of media representation and production. Investigating the significance of media in a changing society demands a multi layered approach to research. This two year research project involved research interviews and surveys with media producers in public, commercial and community radio and television; in depth qualitative research with Nigerian, Chinese and Polish research participants nationwide; and an analysis of media policy nationally and comparatively in Europe. Irish media channels in all sectors have responded to this changed social context through programming and a range of initiatives concerning multiculturalism, interculturalism, and diversity. Part 1 of this report discusses the background to these ideas in media policy, media theory and wider public debate, and provides a basis for interpreting and evaluating their use and significance in Ireland. It illustrates how these ideas must be understood as relatively open discourses shaped by their use in different contexts, rather than as set ideas or policy frameworks. The regular media use of Nigerian, Chinese and Polish participants discussed in Part 2 integrates local, Irish national, home country national, diasporic and transnational channels. This daily integration is facilitated and limited by a range of material factors, notably newspaper circulation, access to terrestrial Irish media, and Internet access. This integration is an ongoing process influenced by language proficiency, length of time living in Ireland, orientations towards past experiences and future horizons, and cultural capital. Integrated media use involves relational viewing and engagement, in which Irish media and other sources are compared and contrasted, and organized in relation to each other according to different needs, political readings, and pleasures. A feature of daily, integrated media use is a fluid understanding of local/national/international media. International news featuring issues/ contexts of interest is often intimately evaluated, and frequently seen as being as consequential as representations of migrants in Ireland. The presence of UK based media in the public sphere in Ireland relativizes what is understood as Irish media. For participants from countries as relatively large and regionally complex as Nigeria, China and Poland, the national horizons of Irish news were often understood as local or parochial, and the scope of international news as being similarly limited; Media monitoring and evaluation is more pronounced among Nigerian participants, however all focus groups discussed the assumed consequentiality of representations of migrants for their acceptance in Ireland. As well as having a responsibility to provide fair and accurate representation, many participants commented on the need for an increased plurality of sources, perspectives and foci in Irish media. This increased plurality was discussed in relation to news, and also the spectrum of general programming available on television. This understanding of diversity contrasted with the institutional idea of diversity underpinning some public service broadcasting. Programming dealing with multiculturalism though frequently not primarily aimed at migrant audiences was often not received and interpreted as such. This understanding of diversity does not preclude the importance attached by many discussants to seeing increased diversity of people on Irish television. Both mainstream Irish media and media aimed at national migrant populations in Ireland were felt not to represent the internal diversity and differences of migrant populations. Diasporic and transnational media are centrally important for many participants across the focus group streams, but not in obvious or predictable ways. News, lifestyle and fictional programming on these services are watched relationally and critically, and discussed according to a range of aesthetic, affective and political criteria. Much television use has migrated to Internet platforms, almost to the same extent as newspaper use. This shift is a part of the pervasive importance of Internet use for many participants. This viewing and listening was integrated into a range of other multimedia and communicative practices online. However Internet use is restricted for many by cost and opportunity, and for those with the means, by widely criticized connection speeds and coverage. RTE has engaged consistently with the need to develop relevant programming and institutional policies. Part 3 documents the development of policy; the shift in radio programming away from first wave programmes mainly aimed at representing migrant lives and experiences to a mainstream Irish audience to a still evolving emphasis on integrating diversity into programming; the shift in television programming towards a reliance on hybrid reality formats to normalize multiculturalism for a national public audience Community radio has been an important medium and space for the development of migrant produced programming, however the quantity and scope of this programming has declined in 2009, for a variety of reasons. Community television currently offers significant possibilities for both migrant led programming and for the integration of a broad spectrum of perspectives and voices in media production TV3 and TG4 regard specific policies in this area as overly rigid and potentially counter productive, and instead argue for an idea of diversity emerging organically from the scope and focus of their programmes on society in Ireland. The commercial radio sector is open to ideas and initiatives, however pragmatic concerns regarding economies of scale and the relationship between investment and return has meant that few such initiatives or radio programmes have been developed. Exceptions to this general trend are discussed in Part 3. International, comparative research would suggest that broadcasting in Ireland, particularly public service broadcasting, has reached a point where first wave programming primarily aimed at mainstream audience understanding is no longer relevant, but where the challenge of developing more integrated approaches to programme development and media production under the rubric of diversity is only beginning to take shape. The overarching conclusion of this report suggests that this challenge involves a fundamental shift in considering how audiences, and the public, are composed. The recommendations of this report discuss different aspects of this challenge by building on issues raised in the audience research. In particular, the research emphasizes the need to focus as much on the diversity of genres, programmes, and perspectives broadcast as the more conventional idea of diversity as involving the representation of diverse identities. This important difference in emphasis raises critical questions concerning the current shift to frameworks of diversity as they are currently understood and practiced in the different broadcast institutions. The conclusions draw attention to the current and future importance of training and the active inclusion of minorities in programme development and production. While cognizant of the difficulties, pitfalls and political controversies surrounding such issues, research suggests a basic, if complex, relationship between the plurality of media workers and a plurality of perspectives. The recommendations aimed at broadcasters draw attention to a variety of ways that this could be done.", "corpus_id": 151037431, "venue": "", "year": 2010, "author_names": [ "Gavan Titley", "Aphra Kerr", "Rebecca King O'Riain" ], "n_citations": 11, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "214185345", "title": "Behavioural Thatcherism and Nostalgia: tracing the everyday consequences of holding Thatcherite values", "abstract": "With the passing of time and the benefit of hindsight, there is, again, growing interest in Thatcherism above all in its substantive and enduring legacy. But, to date at least, and largely due to data limitations, little of that work has focussed on tracing the behavioural consequences, at the individual level, of holding Thatcherite values. That oversight we seek both to identify more clearly and begin to address. Deploying new survey data, we use multiple linear regression and structural equation modelling to unpack the relationship between 'attitudinal' and 'behavioural' Thatcherism. In the process, we reveal the considerably greater behavioural consequences of holding neo liberal, as distinct from neo conservative, values whilst identifying the key mediating role played by social, political and economic nostalgia. We find that neo liberal values are positively associated with behavioural Thatcherism, whilst neo conservative values are negatively associated with behavioural Thatcherism. In exploring the implications, we also reveal some intriguing interaction effects between economic nostalgia and neo conservative values in the centre left vote for Brexit. In the conclusion, we reflect on the implications of these findings for our understanding of the legacy of Thatcherism and, indeed, for Brexit itself.", "corpus_id": 214185345, "venue": "", "year": 2020, "author_names": [ "Stephen Farrall", "Colin Hay", "Emily M Gray", "Philip Mike Jones" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "226613310", "title": "'The Iron Lady? She Devastated the Country' Former Scottish Steelworkers' Narratives of Unions, Community and Thatcherism", "abstract": "The impact of deindustrialisation on former occupation dependent communities has been overwhelmingly negative, yet it remains difficult to capture fully the emotional disruption of deindustrialisation and its aftereffects. This chapter draws on seventeen oral history interviews with former Scottish steelworkers, it explores their post redundancy experiences of trade unionism and occupational community compared to steelmaking, and concludes with a discussion of steelworkers' interpretations of the underlying motivations of Thatcherism.", "corpus_id": 226613310, "venue": "", "year": 2020, "author_names": [ "J M Ferns" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "127576549", "title": "Thatcherism and Planning", "abstract": "This work explores the impact and influence of the New Right's intentions for planning through Simplified Planning Zones. It identifies the contradictions and confusion of Thatcherism that led to vague legislation and objectives allowing localities to interpret Thatcherism for themselves, often using policies such as Simplified Planning Zones for reasons different than those intended. This study examines four Simplified Planning Zones in detail, and concludes that local authorities have substituted their own objectives for the zones and used them for reasons which are at odds with their Thatcherite aims. This work therefore consolidates the implementation perspective of Thatcherite policy failure through the example of Simplified Planning Zones.", "corpus_id": 127576549, "venue": "", "year": 2019, "author_names": [ "Philip Allmendinger" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "226455005", "title": "Thatcher's Young Men and the End of the Party: Parody, Predictions and Problems in Literary Representations of Thatcherism", "abstract": "As Thatcherism's long legacy in British politics faces new challenges, its original contradictions are increasingly exposed. This chapter links two of them: Thatcherism as nationalist project versus its orientation towards transnational wealth; and its appeal to ambitious, destructively creative young men versus its social conservatism. The chapter explores that appeal through its literary representations from Alan Hollinghurst, Hanif Kureishi, and Ian McEwan.", "corpus_id": 226455005, "venue": "", "year": 2020, "author_names": [ "Dominic Dean" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "226627948", "title": "Intellectual Reactions to Thatcherism: Conceptions of Citizenship and Civil Society from 1990 2010", "abstract": "This chapter investigates Thatcherism's legacy by examining its ideological impact on conceptions of citizenship and civil society in the 1990s and 2000s. It argues that in the 1990s, political thinkers on the Left as well as the Right largely accepted the Thatcherite argument that a global free market could be harmonized with a flourishing civil society, but grew far more critical in the 2000s, querying Thatcherism's fundamental ideological assumptions.", "corpus_id": 226627948, "venue": "", "year": 2020, "author_names": [ "Edward D Neill" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "226030395", "title": "The less acceptable face of capitalism a study of British documentary during the rise of Thatcherism", "abstract": "This thesis is a study of the oppositional documentary practices produced by the Left in Britain during the rise of the New Right (c1968 1997) By situating the issue of class at the centre of my study, I seek to challenge poststructuralist histories of this moment which, I suggest, inadvertently hastened the triumph of Thatcherism by foreclosing the production of, or the devotion of critical attention to, representations of class. One project forms the kernel of this inquiry. It is Exit Photography Group's photobook Survival Programmes: In Britain's Inner Cities (Milton Keynes: The Open University Press, 1982) a study in words and images of the those whom Exit designate 'the less acceptable face of capitalism' This thesis is a careful and sustained analysis of Survival Programmes and a select series of interrelated documentary projects, both photographic and filmic, with which I place the photobook in conversation. Through the prism of Exit's project, I explore representations of class and how those representations intersect with questions of race and gender, as well as with concerns about the changing usages of, and connotations attached to, public and private space. My approach is informed by the contemporaneous writings of the cultural studies and media theorist Stuart Hall. His work provides a lens through which I interrogate how oppositional image makers have mobilised the camera as a prism through which to scrutinise Thatcherism, as well as the mass media institutions through which that ideology has been creatively mediated and mobilised. I ask if we can write social histories of documentary after 1979 without reverting to the duality between the naive celebration of so called \"community photography\" on the one hand and, on the other, deterministic accounts of the inevitable critical and political failure of the documentary modality.", "corpus_id": 226030395, "venue": "", "year": 2020, "author_names": [ "Stephanie King" ], "n_citations": 0, "n_key_citations": 0, "score": 3 }, { "doc_id": "225304875", "title": "Data Driven Government: The Triumph of Thatcherism or the Revenge of Society?", "abstract": "Margaret Thatcher's statement that 'there is no such thing as society' has overshadowed Conservative Party politics since the 1980s, and has been the subject of exegesis and attempts at repudiation ever since. This chapter considers the statement in the context of Angus Maude's critique of 'society' as a statistical abstraction, which comes, erroneously, to be taken as an agent in its own right, able to take on the responsibilities of individuals to their communities and 'little platoons' and ultimately to become the end of policy itself. This digital modernity, nascent in Maude's and Thatcher's day, is becoming increasingly influential, thanks to data based policy and data driven agency. The chapter argues that Maude's subtler analysis still yields a conservative critique of digital modernity, whereas the less nuanced neoliberal individualism valorised by Thatcher may be seen as one of its enablers.", "corpus_id": 225304875, "venue": "", "year": 2020, "author_names": [ "Kieron O'Hara" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "216595184", "title": "Euroscepticism, Thatcherism and Brexit", "abstract": "\"The British people have spoken and decided to remain in [a] reformed European Union,\" British Prime Minister David Cameron planned to proclaim on Friday, June 24, 2016. Instead, he delivered his resignation speech, saying, \"I was absolutely clear about my belief that Britain is stronger, safer and better off inside the EU..But the British people made a different decision to take a different path.\" The outcome of the United Kingdom European Union membership referendum sent shockwaves around Britain, Europe, and the world. Brexit constitutes the first time a state has voted to exit a major supranational institution and has since left the UK's role in a globalized world in a state of uncertainty.The cause of this unexpected referendum result is highly contested. On the one hand, the Brexit vote can be viewed as a revolt by the 'losers' or those left behind by globalization. On the other hand, the unexpected outcome may be attributed to, as Tim Shipman put it, \"the culmination of three decades of Euroscepticism cloaking a nation in its suffocating embrace.\"", "corpus_id": 216595184, "venue": "", "year": 2020, "author_names": [ "Amira Higazy" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226606392", "title": "Thatcherism and Wales: Impacts and Legacies", "abstract": "The Conservatives have usually been Wales' second political party. Before the 2019 general election, the Party's best performance was in the Thatcher era. This chapter explores the links between that period and the very recent one. It examines how Thatcher's Welsh Office was, in some regards, proactive and interventionist in Wales, especially in the way it supported and bolstered the Welsh language. The Party also helped make Wales look and feel more like its own nation state. However, the chapter also covers the way in which the Party undermined a key symbol of Wales its heavy industry prompting long lasting political divisions in the process.", "corpus_id": 226606392, "venue": "", "year": 2020, "author_names": [ "Sam Blaxland" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "158085097", "title": "The Legacy of Thatcherism in European Labour Relations: The Impact of the Politics of Neo Liberalism and Austerity on Collective Bargaining in a Fragmenting Europe", "abstract": "", "corpus_id": 158085097, "venue": "", "year": 2019, "author_names": [ "Miguel Martinez Lucio", "Aristea Koukiadaki", "Isabel Greco Tavora" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "211101677", "title": "The COVID 19 epidemic", "abstract": "The current outbreak of the novel coronavirus Covid 19 (coronavirus disease 2019; previously 2019 nCoV) epi centered in Hubei Province of the People's Republic of China, has spread to many other countries. On January 30, 2020, the WHO Emergency Committee declared a global health emergency based on growing case notification rates at Chinese and international locations. The case detection rate is changing hourly and daily and can be tracked in almost real time on website provided by Johns Hopkins University [1] and other websites. As of early February 2020, China bears the large burden of morbidity and mortality, whereas the incidence in other Asian countries, in Europe and North America remains low so far.", "corpus_id": 211101677, "venue": "Tropical medicine international health TM IH", "year": 2020, "author_names": [ "Thirumalaisamy P Velavan", "Christian G Meyer" ], "n_citations": 1135, "n_key_citations": 26, "score": 1 }, { "doc_id": "212685525", "title": "COVID 19 and Italy: what next?", "abstract": "Summary The spread of severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) has already taken on pandemic proportions, affecting over 100 countries in a matter of weeks. A global response to prepare health systems worldwide is imperative. Although containment measures in China have reduced new cases by more than 90% this reduction is not the case elsewhere, and Italy has been particularly affected. There is now grave concern regarding the Italian national health system's capacity to effectively respond to the needs of patients who are infected and require intensive care for SARS CoV 2 pneumonia. The percentage of patients in intensive care reported daily in Italy between March 1 and March 11, 2020, has consistently been between 9% and 11% of patients who are actively infected. The number of patients infected since Feb 21 in Italy closely follows an exponential trend. If this trend continues for 1 more week, there will be 30 000 infected patients. Intensive care units will then be at maximum capacity; up to 4000 hospital beds will be needed by mid April, 2020. Our analysis might help political leaders and health authorities to allocate enough resources, including personnel, beds, and intensive care facilities, to manage the situation in the next few days and weeks. If the Italian outbreak follows a similar trend as in Hubei province, China, the number of newly infected patients could start to decrease within 3 4 days, departing from the exponential trend. However, this cannot currently be predicted because of differences between social distancing measures and the capacity to quickly build dedicated facilities in China.", "corpus_id": 212685525, "venue": "The Lancet", "year": 2020, "author_names": [ "Andrea Remuzzi", "Giuseppe Remuzzi" ], "n_citations": 1913, "n_key_citations": 51, "score": 1 }, { "doc_id": "214345464", "title": "Chest Imaging Appearance of COVID 19 Infection", "abstract": "Coronavirus disease 2019 (COVID 19) (previously known as novel coronavirus [2019 nCoV] first reported in China, has now been declared a global health emergency by the World Health Organization. As confirmed cases are being reported in several countries from all over the world, it becomes important for all radiologists to be aware of the imaging spectrum of the disease and contribute to effective surveillance and response measures. (c) RSNA, 2020 See editorial by Kay and Abbara in this issue.", "corpus_id": 214345464, "venue": "Radiology. Cardiothoracic imaging", "year": 2020, "author_names": [ "Weifang Kong", "Prachi Pragya Agarwal" ], "n_citations": 223, "n_key_citations": 4, "score": 0 }, { "doc_id": "212657717", "title": "The COVID 19 social media infodemic", "abstract": "We address the diffusion of information about the COVID 19 with a massive data analysis on Twitter, Instagram, YouTube, Reddit and Gab. We analyze engagement and interest in the COVID 19 topic and provide a differential assessment on the evolution of the discourse on a global scale for each platform and their users. We fit information spreading with epidemic models characterizing the basic reproduction number \\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin} 69pt} \\begin{document}$R_0$\\end{document}R0 for each social media platform. Moreover, we identify information spreading from questionable sources, finding different volumes of misinformation in each platform. However, information from both reliable and questionable sources do not present different spreading patterns. Finally, we provide platform dependent numerical estimates of rumors' amplification.", "corpus_id": 212657717, "venue": "Scientific reports", "year": 2020, "author_names": [ "Matteo Cinelli", "Walter Quattrociocchi", "Alessandro Galeazzi", "Carlo Michele Valensise", "Emanuele Brugnoli", "Ana Lucia Schmidt", "Paola Zola", "Fabiana Zollo", "Antonio Scala" ], "n_citations": 526, "n_key_citations": 13, "score": 1 }, { "doc_id": "213556875", "title": "Fractal kinetics of COVID 19 pandemic", "abstract": "We give an update to the original paper posted on 2/17/20 now (as of 3/1/20) the China deaths are rapidly decreasing, and we find an exponential decline to the power law similar to the that predicted by the network model of \\citet{vazquez_polynomial_2006} At the same time, we see non China deaths increasing rapidly, and similar to the early behavior of the China statistics. Thus, we see three stages of the spread of the disease in terms of number of deaths: exponential growth, power law behavior, and then exponential decline in the daily rate. (Original abstract) The novel coronavirus (COVID 19) continues to grow rapidly in China and is spreading in other parts of the world. The classic epidemiological approach in studying this growth is to quantify a reproduction number and infection time, and this is the approach followed by many studies on the epidemiology of this disease. However, this assumption leads to exponential growth, and while the growth rate is high, it is not following exponential behavior. One approach that is being used is to simply keep adjusting the reproduction number to match the dynamics. Other approaches use rate equations such as the SEIR and logistical models. Here we show that the current growth closely follows power law kinetics, indicative of an underlying fractal or small world network of connections between susceptible and infected individuals. Positive deviations from this growth law might indicate either a failure of the current containment efforts while negative deviations might indicate the beginnings of the end of the pandemic. We cannot predict the ultimate extent of the pandemic but can get an estimate of the growth of the disease.", "corpus_id": 213556875, "venue": "medRxiv", "year": 2020, "author_names": [ "Anna L Ziff", "Robert M Ziff" ], "n_citations": 97, "n_key_citations": 5, "score": 0 }, { "doc_id": "214461006", "title": "Novel coronavirus (COVID 19)", "abstract": "Advice for staff and students planning to travel to, or currently travelling through China. January 2020", "corpus_id": 214461006, "venue": "", "year": 2020, "author_names": [ "Richard Parker" ], "n_citations": 84, "n_key_citations": 4, "score": 0 }, { "doc_id": "214601374", "title": "COVID 19 (Coronavirus)", "abstract": "This strain of coronavirus is a new one and scientists do not yet know all there is to know about it. While these common sense points will always be helpful, it is important that you keep up to date with the advice being given by the Centers for Disease Control and Prevention (CDC) and NHS England and how it might affect you personally. These suggestions have been produced using the most up to date advice available to us from our Scientific and Medical Advisors and are not intended to replace or supersede advice you may have been given from your health care professional.", "corpus_id": 214601374, "venue": "Lymphatic research and biology", "year": 2020, "author_names": [ "Refugio en el Lugar" ], "n_citations": 30, "n_key_citations": 2, "score": 0 }, { "doc_id": "214588955", "title": "COVID 19 Epidemic Editorial", "abstract": "COVID 19 is a novel form of coronavirus which has spread from its initial identification in Wuhan, China, and has been declared a pandemic by the World Health Organisation (WHO) [1] Coronaviruses are a large family of viruses that cause illnesses ranging from the common cold to more severe diseases such as Middle East Respiratory Syndrome (MERSCoV) and Severe Acute Respiratory Syndrome (SARS CoV) Coronaviruses are zoonotic, meaning they are transmitted between animals and people. Several known coronaviruses are circulating in animals that have not yet infected humans [2] but it appears that COVID 19 has crossed species from bats to snakes [3] and pangolins then to humans, initially via the live animal 'wet markets' of Wuhan [4]", "corpus_id": 214588955, "venue": "", "year": 2020, "author_names": [ "Graham Williamson" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "212764653", "title": "Covid 19 Wuhan", "abstract": "Coronaviruses are an incredibly diverse family of viruses, found in many animal species, and are commonly encountered in clinical practice during the cold and flu season. We often encounter the common coronaviruses (HKU1, NL63, 229E and OC43) in our surveillance and epidemiological studies in schools, clinics and long term care settings.", "corpus_id": 212764653, "venue": "", "year": 2020, "author_names": [ "Jonathan L Temte" ], "n_citations": 20, "n_key_citations": 7, "score": 0 }, { "doc_id": "213736897", "title": "COVID 19: Weekly Update", "abstract": "Dear Readers,The 2019 novel coronavirus epidemic that has emerged from Wuhan, China, appears to have the potential to have a major health impact on a", "corpus_id": 213736897, "venue": "", "year": 2020, "author_names": [ "Richard T Ellison" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "205581870", "title": "Communication, teamwork, and trust in an office based practice.", "abstract": "A s a certified registered nurse anesthetist (CRNA) I provide anesthesia services for plastic and endoscopy procedures in an office based setting. Office based practice has unique advantages and efficiencies that are similar to an outpatient surgery center while requiring the same vigilance and standard of care as any other perioperative practice setting. Advantages of officebased practice, when compared to an inpatient or other outpatient setting, include increased patient and provider convenience and satisfaction, scheduling flexibility, staffing consistency, efficiency, patient privacy, increased cost effectiveness, and decreased risk of infection. My experience as a member of small clinical teams, providing patient care for both brief and sometimes lengthy procedures, confirms the importance of teamwork, effective communication, and collaboration during all phases of patient care. Office based team members have multiple responsibilities that they complete collaboratively. These responsibilities include optimizing patient care, improving communication with the patient, and building and promoting a culture of safety. Additional responsibilities that affect the provision of care in the office based setting include participating in professional advocacy, participating in professional associations and leadership activities,", "corpus_id": 205581870, "venue": "AORN journal", "year": 2015, "author_names": [ "Sharon Pearce" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "128362998", "title": "Hospital nurse staffing models and patient and staff related outcomes.", "abstract": "BACKGROUND Nurses comprise the largest component of the health workforce worldwide and numerous models of workforce allocation and profile have been implemented. These include changes in skill mix, grade mix or qualification mix, staff allocation models, staffing levels, nursing shifts, or nurses' work patterns. This is the first update of our review published in 2011. OBJECTIVES The purpose of this review was to explore the effect of hospital nurse staffing models on patient and staff related outcomes in the hospital setting, specifically to identify which staffing model(s) are associated with: 1) better outcomes for patients, 2) better staff related outcomes, and, 3) the impact of staffing model(s) on cost outcomes. SEARCH METHODS CENTRAL, MEDLINE, Embase, two other databases and two trials registers were searched on 22 March 2018 together with reference checking, citation searching and contact with study authors to identify additional studies. SELECTION CRITERIA We included randomised trials, non randomised trials, controlled before after studies and interrupted time series or repeated measures studies of interventions relating to hospital nurse staffing models. Participants were patients and nursing staff working in hospital settings. We included any objective reported measure of patient staff related, or economic outcome. The most important outcomes included in this review were: nursing staff turnover, patient mortality, patient readmissions, patient attendances at the emergency department (ED) length of stay, patients with pressure ulcers, and costs. DATA COLLECTION AND ANALYSIS We worked independently in pairs to extract data from each potentially relevant study and to assess risk of bias and the certainty of the evidence. MAIN RESULTS We included 19 studies, 17 of which were included in the analysis and eight of which we identified for this update. We identified four types of interventions relating to hospital nurse staffing models: introduction of advanced or specialist nurses to the nursing workforce; introduction of nursing assistive personnel to the hospital workforce; primary nursing; and staffing models.The studies were conducted in the USA, the Netherlands, UK, Australia, and Canada and included patients with cancer, asthma, diabetes and chronic illness, on medical, acute care, intensive care and long stay psychiatric units. The risk of bias across studies was high, with limitations mainly related to blinding of patients and personnel, allocation concealment, sequence generation, and blinding of outcome assessment.The addition of advanced or specialist nurses to hospital nurse staffing may lead to little or no difference in patient mortality (3 studies, 1358 participants) It is uncertain whether this intervention reduces patient readmissions (7 studies, 2995 participants) patient attendances at the ED (6 studies, 2274 participants) length of stay (3 studies, 907 participants) number of patients with pressure ulcers (1 study, 753 participants) or costs (3 studies, 617 participants) as we assessed the evidence for these outcomes as being of very low certainty. It is uncertain whether adding nursing assistive personnel to the hospital workforce reduces costs (1 study, 6769 participants) as we assessed the evidence for this outcome to be of very low certainty. It is uncertain whether primary nursing (3 studies, 464 participants) or staffing models (1 study, 647 participants) reduces nursing staff turnover, or if primary nursing (2 studies, 138 participants) reduces costs, as we assessed the evidence for these outcomes to be of very low certainty. AUTHORS' CONCLUSIONS The findings of this review should be treated with caution due to the limited amount and quality of the published research that was included. We have most confidence in our finding that the introduction of advanced or specialist nurses may lead to little or no difference in one patient outcome (i.e. mortality) with greater uncertainty about other patient outcomes (i.e. readmissions, ED attendance, length of stay and pressure ulcer rates) The evidence is of insufficient certainty to draw conclusions about the effectiveness of other types of interventions, including new nurse staffing models and introduction of nursing assistive personnel, on patient, staff and cost outcomes. Although it has been seven years since the original review was published, the certainty of the evidence about hospital nurse staffing still remains very low.", "corpus_id": 128362998, "venue": "The Cochrane database of systematic reviews", "year": 2019, "author_names": [ "Michelle M Butler", "Tim Schultz", "Phil Halligan", "Ann Sheridan", "Leigh Kinsman", "Thomas Rotter", "Jonathan Beaumier", "Robyn Gail Kelly", "Jonathan Drennan" ], "n_citations": 57, "n_key_citations": 1, "score": 1 }, { "doc_id": "48357230", "title": "Association of Nurse Engagement and Nurse Staffing on Patient Safety", "abstract": "Supplemental Digital Content is Available in the Text. Background: Nurse engagement is a modifiable element of the work environment and has shown promise as a potential safety intervention. Purpose: Our study examined the relationship between the level of engagement, staffing, and assessments of patient safety among nurses working in hospital settings. Methods: A secondary analysis of linked cross sectional data was conducted using survey data of 26 960 nurses across 599 hospitals in 4 states. Logistic regression models were used to examine the association between nurse engagement, staffing, and nurse assessments of patient safety. Results: Thirty two percent of nurses gave their hospital a poor or failing patient safety grade. In 25% of hospitals, nurses fell in the least or only somewhat engaged categories. A 1 unit increase in engagement lowered the odds of an unfavorable safety grade by 29% (P .001) Hospitals where nurses reported higher levels of engagement were 19% (P .001) less likely to report that mistakes were held against them. Nurses in poorly staffed hospitals were 6% more likely to report that important information about patients \"fell through the cracks\" when transferring patients across units (P .001) Conclusions: Interventions to improve nurse engagement and adequate staffing serve as strategies to improve patient safety.", "corpus_id": 48357230, "venue": "Journal of nursing care quality", "year": 2019, "author_names": [ "J Margo Brooks Carthon", "Linda A Hatfield", "Colin M Plover", "Andrew M Dierkes", "Lawrence Davis", "Taylor Hedgeland", "Ann Marie Sanders", "Frank E Visco", "Sara Holland", "James Ballinghoff", "Mary Del Guidice", "Linda Aiken" ], "n_citations": 39, "n_key_citations": 3, "score": 0 }, { "doc_id": "54471761", "title": "Association of nurse staffing and nursing workload with ventilator associated pneumonia and mortality: a prospective, single center cohort study.", "abstract": "BACKGROUND Nurse understaffing and increased nursing workload have been associated with increased risk of adverse patient outcomes and even mortality. AIM To determine whether nurse staffing and nursing workload are associated with ventilator associated pneumonia and mortality. METHODS This prospective, observational cohort study was conducted in a single tertiary level teaching hospital in Finland during 2014 2015. The association between nurse staffing, nursing workload and prognosis was determined using daily nurse to patient ratios, Therapeutic Intervention Scoring System and Intensive Care Nursing Scoring System scores, and Intensive Care Nursing Scoring System indices. Ventilator associated pneumonia was defined according to the Centers for Disease Control and Prevention criteria. FINDINGS Evaluable data was available for 85 patients. The overall ventilator associated pneumonia and 28 day mortality rates were 23.5% and 35.3% respectively. Nurse staffing, measured as the daily lowest nurse to patient ratio (P 0.006) and median Intensive Care Nursing Scoring System index (P 0.046) were significantly lower in patients with ventilator associated pneumonia. In addition, nursing workload, measured as median scores obtained by the Therapeutic Intervention Scoring System (P 0.009) and Intensive Care Nursing Scoring System (P 0.03) was significantly higher in infected patients. The median (P 0.02) and daily highest (P 0.03) Intensive Care Nursing Scoring System scores were significantly higher in non survivors. CONCLUSIONS Lower nurse staffing and increased nursing workload are associated with ventilator associated pneumonia and mortality, demonstrating that adequate staffing is a prerequisite for the availability and quality of critical care services.", "corpus_id": 54471761, "venue": "The Journal of hospital infection", "year": 2019, "author_names": [ "Miia Marika Jansson", "Hannu Syrjala", "Tero Ilmari Ala-Kokko" ], "n_citations": 25, "n_key_citations": 2, "score": 1 }, { "doc_id": "81629838", "title": "Nurse staffing level and quality of acute care services: Evidence from cross national panel data analysis in OECD countries", "abstract": "Background Most of previous studies aimed to estimate the effect of nurse staffing on quality of acute hospital care have used stochastic methods and their results are mixed. Objective To measure the magnitude of effect of nurse staffing level on increasing quality of acute care services in long run. Data The number of practicing nurses' density per 1000 population as the proxy of nurse staffing level and three Health Care Quality Indicators (HCQI) included 30 day mortality per 100 patients based on acute myocardial infarction (MORTAMIO) hemorrhagic stroke (MORTHSTO) and ischemic stroke (MORTISTO) were collected as a part of ongoing project by OECD.org in panels of 26 OECD countries over 2005 2015 period. Method Panel data analysis. Results There were committed relationships from nurse staffing level to the enhancement of HCQI i.e. 1% increase in nurse staffing level would reduce the rates of patient mortality based on MORTAMIO, MORTHSTO and MORTISTO by 0.65% 0.60% and 0.80% respectively. Furthermore, the role of nurse staffing level in increasing overall HCQI were simulated at the highest level in Sweden 3.53) Denmark 3.31) Canada 2.59) Netherlands 2.33) Finland 2.09) Switzerland 1.72) Australia 1.64) and United States 1.53) Conclusion A higher proportion of nurses staffing level is associated with higher quality of acute care services in OECD countries. Also, the nursing characteristics of Sweden, Denmark, Canada, Netherlands, Finland, Switzerland, Australia and United States would be good patterns for other countries to maximize nursing outcomes in the care of patients with acute and life threatening conditions by reducing the risk of complication, mortality and adverse clinical outcomes.", "corpus_id": 81629838, "venue": "International journal of nursing sciences", "year": 2019, "author_names": [ "Arshia Amiri", "Tytti Solankallio-Vahteri" ], "n_citations": 17, "n_key_citations": 1, "score": 0 }, { "doc_id": "3596826", "title": "Post operative mortality, missed care and nurse staffing in nine countries: A cross sectional study", "abstract": "Background Variation in post operative mortality rates has been associated with differences in registered nurse staffing levels. When nurse staffing levels are lower there is also a higher incidence of necessary but missed nursing care. Missed nursing care may be a significant predictor of patient mortality following surgery. Aim Examine if missed nursing care mediates the observed association between nurse staffing levels and mortality. Method Data from the RN4CAST study (2009 2011) combined routinely collected data on 422,730 surgical patients from 300 general acute hospitals in 9 countries, with survey data from 26,516 registered nurses, to examine associations between nurses' staffing, missed care and 30 day in patient mortality. Staffing and missed care measures were derived from the nurse survey. A generalized estimation approach was used to examine the relationship between first staffing, and then missed care, on mortality. Bayesian methods were used to test for mediation. Results Nurse staffing and missed nursing care were significantly associated with 30 day case mix adjusted mortality. An increase in a nurse's workload by one patient and a 10% increase in the percent of missed nursing care were associated with a 7% (OR 1.068, 95% CI 1.031 1.106) and 16% (OR 1.159 95% CI 1.039 1.294) increase in the odds of a patient dying within 30 days of admission respectively. Mediation analysis shows an association between nurse staffing and missed care and a subsequent association between missed care and mortality. Conclusion Missed nursing care, which is highly related to nurse staffing, is associated with increased odds of patients dying in hospital following common surgical procedures. The analyses support the hypothesis that missed nursing care mediates the relationship between registered nurse staffing and risk of patient mortality. Measuring missed care may provide an 'early warning' indicator of higher risk for poor patient outcomes.", "corpus_id": 3596826, "venue": "International journal of nursing studies", "year": 2018, "author_names": [ "Jane E Ball", "Luk Bruyneel", "Linda Aiken", "Walter Sermeus", "Douglas Sloane", "Anne Marie Rafferty", "Rikard Lindqvist", "Carol Tishelman", "Peter Griffiths" ], "n_citations": 213, "n_key_citations": 4, "score": 1 }, { "doc_id": "208191197", "title": "The impact of nurse staffing levels and nurse's education on patient mortality in medical and surgical wards: an observational multicentre study", "abstract": "BackgroundGrowing evidence indicates that improved nurse staffing in acute hospitals is associated with lower hospital mortality. Current research is limited to studies using hospital level data or without proper adjustment for confounders which makes the translation to practice difficult.MethodIn this observational study we analysed retrospectively the control group of a stepped wedge randomised controlled trial concerning 14 medical and 14 surgical wards in seven Belgian hospitals. All patients admitted to these wards during the control period were included in this study. Pregnant patients or children below 17 years of age were excluded. In all patients, we collected age, crude ward mortality, unexpected death, cardiac arrest with Cardiopulmonary Resuscitation (CPR) and unplanned admission to the Intensive Care Unit (ICU) A composite mortality measure was constructed including unexpected death and death up to 72 h after cardiac arrest with CPR or unplanned ICU admission. Every 4 months we obtained, from 30 consecutive patient admissions across all wards, the Charlson comorbidity index. The amount of nursing hours per patient days (NHPPD) were calculated every day for 15 days, once every 4 months. Data were aggregated to the ward level resulting in 68 estimates across wards and time. Linear mixed models were used since they are most appropriate in case of clustered and repeated measures data.ResultsThe unexpected death rate was 1.80 per 1000 patients. Up to 0.76 per 1000 patients died after CPR and 0.62 per 1000 patients died after unplanned admission to the ICU. The mean composite mortality was 3.18 per 1000 patients. The mean NHPPD and proportion of nurse Bachelor hours were respectively 2.48 and 0.59. We found a negative association between the nursing hours per patient day and the composite mortality rate adjusted for possible confounders (B 2.771, p 0.002) The proportion of nurse Bachelor hours was negatively correlated with the composite mortality rate in the same analysis (B 8.845, p 0.023) Using the regression equation, we calculated theoretically optimal NHPPDs.ConclusionsThis study confirms the association between higher nurse staffing levels and lower patient mortality controlled for relevant confounders.", "corpus_id": 208191197, "venue": "BMC Health Services Research", "year": 2019, "author_names": [ "Filip Haegdorens", "Peter van Bogaert", "Koen De Meester", "Koenraad G Monsieurs" ], "n_citations": 16, "n_key_citations": 0, "score": 0 }, { "doc_id": "155621111", "title": "How many nurses do we need? A review and discussion of operational research techniques applied to nurse staffing.", "abstract": "Despite a long history of health services research that indicates that having sufficient nursing staff on hospital wards is critical for patient safety, and sustained interest in nurse staffing methods, there is a lack of agreement on how to determine safe staffing levels. For an alternative viewpoint, we look to a separate body of literature that makes use of operational research techniques for planning nurse staffing. Our goal is to provide examples of the use of operational research approaches applied to nurse staffing, and to discuss what they might add to traditional methods. The paper begins with a summary of traditional approaches to nurse staffing and their limitations. We explain some key operational research techniques and how they are relevant to different nurse staffing problems, based on examples from the operational research literature. We identify three key contributions of operational research techniques to these problems: \"problem structuring\" handling complexity and numerical experimentation. We conclude that decision making about nurse staffing could be enhanced if operational research techniques were brought in to mainstream nurse staffing research. There are also opportunities for further research on a range of nurse staff planning aspects: skill mix, nursing work other than direct patient care, quantifying risks and benefits of staffing below or above a target level, and validating staffing methods in a range of hospitals.", "corpus_id": 155621111, "venue": "International journal of nursing studies", "year": 2019, "author_names": [ "Christina Saville", "Peter Griffiths", "Jane E Ball", "Thomas Monks" ], "n_citations": 24, "n_key_citations": 1, "score": 0 }, { "doc_id": "85544995", "title": "Hospital nurse staffing and staff patient interactions: an observational study", "abstract": "Background Existing evidence indicates that reducing nurse staffing and/or skill mix adversely affects care quality. Nursing shortages may lead managers to dilute nursing team skill mix, substituting assistant personnel for registered nurses (RNs) However, no previous studies have described the relationship between nurse staffing and staff patient interactions. Setting Six wards at two English National Health Service hospitals. Methods We observed 238 hours of care (n=270 patients) Staff patient interactions were rated using the Quality of Interactions Schedule. RN, healthcare assistant (HCA) and patient numbers were used to calculate patient to staff ratios. Multilevel regression models explored the association between staffing levels, skill mix and the chance of an interaction being rated as 'negative' quality, rate at which patients experienced interactions and total amount of time patients spent interacting with staff per observed hour. Results 10% of the 3076 observed interactions were rated as negative. The odds of a negative interaction increased significantly as the number of patients per RN increased (p=0.035, OR of 2.82 for =8 patients/RN compared with >6 to <8 patients/RN) A similar pattern was observed for HCA staffing but the relationship was not significant (p=0.056) When RN staffing was low, the odds of a negative interaction increased with higher HCA staffing. Rate of interactions per patient hour, but not total amount of interaction time, was related to RN and HCA staffing levels. Conclusion Low RN staffing levels are associated with changes in quality and quantity of staff patient interactions. When RN staffing is low, increases in assistant staff levels are not associated with improved quality of staff patient interactions. Beneficial effects from adding assistant staff are likely to be dependent on having sufficient RNs to supervise, limiting the scope for substitution.", "corpus_id": 85544995, "venue": "BMJ Quality Safety", "year": 2019, "author_names": [ "Jackie Bridges", "Peter Griffiths", "Emily Oliver", "Ruth Pickering" ], "n_citations": 17, "n_key_citations": 0, "score": 0 }, { "doc_id": "89619151", "title": "Determining acute nurse staffing: a hermeneutic review of an evolving science", "abstract": "Background Calculating nurse staffing in the acute hospital has become a key issue but solutions appear distant. Community, mental health and areas such as learning disability nursing have attracted less attention and remain intractable. This review aims to examine current approaches to the issue across many disciplines. Design The approach taken is iterative and in the form of a hermeneutic review. 769 pieces of evidence were reviewed from across disciplines such as nursing, medicine, engineering, statistics, population science, computer science and mathematics where hospital nurse staffing was the subject of the study. Results A number of themes emerged. The first iteration showed the predominance of unit base approaches (eg, nurse numbers, ratios, activity and workload) and the second was the development of methodologies. Subsequent iterations examined issues such as demand, safety, nurse education, turnover, patient outcomes, patient or staff satisfaction, workload and activity. The majority of studies examined (n=767) demonstrated some association between staffing (units or type/skill) and various factors such as staff or patient satisfaction, working conditions, safety parameters, outcomes complexity of work achieved, work left undone or other factors. Many potential areas such as operational safety research were not utilised. Conclusion Although the relationship between staffing in acute care and factors such as units, safety or workload is complex, the evidence suggests an interdependent relationship which should only be dismissed with caution. The nature of these relationships should be further examined in order to determine nurse staffing. The body of knowledge appears substantial and complex yet appears to have little impact on policy.", "corpus_id": 89619151, "venue": "BMJ Open", "year": 2019, "author_names": [ "Alison Leary", "Geoffrey Punshon" ], "n_citations": 11, "n_key_citations": 0, "score": 2 } ]

[ { "doc_id": "237304191", "title": "Technological Approaches to Detecting Online Disinformation and Manipulation", "abstract": "The move of propaganda and disinformation to the online environment is possible thanks to the fact that within the last decade, digital information channels radically increased in popularity as a news source. The main advantage of such media lies in the speed of information creation and dissemination. This, on the other hand, inevitably adds pressure, accelerating editorial work, fact checking, and the scrutiny of source credibility. In this chapter, an overview of computer supported approaches to detecting disinformation and manipulative techniques based on several criteria is presented. We concentrate on the technical aspects of automatic methods which support fact checking, topic identification, text style analysis, or message filtering on social media channels. Most of the techniques employ artificial intelligence and machine learning with feature extraction combining available information resources. The following text firstly specifies the tasks related to computer detection of manipulation and disinformation spreading. The second section presents concrete methods of solving the tasks of the analysis, and the third sections enlists current verification and benchmarking datasets published and used in this area for evaluation and comparison.", "corpus_id": 237304191, "venue": "", "year": 2021, "author_names": [ "Alevs Hor'ak", "Vit Baisa", "Ondvrej Herman" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "231780580", "title": "Inoculating against the spread of Islamophobic and radical Islamist disinformation", "abstract": "We report the results of a preregistered study that tested the effectiveness of inoculating participants against Islamophobic and radical Islamist disinformation. Participants in the experimental (inoculation) condition watched a video that explained common rhetorical markers of radical Islamist and Islamophobic disinformation that had been identified in an analysis of YouTube content. The information was presented in a neutral context not involving Islam and focused on analysis of the misleading argumentation. The control group watched a video about an unrelated topic. Participants were then exposed to target videos with \"gateway\" content that constituted an entry point to potential Islamist or Islamophobic radicalization. Both videos contained numerous items of disinformation. Participants then answered a variety of questions such as how likely they were to share the video, their level of agreement, and their perceived accuracy of the video. Participants who had received the inoculation displayed less agreement with the video content, perceived the video as less reliable, and were less likely to share it in comparison with participants in the control group. The study provides support for the use of argument based inoculation in combatting extremist messages.", "corpus_id": 231780580, "venue": "Cognitive research: principles and implications", "year": 2021, "author_names": [ "Muhsin Yesilada" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "236980413", "title": "Fake News, Disinformation, Propaganda, Media Bias, and Flattening the Curve of the COVID 19 Infodemic", "abstract": "The rise of social media has democratized content creation and has made it easy for anybody to share and to spread information online. On the positive side, this has given rise to citizen journalism, thus enabling much faster dissemination of information compared to what was possible with newspapers, radio, and TV. On the negative side, stripping traditional media from their gate keeping role has left the public unprotected against the spread of disinformation, which could now travel at breaking news speed over the same democratic channel. This situation gave rise to the proliferation of false information, specifically created to affect individual people's beliefs, and ultimately to influence major events such as political elections; it also set the dawn of the Post Truth Era, where appeal to emotions has become more important than the truth. More recently, with the emergence of the COVID 19 pandemic, a new blending of medical and political misinformation and disinformation has given rise to the first global infodemic. Limiting the impact of these negative developments has become a major focus for journalists, social media companies, and regulatory authorities. We offer an overview of the emerging and inter connected research areas of fact checking, misinformation, disinformation, \"fake news' propaganda, and media bias detection, with focus on text and computational approaches. We explore the general fact checking pipeline and important elements thereof such as check worthiness estimation, spotting previously fact checked claims, stance detection, source reliability estimation, detection of persuasion/propaganda techniques in text and memes, and detecting malicious users in social media. We further cover large scale pre trained language models, and the challenges and opportunities they offer for generating and for defending against neural fake news. Finally, we explore some recent efforts towards flattening the curve of the COVID 19 infodemic.", "corpus_id": 236980413, "venue": "KDD", "year": 2021, "author_names": [ "Preslav Nakov", "Giovanni Da San Martino" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "236950391", "title": "Deriving Disinformation Insights from Geolocalized Twitter Callouts", "abstract": "This paper demonstrates a two stage method for deriving insights from social media data relating to disinformation by applying a combination of geospatial classification and embedding based language modelling across multiple languages. In particular, the analysis in centered on Twitter and disinformation for three European languages: English, French and Spanish. Firstly, Twitter data is classified into European and non European sets using BERT. Secondly, Word2vec is applied to the classified texts resulting in Eurocentric, non Eurocentric and global representations of the data for the three target languages. This comparative analysis demonstrates not only the efficacy of the classification method but also highlights geographic, temporal and linguistic differences in the disinformationrelated media. Thus, the contributions of the work are threefold: (i) a novel language independent transformer based geolocation method; (ii) an analytical approach that exploits lexical specificity and word embeddings to interrogate user generated content; and (iii) a dataset of 36 million disinformation related tweets in English, French and Spanish.", "corpus_id": 236950391, "venue": "ArXiv", "year": 2021, "author_names": [ "David Tuxworth", "Dimosthenis Antypas", "Luis Espinosa Anke", "Jose Camacho-Collados", "Alun David Preece", "David Rogers" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "236950778", "title": "Is it Fake? News Disinformation Detection on South African News Websites", "abstract": "Disinformation through fake news is an ongoing problem in our society and has become easily spread through social media. The most costand time effective way to filter these large amounts of data is to use a combination of human and technical interventions to identify it. From a technical perspective, Natural Language Processing (NLP) is widely used in detecting fake news. Social media companies use NLP techniques to identify the fake news and warn their users, but fake news may still slip through undetected. It is especially a problem in more localised contexts (outside the United States of America) How do we adjust fake news detection systems to work better for local contexts such as in South Africa. In this work we investigate fake news detection on South African websites. We curate a dataset of South African fake news and then train detection models. We contrast this with using widely available fake news datasets (from mostly USA website) We also explore making the datasets more diverse by combining them and observe the differences in behaviour in writing between nations' fake news using interpretable machine learning.", "corpus_id": 236950778, "venue": "ArXiv", "year": 2021, "author_names": [ "Harm de Wet", "Vukosi Marivate" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "236476462", "title": "Novel technologies and Geopolitical Strategies: Disinformation Narratives in the Countries of the Visegrad Group", "abstract": "Abstract In the current media environment of growing information disorder and social media platforms emerging as primary news sources, the creation and spread of disinformation is becoming increasingly easy and cost effective. The projection of strategic narratives through disinformation campaigns is an important geopolitical tool in the global competition for power and status. We have analysed close to 1,000 individual news pieces from more than 60 different online sources containing disinformation, which originally appeared in one of the V4 languages, using a natural language processing algorithm. We have assessed the frequency of recurring themes within the articles and their relationship structure, to see whether consistent disinformation narratives were to be found among them. Through frequency analysis and relationship charting, we have been able to uncover individual storylines connected to more than ten overarching disinformation narratives. We have also exposed five key meta narratives present in all Visegrad Countries, which fed into a coherent system of beliefs, such as the envisioned collapse of the European Union or the establishment of a system of Neo Atlantism, which would permanently divide the continent.", "corpus_id": 236476462, "venue": "Politics in Central Europe", "year": 2021, "author_names": [ "Lilla Sarolta Bankuty-Balogh" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "236087563", "title": "Characterizing Online Engagement with Disinformation and Conspiracies in the 2020 U.S. Presidential Election", "abstract": "Identifying and characterizing disinformation in political discourse on social media is critical to ensure the integrity of elections and democratic processes around the world. Persistent manipulation of social media has resulted in increased concerns regarding the 2020 U.S. Presidential Election, due to its potential to influence individual opinions and social dynamics. In this work, we focus on the identification of distorted facts, in the form of unreliable and conspiratorial narratives in election related tweets, to characterize discourse manipulation prior to the election. We apply a detection model to separate factual from unreliable (or conspiratorial) claims analyzing a dataset of 242 million election related tweets. The identified claims are used to investigate targeted topics of disinformation, and conspiracy groups, most notably the far right QAnon conspiracy group. Further, we characterize account engagements with unreliable and conspiracy tweets, and with the QAnon conspiracy group, by political leaning and tweet types. Finally, using a regression discontinuity design, we investigate whether Twitter's actions to curb QAnon activity on the platform were effective, and how QAnon accounts adapt to Twitter's restrictions.", "corpus_id": 236087563, "venue": "ArXiv", "year": 2021, "author_names": [ "Karishma Sharma", "Emilio Ferrara" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "235396343", "title": "Book Review: Digital Democracy, Social Media and Disinformation by Petros Iosifidis and Nicholas Nicoli", "abstract": "In the spheres of political communication and digital media, there are few more pressing issues than disinformation and misinformation. The need to ensure freedom of speech and expression while also legislating against and eliminating disinformation and hateful speech has become one of democracy's most imperative tasks. This is an ideal which has recently been thrown into disarray by the conjunction of technological enhancements and politico economic actors with divisive, authoritarian agendas. Iosifidis and Nicoli's concise and timely volume is suffused by a sense of urgency at the ways in which digital disinformation is eroding democracy, trust, and informed participation, even in countries that they argue to have been historically aligned with enlightenment ideals and liberal political traditions. Nor are the only dangers to democracy from state and nonstate actors who are explicitly using the internet to spread disinformation and fake news. After mentioning the generally accepted positives of the internet for activism and democratic participation, their opening sections question what citizens choose to do online in \"selectively exposing the issues that matter to them individually rather than to society as a whole\" (p. 23) Confirmation bias and targeted psychographic profiling by firms to whom platforms have sold personal data are only the beginning when it comes to the dangers highlighted. The opening literature review situates the Habermassian public sphere as an ideal to which the authors are committed, despite the critiques that they briefly reflect on. And indeed, seen from the perspective of this ideal of political civility rational, representative, dominated by neither state nor market and working towards the public good for the greatest number through reconciliation of values and a maximization of wellbeing our current political and media systems and the debates that we find ourselves in on social media platforms seem hopelessly compromized and inadequate. The discussion of scholarship with regard to citizenship and public spheres is balanced, taking neither a techno optimist nor an overly techno pessimist view, if rather limited both by its citation of mainly well regarded European and American literature Book Review", "corpus_id": 235396343, "venue": "", "year": 2021, "author_names": [ "S Banaji" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "235683148", "title": "The Impact of Disinformation on a Controversial Debate on Social Media", "abstract": "In this work we study how pervasive is the presence of disinformation in the Italian debate around immigration on Twitter and the role of automated accounts in the diffusion of such content. By characterising the Twitter users with an Untrustworthiness score, that tells us how frequently they engage with disinformation content, we are able to see that such bad information consumption habits are not equally distributed across the users; adopting a network analysis approach, we can identify communities characterised by a very high presence of users that frequently share content from unreliable news sources. Within this context, social bots tend to inject in the network more malicious content, that often remains confined in a limited number of clusters; instead, they target reliable content in order to diversify their reach. The evidence we gather suggests that, at least in this particular case study, there is a strong interplay between social bots and users engaging with unreliable content, influencing the diffusion of the latter across the network.", "corpus_id": 235683148, "venue": "ArXiv", "year": 2021, "author_names": [ "Salvatore Vilella", "Alfonso Semeraro", "Daniela Paolotti", "Giancarlo Ruffo" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "235489870", "title": "A Comparative Study of Online Disinformation and Offline Protests", "abstract": "In early 2021 the United States Capitol in Washington was stormed during a riot and violent attack. Although the storming was merely an instance in a long sequence of events, it provided a testimony for many observers who had claimed that online actions, including the propagation of disinformation, have offline consequences. Soon after, a number of papers have been published about the relation between online disinformation and offline violence, among other related relations. Hitherto, the effects upon political protests have been unexplored. This paper thus evaluates such effects with a time series cross sectional sample of 125 countries in a period between 2000 and 2019. The results are mixed. Based on Bayesian multi level regression modeling, (i) there indeed is an effect between online disinformation and offline protests, but the effect is partially meditated by political polarization. The results are clearer in a sample of countries belonging to the European Economic Area. With this sample, (ii) offline protest counts increase from online disinformation disseminated by domestic governments, political parties, and politicians as well as by foreign governments. Furthermore, (iii) Internet shutdowns and governmental monitoring of social media tend to decrease the counts. With these results, the paper contributes to the blossoming disinformation research by modeling the impact of disinformation upon offline phenomenon. The contribution is important due to the various policy measures planned or already enacted.", "corpus_id": 235489870, "venue": "ArXiv", "year": 2021, "author_names": [ "Jukka Ruohonen" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "218943634", "title": "SKRINING FITOKIMIA DAN UJI AKTIVITAS ANTIOKSIDAN DARI EKSTRAK ETANOL BIJI KOPI ARABIKA (Coffea arabica) YANG TUMBUH DI DAERAH GAYO DENGAN METODE DPPH", "abstract": "Buah kopi termasuk buah musiman yang hanya muncul pada bulan bulan tertentu. Di daerah Gayo kopi merupakan minuman yang hampir setiap hari di konsumsi. Kopi diduga mempunyai aktivitas antioksidan sehingga mampu merendam aktivitas radikal bebas. Tujuan dari penelitian ini melakukan skrining fitokimia dan mengetahui aktivitas antioksidan dari ekstrak etanol biji kopi arabika dengan metoda 2,2 Diphenyl 2 picrylhydrazyl (DPPH) Ekstrak biji kopi arabika di buat dengan cara perkolasi dengan menggunakan pelarut etanol dan ekstrak yang diperoleh di pekatkan menggunakan rotary evaporator, selanjutnya ekstrak etanol di uji kekuatan aktifitas antioksidannya dengan menggunakan metoda 2,2 Diphenyl 2 picrylhydrazyl (DPPH) pada panjang gelombang maksimum 516 nm, sebagai kontrol positif digunakan vitamin C. Hasil skrining fitokimia menunjukkan bahwa ekstrak etanol biji kopi arabika mengandung golongan senyawa tanin, alkaloid, saponin, flavonoid, dan steroid. Hasil penelitian menunjukkan aktivitas antioksidan ekstrak etanol biji kopi arabika termasuk kategori sangat kuat dengan IC50 12,427 ppm dan vitamin C dengan IC50 0,273 ppm. Kata kunci Skrining Fitokimia, Antioksidan, Ekstrak Biji Kopi Arabika, DPPH.", "corpus_id": 218943634, "venue": "", "year": 2020, "author_names": [ "Nasirah Maulidia Ajhar", "Debi Meilani" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "202864194", "title": "Uji Aktivitas Antioksidan Infusa Biji Kopi Arabika (Coffea arabica L. Pengukuran Kadar Malondialdehid (MDA) pada Tikus Wistar (Rattus novergicus) Hiperurisemia", "abstract": "Pada keadaan hiperurisemia terjadi peningkatan jumlah radikal bebas. Salah satu indikator peningkatan radikal bebas pada manusia adalah meningkatnya kadar malondialdehid (MDA) Tujuan penelitian ini untuk menguji aktivitas infusa biji kopi arabika sebagai antioksidan dengan cara mengukur kadar MDA darah. Tikus dibagi dalam 5 kelompok kontrol (tikus normal) tikus hiperurisemia tanpa perlakuan dengan kopi, serta tiga kelompok tikus hiperurisemia yang diberi perlakuan pemberian kopi dosis yang berbeda (0,5 mg/200g berat badan (BB) 0,25 mg/200g BB; dan 0,15 mg/200g BB) Setiap kelompok terdiri dari 5 ekor tikus yang diambil darahnya pada jam ke 6 dan jam ke 21. Uji posthoc menunjukkan perbedaan yang signifikan dengan nilai p 0,05 pada jam ke 21 setelah pemberian infusa kopi arabika. Penurunan kadar MDA paling efektif pada kelompok K3, yaitu tikus hiperurisemia dengan pemberian dosis kopi 0,5 mg/200g BB. Kesimpulannya adalah infusa kopi arabika memiliki aktivitas sebagai antioksidan, dibuktikan dengan adanya penurunan kadar MDA tikus hiperurisemia pada penelitian ini. Kata kunci: hiperurisemia, kopi arabika, malondialdehid, tikus wistar.", "corpus_id": 202864194, "venue": "Jurnal Kedokteran Meditek", "year": 2019, "author_names": [ "Anna Maria Dewajanti", "Erma Mexcorry Sumbayak", "Maria Andriana Neno" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "203130575", "title": "Perbandingan Aktivitas Antioksidan Ekstrak Etanol Daun, Kulit Buah Dan Biji Kopi Arabika (Coffea Arabica L. dengan Metode Peredaman Radikal Bebas Dpph", "abstract": "Abstract. Arabica coffee Coffea arabica L. is one of the most promising natural commodities. However, the processing of coffee fruit used is only limited to coffee beans, while the coffee pulp and coffee leaves have not been used optimally. Parts of coffee generally contain the chemical compounds of polyphenols and flavonoids which have antioxidant activity. This study aimed to compare the antioxidant activities of ethanol extracts of leaves, pulp and arabica coffee beans. Extraction was conducted by maceration using ethanol 96% The antioxidant activity was tested using the DPPH free radical scavenging method (2,2 diphenyl 1 picrylhydrazyl) using a UV Vis spectrophotometer with vitamin C as a comparison. Based on IC 50 the antioxidant activity of coffee leaves ethanol extract (35.2379 ppm) was higher than coffee bean extract (57.4484 ppm) and coffee pulp extract (IC50 175.4638 ppm) From the intensity of antioxidant strength, coffee leaves extract had a very strong antioxidant intensity <50 ppm) followed by the intensity of coffee beans which was strong (50 100 ppm) and the coffee pulp extract was in moderate intensity (101 250 ppm) It can be concluded that parts of Arabica coffee which have the highest antioxidant activity are leaves, seeds and fruit peels. Keywords: Leaves, Pulp, Beans, Arabica coffee, Antioxidants Abstrak. Kopi arabika Coffea arabica L. merupakan salah satu komoditi bahan alam yang sangat menjanjikan. Namun, pada proses pengolahan buah kopi yang digunakan hanyalah sebatas biji kopi, sedangkan kulit buah dan daun kopi belum digunakan secara maksimal. Bagian bagian dari kopi secara umum memiliki kandungan senyawa kimia polifenol dan flavonoid yang memiliki aktivitas antioksidan. Penelitian ini bertujuan untuk membandingkan aktivitas antioksidan ekstrak etanol daun, kulit buah dan biji kopi arabika. Ekstraksi dilakukan menggunakan metode maserasi dengan pelarut etanol 96% Uji aktivitas antioksidan dilakukan dengan metode peredaman radikal bebas DPPH (2,2 difenil 1 pikrilhidrazil) menggunakan spektrofotometer UV Vis dengan vitamin C sebagai pembanding. Berdasarkan nilai IC 50 aktivitas antioksidan ekstrak etanol daun kopi (35,2379 ppm) lebih tinggi daripada ekstrak biji kopi (57,4484 ppm) dan ekstrak kulit buah kopi (IC 50 175,4638 ppm) Dilihat dari intensitas kekuatan antioksidan, ekstrak daun kopi memiliki intensitas antioksidan sangat kuat 50 ppm) diikuti oleh intensitas biji kopi yaitu kuat (50 100 ppm) dan kulit buah kopi intensitasnya sedang (101 250 ppm) Dapat disimpulkan bagian kopi arabika yang memiliki aktivitas antioksidan dari yang paling tinggi yaitu daun, biji dan kulit buah. Kata kunci: Daun, Kulit buah, Biji, Kopi arabika, Antioksidan", "corpus_id": 203130575, "venue": "", "year": 2019, "author_names": [ "Syiffa Octariyani Sasmita", "Leni Purwanti", "Esti Rachmawati Sadiyah" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "229598831", "title": "UJI AKTIVITAS ANTIOKSIDAN CAMPURAN KOPI ARABIKA (COFFEA ARABIKA) DAN EKSTRAK KULIT BUAH ALPUKAT (PERSEA AMERICANA. MILL)", "abstract": "ABSTRAK Yulia, Nanda. 2015. Uji Aktivitas Antioksidan Campuran Kopi Arabika (Coffea arabica) dan Kulit Buah Alpukat (Persea americana Mill) Skripsi, Jurusan Pendidikan Kimia, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Syiah Kuala. Pembimbing: (1) Dr. Abdul Gani, M.Si. (2) Muhammad Nazar, S.Pd, MSCST. Kata kunci Kulit alpukat (Persea americana Mill) kopi arabika (Coffea arabica) antioksidan, IC50 Telah dilakukan penelitian terhadap campuran kopi arabika (Coffea arabica) dan kulit buah alpukat (Persea americana Mill) Penelitian ini bertujuan untuk untuk menguji aktivitas antioksidan campuran biji kopi dan kulit buah alpukat yang disangrai bersama dan campuran serbuk biji kopi dan kulit buah alpukat. Sampel kulit buah alpukat diperoleh dari pedagang jus kaki lima di kawasan Lampineung, Banda Aceh dan sampel biji kopi arabika yang digunakan diperoleh dari petani kopi di Pantan Cuaca, Gayo Lues Kulit buah alpukat dikeringkan dengan metode kering angin untuk menjaga senyawa metabolit sekunder yang ada didalamnya, kemudian dibagi menjadi 2 bagian yaitu kulit buah alpukat kasar dan serbuk kulit buah alpukat. Biji kopi mentah dibagi menjadi 2 bagian pula, untuk disangrai bersamaan dengan kulit buah alpukat dan biji kopi murni tanpa campuran. Sampel diekstrak dengan metode maserasi selama 48 jam menggunakan pelarut etanol 96% kemudian diuapkan dengan rotary evaporator untuk mendapatkan ekstrak kental dari sampel. Pengujian aktivitas antioksidan menggunakan DPPH (1,1 diphenyl 2 picrylhydrazyl) dengan konsentrasi sampel 2 ppm, 4 ppm, 6 ppm, 8 ppm, dan 10 ppm. Hasil uji pada sampel biji kopi dan kulit alpukat yang disangrai bersamaan memiliki tingkat aktivitas antioksidan sangat kuat senilai 4,92 ppm dibandingkan dengan campuran serbuk kulit buah alpukat dan sebuk biji kopi senilai 5,83 ppm.", "corpus_id": 229598831, "venue": "", "year": 2020, "author_names": [ "Nanda Yulia" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "194917630", "title": "ANALISIS KANDUNGAN FENOL DAN AKTIVITAS ANTIOKSIDAN KOPI BIJI TANPA SANGRAI DENGAN PERLAKUAN LAMA TUNDA PULPING PADA BEBERAPA VARIETAS KOPI ARABIKA GAYO", "abstract": "RINGKASAN Kopi Gayo adalah salah satu diantara komoditi ekspor unggulan Indonesia yang telah dikenal di pasar domestik maupun internasional. Kopi biji diketahui mengandung polifenol yang merupakan senyawa flavonoid yang dikatagorikan sebagai salah sat u antioksidan kuat, terutama asam klorogenat (Cholorogenic acid) yang merupakan salah satu antioksidan yang diketahui mampu melawan p enyakit. Sementara itu, akhir akhir ini telah banyak berkembang produk minuman ekstrak kopi hijau tanpa sangrai yang mendapat banyak perhatian di Negara Barat. Hal ini, kemungkinan terkait dengan informasi tentang kandungan antioksidan yang tinggi tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh varietas dan lama tunda pulping terhadap kandungan fenol dan antioksidan pada kopi biji tanpa sangrai sebagai minuman fungsional. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK faktorial) dengan 2 faktor. F aktor pertama yaitu varietas kopi (V) dengan 3 taraf yaitu Tim Tim (V1) borbor (V2) Ateng Super (V3) Faktor kedua yaitu lama tunda pulping (P) dengan 2 taraf yaitu 1 hari (P1) dan 2 hari (P2) Setiap perlakuan diulang sebanyak 3 kali ulangan sehingga diperoleh 18 satuan percobaan. Analisis yang dilakukan terhadap seduhan kopi biji meliputi analisis kadar total fenol metode folin ciocalteu (FC) dan uji aktivitas antioksidan metode DPPH, dari hasil analisis tersebut ditentukan perlakuan terbaik untuk selanjutnya dilakukan analisis IC 50 Hasil sidik ragam menunjukkan bahwa varietas (V) berpengaruh sangat nyata (P<=0.01) terhadap kandungan total fenol seduhan kopi biji arabika Gayo Sedangkan perlakuan lama tunda pulping berpengaruh tidak nyata (P>0.05) terhadap kandungan total fenol. Interaksi antara keduanya berpengaruh tidak nyata terhdap kandungan total fenol (P>0.05) Uji BNT0.05 menunjukkan bahwa total fenol tertinggi diperoleh pada perlakuan biji kopi arabika varietas timtim yaitu 509,85 mg GAE/ml yang berbeda sangat nyata dengan seluruh varietas biji kopi arabika yaitu varietas kopi borbor yaitu 456,64 mg GAE/ml dan varietas kopi Ateng Super yaitu 401,59 mg GAE/ml. Hal ini menunjukkan bahwa total fenol bergantung pada spesies dan varietas dari kopi tersebut. Hasil sidik ragam aktivitas antioksidan dengan menggunakan metode DPPH menunjukkan bahwa varietas kopi (V) dan perlakuan lama tunda pulping (P) berpengaruh sangat nyata (P<=0.01) terhadap nilai aktivitas antioksidan seduhan kopi biji arabik a Gayo, sedangkan interaksi antara kedua perlakuan berpengaruh tidak nyata (P>0.05) terhadap nilai aktivitas antioksidan. Uji BNT 0.05 menunjukkan bahwa nilai aktivitas antioksidan seduhan kopi biji arabika Gayo dengan perlakuan lama tunda pulping 1 hari berbeda nyata dengan perlakuan lama tunda pulping 2 hari. Perlakuan terbaik dipilih dari analisis total fenol dan aktivitas antioksidan seduhan kopi biji arabika Gayo dari varietas Tim Tim dan varietas Ateng Super dengan penundaan pulping 1 hari. Seduhan kopi biji arabika Gayo varietas Tim Tim dengan penundaan pulping 1 hari memiliki nilai IC 50 12,22 ppm dan varietas Ateng Super dengan penundaan pulping 1 hari memiliki nilai IC 50 21,48 ppm yang tergolong kedalam kategori aktivitas antioksidan sangat kuat berdasarkan klasifikasi Sinaga (2009)", "corpus_id": 194917630, "venue": "", "year": 2017, "author_names": [ "Shiti Dhella Errianda" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "202932638", "title": "Karakteristik Atribut Sensori dan Sifat Fisikokimia Ekstrak Green Bean, Roasted Bean dan Cascara Kopi Arabika (Coffea Arabica)", "abstract": "Kopi merupakan salah satu hasil komoditi perkebunan yang memiliki nilai ekonomis yang cukup tinggi. Biji kopi Arabika dikenal sebagai salah satu jenis kopi yang memiliki cita rasa seduhan yang unik karena komponen bioaktif yang terkandung di dalamnya. Penelitian ini bertujuan untuk mengetahui karakteristik atribut sensori dan sifat fisiko kimia dari ekstrak green bean, roasted bean dan cascara dari jenis kopi Arabika. Penelitian ini terbagi menjadi dua tahap, uji sensori dan analisis sifat fisikokimia. Metode analisis atribut sensori menggunakan uji deskriptif, sedangkan sifat fisiko kimia dilakukan pengukuran nilai keasaman menggunakan pH meter, total dissolve solid menggunakan TDS meter, derajat Brix menggunakan refraktometer, total senyawa fenolik menggunakan metode Folin Ciocalteu dan aktivitas antioksidan menggunakan metode DPPH. Hasil uji sensori menunjukkan bahwa sampel green bean dengan karakteristik hijau, tidak asam, pahit dengan aroma kekayuan. Sampel roasted bean memiliki karakteristik pahit, asam, dengan mouthfeel yang ringan. Sampel cascara dengan karakteristik seperti lemon dengan warna seperti teh melati dan aroma seperti madu. Total senyawa fenolik untuk sampel roasted bean, green bean dan cascara sebesar 220,68+ 33,34 4,33+ 0,54 dan 413,49+ 20,37 mg GAE/mL. Nilai aktivitas antioksidan untuk sampel roasted bean, green bean dan cascara sebesar 925,44+ 2,62 787,82+ 106,70 dan 861,16+ 38,92 ppm. Hasil pengujian sifat fisikokimia saling berhubungan dengan atribut sensori pada masing masing sampel.", "corpus_id": 202932638, "venue": "", "year": 2019, "author_names": [ "Vina Aulia Rahmawati" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197510204", "title": "PENGARUH PENCAMPURAN KOPI ARABIKA DAN KOPI LIBERIKA TERHADAP AKTIVITAS ANTIOKSIDAN SERTA UJI SENSORIK KOPI BUBUK CAMPURAN", "abstract": "Penelitian ini bertujuan mengetahui pengaruh pencampuran biji kopi arabika dan biji kopi liberika terhadap aktivitas antioksidan dan uji sensorik bubuk kopi campuran yang dihasilkan serta mengetahui tingkat kesukaan panelis terhadap kopi bubuk campuran dengan berbagai perbandingan yang ditentukan. Penelitian ini menggunakan Rancangan Acak lengkap (RAL) dengan 6 perlakuan dan 3 ulangan. Analisa data dilakukan menggunakan Analisis of Variance (ANOVA) dan kemudian dilanjutkan dengan Duncan's New Multiple Range Test (DNMRT) pada taraf nyata 5% Perbandingan pencampuran kopi liberika dengan kopi arabika 100 0, 90 10, 80 20, 70 30, 60 40, 50 50 dalam total bahan sebanyak 40 gram. Hasil penelitian menunjukkan bahwa perbandingan pencampuran kopi liberika dengan kopi arabika terhadap kopi bubuk campuran memberikan pengaruh berbeda nyata terhadap kadar air, kadar abu, kadar lemak, aktivitas antioksidan, total fenol, pH, dan kafein, namun memberikan pengaruh berbeda tidak nyata pada kadar sari kopi. Produk yang mendapatkan nilai tertinggi berdasarkan uji cita rasa adalah perlakuan F (50 50) dengan total skor 81,5. Kata kunci kopi liberika, kopi arabika, antioksidan, uji sensorik.", "corpus_id": 197510204, "venue": "", "year": 2018, "author_names": [ "Saputra Imam" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "90201972", "title": "UJI AKTIVITAS NEMATISIDA EKSTRAK AIR BIJI SIRSAK (Annona muricata L. TERHADAP NEMATODA Pratylenchus coffeae PADA AKAR TANAMAN KOPI ARABIKA (Coffea arabica L.", "abstract": "", "corpus_id": 90201972, "venue": "", "year": 2014, "author_names": [ "Winda Ari Anggraini" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "114478572", "title": "Uji Daya Antibakteri Ekstrak Etanol Biji Kopi Arabika (Coffea arabica) Terhadap Streptococcus mutans Penyebab Karies Gigi", "abstract": "Indonesia adalah negara tropis yang memiliki banyak tanaman berkhasiat obat, salah satunya tanaman kopi (Coffea) Biji kopi mengandung sejumlah senyawa kimia yang mengandung zat non nutrien seperti caffeine, theobromine, theophylline, caffeic acid, chlorogenic acid, trigonelline, dan protocatechnic acid yang telah diteliti para ahli memiliki efek antibakteri. Tujuan penelitian ini adalah untuk mengetahui aktivitas antibakteri ekstrak etanol biji kopi terhadap Streptococcus mutans. Penelitian ini menggunakan Rancangan Acak Lengkap yang terdiri dari 5 kelompok perlakuan dan 2 kelompok kontrol dengan 5 kali pengulangan. Kelompok perlakuan terdiri dari ekstrak etanol biji kopi Arabika konsentrasi 12,5% 25% 50% 75% dan 100% Kelompok kontrol menggunakan cakram antibiotik ampicillin 10 ug sebagai kontrol positif dan cakram aquades sebagai kontrol negatif. Uji aktivitas antibakteri menggunakan metode difusi cakram. Ekstrak etanol biji kopi Arabika konsentrasi 12,5% 25% 50% 75% dan 100% dapat menghambat pertumbuhan Streptococcus mutans dengan zona hambat rata rata berturut turut adalah 6,88 mm, 7,72 mm, 8,85 mm, 10,28 mm dan 10,84 mm. Kontrol positif dan negatif memberi zona hambat rata rata 0,00 mm dan 21,00 mm. Hasil analisis data menunjukkan bahwa ekstrak etanol biji kopi Arabika dapat menghambat pertumbuhan Streptococcus mutans. Konsentrasi 75% adalah konsentrasi yang paling efektif namun dengan kategori daya hambat lemah. Semakin tinggi konsentrasi ekstrak etanol biji kopi Arabika, semakin luas zona hambat pertumbuhan Streptococcus mutans yang terbentuk. Kata kunci: biji kopi, aktivitas antibakteri, Streptococcus mutans", "corpus_id": 114478572, "venue": "", "year": 2013, "author_names": [ "M Afrillyan Dwi Syahputra" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "104290391", "title": "FORMULASI SEDIAAN MASKER GEL PEEL OFF ANTIOKSIDAN EKSTRAK BIJI KOPI HIJAU ARABIKA(Coffea arabica L. DAN UJI SIFAT FISIKNYA", "abstract": "Paparan sinar UV yang berlebihan akan memicu pembentukan radikal bebas yang dapat menyebabkan perusakan pada kulit. Senyawa antioksidan da pat mengurangi efek buruk radikal bebas terhadap kulit. Ekstrak etanol biji kopi hijau arabika Coffea arabica L. banyak mengandung senyawa antioksidan seperti asam kloronenik, asam ferulat, asam kafeat, asam n kumarat, kafein trigenolina dan antioksidan volatil berupa furan dan pirol. Hasil penelitian menunjukkan bahwa ekstrak etanol biji kopi hijau arabika memiliki aktivitas penangkapan radikal bebas terhadap DPPH 1,1 difenil 2 pikrilhidrazil yang dinyatakan dalam IC 50 yaitu sebesar 9,8554 ppm Penelit ian ini bertujuan untuk mengetahui aktivitas penangkapan radikal bebas terhadap DPPH dan sifat fisik dari masker gel peel off antioksidan ekstrak etanol biji kopi hijau arabika Pengujian aktivitas antioksidan dilakukan dengan metode DPPH. Biji kopi hijau arabika diekstraksi dengan menggunakn pelarut etanol 70% dengan metode sokhletasi. Ekstrak etanol biji kopi hijau tersebut kemudian diformulasikan ke dalam masker gel peel off dengan konsentrasi ekstrak 1, 2 dan 3% Hasil penelitian menunjukkan bahwa maske r gel peel off ekstrak etanol biji kopi hijau arabika dengan konsentrasi ekstrak 1, 2 dan 3% memiliki nilai IC 50 24,71; 19,07 dan 15,55 ppm dan tergolong dalam antioksidan yang sangat kuat", "corpus_id": 104290391, "venue": "", "year": 2017, "author_names": [ "Atia Askarima" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "214315853", "title": "Medicago truncatula as a model to study powdery mildew resistance", "abstract": "", "corpus_id": 214315853, "venue": "", "year": 2019, "author_names": [ "Nicolas Rispail", "Elena Prats", "Diego Rubiales" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "133605512", "title": "Nodulation induces systemic resistance of Medicago truncatula and Pisum sativum against Erysiphe pisi and primes for powdery mildew triggered salicylic acid accumulation.", "abstract": "Plants encounter beneficial and detrimental microorganisms both above and below ground and the health status of the plant depends on the composition of this pan microbiome. Beneficial microorganisms contribute to plant nutrition and/or systemically or locally protect plants against pathogens, thus facilitating adaptation to a variety of environments. Induced systemic resistance, caused by root associated microbes, manifests as above ground resistance against necrotrophic pathogens and is mediated by jasmonic acid/ethylene signaling. By contrast, systemic acquired resistance relies on salicylic acid (SA) and confers resistance against secondary infection by (hemi)biotrophic pathogens. To investigate whether symbiotic rhizobia that are ubiquitously found in natural ecosystems are able to modulate resistance against biotrophs, we tested the impact of pre established nodulation of Medicago truncatula and pea (Pisum sativum) plants against infection by the powdery mildew fungus Erysiphe pisi. We found that root symbiosis interfered with fungal penetration of M. truncatula and reduced asexual spore formation on pea leaves independently of symbiotic nitrogen fixation. Improved resistance of nodulated plants correlated with elevated levels of free SA and SA dependent marker gene expression upon powdery mildew infection. Our results suggest that nodulation primes the plants systemically for E. pisi triggered SA accumulation and defense gene expression, resulting in increased resistance.", "corpus_id": 133605512, "venue": "Molecular plant microbe interactions MPMI", "year": 2019, "author_names": [ "Lara Smigielski", "Eva-Maria Laubach", "Lina Pesch", "Joanna Marie Leyva Glock", "Frank Albrecht", "Alan John Slusarenko", "Ralph Panstruga", "Hannah Kuhn" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "209385518", "title": "Dual RNA Seq analysis of Medicago truncatula and the pea powdery mildew Erysiphe pisi uncovers distinct host transcriptional signatures during incompatible and compatible interactions and pathogen effector candidates.", "abstract": "Powdery mildew (PM) is a serious fungal disease of legumes. To gain novel insights into PM pathogenesis and host resistance/susceptibility, we used dual RNA Seq to simultaneously capture host and pathogen transcriptomes at 1 d post inoculation of resistant and susceptible Medicago truncatula genotypes with the PM Erysiphe pisi (Ep) Differential expression analysis indicates that R gene mediated resistance against Ep involves extensive transcriptional reprogramming. Functional enrichment of differentially expressed host genes and in silico analysis of co regulated promoters suggests that amplification of PTI, activation of the JA/ET signaling network, and regulation of growth defense balance correlate with resistance. In contrast, processes that favor biotrophy, including suppression of defense signaling and programmed cell death, and weaker cell wall defenses are important susceptibility factors. Lastly, Ep effector candidates and genes with known/putative virulence functions were identified, representing a valuable resource that can be leveraged to improve our understanding of legume PM interactions.", "corpus_id": 209385518, "venue": "Genomics", "year": 2019, "author_names": [ "Megha Gupta", "Gunjan Sharma", "Divya Saxena", "Roli Budhwar", "Madavan Vasudevan", "Varsha Gupta", "Arunima Gupta", "Rashi Gupta", "Divya Chandran" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "231900484", "title": "The Medicago truncatula Sugar Transport Protein 13 and its Lr67res like Variant Confer Powdery Mildew Resistance in Legumes via Defense Modulation.", "abstract": "Obligate biotrophic pathogens like the pea powdery mildew (PM) Erysiphe pisi establish long term feeding relationships with their host, during which they siphon sugars from host cells through haustoria. Plants in turn deploy sugar transporters to restrict carbon allocation towards pathogens, as a defense mechanism. Studies in Arabidopsis have shown that sugar transport protein 13 (STP13) a proton hexose symporter involved in apoplasmic hexose retrieval, contributes to bacterial and necrotrophic fungal resistance by limiting sugar flux towards these pathogens. By contrast, expression of Lr67res, a transport deficient wheat STP13 variant harboring two amino acid substitutions (G144R and V387L) conferred resistance against biotrophic fungi in wheat and barley, indicating its broad applicability in disease management. Here we investigated the role of STP13 and STP13G144Rin legume PM interactions. We show that Medicago truncatula STP13.1 is a proton hexose symporter involved in basal resistance against PM, and indirectly show that Lr67res mediated PM resistance, so far reported only in monocots, is transferable to legumes. Among the 30 MtSTPs, STP13.1 exhibited the highest fold induction in PM challenged leaves, and was also responsive to chitosan, ABA and sugar treatment. Functional assays in yeast showed that introduction of the G144R mutation but not V388L abolished MtSTP13.1's hexose uptake ability. Virus induced gene silencing of MtSTP13 repressed PR gene expression and enhanced PM susceptibility in M. truncatula whereas transient overexpression of MtSTP13.1 or MtSTP13.1G144R in pea induced PR and isoflavonoid pathway genes and enhanced PM resistance. We propose a model in which STP13.1 mediated sugar signaling triggers defense responses against PM in legumes.", "corpus_id": 231900484, "venue": "Plant cell physiology", "year": 2021, "author_names": [ "Megha Gupta", "Shubham Dubey", "Deepti Jain", "Divya Chandran" ], "n_citations": 1, "n_key_citations": 1, "score": 1 }, { "doc_id": "205215702", "title": "Epigenetic regulation of a powdery mildew resistance gene in Medicago truncatula.", "abstract": "Dear Editor, Medicago truncatula is a model legume that is congeneric with alfalfa (Medicago sativa) a forage crop of global importance. Over the last decade, tremendous genetic and genomic tools have been developed for this model system, which has greatly facilitated the study of various aspects of legume genomics and biology. From an applied perspective, genomic information gained from M. truncatula is particularly useful for genetic improvement of cultivated alfalfa, a crop that is not amenable to genetic analysis because of its allogamous and autotetraploid nature (Yang et al. 2008) For instance, M. truncatula can be used to clone the orthologs of many economically important genes in alfalfa, because the two species share many common phenotypes. Owing to the high level of sequence homology and remarkably conserved gene function between the two species, the isolated genes from M. truncatula can be directly used for alfalfa improvement by transgenic approaches. We used M. truncatula as a model system to identify genes that confer resistance to powdery mildew caused by the biotrophic fungus Erysiphe pisi. For this purpose, the resistant genotype Jemalong A17 and the susceptible genotype F83005.5 were crossed to produce an F2 mapping population. The F2 plants were inoculated with an Erysiphe pisi race (we called race 1) originally obtained from naturally occurring infection on the leaves of F83005.5. Seven to 10 d after inoculation, the resistant plants grew normally and were symptomless, while the susceptible plants displayed typical powdery mildew symptoms presented by white patches of mycelium and conidia covering the leaf surface (Figure 1A) Phenotyping of 1107 F2 plants identified 822 resistant and 285 susceptible individuals. The segregation of resistance to susceptibility fits 3:1 ratio (kh2 0.31, df 1, P 0.58) indicating that a single dominant gene controls the powdery mildew resistance in Jemalong A17. This resistance gene was designated as MtREP1 (for resistance to Erysiphe pisi race 1) We used the susceptible F2 individuals for genetic mapping of the MtREP1 locus. Initial genotyping using simple sequence repeat (SSR) markers revealed that the MtREP1 locus is located between markers MtB330 and MtB38 on the M. truncatula chromosome 5 (Figure 1A) a position coincident with one of the two QTL loci that confer powdery mildew resistance against an E. pisi isolate from alfalfa (Ameline Torregrosa et al. 2008) The availability of genomic sequence around this region allowed us to develop sequencebased CAPS (cleaved amplified polymorphic sequences) markers to finely map the locus. Through this process, we were able to delimit the MtREP1 locus between CAP52 and CAP23 that span ~194 kb, within which CAP8, CAP9, CAP20, and CAP22 were co segregated with MtREP1 (Figure 1A) The 194 kb window contains more than 30 annotated genes (Medtr5g072060 Medtr5g072480) three of which encode a typical coiled coil/nucleotide binding site/leucinerich repeat (CC NBS LRR) plant R protein (Medtr5g072140, Medtr5g072250, and Medtr5g072340) (Young et al. 2011; version Mt3.5) These three CC NBS LRR genes were considered as candidates of MtREP1. We identified a single bacterial artificial chromosome (BAC) clone mth2 76g24 that contains all three candidate genes, from which genomic sequences for each candidate gene, including their native promoters and 3' untranslated (UTR) regions, were obtained and cloned into the pCAMBIA2300 vector. Because M. truncatula is recalcitrant to efficient Agrobacterium tumefaciens mediated transformation, we chose to use alfalfa as an alternative study system. For this purpose, we first screened the alfalfa cultivar Pioneer 53V08 to identify plants that were susceptible to the E. pisi race 1. The selected susceptible plants were then subjected to A. tumefaciens mediated transformation using the genomic constructs described above. We obtained transgenic plants for each candidate gene, all of which were inoculated with the powdery mildew pathogen. Our results showed that independent transgenic plants containing Medtr5g072140 (n 23) Medtr5g072250 (n 11) or the empty vector pCAMBIA2300 (n 19) were all susceptible. In contrast, independent transformants containing the Medtr5g072340 transgene (n 15) were completely resistant to the pathogen (Figure 1B) Thus, we conclude that Medtr5g072340 is the MtREP1 gene. Alignment of genomic and cDNA sequences reveals that MtREP1 coding sequence is composed of a single exon that is predicted to encode a protein of 992 amino acids, consisting of an N terminal CC domain, a centrally located NBS domain, and numerous degenerate LRRs C terminal to the NBS domain. 3' RACE (rapid amplification of cDNA ends) analysis identified 1486 bp transcribed sequence after the stop codon. Sequence alignment of the 1486 bp cDNA sequence with genomic DNA", "corpus_id": 205215702, "venue": "Molecular plant", "year": 2013, "author_names": [ "Shengming Yang", "Fang Tang", "Eveline Teixeira Caixeta", "Hongyan Zhu" ], "n_citations": 14, "n_key_citations": 1, "score": 0 }, { "doc_id": "3389429", "title": "Mining the Cicer arietinum genome for the mildew locus O (Mlo) gene family and comparative evolutionary analysis of the Mlo genes from Medicago truncatula and some other plant species", "abstract": "The mildew locus O (Mlo) gene family is ubiquitous in land plants. Some members of this gene family are involved in negative regulation of powdery mildew resistance, while others are involved in several other biological functions. Mlo proteins have characteristic seven transmembrane domains and a calmodulin binding domain at their C termini, and are associated with plasma membrane. The Mlo gene family has been studied in several economically important cereals, but little information is available on this gene family in the important legumes, Medicago truncatula Gaertn. and Cicer arietinum L. We carried out a comprehensive and comparative investigation of the Mlo gene family in these two species using the genome sequences available at the M. truncatula genome database (Mt v4.0) and NCBI (C. arietinum) A genome wide homology based search using Arabidopsis Mlo proteins as query identified 16 MtMlo (M. truncatula Mlo) and 14 CarMlo (C. arietinum Mlo) genes. The MtMlo and CarMlo genes had comparable gene structure, protein sequence and topology. Their chromosomal locations indicated the occurrence of extensive reorganization in the genomes of the two species after their divergence from the common ancestor. A multiple sequence alignment of 53 Mlo proteins from these two and several other species showed a highly conserved sequence block of seven amino acids, viz. L ETPTW, towards their N termini. The evolutionary phylogenetic analysis grouped the MtMlo and CarMlo members into four clusters, and most of the MtMlo and CarMlo members formed one to one ortholog pairs. The ka/ks analyses indicated that the MtMlo and CarMlo genes are subjected to intense purifying selection.", "corpus_id": 3389429, "venue": "Journal of Plant Research", "year": 2016, "author_names": [ "Reena Deshmukh", "V K Singh", "Brahma Deo Singh" ], "n_citations": 11, "n_key_citations": 1, "score": 1 }, { "doc_id": "15234038", "title": "Genetic dissection of resistance to anthracnose and powdery mildew in Medicago truncatula.", "abstract": "Medicago truncatula was used to characterize resistance to anthracnose and powdery mildew caused by Colletotrichum trifolii and Erysiphe pisi, respectively. Two isolates of E. pisi (Ep p from pea and Ep a from alfalfa) and two races of C. trifolii (races 1 and 2) were used in this study. The A17 genotype was resistant and displayed a hypersensitive response after inoculation with either pathogen, while lines F83005.5 and DZA315.16 were susceptible to anthracnose and powdery mildew, respectively. To identify the genetic determinants underlying resistance in A17, two F7 recombinant inbred line (RIL) populations, LR4 (A17 x DZA315.16) and LR5 (A17 x F83005.5) were phenotyped with E. pisi isolates and C. trifolii races, respectively. Genetic analyses showed that i) resistance to anthracnose is governed mainly by a single major locus to both races, named Ct1 and located on the upper part of chromosome 4; and ii) resistance to powdery mildew involves three distinct loci, Epp1 on chromosome 4 and Epa1 and Epa2 on chromosome 5. The use of a consensus genetic map for the two RIL populations revealed that Ct1 and Epp1, although located in the same genome region, were clearly distinct. In silico analysis in this region identified the presence of several clusters of nucleotide binding site leucine rich repeat genes. Many of these genes have atypical resistance gene analog structures and display differential expression patterns in distinct stress related cDNA libraries.", "corpus_id": 15234038, "venue": "Molecular plant microbe interactions MPMI", "year": 2008, "author_names": [ "Carine Ameline-Torregrosa", "Marc Cazaux", "Dariush Danesh", "Fabien Chardon", "Steven B Cannon", "Marie-Therese Esquerre-Tugaye", "Bernard Dumas", "Nevin D Young", "Deborah A Samac", "Thierry Huguet", "Christophe Jacquet" ], "n_citations": 53, "n_key_citations": 3, "score": 0 }, { "doc_id": "17284797", "title": "Transcriptional profiling of Medicago truncatula during Erysiphe pisi infection", "abstract": "Resistance to powdery mildew has been studied in a number of plant species, yet the molecular mechanisms remain largely unknown. Transcription factors (TFs) play a critical role in the plant defense response by regulating the transcriptional machinery which coordinates the expression of a large group of genes involved in plant defense. Using high throughput quantitative real time PCR (qPCR) technology more than 1000 Medicago truncatula TFs were screened in a pair of susceptible and resistant genotypes of M. truncatula after 4 h of Erysiphe pisi infection. Seventy nine TF genes, belonging to 33 families showed a significant transcriptional change in response to E. pisi infection. Forty eight TF genes were differentially expressed in the resistant genotypes compared to the susceptible one in response to E. pisi infection, including pathogenesis related transcriptional factors, AP2/EREBP (APETALA2/ETHYLENE RESPONSIVE ELEMENT BINDING FACTORS) WRKY (highly conserved WRKYGQK amino acid sequence) MYB (Myeloblastoma) homeodomain (HD) and zinc finger C2C2 (CYS2 CYS2) C2H2, (CYS2 HIS2) LIM (Lin 11, Isl 1, Mec 3) gene families, which are involved in known defense responses. Our results suggest that these TF genes are among the E. pisi responsive genes in resistant M. truncatula that may constitute a regulatory network which controls the transcriptional changes in defense genes involved in resistance to E. pisi.", "corpus_id": 17284797, "venue": "Front. Plant Sci.", "year": 2015, "author_names": [ "Miguel Curto", "Franziska Krajinski", "Armin Schlereth", "Diego Rubiales" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "18194993", "title": "Plant Defense Responses in Medicago truncatula Unveiled by Microarray Analysis", "abstract": "Plant defense responses are made up of broad plant defense mechanisms that involve an integrated signaling pathway. Powdery mildew caused by Erysiphe pisi is one of the most important diseases of pea. However, the mechanisms and pathways involved in the resistance against E. pisi are yet undiscovered. We studied the transcriptome of two Medicago truncatula genotypes, the powdery mildew susceptible commercial variety Parabinga and the resistant accession SA1306, at 4 and 12 h after E. pisi infection, using Mt16kOLI1 microarrays. Four hundred and forty six probes were differentially expressed between the two M. truncatula genotypes along the time points studied. RNA accumulation patterns suggest that the most prominent responses to pathogen infection occur at early infection stages. Most of the regulated genes are related to cell wall reinforcement, flavonoid, and phenylpropanoid biosynthesis. In addition, pathogenesis related proteins and signaling pathways controlled by jasmonic acid and salicylic acid were found to be regulated during pathogen infection. This study provides the first comprehensive view of the genes and pathways activated in the E. pisi/M. truncatula pathosystem, allowing the identification of targets against this important disease.", "corpus_id": 18194993, "venue": "Plant Molecular Biology Reporter", "year": 2014, "author_names": [ "Miguel Curto", "Franziska Krajinski", "Helge Kuster", "Diego Rubiales" ], "n_citations": 8, "n_key_citations": 1, "score": 0 }, { "doc_id": "31251512", "title": "Durable broad spectrum powdery mildew resistance in pea er1 plants is conferred by natural loss of function mutations in PsMLO1.", "abstract": "Loss of function alleles of plant specific MLO (Mildew Resistance Locus O) genes confer broad spectrum powdery mildew resistance in monocot (barley) and dicot (Arabidopsis thaliana, tomato) plants. Recessively inherited powdery mildew resistance in pea (Pisum sativum) er1 plants is, in many aspects, reminiscent of mlo conditioned powdery mildew immunity, yet the underlying gene has remained elusive to date. We used a polymerase chain reaction (PCR) based approach to amplify a candidate MLO cDNA from wild type (Er1) pea. Sequence analysis of the PsMLO1 candidate gene in two natural er1 accessions from Asia and two er1 containing pea cultivars with a New World origin revealed, in each case, detrimental nucleotide polymorphisms in PsMLO1, suggesting that PsMLO1 is Er1. We corroborated this hypothesis by restoration of susceptibility on transient expression of PsMLO1 in the leaves of two resistant er1 accessions. Orthologous legume MLO genes from Medicago truncatula and Lotus japonicus likewise complemented the er1 phenotype. All tested er1 genotypes showed unaltered colonization with the arbuscular mycorrhizal fungus, Glomus intraradices, and with nitrogen fixing rhizobial bacteria. Our data demonstrate that PsMLO1 is Er1 and that the loss of PsMLO1 function conditions durable broad spectrum powdery mildew resistance in pea.", "corpus_id": 31251512, "venue": "Molecular plant pathology", "year": 2011, "author_names": [ "Matt Humphry", "Anja Reinstadler", "Sergey Ivanov", "Ton Bisseling", "Ralph Panstruga" ], "n_citations": 137, "n_key_citations": 20, "score": 0 } ]

[ { "doc_id": "220646948", "title": "Attributional Robustness Training Using Input Gradient Spatial Alignment", "abstract": "Interpretability is an emerging area of research in trustworthy machine learning. Safe deployment of machine learning system mandates that the prediction and its explanation be reliable and robust. Recently, it has been shown that the explanations could be manipulated easily by adding visually imperceptible perturbations to the input while keeping the model's prediction intact. In this work, we study the problem of attributional robustness (i.e. models having robust explanations) by showing an upper bound for attributional vulnerability in terms of spatial correlation between the input image and its explanation map. We propose a training methodology that learns robust features by minimizing this upper bound using soft margin triplet loss. Our methodology of robust attribution training \\textit{ART} achieves the new state of the art attributional robustness measure by a margin of \\approx$ 6 18 on several standard datasets, ie. SVHN, CIFAR 10 and GTSRB. We further show the utility of the proposed robust training technique \\textit{ART} in the downstream task of weakly supervised object localization by achieving the new state of the art performance on CUB 200 dataset.", "corpus_id": 220646948, "venue": "ECCV", "year": 2020, "author_names": [ "Mayank Kumar Singh", "Nupur Kumari", "Puneet Mangla", "Abhishek Sinha", "Vineeth N Balasubramanian", "Balaji Krishnamurthy" ], "n_citations": 3, "n_key_citations": 1, "score": 1 }, { "doc_id": "219708484", "title": "Gradient Alignment in Deep Neural Networks", "abstract": "One cornerstone of interpretable deep learning is the high degree of visual alignment that input gradients, i.e.,the gradients of the output w.r.t. inputs, exhibit with the input data. This alignment is assumed to arise as a result of the model's generalization, justifying its use for interpretability. However, recent work has shown that it is possible to 'fool' models into having arbitrary gradients while achieving good generalization, thus falsifying the assumption above. This leaves an open question: if not generalization, what causes input gradients to align with input data? In this work, we first show that it is simple to 'fool' input gradients using the shift invariance property of softmax, and that gradient structure is unrelated to model generalization. Second, we re interpret the logits of standard classifiers as unnormalized log densities of the data distribution, and find that we can improve this gradient alignment via a generative modelling objective called this http URL show this, we derive a novel approximation to the score matching objective that eliminates the need for expensive Hessian computations, which may be of independent interest.Our experiments help us identify one factor that causes input gradient alignment in models, that being the approximate generative modelling behaviour of the normalized logit distributions.", "corpus_id": 219708484, "venue": "ArXiv", "year": 2020, "author_names": [ "Suraj Srinivas", "Francois Fleuret" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "59606132", "title": "Semi Supervised Learning by Label Gradient Alignment", "abstract": "We present label gradient alignment, a novel algorithm for semi supervised learning which imputes labels for the unlabeled data and trains on the imputed labels. We define a semantically meaningful distance metric on the input space by mapping a point (x, y) to the gradient of the model at (x, y) We then formulate an optimization problem whose objective is to minimize the distance between the labeled and the unlabeled data in this space, and we solve it by gradient descent on the imputed labels. We evaluate label gradient alignment using the standardized architecture introduced by Oliver et al. (2018) and demonstrate state of the art accuracy in semi supervised CIFAR 10 classification.", "corpus_id": 59606132, "venue": "ArXiv", "year": 2019, "author_names": [ "Jacob Jackson", "John Schulman" ], "n_citations": 15, "n_key_citations": 1, "score": 1 }, { "doc_id": "49556250", "title": "Glass Reflection Removal Using Co Saliency Based Image Alignment and Low Rank Matrix Completion in Gradient Domain", "abstract": "The images taken through glass often capture a target transmitted scene as well as undesired reflected scenes. In this paper, we propose a novel reflection removal algorithm using multiple glass images taken from slightly different camera positions. We first find co saliency maps for input multiple glass images based on the center prior assumption, and then align multiple images reliably with respect to the transmitted scene by selecting feature points with high co saliency values. The gradients of the transmission images are consistent while the gradients of the reflection images are varying across the aligned multiple glass images. Based on this observation, we compute gradient reliability such that the pixels belonging to consistent salient edges of the transmission image are assigned high reliability values. We restore the gradients of the transmission images and suppress the gradients of the reflection images by formulating a low rank matrix completion problem in gradient domain. Finally, we reconstruct desired transmission images from the restored transmission gradients. Experimental results show that the proposed algorithm removes the reflection artifacts from glass images faithfully and outperforms the existing methods on challenging glass images with diverse characteristics.", "corpus_id": 49556250, "venue": "IEEE Transactions on Image Processing", "year": 2018, "author_names": [ "Byeong-Ju Han", "Jae-Young Sim" ], "n_citations": 12, "n_key_citations": 2, "score": 0 }, { "doc_id": "226964434", "title": "Data efficient Alignment of Multimodal Sequences by Aligning Gradient Updates and Internal Feature Distributions", "abstract": "The task of video and text sequence alignment is a pre requisite step toward joint understanding of movie videos and screenplays. However, supervised methods face the obstacle of limited realistic training data. With this pa per, we attempt to enhance data efficiency of the end to end alignment network NeuMATCH [15] Recent research [56] suggests that network components dealing with different modalities may overfit and generalize at different speeds, creating difficulties for training. We propose to employ (1) layer wise adaptive rate scaling (LARS) to align the magnitudes of gradient updates in different layers and balance the pace of learning and (2) sequence wise batch normalization (SBN) to align the internal feature distributions from different modalities. Finally, we leverage random projection to reduce the dimensionality of input features. On the YouTube Movie Summary dataset, the combined use of these technique closes the performance gap when the pretraining on the LSMDC dataset is omitted and achieves the state of the art result. Extensive empirical comparisons and analysis reveal that these techniques improve optimization and regularize the network more effectively than two different setups of layer normalization.", "corpus_id": 226964434, "venue": "2021 IEEE Winter Conference on Applications of Computer Vision (WACV)", "year": 2021, "author_names": [ "Jianan Wang", "Boyang Li", "Xiangyu Fan", "Jing-Jhih Lin", "Yanwei Fu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "7423311", "title": "Alignment of Multimodal Sensory Input in the Superior Colliculus through a Gradient Matching Mechanism", "abstract": "The superior colliculus (SC) is a midbrain structure that integrates visual, somatosensory, and auditory inputs to direct head and eye movements. Each of these modalities is topographically mapped and aligned with the others to ensure precise behavioral responses to multimodal stimuli. While it is clear that neural activity is instructive for topographic alignment of inputs from the visual cortex (V1) and auditory system with retinal axons in the SC, there is also evidence that activity independent mechanisms are used to establish topographic alignment between modalities. Here, we show that the topography of the projection from primary somatosensory cortex (S1) to the SC is established during the first postnatal week. Unlike V1 SC projections, the S1 SC projection does not bifurcate when confronted with a duplicated retinocollicular map, showing that retinal input in the SC does not influence the topography of the S1 SC projection. However, S1 SC topography is disrupted in mice lacking ephrin As, which we find are expressed in graded patterns along with their binding partners, the EphA4 and EphA7, in both S1 and the somatosensory recipient layer of the SC. Together, these data support a model in which somatosensory inputs into the SC map topographically and establish alignment with visual inputs in the SC using a gradient matching mechanism.", "corpus_id": 7423311, "venue": "The Journal of Neuroscience", "year": 2012, "author_names": [ "Jason W Triplett", "Ann H Phan", "Jena Yamada", "David A Feldheim" ], "n_citations": 30, "n_key_citations": 3, "score": 0 }, { "doc_id": "235446621", "title": "Gradient trained Weights in Wide Neural Networks Align Layerwise to Error scaled Input Correlations", "abstract": "Recent works have examined how deep neural networks, which can solve a variety of difficult problems, incorporate the statistics of training data to achieve their success. However, existing results have been established only in limited settings. In this work, we derive the layerwise weight dynamics of infinite width neural networks with nonlinear activations trained by gradient descent. We show theoretically that weight updates are aligned with input correlations from intermediate layers weighted by error, and demonstrate empirically that the result also holds in finite width wide networks. The alignment result allows us to formulate backpropagation free learning rules, named Align zero and Align ada, that theoretically achieve the same alignment as backpropagation. Finally, we test these learning rules on benchmark problems in feedforward and recurrent neural networks and demonstrate, in wide networks, comparable performance to backpropagation.", "corpus_id": 235446621, "venue": "ArXiv", "year": 2021, "author_names": [ "Akhilan Boopathy", "Ila R Fiete" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "27198202", "title": "Image Alignment by Online Robust PCA via Stochastic Gradient Descent", "abstract": "Aligning a given set of images is usually conducted in batch mode manner, which not only requires large amount of memory but also adjusts all the previous transformations to register an input image. To address this issue, we propose a novel approach to image alignment by incorporating the geometric transformation into online robust principal component analysis (PCA) Instead of calculating the warp update using noisy input samples like the conventional methods, we suggest directly linearizing the object function by performing warp update on the recovered samples, which corresponds to an efficient inverse composition algorithm. Since the basis matrix is kept constant for a given sample, both the latent vector and warp update can be very efficiently computed. Moreover, we present two basis updating methods for robust PCA, including the closed form solution and stochastic gradient descent scheme. We have conducted the extensive experiments on the real world tasks of background subtraction with camera motion and visual tracking on the challenging video sequences, whose promising results demonstrate the efficacy of our presented approach.", "corpus_id": 27198202, "venue": "IEEE Transactions on Circuits and Systems for Video Technology", "year": 2016, "author_names": [ "Wenjie Song", "Jianke Zhu", "Yang Li", "Chun Chen" ], "n_citations": 33, "n_key_citations": 6, "score": 0 }, { "doc_id": "7637082", "title": "Beam Tracking for Interference Alignment in Time Varying MIMO Interference Channels: A Conjugate Gradient Based Approach", "abstract": "In this paper, an adaptive beam tracking algorithm for interference alignment (IA) in time varying multiple input multiple output (MIMO) interference channels is presented. It is shown that obtaining a set of interference aligning transmit beamforming matrices is equivalent to minimizing a certain Rayleigh quotient, and an approach based on the conjugate gradient (CG) method combined with metric projection is applied to this minimization problem to construct an adaptive algorithm for interference aligning beam design. The convergence of the proposed algorithm in static channels is established, and the steady state behavior of the proposed algorithm in time varying channels is investigated by numerical simulations. The performance of the proposed algorithm is evaluated numerically, and numerical results show that the proposed algorithm performs well with low computational complexity.", "corpus_id": 7637082, "venue": "IEEE Transactions on Vehicular Technology", "year": 2014, "author_names": [ "Junseo Lee", "Heejung Yu", "Youngchul Sung" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "218628827", "title": "Reconfigurable Intelligent Surface for Interference Alignment in MIMO Device to Device Networks", "abstract": "In multiple input multiple output (MIMO) device to device (D2D) networks, interference and rank deficient channels are the critical bottlenecks for achieving high degrees of freedom (DoFs) In this paper, we propose a reconfigurable intelligent surface (RIS) assisted interference alignment strategy to simultaneously mitigate the co channel interference and cope with rank deficient channels, thereby improving the feasibility of interference alignment conditions and in turn increasing the achievable DoFs. The key enabler is a general low rank optimization approach that maximizes the achievable DoFs by jointly designing the phase shift and transceiver coding matrices. To address the unique challenges of the rank objective function, the unit modulus constraints, and the bilinear constraint resulting from coupled optimization variables, we develop a block structured Riemannian pursuit method by solving fixed rank and unit modulus constrained least square subproblems along with rank increase. Finally, to achieve good DoF performance, we develop unified Riemannian conjugate gradient algorithms to alternately optimize the fixed rank transceiver matrix and the unit modulus constrained phase shifter by exploiting the non compact Stiefel manifold and the complex circle manifold, respectively. Numerical results demonstrate the effectiveness of deploying an RIS and the superiority of the proposed block structured Riemannian pursuit method in terms of the achievable DoFs compared to the state of the art methods.", "corpus_id": 218628827, "venue": "2021 IEEE International Conference on Communications Workshops (ICC Workshops)", "year": 2021, "author_names": [ "Min Fu", "Yong Zhou", "Yuanming Shi" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "116183288", "title": "A Sensor Fault Diagnosis Method for a Lithium Ion Battery Pack in Electric Vehicles", "abstract": "In electric vehicles, a battery management system highly relies on the measured current, voltage, and temperature to accurately estimate state of charge (SOC) and state of health. Thus, the normal operation of current, voltage, and temperature sensors is of great importance to protect batteries from running outside their safe operating area. In this paper, a simple and effective model based sensor fault diagnosis scheme is developed to detect and isolate the fault of a current or voltage sensor for a series connected lithium ion battery pack. The difference between the true SOC and estimated SOC of each cell in the pack is defined as a residual to determine the occurrence of the fault. The true SOC is calculated by the coulomb counting method and the estimated SOC is obtained by the recursive least squares and unscented Kalman filter joint estimation method. In addition, the difference between the capacity used in SOC estimation and the estimated capacity based on the ratio of the accumulated charge to the SOC difference at two nonadjacent sampling times can also be defined as a residual for fault diagnosis. The temperature sensor which is assumed to be fault free is used to distinguish the fault of a current or voltage sensor from the fault of a battery cell. Then, the faulty current or voltage sensor can be isolated by comparing the residual and the predefined threshold of each cell in the pack. The experimental and simulation results validate the effectiveness of the proposed sensor fault diagnosis scheme.", "corpus_id": 116183288, "venue": "IEEE Transactions on Power Electronics", "year": 2019, "author_names": [ "Rui Xiong", "Quanqing Yu", "Weixiang Shen", "Cheng Lin", "Fengchun Sun" ], "n_citations": 62, "n_key_citations": 0, "score": 0 }, { "doc_id": "104372556", "title": "Thermal management of Li ion battery pack with the application of flexible form stable composite phase change materials", "abstract": "Abstract A method for thermal management of Li ion battery pack with the application of various flexible form stable composite phase change materials (CPCMs) is proposed, and investigated both numerically and experimentally. Flexible CPCMs embedded in battery pack lower the thermal contact resistance, thereby improving the thermal control performance. Experimental results show that with the application of flexible CPCMs, the battery temperature drops by 18 degC at 10 C discharge rate. In addition, flexible CPCM has better thermal control performance than the case of conventional CPCMs. This allows Li ion battery pack to safely work for an extended period of time without exceeding upper temperature limits. The thermal control performance is observed to vary considerably with three factors: the phase change temperature of flexible CPCMs, working condition, and the ambient temperature. One flexible CPCM with phase change temperature of 33 degC is found to be optimal for small power levels and low ambient temperatures. Another flexible CPCM with 47 degC of phase change temperature is suitable for high power levels, short term high heat fluxes, and high ambient temperatures. The numerical results are in reasonable accordance with experimental ones.", "corpus_id": 104372556, "venue": "Energy Conversion and Management", "year": 2019, "author_names": [ "Yi-Huan Huang", "Wen-long Cheng", "Rui Zhao" ], "n_citations": 54, "n_key_citations": 0, "score": 1 }, { "doc_id": "128181737", "title": "Energy and environmental assessment of a traction lithium ion battery pack for plug in hybrid electric vehicles", "abstract": "Traction batteries are a key factor in the environmental sustainability of electric mobility and, therefore, it is necessary to evaluate their environmental performance to allow a comprehensive sustainability assessment of electric mobility. This article presents an environmental assessment of a lithium ion traction battery for plug in hybrid electric vehicles, characterized by a composite cathode material of lithium manganese oxide (LiMn2O4) and lithium nickel manganese cobalt oxide Li(NixCoyMn1 x y)O2. Composite cathode material is an emerging technology that promises to combine the merits of several active materials into a hybrid electrode to optimize performance and reduce costs. In this study, the environmental assessment of one battery pack (with a nominal capacity of 11.4 kWh able to be used for about 140,000 km of driving) is carried out by using the Life Cycle Assessment methodology consistent with ISO 14040. The system boundaries are the battery production, the operation phase and recycling at the end of life, including the recovery of various material fractions. The composite cathode technology examined besides a good compromise between the higher and the lower performance of NMC and LMO cathodes, can present good environmental performances. The results of the analysis show that the manufacturing phase is relevant to all assessed impact categories (contribution higher than 60% With regard to electricity losses due to battery efficiency and battery transport, the contribution to the use phase impact of battery efficiency is larger than that of battery transport. Recycling the battery pack contributes less than 11% to all of the assessed impact categories, with the exception of freshwater ecotoxicity (60% of the life cycle impact) The environmental credits related to the recovery of valuable materials (e.g. cobalt and nickel sulphates) and other metal fractions (e.g. aluminium and steel) are particularly relevant to impact categories such as marine eutrophication, human toxicity and abiotic resource depletion. The main innovations of this article are that (1) it presents the first bill of materials of a lithium ion battery cell for plug in hybrid electric vehicles with a composite cathode active material; (2) it describes one of the first applications of the life cycle assessment to a lithium ion battery pack for plug in hybrid electric vehicles with a composite cathode active material with the aim of identifying the \"hot spots\" of this technology and providing useful information to battery manufacturers on potentially improving its environmental sustainability; (3) it evaluates the impacts associated with the use phase based on primary data about the battery pack's lifetime, in terms of kilometres driven; and (4) it models the end of life phase of the battery components through processes specifically created for or adapted to the case study.", "corpus_id": 128181737, "venue": "Journal of cleaner production", "year": 2019, "author_names": [ "Maria Anna Cusenza", "Silvia Bobba", "Fulvio Ardente", "Maurizio Cellura", "Franco Di Persio" ], "n_citations": 73, "n_key_citations": 2, "score": 0 }, { "doc_id": "116143530", "title": "A surrogate thermal modeling and parametric optimization of battery pack with air cooling for EVs", "abstract": "Abstract The battery packs in electric vehicles usually operate at high current discharge rates which leads to the higher heat generation. This may have safety issues and negative impact on the battery performance over the period. Existing researches focused more on the configurations and design of battery cells/modules arrangements to reduce the maximum temperature rise of the battery pack. However, temperature differences are more important and difficult to manage. It is also known that smaller the size of the battery pack, higher the space can be saved. This article proposes a comprehensive methodology to design an efficient air cooling system, which is hybrid of system volume and cooling performance. The proposed methodology comprises of the four steps: the design of air cooling battery, setup of the computational fluid dynamics codes, design of experiments (DoE) evaluation and selection of surrogate models. These models are then optimized using the multi objective optimization approach for the selection of optimum scheme for air cooling battery module. The optimization results show that the optimized air cooling battery module has higher thermal performance. The proposed methodology will be useful for industrial battery pack design process to reduce maximum temperature, temperature difference and the volume of battery pack.", "corpus_id": 116143530, "venue": "", "year": 2019, "author_names": [ "Wei Li", "Mi Xiao", "Xiongbin Peng", "Akhil Ranjan Garg", "Liang Gao" ], "n_citations": 59, "n_key_citations": 0, "score": 1 }, { "doc_id": "117417285", "title": "Model based insulation fault diagnosis for lithium ion battery pack in electric vehicles", "abstract": "Abstract The condition monitoring and fault diagnosis of the lithium ion battery system are crucial issues for electric vehicles. The shocks, blows, twists, and vibrations during the electric vehicle driving process may cause the insulation fault. In order to ensure the safety of the drivers and passengers, a real time monitor to detect the insulation state between the high voltage and ground is required. However, the conventional battery management system only provides very simple and coarse grained measurements to detect the insulation resistance. In this work, a model based insulation fault diagnosis method is proposed. Firstly, the equivalent circuit model for insulation fault diagnosis is established using a high fidelity cell model. Then, the recursive least squares method is employed to identify the model parameters. Considering the system nonlinear properties, measurement noise and unknown disturbance, the Kalman filter based state observer is designed for joint estimation of both the battery voltage and state of charge using the identified battery model. Finally, the positive and negative virtual insulation resistance are quantitatively assessed based on the prediction results of the state observer. Experiments under different loading profiles are performed to verify the proposed method.", "corpus_id": 117417285, "venue": "", "year": 2019, "author_names": [ "Yujie Wang", "Jiaqiang Tian", "Zonghai Chen", "Xingtao Liu" ], "n_citations": 27, "n_key_citations": 0, "score": 0 }, { "doc_id": "125277892", "title": "Design of the structure of battery pack in parallel air cooled battery thermal management system for cooling efficiency improvement", "abstract": "Abstract In this paper, the cell spacing distribution of the battery pack in the parallel air cooled BTMS is designed to improve the cooling efficiency of the system. The flow resistance network model is used to calculate the airflow rates in the cooling channels. A modification factor is introduced to reduce the error of the model. The effectiveness of the model is verified by the computational fluid dynamics (CFD) calculation, and the CFD method is validated by the experimental air cooled system with aluminum blocks. Combining with the improved flow resistance network model, an optimization strategy is adopted to optimize the battery cell spacings for the homogenization of the airflow rates among the cooling channels. Then an adjustment coefficient is introduced to adjust the airflow rates in the cooling channels for more uniform cell temperatures. The results of typical numerical cases indicate that the cooling efficiency of the BTMS is improved remarkably after the cell spacing optimization using the developed strategy. Compared to the original BTMS, the maximum temperature of the battery pack for the optimized BTMS is reduced by about 4.0 K, and the maximum cell temperature difference is reduced by more than 69% for various inlet airflow rates. Compared to the optimized BTMS in previous study, the maximum cell temperature difference for the present optimized BTMS is reduced by more than 25% for various inlet airflow rates.", "corpus_id": 125277892, "venue": "International Journal of Heat and Mass Transfer", "year": 2019, "author_names": [ "Kai Chen", "Mengxuan Song", "Wei Wei", "Shuangfeng Wang" ], "n_citations": 45, "n_key_citations": 0, "score": 1 }, { "doc_id": "116132982", "title": "Three dimensional thermal modeling of Li ion battery cell and 50 V Li ion battery pack cooled by mini channel cold plate", "abstract": "Abstract In this work, three dimensional (3D) thermal modeling of a single Li ion battery cell and a 50 V Li ion battery pack composed of 14 prismatic batteries is performed. Equivalent circuit model is used for subscale electrochemical modeling. The heat generated by electrical resistance and electrochemistry reactions is then solved in the cell domain which resolves the heat transfer in battery and battery pack. The modeling provides highly resolved temporal 3D insight into thermal and battery dynamics under fast discharging and abusive condition. It is found that with low coolant velocity, the cell temperature easily exceeds 40 degC, and temperature non uniformity exceeds the limit value of 5 degC under 5C discharging condition; and under external shorting condition, temperature rises fast and reaches the 80 degC point quickly which can further trigger thermal runaway. On the other hand, with adequate coolant flow rate, the cell temperature and temperature gradients are effectively limited to tolerable level under both 5C discharging and external shorting conditions. Thus, coolant rate needs to be carefully designed to prevent high temperature and localized high temperature spot in Li ion battery. The modeling method used in this study can be applied to general Li ion battery and Li ion battery pack designing.", "corpus_id": 116132982, "venue": "", "year": 2019, "author_names": [ "Yubai Li", "Zhi-fu Zhou", "Wei-Tao Wu" ], "n_citations": 32, "n_key_citations": 0, "score": 2 }, { "doc_id": "116826956", "title": "Thermal performance investigation of an air cooled lithium ion battery pack considering the inconsistency of battery cells", "abstract": "Abstract A lithium ion battery pack is the power source of an electric vehicle, and its temperature rise is one of the main concerns. Existing research mainly focused on the design of cooling systems, and always used computational fluid dynamics to analyze the thermal behavior of batteries, regardless of the individual differences of batteries. In this paper, the heat dissipation performance of air cooled battery packs considering the different thermal performance of different batteries was studied. A more realistic thermal model of the battery pack at 1C discharge rate was obtained through equivalent calculation and experimental verification. The results showed that the temperature of batteries with different thermal performance rose faster and the temperature difference was larger. At the same time, the thermal performance of the battery can be improved by placing the outlet and inlet on the same side. The thermal performance was more sensitive to the inlet exhaust height than to the outlet exhaust height. The research results can provide a basis for exploring the design method of battery packs with better heat dissipation performance, lower energy consumption, and a smaller volume.", "corpus_id": 116826956, "venue": "Applied Thermal Engineering", "year": 2019, "author_names": [ "Xiongbin Peng", "Chong Ma", "Akhil Ranjan Garg", "Nengsheng Bao", "Xiangping Liao" ], "n_citations": 33, "n_key_citations": 0, "score": 1 }, { "doc_id": "116713088", "title": "Minimization of thermal non uniformity in lithium ion battery pack cooled by channeled liquid flow", "abstract": "Abstract In this work we conduct a numerical study with the aim of analyzing the effectiveness of cooling channels to reduce thermal non uniformity in lithium ion battery packs of electric vehicles. Particular approaches toward zero or near zero thermal non uniformity in lithium ion battery packs are proposed and their performance and viability are evaluated through numerical simulations. Battery packs cooled by liquid flowing in serpentine channels are used to illustrate the proposed approaches. A thermal model, which has been extensively tested, is applied to a battery module of 71 18650 type NMC (nickel manganese cobalt) batteries. In particular, among several approaches, two of them show considerable promise in improving the pack thermal uniformity, namely: (a) shortened flow paths by using multiple serpentine channels, and (b) increasing contact areas between the batteries and the serpentine channel along the flow path in the streamwise direction. The results of the numerical simulation indicate that these two particular approaches can reduce the thermal non uniformity of the battery module under 5C discharge operations to values lower than 2.2 K and 0.7 K, respectively. The description, functional feasibility and effectiveness of these approaches are extensively covered in the present work.", "corpus_id": 116713088, "venue": "International Journal of Heat and Mass Transfer", "year": 2019, "author_names": [ "Chun-rong Zhao", "Antonio C M Sousa", "Fangming Jiang" ], "n_citations": 52, "n_key_citations": 0, "score": 1 }, { "doc_id": "61809597", "title": "A Novel Dynamic Performance Analysis and Evaluation Model of Series Parallel Connected Battery Pack for Electric Vehicles", "abstract": "Due to the low voltage and small capacity of a Li ion battery cell, large numbers of cells are connected to construct a battery pack to satisfy the voltage and capacity requirement of the power system of an electric vehicle. Focusing on parallel and series connection mode of battery packs, the main contributions include the following. First, in order to increase the utilization rate of cells and enhance the performance of the battery pack, a method that makes the battery pack achieve their maximum initial capacity has been proposed. Second, a dynamic modeling and analysis method for the battery pack based on the equivalent circuit model has also been proposed. The results show that the battery pack in parallel and then in series has a better performance on charge/discharge capacity, efficiency, and utilization rate of cells. Third, the performance analysis and evaluation platform of the battery pack has been built, and the battery pack test results of different groups supported the conclusion of the simulation. The battery packs in parallel and then in series can achieve superior performance and greatly increase capacity and energy utilization.", "corpus_id": 61809597, "venue": "IEEE Access", "year": 2019, "author_names": [ "Min Ye", "Xun Song", "Rui Xiong", "Fengchun Sun" ], "n_citations": 21, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "225387387", "title": "The Practice of Extensive Reading among EFL Learners in Tertiary Level", "abstract": "Students had some problems in terms of extensive reading. The problems were (1) students forget some principles and benefits of extensive reading because they learned about principle and benefits of extensive reading in the previous semester, (2) students do not know how to implement a successful practice of extensive reading, and (3) students were still difficult to enjoy and get information in their reading of either fiction or nonfiction books. Thus, this research was aimed to know how students implement extensive reading and students' difficulties when practice extensive reading. This research was qualitative descriptive research. The subject of this research was the fourth semester students in the English Education Study Program of Institut Agama Islam Negeri Bengkulu. The instruments of this research were observation checklist, interview sheet, and documentation. The result of this research showed that there were students who implemented extensive reading but students implemented extensive reading in the outside classroom and the students still had difficulties when implementing extensive reading. The percentage of students' implementation of extensive reading in the outside classroom was 62% while the percentage of students' difficulties encounter practicing extensive reading was 91% It concluded that students implemented extensive reading in the outside classroom without the supervision of the lecturer and students have many problems when practice extensive reading.", "corpus_id": 225387387, "venue": "", "year": 2020, "author_names": [ "Feny Martina", "Syafryadin Syafryadin", "J A Utama" ], "n_citations": 22, "n_key_citations": 0, "score": 1 }, { "doc_id": "203069732", "title": "EXTENSIVE READING: THEORY, RESEARCH AND IMPLEMENTATION", "abstract": "There are three purposes of this paper, the first of which is to elucidate the theory and principles underlying extensive reading. Long held principles will be discussed in light of practical classroom and contextual considerations. Secondly, a critical summary of current research on extensive reading that has been conducted in English as a Second Language and English as a Foreign Language contexts and has been published over the last five years will be presented. By highlighting the vast benefits of extensive reading on improving many aspects of L2 learners' language proficiency, we hope to encourage greater implementation of extensive reading in educational institutions worldwide. Teachers will also become more familiar with future directions in the practice of implementing extensive reading programs such as how to capitalize on the potential of the Internet to monitor and assess learners' progress in reading extensively. Thirdly, the paper provides directions for future research which we believe might fill critical gaps in our knowledge about ER.", "corpus_id": 203069732, "venue": "TEFLIN Journal A publication on the teaching and learning of English", "year": 2019, "author_names": [ "Qiu Rong Ng", "Willy A Renandya", "Miao Yee Clare Chong" ], "n_citations": 7, "n_key_citations": 2, "score": 1 }, { "doc_id": "196186368", "title": "Building Reading Fluency with Mobile Assisted Extensive Reading", "abstract": "The study aims at investigating students' reading fluency through mobile assisted extensive reading in effect and responses. Forty five students (14 males and 31 females) were involved in the study. The participants were asked to read the materials of graded reading in electronic books by using their mobile phone. To measure their reading fluency, reading rate was counted in word per minute. The results show that mobile assisted extensive reading outperformed the students' reading fluency. Some participants commented that mobile based extensive reading was likely to build their reading fluency. It indicated that mobile might have the potential way not only for reading comprehension but also for reading extensively.", "corpus_id": 196186368, "venue": "Int. J. Interact. Mob. Technol.", "year": 2019, "author_names": [ "Hendriwanto Hendriwanto", "Utut Kurniati" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "182002105", "title": "Extensive reading book", "abstract": "INGGRIS: Reading has important role in foreign language learning. Extensive Reading (ER) is an approach to second language reading. When learners read extensively, they read very easy, enjoyable books to build their reading speed and fluency. Extensive Reading gives students chances to read longer pieces of reading, which they choose, which they can read at their own speed and at their own ability level. Extensive Reading builds vocabulary. When learners read a lot, they meet thousands of words and lexical (word) patterns that are not taught in textbooks. Extensive Reading allows the learner to develop an awareness of collocations (common word partnerships) and thousands of lexical phrases. Extensive Reading helps learners understand grammar. In textbooks learners meet hundreds of grammar patterns. However, textbooks do not provide enough meetings with grammar for real acquisition to occur. Extensive Reading provides opportunities to see grammar in context so learners can deepen their understanding of how grammar is really used. Extensive Reading helps learners to build reading speed and reading fluency. In particular, developing reading speed is important because it helps learners to understand language faster and better. One objective of Extensive Reading is reading for pleasure. This builds confidence and motivation which makes the learner a more effective user of language. This Extensive Reading textbook provides a presentation of reading subjects in a simple and easy way according to the needs of the learning objectives. The process of compiling this book has been adapted to the results of the analysis of reading learning material needs so far. This book has thirteen chapters to improve students' understanding of the extensive reading course. Chapter 1 discusses the extensive reading. So that students at the beginning of learning have a special introduction to this course. Chapter two learns about composing summary. In this chapter, students make a summary of the text that has been read and understand the storyline presented. Chapter three about creating illustration. In this chapter students must be able to make summaries presented in the blog. Chapter four presents material about reviewing the text that has been studied. Chapter five discusses summary presentation. This material teaches students how to present their understanding of the text. Chapter six presents an understanding of text through role play. Students will perform role playing activities from text scripts that have been provided or made by students. Chapter seven presents the concept of identifying reading content. Chapter eight directs students to increase the ability of summarize and analyze the contents of text that has been read. Chapter nine discusses the storyline concept. Chapter ten discusses written text in novel form and understands text through stories in films. Chapter eleven discusses fiction text. Students are directed to be able to read and understand the contents of stories in works of fiction. Chapter twelve discusses understanding of non fiction texts such as academic texts. Chapter thirteen teaches students to illustrate stories that have been read in the text.", "corpus_id": 182002105, "venue": "", "year": 2019, "author_names": [ "Nurul Lailatul Khusniah" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "214257612", "title": "Teaching Extensive Reading in Another Language", "abstract": "Chapter 1: Keeping extensive reading simple Chapter 2: What are graded readers? Chapter 3: Case studies of extensive reading programs Chapter 4: How do you set up and run an extensive reading program? Chapter 5: How vocabulary is learned from extensive reading Chapter 6: The most important studies on extensive reading in a foreign language Chapter 7: Research findings: motivation and pushing learners to read Chapter 8: Research findings: Does extensive reading result in reading fluency and comprehension improvement? Chapter 9: Research on vocabulary learning from extensive reading Chapter 10: Developing reading fluency Chapter 11: Designing research into extensive reading Chapter 12: What makes a good graded reading scheme? Chapter 13: A way forward References", "corpus_id": 214257612, "venue": "", "year": 2019, "author_names": [ "I S P Nation", "Rob Waring" ], "n_citations": 12, "n_key_citations": 2, "score": 0 }, { "doc_id": "150250894", "title": "Incorporating task based learning in an extensive reading programme", "abstract": "This article reports on an EFL reading programme that integrated extensive reading with task based learning to promote L2 learners' language development, increase their motivation in reading, and help them build reading habits. In this programme, students took an active role in selecting graded reading material relevant to their interests and participated in reasoning gap, information gap, opinion exchange, and decision making tasks in the classroom. Data were collected through interviews with students, classroom observation, students' reading logs, and reflective journals. The results indicated that the combination of interesting reading materials and meaningful tasks created positive experiences in language learning. Comprehensible input from extensive reading and productive output in the follow up tasks proved to be effective in facilitating language development. Most importantly, students reported feeling a sense of achievement when sharing what they read with peers and completing the tasks, which then motivated them to read more books and gradually develop reading habits.", "corpus_id": 150250894, "venue": "", "year": 2018, "author_names": [ "I-Chen Chen" ], "n_citations": 15, "n_key_citations": 1, "score": 0 }, { "doc_id": "55098423", "title": "The Effects of Extensive Reading on English Vocabulary Learning: A Meta Analysis.", "abstract": "Extensive reading has been continuously studied as a promising instructional method for improving students' language proficiency, including reading proficiency, vocabulary acquisition, and grammar awareness. The present study is a meta analysis, which synthesized the data of 21 empirical studies (N 1268) It was designed to explore whether extensive reading instruction was effective in improving students' vocabulary acquisition, and if so, how the effectiveness varied in terms of the instruction length and teaching methods. Stata 14.0 was utilized to calculate the collected data. The results revealed that: (1) extensive reading has a significant effect on English vocabulary learning; (2) one semester (less than three months) is the most appropriate length of extensive reading instruction for vocabulary learning; (3) Graded Readers, comprehension questions and vocabulary exercise play significant roles as reading materials and education methods in promoting the vocabulary learning of EFL learners.", "corpus_id": 55098423, "venue": "", "year": 2018, "author_names": [ "Jiren Liu", "Jianying Zhang" ], "n_citations": 12, "n_key_citations": 2, "score": 0 }, { "doc_id": "63976342", "title": "Extensive Reading Activities For Teaching Language", "abstract": "extensive reading activities for teaching language is available in our book collection an online access to it is set as public so you can download it instantly. Our digital library spans in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the extensive reading activities for teaching language is universally compatible with any devices to read.", "corpus_id": 63976342, "venue": "", "year": 2016, "author_names": [ "Mathias Franc Kluge" ], "n_citations": 103, "n_key_citations": 13, "score": 1 }, { "doc_id": "148052881", "title": "The Effects of Extensive Reading on Reading Comprehension, Reading Rate, and Vocabulary Acquisition", "abstract": "Several empirical studies and syntheses of extensive reading have concluded that extensive reading has positive impacts on language learning in second and foreign language settings. However, many of the studies contained methodological or curricular limitations, raising questions about the asserted positive effects of extensive reading. The present research adds to the limited set of well controlled studies by investigating the impact of an extensive reading approach over a 15 week semester on the reading comprehension, reading rate, and vocabulary acquisition of Korean university students studying English as a foreign language. A quasi experimental research design was employed using four intact classes: two control (n 88) and two experimental (n 83) The control classes received 100 minute intensive reading instruction per week, whereas the experimental classes received equivalent 70 minute intensive reading instruction and 30 minute extensive reading instruction per week. A repeated measures multivariate analysis of variance revealed that the experimental classes significantly outperformed the control classes on the combination of the three dependent variables (i.e. reading comprehension, reading rate, vocabulary acquisition) Subsequent analyses of variance confirmed the positive impacts of extensive reading on all three areas. Instructional implications for extensive reading in second language curricula are discussed.", "corpus_id": 148052881, "venue": "", "year": 2017, "author_names": [ "Namhee Suk" ], "n_citations": 63, "n_key_citations": 3, "score": 0 }, { "doc_id": "210574908", "title": "Using Authentic Materials in Extensive Reading", "abstract": "Extensive reading involves learners reading texts for enjoyment and developing their general reading skills. Extensive reading schemes using authentic materials characterized by their content relevance and challenging difficulty have been assumed to provide students, especially those at the tertiary level, with more interest and motivation. Facing the problems of non English major students having little previous experience or motivation in reading comprehension and a time constraint of twenty five lessons they are under while training for the TOEIC test, the research adopted an extensive reading plan using English online news selected by students based on their own interest. To investigate their perception of the program, the study used questionnaires, reflection journals and semi structured interviews to collect data among a group of 10 participants in a private teaching center. The findings revealed different levels of engagements in the program, and their favor towards the reading materials due to benefits the program brought, including topic familiarity, vocabulary enrichment and some other factors such as visual aids or authenticity as compared to unfamiliar topics in their course books. The participants actually preferred the freedom of choosing their reading materials and expected certain levels of teacher's support and immediate communication. In conclusion, the program worked in generating students' interest in extensive reading as a method of practicing the skills. Based on the results, the researcher considers organizing group discussions after each extensive reading session or controlling the choice of news if students are of lower levels.", "corpus_id": 210574908, "venue": "", "year": 2018, "author_names": [ "My Linh Thi Nguyen" ], "n_citations": 5, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "221118637", "title": "Bidirectional Multi tier Cognitive Swarm Drone 5G Network", "abstract": "The use of unmanned aerial vehicle (UAV) as a dynamic node in point to point communication of 5G and beyond 5G cellular networks is an emerging technology. It provides a reliable and efficient mode of wireless communication network in the sky. Existing architectures include single tier and multi tier drone architecture. Major challenges in multi tier architecture is in establishing an air traffic control system and in efficient resource sharing between the drones. To overcome the challenges associated with the multitier drone and cellular drone networks, a bidirectional multitier cognitive swarm drone network (BMCSDN) is proposed and investigated in terms of spectrum efficiency and allocation of optimized altitude and power for down link transmission. The proposed method uses the cognitive swarm drone (CSD) concept and provides enhancement of capacity and coverage with optimized transmission efficiency. The work also analyses the effect of interference when all CSDs transmit and receive with static and dynamic frequency allocations.", "corpus_id": 221118637, "venue": "IEEE INFOCOM 2020 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)", "year": 2020, "author_names": [ "Sunil Jacob", "Varun G Menon", "Shynu Gopalan Padinjappurathu", "KS FathimaShemim", "Bandana Mahapatra", "Saira Joseph" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "235083475", "title": "The Aspects of Swarm Drone Terrorism and Its Effective Countermeasures", "abstract": "", "corpus_id": 235083475, "venue": "", "year": 2020, "author_names": [ "Hyunho Kim", "Park Hong-Sung", "Chae Kyu-Chil" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "231675831", "title": "RESEARCH ON SWARM DRONE USING WIRELESS NAVIGATION NETWORK IN PERFORMING BIRD MODEL SWARM DRONE", "abstract": "This research presented the preliminary research about swarm algorithm for simple maneuver of drones using wireless navigation network as a locator and communication. A simple and efficient solution to synchronize and orchestrate a swarm of drones lies in the RF communications to position drones where we can try a simple swarm algorithm. The communication control among drones used transmitter and receiver placed on each of the drones' wireless navigation network (WNN) The mechanism of drone motion can be directed into swarm motion where random motion is done by each drone without collation and leader which called as Apus Model Swarm Drone (AMSD) It can also be directed in the kind of following motion where the leader drone followed by other drones which completely autonomous which called Boid Model Swarm Drone (BMSD) The results obtained by placing the vertical obstacle randomly. The AMSD, although not perfectly in finished entire the swarm motion, given a promising result in the next ongoing research as a new novelty of experiment in swarm drone with adding extremely random motion in speed. Keyword: Swarm, drone, algorithm, wireless, navigation.", "corpus_id": 231675831, "venue": "", "year": 2020, "author_names": [ "Yeffry Handoko" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "222219582", "title": "Deep Learning based Anomaly Detection for a Vehicle in Swarm Drone System", "abstract": "In this paper, we perform the actual verification of the anomaly detection (AD) model of each drone that indicates the anomaly in swarm drone flight using the actual flight data. For this purpose, we use a model based AD method that uses data accumulated through actual flight tests. The AD model uses a deep neural network based generation model to create a training model with normal data and perform tests with abnormal data. As a result, the diagnostic results of mainly three cases are derived and analyzed for validity. The proposed AD method can be integrated with a machine learning based framework that can immediately detect abnormal behavior of swarm drone flights, which can be utilized to improve the reliability of swarm drone flight operations.", "corpus_id": 222219582, "venue": "2020 International Conference on Unmanned Aircraft Systems (ICUAS)", "year": 2020, "author_names": [ "Hyojung Ahn" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "210848409", "title": "Learning Based Anomaly Detection and Monitoring for Swarm Drone Flights", "abstract": "This paper addresses anomaly detection and monitoring for swarm drone flights. While the current practice of swarm flight typically relies on the operator's naked eyes to monitor health of the multiple vehicles, this work proposes a machine learning based framework to enable detection of abnormal behavior of a large number of flying drones on the fly. The method works in two steps: a sequence of two unsupervised learning procedures reduces the dimensionality of the real flight test data and labels them as normal and abnormal cases; then, a deep neural network classifier with one dimensional convolution layers followed by fully connected multi layer perceptron extracts the associated features and distinguishes the anomaly from normal conditions. The proposed anomaly detection scheme is validated on the real flight test data, highlighting its capability of online implementation.", "corpus_id": 210848409, "venue": "", "year": 2019, "author_names": [ "Hyojung Ahn", "Han-Lim Choi", "Min-Soo Kang", "Sung Tae Moon" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "218517029", "title": "SwarmLab: a Matlab Drone Swarm Simulator", "abstract": "Among the available solutions for drone swarm simulations, we identified a lack of simulation frameworks that allow easy algorithms prototyping, tuning, debugging and performance analysis. Moreover, users who want to dive in the research field of drone swarms often need to interface with multiple programming languages. We present SwarmLab, a software entirely written in MATLAB, that aims at the creation of standardized processes and metrics to quantify the performance and robustness of swarm algorithms, and in particular, it focuses on drones. We showcase the functionalities of SwarmLab by comparing two decentralized algorithms from the state of the art for the navigation of aerial swarms in cluttered environments, Olfati Saber's and Vasarhelyi's. We analyze the variability of the inter agent distances and agents' speeds during flight. We also study some of the performance metrics presented, i.e. order, inter and extra agent safety, union, and connectivity. While Olfati Saber's approach results in a faster crossing of the obstacle field, Vasarhelyi's approach allows the agents to fly smoother trajectories, without oscillations. We believe that SwarmLab is relevant for both the biological and robotics research communities, and for education, since it allows fast algorithm development, the automatic collection of simulated data, the systematic analysis of swarming behaviors with performance metrics inherited from the state of the art.", "corpus_id": 218517029, "venue": "2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)", "year": 2020, "author_names": [ "Enrica Soria", "Fabrizio Schiano", "Dario Floreano" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "211011238", "title": "Towards Brain Computer Interfaces for Drone Swarm Control", "abstract": "Noninvasive brain computer interface (BCI) decodes brain signals to understand user intention. Recent advances have been developed for the BCI based drone control system as the demand for drone control increases. Especially, drone swarm control based on brain signals could provide various industries such as military service or industry disaster. This paper presents a prototype of a brain swarm interface system for a variety of scenarios using a visual imagery paradigm. We designed the experimental environment that could acquire brain signals under a drone swarm control simulator environment. Through the system, we collected the electroencephalogram (EEG) signals with respect to four different scenarios. Seven subjects participated in our experiment and evaluated classification performances using the basic machine learning algorithm. The grand average classification accuracy is higher than the chance level accuracy. Hence, we could confirm the feasibility of the drone swarm control system based on EEG signals for performing high level tasks.", "corpus_id": 211011238, "venue": "2020 8th International Winter Conference on Brain Computer Interface (BCI)", "year": 2020, "author_names": [ "Ji-Hoon Jeong", "Dae-Hyeok Lee", "Hyung-Ju Ahn", "Seong-Whan Lee" ], "n_citations": 6, "n_key_citations": 1, "score": 0 }, { "doc_id": "218628807", "title": "Swarm based Drone as a Service (SDaaS) for Delivery", "abstract": "We propose a novel framework for composing Swarm based Drone as a Service (SDaaS) for delivery. Two composition approaches, i.e. sequential and parallel are designed considering the different behaviors of drone swarms. The proposed framework considers various constraints, e.g. recharging time and limited battery to meet delivery deadlines. We propose SDaaS composition algorithms using a modified A* algorithm. A cooperative behavior model is incorporated to reduce recharging and waiting time in a delivery. Experimental results prove the efficiency of the proposed approach.", "corpus_id": 218628807, "venue": "2020 IEEE International Conference on Web Services (ICWS)", "year": 2020, "author_names": [ "Balsam Alkouz", "Athman Bouguettaya", "Sajib Mistry" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "216193444", "title": "Toward Robust and Intelligent Drone Swarm: Challenges and Future Directions", "abstract": "The rapid development of Space Air Ground integrated network, IoT, and swarm based robotic systems has promoted the transformation of traditional single drone toward drone swarm. Compared to the traditional single drone, drone swarm can collaboratively complete complex tasks with higher efficiency and lower cost, especially in harsh environments. Communication and networking techniques are essential to enabling collaborate information sharing, coordinating multiple drones, and achieving autonomous drone swarm. However, the traditional communication technologies on fixed networks or slowly moving networks cannot address the unique characteristics of drone swarm, such as high dynamic topology, intermittent links and capability constraints. Two kinds of networking techniques fit for different drone swarm tasks are investigated, and the performance indexes of several wireless technologies suitable for drone swarm are also analyzed. Considering that drone swarm would usually be deployed in dire circumstances and the network may get frequently partitioned, the robustness of drone swarm becomes crucial. Based on the Molloy Reed criterion, a swarm intelligent robust solution for drone swarm is proposed by using the consensus method and grey prediction, which has advantages of small overhead and local information exchanging. The simulation results corroborate that the robustness to node failure of drone swarm can be effectively improved by the proposed method.", "corpus_id": 216193444, "venue": "IEEE Network", "year": 2020, "author_names": [ "Wu Chen", "Jiajia Liu", "Hongzhi Guo", "Nei Kato" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "211001464", "title": "Distributed Deep Reinforcement Learning for Drone Swarm Control", "abstract": "We applied Deep Q Reinforcement Learning, with the use of CNNs, to manage a drone swarm scenario in a bi dimensional environment. Given a square map with some targets, the goal is to make the drones able to learn to cooperate between them, trying to track and follow the most valuable targets. We compared a distributed and a centralized approach and verified how the first can outperform the latter in a real world scenario with limited training.", "corpus_id": 211001464, "venue": "", "year": 2020, "author_names": [ "Federico Venturini" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "61154755", "title": "Human Computer Interaction", "abstract": "Contents Foreword Preface to the third edition Preface to the second edition Preface to the first edition Introduction Part 1 Foundations Chapter 1 The human 1.1 Introduction 1.2 Input output channels Design Focus: Getting noticed Design Focus: Where's the middle? 1.3 Human memory Design Focus: Cashing in Design Focus: 7 2 revisited 1.4 Thinking: reasoning and problem solving Design Focus: Human error and false memories 1.5 Emotion 1.6 Individual differences 1.7 Psychology and the design of interactive systems 1.8 Summary Exercises Recommended reading Chapter 2 The computer 2.1 Introduction Design Focus: Numeric keypads 2.2 Text entry devices 2.3 Positioning, pointing and drawing 2.4 Display devices Design Focus: Hermes: a situated display 2.5 Devices for virtual reality and 3D interaction 2.6 Physical controls, sensors and special devices Design Focus: Feeling the road Design Focus: Smart Its making sensors easy 2.7 Paper: printing and scanning Design Focus: Readability of text 2.8 Memory 2.9 Processing and networks Design Focus: The myth of the infinitely fast machine 2.10 Summary Exercises Recommended reading Chapter 3 The interaction 3.1 Introduction 3.2 Models of interaction Design Focus: Video recorder 3.3 Frameworks and HCI 3.4 Ergonomics Design Focus: Industrial interfaces 3.5 Interaction styles Design Focus: Navigation in 3D and 2D 3.6 Elements of the WIMP interface Design Focus: Learning toolbars 3.7 Interactivity 3.8 The context of the interaction Design Focus: Half the picture? 3.9 Experience, engagement and fun 3.10 Summary Exercises Recommended reading Chapter 4 Paradigms 4.1 Introduction 4.2 Paradigms for interaction 4.3 Summary Exercises Recommended reading Part 2 Design process Chapter 5 Interaction design basics 5.1 Introduction 5.2 What is design? 5.3 The process of design 5.4 User focus Design Focus: Cultural probes 5.5 Scenarios 5.6 Navigation design Design Focus: Beware the big button trap Design Focus: Modes 5.7 Screen design and layout Design Focus: Alignment and layout matter Design Focus: Checking screen colors 5.8 Iteration and prototyping 5.9 Summary Exercises Recommended reading Chapter 6 HCI in the software process 6.1 Introduction 6.2 The software life cycle 6.3 Usability engineering 6.4 Iterative design and prototyping Design Focus: Prototyping in practice 6.5 Design rationale 6.6 Summary Exercises Recommended reading Chapter 7 Design rules 7.1 Introduction 7.2 Principles to support usability 7.3 Standards 7.4 Guidelines 7.5 Golden rules and heuristics 7.6 HCI patterns 7.7 Summary Exercises Recommended reading Chapter 8 Implementation support 8.1 Introduction 8.2 Elements of windowing systems 8.3 Programming the application Design Focus: Going with the grain 8.4 Using toolkits Design Focus: Java and AWT 8.5 User interface management systems 8.6 Summary Exercises Recommended reading Chapter 9 Evaluation techniques 9.1 What is evaluation? 9.2 Goals of evaluation 9.3 Evaluation through expert analysis 9.4 Evaluation through user participation 9.5 Choosing an evaluation method 9.6 Summary Exercises Recommended reading Chapter 10 Universal design 10.1 Introduction 10.2 Universal design principles 10.3 Multi modal interaction Design Focus: Designing websites for screen readers Design Focus: Choosing the right kind of speech Design Focus: Apple Newton 10.4 Designing for diversity Design Focus: Mathematics for the blind 10.5 Summary Exercises Recommended reading Chapter 11 User support 11.1 Introduction 11.2 Requirements of user support 11.3 Approaches to user support 11.4 Adaptive help systems Design Focus: It's good to talk help from real people 11.5 Designing user support systems 11.6 Summary Exercises Recommended reading Part 3 Models and theories Chapter 12 Cognitive models 12.1 Introduction 12.2 Goal and task hierarchies Design Focus: GOMS saves money 12.3 Linguistic models 12.4 The challenge of display based systems 12.5 Physical and device models 12.6 Cognitive architectures 12.7 Summary Exercises Recommended reading Chapter 13 Socio organizational issues and stakeholder requirements 13.1 Introduction 13.2 Organizational issues Design Focus: Implementing workflow in Lotus Notes 13.3 Capturing requirements Design Focus: Tomorrow's hospital using participatory design 13.4 Summary Exercises Recommended reading Chapter 14 Communication and collaboration models 14.1 Introduction 14.2 Face to face communication Design Focus: Looking real Avatar Conference 14.3 Conversation 14.4 Text based communication 14.5 Group working 14.6 Summary Exercises Recommended reading Chapter 15 Task analysis 15.1 Introduction 15.2 Differences between task analysis and other techniques 15.3 Task decomposition 15.4 Knowledge based analysis 15.5 Entity relationship based techniques 15.6 Sources of information and data collection 15.7 Uses of task analysis 15.8 Summary Exercises Recommended reading Chapter 16 Dialog notations and design 16.1 What is dialog? 16.2 Dialog design notations 16.3 Diagrammatic notations Design Focus: Using STNs in prototyping Design Focus: Digital watch documentation and analysis 16.4 Textual dialog notations 16.5 Dialog semantics 16.6 Dialog analysis and design 16.7 Summary Exercises Recommended reading Chapter 17 Models of the system 17.1 Introduction 17.2 Standard formalisms 17.3 Interaction models 17.4 Continuous behavior 17.5 Summary Exercises Recommended reading Chapter 18 Modeling rich interaction 18.1 Introduction 18.2 Status event analysis 18.3 Rich contexts 18.4 Low intention and sensor based interaction Design Focus: Designing a car courtesy light 18.5 Summary Exercises Recommended reading Part 4 Outside the box Chapter 19 Groupware 19.1 Introduction 19.2 Groupware systems 19.3 Computer mediated communication Design Focus: SMS in action 19.4 Meeting and decision support systems 19.5 Shared applications and artifacts 19.6 Frameworks for groupware Design Focus: TOWER workspace awareness Exercises Recommended reading Chapter 20 Ubiquitous computing and augmented realities 20.1 Introduction 20.2 Ubiquitous computing applications research Design Focus: Ambient Wood augmenting the physical Design Focus: Classroom 2000/eClass deploying and evaluating ubicomp 20.3 Virtual and augmented reality Design Focus: Shared experience Design Focus: Applications of augmented reality 20.4 Information and data visualization Design Focus: Getting the size right 20.5 Summary Exercises Recommended reading Chapter 21 Hypertext, multimedia and the world wide web 21.1 Introduction 21.2 Understanding hypertext 21.3 Finding things 21.4 Web technology and issues 21.5 Static web content 21.6 Dynamic web content 21.7 Summary Exercises Recommended reading References Index", "corpus_id": 61154755, "venue": "Encyclopedia of Database Systems", "year": 2018, "author_names": [ "Alan J Dix" ], "n_citations": 358, "n_key_citations": 10, "score": 1 }, { "doc_id": "7306130", "title": "Finding Common Ground: A Survey of Capacitive Sensing in Human Computer Interaction", "abstract": "For more than two decades, capacitive sensing has played a prominent role in human computer interaction research. Capacitive sensing has become ubiquitous on mobile, wearable, and stationary devices enabling fundamentally new interaction techniques on, above, and around them. The research community has also enabled human position estimation and whole body gestural interaction in instrumented environments. However, the broad field of capacitive sensing research has become fragmented by different approaches and terminology used across the various domains. This paper strives to unify the field by advocating consistent terminology and proposing a new taxonomy to classify capacitive sensing approaches. Our extensive survey provides an analysis and review of past research and identifies challenges for future work. We aim to create a common understanding within the field of human computer interaction, for researchers and practitioners alike, and to stimulate and facilitate future research in capacitive sensing.", "corpus_id": 7306130, "venue": "CHI", "year": 2017, "author_names": [ "Tobias Alexander Grosse-Puppendahl", "Christian Holz", "Gabe Cohn", "Raphael Wimmer", "Oskar Bechtold", "Steve Hodges", "Matthew S Reynolds", "Joshua R Smith" ], "n_citations": 108, "n_key_citations": 7, "score": 1 }, { "doc_id": "202546350", "title": "User Centered System Design New Perspectives on Human Computer Interaction", "abstract": "HAL is a multi disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinee au depot et a la diffusion de documents scientifiques de niveau recherche, publies ou non, emanant des etablissements d'enseignement et de recherche francais ou etrangers, des laboratoires publics ou prives. User Centered System Design: New Perspectives on Human Computer Interaction Roy D. Pea", "corpus_id": 202546350, "venue": "", "year": 2019, "author_names": [ "Roy D Pea" ], "n_citations": 92, "n_key_citations": 10, "score": 0 }, { "doc_id": "7579559", "title": "Theoretical Importance of Contingency in Human Computer Interaction", "abstract": "A critical determinant of message interactivity is the presence of contingency, that is, the messages we receive are contingent upon the messages we send, leading to a threaded loop of interdependent messages. While this \"conversational ideal\" is easily achieved in face to face and computer mediated communications (CMC) imbuing contingency in human computer interaction (HCI) is a challenge. We propose two interface features interaction history and synchronous chat for increasing perceptions of contingency, and therefore user engagement. We test it with a five condition, between participants experiment (N 110) on a movie search site. Data suggest that interaction history can indeed heighten perceptions of contingency and dialogue, but is perceived as less interactive than chatting. However, the chat function does not appreciably increase perceived contingency or user engagement, both of which are shown to mediate the effects of message interactivity on attitudes toward the site. Theoretical implications for interactivity research and practical implications for interaction design are discussed.", "corpus_id": 7579559, "venue": "Commun. Res.", "year": 2016, "author_names": [ "S Shyam Sundar", "Saraswathi Bellur", "Jeeyun Oh", "Haiyan Jia", "Hyang-Sook Kim" ], "n_citations": 92, "n_key_citations": 9, "score": 0 }, { "doc_id": "209090311", "title": "Being Human: Human Computer Interaction in the Year 2020", "abstract": "The information, findings and opinions contained in this document are those of the authors and do not necessarily reflect the views of Microsoft Research Ltd or Microsoft Corporation. Microsoft Research Ltd and Microsoft Corporation do not guarantee the accuracy of any information presented herein. Personal non commercial use of this publication is permitted. For permission to reprint or republish any portion of this publication for commercial purposes, please contact as above. The question persists and indeed grows whether the computer will make it easier or harder for human beings to know who they really are, to identify their real problems, to respond more fully to beauty, to place adequate value on life, and to make their world safer than it now is.", "corpus_id": 209090311, "venue": "", "year": 2019, "author_names": [ "Richard Harper", "Tom A Rodden", "Yvonne Rogers", "Abigail Sellen" ], "n_citations": 76, "n_key_citations": 8, "score": 1 }, { "doc_id": "46817381", "title": "Review of constraints on vision based gesture recognition for human computer interaction", "abstract": "The ability of computers to recognise hand gestures visually is essential for progress in human computer interaction. Gesture recognition has applications ranging from sign language to medical assistance to virtual reality. However, gesture recognition is extremely challenging not only because of its diverse contexts, multiple interpretations, and spatio temporal variations but also because of the complex non rigid properties of the hand. This study surveys major constraints on vision based gesture recognition occurring in detection and pre processing, representation and feature extraction, and recognition. Current challenges are explored in detail.", "corpus_id": 46817381, "venue": "IET Comput. Vis.", "year": 2018, "author_names": [ "Biplab Ketan Chakraborty", "Debajit Sarma", "Manas Kamal Bhuyan", "Karl F MacDorman" ], "n_citations": 73, "n_key_citations": 1, "score": 0 }, { "doc_id": "140275762", "title": "23 Ways to Nudge: A Review of Technology Mediated Nudging in Human Computer Interaction", "abstract": "Ten years ago, Thaler and Sunstein introduced the notion of nudging to talk about how subtle changes in the 'choice architecture' can alter people's behaviors in predictable ways. This idea was eagerly adopted in HCI and applied in multiple contexts, including health, sustainability and privacy. Despite this, we still lack an understanding of how to design effective technology mediated nudges. In this paper we present a systematic review of the use of nudging in HCI research with the goal of laying out the design space of technology mediated nudging the why (i.e. which cognitive biases do nudges combat) and the how (i.e. what exact mechanisms do nudges employ to incur behavior change) All in all, we found 23 distinct mechanisms of nudging, grouped in 6 categories, and leveraging 15 different cognitive biases. We present these as a framework for technology mediated nudging, and discuss the factors shaping nudges' effectiveness and their ethical implications.", "corpus_id": 140275762, "venue": "CHI", "year": 2019, "author_names": [ "Ana Karina Caraban", "Evangelos Karapanos", "Daniel Goncalves", "Pedro F Campos" ], "n_citations": 71, "n_key_citations": 3, "score": 0 }, { "doc_id": "164750314", "title": "Intelligent Human Computer Interaction Based on Surface EMG Gesture Recognition", "abstract": "Urban intelligence is an emerging concept which guides a series of infrastructure developments in modern smart cities. Human computer interaction (HCI) is the interface between residents and the smart cities, it plays a key role in bridging the gap in applicating information technologies in modern cities. Hand gestures have been widely acknowledged as a promising HCI method, recognition human hand gestures using surface electromyogram (sEMG) is an important research topic in the application of sEMG. However, state of the art signal processing technologies are not robust in feature extraction and pattern recognition with sEMG signals, several technical problems are still yet to be solved. For example, how to maintain the availability of myoelectric control in intermittent use, since pattern recognition qualities are greatly affected by time variability, but it is unavoidable during daily use. How to ensure the reliability and effectiveness of myoelectric control system also important in developing a good human machine interface. In this paper, linear discriminant analysis (LDA) and extreme learning machine (ELM) are implemented in hand gesture recognition system, which is able to reduce the redundant information in sEMG signals and improve recognition efficiency and accuracy. The characteristic map slope (CMS) is extracted by using the feature re extraction method because CMS can strengthen the relationship of features cross time domain and enhance the feasibility of cross time identification. This study is focusing on optimizing the time differences in sEMG pattern recognition, the experimental results are beneficial to reducing the time differences in gesture recognition based on sEMG. The recognition framework proposed in this paper can enhance the generalization ability of HCI in the long term use and it also simplifies the data collection stage before training the device ready for daily use, which is of great significance to improve the time generalization performance of an HCI system.", "corpus_id": 164750314, "venue": "IEEE Access", "year": 2019, "author_names": [ "Jinxian Qi", "Guozhang Jiang", "Gongfa Li", "Ying Sun", "Bo Tao" ], "n_citations": 61, "n_key_citations": 0, "score": 0 }, { "doc_id": "70018801", "title": "Values and Ethics in Human Computer Interaction", "abstract": "", "corpus_id": 70018801, "venue": "Found. Trends Hum. Comput. Interact.", "year": 2018, "author_names": [ "Katie Shilton" ], "n_citations": 59, "n_key_citations": 2, "score": 0 }, { "doc_id": "2491120", "title": "Support vector machines to detect physiological patterns for EEG and EMG based human computer interaction: a review.", "abstract": "Support vector machines (SVMs) are widely used classifiers for detecting physiological patterns in human computer interaction (HCI) Their success is due to their versatility, robustness and large availability of free dedicated toolboxes. Frequently in the literature, insufficient details about the SVM implementation and/or parameters selection are reported, making it impossible to reproduce study analysis and results. In order to perform an optimized classification and report a proper description of the results, it is necessary to have a comprehensive critical overview of the applications of SVM. The aim of this paper is to provide a review of the usage of SVM in the determination of brain and muscle patterns for HCI, by focusing on electroencephalography (EEG) and electromyography (EMG) techniques. In particular, an overview of the basic principles of SVM theory is outlined, together with a description of several relevant literature implementations. Furthermore, details concerning reviewed papers are listed in tables and statistics of SVM use in the literature are presented. Suitability of SVM for HCI is discussed and critical comparisons with other classifiers are reported.", "corpus_id": 2491120, "venue": "Journal of neural engineering", "year": 2017, "author_names": [ "Lucia Rita Quitadamo", "Francesco Cavrini", "Laura Sbernini", "Francesco Riillo", "Luigi Bianchi", "Stefano Seri", "Giovanni Saggio" ], "n_citations": 59, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "211038272", "title": "An improved face recognition algorithm and its application in attendance management system", "abstract": "Abstract Face Recognition is a computer application that is capable of detecting, tracking, identifying or verifying human faces from an image or video captured using a digital camera. Although lot of progress has been made in domain of face detection and recognition for security, identification and attendance purpose, but still there are issues hindering the progress to reach or surpass human level accuracy. These issues are variations in human facial appearance such as; varying lighting condition, noise in face images, scale, pose etc. This research paper presents a new method using Local Binary Pattern (LBP) algorithm combined with advanced image processing techniques such as Contrast Adjustment, Bilateral Filter, Histogram Equalization and Image Blending to address some of the issues hampering face recognition accuracy so as to improve the LBP codes, thus improve the accuracy of the overall face recognition system. Our experiment results show that our method is very accurate, reliable and robust for face recognition system that can be practically implemented in real life environment as an automatic attendance management system.", "corpus_id": 211038272, "venue": "Array", "year": 2020, "author_names": [ "Serign Modou Bah", "Fang Ming" ], "n_citations": 30, "n_key_citations": 2, "score": 0 }, { "doc_id": "216438852", "title": "Real Time Automatic Attendance System for Face Recognition Using Face API and OpenCV", "abstract": "Traditionally, the attendance of students has been a major concern for the colleges and the faculty has to spend a lot of time and is a tedious job to mark attendance manually. Current biometric attendance system is not automatic that's why wastes a lot of time, difficult to maintain and requires a queue for scanning fingerprints to mark their attendance. In Modern era everyone has Smartphone and connected via internet every time. In this paper attendance monitoring will be done through smart phone available with almost all faculty members. Some of popular object detection algorithms are back propagation neural network, region based convolution network (RCNN) faster RCNN, single shot detector. Our unified structure is based on YOLO V3 (You only look once) algorithm for face detection and Microsoft Azure using face API for face recognition (face database) The unique part is camera installed in classroom will take picture twice one at the start and one at the end to ensure students has attended complete class. YOLO V3 will first count the students in an image followed by identifying faces as known and unknown generating spreadsheets separately and an email is send at the end of month to students, parents and faculty. The designed system performs efficient in real time implementation for counting and detection. Our entire system has proven to gather high accuracy in face detection and performance.", "corpus_id": 216438852, "venue": "Wirel. Pers. Commun.", "year": 2020, "author_names": [ "Sikandar Khan", "Adeel Akram", "Nighat Usman" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "219618770", "title": "Student Smart Attendance Through Face Recognition using Machine Learning Algorithm", "abstract": "In today's competitive world, with very less classroom time and increasing working hours, lecturers may need tools that can help them to manage precious class hours efficiently. Instead of focusing on teaching, lecturers are stuck with completing some formal duties, like taking attendance, maintaining the attendance record of each student, etc. Manual attendance marking unnecessarily consumes classroom time, whereas smart attendance through face recognition techniques helps in saving the classroom time of the lecturer. Attendance marking through face recognition can be implied in the classroom by capturing the image of the students in the classroom via the camera installed. Later through the HAAR Cascade algorithm and MTCNN model, face region needs to be taken as interest and the face of each student is bounded through a bounding box, and finally, attendance can be marked into the database based on their presence by using Decision Tree", "corpus_id": 219618770, "venue": "", "year": 2020, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213612891", "title": "Implementing CCTV Based Attendance Taking Support System Using Deep Face Recognition: A Case Study at FPT Polytechnic College", "abstract": "Face recognition (FR) has received considerable attention in the field of security, especially in the use of closed circuit television (CCTV) cameras in security monitoring. Although significant advances in the field of computer vision are made, advanced face recognition systems provide satisfactory performance only in controlled conditions. They deteriorate significantly in the face of real world scenarios such as lighting conditions, motion blur, camera resolution, etc. This article shows how we design, implement, and conduct the empirical comparisons of machine learning open libraries in building attendance taking (AT) support systems using indoor security cameras called ATSS. Our trial system was deployed to record the appearances of 120 students in five classes who study on the third floor of FPT Polytechnic College building. Our design allows for flexible system scaling, and it is not only usable for a school but a generic attendance system with CCTV. The measurement results show that the accuracy is suitable for many different environments.", "corpus_id": 213612891, "venue": "Symmetry", "year": 2020, "author_names": [ "Ngo Tung Son", "Bui Ngoc Anh", "Tran Quy Ban", "L P Chi", "Bui Dinh Chien", "Duong Xuan Hoa", "Le Van Thanh", "Tran Quang Huy", "Le Dinh Duy", "Muhammad Hassan Raza Khan" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "220669176", "title": "Face Recognition based Attendance System using Haar Cascade and Local Binary Pattern Histogram Algorithm", "abstract": "The attendance system is used to track and monitor whether a student attends a class. There are different types of attendance systems like Biometric based, Radiofrequency card based, face recognition based and old paper based attendance system. Out of them all, a Face recognition based attendance system is more secure and time saving. There are several research papers focusing on only the recognition rate of students. This research focusing on a face recognition based attendance system with getting a less false positive rate using a threshold to confidence i.e. euclidean distance value while detecting unknown persons and save their images. Compare to other euclidean distance based algorithms like Eigenfaces and Fisherfaces, Local Binary Pattern Histogram (LBPH) algorithm is better [11] We used Haar cascade for face detection because of their robustness and LBPH algorithm for face recognition. It is robust against monotonic grayscale transformations. Scenarios such as face recognition rate, false positive rate for that and false positive rate with and without using a threshold in detecting unknown persons are considered to evaluate our system. We got face recognition rate of students is 77% and its false positive rate is 28% This system is recognizing students even when students are wearing glasses or grown a beard. Face Recognition of unknown persons is nearly 60% for both with and without applying threshold value. Its false positive rate is 14% and 30% with and without applying threshold respectively.", "corpus_id": 220669176, "venue": "2020 4th International Conference on Trends in Electronics and Informatics (ICOEI)(48184)", "year": 2020, "author_names": [ "Bharath Tej Chinimilli", "Anjali T", "Akhil Kotturi", "Vihas Reddy Kaipu", "Jathin Varma Mandapati" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "231974300", "title": "Development of an Automatic Class Attendance System using CNN based Face Recognition", "abstract": "We are living in the 21st century which is the era of modern technology. Many traditional problems are being solved using new innovative technologies. Taking attendance daily is an indispensable part of educational institutions as well as offices. It is both exhausting and time consuming if done manually. Biometric attendance systems through voice, iris, and fingerprint recognition require complex and expensive hardware support. An auto attendance system using face recognition, which is another biometric trait, can resolve all these problems. This paper represents the development of a face recognition based automatic student attendance system using Convolutional Neural Networks which includes data entry, dataset training, face recognition and attendance entry. The system can detect and recognize multiple person's face from video stream and automatically record daily attendance. The proposed system achieved an average recognition accuracy of about 92 Using this system, daily attendance can be recorded effortlessly avoiding the risk of human error.", "corpus_id": 231974300, "venue": "2020 Emerging Technology in Computing, Communication and Electronics (ETCCE)", "year": 2020, "author_names": [ "Soumitra Chowdhury", "Sudipta Nath", "Ashim Dey", "Annesha Das" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "86397278", "title": "PRESENT: An Android Based Class Attendance Monitoring System Using Face Recognition Technology", "abstract": "Purpose The study aimed to develop an Android Based Class Attendance Monitoring Application using Face Recognition to make attendance checking and monitoring easier and faster. In addition, the system has also integrated the use of SMS technology to notify parents/guardians whenever the students attended a particular subject or class. In addition, the study also intended to evaluate the developed application in terms of functionality, usability, reliability, and portability. Method The researcher utilized the incremental model. After the development phase, the application was evaluated by seventeen (17) faculty members from the College of Engineering and Computing Sciences. A validated evaluation questionnaire was used to rate the level of acceptability of the application based on ISO 9126 software quality and the level of satisfaction for its major features. For the statistical treatment of the data collected, Likert Scale, weighted mean and t test were utilized by the researcher. Results The results revealed that instructors find the existing way of checking attendance as time consuming and a tedious task. Furthermore, the respondents assessed the developed application as moderately acceptable in terms of functionality, reliability and usability while portability was rated as highly acceptable. With regards to the features, the respondents were very satisfied. The t test also revealed that there is a significant difference between the level respondents' level of acceptability on the existing and the proposed system. Conclusion The researcher concluded that the developed application was useful and it can support the needs of the instructors to make attendance checking and monitoring easier, faster, and reliable. Recommendations Due to its acceptable evaluation result, instructors should consider the use of this tool as an alternative to the existing process of checking and monitoring class attendance. The developed system can be enhanced in terms of user design to make it more user friendly. Research Implications Classroom presence is important because this helps students to succeed in their academics when they attend class regularly. With the integration of different technologies such as Android, face recognition and SMS, the traditional way of checking class attendance can be made easier, faster, reliable and secured, thus improving classroom management.", "corpus_id": 86397278, "venue": "ArXiv", "year": 2020, "author_names": [ "Djoanna Marie Vasquez Salac" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "214777785", "title": "Smart Attendance System using OPENCV based on Facial Recognition", "abstract": "Face is the crucial part of the human body that uniquely identifies a person. Using the face characteristics as biometric, the face recognition system can be implemented. The most demanding task in any organization is attendance marking. In traditional attendance system, the students are called out by the teachers and their presence or absence is marked accordingly. However, these traditional techniques are time consuming and tedious. In this project, the Open CV based face recognition approach has been proposed. This model integrates a camera that captures an input image, an algorithm for detecting face from an input image, encoding and identifying the face, marking the attendance in a spreadsheet and converting it into PDF file. The training database is created by training the system with the faces of the authorized students. The cropped images are then stored as a database with respective labels. The features are extracted using LBPH algorithm.", "corpus_id": 214777785, "venue": "", "year": 2020, "author_names": [ "" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "229244802", "title": "A Real time Attendance System Using Deep learning Face Recognition", "abstract": "Attendance check plays an important role in classroom management. Checking attendance by calling names or passing around a sign in sheet is time consuming, and especially the latter is open to easy fraud. This paper presents the detailed implementation of a real time attendance check system based on face recognition and its results. To recognize a student's face, the system must first take and save a picture of the student as a reference in a database. During the attendance check, the web camera takes face pictures for a student to be recognized, and then the computer automatically detects the face and identifies a student name who most likely matches the pictures, and finally an excel file will be updated for attendance record based on the face recognition results. In the system, a pre trained Haar Cascade model is used to detect faces from web camera video. A FaceNet, which has been trained by minimizing the triplet loss, is used to generate a 128dimensional encoding for a face image. The similarity between the encodings of two face images determines whether the two face images coming from the same students. The system has been used for a class, and the results are very satisfactory. A survey has been conducted to investigate the pros and cons of the attendance system on college education management.", "corpus_id": 229244802, "venue": "", "year": 2020, "author_names": [ "Wei Kuang", "Abhijit Baul" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "218565329", "title": "Real Time Attendance System Using Face Recognition Technique", "abstract": "Authentication plays a very important role in computer based communication for having system control. Face recognition has become a very crucial part of biometric verification and finds uses in many applications, e.g. video monitor system, human computer interaction, network security. This paper is about integrating face recognition technology with open source computer vision (OpenCV) algorithm and develop a Attendance System. This software will facilitate the attendance automaton process and enable faculties to enquire student's data by just maintaining a log for clock in and clock out time.", "corpus_id": 218565329, "venue": "2020 International Conference on Power Electronics IoT Applications in Renewable Energy and its Control (PARC)", "year": 2020, "author_names": [ "Mayank Srivastava", "A Muthu Kumar", "Aditya Dixit", "Aman Kumar" ], "n_citations": 6, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "154167513", "title": "The role, organisation and contribution of community enterprise to urban regeneration policy in the UK", "abstract": "This monograph investigates the organisation, constitution and delivery of community based organisations which are normally called community enterprises in the UK. These are organisations which emerge from local communities at the neighbourhood level, work in partnership with the public and private sectors, and provide a range of services to meet social, economic and environmental needs. The main focus of the paper is to explore how these organisations contribute to local regeneration strategies, generate social capital and contribute towards the promotion of civil society in general. The main emphasis is on organisations in England and Wales but comparisons are made with the USA and other countries where relevant literature is available. The key questions to be answered relate to the organisation and management of these bodies; the extent to which they engage with and contribute to local regeneration strategies; and the impact they have particularly in acquiring and managing assets. The diversity of the sector, and the range, scale and level of benefits it can deliver is illustrated through five detailed case studies of community enterprises established at different times, in different geographical locations and with different objectives and funding regimes. But, whilst the UK political economy is moving towards less state intervention and more community self help, the community development corporations in the USA provide an indication of the future direction community enterprises might take in the UK as part of a broad trend towards civic capacity building.", "corpus_id": 154167513, "venue": "", "year": 2012, "author_names": [ "Nick Bailey" ], "n_citations": 109, "n_key_citations": 22, "score": 0 }, { "doc_id": "16067975", "title": "Remaking Place and Securitising Space: Urban Regeneration and the Strategies, Tactics and Practices of Policing in the UK", "abstract": "Urban regeneration programmes in the UK over the past 20 years have increasingly focused on attracting investors, middle class shoppers and visitors by transforming places and creating new consumption spaces. Ensuring that places are safe and are seen to be safe has taken on greater salience as these flows of income are easily disrupted by changing perceptions of fear and the threat of crime. At the same time, new technologies and policing strategies and tactics have been adopted in a number of regeneration areas which seek to establish control over these new urban spaces. Policing space is increasingly about controlling human actions through design, surveillance technologies and codes of conduct and enforcement. Regeneration agencies and the police now work in partnerships to develop their strategies. At its most extreme, this can lead to the creation of zero tolerance, or what Smith terms 'revanchist' measures aimed at particular social groups in an effort to sanitise space in the interests of capital accumulation. This paper, drawing on an examination of regeneration practices and processes in one of the UK's fastest growing urban areas, Reading in Berkshire, assesses policing strategies and tactics in the wake of a major regeneration programme. It documents and discusses the discourses of regeneration that have developed in the town and the ways in which new urban spaces have been secured. It argues that, whilst security concerns have become embedded in institutional discourses and practices, the implementation of security measures has been mediated, in part, by the local socio political relations in and through which they have been developed.", "corpus_id": 16067975, "venue": "", "year": 2003, "author_names": [ "Mike Raco" ], "n_citations": 162, "n_key_citations": 12, "score": 0 }, { "doc_id": "153731994", "title": "Governance and Social Capital in Urban Regeneration: A Comparison between Bristol and Naples", "abstract": "In several countries, urban regeneration programmes have become associated with wider policy changes to the governance and social improvement of local communities. These developments have become central to policy implementation in the UK where regeneration planning attempts to use 'social capital' from local networks and associations in new systems of governance connecting central government agencies, local councils and local voluntary and community groups. This article reports on comparative research aimed at assessing whether the new approaches significantly influence democracy and transparency and, correspondingly, responsiveness to power relations and conflicts, and the needs and interests of the previously excluded and often disadvantaged groups. The analysis derives from a contrast between Bristol, a propitious case for the new governance in the UK, and the Italian city of Naples. Similar and problematic developments are identified in both cases despite the pursuit of a radically different 'dirigiste' strategy by the Naples council. The findings suggest that more autonomous local government and greater civil society participation may still be needed to meet local expectations.", "corpus_id": 153731994, "venue": "", "year": 2006, "author_names": [ "Anna Cento Bull", "Bryn Jones" ], "n_citations": 86, "n_key_citations": 9, "score": 1 }, { "doc_id": "151153953", "title": "Social capital, regeneration and urban policy", "abstract": "This paper seeks to do a number of things. First, to give an account of the emergence of social capital as a very prominent element within policy discourse related to concerns with social exclusion and social inclusion. Second, to explain what is meant by the term social capital and describe its components and the forms it can take at the individual and collective or community level. Third, to show how social capital is linked to neighbourhood renewal goals such as community empowerment and to urban policy goals such as community cohesion. Lastly, to explain why the current Government is so keen on social capital, exploring its links to Third Way ideology, the objective of 'joined up policy' and the broader aim of 'democratic renewal' The paper first appeared as a chapter in Imrie,R. and Raco,M. Eds. (2003) Urban Renaissance? New Labour, Community and Urban Policy. Bristol: The Policy Press. Further details of this and other related publications can be found at: www.policypress.org", "corpus_id": 151153953, "venue": "", "year": 2003, "author_names": [ "Ade Kearns" ], "n_citations": 91, "n_key_citations": 8, "score": 1 }, { "doc_id": "4515685", "title": "Urban regeneration through cultural creativity and social inclusion: Rethinking creative city theory through a Japanese case study", "abstract": "Abstract This paper aims to rethink creative city theory by analyzing urban regeneration processes in Japan through cultural creativity and social inclusion. The impact of Florida's theory has led to the common misperception that cities prosper as people of the creative class, such as artists and gays, gather. However, attracting people of the creative class does not automatically make a creative city. Empirical analyses of Kanazawa City, clarify that the creative city needs a 'culture based production system' a well balanced system of cultural production and cultural consumption that takes advantage of accumulated cultural capital. This paper also examines Osaka City, where creative city policies failed to produce adequate results because they did not take root as a comprehensive urban strategy. However, in spite of these failures, a lively and inclusive grassroots movement has emerged around the creative city. This movement brings Osaka towards being a socially inclusive creative city.", "corpus_id": 4515685, "venue": "", "year": 2010, "author_names": [ "Masayuki Sasaki" ], "n_citations": 142, "n_key_citations": 7, "score": 1 }, { "doc_id": "153849832", "title": "Growing food to grow cities? The potential of agriculture foreconomic and community development in the urban United States", "abstract": "Agriculture has become a focus of planning for urban regeneration in the United States. However, to make agriculture an impactful part of urban community and economic development rather than a passing fad it is vital to identify its most effective forms. This paper reports on field research in six cities in the United States where municipalities, nonprofit organizations and residents are deploying farming and gardening for diverse economic development objectives. Our findings suggest that despite expectations that urban agriculture will attract capital, create jobs and tax ratables and increase property values in preparation for 'higher value' development, its greatest potential is in social enterprise, supplementing incomes, developing human and social capital and promoting food security.", "corpus_id": 153849832, "venue": "", "year": 2014, "author_names": [ "Domenic Vitiello", "Laura Wolf-Powers" ], "n_citations": 71, "n_key_citations": 6, "score": 0 }, { "doc_id": "128367874", "title": "Remaking London: Decline and Regeneration in Urban Culture", "abstract": "Between the slum clearances of the early twentieth century and debates about the post Olympic city, the drive to 'regenerate' London has intensified. Yet today, with a focus on increasing land values, regeneration schemes purporting to foster diverse and creative new neighbourhoods typically displace precisely the qualities, activities and communities they claim to support. In Remaking London Ben Campkin provides a lucid and stimulating historical account of urban regeneration, exploring how decline and renewal have been imagined and realised at different scales. Focusing on present day regeneration areas that have been key to the capital's modern identity, Campkin explores how these places have been stigmatised through identification with material degradation and spatial and social disorder. Drawing on diverse sources including journalism, photography, cinema, theatre, architectural design, advertising and television he illuminates how ideas of decline drive urban change. Richly illustrated and engagingly written, Remaking London is both a compelling account of contested sites from the capital's recent history and a powerful critique of the contradictions of contemporary regeneration. \"An important and much needed corrective, full of fascinating insights, which exposes the myths of regeneration\" Anna Minton, author of Ground Control: Fear and Happiness in the Twenty First Century City", "corpus_id": 128367874, "venue": "", "year": 2013, "author_names": [ "Ben Campkin" ], "n_citations": 46, "n_key_citations": 6, "score": 0 }, { "doc_id": "154420646", "title": "Area based Initiatives And Their Work in Bonding, Bridging and Linking Social Capital", "abstract": "Abstract In this article, we provide a conceptual and argumentative framework for studying how Area based Initiatives (ABIs) can facilitate contact between networks in deprived neighbourhoods and external forms of power (linking social capital) These relations provide the residents and other members of civil society with crucial access to leveraging resources, ideas and information. Although few studies on linking social capital have been carried out in relation to urban regeneration, there is empirical evidence that suggests that it can play a positive role in establishing trust and relations between civil society and a municipality. We set out with a review of how social capital literature has been applied in an urban context, and then demonstrate empirical examples from Denmark of how, in different contexts (village, town and city) ABIs have facilitated processes that generated different forms of social capital (bridging, bonding and linking) The article concludes that ABIs contribute to creating linking social capital, but the extent of the contribution depends on the level of bonding and bridging social capital in the area. We argue that public planners as well as evaluators of the ABIs should increase their awareness about the potentials of an ABI to create linking social capital in deprived neighbourhoods.", "corpus_id": 154420646, "venue": "", "year": 2015, "author_names": [ "Annika Agger", "Jesper Ole Jensen" ], "n_citations": 43, "n_key_citations": 6, "score": 0 }, { "doc_id": "153616163", "title": "Leadership, Power and Multisector Urban Regeneration Partnerships", "abstract": "Multisector partnerships have become the central tenet of contemporary urban regeneration policy facilitating a new form of local participative governance. Consequently, neighbourhood renewal and the importance of 'people' and 'places' have encouraged the emergence of a new form of 'community leader' who is more in touch with the problems of local disadvantaged groups. This paper explores the issue of leadership within multisectoral urban regeneration partnerships, focusing on the formation of social capital, power relations and partnership synergy. Conclusions point to the synergistic and social capital benefits of partnerships and the role played by urban leadership in generating a collaborative network capable of achieving more than performance targets.", "corpus_id": 153616163, "venue": "", "year": 2006, "author_names": [ "Lesley Hemphill", "Stanley McGreal", "J N Berry", "Siobhan Watson" ], "n_citations": 66, "n_key_citations": 4, "score": 0 }, { "doc_id": "150639508", "title": "Capitalising on Culture: an Evaluation of Culture led Urban Regeneration Policy", "abstract": "Municipal authorities throughout Western Europe are attempting to drive regeneration of their urban centres through policies designed to attract inward investment and tourism. In an attempt to woo these outside economic agents in, a variety of cultural consumption oriented policies have been developed and marketed. These include investment in hard cultural infrastructure such as museums or art galleries, and in less physical aspects such as holding events like the European Capital of Culture. A polemical debate surrounds this use of cultural policy with a clearly economic agenda. This paper gives a brief synopsis of some culture led regeneration models, addresses the validity of arguments from both sides of the debate, and in the year that Cork 2005 celebrates its year as European Capital of Culture, looks at how the event brings the battle out into the public domain. KeywordsCultural tourism, place marketing, social inclusion, urban", "corpus_id": 150639508, "venue": "", "year": 2005, "author_names": [ "L F Binns" ], "n_citations": 34, "n_key_citations": 3, "score": 0 } ]

[ { "doc_id": "111512424", "title": "Workforce Diversity Becoming a Woman Entrepreneur in the Water Services Industry (PDF)", "abstract": "", "corpus_id": 111512424, "venue": "", "year": 2007, "author_names": [ "Kristin Darr-Bornstein", "Marsha Miller" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "167998611", "title": "The Impact of the Diversity Management on the Workforce Composition and Financial Performance", "abstract": "Abstract Even though Korea has long experienced single race/ethnic demographic composition, the recent rapid change of demographic diversity will have powerful impact on the HRM(human resource management) in the future. In this research we find the influence of the diversity friendly HRM to the human resource practices using the data of WPS(Workplace Panel Survey) of Korea Labor Institute. If the training for women is high, the density of the woman increased. The performance pay is introduced, then the density of the disabled person would be increased. The foreign workforce was also increased if the company used more selection methods. But the HRM practices such as talent management, yearly based compensation systems, and appraisal program which has a tendency to reduce diversity have no significant influence to the financial performance. This findings imply that the management team should introduce the effective HRM systems to manage diverse human resources after considering the organizational culture and business environment. This research intends to find the diversity friendly HRM practices and hope to help the efforts of the management team to find effective management methods.Key words Diversity management, Diversity friendly HRM, Training for women, Performance based compensation, Selection methods, Firm performance", "corpus_id": 167998611, "venue": "", "year": 2011, "author_names": [ "Sang Hyeon Sung", "Dae-Lyong Kim" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "134305518", "title": "Gender diversity on the boards of listed firms in China and India", "abstract": "Phase I finds that board gender diversity is significantly related to women's political and economic empowerment at national level. Phase II finds a significant negative relationship between state ownership and board gender diversity in China (2009 and 2015) In India, a positive relationship between state ownership and board gender diversity in India in 2009 had disappeared by 2015, following the 2013 introduction of a one woman director rule for all listed companies. A positive relationship between female workforce participation and board gender diversity was found in both countries. Phase III examines individual beliefs and attitudes regarding board gender diversity.", "corpus_id": 134305518, "venue": "", "year": 2019, "author_names": [ "Alice de Jonge" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "69441400", "title": "An Exploration of the Cybersecurity Workforce Shortage", "abstract": "There isacolossalcybersecurityworkforceshortage.Globalestimatesstate there areover1millionunfilled cyber security jobs.Aseveryonebecomes increasingly hyper connectedandcybercrimeintensifies inbothscaleandcomplexity, theneed forexpertsinthefieldisdire.Innovativeorganizationsarerealizingthattheyneed to tap into new talent pools of minorities and woman that have historically been overlooked.Thisarticleexploresnatureofthisthisworkforceshortageandhowto findnewsourcesoftalent. KEyWoRdS Cybersecurity, Diversity, Inclusion, Minorities in Cybersecurity, Minorities in STEM, Women in STEM International Journal of Hyperconnectivity and the Internet of Things Volume 2 Issue 1 January June 2018", "corpus_id": 69441400, "venue": "IoT 2018", "year": 2018, "author_names": [ "Darrell Norman Burrell" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "154488315", "title": "Communicating as a Woman in the Information Technology (IT) World", "abstract": "Effective communication can be a challenge for any individual in a homogenous workplace, and it is especially more difficult when there is diversity of gender, age, ethnicity, language, culture, and other such dimensions. With increased diversity of gender in the modern workplace, communication lines may get crossed causing miscommunications between the two sexes. These differences create biases that affect the way women are seen and perceived in the industry. As such, this paper focuses on the status of women in the information technology (IT) industry in the United States by providing the latest statistics, discussing some of the existing challenges, and offering recommendations for professionals in this industry. Having a diverse workforce can provide a competitive advantage for firms, and having women at all levels of the hierarchy in the workplace can attract more diverse professionals. Suggestions and recommendations for the creation of a fair and diverse workplace for IT firms are provided.", "corpus_id": 154488315, "venue": "", "year": 2014, "author_names": [ "Omar Wee-Ellis", "Angelique Dorsett", "C A G M van Montfort", "Nereida Valdes", "Bahaudin G Mujtaba" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "169082559", "title": "Woman and work in rural Assam: pattern and determinants", "abstract": "The interrelationship between women and work has been affected by the diversity of socio economic institutions. The impact of economic transformation on work participation is likely to be mediated through changing gender relations as well. This article attempts to look at the trend as well as the nature of job availability along with the underlying causation of female workforce participation in the rural areas of Assam. Regarding regional variations in female work participation, women in the eastern plains and districts with more tea plantations report higher levels of participation in work. In the article, instrumental variable probit estimation has been used to identify various household and individual characteristics that determine rural female workforce participation in the state. This analysis suggests that female workforce participation is the result of a complex interplay of various individual, household, social and economic factors. Further, the analysis reflects that the higher level of education and land possession are positive factors that propel female workforce participation in the rural areas. However, the presence of the children in the household obliterates women's way into the labour market of rural areas.", "corpus_id": 169082559, "venue": "", "year": 2018, "author_names": [ "Krishna Surjya Das", "Deepak K Mishra" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "49564464", "title": "Issues in Gender Diversity and Equality in the UK", "abstract": "There has been a significant increase in the number of initiatives to raise awareness of diversity related challenges in technology worldwide within the past decade. Multiple organizations now emphasize a need for a close to 50% 50% male to female workforce distribution. Example of proposed activities include introducing quotas for women on board positions, promoting equal opportunities for employment in STEM (Science, Technology, Engineering, Mathematics) jobs and creating a woman friendly work environment. However, despite these efforts, the growth of number of women working in STEM is still slow. To understand the impact of various initiatives and how they influence the work environment in universities in the UK, we conducted a survey to record responses from multiple women groups, so that we can identify the issues that they have been facing. This paper presents the insights drawn from the survey, along with recommendations for STEM and computing fields in order to increase female numbers in their programs. The survey presents qualitative measures of initiatives addressing the gender gap in the UK. The results show a clear need for prominent role models, mentoring, and promoting engagement of women in STEM subjects from an early age.", "corpus_id": 49564464, "venue": "2018 IEEE/ACM 1st International Workshop on Gender Equality in Software Engineering (GE)", "year": 2018, "author_names": [ "Amel Bennaceur", "Ampaeli Cano", "Lilia Georgieva", "Maria Kiran", "Maria Salama", "Poonam Yadav" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "8552150", "title": "Now Hiring! Empirically Testing a Three Step Intervention to Increase Faculty Gender Diversity in STEM", "abstract": "Workforce homogeneity limits creativity, discovery, and job satisfaction; nonetheless, the vast majority of university faculty in science, technology, engineering, and mathematics (STEM) fields are men. We conducted a randomized and controlled three step faculty search intervention based in self determination theory aimed at increasing the number of women faculty in STEM at one US university where increasing diversity had historically proved elusive. Results show that the numbers of women candidates considered for and offered tenure track positions were significantly higher in the intervention groups compared with those in controls. Searches in the intervention were 6.3 times more likely to make an offer to a woman candidate, and women who were made an offer were 5.8 times more likely to accept the offer from an intervention search. Although the focus was on increasing women faculty within STEM, the intervention can be adapted to other scientific and academic communities to advance diversity along any dimension.", "corpus_id": 8552150, "venue": "Bioscience", "year": 2015, "author_names": [ "Jessi L Smith", "Ian M Handley", "Alexander V Zale", "Sara Rushing", "Martha A Potvin" ], "n_citations": 56, "n_key_citations": 4, "score": 0 }, { "doc_id": "41869751", "title": "Ensuring a Diverse Physician Workforce: Progress but More to Be Done.", "abstract": "In their study of the diversity of graduate medical education in the United States, Deville and colleagues 1 call attention yet again to the continued underrepresentation of women and minority groups in medicine compared with the population as a whole. Among the many interesting findings, I was most struck that among all specialties obstetrics and gynecology had the greatest proportion of women trainees in 2012 (82.4% the highest percentage of black trainees (10.3% and one of the highest percentages of Hispanic trainees (8.7% All these percentages reflect substantial increases over the past 3 decades. The proportion of practicing female obstetrician gynecologists has steadily increased from around 20% in the early 1990s to nearly half by 2010. As a black woman and a specialist in maternal fetal medicine I am thankful that growing numbers of physicians from underrepresented minority groups are being trained in wo men's health care, a field in which health disparities are important public health issues. Maternal mortality, although low overall in the United States, is increasing. 2 Black women have a 3 times greater risk of death in pregnancy than non Hispanic white women; in addition, black women have higher rates of hypertension, obesity, and diabetes mellitus in pregnancy than non Hispanic whites. Black infants are more likely to die in the first year of life, often because of extreme prema turity. In 2013, 16.3% of live births to black women were pre term (born before 37 weeks gestation) compared with 11.3% of births to Hispanic women and 10.2% of births to non Hispanic white women. 3 Racial and ethnic disparities have been documented in other obstetrical outcomes, such as rates of pre natal care, cesarean delivery, and vaginal lacerations. 4 Although numerous factors specific to the patient, the health care system, and the societal environment likely account for some of these differences, factors related to physicians have been implicated as well. Providing culturally competent care is as important in obstetrics and gynecology when women interact with the health care system at one of the most vulnerable times in their lives as in any other specialty. Not only are minority physicians more likely to work in underserved areas when their training is complete, but the quality of health care may be better when clinicians and patients are of the same race or ethnicity. The findings also raise questions, however. For example, it is not clear what makes obstetrics and gynecology so attractive to black and", "corpus_id": 41869751, "venue": "JAMA internal medicine", "year": 2015, "author_names": [ "Laura E Riley" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "156133658", "title": "Woman a Key Player", "abstract": "It is the time to understand the power of a diverse workforce built on merit and its ability to take a position in an organization. We need to believe in ability, willingness and enthusiasm as important attributes of team member. Women constitute 30% 35% of total workforce. Women CEOs are becoming the new face of India Inc. However, only 10% of corporate women reach senior management levels and less than 4% becomes CEO. Today many companies are taking steps to implement gender diversity and following equal opportunities for all. Empowering women and achieving gender equality will require an intentional action, deliberate politics and more importantly the mindset of working class.", "corpus_id": 156133658, "venue": "", "year": 2016, "author_names": [ "Nisha Dewan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "56177594", "title": "Pseudo LiDAR From Visual Depth Estimation: Bridging the Gap in 3D Object Detection for Autonomous Driving", "abstract": "3D object detection is an essential task in autonomous driving. Recent techniques excel with highly accurate detection rates, provided the 3D input data is obtained from precise but expensive LiDAR technology. Approaches based on cheaper monocular or stereo imagery data have, until now, resulted in drastically lower accuracies a gap that is commonly attributed to poor image based depth estimation. However, in this paper we argue that it is not the quality of the data but its representation that accounts for the majority of the difference. Taking the inner workings of convolutional neural networks into consideration, we propose to convert image based depth maps to pseudo LiDAR representations essentially mimicking the LiDAR signal. With this representation we can apply different existing LiDAR based detection algorithms. On the popular KITTI benchmark, our approach achieves impressive improvements over the existing state of the art in image based performance raising the detection accuracy of objects within the 30m range from the previous state of the art of 22% to an unprecedented 74% At the time of submission our algorithm holds the highest entry on the KITTI 3D object detection leaderboard for stereo image based approaches.", "corpus_id": 56177594, "venue": "2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)", "year": 2019, "author_names": [ "Yan Wang", "Wei-Lun Chao", "Divyansh Garg", "Bharath Hariharan", "Mark E Campbell", "Kilian Q Weinberger" ], "n_citations": 301, "n_key_citations": 50, "score": 1 }, { "doc_id": "202091088", "title": "Recent development of automotive LiDAR technology, industry and trends", "abstract": "Autonomous driving technology is one of the core technologies for intelligent connected vehicles. For autonomous vehicles with L3 and higher level capabilities, LiDAR is indispensable. Based on the substantial industry information of the sector and technical development, this paper systematically sorts through and analyzes a variety of LiDAR sensor technologies, the global automotive LiDAR industry ecosystem, major startups, the state of the art products and so on. In addition, this paper provides in depth research of the automotive LiDAR development trends and judgment on the prospects of automotive LiDAR integrated with the intelligent connectivity industry development trends. This paper considers that the LiDAR sensor has become a bottleneck hindering autonomous vehicles deployment, and predicts the future development paths of automotive LiDAR.", "corpus_id": 202091088, "venue": "International Conference on Digital Image Processing", "year": 2019, "author_names": [ "Fuquan Zhao", "Hao Jiang", "Zongwei Liu" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "210116059", "title": "Analysis of a modular SPAD based direct time of flight depth sensor architecture for wide dynamic range scenes in a LiDAR system", "abstract": "architecture for wide dynamic range scenes in a LiDAR system Preethi Padmanabhan1, Chao Zhang2 and Edoardo Charbon1,2 1. Advanced Quantum Architecture Laboratory (AQUA) EPFL, Neuchatel, Switzerland 2. Applied Quantum Architecture Laboratory (AQUA) Delft University of Technology, The Netherlands Email: preethi.padmanabhan@epfl.ch, c.zhang 10@tudelft.nl, edoardo.charbon@epfl.ch Phone: +41216954413, +31626585961, +41216954409", "corpus_id": 210116059, "venue": "", "year": 2019, "author_names": [ "Preethi Padmanabhan", "Chong Zhang", "Edoardo Charbon" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "52020744", "title": "Mixed Design of SPAD Array Based TOF for Depth Camera and Unmanned Vehicle Applications", "abstract": "Depends on the increasing requirements of unmanned vehicle mobile Lidar systems, this paper presents a system design based on pulsed TOF depth image cameras. The design has a detection range of 300m and detecting resolution of 1.5cm. Pixels are made of SPAD. Meanwhile, innovative structure of multi pixel sharing TDC is proposed, chip area is greatly reduced and the fill factor of light sensing surface area is optimized. The TCSPC module with the functionalities of receiving each photon, measuring photon flight time and processing depth information is also included in the chip design. Based on 0.13mm CIS CMOS technology, the entire design indicates high integration with low power and fast response features.", "corpus_id": 52020744, "venue": "2018 15th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD)", "year": 2018, "author_names": [ "Weiwei Shi", "An Pan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "207810189", "title": "Real time 3D reconstruction from single photon lidar data using plug and play point cloud denoisers", "abstract": "Single photon lidar has emerged as a prime candidate technology for depth imaging through challenging environments. Until now, a major limitation has been the significant amount of time required for the analysis of the recorded data. Here we show a new computational framework for real time three dimensional (3D) scene reconstruction from single photon data. By combining statistical models with highly scalable computational tools from the computer graphics community, we demonstrate 3D reconstruction of complex outdoor scenes with processing times of the order of 20 ms, where the lidar data was acquired in broad daylight from distances up to 320 metres. The proposed method can handle an unknown number of surfaces in each pixel, allowing for target detection and imaging through cluttered scenes. This enables robust, real time target reconstruction of complex moving scenes, paving the way for single photon lidar at video rates for practical 3D imaging applications. The use of single photon data has been limited by time consuming reconstruction algorithms. Here, the authors combine statistical models and computational tools known from computer graphics and show real time reconstruction of moving scenes.", "corpus_id": 207810189, "venue": "Nature Communications", "year": 2019, "author_names": [ "Julian Tachella", "Yoann Altmann", "Nicolas Mellado", "Aongus Mccarthy", "Rachael Tobin", "Gerald S Buller", "Jean-Yves Tourneret", "Stephen Mclaughlin" ], "n_citations": 51, "n_key_citations": 4, "score": 0 }, { "doc_id": "128133554", "title": "Design and evaluation of a full wave surface and bottom detection algorithm for LiDAR bathymetry of very shallow waters", "abstract": "Abstract Airborne Laser Bathymetry (ALB) is an attractive technology for the measurement of shallow water bodies because of the high acquisition rate and high point densities that can be achieved. Of special interest is the application of ALB in non navigable areas where the only alternatives are conventional terrestrial surveying by wading with a pole, multi media photogrammetry, or spectrally based depth retrieval. The challenge for laser based approaches in such very shallow waters 532 nm sensor. The accuracy of the algorithm is cross validated against reference measurements obtained from terrestrial survey with a total station and shows negligible bias and virtually no depth dependence for the experimental dataset.", "corpus_id": 128133554, "venue": "ISPRS Journal of Photogrammetry and Remote Sensing", "year": 2019, "author_names": [ "Roland Schwarz", "Gottfried Mandlburger", "Martin Pfennigbauer", "Norbert Pfeifer" ], "n_citations": 21, "n_key_citations": 0, "score": 1 }, { "doc_id": "155100322", "title": "Real time 3D reconstruction of complex scenes using single photon lidar: when image processing meets computer graphics", "abstract": "Single photon lidar has emerged as a prime candidate technology for depth imaging in extreme scenarios, such as through fog, clutter or in underwater environments. Until now, a major challenge has been the rapid reconstruction of single photon data, to permit the real time analysis of complex moving scenes. Here we show a new computational framework for real time three dimensional (3D) reconstruction of complex scenes from singlephoton data, taking full advantage of the rapid developments in single photon avalanche diode detector array technology. By combining statistical models and highly scalable computational tools from the computer graphics community, we demonstrate 3D reconstruction of multiple surface scenes with processing times reduced by a factor of up to 10 compared with state of the art algorithms. This has enabled robust, real time target reconstruction of complex scenes, paving the way for single photon lidar at video rates for practical 3D imaging applications, including automotive, defence and underwater imaging.", "corpus_id": 155100322, "venue": "", "year": 2019, "author_names": [ "Julian Tachella", "Yoann Altmann", "Nicolas Mellado", "Aongus Mccarthy", "Rachael Tobin", "Gerald S Buller", "Jean-Yves Tourneret", "Stephen Mclaughlin" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "213251599", "title": "Deep learning optimized single pixel LiDAR", "abstract": "Interest in autonomous transport has led to a demand for 3D imaging technologies capable of resolving fine details at long range. Light detection and ranging (LiDAR) systems have become a key technology in this area, with depth information typically gained through time of flight photon counting measurements of a scanned laser spot. Single pixel imaging methods offer an alternative approach to spot scanning, which allows a choice of sampling basis. In this work, we present a prototype LiDAR system, which compressively samples the scene using a deep learning optimized sampling basis and reconstruction algorithms. We demonstrate that this approach improves scene reconstruction quality compared to an orthogonal sampling method, with reflectivity and depth accuracy improvements of 57% and 16% respectively, for one frame per second acquisition rates. This method may pave the way for improved scan free LiDAR systems for driverless cars and for fully optimized sampling to decision making pipelines.", "corpus_id": 213251599, "venue": "", "year": 2019, "author_names": [ "Neal Radwell", "Steven D Johnson", "Matthew P Edgar", "Catherine F Higham", "Roderick Murray-Smith", "Miles J Padgett" ], "n_citations": 11, "n_key_citations": 1, "score": 0 }, { "doc_id": "210692595", "title": "Barrier Detection and Tracking from Parameterized Lidar Data", "abstract": "Barrier detection and tracking is a key technique in augmented reality(AR) By adding up the sense of objects, users are able to safely observe or avoid moving objects in the view. With the development of 3D Lidar technology, the acquisition of 3D points in the scene is getting more efficient. In comparison with image data, the 3D points from Lidar contain reliable depth information in a large range. However, processing unstructured point cloud is less efficient for augmented reality applications. By noticing the structure of the 3D points captured from Lidar, we propose to parameterize the data from Lidar. In this way, we are able to reuse detection and tracking methods from images for a simple solution in barrier detection and tracking from Lidar data. We test our method by using the Lidar data captured from an unmanned ship. The results show that our method can quickly detect the barriers with bounding boxes, indicating the distance, direction and size of the barrier in the scene.", "corpus_id": 210692595, "venue": "2019 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR Adjunct)", "year": 2019, "author_names": [ "Wen Xing", "Lifeng Zhu", "Aiguo Song" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "126124425", "title": "Long range depth imaging using a single photon detector array and non local data fusion", "abstract": "The ability to measure and record high resolution depth images at long stand off distances is important for a wide range of applications, including connected and automotive vehicles, defense and security, and agriculture and mining. In LIDAR (light detection and ranging) applications, single photon sensitive detection is an emerging approach, offering high sensitivity to light and picosecond temporal resolution, and consequently excellent surface to surface resolution. The use of large format CMOS (complementary metal oxide semiconductor) single photon detector arrays provides high spatial resolution and allows the timing information to be acquired simultaneously across many pixels. In this work, we combine state of the art single photon detector array technology with non local data fusion to generate high resolution three dimensional depth information of long range targets. The system is based on a visible pulsed illumination system at a wavelength of 670 nm and a 240 x 320 array sensor, achieving sub centimeter precision in all three spatial dimensions at a distance of 150 meters. The non local data fusion combines information from an optical image with sparse sampling of the single photon array data, providing accurate depth information at low signature regions of the target.", "corpus_id": 126124425, "venue": "Scientific Reports", "year": 2019, "author_names": [ "Susan Chan", "Abderrahim Halimi", "Fengzheng Zhu", "Istvan Gyongy", "Robert K Henderson", "Richard W Bowman", "Stephen Mclaughlin", "Gerald S Buller", "Jonathan Leach" ], "n_citations": 25, "n_key_citations": 3, "score": 0 } ]

[ { "doc_id": "213716002", "title": "A dual band metamaterial absorber for graphene surface plasmon resonance at terahertz frequency", "abstract": "Abstract In this paper, we present a dual band metamaterial absorber for graphene surface plasmon resonance at terahertz frequency. We use the finite difference time domain (FDTD) method to study the absorption characteristics of the homocentric graphene ring and disk nanostructure. These simulation results show that the change of the geometrical parameters and the substrate thickness of the nanostructure can change the absorption characteristics and the emergence of dual band absorption peaks. Moreover, we study the field distribution of nanodisks with different radius in detail. By changing the Fermi level of graphene, the wavelength of their absorption peaks can be adjusted flexibly. In addition, the proposed dual band absorber also shows a good angle tolerance for both TE and TM polarizations. By calculation the surface filled water (n 1.332) and 25% aqueous glucose solution (n 1.372) for the metamaterial absorber, the sensitivities of mode I and mode II are 5.0 mm/RIU and 15.0 mm/RIU. These research results will have broad application prospects for sensing and spatial light modulators.", "corpus_id": 213716002, "venue": "", "year": 2020, "author_names": [ "Chunlian Cen", "Yubin Zhang", "Xifang Chen", "Haibin Yang", "Zao Yi", "Weitang Yao", "Yongjian Tang", "Yougen Yi", "Junqiao Wang", "Pinghui Wu" ], "n_citations": 76, "n_key_citations": 0, "score": 1 }, { "doc_id": "214177317", "title": "Triple band perfect metamaterial absorber with good operating angle polarization tolerance based on split ring arrays", "abstract": "Abstract In this paper, a triple band perfect metamaterial absorber based on Cu dielectric Cu triple layer nanostructure is reported. The top metal film structure consists of a ring and four pairs of capacitor plates, which has a frequency selection effect, allowing the absorber to resonate in the near infrared range. Theoretical study shows that the absorption of the three absorption peaks (872.54 nm, 1008.69 nm and 1138.62 nm) are 87.1% 99.9% and 99.6% respectively. The average absorption is 95.53% including two perfect absorption peaks. Changing the structural parameters can affect its absorption peaks and resonant wavelengths. At the same time, due to the high symmetry of the absorber, it is not sensitive to the polarization angle and incident angle. Whether in the TE mode or the TM mode, the absorber at a wide incident angle (0 60deg) also exhibits good operating angle polarization tolerance. Therefore, the perfect metamaterial absorber we designed can be widely used in sensing.", "corpus_id": 214177317, "venue": "", "year": 2020, "author_names": [ "Yingying Wang", "Zeqiang Chen", "Danyang Xu", "Zao Yi", "Xifang Chen", "Jian Chen", "Yongjian Tang", "Pinghui Wu", "Gongfa Li", "Yougen Yi" ], "n_citations": 63, "n_key_citations": 0, "score": 0 }, { "doc_id": "214067935", "title": "Design of a dual band terahertz metamaterial absorber using two identical square patches for sensing application", "abstract": "A dual band terahertz metamaterial absorber composed of two identical square metallic patches and an insulating medium layer on top of a continuous metallic ground is demonstrated. Two resonance peaks (labeled A and B) with near 100% absorbance are obtained, of which peak A derived from the localized resonance of the two square patches has a line width of 0.2571 THz and quality factor of 6.9156, while peak B which resulted from the hybrid coupling of the localized resonance of the two square patches and surface lattice resonance of the device has a very narrow line width of 0.0083 THz and large quality factor of 296.2771. Narrow line width and large quality factor have important prospects in sensing application. Based on this, the sensing performance of the device is explored; it is revealed that peak B exhibits highly sensitive sensing ability (including a sensing sensitivity of 1.9010 THz per RIU and figure of merit of 229.04) in terms of the surrounding index. In addition, the influence of structural parameters on the absorption performance is discussed to further verify the formation mechanism of these two absorption peaks.", "corpus_id": 214067935, "venue": "", "year": 2020, "author_names": [ "Ben-Xin Wang", "Yuanhao He", "Pengcheng Lou", "Wenhui Xing" ], "n_citations": 72, "n_key_citations": 0, "score": 1 }, { "doc_id": "210950610", "title": "A Tunable Triple Band Near Infrared Metamaterial Absorber Based on Au Nano Cuboids Array", "abstract": "In this article, we present a design for a triple band tunable metamaterial absorber with an Au nano cuboids array, and undertake numerical research about its optical properties and local electromagnetic field enhancement. The proposed structure is investigated by the finite difference time domain (FDTD) method, and we find that it has triple band tunable perfect absorption peaks in the near infrared band (1000 2500 nm) We investigate some of structure parameters that influence the fields of surface plasmons (SP) resonances of the nano array structure. By adjusting the relevant structural parameters, we can accomplish the regulation of the surface plasmons resonance (SPR) peaks. In addition, the triple band resonant wavelength of the absorber has good operational angle polarization tolerance. We believe that the excellent properties of our designed absorber have promising applications in plasma enhanced photovoltaic, optical absorption switching and infrared modulator optical communication.", "corpus_id": 210950610, "venue": "Nanomaterials", "year": 2020, "author_names": [ "Feng Qin", "Zeqiang Chen", "Xifang Chen", "Zao Yi", "Weitang Yao", "Tao Duan", "Pinghui Wu", "Hua Yang", "Gongfa Li", "Yougen Yi" ], "n_citations": 59, "n_key_citations": 0, "score": 1 }, { "doc_id": "213032786", "title": "Dual band tunable terahertz perfect metamaterial absorber based on strontium titanate (STO) resonator structure", "abstract": "Abstract A temperature controlled dual band terahertz perfect metamaterial absorber (MMA) based on strontium titanate (STO) resonator structure is proposed and investigated numerically. This MMA is a simple periodic array, consisting of two stacked square shaped STO resonator structures and a copper substrate. Numerical simulation results indicate that the reflectance of the proposed MMA under room temperature T 300 K is decreased to 2.1% and 0.2% at 0.114 THz and 0.181 THz, and corresponding absorbance is up to 97.9% and 99.8 respectively. Further results show that the designed MMA is polarization insensitive, and wide angle to the incident waves for both transverse electric (TE) and transverse magnetic (TM) modes. The simulated distributions of electromagnetic (EM) fields and power flow reveal that the observed high level absorption is originated from the excitations of the fundamental dipole modes. Furthermore, the absorption property can be changed by varying structural parameters of the MMA and external temperature. Due to its excellent performance, the designed tunable MMA may find useful and important applications such as thermal emitter, bolometric imaging, energy harvesting, and sensing in terahertz region.", "corpus_id": 213032786, "venue": "", "year": 2020, "author_names": [ "Wangyang Li", "Yongzhi Cheng" ], "n_citations": 53, "n_key_citations": 1, "score": 0 }, { "doc_id": "211216123", "title": "A Broadband Tunable Terahertz Metamaterial Absorber Based on Single Layer Complementary Gammadion Shaped Graphene", "abstract": "We present a simple design of a broadband tunable metamaterial absorber (MMA) in the terahertz (THz) region, which consists of a single layer complementary gammadion shaped (CGS) graphene sheet and a polydimethylsiloxane (PDMS) dielectric substrate placed on a continuous metal film. The Fermi energy level (Ef) of the graphene can be modulated dynamically by the applied DC bias voltage, which enables us to electrically control the absorption performance of the proposed MMA flexibly. When Ef 0.8 eV, the relative bandwidth of the proposed MMA, which represents the frequency region of absorption beyond 90% can reaches its maximal value of 72.1% Simulated electric field distributions reveal that the broadband absorption mainly originates from the excitation of surface plasmon polaritons (SPPs) on the CGS graphene sheet. Furthermore, the proposed MMA is polarization insensitive and has wide angles for both transverse electric (TE) and transverse magnetic (TM) waves in the broadband frequency range. The broadband absorption capacity of the designed MMA can be effectively adjusted by varying the Fermi energy level of graphene. Lastly, the absorbance of the MMA can be adjusted from 42% to 99.1% by changing the Ef from 0 eV to 0.8 eV, which is in agreement with the theoretical calculation by using the interference 41theory. Due to its simple structure and flexible tunability, the proposed MMA has potential application prospects in tunable filtering, modulators, sensing, and other multispectral devices.", "corpus_id": 211216123, "venue": "Materials", "year": 2020, "author_names": [ "Fu Chen", "Yongzhi Cheng", "Hui Luo" ], "n_citations": 38, "n_key_citations": 0, "score": 0 }, { "doc_id": "218676507", "title": "Study on Temperature Adjustable Terahertz Metamaterial Absorber Based on Vanadium Dioxide", "abstract": "In the study of modern optics, the work of terahertz metamaterial absorbers is mostly multi band perfect absorbers and ultra wideband perfect absorbers. In contrast, in practical applications, metamaterial absorbers with adjustable resonance frequency or amplitude play an essential role in many forms. Here, we firstly designed an ultra wideband terahertz metamaterial perfect absorber, achieving over 99% perfect absorption in the 6.6 8.9 THz range. Secondly, based on the absorber, phase change material VO2 was added to improve the structure, and three tunable terahertz metamaterial absorbers based on VO2 were designed, respectively realizing broadband movement and conversion between broadband and multi band. Also, the terahertz absorber with dynamic tuning characteristics can flexibly control the absorption performance, providing an excellent platform for the realization of terahertz filtering, modulation, and so on.", "corpus_id": 218676507, "venue": "IEEE Access", "year": 2020, "author_names": [ "Yubin Zhang", "Pinghui Wu", "Zigang Zhou", "Xifang Chen", "Zao Yi", "Jiayi Zhu", "Tiansheng Zhang", "Huge Jile" ], "n_citations": 36, "n_key_citations": 0, "score": 0 }, { "doc_id": "221183356", "title": "Elliptical metallic rings shaped fractal metamaterial absorber in the visible regime", "abstract": "Achieving the broadband response of metamaterial absorbers has been quite challenging due to the inherent bandwidth limitations. Herein, the investigation was made of a unique kind of visible light metamaterial absorber comprising elliptical rings shaped fractal metasurface using tungsten metal. It was found that the proposed absorber exhibits average absorption of over 90% in the visible wavelength span of 400 750 nm. The features of perfect absorption could be observed because of the localized surface plasmon resonance that causes impedance matching. Moreover, in the context of optoelectronic applications, the absorber yields absorbance up to 70% even with the incidence obliquity in the range of 0deg 60deg for transverse electric polarization. The theory of multiple reflections was employed to further verify the performance of the absorber. The obtained theoretical results were found to be in close agreement with the simulation results. In order to optimize the results, the performance was analyzed in terms of the figure of merit and operating bandwidth. Significant amount of absorption in the entire visible span, wide angle stability, and utilization of low cost metal make the proposed absorber suitable in varieties of photonics applications, in particular photovoltaics, thermal emitters and sensors.", "corpus_id": 221183356, "venue": "Scientific Reports", "year": 2020, "author_names": [ "R M H Bilal", "Muna Ahmed Saeed", "Pankaj Kumar Choudhury", "Muhammad Abuzar Baqir", "Waqas Kamal", "M M Ali", "A A Rahim" ], "n_citations": 19, "n_key_citations": 0, "score": 0 }, { "doc_id": "13319253", "title": "Perfect metamaterial absorber.", "abstract": "We present the design for an absorbing metamaterial (MM) with near unity absorbance A(omega) Our structure consists of two MM resonators that couple separately to electric and magnetic fields so as to absorb all incident radiation within a single unit cell layer. We fabricate, characterize, and analyze a MM absorber with a slightly lower predicted A(omega) of 96% Unlike conventional absorbers, our MM consists solely of metallic elements. The substrate can therefore be optimized for other parameters of interest. We experimentally demonstrate a peak A(omega) greater than 88% at 11.5 GHz.", "corpus_id": 13319253, "venue": "Physical review letters", "year": 2008, "author_names": [ "Nathan Landy", "Soji Sajuyigbe", "Jack J Mock", "David R Smith", "Willie J Padilla" ], "n_citations": 4124, "n_key_citations": 49, "score": 0 }, { "doc_id": "210041480", "title": "High Quality Factor, High Sensitivity Metamaterial Graphene Perfect Absorber Based on Critical Coupling Theory and Impedance Matching", "abstract": "By means of critical coupling and impedance matching theory, we have numerically simulated the perfect absorption of monolayer graphene. Through the critical coupling effect and impedance matching, we studied a perfect single band absorption of the monolayer graphene and obtained high quality factor (Q factor 664.2) absorption spectrum which has an absorbance close to 100% in the near infrared region. The position of the absorption spectrum can be adjusted by changing the ratio between the radii of the elliptic cylinder air hole and the structural period. The sensitivity of the absorber can be achieved S 342.7 nm/RIU (RIU is the per refractive index unit) and FOM 199.2 (FOM is the figure of merit) which has great potential for development on biosensors. We believe that our research will have good application prospects in graphene photonic devices and optoelectronic devices.", "corpus_id": 210041480, "venue": "Nanomaterials", "year": 2020, "author_names": [ "Chunlian Cen", "Zeqiang Chen", "Danyang Xu", "Liying Jiang", "Xifang Chen", "Zao Yi", "Pinghui Wu", "Gongfa Li", "Yougen Yi" ], "n_citations": 80, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "229601610", "title": "Strategie de croissance, cycle de vie financier et gestion financiere des petites et moyennes entreprises", "abstract": "Les petites et moyennes entreprises (PME) font face a des contraintes de financement qui restreignent leurs strategies de croissance et la flexibilite de leur gestion financiere. Cette these contribue a une meilleure comprehension des strategies de croissance de PME ainsi qu'a leur gestion et leur financement du besoin en fonds de roulement (BFR) La premiere partie se concentre sur les strategies de croissance mises en oeuvre par les PME. Le premier chapitre presente les principales caracteristiques des operations de croissance externe des PME et l'articulation de ces operations avec l'introduction en bourse. Le deuxieme chapitre etudie l'impact sur la performance des operations de croissance externe. Le troisieme chapitre propose une etude exploratoire de la formation de groupes de societes par les PME. Dans la deuxieme partie, les caracteristiques de la gestion et du financement du BFR des PME sont analysees. Le quatrieme chapitre montre ainsi que la performance des PME est negativement affectee par un sous investissement en BFR a travers des couts d'opportunites et que cet effet est plus fort que pour des entreprises plus grandes. Le cinquieme chapitre indique que les PME nouvellement introduites en bourse offrent des delais de paiement plus importants a leur clients mais sans que d'autres aspects de la gestion du BFR ne soient modifies par l'introduction. Le sixieme chapitre montre la flexibilite financiere offerte par l'appartenance a un groupe de societes en matiere de gestion du BFR.", "corpus_id": 229601610, "venue": "", "year": 2020, "author_names": [ "Vivien Lefebvre" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "228265217", "title": "UE Gestion financiere", "abstract": "", "corpus_id": 228265217, "venue": "", "year": 2019, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "165706057", "title": "Maxi fiches Gestion financiere de l'entreprise Ed. 4", "abstract": "Cet ouvrage presente les 32 themes essentiels de la gestion financiere de l'entreprise sous forme de fiches synthetiques, claires et structurees, qui peuvent etre etudiees separement. A la fin de chaque fiche, une application corrigee permet de tester les acquis.L'ouvrage aborde la gestion financiere dans une optique dynamique. Deux grands axes sont ainsi developpes l'analyse financiere, pour apprecier les performances passees de l'entreprise (bilan, compte de resultat, SIG, tableau de financement. la strategie financiere, pour elaborer une gestion previsionnelle (plan de financement, BFR, criteres de choix d'investissement..Cette 4e edition mise a jour constitue un outil indispensable pour retenir l'essentiel, reviser facilement et reussir les examens.", "corpus_id": 165706057, "venue": "", "year": 2018, "author_names": [ "Dov Ogien" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "148433184", "title": "40 ans d'influence en gestion financiere et gouvernance des entreprises", "abstract": "Le premier numero de la Revue francaise de gestion est sorti en mai 1975. A l'epoque c'etait la seule revue academique s'interessant aux problematiques de la gestion et du management des entreprises. Pendant 40 ans, la RFG a permis a la recherche en gestion, notamment financiere, de faire etat des progres accomplis par les chercheurs et les professionnels. Cet article a pour objectif de montrer la richesse de la contribution de la RFG au domaine de la gestion financiere et son articulation avec les questions financieres issues de l'actualite. Le lecteur sera etonne de constater combien la RFG et ses auteurs ont su a la fois repondre aux questions que les gestionnaires financiers se posaient pendant ces quatre decennies mais egalement replacer ces questions dans les debats theoriques de la finance et de la gouvernance des entreprises.", "corpus_id": 148433184, "venue": "", "year": 2016, "author_names": [ "Michel M Albouy" ], "n_citations": 2, "n_key_citations": 1, "score": 0 }, { "doc_id": "186964035", "title": "Gestion financiere et comptable", "abstract": "", "corpus_id": 186964035, "venue": "", "year": 2018, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "235105576", "title": "Gestion financiere approfondie", "abstract": "", "corpus_id": 235105576, "venue": "", "year": 2018, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "190441980", "title": "Gestion financiere et budgetaire", "abstract": "", "corpus_id": 190441980, "venue": "", "year": 2018, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "200544153", "title": "Bilan previsionnel, gestion financiere", "abstract": "", "corpus_id": 200544153, "venue": "", "year": 2018, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "231308788", "title": "Gestion financiere et comptabilite", "abstract": "", "corpus_id": 231308788, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "192308679", "title": "Gestion financiere Jean Etienne Palard, Celine Barredy,", "abstract": "", "corpus_id": 192308679, "venue": "", "year": 2017, "author_names": [ "Jean-Etienne Palard", "Celine Barredy" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "224886323", "title": "Different Color Spaces In Deep Learning Based Water Segmentation For Autonomous Marine Operations", "abstract": "For autonomous unmanned surface vehicles (USV) operations, it is important to be able to observe the surroundings using visual information. Water segmentation is a task where the water surface is recognized and separated from everything else. The algorithm performing the segmentation must be robust, because safety is the most important feature of autonomous USVs. This is especially challenging in many USV applications, where the rapidly changing weather and lighting conditions can cause significant distribution shifts. In this study, we analyze the robustness of different color spaces (e.g. RGB and HSV) for water segmentation and consider how to use different color channels in training and testing to maximize the robustness. We evaluate the segmentation performance on a challenging completely unseen test dataset, recorded in vastly different conditions and with different equipment.", "corpus_id": 224886323, "venue": "2020 IEEE International Conference on Image Processing (ICIP)", "year": 2020, "author_names": [ "Jussi Taipalmaa", "Nikolaos Passalis", "Jenni Raitoharju" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "231976871", "title": "An Efficient Water Segmentation Method for SAR Images", "abstract": "Water segmentation is a fundamental step for the information processing of SAR image, which plays an important role in ship detection, disaster monitoring and other applications. Because of the complexity of scenario in the SAR images, water segmentation of SAR image is a challenging task. Fewer convolutional neural networks (CNNs) have been developed for SAR image water segmentation in recent years, the accuracy and speed of CNN for water segmentation can be further improved. In this paper, we established a SAR water segmentation dataset based on the GF3 satellite data. then an improved water segmentation network based on Bilateral Segmentation Network (BiSeNet) is proposed. Further we propose a loss function based on edge area and a novel training data generation method to improve the segmentation ability of the network. Experimental results based on water segmentation dataset show that the proposed segmentation method has better segmentation accuracy and speed.", "corpus_id": 231976871, "venue": "IGARSS 2020 2020 IEEE International Geoscience and Remote Sensing Symposium", "year": 2020, "author_names": [ "Muchen Dai", "Xiangguang Leng", "Boli Xiong", "Kefeng Ji" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "222119940", "title": "DEEP LEARNING APPLIED TO WATER SEGMENTATION", "abstract": "Abstract. The use of deep learning (DL) with convolutional neural networks (CNN) to monitor surface water can be a valuable supplement to costly and labour intense standard gauging stations. This paper presents the application of a recent CNN semantic segmentation method (SegNet) to automatically segment river water in imagery acquired by RGB sensors. This approach can be used as a new supporting tool because there are only a few studies using DL techniques to monitor water resources. The study area is a medium scale river (Wesenitz) located in the East of Germany. The captured images reflect different periods of the day over a period of approximately 50 days, allowing for the analysis of the river in different environmental conditions and situations. In the experiments, we evaluated the input image resolutions of 256 x 256 and 512 x 512 pixels to assess their influence on the performance of river segmentation. The performance of the CNN was measured with the pixel accuracy and IoU metrics revealing an accuracy of 98% and 97% respectively, for both resolutions, indicating that our approach is efficient to segment water in RGB imagery.", "corpus_id": 222119940, "venue": "", "year": 2020, "author_names": [ "Thales Akiyama", "Jose Marcato Junior", "Wesley Nunes Goncalves", "Patrik Ola Bressan", "Anette Eltner", "F Binder", "Thomas Singer" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "225392382", "title": "Deep Learning Based Water Segmentation for Autonomous Surface Vessel", "abstract": "", "corpus_id": 225392382, "venue": "", "year": 2020, "author_names": [ "Muhammad Ammar Mohd Adam", "Ahmad A I Ibrahim", "Zulkifli Zainal Abidin", "Hasan Firdaus Mohd Zaki" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "208089717", "title": "High Resolution Water Segmentation for Autonomous Unmanned Surface Vehicles: a Novel Dataset and Evaluation", "abstract": "Even though Unmanned Surface Vehicles (USVs) are increasingly used to perform various laborious and expensive offshore tasks, they still require an extensive dedicated crew supporting and ensuring the safety of their operations. The recent developments in computer vision and robotics further fueled the interest on developing autonomous USVs that will overcome the aforementioned limitations, unleashing their full potential. One of the most vital and fundamental tasks in order to automate and ensure the safety of USV operations is to perform water segmentation. Despite the importance of developing such segmentation methods, there is a lack of highresolution publicly available datasets, which are suitable for training and evaluating deep learning methods. The main contribution of this paper is collecting, annotating and releasing a publicly available high resolution dataset for developing deep learning algorithms for water segmentation in a Nordic lake environment. Furthermore, we adapt a deep learning algorithm previously applied for road segmentation to the water segmentation task. While the algorithm obtains a high accuracy, the results also allow for identifying critical limitations of the approach. Finally, we propose and evaluate a novel lightweight fully convolutional neural network architecture, fully adapted to the needs of water segmentation from highresolution images.", "corpus_id": 208089717, "venue": "2019 IEEE 29th International Workshop on Machine Learning for Signal Processing (MLSP)", "year": 2019, "author_names": [ "Jussi Taipalmaa", "Nikolaos Passalis", "Honglei Zhang", "Moncef Gabbouj", "Jenni Raitoharju" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "229378422", "title": "A Water Segmentation Algorithm for SAR Image Based on Dense Depthwise Separable Convolution", "abstract": "Water segmentation of real SAR images is of great significance in military and civilian applications such as ship target detection and disaster monitoring. To solve the issues of poor robustness and inaccurate segmentation of traditional water segmentation algorithms, this paper first establishes a SAR water segmentation dataset based on the GF3 satellite and then presents a segmentation network architecture based on depthwise separable convolution. The network takes real SAR images as inputs, extracts high dimensional features through depthwise separable and dilated convolutions, constructs an up sampling and decoding module based on bilinear interpolation, and then outputs the corresponding segmentation results. The segmentation results of a water segmentation dataset show that the proposed segmentation method remarkably improves the segmentation accuracy, the segmentation robustness and running speed than traditional method. Therefore, the findings demonstrate the excellent practical engineering value of the proposed algorithm.", "corpus_id": 229378422, "venue": "", "year": 2019, "author_names": [], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "155620439", "title": "SAR image land and water segmentation algorithm based on hybrid fuzzy", "abstract": "", "corpus_id": 155620439, "venue": "", "year": 2018, "author_names": [ "Zhengwei Guo", "Le Wang", "Guolei Song" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "19277644", "title": "Semi automated land/water segmentation of multi spectral imagery", "abstract": "Segmentation of land and water regions is necessary in many applications involving analysis of remote sensing imagery. Not only is manual segmentation of these regions prone to considerable subjective variability, but the large volume of imagery collected by modern platforms makes manual segmentation extremely tedious to perform, particularly in applications that require frequent re measurement. This paper examines a robust, semi automated approach that utilizes simple and efficient machine learning algorithms to perform supervised classification of multi spectral image data into land and water regions. By combining the four wavelength bands widely available in imaging platforms such as IKONOS, QuickBird, and GeoEye 1 with basic texture metrics, high quality segmentation can be achieved. An efficient workflow was created by constructing a Graphical User Interface (GUI) to these machine learning algorithms.", "corpus_id": 19277644, "venue": "OCEANS 2015 MTS/IEEE Washington", "year": 2015, "author_names": [ "Benjamin Cook", "Stephanie Graceffo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "29613472", "title": "X SAR SpotLigh images feature selection and water segmentation", "abstract": "In this paper we address the feature selection problem for X SAR images and further the segmentation of specific chosen classes. After defining a suitable feature space for X SAR images we select the most significant ones via a supervised machine learning approach: the 1 norm SVM. The selected features will be used for segmentation purposes, in order to segment water areas from the background. We shall see that the most relevant features are based on texture elements. So the segmentation is texture based and achieved with variational calculus and level set methods. The work is mainly focused on urban park X SAR SpotLight images, where lakes and rivers are often present. The images are collected with the COSMO SkyMed satellites constellation, equipped with a SAR sensor.", "corpus_id": 29613472, "venue": "2012 IEEE International Conference on Imaging Systems and Techniques Proceedings", "year": 2012, "author_names": [ "Bruno Cafaro", "Silvia Canale", "F Pirri" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "59694810", "title": "Water segmentation and classification", "abstract": "", "corpus_id": 59694810, "venue": "", "year": 2013, "author_names": [ "Pascal Mettes" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "72289406", "title": "Effects of Breastfeeding on the Development of Allergies", "abstract": "", "corpus_id": 72289406, "venue": "", "year": 2010, "author_names": [ "Ha Baik Lee" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "231827200", "title": "Breastfeeding duration modified the effects of neonatal and familial risk factors on childhood asthma and allergy: a population based study", "abstract": "Background Childhood asthma and allergic diseases are a significant global problem. There are inconsistent findings on the associations of delivery mode, the number of children in the household and breastfeeding with childhood asthma and allergic diseases. We assessed these associations and examined whether breastfeeding modified the effects of neonatal and familial risk factors on childhood asthma and allergic diseases. Methods A population based cross sectional study was conducted in Shanghai, China. A total of 17 primary schools were randomly selected from 13 districts of Shanghai in this study. The International Study of Asthma and Allergies in Childhood questionnaire was adopted to assess the childhood asthma and allergic diseases. Multivariable logistic regression models were used to evaluate the associations between neonatal and familial factors and childhood asthma and allergic diseases, and to examine the modification effects of breastfeeding on the associations assessed. Results Of 10,464 primary school children aged 6 11 years, the overall prevalence of childhood asthma, allergic rhinitis, urticaria, food allergy and drug allergy was 13.9, 22.7, 15.3, 8.1 and 4.6% respectively. Male sex, high socioeconomic status, cesarean section delivery, only one child in the household and having family history of allergy were associated with increased odds ratio (OR) of childhood asthma and allergic diseases while longer breastfeeding duration 6 months) was inversely associated with these diseases. Longer breastfeeding duration also attenuated the OR of neonatal and familial risk factors on childhood asthma and allergic diseases. For instance, the adjusted OR of childhood asthma in the group of vaginal delivery and breastfeeding duration 6 months was lowest (0.78, 95% confidence interval: 0.66, 0.92) Conclusions Longer breastfeeding duration was inversely associated with childhood asthma and allergic diseases, and also reduced the OR of neonatal and familial risk factors on these diseases. Giving the prevalence of childhood asthma and allergic diseases is rapidly rising across the globe, these findings may have important clinical and public health implications.", "corpus_id": 231827200, "venue": "Respiratory Research", "year": 2021, "author_names": [ "Yabin Hu", "Yiting Chen", "Shijian Liu", "Fan Jiang", "Mei-qin Wu", "Chonghuai Yan", "Jianguo Tan", "Guangjun Yu", "Yi Hu", "Yong Yin", "Jiajie Qu", "Shenghui Li", "Shilu Tong" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "31113312", "title": "Is 6 months still the best for exclusive breastfeeding and introduction of solids? A literature review with consideration to the risk of the development of allergies.", "abstract": "Health professionals advising mothers on the introduction of solid foods to infants need evidence based guidelines. A literature review on this topic was undertaken to examine the current international recommendations of expert bodies and evidence based research published since 2003. Particular reference in this review is made to the timing of introducing food allergens and the risk of development of allergy in the child. Recommendations in developed countries of reducing this risk by avoidance of allergenic foods until the child is of varying ages past 6 months have been challenged by recent population studies. Where the risk of allergy is a key consideration, currently available research suggests that introducing solids at 4 6 months may result in the lowest allergy risk. When all aspects of health are taken into account, the recommended duration of exclusive breastfeeding and age of introduction of solids were confirmed to be 6 months, but no later.", "corpus_id": 31113312, "venue": "Breastfeeding review professional publication of the Nursing Mothers' Association of Australia", "year": 2009, "author_names": [ "Joy Anderson", "Kathryn Malley", "Robynne Snell" ], "n_citations": 35, "n_key_citations": 1, "score": 0 }, { "doc_id": "4587737", "title": "Differences between preschoolers with asthma and allergies in urban and rural environments", "abstract": "ABSTRACT Objective: Previous studies have provided conflicting results about how living in a rural or urban environment influences schoolchildren with asthma and allergic diseases in different ways. The aim of the present study was to evaluate if recurrent wheezing preschoolers from rural or urban areas differ in asthma, allergic diseases, and atopy. Methods: A cross sectional study in Rafaela, Argentina, on 143 preschoolers with recurrent wheezing from rural and urban settings was performed (2010 2012) Diagnosis of asthma (by positive asthma predictive index [API] allergic diseases (rhinitis, dermatitis) and atopy (by skin prick test [SPT] peripheral blood eosinophils, and serum total IgE) were assessed. Results: Preschoolers from rural settings had significantly higher prevalence of vaginal delivery, longer breastfeeding, earlier onset of wheezing, more parental smoking, siblings, shared a bedroom, and more exposure to chemicals used in plant fumigation or farm animals, and unpasteurized milk consumption, in comparison to preschoolers living in urban setting. In contrast, preschoolers from urban areas had significantly higher prevalence of parental history of allergy, positive skin prick test, and positive API. After multivariate analysis adjusting for covariates, maternal smoking [odds ratio (OR) 3.44] and positive SPT (OR 5.57) significantly increase the risk of asthma diagnosis (positive API) in contrast, living in rural setting (OR 0.04) and having more siblings (OR 0.51) decrease their risk. Conclusions: Recurrent wheezing preschoolers from rural areas had a significant inverse odds of being diagnosed with asthma (type 2 inflammation) when compared to those from urban areas. Exposure to farm animals and consumption of unpasteurized milk might have a role.", "corpus_id": 4587737, "venue": "The Journal of asthma official journal of the Association for the Care of Asthma", "year": 2018, "author_names": [ "Daniel A Marfortt", "Dario Josviack", "Alejandro Lozano", "Eduardo Cuestas", "Luis Aguero", "Jose A Castro-Rodriguez" ], "n_citations": 10, "n_key_citations": 0, "score": 0 }, { "doc_id": "52129932", "title": "Possible Role of Environmental Factors in the Development of Food Allergies", "abstract": "The development of food allergies is thought to involve multiple factors, and it is unclear which conveys the most risk regarding this process. Since food allergy is a chronic disease without a cure at this time, understanding its development could provide an avenue for preventive practices and development of a curative treatment. Both historical and current data implicate maternal factors, genetics, and environmental exposures as major risk factors in the development of food allergy. An immature gut of the infant has been hypothesized as a possible route of sensitization. Breastfeeding until at least 6 months of age has been shown to have protective factors for the newborn and may possibly improve gut permeability. Newer studies such as the LEAP and EAT investigations also looked at early exposure and prevention of food allergies; their long term results are critical in understanding early introduction and tolerance. Cutaneous exposure, oral exposure, and food protein exposure in house dust with their relation to the food allergy course are also a path of interest. Current research has shown sensitization can occur through impaired skin such as those with eczema and a filaggrin mutation. Tropomyosin and alpha gal also are related to the complicated immunomodulatory factors involved in food allergy and allergic response. Cross reactivity with plant allergens, sensitization to house dust mite and cockroach, and lone star tick bites can also induce food allergens in children and adults. Together, these factors provide a cohesive beginning to understanding how food allergies can occur and can influence further investigation into prevention, treatment, and eventual cure of food allergies.", "corpus_id": 52129932, "venue": "Clinical Reviews in Allergy Immunology", "year": 2018, "author_names": [ "Jodi A Shroba", "Niharika Rath", "Charles Barnes" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "49564475", "title": "Early Infant Feeding Practices as Possible Risk Factors for Immunoglobulin E Mediated Food Allergies in Kuwait", "abstract": "Objective Early feeding and infant exposures have been suggested as potential risk factors for immunoglobulin E (IgE mediated food allergy (FA) We aimed to evaluate the association between IgE mediated FA in children and early exposures including the child's nutritional status, breastfeeding and its duration, the age at which the solid food was first introduced, antibiotic exposure during the first year of life, and the child's vitamin D status during infancy. Design A case control study. Setting and Subjects Children aged 0 13 years were recruited from pediatric allergy and immunology clinics (PAICs) located at major government hospitals in Kuwait (total FA cases: n 100; boys 67% and healthy controls (n 100, boys 55% were recruited from various vaccination units at primary healthcare centers. Results Cow's milk allergy was the most common type of FA. FA status was independently associated with the early exposures of exclusive breastfeeding (aOR 15.55 (3.26 74.19) p 0.001) vitamin D deficiency or insufficiency during infancy (aOR 5.42 (1.92 15.30) p 0.001) and antibiotic exposure during the first year of life (aOR 5.00 (1.58 15.84) p 0.006) Conclusions FA is highly prevalent among children in Kuwait, and our data indicate that early nutrition related and antibiotic exposures are associated with FA risk.", "corpus_id": 49564475, "venue": "International journal of pediatrics", "year": 2018, "author_names": [ "Dalal Alkazemi", "Munirah Albeajan", "Stan Kubow" ], "n_citations": 6, "n_key_citations": 0, "score": 1 }, { "doc_id": "25169891", "title": "[Influence of breastfeeding and diet in the development of allergies in children]", "abstract": "OBJECTIVE To evaluate the relationship between breastfeeding and the development of allergic diseases (AD) DESIGN A cases controls study. SETTING Santander University Hospital, Bucaramanga, Colombia, South America. Level II health care. PARTICIPANTS A total of 1460 boys and girls between 3 and 7 years old attending an outpatient clinic. MAIN MEASUREMENTS Partial (BF) and exclusive breastfeeding (EBF) relationship between the presence of allergic diseases and BF and EBF, adjusting for the confounding factors due to other exposures using logistic regression. RESULTS Out of a total of 1460 patients, 41.6% (95%CI 39.0 44.2) received EBF, while 44.4% (95%CI 41.9 47.0) were partially breastfed. Among those who had an allergy, 34.8% (95%CI 32.4 37.3) had rhinitis, 27.8% (95%CI 25.6 30.2) asthma and 11.6% (95%CI 10.0 13.4) atopic dermatitis; 7.0% (95%CI 5.1 9.3) had the three conditions. To breastfeed exclusively for >or= 3 months is a protective factor for AD (OR 0.70, 95%CI 0.48 1.03) Breastfeeding for 3 months, regardless of whether or not it is exclusive, is a risk factor for AD (OR 2.05, 95%CI 1.47 2.86) CONCLUSIONS The recommendation to exclusively breastfeed for as long as possible continues to be valid, as there was a significant preventive impact on the development of AD with the length of time breastfed. Prospective studies including lung function tests and immunological analyses need to be performed to confirm these findings.", "corpus_id": 25169891, "venue": "Atencion primaria", "year": 2009, "author_names": [ "Claudia Acevedo Villafane", "Fidel Latorre Latorre", "Liliana Cifuentes Cifuentes", "Luis Alfonso Diaz-Martinez", "Oscar Garza Acosta" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "71018391", "title": "The role of breastfeeding on the development of respiratory allergies [Abstract in English]", "abstract": "Aims To review the publications that investigated the association between breastfeeding and asthma in childhood. Source of data Recent scientific publications from the databases Scielo, Lilacs and Pubmed. Publications in English, Portuguese and Spanish have been included. We have tried to review the mechanisms of allergic reactions and respiratory allergies, as well as publications related to breast milk and the protection of respiratory allergies such as asthma. Summary of findings The allergic respiratory illnesses are constituted by asthma and allergic rhinitis, with characteristics of type I hypersensitivity, which results from the interaction of environmental allergens with specific IgE antibodies. Most of the reviews on asthma risk factors recommended exclusive breastfeeding to reduce the probability of the development of atopy and asthma in childhood. Although such opinion has been widely accepted, the results from the literature are conflicting. Conclusions Despite the elevated number of studies published on the subject, it is not possible to conclude that breastfeeding will help to prevent sensitization to allergens in children with asthma. Nevertheless, exclusive breastfeeding must be encouraged during the first months of life because of its large well known benefits.", "corpus_id": 71018391, "venue": "", "year": 2009, "author_names": [ "Denise Santos da Silva", "Aline Petter Schneider", "Renato Tetelbom Stein" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "80814310", "title": "Prebiotics for the Prevention of Allergies: A Systematic Review and Meta analysis of Randomized Controlled Trials", "abstract": "C Cuello Garcia, A Fiocchi, R Pawankar. Clin Exp Allergy. 2017;47(11):1468 1477 To assess whether supplementing prebiotics in pregnant women, breastfeeding mothers, and infants would affect the development of allergic diseases in children. The study population included pregnant women, breastfeeding mothers, infants born at term, or children up to 9 years of age. A systematic review and meta analysis was performed of studies in which researchers assessed the effects of prebiotic supplementation on the development of allergies. Randomized trials with a minimum follow up of 4 weeks and observational studies were included. In the studies, authors compared any type of prebiotic against placebo or no prebiotics. Exclusion criteria included cointerventions administered with prebiotics. Outcome measures included development of eczema, development of asthma and/or recurrent wheezing, development of food allergy, development of allergic rhinitis, adverse events in", "corpus_id": 80814310, "venue": "Pediatrics", "year": 2018, "author_names": [ "Evelyn A Wang", "Turaj Vazifedan", "Angela Duff Hogan" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "195663434", "title": "[The importance of breastfeeding for the infant]", "abstract": "Breastmilk is natural nutrition for infants. In addition to nutrients, breast milk contains a variety of immunomodulatory, anti inflammatory and antimicrobial substances that help to reduce short and long term morbidity risks and positively influence the child's cognitive and psychomotor development. Studies show that breastfed children are at a significantly lower risk for lower respiratory tract infections, otitis media, and gastroenteritis compared with non breastfed children. Also, the risk for sudden infant death syndrome is significantly reduced by breastfeeding. Breastfeeding does not have an influence on the risk of allergies, neither in the overall population nor in children with a familial predisposition. However, breastfeeding promotes brain development, especially of the white matter, and is associated with improved intelligence by about 2 IQ points. Furthermore, studies show an inverse correlation between breastfeeding and the subsequent risk for obesity, and there is evidence for a risk reduction of type 2 diabetes mellitus. Breastfed infants can largely regulate their food intake. This can have a positive effect on later eating behavior and the risk for becoming overweight. In view of the positive health effects of breastfeeding, it is recommended that infants be breast fed exclusively during the first few months of life and that complementary feeding should be started at the earliest from the beginning of the 5th month and no later than at the beginning of the 7th month. Complementary food should be offered in a suitable form and with consideration of the signals of the child. Overall, breastfeeding can make a significant contribution to promoting public health and thereby to reducing healthcare costs.", "corpus_id": 195663434, "venue": "Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz", "year": 2018, "author_names": [ "Elien Rouw", "Aleyd von Gartzen", "Anke Weissenborn" ], "n_citations": 4, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "191998588", "title": "Osteochondrome solitaire de la symphyse pubienne de decouverte fortuite", "abstract": "L'osteochondrome est la tumeur osseuse benigne la plus frequente. Elle touche habituellement les metaphyses des os longs, particulierement autour du genou et de l'humerus proximal. Il touche tres rarement la symphyse pubienne avec frequemment une symptomatologie atypique. Nous rapportons le cas d'un osteochondrome de la symphyse pubienne empietant sur la branche osseuse ilio pubienne chez un homme de 35 ans, de decouverte fortuite. Les explorations radiologiques, l'examen macroscopique et histologique confirment le diagnostic ainsi que l'absence de signe de malignite.", "corpus_id": 191998588, "venue": "The Pan African Medical Journal", "year": 2019, "author_names": [ "Dhouha Bacha", "Asma Sassi", "Sana Ben Slama", "Mouadh Nefiss", "Lassad Gharbi", "Saadia Bouraoui", "Ahlem Lahmar" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "56852517", "title": "Comparaison de 3 techniques de symphyse pleurale talcage chimique par le drain (talc slury) pleuroscopie avec instillation de talc (talc poudrage) et drain pleural tunnelise (PleurX) dans les pleureises neoplasiques", "abstract": "Introduction Au total, 15 des patients porteurs de cancers sont atteints d'une pleuresie neoplasique. Elles sont responsables d'une alteration de la qualite de vie des patients et representent un tournant dans l'evolution de la maladie. Actuellement trois techniques permettent leur prise en charge symptomatique talc slurry, talc poudrage et PleurX. L'objectif de notre etude etait de comparer l'efficacite de ces trois techniques au travers plusieurs elements taux de symphyse pleurale, durees d'hospitalisation et de drainage et taux de complications. Methodes Nous avons realise une etude multicentrique (CHU et CLCC de Caen) retrospective entre novembre 2013 et mars 2017. Les patients atteints de pleuresies neoplasiques et necessitant un drainage et une symphyse pleurale etaient inclus. Resultats Au total, 118 patients ont ete analyses. Les 3 pathologies les plus representees etaient les cancers du poumon (41 de la plevre (18 et du sein (13 Fig. 1 L'age moyen etait de 69,1 11,8 ans. La duree d'hospitalisation post procedure etait significativement plus elevee dans le groupe des drains (19,7 jours) vs 10,0 jours pour les pleuroscopies p 0,020) et 8,8 jours pour les PleurX p 0,010) Le taux de complications n'etait pas significativement different entre les 3 groupes p 0,533) Le taux de symphyse etait significativement plus important dans la pleuroscopie que dans celui des drains (78 vs 42 p 0,005) Les PleurX permettaient de realiser une chimiotherapie rapidement, 6 jours en moyenne apres la pose p 0,006) et de ne pas avoir recours a une deuxieme technique p 0,004) Conclusion L'obtention d'une symphyse pleurale est un element determinant dans la prise en charge des pleuresies neoplasiques. Il apparait clairement au travers de notre etude et de la litterature que deux techniques sont a privilegier la pleuroscopie et le PleurX. La pleuroscopie reste l'examen de reference lorsqu'un diagnostic ou qu'une symphyse pleurale sont recherches. Neanmoins, en cas de poumon trappe, de contre indication a la pleuroscopie ou de necessite de realiser une chimiotherapie en urgence, le PleurX permet une prise en charge symptomatique satisfaisante avec un taux de symphyse appreciable. La pose d'un PleurX au decours d'une pleuroscopie pourrait optimiser le taux de symphyse.", "corpus_id": 56852517, "venue": "", "year": 2018, "author_names": [ "Alexandra Jestin", "R Magnier", "Emmanuel Bergot" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "79794380", "title": "La symphyse pleurale par talcage sous video thoracoscopie medicale experience du service de pneumologie B, CHU d'Oran", "abstract": "Introduction En pneumologie, pres de 50 des epanchements pleuraux sont malins, ces pleuresies constituent un probleme diagnostique et surtout therapeutique du fait de leurs caracteres chroniques et rapidement recidivant, dont les ponctions sont debilitantes pour le patient. On a introduit recemment la technique de la symphyse pleurale sous thoracoscopie medicales qui a change l'ancienne methode (le slurry a travers le drain) est devenue le gold standard dans notre service. Methodes Quarante six dossiers de patients porteurs de pleuresies malignes ont ete etudies durant la periode de juin 2014 mai 2017. Le talcage a ete realise en salle d'endoscopie sous anesthesie locale avec une asepsie rigoureuse et premedication en utilisant 4 g de talc luzenacle (seul disponible en Algerie) poudre en pulverisation distribue uniformement dans toute la surface pleurale a travers le thoracoscope. Resultats L'etude a interesse 31 femmes et 15 hommes avec un sex ratio 2:1, la classe modele dominante correspond a la tranche d'age 41 60 ans, 43,4 des malades porteurs d'une neoplasie connue avec des localisations pleurales secondaires, 56,5 de la population d'etude ont beneficie d'une thoracoscopie a visee diagnostique et therapeutique (talcage) en meme temps. Le tabac etait note dans 46,2 Les symptomes cliniques ont ete representes par la dyspnee d'effort (78,2 la toux (52,1 la douleur thoracique (32,6 Le taux de reussite globale au talcage a 3 mois etait 87 avec une efficacite meilleure pour les cancers secondaires que le mesotheliome pleural. Conclusion La symphyse pleurale par talcage thoracoscopique est la nouvelle technique therapeutique utilisee dans notre service depuis 4 ans, qui reste l'examen tres efficace, le plus anodin et le moins couteux dans la prise en charge des pleuresies malignes recidivantes d'ou l'interet de sa realisation le plus tot possible dans l'histoire d'un epanchement malin.", "corpus_id": 79794380, "venue": "", "year": 2018, "author_names": [ "K Sahraoui", "S Bourkadi", "A Bennani" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "92093422", "title": "CO AM 02Croissance et ontogenese prenatale du profil foetal du menton et son rapport avec la symphyse mandibulaire", "abstract": "Resume Introduction/Objectifs Le menton correspond a la partie inferieure du visage. Sa visualisation sur le profil echographique de la face foetale est determinante pour le diagnostic prenatal de la retrognathie des sequences de Pierre Robin. L'objectif de l'etude anatomique etait de decrire la croissance et la forme du menton sur le profil foetal ainsi que sa relation avec la symphyse mandibulaire et donc la mandibule. Materiels/patients et methodes Le profil de 20 tetes foetales formolees, coupees dans le plan sagittal median et radiographiees, a ete etudie. La croissance de la levre inferieure, du menton et de la symphyse a ete determinee par rapport a l'age des foetus. Le contour du menton a ete etudie apres orientation et normalisation par rapport a la base du crane. Son emergence a ete etudie a partir de coupes Histologique (embryon stade 23) et micro imagerie IRM et CT issu du projet FETTAL. Resultats Le menton, absent chez l'embryon, devient bien visible sur le profil des 11SA. Sa croissance en hauteur est fortement correlee a celle de la symphyse mandibulaire. La croissance de la levre inferieure est plus lente ce qui modifie le profil. L'epaisseur des parties molles du menton croit avec une tres bonne correlation avec la hauteur du menton. Par rapport a la symphyse, la projection des parties molles en avant et en bas devient plus importante au 3e trimestre sans correlation avec l'inclinaison et la position de la symphyse et tres faiblement correle avec l'angle facial (moyenne 46deg et mediane 47,5deg) Conclusions Present des les premieres semaines de la vie foetale, le profil cutane du menton croit sans correlation nette avec la symphyse mandibulaire et l'angle facial. La simple visualisation du profil cutane du menton a l'echographie ne parait pas etre suffisante pour determiner le degre de retrognathie chez le foetus.", "corpus_id": 92093422, "venue": "", "year": 2018, "author_names": [ "Guillaume Captier", "J M A Faure", "A Lamouroux", "Johs Boe", "Florent Fuchs" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "80565047", "title": "Atteinte de la symphyse pubienne dans la pseudopolyarthrite rhizomelique: evaluation par un 18 FDG PET/CT", "abstract": "", "corpus_id": 80565047, "venue": "", "year": 2017, "author_names": [ "Maxime Sondag", "Frank Verhoeven", "Clement Prati", "Xavier Guillot", "Oleg Blagosklonov", "Hatem Boulahdour", "Daniel Wendling" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "79767477", "title": "La symphyse pleurale dans le traitement des epanchements pleuraux iodopovidone administree par drain thoracique versus thoracoscopie", "abstract": "Introduction La pleurodese a travers le drain thoracique est une technique peu invasive et efficace par rapport a la thoracoscopie [1] En Tunisie, l'iodopovidone, agent symphysant peu couteux a ete essentiellement utilise au cours de la thoracoscopie. But Comparer les avantages de l'iodopovidone administre par drain thoracique par rapport a la pleurodese par thoracoscopie. Methodes Etude retrospective descriptive et comparative de dossiers de patients suivis pour epanchement pleural et repartis en 2 groupes, G1 symphyse pleurale a l'iodopovidone 3 jours de suite a travers le drain thoracique n 43) et G2 symphyse pleurale par la thoracoscopie chirurgicale n 33) Resultats La symphyse pleurale a travers le drain thoracique etait significativement plus precoce pour le G1 (2,30 1,88 jours) vs 4,09 2,96 jours p 0,002) mais sans difference statistiquement significative pour la duree moyenne du drainage. La symphyse pleurale etait bien toleree dans les 2 groupes sans difference statistiquement significative (88 vs 91 Les signes de mauvaise tolerance (12 vs 9 et les complications liees a la symphyse pleurale (8 et 6 cas) etaient comparables dans les 2 groupes. Le succes de la symphyse pleurale etait statistiquement comparable entre les 2 groupes (76,7 vs 93 Apres symphyse pleurale, les douleurs thoraciques etaient significativement plus rapportees dans le G1 (53,5 vs 30,5 p 0,014) et le score moyen EVA etait significativement plus eleve dans le G1 (3,07 3,05) vs (1,27 2,38) p 0,009) La dyspnee etait significativement plus constatee dans le G1 (65 que dans le G2 (27 p 0,002) De plus, la progression tumorale etait significativement plus constatee dans le G1 (32 vs 9 p 0,02) Pour la recidive de l'epanchement, il n'y a pas de difference statistiquement significative (20 vs 6 mais le deces etait significativement plus rapporte dans le G1 (76 vs (36 p 0,001) Conclusion Nos resultats sont comparables a ceux de la litterature malgre la variabilite de la methodologie [2]", "corpus_id": 79767477, "venue": "", "year": 2016, "author_names": [ "A Ben Mansour", "Hafaoua Daghfous", "S Ben Saad", "M Ben Khelifa", "Fatma Tritar" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "78700086", "title": "Effet des anti inflammatoires non steroidiens sur l'efficacite de la symphyse pleurale par thoracoscopie pour pneumothorax spontanes de l'adulte", "abstract": "Introduction la symphyse pleurale par videothoracoscopie est le traitement de reference du pneumothorax spontane persistant ou recidivant chez l'adulte. Elle consiste en la creation d'une reaction inflammatoire locale. L'objectif de notre etude etait d'evaluer l'effet des anti inflammatoires non steroidiens (ketoprofene) utilises comme antalgiques post operatoires, sur l'efficacite de la symphyse pleurale. Materiel et methodes etude retrospective monocentrique non randomisee de type exposes non exposes au ketoprofene incluant les symphyses pleurales realisee sur une periode de 8 ans. Resultats 614 interventions ont ete incluses dans l'etude. Le ketoprofene a ete administre dans 82,4% des cas. Aucune difference statistiquement significative n'etait retrouvee sur le taux d'echec de la symphyse entre les 2 groupes (exposes 12,1% VS non exposes 6,5% dans l'analyse univariee. La consommation morphinique etait significativement diminuee chez les patients sous ketoprofene. Conclusion le ketoprofene ne diminue pas l'efficacite de la symphyse pleurale. Ces resultats sont a confirmer par de larges etudes prospectives.", "corpus_id": 78700086, "venue": "", "year": 2016, "author_names": [ "Helene Skuli-Bottelli" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "196435633", "title": "La tomodensitometrie volumique a faisceau conique pour l'evaluation du premaxillaire et de la symphyse dans les malocclusions de Classe I et de Classe III", "abstract": "Resume Objectifs Pour comparer le premaxillaire et la symphyse chez des sujets presentant une Classe I ou une Classe III, nous avons mesure les parametres suivants sur des scanners CBCT inclinaison des incisives, morphologie symphysaire, morphologie des proces alveolaires superieurs, leeways symphysaire et maxillaire, de meme que l'epaisseur osseuse maxillaire et mandibulaire aux niveaux anterieur et posterieur a differents points sous la jonction cementoamelaire. Materiels et methodes Des scanners CBCT ont ete realises sur 62 individus (41 femmes et 21 hommes) ages entre 11 et 53 ans (moyenne 23,26 ans) La relation dentosquelettique et la morphologie des proces alveolaires (epaisseur) ont ete evaluees avec des coupes axiales des machoires superieures et inferieures. Le test t parametrique de Student pour donnees appariees a ete utilise pour comparer les valeurs des Classes I et des Classes III sur des types de visages differents. Resultats De nombreuses differences significatives ont ete relevees entre les deux schemas faciaux en termes d'inclinaison dentaire, d'epaisseur alveolaire et de leeway. Conclusions Nos resultats confirment que les patients en Classe III disposent de peu de soutien parodontal au niveau des incisives superieures et inferieures, quelle que soit la quantite de leeway symphysaire disponible. Par consequent, tout deplacement dentaire doit etre soigneusement planifie et suivi.", "corpus_id": 196435633, "venue": "", "year": 2016, "author_names": [ "Luca Lombardo", "Chiara Berveglieri", "Raffaele Spena", "Giuseppe Siciliani" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "100140256", "title": "Analyse de l'atteinte de la symphyse pubienne au TEP Scan au 18 Fluorodesoxyglucose (18 FDG PET/CT) dans la pseudo polyarthrite rhizomelique", "abstract": "", "corpus_id": 100140256, "venue": "", "year": 2016, "author_names": [ "Maxime Sondag", "Xavier Guillot", "Frank Verhoeven", "Oleg Blagosklonov", "Clement Prati", "Hatem Boulahdour", "Daniel Wendling" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "188343068", "title": "La symphyse pubienne", "abstract": "", "corpus_id": 188343068, "venue": "", "year": 2016, "author_names": [ "Serge Auteur du texte Tixa", "Bernard Ebenegger" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "213871519", "title": "Influencia del amperaje y tiempo de residencia sobre la remocion de metales pesados en aguas acidas por electrocoagulacion", "abstract": "La investigacion tiene por objetivo determinar la influencia del amperaje y tiempo de residenciasobre la remocion de metales pesados en el tratamiento de aguas acidas por electrocoagulacion,proceso electroquimico que desestabiliza las cargas contaminantes por medio de electrodos, loque genera un intercambio ionico. Con el tiempo las particulas suspendidas propician una zona desedimentacion y flotacion debido a la densidad de los metales, dando como resultado la remocionde los metales presentes y agua de mejor calidad. Para comprobar este procedimiento se tomaron80 litros de muestra, de aguas acidas, de los Pad's 6 y 7 con un pH entre 2.00 y 2.12; se trabajocon un reactor de 10 amperios, 2 electrodos, catodo y anodo, en un tiempo promedio de 3h con03 min. Se obtuvieron resultados entre 70 100% de remocion de metales presentes y un agua deTipo III, debido a las variaciones del amperaje, cantidad de electrodos y tiempo de residencia; seobservaron cambios fisicoquimicos, obteniendose un pH entre 5.15 y 6.00.Palabras clave: Electrocoagulacion, electrodo, remocion de metales, agua acida.", "corpus_id": 213871519, "venue": "", "year": 2020, "author_names": [ "Enmy Eliany Gonzales Paredes", "Mirian Nataly Malca Yopla", "Gary Christiam Farfan Chilicaus", "Gladys Sandi Licapa Redolfo" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226155523", "title": "Recuperacion de metales procedentes de aguas acidas de mina para la sintesis de nanoparticulas", "abstract": "Las nanoparticulas metalicas (MNPs) presentan una amplia relacion superficie volumen que proporciona propiedades unicas y mejoradas en comparacion con el material macroscopico. Una de sus aplicaciones consiste en la adsorcion de contaminantes, motivo por el cual la sintesis de MNPs de diferentes metales utilizando diversas metodologias esta en amplio desarrollo. En este trabajo se propone la obtencion de nanoparticulas metalicas de diversos metales mayoritarios (Al, Fe, Zn, Cu, Cd y Pb) asi como de otros metales mas minoritarios (Ce, Nd, Pr, Dy y Sm) procedentes de aguas del drenaje acido de minas (acidic mining drainage, AMD) Para ello, inicialmente se simularan dichas aguas utilizando patrones de diferentes metales. Se sintetizaran NPs con dos procedimientos diferentes: en uno se utilizaran reactivos quimicos para la reduccion del metal y para la estabilizacion de las nanoparticulas metalicas (se utilizaria NaBH4 como reductor) mientras que en el otro se realizara mediante extractos naturales y reactivos sostenibles para el medio ambiente. El objetivo es comprobar si ambos procedimientos son equiparables y, por lo tanto, se haria una aportacion a la", "corpus_id": 226155523, "venue": "", "year": 2020, "author_names": [ "Alejandro Garcia" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "165587134", "title": "GENERACION DE AGUAS ACIDAS Y MITIGACION DEL IMPACTO AMBIENTAL EN MINAS", "abstract": "Los impactos o cambios en los acuiferos por accion de la mineria son bastante notorios, ya que como dijimos por la accion del bombeo y desague de minas existen variaciones del nivel freatico y asi mismo produccion de aguas acidas.", "corpus_id": 165587134, "venue": "Ciencia Desarrollo", "year": 2019, "author_names": [ "Julio Fernandez Prado", "Urbano Humberto Perez Rudas" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213006690", "title": "?16 centimos a cambio de aguas acidas? Respuestas politicas a la expansion minera en Cajamarca", "abstract": "", "corpus_id": 213006690, "venue": "", "year": 2019, "author_names": [ "Mauricio Brindis Zavaleta" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "214142960", "title": "Tratamiento de aguas acidas contaminadas con metales pesados mediante membranas de nanofiltracion", "abstract": "La industria de la metal*lurgia genera una quantitat elevada d'aigues contaminades que s'han de tractar. Aquestes contenen una elevada acidesa i unalt contingut de metalls pesants, i per tant requereixen un pretractament abans del seu abocament. Tradicionalment, aquestes es tracten mitjancant l'addicio d'una base per neutralitzar l'acidesa i per eliminar els metalls com hidroxids.L'esgotament dels recursos miners i l'alt consum de reactius quimics per al seu tractament ha fet que es promoguin escenaris d'economia circular per tal de recuperar components d'interes, com poden ser acids i metalls de valor afegit, com el Cu o el Zn. La nanofiltracio (NF)es tracta d'una tecnologia de membrana que pot oferir unes bones propietats per al tractament d'aquests correntsacids, ja que permetra obtenir acid com a permeat i, a la vegada, recuperar els metalls en dissolucio. Amb aquest treball es preten estudiar la recuperacio d'acid i el rebuig de metalls amb una membrana de NF(Duracid de GE Osmonics) d'un aigua acida que simula un residu de la industria metal*lurgica del coure. Aquesta dissolucio es caracteritza per un pH acid 90% mentre que l'acid va ser transportat a traves de la membrana (rebuig 30% Les dades van demostrar que els fenomens d'exclusio dielectrica i l'exclusio de Donnan son els principals mecanismes de separacio per a aquesta membrana. A mes, aquestes dades van ser modeladesd'acord al SDFM i es van determinar les permeabilitats dels ions.", "corpus_id": 214142960, "venue": "", "year": 2019, "author_names": [ "Smit Vidosa", "Ignacio Ramon" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "165989487", "title": "Estudio de aplicaciones emergentes de las nanoparticulas metalicas obtenidas a partir de aguas acidas de minas", "abstract": "La nanociencia esta siendo un area en auge exponencial de exploracion. Esto se debe a la gran cantidad de aplicaciones que abre esta, llamada la ciencia de lo pequeno. Los seres humanos realizan muchas actividades que contaminan en gran parte el medio ambiente. Una de ellas muy significativa, es la contaminacion de aguas debido a la mineria. El nombre de estas es, aguas acidas de minas y tienen una gran cantidad de metales en ellas. En este proyecto se realiza un estudio bibliografico extensivo. Por una parte, se estudian todos los avances de la nanociencia y las nuevas propiedades de las nanoparticulas. Por otra parte, se hace un estudio sobre las aguas acidas de minas y de como reducir la contaminacion reaprovechando los metales que hay en ellas. Asi pues, se han buscado metodos de sintesis de las nanoparticulas metalicas, tanto metodos sostenibles como metodos en los que se utilizan reactivos quimicos para su sintesis posterior en el laboratorio. En busca de la sostenibilidad medioambiental, se han buscado sinergias entre las nanoparticulas y la descontaminacion de aguas acidas de minas. Finalmente, se presentan de forma ordenada, futuros usos y posibles aplicaciones interesantes de estas nanoparticulas metalicas.", "corpus_id": 165989487, "venue": "", "year": 2018, "author_names": [ "Albert Ezquerro Luque" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "171788015", "title": "Tratamiento de aguas acidas de mina mediante el uso de una membrana ceramica", "abstract": "En este Trabajo de Final de Grado (TFG) se ha estudiado la capacidad de eliminacion de las especies ionicas presentes en las aguas acidas de mina (AAM) mediante el uso de una membrana de Nanofiltracion (NF) ceramica. Para la realizacion del estudio ha sido necesario la presencia de una parte teorica donde encontrar una explicacion general sobre las membranas de NF y sus mecanismos de eliminacion, asi como la realizacion de una parte experimental, a partir de la cual se han extraido resultados que se han analizado para asi adquirir una serie de conclusiones sobre la capacidad de rechazo de la membrana. La parte experimental se ha realizado en una planta a escala laboratorio basada en un modulo de membrana tubular con circulacion transversal y recirculacion del permeado y del concentrado al tanque donde se encuentra la alimentacion. En esta planta se han realizado diversos experimentos a partir de dos disoluciones diferentes que pretendian simular las AAM. En la primera disolucion se preparo 25L de Na2SO4 a 0,01M, con la que se pretendio estudiar el rechazo de las siguientes especies ionicas: SO42 ,Na+ y H+ En la segunda disolucion tambien se preparo 25L de Na2SO4 a 0,01M, pero esta vez la disolucion tambien contenia una cantidad de especies metalicas. Con esta nueva disolucion se pretendio estudiar el rechazo de las siguientes especies ionicas: SO42 ,Na+,H+ Fe2+,Cu2+ y Zn2+ La planta ha estado operando a temperatura constante y con un rango de presion de trabajo que variaba entre 6 13 bar. Las muestras, tanto de la alimentacion como del permeado, fueron analizadas por conductimetria, pH metria, cromatografia ionica y absorcion atomica con los que se determino la concentracion de las especies de estudio. Los resultados experimentales obtenidos por los diferentes metodos de analisis se trataron mediante el Solution Diffusion Film Model (SDFM) Utilizando la herramienta de calculo Excel se graficaron los valores experimentales del rechazo y las simulaciones obtenidas mediante el SDFM, y se calcularon la permeabilidad de la membrana de los diferentes iones de estudio. Los resultados obtenidos en la modelizacion de la primera disolucion mostraban que graficamente los valores experimentales del rechazo se ajustaban a la representacion grafica del SDFM en todos los pH de trabajo. Tambien mostraban que a un pH 6,3 se observa un rechazo superior al 75% valor que iba en aumento a medida que se acercaba a un pH de 14,debido a la presencia de una carga electrica negativa en la superficie de la membrana ceramica que repelia a la mayoria de las especies ionicas con carga electrica negativa (mayoritariamente SO42 Los resultados obtenidos en la modelizacion de la segunda disolucion mostraban que graficamente los valores experimentales del rechazo se ajustaban a la representacion grafica del SDFM en todos los pH de trabajo. Tambien mostraba que a pH 2,8 el rechazo de la sal de Na2SO4 no superaba el 30% mientras que el rechazo de los iones metalicos rondaba sobre el 40% siendo claramente superiores al de la sal, y que a medida que el pH se acerca al valor de 1 todos los rechazos disminuian. Respecto a la permeabilidad de la membrana de las diferentes especies quimicas, se observaron diferentes irregularidades como la obtencion de valores de permeabilidad exageradamente altas o que en ambas disoluciones de estudio los resultados de las permeabilidades no concordaran con los resultados obtenidos al graficar el SDFM. Estos hechos provocaron que no se pudiera validar el modelo SDFM para la membrana ceramica del estudio. Una vez modelados todos los casos se dispuso a comparar los resultados de este trabajo con los resultados de proyectos de anos pasados que usaban membranas polimericas. La comparacion de los resultados procedentes de la primera disolucion mostraba que los rechazos obtenidos por las membranas polimericas eran superiores al de la membrana ceramica. Usar una membrana polimerica proporcionaba un rechazo de la sal que ronda el 70% en medios acidos, valor que unicamente era obtenido cuando la membrana ceramica trabajaba a pH alcalinos. La comparacion de los resultados procedentes de la segunda disolucion tambien mostraba rechazos superiores en las membranas polimericas. Utilizar una membrana polimerica para reducir la presencia de la sal de Na2SO4 y de las especies metalicas era efectiva, dado que con ella se obtenia un rechazo del 70% de la sal y un rechazo superior al 80% en las especies metalicas .En todos los casos de estudio procedentes de los proyectos con membranas polimericas se ha observado que graficamente el modelo SDFM se ajusta perfectamente a los datos experimentales del rechazo, y los valores de las permeabilidades concuerdan con la representacion grafica del SDFM. Los resultados obtenidos demostraban que las membranas polimericas trabajaban con mayor eficiencia que la membrana ceramica del estudio. Por lo que se concluyo, que en el tratamiento de las AAM la utilizacion de la membrana ceramica debia ser conjuntamente a las membranas polimericas, es decir, usar primeramente la membrana ceramica como pretratamiento a las AAM para eliminar su acidez, y posteriormente utilizar las membranas polimericas. Utilizando este metodo se podria reducir la degradacion de los polimeros causado por la acidez de las aguas.", "corpus_id": 171788015, "venue": "", "year": 2018, "author_names": [ "Daniel de Cruz" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "209728849", "title": "Tratamiento de aguas acidas con dolomita para disminuir la concentracion de Cu y Zn en efluentes de la planta concentradora victoria en la Provincia de Yauli La Oroya", "abstract": "xiv INTRODUCCION xv CAPITULO I 16 MARCO TEORICO 16 1.1 Antecedentes o marco referencial 16 1.2 Bases teoricas y conceptuales 19 1.2.1 Aguas acidas de mina 19 1.2.2 Acidez de aguas de mina 20 a) Generacion de acidez 20 b) Medicion de acides en aguas acidas de mina 23 c) Alcalinidad de las aguas acidas 25 1.2.3 Minerales generadores de acidez 26 1.2.4 La dolomita 27 1.2.5 Metodos activos de tratamientos de aguas acidas de mina 29 1.2.6 Clasificacion de drenajes de mina 32 1.2.7 Drenajes alcalinos 34 1.2.8 Drenajes acidos 34 1.3 Definicion de terminos basicos 35", "corpus_id": 209728849, "venue": "", "year": 2018, "author_names": [ "Ruiz Salazar", "Joel Alberto" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "127547303", "title": "Evaluacion del potencial de aprovechamiento del cascaron de huevo para estabilizar el PH de aguas acidas", "abstract": "Debido a la permanente produccion de residuos solidos que obliga a su disposicion final en rellenos sanitarios y en algunos casos en botaderos a cielo abierto, cuando se trata de materia organica caracterizada por la potencializacion de produccion de lixiviados, distinguidos por su dificil tratamiento y con su consecuente impacto ambiental negativo, ha conllevado a una constante busqueda de alternativas de aprovechamiento para su incorporacion como materias primas al sistema productivo, como es el caso del cascaron de huevo de gallina que hace parte de la canasta familiar en Colombia y su consumo es diario y masivo, estando su potencial en su mayor composicion de carbonato de calcio en porcentaje superior al 95% Para la presente investigacion experimental de diseno exploratorio y descriptivo, se utilizo como estabilizante del pH acido de agua cruda de fuentes hidricas superficiales, el cascaron de huevo previamente preparado mediante deshidratacion, trituracion, maceracion y pulverizacion, siendo una solucion alternativa accesible a poblaciones en condicion de vulnerabilidad y marginalidad que consumen agua con pH bajo que puede incidir en la salud humana; dada su facilidad de acceso por estar presente la buena parte de los hogares del pais, ademas de su sencilla preparacion y aplicacion sin riesgo en el agua para consumo. Para su evaluacion, se tomaron muestras de agua superficial con pH bajo e inferior a 6.5, sometiendola a aplicacion del cascaron de huevo pulverizado en solucion, obteniendose resultados satisfactorios mediante su estabilizacion a pH de 7, siendo una opcion viable en el tratamiento de agua para consumo humano. Segun la experimentacion realizada en las diferentes pruebas realizadas mediante tamizados, el tamano eficiente de maceracion para neutralizar es aquel menor a 0.1 mm.", "corpus_id": 127547303, "venue": "", "year": 2018, "author_names": [ "C Segura", "Ocar Efren Ospina Zuniga" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198353266", "title": "Diseno de planta de tratamiento de aguas acidas de mina con alto contenido de manganeso y zinc", "abstract": "", "corpus_id": 198353266, "venue": "", "year": 2018, "author_names": [ "Rodriguez Vasquez", "Carmen Elisa Escobar Maria" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "228830731", "title": "The Male Gaze in Visual Culture", "abstract": "", "corpus_id": 228830731, "venue": "", "year": 2020, "author_names": [ "Claire Sisco King" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "149632761", "title": "Visual pleasure from motherhood: Alyssa Milano challenging the male gaze", "abstract": "Using male and female gaze theories as frameworks, this article analyzes the visual design and composition of four distinct breastfeeding (BF) photographs posted by Alyssa Milano to her Instagram in order to better understand the public's mixed responses of support and criticism. I argue that Milano borrows visual elements from the male gaze and combines them with feminine content in an attempt to (1) challenge the dominant, patriarchal norm of deriving pleasure from viewing sexualized women and (2) instead encourage an understanding of the maternal woman as visually pleasing. In turn, Milano's message supports the normalization of public BF. Milano's position as firmly entrenched in the male dominated world of television and film is key: it enables her to speak and promote change from within the system, for external oppositions often remain on the outside, as counterpoint. Using Instagram promotes this as well. Rather than dilute their power, intermingling BF images with those representing the dominant culture may prove more successful for its gradual progression to normalization. The end goal, of course, is to encourage not just acceptance but a sense of pleasure in seeing feminine representations of women, including those focused on aspects of motherhood, like BF.", "corpus_id": 149632761, "venue": "", "year": 2018, "author_names": [ "Raeann Ritland" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "148714885", "title": "'If you look at me like at a piece of meat, then that's a problem' women in the center of the male gaze. Feminist Poststructuralist Discourse Analysis as a tool of critique", "abstract": "ABSTRACT This article proposes a discursive approach to beauty, which it illustrates with a close data analysis of women's relationship with the 'male gaze' In gender and feminist studies, the male gaze is invoked with reference to the patriarchal surveillance of women's bodies. The article complements studies that approach the surveillance as a socio cultural phenomenon by investigating it as a discursive accomplishment of a social relation and identification. Taking a Feminist Poststructuralist Discourse Analysis approach to the matter (and combining it with a discursive psychological perspective) this article focuses on the complexities and ambiguities underwriting individuals' personalized ways of dealing with being looked at. Women's positioning to the male gaze by means of culturally available discourses is found to reveal ambiguous sites of agency and submission within its scope. Examining them, the article addresses the importance of combining a feminist poststructuralist perspective on the relations of gender with women's lived understandings of being implicated in them. (How) can lived and academic sensibilities be set side by side in gender research? Is there a methodology of discourse analysis that facilitates this?", "corpus_id": 148714885, "venue": "", "year": 2018, "author_names": [ "Ewa Glapka" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "210852500", "title": "'I'm a Creep, I'm a Weirdo' Street Photography in the Service of the Male Gaze", "abstract": "This chapter considers two phenomena, both of which involve the digitally mediated collection and sharing of images of people without their knowledge or consent. In the first, \"creepshots,\" individuals take surreptitious photographs and share them on online message boards. In the second, individuals scour virtual street maps (such as Google Street View) for \"notable\" images that are then placed elsewhere online for others to review. In both cases, there is a large and anonymous audience viewing the images. In both cases, women in public or quasi public spaces are the overwhelming targets of this digital gaze. In both cases, the online commentary quickly becomes sexual in nature, and is frequently overtly hostile. This chapter argues that these practices implicate different kinds of harms broader, more diffuse than conventional privacy invasions. As such, rather than being understood through the rubric of 'privacy' they are better understood as a new form of public surveillance. Consequently, legal mechanisms grounded in the typical (liberal) dichotomous understanding of what is public and what is private are unlikely to prove an adequate solution.", "corpus_id": 210852500, "venue": "", "year": 2018, "author_names": [ "Stuart Hargreaves" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "204780082", "title": "Explainer what does the male gaze mean and what about a female gaze", "abstract": "", "corpus_id": 204780082, "venue": "", "year": 2018, "author_names": [ "Janice Loreck" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "151618249", "title": "Muslim male segmentation: the male gaze and girl power in Malaysian vampire movies", "abstract": "Purpose The purpose of this paper is to propose and develop a distinct perspective from the consumer culture theory in the context of Muslim consumers, marketing and the feminist theory. Design/methodology/approach This paper is based on a critical review of the literature for insights into the consumer culture theory in the context of Muslim consumers, Islamic marketing paradigm and the feminist theory. Findings The study suggests that scholars in the area of marketing may consider drawing on the theory of Islamic consumer culture, film and feminist theory. This theory can be used as a platform to understand the Muslim mind and the related cultural traits to create greater engagement and interest in Malaysian horror genres among local and international audience. The Malaysian local horror genres currently have an interesting blend of Islam, local culture and gender biases addressing the universal concept of good against the evil forces, and this has the potential of offering new experiences to especially international audiences. Research limitations/implications This study is purely theory based and is aimed at knowledge development in this field of Islamic consumer culture. It also invites academics to engage in scholarly activities toward theory building in this area. Practical implications The study provides directions for areas of possible future research in Islamic marketing, consumer culture and film studies. Social implications This study intends to broaden the research efforts in Islamic consumer culture marketing in terms of innovative ways to serve this growing Muslim market. Originality/value This study contributes to the discipline by providing new perspectives in Islamic consumer culture inquiry in the context of film studies.", "corpus_id": 151618249, "venue": "", "year": 2017, "author_names": [ "Thanaseelen Rajasakran", "Santhidran Sinnappan", "Thinavan Periyayya", "S Balakrishnan" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "55307237", "title": "Resisting the Male Gaze: Feminist Responses to the \"Normatization\" of the Female Body in Western Culture", "abstract": "Introduction Power relations can materially penetrate the body in depth, without depending even on the mediation of the subject's own representation. Michel Foucault (3) The purpose of this study is to discuss some aspects of the representation of female corporeity in Western culture, a representation universally recognized as having been constructed and developed through a gender ideology at the service of the institutions of patriarchy, and covertly disseminated through the imposed and controlling definition of the \"ideal\" model of the female body. Secondly, the study intends to show how opposition in feminist thought to this patriarchally motivated representation has emerged through a specific discourse of resistance, a re representation of human corporeity, focusing on variations of the notion of hybridity, multiple mixed bodily forms. The first part of this article outlines what I have termed \"normatized corporeity\" i.e. the media induced promotion of a norm of bodily appearance along with the physical, psychological and social consequences provoked by that normative canon. The second part explores cultural and feminist theory in order to identify some of the avenues for resistance to the imposition of bodily normativity, resistance foregrounded by the awareness of the disciplinary function of the male gaze, the refusal of a univocal model for the female body and, above all, the commitment to the principle of difference. (4) Part I: Normatized Corporeity The Binarized Body Cultural representations of the body have been delineated according to a model for the human subject as male, white, heterosexual, middle class, leading to descriptions of corporeity rotating around a binary framework, an either/or condition, encoding distinctions of gender, race and class: male/female, white/black, heterosexual/homosexual, middle class/working class etc. Actually, given that the combination male+white+heterosexual+middle class seems to be the prototype for the human subject, the binary is more rightly defined as male/non male, white/nonwhite, heterosexual/ non heterosexual, middle class non middle class. In other words, there is one polarity of the binary that carries negative social value since it is presented as a \"noncondition\" as something \"missing\" or \"unachieved\" as a \"deficit\" condition, whereas the positive polarity is erected as norm. It could be added also that in our contemporary times, another descriptor has been added, weight, with the normative condition as thinness and the deficit condition as non thinness. One of the main victims of the strictures of this socially constructed binary is the female part of humanity, the \"second sex\" to cite the seminal attribute for women theorized by the icon of feminist thought, Simone De Beauvoir. Moreover, women are especially victimized when they possess one or more of these non conditions, i.e. non male, non heterosexual, non white, non middle class (and non thin) etc. The Female Body Feminist scholarship in the Western tradition has constantly denounced the historical invisibility and inaudibility of the female subject. Deprived of voice in culture, society and politics, women have been traditionally confined to the muted corners of domesticity, to the silenced margins of sociality, to the powerless outskirts of politicality. At the same time, female corporeity is intensely visible; exemplary of what Foucault (1980:186) considers a paradox in contemporary culture the simultaneous disappearance and over exposure of the body in culture, institutions, and in the persuasive discourse of social communication. However, this apparently paradoxical condition of the simultaneous presence of corporeal visibility and invisibility, in Foucauldian terms, carries a particularly salient political value when it touches the female subject. The invisibility of women has been accompanied in an extraordinarily inversely proportionate manner by the visual display of her physical appearance, of her body as material object, to be observed, judged, valued, appreciated, rejected, modified and essentially commodified, for socially constructed purposes.", "corpus_id": 55307237, "venue": "", "year": 2016, "author_names": [ "Diane Ponterotto" ], "n_citations": 22, "n_key_citations": 3, "score": 0 }, { "doc_id": "144640087", "title": "The Male Gaze and Online Sports Punditry", "abstract": "On September 11, 2010, Ines Sainz, a sports reporter for Mexican television network TV Azteca, was allegedly harassed by members of the New York Jets football team. Controversy erupted around the role of women in sports broadcasting and the myriad attendant dimensions involved, including issues of credibility, dominant beauty ideals, and the male gaze, among others. This study assesses how sports blogs covered the controversy, using a combination of in depth interviewing and textual analysis of four popular sports blogs. The analysis revealed that the blogs constructed an atmosphere that exposed attitudes of objectification, Sainz's perceived lack of credibility, and the sexual economy of sports blogs.", "corpus_id": 144640087, "venue": "", "year": 2015, "author_names": [ "Kenneth R Merrill", "Aidan Bryant", "Emily Dolan", "Si-Kwang Chang" ], "n_citations": 13, "n_key_citations": 1, "score": 0 }, { "doc_id": "143233729", "title": "An Experimental Analysis of Young Women's Attitude Toward the Male Gaze Following Exposure to Centerfold Images of Varying Explicitness", "abstract": "Centerfold images (i.e. still shot depictions of lone, provocatively posed, scantily clad women) are one of the most enduring, pervasive, and popular forms of sexual media. This study measured young women's attitude toward the male gaze following exposure to centerfolds of varying explicitness. Explicitness was operationalized as degree of undress. Women exposed to more explicit centerfolds expressed greater acceptance of the male gaze than women exposed to less explicit centerfolds immediately after exposure and at a 48 hour follow up. These results support the view that the more media depictions of women display women's bodies, the stronger the message they send that women are sights to be observed by others. They also suggest that even brief exposure to explicit centerfolds can have a nontransitory effect on women's sociosexual attitudes.", "corpus_id": 143233729, "venue": "", "year": 2015, "author_names": [ "Paul J Wright", "Analisa Arroyo", "Soyoung Bae" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "149661349", "title": "Gender responsivity and the male gaze", "abstract": "", "corpus_id": 149661349, "venue": "", "year": 2017, "author_names": [ "Karen Evans" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "142487020", "title": "Anthropologies of class: power, practice and inequality", "abstract": "Introduction: class and the new anthropological holism Don Kalb 1. The concept of class James G. Carrier 2. Dispossession, disorganization, and the anthropology of labor August Carbonella and Sharryn Kasmir 3. The organic intellectual and the production of class in Spain Susana Narotzky 4. Through a class darkly, but then face to face: praxis through the lens of class Gavin Smith 5. Walmart, American consumer citizenship, and the erasure of class Jane Collins 6. When space draws the line on class Marc Morell 7. Class trajectories and indigenism among agricultural workers in Kerala Luisa Steur 8. Making middle class families in Calcutta Henrike Donner 9. Working class politics in a Brazilian steel town Mao Mollona 10. Export processing zones and global class formation Patrick Neveling 11. Global systemic crisis, class, and its representations Jonathan Friedman.", "corpus_id": 142487020, "venue": "", "year": 2015, "author_names": [ "James G Carrier", "D P Kalb" ], "n_citations": 53, "n_key_citations": 2, "score": 1 }, { "doc_id": "141350717", "title": "Arts Labor in the Age of Occupation", "abstract": "In the fifteen years I have been writing and publishing art criticism, I've seen a few shifts in the art world. There was the rise of participatory art and social practice, and a version of these that flourished al biennials labeled \"Relational Aesthetics; which a fellow critic, Howard Halle, recently called conceptualism For oligarchs THere, was the rise of interest in periormance and calls to end object making although an artist friend recently asked, \"Does that mean were going to leave it to Nike, Sony and Walmart to put all the objects into the world?\" And then.came the worldwide Oceupy movement, inlluenced by the Arab Spring, the European Summer, and, in the fall of 2011, Occupy Will Street (OWS) I was not involved in earlier iterations of OWS. lifer Bloonibergville. an encampment near City Hall in New York that started in the summer of 2011. I became involved with OWS shortly after September 17, when the occupation started and some of the questions it raised, naturally involved how it might relate to the present and future Occupy Wall Street dovetailed in many ways with current strains of an. like social practice, in which artists function more as event planners, organizers, sociologists, and activists, and panieipaiion that involves an made or completed by groups rather than singular, individual \"geniuses.\" There is also an overlap with lite 1900s, which brought performance, video, installation. Land Art earthworks, and the interdisciplinary mergers of media like dance film, theater, and writing. It was also an age of radical politics, and although the failures of many projects were already obvious in the '60s, some of these weren't apparent until die '70s, when Institutional Critique which would become a recognized institutional form in the \"80s entered the art world. What the '60s had that was absent except in a nostalgic, mannered, and aestheticized form umtil OWS, hoNvcves, was a real sense of Utopia and possibility. In the millennial era, one could In' an activist artist, but one was generally still working within a system of galleries, museums, biennials, curators, critics, collectors, interns, publicists, and other satellite figures. And neohberalistn, which had supposedly saved us from the economic crisis of the 70s, had put into place a system in which artists who wanted to participate often had to incur huge debt to obtain BFA and NITA degrees similar to professionals in other fiekk, except that art remained a precarious, risky venture. So, when the Occupy movement erupted it was speaking a language familiar to many in the art world. Historically, art has been funded with exceptions, of course by the wealthiest one percent. Only in recent years have trustees, collectors, and patrons moved into the foreground, influencing the production and exhibition of art particularly with the rim of global art (airs. OWS's famous call for \"horizontality,\" adopted from die \"horizontalidad\" used in the movements that erupted in .Argentina for lowing t he economic crisis of 2001. called for a more equal distribution of management of power But horizomalism could also be contrasted with art's hierarchical pyramid, most notably in its system of canonization, which coincided with die rise of capitalism.(2) Occupy's main strategy, taking up residence in public space, echoed social practice's attempt to move art into different spheres. The crises highlighted by OVVS resonated with some scholars and critics too. Critical theory, which entered art historv in the 70s and \"80s. had risen out of the revolts 01 the '60s. Inn had become a somewhat .stultified, boutique sysinn of analyst and interpretation. And the financial crisis in journalism brought on by the rise of the internet as well as the supplantaiion of critics by curators in the art power equation precipitated a \"crisis in criticism.\" And then came a real, actual, and unexpected revolution: the mass protest movements that erupted on the global stage in 2011.", "corpus_id": 141350717, "venue": "", "year": 2012, "author_names": [ "Martha Schwendener" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "148483710", "title": "Food Stamps, Unjust Enrichment and Minimum Wage", "abstract": "A number of large retail chains with monopsony power, such as Walmart, pay their low level employees so little that these employees are eligible for food stamps and other governmental benefits. In addition to paying low wages, these chains often have hourly restrictions so that their employees are not eligible for overtime pay. At times the chains violate the wage and hour provisions of the Fair Labor Standards Act (FLSA) by making hourly employees work \"off the clock,\" a practice known as wage theft.One of the reasons these low wage retailers can pay so little is because their employees can supplement their income with food stamps. Another reason is the minimum wage of $7.25 per hour has not been raised since 2009. Paying anything more seems generous. Whether to raise the minimum wage is fiercely disputed. This paper suggests the debate focus not only on the effect of the minimum wage on jobs, but also on the unjust enrichment of monopsonistic employers. By applying the law of unjust enrichment (also referred to as restitution) the government should be able to recover from these employers the amount of food stamps their low paid employees receive at taxpayers' expense. A lawsuit in unjust enrichment should make the public aware that with food stamp payments and other benefits, the government is subsidizing monopsonistic employers.", "corpus_id": 148483710, "venue": "", "year": 2016, "author_names": [ "Candace Saari Kovacic-Fleischer" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "67786819", "title": "The law of the labour relations commission some aspects of Japan's unfair labor practice law", "abstract": "The aim of this article is to explore aspects of Japanese law on unfair labor practices, with reference to the distinctive features of the Labour Relations Commission (LRC) system. Modeled on the National Labor Relations Act in the United States, the Labor Union Act of Japan provides for a system of prohibiting and redressing unfair labor practices. Also, like the National Labor Relations Board in the United States, the Labor Union Act established a system of LRCs as independent administrative agencies in charge of unfair labor practice procedures. These LRCs have some distinctive features, in that the law applied by LRCs as administrative agencies has the nature of administrative law, and that they tend to play the role of adjusting the relationship between labor and management, based on their function of dispute adjustment and their tripartite composition. These features of LRCs appear to have influenced Japan's unfair labor practice law. In this sense, Japanese unfair labor practice law can be said to be \"the law of the LRC.\"", "corpus_id": 67786819, "venue": "", "year": 2015, "author_names": [ "Ryuichi Yamakawa" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "152188603", "title": "Shopping as 'best Practice' Analyzing Walmart's Debated sustainability Policies", "abstract": "Nowadays, companies who want to engage environment friendly consumers increasingly rely on green economy oriented campaigns. Such categories of (ethical) consumers are numerically increasing, and expressions evoking environmental friendliness are becoming particularly trendy. In this vein, words such as 'sustainability' have been variously recontextualized/reframed and have become an 'ought to' for media savvy companies 'with a vision' Walmart, the American multinational retail corporation, being a relevant case in point. It is no accident that, on the first Google page for 'sustainability' 'Walmart' proudly surfaces:http:/corporate.walmart.com/global responsibility/sustainability. The company has made an explicit commitment not just to expand the business but also to improve communities and enhance the sustainability of the products they sell, by encouraging more responsible production practices, while at the same time making product choices more affordable for customers, as reported on its website. However, as the world's largest company, Walmart is an easy target for attack mainly by environmentalists. Sometimes, Walmart gives its critics grounds for some legitimate criticism in a variety of fields ranging from the supply chain emissions to renewable energy and preserving habitat. Such criticism resonates across the media, owing to their 'lack of closure' (Laclau and Mouffe 1985) finalized to offer an unbiased perspective. Against this 'complexified' (Macgilchrist 2007) background, our study aims to examine, from a broadly Multimodal and Positive Discourse Analysis perspective, the Walmart website 'sustainability' pages with their variety of communicative strategies, advertising 'responsible' Walmart positive attitudes to fundamental issues like Energy, Waste, Products and Responsible Sourcing.", "corpus_id": 152188603, "venue": "", "year": 2017, "author_names": [ "Lucia Abbamonte", "Flavia Amorim Meira Cavaliere" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "231779826", "title": "Corporate Social Responsibility Analysis of Walmart in China", "abstract": "The paper will analyze the corporate social responsibility (CSR) of Walmart in China based on ISO 26000 standard. Firstly, the seven aspects of ISO 26000 standard would be included, which is organizational governance, human right, labor practices, environment, fair operating practices, consumer issues and community involvement and development. Then would be a critical analysis according to the CSR investigation. Next the conclusion part would be briefly summarized the what aspects need to improvement. Finally, some recommendation would be given that based on the analysis before.", "corpus_id": 231779826, "venue": "", "year": 2020, "author_names": [ "Xi Chen" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "147276621", "title": "Walmart in South Africa: Precarious Labor and Retail Expansion", "abstract": "In 2011 Walmart's bid to buy a controlling stake in South Africa's Massmart Holdings, Inc. went before the country's Competition Commission and Competition Tribunal, both of which would determine whether to grant the merger outright or to place conditions on it. Massmart Holdings comprises a number of branded subsidiaries in the South African market, including Walmart style general merchandise dealers, electronics retailers, do it yourself building suppliers, and food wholesalers Game, Dion, Builder's Warehouse, and Makro, respectively as well as the more recently acquired food retailer, Cambridge Food. South African unions, most prominently the South African Commercial, Catering and Allied Workers Union (Saccawu) with support from the Global Union Federation UNI Global and, in the United States, the United Food and Commercial Workers, fought the merger.", "corpus_id": 147276621, "venue": "International Labor and Working Class History", "year": 2014, "author_names": [ "Bridget Kenny" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "143286192", "title": "Developing Social Emotional Skills for the Labor Market: The Practice Model", "abstract": "Although there is a general agreement in the literature of the importance of social emotional skills for labor market success, there is little consensus on the specific skills that should be acquired or how and when to teach them. The psychology, economics, policy research, and program implementation literatures all touch on these issues, but they are not sufficiently integrated to provide policy direction. The objective of this paper is to provide a coherent framework and related policies and programs that bridge the psychology, economics, and education literature, specifically that related to skills employers value, non cognitive skills that predict positive labor market outcomes, and skills targeted by psycho educational prevention and intervention programs. The paper uses as its base a list of social emotional skills that employers value, classifies these into eight subgroups (summarized by PRACTICE) then uses the psychology literature drawing from the concepts of psycho social and neuro biological readiness and age appropriate contexts to map the age and context in which each skill subset is developed. The paper uses examples of successful interventions to illustrate the pedagogical process. The paper concludes that the social emotional skills employers value can be effectively taught when aligned with the optimal stage for each skill development, middle childhood is the optimal stage for development of PRACTICE skills, and a broad international evidence base on effective program interventions at the right stage can guide policy makers to incorporate social emotional learning into their school curriculum.", "corpus_id": 143286192, "venue": "", "year": 2014, "author_names": [ "Nancy Guerra", "Kathryn Lynn Modecki", "Wendy Cunningham" ], "n_citations": 42, "n_key_citations": 2, "score": 1 }, { "doc_id": "158203874", "title": "Overcoming Collective Action Problems Facing Chinese Workers: Lessons from Four Protests against Walmart", "abstract": "In contrast to various structural accounts of collective inaction or short lived contention of Chinese workers, the authors take an agency centered approach to explain how the few sustained labor protests during closure bargaining develop against all odds. They suggest that workers' capacity to resolve collective action problems is essential to understanding why a few contending workers are able to sustain protests whereas many others fail to do so. They argue that workplace representatives and external labor activists are crucial for helping Chinese workers resolve the collective action problems that prevent the formation of sustained labor protests. Their comparative analysis of four protests against Walmart store closures including one unusually long, one relatively sustained, and two short lived shows how presence and strategic capacity of workplace representatives and external labor activists shape protest duration. The authors conclude by discussing lessons learned from these cases of closure bargaining for future development of labor contention in China.", "corpus_id": 158203874, "venue": "", "year": 2018, "author_names": [ "Chunyun Li", "Mingwei Liu" ], "n_citations": 13, "n_key_citations": 0, "score": 0 }, { "doc_id": "153595530", "title": "Political Bias in NLRB Unfair Labor Practice Decisions", "abstract": "Previous research has suggested that U.S. presidents appoint members to the National Labor Relations Board who reflect the administration's own union management predilections. No adequate empirical evidence has yet been reported, however, to show that, once appointed, Board members act in a biased manner. The present study develops and tests a choice model of Board member decisions in selected unfair labor practice cases over the 1954 77 period. The evidence strongly supports the popular belief that Board decisions are heavily dependent upon shifting political winds.", "corpus_id": 153595530, "venue": "", "year": 1982, "author_names": [ "William N Cooke", "Frederick H Gautschi" ], "n_citations": 39, "n_key_citations": 3, "score": 0 } ]

[ { "doc_id": "9534458", "title": "Early, involuntary top down guidance of attention from working memory.", "abstract": "Four experiments explored the interrelations between working memory, attention, and eye movements. Observers had to identify a tilted line amongst vertical distractors. Each line was surrounded by a colored shape that could be precued by a matching item held in memory. Relative to a neutral baseline, in which no shapes matched the memory item, search was more efficient when the memory cue matched the shape containing the target, and it was less efficient when the cued stimulus contained a distractor. Cuing affected the shortest reaction times and the first saccade in search. The effect occurred even when the memory cue was always invalid but not when the cue did not have to be held in memory. There was also no evidence for priming effects between consecutive trials. The results suggest that there can be early, involuntary top down directing of attention to a stimulus matching the contents of working memory.", "corpus_id": 9534458, "venue": "Journal of experimental psychology. Human perception and performance", "year": 2005, "author_names": [ "David Soto", "Dietmar Heinke", "Glyn W Humphreys", "Manuel J Blanco" ], "n_citations": 484, "n_key_citations": 62, "score": 1 }, { "doc_id": "145786916", "title": "Involuntary Autobiographical Memories", "abstract": "Results from a diary study of involuntary memories are presented (14 subjects; 7 males, 7 females, average age 23 years) Virtually all of the recorded memories had identifiable cues. Memory access was biased towards (a) mood congruent (b) recent and (c) distinctive (unusual) events. The memories were most frequently rated as emotionally positive and prior rehearsal was rated low. Also, the memories were found to influence current mood consonant with the emotional valence of the memories. Stressful and repetitive involuntary recollections as they are observed in clinical settings subsequent to traumatic events may be viewed as a malignant effect of normal mechanisms of involuntary memories.", "corpus_id": 145786916, "venue": "", "year": 1996, "author_names": [ "Dorthe Berntsen" ], "n_citations": 213, "n_key_citations": 32, "score": 0 }, { "doc_id": "39189897", "title": "Voluntary and involuntary access to autobiographical memory.", "abstract": "Involuntary autobiographical memories recorded in a diary study are compared to voluntary autobiographical memories retrieved in response to verbal cues in a laboratory. The verbal cues were generated to be comparable to the cues that were found to elicit the involuntary memories. The findings demonstrate that voluntary and involuntary retrieval may access different samples of autobiographical memories. The voluntary memories were (1) less specific, (2) more frequently rehearsed, and (3) less emotionally positive than the involuntary memories. A reanalysis of the diary study examined conditions of involuntary retrieval. The memories occurred most frequently when attention was diffuse. They were typically triggered by environmental cues matching central features of the remembered event. The findings are discussed in relation to current models of autobiographical memory.", "corpus_id": 39189897, "venue": "Memory", "year": 1998, "author_names": [ "Dorthe Berntsen" ], "n_citations": 191, "n_key_citations": 32, "score": 0 }, { "doc_id": "12288616", "title": "Involuntary autobiographical memories in and outside the laboratory: How different are they from voluntary autobiographical memories?", "abstract": "In two studies, we compared the characteristics and retrieval times of involuntary and voluntary autobiographical memory under controlled laboratory conditions. A new laboratory task of involuntary autobiographical memories involved detecting vertical lines in a stream of stimuli with horizontal lines (an undemanding vigilance task) and recording any involuntary memories during the session. The majority of these memories were reported as being triggered by irrelevant cue phrases presented on the screen. Voluntary autobiographical memories were sampled via a standard word cue method in Session 2. The results showed that involuntary memories were more specific and were retrieved significantly faster than voluntary memories. They were also more likely to be triggered by negative cues, whereas cue valence did not have any effect on the number of voluntary memories. Furthermore, laboratory involuntary memories did not differ from naturalistic involuntary memories recorded in a diary by the same participants (Study 2) Taken together, these results have important implications for current theories of autobiographical memory, and they open up interesting avenues for future research.", "corpus_id": 12288616, "venue": "Memory cognition", "year": 2008, "author_names": [ "Simone Schlagman", "Lia Kvavilashvili" ], "n_citations": 173, "n_key_citations": 26, "score": 1 }, { "doc_id": "94185", "title": "Out of one's mind: A study of involuntary semantic memories", "abstract": "The study of memories that pop into one's mind without any conscious attempt to retrieve them began only recently. While there are some studies on involuntary autobiographical memories (e.g. research on involuntary semantic memories or mind popping is virtually non existent. The latter is defined as an involuntary conscious occurrence of brief items of one's network of semantic knowledge. The recall of these items (e.g. a word, a name, a tune) is not accompanied by additional contextual information and/or involvement of self a standard feature of involuntary autobiographical memories. The paper reports several diary and questionnaire studies which looked into the nature and frequency of occurrence of these memories. The data show that people do experience involuntary semantic memories which tend to occur without any apparent cues while being engaged in relatively automatic activities. Possible mechanisms of involuntary semantic memories are discussed (e.g. very long term priming) and the results of the study provide information on the possible duration of the priming effects in everyday life. Related theoretical and methodological issues and future avenues of research in this neglected area are outlined.", "corpus_id": 94185, "venue": "Cognitive Psychology", "year": 2004, "author_names": [ "Lia Kvavilashvili", "George Mandler" ], "n_citations": 187, "n_key_citations": 21, "score": 0 }, { "doc_id": "32041360", "title": "The episodic nature of involuntary autobiographical memories", "abstract": "Involuntary autobiographical memories are conscious and unintended recollections of personal experiences. In Study 1, involuntary memories were compared with voluntary word cued memories, both retrieved in naturalistic settings via a self paced procedure. The involuntary memories more frequently referred to specific episodes, came with more physical reaction, had more impact on mood, and dealt with more unusual and less positive events. Study 2 demonstrated that these differences were not due to differences between verbal and nonverbal cues, by using Francis Galton's \"memory walk\" as a nonverbal method to cue voluntary memories. In both studies, systematic differences were found between specific and nonspecific memories. The findings show that the way autobiographical memories are sampled greatly affects the findings and that involuntary retrieval more often provides access to memories of specific episodes and associated emotional states.", "corpus_id": 32041360, "venue": "Memory cognition", "year": 2004, "author_names": [ "Dorthe Berntsen", "Nicoline Marie Hall" ], "n_citations": 189, "n_key_citations": 22, "score": 1 }, { "doc_id": "142167423", "title": "Involuntary Autobiographical Memories: An Introduction to the Unbidden Past", "abstract": "1. Introduction to the unbidden past 2. Theoretical backgrounds 3. Ways to study the unbidden past 4. How special are involuntary autobiographical memories? 5. How do they come to mind? 6. Differences between involuntary and voluntary autobiographical memories 7. Involuntary memories of traumatic events 8. Future and past.", "corpus_id": 142167423, "venue": "", "year": 2009, "author_names": [ "Dorthe Berntsen" ], "n_citations": 185, "n_key_citations": 48, "score": 2 }, { "doc_id": "10859616", "title": "Emotionally charged autobiographical memories across the life span: the recall of happy, sad, traumatic, and involuntary memories.", "abstract": "A sample of 1,241 respondents between 20 and 93 years old were asked their age in their happiest, saddest, most traumatic, most important memory, and most recent involuntary memory. For older respondents, there was a clear bump in the 20s for the most important and happiest memories. In contrast, saddest and most traumatic memories showed a monotonically decreasing retention function. Happy involuntary memories were over twice as common as unhappy ones, and only happy involuntary memories showed a bump in the 20s. Life scripts favoring positive events in young adulthood can account for the findings. Standard accounts of the bump need to be modified, for example, by repression or reduced rehearsal of negative events due to life change or social censure.", "corpus_id": 10859616, "venue": "Psychology and aging", "year": 2002, "author_names": [ "Dorthe Berntsen", "David C Rubin" ], "n_citations": 325, "n_key_citations": 42, "score": 0 }, { "doc_id": "144698623", "title": "The Unbidden Past", "abstract": "Involuntary autobiographical memories are memories of personal experiences that come to mind spontaneously that is, with no preceding attempt at retrieval. They were one of Ebbinghaus's (1885/1964) three basic kinds of memory but have been ignored by modern cognitive psychology. Recent work suggests that involuntary memories are a basic mode of remembering that operates on the same episodic memory system as voluntary (strategic) remembering and thus follows the same rules of encoding and maintenance. Due to their associative and unplanned retrieval, involuntary memories differ from voluntary memories by being more specific, by being less relevant to one's life story and identity, and by involving more emotional reaction at the time of recall. Research on involuntary autobiographical memories has important implications for the understanding of intrusive memories in posttraumatic stress disorder (PTSD)", "corpus_id": 144698623, "venue": "", "year": 2010, "author_names": [ "Dorthe Berntsen" ], "n_citations": 142, "n_key_citations": 26, "score": 1 }, { "doc_id": "32279166", "title": "Involuntary covert orienting is contingent on attentional control settings.", "abstract": "Four experiments tested a new hypothesis that involuntary attention shifts are contingent on the relationship between the properties of the eliciting event and the properties required for task performance. In a variant of the spatial cuing paradigm, the relation between cue property and the property useful in locating the target was systematically manipulated. In Experiment 1, invalid abrupt onset precues produced costs for targets characterized by an abrupt onset but not for targets characterized by a discontinuity in color. In Experiment 2, invalid color precues produced greater costs for color targets than for abrupt onset targets. Experiment 3 provided converging evidence for this pattern. Experiment 4 investigated the boundary conditions and time course for attention shifts elicited by color discontinuities. The results of these experiments suggest that attention capture is contingent on attentional control settings induced by task demands.", "corpus_id": 32279166, "venue": "Journal of experimental psychology. Human perception and performance", "year": 1992, "author_names": [ "Charles L Folk", "Roger W Remington", "James C Johnston" ], "n_citations": 2292, "n_key_citations": 235, "score": 0 } ]

[ { "doc_id": "181605716", "title": "Purposeful delay and academic achievement. A critical review of the Active Procrastination Scale", "abstract": "Abstract A plethora of studies have shown that procrastination is associated with deleterious consequences. Recently, some authors argued that for some students, purposefully delaying tasks might be a beneficial strategy that is positively related with desired outcomes. To measure purposeful delay, the Active Procrastination Scale (APS) developed by Choi and Moran (2009) discriminates between four subcomponents (i.e. outcome satisfaction, preference for pressure, intentional decision and ability to meet deadlines) The objective of the present study is threefold: (1) to corroborate the factor structure of the original APS instrument; (2) to empirically examine whether purposeful delay is associated with better achievement; and (3) to identify a subpopulation of students for whom purposefully delaying tasks is an effective strategy. Using a large sample of 1605 science and engineering students, exploratory factor analysis (EFA) supported a three factor rather than a four factor structure of the APS. Furthermore, results of the regression analyses showed no evidence for the beneficial effect of purposeful delay on student achievement. Finally, we were unable to identify a particular type of student for whom purposefully delaying tasks resulted in increased achievement. Critical considerations on the construct validity of the APS are discussed in greater detail.", "corpus_id": 181605716, "venue": "Learning and Individual Differences", "year": 2019, "author_names": [ "Maarten Pinxten", "Tinne De Laet", "Carolien Van Soom", "Christine M Peeters", "Greet Langie" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "201385499", "title": "Tomorrow Will Always Come, I am a Last Minute Person: Validation of the Active Procrastination Scale Bahasa Indonesia", "abstract": "Procrastination, the habitual delaying of tasks, has long been considered to negatively affect procrastinators. Chu and Choi (2005) however, have newly recognized active procrastination, a form that has positive effects on procrastinators. This study aims to validate the use of the Active Procrastination Scale (APS) in bahasa Indonesia. In this validation, 239 undergraduate students completed online questionnaires consisting of the APS and other measurements (GPA, Pure Procrastination Scale (PPS) Academic Motivation Scale (AMS) and International Personality Item Pool (IPIP 50 item) in Indonesian. The data was analyzed using confirmatory factor analysis (CFA) exploratory factor analysis (EFA) reliability analysis, intra correlation analysis, and correlation analysis with other criteria. Both CFA and EFA revealed that all items matched the same factors as Choi and Moran (2009)'s original design (RMSEA 0.08, GFI 0.9, CR 0.7, AVE 0.5) In addition, all dimensions were reliable (CITC 0.3, a 0.6) Meanwhile, intra correlation analysis indicated that each dimension correlated with all others, in keeping with previous findings. The same findings were also found in correlation analysis. Each dimension showed the same correlation patterns with other criteria as the prior findings. In conclusion, the APS Bahasa Indonesia is a valid procrastination measurement. Besok Pasti akan Datang, Saya adalah Seorang \"Last Minute\" Validasi Active Procrastination Scale Bahasa Indonesia", "corpus_id": 201385499, "venue": "Makara Human Behavior Studies in Asia", "year": 2019, "author_names": [ "Cynthia Vivian Purwanto", "Lina Natalya" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "204962299", "title": "Determining Psychometric Properties of New Active Procrastination Scale and Passive Procrastination Scale (Running Head: \"psychometric properties of NAPS and PPS)", "abstract": "The study was planned to determine the psychometric properties of New Active Procrastination Scale and Passive Procrastination Scale. The phenomenon of procrastination has not been extensively explored in Pakistani setting. Most of the available scales in local setting focused on negative aspect of procrastination so as there was a need to have a sound measure to assess level and type of procrastination. Overall 80 adolescents selected through convenient sampling approach participated in study. Findings revealed high internal consistency of NAPS and PPS and also substantiated the theoretically predicted relationship of NAPS and PPS with other variables. Study not only highlighted the significance of the construct and measures but also discussed the potential limitations and future recommendations of the study.", "corpus_id": 204962299, "venue": "", "year": 2019, "author_names": [ "Dr Sadia Aziz", "Dr Naeem Tariq" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "198910688", "title": "The role of personality traits and need for cognition in active procrastination.", "abstract": "Recent research has differentiated between active and passive procrastination, with the former considered to be beneficial for learning and the latter considered to be harmful. Studies have shown that both personality and cognitive factors are important in students' active procrastination. This study examines how interactions between the Big Five personality traits and the need for cognition affect students' active procrastination. The hypotheses were tested empirically using cross sectional data collected from 307 university students in China. After controlling for age, a hierarchical regression analysis revealed that extraversion was a positive predictor of active procrastination, and that agreeableness and emotional instability were negative predictors of active procrastination. No significant interaction effects were found between personality traits and need for cognition. The implications of the findings are discussed.", "corpus_id": 198910688, "venue": "Acta psychologica", "year": 2019, "author_names": [ "Mingming Zhou" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "210499798", "title": "Pre service teacher's self regulated learning, active procrastination and goal orientation: A path analysis", "abstract": "Increasing competition of modern day has evolved as a threat to students' academic achievement. When students postpone some actions to future, they involve in procrastination. Researchers have viewed procrastination as a common impediment of academic achievement and wellbeing of students (Steel, 2007) Procrastination can be defined as \"a trait or behavioural disposition or delay in performing a task or making decisions\" (Milgram et al. 1998; Haycock et al. 1998; Kachgal et al. 2001) Contrasting to this, active procrastination is \"an intentional decision to procrastinate in order to cope and focus on to the task at hand and experience performance pressure\" What is the student's awareness about their own learning; are they becoming master of this and are they trying for lifelong learning. These are the few questions before today's students, which are answered by self regulated learning (Jeyavel Kadhiravan, 2013) Another important motivational variable under research in the past decade is goal orientation. It is one's goal preference in achievement setting. It can be expected that motivated students won't entertain in procrastination. This study made an attempt to find out the impact of pre service teachers' goal orientation and self regulated learning on their active procrastination. 145 students (72 males, 73 females) studying in two colleges of Education in Kalaburagi city, Karnataka state, India are the sample of this study. Structural Equation Modeling (SEM) was executed through AMOS software. The findings were analyzed based on the hypothesized structural model with good model fit and revealed that active procrastination and performance avoidance orientation are the negative predictor of pre service teachers' organizing and transforming SRL strategy and their environmental structuring. Whereas, active procrastination and learning orientation have predicted positively organizing and transforming SRL strategy and environmental structuring.", "corpus_id": 210499798, "venue": "", "year": 2019, "author_names": [ "Jeyavel Sundaramoorthy" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "141067619", "title": "A critique of the construct validity of active procrastination", "abstract": "Abstract Although research demonstrates that procrastination is an instance of self regulation failure with deleterious consequences, Chu and Choi (2005) have defined a new construct called active procrastination. Active procrastination is the deliberate deferral of tasks to the last minute resulting in positive outcomes despite the delay. The present study examined and challenged the construct validity of active procrastination. We used key defining characteristics of procrastination (e.g. self regulation, intention action gap) correlates (e.g. self efficacy beliefs, conscientiousness) and related outcomes (e.g. stress, depression) as identified in the extant research literature to re examine the relations that define the construct's nomological network. Results revealed that active procrastination is heterogeneous in nature consisting of two theoretically and empirically distinct constructs: purposeful and arousal delay. Correlations and a Principle Components Analysis failed to replicate the nomological network of active procrastination demonstrated in previous research, and we argue that it is more appropriately construed as a deliberate delay that is purposeful, not procrastination. Limitations associated with the active procrastination construct, empirical evidence and the corresponding inferences in developing the Active Procrastination Scale are discussed.", "corpus_id": 141067619, "venue": "", "year": 2018, "author_names": [ "Shamarukh F Chowdhury", "Timothy A Pychyl" ], "n_citations": 23, "n_key_citations": 1, "score": 1 }, { "doc_id": "219271607", "title": "Translation, Adaptation and Cross Language Validation of New Active Procrastination Scale and Passive Procrastination Scale", "abstract": "Translation, Adaptation and Cross Language Validation of New Active Procrastination Scale and Passive Procrastination Scale Abstract The present study was carried out with an objective to translate and validate New Active Procrastination Scale (NAPS) and Passive Procrastination Scale (PPS) into Urdu as both the constructs are slightly new and there were no translated measures available that had been", "corpus_id": 219271607, "venue": "", "year": 2019, "author_names": [ "Saadia Aziz", "Naeem Tariq" ], "n_citations": 2, "n_key_citations": 1, "score": 1 }, { "doc_id": "149040683", "title": "Active procrastination and creative ideation: The mediating role of creative self efficacy", "abstract": "Abstract The present study aimed to examine the mediating role of creative self efficacy (CSE) in the relationship between active procrastination and creative ideation. Participants were 853 undergraduate students (37% male; aged 18 27 years, M 20.30 years, SD 1.28 years) from eight universities in China. Data were collected using the New Active Procrastination Scale, the Short Scale of Creative Self, and the Runco Ideational Behavior Scale. Correlation results indicated that active procrastination, CSE, and creative ideation were positively associated with each other. Multiple mediation analysis indicated that CSE mediated the relationship between active procrastination and creative ideation. These findings suggest that CSE could underlie the effect of active procrastination on individuals' creative ideation. Theoretical and practical implications of the findings are discussed.", "corpus_id": 149040683, "venue": "", "year": 2017, "author_names": [ "Wenling Liu", "Yangu Pan", "Xiaoman Luo", "Lixia Wang", "Weiguo Pang" ], "n_citations": 19, "n_key_citations": 1, "score": 0 }, { "doc_id": "149827293", "title": "Comparing effects of active and passive procrastination: A field study of behavioral delay", "abstract": "Abstract Time is the one resource we cannot recoup. Nevertheless, as many as 20% of people problematically procrastinate. Controversy exists as to the existence of two types of procrastination; the traditional maladaptive type where behavior is delayed unintentionally, despite known risks of disadvantage to performance and/or personal comfort (passive procrastination) and an adaptive type where behavior is intentionally delayed as a means of enhancing motivation, while not disadvantageous to valued outcomes (active procrastination) Few studies to date, however, have longitudinally observed delay in different types of procrastinators. We tracked progress on an undergraduate assignment over two weeks to determine the ability of the two theorized procrastination types to predict behavioral delay. We found scores on passive procrastination predicted markedly different assignment completion trajectories, with higher scorers delaying assignment completion. However, active procrastination did not predict delay. This study demonstrates a novel and robust method for measuring behavioral delay, adds to evidence that active procrastination does not contribute to behavioral delay, and thereby raises doubts as to the construct validity and/or measurement of active procrastination.", "corpus_id": 149827293, "venue": "Personality and Individual Differences", "year": 2019, "author_names": [ "Jason Wessel", "Graham Bradley", "Michelle Hood" ], "n_citations": 11, "n_key_citations": 0, "score": 0 }, { "doc_id": "55828388", "title": "Relationships between Motivational Beliefs and Active Procrastination: The Mediating Role of Self Regulation", "abstract": "This study examined the mediating role of self regulation strategies in the relationships between motivational beliefs (self efficacy, intrinsic goal orientation, and extrinsic goal orientation) and active procrastination. A total of 426 pre service teachers studying in colleges of education in Northern Nigeria participated in the study. A descriptive correlation research design was employed to address the research objectives. Two instruments, namely the 'Motivated Strategies for Learning Questionnaire (MSLQ) and 'Active Procrastination Scale' were utilized to assess respondent's levels of procrastination, motivational beliefs, and self regulation. Pearson correlation and Structural Equation Modeling (SEM) were conducted to investigate the relationship between the motivational beliefs variables and active procrastination among the participants. Finding from the study indicates that the respondents demonstrate a moderate level of active procrastination. Findings also revealed that there were significant relationships between respondents' motivational beliefs (self efficacy, intrinsic goal orientation, and extrinsic goal orientation) and active procrastination. Analysis using SEM indicated that there were indirect effects of self efficacy and extrinsic goal orientation on active procrastination through self regulation strategies as the mediator. Findings further show that there is no significant causal relationship between intrinsic goal orientation and active procrastination. Implications of the study and suggestions have also been offered.", "corpus_id": 55828388, "venue": "", "year": 2017, "author_names": [ "Ali Abdullahi Taura" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "214065245", "title": "Quantum Confinement in the Spectral Response of n Doped Germanium Quantum Dots Embedded in an Amorphous Si Layer for Quantum Dot Based Solar Cells", "abstract": "Quantum dot solar cells are based on the concept of harvesting different parts of the solar light spectrum with a single, cheap semiconductor by simply changing the size of the nanoparticles. Of th.", "corpus_id": 214065245, "venue": "", "year": 2020, "author_names": [ "Jacopo Parravicini", "Francesco Di Trapani", "Michael D Nelson", "Zachary T Rex", "Ryan Beiter", "Tiziano Catelani", "Maurizio Acciarri", "Alessandro Podesta", "Cristina Lenardi", "Simona Binetti", "Marcel Di Vece" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "121749374", "title": "Spectral response and diffusion length studies of amorphous, polycrystalline, ribbon, epitaxial, and single crystal silicon MIS solar cells", "abstract": "Spectral response and diffusion length characteristics of the various MIS cells developed at Rutgers and previously reported in the literature have been investigated. The cells, designated according to the type of Si substrate used, appear in the following descending order based on the above studies: (1) Monsanto single crystal Si with a peak quantum efficiency (QE) of 87.4% and a diffusion length (Ln) of 70 mm, (2) Wacker polycrystalline Si, peak QE=82.8% Ln=60 mm, (3) IBM ribbon Si, (4) epitaxial Si, (5) Mobil Tyco EFG ribbon Si, and (6) amorphous Si (Plasma Physics Corp. Theoretical plots of quantum efficiency and short circuit current density are shown to be in reasonable agreement with experimental results. The enhanced ultraviolet response of the MIS cell compared to that of a commercial N/P junction cell is demonstrated even though the latter device has a peak QE of almost 100% and an Ln value of 184 mm. The spectral studies lend support to the conclusions derived from the previously measured el.", "corpus_id": 121749374, "venue": "", "year": 1979, "author_names": [ "Sandwip K Dey", "William A Anderson", "Alan E Delahoy", "Christophe Cartier" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "54444337", "title": "Spectral Response Optimization of Polycrystalline Black Silicon Solar Cell by Reactive Ion Etching Combined with PERC Technology", "abstract": "Reactive ion etching technology was combined with passivated emitter rear cell technology to reduce the reflectance and transmittance of incident light and improve the spectral response of polycrystalline silicon solar cell. Preconditioning with acid solution can induce the formation of worm like structures on the front surface, which could bring about the reduction of reflectance and enhancement of spectral response in the visible range. Optimization of the capping layer thickness on the rear side can enhance the internal reflection, which will decrease the transmittance and promote the spectral response in long wavelength range.", "corpus_id": 54444337, "venue": "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC 34th EU PVSEC)", "year": 2018, "author_names": [ "Shude Zhang", "Hongqiang Qian", "Jiaqi Peng", "Qingzhu Wei", "Zhichun Ni" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "54214415", "title": "Interfacial spectral response under voltage and light bias to analyse low voltage in amorphous crystalline silicon heterojunction solar cell with S shape characteristics", "abstract": "The heterojunction silicon solar cells displaying two different open circuit voltages and having S shape light current density voltage characteristics are analyzed by observing change in quantum efficiency (QE) with voltage and light bias conditions. With forward bias voltage close to (and beyond) the S shape region, the QE is reduced uniformly in all the regions, due to dominance of barrier over junction field for collection of holes. Under white light bias along with the voltage biasing close to the S shape characteristics, an improvement of QE is observed due to saturation of defects at the interface and enhancement of photoconductivity of the amorphous Si layers. The cell with small open circuit voltage showed considerable improvement in QE from interfacial region (e.g. in the short and long wavelength region) while response in the bulk region (intermediate wavelength region) remains flat.", "corpus_id": 54214415, "venue": "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC 34th EU PVSEC)", "year": 2018, "author_names": [ "Sapna Mudgal", "Son Pal Singh", "Vamsi Krishna Komarala" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "22229", "title": "Relating photovoltaic output and spectral response of amorphous, polycrystalline, ribbon, epitaxial and single crystal MIS solar cells", "abstract": "Spectral response and diffusion length characteristics of the various MIS cells developed at Rutgers and previously reported in the literature have been investigated. The cells, designated according to the type of Si substrate used, appear in the following descending order based on the above studies: (1) Monsanto single crystal Si with a peak quantum efficiency (Q.E. of 87.4% and a diffusion length (Ln) of 70 um, (2) Wacker polycrystalline Si, peak Q.E. 82.8% Ln= 60 um, (3) IBM ribbon Si, (4) Epitaxial Si, (5) Mobil Tyco EFG ribbon Si and (6) amorphous Si. The Q.E. of the Monsanto Si base line cell is shown to be adequately explained in terms of the wavelength dependence of the collection efficiency and the transmittance of the barrier metal. Good agreement is also shown between theoretical and experimental plots of short circuit current density (Jsc) versus Ln. The Wacker cell shows best short wavelength response of all the cells studied including a commercial p n cell having a peak Q.E. of 100% and Ln= 184 um.", "corpus_id": 22229, "venue": "1978 International Electron Devices Meeting", "year": 1978, "author_names": [ "Sandwip K Dey", "William A Anderson", "Alan E Delahoy", "Christophe Cartier" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "218563902", "title": "The Photovoltaic Cells Spectral Response and Photocurrent Seasonal Variations", "abstract": "The seasonal variations of solar photovoltaic cells photocurrent under cloudless conditions are analyzed. This analysis is done by using models of the absorption of solar radiation in the atmosphere and the spectral response of various types of solar cells. The problems of determining the atmospheric model parameters for calculating seasonal variations in absorption are indicated. A simple model that describes the effects of degradation and regeneration of photosensitive material is proposed to describe peculiarities of seasonal variations in the photocurrent of amorphous silicon cells.", "corpus_id": 218563902, "venue": "2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO)", "year": 2020, "author_names": [ "A L Bozhenko", "Yuri Y Dymytrov", "Vladimir I Kubov", "R M Kubova" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "225154731", "title": "High performance high temperature solar blind photodetector based on polycrystalline Ga2O3 film", "abstract": "Abstract In this paper, high temperature solar blind photodetectors were fabricated based on polycrystalline Ga2O3 (poly Ga2O3) film which was prepared by annealing amorphous Ga2O3 (a Ga2O3) film in oxygen atmosphere. The effects of annealing temperature on the properties of the material and the performances of the corresponding Metal semiconductor metal photodetector were investigated. The main factors affecting device performance are attributed to the oxygen vacancy defect concentration in Ga2O3 and the effective Schottky barrier height and width between gold and Ga2O3. We found that the detector based on 650 degC annealed poly Ga2O3 showed the best solar blind detection photoelectric performance and good thermal stability. More interestingly, the device has fast response recovery speed (0.16 s) low dark current =0.1 nA) and high photo to dark current ratio =97) at 200 degC high temperature operation. These performances are even better than the reported high temperature photodetectors based on high quality crystal Ga2O3 thin film or Ga2O3 bulk. Besides, our method that avoid direct high temperature growth of poly Ga2O3 and may be beneficial to its commercial large area production and further cost reduction.", "corpus_id": 225154731, "venue": "", "year": 2020, "author_names": [ "Hai-tao Zhou", "Lujia Cong", "Jiangang Ma", "Ming-Zhu Chen", "Dongyu Song", "Hong-bin Wang", "Peng Li", "Bingsheng Li", "Haiyang Xu", "Yi-chun Liu" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "97471514", "title": "Development of a very fast spectral response measurement system for analysis of hydrogenated amorphous silicon solar cells and modules", "abstract": "Abstract An important requirement for a very fast spectral response measurement system is the simultaneous illumination of the solar cell at multiple well defined wavelengths. Nowadays this can be done by means of light emitting diodes (LEDs) available for a multitude of wavelengths. For the purpose to measure the spectral response (SR) of amorphous silicon solar cells a detailed characterization of LEDs emitting in the wavelength range from 300 nm to 800 nm was performed. In the here developed equipment the LED illumination is modulated in the frequency range from 100 Hz to 200 Hz and the current generated by each LED is analyzed by a Fast Fourier Transform (FFT) to determine the current component corresponding to each wavelength. The equipment provides a signal to noise ratio of 2 4 orders of magnitude for individual wavelengths resulting in a precise measurement of the SR over the whole wavelength range. The difference of the short circuit current determined from the SR is less than 1% in comparison to a conventional system with monochromator.", "corpus_id": 97471514, "venue": "", "year": 2013, "author_names": [ "J A Rodriguez", "Montserrat Fortes", "Cesar Alberte", "Michael Vetter", "Jordi S Andreu" ], "n_citations": 16, "n_key_citations": 1, "score": 0 }, { "doc_id": "225493587", "title": "Phase dependent radiation hardness and performance analysis of amorphous and polycrystalline Ga2O3 solar blind photodetector against swift heavy ion irradiation", "abstract": "Solar blind photodetectors are critically important for civil and military applications. Several of these applications, such as space exploration and nuclear energy infrastructure, demand the use of a photodetector under extreme environments. In this paper, we have studied the radiation hardness and device performance of amorphous and polycrystalline gallium oxide thin films against heavy ion (Ag7+ irradiation with a high energy of 100 MeV. Gallium oxide thin films show great tenacity against massive and highly energetic ions. The amorphous and polycrystalline phases undergo structural and morphological changes that initially induce degradation in the device performance. Nano pore like structures are formed in the amorphous film, while the polycrystalline film shows the destruction of large crystallites. The responsivity of the photodetector device reduces fourfold in the amorphous phase; however, a sixfold reduction in the performance is observed in the polycrystalline phase of the gallium oxide photodetector. The degradation is attributed to the annealing of pre existing optical defects that are otherwise responsible for the huge photoconductive gain in the detector and confirmed by photoluminescence studies. The effect of self annealing at room temperature and annealing at moderate temperature is investigated to recover the irradiated photodetector devices. Partial recovery in the polycrystalline based photodetector and two orders of magnitude enhanced responsivity and an almost twice faster response time compared to the control photodetectors in the amorphous phase are observed. This work investigates the effect of heavy and energetic ions on the performance of gallium oxide based solar blind photodetector and provides the guideline to use high energy irradiation as a tool for defect engineering.", "corpus_id": 225493587, "venue": "", "year": 2020, "author_names": [ "Damanpreet Kaur", "Pargam Vashishtha", "Saif A Khan", "Pawan Kumar Kulriya", "Govind Gupta", "Mukesh Kumar" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "56156245", "title": "Enhanced spectral response by silicon nitride index matching layer in amorphous silicon thin film solar cells", "abstract": "Abstract We employed the low temperature hydrogenated amorphous silicon nitride (a SiN x :H) prepared by plasma enhanced chemical vapor deposition as a refractive index n matching layers in a silicon based thin film solar cell between glass n 1.5) and the transparent conducting oxide n 2) By varying the stoichiometry, refractive index and thickness of the a SiN x :H layers, we enhanced the spectral response and efficiency of the hydrogenated amorphous silicon thin film solar cells. The refractive index of a SiN x :H was reduced from 2.32 to 1.78. Optimizing the a SiN x :H thickness to 80 nm increased the J SC from 8.3 to 9.8 mA/cm 2 and the corresponding cell efficiency increased from 4.5 to 5.3% as compared to the cell without the a SiN x :H index matching layer on planar substrate. The a SiN x :H layers with graded refractive indices were effective for enhancing the cell performance.", "corpus_id": 56156245, "venue": "", "year": 2012, "author_names": [ "Ching-Yi Hsu", "Y P Lin", "Hung-Jung Hsu", "Chin-Chung Tsai" ], "n_citations": 11, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "139888954", "title": "Additive Manufacturing of ceramic components by Digital Light Processing: A comparison between the \"bottom up\" and the \"top down\" approaches", "abstract": "Abstract A systematic study of the additive manufacturing of complex ceramic objects was carried out using two different Digital Light Processing (DLP) approaches, the \"bottom up\" and \"top down\" ones, employing the same projector as light source and a photosensitive Al2O3 based ceramic slurry. Cylindrical periodic architectures having different macro porosity, as well a bulk (dense) component in the form of a disk, were designed and additively manufactured with the two printers employing similar printing conditions. In the \"bottom up\" approach, the periodic detachment of the part being manufactured from the bottom surface of the vat, to enable the insertion of a fresh layer of slurry, introduced stresses and deformations in the component, leading to several problems. In the \"top down\" approach, the main issue is that the thickness of the printed slices is not precise and constant, due to the difficulty of the viscous slurry to uniformly wet and coat the already printed layers.", "corpus_id": 139888954, "venue": "Journal of the European Ceramic Society", "year": 2019, "author_names": [ "Oscar Santoliquido", "Paolo Colombo", "Alberto Ortona" ], "n_citations": 45, "n_key_citations": 0, "score": 1 }, { "doc_id": "225426636", "title": "Process Data Based Knowledge Discovery in Additive Manufacturing of Ceramic Materials by Multi Material Jetting (CerAM MMJ)", "abstract": "Multi material jetting (CerAM MMJ, previously T3DP) enables the additive manufacturing of ceramics, metals, glass and hardmetals, demonstrating comparatively high solid contents of the processed materials. The material is applied drop by drop onto a substrate. The droplets can be adapted to the component to be produced by a large degree of freedom in parameterization. Thus, large volumes can be processed quickly and fine structures can be displayed in detail, based on the droplet size. Data driven methods are applied to build process knowledge and to contribute to the optimization of CerAM MMJ manufacturing processes. As a basis for the computational exploitation of mass sensor data from the technological process chain for manufacturing a component with CerAM MMJ, a data management plan was developed with the help of an engineering workflow. Focusing on the process step of green part production, droplet structures as intermediate products of 3D generation were described by means of droplet height, droplet circularity, the number of ambient satellite particles, as well as the associated standard deviations. First of all, the weighting of the factors influencing the droplet geometry was determined by means of single factor preliminary tests, in order to be able to reduce the number of factors to be considered in the detailed test series. The identification of key influences (falling time, needle lift, rising time, air supply pressure) permitted an optimization of the droplet geometry according to the introduced target characteristics by means of a design of experiments.", "corpus_id": 225426636, "venue": "", "year": 2020, "author_names": [ "Valentin Lang", "Steven Weingarten", "Hajo Wiemer", "Uwe Scheithauer", "Felix Glausch", "R Robert Johne", "Alexander Michaelis", "Steffen Ihlenfeldt" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "228982615", "title": "Additive Manufacturing of Ceramic Components for Facade Construction", "abstract": "Additive Manufacturing (AM) opens new fields of research and development in the architectural design and construction industry, enabling a geometric freedom that can result in the design of components with specific requirements and multifunctional behaviours. This work explores the integration of digital design tools and AM extrusion processes on the production of ceramic architectural components for facade construction, reshaping and expanding the boundaries of what is possible to achieve with masonry construction in a wide range of applications (opaque walls, ventilated sunscreens, and shading systems) Several stoneware prototypes were developed, encompassing different challenges such as the morphology customisation, the versatility of use, the exploitation of the maximum degree of curvature, and the optimisation of structural patterns.", "corpus_id": 228982615, "venue": "", "year": 2020, "author_names": [ "Paulo J S Cruz", "Bruno Figueiredo", "Joao Carvalho", "Tatiana Campos" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "212806360", "title": "Additive manufacturing of ceramic insulators", "abstract": "Abstract Ceramic samples were fabricated from alumina using traditional and additive technologies. Slipcasting technique was used to prepare sample as a traditional way, from pink alumina ceramic slurry with further drying a high temperature treatment of dried preformed ceramics. For preparation of second sample by additive route, stereolythography or SLA 3D printing was used. This sample firstly formed a so called green body ceramic from photopolymerazed slurry, that forms an organo inorganic composite with alumina as a filler. Preformed green body ceramic then undergoes a several stages of heat treatment: first is debinding process, at low temperature to rid of polymer binder and second stage is annealing at higher temperatures to fuse alumina particles together and get desired strength and porosity level. Samples were studied using GE Vtomex c 450 X ray tomography device. It allowed to compare accuracy of geometry, surface roughness and porosity of samples. It is shown that additive technology due to high accuracy of fabrication is a perspective way of precision fabrication of ceramic parts with high quality.", "corpus_id": 212806360, "venue": "", "year": 2020, "author_names": [ "L A Nefedovaa", "V I Ivkov", "Maxim M Sychov", "Serhii Viktorovych Diachenko", "Marina Gravit" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "139544167", "title": "Thermal design, optimization and additive manufacturing of ceramic regular structures to maximize the radiative heat transfer", "abstract": "Abstract The present study is focused on the application of a ceramic tubular high temperature heat exchanger with engineered cellular architectures. Thermal design and optimization to maximise the radiative heat transfer has been investigated both experimentally and computationally. Numerical models were designed involving various arrangements of cells and their different sizes (while the total heat transfer area remains constant) They were 3D printed by Stereolithography (SLA) and subsequently sintered. Heat transfer tests were performed both with a high temperature pressure drop test and by CFD simulations on 2D and 3D models. The computational results agree with the experimental data. We found that radial heat transfer in a tube increases by 160% to 280% if a ceramic lattice is inserted, in respect of an empty tube. Moreover, the arrangement of cells and their size significantly influences the radiative heat transfer showing (for a given array) its top performances above 773 K. Geometries with large cells outside and small cells inside in the radial direction allow radiation to penetrate better through the core of the porous body. With this engineered ceramic lattices it is possible to reduce the tube length by one third to obtain more compact heat exchangers than an empty tubular solution.", "corpus_id": 139544167, "venue": "Materials Design", "year": 2019, "author_names": [ "Marco Pelanconi", "Maurizio Barbato", "Simone Zavattoni", "Gerard L Vignoles", "Alberto Ortona" ], "n_citations": 28, "n_key_citations": 0, "score": 1 }, { "doc_id": "214121059", "title": "Patent Trends in Additive Manufacturing of Ceramic Materials", "abstract": "", "corpus_id": 214121059, "venue": "", "year": 2020, "author_names": [ "Priya Anish Mathews", "Swati Koonisetty", "Sanjay Bhardwaj", "Papiya Biswas", "Roy Johnson", "Padmanabham Gadhe" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "229444073", "title": "Suitability of Biosilicate(r) glass ceramic powder for additive manufacturing of highly porous scaffolds", "abstract": "Abstract The Biosilicate(r) glass ceramic is one of the most promising alternatives to the 45S5 Bioglass(r) in terms of bioactivity, osteoconductivity, osteoinductivity, non cytotoxicity, and antibacterial properties, with significant advantages in the manufacturing of specific components of complex shapes for bone tissue application. Unlike in 45S5 glass, the crystallization does not lead to a degradation of bioactivity. In the present paper, we explored the suitability of Biosilicate(r) for the manufacturing of highly porous scaffolds (porosity of 50 80 vol% by using modern additive manufacturing technologies, such as direct ink writing (DIW) and digital light processing (DLP) Both techniques could be easily applied to fine powders of Biosilicate(r) mixed with fugitive binders. Significant densification of the struts, despite the limited powder packing, could be achieved using liquid assisted sintering, in turn, triggered by the phosphate enriched residual glass phase, already at 1000 degC. The strength to density ratio could be variously tuned (from 1.5 to 9.5 MPa cm3/g) especially with DLP derived samples, by adjusting both the firing temperature and the scaffold topology.", "corpus_id": 229444073, "venue": "", "year": 2020, "author_names": [ "Hamada Elsayed", "Paolo Colombo", "Murilo Camuri Crovace", "Edgar Dutra Zanotto", "Enrico Bernardo" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "221165949", "title": "Stereolithography based additive manufacturing of lithium disilicate glass ceramic for dental applications.", "abstract": "With additive manufacturing (AM) on the rise in industrial production, different industries are looking for a way to benefit from the advantages over conventional manufacturing methods like milling or casting. The layer by layer approach allows the parallel construction of different complex structures with simultaneous customization of the parts, while waste material is significantly reduced. This is especially interesting for the processing of advanced ceramic materials, where often customized and single parts are required. Regarding ceramics, Lithographic Ceramic Manufacturing (LCM) provides the highest surface quality and achievable precision compared to any other AM technologies, which is necessary to meet the high demands from dental industry regarding accuracy and reproducibility. At TU Wien, we achieved expertise in printing different kinds of ceramics and glasses by using specially developed stereolithography printers based on digital light processing (DLP) followed by a thermal debinding and sintering processes. In dental industry, glass ceramic materials are widely used for customized and aesthetic restorations. This work deals with the processing of lithium disilicate via an AM technology, offering highly dense >99% full ceramic parts which meet the requirements for the use as dental restorations. With outstanding mechanical properties of over 400 MPa flexural strength, excellent translucency and accuracy, veneers, crowns and even bridges, especially for the anterior tooth area can be reproducibly printed, debinded and sintered.", "corpus_id": 221165949, "venue": "Materials science engineering. C, Materials for biological applications", "year": 2020, "author_names": [ "Sonja Baumgartner", "Robert J Gmeiner", "Julia Anna Schonherr", "Jurgen Stampfl" ], "n_citations": 13, "n_key_citations": 0, "score": 1 }, { "doc_id": "139636436", "title": "Additive manufacturing of ceramic components", "abstract": "Abstract This chapter deals with the additive manufacturing (AM) of ceramic components. It shows not only the chances of this shaping route in comparison to the conventional dry, (thermo)plastic, or suspension based shaping methods, but also the challenges AM is faced with in powder technology. A variety of direct and indirect AM methods, either powder based or feedstock /suspension based, are introduced. Practical examples are given for chosen technologies, showing which AM method is suitable for which ceramic material. The contribution explains why AM of ceramic components differs from AM of metals or polymers. All ceramic AM processes are powder technological processes and need subsequent debindering and sintering steps following the AM step. The chapter gives a brief market survey and an outlook of the future development trends in this turbulent area.", "corpus_id": 139636436, "venue": "", "year": 2018, "author_names": [ "Tassilo Moritz", "Saeed Maleksaeedi" ], "n_citations": 33, "n_key_citations": 1, "score": 1 }, { "doc_id": "137257306", "title": "Additive Manufacturing of Ceramic Based Materials", "abstract": "This paper offers a review of present achievements in the field of processing of ceramic based materials with complex geometry using the main additive manufacturing (AM) technologies. In AM, the geometrical design of a desired ceramic based component is combined with the materials design. In this way, the fabrication times and the product costs of ceramic based parts with required properties can be substantially reduced. However, dimensional accuracy and surface finish still remain crucial features in today's AM due to the layer by layer formation of the parts. In spite of the fact that significant progress has been made in the development of feedstock materials, the most difficult limitations for AM technologies are the restrictions set by material selection for each AM method and aspects considering the inner architectural design of the manufactured parts. Hence, any future progress in the field of AM should be based on the improvement of the existing technologies or, alternatively, the development of new approaches with an emphasis on parts allowing the near net formation of ceramic structures, while optimizing the design of new materials and of the part architecture.", "corpus_id": 137257306, "venue": "", "year": 2014, "author_names": [ "Nahum Travitzky", "Alexander Bonet", "Benjamin Dermeik", "Tobias Fey", "Ina Filbert-Demut", "Lorenz Schlier", "Tobias Schlordt", "Peter Prof Dr Greil" ], "n_citations": 419, "n_key_citations": 7, "score": 1 } ]

[ { "doc_id": "233392699", "title": "Charecteristic of Fish Cracker with Bone Flour Substitution of Snakehead Fish (Channa striata) as Fortified Calcium", "abstract": "Snakehead fish cracker is widely known in Indonesia, but they are usually made from meat only. Fish bone waste has not been used optimally, therefore it is used as a substitute for making crackers. This experiment aimed to determine the effect of snakehead fish bone flour (SFBF) substitution as calcium fortificant on sensory and physicochemical characteristics of snakehead fish cracker (SFC) This experiment used Complete Randomized Design with four replications for each treatment. Some parameters (physicochemical properties for development volume, water content, protein content, and calcium content as well as sensory properties were determined. The results showed that SFBF content significantly affected (p<0.05) the sensory characteristics of SFC for taste, aroma, colour, and texture, as well as physicochemical characteristics of SFC. Increasing of SFBF content reduce water content and development volume of SFC, but increased protein and calcium content (p<0.05) Substitution of SFBF up to 4% produced SFC, which showed the same development volume with control (no SFBF added) Calcium and protein content of the SFC were 200 mg/100 g and 14.27% respectively. Panellists like the colour and taste of SFC produced by substitution of SFBF up to 12% while only substitution of SFBF up to 8% for aroma and texture.", "corpus_id": 233392699, "venue": "", "year": 2018, "author_names": [ "Hendri Wardana", "Aswita Emmawati", "Krishna Purnawan Candra" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "195727658", "title": "Preparation and properties of fish cracker from different freshwater fish species", "abstract": "Fish crackers made from freshwater fishes is a new dimension in fish cracker industry. In this study, three species were chosen based on their general preference and acceptability by Malaysian. Together with other ingredients, these crackers were prepared using standard formulation and tested in laboratory for their proximate analysis and physical characteristic analysis includes linear expansion, oil absorption, color measurement and texture. Sensory analysis for overall acceptability was carried out among trained panelist in the school. The results for proximate composition and physical analysis showed that there were significant differences (p<0.05) between different species of fish crackers. There were also significant differences (p<0.05) between fish crackers of fried and un fried crackers in terms of its proximate contents and physical appearance. It can be said that the high value of linear expansion increases the absorption of oil by crackers but decreasing their hardness properties. From the sensory evaluation results, the overall acceptability was the Bighead carp fish crackers.", "corpus_id": 195727658, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "53459619", "title": "Shelf Life Prediction of Indonesian Fish Cracker Fried with Mix Palm Sesame Oil using Accelerated Shelf Life Test ASLT", "abstract": "Cracker products, especially fish cracker was known to have short shelf life and easily rancid due to oxidation deterioration. This research was aimed to extend fish cracker shelf life by frying fish cracker using oil which made from mixing palm oil with sesame oil. Shelf life was determined using Accelerated Shelf Life Test (ASLT) with Arrhenius model based on thiobarbituric acid value (TBA) Experiment was conducted at temperature of 25deg C, 35deg C and 45deg C until 15 days to follow oxidation level through TBA value. Results showed that ASLT method could be used to predict shelf life of fried fish cracker with mix palm sesame oil (90 10 v/v) that the main deterioration was due to oxidation reaction. The shelf life of regular fish cracker (fried only with palm oil) was 48 days and those fried by mixed oil was 67 days. Frying fish cracker on mixed oil (palm sesame) was able to extend shelf life up to 19 days by reducing rancidity reaction.", "corpus_id": 53459619, "venue": "", "year": 2017, "author_names": [ "Aldila Din Pangawikan", "Umar Santoso", "", "Pudji Hastuti" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "59156406", "title": "Effects of fish species on the characteristics of fish cracker.", "abstract": "Fish cracker (Thai name: Khao Kieb Pla, also widely known as Keropok) is a popular snack in Thailand and other ASEAN countries. The main ingredients for making fish cracker are tapioca flour, fish meat, and some seasonings. The types of fish used could affect the cracker characteristics. The aim of this research was to investigate the effects of fish type on physical, textural, microstructure and sensory properties of cracker. The characteristics of cracker gel (CG) half finished cracker (HFC) and puffed cracker (PC) prepared from 6 fish species, namely Thunnus tonggol, Decapterus maruadsi, Sardinella gibbosa, Trichiurus lepturus, Priacanthus tayenus, and Nemipterus hexodon, were compared. The CG and PC samples varied in colour and texture. The lowest lightness (L and highest redness (a in both CG and PC, were found with T. tonggol (p< 0.05) while the highest yellowness (b was obtained with D. maruadsi. The CG made with T. lepturus, P. tayenusor N. hexodon showed lower hardness, springiness and cohesiveness than with the other fish species p< 0.05) The pasting behaviors of HFC varied with fish species, and a high linear expansion with a low hardness of PC were obtained in samples with fishes that have a low lipid content. The PC from T. tonggol had low oil absorption while the other fishes gave absorptions similar to each other. Confocal laser scanning micrographs indicated released lipids in CG made with fatty fish. Scanning electron micrographs revealed that the lean fish gave porous puffed products, with comparatively thinwalled pores in the cracker relative to PC from fatty fish. This study demonstrated that fish type affects important characteristics of cracker. Therefore, the quality control of fish cracker will necessarily involve also control of the raw materials, and in particular screening of the fish species.", "corpus_id": 59156406, "venue": "", "year": 2015, "author_names": [ "Thammarat Kaewmanee", "Taewee Karrila", "Soottawat Benjakul" ], "n_citations": 15, "n_key_citations": 1, "score": 0 }, { "doc_id": "234410956", "title": "SHELF LIFE DURING STORAGE IN 4+ 2degC'OF FISH CRACKERS MADE WITH Oncorhynchus mykiss AND Cyprinus carpio", "abstract": "In this study, changes in chemical, microbiological and sensory quality of fish crackers made from rainbow trout (Oncorhynchus mykiss) and carp (Cyprinus carpio) during storage at 4+ 2degC was investigated. The fish cracker composed of fish meat, sugar, salt, egg, sunflower oil, vinegar, butter, flour, wheat starch and stirred until a homogenous mixture of crackers dough was achieved. The mixture was crushed in an extractor and baked in the oven. Chemical quality parameters (pH, Total Volatile Basic Nitrogen and Thiobarbituric Acid) microbiological parameters (Aerobe bacteria) and sensory quality (Flavor, Odor, and Texture) were determined during the storage period. The highest chemical changes and microbiological changes was determined in the crackers prepared by adding carp meat. The lowest sensory parameters was obtained for crackers groups by carp meat. The study results showed that crackers enriched with fish meat, mainly rainbow trout had an appropriate sensory, microbiological and chemical profile for consumption.", "corpus_id": 234410956, "venue": "", "year": 2020, "author_names": [ "Nermin Karaton Kuzgun" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "46731814", "title": "Sensory acceptability and fatty acid profile of fish crackers made from Carassius gibelio", "abstract": "In this study, our aim was to consider the production of fish crackers using Carassius gibelio and to investigate the fatty acid profile and sensory quality of the fish crackers. Fish cracker mixture with a ratio 3.5:1.5 (minced fish/wheat starch) was obtained. Based on the total minced fish and starch level, 1.75% salt, 0.25% black pepper, 2% sunflower oil, 1% baking powder and 10% cold water (4 degC) were added and stirred until a homogenous mixture was obtained. The mixture was compressed in an extractor and baked. The moisture content of minced fish (CMF) cracker dough (CD) and crackers (CCr) was 77.73 0.14% 63.10 2.18% and 7.95 0.67% respectively. The n6/n3 ratio of crackers was 2.61 0.20, PUFA/SFA ratio 2.28 0.06 and DHA/EPA ratio 1.81 0.01. The overall acceptability score obtained by the sensory evaluation of panelists was very high (8.09 0.25)", "corpus_id": 46731814, "venue": "", "year": 2015, "author_names": [ "Levent Izci", "Sengul Bilgin" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "96596494", "title": "Utilization of pre gelatinized tapioca starch in the manufacture of a snackfood, fish cracker 'keropok'", "abstract": "Summary The use of pre gelatinized tapioca starch for the manufacture of 'keropok' by drumdrying has been investigated. Processing variables were examined by using five different slurries of water: starch, with ratios of 50:50, 60:40, 70:30, 80:20, and 90:10 at four different temperatures: 120.2degC, 133.5degC, 143.6degC, and 151.8degC. Only 'keropok' made from a slurry with a water: starch ratio of 70:30 pre gelatinized at 133.5deg, 143.6degC and 151.8degC had linear expansion greater than the minimum acceptable value of 77% 'Keropok' containing pre gelatinized starch produced at 133.5degC was the most acceptable to a sensory panel.", "corpus_id": 96596494, "venue": "", "year": 2007, "author_names": [ "S Y Yu", "Shea L Low" ], "n_citations": 13, "n_key_citations": 1, "score": 0 }, { "doc_id": "83887785", "title": "RELATIONSHIP BETWEEN PHYSICOCHEMICAL PROPERTIES OF STARCHES AND EXPANSION OF FISH CRACKER 'KEROPOK'", "abstract": "The influence of physicochemical properties of starches on expansion of 'keropok' was studied. Swelling power, solubility, and amylose leaching of a starch were dependent on the lipid and protein contents of the starch. The morphology of different starch granules used in 'keropok' gel was observed using scanning electron microscopy. The sizes of swollen starch granules in the gel were quantitatively measured by image analysis. The average length and width of swollen gelatinized sago and tapioca starch granules were significantly higher than that of wheat starch, and consequently, the linear expansion of 'keropok' with wheat starch was lower than those of 'keropok' made with tapioca or sago starches. Linear expansion was positively correlated to swelling power and solubility of the starch. Textural properties of 'keropok' gels with different starches were also measured and found to have correlation with linear expansion of the final products.", "corpus_id": 83887785, "venue": "", "year": 2004, "author_names": [ "Chong Seng Cheow", "Zay Ya Kyaw", "Nazlin K Howell", "M H Dzulkifly" ], "n_citations": 33, "n_key_citations": 1, "score": 0 }, { "doc_id": "95560206", "title": "THE EFFECT OF PRESSURE COOKING ON THE MICROSTRUCTURE AND EXPANSION OF FISH CRACKER 'KEROPOK'", "abstract": "2Faculty of Applied Sciences Universiti Teknologi MARA 40450 Shah Alam Selangor, Malaysia The effect of pressure cooking on microstructure of wheat and tapioca starch in keropok gel and expansion of fried keropok slices were studied. The morphology of the starch granules in the keropok gel at different steaming temperature was examined using scanning electron microscopy (SEM) Linear expansion of keropok made with wheat starch increased with increasing steaming temperature, but that of keropok made with tapioca starch decreased with increasing steaming temperature. The linear expansion results correlate with the sensory evaluation of the products. La microstructure de l'amidon de manioc et de ble dans le keropok gel soumis a une cuisson sous pression est etudiee. La morphologie des granules d'amidon a differentes temperatures est observee. L'expansion lineaire est meilleure pour les keropok a base d'amidon de ble quand la temperature augmente que pour les keropok a base d'amidon de manioc.", "corpus_id": 95560206, "venue": "", "year": 2001, "author_names": [ "Zay Ya Kyaw", "Chong Seng Cheow", "S Y Yu", "M H Dzulkifly" ], "n_citations": 31, "n_key_citations": 2, "score": 0 }, { "doc_id": "135396717", "title": "Amount of Fish, Type of Starch and Steaming Duration on the Quality of Fish Cracker \"Keropok\"", "abstract": "The effect of steaming duration on the linear expansion of \"keropok\" in relation to microstructure of starch in \"keropok\" gel was investigated Tapioca starch (Manihot esculen tus) sago starch (Metroxylon sagu) and wheat starch (Triticum aestivum) were used Linear expansion of \"keropok\" was best when the starch granules were fully gelatinized and expanded to their largest sizes. It was found that 20 to 30 minutes steaming was sufficient to cook the gel (40 mm diameter) When starch granules swell, water is absorbed. The entrapped water molecules contribute to higher linear expansion, due to the steam released from water in the starch granules during frying in oil. \"Keropok\" made from tapioca starch gave the best expansion at 20 30 minutes steaming, and prolonged steaming led to reduced expansion due to fragmentation of the starch granules. The protein contents of native starches and flours were negatively correlated to swelling power of starches and linear expansion of \"keropok\" Among the six varieties of starches and flours, swelling power and solubility of tapioca starch and flour and sago starch were relatively higher than that of cereal starches (wheat starch wheat flour and rice flour) and gave better linear expansions. There was positive correlation between amylose/amylopectin leaching and linear expansion of \"keropok\" The ratio of amylose and amylopectin did not contribute to expansion The centre of the \"keropok\" gel containing 0 10% fish did not gelatinize after steaming for 2 hr. This may be due to the effect of water movement during steaming. The water holding capacity (WHC) of \"keropok\" dough increased with increasing fish content. WHC of the dough with 1 5% fish was significantly (P<0.05) higher than that of the dough with 1 0% fish. Consequently, water movement may be limited by the fish protein starch network in the \"keropok\" dough with high fish content. This was supported by moisture profile analyses. Scanning electron microscopy results showed that the fish protein network started to build up at a fish starch ratio of 1 5:85. Rheological properties changed markedly with different fish starch ratios. The value of storage modulus (G',loss modulus (G\" and complex viscosity (11* in the doughs containing 15% fish and above were noticeably higher than that containing 10% fish due to the fish protein network formation.", "corpus_id": 135396717, "venue": "", "year": 1998, "author_names": [ "Zay Ya Kyaw" ], "n_citations": 1, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "224995867", "title": "Seasonal and spatial variability in surface p CO 2 and air water CO 2 flux in the Chesapeake Bay", "abstract": "", "corpus_id": 224995867, "venue": "", "year": 2020, "author_names": [ "Baoshan Chen", "Wei-Jun Cai", "Jean Brodeur", "Najid Hussain", "Jeremy M Testa", "Wen-fei Ni", "Qian Li" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "198412113", "title": "Environmental controls of surface water pCO2 in different coastal environments: Observations from marine buoys", "abstract": "Abstract Time series of in situ surface seawater partial pressure of CO2 (pCO2) data collected between 2005 and 2017, together with other environmental variables from field or satellite measurements, along the coasts of the United States of America and its territories at different latitudes, are analyzed to separate the temperature effect from the remaining non temperature effects (i.e. biological and other physical effects) on driving surface pCO2. Similar to the findings in the open ocean, on seasonal time scales, the temperature effect (pCO2_T) tends to override the non temperature effect (pCO2_nonT) in modulating surface pCO2 in tropical and subtropical oceanic waters. However, the balance between pCO2_T and pCO2_nonT tends to shift towards pCO2_nonT in temperate zone waters, with a few exceptions in some specific oceanic environments. On interannual time scales, both atmospheric pCO2 and surface pCO2 show significant increasing trends over short time scales (i.e.", "corpus_id": 198412113, "venue": "Continental Shelf Research", "year": 2019, "author_names": [ "Shuang-Tin Chen", "Chuanmin Hu" ], "n_citations": 4, "n_key_citations": 1, "score": 1 }, { "doc_id": "134806124", "title": "Rapid daily change in surface water pCO2 and CO2 evasion: A case study in a subtropical eutrophic lake in Southern USA", "abstract": "Abstract Evasion of carbon dioxide (CO2) from lakes is a significant component in the continental carbon balance, but most current CO2 evasion estimates ignore daily CO2 fluctuations. To test the hypothesis that partial pressure of CO2 (pCO2) and CO2 evasion vary throughout a day due to biological processes driven by solar radiation, we conducted in situ pCO2 and ambient water measurements over eleven 10 h periods in a subtropical, eutrophic shallow lake from November 2017 to May 2018. In situ measurements were performed at 7:00, 10:00, 14:00, and 17:00 Central Standard Time of the United States (CST) and CO2 evasion rates were estimated based on the field pCO2 records. Strong daily declining trends of pCO2 and CO2 flux were found throughout the seasons except for one winter day with unusually low temperatures. At 7:00, 10:00, 14:00, and 17:00 CST of a day, average pCO2 were 1131, 839, 345 and 205 uatm, respectively, while average CO2 fluxes were 80, 67, 10, and 34 mmol m2 h 1. Significant differences were found in average pCO2 between any two measured time points in a day, while significant reductions in CO2 flux were observed between 10:00 and 14:00 CST and between 14:00 and 17:00 CST. pCO2 and CO2 flux dynamics were most likely driven by the air water exchanges during nighttime hours and mainly driven by aquatic metabolism in the daytime. These findings suggest possible large uncertainties in the estimation of carbon emitted from trophic lakes, highlighting the need for further research on diurnal pCO2 fluctuation from different aquatic ecosystems to improve CO2 evasion estimation.", "corpus_id": 134806124, "venue": "Journal of Hydrology", "year": 2019, "author_names": [ "Y Jun Xu", "Zhen Liang Xu", "Rongjie Yang" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "135090579", "title": "Variability of Surface Water p CO 2 in the Canadian Arctic Archipelago From 2010 to 2016", "abstract": "", "corpus_id": 135090579, "venue": "Journal of Geophysical Research: Oceans", "year": 2019, "author_names": [ "M E Ahmed", "B G T Else", "Tonya M Burgers", "Tim N Papakyriakou" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "210249576", "title": "Spatio temporal variability of surface water pCO2 and nutrients in the tropical Pacific from 1981 to 2015", "abstract": "Abstract This study presents a synthesis of surface water partial pressure of CO2 (pCO2) and nutrient observations in the tropical Pacific (20degS 20degN) from 1981 to 2015 and characterizes the spatio temporal variability. We used data from the Surface Ocean CO2 Atlas version 5, which include about 2 million pCO2 measurements in the tropical Pacific. Unlike many previous studies that estimated pCO2 fields from relationships with other variables like sea surface temperature, we developed gridded products of monthly means using a technique to interpolate measured pCO2 values. Large seasonal variation of pCO2 appears in the cold tongue region (EQ 20degS, east of 120degW) corresponding to the seasonal variation of coastal upwelling, and in the off equatorial region where the thermodynamic effect on pCO2 dominates. Consistent with previous findings, pCO2 along the equator declines during El Nino due to weakening of the easterly winds and therefore reduced upwelling of CO2 rich subsurface water. We also quantified the spatial distribution of the long term pCO2 trend beyond the area averaged trend presented previously. The long term trend of pCO2 is positive in all regions with an area average of 1.8 0.1 matm yr 1. However, along the equator the trend is 2 matm yr 1 linked to the Pacific Decadal Oscillation forcing. Using the same methodology, we also analyzed about 20,000 surface nutrient measurements from the Global Ocean Data Analysis Project version 2, World Ocean Database 2013, and ship of opportunity sampling by the National Institute for Environmental Studies, Japan. We present the spatial patterns of reduced surface nutrient concentration in the central to eastern tropics along the equator during El Nino, but there are not enough data to characterize the trends of nutrients in the tropical Pacific. Decorrelation analyses are also applied using covariance between pCO2 anomalies separated by a lag increment for zonal, meridional, and temporal directions. The e folding scale of pCO2 is estimated to be 6deg in latitude, 13deg in longitude, and 2 months with a signal to noise ratio of 4, which are used as input for the interpolation as well as an assessment of ideal observation density and frequency. Decorrelation analyses such as this are critical for evaluating existing observing system design and informing future sampling strategies.", "corpus_id": 210249576, "venue": "Deep Sea Research Part II: Topical Studies in Oceanography", "year": 2019, "author_names": [ "Sayaka Yasunaka", "Shinya Kouketsu", "Peter G Strutton", "A Jefferson Sutton", "A Murata", "S Nakaoka", "Yukihiro Nojiri" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "132051829", "title": "Remote estimation of surface pCO2 on the West Florida Shelf", "abstract": "Abstract Surface pCO2 data from the West Florida Shelf (WFS) have been collected during 25 cruise surveys between 2003 and 2012. The data were scaled up using remote sensing measurements of surface water properties in order to provide a more nearly synoptic map of pCO2 spatial distributions and describe their temporal variations. This investigation involved extensive tests of various model forms through parsimony and Principal Component Analysis, which led to the development of a multi variable empirical surface pCO2 model based on concurrent MODIS (Moderate Resolution Imaging Spectroradiometer) estimates of surface chlorophyll a concentrations (CHL, mg m 3) diffuse light attenuation at 490 nm (Kd_Lee, m 1) and sea surface temperature (SST, degC) Validation using an independent dataset showed a pCO2 Root Mean Square Error (RMSE) of", "corpus_id": 132051829, "venue": "", "year": 2016, "author_names": [ "Shuang-Tin Chen", "Chuanmin Hu", "Robert H Byrne", "Lisa L Robbins", "Bo Yang" ], "n_citations": 21, "n_key_citations": 4, "score": 0 }, { "doc_id": "135222535", "title": "Temporal Variability in Surface Water pCO2 in Adventfjorden (West Spitsbergen) With Emphasis on Physical and Biogeochemical Drivers", "abstract": "Seasonal and interannual variability in surface water partial pressure of CO2 (pCO2) and air sea CO2 fluxes from a West Spitsbergen fjord (IsA Station, Adventfjorden) are presented, and the associated driving forces are evaluated. Marine CO2 system data together with temperature, salinity, and nutrients, were collected at the IsA Station between March 2015 and June 2017. The surface waters were undersaturated in pCO2 with respect to atmospheric pCO2 all year round. The effects of biological activity (primary production/respiration) followed by thermal forcing on pCO2 were the most important drivers on a seasonal scale. The ocean was a sink for atmospheric CO2 with annual air sea CO2 fluxes of 36 2 and 31 2 g C*m *year 1 for 2015 2016 and 2016 2017, respectively, as estimated from the month of April. Waters of an Arctic origin dominated in 2015 and were replaced in 2016 by waters of a transformed Atlantic source. The CO2 uptake rates over the period of Arctic origin waters were significantly higher (2 mmol C*m *day than the rates of the Atlantic origin waters of the following year.", "corpus_id": 135222535, "venue": "", "year": 2018, "author_names": [ "Ylva Ericson", "Eva Falck", "Melissa Chierici", "Agneta Fransson", "Svein Kristiansen", "Stephen Matthew Platt", "Ove Hermansen", "Cathrine Lund Myhre" ], "n_citations": 9, "n_key_citations": 1, "score": 1 }, { "doc_id": "58556056", "title": "Suitability of the shallow water hydrothermal system at Ambitle Island (Papua New Guinea) to study the effect of high pCO2 on coral reefs.", "abstract": "Volcanic CO2 seeps were successfully used to predict coral reef response to ocean acidification, although toxic elements, often characteristic of hydrothermal vents were rarely reported. We measured the physicochemical conditions, seawater carbonate chemistry and trace elements in Tutum Bay, Papua New Guinea. There, intense emission of hydrothermal fluids and CO2 expose the coral reef to a seawater pHT between 7.6 and 7.7. Arsenic and silica were enriched by up to six times in surface seawater, while bottom concentrations were lower and thus similar to coral reefs worldwide. Manganese, cesium, iron and zinc concentrations fell into the range of other coastal environments. Our measurements suggest that Tutum Bay is a suitable site to study the response of coral reefs to high pCO2. Considering that arsenic is a common metal in hydrothermal fluids, its characterization should be included in any study that uses volcanic CO2 seeps as natural laboratories for ocean acidification.", "corpus_id": 58556056, "venue": "Marine pollution bulletin", "year": 2019, "author_names": [ "Thomas Pichler", "T Biscere", "Jeff P Kinch", "Marco Zampighi", "Fanny Houlbreque", "Riccardo Rodolfo-Metalpa" ], "n_citations": 11, "n_key_citations": 2, "score": 0 }, { "doc_id": "129819468", "title": "A mechanistic semi analytical method for remotely sensing sea surface pCO2 in river dominated coastal oceans: A case study from the East China Sea", "abstract": "While satellite remote sensing has become a very useful tool contributing to assessments of sea surface partial pressure of carbon dioxide (pCO2) that subsequently allow quantification of air sea CO2 flux, the application of empirical approaches in coastal oceans has proven challenging owing to the interaction of multiple controlling factors. We propose a \"mechanistic semi analytic algorithm\" (MeSAA) to estimate sea surface pCO2 in river dominated coastal oceans using satellite data. Observed pCO2 can be analytically expressed as the sum of individual components controlled by major factors such as thermodynamics (or temperature) mixing, and biology. With marine carbonate system calculations, temperature and mixing effects can be predicted using thermodynamic principles and by assuming conservative two end member mixing of total dissolved inorganic carbon and total alkalinity (e.g. the Changjiang River and Kuroshio water in the East China Sea, ECS) Next, an integral expression for pCO2 drawdown due to biological effects can be parameterized using the chlorophyll a concentration (chla) We demonstrate the validity and applicability of the algorithm in the ECS during summertime. Sensitivity analysis shows that errors in empirical coefficients and three input satellite parameters (salinity, SST, chla) have limited influence on the algorithm, and satellite derived pCO2 is consistent with underway data, even though no in situ pCO2 data from the ECS shelves was used to train the algorithm. Our algorithm has more physical and biogeochemical mechanistic meaning than empirical methods, and should be applicable to other similar systems.", "corpus_id": 129819468, "venue": "", "year": 2015, "author_names": [ "Yan Bai", "Wei-Jun Cai", "Xianqiang He", "Wei-dong Zhai", "Delu Pan", "Minhan Dai", "Peisong Yu" ], "n_citations": 55, "n_key_citations": 7, "score": 0 }, { "doc_id": "133911194", "title": "Surface Water pCO2 Variations and Sea Air CO2 Fluxes During Summer in the Eastern Canadian Arctic", "abstract": "Based on a 2 year data set, the eastern Canadian Arctic Archipelago and Baffin Bay appear to be a modest summertime sink of atmospheric CO2. We measured surface water CO2 partial pressure (pCO2) salinity, and temperature throughout northern Baffin Bay, Nares Strait, and Lancaster Sound from the CCGS Amundsen during its 2013 and 2014 summer cruises. Surface water pCO2 displayed considerable variability (144 364 matm) but never exceeded atmospheric concentrations, and average calculated CO2 fluxes in 2013 and 2014 were 12 and 3 mmol C m 2 d 1 (into the ocean) respectively. Ancillary measurements of chlorophyll a reveal low summertime productivity in surface waters. Based on total alkalinity and stable oxygen isotopes (d18O) data, a strong riverine signal in northern Nares Strait coincided with relatively high surface pCO2, whereas areas of sea ice melt occur with low surface pCO2. Further assessments, extending the seasonal observation period, are needed to properly constrain both seasonal and annual CO2 fluxes in this region.", "corpus_id": 133911194, "venue": "", "year": 2017, "author_names": [ "Tonya M Burgers", "Lisa A Miller", "Helmuth Thomas", "Brent Else", "Michel Gosselin", "Tim N Papakyriakou" ], "n_citations": 13, "n_key_citations": 1, "score": 1 } ]

[ { "doc_id": "55642024", "title": "Empirical Investigation of a Relationship between Islamic Work Ethics and Work Outcomes", "abstract": "This study was conducted to investigate the effect of Islamic work ethic on work outcomes (job satisfaction, organizational commitment and turnover intention and job involvement) The study used a sample of 100 employees with response rate of 79 percent. The respondents were the employees of two commercial banks of Pakistan. SPSS 16.0 was used to examine the relationship between variables. The empirical testing indicates that Islamic work ethics has positive effects on job satisfaction, organizational commitment and job involvement; whereas there is no significant evidence of the effect of Islamic work ethic on turnover intention. Keywords: Islamic Work Ethics, Job Satisfaction, Organisational Commitment, Job Involvement", "corpus_id": 55642024, "venue": "", "year": 2017, "author_names": [ "Kalim Ullah Bha", "SZahrotush Sholikhah" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213429154", "title": "INTELLECTUAL CAPITAL, ISLAMIC WORK ETHICS AND THE PERFORMANCE OF BUMIPUTERA SMALL AND MEDIUM ENTERPRISES (SMES) EXPERTS' VIEWS", "abstract": "Despite numerous efforts initiated by Malaysian government, Bumiputera entrepreneurs are still considered as incapable to compete with other groups in realizing business success. This study seeks to examine the intellectual capital (IC) and Islamic work ethics (IWE) that contribute to higher performance of SMEs among Bumiputera in Malaysia. In doing so, the measurement instruments are developed based on previous literature reviews and refined by expert validation. Informal interviews were held individually with 13 experts with the aims of gaining relevant and insightful information for IC, IWE and business performance cohesion. From a pilot study of 49 Bumiputera SME entrepreneurs, the findings indicate that intellectual capital components and Islamic work ethics are vital for performance management practices in the firm. Contribution/ Originality: Theoretically, this study generalizes intellectual capital and Islamic work ethics in SME setting and is a preliminary impetus for exploring Bumiputera intellectual capital, Islamic work ethics and business performance. Practically, it provides valuable references for entrepreneurs, giving a prioritized array of crucial resources that allows Bumiputera SMEs to sustain the competitive advantage.", "corpus_id": 213429154, "venue": "", "year": 2019, "author_names": [ "Sakinah Mat Zin", "Ahmad Azrin bin Adnan", "Nik Sarina Nik Md Salleh", "Rosfatihah Che Mat", "Khamisah Abd Manaf", "Mariam Setapa" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "150746561", "title": "Islamic Work Ethics and Organizational Citizenship Behavior Among Muslim Employees in Educational Institutions", "abstract": "In an era where organizational survival depends on gaining every competitive edge, the study of citizenship behavior is particularly relevant. Thus, the success of educational institutions critically depends on the educators' willingness to go beyond the call of duty by exhibiting organizational citizenship behavior (OCB) This chapter aims to investigate the relationship between Islamic work ethics (IWE) and OCB. Religiosity, effort, work obligation, and collectivism were selected as dimensions in IWE. Data were collected from a sample of 130 employees from educational institutions through hands on and online survey. Data were analyzed using SPSS, and multiple regression analysis was used to test the hypotheses. Results revealed that religiosity, effort, and work obligation have a significant positive relationship with OCB. However, collectivism was not related to OCB. It is recommended that for future research, a wider range of respondents should focus on other areas as well and also other work settings.", "corpus_id": 150746561, "venue": "", "year": 2019, "author_names": [ "Zulaiha Ahmad", "Nurul Afiqah Rahim", "Majdah Chulan", "Shahrul Amri Ab Wahab", "Ahmad Nizan Mat Noor" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "204351132", "title": "The Relationship between Islamic Work Ethics and Spiritual Intelligence with Work Life Quality", "abstract": "Background and Aim: Quality of life is a multidimensional subjective concept that has been of interest to humanities researchers in recent years. The purpose of this study was to determine the relationship between Islamic work ethic and spiritual intelligence with quality of work life among faculty members of Islamic Azad University, Behbahan branch. Materials and Methods: This was a descriptive correlational study. The statistical population consisted of all of the full time faculty members, in the second semester of the Academic year 12017 18. Data were collected using Walton's Quality of Work Life, Ali's Islamic Work Ethics, and Sohrabi and Naseri's Spiritual Intelligence Questionnaires. Data were analyzed using Pearson correlation and regression tests by SPSS 22 software. Findings: There was a significant positive relationship between Islamic work ethics and spiritual intelligence (dimensions of transcendent self awareness, patience, forgiveness) and quality of work life (p <0.05) Regression test showed that Islamic work ethic with beta coefficient of 0.40, self knowledge with beta coefficient of 0.33 and patience with beta coefficient of 0.17, were able to predict the teachers' quality of work life, respectively. Research variables accounted for 50% of the changes in the quality of working life. Conclusion: According to the findings, it is recommended that the authorities promote the quality of work life by establishing an ethical atmosphere and encouraging staff to carry out activities based on Islamic teachings as well as aligning values with the organizational mission of the university, provide the ground for enhancing the work life quality of the faculty members. Please cite this article as: Ghashghaeizadeh N. The Relationship between Islamic Work Ethics and Spiritual Intelligence with Work Life Quality. Bioethics Journal 2019; 9(31) 63 71.", "corpus_id": 204351132, "venue": "", "year": 2019, "author_names": [ "Nasroallah Ghashghaeizadeh" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "219834956", "title": "Intelectual capital Islamic work ethics and the performance of Bumiputera small and medium enterprises (SMES) experts views Sakinah Mat Zin [et al.", "abstract": "Despite numerous efforts initiated by Malaysian government, Bumiputera entrepreneurs are still considered as incapable to compete with other groups in realizing business success. This study seeks to examine the intellectual capital (IC) and Islamic work ethics (IWE) that contribute to higher performance of SMEs among Bumiputera in Malaysia. In doing so, the measurement instruments are developed based on previous literature reviews and refined by expert validation. Informal interviews were held individually with 13 experts with the aims of gaining relevant and insightful information for IC, IWE and business performance cohesion. From a pilot study of 49 Bumiputera SME entrepreneurs, the findings indicate that intellectual capital components and Islamic work ethics are vital for performance management practices in the firm. Contribution/ Originality: Theoretically, this study generalizes intellectual capital and Islamic work ethics in SME setting and is a preliminary impetus for exploring Bumiputera intellectual capital, Islamic work ethics and business performance. Practically, it provides valuable references for entrepreneurs, giving a prioritized array of crucial resources that allows Bumiputera SMEs to sustain the competitive advantage.", "corpus_id": 219834956, "venue": "", "year": 2019, "author_names": [ "Sakinah Mat Zin", "Ahmad Azrin bin Adnan", "Nik Sarina Nik Md Salleh", "Rosfatihah Che Mat", "Khamisah Abd Manaf", "Mariam Setapa" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "209455419", "title": "The Effect of Islamic Work Ethics and Organisational Cultural Motivation on OCB and Employee Performance at Bank Aceh Syariah", "abstract": "The purpose of this study was to see how much Islamic work ethics and motivation effected Organisational Citizenship Behaviour (OCB) and employee performance at Bank Aceh Syariah. The population in this study was located in all sharia banking branch offices in Aceh province. There are 14 branches in 27 locations. The study used primary data obtained through interviews and questionnaires. A stratified proposition technique (namely random sampling) Structural Equation Model (SEM) methods and intervening variables were used. The results showed that commitment and loyalty greatly affect the value of employees' work culture at Sharia Bank. Islamic work ethics created in the form of Siddiq, Amanah, Tabligh and Fatanah are the main fundamental principles. Work ethic becomes a mirror of an employee's performance and shows a positive and significant influence on organisational culture. This can create an increase in the cultural performance of a good organisation.", "corpus_id": 209455419, "venue": "", "year": 2019, "author_names": [ "", "Amiur Nuruddin", "Arfan Ikhsan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "159276866", "title": "The Influence of Individual Behaviour and Organizational Commitment Towards the Enhancement of Islamic Work Ethics at Royal Malaysian Air Force", "abstract": "This study examines the influences of individual behaviour and organizational commitment towards the enhancement of Islamic Work Ethics (IWE) at the Royal Malaysian Air Force. It involved 312 respondents of different backgrounds and the data were analysed using descriptive analysis and structural equation modelling (SEM) analysis. The results show that both individual behaviour and organizational commitment have significantly correlated with the enhancement of IWE. The findings could help managers especially of multinational corporations operating in Muslim countries to enhance the company performances by instituting elements of IWE in their organizations. This can be done by promoting the understanding of IWE and providing a conducive environment to practice it.", "corpus_id": 159276866, "venue": "Journal of Business Ethics", "year": 2019, "author_names": [ "Wan Norhasniah Wan Husin", "Nur Farahana Zul Kernain" ], "n_citations": 9, "n_key_citations": 1, "score": 0 }, { "doc_id": "210484423", "title": "Pengaruh Islamic Work Ethics Terhadap Kinerja Karyawan dan OCB pada Perum Perhutani KPH Gundih", "abstract": "Islamic work ethics is the emanation of the faith that comes from the Islamic faith system, which is used as a basic attitude towards work so that it can be built into an Islamic work ethic. Employee performance is the result of work in quality and quantity achieved by an employee in carrying out their functions in accordance with the responsibilities given to him. Organizational citizenship behavior is a noble, altruistic, and productive action or behavior that is shown by employees in an organization. The purpose of this study was to determine the effect of Islamic work ethics on employee performance and OCB (Organizational Citizenship Behavior) at Perum Perhutani KPH Gundih. The research method is descriptive method with the sampling technique used is probability sampling. The population of this research is all employees of Perum Perhutani KPH Gundih. The sample used was 110 employees of Perum Perhutani KPH Gundih. The results of this study indicate that Islamic work ethics has a significant effect on employee performance. Islamic work ethics also significantly influences OCB.", "corpus_id": 210484423, "venue": "", "year": 2019, "author_names": [ "Annisa Sylviana Dewi", "Hm Wahyuddin" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "211548608", "title": "The Impact of Absenteeism and Islamic Work Ethics on Project Delivery in Public Projectized Organizations in the United Arab Emirates (UAE)", "abstract": "It has been argued that absenteeism adversely affects employees' productivity, especially in public sector. As the modern world demands a lot from the employees so the stress levels of the employees were increased and are not able to balance the work and the personal life where the individual is affected physically and psychologically that leads to employee's absenteeism. This adverse impact might be magnified when it occurs in projectized organizations due to the significance of 'time' in fulfilling project objectives. Work ethics might be a feasible solution to reduce this adversity. This study aims to assess of the impact of Islamic work ethics on project managers' absenteeism and consequently the impact of both variables on project delays in public projectized organizations in the United Arab Emirates (UAE) The study deconstructs the concepts of: Islamic work ethics, absenteeism and project scheduling and relies on literature to develop a quantitative scale the measure those three variables. Through the use of a questionnaire, data was collected from 116 project managers that work for public organizations in the UAE. The collected data was analysed through a series of statistical tests and the results show that there is a negative relationship between Islamic work ethics and absenteeism; and a positive relationship between Islamic work ethics and project completion within scheduled time. The main conclusion of this study enhancing work ethics can be a factor that reduces the absenteeism in turn increases the productivity of the organizations through the on time completion of projects. Practitioners might work on creating a work environment that foster positive work ethics.", "corpus_id": 211548608, "venue": "", "year": 2019, "author_names": [ "Noora Rashed Alkeaibi" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "202098914", "title": "The Effect Of Leadership Style, Motivation And Discipline Of Employee Performance With Understanding Of Islamic Work Ethics", "abstract": "The purpose of this study was to examine the Effect of Leadership Style, Motivation and Work Discipline on Employee Performance with Understanding of Islamic Work Ethics as a Moderating Variable Case Study at Koperasi Simpan Pinjam Sejahtera Bersama. The respondents used were 97 employees who worked in the Banten Branch Office. Data is processed using variance based Partial Least Squares (PLS) analysis, with SmartPLS 2.0 software. The results showed that Leadership Style had a significant influence on Employee Understanding of Islamic Work Ethics, Motivation did not significantly influence Employee Understanding of Islamic Work Ethics, Work Discipline did not significantly influence Employee Understanding of Islamic Work Ethics. While leadership style, motivation, and work discipline together have a significant influence on Employee Understanding of Islamic Work Ethics. The results of the moderating analysis (path analysis) show that the Leadership Style has an indirect positive effect on employee performance. Motivation has an indirect negative influence on employee performance. Work Discipline has an indirect positive influence on employee performance. Employee Understanding of Islamic Work Ethics has an indirect positive effect on employee performance. Overall Leadership Style, Motivation, Work Discipline, and Employee Understanding of Islamic Work Ethics together have a positive effect on employee performance.", "corpus_id": 202098914, "venue": "", "year": 2019, "author_names": [ "Angrian Permana", "Muhammad Havidz Aima", "Eny Ariyanto", "Adi Nurmahdi" ], "n_citations": 7, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "216834836", "title": "Effect of Electronic Gadget Usage on Sleep Quality among Medical Students in Chennai", "abstract": "", "corpus_id": 216834836, "venue": "", "year": 2019, "author_names": [ "Sujatha Shanmugasundaram", "N B Swetha", "Srinivasan Gopalakrishnan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "213525622", "title": "The Correlation of Gadget Addiction Level with Sleep Quality to Student in 7 Mataram of Public Primary School in Mataram City and 1 Gunungsari of Public Primary School in West Lombok Regency", "abstract": "", "corpus_id": 213525622, "venue": "", "year": 2019, "author_names": [ "Yofani Laurintia", "Agustine Mahardika", "Anak Agung Ayu Niti Wedayani" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225340929", "title": "DESCRIPTION OF GADGET ADDICTION, SLEEP QUALITY, AND STUDENTS LEARNING ACHIEVEMENT AT SD NEGERI 1 SIDODADI LAWANG IN 2019", "abstract": "In this globalization era, technology is increasing rapidly. One of the technologies is a gadget/device. Gadget users come from various backgrounds, ranging from adults, the elderly, and even children. The Daily Mail reports that 70% of elementary school aged children can easily use a gadget. The use of gadgets can have both positive and negative effects on children. The negative effect of using a gadget is affecting the quality of sleep and learning achievement on children. The study aimed to describe gadget addiction, sleep quality, and learning achievement of children focused on grades 5th and 6th at SD Negeri 1 Sidodadi Lawang. A descriptive study method. The total population of grade 5th and 6th students at SD Negeri 1 Sidodadi Lawang are 96 students. Data were taken by using Smart Addiction Scale, Pittsburgh Sleep Quality Index questionnaires, and students' report cards. The distribution of gadget addiction levels in this study was 21 people (21,9% with a low level, 72 people (75% with a moderate level, and 3 people (3,1% with a high level. There were 73 people (76% with poor sleep quality and 49 people (51% with poor learning achievement. The level of gadget addiction in 5th and 6th grade students at SD Negeri 1 Sidodadi Lawang was dominant in the medium level, sleep quality was dominant in the poor level.", "corpus_id": 225340929, "venue": "", "year": 2020, "author_names": [ "Dimas Cahyo Wibowo", "Della Wahyu Fitriani", "Ananda Febina Kimresti", "Alfan Ahkami", "Isna Sandria Nastiti", "Syarifah Dwi Auliani", "Siti Ermawati", "Sabrina Rizki Andriani", "Sulistiawati Sulistiawati", "Priyo Raharjo" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "210890315", "title": "Electronic gadget Screen time, Sleep Quality Quantity and Academic performance in Medical Students.", "abstract": "", "corpus_id": 210890315, "venue": "The Journal of the Association of Physicians of India", "year": 2020, "author_names": [ "Yeluri Koushik", "Kiran Hs" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "211230714", "title": "The use of gadgets and their relationship to poor sleep quality and social interaction on mid adolescents: a cross sectional study.", "abstract": "Background Mid adolescents dominate the number of gadget users in Indonesia. The use of gadgets to a high intensity can cause various problems such as poor sleep quality and decreased social interaction. The purpose of this study was to analyze the relationship between the intensity of the use of gadgets and the quality of sleep and social interaction in adolescents. Method The research design used was a correlational research study with a cross sectional approach. Through the calculation of the sample, the respondents were 250 adolescents who met the inclusion criteria, namely (1) adolescents aged 15 18 years and (2) teens who owned and used gadgets. The sampling method used simple random sampling by conducting a lottery system in each class. The independent variable was the intensity of using the gadget, while the dependent variable was the quality of sleep and social interaction. Data collection focused on the intensity of gadget use using questionnaires and it was analyzed using the Pittsburgh Sleep Quality Index (PSQI) and the Social Interaction Anxiety Scale (SIAS) The data was analyzed using Spearman's rank correlation with a 0.05. Results The results showed that the intensity of gadget use was positively related to poor sleep quality in adolescents (p <0.001; r 0.555) The intensity of the use of gadgets was also related to social interaction with a negative direction. The higher the intensity of the use of gadgets, the lower the social interaction in adolescents (p 0.001; r 293) Conclusion The use of gadgets in the mid adolescent years is related to sleep disorders as regards the latency and duration of sleep. Adolescents are more likely to engage in social interaction and communication through gadgets than face to face.", "corpus_id": 211230714, "venue": "International journal of adolescent medicine and health", "year": 2020, "author_names": [ "Ilya Krisnana", "Venni Hariani", "Iqlima Dwi Kurnia", "Yuni Sufyanti Arief" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "225202406", "title": "CORRELATION OF GADGETS ADDICTION WITH SLEEP QUALITY IN 4th 6th GRADE STUDENTS AT SDN 01 SRIGADING LAWANG IN 2019", "abstract": "The use of digital technology has increased rapidly. In Indonesia, gadget use by children has become very high and requires special attention. Many effects may occur due to gadget use, one of which is sleep quality disturbance. This study aims to analyze the correlation between gadget addiction and sleep quality in children grades 4 6 SDN 01 Srigading Lawang. This research is an analytic observational study with a cross sectional design in a population of 4 6th graders of SDN 01 Srigading Lawang. A total of 126 students over 130 students were included. Data were collected using two questionnaires, which are Smartphone Addiction Scale and The Pittsburgh Sleep Quality Index, and tested using RxC Contingency. Gadget addiction has a significant correlation with sleep quality with a weak correlation. Children with mild levels of addiction to gadgets had a potential of 2,013 times to have good sleep quality, compared to children with moderate levels of addiction. In contrast, children with severe levels of addiction to gadgets were at risk 12.04 fold to have poor sleep quality compared to the mild level of addiction. There is a significant correlation with a weak correlation between gadget addiction and sleep quality in children grades 4 6 SDN 01 Srigading Lawang.", "corpus_id": 225202406, "venue": "", "year": 2020, "author_names": [ "Agustin J Nanda De Niro", "Annisa Pawitra", "Novia Nurul Faizah", "Rendra Dwi Putra", "Veikha Fakhriya Arfiputri", "Renata Violia Sihombing", "Shabrina Noor Rachmi", "Djohar Nuswantoro", "Ledy Martha" ], "n_citations": 1, "n_key_citations": 1, "score": 0 }, { "doc_id": "203100724", "title": "A Deep Learning Model for Snoring Detection and Vibration Notification Using a Smart Wearable Gadget", "abstract": "Snoring, a form of sleep disordered breathing, interferes with sleep quality and quantity, both for the person who snores and often for the person who sleeps with the snorer. Poor sleep caused by snoring can create significant physical, mental, and economic problems. A simple and natural solution for snoring is to sleep on the side, instead of sleeping on the back. In this project, a deep learning model for snoring detection is developed and the model is transferred to an embedded system referred to as the listener module to automatically detect snoring. A novel wearable gadget is developed to apply a vibration notification on the upper arm until the snorer sleeps on the side. The gadget is rechargeable, and it is wirelessly connected to the listener module using low energy Bluetooth. A smartphone app connected to the listener module using home Wi Fi is developed to log the snoring events with timestamps, and the data can be transferred to a physician for treating and monitoring diseases such as sleep apnea. The snoring detection deep learning model has an accuracy of 96% A prototype system consisting of the listener module, the wearable gadget, and a smartphone app has been developed and tested successfully.", "corpus_id": 203100724, "venue": "Electronics", "year": 2019, "author_names": [ "Tareq Hasan Khan" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "202126302", "title": "HUBUNGAN INTENSITAS PENGGUNAAN GADGET DENGAN KUALITAS TIDUR DAN INTERAKSI SOSIAL PADA REMAJA DI SMA NEGERI 7 SURABAYA", "abstract": "Di era globalisasi ini, remaja sering menghabiskan waktu dengan menggunakan gadgetnya, seperti dimalam hari sebelum tidur, kebiasaan ini akan mengganggu tidur dan menyebabkan kualitas tidur yang buruk. Remaja yang tidak dapat dipisahkan dari gadget akan membuat mereka kurang dan malas untuk berinteraksi secara sosial, jika hal ini terjadi terus menerus akan berdampak kurang baik pada interaksi sosialnya. Metode: Desain dalam penelitian ini adalah cross sectional dengan Simple Random sampling. Popuasi dalam penelitian ini adalah 711 orang. Hasil perhitungan Lemeshow, didapatkan sampel sebesar 250 remaja dengan usia 15 18 tahun. Kriteria inklusi pada penelitian ini adalah remaja yang memiliki gadget, sedangkan kriteria eksklusi pada penelitian ini adalah siswa yang tidak masuk sekolah dengan alasan apapun. Pengumpulan data menggunakan kuesioner intensitas penggunaan gadget, Piitsburgh Sleep Quality Index (PSQI) dan Social Interaction Anxiety Scale (SIAS) serta dianalisis dengan uji Spearman dengan derajat signifikan p 0,05. Variabel independen dari penelitian ini adalah Penggunaan Gadget pada Remaja, variabel dependen dari penelitian ini adalah Kualitas Tidur dan Interaksi Sosial. Hasil: Hasil penelitian menunjukkan terdapat hubungan yang signifikan antara intensitas penggunaan gadget dengan kualitas tidur dan interaksi sosial pada remaja. Adanya korelasi antara intensitas penggunaan gadget dengan kualitas tidur (p=0,001) Adanya korelasi antara intensitas penggunaan gadget dengan interaksi sosial (p=0,001) Diskusi: Remaja yang menggunakan gadgetnya dengan intensitas yang tinggi akan berdampak pada kualitas tidur dan interaksi sosialnya. Oleh karena itu penyebab kualitas tidur yang buruk dan interaksi sosial yang kurang baik harus dapat diketahui sedini mungkin agar masalah tersebut dapat teratasi.", "corpus_id": 202126302, "venue": "", "year": 2019, "author_names": [ "Venni Hariani" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "210358507", "title": "Perilaku penggunaan gadget dengan kualitas tidur pada remaja", "abstract": "Electronic gadgets, psychological behavior and quality of sleep among adolescent Background: In the development stage, adolescents are faced with problems of health problems including poor sleep quality. Globally, the prevalence of sleep quality disorders in the world varies from 15.3% to 39.2% Data in Indonesia shows that most of the quality of sleep in adolescents is less than 63% Poor quality of sleep can harm health. Factors that can cause poor sleep quality include the use of gadgets, where 80% say using gadgets> 4 hours 17 minutes a day.Purpose: Known the electronic gadgets, psychological behavior and quality of sleep among adolescent.Methods: The type of research used in this study was quantitative. The design of this study used analytics. The research subjects were class X and XI students at SMKN 1 Terbanggi Besar, Central Lampung, totaling 119 people. Collect data with the Pittsburgh Sleep Quality Index (PSQI) questionnaire and Smartphone Addiction Scale (SAS) The statistical test uses the chi square test.Results: Univariate analysis was obtained by the majority of respondents who had bad behavior in using gadgets, as many as 68 people (57.1% and most respondents had poor sleep quality, as many as 77 people (64.7% Analysis data resulted p value 0,000 and OR 4,696.Conclusion: There were the electronic gadgets, psychological behavior and quality of sleep among adolescent. The advice is to increase health promotion counseling about sleep patterns and the excessive use of gadgets, and for schools to set regulations on the ban on the use of gadgets in class hours. Keywords Quality of Sleep, Gadgets, Adolescent; Psychological; BehaviorPendahuluan: Dalam tahap perkembangannya, remaja dihadapkan pada masalah masalah kesehatan diantaranya kualitas tidur yang buruk. Secara global menunjukkkan prevalensi gangguan kualitas tidur di dunia bervariasi mulai 15,3% 39,2% Data di Indonesia menunjukan sebagian besar kualitas tidur pada remaja kurang terpenuhi yaitu sebanyak 63% Buruknya kualitas tidur dapat menimbulkan dampak negatif bagi kesehatan. Faktor yang dapat menyebabkan kualitas tidur yang buruk diantaranya adalah penggunaan gadget, dimana 80% menyatakan meggunakan gadget 4 jam 17 menit dalam sehari.Tujuan: Diketahui hubungan perilaku penggunaan gadget dengan kualitas tidur pada remaja.Metode: Jenis penelitian yang digunakan dalam penelitian ini adalah kuantitatif dengan rancangan menggunakan analitik. Subyek penelitian yaitu siswa kelas X dan XI di SMKN 1 Terbanggi Besar Lampung Tengah, yang berjumlah 119 responden. Cara pengambilan data dengan kuesioner Pittsburgh Sleep Quality Indeks (PSQI) dan Smartphone Addiction Scale (SAS) Uji stastistik menggunakan uji chi square.Hasil: Sebagian besar responden memiliki perilaku penggunaan gadget yang tidak baik, yaitu sebanyak 68 orang (57,1% dan sebagian besar responden memiliki kualitas tidur yang buruk, yaitu sebanyak 77 orang (64,7% Hasil uji statistik diperoleh p value 0,000 dan OR= 4,696.Simpulan: Ada hubungan perilaku penggunaan gadget dengan kualitas tidur pada remaja. Perlu lebih ditingkatkannya promosi kesehatan konseling tentang pola tidur dan dampak penggunaan gadget secara berlebihan, serta bagi pihak sekolah dapat menetapkan peraturan tentang larangan penggunaan gadget di jam pelajaran.", "corpus_id": 210358507, "venue": "Holistik Jurnal Kesehatan", "year": 2019, "author_names": [ "Umi Romayati Keswara", "Novrita Syuhada", "Wahid Tri Wahyudi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197712746", "title": "HUBUNGAN PENGGUNAAN GADGET TERHADAP POLA TIDUR PADA ANAK SEKOLAH DI UPT SDN GADINGREJO II PASURUAN", "abstract": "Sleep pattern disturbance is time limited disruption of sleep; natural, periodic suspension of consciousness about amoun and quality. One of factors influencing the sleep pattern disturbance on school child is habitual factor such as life style of school child who thirst for technology so that they use gadget for long time particularly in using social media, chatting, games. This study aims to determine whether is there relationship between gadget utulization with sleep pattern disturbance of school child at UPT SDN 02 Gadingrejo Pasuruan. Method The research based on descriptive correlational with cross sectional method. The population of this research is class student grade V and VI SDN 02 Gadingrejo Pasuruan The sample in this research was taken with purposive sampling technique with 70 samples. The instrument of this research are questionnaire. X variable was measured by SDSC (Sleep Disturbance Schale of Children) and Y variable was measured by Gadget Utilization Addiction questionnaire. This research using analysis statistic of Spearman Rank test with a significant level a 0.05 or 95% Result The result of statistic test have gained p value 0.003, and the value r 0.357. The conclusion of this research, there is a correlation between gadget utiization with sleep pattern disturbance of school child at UPT SDN 02 Gadingrejo Pasuruan. Discussion Suggested that child school should cut down the intensity of using gadget and control the sleeping time thus students can overcome this sleep pattern disturbance problem.", "corpus_id": 197712746, "venue": "", "year": 2018, "author_names": [ "Moh Saifullah" ], "n_citations": 1, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "29520797", "title": "Impacts on air pollution and health by changing commuting from car to bicycle.", "abstract": "Our study is based on individual data on people's home and work addresses, as well as their age, sex and physical capacity, in order to establish realistic bicycle travel distances. A transport model is used to single out data on commuting preferences in the County Stockholm. Our analysis shows there is a very large potential for reducing emissions and exposure if all car drivers living within a distance corresponding to a maximum of a 30min bicycle ride to work would change to commuting by bicycle. It would result in >111,000 new cyclists, corresponding to an increase of 209% compared to the current situation. Mean population exposure would be reduced by about 7% for both NOx and black carbon (BC) in the most densely populated area of the inner city of Stockholm. Applying a relative risk for NOx of 8% decrease in all cause mortality associated with a 10mgm 3 decrease in NOx, this corresponds to >449 (95% CI: 340 558) years of life saved annually for the Stockholm county area with 2.1 million inhabitants. This is more than double the effect of the reduced mortality estimated for the introduction of congestion charge in Stockholm in 2006. Using NO2 or BC as indicator of health impacts, we obtain 395 (95% CI: 172 617) and 185 (95% CI: 158 209) years of life saved for the population, respectively. The calculated exposure of BC and its corresponding impacts on mortality are likely underestimated. With this in mind the estimates using NOx, NO2 and BC show quite similar health impacts considering the 95% confidence intervals.", "corpus_id": 29520797, "venue": "The Science of the total environment", "year": 2017, "author_names": [ "Christer Johansson", "Boel Lovenheim", "Peter Schantz", "Lina Wahlgren", "Peter Almstrom", "Anders Markstedt", "Magnus Stromgren", "Bertil Forsberg", "Johan Nilsson Sommar" ], "n_citations": 91, "n_key_citations": 6, "score": 1 }, { "doc_id": "53556513", "title": "Motives, perceptions and experiences of electric bicycle owners and implications for health, wellbeing and mobility", "abstract": "Abstract The sale of electrically assisted bicycles 'e bikes' is growing at a rapid rate across Europe. Whereas market data is available describing sales trends, there is limited understanding of the experience of early adopters of e bike technology. This paper investigates the motives for e bike purchase, rider experience and perceived impact on mobility, health and wellbeing through in depth interviews with e bike owners in the Netherlands and the UK. Findings revealed that the motive for purchasing e bikes was often to allow maintenance of cycling against a backdrop of changing individual or household circumstances. E bikes also provided new opportunities for people who would not otherwise consider conventional cycling. Perceptions of travel behaviour change revealed that e biking was replacing conventional cycling but was also replacing journeys that would have been made by car. There was also a perception that e biking has increased, or at least allowed participants to maintain, some form of physical activity and had benefitted personal wellbeing. Technological, social and environmental barriers to e biking were identified. These included weight of bicycle, battery life, purchase price, social stigma and limitations of cycle infrastructure provision. Additional research is necessary to quantify actual levels of mode substitution and new journey generation among new e bike owners and the impact of e biking on promoting physical health and mental wellbeing.", "corpus_id": 53556513, "venue": "", "year": 2016, "author_names": [ "Tim Jones", "Lucas Harms", "Ethan Heinen" ], "n_citations": 108, "n_key_citations": 5, "score": 1 }, { "doc_id": "20967230", "title": "Risky riding: Naturalistic methods comparing safety behavior from conventional bicycle riders and electric bike riders.", "abstract": "As electric bicycles (e bikes) have emerged as a new transportation mode, their role in transportation systems and their impact on users have become important issues for policy makers and engineers. Little safety related research has been conducted in North America or Europe because of their relatively small numbers. This work describes the results of a naturalistic GPS based safety study between regular bicycle (i.e. standard bicycle) and e bike riders in the context of a unique bikesharing system that allows comparisons between instrumented bike technologies. We focus on rider safety behavior under four situations: (1) riding in the correct direction on directional roadway segments, (2) speed on on road and shared use paths, (3) stopping behavior at stop controlled intersections, and (4) stopping behavior at signalized intersections. We find that, with few exceptions, riders of e bike behave very similarly to riders of bicycles. Violation rates were very high for both vehicles. Riders of regular bicycles and e bikes both ride wrong way on 45% and 44% of segments, respectively. We find that average on road speeds of e bike riders (13.3kph) were higher than regular bicyclists (10.4kph) but shared use path (greenway) speeds of e bike riders (11.0kph) were lower than regular bicyclists (12.6kph) both significantly different at >95% confidence. At stop control intersections, both bicycle and e bike riders violate the stop signs at the similar rate with bicycles violating stop signs at a slightly higher rate at low speed thresholds ~80% violations at 6kph, 40% violations at 11kph) Bicycles and e bikes violate traffic signals at similar rates (70% violation rate) These findings suggest that, among the same population of users, e bike riders exhibit nearly identical safety behavior as regular bike riders and should be regulated in similar ways. Users of both technologies have very high violation rates of traffic control devices and interventions should occur to improve compliance.", "corpus_id": 20967230, "venue": "Accident; analysis and prevention", "year": 2015, "author_names": [ "Brian Casey Langford", "Jiaoli Chen", "Christopher R Cherry" ], "n_citations": 97, "n_key_citations": 6, "score": 0 }, { "doc_id": "110562661", "title": "Associations between the objective and perceived built environment and bicycling for transportation", "abstract": "Abstract This paper investigates the relative associations between the objectively measured built environment versus stated perceptions of the built environment and bicycling. Data are from a random phone survey conducted in the Portland, Oregon, region. Binary logit and linear regression models, using objective measures, perceived measures, and both sets of measures, were estimated to predict propensity of bicycling and frequency of bicycling separately. Results showed that the perceived environment and objective environment had different associations with bicycling. This suggests that future research should include both measures when possible and that a supportive objective environment is necessary for bicycling. Intervention programs to improve people's perceptions of the environment may be also necessary to reap the full potential of planning and design policies. The results also suggest that it is useful to predict bicycling propensity and bicycling frequency separately, as the predictors of each behavior do vary. For the objective measures, bicycle paths and lanes and minor streets were associated with higher propensity of bicycling for transportation, while paths and nearby retail destinations were associated with higher bicycling frequency. Perceptions of the environment did not predict the propensity to bicycle, after controlling for attitudes towards daily travel, but did predict bicycling frequency. Finally, the analysis confirms the importance of attitudes in predicting behavior.", "corpus_id": 110562661, "venue": "", "year": 2015, "author_names": [ "Liang Ma", "Jennifer Dill" ], "n_citations": 89, "n_key_citations": 3, "score": 0 }, { "doc_id": "9794290", "title": "Potential risk and its influencing factors for separated bicycle paths.", "abstract": "In this paper, we propose two potential risk indicators to define and evaluate the safety of bicycle path at the microscopic level. Field bicycle data were collected from three survey sites under different traffic conditions. These two risk indicators based on speed dispersion were proposed and calculated during each 5 min interval. The risk influences of various widths of bicycle path and traffic conditions were analyzed by using one way ANOVA. We further proposed a generalized linear model (GLM) for modeling and analyzing the relationships between bicycle risks and v/c ratio and percentages of electric bicycles, male cyclists, young cyclists, and loaded cyclists. The stepwise regression models were applied for determination of coefficients. The results show that the influences of gender and age of cyclists on potential risks are not significant. The risks increase with the width of bicycle path and percentage of electric bicycles, while only for wider bicycle path (4 lane case in this study) the risks are associated with whether or not cyclists are loaded. The findings could contribute for analysis and evaluation of the safety for bicycle path.", "corpus_id": 9794290, "venue": "Accident; analysis and prevention", "year": 2016, "author_names": [ "Chao Xu", "Ying Yang", "Sheng Jin", "Zhaowei Qu", "Lei Hou" ], "n_citations": 35, "n_key_citations": 1, "score": 1 }, { "doc_id": "5760346", "title": "Human in the Loop Bicycle Control via Active Heart Rate Regulation", "abstract": "This paper addresses the design of a heart rate (HR) control system for a bicycle equipped with a continuously varying transmission. The control system helps the cyclist maintain a constant physical effort throughout the trip. A complete model of the entire system (bicycle, cyclist, and HR dynamics) is derived, identified, and validated using experimental data. The model is the basis for the development of two controllers. A proportional integral controller and a second order sliding mode (SOSM) controller. The two controllers are analyzed, concluding that the SOSM controller offers better robustness against unmodeled dynamics and disturbances. The SOSM controller is finally exhaustively tested on two subjects in real world conditions. With the proposed systems, the riders are capable of keeping their HR within 10 bpm from the desired one.", "corpus_id": 5760346, "venue": "IEEE Transactions on Control Systems Technology", "year": 2015, "author_names": [ "Matteo Corno", "Paolo Giani", "Mara Tanelli", "Sergio M Savaresi" ], "n_citations": 43, "n_key_citations": 3, "score": 0 }, { "doc_id": "156042526", "title": "Characterisation of and reflections on the synergy of bicycles and public transport", "abstract": "The bicycle is often understood as a disjointed 'feeder' mode that provides access to public transport. We argue that combined use of the bicycle and public transport should be understood in a broader perspective, especially where bicycles link to higher speed and higher capacity public transport, such as the train. Cycling and public transport can have a symbiotic relationship forming a hybrid, distinct transport mode, which should be reflected in transport planning. The bicycle is as a way to soften the rigid nature of public transport and thus accommodate diverse individual travel needs and situations. Public transport can be seen as a means to dramatically extend cycling's speed and spatial reach. We combine a system perspective with conceptual analysis to explore how, why and when this reconsideration is important. We use the Netherlands as illustrative case because of the relative maturity of its bicycle train connections. The case shows that the synergy between rather opposite yet highly complementary aspects, high speed of the train, high accessibility of the bicycle and flexibility in combining both sub modes, are the fundamental characteristics to understand the functioning of this system in a wider spatial context. In our conclusion we propose a research agenda, to further explore the relevance of this system for land use and transport planning and distil wider implications for the international debate.", "corpus_id": 156042526, "venue": "", "year": 2016, "author_names": [ "Roland Kager", "Luca Bertolini", "Marco te Brommelstroet" ], "n_citations": 69, "n_key_citations": 3, "score": 1 }, { "doc_id": "3970591", "title": "The Effect of Sharrows, Painted Bicycle Lanes and Physically Protected Paths on the Severity of Bicycle Injuries Caused by Motor Vehicles", "abstract": "We conducted individual and ecologic analyses of prospectively collected data from 839 injured bicyclists who collided with motorized vehicles and presented to Bellevue Hospital, an urban Level 1 trauma center in New York City, from December 2008 to August 2014. Variables included demographics, scene information, rider behaviors, bicycle route availability, and whether the collision occurred before the road segment was converted to a bicycle route. We used negative binomial modeling to assess the risk of injury occurrence following bicycle path or lane implementation. We dichotomized U.S. National Trauma Data Bank Injury Severity Scores (ISS) into none/mild (0 8) versus moderate, severe, or critical >8) and used adjusted multivariable logistic regression to model the association of ISS with collision proximity to sharrows (i.e. bicycle lanes designated for sharing with cars) painted bicycle lanes, or physically protected paths. Negative binomial modeling of monthly counts, while adjusting for pedestrian activity, revealed that physically protected paths were associated with 23% fewer injuries. Painted bicycle lanes reduced injury risk by nearly 90% (IDR 0.09, 95% CI 0.02 0.33) Holding all else equal, compared to no bicycle route, a bicycle injury nearby sharrows was nearly twice as likely to be moderate, severe, or critical (adjusted odds ratio 1.94; 95% confidence interval (CI) 0.91 4.15) Painted bicycle lanes and physically protected paths were 1.52 (95% CI 0.85 2.71) and 1.66 (95% CI 0.85 3.22) times as likely to be associated with more than mild injury respectively.", "corpus_id": 3970591, "venue": "Safety", "year": 2016, "author_names": [ "Stephen P Wall", "David C Lee", "Spiros Frangos", "Monica Sethi", "Jessica H Heyer", "Patricia Ayoung-Chee", "Charles J DiMaggio" ], "n_citations": 16, "n_key_citations": 1, "score": 1 }, { "doc_id": "55524256", "title": "Built environment determinants of bicycle volume: A longitudinal analysis", "abstract": "This study examines determinants of bicycle volume in the built environment with a five year bicycle count dataset from Seattle, Washington. A generalized linear mixed model (GLMM) is used to capture the bicycle volume change over time while controlling for temporal autocorrelations. The GLMM assumes that bicycle count follows a Poisson distribution. The model results show that (1) the variables of non winter seasons, peak hours, and weekends are positively associated with the increase of bicycle counts over time; (2) bicycle counts are fewer in steep areas; (3) bicycle counts are greater in zones with more mixed land use, a higher percentage of water bodies, or a greater percentage of workplaces; (4) the increment of bicycle infrastructure is positively associated with the increase of bicycle volume; and (5) bicycling is more popular in neighborhoods with a greater percentage of whites and younger adults. It concludes that areas with a smaller slope variation, a higher employment density, and a shorter distance to water bodies encourage bicycling. This conclusion suggests that to best boost bicycling, decision makers should consider building more bicycle facilities in flat areas and integrating the facilities with employment densification and open space creation and planning.", "corpus_id": 55524256, "venue": "", "year": 2017, "author_names": [ "Peng Chen", "Jiangping Zhou", "Feiyang Sun" ], "n_citations": 25, "n_key_citations": 0, "score": 1 }, { "doc_id": "18078282", "title": "Mobile Cockpit System for Enhanced Electric Bicycle Use", "abstract": "This paper presents the project of a mobile cockpit system (MCS) for smartphones, which provides assistance to electric bicycle (EB) cyclists in smart cities' environment. The presented system introduces a mobile application (MCS App) with the goal to provide useful personalized information to the cyclist related to the EB's use, including EB range prediction considering the intended path, management of the cycling effort performed by the cyclist, handling of the battery charging process, and the provisioning of information regarding available public transport. This work also introduces the EB cyclist profile concept, which is based on historical data analysis previously stored in a database and collected from mobile devices' sensors. From the tests performed, the results show the importance of route guidance, taking into account the energy savings. The results also show significant changes on range prediction based on user and route taken. It is important to say that the proposed system can be used for all bicycles in general.", "corpus_id": 18078282, "venue": "IEEE Transactions on Industrial Informatics", "year": 2015, "author_names": [ "Joao C Ferreira", "Vitor Monteiro", "Jose A Afonso", "Joao Luiz Afonso" ], "n_citations": 14, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "139809399", "title": "Ring beam reinforcing steel bar connection structure and steel pipe column ring beam joint construction method", "abstract": "The invention discloses a ring beam reinforcing steel bar connection structure and a steel pipe column ring beam joint construction method. The ring beam reinforcing steel bar connection structure comprises a steel pipe column, a ring beam steel reinforcement cage arranged on the steel pipe column in a sleeving mode, and a plurality of floor beams which are arranged in the ring beam steel reinforcement cage in a penetrating mode and stretch out of the ring beam steel reinforcement cage. Two annular reinforcing plates which are vertically arranged are designed at a steel pipe column joint. A plurality of vertical reinforcing ribs fixedly connected with the annular reinforcing plates are arranged between the annular reinforcing plates at intervals. Beam column reinforcing steel bars include the ring beam upper longitudinal ribs, the ring beam lower longitudinal ribs, the waist ribs and the rectangular stirrups, wherein the ring beam upper longitudinal ribs, the ring beam lower longitudinal ribs and the rectangular stirrups are bound together, and the ring beam upper longitudinal ribs and the ring beam lower longitudinal ribs are evenly distributed and arranged in a one to one corresponding mode. During construction, the floor beams, the annular reinforcing plates and the portion, below the annular reinforcing plates, of the steel reinforcement cage are manufactured, and then the portion, above the annular reinforcing plates, of the steel reinforcement cage is manufactured. The ring beam reinforcing steel bar connection structure and the steel pipe column ring beam joint construction method have the advantages of being convenient to construct and high in quality.", "corpus_id": 139809399, "venue": "", "year": 2015, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "139163333", "title": "Rectangular steel pipe column", "abstract": "The invention discloses a rectangular steel pipe column. The rectangular steel pipe column comprises a box type short column, a first steel pipe column and a second steel pipe column, wherein the cross sections of the box type short column, the first steel pipe column and the second steel pipe column are rectangular and are same in size, the box type short column comprises an inner partition plate and a plurality of outer steel plates; the inner partition plate is fixed on the inner wall of the box type short column through carbon dioxide gas shielded welding; two ends of the box type short column are respectively fixed on the first steel pipe column and the second steel pipe column in a welding manner. According to the technical scheme, a small section of box type short column with the cross section size as same as that of the rectangular steel pipe column can be manufactured in a factory; the inner partition plate is welded in the box type short column by using a carbon dioxide gas shielded welding manner; after the box type short column is manufactured, the box type short column is directly integrally welded together with the steel pipe columns at two ends so as to form a section of integral rectangular steel pipe column. By virtue of the technical scheme, the electric slag welding process is omitted, the wall thickness of a node domain column can meet the design requirement, the anti seismic property of the node is improved, the labor intensity of workers is alleviated, and the processing efficiency and the welding quality are improved.", "corpus_id": 139163333, "venue": "", "year": 2014, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "146777251", "title": "Installation and construction method of column base of large diameter steel pipe column", "abstract": "The invention discloses an installation and construction method of a column base of a large diameter steel pipe column. The method comprises the following steps: a, pouring a foundation pit cushion layer into a foundation pit; b, binding a bottom steel net and a lateral wall steel net above the foundation pit cushion layer; c, installing four anchor bolts. The installation and construction method is characterized in that the anchor bolts are M36 anchor bolts; the anchor bolts are positioned by adopting embedded positioning ring plates during installation, and the positioning ring plates are positioned and installed by adopting upright tube bracket supports with the steel pipe structure before being embedded. The installation and construction method has the advantages of being more convenient to operate, more accurate and faster to install, and higher in construction quality, and is especially suitable for installation and construction of the column base of the large diameter steel pipe column, and the construction quality of the column base is ensured, so as to ensure the quality of the steel pipe column.", "corpus_id": 146777251, "venue": "", "year": 2014, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "116404142", "title": "Steel casting modularization panel point for connection of steel pipe column and H shaped beam", "abstract": "Disclosed is a steel casting modularization panel point for connection of a steel pipe column and an H shaped beam. The panel point comprises a hollow connecting column, at least one set of connecting beam structures, an upper set of inner separating plates and a lower set of inner separating plates, wherein the connecting beam structures are arranged on the outer wall of the connecting column, the upper set of inner separating plates and the lower set of inner separating plates are arranged in the connecting column, the upper set and the lower set of inner separating plates are annular inner separating plates, each connecting beam structure is of an H shaped structure, and the upper set of inner separating plates and the lower set of inner separating plates are parallel and level to the upper flanges and the lower flanges of the H shaped connecting beam structures respectively. The modularization panel point can be connected with a beam section and a column section directly by welding, construction procedures are reduced, and the panel point is good in ductility, high in rigidity, stable in energy consumption performance and efficient. Compared with a traditional panel point, the modularization panel point is better in anti seismic property.", "corpus_id": 116404142, "venue": "", "year": 2013, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "146214138", "title": "Improved installation fixing device of top down steel pipe column", "abstract": "The utility model discloses an improved installation fixing device of a top down steel pipe column. The improved installation fixing device comprises the top down steel pipe column and a steel supporting frame, a connecting beam is arranged at the top of the steel supporting frame, the inner end of the connecting beam is connected with the upper end of a guiding column through lug plates, the lower end of the guiding column is connected with the upper end of the top down steel pipe column through lug plates, and the top down steel pipe column is transversely and longitudinally adjusted through transverse jacks and longitudinal jacks. According to the improved installation fixing device, the steel pipe column can be directly inserted into a rotary excavated pile foundation, construction of the top down steel pipe column can be carried out while the pile foundation is constructed, a steel pipe column positioning device can be eliminated, the pile foundation and the steel pipe column are continuously constructed, the construction period is saved, the project manufacturing cost is saved, and the use requirement of a building safe structure and the use requirement of the building design function are met at the same time.", "corpus_id": 146214138, "venue": "", "year": 2013, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "116315964", "title": "Slope surface pipe column frame bent base", "abstract": "The utility model provides a slope surface pipe column frame bent base. The slope surface pipe column frame bent base comprises connecting frames and supporting bases, wherein the plurality of supporting bases are fixed on the two parallel connecting frames; connecting plates are fixed at two ends of the connecting frames; and a plurality of connecting frame holes are formed in the connecting frames. The supporting bases comprise upper surfaces, which are parallel to a horizontal plane, and supporting frames, which are vertical to the horizontal plane; the upper surfaces are fixedly connected with the supporting frames; and bolt holes are formed in the upper surfaces. After the slope surface pipe column frame bent base device provided by the utility model is connected with pipe columns by bolts, the a plurality of pipe columns are integrally connected, so that the integrity and stability of the pipe column frame bent are enhanced, contribution is made to saving construction materials, engineering cost is saved and construction progress is accelerated. The slope surface pipe column frame bent base device provided by the utility model is simple, fast and convenient to mount and demount and can be used in a repetitive way.", "corpus_id": 116315964, "venue": "", "year": 2012, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "134939134", "title": "Quick positioning construction device and construction method for steel pipe column of bridge", "abstract": "The utility model discloses a quick positioning construction device for steel pipe columns of bridges. The quick positioning construction device for steel pipe columns of bridges comprises hook shaped anchor bolts, screw threads are formed on the top of the anchor bolts, and screw nuts are arranged on the screw threads. The utility model also discloses a quick positioning construction method for steel pipe columns of bridges. The quick positioning construction method for steel pipe columns of bridges includes the following steps: embedding the anchor bolts before pouring concrete over the steel pipe pile foundation; making the bottom surface of the steel pipe pile foundation level by using mortar to install a prefabricated strip foundation, the strip foundation and the anchor bolt are on the same axis; leveling the level adjustment screw nuts on the anchor bolts by levels; hoisting and arranging the steel pipe columns of welded flange plates in place, and the welded flange plates are fixed with the anchor bolts through height adjustment screw nuts; the seam at the bottom of the flange plates are filled by mortar of the railway bridge bearings. The quick positioning construction device for steel pipe columns of bridges uses the anchor bolts to position, screw nuts to adjust the perpendicularity of the steel pipe columns and temporary anchorage.", "corpus_id": 134939134, "venue": "", "year": 2012, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "115328870", "title": "Connected node of end plate type H shaped steel beam and rectangular pipe column split bolt", "abstract": "The invention relates to a connected node of an end plate type H shaped steel beam and a rectangular pipe column split bolt. The connected node of the end plate type H shaped steel beam and the rectangular pipe column split bolt comprises a rectangular pipe column, a plurality of H shaped steel beams, end plates which are connected with the end portions of the H shaped steel beams and bolts, wherein the rectangular pipe column comprises a first pipe wall, a second pipe wall, a third pipe wall and a fourth pipe wall, each H shaped steel beam comprises a first H shaped steel beam, a second H shaped steel beam, a third H shaped steel beam and a fourth H shaped steel beam, each end plate comprises a first end plate, a second end plate, a third end plate and a fourth end plate, the first end plate is connected with the end portion of the first H shaped steel beam, the second end plate is connected with the end portion of the second H shaped steel beam, the third end plate is connected with the end portion of the third H shaped steel beam, the fourth end plate is connected with the end portion of the fourth H shaped steel beam, each bolt comprises a first bolt and a second bolt, the first bolt penetrates through the first end plate, the first pipe wall, the third pipe wall and the third end plate, and the second bolt penetrates through the second end plate, the second pipe wall, the fourth pipe wall and the fourth end plate. The connected node of the end plate type H shaped steel beam and the rectangular pipe column split bolt has the advantages of being capable of saving raw materials, free from need of field welding in connection, simple and convenient to construct and capable of better meeting characteristics of a preset assembling type steel structure of housing construction.", "corpus_id": 115328870, "venue": "", "year": 2011, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "115497335", "title": "Assembled steel pipe inner sleeve T shaped piece beam and column connection device", "abstract": "The utility model belongs to the technical field of construction engineering equipment and relates to an assembled steel pipe inner sleeve T shaped piece beam and column connection device. According to the device, an upper steel pipe column and a lower steel pipe column respectively sleeve a steel pipe inner sleeve and are welded, so as to form a surrounding weld seam; T shaped piece flanges of the lower end of the steel pipe inner sleeve are fixedly mounted on the lower steel pipe column vertically through high strength bolts; T shaped piece flanges are fixedly mounted on the upper steel pipe column vertically through high strength run through bolts; a T shaped piece web plate is horizontally connected to the middle of each T shaped piece flange, and each corresponding T shaped piece flange and each corresponding T shaped piece web plate are combined to form a T shaped piece; the T shaped piece web plates of the lower end of the steel pipe inner sleeve are fixedly mounted on a lower flange of a steel beam horizontally through high strength bolts; the T shaped piece web plates of the upper end of the steel pipe inner sleeve are fixedly mounted on an upper flange of the steel beam horizontally through high strength bolts. The device has the advantages that the structure is simple, the construction speed is high, the mounting is convenient, the manufacturing cost is low, the device is simple and attractive, and the designing and mounting of adjacent members are not affected.", "corpus_id": 115497335, "venue": "", "year": 2014, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "136318626", "title": "Tension Loads on Pipe Column End Plates", "abstract": "", "corpus_id": 136318626, "venue": "", "year": 1987, "author_names": [ "James Tidwell", "Duane S Ellifritt" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "222125436", "title": "Le gouvernement du Canada doit continuer a jouer de prudence dans le dossier de l'aide medicale a mourir", "abstract": "La legalisation de l'aide medicale a mourir en juin 2016 est le changement clinique le plus profond que j'ai connu dans ma carriere de medecin. Rien n'est plus marquant et emotif qu'un deces; or, en l'espace d'une journee, des Canadiens ont litteralement obtenu la possibilite", "corpus_id": 222125436, "venue": "Canadian Medical Association Journal", "year": 2020, "author_names": [ "Andreas Laupacis" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "148042774", "title": "Raccrochage scolaire que peut la pedagogie [Dossier]", "abstract": "Le document se compose de reflexions, de temoignages et d'actions visant a lutter contre le decrochage scolaire ses situations d'echec, de frustration, de demotivation, de degout d'apprendre. Grace au soutien pedagogique, a l'accompagnement, a la bienveillance, a l'installation d'un climat scolaire accueillant, securisant, serein, l'enseignant en coherence avec l'equipe educative, a la possibilite d'influencer positivement l'engagement et la reussite scolaire des eleves. Dossier.", "corpus_id": 148042774, "venue": "", "year": 2016, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "81142549", "title": "Interet et utilisabilite du dossier pharmaceutique en pratique medicale. Enquete aupres de medecins et pharmaciens hospitaliers (etude MATRIX)", "abstract": "Abstract Background To evaluate the impact of the pharmaceutical patient record use in emergency, geriatric and anaesthesia and intensive care departments, an experimentation was launched in 2013 in 55 hospitals. The purpose of the study was to assess the opinions of physicians and pharmacists about the benefits and usability of the patient pharmaceutical record. Methods An e mailed self administered questionnaire was sent to all the pharmacists, anaesthesiologists, geriatricians and emergency physicians of the 55 hospitals involved in the patient pharmaceutical record experimentation. The questionnaire assessed the usability of the patient pharmaceutical record using the \"System Usability Scale\" as well as its use, its benefits and limitations perceived in clinical practice, and overall user satisfaction. Questionnaires were collected from November 2014 to January 2015. Results Ninety six questionnaires were collected, from 47 hospitals, representing 86% of the hospitals involved in the experimentation. The patient pharmaceutical record was effectively operational in 36 hospitals. Data from 73 questionnaires filled by physicians and pharmacists with potential experience with the patient pharmaceutical record were used for evaluation. Forty two respondents were pharmacists (57% and 31 were physicians (43% including 13 geriatricians, 11 emergency physicians and 7 anaesthesiologists. Patient pharmaceutical record overall usability score was 62.5 out of 100. It did not vary with the profession or seniority of the respondent. It was positively correlated with the frequency of use. More than half of respondents reported that they never or uncommonly used the patient pharmaceutical record. The length of access to data period was considered as insufficient. Main obstacles to more utilization of the patient pharmaceutical record were the lack of information about the dosage of dispensed drugs, the low number of patients in possession of their health card and the low number of patients with an activated patient pharmaceutical record. Conclusion Two years after the beginning of the experiment aiming to broaden the access to the patient pharmaceutical record to physicians, these first evaluation results are encouraging. The evaluation of the consequences of the access to the patient pharmaceutical record for physicians remains necessary.", "corpus_id": 81142549, "venue": "", "year": 2016, "author_names": [ "Matthieu Schuers", "Marc Olivier Timsit", "Andre Gillibert", "A Fred", "Nicolas Griffon", "Jacques Benichou", "Stefan Jacques Darmoni", "Pascal Staccini" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "187041673", "title": "Vers une evaluation scolaire inclusive Presentation du dossier", "abstract": "Dix ans apres le vote de la loi francaise du 11 fevrier 2005 pour l'egalite des droits et des chances, la participation et la citoyennete des personnes handicapees l'UMR Education formation travail savoirs (EFTS) de l'universite Jean Jaures de Toulouse et de l'Ecole nationale de formation agronomique (ENFA) a organise, en fevrier 2015, un colloque consacre aux questions particulieres que soulevent les pratiques d'evaluation des eleves dans le cadre de l'ecole inclusive, sous le titre Education inclusive, la question de l'evaluation des representations aux pratiques evaluatives Cette manifestation a reuni des chercheurs dans le domaine de l'education inclusive, de l'evaluation et du handicap, mais egalement des professionnels de terrain (enseignants, formateurs, educateurs specialises, medecins, maitre de stage, directeurs d'etablissement) qui ont mis en oeuvre des dispositifs d'evaluation adaptes pour des publics en situation de handicap.", "corpus_id": 187041673, "venue": "", "year": 2016, "author_names": [ "Laetitia Branciard", "Christine Mias", "Herve Benoit" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "147553885", "title": "Apprendre et vivre a l'ecole une question de climat scolaire [Dossier]", "abstract": "Le climat scolaire, theme central de ce numero, est une notion recente qui s'impose peu a peu dans les milieux de l'education et qui s'inscrit dans les differents textes de loi, decrets et circulaires Les contributions qui s'y referent soulignent les capacites qu'elle recele tout en mettant en avant une forme de plasticite innovante qui vaut pour l'ensemble des domaines educatifs et pedagogiques qui structurent la vie d'un etablissement scolaire eleves, enseignants, parents, acteurs associatifs, educateurs, travailleurs sociaux. Ainsi il devient primordial d'accorder une nouvelle place importante aux questions de qualite des apprentissages, de qualite relationnelle, d'apprentissage de la citoyennete, de reussite scolaire et de prevention des violences. Dossier.", "corpus_id": 147553885, "venue": "", "year": 2015, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "227778324", "title": "Services (Les) dans le bon rythme. scolaire [Dossier]", "abstract": "Le dossier fait un bilan des changements structurels intervenus au sein des collectivites territoriales avec la reforme des rythmes scolaires. Si depuis la rentree scolaire de septembre 2013, le vote de la loi s'est traduit, comme les collectivites ont pu le prevoir, par le recrutement d'animateurs, la revue constate cependant, qu'au dela du simple deploiement de nouveaux personnels, la plupart d'entre elles ont engage une veritable restructuration de leurs services jeunesse, modifiant les horaires des agents, mettant en place un plan de formation, actualisant les fiches de poste et faisant basculer l'organisation du travail en mode projet avec une priorite a la transversalite de suivi des actions entre services. Pour certaines equipes des services jeunesse, la reforme a initie a la mise en place d'une politique educative locale ambitieuse. Dossier.", "corpus_id": 227778324, "venue": "", "year": 2015, "author_names": [ "Stephanie Marseille" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "193101407", "title": "Dossier :L'organisation du travail scolaire et recherche d'efficacite", "abstract": "Dans cette partie de la revue, nous presentons quatre textes issus d'un symposium du Reseau Education Formation (REF) sur la thematique de l'organisation du travail scolaire et recherche d'efficacite organise a l'Universite de Geneve le 9 au 11 septembre 2013, sous la coordination d'Andreea Capitanescu Benetti (Universite de Geneve, Faculte de psychologie et des sciences de l'education)", "corpus_id": 193101407, "venue": "", "year": 2015, "author_names": [ "Andreea Capitanescu Benetti" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "196352957", "title": "Pratique medicale dans la prise en charge de l'hypertension arterielle comme facteur de risque renal en pratique medicale generale, et en prevention primaire, chez l'enfant en milieu scolaire et la femme enceinte dans la region d'Annaba (Algerie)", "abstract": "Resume But de l'etude Etudier la pratique medicale dans la prise en charge de l'hypertension arterielle comme facteur de risque renal en pratique medicale generale, et en prevention primaire, chez l'enfant en milieu scolaire et la femme enceinte dans le cadre du suivi prenatal. Patients et methode L'etude longitudinale, observationnelle sur une annee, a porte sur la pratique medicale en milieu scolaire, en sante maternelle et en pratique medicale courante chez 100 medecins (generalistes et specialistes) a Annaba (Algerie) Resultats Chez l'enfant en milieu scolaire, la mesure de la pression arterielle n'est jamais effectuee au motif que ce geste est juge inutile par les medecins des unites de sante scolaire dans 100 des cas. Chez la femme enceinte, la mesure de la pression arterielle n'est effectuee que chez 74 des gestantes et 26 n'en beneficient pas. Dans ce dernier groupe, la mesure de la pression arterielle est jugee inutile par la sage femme dans 89 des cas. Dans 11 des cas, c'est par defaut de materiels que la sage femme ne mesure pas la pression arterielle. En pratique medicale courante, 69 des medecins prennent systematiquement la pression arterielle. Pour le reste, represente principalement par les specialistes, c'est l'etat du patient qui ne le justifie pas. Pour 62 des medecins, il y a hypertension arterielle au dela de 140/90 mmHg et pour 15 il y'a hypertension arterielle au dela de 145/95 mmHg. Parmi les medecins, 58,7 n'utilisent pas du tout la bandelette urinaire, soit parce qu'ils estiment que cet examen doit se faire dans un laboratoire (64,8 soit parce que les bandelettes urinaires ne sont pas disponibles au cabinet de consultation (35,2 Conclusion Les insuffisances dans la prise en charge de l'hypertension arterielle sont reelles. Leurs effets sur la progression de la prevalence de l'insuffisance renale chronique terminale traitee ne sont peut etre pas negligeables.", "corpus_id": 196352957, "venue": "", "year": 2014, "author_names": [ "Rafaella Rayane" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "162570817", "title": "A propos du decrochage scolaire [Dossier]", "abstract": "La premiere partie du dossier se dote des differentes representations qui circulent sur le phenomene du decrochage scolaire pour les inscrire dans les differentes approches qui en rendent compte. Il cherche ensuite a depasser ces recits du decrochage pour proposer une prevention du phenomene. Plus en aval du parcours des jeunes, les auteurs s'interessent en particulier aux structures de raccrochage dont ils mesurent la pertinence et les limites. Un article precise l'etape pour le jeune du retour en classe. La fin du document prend de la hauteur vis a vis du phenomene et s'attache a decrire les partenariat ecole/association visant a aider les jeunes en difficulte. Plus largement, le dernier article etudie rapidement les modeles theoriques des differents dispositifs de lutte contre le decrochage. Dossier.", "corpus_id": 162570817, "venue": "", "year": 2014, "author_names": [ "Anne Sirota Andre Sabatini" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "178739609", "title": "Introduction au dossier La part scolaire", "abstract": "La jeunesse contemporaine est le produit de l'ecole le developpement de la scolarisation, primaire au xixe siecle puis secondaire au xxe siecle, a contribue a faire de l'eleve la figure normale de l'enfance puis de l'adolescence, au point de rendre parfois difficile a concevoir qu'il puisse exister des enfants echappant a l'emprise scolaire. Sous cet aspect, la jeunesse irreguliere merite donc particulierement son nom elle est etrangere a ce qui d.", "corpus_id": 178739609, "venue": "", "year": 2014, "author_names": [ "Laurent Besse" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "237518241", "title": "FinTech payments in the era of COVID 19: Factors influencing behavioral intentions of \"Generation X\" in Hungary to use mobile payment", "abstract": "Organizations, such as the World Health Organization, encouraged consumers to use contactless payment methods instead of payment methods such as cash, which can be carriers of the SARS 2 virus. This study aims to evaluate factors that influence Hungarian Generation X's behavioral intentions to use mobile payment services during the pandemic. We conducted an electronic questionnaire based survey among 1120 Generation X individuals. Using structural equation modeling to analyze the study's conceptual model, our results confirm that perceived COVID 19 risk, perceived usefulness, and subjective norms significantly influence Hungarian Generation X's behavioral intentions to use mobile payment services. Moreover, perceived usefulness mediates the relationship between perceived ease of use and behavioral intention to use mobile payment systems. Overall, our results show that the model of perceived COVID 19 risk, perceived usefulness, subjective norms, and perceived ease of use explains 62.9% of the variance in intention to use mobile payment systems. Our study contributes to the technology acceptance model and highlights its effectiveness in explaining the behavioral intention to adopt mobile payments during the COVID 19 pandemic.", "corpus_id": 237518241, "venue": "Journal of Behavioral and Experimental Finance", "year": 2021, "author_names": [ "Ahmad Daragmeh", "Csaba Lentner", "Judit Sagi" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "235212928", "title": "COVID 19 knowledge, risk perception, and information sources among Chinese population", "abstract": "BACKGROUND Measures for effective control of the coronavirus disease 2019 (COVID 19) pandemic include identifying the causal organisms, applying appropriate therapies, and developing vaccines, as well as improving understanding among the general public. AIM To evaluate the knowledge, awareness, perception, and response of the general public to COVID 19 in China. METHODS A detailed questionnaire comprising 47 questions designed in both English and Chinese was developed. The survey was conducted via WeChat, a multipurpose messaging, social media, and mobile payment app that is widely used by the Chinese population. In total, 1006 participants responded, and most of them were from different provinces of mainland China. RESULTS Overall, this comprehensive survey revealed that the general public in China is highly aware of the basic information concerning COVID 19 and its precautions. Interestingly, more respondents (99.3% were aware of the term severe acute respiratory syndrome (SARS) than COVID 19 (97.2% and Middle East respiratory syndrome (MERS) (73.4% Among them, 2.4% 1.6% and 0.9% said that they or their family members or friends were affected by COVID 19, SARS, and MERS, respectively. The majority of the respondents (91.2% indicated that knowledge about COVID 19 was received mainly from WeChat, followed by TV (89% friends (76.1% and QQ (a Chinese instant messaging software service) (57.7% CONCLUSION The general public in China is highly aware of COVID 19 and the necessary precautions. Unexpectedly, 2.8% of the participants were unaware of the current epidemic. The remaining information gaps highlight the necessity of further enhancing awareness and preparedness.", "corpus_id": 235212928, "venue": "World journal of psychiatry", "year": 2021, "author_names": [ "Zhongren Ma", "Sakinah Idris", "Qiu-Wei Pan", "Zulqarnain Baloch" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "236802256", "title": "COVID 19 and Digital Financial Inclusion in Africa", "abstract": "The COVID 19 pandemic and resulting containment measures are likely to cause an economic contraction of about 2.8 percent in Sub Saharan Africa (SSA) in 2020 according to the Global Economic Prospects. Among the many adverse effects in the global economy, the crisis is posing a deep threat to financial inclusion1 efforts globally. Lockdowns and curfews designed to curb the spread of the virus resulted in the closure of bank branches and halted operations of mobile money agents in compliance with restrictions. Government officials and health practitioners encouraged use of cashless and contactless modes of payment to reduce the risk of virus spread through handling of cash, thus creating new opportunities for potential adoption of Digital Financial Services (DFS) Small firms and low income households can directly benefit from digital solutions such as mobile money services, online banking and other financial technology innovations. Recent evidence suggests that digital financial inclusion could significantly contribute to economic growth, reduce poverty and narrow income inequalities without necessarily causing adverse effects on financial stability given the appropriate regulatory framework2.", "corpus_id": 236802256, "venue": "", "year": 2020, "author_names": [ "Immaculate Machasio" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "236268171", "title": "Cash, credit card, or mobile? Examining customer payment preferences at chain restaurants in Taiwan", "abstract": "During the COVID 19 pandemic, restaurant customers tended to avoid cash payment to prevent interpersonal contact, resulting in an increased global trend of mobile pay. Following this trend, this study aims to examine why consumers vary in their payment preferences at chain restaurants (mobile vs. traditional payments) as well as how their preferences influence their perceptions and intentions to use mobile payments. Research findings were derived from two online panel surveys with a total of 1,200 Taiwanese mobile phone users. Regression analyses and analysis of variance were used to examine the antecedents and consequences of the preferred payment methods at chain restaurants. The results showed that customers who preferred traditional payment methods (cash or credit card) perceived mobile payment as not very useful, somewhat risky, and not popular within their social groups. On the contrary, more innovative and venturous customers perceived mobile payment as very convenient, low risk, and fun to use. This research provides valuable information for chain restaurant owners to develop strategies to increase the use of their mobile apps based on customers' preferred payment methods. [ABSTRACT FROM AUTHOR] Copyright of Journal of Foodservice Business Research is the property of Taylor Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.", "corpus_id": 236268171, "venue": "", "year": 2021, "author_names": [ "Chun-Chu Chen", "Hsiangting Shatina Chen" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "237384239", "title": "Pro social Preferences and Risk Aversion with Different Payment Methods: Evidence from the Laboratory", "abstract": "The mobile payment technology has converted many of our face to face transactions virtual. With the advance of smart devices and financial technologies in place and the shock of COVID 19, economic transactions involving mobile payments are becoming increasingly preferred globally. For instance, using a mobile to purchase goods is faster, more hygiene and private than cash payment. However, empirical evidence is scarce for whether people would react differently when they are paid with mobile or cash. In this paper, we aim to fill this gap. In particular, we examine whether cash and mobile payment methods have an impact on prosocial decisions and risk attitudes using standard laboratory games in China. In dictator, ultimatum games as well as the conventional Holt and Laury (2002) risk assessment, we find significant payment effects that people are more generous when they are using the mobile payment method compared to cash; while we find an insignificant payment effect in risk attitude.", "corpus_id": 237384239, "venue": "", "year": 2021, "author_names": [ "Jingping Li" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "234538154", "title": "The Barriers towards the Adoption of E Wallet Payment System", "abstract": "Many countries including Malaysia are aiming for cashless society, in which represent the transition of business transaction from cash to electronic based transactions Hence, the escalating trend of using electronic payment system can be observed especially during the COVID 19 crisis where consumers are transitioning to electronic commerce (e commerce) as well as mobile commerce (m commerce) business, however there are consumers who are not keen on e wallet usage Thus, this research aims to investigate the barriers towards the adoption of E Wallet payment system Based on Innovation Resistance Theory (IRT) the barriers refer to the factors of value barrier (VB) usage barrier (UB) risk barrier (RB) and perceived cost barrier (PCB) The results of the research were obtained from 248 respondents of fourth year students in the Faculty of Entrepreneurship and Business, University Malaysia Kelantan with the help of Krejcie and Morgan table sampling method and through the use of questionnaire Besides, Statistical Package of Social Sciences (SPSS) method and Spearman's correlation analysis were also used to analyze the data from the questionnaire It was found that value barrier, usage barrier, risk barrier as well as perceived cost barrier have a significant relationship with the adoption of E wallet payment system As the results highlighted the barricades that cease an individual from using e wallet despite of its benefits, the policy maker can ponder the result to accelerate the adoption of e wallet to a more desirable level in the nation (c) International Research Publication House", "corpus_id": 234538154, "venue": "", "year": 2020, "author_names": [ "Nur Izzati Mohamad Anuar", "Nik Malini Nik Mahdi", "Nik Alif Amri Nik Hashim", "Siti Rohana Mohamad", "Siti Afiqah Zainuddin", "Nur Farahiah Azmi", "Wan Farha Wan Zulkiffli" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "235190429", "title": "Determinants of the Intention to Use Cross Border Mobile Payments in Korea among Chinese Tourists: An Integrated Perspective of UTAUT2 with TTF and ITM", "abstract": "With the acceleration of global economic integration and digital economy, cross border mobile payment has gained growing attention. On the other hand, as COVID 19 keeps on spreading, the popularization of cross border mobile payment can lower the risk of infection caused by cash payment of tourists. However, though previous researchers already examined mobile payment users' behavioral intention from different perspectives, these research findings tend to concentrate on the non cross border section of mobile payment. Therefore, the purpose of this research is to examine factors influencing cross border mobile payment use intention from the user perspective, and combining three theoretical models, chiefly UTAUT2 (extended unified theory of acceptance and use of technology) ITM (initial trust model) and TTF (task technology fit) In this research, 786 Chinese with the experience of using cross border mobile payment while traveling to South Korea are adopted as respondents, and the structural equation model is used to empirically analyze the data of these research samples. The study found that initial trust, performance expectancy, effort expectancy, facilitating conditions, price value, task technology fit, and initial trust have significant effects on use intention. Research findings of this paper can deepen people's understanding of users' intention to use cross border mobile payment, and provide theoretical support for the development of cross border mobile payment. (c) 2021 by the authors. Licensee MDPI, Basel, Switzerland.", "corpus_id": 235190429, "venue": "J. Theor. Appl. Electron. Commer. Res.", "year": 2021, "author_names": [ "Runze Wu", "Jong-Ho Lee", "Xiu-Fu Tian" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "235420386", "title": "Facial Information Protection by Mosaicking Faces in Video Dissemination", "abstract": "In the past ten years, the popularization of photography equipment and wireless internet significantly reduces the cost of filming and disseminating videos. However, the frequent video dissemination brings various information security issues. Especially during the COVID 19 pandemic, the sudden growth of videotelephony inevitably increases the risk of information leakage. Nowadays, as more and more people consider information security their priority, it is necessary and meaningful to improve information protection technology in video dissemination. Among various information security issues, the leakage of human facial information is one of the most urgent issues. As a unique human biological characteristic, facial information widely applies in identity authentication, mobile payment and business analysis. Meanwhile, video is the fundamental information carrier of human interactions and thus contains considerable human facial information. Therefore, protecting human facial information in video dissemination is a crucial component of information protection. Currently, mosaicking human face in the video is a straightforward and effective approach to protect facial information as Figure 1 [7] However, the available methods of mosaicking human faces are still far from satisfying level. On the search engine, the most common approach for mosaicking human face is provided by a paid application Filomra[3] However, Filomra only provides a basic mosaicking function for a fixed rectangle area in video and performs poorly even with small facial movements. In our project, we apply object tracking, Gaussian filtering and mosaicking effect to bring users better quality of facial information protection. Object tracking is a useful technique helping to identify and locate objects, and can be commonly used on human, vehicles, to name a few, and Figure 1. Example for mosaicking faces during an interview", "corpus_id": 235420386, "venue": "", "year": 2021, "author_names": [ "Yijie Yang" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "220264945", "title": "A COVID 19 Risk Assessment Decision Support System for General Practitioners: Design and Development Study", "abstract": "Background The coronavirus disease (COVID 19) has become an urgent and serious global public health crisis. Community engagement is the first line of defense in the fight against infectious diseases, and general practitioners (GPs) play an important role in it. GPs are facing unique challenges from disasters and pandemics in delivering health care. However, there is still no suitable mobile management system that can help GPs collect data, dynamically assess risks, and effectively triage or follow up with patients with COVID 19. Objective The aim of this study is to design, develop, and deploy a mobile based decision support system for COVID 19 (DDC19) to assist GPs in collecting data, assessing risk, triaging, managing, and following up with patients during the COVID 19 outbreak. Methods Based on the actual scenarios and the process of patients using health care, we analyzed the key issues that need to be solved and designed the main business flowchart of DDC19. We then constructed a COVID 19 dynamic risk stratification model with high recall and clinical interpretability, which was based on a multiclass logistic regression algorithm. Finally, through a 10 fold cross validation to quantitatively evaluate the risk stratification ability of the model, a total of 2243 clinical data consisting of 36 dimension clinical features from fever clinics were used for training and evaluation of the model. Results DDC19 is composed of three parts: mobile terminal apps for the patient end and GP end, and the database system. All mobile terminal devices were wirelessly connected to the back end data center to implement request sending and data transmission. We used low risk, moderate risk, and high risk as labels, and adopted a 10 fold cross validation method to evaluate and test the COVID 19 dynamic risk stratification model in different scenarios (different dimensions of personal clinical data accessible at an earlier stage) The data set dimensions were (2243, 15) when only using the data of patients' demographic information, clinical symptoms, and contact history; (2243, 35) when the results of blood tests were added; and (2243, 36) after obtaining the computed tomography imaging results of the patient. The average value of the three classification results of the macro area under the curve were all above 0.71 in each scenario. Conclusions DCC19 is a mobile decision support system designed and developed to assist GPs in providing dynamic risk assessments for patients with suspected COVID 19 during the outbreak, and the model had a good ability to predict risk levels in any scenario it covered.", "corpus_id": 220264945, "venue": "Journal of Medical Internet Research", "year": 2020, "author_names": [ "Ying Liu", "Zhixiao Wang", "Jing-jing Ren", "Yu Tian", "Min Zhou", "Tianshu Zhou", "Kangli Ye", "Yinghao Zhao", "Yunqing Qiu", "Jingsong Li" ], "n_citations": 27, "n_key_citations": 1, "score": 0 }, { "doc_id": "230097112", "title": "MOBILE PAYMENT ADOPTION INTENTION DURING PANDEMIC COVID 19 IN INDONESIA", "abstract": "Essentially, the fast development of technology, especially the internet, has created a shift in consumer behaviour with regards to shopping that has leaned toward online shopping. This drives the sprouting of many different types of mobile payment (M payment) that can be used as a payment tool. Moreover, the world is currently facing the COVID 19 pandemic, in addition, Indonesia is currently doing a mass scale social distancing (PSBB) to stop the infection of COVID 19, among other things limiting out of the home movement, and practicing physical distancing. This appeal makes shops advising payments using M payment or cashless. Hence, the main purpose of this study is to identify the impact of the COVID 19 pandemic on consumer attitude in Indonesia specifically in the adoption of mobile payment (M payment) as the safe way to do payments. The assumption of M payment adoption is based on situational influences, personal knowledge, and perceived usefulness. The research model has been empirically tested using 217 responses from a field questionnaire conducted in a number of large cities in Indonesia by using the multiple regression analysis techniques. The findings of the study reveal that situational influences, personal attitude, personal knowledge have a significant effect on M payment adoption in this global pandemic of Covid 19. Meanwhile, perceived usefulness has no significant effect on M payment adoption in this global pandemic of Covid 19. A suggestion for the M payment providers, despite PU having no significant effect, it continues to be one of the drawing factors for people to use M payment, hence it's best for the M payment to continue providing benefits to its users to increase cashless payment in order to stop the spread of COVID 19. Why is it important to continue providing benefits for users? Because this study has shown that personal attitudes and personal knowledge have a significant effect on the interest of M payment users, which means during this COVID 19 pandemic, positive attitude and people's knowledge regarding M payment has been shaped due to the situation, therefore, by continuously providing benefits, M payment platforms could increase the number of people using M payment.", "corpus_id": 230097112, "venue": "", "year": 2020, "author_names": [ "Dewi Mustikasari Immanuel", "Yuli Kartika Dewi" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "115183047", "title": "Dustproof spinning frame motor type spindle based on stator winding and manufacturing method thereof", "abstract": "The invention relates to a dustproof spinning frame motor type spindle based on a stator winding. The dustproof spinning frame motor type spindle comprises a motor rotor, wherein the motor rotor is fixed by means of a bearing in an upper sleeve of a spindle blade seat and an axial limit device on a motor end cover; stator cores are fixed on a motor casing at the two sides of the motor rotor; motor windings are wound on the front ends and the rear ends of the stator cores; the shaft extension of the rotating shaft of the motor rotor is directly used as a spindle blade; front end winding end covers are mounted at the front ends of the stator cores; rear end winding end covers are mounted at the rear ends of the stator cores; the front end winding end covers enclose the motor windings at the front ends of the stator cores; the rear end winding end covers enclose the motor windings at the rear ends of the stator cores. The invention also relates to a manufacturing method of the spinning frame motor type spindle. By using the dustproof spinning frame motor type spindle based on the stator winding and the manufacturing method of the spinning frame motor type spindle, the dustproof function of the stator winding is realized.", "corpus_id": 115183047, "venue": "", "year": 2013, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "65314036", "title": "Frequency conversion control circuit for main motor of spinning frame", "abstract": "The utility model relates to the technical field of a spinning frame, in particular to a frequency conversion control circuit for a main motor of the spinning frame, which is characterized in that a Rolla speed sensor S1, a spindle speed sensor S2 and a stopping main motor sensor S3 are respectively connected with the pins 01, 00 and OE of a programmable logic controller (PLC) the pins COM 20, Y20, Y21, Y 22 and Y23 of the PLC are respectively connected with the pins 20,28, E1, E2 and E3 of a frequency converter, the pin 11 of the PLC is connected with the pin K21 of the frequency converter after being sequentially connected with a main air switch Q1, a stop button S7 and a sensor S6, the pins R,S,T and PE of the frequency converter are respectively connected with the three phases L1, L2, L3 and the grounding end PE of a power supply, and the frequency converter is accessed in a main motor M1. Compared with the prior art, since the frequency converter is adopted, the energy consumption can be saved, the running speed can be carried out according to different spinning time intervals, the spinning breakage can be reduced, the finished product rate can be increased, the production efficiency and the product quality can be improved, and simultaneously the mechanical wear can be reduced.", "corpus_id": 65314036, "venue": "", "year": 2010, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "114035742", "title": "The Symmetrical Lifting Device in the Pulley System of the Ring Spinning Frame", "abstract": "In order to solve the problem of the transmission accuracy drop due to error accumulation produced by the long pieces of the ring frame,through the modification of the lifting device of the stationary pulley system into the symmetrical lifting device with movable pulley system,the stress condition of the motor and gearbox is improved with good transmission accuracy and longer service life of the motor and gearbox,thus more suitable for the configuration of spinning frame with excess length.", "corpus_id": 114035742, "venue": "", "year": 2015, "author_names": [ "Guoliang Ya" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "111466638", "title": "The Innovation and Development in the Driving System on the Spinning Frame", "abstract": "Introduction is made to the defects of current spinning frame of the conventional system,and the idea of the innovation of the driving system on the modern spinning frame.Analysis is done to what is in the innovation and what is in future innovation from the aspects of the drafting,twisting and winding in the driving system and the suction system and the coordination and control of the whole frame.It is highlighted that the transmission system should use new motor including separated driven motor,electric spindle,and the inverter control and the servo digital control technology is preferred,realizing the electromechanical integration,and the structure simplicity and intelligent control for the purpose of energy saving,labor saving,labor productivity increase and cost reduction of the production.", "corpus_id": 111466638, "venue": "", "year": 2015, "author_names": [ "Liu Rongqin" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "117307878", "title": "Siro spinning, color spinning section and color covering yarn spinning frame device and spinning process", "abstract": "The invention discloses a siro spinning, color spinning section and color covering yarn spinning frame device, comprising a spinning frame body. The spinning frame body comprises front rollers, middle rollers, rear rollers and rough yarn hanging ingots; the siro spinning, color spinning section and color covering yarn spinning frame device also comprises a servomotor transmission control mechanism, a three hole horn opening and a filament feeding mechanism; the front rollers and the middle rollers are driven by a main motor of the spinning frame body; the rear rollers are driven by the servomotor transmission control mechanism; the three hole horn opening is positioned between the middle rollers and the rear rollers and the like. The covering yarn process, the section color yarn process and the siro spinning process are combined by the spinning frame, yarns are controlled to be fed by adopting the three hole horn opening with a special structure, so the industrial production of the siro spinning covering yarns is realized. The spinning frame device is simple in structure, convenient to operate and stable in process during spinning, and the formed yarns have a special structure and a novel appearance.", "corpus_id": 117307878, "venue": "", "year": 2014, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "112336620", "title": "Design of spinning frame electronic cam", "abstract": "The cam is the core component of the winding mechanism of the spinning frame. The design of cam is one of the most important and difficult technologies of textile machineries. The traditional mechanical cam has such drawbacks as unstable motion,easy wear,and difficulty to be replaced,etc.Therefore,an electronic cam of the spinning frame is designed to simulate the movement of the traditional mechanical cam. The article briefly discusses the driving system of the electronic cam firstly,which is composed of Siemens PLC,touch panel,servo drivers,servo motor,reducer and ring plate lifting mechanism. Then,the mathematical model of the electronic cam is given,and the corresponding digital system of electronic cam is established. This study has laid a foundation for designing electronic winding mechanism of the spinning frame.", "corpus_id": 112336620, "venue": "", "year": 2013, "author_names": [ "Cao Jin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "117375426", "title": "Spinning spinning frame control system", "abstract": "The invention discloses a spinning machine spinning control system comprising a PLC, at least one spinning machine controller group, and at least one node controller in one to one correspondence to the spinning machine controller group. Each spinning machine controller group comprises multiple spinning machine controllers. Each spinning machine controller is used for controlling a spindle motor to operate. The PLC controller is in communication connection with all node controllers. Each node controller is in communication connection with all spinning machine controllers in the corresponding spinning machine controller group. According to the spinning machine spinning control system, an operator may timely know the running state of each spindle motor. The spinning machine spinning control system controls each single spindle, reduces mechanical loss, and improves control precision.", "corpus_id": 117375426, "venue": "", "year": 2013, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "146576871", "title": "Spinning frame whistle pipe cotton adsorbing fan", "abstract": "The utility model relates to a spinning frame whistle pipe cotton adsorbing fan. The spinning frame whistle pipe cotton adsorbing fan is provided with an air inlet, a machine shell, a motor and an impeller. The air inlet is arranged on the inlet side of the impeller, the motor is fixedly arranged on the machine shell through a fastener, and the impeller is arranged on a rotating shaft through a rotor front end bearing of the motor. An upper air outlet and a lower air outlet are arranged on the shell walls of the machine shell. Due to the fact that the upper air outlet and the lower air outlet are arranged on the shell walls of the machine shell, broken yarn in spinning can be absorbed effectively, work efficiency is improved, weight of a complete machine is reduced, and energy consumption is reduced.", "corpus_id": 146576871, "venue": "", "year": 2012, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "115788084", "title": "Spinning frame electric motor type spindle", "abstract": "The invention discloses a motor typed spindle of a spinning machine which comprises a spindle rod, a spindle rod holder and a motor winding, wherein, the end of the spindle rod is connected with the spindle rod holder, the motor winding surrounds the lower part of the spindle rod, and the spindle rod and the motor winding respectively form a rotor and a stator of a motor. The motor typed spindle is characterized in that the motor which is composed of the spindle rod and the motor winding is a brushless direct current motor, a spindle rod sleeve is sheathed and fixed at the lower part of the spindle rod, a permanent magnet is fixed at a corresponding position of the motor winding outside the spindle rod sleeve, a bearing is fixed inside an upper cannula of the spindle rod holder, a motor shell is fixed on the spindle rod holder, and a rotary speed sensor of the motor is fixed at the inner side of the motor shell. The motor typed spindle of the spinning machine adopts the brushless direct current motor, and not only maintains the characteristics of quick response and large pull in torque of direct current motors, but also avoids the deficiency of sparks and carbon powder, etc. Furthermore, the motor typed spindle saves more materials and energy consumption than existing mechanical spindles, and has long service life and easy maintenance.", "corpus_id": 115788084, "venue": "", "year": 2008, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "111464581", "title": "The Creation and the Progress of the Modern Spinning Frame", "abstract": "Introduction is made to the new spinning technology,new process and new equipment including low moment twisting spinning,embedded spinning,compact spinning,long frame with multi spindles,group winding,spinning and winding combination,new auto small machine winding.Summerization is given to the power economy technology including power saving motor,multi motor,motor driven spindle system and small spindle wharve.Analysis is done to the fancy spinning,special spinning,draft multiply inclrease and the roller diameter.Conclusion is made that modern spinning frame is in progress with the orientation of high production with high quality,energy economy with lower consumption,small labor and lower cost.", "corpus_id": 111464581, "venue": "", "year": 2011, "author_names": [ "Zhang Yi" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "219767985", "title": "Inhibited combustion of graphene paper by in situ phosphorus doping and its application for fire early warning sensor", "abstract": "Abstract Although traditional fire detectors are widely used in many occasions, they still show some limitations, such as slow fire response and poor resistance to severe conditions. Thus, it is urgent to design and exploit early fire warning device with ultrafast response and flame retardant ability to provide timely and fast alarm. Herein, graphene oxide paper functionalized with phosphoric acid (GO PA) is fabricated by a facile and environmentally friendly water evaporation induced self assembly approach. Based on the flame induced electrical resistance transformation characteristic of GO PA, a fire warning detector is designed to reliably monitor early fire. Fire alarm can be triggered within 0.5 s when GO PA samples are attacked by fire. The GO PA composite paper is more sensitive than GO based fire sensors reported in the literature. Phosphorus atoms are in situ doped into graphene structure during flame exposure. Combustion reaction of GO is significantly retarded by the incorporated PA, thus fire duration time of GO is greatly improved. This work paves a new way to improve fire detection performance of GO based sensors. This work provides a guide for the development of advanced fire detection and early warning sensors to provide reliable and continuous alarm signals.", "corpus_id": 219767985, "venue": "", "year": 2020, "author_names": [ "Gongqing Chen", "Bihe Yuan", "Sheng Shang", "Xianfeng Chen", "Hongji Tao", "Yuanyuan Zhan" ], "n_citations": 21, "n_key_citations": 0, "score": 1 }, { "doc_id": "220328624", "title": "Tailoring Electronic and Magnetic Properties of Graphene by Phosphorus Doping.", "abstract": "The electronic and magnetic properties of graphene can be modulated by doping it with other elements, especially those with a different number of valence electrons. In this article, we first provide a three dimensional reconstruction of the atomic structure of a phosphorus substitution in graphene by using aberration corrected scanning transmission electron microscopy. Turning then to theoretical calculations based on density functional theory (DFT) we show that that doping phosphorus in various bonding configurations can induce magnetism in graphene. Our simulations reveal that the electronic and magnetic properties of P doped (Gr P) and/or phosphono functionalized graphene (Gr PO3H2) can be controlled by both the phosphorus concentration and configurations, ultimately leading to ferromagnetic (FM) and/or antiferromagnetic (AFM) features with the transition temperature up to room temperature. We also calculate core level binding energies of variously bonded P to facilitate X ray photoelectron spectroscopy based identification of its chemical form present in P doped graphene based structures. These results may enable the design of graphene based organic magnets with tailored properties for future magnetic or spintronic applications.", "corpus_id": 220328624, "venue": "ACS applied materials interfaces", "year": 2020, "author_names": [ "Rostislav Langer", "Piotr Blonski", "Christoph Hofer", "Petr Lazar", "Kimmo Mustonen", "Jannik C Meyer", "Toma Susi", "Michal Otyepka" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "225145601", "title": "Phosphorus doping and addition of V2O5 into Pt/graphene resulting in highly enhanced electro photo synergistic catalysis for oxygen reduction and hydrogen evolution reactions", "abstract": "Abstract Both the introduction of photo responsive metal oxide and the heteroatoms doping into Pt based catalysts may be a promising strategy to enhance its catalytic properties. In this paper, one pot solid phase synthesis was employed to synthesize Pt (P) V2O5/GNs catalyst, and it is shown that the addition of photo responsive V2O5 and the doping of P are successfully achieved. Electrochemical measurements show that the Pt (P) V2O5/GNs exhibits attractive bi functional electrocatalytic property for ORR and HER, in comparison with the commercial PtRu/C JM catalyst. More importantly, Pt (P) V2O5/GNs presents much better electro photo synergistic catalysis both for ORR and HER due to its excellent photo responsive properties of V species in Pt (P) V2O5/GNs, resulting in drastically enhanced catalytic activity and stability under the simulated sunlight irradiation.", "corpus_id": 225145601, "venue": "", "year": 2020, "author_names": [ "Xiaohua Zou", "Zhongshui Li", "Yixin Xie", "Hui Wu", "Shen Lin" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "214102256", "title": "Surface engineering of phosphorus low doping palladium nanoalloys anchored on the three dimensional nitrogen doped graphene for enhancing ethanol electroxidation", "abstract": "Abstract The development of superior supporting materials supported surface engineered metallic nanocrystals is desired and necessary for promoting the electrocatalytic performance of ethanol electroxidation. Additionally, the facile and mild synthetic strategy for advanced electrocatalyst is also urgently needed. Herein, a new catalyst comprising of phosphorus low doping palladium nanoalloys uniformly anchored on the three dimensional nitrogen doped graphene (denoted as Pd P/3DNGS) is synthesized by a facile one pot surfactant free hydrothermal method. Notably, the optimized Pd P/3DNGS 2 displays an inspiring enhanced electrochemical behavior to ethanol oxidation in terms of catalytic activity, accelerated kinetics, improved long term stability and boosted anti poisoning capability, which may be derived from the unique architecture of 3DNGS and the providential electron effect between Pd and P. This work provides a new access for rational design of nano electrocatalysts.", "corpus_id": 214102256, "venue": "", "year": 2020, "author_names": [ "Honglei Yang", "Shuwen Li", "Ruifa Jin", "Zhounan Yu", "Guangxue Yang", "Jiantai Ma" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "104416064", "title": "Enhancing thermal oxidation and fire resistance of reduced graphene oxide by phosphorus and nitrogen co doping: Mechanism and kinetic analysis", "abstract": "Abstract The use of reduced graphene oxide (rGO) in high temperature oxidization (HTO) environment, is limited by its poor thermal oxidation and fire resistance. In this study phosphorus and nitrogen co doped reduced graphene oxide (PN rGO) with high oxidation and fire resistance was prepared by hydrothermal and microwave treatment and its thermal oxidation decomposition kinetics and mechanisms were analyzed. Concisely, PN rGO presents an increment of 162 degC in the decomposition temperature relative to undoped rGO (WrGO) and excellent fire resistance with only a ~20% mass loss after burning. Thermal oxidation degradation kinetics reveals that WrGO shows continuously increasing activation energy (E) within a range of 119.7 182.9 kJ/mol, while PN rGO exhibits almost constant E of ~171.8 kJ/mol during main degradation stage. Moreover, the improved E at initial stage by phosphorus/nitrogen doping, combining with the char analysis, suggested that the introduction of strong chemical bonds replacing the reactive oxygen containing groups was the key to preventing the oxidation of rGO. As one of the main properties, the electrical conductivity of PN rGO is well kept after HTO treatment. This work demonstrates that a doping strategy can effectively expand the application of graphene based devices in HTO environment.", "corpus_id": 104416064, "venue": "Carbon", "year": 2019, "author_names": [ "Yuezhan Feng", "Baoyuan Wang", "Xiongwei Li", "Yunsheng Ye", "Jian-Min Ma", "Chuntai Liu", "Xingping Zhou", "Xiaolin Xie" ], "n_citations": 41, "n_key_citations": 0, "score": 0 }, { "doc_id": "104408574", "title": "Surface modulated hierarchical graphene film via sulfur and phosphorus dual doping for high performance flexible supercapacitors", "abstract": "Abstract Graphene surface modification by heteroatom incorporation is an attractive strategy to construct flexible electrochemical capacitors. Herein, the steam assistant heteroatoms of sulfur and phosphorus dual doped graphene film (s SPG) is fabricated via an ice template and thermal activation approach and they demonstrate an excellent pseudocapacitive behavior in flexible electrochemical capacitors. As probed by various microscopic and spectroscopic analysis, well maintained porosity structure is formed during the freeze drying and steam activation treatment; the increased surface roughness is ascribed to heteroatoms doping by the formation of S and P containing functional groups as electrochemical active sites. A flexible device integrated by porous s SPG film shows high pseudocapacitive behavior with high specific capacitance (169 F/g) rate capability (91.7% and cyclic stability (92.5% Even at the bend angle of 120deg, no obvious change of specific capacitance is found indicating a good flexibility of s SPG devices; the current study shows that s SPG is a very promising electrode to realize the practical applications of all solid flexible supercapacitors.", "corpus_id": 104408574, "venue": "Chinese Chemical Letters", "year": 2019, "author_names": [ "Xu Yu", "Chengang Pei", "Ligang Feng" ], "n_citations": 26, "n_key_citations": 0, "score": 0 }, { "doc_id": "204290920", "title": "Defect Rich Graphene Architecture Induced by Nitrogen and Phosphorus Dual Doping for High Performance Supercapacitors", "abstract": "", "corpus_id": 204290920, "venue": "Energy Technology", "year": 2019, "author_names": [ "Chaonan Wang", "Yinye Yang", "Da-sen Ren", "Xu Yu" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "225154539", "title": "Cu Phosphorus Eutectic Solid Solution for Growth of Multilayer Graphene with Widely Tunable Doping", "abstract": "", "corpus_id": 225154539, "venue": "", "year": 2020, "author_names": [ "Min Seok Yoo", "Hyo Chan Lee", "Seon Baek Lee", "Kilwon Cho" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "102127845", "title": "Boron/phosphorus doping for retarding the oxidation of reduced graphene oxide", "abstract": "Abstract B, N and P, N doped reduced graphene oxide (RGO) are prepared through high temperature annealing method using boric acid and phosphoric acid as the B and P sources, respectively. The synthesized RGO and dual doped RGO are well characterized by Fourier transform infrared spectroscopy, X ray diffraction, Raman spectroscopy, X ray photoelectron spectroscopy and transmission electron microscopy. The heteroatoms are found to be introduced into the graphene structure. The low level of doping (approximately 1.10 at% exhibits significant improvement in thermal oxidative stability of RGO. In comparison with neat RGO, the temperature at maximum weight loss rate of B RGO and P RGO increase by as much as 52 degC and 130 degC, respectively. The mechanism for retarding RGO oxidation by B/P doping is clearly proposed. More stable bond configurations are formed in the B/P doped RGO. The doped B and P atoms reduce the reactivity of carbon active sites and inhibit the carbon gasification. This work will provide an understanding of thermal oxidative stability of heteroatoms doped RGO, and offer a strategy for fabricating graphene with elevated temperature applications.", "corpus_id": 102127845, "venue": "", "year": 2016, "author_names": [ "Bihe Yuan", "Weiyi Xing", "Yixin Hu", "Xiaowei Mu", "Junling Wang", "Qilong Tai", "Guojun Li", "Lu Liu", "Kim Meow Liew", "Yuan Hu" ], "n_citations": 60, "n_key_citations": 1, "score": 0 }, { "doc_id": "100206111", "title": "Tuning the Double Layer of Graphene Oxide through Phosphorus Doping for Enhanced Supercapacitance", "abstract": "The electrochemical double layer plays a fundamental role in energy storage applications. Control of the distribution of ions in the double layer at the atomistic scale offers routes to enhanced material functionality and device performance. Here we demonstrate how the addition of an element from the third row of the periodic table, phosphorus, to graphene oxide increases the measured capacitance and present density functional theory calculations that relate the enhanced charge storage to structural changes of the electrochemical double layer. Our results point to how rational design of materials at the atomistic scale can lead to improvements in their performance for energy storage.", "corpus_id": 100206111, "venue": "", "year": 2017, "author_names": [ "Weixin David Song", "Johannes Lischner", "Victoria G Rocha", "Heng Qin", "Jiahui Qi", "Joseph H L Hadden", "Cecilia Mattevi", "Fang Xie", "D Jason Riley" ], "n_citations": 18, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "65972396", "title": "THE ANALYSIS OF SKIMMING AND SCANNING TECHNIQUE TO IMPROVE STUDENTS IN TEACHING READING COMPREHENSION", "abstract": "This research deals with The Analysis of Skimming and Scanning Technique to Improve Students Teaching Reading Comprehension. This research explores the implementation of Skimming and Scanning in reading comprehension and to find out the advantages and disadvantages of skimming and scanning used in learning process. The objective of this research is to find out the effectiveness of skimming and scanning strategy in improving students reading comprehension. Data collection technique focus on participant observation, interviews, and documentation. Skimming and Scanning is the appropriate technique to find the main idea, key word and content of the text without read the whole of the text.", "corpus_id": 65972396, "venue": "PROJECT (Professional Journal of English Education)", "year": 2019, "author_names": [ "Intan Rani Aritonang", "Sandi Lasmana", "D T Kurnia" ], "n_citations": 5, "n_key_citations": 1, "score": 1 }, { "doc_id": "212951106", "title": "Skimming and scanning to facilitate high school students' english reading comprehension", "abstract": "Reading comprehension is a powerful tool which allows the students to develop their cognitive skills through different strategies and which makes an appropriate academic performance possible, taking into account the social context in which it is developed. This case study reports the implementation of skimming and scanning reading strategies in order to facilitate reading comprehension in ninth grade students from a public high school located in El Carmen de Viboral, Antioquia. The participants were 45 students with ages between 14 and 16 years old whose results of their process answered the research question \"how does the implementation of reading strategies facilitate ninth grade students' reading comprehension skill in EFL classes at a public school\" For the data collection were used document analysis of reading activities implemented in class which were applied in 6 class sessions during one month and a half, including non participant observation, pre service teacher's journal and an online platform as a support for the class activities. During the implementation of the strategies through reading exercises it was reflected a greater understanding about the purpose of each one by the aid of some tips to take into account in the use of exams as well as in Pruebas Saber 9deg. The data collection was analyzed through Nvivo program, which facilitated the organization and analysis of data after researchers divided the information into categories such as motivation, concentration, external factors, unknown vocabulary among others results which showed an enhancing in the reading comprehension bearing in mind those aspects that influenced in the reading process.", "corpus_id": 212951106, "venue": "", "year": 2019, "author_names": [ "Alison Elibeth Duque-Valencia", "Valeria Henao-Cardona", "Liliana Ramirez-Rios", "Kellys Johanna Vega-Ruz" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198771374", "title": "The Use of Skimming and Scanning Techniques in Reading Comprehension for Toefl (An Experimental Research at UIN Ar Raniry Banda Aceh)", "abstract": "The present research was conducted to investigate the influence of skimming and scanning techniques in improving students' reading comprehension for TOEFL, especially to build the students' critical thinking in learning reading comprehension. Hence, this research was led to investigate the effect of skimming and scanning techniques in students' reading comprehension for TOEFL. This research was conducted to all the second year students of English Department at UIN Ar Raniry Banda Aceh in the academic year of 2017/2018. The total number of population was 214 students and there were 32 students chosen as the sample of this research which was taken purposively. To fulfill the purpose of the research, the researcher took experimental research involved one class to be given treatment. The data were obtained through pre test, post test, and questionnaire. The results of this research indicated that there was a statistically significant difference between the score of the pre test and the post test. The score of the post test got higher than the pre test. Furthermore, the result of the questionnaire showed that the majority of the students gave positive responses toward skimming and scanning techniques in reading comprehension in TOEFL. Based on the results, it can be concluded that skimming and scanning techniques generate meaningful progress in students' reading comprehension for TOEFL and these techniques are appropriate to be applied.", "corpus_id": 198771374, "venue": "", "year": 2019, "author_names": [ "Abdul Hadi Setiawan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "211941299", "title": "Classifying Vocabulary, Skimming, and Scanning to Improve Reading Comprehension", "abstract": "Esta investigacion tuvo como objetivo mostrar la influencia de clasificar el vocabulario y utilizar estrategias lectoras para mejorar la comprension de textos. Los participantes fueron 15 estudiantes, de 14 a 16 anos, con problemas de comprension de lectura y vocabulario de un instituto de idiomas en particular. Esta fue una investigacion accion con un analisis de datos cualitativos y cuantitativos. Los instrumentos para recopilar datos fueron encuestas previas y posteriores, pruebas previas, registros de aprendizaje, formularios de escaneo y escaneo, mini cuestionarios y una entrevista. Los resultados mostraron que hubo una mejora estadisticamente significativa en el conocimiento de las funciones de las palabras en contexto desde el pre al post examen. El resultado fue una mejora promedio del 28.2% en el rendimiento de los estudiantes. Se calculo Cohen d con un resultado de 1.09 que indica que hubo aprendizaje. La mejora constante en las estrategias lectoras fue ejemplificada por la capacidad de completar correctamente los formatos. De la misma manera, las perspectivas de los estudiantes fueron positivas para esta innovacion. Por lo tanto, es aconsejable aplicar la innovacion con otros alumnos para comparar los resultados de la mejora de la comprension lectora y la proficiencia en general de ingles", "corpus_id": 211941299, "venue": "", "year": 2019, "author_names": [ "Chamba Canar", "Mayra Yadira" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "212782612", "title": "TEACHING AND LEARNING READING BY USING SKIMMING AND SCANNING TECHNIQUE OF ELEVENTH GRADE AT THEMA MUHAMMADIYAH BANDAR LAMPUNGIN ACADEMIC YEAR 2019/2020", "abstract": "", "corpus_id": 212782612, "venue": "", "year": 2019, "author_names": [ "Novi Lailatul Khoirunnisa" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "201399411", "title": "Strengthening of the reading comprehension through skimming and scanning techniques", "abstract": "", "corpus_id": 201399411, "venue": "", "year": 2019, "author_names": [ "Jacome Ortega", "Maria Auxiliadora" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "202255749", "title": "The Effect of Skimming and Scanning for the Eighth Grade Students' Reading Comprehension", "abstract": "", "corpus_id": 202255749, "venue": "", "year": 2019, "author_names": [ "Devita Agya Arfianti" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "210468663", "title": "The influence of skimming and scanning techniques on reading comprehension", "abstract": "", "corpus_id": 210468663, "venue": "", "year": 2019, "author_names": [ "Karina Elizabeth Ponguillo Davila", "Rudy Ruth Montalvo Macias" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "210772325", "title": "The use of skimming and scanning strategies to improve the performance of second grade high school students in part 4 of paper I: reading and writing of the Key English Test (KET) at \"La Union School\"", "abstract": "", "corpus_id": 210772325, "venue": "", "year": 2019, "author_names": [ "Tipiani Mostacero", "Amalia Bibiana" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "149580561", "title": "The Effectiveness of Skimming and Scanning Strategies in Improving Comprehension and Reading Speed Rates to Students of English Study Programme", "abstract": "This research was aimed to know the effectiveness of skimming and scanning strategies to improve students' reading ability indicated by their competence to comprehend texts and their performance in the speed of reading. Pretest posttest control group design was used in this research. Third year students of English Study Programme of FKIP of Palangka Raya University were taken to the reasearch subject. There were 54 students taken which were equally in number grouped into an experimental group and a control group. Both groups were considered to be equal in reading performance with regard to the result of pretest carried out before the experiment. Experimental group was the class where the researcher supervised it, and control group was a group where he did not supervise it with the experiments. The result showed that scores of reading tasks given to the experimental group were significantly different with the control group in which t value was 9.928 with the significance (2 tailed) value was p<0.05. Meanwhile, the speed of reading rates of the experimental group was also significantly different with that of in the control group where t value was 9.325 with the significance (2 tailed) value was p<0.05. Either comprehension or speed rates performed by experimental group showed more excellent than its counterpart. Based on these findings, skimming and scanning strategies were undeniably effective to improve students' comprehension in reading and efficient to boost their reading speed. Keywords: Reading comprehension; Reading speed; Skimming; Scanning", "corpus_id": 149580561, "venue": "", "year": 2018, "author_names": [ "Iwan Fauzi" ], "n_citations": 11, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "209843798", "title": "Grand challenges in model driven engineering: an analysis of the state of the research", "abstract": "In 2017 and 2018, two events were held in Marburg, Germany, and San Vigilio di Marebbe, Italy, respectively focusing on an analysis of the state of research, state of practice, and state of the art in model driven engineering (MDE) The events brought together experts from industry, academia, and the open source community to assess what has changed in research in MDE over the last 10 years, what challenges remain, and what new challenges have arisen. This article reports on the results of those meetings, and presents a set of grand challenges that emerged from discussions and synthesis. These challenges could lead to research initiatives for the community going forward.", "corpus_id": 209843798, "venue": "Software and Systems Modeling", "year": 2020, "author_names": [ "Antonio Bucchiarone", "Jordi Cabot", "Richard F Paige", "Alfonso Pierantonio" ], "n_citations": 35, "n_key_citations": 2, "score": 0 }, { "doc_id": "218487055", "title": "A Model Driven Deep Neural Network for Single Image Rain Removal", "abstract": "Deep learning (DL) methods have achieved state of the art performance in the task of single image rain removal. Most of current DL architectures, however, are still lack of sufficient interpretability and not fully integrated with physical structures inside general rain streaks. To this issue, in this paper, we propose a model driven deep neural network for the task, with fully interpretable network structures. Specifically, based on the convolutional dictionary learning mechanism for representing rain, we propose a novel single image deraining model and utilize the proximal gradient descent technique to design an iterative algorithm only containing simple operators for solving the model. Such a simple implementation scheme facilitates us to unfold it into a new deep network architecture, called rain convolutional dictionary network (RCDNet) with almost every network module one to one corresponding to each operation involved in the algorithm. By end to end training the proposed RCDNet, all the rain kernels and proximal operators can be automatically extracted, faithfully characterizing the features of both rain and clean background layers, and thus naturally lead to its better deraining performance, especially in real scenarios. Comprehensive experiments substantiate the superiority of the proposed network, especially its well generality to diverse testing scenarios and good interpretability for all its modules, as compared with state of the arts both visually and quantitatively.", "corpus_id": 218487055, "venue": "2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)", "year": 2020, "author_names": [ "Hong Wang", "Qi Xie", "Qian Zhao", "Deyu Meng" ], "n_citations": 47, "n_key_citations": 11, "score": 1 }, { "doc_id": "54530685", "title": "Optimal strong convergence rate of a backward Euler type scheme for the Cox Ingersoll Ross model driven by fractional Brownian motion", "abstract": "Abstract In this paper, we investigate the optimal strong convergence rate of numerical approximations for the Cox Ingersoll Ross model driven by fractional Brownian motion with Hurst parameter H 1 2 1 To deal with the difficulties caused by the unbounded diffusion coefficient, we study an auxiliary equation based on Lamperti transformation. By means of Malliavin calculus, we prove that the backward Euler scheme applied to this auxiliary equation ensures the positivity of the numerical solution, and is of strong order one. Furthermore, a numerical approximation for the original model is obtained and converges with the same order.", "corpus_id": 54530685, "venue": "", "year": 2020, "author_names": [ "Jialin Hong", "Chuying Huang", "Minoo Kamrani", "Xu Wang" ], "n_citations": 10, "n_key_citations": 4, "score": 0 }, { "doc_id": "210702242", "title": "\"Why is 'Chicago' deceptive?\" Towards Building Model Driven Tutorials for Humans", "abstract": "To support human decision making with machine learning models, we often need to elucidate patterns embedded in the models that are unsalient, unknown, or counterintuitive to humans. While existing approaches focus on explaining machine predictions with real time assistance, we explore model driven tutorials to help humans understand these patterns in a training phase. We consider both tutorials with guidelines from scientific papers, analogous to current practices of science communication, and automatically selected examples from training data with explanations. We use deceptive review detection as a testbed and conduct large scale, randomized human subject experiments to examine the effectiveness of such tutorials. We find that tutorials indeed improve human performance, with and without real time assistance. In particular, although deep learning provides superior predictive performance than simple models, tutorials and explanations from simple models are more useful to humans. Our work suggests future directions for human centered tutorials and explanations towards a synergy between humans and AI.", "corpus_id": 210702242, "venue": "ArXiv", "year": 2020, "author_names": [ "Vivian Lai", "Han Liu", "Chenhao Tan" ], "n_citations": 20, "n_key_citations": 2, "score": 1 }, { "doc_id": "199583472", "title": "A model driven approach to automate data visualization in big data analytics", "abstract": "In big data analytics, advanced analytic techniques operate on big datasets aimed at complementing the role of traditional OLAP for decision making. To enable companies to take benefit of these techniques despite the lack of in house technical skills, the H2020 TOREADOR Project adopts a model driven architecture for streamlining analysis processes, from data preparation to their visualization. In this article, we propose a new approach named SkyViz focused on the visualization area, in particular on (1) how to specify the user's objectives and describe the dataset to be visualized, (2) how to translate this specification into a platform independent visualization type, and (3) how to concretely implement this visualization type on the target execution platform. To support step (1) we define a visualization context based on seven prioritizable coordinates for assessing the user's objectives and conceptually describing the data to be visualized. To automate step (2) we propose a skyline based technique that translates a visualization context into a set of most suitable visualization types. Finally, to automate step (3) we propose a skyline based technique that, with reference to a specific platform, finds the best bindings between the columns of the dataset and the graphical coordinates used by the visualization type chosen by the user. SkyViz can be transparently extended to include more visualization types on one hand, more visualization coordinates on the other. The article is completed by an evaluation of SkyViz based on a case study excerpted from the pilot applications of the TOREADOR Project.", "corpus_id": 199583472, "venue": "Inf. Vis.", "year": 2020, "author_names": [ "Matteo Golfarelli", "Stefano Rizzi" ], "n_citations": 21, "n_key_citations": 1, "score": 1 }, { "doc_id": "207974528", "title": "A novel tDCS sham approach based on model driven controlled shunting", "abstract": "BACKGROUND Transcranial direct current stimulation (tDCS) a non invasive brain stimulation technique able to transiently modulate brain activity, is surging as one of the most promising therapeutic solutions in many neurological and psychiatric disorders. However, profound limitations exist in current placebo (sham) protocols that limit single and double blinding, especially in non naive subjects. OBJECTIVE To ensure better blinding and strengthen reliability of tDCS studies and trials, we tested a new optimization algorithm aimed at creating an \"active\" sham tDCS condition (ActiSham hereafter) capable of inducing the same scalp sensations perceived during real stimulation while preventing currents from reaching the cortex and cause changes in brain excitability. METHODS A novel model based multielectrode technique optimizing the location and currents of a set of small electrodes placed on the scalp was used to control the relative amount of current delivered transcranially in real and placebo multichannel tDCS conditions. The presence, intensity and localization of scalp sensations during tDCS was evaluated by means of a specifically designed questionnaire administered to the participants. We compared blinding ratings by directly addressing subjects' ability to discriminate across conditions for both traditional (Bifocal tDCS and Sham, using sponge electrodes) and our novel multifocal approach (both real Multifocal tDCS and ActiSham) Changes in corticospinal excitability were monitored based on Motor Evoked Potentials (MEPs) recorded via concurrent Transcranial Magnetic Stimulation (TMS) and electromyography (EMG) RESULTS Participants perceived Multifocal tDCS and ActiSham similarly in terms of both localization and intensity of scalp sensations, whereas traditional Bifocal stimulation was rated as more painful and annoying compared to its Sham counterpart. Additionally, differences in scalp localization were reported for active/sham Bifocal tDCS, with Sham tDCS inducing more widespread itching and burning sensations. As for MEPs amplitude, a main effect of stimulation was found when comparing Bifocal Sham and ActiSham (F(1,13) 6.67, p .023) with higher MEPs amplitudes after the application of Bifocal Sham. CONCLUSIONS Compared to traditional Bifocal tDCS, ActiSham offers better participants' blinding by inducing very similar scalp sensations to those of real Multifocal tDCS both in terms of intensity and localization, while not affecting corticospinal excitability.", "corpus_id": 207974528, "venue": "Brain Stimulation", "year": 2020, "author_names": [ "Francesco Neri", "L Mencarelli", "Arianna Menardi", "Fabio Giovannelli", "Simone Rossi", "Giulia Sprugnoli", "Alessandro Rossi", "Alvaro Pascual-Leone", "Ricardo Salvador", "Giulio Ruffini", "Emiliano Santarnecchi" ], "n_citations": 18, "n_key_citations": 0, "score": 0 }, { "doc_id": "210914695", "title": "Integrated model driven development of self adaptive user interfaces", "abstract": "Modern user interfaces (UIs) are increasingly expected to be plastic in the sense that they retain a constant level of usability, even when subjected to context changes at runtime. Self adaptive user interfaces (SAUIs) have been promoted as a solution for context variability due to their ability to automatically adapt to the context of use at runtime. The development of SAUIs is a challenging and complex task as additional aspects like context management and UI adaptation have to be covered. In classical model driven UI development approaches, these aspects are not fully integrated and hence introduce additional complexity as they represent crosscutting concerns. In this paper, we present an integrated model driven development approach where a classical model driven development of UIs is coupled with a model driven development of context of use and UI adaptation rules. We base our approach on the core UI modeling language IFML and introduce new modeling languages for context of use ContextML and UI adaptation rules AdaptML The generated UI code, based on the IFML model, is coupled with the context and adaptation services, generated from the ContextML and AdaptML model, respectively. The integration of the generated artifacts, namely UI code, context, and adaptation services in an overall rule based execution environment, enables runtime UI adaptation. The benefit of our approach is demonstrated by two case studies, showing the development of SAUIs for different application scenarios and a usability study which has been conducted to analyze end user satisfaction of SAUIs.", "corpus_id": 210914695, "venue": "Software and Systems Modeling", "year": 2020, "author_names": [ "Enes Yigitbas", "Ivan Jovanovikj", "Kai Biermeier", "Stefan Sauer", "Gregor Engels" ], "n_citations": 10, "n_key_citations": 1, "score": 1 }, { "doc_id": "219266278", "title": "Model Driven Development of a Digital Twin for Injection Molding", "abstract": "Digital Twins (DTs) of Cyber Physical Production Systems (CPPSs) enable the smart automation of production processes, collection of data, and can thus reduce manual efforts for supervising and controlling CPPSs. Realizing DTs is challenging and requires significant efforts for their conception and integration with the represented CPPS. To mitigate this, we present an approach to systematically engineering DTs for injection molding that supports domain specific customizations and automation of essential development activities based on a model driven reference architecture. In this approach, reactive CPPS behavior is defined in terms of a Domain Specific Language (DSL) for specifying events that occur in the physical system. The reference architecture connects to the CPPS through a novel DSL for representing OPC UA bindings. We have evaluated this approach with a DT of an injection molding machine that controls the machine to optimize the Design of Experiment (DoE) parameters between experiment cycles before the products are molded. Through this, our reference implementation of the DT facilitates the time consuming setup of a DT and the subsequent injection molding activities. Overall, this facilitates to systematically engineer digital twins with reactive behavior that help to optimize machine use.", "corpus_id": 219266278, "venue": "CAiSE", "year": 2020, "author_names": [ "Pascal Bibow", "Manuela Dalibor", "Christian Hopmann", "Ben Mainz", "Bernhard Rumpe", "David Schmalzing", "Mauritius Schmitz", "Andreas Wortmann" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "213324033", "title": "Estimation for the Discretely Observed Cox Ingersoll Ross Model Driven by Small Symmetrical Stable Noises", "abstract": "This paper is concerned with the least squares estimation of drift parameters for the Cox Ingersoll Ross (CIR) model driven by small symmetrical a stable noises from discrete observations. The contrast function is introduced to obtain the explicit formula of the estimators and the error of estimation is given. The consistency and the rate of convergence of the estimators are proved. The asymptotic distribution of the estimators is studied as well. Finally, some numerical calculus examples and simulations are given.", "corpus_id": 213324033, "venue": "Symmetry", "year": 2020, "author_names": [ "Chao Wei" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "209769176", "title": "Environment interaction model driven smart products through life design framework", "abstract": "ABSTRACT With the advent of Industry 4.0, design of a smart product to work in a smart factory, or at home or city over its lifecycle has to consider its intelligent interaction with its external environment (physical, human and cyberspace environments) Thus, environment interaction driven design of smart products becomes an important design research field, facing a huge challenge of integrating a smart product and its environment interaction design crossing all its life phases. In this paper, a high profile design framework is proposed for guiding environment interaction model driven smart products through life design. It has three core elements: (1) a generic environment interaction model of a smart product through life phases, which can help map out the interaction requirements between the smart product and other interaction elements through life phases, (2) a smart product design process model for guiding product and its interaction design at each phase and (3) a design strategy of smart products through life design. Its implementation feasibility is demonstrated with an industrial case study, showing that it is helpful to implement design solutions to a smart product for satisfying intelligent interactions with its external environments through life phases.", "corpus_id": 209769176, "venue": "Int. J. Comput. Integr. Manuf.", "year": 2020, "author_names": [ "Haizhu Zhang", "Shengfeng Qin", "Rong Li", "Yisheng Zou", "Guofu Ding" ], "n_citations": 6, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "198360936", "title": "Applying segmentation and neural networks to detect and quantify marine debris from aerial images captured by unmanned aerial system and mobile device", "abstract": "", "corpus_id": 198360936, "venue": "", "year": 2018, "author_names": [ "Kieu Tran" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "220546081", "title": "TrashCan: A Semantically Segmented Dataset towards Visual Detection of Marine Debris", "abstract": "This paper presents TrashCan, a large dataset comprised of images of underwater trash collected from a variety of sources, annotated both using bounding boxes and segmentation labels, for development of robust detectors of marine debris. The dataset has two versions, TrashCan Material and TrashCan Instance, corresponding to different object class configurations. The eventual goal is to develop efficient and accurate trash detection methods suitable for onboard robot deployment. Along with information about the construction and sourcing of the TrashCan dataset, we present initial results of instance segmentation from Mask R CNN and object detection from Faster R CNN. These do not represent the best possible detection results but provides an initial baseline for future work in instance segmentation and object detection on the TrashCan dataset.", "corpus_id": 220546081, "venue": "ArXiv", "year": 2020, "author_names": [ "Jungseok Hong", "Michael Fulton", "Junaed Sattar" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "207915315", "title": "Detecting Waterborne Debris with Sim2Real and Randomization", "abstract": "From palpable marine debris to microplastics, marine debris pollution has been a perennial problem. In recent years, there is an emergence of largescale clean up efforts making its way around the world. Complimentary to large scale clean up efforts, there is a nascent area in the use of unmanned and remote vehicles for detecting and removing debris. In this project, our focus is on marine debris detection where we propose to train a waterborne debris detector based on a mixture of real and synthetic training samples. We leverage on the capabilities of game engines to generate a variety of distributions and types of marine debris with variations in camera angles and distance from objects. The use of the game engine allows us to get segmentation masks at no expense as the ground truth is known. We further augment the images via domain randomization and mix with the real dataset. All our datasets and model implementations will be publicly available.", "corpus_id": 207915315, "venue": "", "year": 2019, "author_names": [ "Jie Fu", "Ritchie Ng", "Mirgahney Mohamed", "Yi Tay", "Kris Sankaran", "Shangbang Long", "A Canziani", "Christopher Joseph Pal", "Moustapha Cisse" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "41111914", "title": "Review on on line visual ferrographic analysis system for marine diesel engine", "abstract": "Since the traditional ferrographical analysis technology has its own limitations, the research on a new on line visual ferrographical analysis system becomes very important and necessary. Firstly, the paper reviewed the current research on the on line visual system, and discussed three bottleneck problems about the system. They are the control of debris depositing, debris feature extraction and the segmentation of ferrographical images. Afterwards, several essential required functional attributes in an intact on line visual ferrographical analysis system were discussed from a technical point of view. Finally, to solve these bottlenecks, several research directions were proposed, especially on the control of debris depositing and debris segmentation for ferrographical images.", "corpus_id": 41111914, "venue": "2017 2nd International Conference on Image, Vision and Computing (ICIVC)", "year": 2017, "author_names": [ "Jiasheng Song", "Dan Chen", "Yongjian Wang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "222110492", "title": "Detection and identification of plastics using SWIR hyperspectral imaging", "abstract": "Most plastics are typically transparent in the visible spectral range, rendering them challenging to detect using silicon based vision sensors. In this work a SWIR hyperspectral imaging system is used to collect the SWIR hyperspectral signatures as well as spatial information of a variety of plastics outdoors to test this technology for plastic debris detection and identification in future marine and environmental applications. In this study, hyperspectral imaging data have been collected from plastic samples including CPVC, PVC, LDPE, HDPE, PEEK PETG, PC, PP, PS, and Polyester in a natural environment. The data is acquired using a SWIR hyperspectral imaging system sensitive to 900 1700 nm wavelength range. Four spectral indices based on labeled spectral signatures have been identified and used as features to separate plastic materials and for classification of pixels. Semantic segmentation based on plastic materials is achieved in an independent scene with multiple plastic samples using shortest Euclidean distance to labeled feature cluster centers through multi variate data analysis. The results show the capability of this technology and technique to detect and classify different plastics in natural environments under different light conditions.", "corpus_id": 222110492, "venue": "Optical Engineering Applications", "year": 2020, "author_names": [ "Mehrube Mehrubeoglu", "Austin Van Sickle", "Jeffrey Turner" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "226331844", "title": "Towards Optimal Ship Navigation Using Image Processing", "abstract": "Shipping transportation developed over years with the technological advancements. Modern ship navigation is conducted with the help of Automatic Radar Plotting Aid (ARPA) and Electronic Chart Display and Information System (ECDIS) Location map, marine traffic, geographical conditions, and obstacles in a region can be monitored by these technologies. The obstacles may vary from icebergs and ice blocks to islands, debris, rocks, or other vessels in a given vicinity. In this study, we propose an approach for route optimization using twodimensional radar images and image segmentation in an environment with obstacles. The navigation algorithm takes image segmentation results as an input and finds the optimal route (i.e. safest and shortest) One of the advantages of this study is that the obstacles are not solely polygonal, but they may be in any shape, size, and color. The proposed approach has some practical and computational limitations; however, the future unmanned vessels could benefit from the improved applications of this route optimization approach in terms of energy consumption, time, and workforce.", "corpus_id": 226331844, "venue": "ISVC", "year": 2020, "author_names": [ "Bekir Sahin", "Zia Uddin", "Ahmet Soylu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "85006755", "title": "Diffraction patterns as a tool to recognize copepods", "abstract": "Photographs of three species of calanoid copepods were digitized, binarized and edited to remove the debris present in the images and to simulate different degrees of segmentation. Twentyeight segmented images of the three species were generated after pre processing to obtain their digital Fourier transform or diffraction pattern. Ouster analysis was carried out for the images of the copepods and for their diffraction patterns to determine which set of images discriminated genus, species and sex of the selected organisms. The dendrograms of the diffraction patterns had more power of discrimination and 50% less variability. This method is promising, but more research is necessary in order to implement an automated system for plankton identification in the near future. Introduction Even for the most competent plankton taxonomist, the correct identification of a marine microorganism can take a long time (Ortner et ai, 1979; Omori and Ikeda, 1984) In recent years, there has been a decrease in the number of competent plankton taxonomists (Simpson et ai, 1992) which could be the reason for some of the reported synonymies for calanoid copepods. Bjornberg (1981) reports that Acartia lilljeborgii is the same as Acartia denticomis and Nannocalanus minor is the same as Calanus vulgus, and Trujillo Ortfz (1990) reports that Acartia californiensis is the same as Acartia bacorehuisensis. A broad group of researchers have been trying to implement automated systems in order to identify and count organisms in a faster and more accurate way. These systems include the Coulter Counter (Sheldon and Parsons, 1967) the in situ Coulter Counter (Herman and Dauphinee, 1980; Herman and Mitchell, 1981) silhouette photography (Ortner, 1979) and the video camera (Liacopoulos, 1983; Latrous, 1984; Rolke and Lenz, 1984) However, none of these systems ensure complete effectiveness of the taxonomic classification due to the orientation of the organism or the resolution of the image. Another group of researchers have begun to use coherent optical processing for the recognition of planktonic organisms (Cairns et al. 1972; Almeida et al. 1976; Jeffries et al. 1980,1984) A very important part of these techniques is the acquisition of a Fourier transform or diffraction pattern of the organism. The rapid development of computational sciences has made image processing software available to almost everyone in order to obtain diffraction patterns and other image processing tools. Coherent optical processing techniques were introduced by Vander Lugt (1964) The objects they used to test their systems were images of O Oxford University Press 1471 V.A.Zavala Hamz el al. SELECTION OF ORGANISMS AND PHOTOGRAPHS DIGITAL BINARY CONTOURS AND SCANNING DIGITAL DIFFRACTION PATTERNS CORRELATIONS AND DENDROGRAMS OF ORGANISMS AND DIFFRACTION PATTERNS Complate Linkage", "corpus_id": 85006755, "venue": "", "year": 1996, "author_names": [ "Victor A Zavala-Hamz", "Josue Alvarez-Borrego", "Antonio Trujillo-Ortiz" ], "n_citations": 11, "n_key_citations": 0, "score": 0 }, { "doc_id": "211112471", "title": "Quantitative overview of marine debris ingested by marine megafauna.", "abstract": "This review quantifies plastic interaction in marine biota. Firstly, entanglement and ingestion records for all marine birds, mammals, turtles, fish, and invertebrate species, are summarized from 747 studies. Marine debris affected 914 species through entanglement and/or ingestion. Ingestion was recorded for 701 species, entanglement was documented for 354 species. Secondly, the frequency of occurrence of ingestion per species (Sp %FO) was extracted for marine birds, mammals and turtles. Thirdly, for seabird species, average numbers of plastics ingested per individual were determined. Highest Sp %FO and average number of plastics were found in tubenosed seabirds with 41% of all birds analysed having plastics, on average 9.9 particles per bird. The Sp %FO and average number of ingested particles is lower for most other species. However, for certain species, ingestion rates of litter are reason for serious concern. Standardized methods are crucial for future studies, to generate datasets that allow higher level ecosystem analyses.", "corpus_id": 211112471, "venue": "Marine pollution bulletin", "year": 2020, "author_names": [ "Susanne Kuhn", "Jan A van Franeker" ], "n_citations": 55, "n_key_citations": 0, "score": 0 }, { "doc_id": "211028728", "title": "Ranking environmental degradation trends of plastic marine debris based on physical properties and molecular structure", "abstract": "As plastic marine debris continues to accumulate in the oceans, many important questions surround this global dilemma. In particular, how many descriptors would be necessary to model the degradation behavior of ocean plastics or understand if degradation is possible? Here, we report a data driven approach to elucidate degradation trends of plastic debris by linking abiotic and biotic degradation behavior in seawater with physical properties and molecular structures. The results reveal a hierarchy of predictors to quantify surface erosion as well as combinations of features, like glass transition temperature and hydrophobicity, to classify ocean plastics into fast, medium, and slow degradation categories. Furthermore, to account for weathering and environmental factors, two equations model the influence of seawater temperature and mechanical forces. Accumulation of micro and nano plastic in the oceans has emerged as a global challenge. Here, the authors predict a hierarchy of features that regulate their degradation and surface erosion by a thorough analysis of polymer structure, composition, physical properties and degradation data.", "corpus_id": 211028728, "venue": "Nature Communications", "year": 2020, "author_names": [ "Kyungjun Min", "Joseph D Cuiffi", "Robert T Mathers" ], "n_citations": 62, "n_key_citations": 0, "score": 0 }, { "doc_id": "212423141", "title": "The physical oceanography of the transport of floating marine debris", "abstract": "Marine plastic debris floating on the ocean surface is a major environmental problem. However, its distribution in the ocean is poorly mapped, and most of the plastic waste estimated to have entered the ocean from land is unaccounted for. Better understanding of how plastic debris is transported from coastal and marine sources is crucial to quantify and close the global inventory of marine plastics, which in turn represents critical information for mitigation or policy strategies. At the same time, plastic is a unique tracer that provides an opportunity to learn more about the physics and dynamics of our ocean across multiple scales, from the Ekman convergence in basin scale gyres to individual waves in the surfzone. In this review, we comprehensively discuss what is known about the different processes that govern the transport of floating marine plastic debris in both the open ocean and the coastal zones, based on the published literature and referring to insights from neighbouring fields such as oil spill dispersion, marine safety recovery, plankton connectivity, and others. We discuss how measurements of marine plastics (both in situ and in the laboratory) remote sensing, and numerical simulations can elucidate these processes and their interactions across spatio temporal scales.", "corpus_id": 212423141, "venue": "", "year": 2020, "author_names": [ "Erik van Sebille", "", "Kara Lavender Law", "Andrei Bagaev", "Melanie Bergmann", "Andres Cozar", "Matthias Egger", "Baylor Fox-Kemper", "Shungudzemwoyo PGaraba", "Matthew JHoffman", "Atsuhiko Isobe", "Cleo E Jongedijk", "Mikael LAKaandorp", "Albert AKoelmans", "Charlotte Laufkotter", "Laurent Lebreton", "Delphine Lobelle", "Miguel AngelMoralesMaqueda", "Marie Poulain-Zarcos", "Ernesto Rodriguez", "Alan L Shanks", "Won Joon Shim", "Giuseppe Suaria", "Martin Thiel", "Ton S van denBremer" ], "n_citations": 131, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "54853795", "title": "Application Wise Innovation on Intelligent Database Technique", "abstract": "Databases are systems, which are used for storing data. With the increase in information at rapid pace, extraction of relevant information becomes time consuming using traditional databases. Thus, the need of intelligent or smart databases arises. Intelligent database is a system in which automation is applied on conventional database in order to enhance its functionality and efficiency. Intelligent databases help us in making decisions and can respond or act to situations by learning. It has applications in wide areas such as healthcare, automobile, education, information security, business etc. This paper represents various intelligent database techniques, which are further used for implementation of applications of this domain.", "corpus_id": 54853795, "venue": "", "year": 2017, "author_names": [ "Supreet Kaur", "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "59235465", "title": "Countermeasure of Statistical Inference in Database Security", "abstract": "The security management of databases involves complex issues for the companies. The complexity of security measure needs to apply increases with the most complex database. The statistical queries associated with statistical database uses the aggregate functions such as min, max, average and count to provide statistical information about entries. The data vulnerabilities raise the security issues because of a clever combination of statistical queries to obtain confidential information for the individual entry. Undeniably, malpractices of user allow taking advantage of the aggregate functions and compromising the confidentiality. The statistical interference analysis poses significant risk for the security database system. This research proposes intelligent framework which is useful to hide sensitive information in case of combination of statistical queries. Firstly, the framework is useful to define the sensitive information for the decision making of the administrator to set some rules. Secondly, the framework explores the relationship between sensitive and other attributes in case of rule discrimination based on attribute orientation and thus allows making a decision on attributes useful to drive confidential information.", "corpus_id": 59235465, "venue": "2018 IEEE International Conference on Big Data (Big Data)", "year": 2018, "author_names": [ "Umar Albalawi" ], "n_citations": 1, "n_key_citations": 1, "score": 1 }, { "doc_id": "62392335", "title": "Intelligent access control and intrusion detection techniques For web database security", "abstract": "", "corpus_id": 62392335, "venue": "", "year": 2011, "author_names": [ "Natarajan Jaisankar" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "17908977", "title": "Design of intelligent database program for an interactive auto responsive SMS based opinion poll system using triggers and stored procedure", "abstract": "Short Message Service (SMS) has remained an integral part of the mobile phone technology, in spite of the huge evolution experienced in the technology since the last two decades, due to its wide acceptance by mobile consumers as a valuable means of exchanging and broadcasting text messages, and utilizing special applications such as SMS based mobile banking and SMS based control systems. Therefore, there is no gainsaying in the fact that studies and projects aimed at leveraging the mass and steady adoption of SMS will continue to emerge. In this paper, we present procedures for developing an intelligent database program for a SMS based opinion poll system using triggers and stored procedure. The solution we propose, aside benefitting from the data security and integrity and performance optimization of using triggers and stored procedure with data in a secured Relational Database Management System (RDBMS) offers an innovative approach for incorporating intelligence in database for related applications.", "corpus_id": 17908977, "venue": "2014 IEEE 27th Canadian Conference on Electrical and Computer Engineering (CCECE)", "year": 2014, "author_names": [ "Kehinde O Adetiloye" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "218832273", "title": "Research on Intelligent Security Protection of Privacy Data in Government Cyberspace", "abstract": "Based on the analysis of the difficulties and pain points of privacy protection in the opening and sharing of government data, this paper proposes a new method for intelligent discovery and protection of structured and unstructured privacy data. Based on the improvement of the existing government data masking process, this method introduces the technologies of NLP and machine learning, studies the intelligent discovery of sensitive data, the automatic recommendation of masking algorithm and the full automatic execution following the improved masking process. In addition, the dynamic masking and static masking prototype with text and database as data source are designed and implemented with agent based intelligent masking middleware. The results show that the recognition range and protection efficiency of government privacy data, especially government unstructured text have been significantly improved.", "corpus_id": 218832273, "venue": "2020 IEEE 5th International Conference on Cloud Computing and Big Data Analytics (ICCCBDA)", "year": 2020, "author_names": [ "Honbo Yang", "Liangqiang Huang", "Chunfeng Luo", "Qinyong Yu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "209854210", "title": "Design and Implementation of Modbus Protocol for Intelligent Building Security", "abstract": "Internet of Things is a system where appliances are embedded with software, sensors and actuators. The devices are able to transfer data over a network and also communicate with each other [1] The literature reports that many systems based on single mode of monitoring, power or lighting are not integrated into one control system, so there are complex control cumbersome, high operating costs. To solve this problem, we propose a Modbus protocol design for intelligent building security, All these perception control management are integrated into one system. This system adopts the Modbus protocol format for the data communication, the hardware system with processor as ARM5708 industry as the core development board development and design, Using Linux operating system, JavaWeb development and database management technology to achieve data interaction, display, storage, identification and other functions, Completed an embedded network communication protocol gateway and industrial design, and connects the traditional serial connection Modbus fieldbus and Ethernet communication, and finally the application is realized through Modbus TCP protocol. Compared with the previous building security design, we adopted Modbus bus control, which saved the resources of the core development board and effectively applied the Modbus TCP protocol and Modbus RTU protocol. The webpage control end realizes the collection of the temperature and humidity gas concentration of the intelligent building and the detection of the human body infrared. For the purpose of verification and testing, a three story building prototype was built.", "corpus_id": 209854210, "venue": "2019 IEEE 19th International Conference on Communication Technology (ICCT)", "year": 2019, "author_names": [ "Wenzhu You", "Haibo Ge" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "86635826", "title": "Face Recognition using Content Based Image Retrieval for Intelligent Security", "abstract": "This paper try to construct an intelligent security system based on face recognition. The data used in this research are frontal face images and without obstacles, and facial images with obstacles. In this research, we used Content Based Image Retrieval or CBIR method. Approximately 10,000 images used in this work which is collected from internet, police department office, and shooting directly as primary data. Facial image data are stored in the database object based files through process of identification and facial recognition. Consequently, facial images are retrieved using facial similarity techniques. In this stage of identification an application can specify shape of the front face, performs feature extraction, and running intelligent Similarity (matching face data) which open the door automatically This system can be used to minimize the occurrence of criminality occurs nowadays. This system can be used such as for house door security, office doors, and airport gates. The experiments result show that our algorithm quite good in face detection and recognition to open the door.", "corpus_id": 86635826, "venue": "", "year": 2019, "author_names": [ "Sri Karnila", "S Y Irianto", "Rio Kurniawan" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "216104251", "title": "Shield: An Intelligent and Affordable Solution for Home Security", "abstract": "Reliable home security is vital for progression of our societies. Traditional methods to protect house premises against intruders include security guards and CCTV cameras which is labor intensive, expensive and unreliable. In this paper, we propose a wireless, intelligent, affordable and portable IoT based home security system. The input unit consisting of multiple sensors is placed at the entry points of the house. The SONAR, motion and sound sensor capture the situation at entry points. The sensor data is collected and wirelessly transmitted by NodeMCU to the Raspberry Pi server via an online database. The server uses logistic regression classification algorithm to detect human presence at the gate. Once intruder is detected, alerts are generated to the user and camera mounted on the input unit is turned on to take pictures. Facial recognition unit is also incorporated to detect known versus unknown faces. The information of intrusion including image and timestamp are send to the Shield's mobile application.", "corpus_id": 216104251, "venue": "2019 11th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)", "year": 2019, "author_names": [ "Aimen Shahid", "Mahroo Ali", "Mariam Eijaz", "Sidra Minhas", "Nosheen Sabahat" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "52074492", "title": "De identification of metering data for smart grid personal security in intelligent CCTV based P2P cloud computing environment", "abstract": "Various security threats exist in the smart grid environment due to the fact that information and communication technology are grafted onto an existing power grid. In particular, smart metering data exposes a variety of information such as users' life patterns and devices in use, and thereby serious infringement on personal information may occur. Therefore, we are in a situation where a de identification algorithm suitable for metering data is required. Hence, this paper proposes a new de identification method for metering data. The proposed method processes time information and numerical information as de identification data, respectively, so that pattern information cannot be analyzed by the data. In addition, such a method has an advantage that a query such as a direct range search and aggregation processing in a database can be performed even in a de identified state for statistical processing and availability.", "corpus_id": 52074492, "venue": "Peer to Peer Netw. Appl.", "year": 2018, "author_names": [ "Donghyeok Lee", "Namje Park", "Geonwoo Kim", "Seunghun Jin" ], "n_citations": 23, "n_key_citations": 0, "score": 0 }, { "doc_id": "60847093", "title": "Intelligent temporal reasoning Using rules for temporal database Security", "abstract": "", "corpus_id": 60847093, "venue": "", "year": 2008, "author_names": [ "Mariappan Marikkannan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "215717832", "title": "Idiomatic Language Translation and Transfer Learning", "abstract": "Current translation models fall short for a number of translation patterns. One such example is idioms, and in this project we hope to provide better translation of idiomatic expressions within languages by improving upon an implementation of a Neural Machine Translation (NMT) model. We aim to do so by altering the attention mechanism and testing different loss functions in our architecture. Additionally, since state of the art machine translation models take long amounts of time to train, we explore transfer learning as a method to reduce total training time between languages. Specifically, we first train a NMT between English and the Latin script Transliteration of Greek and use this NMT to initialize our parameters on a translation model between English and Greek. We find that the Dual Skew Divergence Loss allows helps in improving the translation accuracy of idiomatic expressions while our transfer learning architecture lead to similar BLEU scores yet took about half the amount of training time compared to a regular English Greek NMT model.", "corpus_id": 215717832, "venue": "", "year": 2020, "author_names": [ "Jupinder Parmar" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "233251236", "title": "Analysis of Indonesian Students' Language Transfer of English Idiomatic Sentences", "abstract": "The complexity of transferring language might mislead students as translators to mistranslate texts due to errors. Errors can be in the form of a message (meaning) or language, which also consists of grammar and lexicon. Transferring language also needs consideration of equivalent language transfer from the source language (SL) to the target language (TL) The present research identifies the error types, the source of errors, and the types of idiomatic translation that were done by English Department students of University of Islam Malang. The subjects of the research were 77 of the fifth semester students who took Translation course. The core data of this research were the students' translation works from English to bahasa Indonesia and unstructured interviews. This study employed a descriptive qualitative design. The data of the research were obtained from the result of the students' translation during the course. The data obtained also showed that more students commit errors on language than errors on message. The errors of language exist in the form of lexical aspect; they are conjunction, verb, and noun. In addition, the source of errors tends to happen because of the interlingual factors than the intralingual factors. The idiomatic transfer from the source language to the target language was done by shifting the meaning of idiom, instead of through word to word translation.", "corpus_id": 233251236, "venue": "", "year": 2021, "author_names": [ "Diah Retno Widowati", "Henny Rahmawati", "Febti Ismiatun" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "141653168", "title": "The principle and effect of redundancy in the retention and transfer of idiomatic expressions in english as a foreign language", "abstract": "The principle and effect of redundancy seem to hinder learning in several domains. In this paper we report on a study that intended to find out whether such redundancy has also negative effects on the learning of idiomatic expressions in English as a Foreign Language. The subjects were two groups of college students exposed to two kinds of multimodal presentations: one group to on screen text, narration and static images and the other to on screen text and narration. According to the redundancy principle, the former presentation contains a redundant element that would lead to cognitive overload. Although results show no major differences between the two groups concerning retention, in transfer differences were found that may be attributed to the semantic features of the vocabulary presented. Received: 04 17 12 Reviewed: 08 21 12 Accepted: 08 23 12 Published: 03 19 13 How to reference this article: Farias, M. Obilinovic, K. Orrego, R. (2013) El principio y efecto de redundancia en la retencion y transferencia de expresiones idiomaticas en ingles como lengua extranjera. Ikala, revista de lenguaje y cultura, 18(1) 13 21.", "corpus_id": 141653168, "venue": "", "year": 2013, "author_names": [ "Miguel Farias", "Katica Obilinovic", "Roxana Orrego" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226379026", "title": "Indonesian English Translation of Idiomatic Noun Phrases:", "abstract": "Idiomatic noun phrases become interesting to be discussed since the occurrence of the phrase's elements has an implicit meaning that should be understood by the speaker of the language. In order to transfer the meaning of the Indonesian idiomatic noun phrase into English, the translator should be able to transfer the meaning or message of every single word or the combination of words in the phrase from the source language into the target language. Related to the phenomena, the current research was conducted. It was a descriptive qualitative study. The data were taken from an Indonesian novel entitled \"Bumi Manusia\" by Pramoedya Ananta Toer, and its translation product in English by Max Lane entitled \"This Earth of Mankind\" In analyzing the translation techniques used in the translation of Indonesian idiomatic noun phrases, the authors used the theory proposed by Molina and Albir (2002) From the analysis, it can be concluded that the techniques used in the translation of Indonesian idiomatic noun phrases into English found in the data source are adaptation, transposition, establish equivalence, generalization, description, literal and amplification. In the translation result, we can see that the translator tried to transfer the equivalent implicit meaning of idiomatic noun phrases into target language text and to make the target text can be easily understood by the target reader.", "corpus_id": 226379026, "venue": "", "year": 2020, "author_names": [ "Ni Luh Gede Liswahyuningsih", "Ketut Artawa", "I Nyoman Udayana", "Made Sri Satyawati" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197741287", "title": "The Idiomatic Competence of Jordanian EFL Undergraduate Students: a Contrastive Pedagogical Study", "abstract": "The present study aimed at investigating the idiomatic competence in English and Arabic that the Jordanian EFL undergraduate students possess. To achieve this, the researcher conducted a Completion Discourse Test (DCT) on 125 students majoring Applied English in the Department of English in the University of Jordan during the academic year (2017 2018) The findings revealed that the Jordanian EFL undergraduate students have a low intermediate competence in understanding the idioms in both languages and in using the Arabic idioms. They, however, showed low level in the use of English idioms. Moreover, the factors of transparency, equivalence, high exposure to English, the common use of some expressions and contextualization were found to have a role in facilitating the students' idiom understanding. Nevertheless, studying the idioms included in the textbooks did not show a better idiomatic competence than those who did not, The negative transfer had a great impact on distracting students and The students had insufficient knowledge of the English pragmatics and semantics.", "corpus_id": 197741287, "venue": "", "year": 2019, "author_names": [ "fuad A shajrawi", "Oqlah Smadi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "233231468", "title": "From Solving a Problem Boldly to Cutting the Gordian Knot: Idiomatic Text Generation", "abstract": "We study a new application for text generation idiomatic sentence generation which aims to transfer literal phrases in sentences into their idiomatic counterparts. Inspired by psycholinguistic theories of idiom use in one's native language, we propose a novel approach for this task, which retrieves the appropriate idiom for a given literal sentence, extracts the span of the sentence to be replaced by the idiom, and generates the idiomatic sentence by using a neural model to combine the retrieved idiom and the remainder of the sentence. Experiments on a novel dataset created for this task show that our model is able to effectively transfer literal sentences into idiomatic ones. Furthermore, automatic and human evaluations show that for this task, the proposed model outperforms a series of competitive baseline models for text generation.", "corpus_id": 233231468, "venue": "ArXiv", "year": 2021, "author_names": [ "Jianing Zhou", "Hongyu Gong", "S Bhat" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "212926746", "title": "MODULATION IN ENGLISH INDONESIAN TRANSLATION OF IDIOMATIC EXPRESSIONS IN MOBILE LEGEND:BANG BANG", "abstract": "Translation is a complicated issue that needs comprehensive skill to transfer other culture which is a written form, modulation sometimes occurs in translating a text from the source text to target text. The main purpose of the study was to analyze the variations of modulation occurred in Mobile Legend: Bang Bang; they were abstract for concrete, negation of opposite, part another part, reversal of term, active for passive, space for time, explicative modulation, interval and limit, and change of symbols. The game was a written document I used to be my data. This final project belongs to qualitative descriptive research. The data are analyzed descriptively without involving numbers for counting or measuring. The data would be analyzed to find the variations of modulation and I classified them into groups; abstract for concrete, explicative modulation, reversal of term, active for passive, negation of opposite, space for time, interval of limits, and change of symbol. The data could be words, phrases, and sentences. As conclusion, the translator tries to find the closest natural meaning in target language but not swerve too far from the original text. I realize that this study is far from perfect. Nevertheless, hopefully, the results of this study will give a contribution to the translation study. Besides, it can also help the students who are interested in learning English especially about translation that needs carefulness.", "corpus_id": 212926746, "venue": "", "year": 2019, "author_names": [ "Wahyu Junianto" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "132051806", "title": "IDIOMATIC EXPRESSIONS: \"MUCH ADO ABOUT NOTHING\" OR A REAL CHALLENGE FOR TRANSLATORS", "abstract": "Rendering idiomatic expressions from SL into TL is one of the most challenging tasks in the translation process. Identifying, correctly interpreting and finding a proper translation equivalent for idioms often become a major obstacle for translators. Idiomatic expressions are language and culture bound and their proper transfer from ST to TLrequires an excellent command of both mother tongue and foreign language as well as of SL and TL culture. The paper aims to investigate the process of translating idioms from English into Macedonian. The goal is to ascertain what strategies are employed in translating idioms (e.g. idioms with the same form and meaning; idioms with the same meaning but different form; literal translation of idioms; omission of idioms, etc. For the purposes of this research, the paper offers an analysis of a random selection of idiomatic expressions used in Shakespeare's romantic comedy, \"Much Ado About Nothing\" and their translation equivalents in the Macedonian translation of the play, \"Od vlakno ortoma\" by Dragi Mihajlovski. The research unequivocally points to one strategy being clearly predominant translating an idiom from SL with an idiom with similar meaning but different form from TL. The research further reveals that in the effort to preserve the same aesthetic effects in the target text, and depending on the context, the translator, in fact, employs a variety of translation strategies. At points the translator even introduces idioms where there are no such expressions in the original.", "corpus_id": 132051806, "venue": "", "year": 2018, "author_names": [ "Silvana Neshkovska" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "19147730", "title": "Integrating Smart Objects into Self Guided Exhibitions: Challenges of Supporting Self Guided Exhibitions through Non idiomatic Technologies", "abstract": "This position paper presents key challenges that have been identified in the early stages of designing interactive digital, self guided, exhibition sites through the use of low cost context aware technologies. The next wave of smart technologies, such as context aware objects and devices, enable new opportunities for facilitating self guided exhibitions through digital experience layers. However, these technologies often fail to gain traction when the user does not understand how to operate or interact with these systems, due to new or unfamiliar interaction modes. The purpose of this paper is to present work in progress of implementing two app prototypes: 1) a mixed reality game for smartphones and 2) a digital guide, that uses Bluetooth beacons at a fully automated exhibition in Northern Denmark. Two of key challenges that this research projects revolves around is how to on board new users and how to transfer experiential knowledge from other systems that the user is familiar with to a system that is unknown to the user. Through an iterative design process, two prototypes are being developed to investigate these challenges. Copyright (c) 2018 for this paper held by its author(s) Copying permitted for private and academic purposes. Rameshnath Krishnasamy", "corpus_id": 19147730, "venue": "SmartObjects@CHI", "year": 2018, "author_names": [ "Rameshnath Krishnasamy" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "28953840", "title": "Iphras as an E Learning Platform for Idiomatic Competence.", "abstract": "The integration of E learning has expanded in a variety of directions to a degree that its successful application is of great importance to all sectors of education and training. E learning can offer unquestionable advantages to everyone involved in both the assessment and the knowledge transfer process (Owens and Floyd 2007; Luchoomun, McLuckie and van Wesel 2010; Damyanov and Tsankov 2016) Some of the challenges of e learning methods rest in choosing the right platform, and in determining the scope of the selected material as well as the adequacy of its user friendly methodology. Among the features of e learning platforms that are applicable to a wider audience is the criterion of multi language application. As regards E learning in foreign language education, there are three pragmatic and cultural aspects which are often omitted from the e learning system: 1) the transfer of idiomatic competence; 2) the acquisition of cultural concepts; and 3) the inclusion of small and endangered languages. This is not the case with the elaboration of the e learning platform IPHRAS Interphraseologie fur Studien und Berufsmobile. The proposed paper presents its main achievements and focuses on the methodology for foreign language learning in a multilingual electronic environment. The process is facilitated by the incorporation of thematically structured multiword units (idioms and collocations) Its priority is easy access to a variety of languages, including Greek, Turkish, Romanian, Bulgarian, through more popular languages such as English and German. The degree of translation equivalence of its elements facilitates not only multilingualism, but also the initial phase of mastering the vocabulary of additional languages. The IPHRAS platform was elaborated by an international team of Balkan researchers and language instructors and funded by the European Commission within the Lifelong learning program.", "corpus_id": 28953840, "venue": "", "year": 2017, "author_names": [ "Teodora Kiryakova-Dineva", "Milena Levunlieva", "Vyara Kyurova" ], "n_citations": 3, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "138626008", "title": "EXPERIMENTAL STUDY OF 304 STAINLESS STEEL FATIGUE LIFE CONSIDERING MATERIAL PRE STRAIN HARDENING EFFECT", "abstract": "304 stainless steel( 304 SS) strain hardening pressure vessels are widely used to store and transport liquefied gas. It is important to investigate the fatigue properties of strain hardening pressure vessels. In this paper,low cycle fatigue tests under strain controlled of 304 SS pre strain hardening materials are performed. In the test,the pre strain are 10% and 15%,and the total strain amplitudes range from 0. 3 to 0. 7% According to the test results,the S N curves of pre strain hardening material are obtained,and then compared with the design curves in ASME BPVC VIII 2 code. It can be found that the designed fatigue life can be improved when the equipments are evaluated with the pre strain hardening fatigue life design curve.", "corpus_id": 138626008, "venue": "", "year": 2014, "author_names": [ "Jiangming Gong" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "115881696", "title": "Improvement of AISI 304 austenitic stainless steel low cycle fatigue life by initial and intermittent deep rolling", "abstract": "In the current study, deep rolling treatment was applied to enhance low cycle fatigue behavior of the AISI 304 stainless steel. Desirability function approach was applied to determine the process parameters offering the optimal surface roughness and hardness as these surface characteristics are supposed to control the fatigue cracks initiation and growth. The enhancement of the low cycle fatigue behavior was investigated using strain controlled fatigue tests applied to machined and deep rolled specimens associated to experimental evaluation of surface topography, microhardness, and residual stress. Findings of this work show that an increase of the fatigue lifetime of the AISI 304 components can be achieved by the application of deep rolling to machined surfaces. Moreover, the application of an intermittent deep rolling leads to a significant extension of service life especially when it is performed at low strain amplitudes. The improvement of the residual lifetime of deep rolled components is explained based on evaluations of the surface texture changes, residual stresses, cold work hardening, and strain induced martensite transformation.", "corpus_id": 115881696, "venue": "", "year": 2019, "author_names": [ "Naoufel Ben Moussa", "Khouloud Gharbi", "Iheb Chaieb", "Nabil Ben Fredj" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "139843610", "title": "Effect of torsional pre strain on low cycle fatigue performance of 304 stainless steel", "abstract": "Abstract Uniaxial tensile tests and low cycle fatigue tests were performed on 304 stainless steel treated with different torsional pre strains. The relationship between torsional pre strain and mechanical properties is established. Furthermore, the changes in the amount of martensite phase transitions are measured during low cycle fatigue tests and after specimen fracture are observed. This is mainly because martensitic transformation is a frequent phenomenon during plastic deformation, which is closely related to the mechanical properties. In this study, it is found that torsional pre strain increases yield strength and reduces elongation. The ductility of 304 stainless steel decreases with the increase of torsional pre strain, while its fatigue life does not. As the amplitude of torsional pre strain increases, the fatigue life of the material changes in s type. In particular, the fatigue life increases when the torsional pre strain is between 5% and 8% From the analysis of the microcosmic distribution of the martensite, it is found that the fatigue life is affected by the combined action of martensite transformation and ductility. The test results suggest that it should skip the relatively dangerous small strain area when improving mechanical properties of 304 stainless steel by way of changing shear pre strain.", "corpus_id": 139843610, "venue": "Materials Science and Engineering: A", "year": 2019, "author_names": [ "Sheng-wei Ji", "Caiming Liu", "Yajing Li", "Shouwen Shi", "Xu Chen" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "115525711", "title": "Young's modulus and fatigue investigation of aluminum nitride films deposited on 304 stainless steel foils using micro fabricated cantilevers", "abstract": "Abstract Aluminum nitride based (AlN based) piezoelectric vibration energy harvesters (PVEHs) have been received much attention in the power generation for the device in microelectromechanical systems (MEMS) During the long time vibration, PVEHs are suffering cyclically dynamic stress. This may result in the defect of the materials, and finally cause the failure of the device. To achieve a reliable design of the device that can work for a long time without failure, the investigation on the mechanical properties of Young's modulus and fatigue were conducted for AlN films deposited on 304 stainless steel (SUS 304) foils in this study. Two kinds of materials were tested, SUS 304 foils with a thickness of 50 mm (SUS 304 (50 mm) and a composite material of AlN films deposited on both sides of SUS 304 foils (AlN (1 mm) SUS 304 (50 mm) AlN (1 mm) structure) The samples were micro fabricated to cantilevers. Young's modulus was measured by the micro cantilever resonance method. The resonant bending fatigue testing method was used to investigate the fatigue properties of the materials. The displacement amplitude of the samples was recorded during the tests. A new criterion by using the change of amplitude versus number of cycles was proposed to define the fatigue life. As results, the Young's modulus was 184.9 and 342.9 MPa, for SUS 304 foil and AlN film, respectively. Stress cycle (S N) curves were plotted by using the proposed criterion successfully. The fatigue strength of SUS 304 foils and the material with AlN/ SUS 304/ AlN structure was estimated to be 294 and 327 MPa, respectively. Fatigue failures of stable crack, intrusions and extrusions, and slip bands, appeared on the surface of SUS 304 foils after the long time vibration. No fatigue failure or surface defect was observed on AlN films.", "corpus_id": 115525711, "venue": "", "year": 2019, "author_names": [ "Qiu Zheng", "Le Van Minh", "Hiroki Kuwano" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "139451837", "title": "Corrosion fatigue behavior of 304 stainless steel notched specimen in high temperature pressurized water", "abstract": "Abstract Fatigue behavior of 304 stainless steel notched specimen was investigated in room temperature (RT) air, 280 degC and 325 degC pressurized water at varying average strain rates. Fatigue life of the notched specimen in RT air is longer than that of the smooth specimen due to the stress gradient on the section of notch root. Fatigue life of the notched specimen in 325 degC water is longer than that in 280 degC water due to the combination of different corrosion rates and dynamic strain aging at different water temperatures.", "corpus_id": 139451837, "venue": "Materials Science and Engineering: A", "year": 2019, "author_names": [ "Jiapeng Liao", "Jibo Tan", "Xinqiang Wu", "Dong Ning", "Guo-hong Xue", "Weida Yao" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "86557118", "title": "Statistical Modeling of Wire and Arc Additive Manufactured Stainless Steel 304: Microstructure and Fatigue", "abstract": "Single bead walls were fabricated using stainless steel (SS) 304 wire and arc additive manufacturing (WAAM) The primary objective is to statistically characterize critical material properties of the build to make comparisons with wrought material. The quality of the build is demonstrated by the size distribution and spatial location of porosity in the build. Deviations in the thermal history as a function of the location in the build, especially as the vertical height of the build increases, cause differences in material properties which are statistically investigated. The material behavior and statistical variances along the horizontal direction of the build compared to perpendicular differences in location is significant. Optical microscopy and electron back scatter diffraction are used to estimate statistically key geometric properties of grains. A preliminary investigation for fatigue using the strain life approach has been conducted to evaluate the effect of the build process and the location dependence on life. A generalized Weibull distribution is proposed to model the statistical variability of fatigue life data.", "corpus_id": 86557118, "venue": "International Journal of Reliability, Quality and Safety Engineering", "year": 2019, "author_names": [ "Jerard V Gordon", "D Gary Harlow" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "164606450", "title": "Evaluation of fatigue life and fatigue limit of circumferentially notched Type 304 stainless steel in air and hydrogen gas based on crack growth property and cyclic stress strain response", "abstract": "Abstract Fatigue tests were performed using circumferentially notched, round bar specimens with a stress concentration factor, Kt, of 6.6 for Type 304, metastable, austenitic stainless steel. The tests were carried out in ambient air and in 0.7 MPa hydrogen gas at room temperature. In a relatively higher stress amplitude regime (i.e. the amplitude resulting in Nf 105) it appeared that fatigue life did not differ between air and hydrogen gas. It was also confirmed that the fatigue limit appeared not have been degraded in the hydrogen environment though there was a slight difference between the data obtained in two environments. The fatigue life curve and fatigue limit were predicted by assuming that the notch was equivalent to a circumferential crack. Consequently, there was a significant disparity between the prediction and the experimental results. As a result of microscopic observations of the fracture process in combination with elastic plastic finite element analyses, these discrepancies were attributed to (i) complex cyclic plastic deformation behavior under large and small scale yielding conditions within the vicinity of the notch root, (ii) the retardation of crack initiation in the finite life regime, and (iii) the absence of non propagating cracks at the fatigue limit, all of which are typical characteristics of metastable austenitic stainless steel.", "corpus_id": 164606450, "venue": "Engineering Fracture Mechanics", "year": 2019, "author_names": [ "Naoaki Nagaishi", "Michio Yoshikawa", "Saburo Okazaki", "Junichiro Yamabe", "Fusahito Yoshida", "Hisao Matsunaga" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "199461783", "title": "Fatigue and cyclic deformation behavior of non and boronized austenitic stainless steel AISI 304 at room and elevated temperatures", "abstract": "A thermochemical surface treatment, the powder packed boronizing process was optimized and then performed on an austenitic stainless steel, AISI 304. Afterwards, boronized specimens were cyclically loaded at ambient and elevated temperatures (350, 550 and 650 degC) Then the results were compared with the behavior in non boronized condition. Nonstatistically evaluated S N curves and cyclic deformation curves were investigated and are discussed. It was found that the boronizing process only improved the high cycle fatigue (HCF) properties of the austenitic stainless steel AISI 304 at room temperature. An endurance limit of about 340 MPa was observed in the boronized condition, whereas a fatigue strength of about 300 MPa was detected for the non boronized condition. However, at elevated temperatures boronizing was not associated with enhanced fatigue performance of this steel.", "corpus_id": 199461783, "venue": "", "year": 2019, "author_names": [ "Tharaphat Wiriyasaroj", "Patiphan Juijerm", "Berthold Scholtes", "Thomas Niendorf" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "103634617", "title": "Effects of a' martensite and deformation twin on hydrogen assisted fatigue crack growth in cold/warm rolled type 304 stainless steel", "abstract": "Abstract The effects of a' martensite and deformation twin on hydrogen assisted fatigue crack growth (FCG) were investigated in cold/warm rolled type 304 stainless steel in 5 MPa hydrogen and argon gas atmosphere. The rate of FCG is reduced in argon gas, while greatly enhanced in hydrogen gas after cold rolling. The FCG rates of warm rolled specimens, no matter tested in hydrogen gas or argon gas, are reduced comparing with as received specimens. After cold rolling, a' martensite formed around the grain boundary promotes hydrogen assisted crack initiation and propagation. The deformation twin plays an important role during FCG besides a' martensite after warm rolling, and hydrogen assisted cracking along the twin boundary and slip band can enhance the FCG rate during cycle loading.", "corpus_id": 103634617, "venue": "", "year": 2018, "author_names": [ "Xingyang Chen", "Chengshuang Zhou", "Jinyang Zheng", "L Zhang" ], "n_citations": 17, "n_key_citations": 1, "score": 0 }, { "doc_id": "199839936", "title": "Observations of fatigue crack behaviour in proton irradiated 304 stainless steel", "abstract": "", "corpus_id": 199839936, "venue": "Fatigue Fracture of Engineering Materials Structures", "year": 2019, "author_names": [ "Rory P Spencer", "Eann A Patterson" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "36652946", "title": "Differentiation of Bacterial and Viral Pneumonia in Children by Hematological Investigations", "abstract": "Objective: To differentiate bacterial and viral community acquired pneumonias using WBC count (TC) differential count (DC),erythrocyte sedimentation rate(ESR) Design: Descriptive Study Setting: Semi Urban tertiary care hospital Methods: 100 cases of children aged between 1month to 12 years who were admitted to paediatric wards with tachypnoea as per WHO criteria and chest in drawing in Rajah Muthiah Medical college, Chidambaram were included in the study. Detailed history, physical examinations were recorded in a proforma. Investigations included WBC count, DC, ESR, Chest X ray. Children who had radiologically confirmed pneumonia (86 cases) were divided in to bacterial and viral pneumonia based on their radiological findings. These results were correlated with laboratory findings and results were given. Results: In the present study, radiological findings were present in 86% of cases. Bacterial pneumonia was detected in 73% viral pneumonia in 13% Among bacterial pneumonia, bronchopneumonia was seen in 34% cases, consolidation was seen in 26% alveolar infiltrate in 6% and complications of pneumonia in 7% cases. In the present study, among bacterial pneumonias defined radiologically,63% had elevated WBC count ,79% had neutrophilia, 76.7% had elevated ESR. There was no correlation of laboratory findings with bacterial and viral pneumonia defined radiologically (low sensitivity and specificity) Conclusion: Routine hematological investigations like WBC count, DC, ESR aid very little in differentiating bacterial and viral pneumonias. Chest X ray is valuable aid in the diagnosis of pneumonia in children. Follow up chest roentgenogram is vital for evaluating the response to treatment in pneumonia.", "corpus_id": 36652946, "venue": "", "year": 2017, "author_names": [ "S Prabakar" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "202705198", "title": "Human Rhinovirus is the Most Commonly Identified Respiratory Virus in Children 1 Hospitalized with Pneumonia from Mozambique 2 3", "abstract": "26 OBJECTIVES: To describe the prevalence of human rhinovirus (RV) species in children 27 hospitalized with pneumonia in Manhica Mozambique and the associations between RV 28 species and demographic, clinical, and laboratory features. 29 METHODS: Nasopharyngeal aspirates were collected from children 0 10 years of age 30 (n=277) presenting to the Manhica District Hospital in Mozambique with clinical pneumonia. 31 Blood samples were collected for HIV and malaria testing, blood culture and full blood 32 counts, and a chest X ray was performed. A panel of common respiratory viruses was 33 investigated using two independent multiplex RT PCR assays with primers specific for each 34 virus and viral type. RV species and genotypes were identified by semi nested PCR assays, 35 sequencing and phylogenetic tree analyses. 36 RESULTS: At least one respiratory virus was identified in 206 (74.4% children hospitalized 37 with clinical pneumonia. RV was the most common virus identified in both HIV infected 38 (17/38, 44.7% and HIV uninfected (74/237, 31.2% p=0.100) children. RV A was the most 39 common RV species identified (47/275, 17.0% followed by RV C (35/275, 12.6% and RV40 B (8/275, 2.9% Clinical presentation of the different RV species was similar and 41 overlapping, with no particular species being associated with specific clinical features. 42 CONCLUSIONS: RV A and RV C were the most common respiratory viruses identified in 43 children hospitalised with clinical pneumonia in Manhica. Clinical presentation of RV A and 44 RV C was similar and overlapping. 45 46 Introduction 47 Acute lower respiratory infections (ALRI) such as pneumonia account for an estimated 1.3 48 million deaths each year in children under 5 years of age, 43% of which occur in sub Saharan 49 Africa.(1) Management and prevention efforts against pneumonia in developing countries 50 have traditionally focused on bacterial pathogens. The introduction of effective conjugate 51 vaccines globally has led to decreasing trends in bacterial pneumonia and a subsequent 52 increased interest in the role of virus associated ALRI. Recent advances in molecular 53 diagnostics such as PCR have also led to the discovery of new viruses and viral species, 54 highlighting the prominence of viruses in respiratory disease. Respiratory viruses are widely 55 acknowledged to be the most common cause of both upper and lower respiratory tract 56 infections in the developed world.(2) However, advanced diagnostics are largely limited in 57 the developing world and studies including a comprehensive range of viral pathogens are 58 scarce in many African countries. The majority of respiratory viral aetiological studies in 59 Africa have relied on traditional cell culture and serological methods with PCR data only 60 becoming available in recent years. Data beyond respiratory syncytial virus (RSV) are still 61 scarce and aetiological studies of ALRI in African children published as recently as 2013 did 62 not screen for common respiratory viruses such as RV, coronavirus and bocavirus(3) or were 63 unable to distinguish RV from enterovirus.(4) 64 65 RV is the most common cause of childhood respiratory infections worldwide and responsible 66 for almost two thirds of cases of the common cold(5) as well as lower respiratory tract 67 infections, including pneumonia and bronchiolitis. The identification of RV C as the third RV 68 species, first reported in 2006, led to several investigations on the prevalence of RV species, 69 conducted predominantly in developed countries. The majority of these studies on children 70 hospitalized with ALRI or asthma found that RV C was the most prevalent RV species and 71 was often associated with more severe illness.(6 13) While there have been previous reports 72 on the overall prevalence of RV in children with acute respiratory infections or pneumonia in 73 Mozambique, none have specifically investigated RV species.(14, 15) In the two 74 Mozambican studies of respiratory viral prevalence, RV was the most commonly identified 75 virus, identified in 26% and 24% of children with acute respiratory infections and 76 pneumonia, respectively. Only three other studies have investigated the prevalence of RV 77 species in African children.(16 18) While these studies confirmed the importance of RV in 78 African children, they were inconclusive with respect to the role of RV species in ALRI in 79 African children. 80 81 Much of our understanding on the viral aetiology of childhood pneumonia in Africa is based 82 on studies conducted prior to the HIV epidemic that has engulfed many African countries. 83 Evidence suggests that HIV infection is now driving both the frequency and outcome of 84 pneumonia and pneumonia is the leading cause of morbidity and mortality in HIV infected 85 children.(19) A recent study from South Africa reported that a respiratory virus was identified 86 in the majority of both HIV infected and HIV uninfected children, with RV being the most 87 frequently identified virus.(20) No studies have investigated RV species among HIV infected 88 children. 89 90 Given the limitations of routine microbiology facilities in the majority of African countries, 91 most clinicians rely on examination of clinical features to determine the probable aetiology of 92 ALRI in children. Clinical features, which are often indistinguishable for different respiratory 93 viruses, (21, 22) have not been comprehensively investigated in childhood ALRI in Africa. 94 A few studies from Africa and the Middle East found that RV C was associated with 95 wheezing.(12, 18) The clinical relevance of viral co infections is also not well established 96 and there is conflicting evidence regarding the association between multiple viral 97 identifications and disease severity. Some studies have reported an association between viral 98 co infections and disease severity (23 29) while others have reported no differences in 99 disease severity between single and multiple viral infections.(30, 31) 100 101 The aim of this study was to describe the prevalence of respiratory viruses, in particular RV 102 and RV species, and the association of RV species with HIV status, clinical features and 103 seasonality in children with clinical pneumonia from Manhica, Mozambique. 104 105 Materials and Methods 106 Study Setting and Design 107 This study was conducted by the Manhica Health Research Centre (Centro de Investigacao 108 em Saude da Manhica, CISM) at the Manhica District Hospital (MDH) a public hospital in 109 Southern Mozambique. The Manhica district in Southern Mozambique has an estimated 110 population of 143,000. The area has a subtropical climate with two distinct seasons; a warm 111 and rainy season between November and April and cool and dry season during the rest of the 112 year. The HIV prevalence among newborns has been estimated between 2.9 and 8%(15) A 113 demographic surveillance system (DSS) including 500km 2 surrounding the area, developed 114 by CISM, has been running since 1996, and covers a population of around 92,000 inhabitants. 115 Each individual living within the DSS area is issued a unique permanent identification 116 number and information on vital events are collected during routine household visits.(32) 117 Further characteristics of the DSS and study area are described elsewhere.(32) 118 119 Children were recruited as part of a larger project aiming to investigate the underlying 120 aetiology of children with respiratory symptoms. Between September 2010 and April 2013, 121 277 children 0 10 years of age presenting to the Manhica District Hospital with fever (or a 122 history of fever >37.5oC axillary temperature) in the preceding 24 hours) and clinical 123 pneumonia, according to the WHO definition (increased respiratory rate and cough and/or 124 difficulty in breathing) and sick enough to warrant hospital admission, were recruited into 125 the study. Increased respiratory rate was defined according to Integrated Management of 126 Childhood (IMCI) guidelines: 60 breaths per minute in children 2 months, 50 in 2 12 127 months, 40 in 1 5 years, and 30 in 5 10 years) Exclusion criteria included prior 128 enrolment in this study, use of antibiotics or antimalarial drugs during the preceding two 129 weeks, history of cough for more than two weeks duration, active tuberculosis or history of 130 direct contact with a documented tuberculosis case, and children with an oxyhaemoglobin 131 saturation of less than 85% on examination on admission, as a proxy for possible 132 Pneumocystis jirovecii infection. 133 134 Clinical and questionnaire data and samples were obtained from the enrolled cases on the day 135 of recruitment. A NPA was collected from each child by a trained study health assistant. HIV 136 testing was routinely conducted, and all patients underwent chest X ray and extensive clinical 137 and laboratorial screening, including malaria testing, blood culture and full blood counts. 138 139 Written informed consent was obtained from parents or guardians prior to participation and 140 the study was approved by the University of Western Australia Human Research Ethics 141 Committee, the Ethics Committee of the Hospital Clinic (Barcelona, Spain) and the Comite 142 Nacional de Bioetica para a Saude (Maputo, Mozambique) prior to commencement. 143 144 Laboratory methods 145 Virus detection 146 NPAs were stored at 80oC in Manhica, Mozambique until shipped to the study laboratories, 147 on dry ice, for processing. Identification of common respiratory viruses (adenovirus, RSV, 148 bocavirus, coronavirus, parainfluenza viruses, influenza viruses and metapneumovirus) was 149 carried out using two independent multiplex RT PCR assays with primers specific for each 150 virus and viral type. RV identification and genotyping was based on a published molecular 151 method to determine RV genotypes and to differentiate closely related enteroviruses from 152 RV.", "corpus_id": 202705198, "venue": "", "year": 2016, "author_names": [ "Alicia A Annamalay", "Miguel A Lanaspa", "S-K Khoo", "Lola Madrid", "", "Guicheng Zhang", "Ingrid A Laing", "James E Gern", "Jack Goldblatt", "Deborah Lehmann", "Peter N Le Souef", "Quique Bassat" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "220250774", "title": "Viral Pneumonia Screening on Chest X ray Images Using Confidence Aware Anomaly Detection", "abstract": "Cluster of viral pneumonia occurrences during a short period of time may be a harbinger of an outbreak or pandemic, like SARS, MERS, and recent COVID 19. Rapid and accurate detection of viral pneumonia using chest X ray can be significantly useful in large scale screening and epidemic prevention, particularly when other chest imaging modalities are less available. Viral pneumonia often have diverse causes and exhibit notably different visual appearances on X ray images. The evolution of viruses and the emergence of novel mutated viruses further result in substantial dataset shift, which greatly limits the performance of classification approaches. In this paper, we formulate the task of differentiating viral pneumonia from non viral pneumonia and healthy controls into an one class classification based anomaly detection problem, and thus propose the confidence aware anomaly detection (CAAD) model, which consists of a shared feature extractor, an anomaly detection module, and a confidence prediction module. If the anomaly score produced by the anomaly detection module is large enough or the confidence score estimated by the confidence prediction module is small enough, we accept the input as an anomaly case (i.e. viral pneumonia) The major advantage of our approach over binary classification is that we avoid modeling individual viral pneumonia classes explicitly and treat all known viral pneumonia cases as anomalies to reinforce the one class model. The proposed model outperforms binary classification models on the clinical X VIRAL dataset that contains 5,977 viral pneumonia (no COVID 19) cases, 18,619 non viral pneumonia cases, and 18,774 healthy controls.", "corpus_id": 220250774, "venue": "", "year": 2020, "author_names": [ "Jianpeng Zhang", "Yutong Xie", "Zhibin Liao", "Guansong Pang", "Johan W Verjans", "Wenxing Li", "Zongji Sun", "Jian He", "Ying Li", "Chunhua Shen", "Yong Xia" ], "n_citations": 80, "n_key_citations": 4, "score": 0 }, { "doc_id": "219947672", "title": "CovXNet: A multi dilation convolutional neural network for automatic COVID 19 and other pneumonia detection from chest X ray images with transferable multi receptive feature optimization", "abstract": "Abstract With the recent outbreak of COVID 19, fast diagnostic testing has become one of the major challenges due to the critical shortage of test kit. Pneumonia, a major effect of COVID 19, needs to be urgently diagnosed along with its underlying reasons. In this paper, deep learning aided automated COVID 19 and other pneumonia detection schemes are proposed utilizing a small amount of COVID 19 chest X rays. A deep convolutional neural network (CNN) based architecture, named as CovXNet, is proposed that utilizes depthwise convolution with varying dilation rates for efficiently extracting diversified features from chest X rays. Since the chest X ray images corresponding to COVID 19 caused pneumonia and other traditional pneumonias have significant similarities, at first, a large number of chest X rays corresponding to normal and (viral/bacterial) pneumonia patients are used to train the proposed CovXNet. Learning of this initial training phase is transferred with some additional fine tuning layers that are further trained with a smaller number of chest X rays corresponding to COVID 19 and other pneumonia patients. In the proposed method, different forms of CovXNets are designed and trained with X ray images of various resolutions and for further optimization of their predictions, a stacking algorithm is employed. Finally, a gradient based discriminative localization is integrated to distinguish the abnormal regions of X ray images referring to different types of pneumonia. Extensive experimentations using two different datasets provide very satisfactory detection performance with accuracy of 97.4% for COVID/Normal, 96.9% for COVID/Viral pneumonia, 94.7% for COVID/Bacterial pneumonia, and 90.2% for multiclass COVID/normal/Viral/Bacterial pneumonias. Hence, the proposed schemes can serve as an efficient tool in the current state of COVID 19 pandemic. All the architectures are made publicly available at: https:/github.com/Perceptron21/CovXNet.", "corpus_id": 219947672, "venue": "Computers in Biology and Medicine", "year": 2020, "author_names": [ "Tanvir Mahmud", "Md Awsafur Rahman", "Shaikh Anowarul Fattah" ], "n_citations": 114, "n_key_citations": 11, "score": 0 }, { "doc_id": "229151989", "title": "WITHDRAWN: Deep Learning Classification For Diagnosis COVID 19 Between Bacterial Pneumonia and Viral Pneumonia in Chest X Ray Images", "abstract": "", "corpus_id": 229151989, "venue": "", "year": 2020, "author_names": [ "Ahmed A Farid", "Gamal Eldin I Selim", "Hatem Khater" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "215754140", "title": "Transfer Learning with Deep Convolutional Neural Network (CNN) for Pneumonia Detection using Chest X ray", "abstract": "Pneumonia is a life threatening disease, which occurs in the lungs caused by either bacterial or viral infection. It can be life endangering if not acted upon at the right time and thus the early diagnosis of pneumonia is vital. The paper aims to automatically detect bacterial and viral pneumonia using digital x ray images. It provides a detailed report on advances in accurate detection of pneumonia and then presents the methodology adopted by the authors. Four different pre trained deep Convolutional Neural Network (CNN) AlexNet, ResNet18, DenseNet201, and SqueezeNet were used for transfer learning. A total of 5247 chest X ray images consisting of bacterial, viral, and normal chest x rays images were preprocessed and trained for the transfer learning based classification task. In this study, the authors have reported three schemes of classifications: normal vs. pneumonia, bacterial vs. viral pneumonia, and normal, bacterial, and viral pneumonia. The classification accuracy of normal and pneumonia images, bacterial and viral pneumonia images, and normal, bacterial, and viral pneumonia were 98% 95% and 93.3% respectively. This is the highest accuracy, in any scheme, of the accuracies reported in the literature. Therefore, the proposed study can be useful in more quickly diagnosing pneumonia by the radiologist and can help in the fast airport screening of pneumonia patients.", "corpus_id": 215754140, "venue": "Applied Sciences", "year": 2020, "author_names": [ "Tawsifur Rahman", "Muhammad Enamul Hoque Chowdhury", "Amith Khandakar", "Khandaker Reajul Islam", "Khandaker F Islam", "Zaid Bin Mahbub", "Muhammad Abdul Kadir", "Saad Bin Abul Kashem" ], "n_citations": 65, "n_key_citations": 2, "score": 0 }, { "doc_id": "237473505", "title": "Screening of Viral Pneumonia and COVID 19 in Chest X ray using Classical Machine Learning", "abstract": "Governments, civil society, health professionals, and scientists have been facing a relentless fight against the pandemic of the COVID 19 disease; however, there are already about 150 million people infected worldwide and more than 3 million lives claimed, and numbers keep rising. One of the ways to combat this disease is the effective screening of infected patients. However, COVID 19 provides a similar pattern with diseases, such as pneumonia, and can misguide even very well trained physicians. In this sense, a chest X ray (CXR) is an effective alternative due to its low cost, accessibility, and quick response. Thus, inspired by research on the use of CXR for the diagnosis of COVID 19 pneumonia, we investigate classical machine learning methods to assist in this task. The main goal of this work is to present a robust, lightweight, and fast technique for the automatic detection of COVID 19 from CXR images. We extracted radiomic features from CXR images and trained classical machine learning models for two different classification schemes: i) COVID 19 pneumonia vs. Normal ii) COVID 19 vs. Normal vs. Viral pneumonia. Several evaluation metrics were used and comparison with many studies is presented. Our experimental results are equivalent to the state of the art for both classification schemes. The solution's high performance makes it a viable option as a computer aided diagnostic tool, which can represent a significant gain in the speed and accuracy of the COVID 19 diagnosis.", "corpus_id": 237473505, "venue": "2021 IEEE 45th Annual Computers, Software, and Applications Conference (COMPSAC)", "year": 2021, "author_names": [ "Gabriel da Silva Vieira", "Fabrizzio Soares" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "231979708", "title": "Hybrid ensemble model for differential diagnosis between COVID 19 and common viral pneumonia by chest X ray radiograph", "abstract": "Background Chest X ray radiography (CXR) has been widely considered as an accessible, feasible, and convenient method to evaluate suspected patients' lung involvement during the COVID 19 pandemic. However, with the escalating number of suspected cases, traditional diagnosis via CXR fails to deliver results within a short period of time. Therefore, it is crucial to employ artificial intelligence (AI) to enhance CXRs for obtaining quick and accurate diagnoses. Previous studies have reported the feasibility of utilizing deep learning methods to screen for COVID 19 using CXR and CT results. However, these models only use a single deep learning network for chest radiograph detection; the accuracy of this approach required further improvement. Methods In this study, we propose a three step hybrid ensemble model, including a feature extractor, a feature selector, and a classifier. First, a pre trained AlexNet with an improved structure extracts the original image features. Then, the ReliefF algorithm is adopted to sort the extracted features, and a trial and error approach is used to select the n most important features to reduce the feature dimension. Finally, an SVM classifier provides classification results based on the n selected features. Results Compared to five existing models (InceptionV3: 97.916 0.408% SqueezeNet: 97.189 0.526% VGG19: 96.520 1.220% ResNet50: 97.476 0.513% ResNet101: 98.241 0.209% the proposed model demonstrated the best performance in terms of overall accuracy rate (98.642 0.398% Additionally, compared to the existing models, the proposed model demonstrates a considerable improvement in classification time efficiency (SqueezeNet: 6.602 0.001s; InceptionV3: 12.376 0.002s; ResNet50: 10.952 0.001s; ResNet101: 18.040 0.002s; VGG19: 16.632 0.002s; proposed model: 5.917 0.001s) Conclusion The model proposed in this article is practical and effective, and can provide high precision COVID 19 CXR detection. We demonstrated its suitability to aid medical professionals in distinguishing normal CXRs, viral pneumonia CXRs and COVID 19 CXRs efficiently on small sample sizes.", "corpus_id": 231979708, "venue": "Computers in Biology and Medicine", "year": 2021, "author_names": [ "Weiqiu Jin", "Shuqin Dong", "Changzi Dong", "Xiaodan Ye" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "218538891", "title": "Training deep learning algorithms with weakly labeled pneumonia chest X ray data for COVID 19 detection", "abstract": "The novel Severe Acute Respiratory Syndrome Coronavirus 2 (SARS CoV 2) has caused a pandemic resulting in over 2.7 million infected individuals and over 190,000 deaths and growing. Respiratory disorders in COVID 19 caused by the virus commonly present as viral pneumonia like opacities in chest X ray images which are used as an adjunct to the reverse transcription polymerase chain reaction test for confirmation and evaluating disease progression. The surge places high demand on medical services including radiology expertise. However, there is a dearth of sufficient training data for developing image based automated decision support tools to alleviate radiological burden. We address this insufficiency by expanding training data distribution through use of weakly labeled images pooled from publicly available CXR collections showing pneumonia related opacities. We use the images in a stage wise, strategic approach and train convolutional neural network based algorithms to detect COVID 19 infections in CXRs. It is observed that weakly labeled data augmentation improves performance with the baseline test data compared to non augmented training by expanding the learned feature space to encompass variability in the unseen test distribution to enhance inter class discrimination, reduce intra class similarity and generalization error. Augmentation with COVID 19 CXRs from individual collections significantly improves performance compared to baseline non augmented training and weakly labeled augmentation toward detecting COVID 19 like viral pneumonia in the publicly available COVID 19 CXR collections. This underscores the fact that COVID 19 CXRs have a distinct pattern and hence distribution, unlike non COVID 19 viral pneumonia and other infectious agents.", "corpus_id": 218538891, "venue": "medRxiv", "year": 2020, "author_names": [ "Sivaramakrishnan Rajaraman", "S Antani" ], "n_citations": 13, "n_key_citations": 2, "score": 0 }, { "doc_id": "227241665", "title": "Which role for chest x ray score in predicting the outcome in COVID 19 pneumonia?", "abstract": "We aim to demonstrate that a chest X ray (CXR) scoring system for COVID 19 patients correlates with patient outcome and has a prognostic value. This retrospective study included CXRs of COVID 19 patients that reported the Brixia score, a semi quantitative scoring system rating lung involvement from 0 to 18. The highest (H) and lowest (L) values were registered along with scores on admission (A) and end of hospitalization (E) The Brixia score was correlated with the outcome (death or discharge) A total of 953 patients met inclusion criteria. In total, 677/953 were discharged and 276/953 died during hospitalization. A total of 524/953 had one CXR and 429/953 had more than one CXR. H score was significantly higher in deceased (median, 12; IQR 9 14) compared to that in discharged patients (median, 8; IQR 5 11) (p 0.0001) In 429/953 patients with multiple CXR, A score, L score, and E score were higher in deceased than in discharged patients (A score 9 vs 8; p 0.039; L score 7 vs 5; p 0.0003; E score 12 vs 7; p 0.0001) In the entire cohort, logistic regression showed a significant predictive value for age (p 0.0001, OR 1.13) H score (p 0.0001, OR 1.25) and gender (p 0.01, male OR 1.67) AUC was 0.863. In patients with 2 CXR, A L and E scores correlated significantly with the outcome. Cox proportional hazards regression indicated age (p 0.0001, HR 4.17) H score 9, HR 0.36, p 0.0012) and worsening of H score vs A score 3 (HR 1.57, p 0.0227) as associated with worse outcome. The Brixia score correlates strongly with disease severity and outcome; it may support the clinical decision making, particularly in patients with moderate to severe signs and symptoms. The Brixia score should be incorporated in a prognostic model, which would be desirable, particularly in resource constraint scenarios. To demonstrate the importance of the Brixia score in assessing and monitoring COVID 19 lung involvement. The Brixia score strongly correlates with patient outcome and can be easily implemented in the routine reporting of CXR.", "corpus_id": 227241665, "venue": "European Radiology", "year": 2020, "author_names": [ "Roberto Maroldi", "Paolo Rondi", "Giorgio Maria Agazzi", "Marco Ravanelli", "Andrea Borghesi", "Davide Farina" ], "n_citations": 10, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "226325737", "title": "WORKING PROCESS OF SB 2 DRYER (DOZA AGRO LLC) IN THE COMPOSITION OF FUEL PELLETS PRODUCTION LINES", "abstract": "Waste free wood processing technologies are conditioned by the economic and environmental aspects of human activity. One of the stages of such technologies is processing of wood waste into fuel pellets, for the production of which appropriate lines are used. They include a large number of different machines. The article presents the results of studies of the working process of SB 2 dryer produced by Doza Agro LLC, which is a part of these lines. The paper presents its scheme and describes the principle of operation, evaluates the efficiency of the dryer working process depending on the feedstock parameters. Work process of the drying drum was carried out in the conditions of IP Kabanov, IP Bratchikov, Penza Pellet LLC, Togliatinsky Pellet Plant LLC, Promlesilim LLC, Maslyaninsky LLC, Ekolesprom LLC, Bryansk Broiler LLC, Tandem VP LLC. The influence of feedstock moisture content, temperature of the feedstock and the particle size has been determined. The particle size was estimated by their surface area. The efficiency of the dryer was evaluated by its productivity, expressed as a percentage of the maximum possible one and obtained under optimal conditions. After processing statistical information, a second order regression model has been obtained, which characterizes the drying process of crushed material the SB 2 dryer. It was revealed that feedstock moisture content has the greatest influence on the working process of SB 2 dryer. The drying process of crushed wood material differs from the drying process of chips. Namely, the temperature of the dryer has the smallest effect on the performance when drying the crushed material. When drying the shavings, their size has the smallest effect.", "corpus_id": 226325737, "venue": "", "year": 2020, "author_names": [ "Aleksandr Sergeev" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "213142256", "title": "Research on the quality of diesel fuel provided by LLC Ferronordic Trading House", "abstract": "Ferronordic is the official dealer for Volvo Construction Equipment, Dressta, Mecalac and Rottne. In addition to sales and aftersales support for Volvo Construction Equipment, the company is a dealer for servicing Volvo and Renault Trucks, as well as a dealer for Volvo Penta for servicing industrial and marine engines in some regions of Russia. The company collaborates with other well known brands and several suppliers of attachments. The Swedish concern Volvo Group supplies to the Russian market trucks equipped with diesel engines with Common Rail injection system, as well as with pump nozzles. Diesel mechanical and electronic pump nozzles perform timely and metered injection of the working mixture into the combustion chambers of the cylinders of a diesel engine. The mechanical nozzles are driven by a high pressure fuel pump, while the electronic ones are controlled by the Common Rail electronic injection system and are constantly under intense mechanical stress. Poor quality diesel fuel leads to: loss of power, lack of traction and instability of the engine; overexpenditure and fuel leakage from sprayers; change in spray angle and time; change in the amount of injected mixture; the appearance of knocks and noises, black and bluish smoke during exhaust. The results of research work on the study of the quality of diesel fuel of the company LLC Ferronordic Trading House are presented. The physicochemical properties of diesel fuel were studied experimentally, such as: density, fractional composition, mass fraction of sulfur, mass fraction of water, flash point, limiting filterability temperature and cloud point.", "corpus_id": 213142256, "venue": "", "year": 2019, "author_names": [ "E L Iovleva" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "155109281", "title": "A Highly Efficient PV and Fuel Cell Powered Full Bridge Bidirectional LLC Resonant Converter", "abstract": "With development in the field of research, there is a need of improvement in present equipments. This paper is about improving the efficiency of DC DC converter that will be operated with renewable sources like PV panel, fuel cell, etc. In the proposed model, a full bridge LLC converter has been developed for bidirectional operation. A PV array is connected to LLC converter which may be inverted using an inverter in Simulink. The low efficiency of PV array, Fuel Cell due to their non linear characteristics have been improved by using MPPT controller which feeds the reference voltage in the converter's voltage regulator. The regulated DC voltage from LLC converter can be used with an inverter to provide a portable AC voltage source for electrical equipment.", "corpus_id": 155109281, "venue": "2018 International Electrical Engineering Congress (iEECON)", "year": 2018, "author_names": [ "Avinash Kumar", "Ranjeet Kumar Singh", "B K Naick" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "54460376", "title": "Analysis. Design and Implementation of Fuel Cell LLC Resonant Converter Used in Electrical Vehicle", "abstract": "This paper presents actually analysis and design of a full bridge LLC resonant converter appropriate to a fuel cell used in electrical vehicle. In fact, the LLC converter has various required aspects such as high efficiency, low electromagnetic interference (EMI) and high power density. It provides additionally a detailed practical design aspect of a full bridge LLC resonant converter. Therefore, the resonant converter is made by a bridge on the primary side and a bridge rectifier on the secondary side. It includes the determination of the selection of components such as resonant inductor, resonant capacitor and magnetization inductor. Furthermore, the performance parameters such as voltage gain and output voltage ripple are determined. An experimental converter prototype has been simultaneously designed, built up, and tested in the laboratory. Finally, a 30V input and 180V output 300W prototype is built to demonstrate of the proposed converter and analysis.", "corpus_id": 54460376, "venue": "2018 15th International Multi Conference on Systems, Signals Devices (SSD)", "year": 2018, "author_names": [ "Slah Farhani", "Faouzi Bacha" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "217252003", "title": "An Isolated DC/DC Converter Using High Frequency Unregulated LLC Resonant Converter for Fuel Cell Applications", "abstract": "", "corpus_id": 217252003, "venue": "", "year": 2017, "author_names": [ "P Narmadha Devi", "S Aravind" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "117453702", "title": "(Invited) Solid Oxide Fuel Cell Development at Redox Power Systems, LLC", "abstract": "", "corpus_id": 117453702, "venue": "", "year": 2017, "author_names": [ "Sean R Bishop" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "113934007", "title": "Design and development of LLC DC/DC converter for fuel cell range extender application", "abstract": "This paper is focused on the design and development of a new DC/DC converter based on LLC topology for charging the traction battery in an electric vehicle from the fuel cell stack. The input voltage range is 16 22 V and the output voltage is 275 350 V operating at maximum power of 1.25 kW (5 kW, four in parallel) The presented demonstrator consists of four parallel converters. The DC/DC converter has a high efficiency of about 95 high power density and low cost.", "corpus_id": 113934007, "venue": "", "year": 2016, "author_names": [ "Akshay Mahajan", "Stefan Reichert" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "45115769", "title": "Fuel Cell power system with LLC resonant DC/DC converter", "abstract": "Fuel Cells (FC) are widely investigated for their potential use in electric transportation due of their capability to provide significant amounts of energy with low noise and with almost zero emission. FC based power sources are non linear system with low voltage and high current capabilities and with efficiency close to 50% Several researches are in progress, aiming at increasing overall efficiency through optimised combination of components, mainly the FC and the DC/DC converter necessary for its interface with the vehicle DC bus or the recharging station. In this paper, a novel and efficient power system architecture suitable for fuel cell powered vehicles and for recharging stations is proposed. The proposed system includes a fuel cell stack and a LLC resonant DC/DC converter with step up capability. The latter due its to soft switching operations ensures enhanced efficiency over conventional hard switching counterpart. The proposed system has been modeled in a mixed PSIM MATLAB/Simulink environment; design criteria and procedures are discussed for further applications and simulation results are shown to validate the proposed solution.", "corpus_id": 45115769, "venue": "2014 IEEE International Electric Vehicle Conference (IEVC)", "year": 2014, "author_names": [ "Valeria Boscaino", "Rosario Miceli", "Concettina Buccella", "Carlo Cecati", "Hamed Latafat", "Kaveh Razi" ], "n_citations": 1, "n_key_citations": 0, "score": 2 }, { "doc_id": "38913237", "title": "A HIGH EFFICIENCY FUEL CELL REPLACEDBY AN LLC RESONANT DC DC CONVERTER", "abstract": "In this paper, a high efficiency fuel cell implemented by an LLC resonant dc dc converter is proposed to save the cost and energy of fuel cell. The proposed converter has zero voltage switching (ZVS) operation of the primary switches and zero current switching (ZCS) operation of the rectifier diodes. By frequency modulation control, the output impedance of an LLC resonant converter can be regulated from zero to infinite without shunt or serial resistors. Proton Exchange Membrane fuel cell (PEMFC) is one of the promising technologies for the distributed power generation. For designing high efficiency fuel cell power systems, a suitable DC DC converter is required. Among the various topologies, interleavedboost converter (IBC) is considered as a better solution for fuel cell systems, due to improved electrical performance, reduced weight and size.", "corpus_id": 38913237, "venue": "", "year": 2014, "author_names": [ "S Suriya", "A Santhi Mary Antony" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "13985413", "title": "A novel analysis of high frequency LLC converter for fuel cell systems", "abstract": "This paper presents the analysis and design of isolated dc/dc converter using an unregulated LLC converter for fuel cell applications. The LLC converter operates as an isolated voltage amplifier with a constant voltage gain, and a non isolated converter installed in the input stage regulates the output voltage under a wide variation of fuel cell stack voltage. By separating the functions, the unregulated LLC converter can be operated at an optimal switching condition, and the high frequency operation of 300 kHz can be accomplished without introducing an excessive switching loss. The prototype converter with a 1 kW design shows an improved efficiency under a 48V input and full load conditions. The circuit models are developed for simulation studies. Closed loop systems are modeled and they are simulated using Matlab Simulink. The results of simulation and hardware are presented. Experimental results are compared with simulation results.", "corpus_id": 13985413, "venue": "2013 International Conference on Information Communication and Embedded Systems (ICICES)", "year": 2013, "author_names": [ "S Arumugam", "E L Karthikeyan", "P Saikumar" ], "n_citations": 3, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "210102878", "title": "Crime Around the World: Using Mathematical Modeling Techniques to Model Aggregated Worldwide Crime Rates", "abstract": "This aim of this study was to determine what affects aggregate crime rates around the world. This thesis used Mathematical Modeling techniques to build generalized linear models for homicide rates and burglary and housebreaking rates using the following predictive factors: economic indicators, education rates, government quality indicators, ethno linguistic fractionalization, GDP per capita and its growth, drug consumption rates, and age and gender ratios. We used a series of factor selection techniques including linear and stepwise regressions, principal component analysis, and regression analysis to select factors to use to build final models of homicide and burglary and housebreaking.", "corpus_id": 210102878, "venue": "", "year": 2018, "author_names": [ "Kelly M Steurer" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198681257", "title": "College Crime and Retention Rates", "abstract": "Increased media attention on college crime has led to greater prioritization of campus safety when selecting a college to attend. This, coupled with society's view of higher education as a necessity to succeed in the labor market, creates a potential tradeoff between safety on campus and future job success. To analyze such tradeoff, I examine whether college crime affects retention rates at four year American institutions. While literature has focused on college crime and factors that affect the decision to begin attending a college, no study has solely focused on the college crime and the decision to continue attending a college. Using data from the US Department of Education, I estimate the effect of college crime and changing college crime expectations on retention rates from 2009 to 2016 for four year institutions using linear and nonlinear OLS regressions. Such results have implications for college policies to combat crime on campus not only to keep students safe, but to prevent students from transferring or dropping out. Using an instrumental regression with a proxy for average state temperature, along with fixed effects and interaction terms, I find that college crime expectations and college crime overall have a negative, statistically insignificant effect on retention rates.", "corpus_id": 198681257, "venue": "", "year": 2019, "author_names": [ "Abigail R Hauer" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "55355162", "title": "High School Graduation Rates in the Metro Detroit Area: What Really Affects Public Secondary Education", "abstract": "Education is essential to the future productivity of workers in the Metropolitan Detroit area, so determining what impacts high school graduation is vital to predicting the future success of our economy. This research investigates what key aspects in our society affect the high school graduation rate: poverty level, violent crime rate, student body, class size, local school taxes, and standardized test scores. Results from multiple regressions using school district and city data from the CCD and FBI suggest that poverty levels and violent crime in the Metro Detroit area significantly, negatively influence high school graduation rates. Reforms to public policy reducing crime and poverty rates in Metro Detroit could improve high school graduation rates and help minimize the potential for the Motor City to lose its cutting edge in the auto industry and help diversify Michigan's future human capital. This article is available in Undergraduate Economic Review: http:/digitalcommons.iwu.edu/uer/vol5/iss1/4 Undergraduate Economic Review A publication of Illinois Wesleyan University", "corpus_id": 55355162, "venue": "", "year": 2009, "author_names": [ "Thomas A Wilk" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "154326919", "title": "The Impact of Supportive Housing on Neighborhood Crime Rates", "abstract": "Quantitative and qualitative methods are employed to investigate the extent to which proximity to 14 supportive housing facilities opening in Denver from 1992 to 1995 affects crime rates. The econometric specification provides pre and post controls for selection bias as well as a spatial autocorrelation correction. Focus groups with homeowners living near supportive housing provide richer context for interpreting the econometric results. The findings suggest that developers paying close attention to facility scale and siting can avoid negative neighborhood impacts and render their supportive housing invisible to neighbors. Implications for structuring local regulations and public education regarding supportive housing facilities follow.", "corpus_id": 154326919, "venue": "", "year": 2002, "author_names": [ "George C Galster", "Kathryn L S Pettit", "Anna Maria Santiago", "Peter A Tatian" ], "n_citations": 46, "n_key_citations": 5, "score": 1 }, { "doc_id": "57567473", "title": "More Choice, Less Crime", "abstract": "Previous research debates whether public school choice improves students' academic outcomes, but there is little examination of its effects on their nonacademic outcomes. We use data from a nationally representative sample of high school students, a previously developed Tiebout choice measure, and metropolitan level data on teenage arrest rates to examine how public school choice affects students' propensity to be arrested or to join a gang. Adolescents in metropolitan areas with more public school choice are less likely to be associated with criminal activity, suggesting that the benefits of public school choice extend outside the classroom.", "corpus_id": 57567473, "venue": "Education Finance and Policy", "year": 2011, "author_names": [ "Angela K Dills", "Rey Hernndez-Julin" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "145346090", "title": "Education's Effects on Individual Life Chances and On Development: An Overview", "abstract": "ABSTRACT This paper estimates the effects of human capital skills largely created through education on life's chances over the life cycle. Qualifications as a measure of these skills affect earnings, and schooling affects private and social non market benefits beyond earnings. Private non market benefits include better own health, child health, spousal health, infant mortality, longevity, fertility, household efficiency, asset management and happiness. Social benefits include increased democratisation, civil rights, political stability, reduced crime, lower prison, health and welfare costs, and new ideas. Individual benefits enhance community wide development. New 'narrow' social rates of return using UK Labour Force earnings correct for institutional costs, longitudinal trends and ability. The paper's objective, however, is to estimate these earnings plus non market outcomes comprehensively without overlaps and also relative to costs. Non market outcomes are measured by averaging regression coefficients from published studies that meet scientific standards. New UK 'narrow' social rates of return average 12.1 per cent for short cycle and 13.6 per cent for bachelor's programmes. Augmented with non market effects on life chances, they are over twice that. Short degrees are found effective for regional development and have potential for developing countries.", "corpus_id": 145346090, "venue": "", "year": 2013, "author_names": [ "Walter W mcmahon", "Moses Oketch" ], "n_citations": 46, "n_key_citations": 4, "score": 0 }, { "doc_id": "169843028", "title": "Big Data in Investigating and Preventing Crimes", "abstract": "The relevance of the research topic is caused by the discrepancy of the modern capabilities of the Big Data technologies with the low rates of its implementation and use in the investigation and prevention of crimes. Today, Big Data technologies are increasing their presence in solving problems in the system of public administration, economy, education, healthcare, ecology, construction, culture, trade and other spheres of human activity. The limited use of the methods of analysis of Big Data in the investigation and prevention of crimes does not allow a qualitative analysis of the available information of the crime, establish cause effect relations, create a social portrait of the criminal, which disadvantageously affects the effectiveness of counter crime activities. The chapter presents a comprehensive analysis of the possibilities and directions of using the Big Data technologies in solving typical problems of investigation and prevention of crimes. Some aspects of using the capabilities of Big Data technologies in the investigation and prevention of crime are given taking into account the comparative analysis of Russian and foreign law enforcement experience. The main directions and conditions for the application of the Big Data technologies in the investigation and prevention of crimes are determined and their perspectives are presented. The use of Big Data technologies in crime investigation and prevention will allow us to solve a wide range of crime prevention tasks at a higher level using professional expert systems and computer applications, as well as to improve the quality of crime investigation and reduce its terms.", "corpus_id": 169843028, "venue": "", "year": 2019, "author_names": [ "Elena Bulgakova", "Vladimir V Bulgakov", "Igor Trushchenkov", "Dmitry Vasilev", "Evgeny Kravets" ], "n_citations": 6, "n_key_citations": 0, "score": 1 }, { "doc_id": "226677740", "title": "ECONOMIC INEQUALITY AND POVERTY IN EUROPEAN UNION", "abstract": "Excessive accumulation and raising income inequality re flected on the high rates of poverty in the European Union countries. Economic literature has wide research on the link between income inequality and economic growth. However, knowledge about correlation between income inequality and poverty is scare. In this paper, we have proved that poverty is not synonymous for income ine quality, but that is a product of income inequality. Income inequality, measured by the Gini coefficient, reflected the movement of the percentage of the population who are at risk of poverty. The coefficient of simple on correlation showed that income inequality affects the growth risk of poverty in the countries of the European Union. Besides poverty, as a consequence of income inequality, other socio economic problems also appeared: the suppression of economic growth, the rise in crime rate, the decline in the quality of education and health, the political inequal ity growth. All these problems should warn governments to take economic policy for reducing economic inequal ity. The European Union, as an area of 28 member states, needs to carefully select economic policy instruments to reduce income inequality and ensure stable ground for economic growth. The differences between the level of development, the index of democracy, income and liv ing standards in observed countries have influenced the difficulty in observing the problem and computing math ematical and statistical connection. Through equalization of incomes, the European Union could solve problems of poverty, social exclusion and democracy (measured by index of democracy)", "corpus_id": 226677740, "venue": "ACTA ECONOMICA", "year": 2019, "author_names": [ "Bozana Skoric", "Jelena Bjelic", "Marija Nikolic", "Luis Javier Chirosa" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "153457679", "title": "Finding the Education Gap in Allen County", "abstract": "Education is an issue that affects us all. It is not something that you buy once and never use again, but rather an investment. It is something that no one can ever take away from you. Education allows for growth in all areas of life. Higher levels of education result in lower crime rates and boost the economy. The way that the United States attempts to offer a basic education to all citizens is through thirteen years of elementary, middle, and high school education. However, this system has not always proven to afford the same opportunities to every student. Our country has had a long history of discrimination within education, from before Brown v. The Board of Education (1958) and continuing today. While courts and legislatures have tried to rectify overt discrimination it is clear that minority students still face a less transparent battle in equal educational success. This inequity can be seen not only at a national level, but also at a local level here in Allen County. My research focuses on educational outcomes in the Fort Wayne Community, East Allen County, Southwest Allen County, and Northwest Allen County school districts. I have analyzed different testing measures of the students such as SAT and ACT scores, diploma types, graduation rates, and other indicators that will determine a student's success in education after high school. The data sets are from 2007 to 2011 and include the most recent data. This analysis of college success indicators show that minority students within our area schools, while improving, are still not achieving at rates that are equitable to their white counterparts. Moreover, Allen County students are not meeting benchmarks that are predictive of college success. 1470 Results In comparison to the national average, Indiana will see a nearly 9% increase in jobs across the state and in the STEM field. However, this is about 8% less than the national average. It is projected that there will be an increase from 105,560 jobs in 2008 to 115,570 jobs in 2018. With this increased amount of opportunities in the STEM field our high schools should also be reflecting a push towards these opportunities for all students. However, this is not what is seen in the performance data of the FWCS, EACS, SACS and NACS. The opportunities are diminished even more for minority students within these school districts. As a whole these four school districts have never seen more than 33% of the graduates from a given school continuing their education in the STEM field and have mostly been under 25% since 2007. These schools have seen an increase in overall graduation rates every year since 2007, especially with minority students, but these graduates are still failing to succeed on tests and in classes that prepare them for education beyond high school at much higher rates. As well as being under represented within these \"college ready\" opportunities. This disadvantage is seen in the free/reduced lunch rates as well. Students who receive benefits of having either free or reduced lunch rates are also graduating at much lower rates of Academic Honor and Core 40 diplomas The SAT or the ACT are entrance exams required by all 4 year institutions for beginning freshman admittance. While the highest composite score of the SAT and ACT are 2400 and 36 respectively, Indiana saw its highest overall average composite SAT score of 1472 in both 2009 10 and the 2010 11 school years. The College Board is the administrator of the exams, and they have also configured a benchmark result for the SAT of 1550. This benchmark is a predictor of the students success in the student's first year of college. While not a guarantee, it does predict that 65% of those students receiving the 1550 benchmark are at a greater probability of earning at least a B(2.7 GPA) during their first year of college. Within the years examined the State of Indiana has not met that benchmark. Only SACS and NACS have consistently met this benchmark in Allen County. SACS saw the highest levels in 2007 08 school year with a composite score of 1629. EACS and FWCS composite scores have not seen a score higher than 1468 in 2008 10. Method The four school districts in Allen County comprising eighteen high schools and thirty two elementary schools were analyzed through the results of the student's testing measures. Public schools published all SAT, AP, free or reduced lunch, ISTEP+ remediation rates, and diploma types. Private schools published only information for remediation, graduation rates, and diploma types. All of the information obtained was through the Indiana Department of Education, College Board, and Indiana Commission for Higher Education. State totals were also provided. The information was examined for the school years of 2007 through 2011, because these were the most recent years provided by the state at the start of the research. Job growth information, especially on Science, Technology, Engineering, and Math (STEM) statistics were obtained from the US Department of Labor, US Department of Commerce and Georgetown University. The SAT College and Career Readiness Benchmark 22 The SAT Report on College Career Readiness The College Readiness Continuum Many factors contribute to college readiness. A student is considered college ready when he or she has the knowledge, skills and behaviors to successfully complete a college course of study. Because college readiness and completion is dependent on many academic and nonacademic factors, students who score below the SAT Benchmark can still succeed in college. The College Board continues to advise that, for individual high stakes decisions such as admission, SAT scores should always be used together with high school grades and other factors. PROBABILITY OF ACHIEVING A FIRST YEAR COLLEGE GPA OF A BOR HIGHER BY SAT PERFORMANCE 0% 20% 40% 60% 80% 100% 1 0 5 0 11 0 0 11 5 0", "corpus_id": 153457679, "venue": "", "year": 2013, "author_names": [ "Jessica Davis", "James Garwood" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "154592172", "title": "More Choice, Less Crime", "abstract": "Previous research debates whether public school choice improves students' academic outcomes, but there is little examination of its effects on their nonacademic outcomes. We use data from a nationally representative sample of high school students, a previously developed Tiebout choice measure, and metropolitan level data on teenage arrest rates to examine how public school choice affects students' propensity to be arrested or to join a gang. Adolescents in metropolitan areas with more public school choice are less likely to be associated with criminal activity, suggesting that the benefits of public school choice extend outside the classroom. (c) 2011 Association for Education Finance and Policy", "corpus_id": 154592172, "venue": "", "year": 2007, "author_names": [ "Angela K Dills", "Rey Hernandez-Julian" ], "n_citations": 5, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "16189318", "title": "Self awareness, self regulation, and self transcendence (S ART) a framework for understanding the neurobiological mechanisms of mindfulness", "abstract": "Mindfulness as a state, trait, process, type of meditation, and intervention has proven to be beneficial across a diverse group of psychological disorders as well as for general stress reduction. Yet, there remains a lack of clarity in the operationalization of this construct, and underlying mechanisms. Here, we provide an integrative theoretical framework and systems based neurobiological model that explains the mechanisms by which mindfulness reduces biases related to self processing and creates a sustainable healthy mind. Mindfulness is described through systematic mental training that develops meta awareness (self awareness) an ability to effectively modulate one's behavior (self regulation) and a positive relationship between self and other that transcends self focused needs and increases prosocial characteristics (self transcendence) This framework of self awareness, regulation, and transcendence (S ART) illustrates a method for becoming aware of the conditions that cause (and remove) distortions or biases. The development of S ART through meditation is proposed to modulate self specifying and narrative self networks through an integrative fronto parietal control network. Relevant perceptual, cognitive, emotional, and behavioral neuropsychological processes are highlighted as supporting mechanisms for S ART, including intention and motivation, attention regulation, emotion regulation, extinction and reconsolidation, prosociality, non attachment, and decentering. The S ART framework and neurobiological model is based on our growing understanding of the mechanisms for neurocognition, empirical literature, and through dismantling the specific meditation practices thought to cultivate mindfulness. The proposed framework will inform future research in the contemplative sciences and target specific areas for development in the treatment of psychological disorders.", "corpus_id": 16189318, "venue": "Front. Hum. Neurosci.", "year": 2012, "author_names": [ "David R Vago", "David Silbersweig" ], "n_citations": 692, "n_key_citations": 53, "score": 0 }, { "doc_id": "12924360", "title": "Towards a cognitive neuroscience of self awareness", "abstract": "Self awareness is a pivotal component of conscious experience. It is correlated with a paralimbic network of medial prefrontal/anterior cingulate and medial parietal/posterior cingulate cortical \"hubs\" and associated regions. Electromagnetic and transmitter manipulation have demonstrated that the network is not an epiphenomenon but instrumental in generation of self awareness. Thus, transcranial magnetic stimulation (TMS) targeting the hubs impedes different aspects of self awareness with a latency of 160ms. The network is linked by ~40Hz oscillations and regulated by dopamine. The oscillations are generated by rhythmic GABA ergic inhibitory activity in interneurons with an extraordinarily high metabolic rate. The hubs are richly endowed with interneurons and therefore highly vulnerable to disturbed energy supply. Consequently, deficient paralimbic activity and self awareness are characteristic features of many disorders with impaired oxygen homeostasis. Such disorders may therefore be treated unconventionally by targeting interneuron function.", "corpus_id": 12924360, "venue": "Neuroscience Biobehavioral Reviews", "year": 2017, "author_names": [ "Hans C Lou", "Jean Pierre Changeux", "Astrid Rosenstand" ], "n_citations": 43, "n_key_citations": 3, "score": 1 }, { "doc_id": "4828311", "title": "Self Awareness in Systems on Chip A Survey", "abstract": "<italic>Editor's note:/italic> Self awareness is a desirable feature of emerging computing systems. It helps systems to understand, manage, and report on their own system behavior. This paper presents an overview centered around the paradigm of self awareness in computing systems. <italic> Partha Pratim Pande, Washington State University</italic>", "corpus_id": 4828311, "venue": "IEEE Design Test", "year": 2017, "author_names": [ "Axel Jantsch", "Nikil D Dutt", "Amir-Mohammad Rahmani" ], "n_citations": 31, "n_key_citations": 2, "score": 1 }, { "doc_id": "201372462", "title": "Increasing self awareness", "abstract": "", "corpus_id": 201372462, "venue": "", "year": 2018, "author_names": [ "John Knights" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151751026", "title": "Self efficacy and self awareness: moral insights to increased leader effectiveness", "abstract": "Purpose The purpose of this paper is to identify the relationships between self efficacy and self awareness and the moral obligations of leaders in understanding and developing these personal qualities. As leaders strive for excellence, self efficacy and self awareness can empower them to unlock their own potential and the potential of their organizations and those with whom they work. Design/methodology/approach The paper integrates research of self efficacy and self awareness as they pertain to ethical leadership and presents six propositions that increase leadership effectiveness, create value for the organization, and develop leaders considered my trusted by others. Findings The authors argue that greater understanding of self efficacy and self awareness is important for individual growth and can enable ethical leaders to empower themselves, their colleagues, and the organization in which they work. Research limitations/implications This research presents six propositions concerning self efficacy and self awareness and their influence on effective leadership that can be tested in future research. The ethically based nature of self efficacy and self awareness merits additional academic research and practitioner application. Practical implications This paper provides valuable insights to scholars and practitioners by proposing six propositions that will allow leaders to increase their effectiveness and add value to the organization. Social implications Ethical leaders add value by continuously improving themselves. Ethical leaders owe it to others and themselves to be more effective through a greater understanding of self efficacy and self awareness. Originality/value Self efficacy and self awareness are moral duties associated with the identities of leaders and important for leaders in understanding their own capabilities and identities. Greater knowledge of self efficacy and self awareness can enable ethical leaders to be more effective and create value.", "corpus_id": 151751026, "venue": "", "year": 2016, "author_names": [ "Cam Caldwell", "Linda A Hayes" ], "n_citations": 40, "n_key_citations": 3, "score": 0 }, { "doc_id": "17701994", "title": "The Benefits of Self Awareness and Attention in Fog and Mist Computing", "abstract": "Self awareness facilitates a proper assessment of cost constrained cyber physical systems, allocating limited resources where they are most needed. Together, situation awareness and attention are key enablers for self awareness in efficient distributed sensing and computing networks.", "corpus_id": 17701994, "venue": "Computer", "year": 2015, "author_names": [ "Jurgo-Soren Preden", "Kalle Tammemae", "Axel Jantsch", "Mairo Leier", "Andri Riid", "Emine Calis" ], "n_citations": 121, "n_key_citations": 4, "score": 0 }, { "doc_id": "17176478", "title": "Measuring the Effects of Self Awareness: Construction of the Self Awareness Outcomes Questionnaire", "abstract": "Dispositional self awareness is conceptualized in several different ways, including insight, reflection, rumination and mindfulness, with the latter in particular attracting extensive attention in recent research. While self awareness is generally associated with positive psychological well being, these different conceptualizations are also each associated with a range of unique outcomes. This two part, mixed methods study aimed to advance understanding of dispositional self awareness by developing a questionnaire to measure its outcomes. In Study 1, expert focus groups categorized and extended an initial pool of potential items from previous research. In Study 2, these items were reduced to a 38 item self report questionnaire with four factors representing three beneficial outcomes (reflective self development, acceptance and proactivity) and one negative outcome (costs) Regression of these outcomes against self awareness measures revealed that self reflection and insight predicted beneficial outcomes, rumination predicted reduced benefits and increased costs, and mindfulness predicted both increased proactivity and costs. These studies help to refine the self awareness concept by identifying the unique outcomes associated with the concepts of self reflection, insight, reflection, rumination and mindfulness. It can be used in future studies to evaluate and develop awareness raising techniques to maximize self awareness benefits while minimizing related costs.", "corpus_id": 17176478, "venue": "Europe's journal of psychology", "year": 2016, "author_names": [ "Anna Sutton" ], "n_citations": 38, "n_key_citations": 6, "score": 0 }, { "doc_id": "116996", "title": "Induction of self awareness in dreams through frontal low current stimulation of gamma activity", "abstract": "Recent findings link fronto temporal gamma electroencephalographic (EEG) activity to conscious awareness in dreams, but a causal relationship has not yet been established. We found that current stimulation in the lower gamma band during REM sleep influences ongoing brain activity and induces self reflective awareness in dreams. Other stimulation frequencies were not effective, suggesting that higher order consciousness is indeed related to synchronous oscillations around 25 and 40 Hz.", "corpus_id": 116996, "venue": "Nature Neuroscience", "year": 2014, "author_names": [ "Ursula Voss", "Romain Holzmann", "Allan Hobson", "Walter Paulus", "Judith Koppehele-Gossel", "Ansgar Klimke", "Michael A Nitsche" ], "n_citations": 240, "n_key_citations": 23, "score": 0 }, { "doc_id": "143394626", "title": "The watching eyes phenomenon: The role of a sense of being seen and public self awareness", "abstract": "In recent years, a growing number of researchers have examined the watching eyes phenomenon (i.e. increased prosocial and decreased antisocial behavior when subtle watching eyes are present in the environment) Somewhat surprisingly, the questions of how and under what conditions subtle cues of being watched operate have been unanswered so far. The present contribution addresses this research gap. In two studies, we document that (a) subtle cues of being watched induce a sense of being seen and (b) chronic public self awareness moderates the watching eyes phenomenon in that specifically individuals with strong chronic public self awareness show more prosocial behavior under conditions of watching eyes. The applicability of subtle cues of being watched in research on social presence is discussed.", "corpus_id": 143394626, "venue": "", "year": 2015, "author_names": [ "Stefan Pfattheicher", "Johannes Keller" ], "n_citations": 64, "n_key_citations": 3, "score": 0 }, { "doc_id": "24083587", "title": "INCOG Recommendations for Management of Cognition Following Traumatic Brain Injury, Part III: Executive Function and Self Awareness", "abstract": "Introduction:Traumatic brain injury (TBI) results in complex cognitive (and other) sequelae. Impairments in executive function and self awareness are among the most characteristic neuropsychological sequelae and can exert a profound effect on resuming previous life roles. An international group of researchers and clinicians (known as INCOG) convened to develop recommendations for interventions to improve impairments in executive functioning and self awareness after TBI. Methods:The team reviewed the available literature and ensured the recommendations were current. To promote implementation, the team developed decision algorithms incorporating the recommendations based on inclusion and exclusion criteria of published trials. The team then prioritized the recommendations for implementation and developed audit criteria to evaluate the adherence to the best practice recommendations. Results:Intervention programs incorporating metacognitive strategy instruction for planning, problem solving, and other cognitive executive impairments have a solid evidence base. New evidence supports the use of strategies to specifically improve reasoning skills. Substantial support exists for use of direct corrective feedback to improve self awareness. Conclusions:An increasing number of scientifically well designed studies are available that demonstrate the effectiveness of a variety of interventions for the remediation of impairments in executive function and self awareness after TBI.", "corpus_id": 24083587, "venue": "The Journal of head trauma rehabilitation", "year": 2014, "author_names": [ "Robyn L Tate", "Mary R T Kennedy", "Jennie Louise Ponsford", "Jacinta M Douglas", "Diana Velikonja", "Mark Theodore Bayley", "Mary Stergiou-Kita" ], "n_citations": 98, "n_key_citations": 12, "score": 0 } ]

[ { "doc_id": "55075143", "title": "First principles phonon calculations in materials science", "abstract": "Abstract Phonon plays essential roles in dynamical behaviors and thermal properties, which are central topics in fundamental issues of materials science. The importance of first principles phonon calculations cannot be overly emphasized. Phonopy is an open source code for such calculations launched by the present authors, which has been world widely used. Here we demonstrate phonon properties with fundamental equations and show examples how the phonon calculations are applied in materials science.", "corpus_id": 55075143, "venue": "", "year": 2015, "author_names": [ "Atsushi Togo", "Isao Tanaka" ], "n_citations": 3325, "n_key_citations": 27, "score": 1 }, { "doc_id": "222350993", "title": "A materials science perspective on tackling COVID 19", "abstract": "The ongoing SARS CoV 2 pandemic highlights the importance of materials science in providing tools and technologies for antiviral research and treatment development. In this Review, we discuss previous efforts in materials science in developing imaging systems and microfluidic devices for the in depth and real time investigation of viral structures and transmission, as well as material platforms for the detection of viruses and the delivery of antiviral drugs and vaccines. We highlight the contribution of materials science to the manufacturing of personal protective equipment and to the design of simple, accurate and low cost virus detection devices. We then investigate future possibilities of materials science in antiviral research and treatment development, examining the role of materials in antiviral drug design, including the importance of synthetic material platforms for organoids and organs on a chip, in drug delivery and vaccination, and for the production of medical equipment. Materials science based technologies not only contribute to the ongoing SARS CoV 2 research efforts but can also provide platforms and tools for the understanding, protection, detection and treatment of future viral diseases. Materials science provides tools and technologies for the protection against viral infections, as well as for the understanding, diagnosis, treatment and prevention of viral diseases. This Review discusses present and future directions in antiviral materials science research, with a focus on COVID 19.", "corpus_id": 222350993, "venue": "Nature Reviews Materials", "year": 2020, "author_names": [ "Zhongmin Tang", "Na Kong", "Xingcai Zhang", "Yang Liu", "Ping Hu", "Shan Mou", "Peter Liljestrom", "Jianlin Shi", "Weihong Tan", "Jong Seung Kim", "Yihai Cao", "Robert S Langer", "Kam W Leong", "Omid C Farokhzad", "Wei Tao" ], "n_citations": 63, "n_key_citations": 1, "score": 1 }, { "doc_id": "120429421", "title": "DScribe: Library of Descriptors for Machine Learning in Materials Science", "abstract": "DScribe is a software package for machine learning that provides popular feature transformations \"descriptors\" for atomistic materials simulations. DScribe accelerates the application of machine learning for atomistic property prediction by providing user friendly, off the shelf descriptor implementations. The package currently contains implementations for Coulomb matrix, Ewald sum matrix, sine matrix, Many body Tensor Representation (MBTR) Atom centered Symmetry Function (ACSF) and Smooth Overlap of Atomic Positions (SOAP) Usage of the package is illustrated for two different applications: formation energy prediction for solids and ionic charge prediction for atoms in organic molecules. The package is freely available under the open source Apache License 2.0.", "corpus_id": 120429421, "venue": "Comput. Phys. Commun.", "year": 2020, "author_names": [ "Lauri Himanen", "Marc O J Jager", "Eiaki V Morooka", "Filippo Federici Canova", "Yashasvi S Ranawat", "David Z Gao", "Patrick Rinke", "Adam Stuart Foster" ], "n_citations": 124, "n_key_citations": 0, "score": 0 }, { "doc_id": "210164878", "title": "Quantum Algorithms for Quantum Chemistry and Quantum Materials Science.", "abstract": "As we begin to reach the limits of classical computing, quantum computing has emerged as a technology that has captured the imagination of the scientific world. While for many years, the ability to execute quantum algorithms was only a theoretical possibility, recent advances in hardware mean that quantum computing devices now exist that can carry out quantum computation on a limited scale. Thus, it is now a real possibility, and of central importance at this time, to assess the potential impact of quantum computers on real problems of interest. One of the earliest and most compelling applications for quantum computers is Feynman's idea of simulating quantum systems with many degrees of freedom. Such systems are found across chemistry, physics, and materials science. The particular way in which quantum computing extends classical computing means that one cannot expect arbitrary simulations to be sped up by a quantum computer, thus one must carefully identify areas where quantum advantage may be achieved. In this review, we briefly describe central problems in chemistry and materials science, in areas of electronic structure, quantum statistical mechanics, and quantum dynamics that are of potential interest for solution on a quantum computer. We then take a detailed snapshot of current progress in quantum algorithms for ground state, dynamics, and thermal state simulation and analyze their strengths and weaknesses for future developments.", "corpus_id": 210164878, "venue": "Chemical reviews", "year": 2020, "author_names": [ "Bela Bauer", "Sergey Bravyi", "Mario Motta", "Garnet Kin-Lic Chan" ], "n_citations": 66, "n_key_citations": 0, "score": 1 }, { "doc_id": "195791303", "title": "Unsupervised word embeddings capture latent knowledge from materials science literature", "abstract": "The overwhelming majority of scientific knowledge is published as text, which is difficult to analyse by either traditional statistical analysis or modern machine learning methods. By contrast, the main source of machine interpretable data for the materials research community has come from structured property databases1,2, which encompass only a small fraction of the knowledge present in the research literature. Beyond property values, publications contain valuable knowledge regarding the connections and relationships between data items as interpreted by the authors. To improve the identification and use of this knowledge, several studies have focused on the retrieval of information from scientific literature using supervised natural language processing3 10, which requires large hand labelled datasets for training. Here we show that materials science knowledge present in the published literature can be efficiently encoded as information dense word embeddings11 13 (vector representations of words) without human labelling or supervision. Without any explicit insertion of chemical knowledge, these embeddings capture complex materials science concepts such as the underlying structure of the periodic table and structure property relationships in materials. Furthermore, we demonstrate that an unsupervised method can recommend materials for functional applications several years before their discovery. This suggests that latent knowledge regarding future discoveries is to a large extent embedded in past publications. Our findings highlight the possibility of extracting knowledge and relationships from the massive body of scientific literature in a collective manner, and point towards a generalized approach to the mining of scientific literature. Natural language processing algorithms applied to three million materials science abstracts uncover relationships between words, material compositions and properties, and predict potential new thermoelectric materials.", "corpus_id": 195791303, "venue": "Nature", "year": 2019, "author_names": [ "Vahe Tshitoyan", "John Dagdelen", "Leigh Weston", "Alex Dunn", "Ziqin Rong", "Olga Kononova", "Kristin A Persson", "Gerbrand Ceder", "Anubhav Jain" ], "n_citations": 291, "n_key_citations": 5, "score": 0 }, { "doc_id": "199492241", "title": "Recent advances and applications of machine learning in solid state materials science", "abstract": "One of the most exciting tools that have entered the material science toolbox in recent years is machine learning. This collection of statistical methods has already proved to be capable of considerably speeding up both fundamental and applied research. At present, we are witnessing an explosion of works that develop and apply machine learning to solid state systems. We provide a comprehensive overview and analysis of the most recent research in this topic. As a starting point, we introduce machine learning principles, algorithms, descriptors, and databases in materials science. We continue with the description of different machine learning approaches for the discovery of stable materials and the prediction of their crystal structure. Then we discuss research in numerous quantitative structure property relationships and various approaches for the replacement of first principle methods by machine learning. We review how active learning and surrogate based optimization can be applied to improve the rational design process and related examples of applications. Two major questions are always the interpretability of and the physical understanding gained from machine learning models. We consider therefore the different facets of interpretability and their importance in materials science. Finally, we propose solutions and future research paths for various challenges in computational materials science.", "corpus_id": 199492241, "venue": "npj Computational Materials", "year": 2019, "author_names": [ "Jonathan Schmidt", "Mario R G Marques", "Silvana Botti", "Miguel A L Marques" ], "n_citations": 457, "n_key_citations": 3, "score": 0 }, { "doc_id": "139184979", "title": "From DFT to machine learning: recent approaches to materials science a review", "abstract": "Recent advances in experimental and computational methods are increasing the quantity and complexity of generated data. This massive amount of raw data needs to be stored and interpreted in order to advance the materials science field. Identifying correlations and patterns from large amounts of complex data is being performed by machine learning (ML) algorithms for decades. Recently, the materials science community started to invest in these methodologies to extract knowledge and insights from the accumulated data. This review follows a logical sequence starting from density functional theory (DFT) as the representative instance of electronic structure methods, to the subsequent high throughput (HT) approach, used to generate large amounts of data. Ultimately, data driven strategies which include data mining, screening, and machine learning techniques, employ the data generated. We show how these approaches to modern computational materials science are being used to uncover complexities and design novel materials with enhanced properties. Finally, we point to the present research problems, challenges, and potential future perspectives of this new exciting field.", "corpus_id": 139184979, "venue": "Journal of Physics: Materials", "year": 2019, "author_names": [ "Gabriel Ravanhani Schleder", "Antonio Claudio M Padilha", "Carlos Mera Acosta", "Marcio Costa", "Adalberto Fazzio" ], "n_citations": 175, "n_key_citations": 2, "score": 0 }, { "doc_id": "186802303", "title": "Active learning in materials science with emphasis on adaptive sampling using uncertainties for targeted design", "abstract": "One of the main challenges in materials discovery is efficiently exploring the vast search space for targeted properties as approaches that rely on trial and error are impractical. We review how methods from the information sciences enable us to accelerate the search and discovery of new materials. In particular, active learning allows us to effectively navigate the search space iteratively to identify promising candidates for guiding experiments and computations. The approach relies on the use of uncertainties and making predictions from a surrogate model together with a utility function that prioritizes the decision making process on unexplored data. We discuss several utility functions and demonstrate their use in materials science applications, impacting both experimental and computational research. We summarize by indicating generalizations to multiple properties and multifidelity data, and identify challenges, future directions and opportunities in the emerging field of materials informatics.", "corpus_id": 186802303, "venue": "npj Computational Materials", "year": 2019, "author_names": [ "Turab Lookman", "Prasanna V Balachandran", "Dezhen Xue", "Ruihao Yuan" ], "n_citations": 116, "n_key_citations": 2, "score": 0 }, { "doc_id": "211526014", "title": "Superatoms in materials science", "abstract": "Clusters are ensembles of bound atoms intermediate in size between a molecule and a bulk solid. Some of these clusters form stable units with atomically precise structures that give rise to collective behaviours that mimic those of traditional atoms, essentially functioning as 'superatoms' Such superatoms are exciting, nanoscale building blocks for materials design. Sustained synthetic and theoretical efforts over the past 40 years have created a vast library of chemically tuneable superatoms that display unique physical and chemical properties. The use of superatoms as building blocks for materials offers opportunities to design materials with tailored functionalities; however, this potential has only begun to be realized in the past few years. The assembly of superatomic crystals presents numerous challenges, including the design of suitable building blocks, control of the self assembly process, promotion of strong inter superatom coupling and understanding the resulting collective properties. In this Review, we assess recent advances in meeting these challenges by focusing on metal chalcogenide and carbon based clusters (for example, fullerenes) as superatomic building blocks. Molecular clusters can be used as tuneable, superatomic building blocks to create new functional materials. This Review outlines the synthesis and assembly of superatoms into superatomic crystals and the resulting collective material properties.", "corpus_id": 211526014, "venue": "Nature Reviews Materials", "year": 2020, "author_names": [ "Evan A Doud", "Anastasia Voevodin", "Taylor J Hochuli", "Anouck M Champsaur", "Colin P Nuckolls", "Xavier Roy" ], "n_citations": 25, "n_key_citations": 0, "score": 0 }, { "doc_id": "196470911", "title": "Data Driven Materials Science: Status, Challenges, and Perspectives", "abstract": "Abstract Data driven science is heralded as a new paradigm in materials science. In this field, data is the new resource, and knowledge is extracted from materials datasets that are too big or complex for traditional human reasoning typically with the intent to discover new or improved materials or materials phenomena. Multiple factors, including the open science movement, national funding, and progress in information technology, have fueled its development. Such related tools as materials databases, machine learning, and high throughput methods are now established as parts of the materials research toolset. However, there are a variety of challenges that impede progress in data driven materials science: data veracity, integration of experimental and computational data, data longevity, standardization, and the gap between industrial interests and academic efforts. In this perspective article, the historical development and current state of data driven materials science, building from the early evolution of open science to the rapid expansion of materials data infrastructures are discussed. Key successes and challenges so far are also reviewed, providing a perspective on the future development of the field.", "corpus_id": 196470911, "venue": "Advanced science", "year": 2019, "author_names": [ "Lauri Himanen", "Amber Geurts", "Adam Stuart Foster", "Patrick Rinke" ], "n_citations": 106, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "221458268", "title": "Covid 19 related encephalopathy: a case series with brain FDG PET/CT findings", "abstract": "Abstract Background A variety of neurological manifestations have been reported in association with Covid 19. Covid 19 related encephalopathy has seldom been reported and studied. Methods We report four cases of Covid 19 related encephalopathy. The diagnosis was made in patients with confirmed Covid 19 who presented with new onset cognitive disturbances, central focal neurological signs or seizures. All patients underwent cognitive screening, brain MRI, lumbar puncture, and brain FDG PET/CT. Results The four patients were 60 years of age or older, and presented with various degrees of cognitive impairment, with predominant frontal lobe impairment. Two patients presented with cerebellar syndrome, one had myoclonus, one had psychiatric manifestations, and one patient had status epilepticus. The delay between first Covid 19 symptoms and onset of neurological symptoms was between 0 and 12 days. None of the patients had MRI features of encephalitis nor significant CSF abnormalities. SARS CoV 2 RT PCR in the CSF was negative for all patients. All patients presented with a consistent brain FDG PET/CT pattern of abnormalities, namely frontal hypometabolism and cerebellar hypermetabolism. All patients improved after immunotherapy. Conclusions Despite varied clinical presentations, all patients presented with a consistent FDG PET pattern which may reflect an immune mechanism.", "corpus_id": 221458268, "venue": "European journal of neurology", "year": 2020, "author_names": [ "Cecile Delorme", "Olivier Paccoud", "Aurelie Kas", "Adele Hesters", "Stephanie Bombois", "Pauline Shambrook", "Augustin Boullet", "Diana Doukhi", "Loic Le Guennec", "Nagisa Godefroy", "Redwan Maatoug", "Philippe Fossati", "Bruno Millet", "Vincent Navarro", "Gaelle Bruneteau", "Sophie Demeret", "Valerie Pourcher" ], "n_citations": 15, "n_key_citations": 1, "score": 1 }, { "doc_id": "226228037", "title": "Neuroimaging findings of brain MRI and CT in patients with COVID 19: A systematic review and meta analysis", "abstract": "Purpose To comprehensively evaluate the incidences of abnormal neuroimaging findings in patients with COVID 19 via a systematic review and meta analysis. Method PubMed MEDLINE and EMBASE were searched for original articles reporting imaging findings of the brain in adult patients with COVID 19 between January 1, 2020 and October 9, 2020. Abnormal neuroimaging findings were categorized as (1) cerebral microhemorrhages, (2) acute spontaneous intracranial hemorrhage (ICH) (3) acute to subacute infarcts, and (4) encephalitis or encephalopathy. Pooled incidences of neuroimaging findings were assessed using random effects modeling. Between study heterogeneity was explored by using the kh2 statistic for pooled incidences and the inconsistency index I 2. The quality of the studies was evaluated using the Risk of Bias Assessment Tool for Nonrandomized Studies. Subgroup meta regression analysis was performed to identify potential sources of heterogeneity. Results Twenty one eligible papers, including 2125 patients, were identified. The pooled incidences of cerebral microhemorrhages, acute spontaneous ICH, acute/subacute infarcts, and encephalitis/encephalopathy were 6.9 (95 confidence interval [CI] 4.9 8.9 5.4 (95 CI, 3.1 7.6 24.0 (95 CI, 16.1 31.8 and 3.3 (95 CI, 1.9 4.7 respectively. Substantial heterogeneities were noted for all neuroimaging findings (I 2 87 97 Significant publication biases were present in the pooled incidences. In the subgroup meta regression analysis, patients with mean or median ages over 65 years showed a significantly lower incidence of encephalitis/encephalopathy (P 0.001) Furthermore, studies reported that patients in ICU had significantly higher incidences of cerebral microhemorrhages (P 0.001) and encephalitis/encephalopathy (P 0.001) Conclusions Considerable incidences of abnormal neuroimaging findings have been reported in patients with COVID 19. Acute to subacute cerebral infarction was the most prevalent neuroimaging finding.", "corpus_id": 226228037, "venue": "European Journal of Radiology", "year": 2020, "author_names": [ "Yangsean Choi", "Min Kyoung Lee" ], "n_citations": 11, "n_key_citations": 0, "score": 1 }, { "doc_id": "220459702", "title": "COVID 19 associated acute cerebral venous thrombosis: clinical, CT, MRI and EEG features", "abstract": "Dear editor, Many recent COVID 19 series have reported arterial or venous thrombosis (stroke, pulmonary embolism, etc. [1, 2] Here, we report a case of COVID 19 associated cerebral venous thrombosis (CVT) with dramatic evolution. On April 3, 2020, a 63 year old female presented to the emergency department because of aphasia and right hemiplegia. She had a 12 day history of fever, cough, and anosmia. Her husband was hospitalized in intensive care for confirmed COVID 19 acute respiratory distress syndrome (ARDS) Brain MRI showed a large left temporal brain hemorrhage and a suspicion of CVT confirmed on a venous brain CT scan and chest CT showed typical COVID 19 patchy ground glass opacities in both lungs (Fig. 1) The patient suddenly suffered a clinical status epilepticus and was administered i.v. lacosamide. Laboratory results showed hyperfibrinogenemia (7.2 g/L) and high ferritin levels (1427 mg/L) The nasopharyngeal and bronchial samples were negative for SARS CoV 2. Most common causes of genetic thrombotic disorders and antiphospholipid antibody syndrome were excluded. The patient was started on an intravenous curative dose of heparin anticoagulation. Electroencephalograpy (EEG) showed background theta activity unreactive to nociceptive stimulus, with pseudo periodic activity of a short period composed of slow di phasic waves irradiating towards the anterior regions (Fig. 2) Although subtle status epilepticus could not be excluded, the aspect was not typical and other successive EEG traces would confirm this non epileptic paroxystic pseudo periodic pattern. The patient eventually underwent surgical intracranial hematoma evacuation followed by decompressive craniectomy. On April 17th, brain CT scan revealed a new intracranial contralateral bleeding most likely following contralateral venous thrombosis despite being properly treated with intravenous heparin. Venous angiography showed persistent left thrombosis (Fig. 1) On April 25th, the patient was tested positive for SARS CoV 2 plasmatic IgG and IgM (ELISA test) On April 29th, the patient died following therapeutic limitation after ethical consultation group expertise. Although both samples were negative for SARS CoV2, we considered the patient infected by it, given the initial symptomatology, the confirmed infection in one relative, the specific aspect of the thoracic CT scan [3] and the positive serology. Furthermore, in this case, the thrombotic event occurred 12 days after the first", "corpus_id": 220459702, "venue": "Critical Care", "year": 2020, "author_names": [ "Fabian Roy-Gash", "Marine De Mesmay", "J M Devys", "Herve Vespignani", "Raphael Blanc", "Nicolas Engrand" ], "n_citations": 23, "n_key_citations": 1, "score": 1 }, { "doc_id": "210935891", "title": "Admission Perfusion CT for Classifying Early In Hospital Mortality of Patients With Severe Traumatic Brain Injury: A Pilot Study.", "abstract": "OBJECTIVE. The purposes of this study were to assess the feasibility and safety of perfusion CT of patients with severe traumatic brain injury (TBI) at hospital admission and to examine whether early in hospital mortality could be characterized with perfusion CT (PCT) The hypothesis was that PCT can be used to characterize brain death, when present, in patients with severe TBI at hospital admission. SUBJECTS AND METHODS. In this prospective cohort pilot study, PCT was performed on patients with severe TBI at first imaging workup at hospital admission. PCT images were processed at the end of the study and assessed for features of brain death. The PCT features were then compared with the clinical outcome of in hospital mortality. RESULTS. A total of 19 patients (13 men [68.4% six women [31.6% mean age, 36.4 years; median, 27.5 years) had a mean hospital stay longer than 1 month. No complications of PCT were found. In the first 48 hours after admission, four patients (21% died. Admission PCT changes suggesting brainstem death were sensitive (75% and specific (100% and had high positive (100% and negative (93.75% predictive value for correct classification early in hospital mortality. CONCLUSION. Admission PCT of patients with severe TBI was feasible and safe. Admission PCT findings helped in correctly classifying early in hospital mortality in the first 48 hours of hospital admission.", "corpus_id": 210935891, "venue": "AJR. American journal of roentgenology", "year": 2020, "author_names": [ "Jai Jai Shiva Shankar", "Robert Green", "Karim Virani", "Helen Wong", "Katie Eddy", "Robert Vandorpe" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "218538799", "title": "Early postmortem brain MRI findings in COVID 19 non survivors", "abstract": "Importance: The severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) is considered to have potential neuro invasiveness that might lead to acute brain disorders or contribute to respiratory distress in patients with coronavirus disease 2019 (COVID 19) Brain magnetic resonance imaging (MRI) data in COVID 19 patients are scarce due to difficulties to obtain such examination in infected unstable patients during the COVID 19 outbreak. Objective: To investigate the occurrence of structural brain abnormalities in non survivors of COVID 19 in a virtopsy framework. Design: Prospective, case series study with postmortem brain MRI obtained early <24h) after death. Setting: Monocentric study. Participants: From 31/03/2020 to 24/04/2020, consecutive decedents who fulfilled the following inclusion criteria were included: death <24 hours, SARS CoV 2 detection on nasopharyngeal swab specimen, chest computerized tomographic (CT) scan suggestive of COVID 19, absence of known focal brain lesion, and MRI compatibility. Main Outcome(s) and Measure(s) Signs of acute brain injury and MRI signal abnormalities along the olfactory tract and brainstem were searched independently by 3 neuroradiologists, then reviewed with neurologists and clinicians. Results: Among the 62 patients who died from COVID 19 during the inclusion period, 19 decedents fulfilled inclusion criteria. Subcortical micro and macro bleeds (2 decedents) cortico subcortical edematous changes evocative of posterior reversible encephalopathy syndrome (PRES, one decedent) and nonspecific deep white matter changes (one decedent) were observed. Asymmetric olfactory bulbs were found in 4 other decedents without downstream olfactory tract abnormalities. No brainstem MRI signal abnormality. Conclusions and Relevance: Postmortem brain MRI demonstrates hemorrhagic and PRES related brain lesions in non survivors of COVID 19 that might be triggered by the virus induced endothelial disturbances. SARS CoV 2 related olfactory impairment seems to be limited to olfactory bulbs. The absence of brainstem MRI abnormalities does not support a brain related contribution to respiratory distress in COVID 19.", "corpus_id": 218538799, "venue": "medRxiv", "year": 2020, "author_names": [ "Tim Coolen", "Valentina Lolli", "Niloufar Sadeghi", "Antonin Rovai", "Nicola Trotta", "Fabio Silvio Taccone", "Jacques Creteur", "Sophie Henrard", "Jean-Christophe Goffard", "Olivier Dewitte", "Gilles Naeije", "Serge Goldman", "Xavier De Tiege" ], "n_citations": 95, "n_key_citations": 3, "score": 0 }, { "doc_id": "218910185", "title": "COVID 19 related acute necrotizing encephalopathy with brain stem involvement in a patient with aplastic anemia", "abstract": "Objective To describe a novel case of coronavirus disease 2019 (COVID 19) associated acute necrotizing encephalopathy (ANE) in a patient with aplastic anemia where there was early brain stem predominant involvement. Methods Evaluation of cause, clinical symptoms, and treatment response. Results A 59 year old woman with a background of transfusion dependent aplastic anemia presented with seizures and reduced level of consciousness 10 days after the onset of subjective fever, cough, and headache. Nasopharyngeal swab testing for severe acute respiratory syndrome coronavirus (SARS CoV 2) was positive, and CT during admission demonstrated diffuse swelling of the brain stem. She required intubation and mechanical ventilation for airway protection, given her reduced level of consciousness. The patient's condition deteriorated, and MRI on day 6 demonstrated worsening brain stem swelling with symmetrical hemorrhagic lesions in the brain stem, amygdalae, putamina, and thalamic nuclei. Appearances were consistent with hemorrhagic ANE with early brain stem involvement. The patient showed no response to steroid therapy and died on the eighth day of admission. Conclusions COVID 19 may be associated with an acute severe encephalopathy and, in this case, was considered most likely to represent an immune mediated phenomenon. As the pandemic continues, we anticipate that the spectrum of neurologic presentation will broaden. It will be important to delineate the full clinical range of emergent COVID 19 related neurologic disease.", "corpus_id": 218910185, "venue": "Neurology: Neuroimmunology Neuroinflammation", "year": 2020, "author_names": [ "Luke Dixon", "James A Varley", "Anastassia Gontsarova", "Dermot Mallon", "Francesca Tona", "David A Muir", "Asad Luqmani", "Ieuan Harri Jenkins", "Richard S Nicholas", "Brynmor Jones", "Alex D Everitt" ], "n_citations": 106, "n_key_citations": 2, "score": 0 }, { "doc_id": "220980202", "title": "COVID 19 in the act: incidental 18F FDG PET/CT findings in asymptomatic patients and those with symptoms not primarily correlated with COVID 19 during the United Kingdom coronavirus lockdown", "abstract": "Purpose The emergence of the novel SARS CoV 2 pathogen and lethal COVID 19 disease pandemic poses major diagnostic challenges. The study aims to describe the spectrum and prevalence of thoracic and extrathoracic incidental findings in patients who have undergone 18F FDG PET/CT during the first 3 weeks of the COVID 19 UK lockdown. Methods This is a single centre retrospective controlled observational study. 18F FDG PET/CT scans n 160) acquired from 23/3/2020 to 9/4/2020 were retrospectively reviewed for incidental findings in the lungs and extrapulmonary sites (heart, nasal sinuses, parotid and salivary glands, colon, large vessels, renal cortex, brain, spleen and testes) A date matched control group n 205) of patients from 2019 was used for comparison. Results The total prevalence of suspicious findings was 26/160 (16.25% Fifteen patients presented with incidental findings in the lungs, while eleven patients had only non pulmonary incidental findings. There was a significant increase in the appearance of incidental 18F FDG PET/CT findings during the 2nd week (OR 3.8) and 3rd week (OR 7.6) in relation to the 1st week. There was a significant increase in the average maximum standardised uptake values (SUVmax) in the parotid/salivary glands of patients scanned during week 2 in relation to week 1 p 0.036) There was no significant difference in the prevalence of incidental findings compared to the control group, but the number of pulmonary vs. extrathoracic findings was different between the two populations. Conclusion The study provides a novel base of evidence to identify asymptomatic patients and those without symptoms strongly associated with COVID 19 with incidental 18F FDG PET/CT findings suspicious of SARS CoV 2 infection during the initial stages of the pandemic.", "corpus_id": 220980202, "venue": "European Journal of Nuclear Medicine and Molecular Imaging", "year": 2020, "author_names": [ "Richard Halsey", "Dimitrios Priftakis", "Strachan Mackenzie", "Simon Wan", "LauraMay Davis", "David M L Lilburn", "Andrew Thornton", "Nikolaos D Papathanasiou", "Gopinath Gnanasegaran", "Jamshed Bomanji" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "219725304", "title": "Early postmortem brain MRI findings in COVID 19 non survivors", "abstract": "Objectives The severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) is considered to have potential neuroinvasiveness that might lead to acute brain disorders or contribute to respiratory distress in patients with coronavirus disease 2019 (COVID 19) This study investigates the occurrence of structural brain abnormalities in non survivors of COVID 19 in a virtopsy framework. Methods In this prospective, monocentric, case series study, consecutive patients who fulfilled the following inclusion criteria benefited from an early postmortem structural brain MRI: death <24 hours, SARS CoV 2 detection on nasopharyngeal swab specimen, chest CT scan suggestive of COVID 19, absence of known focal brain lesion, and MRI compatibility. Results Among the 62 patients who died of COVID 19 from March 31, 2020, to April 24, 2020, at our institution, 19 decedents fulfilled the inclusion criteria. Parenchymal brain abnormalities were observed in 4 decedents: subcortical microbleeds and macrobleeds (2 decedents) cortico subcortical edematous changes evocative of posterior reversible encephalopathy syndrome (PRES; 1 decedent) and nonspecific deep white matter changes (1 decedent) Asymmetric olfactory bulbs were found in 4 other decedents without downstream olfactory tract abnormalities. No brainstem MRI signal abnormality was observed. Conclusions Postmortem brain MRI demonstrates hemorrhagic and PRES related brain lesions in non survivors of COVID 19. SARS CoV 2 related olfactory impairment seems to be limited to olfactory bulbs. Brainstem MRI findings do not support a brain related contribution to respiratory distress in COVID 19.", "corpus_id": 219725304, "venue": "Neurology", "year": 2020, "author_names": [ "Tim Coolen", "Valentina Lolli", "Niloufar Sadeghi", "Antonin Rovai", "Nicola Trotta", "Fabio Silvio Taccone", "Jacques Creteur", "Sophie Henrard", "Jean-Christophe Goffard", "Olivier Dewitte", "Gilles Naeije", "Serge Goldman", "Xavier De Tiege" ], "n_citations": 68, "n_key_citations": 2, "score": 0 }, { "doc_id": "218920559", "title": "Brain Imaging Use and Findings in COVID 19: A Single Academic Center Experience in the Epicenter of Disease in the United States", "abstract": "SUMMARY: Coronavirus disease 2019 (COVID 19) is a serious public health crisis and can have neurologic manifestations. This is a retrospective observational case series performed March 1 31, 2020, at New York University Langone Medical Center campuses. Clinical and imaging data were extracted, reviewed, and analyzed. Two hundred forty two patients with COVID 19 underwent CT or MRI of the brain within 2 weeks after the positive result of viral testing (mean age, 68.7 16.5 years; 150 men/92 women [62.0%/38.0% The 3 most common indications for imaging were altered mental status (42.1% syncope/fall (32.6% and focal neurologic deficit (12.4% The most common imaging findings were nonspecific white matter microangiopathy (134/55.4% chronic infarct (47/19.4% acute or subacute ischemic infarct (13/5.4% and acute hemorrhage (11/4.5% No patients imaged for altered mental status demonstrated acute ischemic infarct or acute hemorrhage. White matter microangiopathy was associated with higher 2 week mortality (P .001) Our data suggest that in the absence of a focal neurologic deficit, brain imaging in patients with early COVID 19 with altered mental status may not be revealing.", "corpus_id": 218920559, "venue": "American Journal of Neuroradiology", "year": 2020, "author_names": [ "Alireza Radmanesh", "Eytan Raz", "Elcin Zan", "Anna Derman", "Mark Kaminetzky" ], "n_citations": 60, "n_key_citations": 2, "score": 0 }, { "doc_id": "218503619", "title": "Letter to editor: Severe brain haemorrhage and concomitant COVID 19 Infection: A neurovascular complication of COVID 19", "abstract": "Beyond pulmonary infection, SARS CoV can cause dysfunction of multiple other organs and systems. Cardiovascular complications after COVID 19 have now been reported very often but the knowledge on neurovascular complications especially brain haemorrhage is scars. Here, we report the first case of COVID 19 positive patient presenting with a concomitant subarachnoid haemorrhage from an intracranial aneurysm. A 60 year old woman was admitted to our emergency department due to loss of consciousness. The patient was intubated due to reduced Glasgow Coma Scale (GCS) and respiratory insufficiency. A computer tomography (CT) with CT angiography revealed left frontal haemorrhage with ventricle bleeding (Fig. 1 D, E) from a ruptured pericallosal artery aneurysm around 5 mm in size (Fig. 1C, F) Oropharyngeal swab with PCR based testing was COVID 19 positive. A chest CT confirmed pneumonia predominantly of left lung (Fig. 1 A, B) On admission laboratory diagnostic showed elevated troponin 45 ng/ ml (normal 14 ng/ ml) and creatine kinase 4920 U/l (normal 145 U/l) Elevated CRP 1.1 mg /dl and leukocytes 14.2X1000 ml. Slightly elevated lactate dehydrogenase 360 U/l (normal 247 U/l) and elevated liver enzyme GOT 103 U/I (normal 31 U/l) The aneurysm was clipped microsurgically immediately after admission. After clipping of the aneurysm, due to positive COVID 19 PCR, the patient was transferred to a COVID 19 specialized ward for the treatment of infection and for the further intensive medical care. Cerebrospinal fluid (CSF) diagnostic revealed no viral genome in the CSF. Initially elevated troponin was normalized in the further course and no cardiac complication occurred. CT perfusion studies on day 3, 6, 9 and 12 showed no signs of cerebral vasospasm. Until last imaging on day 12 post ictus no delayed cerebral ischemia was detected. Patient still needs the treatment of pneumonia. Due to poor grade subarachnoid haemorrhage (WFNS grad 4) the patient is completely cured from COVID 19 and now transferred for rehabilitation. Involvement of other organs especially the brain and the cardiovascular system increase additional morbidity and mortality in COVID19 infected patients. The elderly patients with chronic medical conditions are particularly at risk to develop neurological complications including olfactory and gustatory disturbances (Vavougios, 2020) and in some cases an encephalitis (Ye et al. 2020) showing the possible accessibility of the virus to the brain and involvement of central nervous system (Duong et al. 2020) Moreover, COVID 19 infection can pose emotional and psychological stress in affected patients (Chew et al. 2020) This is the first case of COVID19 infection and concomitant aneurysmal subarachnoid haemorrhage from a ruptured pericallosal artery aneurysm. Whether COVID 19 infection led to aneurysm formation or rupture of an already existing aneurysm is still unexplored. There are however, multiple mechanisms, how an intracranial aneurysm can possibly lead to vascular wall instability during systemic inflammation due to viral infection. Viral infections including influenza A and COVID19 are known to induce cytokine storm (hypercytokinemia) leading to elevated systemic inflammation with high levels of IL 6, IL 1b and TNFa (Muhammad et al. 2011; Qin et al. 2020) Systemic inflammation is known to cause vascular injury including breakdown of collagen and permeability of blood brain barrier. Influenza A virus infection for example disturbs BBB through involvement of systemic elevated MMP 9 that breaks collagen present in the basal membrane of every arterial wall and a high collagen turnover in the systemic circulation is a sign of instability of existing intracranial aneurysm (Hackenberg et al. 2020) in patients with unruptured intracranial aneurysms. Moreover, COVID19 infection has been reported to increase systemic inflammation through dysbalance of T helper cells with exaggerated Th1 response (Huang et al. 2020) Similar kind of alterations in T helper cells populations have been found in patients with intracranial aneurysms (Zhang et al. 2016) Moreover, a disturbed balance of macrophages and other inflammatory markers has been found in the wall of ruptured intracranial aneurysms (Hasan et al. 2012) showing that inflammation is an important component of instable aneurysms. In our patient, we found elevated systemic leukoctyes as a sign of systemic inflammation that is probably due to both infection and SAH. We however could not analyse subpopulations of different leukocytes in systemic circulation that might be altered. Another possibility could be a direct invasion of virus in the brain as previously reported (Duong et al. 2020) However, we did not find virus genome in the cerebrospinal fluid and consequently it is highly unlikely that virus had any direct influence. Taken together, aneurysm instability partially due to systemic inflammation after virus infection might be one possible reason leading to SAH. This is however a single case report with concomitant SAH and COVID 19. Therefore, further epidemiological/clinical studies are needed to confirm the relationship and animal experiments in controlled conditions are required to find out exact mechanism.", "corpus_id": 218503619, "venue": "Brain, Behavior, and Immunity", "year": 2020, "author_names": [ "Sajjad Muhammad", "Athanasios K Petridis", "Jan Frederick Cornelius", "Daniel Hanggi" ], "n_citations": 46, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "17778370", "title": "Internal resistance matching for parallel connected lithium ion cells and impacts on battery pack cycle life", "abstract": "When assembling lithium ion cells into functional battery packs, it is common to connect multiple cells in parallel. Here we present experimental and modeling results demonstrating that, when lithium ion cells are connected in parallel and cycled at high rate, matching of internal resistance is important in ensuring long cycle life of the battery pack. Specifically, a 20% difference in cell internal resistance between two cells cycled in parallel can lead to approximately 40% reduction in cycle life when compared to two cells parallel connected with very similar internal resistance. We show that an internal resistance mismatch leads to high current into each cell during part of the charging cycle. Since capacity fading is strongly dependent on temperature, and hence on charging rate when this rate is sufficiently high, the high current leads to substantially accelerated capacity fade in both cells. A model, based on the formation of a solid electrolyte interphase, is able to explain the dependence of lifetime on resistance mismatch, and also identifies the importance of random sudden capacity losses.", "corpus_id": 17778370, "venue": "", "year": 2014, "author_names": [ "Radu Gogoana", "Matthew B Pinson", "Martin Z Bazant", "Sanjay E Sarma" ], "n_citations": 134, "n_key_citations": 1, "score": 1 }, { "doc_id": "202565190", "title": "Lithium ion Battery Thermal Safety by Early Internal Detection, Prediction and Prevention", "abstract": "Temperature rise in Lithium ion batteries (LIBs) due to solid electrolyte interfaces breakdown, uncontrollable exothermic reactions in electrodes and Joule heating can result in the catastrophic failures such as thermal runaway, which is calling for reliable real time electrode temperature monitoring. Here, we present a customized LIB setup developed for early detection of electrode temperature rise during simulated thermal runaway tests incorporating a modern additive manufacturing supported resistance temperature detector (RTD) An advanced RTD is embedded in a 3D printed polymeric substrate and placed behind the electrode current collector of CR2032 coin cells that can sustain harsh electrochemical operational environments (acidic electrolyte without Redox, short circuiting, leakage etc. without participating in electrochemical reactions. The internal RTD measured an average 5.8 degC higher temperature inside the cells than the external RTD with almost 10 times faster detection ability, prohibiting thermal runaway events without interfering in the LIBs' operation. A temperature prediction model is developed to forecast battery surface temperature rise stemming from measured internal and external RTD temperature signatures.", "corpus_id": 202565190, "venue": "Scientific Reports", "year": 2019, "author_names": [ "Bing Li", "Mihit H Parekh", "Ryan A Adams", "Thomas E Adams", "Corey T Love", "Vilas G Pol", "V Tomar" ], "n_citations": 13, "n_key_citations": 0, "score": 0 }, { "doc_id": "217489733", "title": "A kind of high performance all solid lithium ion battery and preparation method thereof", "abstract": "The present invention discloses a kind of high performance all solid lithium ion battery and preparation method thereof, the all solid lithium ion battery preparation method of the present invention solves the problems, such as to contact firmly between electrolyte and electrode interface, improve the activation degree of electrolyte and electrode material, reduce activation polarization, it will be apparent that reduce the internal resistance of cell;The polymer dielectric of lithium superionic conductors modification improves the transmission rate of lithium ion through whole all solid lithium ion battery system, improves the rate charge discharge ability of all solid lithium ion battery;It is binding agent that positive and negative plate coating, which has used the high molecular polymer same with electrolyte phase, shortens the diffusion road warp of lithium ion, and the capacity for being conducive to active material plays, and significantly improves battery specific energy, up to 763Wh/Kg;High molecular polymer has relaxed the uneven discharge and recharge of negative metal lithium at the same time, it is suppressed that the growth of lithium crystallization, improves service life, can be recycled more than 1000 times.", "corpus_id": 217489733, "venue": "", "year": 2016, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "116332357", "title": "The Structure Optimization of Lithium ion Battery Pack Based on Fluid solid Conjugate Thermodynamic Analysis", "abstract": "Abstract To effectively improve the discharging efficiency and the cycle period, the thermodynamic analysis and the heat dissipation structure optimization are conducted on the lithium iron battery pack. The internal resistance characteristics of the battery are experimented, and the change of internal resistance at different discharge rate and ambient temperature is measured. The three dimensional thermal effect model of the battery is established, and the simulation analysis of thermoelectric coupling is carried out by using MSMD model in FLUENT. The simulation results are compared with the experimental results to verify the validity of the model. By the Ansys Workbench software, the three dimensional model are established based on the conjugate thermal transfer phenomenon. Based on the fluid solid conjugate heat transfer mechanism, the influence of the airflow channel spacing and air inlet angle on the temperature distribution of the battery pack is analyzed, thus optimizing the heat dissipation structure. By studying the effect of the air flow rate and its temperature on the temperature distribution of the battery pack, the optimized heat dissipation structure can achieve the best performance.", "corpus_id": 116332357, "venue": "", "year": 2018, "author_names": [ "Min Ye", "Yining Xu", "Yangfang Huangfu" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "164997823", "title": "The polarization characteristics of lithium ion batteries under cyclic charge and discharge", "abstract": "A high fidelity electrochemical thermal coupling was established to study the polarization characteristics of power lithium ion battery under cycle charge and discharge. The lithium manganese oxide lithium ion battery was selected to study under cyclic conditions including polarization voltage characteristics, and the polarization internal resistance characteristics of the power lithium ion battery under cyclic conditions were analyzed via the Hybrid Pulse Power Test (HPPC) The results show that for different working conditions, the polarization voltage difference of the power lithium ion battery is mainly affected by the change in polarization internal resistance. A higher charge discharge rate, lower ambient temperatures, and more cycles lead to a greater polarization internal resistance of the battery. Meanwhile, the ohmic polarization internal resistance and the concentration polarization internal resistance of the power lithium ion battery both exhibit different characteristics under different working condition. In addition, the internal resistance of the ohmic polarization is not affected by the change in current, but it is significantly affected by the change in ambient temperature. Therefore, the ohmic polarization voltage reacts rapidly with changes in the charge/discharge state of the battery; the change of the internal resistance of the concentration polarization is relatively slow.", "corpus_id": 164997823, "venue": "Journal of Solid State Electrochemistry", "year": 2019, "author_names": [ "Changsheng Qiu", "Gang He", "Wankai Shi", "Mengjie Zou", "Chang Liu" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "102714303", "title": "Relationship between the crystal structures of LiMn1.5Ni0.5O4 and LiMn1.5Ni0.45Fe0.05O4 and their internal resistances as cathode materials for lithium ion batteries", "abstract": "It has been reported that the partial substitution of Fe for Ni in LiMn1.5Ni0.5O4 improves the rate capability of batteries wherein it is used as a cathode material. To understand the mechanism of this improvement, LiMn1.5Ni0.5O4 and LiMn1.5Ni0.45Fe0.05O4 samples were prepared to compare their crystal structures and the internal resistances of batteries fabricated using them. Electrochemical measurements showed that resistance of LiMn1.5Ni0.45Fe0.05O4 to the diffusion of Li+ ions into bulk is lower than that for LiMn1.5Ni0.5O4. The crystal structures of LiMn1.5Ni0.5O4 and LiMn1.5Ni0.45Fe0.05O4 were examined by neutron diffraction and transmission electron microscopy. The mass percentage of the ordered P4332 phase in LiMn1.5Ni0.45Fe0.05O4 was found to be smaller than that in LiMn1.5Ni0.5O4, and the coexistence of an ordered P4332 phase and a disordered Fd3 \\overline{3} $m phase leads to the formation of boundaries in the primary particles of the samples. From these results, it was proposed that the reason for the internal resistance improvement was that the boundaries between the P4332 and Fd3 \\overline{3} $m phase impeded the diffusion of Li+ ions. Therefore, LiMn1.5Ni0.45Fe0.05O4 exhibited lower internal resistance because it contained a lower amount of P4332 phase and consequently, a lower occurrence of boundaries.", "corpus_id": 102714303, "venue": "Journal of Solid State Electrochemistry", "year": 2017, "author_names": [ "Ryosuke Okamoto", "Kazuhide Hayashi", "Satoshi Matsumoto", "Naomi Suzuki", "Masami Terauchi" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "102147593", "title": "Assessment of All Solid State Lithium Ion Batteries", "abstract": "Abstract All solid state lithium ion batteries (ASSBs) are considered as next generation energy storage systems. A model might be very useful, which describes all contributions to the internal cell resistance, enables an optimization of the cell design, and calculates the performance of an open choice of cell architectures. A newly developed one dimensional model for ASSBs is presented, based on a design concept which employs the use of composite electrodes. The internal cell resistance is calculated by linking two phase transmission line models representing the composite electrodes with an ohmic resistance representing the solid electrolyte (separator) Thereby, electrical parameters, i.e. ionic and electronic conductivity, electrochemical parameters, i.e. charge transfer resistance at interfaces and lithium solid state diffusion, and microstructure parameters, i.e. electrode thickness, particle size, interface area, phase composition and tortuosity, are considered as the most important material and design parameters. Subsequently, discharge curves are simulated, and energy and power density characteristics of all solid state cell architectures are calculated. These model calculations are discussed and compared with experimental data from literature for a high power LiCoO2 Li10GeP2S12/Li10GeP2S12/Li4Ti5O12 Li10GeP2S12 cell.", "corpus_id": 102147593, "venue": "", "year": 2016, "author_names": [ "Philipp Braun" ], "n_citations": 23, "n_key_citations": 0, "score": 1 }, { "doc_id": "204296584", "title": "Mg2+ W6+ co doped Li2ZnTi3O8 anode with outstanding room, high and low temperature electrochemical performance for lithium ion batteries", "abstract": "Li2ZnTi3O8 (LZTO) co doped with Mg2+ W6+ (LM6ZTW3O) has been successfully prepared by a facile one step solid state route. A co doping strategy improves ionic conductivity, reduces transfer resistance, internal resistance and polarization, stabilizes the structure of LZTO and enables the LM6ZTW3O electrode to have a good electrical contact. The co doped LZTO exhibits excellent electrochemical performance at room, high and low temperatures. At 1 A g 1, 94.7% of the capacity for the 2nd cycle is kept at room temperature after 400 cycles. At 2 A g 1, there is no capacity decay at the 300th cycle at room temperature. Even at 3 A g 1, 177.9 mA h g 1 is kept at the 120th cycle. At 55 degC, 88.3% of the capacity for the 2nd cycle is obtained at 1 A g 1. At 0 degC, 192.9 mA h g 1 is still obtained at 0.6 A g 1 for the 60th cycle, and there is no capacity decay for 200 and 300 cycles at 0.2 and 0.5 A g 1, respectively.", "corpus_id": 204296584, "venue": "", "year": 2019, "author_names": [ "Ziye Shen", "Zhongxue Zhang", "Song Wang", "Zenan Liu", "Lijuan Wang", "Yanfeng Bi", "Zhaohui Meng" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "198392958", "title": "Preparation and Electrochemical Performance of Mg2 Doped Li4Ti5O12 Anode Materials for Lithium Ion Batteries", "abstract": "Spinel Li4Ti5O12 (LTO) doped with Mg2+ was synthesized by solid phase reaction method. The Mg2+ doping quantity was 3% 6% 9% and 12% respectively. The structure and electrochemical performance of the prepared LTO composites were investigated by X ray diffraction (XRD) Scanning Electron Microscopy (SEM) Electrochemical Impedance Spectroscopy (EIS) and galvanostatic charge discharge tests. It was found that the doped Mg ion did not change the structure of Li4Ti5O12, and it was evenly distributed around Li4Ti5O12. When Mg2+ doping quantity increased from 3% to 12% the internal resistance and charge transfer resistance of the composite both decreased. The first discharge specific capacity of 6% Mg2+ doped LTO composite was 168 mAh/g, which was close to the theoretical capacity of pure lithium titanate (175 mAh/g) and the capacity retention rate was 98% after 100 cycles.", "corpus_id": 198392958, "venue": "Materials Science Forum", "year": 2019, "author_names": [ "Ming Xia Wang", "Xue Ming Zhang", "Li Li Cheng", "Xue Wang", "Qiang Zhang" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "140522926", "title": "High performance all solid state lithium ion battery and preparation method thereof", "abstract": "The invention discloses a high performance all solid state lithium ion battery and a preparation method thereof. The preparation method of the all solid state lithium ion battery solves the problem of hard contact between an electrolyte and an electrode interface, improves the activation degree of the electrolyte and an electrode material, reduces electrochemical polarization and obviously reduces the internal resistance of the battery. A lithium superionic conductor modified polymer electrolyte penetrates through an overall all solid state lithium ion battery system, improves the transmission rate of lithium ions and improves the high rate charge discharge capability of the all solid state lithium ion battery. A high molecular polymer which is the same as the electrolyte is utilized for coating a positive plate and a negative plate as a binder, so that the diffusion path of the lithium ions is shortened; capacity development of active materials is facilitated; the specific energy of the battery is significantly improved and reaches 763Wh/Kg; meanwhile, uneven charging and discharging of a negative lithium metal are alleviated by the high molecular polymer; growth of lithium crystal is inhibited; the service lifetime is prolonged; and the high performance all solid state lithium ion battery can be recycled over 1,000 times.", "corpus_id": 140522926, "venue": "", "year": 2016, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "219447873", "title": "Bilinear Graph Neural Network with Neighbor Interactions", "abstract": "Graph Neural Network (GNN) is a powerful model to learn representations and make predictions on graph data. Existing efforts on GNN have largely defined the graph convolution as a weighted sum of the features of the connected nodes to form the representation of the target node. Nevertheless, the operation of weighted sum assumes the neighbor nodes are independent of each other, and ignores the possible interactions between them. When such interactions exist, such as the co occurrence of two neighbor nodes is a strong signal of the target node's characteristics, existing GNN models may fail to capture the signal. In this work, we argue the importance of modeling the interactions between neighbor nodes in GNN. We propose a new graph convolution operator, which augments the weighted sum with pairwise interactions of the representations of neighbor nodes. We term this framework as Bilinear Graph Neural Network (BGNN) which improves GNN representation ability with bilinear interactions between neighbor nodes. In particular, we specify two BGNN models named BGCN and BGAT, based on the well known GCN and GAT, respectively. Empirical results on three public benchmarks of semi supervised node classification verify the effectiveness of BGNN BGCN (BGAT) outperforms GCN (GAT) by 1.6% (1.5% in classification accuracy.Codes are available at: this https URL.", "corpus_id": 219447873, "venue": "IJCAI", "year": 2020, "author_names": [ "Hong-Min Zhu", "Fuli Feng", "Xiangnan He", "Xiang Wang", "Yan Li", "Kai Zheng", "Yongdong Zhang" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "214764774", "title": "Interpretable Nearest Neighbor Queries for Tree Structured Data in Vector Databases of Graph Neural Network Embeddings", "abstract": "We propose a method for interpreting similarity computations between neural embeddings of trees. We showcase our approach in a search engine for mathematical equations crawled from arxiv.org. The equations are encoded as MathML, a XML file format that describes math in tree structures. These trees are processed by a graph convolutional neural network to obtain fixedsize low dimensional and dense embedding vectors for each tree. Search is performed by performing nearest neighbor query in the set of embeddings. However just by the embeddings it is difficult to judge how the similarity came about. We propose two different approaches to highlight parts of the equation that are important for the similarity, one based on the forward computation of the neural network and one based on the gradient in the backwardcomputation. In a qualitative study on math retrieval we show the advantages of both methods.", "corpus_id": 214764774, "venue": "EDBT/ICDT Workshops", "year": 2020, "author_names": [ "Lukas Pfahler", "Janko Richter" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "211031947", "title": "MAGNN: Metapath Aggregated Graph Neural Network for Heterogeneous Graph Embedding", "abstract": "A large number of real world graphs or networks are inherently heterogeneous, involving a diversity of node types and relation types. Heterogeneous graph embedding is to embed rich structural and semantic information of a heterogeneous graph into low dimensional node representations. Existing models usually define multiple metapaths in a heterogeneous graph to capture the composite relations and guide neighbor selection. However, these models either omit node content features, discard intermediate nodes along the metapath, or only consider one metapath. To address these three limitations, we propose a new model named Metapath Aggregated Graph Neural Network (MAGNN) to boost the final performance. Specifically, MAGNN employs three major components, i.e. the node content transformation to encapsulate input node attributes, the intra metapath aggregation to incorporate intermediate semantic nodes, and the inter metapath aggregation to combine messages from multiple metapaths. Extensive experiments on three real world heterogeneous graph datasets for node classification, node clustering, and link prediction show that MAGNN achieves more accurate prediction results than state of the art baselines.", "corpus_id": 211031947, "venue": "WWW", "year": 2020, "author_names": [ "Xinyu Fu", "Jiani Zhang", "Ziqiao Meng", "Irwin King" ], "n_citations": 87, "n_key_citations": 29, "score": 0 }, { "doc_id": "215839212", "title": "Continuous Time Link Prediction via Temporal Dependent Graph Neural Network", "abstract": "Recently, graph neural networks (GNNs) have been shown to be an effective tool for learning the node representations of the networks and have achieved good performance on the semi supervised node classification task. However, most existing GNNs methods fail to take networks' temporal information into account, therefore, cannot be well applied to dynamic network applications such as the continuous time link prediction task. To address this problem, we propose a Temporal Dependent Graph Neural Network (TDGNN) a simple yet effective dynamic network representation learning framework which incorporates the network temporal information into GNNs. TDGNN introduces a novel Temporal Aggregator (TDAgg) to aggregate the neighbor nodes' features and edges' temporal information to obtain the target node representations. Specifically, it assigns the neighbor nodes aggregation weights using an exponential distribution to bias different edges' temporal information. The performance of the proposed method has been validated on six real world dynamic network datasets for the continuous time link prediction task. The experimental results show that the proposed method outperforms several state of the art baselines.", "corpus_id": 215839212, "venue": "WWW", "year": 2020, "author_names": [ "Liang Qu", "Huaisheng Zhu", "Qiqi Duan", "Yuhui Shi" ], "n_citations": 11, "n_key_citations": 1, "score": 0 }, { "doc_id": "219324037", "title": "Rumor detection based on propagation graph neural network with attention mechanism", "abstract": "Abstract Rumors on social media have always been an important issue that seriously endangers social security. Researches on timely and effective detection of rumors have aroused lots of interest in both academia and industry. At present, most existing methods identify rumors based solely on the linguistic information without considering the temporal dynamics and propagation patterns. In this work, we aim to solve rumor detection task under the framework of representation learning. We first propose a novel way to construct the propagation graph by following the propagation structure (who replies to whom) of posts on Twitter. Then we propose a gated graph neural network based algorithm called PGNN, which can generate powerful representations for each node in the propagation graph. The proposed PGNN algorithm repeatedly updates node representations by exchanging information between the neighbor nodes via relation paths within a limited time steps. On this basis, we propose two models, namely GLO PGNN (rumor detection model based on the global embedding with propagation graph neural network) and ENS PGNN (rumor detection model based on the ensemble learning with propagation graph neural network) They respectively adopt different classification strategies for rumor detection task, and further improve the performance by including attention mechanism to dynamically adjust the weight of each node in the propagation graph. Experiments on a real world Twitter dataset demonstrate that our proposed models achieve much better performance than state of the art methods both on the rumor detection task and early detection task.", "corpus_id": 219324037, "venue": "Expert Systems with Applications", "year": 2020, "author_names": [ "Zhiyuan Wu", "Dechang Pi", "Junfu Chen", "Meng Xie", "Jianjun Cao" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "224271904", "title": "Graph Neural Network for Tag Ranking in Tag enhanced Video Recommendation", "abstract": "In tag enhanced video recommendation systems, videos are attached with some tags that highlight the contents of videos from different aspects. Tag ranking in such recommendation systems provides personalized tag lists for videos from their tag candidates. A better tag ranking model could attract users to click more tags, enter their corresponding tag channels, and watch more tag specific videos, which improves both tag click rate and video watching time. However, most conventional tag ranking models merely concentrate on tag video relevance or tag related behaviors, ignoring the rich information in video related behaviors. We should consider user preferences on both tags and videos. In this paper, we propose a novel Graph neural network based tag ranking (GraphTR) framework on a huge heterogeneous network with video, tag, user and media. We design a novel graph neural network that combines multi field transformer, GraphSAGE and neural FM layers in node aggregation. We also propose a neighbor similarity based loss to encode various user preferences into heterogeneous node representations. In experiments, we conduct both offline and online evaluations on a real world video recommendation system in WeChat Top Stories. The significant improvements in both video and tag related metrics confirm the effectiveness and robustness in real world tag enhanced video recommendation. Currently, GraphTR has been deployed on WeChat Top Stories for more than six months. The source codes are in https:/github.com/lqfarmer/GraphTR.", "corpus_id": 224271904, "venue": "CIKM", "year": 2020, "author_names": [ "Qi Liu", "Ruobing Xie", "Lei Chen", "Shukai Liu", "Ke Tu", "Peng Cui", "Bo Zhang", "Leyu Lin" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "229152345", "title": "Understanding Image Retrieval Re Ranking: A Graph Neural Network Perspective", "abstract": "The re ranking approach leverages high confidence retrieved samples to refine retrieval results, which have been widely adopted as a post processing tool for image retrieval tasks. However, we notice one main flaw of re ranking, i.e. high computational complexity, which leads to an unaffordable time cost for real world applications. In this paper, we revisit re ranking and demonstrate that re ranking can be reformulated as a high parallelism Graph Neural Network (GNN) function. In particular, we divide the conventional re ranking process into two phases, i.e. retrieving high quality gallery samples and updating features. We argue that the first phase equals building the k nearest neighbor graph, while the second phase can be viewed as spreading the message within the graph. In practice, GNN only needs to concern vertices with the connected edges. Since the graph is sparse, we can efficiently update the vertex features. On the Market 1501 dataset, we accelerate the re ranking processing from 89.2s to 9.4ms with one K40m GPU, facilitating the real time post processing. Similarly, we observe that our method achieves comparable or even better retrieval results on the other four image retrieval benchmarks, i.e. VeRi 776, Oxford 5k, Paris 6k and University 1652, with limited time cost. Our code is publicly available.", "corpus_id": 229152345, "venue": "ArXiv", "year": 2020, "author_names": [ "Xuanmeng Zhang", "Minyue Jiang", "Zhedong Zheng", "Xiaoping Tan", "Errui Ding", "Yan-qi Yang" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "211069600", "title": "Bilinear Graph Neural Network with Node Interactions", "abstract": "Graph Neural Network (GNN) is a powerful model to learn representations and make predictions on graph data. Existing efforts on GNN have largely defined the graph convolution as a weighted sum of the features of the connected nodes to form the representation of the target node. Nevertheless, the operation of weighted sum assumes the neighbor nodes are independent of each other, and ignores the possible interactions between them. When such interactions exist, such as the co occurrence of two neighbor nodes is a strong signal of the target node's characteristics, existing GNN models may fail to capture the signal. In this work, we argue the importance of modeling the interactions between neighbor nodes in GNN. We propose a new graph convolution operator, which augments the weighted sum with pairwise interactions of the representations of neighbor nodes. We term this framework as Bilinear Graph Neural Network (BGNN) which improves GNN representation ability with bilinear interactions between neighbor nodes. In particular, we specify two BGNN models named BGCN and BGAT, based on the well known GCN and GAT, respectively. Empirical results on three public benchmarks of semisupervised node classification verify the effectiveness of BGNN BGCN (BGAT) outperforms GCN (GAT) by 1.6% (1.5% in classification accuracy. Codes are available at: https:/github.com/zhuhm1996/bgnn.", "corpus_id": 211069600, "venue": "ArXiv", "year": 2020, "author_names": [ "Hong-Min Zhu", "Fuli Feng", "Xiangnan He", "Xiang Wang", "Yaliang Li", "Kai Zheng", "Yongdong Zhang" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "227075868", "title": "A Motif Based Graph Neural Network to Reciprocal Recommendation for Online Dating", "abstract": "Recommender systems have been widely adopted in various large scale Web applications. Among these applications, online dating application has attracted more and more research efforts. Essentially, online dating data is a bipartite graph with sparse reciprocal links. Reciprocal recommendations consider bi directional interests of service and recommended users, not merely the service user's interest. This paper proposes a motif based graph neural network (MotifGNN) for online dating recommendation task. We first define seven kinds of motifs and then design a motif based random walk algorithm to sample neighbor users to learn feature embeddings of each service user. At last, these learned feature embeddings are used to predict whether a reciprocal link exists or not. Experiments are evaluated on two real world online dating datasets. The promising results demonstrate the superiority of the proposed approach against a number of state of the art approaches.", "corpus_id": 227075868, "venue": "ICONIP", "year": 2020, "author_names": [ "Linhao Luo", "Kai Liu", "Dan Peng", "Yaolin Ying", "Xiaofeng Zhang" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "221913757", "title": "A Time Aware Graph Neural Network for Session Based Recommendation", "abstract": "Recently, Graph Neural Networks (GNNs) have attracted increasing attention in the field of session based recommendation, due to its strong ability on capturing complex interactive transitions within sessions. However, existing GNN based models either lack the use of user's long term historical behaviors or fail to address the impact of collaborative filtering information from neighbor users on the current session, which are both important to boost recommendation. In addition, previous work only focuses on the sequential relations of interactions while neglects the time interval information which can imply the correlations between different interactions. To tackle these problems, we propose a Time Aware Graph Neural Network (TA GNN) for session based recommendation. Specifically, we first construct a user behavior graph by linking the interacted items of the same user according to their corresponding time order. A time aware generator is designed to model the correlations between different nodes of the user behavior graph by considering the time interval information. Moreover, items from the neighbor sessions of the current session are selected to build a neighborhood graph. Then the two graphs are respectively processed by two different modules to learn the representation of the current session, which is applied to produce the final recommendation list. Comprehensive experiments show that our model outperforms state of the art baselines on three real world datastes. We also investigate the performance of TA GNN on different numbers of historical interactions and on different session length, finding that our model presents consistently advantages under different conditions.", "corpus_id": 221913757, "venue": "IEEE Access", "year": 2020, "author_names": [ "Yupu Guo", "Yanxiang Ling", "Honghui Chen" ], "n_citations": 1, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "19100855", "title": "Nerve growth factor and brain derived neurotrophic factor increase neurotransmitter release in the rat visual cortex", "abstract": "A number of experiments have shown that neurotrophins are involved in the development and plasticity of the visual cortex (Bonhoeffer, T. Curr. Op. Neurobiol. 6, 119 1996) A possible mechanism underlying these effects is the neurotrophin modulation of synaptic transmission. We investigated whether nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF) can modulate the release of neurotransmitter in the rat visual cortex at the peak of the critical period for plasticity (P23) The release of glutamate, acetylcholine and gamma aminobutyric acid (GABA) from visual cortical synaptosomes was analysed in continuous perfusion conditions. We found that NGF enhances the depolarization evoked release of glutamate 90% and acetylcholine 35% but not that of GABA. By contrast, BDNF enhances the depolarization evoked release of all three neurotransmitters investigated 30% BDNF and NGF were ineffective on basal release of neurotransmitters. The effect of NGF was not blocked by cholinergic antagonists atropine and mecamylamine. NGF and BDNF potentiation of transmitter release was strongly but not completely blocked by K252a, a tyrosine kinase inhibitor. The role of TrkA and p75NTR receptors was investigated in NGF induced potentiation of glutamate release. Block of NGF binding to p75NTR using specific blocking antibodies (REX IgG) slightly but significantly reduced the effect of NGF. Activation of TrkA in isolation by RTA IgG, an antibody that specifically activates TrkA, was less effective than activation of both receptors by NGF. These results show that neurotrophin action on neurotransmitter release was mostly mediated by Trk receptors with p75NTR having a little but significant positive role. Antigen blot analysis showed the presence of TrkA, TrkB and p75NTR receptors in the visual cortex.", "corpus_id": 19100855, "venue": "The European journal of neuroscience", "year": 1998, "author_names": [ "Roberta Sala", "Alessandro Viegi", "Francesco Mattia Rossi", "Tommaso Pizzorusso", "Giambattista Bonanno", "Maurizio Raiteri", "Lamberto Maffei" ], "n_citations": 126, "n_key_citations": 8, "score": 1 }, { "doc_id": "3758206", "title": "Topographic Organization of Cholinergic Innervation From the Basal Forebrain to the Visual Cortex in the Rat", "abstract": "Acetylcholine is an important neurotransmitter for the regulation of visual attention, plasticity, and perceptual learning. It is released in the visual cortex predominantly by cholinergic projections from the basal forebrain, where stimulation may produce potentiation of visual processes. However, little is known about the fine organization of these corticopetal projections, such as whether basal forebrain neurons projecting to the primary and secondary visual cortical areas (V1 and V2, respectively) are organized retinotopically. The aim of this study was to map these basal forebrain V1/V2 projections. Microinjections of the fluorescent retrograde tracer cholera toxin b fragment in different sites within V1 and V2 in Long Evans rats were performed. Retrogradely labeled cell bodies in the horizontal and vertical limbs of the diagonal band of Broca (HDB and VDB, respectively) nucleus basalis magnocellularis, and substantia innominata (SI) were mapped ex vivo with a computer assisted microscope stage controlled by stereological software. Choline acetyltranferase immunohistochemistry was used to identify cholinergic cells. Our results showed a predominance of cholinergic projections coming from the HDB. These projections were not retinotopically organized but projections to V1 arised from neurons located in the anterior HDB/SI whereas projections to V2 arised from neurons located throughout the whole extent of HDB/SI. The absence of a clear topography of these projections suggests that BF activation can stimulate visual cortices broadly.", "corpus_id": 3758206, "venue": "Front. Neural Circuits", "year": 2018, "author_names": [ "Frederic Huppe-Gourgues", "Karim Jegouic", "Elvire Vaucher" ], "n_citations": 15, "n_key_citations": 0, "score": 1 }, { "doc_id": "8812413", "title": "Three distinct families of GABAergic neurons in rat visual cortex.", "abstract": "In the cortex inhibition is mediated predominantly by GABAergic interneurons. Although all of these neurons use the same neurotransmitter, studies in the rat frontal cortex have shown that they are molecularly and physiologically diverse. It is not known whether similar subgroups of GABAergic neurons exist in primary visual cortex and how these different inhibitory neurons are inserted into specific cortical circuits. We have used immunostaining with antibodies against gamma aminobutyric acid (GABA) parvalbumin (PV) calretinin (CR) somatostatin (SOM) calbindin (CB) and nitric oxide synthase (NOS) to probe for colocalization of known markers of GABAergic interneurons. The results show that the majority of PV (100% SOM (89.8% and CR (93.9% staining neurons are GABA positive. PV immunoreactive neurons constitute a distinct group that show no overlap with CR, SOM and NOS expressing cells and only a minor overlap (5.3% with CB. PV immunoreactive cells account for 50.8% of GABAergic neurons. A second group of SOM expressing neurons accounts for 16.9% of GABAergic cells. None of these cells colocalize PV or CR, but 1.7% of SOM neurons stain for NOS and 86.3% show CB immunoreactivity. The third distinct group of CR expressing cells accounts for 17.0% of GABAergic neurons. All of these are PV, CB, SOM and NOS negative. CB expressing neurons represent a heterogeneous group that includes GABAergic and non GABAergic cells. Our findings indicate that GABAergic neurons in rat area 17 are organized in at least three separate families that can be identified by the expression of PV, CR and SOM. These cells account for 84.9% of GABAergic neurons. These results extend previous observations in rat frontal agranular cortex and suggest that in visual cortex the inhibitory network is composed of similar cell types.", "corpus_id": 8812413, "venue": "Cerebral cortex", "year": 1997, "author_names": [ "Y A Gonchar", "Andreas Burkhalter" ], "n_citations": 472, "n_key_citations": 64, "score": 1 }, { "doc_id": "43511846", "title": "Glycine modulates synaptic NR2A and NR2B containing NMDA receptor mediated responses in the rat visual cortex", "abstract": "In the central nervous system, activation of N methyl d aspartate receptor (NMDA R) glycine binding sites is a prerequisite for activation of synaptic NMDA Rs by the excitatory neurotransmitter glutamate. Here we used patch clamp recordings in transverse slice preparations to study whether the glycine binding site of the NMDA R saturates and to determine their subunit composition in layer II/III pyramidal neurons of the rat visual cortex. We found that the NMDA R mediated component of miniature excitatory postsynaptic currents (mEPSCs) could be potentiated by exogenously applied glycine. Similar results were obtained by exogenously applied d serine. A specific antagonist for NR2B NMDA Rs, Ro 25 6981, reduced NMDA R mediated mEPSCs, and glycine with Ro 25 6981 enhanced NMDA R mediated mEPSCs. Moreover, Zn2+ an NR2A NMDA R antagonist, also reduced NMDA mediated mEPSCs and glycine with Zn2+ enhanced the NMDA mediated mEPSCs. Our data indicate that the glycine binding site of synaptic NR2A containing and NR2B containing NMDA Rs does not saturate and that glycine may act as a modulator of NMDA R mediated transmission in layer II/III pyramidal neurons of the rat visual cortex.", "corpus_id": 43511846, "venue": "Brain Research", "year": 2008, "author_names": [ "Yan-hai Li", "Tai-zhen Han" ], "n_citations": 12, "n_key_citations": 1, "score": 0 }, { "doc_id": "14152621", "title": "Glycine binding sites of presynaptic NMDA receptors may tonically regulate glutamate release in the rat visual cortex.", "abstract": "In the CNS, activation of N methyl D aspartate receptor (NMDA R) glycine binding sites is a prerequisite for activation of postsynaptic NMDA Rs by the excitatory neurotransmitter glutamate. Here we provide electrophysiological evidence that the glycine binding sites of presynaptic NMDA Rs regulate glutamate release in layer II/III pyramidal neurons of the rat visual cortex. Specifically, our results reveal that the frequency of miniature excitatory postsynaptic currents is significantly reduced by 7 chloro kynurenic acid (7 Cl KYNA) a NMDA R glycine binding site antagonist, and glycine or D serine reverses this effect. Similar results are obtained when the open channel NMDA receptor blocker, MK 801, is included in the recording pipette. Our data indicate that the glycine binding site of postsynaptic NMDA Rs is not saturated. Moreover, they suggest that presynaptic NMDA Rs are located in layer II/III pyramidal neurons of the rat visual cortex and that the glycine binding site of presynaptic NMDA Rs tonically regulates glutamate release.", "corpus_id": 14152621, "venue": "Journal of neurophysiology", "year": 2007, "author_names": [ "Yan-hai Li", "Tai-zhen Han" ], "n_citations": 38, "n_key_citations": 2, "score": 0 }, { "doc_id": "227089300", "title": "Effects of dopamine on gamma amino butyric acid activated currents in neutron of visual cortex of rat", "abstract": "Background As a main suppressing neurotransmitter in visual system,gamma aminobutyric acid (GABA) participates in the transmission and regulation of visual information.GABA and dopamine (DA) coexist in the visual cortex,and their mutual effects should be clarified.Objective This study was to investigate the effect of DA on GABA activated current in vitro in cultured visual cortical neurons of rats.Methods Neutrons from visual cortex of clean neonatal rats were isolated and cultured by explant culture method.The neutrons cultured for 11 to 14 days were collected for the record of whole cell currents of GABA A (IGABA) channels in vitro using patch clamp technique.The DA solution (100mmol/L),SKF38393 (10mmol/L) solution and quinpirole solution(10mmol/L) were prepared with double distilled water and then the extracellular fluid was added to different concentrations.The IGABA changing rate under the action of SKF38393+SCH23390,SKF38393+Quinpirole for different time was recorded respectively and compared with that of action of DA,SKF38393,SCH23390,Quinpirole.The IGABA activated by extracellular fluid along served as control.Results The IGABA was significantly attenuated after activated by =10mmol/L of DA or SKF38393 separately in comparison to that of extracellular fluid action (P<0.05).In various time of action,there were obviously differences in IGABA between DA or SKF38393 action and extracellular fluid (P<0.05,P<0.01).No evident change in IGABA changing rate was found after only SCH23390 action in comparison with extracellular cells (P<0.05).However,after combination of SCH23390 and SKF38393,IGABA changing rate reduced by 19.49%.No significant differences were found in the changing rates of IGABA among different concentrations of quinpirole action groups compared with extracellular fluid group (P>0.05);while when quinpirole was combined with SKF38393,the IGABA was elevated in comparison with only SKF38393 action group (P<0.05).Conclusion Dopamine participates in the transfer and regulation of visual information through suppressing GABA activated currents from neutrons of visual cortex at time dependent manner in vitro. Key words: Dopamine; Gamma aminobutyric acid; Visual cortex; Patch clamp; Primary culture", "corpus_id": 227089300, "venue": "", "year": 2011, "author_names": [ "Xiao-ying Wu", "Shuang-zhen Liu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "41012558", "title": "Multiple G protein coupled receptors mediate presynaptic inhibition at single excitatory synapses in the rat visual cortex", "abstract": "Modulation of excitatory synaptic transmission by agonists for several neurotransmitter receptors was investigated at intrinsic cortical synapses derived from single presynaptic neurons. Excitatory postsynaptic currents (EPSCs) were recorded from layer 5 pyramidal neurons in the rat visual cortex in response to minimal stimulation within the same layer. 5 hydroxytryptamine, adenosine, baclofen, carbachol and DCG IV all suppressed EPSCs with an increase in paired pulse ratio. These agonists reduced the frequency of miniature EPSCs without significantly affecting their amplitude distribution. These results suggest that glutamatergic excitatory transmission in the neocortex is under the control of presynaptic inhibition mediated by multiple neuromodulator receptors co expressed in single presynaptic terminals.", "corpus_id": 41012558, "venue": "Neuroscience Letters", "year": 2001, "author_names": [ "Takayuki Murakoshi", "Si-young Song", "Shiro Konishi", "Tsutomu Tanabe" ], "n_citations": 19, "n_key_citations": 4, "score": 0 }, { "doc_id": "6250146", "title": "Title Glycine binding sites of presynaptic NMDA receptors may tonically regulate glutamate release in the rat visual cortex", "abstract": "In the central nervous system, activation of N methyl D aspartate receptor (NMDA R) glycine binding sites is a prerequisite for activation of postsynaptic NMDA Rs by the excitatory neurotransmitter glutamate. Here we provide electrophysiological evidence that the glycine binding sites of presynaptic NMDA Rs regulate glutamate release in layer II/III pyramidal neurons of the rat visual cortex. Specifically, our results reveal that the frequency of miniature excitatory postsynaptic currents (mEPSCs) is significantly reduced by 7 chloro kynurenic acid (7 Cl KYNA) a NMDA R glycine binding site antagonist, and glycine or D serine reverses this effect. Similar results are obtained when the open channel NMDA receptor blocker, MK 801, is included in the recording pipette. Our data indicate that the glycine binding site of postsynaptic NMDA Rs is not saturated. Moreover, they suggest that presynaptic NMDA Rs are located in layer II/III pyramidal neurons of the rat visual cortex, and that the glycine binding site of presynaptic NMDA Rs tonically regulates glutamate release.", "corpus_id": 6250146, "venue": "", "year": 2006, "author_names": [ "Yan-hai Li", "Tai-zhen Han" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "25404266", "title": "Development of neurotransmitter parameters in lateral geniculate body, superior colliculus and visual cortex of the albino rat.", "abstract": "The postnatal development of some neurotransmitter parameters was measured in lateral geniculate body, superior colliculus and visual cortex of the rat. The following parameters were studied: (i) high affinity uptake of L glutamate or D aspartate as markers for glutamergic neurons; (ii) high affinity uptake of GABA, which reflects both glial and neuronal uptake of GABA; (iii) HA beta alanine uptake as a marker for accumulation of GABA in glial structures; (iv) activity of glutamic acid decarboxylase which reflects GABAergic neurons; and (v) activity of choline acetyltransferase as a cholinergic marker. Km and Vmax were determined for high affinity uptake of glutamate and GABA in newborn and adult animals. The possible glial influence on the uptake during development is discussed. In lateral geniculate body and visual cortex the HA glutamate uptake showed increasing activity from birth to adulthood, whereas in superior colliculus, the uptake was higher at birth, reaching a small significant peak after 12 days of age, and was then reduced to adult level. Km showed no such change between neonatal and adult animals. At birth, high affinity GABA uptake was similar to the adult level in superior colliculus and lateral geniculate body. In visual cortex, the uptake of GABA was 50% of adults. However, on day 15, the GABA uptake showed 2 to 3 fold higher activity in all regions when compared to adult level. Km for GABA uptake in neonatals and adults differed only in lateral geniculate body. High affinity uptake of beta alanine was 50 80% lower in adults than in newborn rats. Glutamate decarboxylase activity, however, increased continuously in all 3 regions examined. This was true also for choline acetyltransferase.", "corpus_id": 25404266, "venue": "Brain research", "year": 1983, "author_names": [ "Ivar Kvale", "Viggo M Fosse", "Frode Fonnum" ], "n_citations": 75, "n_key_citations": 2, "score": 1 }, { "doc_id": "39932133", "title": "The release of endogenous amino acids from rat visual cortex by calcium ions in the presence of the calcium ionophores X537A and A23187", "abstract": "USING a cortical cup technique (MITCHELL, 1963) it has recently been shown that the application of salt solutions containing high concentrations of potassium ions, and of electrical stimulation to the surface of the visual cortex of the anaesthetized rat is accompanied by changes in the release of several physiologically active endogenous amino acids (CLARK COLLINS, 1975, 1976; COLLINS, 1975) One of the criteria by which it is possible to identify which of these compounds might be a neurotransmitter is whether such evoked release is dependent on the extracellular concentration of calcium ions. When such experiments were carried out (CLARK COLLINS, 1976) the evoked release of GABA, aspartate and glutamate but not that of taurine appeared to be calcium dependent. Nevertheless, it is difficult to lower calcium levels in uiuo as stores are continually being replenished from the circulation. In this study, an attempt has been made to overcome this difficulty by monitoring the effect of compounds X537A and A23187, two calcium ionophores, on the release of some endogenous amino acids from the visual cortex of the anaesthetized rat.", "corpus_id": 39932133, "venue": "Journal of neurochemistry", "year": 1977, "author_names": [ "Godfrey G S Collins" ], "n_citations": 8, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "226212411", "title": "Data Science and Artificial Intelligence in Project Management: The Past, Present and Future", "abstract": "The contemporary landscape of Project Management is continually morphing as a response to the changing demands as well as the developing technology available. This article discusses and uncovers the current state of Data Science and Artificial Intelligence in relation to the Project Management sector. Drawing from this context, the possible future applications and uses are then delineated. Several trends are identified, and the overall findings are synthesised to provide a realistic impression of what the future topography of Project Management holds. The increasingly sophisticated applications of technology will assist in streamlining current industry standard procedures.", "corpus_id": 226212411, "venue": "", "year": 2020, "author_names": [ "Stephen Ong", "Shahadat Uddin" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "229348995", "title": "The Last State of Artificial Intelligence in Project Management", "abstract": "Artificial intelligence (AI) has been used to advance different fields, such as education, healthcare, and finance. However, the application of AI in the field of project management (PM) has not progressed equally. This paper reports on a systematic review of the published studies used to investigate the application of AI in PM. This systematic review identified relevant papers using Web of Science, Science Direct, and Google Scholar databases. Of the 652 articles found, 58 met the predefined criteria and were included in the review. Included papers were classified per the following dimensions: PM knowledge areas, PM processes, and AI techniques. The results indicated that the application of AI in PM was in its early stages and AI models have not applied for multiple PM processes especially in processes groups of project stakeholder management, project procurements management, and project communication management. However, the most popular PM processes among included papers were project effort prediction and cost estimation, and the most popular AI techniques were support vector machine, neural networks, and genetic", "corpus_id": 229348995, "venue": "ArXiv", "year": 2020, "author_names": [ "Mohammad Reza Davahli" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "199090649", "title": "Artificial Intelligence in Project Management", "abstract": "", "corpus_id": 199090649, "venue": "The Management Accountant Journal", "year": 2019, "author_names": [ "Joy M Shah" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "199083706", "title": "Emerging Roles of Artificial Intelligence in Project Management", "abstract": "", "corpus_id": 199083706, "venue": "Project Management", "year": 2019, "author_names": [ "Adedeji B Badiru" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "225998161", "title": "Applying Artificial Intelligence techniques in Project Management", "abstract": "The main purpose of this thesis is to create a model like Earned Value Management (EVM) model in the Project Management for better forecasting. Some machine learning concepts will be used to better predict the project duration and minimize the cost. Traditional EVM model formulas to track Projects progress relies on too many assumptions and simplifications. This oversimplification can affect the accuracy of the forecasting which can cause delay and in turn increase project costs. There is also bias related to human perceptions in the EVM model which must be eliminated. The goal is to develop a new dynamic monitoring and optimization tool to track progress of the project. Furthermore, to increase forecasting, rescheduling and reallocation processes efficiency with new DSS (decision support system) Machine learning an ever growing field and implementation of it in project management can change how projects are tracked. Machine learning models are trained with data already available so that the computer can make a more informed decision by itself. It should identify all the combinations and provide best scheduling option which minimizes cost and financial exposures. The ultimate goal is to minimize the project duration and project costs. The another aspect which will be focused and that is the financial exposure. The aim is to minimize the financial exposure which traditional methods do not account for. This is more practical than theoretical as banks are reluctant to fund the project if the cash flow is not smooth. The financial need should be minimized.", "corpus_id": 225998161, "venue": "", "year": 2020, "author_names": [ "Mohamad Usama Kunnathur" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "225248715", "title": "The Role of Artificial Intelligence in the future of E learning and Project Management", "abstract": "", "corpus_id": 225248715, "venue": "", "year": 2020, "author_names": [ "Ogechukwu Rosita Adunchezor" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "48616651", "title": "Application of artificial intelligence in project management under risk condition", "abstract": "Risk management problem was shown in the paper. Relationship between risk management and production process scheduling was analyzed. Different types of data analysis were presented. Toothed gear production process was taken as an example of task timing estimation. 1. PROJECT MANAGEMENT APPROACH", "corpus_id": 48616651, "venue": "", "year": 2009, "author_names": [ "Izabela Kutschenreiter-Praszkiewicz" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "214718963", "title": "Smart Work Injury Management (SWIM) System: Artificial Intelligence in Work Disability Management", "abstract": "Purpose This paper aims to illustrate an example of how to set up a work injury database: the Smart Work Injury Management (SWIM) system. It is a secure and centralized cloud platform containing a set of management tools for data storage, data analytics, and machine learning. It employs artificial intelligence to perform in depth analysis via text mining techniques in order to extract both dynamic and static data from work injury case files. When it is fully developed, this system can provide a more accurate prediction model for cost of work injuries. It can also predict return to work (RTW) trajectory and provide advice on medical care and RTW interventions to all RTW stakeholders. The project will comprise three stages. Stage one: to identify human factors in terms of both facilitators and barriers RTW through face to face interviews and focus group discussions with different RTW stakeholders in order to collect opinions related to facilitators, barriers, and essential interventions for RTW of injured workers; Stage two: to develop a machine learning model which employs artificial intelligence to perform in depth analysis. The technologies used will include: 1. Text mining techniques including English and Chinese work segmentation as well as N Gram to extract both dynamic and static data from free style text as well as sociodemographic information from work injury case files; 2. Principle component/independent component analysis to identify features of significant relationships with RTW outcomes or combine raw features into new features; 3. A machine learning model that combines Variational Autoencoder, Long and Short Term Memory, and Neural Turning Machines. Stage two will also include the development of an interactive dashboard and website to query the trained machine learning model. Stage three: to field test the SWIM system. Conclusion SWIM ia secure and centralized cloud platform containing a set of management tools for data storage, data analytics, and machine learning. When it is fully developed, SWIM can provide a more accurate prediction model for the cost of work injuries and advice on medical care and RTW interventions to all RTW stakeholders. Ethics The project has been approved by the Ethics Committee for Human Subjects at the Hong Kong Polytechnic University and is funded by the Innovation and Technology Commission (Grant ITS/249/18FX)", "corpus_id": 214718963, "venue": "Journal of Occupational Rehabilitation", "year": 2020, "author_names": [ "Andy S K Cheng", "Peter Hiu Fung Ng", "Zackary P T Sin", "Sun H S Lai", "S W Law" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "227277456", "title": "Technologies of Artificial Intelligence in Educational Management", "abstract": "This research paper presents the analysis of artificial intelligence techniques employed in the field of educational management. The author reviews intelligent learning systems. Particular attention is drawn to the expert systems that are integrated into the design of platforms for on line learning. Highlighted are the features of intelligent systems allowing for organization of the optimized digital learning process. By way of illustration, suggested is the creation of an interactive training project aiming at the successful acquisition of knowledge by students taking courses in philosophy, as well as at improving the quality of this knowledge. The methods of the project implementation include design and development of the software necessary to create and operate the on line platforms; systematic approach including the databank formation and classification of the data; approach to the intelligent data processing to activate the interactive learning models.", "corpus_id": 227277456, "venue": "2020 International Conference on Engineering Management of Communication and Technology (EMCTECH)", "year": 2020, "author_names": [ "Natalia N Pluzhnikova" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216437171", "title": "Artificial Intelligence and Project Management", "abstract": "", "corpus_id": 216437171, "venue": "", "year": 2020, "author_names": [ "Naoshi Uchihira", "Toshiki Mori", "Takeshi Oshima" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "229106636", "title": "The Two Way Cultural Street: The influence of US popular culture in the Korean Wave and Japanese anime and viceversa", "abstract": "", "corpus_id": 229106636, "venue": "", "year": 2020, "author_names": [ "Natalia Miron Florido" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "198049118", "title": "A study on the presentation and influence of pan anime culture in Chinese animated films", "abstract": "Taking the influence of pan anime process on the animation creation and animation industry in China as the research object, through the multi angle analysis of the trend in the works in recent years by domestic animation creators, the study attempted to provide some advice for integrating pan anime culture more naturally into the creation of the current domestic animation film and narrative mode and provide some help for catering to the preferences of pan anime audience under the new pattern.", "corpus_id": 198049118, "venue": "Journal of Physics: Conference Series", "year": 2019, "author_names": [ "Baiheng Liu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "199247336", "title": "The influence of Japanese anime on the values of adolescent", "abstract": "The Japanese animation industry is very mature, and it has a certain impact on the values of Chinese youth after entering the Chinese market. The courage to pursue dreams in Japanese anime and the determination to challenge difficulties and team awareness have a positive effect on the formation of correct values for adolescents, and the violence and pornography also have a certain negative impact on the formation of adolescent values. In depth analysis of the reasons for Japanese anime in Chinese youth, objectively discusses the advantages and disadvantages of Japanese animation affecting the growth of Chinese youth, and has a positive effect on the physical and mental growth of contemporary Chinese youth.", "corpus_id": 199247336, "venue": "", "year": 2019, "author_names": [ "Sen-lin Lu", "Rongwei Zhang" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "213092424", "title": "Influence of Online Store on Public Enthusiasm on Japanese Anime Culture Merchandise", "abstract": "", "corpus_id": 213092424, "venue": "", "year": 2019, "author_names": [ "Y Narulita", "I Gustiana" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "158672413", "title": "Copyright Meets Fandom: Understanding the Cultural Influence of 'Manga' and 'Anime' through Fan Translations and Copyright Laws", "abstract": "", "corpus_id": 158672413, "venue": "", "year": 2018, "author_names": [ "Joy Thornton" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "193814209", "title": "A study on the influence of Anime among Anime Fans in Aizawl", "abstract": "This paper is a study on the influence of anime genre of animation, as regards to the attitudes and behaviour of the fans of this genre in Aizwal. The study hypothesises that; the characters in anime serve as a model for anime fans, and they tend to imitate their favourite character and that Anime is the main agent to disseminate Japanese popular culture in Aizwal. The Social Learning Theory which postulates that anime fans imitate the attitudes and behaviour of their favourite anime characters through observation and learning. The present study employed Focus group method to collect qualitative data. Data collected will be transcribed and selected extract analysed. Participants in the focus groups comprised of the members of two leading anime fans club in Aizawl; Anime Freaks Hard Core (AFHC) and Anizos between the ages of 15 25 years old. The study was conducted into six groups which consisted of twelve participants each.", "corpus_id": 193814209, "venue": "", "year": 2017, "author_names": [ "Maria Lal Muankimi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "149898990", "title": "Anime and its Influence on the Shaping of Humanistic Values among Filipino College Students", "abstract": "Rooted in Japan, animes have successfully been assimilated into the Filipino society. The current study examined whether these animes can contribute to the development of humanistic values contrary to an observation that they are violent and semi pornographic. The researcher conducted a survey of 865 college students at a state university in central Philippines. Findings reveal that friendship, love of family, concern for health and well being, are among the values identified by the respondents as evident in the animes. Moreover, animes tend to reinforce the relational nature of Filipinos. These findings offer a significant contribution to the study on the effects of new non native media on Filipino youth values.", "corpus_id": 149898990, "venue": "", "year": 2017, "author_names": [ "Rose Marie Pinili" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "56028957", "title": "The Influence of Japanese Anime Language to Chinese Network Buzzwords", "abstract": "In this paper, the influence of Japanese anime language to Chinese network buzzwords was studied, and the maturity and rigor were quoted. The Japanese anime language refined, creative can be so popular in the factors of psychologies also was analyzed. According to these studies, some suggestions were put forward that how to standardize the network buzzwords and how to raise its taste.", "corpus_id": 56028957, "venue": "", "year": 2016, "author_names": [ "Jin Chang Cai" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198954863", "title": "Samurai, Ninja and Little Monsters: The influence of the audience on anime localization", "abstract": "", "corpus_id": 198954863, "venue": "", "year": 2016, "author_names": [ "R Bloem" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "211464381", "title": "THE INFLUENCE OF THE ANIME CULTURE ON THE CONSUMER BEHAVIOR", "abstract": "Presenting the impact of manga and anime products in the current economical environment, this article reviews the state of knowledge in the field and aims to highlight the appropriate market segment. The importance of the anime culture for the economy and the ability of the comic image to overcome the cultural barriers are the two goals that we want to highlight here. Consequently, the need for the optimal strategies, to promote the manga and anime products on the Romanian market. An example of this is the Nijikon Convention, one of the biggest media event of \"pop culture\" in Romania.", "corpus_id": 211464381, "venue": "", "year": 2015, "author_names": [ "Adrian Nicolae Cazacu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "220527088", "title": "A Scoping Review of Registered Clinical Trials of Convalescent Plasma for COVID 19 and a Framework for Accelerated Synthesis of Trial Evidence (FAST Evidence)", "abstract": "Abstract Many parallel studies of convalescent plasma with modest enrolment projections have been launched for the treatment of COVID 19. By pooling data from multiple parallel studies that are similar, we can increase the effective sample size and achieve enough statistical power to determine effectiveness more quickly through metanalysis. A scoping review of registered clinical trials of convalescent plasma for COVID 19 was conducted to assess the feasibility of performing a rapid and timely metanalysis that will support accelerated review for approval and implementation. ClinicalTrials.gov and the WHO International Clinical Trials Registry Platform were searched April 23, 2020. Trials were included if they utilized convalescent plasma to treat or prevent COVID 19. Forty eight registered trials (projected to enroll more than 5000 subjects) of convalescent plasma were identified and included for analysis. The majority of studies (33 studies with 4440 projected enrolment) will address the treatment of severe and/or critical cases of COVID 19. Twenty nine studies are controlled and 17 of these are reported as actively recruiting. The combined enrolment of patients from similar studies should be sufficient to determine meaningful improvements in mortality, rates of admission to intensive care and need for mechanical ventilation by the end of 2020 sooner than any individual study could determine effectiveness. Accessing supplemental outcome data from investigators may be needed, however, to align reporting of some outcomes from these studies. Heterogeneity in product potency due to different antibody titers is anticipated and studies using conventional treatment as controls instead of placebo may complicate our understanding of efficacy. Convalescent plasma is being tested in ongoing controlled studies, largely to treat severe and/or critical cases of COVID 19. Sufficient combined power to detect clinically important reductions in multiple outcomes, including mortality, is expected by September 2020. Regulatory approval, funding and implementation by blood operators could be accelerated by planned metanalysis as study results become available.", "corpus_id": 220527088, "venue": "Transfusion Medicine Reviews", "year": 2020, "author_names": [ "Katina Zheng", "Gary Liao", "Manoj M Lalu", "Alan Tinmouth", "Dean A Fergusson", "David S Allan" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "221490774", "title": "Convalescent Plasma for COVID 19: A multicenter, randomized clinical trial", "abstract": "Background: Passive immunotherapy with convalescent plasma (CP) is a potential treatment for COVID 19 for which evidence from controlled clinical trials is lacking. Methods: We conducted a multi center, randomized clinical trial in patients hospitalized for COVID 19. All patients received standard of care treatment, including off label use of marketed medicines, and were randomized 1:1 to receive one dose (250 300 mL) of CP from donors with IgG anti SARS CoV 2. The primary endpoint was the proportion of patients in categories 5, 6 or 7 of the COVID 19 ordinal scale at day 15. Results: The trial was stopped after first interim analysis due to the fall in recruitment related to pandemic control. With 81 patients randomized, there were no patients progressing to mechanical ventilation or death among the 38 patients assigned to receive plasma (0% versus 6 out of 43 patients (14% progressing in control arm. Mortality rates were 0% vs 9.3% at days 15 and 29 for the active and control groups, respectively (log rank p=0.056) No significant differences were found in secondary endpoints. At inclusion, patients had a median time of 8 days (IQR, 6 9) of symptoms and 49,4% of them were positive for anti SARS CoV 2 IgG antibodies. Conclusions: Convalescent plasma could be superior to standard of care in avoiding progression to mechanical ventilation or death in hospitalized patients with COVID 19. The strong dependence of results on a limited number of events in the control group prevents drawing firm conclusions about CP efficacy from this trial. (Funded by Instituto de Salud Carlos III; NCT04345523)", "corpus_id": 221490774, "venue": "medRxiv", "year": 2020, "author_names": [ "Cristina Avendano-Sola", "Antonio Ramos-Martinez", "Elena Munez-Rubio", "Belen Ruiz-Antoran", "Rosa Malo de Molina", "Ferran Torres", "Ana Fernandez-Cruz", "Alejandro Callejas-Diaz", "Juan Jose Arechederra Calderon", "Concepcion Payares-Herrera", "Ivonne Salcedo", "Isabel Castillo Romera", "Jaime Lora-Tamayo", "Mikel Mancheno-Losa", "M Paciello", "Carolina Villegas", "V Estrada", "I Saez-Serrano", "Maria Lourdes Porras-Leal", "Maria Del Castillo Jarilla-Fernandez", "Jose Ramon Pano-Pardo", "J A Moreno-Chulilla", "Itziar Arrieta-Aldea", "A Bosch", "Moncef Belhassen-Garcia", "Olga Lopez-Villar", "Ascension Ramos-Garrido", "L Blanco", "M Madrigal", "Elvira Contreras", "Eduardo Muniz-Diaz", "Jose Maria Domingo-Morera", "Inmaculada Casas-Flecha", "Mayte Perez-Olmeda" ], "n_citations": 84, "n_key_citations": 5, "score": 0 }, { "doc_id": "225378109", "title": "CONVALESCENT PLASMA FOR COVID 19 INFECTION: EVIDENCE AND CLINICAL APPLICATION", "abstract": "Corona virus disease 2019 (COVID 19) is caused by severe acute respiratory syndrome corona virus 2 (SARS CoV2) and has currently affected 11 million people worldwide with 0.53 million deaths. While there is ongoing trials and research for newer therapeutic options including antivirals (remdesivir) anti interleukin 6 (tocilizumab) vaccines and antimalarials; there is renewed interest in the use of old therapeutic tools as well. Convalescent plasma has been used historically for measles, poliomyelitis, Spanish flu pandemic, severe acute respiratory syndrome (SARS1) and Ebola epidemics with conflicting results. With widespread use of convalescent plasma throughout the world as investigational drug for COVID 19, it is important to review past experience with its use in various outbreaks, potential role in COVID 19, and clinical application during current pandemic and challenges faced by resource constrained countries.", "corpus_id": 225378109, "venue": "", "year": 2020, "author_names": [ "Ghassan umair Shamshad", "Raheel Iktikhar", "Qamar Un Nisa Chaudhry", "Jehanzeb Ur Rehman", "Parvez Iftekhar Ahmed" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "219429421", "title": "Randomization amid a pandemic a critical appraisal regarding convalescent plasma therapy clinical trials for COVID 19 patients", "abstract": "Abstract The novel coronavirus disease (COVID 19) is spreading rapidly, a pandemic that has already affected millions of people across the world Currently there are no vaccines or drugs approved for COVID 19 Initial data which are coming from large clinical trials using Hydroxychloroquine, Lopinavir/Ritonavir, Remdesevir, and Favipiravir are not satisfactory against COVID 19 till now and we are in the midst of a worldwide public health threat In this context human convalescent plasma is considered as an option for treatment of COVID 19 disease Convalescent plasma therapy is a classic adaptive immunotherapy which involves the administration of antibodies against COVID 19 to a COVID 19 patient for the purpose of treating the viral disease Over the last two decades, convalescent plasma therapy was used for the treatment of 2003 SARS CoV 1 epidemic, 2009 2010 H1N1 influenza virus pandemic, the 2012 Middle East Respiratory Syndrome (MERS) CoV epidemic and 2014 2016 Ebola epidemic", "corpus_id": 219429421, "venue": "", "year": 2020, "author_names": [ "Suvro Sankha Datta", "Sabita Basu" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "220846989", "title": "Evidence favouring the efficacy of convalescent plasma for COVID 19 therapy", "abstract": "To determine the effect of COVID 19 convalescent plasma on mortality, we aggregated patient outcome data from randomized clinical trials, matched control, and case series studies. Fixed effects analyses demontrated that hospitalized COVID 19 patients transfused with convalescent plasma exhibited a a57% reduction in mortality rate (13% compared to matched patients receiving standard treatments (25% OR: 0.43, P 0.001) These data provide evidence favouring the efficacy of human convalescent plasma as a therapeutic agent in hospitalized COVID 19 patients.", "corpus_id": 220846989, "venue": "medRxiv", "year": 2020, "author_names": [ "Stephen A Klassen", "Jonathon W Senefeld", "Patrick W Johnson", "Rickey E Carter", "Chad C Wiggins", "Shmuel Shoham", "Brenda J Grossman", "Jeffrey P Henderson", "James M Musser", "Eric Salazar", "William R Hartman", "Nicole M Bouvier", "Sean T H Liu", "Liise-Anne Pirofski", "Sarah E Baker", "Noud van Helmond", "R Scott Wright", "DeLisa Fairweather", "K A Bruno", "Zhen Wang", "Nigel S Paneth", "Arturo Casadevall", "Michael J Joyner" ], "n_citations": 75, "n_key_citations": 0, "score": 1 }, { "doc_id": "221038390", "title": "Convalescent plasma for COVID 19: Promising, not proven", "abstract": "While promising, convalescent plasma remains experimental and is not proven effective for COVID 19. In addition, many questions remain regarding the accuracy and predictive value of antibody testing of donors and patients, optimal donor selection, optimal timing, and selection of patients most likely to benefit. Until these questions are answered, convalescent plasma should ideally be used in the context of well designed clinical trials. The evidence is suggestive but weak. Trials are ongoing.", "corpus_id": 221038390, "venue": "Cleveland Clinic Journal of Medicine", "year": 2020, "author_names": [ "Simon R Mucha", "NurJehan Quraishy" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "220637785", "title": "Convalescent plasma to treat critically ill patients with COVID 19: framing the need for randomised clinical trials", "abstract": "We are in a severe acute respiratory distress syndrome coronavirus 2 (SARS CoV 2) pandemic, causing coronavirus disease (COVID 19) SARS CoV 2 is an enveloped RNA virus with cell entry facilitated by spike (S) protein that has a cleavage site at the S1 S2 boundary and other structural proteins such as membrane (M) envelope (E) and nucleocapsid (N) proteins [1] Currently, there are two lineages of SARS CoV 2 virus infecting humans, with similar virulence and clinical outcomes, derived from a common ancestor that originated in December 2019 in Wuhan [1, 2] Most patients who recover from SARS CoV 2 illness will develop antibodies and memory lymphocytes against these proteins, which gives them immunity [3] In this editorial, we discuss the biological, operational, and methodological questions that arise when designing a randomised controlled trial (RCT) of convalescent plasma in COVID 19.", "corpus_id": 220637785, "venue": "Critical Care", "year": 2020, "author_names": [ "Manu Shankar-Hari", "Lise J Estcourt", "Heli Harvala", "David J Roberts", "David K Menon", "Manu Lise Heli David David K Shankar-Hari Estcourt Harvala Roberts Menon" ], "n_citations": 14, "n_key_citations": 0, "score": 1 }, { "doc_id": "226765122", "title": "Development of a Database of Registered Clinical Trials Using Convalescent Plasma for Treatment of COVID 19: Is Data Harmonization Possible?", "abstract": "Background/Case Studies: COVID 19 convalescent plasma (CCP) is a promising therapeutic option, but efficacy remains unknown In response to the emerging pandemic, multiple clinical trials assessing the efficacy and/or safety of CCP were registered in quick succession on ClinicalTrials gov (CTG) However, concern is growing that several trials may not reach stated enrollment goals We hypothesize that data harmonization among these trials may yield meaningful data that could not be obtained from underpowered individual trials We have developed a multidimensional grid of relevant US clinical trials, with the goal of determining if data harmonization can be achievable by identifying common data standards Study Design/Methods: All US trials registered on CTG as of 5/30/20 with CCP as treatment for COVID 19 patients were considered for inclusion Studies were excluded if they were designed solely for compassionate use (expanded access) assessed the feasibility of CCP collection or delivery per se (no treatment endpoint) were exclusively in children, or were duplicates Key parameters such as study design, patient population(s) and clinical and laboratory endpoints were extracted Trials were grouped based on target patient populations and study design Results/Findings: Between 3/22/20 and 5/30/20, 37 trials involving CCP were registered on CTG 12 were excluded based on above criteria The remaining 25 trials were organized based on patient populations and study design, yielding five distinct groups: (A) double blind randomized control trials (DBRCT) involving outpatients (N=4)(B) DBRCTs involving inpatients (N=6)(C) randomized open label trials involving inpatients (N=2)(D) single arm open label trials involving inpatients (N=10)(E) single arm open label trials involving both inpatients and outpatients (N=3) Among the 12 trials randomizing to two arms (groups A, B, C) the non intervention arm varied (standard plasma, 5% albumin, LR, \"standard care\" Among the 21 studies involving inpatients (groups B E) both clinical severity of patients enrolled, and outcomes analyzed varied greatly Conclusions: Meaningful groupings of CCP clinical trials based on common parameters were developed in the above framework Overlaps as well as sources of heterogeneity among trials were identified This framework allows the generation of preliminary recommendations to facilitate data harmonization across trials that may face accrual problems Prospective pre statistical harmonization of data across clinical trials by adoption of common data standards, including inclusion and exclusion criteria, study populations, intervention protocols, outcome measures and data dictionaries, can facilitate pooling of data and improve statistical power Both trial level and individual patient level meta analyses may be employed as statistical strategies to analyze data", "corpus_id": 226765122, "venue": "", "year": 2020, "author_names": [ "Ruchika Goel", "Claudia S Cohn", "James D Gorham" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "218872644", "title": "Convalescent Plasma for COVID 19: back to the future", "abstract": "The global pandemic of the new coronavirus SARS CoV 2 not only has medical, economic and social but also historical significance. In many parts of the world, the exponential epidemic curve of cases has overwhelmed hospital services. The primary pulmonary viral infection has required supportive care with oxygen and, if needed, mechanical ventilation and clinical teams around the world have successfully cared for hundreds of thousands of severely ill patients. However, there is currently no specific antiviral therapy that is proven to reduce mortality, although many putative antiviral and anti inflammatory regimes are being tested in large randomised clinical trials. The lack of a specific therapy has caused some sense of hopelessness in clinical staff, trepidation in the wider public and has not made plotting a route out of lockdown any easier. However, the most promising therapy at the moment may be one of the oldest. It is one where transfusion services and hospital blood banks play a direct role in identifying donors, testing, manufacturing and issuing products. It is also one where patients who have had COVID 19 can donate plasma, which can be used as a therapy for new patients who present with the disease. Convalescent plasma treatment, containing polyclonal antibody (Ab) has been used to treat severe viral pneumonia during previous pandemics. In fact, it has been used intermittently for over a century, including patients treated during the era of the Spanish Influenza pandemic in the early 20th century. Although all the studies conducted at that time had significant methodological flaws, and none were randomised, they suggested a reduction in mortality. In the more recent past, convalescent plasma has been used to treat H1N1 influenza and, more relevantly, SARS CoV infections in 2003, with evidence of some considerable benefit cited in a systematic review, especially if convalescent plasma was given earlier in the course of the disease (within the first 14 days of symptoms) Convalescent plasma has already been used in observational studies of patients with severe COVID 19. However, a systematic review of the evidence has shown that the conclusions about the effectiveness and safety of convalescent plasma in people with COVID 19 that can be drawn from these studies are limited. There have been only eight uncontrolled studies published, including a total of 32 participants. Some of the results reported in these studies are consistent with increased viral clearance and recovery from the disease. In some way, it is remarkable that such a potentially useful treatment has not been rigorously tested to allow definition of evidencebased guidelines for its tactical use in epidemics and for strategic planning for the collection of convalescent plasma to be incorporated into pandemic planning. Lack of evidence for a promising treatment is not unusual, but convalescent plasma has faced the challenge of always being very difficult to collect enough of during a pandemic to provide plasma to treat large number of patients. The other problem has been the lack of a co ordinated national and international response to allow rapid and timely randomised controlled trials to take place. The present COVID 19 epidemic has already been of such duration and magnitude to allow collection and use of plasma. However, it still takes considerable co ordination to complete large scale trials in a short time. A recent report of 5000 patients treated with convalescent plasma in the United States, almost entirely for compassionate use, suggested that convalescent plasma is safe, with no obvious cases of Ab dependent enhancement of disease. However, without data on control patients, it is impossible to be confident whether convalescent plasma is either safe or effective in the treatment of COVID 19. A more rigorous assessment of the role of convalescent plasma is underway. At the last count, 22 randomised trials around the world had been registered on trial registries. Two living systematic reviews of convalescent plasma will assess the benefits of treating people who have been diagnosed with COVID 19 and the benefits of preventative treatment for people at high risk of getting COVID 19. In the United Kingdom, the Office of Life Sciences, NHS Blood and Transplant (NHSBT) and the Department of Health and Social Care (DHSC) have proposed and planned a new programme to collect high volumes of plasma. The work is funded as a new PS20 million project by the DHSC. The strategy is to build up the collection of plasma from convalescent donors to provide enough plasma not only for two large scale randomised controlled trials to assess the efficacy and safety of convalescent plasma, but also to provide enough plasma to treat hospitalised and/or intensive care patients with COVID 19 if the randomised controlled trials do show efficacy. Within six weeks, NHSBT has set up what is effectively a new production line with workstreams reaching out to potential donors who were admitted to hospital and/or testing positive for COVID 19 and those who had symptoms consistent with the disease. NHSBT has established the collection of over 5000 units a week by rearranging work with existing donor centres, building three new collection centres in London, training over 200 newly recruited staff by donor centre staff and the core nursing team and defining new manufacturing processes and new methods to evaluate the quantity and quality of anti SARS CoV 2 antibodies. These are certainly challenging targets, and we have been faced with high on session deferral rates as we are plasmapheresing many first time donors who have recently recovered from serious infection. We are bringing deferral rates down and increasing the proportion of Received: 19 May 2020 Accepted: 20 May 2020", "corpus_id": 218872644, "venue": "Transfusion medicine", "year": 2020, "author_names": [ "David J Roberts", "Gail Miflin", "Lise J Estcourt" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "220119458", "title": "Passive immunotherapy with convalescent plasma against COVID 19? What about the evidence base and clinical trials?", "abstract": "", "corpus_id": 220119458, "venue": "Transfusion and Apheresis Science", "year": 2020, "author_names": [ "Olivier Garraud" ], "n_citations": 8, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "134430700", "title": "Photovoltaic performance prediction in Northern Nigeria using generated typical meteorological year dataset", "abstract": "Relevant meteorological files are needed by simulation software to assess the energy performances of buildings or efficiency of renewable energy systems. This paper adopts the Sandia method to generate typical meteorological year (TMY) using a 35 year hourly measured meteorological dataset from four stations in the northern region of Nigeria. The cumulative distribution function (CDF) for each year was compared with that of the long term composite of all the years in the period for the seven major weather indices made up of relative humidity, wind speed, minimum temperature, global solar radiation, precipitation, mean temperature and maximum temperature. The 12 typical meteorological months (TMMs) selected from the different years were used for formulation of a TMY for the zone. In addition, performance assessment of a 72 cell polycrystalline solar PV module using the generated TMY and long term (LT) values was also conducted. Two statistical indicators, the mean percentage error and the root mean square error, were adopted to evaluate the performance of each TMY with the LT mean, and also that of the PV energy system. Findings show that the TMMs are evenly spread within the data periods across the sites while closest fit between the long term mean and TMY are obtained with the global solar radiation followed by the mean temperature in all the sites especially in Bida and Minna. From the energy system analysis carried out, it was found that TMY data are able to predict the performance of the PV system to within 5% of the LT data.", "corpus_id": 134430700, "venue": "", "year": 2018, "author_names": [ "Olayinka Soledayo Ohunakin", "Muyiwa S Adaramola", "Olanrewaju M Oyewola", "Richard Olayiwola Fagbenle", "Damola S Adelekan", "Jatinder Pal Kaur Gill", "Fidelis I Abam" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "877341", "title": "Integrated Dataset of Screening Hits against Multiple Neglected Disease Pathogens", "abstract": "New chemical entities are desperately needed that overcome the limitations of existing drugs for neglected diseases. Screening a diverse library of 10,000 drug like compounds against 7 neglected disease pathogens resulted in an integrated dataset of 744 hits. We discuss the prioritization of these hits for each pathogen and the strong correlation observed between compounds active against more than two pathogens and mammalian cell toxicity. Our work suggests that the efficiency of early drug discovery for neglected diseases can be enhanced through a collaborative, multi pathogen approach.", "corpus_id": 877341, "venue": "PLoS neglected tropical diseases", "year": 2011, "author_names": [ "Solomon Nwaka", "Dominique Besson", "Bernadette Ramirez", "Louis Maes", "An Matheeussen", "Quentin Bickle", "Nuha R Mansour", "Fouad Yousif", "Simon Townson", "Suzanne Gokool", "Fidelis Cho-Ngwa", "Moses Samje", "Shailja Misra-Bhattacharya", "P Kalpana Murthy", "Foluke Fakorede", "J -M Paris", "Clive Leonard Yeates", "Robert G Ridley", "Wesley C Van Voorhis", "Timothy G Geary" ], "n_citations": 46, "n_key_citations": 0, "score": 1 }, { "doc_id": "212703760", "title": "Automatic Classification of Computational Thinking Skills in Elementary School Math Questions", "abstract": "This research full paper presents the design of an automatic classifier for Computational Thinking skills in math questions, based on Machine Learning and Natural Language Processing techniques. We trained and evaluated our model using a dataset of real world math questions. We obtained encouraging results that indicate the proposed approach may ease the process of assessing the level of alignment between math questions and Computational Thinking skills, which may help improve the problem solving ability in students of elementary school. These results stimulate the use of automated environments for the elaboration, classification, and resolution of math questions in conformity with Computational Thinking skills.", "corpus_id": 212703760, "venue": "2019 IEEE Frontiers in Education Conference (FIE)", "year": 2019, "author_names": [ "Erick J F Costa", "Claudio Elizio Calazans Campelo", "Livia M R Sampaio Campos" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "172014029", "title": "Classificacao Automatica de Questoes Problema de Matematica para Aplicacoes do Pensamento Computacional na Educacao", "abstract": "Recent studies indicate a greater relation of problem questions of Mathematics with Computational Thinking. However, the identification of this relation presents difficulties for a large dataset application. In this work, we present an automatic classifier of Mathematical problem questions with the aim of enabling practices involving Computational Thinking. The results show that it is possible to classify mathematical questions automatically using natural language processing and machine learning. Resumo. Estudos recentes indicam uma maior relacao de questoes problema de Matematica com o Pensamento Computacional. No entanto, a identificacao dessa relacao apresenta dificuldades de aplicacao para um grande conjunto de dados. Neste trabalho, apresentamos um classificador automatico de questoes problema de Matematica com o objetivo de possibilitar praticas envolvendo o Pensamento Computacional. Os resultados mostram que e possivel classificar questoes de Matematica de forma automatica, utilizando processamento de linguagem natural e aprendizado de maquina.", "corpus_id": 172014029, "venue": "", "year": 2018, "author_names": [ "Erick John Fidelis Costa", "Claudio E C Campelo", "Livia Sampaio" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "155581891", "title": "Global endemics area relationships of vascular plants", "abstract": "Abstract Endemics Area Relationships (EARs) are fundamental in theoretical and applied biogeography for understanding distribution patterns and promoting biodiversity conservation. However, calculating EARs for vascular plant species from existing data is problematic because of biased knowledge of endemic species distributions and differences between taxonomies. We aimed to overcome these challenges by developing a new standardized global dataset based on expert knowledge to produce a set of global EARs. We developed a nested circle design, with grain sizes of 104, 105, 106, 107, and 108 km2, respectively, and a global distribution of plots based on a stratified random scheme. The number of vascular plant species endemic to each circle was then estimated independently by five experts randomly chosen from a pool of 23, as both a minimum and a maximum value (lower and upper bounds of the estimation) taking into account the limitations of current knowledge and varied species concepts in existing taxonomies. This procedure resulted in a dataset of 3000 expert estimates. Based on the data, we produced three global EARs for endemic species richness using minimum, maximum and average estimates. As a validation, we used all three models to extrapolate to the entire world, producing estimates of 284,493 (minimum) 398,364 (maximum) and 312,243 (average) vascular plant species. These figures conform to the range of taxonomists' estimates. From the models, we calculated the average area needed to harbour a single endemic species as 12,875 km2 (range 9675 20,529) The global vascular plant EARs we calculated represent the first standardized, quantitative expectations of plant endemism at any given scale (sampling unit size) These EARs allow us to provide a clear answer to a long standing but elusive biogeographical question: how to assess whether any area on the surface of the Earth is rich or poor in endemics relative to the average.", "corpus_id": 155581891, "venue": "Perspectives in Ecology and Conservation", "year": 2019, "author_names": [ "Carsten Hobohm", "Monika Janisova", "Manuel J Steinbauer", "Sara Landi", "Sula E Vanderplank", "Carl Beierkuhnlein", "John-Arvid Grytnes", "Ole Reidar Vetaas", "Alessandra Fidelis", "Lea de Nascimento", "Vincent Ralph Clark", "Jose Maria Fernandez-Palacios", "Scott Franklin", "Riccardo Guarino", "Pavel V Krestov", "Vladimir G Onipchenko", "Christian Stolz", "Alessandro Chiarucci" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "19194198", "title": "OH 83: A new early modern human fossil cranium from the Ndutu beds of Olduvai Gorge, Tanzania.", "abstract": "OBJECTIVE Herein we introduce a newly recovered partial calvaria, OH 83, from the upper Ndutu Beds of Olduvai Gorge, Tanzania. We present the geological context of its discovery and a comparative analysis of its morphology, placing OH 83 within the context of our current understanding of the origins and evolution of Homo sapiens. MATERIALS AND METHODS We comparatively assessed the morphology of OH 83 using quantitative and qualitative data from penecontemporaneous fossils and the W.W. Howells modern human craniometric dataset. RESULTS OH 83 is geologically dated to ca. 60 32 ka. Its morphology is indicative of an early modern human, falling at the low end of the range of variation for post orbital cranial breadth, the high end of the range for bifrontal breadth, and near average in frontal length. DISCUSSION There have been numerous attempts to use cranial anatomy to define the species Homo sapiens and identify it in the fossil record. These efforts have not met wide agreement by the scientific community due, in part, to the mosaic patterns of cranial variation represented by the fossils. The variable, mosaic pattern of trait expression in the crania of Middle and Late Pleistocene fossils implies that morphological modernity did not occur at once. However, OH 83 demonstrates that by ca. 60 32 ka modern humans in Africa included individuals that are at the fairly small and gracile range of modern human cranial variation.", "corpus_id": 19194198, "venue": "American journal of physical anthropology", "year": 2017, "author_names": [ "Whitney B Reiner", "Fidelis Taliwawa Masao", "Sabrina B Sholts", "Agustino Venance Songita", "Ian G Stanistreet", "Harald Stollhofen", "R E Taylor", "Leslea J Hlusko" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "73594082", "title": "Bathymetric Survey Investigation for Lagos Lagoon Seabed Topographical Changes", "abstract": "Bathymetry is the study of under water depth of lake and ocean floors and accurate data for production of nautical chart is the main objective of bathymetric survey. This research work was conducted to investigate changes in the topography of the northern part of Lagos lagoon (Ikorodu route) and thereby updating the existing chart. Data acquisition was done using satellite imagery, tidal observation and reduction, depth sounding with echo sounder and GPS. Initial processing performed on observed bathymetric data includes spike removal, tidal correction on instantaneous depth and sorting with HYPACK 2008 software. Further processing was done using ArcGIS 10.0 Software. The processed depths were analyzed and presented in form of graphs and charts. A surface descriptor of sediment region for accretion and dredged region was developed using depth differential of two dataset and their sediment volumes were ascertained. From the analysis conducted, there is an indication that accreted sediment volume is greater than Dredged volume and perhaps could have being influenced by the adjoining tributaries of the lagoon water. For further studies, needs for investigating the source of accreted mass through integrated coastal management plan is recommended.", "corpus_id": 73594082, "venue": "", "year": 2015, "author_names": [ "Njokanma Fidelis", "Olusegun Temitope Badejo" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "52078615", "title": "BioTIME: A database of biodiversity time series for the Anthropocene", "abstract": "Motivation The BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of metrics. BioTIME is being developed as a community led open source database of biodiversity time series. Our goal is to accelerate and facilitate quantitative analysis of temporal patterns of biodiversity in the Anthropocene. Main types of variables included The database contains 8,777,413 species abundance records, from assemblages consistently sampled for a minimum of 2 years, which need not necessarily be consecutive. In addition, the database contains metadata relating to sampling methodology and contextual information about each record. Spatial location and grain BioTIME is a global database of 547,161 unique sampling locations spanning the marine, freshwater and terrestrial realms. Grain size varies across datasets from 0.0000000158 km2 (158 cm2) to 100 km2 (1,000,000,000,000 cm2) Time period and grain BioTIME records span from 1874 to 2016. The minimal temporal grain across all datasets in BioTIME is a year. Major taxa and level of measurement BioTIME includes data from 44,440 species across the plant and animal kingdoms, ranging from plants, plankton and terrestrial invertebrates to small and large vertebrates. Software format .csv and .SQL.", "corpus_id": 52078615, "venue": "Global ecology and biogeography a journal of macroecology", "year": 2018, "author_names": [ "Maria A Dornelas", "Laura H Antao", "Faye Moyes", "Amanda E Bates", "Anne E Magurran", "Dusan Adam", "Asem A Akhmetzhanova", "Ward Appeltans", "Jose Manuel Arcos", "Haley Arnold", "Narayanan Ayyappan", "Gal Badihi", "Andrew H Baird", "Miguel Barbosa", "Tiago Egydio Barreto", "Claus Bassler", "Alecia Bellgrove", "Jonathan Belmaker", "Lisandro Benedetti-Cecchi", "Brian J Bett", "Anne D Bjorkman", "Magdalena Blazewicz", "Shane A Blowes", "Christopher P Bloch", "Timothy C Bonebrake", "Susan Boyd", "Matt Bradford", "Andrew J Brooks", "James H Brown", "Helge Bruelheide", "Phaedra Budy", "Fernando Carvalho", "Edward Castaneda-Moya", "Chaolun Allen Chen", "John F Chamblee", "Tory J Chase", "Laura Siegwart Collier", "Sharon K Collinge", "Richard S Condit", "Elisabeth J Cooper", "Johannes H C Cornelissen", "Unai Cotano", "Shannan Kyle Crow", "Gabriella Damasceno", "Claire H Davies", "Robert A Davis", "Frank P Day", "Steven Degraer", "Tim S Doherty", "Timothy E Dunn", "Giselda Durigan", "J Emmett Duffy", "Dor Edelist", "Graham J Edgar", "Robin Elahi", "Sarah C Elmendorf", "Anders Enemar", "S K Morgan Ernest", "Ruben Escribano", "Marc Estiarte", "Brian S Evans", "Tung-Yung Fan", "Fabiano Turini Farah", "Luiz F Loureiro Fernandes", "Fabio Z Farneda", "Alessandra Fidelis", "Robert N L Fitt", "Anna Maria Fosaa", "Geraldo Antonio Daher Correa Franco", "Grace E Frank", "William R Fraser", "Hernando Garcia", "Roberto Cazzolla Gatti", "Or Givan", "Elizabeth Gorgone-Barbosa", "William A Gould", "Corinna Gries", "Gary D Grossman", "Julio R Gutierrez", "Stephen S Hale", "Mark E Harmon", "John Harte", "Gary N Haskins", "Don Henshaw", "Luise Hermanutz", "Pamela Hidalgo", "Pedro Higuchi", "Andrew S Hoey", "Gert Van Hoey", "Annika Hofgaard", "Kristen T Holeck", "Robert D Hollister", "Richard T Holmes", "Mia O Hoogenboom", "Chih-hao Hsieh", "Stephen P Hubbell", "Falk Huettmann", "Christine L Huffard", "Allen H Hurlbert", "Natalia Macedo Ivanauskas", "David Janik", "Ute Jandt", "Anna M Jazdzewska", "Tore Johannessen", "Jill Johnstone", "Julia A Jones", "Faith A M Jones", "Jung Hak Kang", "Tasrif Kartawijaya", "Erin Keeley", "Douglas A Kelt", "Rebecca Kinnear", "Kari Klanderud", "Halvor Knutsen", "Christopher C Koenig", "Alessandra Rocha Kortz", "Kamil Kral", "Linda A Kuhnz", "Chao-Yang Kuo", "David J Kushner", "Claire Laguionie-Marchais", "Lesley T Lancaster", "Cheol Min Lee", "Jonathan S Lefcheck", "Esther Levesque", "David C Lightfoot", "Francisco Lloret", "John D Lloyd", "Adria Lopez-Baucells", "Maite Louzao", "Joshua S Madin", "Borgthor Magnusson", "Shahar Malamud", "I Matthews", "Kent P McFarland", "Brian J McGill", "Diane M McKnight", "William O Mclarney", "Jason Meador", "Peter L Meserve", "Daniel J Metcalfe", "Christoph F J Meyer", "Anders Michelsen", "Nataliya A Milchakova", "Tom Moens", "Even Moland", "Jon Moore", "Carolina Mathias Moreira", "Jorg Muller", "Grace E P Murphy", "Isla H Myers-Smith", "Randall W Myster", "Andrew D Naumov", "Francis C Neat", "James A Nelson", "Michael Paul Nelson", "Stephen Newton", "Natalia Norden", "Jeffrey C Oliver", "Esben Moland Olsen", "Vladimir G Onipchenko", "Krzysztof Pabis", "Robert Pabst", "Alain Paquette", "Sinta Pardede", "David M Paterson", "Raphael Pelissier", "Josep Penuelas", "Alejandro Perez-Matus", "Oscar Pizarro", "Francesco Pomati", "Eric Post", "Herbert H T Prins", "John C Priscu", "Pieter Provoost", "Kathleen L Prudic", "Erkki Pulliainen", "Bramasamdura Rangana Ramesh", "Olivia Mendivil Ramos", "Andrew Rassweiler", "Jose Eduardo Rebelo", "Daniel C Reed", "Peter B Reich", "Suzanne M Remillard", "Anthony J Richardson", "J Paul Richardson", "Itai van Rijn", "Ricardo Rocha", "Victor H Rivera-Monroy", "Christian Rixen", "Kevin P Robinson", "Ricardo Ribeiro Rodrigues", "Denise de Cerqueira Rossa-Feres", "Lars G Rudstam", "Henry A Ruhl", "Catalina S Ruz", "Erica M Sampaio", "Nancy B Rybicki", "Andrew L Rypel", "Sofia Sal", "Beatriz Salgado", "F A M dos Santos", "Ana Paula Savassi-Coutinho", "Sara E Scanga", "Jochen Schmidt", "Robert Lee Schooley", "Fakhrizal Setiawan", "Kwang-Tsao Shao", "Gaius R Shaver", "Sally Sherman", "Thomas W Sherry", "Jacek Sicinski", "Caya Sievers", "Ana Carolina da Silva", "Fernando Rodrigues da Silva", "Fabio Lang da Silveira", "Jasper A Slingsby", "Tracey Irene Smart", "Sara Snell", "Nadejda A Soudzilovskaia", "Gabriel B G Souza", "Flaviana Maluf Souza", "Vinicius Castro Souza", "Christopher D Stallings", "Rowan Stanforth", "Emily H Stanley", "Jose Mauro Sterza", "Maarten Stevens", "Rick D Stuart-Smith", "Yzel Rondon Suarez", "Sarah R Supp", "Jorge Yoshio Tamashiro", "S A Tarigan", "Gary P Thiede", "Simon Thorn", "Anne Tolvanen", "Maria Teresa Zugliani Toniato", "Orjan Totland", "Robert R Twilley", "Gediminas Vaitkus", "Nelson Valdivia", "Martha Isabel Vallejo", "Thomas J Valone", "Carl Van Colen", "Jan Vanaverbeke", "Fabio Venturoli", "Hans M Verheye", "Marcelo Vianna", "Rui P Vieira", "Tomas Vrska", "Con Quang Vu", "Lien Van Vu", "Robert B Waide", "Conor Waldock", "David J Watts", "Sara Lynn Webb", "Tomasz Emanuel Wesolowski", "Ethan P White", "Claire E Widdicombe", "Dustin J Wilgers", "Richard Williams", "Stefan B Williams", "M H Williamson", "Michael R Willig", "Trevor J Willis", "Sonja Wipf", "Kerry D Woods", "Eric J Woehler", "Kyle J A Zawada", "Michael L Zettler", "Thomas Hickler" ], "n_citations": 138, "n_key_citations": 2, "score": 0 }, { "doc_id": "134165752", "title": "Evaluation and application of alternative rainfall data sources for forcing hydrologic models in the Mara Basin", "abstract": "Accurate and spatially distributed rainfall data are crucial for a realistic simulation of the hydrological processes in a watershed. However, limited availability of observed hydro meteorological data often challenges the rainfall runoff modelling efforts. The main goal of this study is to evaluate the Climate Forecast System Reanalysis (CFSR) and Water and Global Change (WATCH) rainfall by comparing them with gauge observations for different rainfall regimes in the Mara Basin (Kenya/Tanzania) Additionally, the skill of these rainfall datasets to simulate the observed streamflow is assessed using the Soil and Water Assessment Tool (SWAT) The daily CFSR and WATCH rainfall show a poor performance (up to 52% bias and less than 0.3 correlation) when compared with gauge rainfall at grid and basin scale, regardless of the rainfall regime. However, the correlations for both CFSR and WATCH substantially improve at monthly scale. The 95% prediction uncertainty (95PPU) of the simulated daily streamflow, as forced by CFSR and WATCH rainfall, bracketed more than 60% of the observed streamflows. We however note high uncertainty for the high flow regime. Yet, the monthly and annual aggregated CFSR and WATCH rainfall can be a useful surrogate for gauge rainfall data for hydrologic application in the study area.", "corpus_id": 134165752, "venue": "", "year": 2018, "author_names": [ "Tadesse Alemayehu", "Fidelis Kilonzo", "Ann Van Griensven", "Willy Bauwens" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "55865913", "title": "Evolutionary Model for Virus Propagation on Networks", "abstract": "The significant research activity into the logarithmic analysis of complex networks will yield engines that will minimize virus propagation over networks. This task of virus propagation is a recurring subject and design of complex models will yield solutions used in a number of events not limited to and include its propagation, network immunization, resource management, capacity service distribution, dataflow, adoption of viral marketing amongst others. Machine learning, stochastic models are successfully employed to predict virus propagation and its effects on networks. This study employs SI models for independent cascade and the dynamic models with Enron dataset (of e mail addresses) and presents comparative result using varied machine models. It samples 25,000 e mails of Enron dataset with Entropy and Information Gain computed to address issues of blocking, targeting and extent of virus spread on graphs. Study addressed the problem of the expected spread immunization and the expected epidemic spread minimization; but not the epidemic threshold (for space constraint)", "corpus_id": 55865913, "venue": "", "year": 2015, "author_names": [ "A Ojugo", "Fidelis Obukowho Aghware", "R Yoro", "M O Yerokun", "A Eboka", "Christiana Nneamaka Anujeonye", "Fidelia Ngozi Efozia" ], "n_citations": 4, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "209730768", "title": "PENGARUH TEKANAN KOMPRESI TERHADAP SIFAT FISIK FAST DISINTEGRATING TABLET (FDT) ANTASIDA", "abstract": "Antacids is the combination of aluminium hydroxide and magnesium hydroxide which used to medicate gastritis widely. The stock of antacids in the markets is valued less efficient and practical when it is used. This problem can be prevented by making the stock of Fast Disintegrating Tablet (FDT) FDT is the tablet that is designed to ease the tablet disintegrated in saliva with the help of main FDT's material, namely superdisintegrant. Superdisintegrant that is used in this research is Sodium Starch Glycolate (SSG) and avicel PH 101 which has been got optimum formula with 38,79% of concentration SSG and 101,2% of avicel PH 101. This research aims to know the effect of compression pressure facing the characteristic of FDT antacids tablet. This formula is made of the same composition to treat three kinds of formula with different compression pressure to result in hardness 4 5 kg, 6 7 kg, and 8 9 kg by using wet granulation method. This tablet is verified by the characteristic of tablet and acid neutralizing capacity (ANC) The total of the data is analyzed with descriptive and statistic using ANOVA, so the effect of compression pressure in the characteristic of tablet and ANC will be known. The result of the research shows that the high compression pressure increasing hardness and friability. However, it decreases disintegration time and ANC's potency.", "corpus_id": 209730768, "venue": "", "year": 2019, "author_names": [ "Zahra Afifah" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "197665830", "title": "Sonication accelerated formation of Mg Al phosphate layered double hydroxide via sol gel prepared mixed metal oxides", "abstract": "Single phase magnesium aluminium layered double hydroxide (LDH) intercalated with dihydrogen phosphate was successfully produced by hydration of nanopowder of the respective mixed metal oxide (MMO) obtained using sol gel based method followed by a two step anion exchange hydroxide to chloride and chloride to phosphate. The MMO with the metal cation ratio of Mg/Al 2:1 was prepared using the aqueous sol gel method. Processes of the parent Mg2Al OH LDH formation and the successive anion exchanges, ON Cl and Cl H2PO4 were considerably accelerated via the application of high power (1.5 kW) ultrasound. The crystalline phases formed at all stages of the Mg2Al H2PO4 LDH production were characterized using X ray diffraction, scanning electron microscopy, scanning transmission electron microscopy, inductive coupled plasma optical emission spectroscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Based on the data of chemical analysis and the XRD data, the type of the intercalated phosphate anion was determined and the arrangement of this anion in the interlayer was modelled.", "corpus_id": 197665830, "venue": "Scientific Reports", "year": 2019, "author_names": [ "Denis Sokol", "Daniel E L Vieira", "Aleksej Zarkov", "Mario G S Ferreira", "Aldona Beganskiene", "Vasili V Rubanik", "Aleksandr D Shilin", "Aivaras Kareiva", "Andrei N Salak" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "195188051", "title": "Synthesis of nickel based layered double hydroxide (LDH) and their adsorption on carbon felt fibres: application as low cost cathode catalyst in microbial fuel cell (MFC)", "abstract": "ABSTRACT Following their successful utilization as novel bioanodes in Microbial Fuel Cells (MFCs) Layered Double Hydroxide (LDH) were tested in the present investigation, as promising cathodes to reduce electrons coming from oxidation of organic matter in the anode compartment, in the presence of oxygen used as successful oxidant. Therefore, the LDH samples Ni3Al LDH with the ionic ratio Ni2+/Al3+ equal to 3, were synthesized and added by adsorption to Carbon Felt (CF) fibres. They were then stored separately in three electrolyte solutions KCl, NiCl2 and AlCl3 used as catholytes in the MFCs. Effects of the active cationic sites located inside the Ni3Al LDH on these electrolytes, were discussed in terms of energies produced by these MFCs. The structure and morphology of the synthesized LDH, were studied by using the analytical techniques XRD, FTIRS and SEM, while the electrode performances of the LDH electrodes were investigated with the electrochemical methods CV and EIS. It was revealed that the CF modified with Ni3Al LDH cathode and conditioned in the NiCl2 electrolyte solution yielded the highest energy harvesting for the MFC (i.e. 3.2 uW/cm2) This power density output was similar to previous clean one compartment MFC. However, it was less expensive than an Enzymatic Fuel Cell (45 uW/cm2) making in evidence the highest cost of the material. Thus, by taking into account these encouraging findings, the low cost materials used in MFCs held great promise for practical application in electrochemical power devices and therefore fruit waste treatment. Abbreviations: ACFC: Air Cathode Fuel Cell; ADEFC: Alkaline Direct Ethanol Fuel Cell; AFC: Alcaline Fuel Cell; BET: Brunauer Emmett Teller; BFC: Biological Fuel Cell; CF: Carbon Felt; CV: Cyclic Voltammetry; DGFC: Direct Glucose Fuel Cell; DMFC: Direct Methanol Fuel Cell; EFC: Enzymatic Fuel Cell; EIS: Electrochemical Impedance Spectroscopy; FC: Fuel Cell; FTIR: Fourier Transform Infra Red spectroscopy; LDH: Layered Double Hydroxide; MEC: Microbial Electrolysis Cell; MFC: Microbial Fuel Cell; Mg Al LDH: Layered Double Hydroxide Magnesium Aluminium Carbonate; Ni Al LDH: Layered Double Hydroxide Nickel Aluminium; OCP: Open Circuit Potential; SEM: Scanning Electron Microscope; TG/DTA: ThermoGravimetric and Differential Thermal Analysis; XRD: X Ray Diffraction. GRAPHICAL ABSTRACT", "corpus_id": 195188051, "venue": "Environmental technology", "year": 2019, "author_names": [ "Meriem Djellali", "Mostefa Kameche", "Hakima Kebaili", "Mohamed Mustapha Bouhent", "Abdellah Benhamou" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "182877391", "title": "The graphene oxide/magnesium aluminium bimetallic hydroxides composite used as solid phase extractant for determination of monoaromatic hydrocarbons in wastewater", "abstract": "ABSTRACT The graphene oxide (GO) and the magnesium aluminium bimetallic hydroxides composite (GO/Mg Al LDH) was used as a solid phase extractant for determination of toluene, ethylbenzene, p xylene, m xylene, o xylene, 1,3,5 trimethylbenzene and 1,2,4 trimethylbenzene in wastewater by gas chromatography mass spectrometry analytical method. When the amount of solid phase extractant was 1.5 g, the extraction time was 6 min, and the elution with 2 mL of chloroform for 3 min, seven monoaromatic hydrocarbons (MAHCs) in 500 mL of water sample can be well extracted and separated. Under the optimised experimental conditions, the mass concentration of each component in the range of 0.01 5 ng/mL has a good linear relationship with the peak area, the coefficients of determination are all greater than 0.995. The relative standard deviation (n 5) and the method detection limit range are 2.9 7.1% and 0.0005 0.005 ng/mL, respectively. The seven of MAHCs in Dongfengqu River and laboratory wastewater of Chengdu University of Technology can be effectively detected, the recovery rate and the relative standard deviation (n 5) are 83.0 110.0% and 3.7 9.4% respectively. For the first time, the GO/Mg Al LDH composite was used as a solid phase extraction material, and seven MAHCs in water were successfully determined by GC MS. The detection method is established with low detection limit and high reproducibility which can meet the measurement requirements of trace MAHCs in wastewater.", "corpus_id": 182877391, "venue": "International Journal of Environmental Analytical Chemistry", "year": 2019, "author_names": [ "Peng Kang", "Xiaping Zhu", "Hongbao Zuo" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "156050085", "title": "Influence of Varying Synthetic Routes on the Physicochemical Properties of Mg Al CO3 and Zn Al CO3 Hydrotalcite Like Compounds: A Comparative Study", "abstract": "Magnesium Aluminium Carbonate Hydrotalcite like Compound (Mg Al CO3 HTlc) and Zinc Aluminium Carbonate Hydrotalcite like Compound (Zn Al CO3 HTlc) with Mg/Al and Zn/Al atomic ratio 2:1 was synthesized by co precipitation and urea hydrolysis methods. Their physicochemical properties were studied using powder X ray diffraction (PXRD) X ray fluorescence spectrophotometry (XRF) Fourier transform infrared (FTIR) and Thermogravimetry (TG) and Differential Thermal Analysis (DTA) involving evolved gas analysis (EGA) The PXRD of the synthesized material showed that the crystallinity is influenced by the type of synthetic method and can affect the properties of the hydrotalcite like compounds. The TG, DTA and EGA results showed that three steps of mass loss occurred corresponding to the release of gallery water, structural water and carbon dioxide (from carbonate decomposition) respectively. Thermal treatment up to about 500oC and beyond transforms them into nonstoichiometric metal stable oxides (MgO and ZnO) whose crystallinity is lower than that of the precursor and then into stable spinel with no further mass loss following the transformation. Derivatives of urea hydrolysis method gave better ordered and more crystalline Mg2AlCO3 HTlc but with smaller unit cell. Variation in synthesis route can influence the mode of stacking of the layers, order of the interlayer anions and water molecules in the gallery space and attraction between the interlayer anions and the hydroxyl ions of the metal hydroxide layers.", "corpus_id": 156050085, "venue": "European Scientific Journal ESJ", "year": 2019, "author_names": [ "Selina Ilunakan Omonmhenle", "Ian J Shannon" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "86532971", "title": "Magical Myth of Magic Mouth Wash", "abstract": "One of the most challenging aspects of treating patients with chemotherapy is the management of the associated complications. Recurrent infections, refractory cytopenias, frequent transfusions, antibiotic resistance etc. are the commonly encountered hurdles. During the chemotherapy phase, maintaining good nutritional balance of the patients undergoing treatment is of utmost importance. Poor oral intake in cancer patients may be due to multiple reasons, one of them is chemoradiotherapy induced oral mucositis (CRIOM) In many cases, CRIOM can be worse enough to reduce the dose of drugs for subsequent cycles. CRIOM has many direct and/or indirect negative impacts like reducting oral intake thereby contributing to malnutrition, serving as a potential ground of infection and port of entry for microbes, precipitating hypoalbuminemia thereby aggravating the toxicities of chemotherapeutic drugs. Magic mouth wash (MMW) or equivalent formulations are commonly prescribed by oncologists as a potential remedy for CRIOM related discomfort. By virtue of its name, there is false perception about the efficacy of MMW. It is important for both the patients and clinicians not to expect any 'magic' out of MMW. Currently, there are at least twenty plus formulations marketed under various trade names. There is no standard formula available for MMW and different institutions have their own formulations. Recently, Chan et al. did a survey involving US based pharmacists from different institutions [1] According to their survey, the most common ingredients used to prepare MMW were diphenhydramine, viscous lidocaine, corticosteroids, magnesium hydroxide/aluminium hydroxide, and nystatin. Uberoi et al. through their paper pointed out the concerns with regards to cost of MMW, its effectiveness and side effects [2] Concern about the effectiveness of MMW is not new and many studies in past have shown no superior outcome when compared to the home made solutions [2] It has ingredients with local anaesthetic, anti histaminic and antacid properties and hence with major actions being local, in true terms we should not expect any magic from MMW. Multinational Association of Supportive Care in Cancer and International Society of Oral Oncology (MASCC/ISOO) Clinical Practice Guidelines for mucositis do not support the use of mixed compound formulated solutions [3] Panel recommended cryotherapy, low level laser therapy, patient controlled analgesia with morphine and benzydamine mouthwash in various clinical scenarios (Level of evidence I/II) Benzydamine, in addition to its NSAID property also inhibits thromboxane and prostaglandin biosynthesis thereby having local mucosal healing property [4] As mentioned by Uberoi et al. purchasing price of an ounce of pharmacy formulated MMW is huge. This subconciously raises the expectations of patients from MMW who in most cases pay out of their own pocket [2] As a responsible physician, it is our responsibility to educate our patients about the expectations while using MMW. Many patients are also bothered from the numbness and drowsiness in association with MMW use and hence should be made aware of the possible side effects (2) Many pharmacies have their local formulations incorporating additional ingredients like clotrimazole, metronidazole etc. which themselves are very sour to taste [5] There is no Kamal Kant Sahu drkksahu85@gmail.com", "corpus_id": 86532971, "venue": "Indian Journal of Hematology and Blood Transfusion", "year": 2019, "author_names": [ "Kamal Kant Sahu", "Ajay Kumar Mishra", "Akil Sherif" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "104751497", "title": "RANITIDINE CONTROLLED RELEASE ANTI REFLUX SUSPENSION FOR GASTRO OESOPHAGEAL REFLUX DISEASE AND IT'S IN VITRO EVALUATION", "abstract": "Objective: The aim of this work was to develop triple action controlled release anti reflux suspension of ranitidine and its in vitro evaluation of anti reflux and controlled release properties. Methods: The formulation was optimized using sodium alginate as a gelling agent along with calcium carbonate, sodium bicarbonate, magnesium hydroxide, aluminium hydroxide as alkalizing agents and colloidal microcrystalline cellulose (MCC) as a suspending agent at various concentrations and arrived at an optimized formulation for its best quality attributes. To avoid initial release in water before administration, ranitidine coated MCC sphere was incorporated into powder formulation and subjected to in vitro characteristics like raft strength, acid neutralizing capacity, pH, viscosity and dissolution study. The obtained results were assessed using Minitab 17 statistical software to conclude the study design. Results: Formulation containing 300 mg of ranitidine along with 750 mg alginate has shown better anti reflux characteristics like raft strength 18+ 2g, acid neutralizing capacity 17+ 1 mEq compared to other formulations. This formulation has also shows zero order controlled release in the simulated gastric fluid (SGF) up to 10 h compared to the formulation without alginate. Further, to this optimized formulation has shown negligible change in the assay of ranitidine even after 3 mo at 40 degC temperature and 75% RH. Conclusion: The developed stable sustained release powder for suspension has the combined therapeutic efficacy as an antacid and anti reflux drug suitable for the management and treatment of gastro oesophageal reflux disease (GERD) unlike the existing drugs possessing only reflux resistance action.", "corpus_id": 104751497, "venue": "", "year": 2019, "author_names": [ "Sangmesh Raosaheb Torne", "Angappan Sheela", "Nallani Chakravarthula Sarada" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "145047085", "title": "An experimental and numerical model for the release of acetone from decomposing EVA containing aluminium magnesium or calcium hydroxide fire", "abstract": "Recent studies have identified acetone as an unexpected pyrolysis product of EVA containing aluminium or magnesium hydroxide fire retardants. It is thought that the freshly formed, open pored, metal oxide, a thermal decomposition product of the metal hydroxide, traps acetic acid released from EVA and catalyses its conversion to acetone. Such a ketonisation reaction is well established but the intermediate steps that result in acetic acid conversion to acetone in the presence of a metal oxide, trapped within the polymer matrix, have not been reported. This study used three model metal acetates: aluminium acetate, magnesium acetate and calcium acetate, to chemically represent the proposed metal acetate intermediate complexes. This provides crucial information on the kinetics of acetic acid trapping and subsequent acetone release during decomposition studied by TGA FTIR, which has been used to generate kinetic models within a pyrolysis programme (ThermaKin) in order to quantitatively understand the processes occurring in fire retardant EVA. The benefit of using metal acetates is that they are simple enough to allow isolation of the chemical process of interest from the complications of acetic acid release from EVA and transport through the polymer matrix.", "corpus_id": 145047085, "venue": "", "year": 2019, "author_names": [ "Diana Eid Rhebatb", "Artur Witkowskia", "Thierry Richard", "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "223481243", "title": "Increase of service life of friction units of machines and mechanisms with the use of serpentine tribopreparations", "abstract": "This paper describes the creation of a stable mineralogy and tribological composition based on large tonnage wastes of the Saranovsky mining enterprise. The tributary composition 'Saranovsky' is a particle of the lizardite mineral the main tribological component of serpentine. Its crystals are formed in the monoclinic system. Tribo composition was obtained by grinding the feedstock on a spherical planetary mill to nanoscale values. The presence of strong surface molecular forces of the nanopowder leads to the aggregation of small particles into larger particles and the formation of conglomerates with sizes ranging from a few to tens of microns. The study of the diffractogram showed that it contains: (Mg, Al)3(Si, Fe)2O5 aluminium iron magnesium silicon, lizardite 1T the main mineral of the serpentine group; NiSi2O5(OH)4 nickel silicate hydroxide, pecoratite 2Mc1 is a secondary mineral of the serpentine group, as an impurity, and Ni5Al4O11*18H2O is an impurity of nickel aluminium oxide hydroxide. Tests have shown that with the introduction of the Saranovsky composition into mineral engine oil of the M 10G2K brand, its tribotechnical characteristics correspond to the world's best Mobil engine oil with a friction coefficient of about 0.04. The 250 hour operational tests of the tribo composition at FGBNU VNIITiN in the diesels of three Russian tractors showed a decrease in fuel consumption by 5 8% oil loss by 10 12% gas opacity by 8 15% and iron content in oils by 20 25% The features of the formation on the friction surfaces of carbon containing coatings and their properties are also investigated.", "corpus_id": 223481243, "venue": "", "year": 2019, "author_names": [ "S N Sharifullin", "M N Filkov", "A V Dunaev", "I B Trishkin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "212572840", "title": "In Vitro Evaluation of Antiulcer Activity of A Polyherbal Mixture", "abstract": "The present study was performed to assess the in vitro acid neutralizing capacity and H /K ATPase inhibition activity of a chloroform extract of polyherbal mixture. In acid neutralizing capacity (ANC) the extract significantly reduced ANC to 7.3 at concentration of 1500mg as compared to 13.7 with standard Aluminium hydroxide+Magnesium hydroxide (500mg) While in H /K ATPase inhibition activity, the extract showed maximum percentage inhibition of 63.78% at the concentration 100mg as compared to 69.76% with standard Omeprazole. The IC 50 value of chloroform extract of polyherbal mixture is 53.43 mg in comparison with standard Omeprazole 56.45 mg. The study reveals that the chloroform extract of polyherbal mixture may contain compounds possessing antacid and enzyme inhibition activity and thus can be used as an alternative medicine for gastrointestinal diseases.", "corpus_id": 212572840, "venue": "", "year": 2019, "author_names": [ "Sumia Fatima", "Dr C Ramesh", "Abdul Saheel Qureshi" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "218793615", "title": "Russian natural gas exports: An analysis of challenges and opportunities", "abstract": "Abstract This study provides a comprehensive, updated, and refined analysis of the challenges and opportunities for Russian natural gas exports based on recent statistical data, academic publications, and media sources. The paper addresses the lack of continuity in studies within the topic since the recent changes are not reflected well enough in the current peer reviewed literature. In order to understand the perspectives regarding Russian natural gas export in global natural gas markets, we consequently examine the current layout of the global natural gas markets, and challenges and opportunities for Russian natural gas exports. The analysis shows that the U.S. natural gas market is closed for Russian exports. In the European market, Russia is experiencing difficulties in increasing its export shares, or even maintaining current levels, owing to various macroeconomic and geopolitical challenges. Asian markets such as China, India, Japan, and South Korea, are the most promising destinations for future Russian natural gas exports. Despite strong geopolitical challenges and high competition globally, Russia should seek maintaining current export levels in the European market, while implementing a win win export strategy, and secure its future export shares on the Asian markets. The results of the study can be used for scenario and planning purposes, and be useful for policy makers and industry practitioners.", "corpus_id": 218793615, "venue": "", "year": 2020, "author_names": [ "Vladimir G Kutcherov", "Maria Morgunova", "V V Bessel", "Alexey Lopatin" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "225770190", "title": "The United States, Russia, and Syria's chemical weapons: a tale of cooperation and its unravelling", "abstract": "This article analyzes the drivers of US Russian cooperation in the disarmament of Syria's declared chemical weapons (CW) in 2013 14, emphasizing the primary importance of credible coercion vis a vi.", "corpus_id": 225770190, "venue": "", "year": 2020, "author_names": [ "Hanna Notte" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "216193818", "title": "INTERESTS OF RUSSIA AND TURKEY IN MILITARY TECHNICAL COOPERATION", "abstract": "For several centuries, Turkey remains an important subject of international politics for Russia. ThisA is due, firstly, to the geographical proximity of the two states, and secondly, to the desire to ensureA internal security and regional security, in which Russia and Turkey have been actively involvedA in recent years. The fight against terrorism, namely with such terrorist organizations as ISIS, etc. isA one of the significant areas in the cooperation of the two countries. Turkey needs to developA partnerships in the military technical sphere with Russia, which has rich experience, to ensureA security in the country. This article is devoted to the study of cooperation between Russia andA Turkey in the military technical sphere. Statistical material characterizing the state of the globalA arms market is given, in the course of the analysis, leaders in the global arms market wereA identified, and positions in Russia and Turkey were shown; the role of the Russian and TurkishA military industrial complex for the domestic economy is defined; the previous experience ofA cooperation in the military industrial complex, and the agreements between Russia and Turkey areA analyzed, the current state of military technical cooperation between Russia and Turkey isA assessed. As a result of the study, factors that influence the development of bilateral ties wereA identified and promising areas of military technical cooperation were proposed.", "corpus_id": 216193818, "venue": "", "year": 2020, "author_names": [ "M Sechkin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216325015", "title": "Tendencies of export and import of steel industry products of Russia within 9 months of 2019", "abstract": "Structure of the Russian export and import of steel industry products presented by results of 9 months of 2019 operation. It was shown, that the total share of pig iron, ferroalloys and semi products (40.3% in the ferrous metals export from Russia is practically the same as the share of rolled products and steel pipes (39.4% whereas the shares in the import structure were 7.7 and 75% accordingly. The share the far abroad countries in the Russian export and import of finished steel products (in natural terms) accounted for 80.6 and 28.7% accordingly, while the share of CIS countries 19.4 and 71.3% accordingly. For 9 months of 2019 the Russian export of semi products declined by 10.9% comparing with the analogue period of 2018 and accounted for 10.9 m tons. 54.6% of the total export shipping of semi products were directed to Mexico, Turkey, Egypt and Taiwan. Within the nearest years the Russian export of semi products and billets, in particular, will be effected by the further development of the semi products production in in the countries of Middle East, Turkey, Vietnam and India. The domestic market remained to be more attractive for many Russian companies. For the 9 months of 2019, export of long and flat products accounted for 3 and 5.7 m tons accordingly, declining comparing with the analogue period of the previous year by 11 and 15.6% accordingly. Import of long and flat products decreased by 12 and 0.5% accounting for 1.0 and 2.9 m tons accordingly. By the results of 9 months of 2019, import declined and export shipping of coated sheet increased. Taking into account the expansion of steel grades assortment by Russian plants, increase of capacities for production of sheet with different coatings, this tendency is likely to remain.", "corpus_id": 216325015, "venue": "", "year": 2020, "author_names": [ "N G Zinov'eva" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "211439756", "title": "Can Russia's food exports reach $45 billion in 2024?", "abstract": "ABSTRACT In May 2018 President Putin challenged the agricultural sector to increase the value of food exports to $45 billion by 2024, up from $26 billion in 2018. The article surveys opportunities for increasing the export of grain, meat, and dairy. Supply and demand factors for Russian food exports are examined. Obstacles to the expansion of food exports are also considered. Russia's export model is supported by significant state interventions in the agricultural sector. The article concludes that despite significant obstacles, there is a reasonable chance that Putin's target goal can be reached.", "corpus_id": 211439756, "venue": "Post Communist Economies", "year": 2019, "author_names": [ "Stephen K Wegren" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "213079702", "title": "'National pride is at stake. Russia, China, United States race to build hypersonic weapons", "abstract": "", "corpus_id": 213079702, "venue": "", "year": 2020, "author_names": [ "Richard A Stone" ], "n_citations": 2, "n_key_citations": 1, "score": 0 }, { "doc_id": "213375324", "title": "Russia's Nuclear Weapons: Doctrine, Forces, and Modernization [Updated January 2, 2020]", "abstract": "", "corpus_id": 213375324, "venue": "", "year": 2020, "author_names": [ "Amy F Woolf" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "226429995", "title": "Arms Trade Cooperation", "abstract": "This chapter reviews the development and obstacles to military security cooperation between Russia and South Korea, primarily focusing on the arms trade. It offers a unique perspective of the arms trade, departing from the traditional political and military security interpretation and seeing it instead from a non traditional economic security approach. It begins with a general discussion of the Russian arms trade in the post Soviet period and then focuses on the two arms trade projects called \"Brown Bear\" projects. The chapter considers the implications of the arms trade for bilateral Russian South Korean relations and illustrates how the arms trade can enhance both the traditional and non traditional national security of Russia and South Korea.", "corpus_id": 226429995, "venue": "", "year": 2020, "author_names": [ "Se hyun Ahn" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "211395412", "title": "DEVELOPMENT OF ENERGY COOPERATION BETWEEN RUSSIA AND CHINA", "abstract": "The research analyses the question of to what extent the focus on state projects between Russia and China is based on the Russian desire to switch from an economy that is dependent on natural resources. Through the analysis of existing capabilities of the Russian companies to propose opportunities for innovative and technological projects that can be used in the long run. At the same time, the research will focus on energy trends and their presence in Russian and Chinese energy markets.", "corpus_id": 211395412, "venue": "", "year": 2020, "author_names": [ "Jaehyung An", "Mikhail L Dorofeev", "Shouxian Zhu" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "226742464", "title": "Russian Arms Exports", "abstract": "", "corpus_id": 226742464, "venue": "", "year": 2020, "author_names": [ "Julian Cooper" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "150162408", "title": "Physical fitness of amateur paddle tennis players: comparisons between different competitive levels", "abstract": "Padel is widely practiced racket sport, although there is scanty data comparing competitive levels and differences between the sexes. Physical fitness of padel players was compared, according to sex and level. The research involved 35 people (age 29.6 2.9 years, practice 6.8 4.9 years) 13 of the first, 15 of the second and 7 of the third category. Aerobic power (PAM) with Yo YoIR1, agility with handball agility specific test (HAST) muscular power with vertical jump and 3kg medicineball throw, and handgrip endurance strength (HES) with dynamometer were measured. The variables PAM, HAST, vertical jump, throttle and FIPM were significantly different between genders. In addition, in the male category, players in the upper category had lower heart rate scores after Yo YoIR1 as well as distance traveled, throttle and FIPM maximum, while in females the superior category was better in the variables distance traveled in Yo YoIR1 and vertical jump. On the other hand, in both sexes, players of superior categories presented greater time of practice. Amateur padel players with a higher competitive level do not present higher physical fitness, but present longer practice time.", "corpus_id": 150162408, "venue": "", "year": 2018, "author_names": [ "Camila Borges Muller", "Fabricio Boscolo Del Vecchio" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "169423089", "title": "Comparison of Flexibility, Muscular Endurance, and Speed Among Veteran Male Tennis Player Between Clubs", "abstract": "The racquet sport is recommended to the veteran players to gain health benefits and sports performance. Elderly also compete in a tennis tournament, where fitness components are crucial for them to excel. The purpose of this study was to compare the flexibility, muscular endurance, and speed among veteran male tennis players between clubs. The total number of subjects were 30 (N 30) half of the subjects were from Majlis Perbandaran Kota Bharu and the other half were from Kelantan Golf Country Club. Several tests were conducted according to the following sequences which are (i) weight and height test, (ii) chair sit and reach test for flexibility, (iii) maximum push up test for muscular endurance test, and (iv) ten meters sprint test for speed. The result shows that there is a significant difference in flexibility (p 0.05) In conclusion, it can be concluded that flexibility shows significant difference while muscular endurance and speed shows no significant difference. Many possibilities might affect the findings such as the type of training, the frequency of training, and daily activities. The specific training program would be meaningful to improve the performance of elderly according to appropriate training principles.", "corpus_id": 169423089, "venue": "", "year": 2018, "author_names": [ "Mohd Hanifa Sariman", "Nik Nabihah Nik Yusof", "Mohd Zulkhairi Mohd Azam", "Wan Mohd Norsyam Wan Norman", "Fatin Aqilah Abdul Razak" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "63315854", "title": "Study on Decision making of Tennis Fitness Training Focus", "abstract": "In order to scientifically determine the focus of training for tennis coaches and athletes training decisions. The test method,coefficient of variation,and TOPSIS method are integrated to process Zhejiang tennis players' physical test data.,The men's team training focus order are successivestrength,power,agility,speed,and endurance; Similarly,girls training focus order are strength,power,agility,endurance,speed; Finally,each athlete should be strengthened to sort index. The coefficient of variation and the results of TOPSIS method is simple,saving resources,suitable for different projects,different training indicators to effectively monitor the training process.", "corpus_id": 63315854, "venue": "", "year": 2015, "author_names": [ "Chen Xin-ru" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "149142180", "title": "A comparative study of selected motor fitness components among badminton table tennis and squash", "abstract": "The purpose of this study was to compare selected motor fitness component levels among the Uttarakhand state level racket sports players. one hundred fifty (150) subjects, 50 badmintons, 50 table tennis and 50 squash players were selected from the Uttarakhand State for this study. The age of the selected subjects ranges from 16 to 19 years. Motors fitness tests were administered to find out the various motor fitness components (muscular power, strength and endurance) among the different racket sports. For statistical analysis and interpretation of data 'F' test (Anova) was conducted to test for significatant difference (0.05) among the groups. Result showed that Badminton players were comparatively better than table tennis and squash sports player in all the selected motor fitness components.", "corpus_id": 149142180, "venue": "", "year": 2017, "author_names": [ "Satish K Singh", "", "Hari Singh", "Amit Singh" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "201865204", "title": "Relationship Between Selected Fitness Components of Sarawak Tennis Players", "abstract": "In tennis, sport specific technical skills are the elements of a successful performance. It also requires a complex interaction of several fitness components and metabolic pathways. A tennis match is characterized as intermittent whole body effort, alternating a few seconds intense activity and short recovery activity interrupted by several resting periods with a typical average match time of 1.5 hours up to more than 5 hours. The purpose of the study was to develop and measure the fitness components of Sarawak tennis players. Thirteen young trained players in the age bracket 15 to 21 years old with experience of at least 2 years in playing tennis and have participated in at least SUKMA level were tested for eight fitness tests. A Pearson correlation test was conducted to examine the relationships among the variables. Significant correlations were found between all the variables (p .05) except for, flexibility and muscular strength, muscular endurance, muscular power, agility and speed endurance (p .05) Muscular strength for the left hand was not significantly correlated with speed and aerobic capacity (p .05) There was no significant relationship between speed and muscular power, agility and speed, muscular endurance and aerobic capacity (p .05) Additionally, speed and speed endurance showed no significant relationship with muscular endurance (p 0.5) This study quantifies physical fitness profile using the tennis specific tests that can help to upgrade Sarawak tennis players' performance by examining the relationships among all the fitness components. The findings would be beneficial for coaches to assess their trainees in tennis sports as well as be used as the guidelines for selection purposes.", "corpus_id": 201865204, "venue": "", "year": 2017, "author_names": [ "Mohamad Zaini", "Patricia Pawa Pitil" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "32436427", "title": "Impact of Fitness Characteristics on Tennis Performance in Elite Junior Tennis Players", "abstract": "Abstract Ulbricht, A, Fernandez Fernandez, J, Mendez Villanueva, A, and Ferrauti, A. Impact of fitness characteristics on tennis performance in elite junior tennis players. J Strength Cond Res 30(4) 989 998, 2016 The impact of fitness characteristics on tennis performance in adolescent players is not clearly understood. Therefore, the aim of the present study was to test whether physical characteristics are related to players' competitive level (i.e. national youth ranking) A secondary aim was to compare adolescent tennis players by performance level (i.e. regional selected players and the national team) A total of 902 male and female junior players (aged, 11 16 years) in Germany were evaluated using a physical testing battery: grip strength; countermovement jump; 10 and 20 m sprint; tennis specific sprint; overhead, forehand, and backhand medicine ball throws (MBT) serve velocity and tennis specific endurance test (hit and turn tennis test) Results showed that serve velocity (r 0.43 to 0.64 for female subjects r 0.33 to 0.49 for male subjects and upper body power (e.g. MBT r 0.26 to 0.49 r 0.20 to 0.49 were the most correlated predictors of tennis performance (i.e. national youth ranking) in both female and male tennis players. Moreover, national selected players showed better performance levels than their regional counterparts, mainly in the most predictive physical characteristics (i.e. serve velocity: effect size [ES] 0.78 1.04 ES 0.92 1.02 MBT: ES, 0.66 0.88 ES, 0.67 1.04 and specific endurance (ES, 0.05 0.95 ES, 0.31 0.73 The present findings underline the importance of certain physical attributes, especially serve velocity and strength and power related variables (upper body) and suggest the need to include these parameters in the area of training, physical testing, and talent identification of young tennis players.", "corpus_id": 32436427, "venue": "Journal of strength and conditioning research", "year": 2016, "author_names": [ "Alexander Ulbricht", "Jaime Fernandez-Fernandez", "A Mendez-villanueva", "Alexander Ferrauti" ], "n_citations": 61, "n_key_citations": 5, "score": 0 }, { "doc_id": "36220070", "title": "Aerobic Fitness and Technical Efficiency at High Intensity Discriminate between Elite and Subelite Tennis Players.", "abstract": "The aim of this study was to determine whether selected physiological, performance and technical parameters derived from an on court test are capable of discriminating between tennis players of national and international levels. 38 elite and subelite tennis players were divided into international level (INT, n=8) and national level players (NAT, n=30) They all performed a specific endurance field test, and selected physiological (maximum oxygen uptake [V.O2max] and ventilatory thresholds [VT1 and VT2] performance (test duration, final stage and hits per test) and technical (technical effectiveness [TE] parameters were compared. INT showed greater V.O2max, VO2 at VT2 (ml*kg( 1)*min( 1) test duration (s) final stage (no. hits per test (no. and TE of successful hits) as compared with NAT (p<0.05) At high exercise intensity (stages 5 and 6) the INT achieved better TE than NAT (p=0.001 0.004) and the discriminant analyses showed that these technical parameters were the most discriminating factors. These results suggest that this specific endurance field test is capable of discriminating between tennis players at national and international levels, and that the better aerobic condition of the INT is associated with better technical efficiency at higher exercise intensities.", "corpus_id": 36220070, "venue": "International journal of sports medicine", "year": 2016, "author_names": [ "Ernest Baiget", "Xavier Iglesias", "Ferran A Rodriguez" ], "n_citations": 8, "n_key_citations": 1, "score": 0 }, { "doc_id": "188960057", "title": "Tennis specific endurance diagnostic using an acoustically controlled fitness test on tennis court", "abstract": "Tennis specific endurance diagnostic using an acoustically controlled fitness test on tennis court", "corpus_id": 188960057, "venue": "", "year": 2009, "author_names": [ "Dario Novak", "Petar Barbaros Tudor", "Andrej Tonejc" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "16592545", "title": "Tennis Play Intensity Distribution and Relation with Aerobic Fitness in Competitive Players", "abstract": "The aims of this study were (i) to describe the relative intensity of simulated tennis play based on the cumulative time spent in three metabolic intensity zones, and (ii) to determine the relationships between this play intensity distribution and the aerobic fitness of a group of competitive players. 20 male players of advanced to elite level (ITN) performed an incremental on court specific endurance tennis test to exhaustion to determine maximal oxygen uptake (VO2max) and the first and second ventilatory thresholds (VT1, VT2) Ventilatory and gas exchange parameters were monitored using a telemetric portable gas analyser (K4 b2, Cosmed, Rome, Italy) Two weeks later the participants played a simulated tennis set against an opponent of similar level. Intensity zones (1: low, 2: moderate, and 3: high) were delimited by the individual VO2 values corresponding to VT1 and VT2, and expressed as percentage of maximum VO2 and heart rate. When expressed relative to VO2max, percentage of playing time in zone 1 (77 25% was significantly higher (p 0.001) than in zone 2 (20 21% and zone 3 (3 5% Moderate to high positive correlations were found between VT1, VT2 and VO2max, and the percentage of playing time spent in zone 1 (r 0.68 0.75) as well as low to high inverse correlations between the metabolic variables and the percentage of time spent in zone 2 and 3 (r 0.49 0.75) Players with better aerobic fitness play at relatively lower intensities. We conclude that players spent more than 75% of the time in their low intensity zone, with less than 25% of the time spent at moderate to high intensities. Aerobic fitness appears to determine the metabolic intensity that players can sustain throughout the game.", "corpus_id": 16592545, "venue": "PloS one", "year": 2015, "author_names": [ "Ernest Baiget", "Jaime Fernandez-Fernandez", "Xavier Iglesias", "Ferran A Rodriguez" ], "n_citations": 17, "n_key_citations": 1, "score": 0 }, { "doc_id": "40885837", "title": "Model and effectiveness of endurance exercise to increase physical fitness in intellectual disability subjects with obesity: a randomized controlled trial.", "abstract": "AIM to design a model and assess the effectiveness of endurance exercise to increase physical fitness in intelectual disability (ID) patients with obesity. METHODS a randomized controlled clinical trial was performed in ID patients with obesity aged 10 30 years old from all Special School in DKI Jakarta, which were randomly allocated into 3 groups and then given 3 different type of exercises: lower extremity muscles endurance exercise for 20 RM followed by cardiorespiratory endurance exercise for 24 25 minutes (type I) lower extremity muscles endurance exercises for 10 RM followed by cardiorespiratory endurance exercises for 26 27 minutes (type II) and threw a tennis ball with 10 m distance for 10 minutes as control (type III) These program was performed 3 times a week for 4 months. Assesment of the exercise effectiveness was done by measuring maximum load that can be lifted and six minutes walking test on rectangular track which was converted with the VO2 max prediction formula. Analysis was perfomed with Kruskal Wallis test. RESULTS two hundred and twelve (212) subjects were included in the study, randomly allocated into three types (I, II, and III) of exercises groups. The type II of endurance exercise model was proved to be more effective in increasing lower extremity muscles endurance level compared to type I and III for ID patients with obesity (p<0.05) Meanwhile, type I of endurance exercise model was proved to be more effective in increasing cardiorespiratory endurance level compared to type II and III for ID patients with obesity (p<0.05) CONCLUSION lower extremity muscles endurance exercise followed by a cardiorespiratory endurance exercise can be used to increase physical fitness in ID patients with obesity.", "corpus_id": 40885837, "venue": "Acta medica Indonesiana", "year": 2015, "author_names": [ "Tirza Z Tamin", "Ferial Hadipoetro Idris", "Muchtaruddin Mansyur", "Sidartawan Soegondo" ], "n_citations": 3, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "225937728", "title": "Modal parameter identification of subsynchronous oscillation based on stochastic subspace algorithm", "abstract": "", "corpus_id": 225937728, "venue": "", "year": 2020, "author_names": [ "Jie Shi", "Juan Li", "Jing Li" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "233648670", "title": "Application of Improved Combined Deterministic Stochastic Subspace Algorithm in Bridge Modal Parameter Identification", "abstract": "Modal parameter identification is considered to be one of the most important tasks in structural health monitoring because it provides a reliable reference for structural vibration control, damage severity, and operational state. Moreover, at present, the combined deterministic stochastic subspace algorithm is cogitated as one of the key algorithms in the modal parameter identification, which is why it is widely used in the modal parameter identification of bridge structures. In this paper, a novel method is proposed, which is a time domain identification algorithm, based on sliding window fuzzy C means clustering algorithm combined with deterministic stochastic subspace identification (SC CDSI) to achieve online intelligent tracking and identification of modal parameters for nonlinear time varying structures. First of all, to realize the online tracking and identification process, it is necessary to divide the input and output signal of the nonlinear time varying structure by windowing; for that, to determine the window function, window size and window step length according to the characteristics of the signal are analyzed. Secondly, in order to satisfy the intelligent identification of effective modals in stability diagram, the fuzzy C means clustering algorithm is kept as a base, whereas frequency, damping ratio, and modal shapes serve as clustering elements, applied to fuzzy C means clustering algorithm, and then the intelligent selection of effective modals is achieved. Finally, a shaking table test bridge is used as a modal parameter identification in lab, and its results are compared with the MIDAS finite element results. The compared results show that the proposed SC CDSI identification algorithm can accurately achieve the intelligent identification of online tracking of the structural frequency, and the identification results are reliable to be used in real life bridge structures.", "corpus_id": 233648670, "venue": "", "year": 2021, "author_names": [ "Peng Wen", "Inamullah Khan", "Jie He" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "233694006", "title": "Automated operational modal analysis of an end supported pontoon bridge using covariance driven stochastic subspace identification and a density based hierarchical clustering algorithm", "abstract": "", "corpus_id": 233694006, "venue": "", "year": 2021, "author_names": [ "Knut Kvale", "Ole Oiseth" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "195852978", "title": "Modal Parameter Determination of Stay Cable with an Improved Algorithm Based on Stochastic Subspace Identification", "abstract": "The modal parameter determination of stay cable is generally a critical issue for either designing or monitoring cable stayed bridges. Stochastic subspace identification (SSI) has been proved in recent years to be an excellent tool for obtaining all the modal parameters together in the cases where only the output signals are available. Nevertheless, its feasibility and accuracy in practical applications remain to be extensively verified. Especially for the situations where the frequency content of excitation is narrowly banded and thus far away from the white noise assumption underneath the theoretical derivation of SSI, the problem of superfluously indentifying numerous deceptive modes usually occurs. Attempting to crack this difficulty, an improved algorithm based on SSI is developed in the current work for performing the modal parameter determination of stay cables. This study adopts the covariance type of SSI, usually with better stability and computation efficiency, to establish an effective methodology for extensively identifying the modal parameters of stay cables. Several details of choosing the computational parameters in performing SSI are first discussed, followed by proposing an alternative stabilization diagram such that most modal parameters of cable can stand out and then imposing appropriate sifting criteria to extract the most reliable modal parameters.", "corpus_id": 195852978, "venue": "", "year": 2015, "author_names": [ "Wen-Hwa Wu", "Chien-Chou Chen", "Shen-wei Wang", "Gwolong Lai" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "125085920", "title": "Modal identification of arch dams using balanced stochastic subspace identification", "abstract": "Dynamic characteristics extracted from ambient and forced vibration tests are always associated with some level of uncertainties because of unknown nature of applied forces, existence of ambient noises as well as measurement errors. Stochastic Subspace Methods are among the most accurate and consistent methods within the domain of operational modal analysis. In this research, a new technique for Operational Modal Analysis is proposed using Stochastic Realization Theory and Canonical Correlation Analysis, which in comparison with previous methodologies, identification process are directly performed in the prediction space by extracting orthonormal vectors of data space. Considering its optimized nature, the proposed method is expected to have superior accuracy in terms of elimination of unstable poles as well as low time consumption analysis. To indicate the efficiency and accuracy of the proposed algorithm, it is applied to reanalyze the results of the forced vibration tests performed on the Shahid Rajaee arch dam in northern Iran. These tests were conducted via steady state sinusoidal stimulation method. More accurate natural frequencies are obtained compared to those of previously reported results, besides the fact that the first three modes of the structure were identified by the new approach, while they were not observed via the previous one. In order to examine the capabilities of the proposed method for processing of ambient vibration records, the dynamic characteristics of the Pacoima dam was identified using the recorded responses during 2001 earthquake in San Fernando, California. The results indicated good accuracy in the obtained frequencies and damping ratios compared to those obtained via data driven subspace method. Time consumption of identification process were reduced significantly (up to 50% for both case studies indicating a faster convergence rate provided by the proposed method.", "corpus_id": 125085920, "venue": "", "year": 2018, "author_names": [ "Reza Tarinejad", "Mehran Pourgholi" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "182883349", "title": "Finite element model updating of a large structure using multi setup stochastic subspace identification method and bees optimization algorithm", "abstract": "In the present contribution, operational modal analysis in conjunction with bees optimization algorithm are utilized to update the finite element model of a solar power plant structure. The physical parameters which required to be updated are uncertain parameters including geometry, material properties and boundary conditions of the aforementioned structure. To determine these uncertain parameters, local and global sensitivity analyses are performed to increase the solution accuracy. An objective function is determined using the sum of the squared errors between the natural frequencies calculated by finite element method and operational modal analysis, which is optimized using bees optimization algorithm. The natural frequencies of the solar power plant structure are estimated by multi setup stochastic subspace identification method which is considered as a strong and efficient method in operational modal analysis. The proposed algorithm is efficiently implemented on the solar power plant structure located in Shahid Chamran university of Ahvaz, Iran, to update parameters of its finite element model. Moreover, computed natural frequencies by numerical method are compared with those of the operational modal analysis. The results indicate that, bees optimization algorithm leads accurate results with fast convergence.", "corpus_id": 182883349, "venue": "Frontiers of Structural and Civil Engineering", "year": 2019, "author_names": [ "Reza Khademi-Zahedi", "Pouyan Alimouri" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "213591493", "title": "A novel recursive stochastic subspace identification algorithm with its application in long term structural health monitoring of office buildings", "abstract": "This study develops a novel recursive algorithm to significantly enhance the computation efficiency of a recently proposed stochastic subspace identification (SSI) methodology based on an alternative stabilization diagram. Exemplified by the measurements taken from the two investigated office buildings, it is first demonstrated that merely one sixth of computation time and one fifth of computer memory are required with the new recursive algorithm. Such a progress would enable the realization of on line and almost real time monitoring for these two steel framed structures. This recursive SSI algorithm is further applied to analyze 20 months of monitoring data and comprehensively assess the environmental effects. It is certified that the root mean square (RMS) response can be utilized as an excellent index to represent most of the environmental effects and its variation strongly correlates with that of the modal frequency. More detailed examination by comparing the monthly correlation coefficient discloses that larger variations in modal frequency induced by greater RMS responses would typically lead to a higher correlation.", "corpus_id": 213591493, "venue": "", "year": 2019, "author_names": [ "Wen-Hwa Wu", "Jhe-Wei Jhou", "Chien-Chou Chen", "Gwolong Lai" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "235529597", "title": "Synergistic bridge modal analysis using frequency domain decomposition, observer Kalman filter identification, stochastic subspace identification, system realization using information matrix, and autoregressive exogenous model", "abstract": "Abstract This paper presents multiple system identification of large scale bridge structures proposing the combined usage of different modal parameter findings, namely from Frequency Domain Decomposition, Observer Kalman Filter Identification/Eigensystem Realization Algorithm, Combined Deterministic Stochastic Subspace Identification, System Realization Using Information Matrix, and Autoregressive Exogenous Model. A method centric democratic ranking approach visualizes and quantifies the harmony among different system identification methods in terms of modal parameters, then ranks them based on the correlation among each other, and consequently complies with the highest rank modal parameter outputs. The synergistic scheme is applied on a numerical beam and two bridge structures including one healthy and another subjected to progressive damage. Looking at the top rank selections, one can see that outlier identification results from a population of modal parameters can intuitively become extinct. The collaboration among methods is dependent on the chosen methods; therefore, method selection relies on care and fair representation of the identification features. Lack of agreement between methods can indicate low confidence in the outranking method and is quantified by median absolute deviation. Nevertheless, the majority of the algorithm population agrees on specific results, which are valuable to produce state knowledge despite low signal to noise ratio, especially without the presence of a reference. Thus, the collaborative usage of multiple methods in a systematic and ranking based manner reduces significant error and outlier possibilities in modal identification due to algorithm related issues, which is the novel contribution of this study.", "corpus_id": 235529597, "venue": "", "year": 2021, "author_names": [ "Thanh-Nhunancy T Tran", "Ekin Ozer" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "233648694", "title": "Modal Parameter Identification of a Quayside Container Crane Based on Data Driven Stochastic Subspace Identification", "abstract": "Background Modal parameters of a quayside container crane can reflect the vibration performance of a structure at work. Identifying these parameters through modal tests can be used to improve the design scheme, evaluate performance, and detect damage. Method This paper introduces the process of modal parameter identification based on data driven stochastic subspace identification (SSI) The proposed algorithm is programmed based on the MATLAB platform. The effectiveness of the algorithm is verified by a numerical three degree of freedom vibration model. In this paper, the overall structure of a quayside container crane was modally tested for the first time under ambient excitation. The test scheme using the mobile measurement method is introduced in detail. The signal data collected by the modal test are used as the input data of the data driven SSI, and the first seven natural frequencies, damping ratios, and mode shapes of the crane are identified successfully. Furthermore, the finite element model of the crane is established with ANSYS, and the first seven frequencies and mode shapes are also obtained. Results and Conclusions By comparing the results of the two methods, it can be found that the parameters identified by the proposed algorithm have high accuracy. The proposed method can be applied to the health monitoring system of the quayside container crane.", "corpus_id": 233648694, "venue": "", "year": 2021, "author_names": [ "Xiuzhong Xu", "Xu Zhang", "Xiancheng Gu" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "233365151", "title": "Modal parameters identification of bridge by improved stochastic subspace identification method with Grubbs criterion", "abstract": "In the wind tunnel test of a long span bridge model, to ensure that the dynamic characteristics of the model can satisfy the test design requirements, it is particularly important to accurately identify the modal parameters of the model. First, the stochastic subspace identification algorithm was used to analyze the modal parameters of the model in the wind tunnel test; then, Grubbs criterion was introduced to effectively eliminate outliers in the damping ratio matrix. Stochastic subspace identification algorithm with Grubbs criterion improved the accuracy of the modal parameter identification and the ability to determine system matrix order and prevented the modal omissions caused by determining the stable condition of the damping ratio in the stability diagram. Finally, Oujiang Bridge was used as an example to verify the stochastic subspace identification algorithm with Grubbs criterion and compare with the results of the finite element method. The example shows that the improved method can be effectively applied to the modal parameter identification of bridges.", "corpus_id": 233365151, "venue": "", "year": 2021, "author_names": [ "Yulin Zhou", "Xulei Jiang", "Mingjin Zhang", "Jinxian Zhang", "Hao Sun" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "53739686", "title": "Fast, Diverse and Accurate Image Captioning Guided by Part Of Speech", "abstract": "Image captioning is an ambiguous problem, with many suitable captions for an image. To address ambiguity, beam search is the de facto method for sampling multiple captions. However, beam search is computationally expensive and known to produce generic captions. To address this concern, some variational auto encoder (VAE) and generative adversarial net (GAN) based methods have been proposed. Though diverse, GAN and VAE are less accurate. In this paper, we first predict a meaningful summary of the image, then generate the caption based on that summary. We use part of speech as summaries, since our summary should drive caption generation. We achieve the trifecta: (1) High accuracy for the diverse captions as evaluated by standard captioning metrics and user studies; (2) Faster computation of diverse captions compared to beam search and diverse beam search; and (3) High diversity as evaluated by counting novel sentences, distinct n grams and mutual overlap (i.e. mBleu 4) scores.", "corpus_id": 53739686, "venue": "2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)", "year": 2019, "author_names": [ "Aditya Deshpande", "Jyoti Aneja", "Liwei Wang", "Alexander G Schwing", "David Alexander Forsyth" ], "n_citations": 57, "n_key_citations": 6, "score": 1 }, { "doc_id": "53116388", "title": "Waveform Generation for Text to speech Synthesis Using Pitch synchronous Multi scale Generative Adversarial Networks", "abstract": "The state of the art in text to speech (TTS) synthesis has recently improved considerably due to novel neural waveform generation methods, such as WaveNet. However, these methods suffer from their slow sequential inference process, while their parallel versions are difficult to train and even more computationally expensive. Meanwhile, generative adversarial networks (GANs) have achieved impressive results in image generation and are making their way into audio applications; parallel inference is among their lucrative properties. By adopting recent advances in GAN training techniques, this investigation studies waveform generation for TTS in two domains (speech signal and glottal excitation) Listening test results show that while direct waveform generation with GAN is still far behind WaveNet, a GAN based glottal excitation model can achieve quality and voice similarity on par with a WaveNet vocoder.", "corpus_id": 53116388, "venue": "ICASSP 2019 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)", "year": 2019, "author_names": [ "Lauri Juvela", "Bajibabu Bollepalli", "Junichi Yamagishi", "Paavo Alku" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "210695147", "title": "Accuracy improvement of facial expression recognition in speech acts: Confirmation of effectiveness of information around a mouth and GAN based data augmentation", "abstract": "With the growth of the social robot market, much research has been undertaken on facial expression recognition, which is an important function of a social robot. Facial expression recognition models have shown good performance in a facial expression image dataset that expresses emotion without considering speaking effect. However, in reality, humans often express emotions by speaking and moving the muscles around the mouth. Therefore, the lack of consideration of speech leads to unsatisfactory emotion recognition results. In this paper, we investigated two points to be considered in learning a facial expression recognition model. First, we confirmed whether the information around a mouth induces the recognition model in speech act to misrecognition like the case of a facial expression recognition in non speech acts or it has valid information for facial expression recognition. Second, Generative Adversarial Network (GAN) based data augmentation has been performed to cover the problem in which the accuracy of the recognition model in speech acts is low because of the relatively small variance about the subject in RML dataset. The results showed that the information around the mouth made facial expression recognition in speech acts exhibit higher performance, unlike the case of facial expression recognition in non speech acts. In addition, the GAN based data augmentation alleviated the accuracy degradation in facial expression recognition because of the low variance of the dataset.", "corpus_id": 210695147, "venue": "2019 28th IEEE International Conference on Robot and Human Interactive Communication (RO MAN)", "year": 2019, "author_names": [ "Kyu-Seob Song", "Dong-Soo Kwon" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197642478", "title": "A Survey of State of the Art GAN based Approaches to Image Synthesis", "abstract": "In the past few years, Generative Adversarial Networks (GANs) have received immense attention by researchers in a variety of application domains. This new field of deep learning has been growing rapidly and has provided a way to learn deep representations without extensive use of annotated training data. Their achievements may be used in a variety of applications, including speech synthesis, image and video generation, semantic image editing, and style transfer. Image synthesis is an important component of expert systems and it attracted much attention since the introduction of GANs. However, GANs are known to be difficult to train especially when they try to generate high resolution images. This paper gives a thorough overview of the state of the art GANs based approaches in four applicable areas of image generation including Text to Image Synthesis, Image to Image Translation, Face Aging, and 3D Image Synthesis. Experimental results show state of the art performance using GANs compared to traditional approaches in the fields of image processing and machine vision.", "corpus_id": 197642478, "venue": "9th International Conference on Computer Science, Engineering and Applications (CCSEA 2019)", "year": 2019, "author_names": [ "Shirin Nasr Esfahani", "Shahram Latifi" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "189928265", "title": "Realistic Speech Driven Facial Animation with GANs", "abstract": "Speech driven facial animation is the process that automatically synthesizes talking characters based on speech signals. The majority of work in this domain creates a mapping from audio features to visual features. This approach often requires post processing using computer graphics techniques to produce realistic albeit subject dependent results. We present an end to end system that generates videos of a talking head, using only a still image of a person and an audio clip containing speech, without relying on handcrafted intermediate features. Our method generates videos which have (a) lip movements that are in sync with the audio and (b) natural facial expressions such as blinks and eyebrow movements. Our temporal GAN uses 3 discriminators focused on achieving detailed frames, audio visual synchronization, and realistic expressions. We quantify the contribution of each component in our model using an ablation study and we provide insights into the latent representation of the model. The generated videos are evaluated based on sharpness, reconstruction quality, lip reading accuracy, synchronization as well as their ability to generate natural blinks.", "corpus_id": 189928265, "venue": "International Journal of Computer Vision", "year": 2019, "author_names": [ "Konstantinos Vougioukas", "Stavros Petridis", "Maja Pantic" ], "n_citations": 66, "n_key_citations": 10, "score": 1 }, { "doc_id": "85498398", "title": "Wav2Pix: Speech conditioned Face Generation Using Generative Adversarial Networks", "abstract": "Speech is a rich biometric signal that contains information about the identity, gender and emotional state of the speaker. In this work, we explore its potential to generate face images of a speaker by conditioning a Generative Adversarial Network (GAN) with raw speech input. We propose a deep neural network that is trained from scratch in an end to end fashion, generating a face directly from the raw speech waveform without any additional identity information (e.g reference image or one hot encoding) Our model is trained in a self supervised approach by exploiting the audio and visual signals naturally aligned in videos. With the purpose of training from video data, we present a novel dataset collected for this work, with high quality videos of youtubers with notable expressiveness in both the speech and visual signals.", "corpus_id": 85498398, "venue": "ICASSP 2019 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)", "year": 2019, "author_names": [ "Amanda Duarte", "Francisco Roldan", "Miquel Tubau", "Janna Escur", "Santiago Pascual", "Amaia Salvador", "Eva Mohedano", "Kevin McGuinness", "Jordi Torres", "Xavier Giro-i-Nieto" ], "n_citations": 36, "n_key_citations": 2, "score": 0 }, { "doc_id": "19096428", "title": "Exploring Speech Enhancement with Generative Adversarial Networks for Robust Speech Recognition", "abstract": "We investigate the effectiveness of generative adversarial networks (GANs) for speech enhancement, in the context of improving noise robustness of automatic speech recognition (ASR) systems. Prior work [1] demonstrates that GANs can effectively suppress additive noise in raw waveform speech signals, improving perceptual quality metrics; however this technique was not justified in the context of ASR. In this work, we conduct a detailed study to measure the effectiveness of GANs in enhancing speech contaminated by both additive and reverberant noise. Motivated by recent advances in image processing [2] we propose operating GANs on log Mel filterbank spectra instead of waveforms, which requires less computation and is more robust to reverberant noise. While GAN enhancement improves the performance of a clean trained ASR system on noisy speech, it falls short of the performance achieved by conventional multi style training (MTR) By appending the GAN enhanced features to the noisy inputs and retraining, we achieve a 7% WER improvement relative to the MTR system.", "corpus_id": 19096428, "venue": "2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)", "year": 2018, "author_names": [ "Chris Donahue", "Bo Li", "Rohit Prabhavalkar" ], "n_citations": 117, "n_key_citations": 12, "score": 0 }, { "doc_id": "198183644", "title": "End to End Speech Driven Realistic Facial Animation with Temporal GANs", "abstract": "Speech driven facial animation is the process which uses speech signals to automatically synthesize a talking character. The majority of work in this domain creates a mapping from audio features to visual features. This often requires postprocessing using computer graphics techniques to produce realistic albeit subject dependent results. We present a system for generating videos of a talking head, using a still image of a person and an audio clip containing speech, that does not rely on any handcrafted intermediate features. To the best of our knowledge, this is the first method capable of generating subject independent realistic videos directly from raw audio. Our method can generate videos which have (a) lip movements that are in sync with the audio and (b) natural facial expressions such as blinks and eyebrow movements. We achieve this by using a temporal GAN with 2 discriminators, which are capable of capturing different aspects of the video. The generated videos are evaluated based on their sharpness, reconstruction quality, and lip reading accuracy. Finally, a user study is conducted, confirming that temporal GANs lead to more natural sequences than a static GAN based approach.", "corpus_id": 198183644, "venue": "CVPR Workshops", "year": 2019, "author_names": [ "Konstantinos Vougioukas", "Stavros Petridis", "Maja Pantic" ], "n_citations": 27, "n_key_citations": 4, "score": 0 }, { "doc_id": "44061183", "title": "End to End Speech Driven Facial Animation with Temporal GANs", "abstract": "Speech driven facial animation is the process which uses speech signals to automatically synthesize a talking character. The majority of work in this domain creates a mapping from audio features to visual features. This often requires post processing using computer graphics techniques to produce realistic albeit subject dependent results. We present a system for generating videos of a talking head, using a still image of a person and an audio clip containing speech, that doesn't rely on any handcrafted intermediate features. To the best of our knowledge, this is the first method capable of generating subject independent realistic videos directly from raw audio. Our method can generate videos which have (a) lip movements that are in sync with the audio and (b) natural facial expressions such as blinks and eyebrow movements. We achieve this by using a temporal GAN with 2 discriminators, which are capable of capturing different aspects of the video. The effect of each component in our system is quantified through an ablation study. The generated videos are evaluated based on their sharpness, reconstruction quality, and lip reading accuracy. Finally, a user study is conducted, confirming that temporal GANs lead to more natural sequences than a static GAN based approach.", "corpus_id": 44061183, "venue": "BMVC", "year": 2018, "author_names": [ "Konstantinos Vougioukas", "Stavros Petridis", "Maja Pantic" ], "n_citations": 67, "n_key_citations": 9, "score": 0 }, { "doc_id": "51820418", "title": "On Adversarial Training and Loss Functions for Speech Enhancement", "abstract": "Generative adversarial networks (GANs) are becoming increasingly popular for image processing tasks. Researchers have started using GAN s for speech enhancement, but the advantage of using the GAN framework has not been established for speech enhancement. For example, a recent study reports encouraging enhancement results, but we find that the architecture of the generator used in the GAN gives better performance when it is trained alone using the $L_1$ loss. This work presents a new GAN for speech enhancement, and obtains performance improvement with the help of adversarial training. A deep neural network (DNN) is used for time frequency mask estimation, and it is trained in two ways: regular training with the $L_1$ loss and training using the GAN framework with the help of an adversary discriminator. Experimental results suggest that the GAN framework improves speech enhancement performance. Further exploration of loss functions, for speech enhancement, suggests that the $L_1$ loss is consistently better than the $L_2$ loss for improving the perceptual quality of noisy speech.", "corpus_id": 51820418, "venue": "2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)", "year": 2018, "author_names": [ "Ashutosh Pandey", "Deliang Wang" ], "n_citations": 48, "n_key_citations": 3, "score": 0 } ]

[ { "doc_id": "61811958", "title": "HoneyDOC: An Efficient Honeypot Architecture Enabling All Round Design", "abstract": "Honeypots are designed to trap the attacker with the purpose of investigating its malicious behavior. Owing to the increasing variety and sophistication of cyber attacks, how to capture high quality attack data has become a challenge in the context of honeypot area. All round honeypots, which mean a significant improvement in sensibility, countermeasure, and stealth, are necessary to tackle the problem. In this paper, we propose a novel honeypot architecture termed HoneyDOC to support all round honeypot design and implementation. Our HoneyDOC architecture clearly identifies three essential independent and collaborative modules, Decoy, Captor, and Orchestrator. Based on the efficient architecture, a software defined networking enabled honeypot system is designed, which supplies a high programmability for technically sustaining the features for capturing high quality data. A proof of concept system is implemented to validate its feasibility and effectiveness. The experimental results show the benefits by using the proposed architecture compared with the previous honeypot solutions.", "corpus_id": 61811958, "venue": "IEEE Journal on Selected Areas in Communications", "year": 2019, "author_names": [ "Wenjun Fan", "Zhihui Du", "Max Smith-Creasey", "David Fernandez" ], "n_citations": 15, "n_key_citations": 0, "score": 1 }, { "doc_id": "195750533", "title": "Adaptive Honeypot Engagement through Reinforcement Learning of Semi Markov Decision Processes", "abstract": "A honeynet is a promising active cyber defense mechanism. It reveals the fundamental Indicators of Compromise (IoCs) by luring attackers to conduct adversarial behaviors in a controlled and monitored environment. The active interaction at the honeynet brings a high reward but also introduces high implementation costs and risks of adversarial honeynet exploitation. In this work, we apply infinite horizon Semi Markov Decision Process (SMDP) to characterize a stochastic transition and sojourn time of attackers in the honeynet and quantify the reward risk trade off. In particular, we design adaptive long term engagement policies shown to be risk averse, cost effective, and time efficient. Numerical results have demonstrated that our adaptive engagement policies can quickly attract attackers to the target honeypot and engage them for a sufficiently long period to obtain worthy threat information. Meanwhile, the penetration probability is kept at a low level. The results show that the expected utility is robust against attackers of a large range of persistence and intelligence. Finally, we apply reinforcement learning to the SMDP to solve the curse of modeling. Under a prudent choice of the learning rate and exploration policy, we achieve a quick and robust convergence of the optimal policy and value.", "corpus_id": 195750533, "venue": "GameSec", "year": 2019, "author_names": [ "Linan Huang", "Quanyan Zhu" ], "n_citations": 18, "n_key_citations": 1, "score": 0 }, { "doc_id": "209175252", "title": "Honware: A Virtual Honeypot Framework for Capturing CPE and IoT Zero Days", "abstract": "Existing solutions are ineffective in detecting zero day exploits targeting Customer Premise Equipment (CPE) and Internet of Things (IoT) devices. We present honware, a high interaction honeypot framework which can emulate a wide range of devices without any access to the manufacturers' hardware. Honware automatically processes a standard firmware image (as is commonly provided for updates) customises the filesystem and runs the system with a special pre built Linux kernel. It then logs attacker traffic and records which of their actions led to a compromise. We provide an extensive evaluation and show that our framework improves upon existing emulation strategies which are limited in their scalability, and that it is significantly better both in providing network functionality and in emulating the devices' firmware applications a crucial aspect as vulnerabilities are frequently exploited by attackers in 'front end' functionalities such as web interfaces. Honware's design precludes most honeypot fingerprinting attacks, and as its performance is comparable to that of real devices, fingerprinting with timing attacks can be made far from trivial. We provide four case studies in which we demonstrate that honware is capable of rapid deployment to capture the exact details of attacks along with malware samples. In particular we identified a previously unknown attack in which the default DNS for an ipTIME N604R wireless router was changed. We believe that honware is a major contribution towards re balancing the economics of attackers and defenders by reducing the period in which attackers can exploit zero days at Internet scale.", "corpus_id": 209175252, "venue": "2019 APWG Symposium on Electronic Crime Research (eCrime)", "year": 2019, "author_names": [ "Alexander Vetterl", "Richard Clayton" ], "n_citations": 12, "n_key_citations": 2, "score": 0 }, { "doc_id": "59347122", "title": "Honeypot Deception Tactics", "abstract": "Honeypots on computer networks are most effective when they use deception to fool cyberadversaries into thinking that they are not actual decoy intelligence collectors. Honeypot deception can be made more effective when applied with variety. We discuss the range of deception tactics of which honeypots can take advantage. Ideas can come from deception theory, and honeypot deceptions can benefit from planning and experimentation.", "corpus_id": 59347122, "venue": "", "year": 2019, "author_names": [ "Ehab Al-Shaer", "Jinpeng Wei", "Kevin W Hamlen", "Cliff X Wang" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "204230808", "title": "A Honeypot with Machine Learning based Detection Framework for defending IoT based Botnet DDoS Attacks", "abstract": "With the tremendous growth of IoT botnet DDoS attacks in recent years, IoT security has now become one of the most concerned topics in the field of network security. A lot of security approaches have been proposed in the area, but they still lack in terms of dealing with newer emerging variants of IoT malware, known as Zero Day Attacks. In this paper, we present a honeypot based approach which uses machine learning techniques for malware detection. The IoT honeypot generated data is used as a dataset for the effective and dynamic training of a machine learning model. The approach can be taken as a productive outset towards combatting Zero Day DDoS Attacks which now has emerged as an open challenge in defending IoT against DDoS Attacks.", "corpus_id": 204230808, "venue": "2019 3rd International Conference on Trends in Electronics and Informatics (ICOEI)", "year": 2019, "author_names": [ "Ruchi Vishwakarma", "Ankit Kumar Jain" ], "n_citations": 24, "n_key_citations": 3, "score": 0 }, { "doc_id": "189825047", "title": "Dynamic Distributed Honeypot Based on Blockchain", "abstract": "Honeypot technology can be applied to efficiently attract attackers and exhaust their resources. However, the traditional static honeypot is easy to be recognized by anti honeypot technology. By contrast, most of the dynamic honeypots can simulate the real system in time, thus interacting with an intruder in disguise. In this paper, we employ the dynamic property of honeypot in four kinds of services of our system. However, this dynamic property shows up in a location and identification, indicating that genuine or fake services (honeypots) are changeable in different hosts. Thus, the dynamic property of our system differs from the dynamic honeypot aforementioned. Besides, we adopt the blockchain platform (Ethereum) to decentralize our system and store the port access data by delivering a private chain. To illustrate the effectiveness of our scheme in theory and practice, security analysis, eavesdropping attack, scanning attack, and DoS attack experiments are conducted. The results show that our scheme is valid in safeguarding against network attack.", "corpus_id": 189825047, "venue": "IEEE Access", "year": 2019, "author_names": [ "Leyi Shi", "Yongxi Li", "Tianxu Liu", "Jia Liu", "Baoying Shan", "Honglong Chen" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "49326208", "title": "A survey on Intrusion Detection Systems and Honeypot based proactive security mechanisms in VANETs and VANET Cloud", "abstract": "Abstract Vehicular ad hoc Network (VANET) is an emerging type of Mobile ad hoc Networks (MANETs) with excellent applications in the intelligent traffic system. Applications in VANETs are life critical since human lives are at stake and therefore, interaction among nodes (vehicles) must be established in the most secure manner. To provide security for VANETs, various security measures are designed, the most popular of which is Intrusion Detection Systems (IDSs) IDS has already proved its worth in detection of malicious nodes in traditional networks but applying the IDS in VANET like networks is somehow different and difficult due to its peculiar characteristics such as resource constrained nodes, high mobility of nodes, specific protocols stacks, and standards. This paper presents a brief introduction about the various IDSs, in general, to get the readers well acquainted with the concept of IDS after which an in depth survey of various IDSs that are propounded for VANETs is put forward followed by analyzing and comparing each technique along with merits and demerits. Some basic instructions have also been presented for developing IDSs that have a potential application in VANET and VANET Cloud. Our aim is to identify leading trends, open challenges, and future research directions in the deployment of IDS in VANET. In order to bridge the research gaps in terms of performance, detection rate and overhead, and also to overcome the challenges of existing IDS in literature, a proactive bait based Honeypot optimized IDS system is also proposed with the aim to detect existing and zero day attacks with minimal overhead. Finally, some open research works being carried out in the field is also proposed.", "corpus_id": 49326208, "venue": "Veh. Commun.", "year": 2018, "author_names": [ "Sparsh Sharma", "Ajay Kaul" ], "n_citations": 72, "n_key_citations": 3, "score": 0 }, { "doc_id": "203702113", "title": "Automatic Identification of Honeypot Server Using Machine Learning Techniques", "abstract": "Traditional security strategies are powerless when facing novel attacks in the complex network environment, such as advanced persistent threat (APT) Compared with traditional security detection strategies, the honeypot system, especially on the Internet of things research area, is intended to be attacked and automatically monitor potential attacks by analyzing network packages or log files. The researcher can extract exactly threat actor tactics, techniques, and procedures from these data and then generate more effective defense strategies. But for normal security researchers, it is an urgent topic how to improve the honeypot mechanism which could not be recognized by attackers, and silently capture their behaviors. So, they need awesome intelligent techniques to automatically check remotely whether the server runs honeypot service or not. As the rapid progress in honeypot detection using machine learning technologies, the paper proposed a new automatic identification model based on random forest algorithm with three group features: application layer feature, network layer feature, and other system layer feature. The experiment datasets are collected from public known platforms and designed to prove the effectiveness of the proposed model. The experiment results showed that the presented model achieved a high area under curve (AUC) value with 0.93 (area under the receiver operating characteristic curve) which is better than other machine learning algorithms.", "corpus_id": 203702113, "venue": "Secur. Commun. Networks", "year": 2019, "author_names": [ "Cheng Huang", "Jiaxuan Han", "Xing Zhang", "Jiayong Liu" ], "n_citations": 10, "n_key_citations": 1, "score": 0 }, { "doc_id": "160010459", "title": "SCADA security using SSH honeypot", "abstract": "Industrial Control System (ICS) is a term that refers to control systems in production, transmission and distribution architecture in Smart Grid. These systems can be SCADA (Supervisory Control and Data Acquisition System) and DCS (Distributed Control Systems) ICS have moved from proprietary system to open and standard technologies interconnected with others networks such as Internet. This move to interconnecting ICS with others networks have exposed this system to different attacks and have revealed serious weaknesses. So, these systems must deployed protection measures like IDS, Firewalls, IPS and others. However, detection based on these measures is often based on prior knowledge of the attacks themselves and are not able to study the behavior and techniques used by attackers, which means that new attacks are not detectable by them. So, in order to detect new attacks, understand malicious activities targeting ICS, and analyses attackers' behaviors and techniques used by them, in this article, we use a SSH honeypot tool called Kippo in order to log brute force attacks and shell interaction performed by attackers in order to take attention away in the production server.", "corpus_id": 160010459, "venue": "NISS19", "year": 2019, "author_names": [ "Amine Belqruch", "Abdelilah Maach" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "199187981", "title": "Defense Strategies Against Network Attacks in Cyber Physical Systems with Analysis Cost Constraint Based on Honeypot Game Model", "abstract": "Cyber physical system (CPS) is an advanced system that integrats physical processes, computation and communication resources. The security of cyber physical systems has become an active research area in recent years. In this paper, we focus on defensive strategies against network attacks in CPS. We introduce both lowand highinteraction honeypots into CPS as a security management tool deliberately designed to be probed, attacked and compromised. In addition, an analysis resource constraint is introduced for the purpose of optimizing defensive strategies against network attacks in CPS. We study the offensive and defensive interactions of CPS and model the offensive and defensive process as an incomplete information game with the assumption that the defender's analysis resource is unknown to the attacker. We prove the existence of several Bayesian Nash equilibria in the lowand high interaction honeypot game without analysis cost constraints and obtain the attacker's equilibrium strategy firstly. Then, we take the impact of analysis cost on the capture effect of honeypots into consideration and further optimize the defensive strategy by allocating analysis resource between lowand high interaction honeypot with resource constraint. Finally, the proposed method is evaluated through numerical simulation and prove to be effective in obtaining the optimal defensive strategy.", "corpus_id": 199187981, "venue": "", "year": 2019, "author_names": [ "Wen Tian", "Xiaopeng Ji", "Weiwei Liu", "Guangjie Liu", "Rongru Lin", "Jiangtao Zhai", "Yuewei Dai" ], "n_citations": 9, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "213496012", "title": "A framework for Facebook advertising effectiveness: A behavioral perspective", "abstract": "Abstract Social network use is a global phenomenon, with Facebook taking prime position as preferred social network service. Use of Facebook is huge in developed and developing economies, yet the immense marketing potential of Facebook's full range of advertising tools (paid and free/organic) has been under researched. This cross country study examines advertising on Facebook. Social influence theory and regulatory focus theory provide the theoretical grounding. Data for a sample of 802 respondents (South Africa n 401; Australia n 401) were gathered. The results of structural equation modeling show that in both a developed context (Australia) and a developing context (South Africa) there are significant relationships between the constructs considered in the model (privacy concerns, trust, importance of control, advertising intrusiveness, attitudes toward ads, advertising value, attitudes toward Facebook advertising, and behavior toward the advertised and ad message) Importantly, however, these contexts differ in terms of users' avoidance approaches.", "corpus_id": 213496012, "venue": "", "year": 2020, "author_names": [ "Melanie Wiese", "Carla Martinez-Climent", "Dolores Botella-Carrubi" ], "n_citations": 17, "n_key_citations": 1, "score": 1 }, { "doc_id": "58280048", "title": "Measuring the Facebook Advertising Ecosystem", "abstract": "The Facebook advertising platform has been subject to a number of controversies in the past years regarding privacy violations, lack of transparency, as well as its capacity to be used by dishonest actors for discrimination or propaganda. In this study, we aim to provide a better understanding of the Facebook advertising ecosystem, focusing on how it is being used by advertisers. We first analyze the set of advertisers and then investigate how those advertisers are targeting users and customizing ads via the platform. Our analysis is based on the data we collected from over 600 real world users via a browser extension that collects the ads our users receive when they browse their Facebook timeline, as well as the explanations for why users received these ads. Our results reveal that users are targeted by a wide range of advertisers (e.g. from popular to niche advertisers) that a non negligible fraction of advertisers are part of potentially sensitive categories such as news and politics, health or religion; that a significant number of advertisers employ targeting strategies that could be either invasive or opaque; and that many advertisers use a variety of targeting parameters and ad texts. Overall, our work emphasizes the need for better mechanisms to audit ads and advertisers in social media and provides an overview of the platform usage that can help move towards such mechanisms.", "corpus_id": 58280048, "venue": "NDSS", "year": 2019, "author_names": [ "Athanasios Andreou", "Marcio Silva", "Fabricio Benevenuto", "Oana Goga", "Patrick Loiseau", "Alan Mislove" ], "n_citations": 31, "n_key_citations": 1, "score": 1 }, { "doc_id": "219407007", "title": "How do users evaluate personalized Facebook advertising? An analysis of consumer and advertiser controlled factors", "abstract": "This paper aims to investigate the role of five highly relevant advertiser (i.e. personalization and ad placement) and consumer controlled (i.e. privacy concerns, perceived relevance and Facebook motives) factors in the evaluation and perceived outcomes of personalized Facebook advertising as well as how these factors interrelate.,Twenty eight semi structured interviews, in which elicitation techniques were used, were carried out among 25 to 55 year old Facebook users.,The findings point to a complex tradeoff between the risks and benefits of personalized Facebook advertising, in which perceived relevance and Facebook use motives play a vital role.,This study focused on the general Facebook advertising experience, yet the elicitation techniques were applied only on the desktop website. Future research should look further into mobile advertising formats.,Personalization and retargeting algorithms could be improved and ads should be designed with the customers' interests in mind to improve their effectiveness and reduce privacy concerns.,Social media advertising innovates at a high pace. Yet, the literature shows an urgent need for research into which ad formats and characteristics appeal to users and why (or why not) Qualitative studies into the determinants of advertising outcomes are scarce but highly needed because they can uncover complex interactions between factors and thus provide a deeper understanding.", "corpus_id": 219407007, "venue": "", "year": 2020, "author_names": [ "Evert Van den Broeck", "Karolien Poels", "Michel Walrave" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "219560869", "title": "The Relative Value of Facebook Advertising Data for Poverty Mapping", "abstract": "Having reliable and up to date poverty data is a prerequisite for monitoring the United Nations Sustainable Development Goals (SDGs) and for planning effective poverty reduction interventions. Unfortunately, traditional data sources are often outdated or lacking appropriate disaggregation. As a remedy, satellite imagery has recently become prominent in obtaining geographically fine grained and up to date poverty estimates. Satellite data can pick up signals of economic activity by detecting light at night, it can pick up development status by detecting infrastructure such as roads, and it can pick up signals for individual household wealth by detecting different building footprints and roof types. It can, however, not look inside the households and pick up signals from individuals. On the other hand, alternative data sources such as audience estimates from Facebook's advertising platform provide insights into the devices and internet connection types used by individuals in different locations. Previous work has shown the value of such anonymous, publicly accessible advertising data from Facebook for studying migration, gender gaps, crime rates, and health, among others. In this work, we evaluate the added value of using Facebook data over satellite data for mapping socioeconomic development in two low and middle income countries the Philippines and India. We show that Facebook features perform roughly similar to satellite data in the Philippines with value added for urban locations. In India, however, where Facebook penetration is lower, satellite data perform better.", "corpus_id": 219560869, "venue": "ICWSM", "year": 2020, "author_names": [ "Masoomali Fatehkia", "Benjamin Coles", "Ferda Ofli", "Ingmar Weber" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "214192365", "title": "Role of Facebook Advertising in Promoting Tourism in Asia", "abstract": "", "corpus_id": 214192365, "venue": "", "year": 2020, "author_names": [ "Fajar Rezeki Ananda Lubis" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "201094553", "title": "Using Facebook Advertising to Recruit Representative Samples: Feasibility Assessment of a Cross Sectional Survey", "abstract": "Background Facebook has shown promise as an economical means of recruiting participants for health research. However, few studies have evaluated this recruitment method in Canada, fewer still targeting older adults, and, to our knowledge, none specifically in Newfoundland and Labrador (NL) Objective This study aimed to assess Facebook advertising as an economical means of recruiting a representative sample of adults aged 35 to 74 years in NL for a cross sectional health survey. Methods Facebook advertising was used to recruit for a Web based survey on cancer awareness and prevention during April and May 2018; during recruitment, additional advertisements were targeted to increase representation of demographics that we identified as being underrepresented in our sample. Sociodemographic and health characteristics of the study sample were compared with distributions of the underlying population to determine representativeness. Cramer V indicates the magnitude of the difference between the sample and population distributions, interpreted as small (Cramer V=0.10) medium (0.30) and large (0.50) Sample characteristics were considered representative if there was no statistically significant difference in distributions (chi square P>.01) or if the difference was small (V<=0.10) and practically representative if 0.10<V<=0.20. The cost per recruit of Facebook advertising was compared with a quote for a random digit dialing (RDD) recruited postal survey to determine if this method was economical. Results Facebook advertising is feasible and economical to conduct survey research, reaching 34,012 people, of which 2067 clicked on the ad, for a final sample size of 1048 people at Can $2.18 per recruit versus the quoted Can $23,316.05 for 400 recruits (Can $35.52 per recruit) via RDD. The sample was representative of rural and urban geography (P=.02; V=0.073) practically representative of age (P=.003; V=0.145) and income (P<.001; V=0.188) and over representative of women (P<.001; V=0.507) and higher levels of education (P<.001; V=0.488) The sample was representative of the proportion of people with a regular health care provider (P=.94; V=0.025) diabetes prevalence (P=.002; V=0.096) and having had a colonoscopy or sigmoidoscopy (P=.27; V=0.034) and it was practically representative of smoking status (P<.001; V=0.14) and body mass index (P<.001; V=0.135) The sample was not representative of arthritis prevalence (P<.001; V=0.573) perceived health (P<.001; V=0.384) or time since last seasonal flu shot (P<.001; V=0.449) Conclusions Facebook advertising offers an easy, rapid, and economical means to recruit a partially representative (representative or practically representative of 8 of the 13 characteristics studied) sample of middle aged and older adults for health survey research. As Facebook uses a nonrandom targeting algorithm, caution is warranted in its applications for certain types of research.", "corpus_id": 201094553, "venue": "Journal of medical Internet research", "year": 2019, "author_names": [ "Lance Garrett Shaver", "Ahmed Khawer", "Yanqing Yi", "Kris Aubrey-Bassler", "Holly Etchegary", "Barbara Roebothan", "Shabnam Asghari", "Peizhong Peter Wang" ], "n_citations": 23, "n_key_citations": 1, "score": 0 }, { "doc_id": "159124544", "title": "The Political Economy of Facebook Advertising: Election Spending, Regulation and Targeting Online", "abstract": "Political advertising on Facebook is the latest in a long line of developments in campaign practice, and is a tool that has been mobilised extensively in elections around the world. In this article, we explore what we know about Facebook advertising at elections and ask what existing data from the UK Electoral Commission can reveal about current usage. Highlighting the principles behind Facebook advertising, we argue that existing metrics offer little insight into current campaign trends posing analytical, methodological and normative challenges for academics and electoral regulators alike. Moreover, we argue that these challenges strike at the heart of debates about democratic responsibility and the degree to which governments should cede responsibility to commercial actors who may have differing understandings of fundamental democratic norms.", "corpus_id": 159124544, "venue": "The Political Quarterly", "year": 2019, "author_names": [ "Katharine Dommett", "Sam Power" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "213804797", "title": "Understanding The Factors Driving Consumers' Purchase Intention of Over The Counter Medications Using Social Media advertising In Egypt: (A Facebook advertising application for cold and Flu products)", "abstract": "Abstract In 2015, the Egyptian health authorities released a decree with a clear definition for over the counter medications. The decree allowed pharmaceutical companies to advertise their products directly to consumers via different advertising channels. The main objective of this research is to help pharmaceutical marketers in Egypt to better understand the factors that affect Egyptian consumers' purchase intention. We advertised a cold and flu product as an example of over the counter product (OTC) using a Facebook advertising application. We then analyzed the data and we found that the Electronic Word of Mouth (E WOM) had the highest percentage in affecting the consumer's decisions. The strongest E WOM factors were the sharing tool, followed by friends' likes, and comments.", "corpus_id": 213804797, "venue": "", "year": 2019, "author_names": [ "Nermeen Magdi Mekawie", "Aly Hany" ], "n_citations": 8, "n_key_citations": 1, "score": 0 }, { "doc_id": "203189452", "title": "Consumers' Responses to Facebook Advertising across PCs and Mobile Phones", "abstract": "ABSTRACT Social networking sites, such as Facebook, are an important and fast growing advertising channel. Because access to social networking sites may happen through different devices, it is important to identify whether the drivers and mitigating factors affecting responses to social networking site advertising differ between consumers who access Facebook primarily on PCs versus on mobile phones. The authors tested a model anchored in social exchange theory and drawing on uses and gratifications theory, using data from a survey of Facebook users in France. Results show that the trade off between the intrinsic and social value Facebook advertisements bring and their perceived intrusiveness and privacy invasiveness drives consumers' approach and avoidance of Facebook advertising. Trust in Facebook also emerged as a key driver of advertisement acceptance.", "corpus_id": 203189452, "venue": "Journal of Advertising Research", "year": 2019, "author_names": [ "Caroline Lancelot Miltgen", "Anne-Sophie Cases", "Cristel Antonia Russell" ], "n_citations": 11, "n_key_citations": 0, "score": 0 }, { "doc_id": "145822821", "title": "Facebook advertising for recruitment of midlife women with bothersome vaginal symptoms: A pilot study", "abstract": "Background The MsFLASH (Menopause Strategies: Finding Lasting Answers for Symptoms and Health) Network recruited into five randomized clinical trials (n 100 350) through mass mailings. The fifth trial tested two interventions for postmenopausal vulvovaginal symptoms (itching, pain, irritation, dryness, or pain with sex) and thus required a high level of sensitivity to privacy concerns. For this trial, in addition to mass mailings we pilot tested a social media recruitment approach. We aimed to evaluate the feasibility of recruiting healthy midlife women with bothersome vulvovaginal symptoms to participate in the Vaginal Health Trial through Facebook advertising. Methods As part of a larger advertising campaign that enrolled 302 postmenopausal women for the 12 week randomized, double blind, placebo controlled Vaginal Health Trial from April 2016 to February 2017, Facebook advertising was used to recruit 25 participants. The target population for recruitment by mailings and by Facebook ads included women aged 50 70 years and living within 20 miles of study sites in Minneapolis, MN and Seattle, WA. Design of recruitment letters and Facebook advertisements was informed by focus group feedback. Facebook ads were displayed in the \"newsfeed\" of targeted users and included a link to the study website. Response rates and costs are described for both online ads and mailing. Results Facebook ads ran in Minneapolis for 28 days and in Seattle for 15 days, with ads posted and removed from the site as needed based on clinic flow and a set budget limit. Our estimated Facebook advertising reach was over 200,000 women; 461 women responded and 25 were enrolled at a cost of US$14,813. The response rate per estimated reach was 0.22% costs were US$32 per response and US$593 per randomized participant. The social media recruitment results varied by site, showing greater effectiveness in Seattle than in Minneapolis. We mailed 277,000 recruitment letters; 2166 women responded and 277 were randomized at a cost of US$98,682. The response rate per letter sent was 0.78% costs were US$46 per response and US$356 per randomized participant. Results varied little across sites. Conclusion Recruitment to a clinical trial testing interventions for postmenopausal vaginal symptoms is feasible through social media advertising. Variability in observed effectiveness and costs may reflect the small sample sizes and limited budget of the pilot recruitment study.", "corpus_id": 145822821, "venue": "Clinical trials", "year": 2019, "author_names": [ "Katherine A Guthrie", "Bette J Caan", "Susan J Diem", "Kristine E Ensrud", "Sharon R Greaves", "Joseph C Larson", "Katherine M Newton", "Susan D Reed", "Andrea Z LaCroix" ], "n_citations": 6, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "141187024", "title": "Developing Reflective Judgment: Understanding and Promoting Intellectual Growth and Critical Thinking in Adolescents and Adults. Jossey Bass Higher and Adult Education Series and Jossey Bass Social and Behavioral Science Series.", "abstract": "Reflective Judgment: A Neglected Facet of Critical Thinking. Creating a New Theoretical Model of Reflective Judgment. The Seven Stages of Reflective Judgment. Assessing Reasoning Skills. Assessing Reflective Judgment. Research on the Reflective Judgment Model (with Phillip K. Wood) Relating Reflective Judgment to Intellectual Development. Reflective Judgment and Character Development. Fostering Reflective Judgment in the College Years.", "corpus_id": 141187024, "venue": "", "year": 1994, "author_names": [ "Patricia M King", "Karen Strohm Kitchener" ], "n_citations": 2061, "n_key_citations": 195, "score": 0 }, { "doc_id": "73489894", "title": "Social environmental factors and cognitive and behavioral functioning in pediatric sickle cell disease", "abstract": "ABSTRACT Sickle cell disease (SCD) an inherited blood disorder that primarily affects individuals of African descent, is associated with serious medical complications as well as numerous social environmental risk factors. These social environmental factors are linked to long standing social inequities, such as financial hardship and racial discrimination, both of which impact cognitive and behavioral functioning in youth. Previous research on the relationship between social environmental risk and psychological functioning has primarily relied on non modifiable, unidimensional measures of socioeconomic status (SES) such as income and parental education, as a proxy for social environmental risk. The current study aimed to address the limitations associated with typical SES type measures by comparing the unique and shared association of SES and more targeted and modifiable social environmental factors (e.g. parent and family functioning) with specific areas of cognitive and behavioral adjustment in pediatric SCD. Seventy children ages 4 8 years old and their parents completed measures of social environmental risk and psychological adjustment. Exploratory factor analysis indicated parent and family functioning measures were largely independent of SES. Parent and family functioning predicted phonological processing and ADHD symptoms above and beyond SES alone. In addition, the predictive ability of social environmental risk factors appears to vary by genotype severity for measures of social functioning and math problem solving ability. Future studies are needed to explore more specific and well supported models of modifiable social environmental risk and the relative impact of social environmental risk on cognitive and behavioral functioning.", "corpus_id": 73489894, "venue": "Child neuropsychology a journal on normal and abnormal development in childhood and adolescence", "year": 2019, "author_names": [ "Sarah E Bills", "Jeffrey Schatz", "Steven J Hardy", "Laura Reinman" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "8172054", "title": "Personal Social Capital Scale: an instrument for health and behavioral research.", "abstract": "The concept of social capital has drawn much attention in social and behavioral epidemiology and health education research. The purpose of this study is to develop the 'Personal Social Capital Scale' for quantitative survey studies of social factors that are related to health and behavior. The instrument contained 10 composite items based on 42 items for assessing personally owned social capital, including bonding and bridging capitals. The instrument was assessed using cross sectional survey data collected among 128 participants (64 women) with a participation rate of 95% Results from correlation and confirmatory factor analysis indicated adequate reliability and internal consistency. The mean score of the scale was 25.9 (SD 5.2) for total social capital, 15.2 (SD 3.0) for bonding social capital and 10.8 (SD 3.4) for bridging social capital. The scale scores significantly predicted a number of theoretically related factors, including people skills, being sociable, social capital investment, informational support, instrumental support, emotional support and collective efficacy. This instrument provides a new tool for cross cultural research to assess personally owned social capital.", "corpus_id": 8172054, "venue": "Health education research", "year": 2009, "author_names": [ "Xuechun Chen", "Bonita F Stanton", "Jie Gong", "Xiaomei Fang", "Xiaohui Li" ], "n_citations": 115, "n_key_citations": 13, "score": 0 }, { "doc_id": "151559433", "title": "Mixed Methods Research in Education: Capturing the Complexity of the Profession", "abstract": "Mixed methods research is recognized as a third model of research in social and behavioral sciences. Its value for educational research just recently began to be discussed in the literature (Ponce, 2014: Scott Sutton, 2009: Ellis, 2005) A mixed methods research study means the use of quantitative and qualitative methods as components of a research design (Caruth, 2013; Ponce, 2011; Creswell, 2009; Greene, 2007) or a research program (Phillips, 2009) Most of the literature on mixed methods research could be considered generic (Creswell, 2009) This means that the discussion centered on research designs with little or no relation to any particular disciplinary context. According to Creswell (2009) the development of literature in a particular discipline's context, using mixed methods research, will help to strength the mixed research movement. In this article, the authors explain mixed methods research and its possible uses, strengths, and challenges in educational research.", "corpus_id": 151559433, "venue": "", "year": 2015, "author_names": [ "Omar Antonio Ponce", "Nellie Pagan-Maldonado" ], "n_citations": 61, "n_key_citations": 2, "score": 0 }, { "doc_id": "13770013", "title": "Immersive Virtual Environment Technology: A Promising Tool for Future Social and Behavioral Genomics Research and Practice", "abstract": "Social and behavioral research needs to get started now if scientists are to direct genomic discoveries to address pressing public health problems. Advancing social and behavioral science will require innovative and rigorous communication methodologies that move researchers beyond reliance on traditional tools and their inherent limitations. One such emerging research tool is immersive virtual environment technology (virtual reality) a methodology that gives researchers the ability to maintain high experimental control and mundane realism of scenarios; portray and manipulate complex, abstract objects and concepts; and implement innovative implicit behavioral measurement. This report suggests the role that immersive virtual environment technology can play in furthering future research in genomics related education, decision making, test intentions, behavior change, and health care provider behaviors. Practical implementation and challenges are also discussed.", "corpus_id": 13770013, "venue": "Health communication", "year": 2009, "author_names": [ "Susan Persky", "Colleen M McBride" ], "n_citations": 29, "n_key_citations": 0, "score": 0 }, { "doc_id": "149079883", "title": "A Framework for K 12 Science Education: Practices, crosscutting concepts, and core ideas: National Research Council, Board on Science Education, Division of Behavioral and Social Sciences and Education", "abstract": "JUAN CARLOS AGUILAR is the director of innovated programs and research at the Georgia Department of Education. He serves as liaison between the department and science organizations, and with the Georgia University System in science. He serves on the board of directors for the Georgia Youth Science and Technology Centers and board of advisors for Valdosta STEAM. He served as the Department of Education science program manager for 9 years, when he oversaw state policy in science education, coordinated K 12 science curriculum development, co directed Georgia's K 12 STEM initiative, and supervised the alignment of state assessments with the Georgia Performance Standards for science. He led the revision and adoption of the new Georgia Standards of Excellence in Science. He is the past president of the Council of State Science Supervisors. He is an advisor for the NIH SEPA 2015 Emory grant entitled Experiential Citizen Science Training for the Next Generation. He previously taught, including 10 years as a science and mathematics teacher at a Spanish immersion middle school and 5 years as a high school physics teacher, both in Fayette County, Georgia. He also taught science and mathematics for 4 years at a high school in Guatemala City. He has a Licenciature in Physics from the University Del Valle of Guatemala. He received a principal certification from Morehead State University, M.S. in physics from the University of Louisville, and Ph.D. in physics from the University of Kentucky.", "corpus_id": 149079883, "venue": "", "year": 2012, "author_names": [ "Brian J Reiser" ], "n_citations": 162, "n_key_citations": 5, "score": 0 }, { "doc_id": "232292065", "title": "Promoting Children's Mental, Emotional, and Behavioral (MEB) Health in All Public Systems, Post COVID 19", "abstract": "The COVID 19 pandemic exacerbates the mental, emotional, and behavioral (MEB) health problems of children and adolescents in the United States (U.S. A collective and coordinated national economic and social reconstruction effort aimed at shoring up services to promote children's MEB, like the Marshall Plan that helped rebuild Europe post World War II, has been proposed to buttress against the expected retrenchment. The plan prioritizes children's well being as a social objective. We propose strategically reconstructing the public safety net systems serving youth, including early education, maternal and child health, child welfare, corrections, and mental health. That plan called for a concentrated focus on coalition building and contracting by state mental health systems to establish a foundation for an improved health system. This paper offers a complementary set of suggestions for the four non mental health systems mentioned above by recommending actionable steps based on scientific evidence to support improved services for children at risk for MEB problems. For each system we describe examples of evidence informed services, policies or programs that (1) prevent disabilities and promote health, (2) protect and preserve families and neighborhoods, and (3) provide quality care. Prioritizing the promotion of children's MEB health by all state systems can shape U.S. children's health and well being for generations to come.", "corpus_id": 232292065, "venue": "Administration and Policy in Mental Health and Mental Health Services Research", "year": 2021, "author_names": [ "Kimberly Eaton Hoagwood", "William Gardner", "Kelly J Kelleher" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "8058914", "title": "Special Needs Students in Inclusive Classrooms The Impact of Social Interaction on Educational Outcomes for Learners with Emotional and Behavioral Disabilities", "abstract": "he article pursues literature research on the vital question: to what extent does explicit verbal persuasion, consistently provided by a special education teacher, increase the self efficacy of students with specific learning disabilities receiving testing accommodations in general education classes? The theoretical framework seeks to highlight the motivational factor of verbal persuasion and its effect on the self efficacy of students with specific learning disabilities. Additionally, this framework seeks to address the influence of self regulatory learning on self efficacy. Finally, recommendations are offered for classroom implementation.", "corpus_id": 8058914, "venue": "", "year": 2012, "author_names": [ "Michael Lamport" ], "n_citations": 67, "n_key_citations": 5, "score": 0 }, { "doc_id": "80170547", "title": "Social and Emotional Learning: Introducing the Issue", "abstract": "Stephanie Jones is the Marie and Max Kargman Associate Professor in Human Development and Urban Education at Harvard Graduate School of Education. Emily J. Doolittle is team lead for social behavioral research in the National Center for Education Research, Institute of Education Sciences, US Department of Education. Research increasingly suggests that social and emotional learning (SEL) matters a great deal for important life outcomes like success in school, college entry and completion, and later earnings. This research also tells us that SEL can be taught and nurtured in schools so that students increase their ability to integrate thinking, emotions, and behavior in ways that lead to positive school and life outcomes. Although the term social and emotional learning has been around for 20 years, we've recently seen a rapid surge in interest in SEL among parents, educators, and policymakers. For example, the Collaborative for Academic, Social, and Emotional Learning (CASEL) is supporting 10 large school districts and 45 smaller ones through its Collaborating Districts Initiative as they begin to incorporate a variety of SEL programs and practices into their schools. CASEL also recently launched a Collaborating States Initiative to support states as they develop policies, standards, and guidelines for SEL in schools. All 50 states have SEL standards in place at the preschool level, and four (Illinois, Kansas, West Virginia, and Pennsylvania) have SEL standards for kindergarten through 12th grade. And the Aspen Institute recently launched a National Commission on Social, Emotional, and Academic Development to explore how schools can fully integrate SEL into policies and instruction that have traditionally emphasized academics. We also know that teachers believe SEL skills can be taught, although they may not always know the best way to do so in their classrooms.1", "corpus_id": 80170547, "venue": "", "year": 2017, "author_names": [ "Stephanie M Jones", "Stephanie M Sophie P Rebecca Emily J Doolittle" ], "n_citations": 61, "n_key_citations": 10, "score": 1 }, { "doc_id": "18760191", "title": "Ethical, legal, social, and policy implications of behavioral genetics.", "abstract": "The field of behavioral genetics has engendered a host of moral and social concerns virtually since its inception. The policy implications of a genetic basis for behaviors are widespread and extend beyond the clinic to the socially important realms of education, criminal justice, childbearing, and child rearing. The development of new techniques and analytic approaches, including whole genome sequencing, noninvasive prenatal genetic testing, and optogenetics, has clearly changed the study of behavioral genetics. However, the social context of biomedical research has also changed profoundly over the past few decades, and in ways that are especially relevant to behavioral genetics. The ever widening scope of behavioral genetics raises ethical, legal, social, and policy issues in the potential new applications to criminal justice, education, the military, and reproduction. These issues are especially critical to address because of their potentially disproportionate effects on vulnerable populations such as children, the unborn, and the incarcerated.", "corpus_id": 18760191, "venue": "Annual review of genomics and human genetics", "year": 2013, "author_names": [ "Colleen M Berryessa", "Mildred K Cho" ], "n_citations": 20, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "23908447", "title": "Serum Level of HER 2/neu in Patients with Gastric Cancer: Correlation with HER 2/neu Overexpression in Gastric Carcinoma Tissue", "abstract": "Serum HER 2/neu (c erbB 2) levels in patients with gastric cancer were evaluated by an enzyme linked immunosorbent assay and tissue levels of HER 2/neu in the same cohort were determined by immunohistochemistry. Nine (16% of 57 gastric carcinomas had an overexpression of HER 2/neu detected immunohistochemically. Of these 9 patients, 6 had elevated serum HER 2/neu levels, while 45 of 48 tissue samples with negative staining exhibited normal serum HER 2/neu levels. These results indicated that overall accuracy, positive predictive value, and negative predictive values of their serum measurements were 89, 67 and 94% respectively. Serum levels of HER 2/neu were correlated with tissue overexpression of HER 2/neu in patients with gastric cancer.", "corpus_id": 23908447, "venue": "Tumor Biology", "year": 2000, "author_names": [ "Koji Kono", "Hiroshi Naganuma", "Takayoshi Sekikawa", "Hideki Amemiya", "Akihiro Takahashi", "Hidehiko Iizuka", "Yoshiro Matsumoto" ], "n_citations": 23, "n_key_citations": 0, "score": 0 }, { "doc_id": "18524905", "title": "HER2 status in advanced gastric carcinoma: A retrospective multicentric analysis from Sicily", "abstract": "According to the ToGA trial, HER2 has been shown to be predictive for the success of treatment with trastuzumab in advanced gastric cancer (AGC) A number of studies have analyzed HER 2/neu overexpression in gastric carcinoma and identified the rate of HER2 positivity to be markedly varied. To date, the prevalence of HER2 overexpression in Sicilian people with AGC is unknown. Therefore, in the present study, a retrospective immunohistochemical analysis of HER2 was performed in a cohort of 304 AGC samples that were obtained from the archives of 10 Sicilian anatomopathological diagnostic units in order to verify the positive rate of HER2 positive cases. Furthermore, the characteristics of histotype, grade, stage and Ki 67 expression were also analyzed. HER2 overexpression was encountered in 17.43% of all the gastric adenocarcinomas, which was consistent with the results that have been reported elsewhere in the literature. A progressive increase in HER2 overexpression was observed, from the poorly cohesive histotype to the tubular adenocarcinomas and gastric hepatoid adenocarcinomas. HER2 overexpression was significantly associated with a high grade, advanced stage and high Ki 67 labeling index. Further investigations performed jointly by pathologists and oncologists within the geographical area of the present study should confirm that the association of trastuzumab with chemotherapy results in an improvement of survival in patients with AGC.", "corpus_id": 18524905, "venue": "Oncology letters", "year": 2013, "author_names": [ "Antonio Ieni", "Valeria Barresi", "Giuseppe Giuffre", "Rosario Alberto Caruso", "Salvatore Lanzafame", "Loredana Villari", "Edvige Salomone", "Elena Roz", "Daniela Cabibi", "Vito Franco", "Giovanna Certo", "Agata Labate", "Claudia Nagar", "Emilia Magliolo", "B Broggi", "Concetta Fazzari", "Fabrizio Italia", "Giovanni Tuccari" ], "n_citations": 26, "n_key_citations": 1, "score": 0 }, { "doc_id": "10179695", "title": "HER 2/Neu Status in Gastric Carcinomas in a Series of Egyptian Patients and Its Relation to Ki 67 Expression", "abstract": "Objective: HER 2/neu status in gastric carcinomas (GCs) has not been studied before in the Egyptian population. Materials and Methods: Seventy three GCs were evaluated for the expression of HER 2/neu and Ki 67 using immunohistochemistry (IHC) Fluorescence in situ Hybridization (FISH) was done for HER2/neu IHC score 2+ cases. Results: Out of the 73 gastric carcinomas, 23 (31.5% were score 0, 17 (23.3% were score 1+ 23 (31.5% were score 2+ and 10 (13.7% were score 3+ FISH analysis revealed that the HER 2/neu gene was amplified in 11 out of the 23 cases (47.8% scored 2+ by IHC. Therefore, the overall HER 2/neu positivity rate was 28.8% and it was significantly associated with higher T stage and lymphovascular invasion (LVI) The Ki 67 expression rate ranged between 10% and 100% with 84.9% of the cases (n 62) featuring high Ki 67 scores. High Ki 67 score was significantly associated with male sex, tumor grade, and number of positive nodes. HER 2/neu protein expression correlated significantly with Ki 67 score. Twenty tumors showed combined HER 2/neu positivity and high Ki 67 score and were significantly associated with higher T stage and occurrence of LVI, implying a more aggressive behavior. Conclusions: The rate of HER 2/neu positive GCs in our series simulates universal rates, thereby mandating routine evaluation of HER 2/neu status in all GCs submitted to our laboratory to benefit from trastuzumab therapy. Further studies on a larger number of GCs are required to prove that the concurrent HER 2/neu positivity and high Ki 67 score are markers of worse prognosis.", "corpus_id": 10179695, "venue": "", "year": 2015, "author_names": [ "Saba El-Gendi", "Iman Mamdouh Talaat", "Mona Abdel-Hadi" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "74549514", "title": "Role of Her 2 Neu in Gastric Carcinoma 3 Year Study in a Medical College Hospital", "abstract": "rd most common cause of mortality of all cancers in both sexes. It constitutes 8.5% of all cancers with 73.5% of all gastric cancers occurring in Asian countries.The crude and age standardised rate are 12.2 and 11.4/1,00,000 population world wide and in India it is 5.0 and 6.1/ 1,00,000 population respectively. 1 Gastric adenocarcinoma has a dismal prognosis with a median survival of few months in advanced cases 2 There is a constant search for newer modalities of treatment in gastric cancer to improve the survival. A recent phase III trial (ToGA trial) in which trastuzumab with chemotherapy was given in Her 2 positive cancers there was improvement in overall survival in locally advanced, recurrent and metastatic gastric cancer when compared to chemotherapy alone.2 Her 2 /neu is a transmembranetyrosinekinase receptor which is a member of the growth factor receptor family and targeted therapy by monoclonal antibody was found effective in neoadjuvant, adjuvant and palliative setting in breast cancer in various randomized controlled trials. As in breast cancer wherein 30% of cases have Her 2/neu positivity the incidence of Her2 positivity in gastric cancer varied in different studies based on stage of cancer, location of tumor and geographic area where it was studied. 3", "corpus_id": 74549514, "venue": "", "year": 2014, "author_names": [ "Varra Lakshmi", "Jangala Madhavi" ], "n_citations": 11, "n_key_citations": 4, "score": 0 }, { "doc_id": "75239798", "title": "Expression and clinical significance of HER 2/neu in gastric carcinoma", "abstract": "(Objective) To investigate the expression of epidermal growth factor receptor(HER) 2/neu in gastric cancer,and its clinicopathologic significance.(Methods) The expressions of HER 2/neu in 67 gastric carcinomas were detected by immunohistochemistry and analyze the relationship of the expression to clinicopathologic data of the patients.(Results) The positive expression of HER 2/neu were detected in 15 of 67 gastric cancer specimens(22.4%,but not in adjacent normal tissue.The expression of HER 2/neu was not correlated to sex,age and histological grades of patients(P0.05),but to the lauren's classification,lymph node metastasis and clinical stage(P0.05).The median survival time of patients with positive expression of HER 2/neu was 30.0 months,while the patients with negtive was 50.0 months.The difference was significant(P0.05).Cox multivariate analysis showed that HER 2/neu and clinical stages were independent determinants of overall survival.(Conclusions) Determination of the expression of HER 2/neu in gastric carcinoma tissues might be helpful to determine the prognosis of the patients with gastric carcinoma.", "corpus_id": 75239798, "venue": "", "year": 2010, "author_names": [ "Guo Jian-bo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "80167920", "title": "Expression and prognostic significance of E Cadherin, EGFR, p53 and HER 2/NEU in Gastric Carcinoma.", "abstract": "Stomach cancer is the fourth most common cancer worldwide (1) It is a disease with a high death rate ~700,000 per year) making it the second most common cause of cancer death worldwide after lung cancer(2) It is more common in men than in women with a ratio of 1.6:1(1, 3) It is a disease of middle aged and elderly with a peak incidence at around 65 years (1) Although a steady decline in the incidence of gastric carcinoma has been noted worldwide, the absolute number of new cases per year is increasing mainly because of the aging population. Decline in incidence rate is seen in the western countries (4) In Asia it is still one of the most common malignancies accounting for 18% of all malignancies. In countries like Japan and Korea it accounts for 56% of malignancies (5) More than 50% of cases present in advanced unresectable stages making cure impossible. The overall 5 year survival rate is 28% irrespective of the stage at which the patient presents. The morphological and histological types of gastric carcinomas are variable and they may not correlate well with the prognosis. The prognosis is mainly dependant on the clinical stage of the disease. But even within a specific stage, there is variability in prognosis from patient to patient. There has been a constant search for specific biological markers to identify the subgroups of patients with more aggressive course of the disease (6) E Cadherin, EGFR, p53 and HER 2/Neu have been proposed as potential tool for the evaluation of prognosis of gastric cancer. E Cadherin plays a crucial role in cell cell adhesion in epithelial tissues. The decreased E Cadherin expression correlates with dedifferentiation, infiltrative tumour growth, distant metastasis, and poor survival for patients with certain carcinomas. Epidermal Growth Factor Receptor (EGFR) is a transmembrane tyrosine kinase receptor, and is one of the members of EGFR family of receptors. This receptor activation causes stimulation of the downstream signaling pathway that regulates cell proliferation, migration, adhesion, differentiation and survival. Gene amplification and or protein over expression of EGFR have been observed in a variety of solid tumours. p53 is a tumour suppressor gene which negatively regulates cell cycle. A loss of function mutation in p53 gene results in enhanced proliferative activity and tumour progression. In contrast to the normal p53 protein, the mutated p53 protein has an increased half life and hence accumulates within the cell nucleus. This can be detected immunohistochemically using monoclonal antibodies. CONCLUSION The incidence of gastric carcinoma in the year 2011 in RGGGH was 3.26% Many patients were older than 55 years of age with male preponderance which is similar to several other studies conducted throughout the world. Females showed a younger mean age of incidence compared to males. 29% of cases showed reduced expression of E Cadherin. A significant association was found between reduced expression of E Cadherin and reduced survival. A significant association of EGFR over expression was found with moderately differentiated grade. No significant association was found between EGFR expression and survival. An increased frequency of cases with p53 positivity showed intestinal type of Lauren's classification, moderately and poorly differentiated grades and no association between p53 positivity and survival was found. All the cases which showed HER 2/Neu over expression showed T3 level of infiltration, no association with HER 2/Neu expression and survival was found. To conclude, identifying the expression of E Cadherin, EGFR, P53 and HER 2/Neu in gastric carcinoma can help to identify patients with reduced survival and to identify eligible candidates for targeted therapy. A larger sample size and follow up for a longer period might shed more light on the role of the above markers in gastric carcinoma.", "corpus_id": 80167920, "venue": "", "year": 2013, "author_names": [ "S Tharageswari" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "5106285", "title": "Expression of pRb, Ki67 and HER 2/neu in gastric carcinomas: Relation to different histopathological grades and stages.", "abstract": "Gastric carcinoma is one of the aggressive malignancies with poor prognosis. The expression of pRb, Ki67, Her 2 in relation to tumor grade and stage in gastric carcinoma still needs more exploration. This study was performed aiming to study the immunohistochemical expression of altered retinoblastoma encoding protein (pRb) Ki67 and Her 2 in gastric carcinoma and to investigate their clinical and pathological significance. We studied tumor tissue specimens from 48 patients with gastric carcinoma. Paraffin sections were submitted for immunohistochemistry using pRb, Ki67 and Her 2. Statistical analysis was performed for clinical and pathological data of all studied cases. Altered pRb was expressed in 79% of the studied tumors, inversely correlated with tumor invasion and stage with no significant relation with tumor grade, age, and gender and tumor size. Ki67 LI was significantly associated with tumor grade and stage but not related to sex, age, tumor size, site, depth of invasion and lymph node metastasis. Her2 was expressed in 75% of studies tumors with significant association with tumor grade, the depth of invasion, lymph node metastasis and higher tumor stage. However, there was no significant association between Her 2 expression and gender, tumor site and size. In conclusion, altered pRb is frequently expressed in gastric carcinoma, inversely correlates with tumor invasion and tumor stage suggesting an early event in gastric carcinogenesis. Ki67 expression in gastric carcinoma is directly correlated with the tumor grade and depth of invasion. Her2 expression is significantly correlated with tumor grade, depth of invasion and stage.", "corpus_id": 5106285, "venue": "Annals of diagnostic pathology", "year": 2017, "author_names": [ "Azza Abdel-aziz", "Rehab Allah Ahmed", "Afaf T Ibrahiem" ], "n_citations": 8, "n_key_citations": 1, "score": 1 }, { "doc_id": "87840184", "title": "Expression and its correlation of Cox 2 and Her 2/neu in gastric carcinoma tissues", "abstract": "Aim To study the correlation of cyclooxygenase 2(Cox 2) and Her 2 /neu in gastric carcinoma and their relationship with clinicopathologic features.Methods The expression of Cox 2 and Her 2 /neu in 419 cases of gastric carcinoma was detected by immuno histochemical technique.The results were analysed by SPSS 13.0.Results In 419 cases of gastric carcinoma the positive rate of Cox 2 was 66.35%(278 /419).No correlation was found between increased Cox 2 and the tumor size,differentiation,lymph node metasta sis,clinical stage,distant metastasis and depth of invasion of gastric carcinoma(P 0.05).The positive rate of Her 2 /neu was 13.6%(57/419).Her 2/neu expression was correlated with differentiation(P 0.05).No correlation was found between increased Her 2/ neu and the tumor size,lymph node metastasis,clinical stage,distant metastasis and depth of invasion of gastric carcinoma(P 0.05).The expression of Her 2 /neu was significantly correlated with Cox 2(P 0.025).Conclusion Her 2 /neu expression was correlated with high and middle diferentiation in gastric carcinoma.Cox 2 expression is obviously high in gastric carcinoma which Her 2 /neu expres sion is positive.The overexpression of Cox 2 and Her 2 /neu in gastric carcinoma is closely correlated.", "corpus_id": 87840184, "venue": "", "year": 2010, "author_names": [ "Fu Wei-zheng" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "195470713", "title": "Histopathological Analysis and Study on Expression of HER2 and Ki 67 in Gastric Carcinomas", "abstract": "BACKGROUND: Carcinoma of stomach is one of the leading causes of cancer deaths in the world. Paucity of the clinical symptoms, delays early detection of this killer disease. Hence resulting in a majority of patients presenting in an advanced or inoperable stage of the disease. In this era of medicine where targeted molecular therapy is gaining importance two markers in relation to gastric carcinoma are analysed. One such marker is HER2 neu. Many studies had predicted amplification of this protein in gastric carcinoma. The other marker is Ki 67. According to various studies Ki 67 reflects the cell proliferation characteristics that reflect the aggressive behavior of tumour. In this study the histopathological characters and relationship between tumour grading and expression of HER2 and Ki 67 were analysed. METHODS: This study was carried out in the Department of Pathology, Thanjavur Medical College from the Period of July 2012 June 2014. A total of 140 cases of Gastric carcinoma were analysed. This included 90 endoscopic biopsies and 50 gastrectomy specimens. The Co relation with age, sex, anatomical location, histological type, grading, extent of tumour invasion and nodal status were analysed. Immunohistochemistry was used to analyse the amplification of HER2 and degree of Ki 67 expression. Co relation between the grades of differentiation, HER2 amplification and Ki 67 proliferation index were studied. RESULTS: The incidence of gastric carcinoma as estimated in this study is 6.78/1000 cases. The most commonly affected age group is 50 60 years. Males are more commonly affected than females. Frank malignancy was detected in 45.6% of endoscopic biopsies in male and 40 of cases in females. The most common site of malignancy is the gastric antrum, localizing nearly 605 of cases. 83.57% of the cases were tubular adenocarcinomas. Lauren's intestinal type of tumours constituted 89.28% of cases with most of the carcinomas invading the muscular layer at the time of surgery. HER2 positivity was seen in 8% of the cases subjected to immunohistochemistry. HER2 expression was more in Intestinal type of carcinomas. Out of 25 cases analysed for Ki 67 labeling index, 52% of the cases had low Ki67 index and 48% of the Cases had a high Ki 67 index. No significant co relation was observed between the grading, HER 2 amplification and the proliferation index. CONCLUSION: In this study it was concluded that the percentage of HER 2 amplification in Gastric Carcinomas is 8% There was no significant co relation observed between the degree of HER2 amplification and Ki 67 expression with the tumour grade.", "corpus_id": 195470713, "venue": "", "year": 2015, "author_names": [ "R Divya" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "87297566", "title": "Expression and clinical significance of Her 2/neu and NF kBp65 in gastric carcinoma", "abstract": "Objective:The expression and clinical significance of Her 2/neu and NF kBp65 in gastric carcinoma tissue is investigated.Methods:The expressions of Her 2/neu and NF kBp65 were tested by PV 9000 immunohistochemical technique in 80 cases of gastric cancer and 30 cases of adjacent normal tissue,the relationship between their expression and clinicopathological features of gastric carcinoma was analyzed.Results:The positive rates of Her 2/neu in gastric carcinoma and adjacent normal tissue were respectively 17.3% and 3.3%(P0.05),over expression of Her 2/neu was significantly correlated with the degree of histodifferentiation and lymphatic metastasis(P0.05).The positive rates of NF kBp65 in gastric carcinoma and adjacent normal tissue were respectively 58.7% and 11.4%(P0.05),expression of NF kBp65 was significantly correlated with degree of histodifferentiation,the depth of invasion and lymphatic metastasis(P0.05).Her 2/neu was positively correlated with NF kBp65 in gastric cancer tissue.Conclusion:High expressions of Her 2/neu and NF kBp65 were significantly correlated with development of gastric carcinogenesis.Combining detection of Her 2/neu and NF kBp65 expression is meaningful to guide molecule targeted therapy and evaluate the prognosis of patients.", "corpus_id": 87297566, "venue": "", "year": 2010, "author_names": [ "Guo Jian-sheng" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "212742661", "title": "Effects of interoceptive training on decision making, anxiety, and somatic symptoms", "abstract": "Background Interoception is the perception of afferent information that arises from any point within the body. Individual differences in interoception have been associated with affective processing and decision making processing. The somatic marker hypothesis summarizes the potential effects of interoception on decision making processes. According to this theory, individuals with interoceptive dysfunction exhibit disadvantageous decision making. Recently, enhancement of interoceptive accuracy, an element of interoception assessed by objective decision making tasks, has been demonstrated using biofeedback. Garfinkle et al. developed an interoceptive training task, modified from the heartbeat perception task, which enhanced interoceptive accuracy and reduced anxiety symptoms. The purpose of this study was to determine the effects of interoceptive training on decision making processes. Based on improvements in interoceptive accuracy, we hypothesized that decision making scores would change in a manner indicative of increased rationality. Methods This longitudinal interventional study was performed with interoceptive training. Before and after the intervention, interoceptive accuracy and rationality of decision making processes were assessed using a heartbeat perception task and rational decision making tasks, respectively. Fourteen healthy volunteers (nine women; mean age, 21.9 4.5 years) participated. The analysis included data from 12 participants. To detect individual differences in the effects of interoceptive accuracy on rationality of decision making, correlation analysis was conducted on change ratios of the indices of interoceptive accuracy and rationality of decision making. Results Interoceptive training resulted in significant enhancement of interoceptive accuracy scores and significant reductions in somatic symptom and state anxiety scores. In contrast, interoceptive training did not cause significant changes in decision making indices. There was a significant positive correlation between change ratios of indices of interoceptive accuracy and rationality of decision making. Conclusions The results suggested a causal relation between interoception and rationality of decision making. These findings will enhance the understanding of mechanisms underlying alterations of decision making related to psychotherapy by focusing on interoception. Trial registration Trial registration number: UMIN000037548", "corpus_id": 212742661, "venue": "BioPsychoSocial Medicine", "year": 2020, "author_names": [ "Ayako Sugawara", "Yuri Terasawa", "Ruri Katsunuma", "Atsushi Sekiguchi" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "230631764", "title": "Decision Making in Young Adults: Towards a Better Understanding of Individual Differences in Decision Making Anxiety", "abstract": "", "corpus_id": 230631764, "venue": "", "year": 2020, "author_names": [ "Anna Girard" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "85515447", "title": "A Randomized Controlled Trial Comparing Learners' Decision making, Anxiety, and Task Load During a Simulated Airway Crisis Using Two Difficult Airway Aids", "abstract": "Introduction The American Society of Anesthesiologists (ASA) difficult airway algorithm and the Vortex approach are difficult airway aids. Our objective was to demonstrate that a simpler cognitive model would facilitate improved decision making during a process such as difficult airway management. We hypothesized the simpler Vortex approach would be associated with less anxiety and task load. Methods Medical students were randomized to the ASA algorithm (n 33) or Vortex approach (n 34) All learned basic airway techniques on day 1 of their rotation. Next, they watched a video of their respective aid then managed a simulated airway crisis. We assessed decision making using a seven point airway management score and a completeness score. Completeness was at least one attempt at each of four techniques (mask ventilation, supraglottic airway, intubation, and cricothyrotomy) Two validated tools, the State Trait Anxiety Inventory Form Y and the National Aeronautics and Space Administration Task Load Index, were used to assess anxiety and task load. Results Students in the Vortex group had higher airway management scores [4.0 (interquartile range 4.0 to 5.0) vs. 4.0 (3.0 to 4.0) P 0.0003] and completeness (94.1% vs. 63.6% P 0.003) In the ASA group, the means (SD) of National Aeronautics and Space Administration Task Load Index scores of 55 or higher were observed in mental [61.4 (14.4) temporal [62.3 (22.9) and effort [57.1 (15.6) domains. In the Vortex group, only the temporal load domain was 55 or higher [mean (SD) 57.8 (25.4) There was no difference in anxiety. Conclusions Medical students perform better in a simulated airway crisis after training in the simpler Vortex approach to guide decision making. Students in the ASA group had task load scores indicative of high cognitive load.", "corpus_id": 85515447, "venue": "Simulation in healthcare journal of the Society for Simulation in Healthcare", "year": 2019, "author_names": [ "Aditee P Ambardekar", "Eric B Rosero", "Ravi Bhoja", "Jerry Green", "Brett A Rebal", "Abu T Minhajuddin", "Matthew Kosemund", "Oren T Guttman", "David W Mercier" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "72948678", "title": "Relationships between Oncologist Gender, Participatory Decision Making, Anxiety and Breast Cancer Care", "abstract": "The discovery that adjuvant treatment (chemotherapy and radiotherapy) after lumpectomy contributes to high survival rates has been a groundbreaking development in modern breast cancer care. Participatory decision making (PDM) is a communication style that involves active interactions and discourse between doctors and patients. Although the receipt of adjuvant therapy for various types of cancers has been found to be linked to differences in patient physician communication, few studies have explored whether this relationship exists in breast cancer treatment. The present study, one of the first explicitly to examine demographic and psychosocial factors that may be related to adjuvant treatment rates, surveyed a sample of inner city breast cancer patients (N 105) about the type of care they received, assessing concomitant levels of participatory decision making (PDM) and anxiety. The results demonstrated that patients who indicated higher PDM tended to have lower levels of anxiety (p .01) Breast cancer patients who saw female oncologists were more likely to receive adjuvant treatment than breast cancer patients who saw male oncologists (p .05) Contrary to popular belief, patients reported equivalent levels of PDM and anxiety regardless of their physician's gender or their receipt of adjuvant treatment. The surprisingly low adjuvant treatment rates (45% in this sample suggest possible system failures in breast cancer care and indicate that more attention needs to be given to public education on the importance of receiving follow up treatment in breast cancer care.", "corpus_id": 72948678, "venue": "", "year": 2017, "author_names": [ "Allyson Weseley", "Kevin Xu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "13234003", "title": "The effect of antenatal anaesthetic consultation on maternal decision making, anxiety level and risk perception in obese pregnant women.", "abstract": "BACKGROUND Obese parturients are recognised as high risk and an antenatal anaesthetic consultation is recommended. The potential positive and negative effects of this consultation have not been investigated. This prospective observational study aimed to determine if antenatal anaesthetic consultation affects decisional conflict, anxiety scores or risk perception in obese women planning vaginal delivery. METHODS Eligible women had a body mass index of or 35 kg/m2, planning a vaginal delivery, aged or 18 years and able to complete a questionnaire presented in English. Before their anaesthetic consultation, women completed a written decisional conflict questionnaire, the Six Point Short Form of the Speilberger State Trait Anxiety Inventory and two questions regarding risk perception. All questions were repeated by telephone consultation two weeks later. Independent samples t tests were used to detect differences between pre and post test scores. RESULTS Of 114 women recruited, 89 completed the protocol and were analysed. Women had a mean SD age of 29.4+ 5.2 years and body mass index of 43.6+ 5.6 kg/m2. Decisional conflict scores were significantly lower after the consultation (30.04 vs. 16.54, P<0.001) Anxiety scores were lower (9.41 vs. 8.49, P=0.002) but this was not clinically significant. Only 19.1% of women felt their health was at risk in pregnancy; this did not change after the consultation. Thirteen women changed their preference toward epidural analgesia (P=0.01) DISCUSSION Our results support the current practice of referral of obese parturients for anaesthetic consultation, but demonstrate that most women remain unaware of the risks of obesity in pregnancy despite anaesthetic consultation.", "corpus_id": 13234003, "venue": "International journal of obstetric anesthesia", "year": 2014, "author_names": [ "Victoria Eley", "Katherine Donovan", "E Walters", "R Brijball", "Diann S Eley" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "32898679", "title": "Relationships between Oncologist Gender Participatory Decision Making Anxiety and Breast Cancer Care", "abstract": "The discovery that adjuvant treatment (chemotherapy and radiotherapy) after lumpectomy contributes to high survival rates has been a groundbreaking development in modern breast cancer care. Participatory decision making (PDM) is a communication style that involves active interactions and discourse between doctors and patients. Although the receipt of adjuvant therapy for various types of cancers has been found to be linked to differences in patient physician communication, few studies have explored whether this relationship exists in breast cancer treatment. The present study, one surveyed a sample of inner city breast cancer patients (N 105) about the type of care they received, assessing concomitant levels of participatory decision making (PDM) and anxiety. The results demonstrated that patients who indicated higher PDM tended to have lower levels of anxiety (p .01) Breast cancer patients who saw female oncologists were more likely to receive adjuvant treatment than breast cancer patients who saw male oncologists (p .05) Contrary to popular belief, patients reported equivalent levels of PDM and anxiety regardless of their physician's gender or their receipt of adjuvant treatment. The surprisingly low adjuvant treatment rates (45% in this sample suggest possible system failures in breast cancer care and indicate that more attention needs to be given to public education on the importance of receiving follow up treatment in breast cancer care.", "corpus_id": 32898679, "venue": "", "year": 2015, "author_names": [ "Komal A Kothari", "Jona Zumeris", "Harold Jacob", "John D Loike" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "222648190", "title": "Faculty Opinions recommendation of The effect of antenatal anaesthetic consultation on maternal decision making, anxiety level and risk perception in obese pregnant women.", "abstract": "", "corpus_id": 222648190, "venue": "", "year": 2014, "author_names": [ "Philip Popham", "Sian Griffiths" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "148332744", "title": "An Analysis of the Influencing Factors of College Students' Career Decision making Anxiety", "abstract": "The college students' anxiety of career decision making is a common problem.This paper,based on the analysis of the process and manifestation of the career decision making anxiety,studied the impact of three factors of career decision making anxiety the internal and external stimuli and the cognitive evaluations,and suggested that university should take actions to resolve or reduce anxiety,such as establishing an education system to improve the students' capability for career decision making,cultivating students' ability to release stress through solving the problems,and enhancing the students' skills training,etc.", "corpus_id": 148332744, "venue": "", "year": 2010, "author_names": [ "Lou Ling-di" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "151966530", "title": "Relationships between graduates' career decision making anxiety, career decision making self efficacy and employment pressure coping style", "abstract": "", "corpus_id": 151966530, "venue": "", "year": 2010, "author_names": [ "Keshun Zhang", "Ping Fang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "52928325", "title": "Relationship between physicians' death anxiety and medical communication and decision making: A systematic review.", "abstract": "OBJECTIVE To examine the relationship between physicians' death anxiety and medical communication and decision making. It was hypothesized that physicians' death anxiety may lead to the avoidance of end of life conversations and a preference for life prolonging treatments. METHODS PubMed and PsycInfo were systematically searched for empirical studies on the relation between physicians' death anxiety and medical communication and decision making. RESULTS This review included five quantitative and two qualitative studies (N 7) Over 38 relations between death anxiety and communication were investigated, five were in line with and one contradicted our hypothesis. Physicians' death anxiety seemes to make end of life communication more difficult. Over 40 relations between death anxiety and decision making were investigated, three were in line with and two contradicted the hypothesis. Death anxiety seemes related to physicians' guilt or doubt after a patient's death. CONCLUSIONS There was insufficient evidence to confirm that death anxiety is related to more avoidant communication or decision making. However, death anxiety does seem to make end of life communication and decision making more difficult for physicians. PRACTICE IMPLICATIONS Education focused on death and dying and physicians' emotions in medical practice may improve the perceived ease with which physicians care for patients at the end of life.", "corpus_id": 52928325, "venue": "Patient education and counseling", "year": 2019, "author_names": [ "Emma J Draper", "Marij A Hillen", "Marleen Moors", "Johannes Cf Ket", "Hanneke W M van Laarhoven", "Inge Henselmans" ], "n_citations": 21, "n_key_citations": 0, "score": 2 } ]

[ { "doc_id": "218489492", "title": "Subway: minimizing data transfer during out of GPU memory graph processing", "abstract": "In many graph based applications, the graphs tend to grow, imposing a great challenge for GPU based graph processing. When the graph size exceeds the device memory capacity (i.e. GPU memory oversubscription) the performance of graph processing often degrades dramatically, due to the sheer amount of data transfer between CPU and GPU. To reduce the volume of data transfer, existing approaches track the activeness of graph partitions and only load the ones that need to be processed. In fact, the recent advances of unified memory implements this optimization implicitly by loading memory pages on demand. However, either way, the benefits are limited by the coarse granularity activeness tracking each loaded partition or memory page may still carry a large ratio of inactive edges. In this work, we present, to the best of our knowledge, the first solution that only loads active edges of the graph to the GPU memory. To achieve this, we design a fast subgraph generation algorithm with a simple yet efficient subgraph representation and a GPU accelerated implementation. They allow the subgraph generation to be applied in almost every iteration of the vertex centric graph processing. Furthermore, we bring asynchrony to the subgraph processing, delaying the synchronization between a subgraph in the GPU memory and the rest of the graph in the CPU memory. This can safely reduce the needs of generating and loading subgraphs for many common graph algorithms. Our prototyped system, Subway (subgraph processing with asynchrony) yields over 4X speedup on average comparing with existing out of GPU memory solutions and the unified memory based approach, based on an evaluation with six common graph algorithms.", "corpus_id": 218489492, "venue": "EuroSys", "year": 2020, "author_names": [ "Amir Hossein Nodehi Sabet", "Zhijia Zhao", "Rajiv Gupta" ], "n_citations": 14, "n_key_citations": 5, "score": 0 }, { "doc_id": "219571237", "title": "G3: When Graph Neural Networks Meet Parallel Graph Processing Systems on GPUs", "abstract": "This paper demonstrates G, a programming framework for Graph Neural Network (GNN) training, tailored from Graph processing systems onGraphics processing units (GPUs) G aims at improving the efficiency of GNN training by supporting graph structured operations using parallel graph processing systems. G enables users to leverage the massive parallelism and other architectural features of GPUs in the following two ways: building GNN layers by writing sequential C/C+ code with a set of flexible APIs (Application Programming Interfaces) creating GNN models with essential GNN operations and layers provided in G. The runtime system of G automatically executes the user defined GNNs on the GPU, with a series of graph centric optimizations enabled. We demonstrate the steps of developing some common GNN structures with G, and the superior performance of G against existing GNN training systems, i.e. PyTorch and TensorFlow. PVLDB Reference Format: Husong Liu, Shengliang Lu, Xinyu Chen, and Bingsheng He. G3: When Graph Neural Networks Meet Parallel Graph Processing Systems on GPUs. PVLDB, 12(xxx) xxxx yyyy, 2019. DOI: https:/doi.org/10.14778/xxxxxxx.xxxxxxx", "corpus_id": 219571237, "venue": "Proc. VLDB Endow.", "year": 2020, "author_names": [ "Husong Liu", "Shengliang Lu", "Xinyu Chen", "Bingsheng He" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "208303216", "title": "Cost Aware Partitioning for Efficient Large Graph Processing in Geo Distributed Datacenters", "abstract": "Graph processing is an emerging computation model for a wide range of applications and graph partitioning is important for optimizing the cost and performance of graph processing jobs. Recently, many graph applications store their data on geo distributed datacenters (DCs) to provide services worldwide with low latency. This raises new challenges to existing graph partitioning methods, due to the multi level heterogeneities in network bandwidth and communication prices in geo distributed DCs. In this article, we propose an efficient graph partitioning method named Geo Cut, which takes both the cost and performance objectives into consideration for large graph processing in geo distributed DCs. Geo Cut adopts two optimization stages. First, we propose a cost aware streaming heuristic and utilize the one pass streaming graph partitioning method to quickly assign edges to different DCs while minimizing inter DC data communication cost. Second, we propose two partition refinement heuristics which identify the performance bottlenecks of geo distributed graph processing and refine the partitioning result obtained in the first stage to reduce the inter DC data transfer time while satisfying the budget constraint. Geo Cut can be also applied to partition dynamic graphs thanks to its lightweight runtime overhead. We evaluate the effectiveness and efficiency of Geo Cut using real world graphs with both real geo distributed DCs and simulations. Evaluation results show that Geo Cut can reduce the inter DC data transfer time by up to 79 percent (42 percent as the median) and reduce the monetary cost by up to 75 percent (26 percent as the median) compared to state of the art graph partitioning methods with a low overhead.", "corpus_id": 208303216, "venue": "IEEE Transactions on Parallel and Distributed Systems", "year": 2020, "author_names": [ "Amelie Chi Zhou", "B Shen", "Yao Xiao", "Shadi Ibrahim", "Bingsheng He" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "208222374", "title": "GPOP: A Scalable Cache and Memory efficient Framework for Graph Processing over Parts", "abstract": "Past decade has seen the development of many shared memory graph processing frameworks, intended to reduce the effort of developing high performance parallel applications. However many of these frameworks, based on Vertex centric or Edge centric paradigms suffer from several issues, such as poor cache utilization, irregular memory accesses, heavy use of synchronization primitives and theoretical inefficiency, that deteriorate overall performance and scalability. Recently, we proposed a cache and memory efficient partition centric paradigm for computing PageRank [26] In this paper, we generalize this approach to develop a novel Graph Processing Over Partitions (GPOP) framework that is cache efficient, scalable and work efficient. GPOP induces locality in memory accesses by increasing granularity of execution to vertex subsets called 'partitions' thereby dramatically improving the cache performance of a variety of graph algorithms. It achieves high scalability by enabling completely lock and atomic free computation. GPOP's built in analytical performance model enables it to use a hybrid of source and partitioncentric communication modes in a way that ensures work efficiency each iteration, while simultaneously boosting high bandwidth sequential memory accesses. Finally, the GPOP framework is designed with programmability in mind. It completely abstracts away underlying parallelism and programming model details from the user, and provides an easy to program set of APIs with the ability to selectively continue the active vertex set across iterations. Such functionality is useful for many graph algorithms but not intrinsically supported by the current frameworks. We extensively evaluate the performance of GPOP for a variety of graph algorithms, using several large datasets. We observe that GPOP incurs up to 9x, 6.8x and 5.5x less L2 cache misses compared to Ligra, GraphMat and Galois, respectively. In terms of execution time, GPOP is upto 19x, 9.3x and 3.6x faster than Ligra, GraphMat and Galois respectively.", "corpus_id": 208222374, "venue": "ACM Trans. Parallel Comput.", "year": 2020, "author_names": [ "Kartik Lakhotia", "Rajgopal Kannan", "Sourav Pati", "Viktor K Prasanna" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "212735029", "title": "GRETA: HARDWARE OPTIMIZED GRAPH PROCESSING FOR GNNS", "abstract": "Graph Neural Networks (GNNs) are a type of deep neural network that can learn directly from irregular graphstructured data. However, GNN inference relies on sparse operations that are difficult to implement on accelerator architectures optimized for dense, fixed sized computation. This paper proposes GReTA (Gather, Reduce, Transform, Activate) a graph processing abstraction designed to be efficient for an accelerator to execute and flexible enough to implement GNN inference. We demonstrate GReTA's advantages by designing and synthesizing a custom accelerator ASIC for GReTA and implementing several GNN models (GCN, GraphSage, G GCN, and GIN. Across several benchmark graphs, our implementation reduces 97th percentile latency by a geometric mean of 15x and 21x compared to a CPU and GPU baseline respectively.", "corpus_id": 212735029, "venue": "", "year": 2020, "author_names": [ "Kevin Kiningham" ], "n_citations": 6, "n_key_citations": 4, "score": 0 }, { "doc_id": "221107223", "title": "Balancing Graph Processing Workloads Using Work Stealing on Heterogeneous CPU FPGA Systems", "abstract": "We propose, implement and evaluate a work stealing based scheduler, called HWS, for graph processing on heterogeneous CPU FPGA systems that tightly couple the CPU and the FPGA to share system memory. HWS addresses unique concerns that arise with work stealing in the context of our target system. Our evaluation is conducted on the Intel Heterogeneous Architecture Research Platform (HARPv2) using three key processing kernels and seven real world graphs. We show that HWS effectively balances workloads. Further, the use of HWS results in better graph processing performance compared to static scheduling and a representative of existing adaptive partitioning techniques, called HAP. Improvements vary by graph processing application, input graph and number of threads, and can be up to 100% over static scheduling, and up to 17% over HAP. We also compare to an oracle chunk self scheduler, in which the best chunk size is known a priori for each number of threads and each input graph. HWS performs no worse than 1 3% in most cases. Finally, our graph processing throughput scales well with increasing threads. These results collectively demonstrate the effectiveness of work stealing for graph processing on our heterogeneous target platform.", "corpus_id": 221107223, "venue": "ICPP", "year": 2020, "author_names": [ "Matthew Agostini", "Francis O'Brien", "Tarek S Abdelrahman" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "214751453", "title": "Large scale graph processing systems: a survey", "abstract": "Graph is a significant data structure that describes the relationship between entries. Many application domains in the real world are heavily dependent on graph data. However, graph applications are vastly different from traditional applications. It is inefficient to use general purpose platforms for graph applications, thus contributing to the research of specific graph processing platforms. In this survey, we systematically categorize the graph workloads and applications, and provide a detailed review of existing graph processing platforms by dividing them into general purpose and specialized systems. We thoroughly analyze the implementation technologies including programming models, partitioning strategies, communication models, execution models, and fault tolerance strategies. Finally, we analyze recent advances and present four open problems for future research.", "corpus_id": 214751453, "venue": "Frontiers of Information Technology Electronic Engineering", "year": 2020, "author_names": [ "Ning Liu", "Dong-sheng Li", "Yiming Zhang", "Xiong-lve Li" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "219057282", "title": "An Analysis of Distributed Programming Models and Frameworks for Large scale Graph Processing", "abstract": "In recent years, processing and analysing large graphs has become a major need in many research areas. Distributed graph processing programming models and frameworks arised as a natural solution to.", "corpus_id": 219057282, "venue": "", "year": 2020, "author_names": [ "Alejandro Corbellini", "Daniela Godoy", "Cristian Mateos", "Silvia N Schiaffino", "Alejandro Zunino" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "220605953", "title": "A Heterogeneous PIM Hardware Software Co Design for Energy Efficient Graph Processing", "abstract": "Processing In Memory (PIM) is an emerging technology that addresses the memory bottleneck of graph processing. In general, analog memristor based PIM promises high parallelism provided that the underlying matrix structured crossbar can be fully utilized while digital CMOS based PIM has a faster single edge execution but its parallelism can be low. In this paper, we observe that there is no absolute winner between these two representative PIM technologies for graph applications, which often exhibit irregular workloads. To reap the best of both worlds, we introduce a new heterogeneous PIM hardware, called Hetraph, to facilitate energy efficient graph processing. Hetraph incorporates memristor based analog computation units (for high parallelism computing) and CMOS based digital computation cores (for efficient computing) on the same logic layer of a 3D die stacked memory device. To maximize the hardware utilization, our software design offers a hardware heterogeneity aware execution model and a workload offloading mechanism. For performance speedups, such a hardware software co design outperforms the state of the art by 7.54 x(CPU) 1.56 x(GPU) 4.13x (memristor based PIM) and 3.05x (CMOS based PIM) on average. For energy savings, Hetraph reduces the energy consumption by 57.58x (CPU) 19.93x (GPU) 14.02 x(memristor based PIM) and 10.48 x(CMOS based PIM) on average.", "corpus_id": 220605953, "venue": "2020 IEEE International Parallel and Distributed Processing Symposium (IPDPS)", "year": 2020, "author_names": [ "Yu Huang", "Long Zheng", "Pengcheng Yao", "Jieshan Zhao", "Xiaofei Liao", "Hai Jin", "Jingling Xue" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "221737276", "title": "GraphPulse: An Event Driven Hardware Accelerator for Asynchronous Graph Processing", "abstract": "Graph processing workloads are memory intensive with irregular access patterns and large memory footprint resulting in low data locality. Their popular software implementations typically employ either Push or Pull style propagation of changes through the graph over multiple iterations that follow the Bulk Synchronous Model. The performance of these algorithms on traditional computing systems is limited by random reads/writes of vertex values, synchronization overheads, and additional overheads for tracking active sets of vertices or edges across iterations. In this paper, we present GraphPulse, a hardware framework for asynchronous graph processing with event driven scheduling that overcomes the performance limitations of software frameworks. Event driven computation model enables a parallel dataflow style execution where atomic updates and active sets tracking are inherent to the model; thus, scheduling complexity is reduced and scalability is enhanced. The dataflow nature of the architecture also reduces random reads of vertex values by carrying the values in the events themselves. We capitalize on the update properties commonly present in graph algorithms to coalesce in flight events and substantially reduce the event storage requirement and the processing overheads incurred. GraphPulse event model naturally supports asynchronous graph processing, enabling substantially faster convergence by exploiting available parallelism, reducing work, and eliminating synchronization at iteration boundaries. The framework provides easy to use programming interface for faster development of hardware graph accelerators. A single GraphPulse accelerator achieves up to 74x speedup (28x on average) over Ligra, a state of the art software framework, running on a 12 core CPU. It also achieves an average of 6.2x speedup over Graphicionado, a state of the art graph processing accelerator.", "corpus_id": 221737276, "venue": "2020 53rd Annual IEEE/ACM International Symposium on Microarchitecture (MICRO)", "year": 2020, "author_names": [ "Shafiur Rahman", "Nael B Abu-Ghazaleh", "Rajiv Gupta" ], "n_citations": 4, "n_key_citations": 2, "score": 1 } ]

[ { "doc_id": "230282763", "title": "A KA Model: an Optimization of the Stock's Portofolio", "abstract": "Abstract The elaborate proposes a compact alternative methodology to the classical stocks portfolio optimization based on the normal distribution of the returns of the assets named Adaptable Kurtosis Asymmetry model (A KA) In the financial theory is well known that odd order moments of a distribution describe a particular performance characteristic; on the contrary, the even order moments tell a precise sense of risk of a distribution of returns. If it is true that, in general terms, minimizing the variance also minimizes the volatility of portfolio return is also true that we should minimize the kurtosis to get away from unpleasant situations in case \"Extreme\" events occur, especially if negative. The idea behind this paper is to exploit the four moments of return's distributions, optimizing an alternative risk indicator to variance, such as the kurtosis of the final distribution of the portfolio, making constraints on distributive asymmetry, in a dynamic underlying logic.", "corpus_id": 230282763, "venue": "", "year": 2020, "author_names": [ "Filippo Regina", "Mauro Gianfranco Bisceglia" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "169464105", "title": "Analisis Metode Capital Asset Pricing Model Dalam Upaya Pemilihan Portofolio Optimal Terhadap Investasi Saham(Studi pada Perusahaan yang Masuk dalam Perhitungan Indonesia Stock Exchange Periode 2016 2017)", "abstract": "The purpose of this study is to analyze the optimal portfolio selection on companies that listed in IDX30 when measured by Capital Asset Pricing Model method 2016 2017 period to investment decision making. The data used are secondary data in accordance with the companies of the sample listed on the IDX (Indonesia Stock Exchange) and Bank Indonesia. The research method used is descriptive method. The sampling technique used purposive sampling by taking samples of 15 companies. The results show that efficient stock companies are stocks that have an individual realization return rate greater than expected returns [Ri> E (Ri) or [Ri> E (Rj) During the period of research from 2016 2017 there were 10 stocks of efficient companies, while five other shares were included into inefficient companies. Stock prices that are included in the efficient stock group, will increase so that the return realization is high which is directly proportional to the value of beta. Thus, investors should invest in efficient stock groups.", "corpus_id": 169464105, "venue": "", "year": 2018, "author_names": [ "Julia Wahyu Ciptaningrum", "Mba Sri Padmantyo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "156594185", "title": "EVALUATING PORTFOLIO PERFORMANCE OF COMPANIES'STOCK LISTED IN LQ45 BASED ON SHARPE, TREYNOR AND JENSEN METHOD EVALUASI KINERJA PORTOFOLIO SAHAM PERUSAHAAN PADA LQ45 BERDASARKAN METODE SHARPE, TREYNOR DAN JENSEN", "abstract": "Capital market activity has an important role in developing the national economy, in order to enter the financial market, the investor needs to know about the risk in the capital market itself and determine the best stock to be taken. There are three common methods of analysis such as Sharpe ratio, Trenor ratio and Jensen's alpha which are sometimes confuse the investor in order to take which one of these three is the better method. This research objective is to identify whether there is a difference of portfolio performance among these three methods on LQ 45 by analyzing the performance of each sampling stock from LQ 45. This research was using Z score standardized to standardized these three method and after that used one way ANOVA to find whether there is any difference among these three methods or not. Conclusion this research showed no difference between any of these three methods. Any of this method can be used by the investor to analyze the ratio of portfolio performance. As a recommendation, using these three methods simultaneously can provide better information for manager as part of investment management process.", "corpus_id": 156594185, "venue": "", "year": 2015, "author_names": [ "Vernando A Zakarias", "Ferdinand J Tumewu" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "168115693", "title": "OPPORTUNITIES FOR DETERMINING THE EFFICIENCY CURVE IN THE PORTOFOLIO OF COMPANIES LISTED ON BUCHAREST STOCK EXCHANGE", "abstract": "This article is organized in four parts. The first part presents theoretical aspects on determining the efficiency curve and the steps to be taken on this. The second part begins with a case study presenting the methods of determining the efficiency curve of a stock portfolio, in the case of several entities listed on the Bucharest Stock Exchange. The third part shows how useful Microsoft Excel is to determine the Markovitz efficiency curve of a stock portfolio. On completion of this work, we present the findings on the methods of determining the Markovitz efficiency curve using Microsoft Excel, and their related interpretations.", "corpus_id": 168115693, "venue": "", "year": 2015, "author_names": [ "Hada Teodor", "Dumitrescu Daniela Ionela" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "169425389", "title": "Analisis Investasi Melalui Penetapan Portofolio Saham Optimal Pada Saham LQ 45 Bursa Efek Indonesia (The Analysis of Invesment by Determination Optimal Portofolio of LQ 45 at Indonesian Stock Exchange)", "abstract": "", "corpus_id": 169425389, "venue": "", "year": 2015, "author_names": [ "Ahmad Denny Firdausy" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "157129064", "title": "POST EARNING ANNOUNCEMENT DRIFT PADA PORTOFOLIO VALUE STOCK DAN GLAMOUR STOCK", "abstract": "Dalam pasar modal terdapat beberapa anomali pasar dan salah satunya adalah post earning announcement drift. Anomali ini terjadi karena adanya inefisiensi pasar yang menyebabkan terjadinya ketidakjelasan arah abnormal return pasca pengumuman laporan keuangan. Post earning announcement drift ini dapat dilihat dengan cara menghitung EAAR (earning announcement abnormal return) kemudian mengelompokkan saham kedalam 2 kelompok EAAR yaitu dan Tidak hanya itu, setelah selesai mengelompokkan saham kedalam kedua kelompok EAAR, maka setelah itu dilakukan perhitungan drift yang bertujuan untuk mengetahui tingkat post earning announcement drift pada masing masing kelompok saham. Kelompok saham yang digunakan dalam penelitian ini yaitu kelompok saham value stock dan glamour stock dimana keduanya merupakan dua kelompok saham yang menarik untuk diteliti. Tujuan penelitian ini adalah untuk mengetahui bagaimana perbedaan post earning announcement drift pada value stock dan glamour stock di Indonesia dengan jangka waktu penelitian dari tahun 2009 sampai dengan 2011. Metode yang digunakan dalam penelitian ini yaitu dengan menggunakan Uji Beda dengan menggunakan SPSS 21 dan sektor yang diteliti yaitu sektor manufaktur. Hasil yang diperoleh yaitu terdapat perbedaan post earning announcement drift pada value stock dan glamour stock", "corpus_id": 157129064, "venue": "", "year": 2014, "author_names": [ "Marcella Averica Mulya" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "108416144", "title": "PEMBENTUKAN PORTOFOLIO YANG EFISIEN PADA SAHAM PERUSAHAAN PROPERTI YANG TERCATAT PADA BURSA EFEK INDONESIA (FORMATION OF EFFICIENT PORTFOLIO IN STOCK COMPANY PROPERTY LISTED ON THE INDONESIAN STOCK EXCHANGE)", "abstract": "Pemilihan sekuritas dalam investasi dimaksudkan untuk mendapatkan keuntungan dan mengurangi kemungkinan risiko. Tujuan penelitian adalah untuk menganalisis tingkat keuntungan rata rata yang diharapkan dan kemungkinan risiko baik dari sekuritas maupun portofolio serta memberikan alternatif pemilihan portofolio efisien. Objek penelitian berupa sekuritas sektor properti saham PT Lika, PT Suma dan PT Cide. Variabel penelitian berupa tingkat keuntungan yang diharapkan serta tingkat risiko yang diterima oleh investor dari suatu pilihan investasi. Penelitian menggunakan data sekunder berupa saham properti yang terdaftar dalam Bursa Efek Indonesia, meliputi pergerakan harga saham bulanan, dari Januari 2009 sampai dengan Desember 2011. Alat analisis untuk menentukan portofolio yang efisien menggunakan metode Markowitz, dan berdasarkan masalah keuntungan yang diharapkan dari sekuritas dan Varians (2) atau suatu ukuran penyerapan dari penyebaran peluang. Berdasarkan hasil penelitian dapat diindikasikan bahwa bagi pencari risiko, portofolio paling efisien terdapat pada proporsi saham PT Lika 25% PT Suma 50% dan PT Cide 25% Portofolio tersebut menghasilkan penerimaan yang bisa diharapkan terbesar, yaitu 2,19% dan tingkat risiko 15,88% Sebaliknya bagi penghindar risiko, portofolio paling efisien adalah proporsi saham PT Lika 30% PT Suma 20% dan PT Cide 50% Portofolio tersebut mempunyai pengembalian yang bisa diharapkan sebesar 0.0210870 dan tingkat risiko terkecil 11,24%", "corpus_id": 108416144, "venue": "", "year": 2013, "author_names": [ "Komsi Koranti" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "152351380", "title": "Analisis Kinerja Portofolio Saham Subsektor Perkebunan Dengan Sharpe Measure, Treynor Measure, dan Jensen Measure (Stock Portfolio Performance Analysis in Estate Crop SubsectorUsing Sharpe Measure, Treynor Measure, and Jensen Measure)", "abstract": "Investors form a stock portfolio in order to gainreturns from several sources and distribute possible risks.Several methods are required when forming a stock portfolioto measure and evaluate portfolio performance. The currentresearch showed different results of the Sharpe Measure,Treynor Measure, and Jensen Measure when measuring stockportfolio performance in estate crop companies listed inIndonesia Stock Exchange. The data used in this researchwere stock data of PT Astra Agro Lestari Tbk. (AALI) PT PPLondon Sumatera Tbk. (LSIP) and PT Bakrie SumateraPlantation Tbk. (UNSP) data of stock composite index, andBank of Indonesia rate, taken from January 2006 to January2012. The Sharpe Measure result showed that best stockcombination came from portfolio of AALI and LSIP, while TheTreynor Measure and The Jensen Measure result showed thatthe best stock combination came from AALI and UNSP. Thedifference was caused by using of different risk variable in thecalculation of each measurement. This difference makesinvestors have chances to decide which method is suitable toinvestor perception of risk in forming portfolio. Keywords: portfolio, Sharpe, Treynor, Jensen.", "corpus_id": 152351380, "venue": "", "year": 2012, "author_names": [ "Artie Arditha Rachman", "Igo Febrianto" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229793622", "title": "ANALISIS KINERIA PORTOFOLIO ANTARA GROWTH STOCK DAN VALUE STOCKStudi Empiris pada Saham LQ45 di Bursa Efek Indonesia", "abstract": "", "corpus_id": 229793622, "venue": "", "year": 2013, "author_names": [ "Raden Andita Gunadarma", "Mba Eduardus Tandelilin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "219498835", "title": "PENILAIAN PORTOFOLIO OPTIMAL PADA SEKTOR PERBANKAN INDEKS LQ45", "abstract": "The purpose of this study is to assess which stocks are eligible for optimal portofolio formation and calculate the portion of funds for each stock forming the portofolio, and determine the optimal return of portofolio expectations with the risks faced by investors. This study uses a single index method. The population in this study were 44 banking sector companies that went public on the Indonesia Stock Exchange. The sample was selected by using purposive sampling technique in the banking sector stocks that entered consecutively into the LQ45 Index for the period January 2015 December 2019. The results of this study showed that out of 5 stocks sample, there were 3 stocks that were eligible for optimal portfolio, namely Bank Central Asia Tbk. (BBCA) with a proportion of funds 75.18% Bank Tabungan Negara (Persero) Tbk. (BBTN) with a proportion of funds of 17.08% and Bank Rakyat Indonesia (Persero) Tbk. (BBRI) with a proportion of funds of 7.74% With an optimal portfolio expected return of 0.39% and a risk that must be faced by 0.43%", "corpus_id": 219498835, "venue": "", "year": 2020, "author_names": [ "Nevia Fitriyani" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "91609858", "title": "Glutathione S transferases modulate Cu tolerance in Oryza sativa", "abstract": "Abstract Along with the widespread use of copper (Cu) based fungicides and fertilizers, Cu contaminated soil has been a major issue resulting in the loss of crop yield. To improve Cu tolerance in Oryza sativa, we previously carried out a screen of Cu sensitivity and obtained the Cu tolerant (B1139) and the Cu sensitive (B1195) rice varieties. Here, by analyzing an RNA Seq transcriptome profile of root tips, 20 glutathione S transferase (GST) genes were differently expressed between the Cu tolerant B1139 and the Cu sensitive B1195 when exposed to excess Cu2+ A more rapid decrease of root GST activity occurred in Cu treated B1195 than in Cu treated B1139, suggesting that different GST activity might affect Cu tolerance in rice. This is further supported by the observation of Cu hypersensitivity in rice seedlings deficient of the most abundant GST protein, OsGSTF2, demonstrating that GST proteins modulate Cu tolerance in rice. This, at least partially, leads to different Cu tolerance between B1139 and B1195. Furthermore, homologous modeling showed that a putative Cu2+ binding site, OsGSTF2H41 locates at the active center of GST enzyme. In vitro analysis demonstrated that Cu2+ interferes with the GST activity of OsGSTF2 protein, indicating that GST activity reduction by Cu2+ might be the binding of Cu2+ to the OsGSTF2H41 site. Consistently, amino acid replacement of histidine 41 with glycine (OsGSTF2H41G) resulted in decreased GST activity of OsGSTF2. Additionally, ectopic expression of OsGSTF2 enhances Cu tolerance in Escherichia coli, suggesting that the GST proteins might alleviate Cu toxicity by the binding of free Cu2+ in cells.", "corpus_id": 91609858, "venue": "", "year": 2018, "author_names": [ "Lu Li", "Meng Hou", "Lily Cao", "Yan Xia", "Zhenguo Shen", "Zhubing Hu" ], "n_citations": 43, "n_key_citations": 0, "score": 1 }, { "doc_id": "26506018", "title": "Distinct time courses of increase in cytochromes P450 1A2, 2A5 and glutathione S transferases during the progressive hepatitis associated with Helicobacter hepaticus.", "abstract": "Mice naturally infected by Helicobacter hepaticus develop a chronic active hepatitis leading to hepatocellular carcinoma. This mouse model of liver cancer was used to examine the impact of bacterial infection on the hepatic expression and activity of enzymes involved in carcinogen bioactivation (phase I enzymes) and detoxification (phase II enzymes) No major differences in total cytochrome P450 (CYP) content were found between control and infected mice during the course of the study. The most striking modulations of individual isoenzymes were the increases in immunohistochemical staining observed for CYP1A and CYP2A5 in relation to increasing age and liver lesions. The increase in CYP2A5 in mice aged over 12 months was confirmed by the observed increases in coumarin 7 hydroxylation (CYP2A5 substrate) in vitro and CYP2A5 mRNA levels by Northern blot analysis. Immunoblotting confirmed the specific induction of CYP1A2 in infected mice 12 and 18 months of age. Perfusion of liver with nitroblue tetrazolium, an indicator for superoxide formation, demonstrated that in livers of infected mice, hepatocytes often co expressed CYP2A5 and formazan deposition. Concerning phase II enzymes, an enhancement of glutathione S transferase (GST) activities, related to the disease process, was observed in infected mice. An age specific increase of GSTpi and A4.4 (early stage of disease) and GST YaYa >9 months) expression was also demonstrated by immunohistochemical staining. In contrast, catalase and glutathione peroxidase activities, as well as reduced glutathione content were decreased in the early stages of disease (3 9 months) in infected mice compared to age matched control mice. Overall, these results suggest that alterations in CYP and GST expression may contribute to the aetiology of tumour incidence due to H. hepaticus infection via production of reactive oxygen species.", "corpus_id": 26506018, "venue": "Carcinogenesis", "year": 1997, "author_names": [ "Pascale Chomarat", "Marek Sipowicz", "Bhalchandra A Diwan", "Laura W Fornwald", "Yogesh C Awasthi", "Miriam Anver", "Jerry M Rice", "Lucy M Anderson", "Christopher Paul Wild" ], "n_citations": 41, "n_key_citations": 0, "score": 0 }, { "doc_id": "85388494", "title": "Characterization of two cDNAs encoding glutathione S transferases in rice and induction of their transcripts by the herbicide safener fenclorim", "abstract": "The safener fenclorim (4,6 dichloro 2 phenyl pyrimidine) induces glutathione S transferases (GSTs; EC 2.5.18) in rice (Oryza sativa L. cv. Lemont) including those with activity toward pretilachlor [2 chloro 2',6' diethyl N (2 propoxyethyl)acetamide] and this is associated with increased tolerance to this herbicide. In this study, we report on the isolation and characterization of two partial cDNA clones encoding GSTs in rice. The two cDNA clones were isolated by using GST specific degenerate primers and the RT PCR (reverse transcriptase polymerase chain reaction) technique from control (unsafened) and fenclorim treated (safened) rice roots, respectively. Sequence analyses demonstrated that the two cDNAs share 60% amino acid sequence identity and 62% nucleotide sequence identity, appearing to represent two different rice GSTs (RGST I and II) Southern blot analysis with the two clones confirmed the presence of at least three GST genes in the rice genome. Northern blotting with the two clones as probes showed that the GST gene(s) are constitutively expressed in roots of unsafened rice seedlings. Treatment with the safener fenclorim induced the expression of the rice GST gene(s) The fenclorim mediated induction of mRNA expression coincided with a concomitant induction of total GST activity toward pretilachlor in roots of fenclorim safened rice. Phylogenetic analysis based on the amino acid sequence alignment of the two rice cDNAs with sequences of other plant GSTs showed that RGST I seems to be more closely related to wheat GSTs, while RGST II is more closely related to the maize GST I and IV isozymes.", "corpus_id": 85388494, "venue": "", "year": 1999, "author_names": [ "Jingrui Wu", "Carole L Cramer", "Kriton K Hatzios" ], "n_citations": 29, "n_key_citations": 2, "score": 0 }, { "doc_id": "230108023", "title": "Effects of conserved Arg20, Glu74 and Asp77 on the structure and function of a tau class glutathione S transferase in rice.", "abstract": "KEY MESSAGE The relative position of domains is critical for enzymatic properties of tau class glutathione S transferases, and altering the position of linker far away from the active center affects catalytic property. Glutathione S transferases (GSTs) are a family of phase II detoxification enzymes whose main function is to improve plant resistance to stresses. To understand the structural effects of tau class GSTs on their function, using OsGSTU17 as an example, we predicted the residues involved in the interactions between its domains and linker region. We further detected the structural changes in mutants and the corresponding changes in terms of substrate activity and kinetic parameters. Four pairs of residues, including Ala14 and Trp165, Arg20 and Tyr154, Glu74 and Arg98, Asp77 and Met87, forming hydrogen bonds and salt bridges were found to play important roles in maintaining the relative position between the domains and linker region inside the protein. The hydrogen bond between Trp165 and Ala14 affected the structural stability has been demonstrated in our previous study. The mutant R20A lost almost all catalytic activity. Interestingly, the mutant E74A exhibited a significant decrease in activity towards 7 chloro 4 nitrobenzo 2 oxa 1, 3 diazole, 1 chloro 2, 4 dinitrobenzene and 4 nitrobenzyl chloride, while its activity towards substrate cumene hydroperoxide remained unchanged. Compared with other mutants, the mutant D77A exhibited decreased affinity to its substrates and increased activity towards 1 chloro 2, 4 dinitrobenzene and cumene hydroperoxide, but its thermodynamic stability did not change significantly. The relative position of individual domain was critical for enzymatic properties, and the linker which is far away from the active site could change the enzymatic properties of GSTs via altering the relative position of the individual domain. Our results provide insights into the relationship between structure and function of tau class GSTs.", "corpus_id": 230108023, "venue": "Plant molecular biology", "year": 2021, "author_names": [ "Xue Yang", "Zhi-hai Wu", "Jie Gao" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "84094405", "title": "Characterization and Safener Induction of Multiple Glutathione S Transferases in Three Genetic Lines of Rice", "abstract": "Abstract Multiple glutathione S transferase (GST; EC 2.5.1.18) activity peaks were characterized by fast protein liquid chromatography (FPLC) in three genetic lines of rice (Oryza sativa L. Root applied pretilachlor (0.15 mM) inhibited root growth of 5 day old etiolated seedlings by 67% in Teqing (indica type) 54% in Koshihikari (japonica type) and 34% in Lemont (indica x japonica type) The safener fenclorim (1 mM) prevented the injury caused by pretilachlor in all genotypes. GST activity from 5 day old untreated or fenclorim treated seedlings of the three genetic lines was assayed using 1 chloro 2,4 dinitrobenzene (CDNB) radiolabeled pretilachlor, and radiolabeled fenclorim as substrates. GST activity with each substrate was greater in roots than in shoots of the three genotypes. Treatment with fenclorim increased GST activity in roots and shoots by 20 to 90% GST activity in all genotypes was greater with CDNB, followed by pretilachlor, and then fenclorim. GST(CDNB) and GST(pretilachlor) activities were greater in Lemont, followed by Koshihikari, and then Teqing. In contrast, GST(fenclorim) activity was greater in Koshihikari and least in Lemont. FPLC elution patterns (MonoQ column) of partially purified GST extracts from untreated and fenclorim treated seedlings of the three rice genotypes revealed the presence of multiple GST activities. Teqing shoots had six GST activity peaks with fenclorim. Four of them were also active with CDNB and pretilachlor. Koshihikari shoots had six GST activity peaks with pretilachlor. Five of them were also active with fenclorim, but only three were active with CDNB. Lemont shoots exhibited three GST activity peaks with fenclorim, five with CDNB, and seven with pretilachlor. Multiple GST activity peaks using CDNB and pretilachlor as substrates were also present in the roots of Teqing, Koshihikari, and Lemont seedlings. Fenclorim increased the activity of GST peaks conjugating pretilachlor and CDNB more than those active with fenclorim. Induction of GST peaks was more evident in Lemont, followed by Koshihikari, and then Teqing. The differential patterns of GST peaks active toward pretilachlor show that rice japonica lines may be more tolerant to pretilachlor than indica lines.", "corpus_id": 84094405, "venue": "", "year": 2002, "author_names": [ "Fan Deng", "Kriton K Hatzios" ], "n_citations": 42, "n_key_citations": 0, "score": 1 }, { "doc_id": "85017306", "title": "Characterization of glutathione S transferase of the rice leaffolder moth, Cnaphalocrocis medinalis (Lepidoptera: Pyralidae) Comparison of its properties of glutathione S transferases from other lepidopteran insects", "abstract": "Abstract An enzyme that possesses the glutathione S transferase (GST) activity was found in the rice leaffolder moth, Cnaphalocrocis medinalis. The enzyme was purified to homogeneity for the first time by ammonium sulfate fractionation and affinity chromatography. The resultant enzyme revealed a single band with a molecular mass of 24 kDa by SDS polyacrylamide gel electrophoresis under reduced conditions. When assayed with 1 chloro 2,4 dinitrobenzene, a universal substrate for GST, the purified GST had an optimum pH at 8.0, and was fairly stable at pH 3 10 and at temperatures below 50 degC. The enzyme was also able to conjugate glutathione to 4 hydroxynonenal, a cytotoxic lipid peroxidation product. The present GST was inhibited by fenitrothion, permethrin, and deltamethrin, suggesting that the GST could be involved in metabolizing these organophosphorus and pyrethroid insecticides.", "corpus_id": 85017306, "venue": "", "year": 2008, "author_names": [ "Kohji Yamamoto", "Satoshi Teshiba", "Yoichi Aso" ], "n_citations": 8, "n_key_citations": 1, "score": 0 }, { "doc_id": "54549452", "title": "Rice (Oryza sativa L. tau class glutathione S transferase (OsGSTU30) overexpression in Arabidopsis thaliana modulates a regulatory network leading to heavy metal and drought stress tolerance.", "abstract": "Glutathione S transferases (GSTs) are well known enzymes due to their role in detoxification of xenobiotic compounds. However, their biochemical action is still not so clear in imparting tolerance to several abiotic stresses in crop plants. In our previous study, we observed that rice tau class OsGSTU30 plays a significant role in the detoxification of Cr(vi) Interestingly, q RT PCR analysis also revealed higher expression of OsGSTU30 under drought conditions. In this study, we characterize OsGSTU30 in response to drought as well as heavy metal [Cr(vi) stresses through overexpression in Arabidopsis thaliana. Biochemical and physiological analyses revealed that OsGSTU30 overexpression lines have improved tolerance against both stresses as compared to wild type plants. Kinetic analysis and molecular docking confirmed that OsGSTU30 enzyme possesses both GST as well as glutathione peroxidase (GPx) like activity. Differentially expressed stress responsive genes were also identified by transcriptome analysis, involved in different biological pathways during abiotic stresses. These results suggest the signaling functions of OsGSTU30 apart from its catalytic activity during abiotic stress responses and can be further exploited for improving the stress tolerance in crops.", "corpus_id": 54549452, "venue": "Metallomics integrated biometal science", "year": 2019, "author_names": [ "Dipali Srivastava", "Giti Verma", "Abhishek Singh Chauhan", "Veena Pande", "Debasis Chakrabarty" ], "n_citations": 21, "n_key_citations": 0, "score": 0 }, { "doc_id": "73442099", "title": "Increasing tolerance to bispyribac sodium is able to allow glutathione homeostasis to recover in indica rice compared with japonica rice.", "abstract": "The high activity and broad weed spectrum of BS has made it widely used in China. However, accidental crop injuries, particularly occurring in Jiangsu, Hunan, Hubei and Heilongjiang provinces in recent years, have resulted in limiting the application of BS in China. In this study, glutathione homeostasis was measured in the contrasting sensitivity of indica and japonica rice cultivar after bispyribac sodium (BS) treatment. The results showed that japonica rice cultivar Nanjing 9108 was more sensitive to BS than indica rice Nanjing 11 and indica hybrid cultivar Guangliangyou 6326. In response to the exposure of BS in all rice cultivars, especially Nanjing 9108, the perturbation of glutathione homeostasis occurred, including the decreased reduced glutathione (GSH) and increased oxidized glutathione (GSSG) These results were supported by increased activities of glutathione S transferases (GSTs) in Nanjing 11 and Guangliangyou 6326. Further tests revealed that when Nanjing 11 was pretreated with the glutathione depleting agents L buthionine sulfoximine (BSO) or diethylmaleate (DEM) the GSH levels, the activity of GSTs, and the gene expression levels of GR and GSTs decreased, finally increasing the phytotoxicity of BS. The aforementioned DEM inhibitory responses were further rescued by exogenously applied GSH. In contrast, the pretreatment of glutathione or N acetyl L cysteine (NAC) not only increased the contents of GSH, the activities of GSTs, and the expression level of GR and GSTs gene, but also alleviated BS phytotoxicity in Nanjing 9108. In both cultivars, DEM increased phytotoxicity and GSH partially reversed this. This study suggests that increasing tolerance to BS was able to allow glutathione homeostasis to recover in indica rice cultivar compared with japonica rice cultivar.", "corpus_id": 73442099, "venue": "Pesticide biochemistry and physiology", "year": 2019, "author_names": [ "Hongchun Wang", "Zhijie Guo", "Wenbiao Shen", "Yuanlai Lou" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "24707788", "title": "Plasma B esterase and glutathione S transferase activity in the toad Chaunus schneideri (Amphibia, Anura) inhabiting rice agroecosystems of Argentina", "abstract": "B esterase (BChE: butyrylcholinesterase and CbE: carboxylesterase) and glutathione S transferase (GST) activity were measured in the plasma of Chaunus schneideri collected in rice fields and surrounding environments and in a reference pristine forest. The chemical criterion based on in vitro reactivation of BChE activity using pyridine 2 aldoxime methochloride (2 PAM) was also determined. Mean values of plasma BchE, CbE, and GST activity for samples from agricultural areas were different from those for samples from pristine forest. Plasma samples from the two agricultural areas showed positive reactivation of BChE activity after incubation with 2 PAM. Based on our experimental evidence we suggest B esterases and gluthatione S transferases can be used in field monitoring as biomarkers of exposure of wildlife to pesticides, because the analysis in non destructive and is sensitive to anti ChE agrochemicals. Chemical reactivation of BChE is also a complementary method for assessing the effects of pesticides on toads inhabiting rice fields. Further studies are urgently needed to investigate adverse effects of massive exposure to pesticides experienced by native populations of anurans.", "corpus_id": 24707788, "venue": "Ecotoxicology", "year": 2007, "author_names": [ "Andres M Attademo", "Paola Mariela Peltzer", "Rafael Carlos Lajmanovich", "Mariana C Cabagna", "Gabriela S Fiorenza" ], "n_citations": 36, "n_key_citations": 2, "score": 0 }, { "doc_id": "87538589", "title": "Purification and Characterization of Glutathione S Transferases of Eoreuma loftini and Diatraea saccharalis (Lepidoptera: Pyralidae)", "abstract": "Clutathione S transferases (CST) from larvae of the sugarcane borer, Diatraea Saccharalis (F. and the Mexican rice borer, Eareuma laftini (Dyar) were characterized. Apparently homogeneous CST isoenzymes from the larvae of both species were purified with CSH affinity chromatography and isoelectric focusing. E. laftini had higher CST activity (31.12 units/g wet weight of tissue) compared with D. saccharalis (24.8 units/g wet weight of tissue) The CST isoenzyme of D. saccharalis with a pi value of 9.3 was a dimer of two identical subunits M 25,000) whereas the CST isoenzyme with a pi value of 8.0 was a heterodimer with subunit M, values of 25,000 and 27,000. The CST isoenzymes of E. laftini with pI values of 9.7 and 7.7 were homo dimers of subunits with M, values of 25,000 and 26,000, respectively. However, the CST isoenzyme with a pI value of 5.3 was a heterodimer of subunits having M, values of 26,000 and 27,000. Peptide fingerprint analysis by SV 8 protease digestion revealed primary structural differences in these isoenzymes. The N termini of all CST isoenzymes from both the species of larvae were blocked. Substrate specificities and kinetic properties of the purified CSTs from both the species have been described. The low Km and high V max values toward l chloro 2,4 dinitrobenzene of CST enzymes isolated from both D. saccharalis and E. laftini indicate that these enzymes have a high affinity for electrophilic substrates compared with most human CSTs.", "corpus_id": 87538589, "venue": "", "year": 1991, "author_names": [ "Narendra Kumar Tiwari", "Sharad S Singhal", "Rajendra K Sharma", "Robert L Meagher", "Yogesh C Awasthi" ], "n_citations": 7, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "22910302", "title": "Bayesian randomized response technique with multiple sensitive attributes: The case of information systems resource misuse", "abstract": "The randomized response technique (RRT) is a classical and effective method used to mitigate the distortion arising from dishonest answers. The traditional RRT usually focuses on the case of a single sensitive attribute, and discussion of the case of multiple sensitive attributes is limited. Here, we study a business case to identify some individual and organizational determinants driving information systems (IS) resource misuse in the workplace. People who actually engage in IS resource misuse are probably not willing to provide honest answers, given the sensitivity of the topic. Yet, to develop the causal relationship between IS resource misuse and its determinants, a version of the RRT for multivariate analysis is required. To implement the RRT with multiple sensitive attributes, we propose a Bayesian approach for estimating covariance matrices with incomplete information (resulting from the randomization procedure in the RRT case) The proposed approach (i) accommodates the positive definite condition and other intrinsic parameter constraints in the posterior to improve statistical precision, (ii) incorporates Bayesian shrinkage estimation for covariance matrices despite incomplete information, and (iii) adopts a quasi likelihood method to achieve Bayesian semiparametric inference for enhancing flexibility. We show the effectiveness of the proposed method in a simulation study. We also apply the Bayesian RRT method and structural equation modeling to identify the causal relationship between IS resource misuse and its determinants.", "corpus_id": 22910302, "venue": "", "year": 2018, "author_names": [ "Ray S W Chung", "Amanda M Y Chu", "Mike K P So" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "51994831", "title": "Bayesian Randomized Response Technique", "abstract": "When sensitive attributes are investigated, Randomized Response Technique (RRT) is a popular approach to reduce the bias arisen from untruthful response. Nonetheless, traditional RRT has weakness that it mainly focuses on estimating the moments of univariate random variables but not dependence among multiple random variables. This paper is to introduce a new method to estimate the covariance matrix of random vectors under the framework of RRT. Modified Cholesky decomposition is applied to reparameterize the covariance matrix so that the parameters of the covariance matrix can be expressed as regression on a row by row basis. This simplifies the structure of the matrix and ensures the positive definiteness of the estimator. To keep inference nonparametric, moment equations of the randomized realizations are adopted as the quasi likelihood. Moreover, Bayesian lasso is applied to impose shrinkage effect in estimation. This helps reduce estimation error when the covariance matrix is sparse. An easy to implement Gibbs sampling scheme is proposed for the inference. A simulation study is conducted to evaluate the accuracy of estimation. An empirical study related to software piracy behavior is conducted to compare the difference of the estimates under randomized and non randomized settings.", "corpus_id": 51994831, "venue": "", "year": 2012, "author_names": [ "Ray S W Chung" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "123591533", "title": "Bayesian Randomized Response as a Class Project", "abstract": "This article describes multiple learning opportunities stemming from a classroom project about psychological therapy analyzed through the Bayesian framework. Because the dataset is rather small, students focus naturally on prior elicitation, issues of identifiability and sensitivity analysis. In addition, because there is not a familiar closed form solution, students are forced to apply relevant simulation techniques, including rejection sampling, Metropolis Hastings algorithm, data augmentation, simulation of Bayes factors, and other model selection criteria. Comparison with surprising frequentist results prompts a reflection of the pros and cons of either approach. Key features for project success (writing skills, feedback) are discussed.", "corpus_id": 123591533, "venue": "", "year": 2004, "author_names": [ "Michele DiPietro" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "221201477", "title": "Anti Thrombotic Therapy to Ameliorate Complications of COVID 19 (ATTACC) Study design and methodology for an international, adaptive Bayesian randomized controlled trial", "abstract": "Background: Mortality from COVID 19 is high among hospitalized patients and effective therapeutics are lacking. Hypercoagulability, thrombosis and hyperinflammation occur in COVID 19 and may contribute to severe complications. Therapeutic anticoagulation may improve clinical outcomes through anti thrombotic, anti inflammatory and anti viral mechanisms. Our primary objective is to evaluate whether therapeutic dose anticoagulation with low molecular weight heparin or unfractionated heparin prevents mechanical ventilation and/or death in patients hospitalized with COVID 19 compared to usual care. Methods: An international, open label, adaptive randomized controlled trial. Using a Bayesian framework, the trial will declare results as soon as pre specified posterior probabilities for superiority, futility, or harm are reached. The trial uses response adaptive randomization to maximize the probability that patients will receive the more beneficial treatment approach, as treatment effect information accumulates within the trial. By leveraging a common data safety monitoring board and pooling data with a second similar international Bayesian adaptive trial (REMAP COVID anticoagulation domain) treatment efficacy and safety will be evaluated as efficiently as possible. The primary outcome is an ordinal endpoint with three possible outcomes based on the worst status of each patient through day 30: no requirement for invasive mechanical ventilation, invasive mechanical ventilation or death. Conclusion: Using an adaptive trial design, the Anti Thrombotic Therapy To Ameliorate Complications of COVID 19 trial will establish whether therapeutic anticoagulation can reduce mortality and/or avoid the need for mechanical ventilation in patients hospitalized with COVID 19. Leveraging existing networks to recruit sites will increase enrollment and mitigate enrollment risk in sites with declining COVID 19 cases.", "corpus_id": 221201477, "venue": "Clinical trials", "year": 2020, "author_names": [ "Brett L Houston", "Patrick R Lawler", "Ewan C Goligher", "Michael E Farkouh", "Charlotte A Bradbury", "Marc Carrier", "Vladimir Dzavik", "Dean A Fergusson", "R A Fowler", "Jean Philippe Galanaud", "Peter L Gross", "Emily G McDonald", "Mansoor Husain", "Susan R Kahn", "Anand Kumar", "John K Marshall", "Srinivas Murthy", "Arthur S Slutsky", "Alexis Fournier Turgeon", "Scott M Berry", "Robert S Rosenson", "Jorge Escobedo", "Jose Carlos Nicolau", "Lindsay Bond", "Bridget-Anne Kirwan", "Sophie de Brouwer", "Ryan Zarychanski" ], "n_citations": 16, "n_key_citations": 0, "score": 1 }, { "doc_id": "85547945", "title": "On Bayesian Analysis of a General Class of Randomized Response Models In Social Surveys about Stigmatized Traits", "abstract": "While conducting a social survey on stigmatized/sensitive traits, obtaining efficient (truthful) data is an intricate issue and estimates are generally biased in such surveys. To obtain trustworthy data and to reduce false response bias, a technique, known as randomized response technique, is now being used in many surveys. In this study, we performed a Bayesian analysis of a general class of randomized response models. Suitable simple Beta prior and mixture of Beta priors are used in a common prior structure to obtain the Bayes estimates for the proportion of a stigmatized/sensitive attributes in the population of interest. We also extended our proposal to stratified random sampling. The Bayes and the maximum likelihood estimators are compared. For further understanding of variability, we have also compared the prior and posterior distributions for different values of the design constants through graphs and credible intervals. The condition to develop a new randomized response model is also discussed.", "corpus_id": 85547945, "venue": "", "year": 2021, "author_names": [ "Zawar Hussain", "Muhammad Abid", "Nasir Abbas" ], "n_citations": 2, "n_key_citations": 0, "score": 2 }, { "doc_id": "116150250", "title": "Bayesian Analysis of Kim and Warde Randomized Response Technique Using Alternative Priors", "abstract": "In this paper, we developed the Bayesian estimators of the population proportion of a stigmatized attribute using Kumaraswamy and Generalised Beta prior distributions when data were obtained through the Randomized Response Technique (RRT) proposed by Kim and Warde (15) We validated our newly developed Bayesian estimators for a wide range of the designed values of the population proportion at varying sample sizes. It was observed that our newly developed Bayesian estimators performed significantly better than the Bayesian estimator developed by Hussain and Shabbir (12) for relatively small as well as moderate sample sizes. However, the reverse was the case for very large sample sizes.", "corpus_id": 116150250, "venue": "", "year": 2014, "author_names": [ "Akinola Oladiran Adepetun", "Adedayo Amos Adewara" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "54947534", "title": "BAYESIAN ESTIMATION OF POPULATION PROPORTION IN KIM AND WARDE MIXED RANDOMIZED RESPONSE TECHNIQUE", "abstract": "In this study, we have developed the Bayesian estimator of the population proportion of a sensitive characteristic when data are obtained through the Randomized Response Technique (RRT) proposed by Kim and Warde (2005) Superiority of the Bayesian estimators is established for a wide range of the values of the population proportion using simple Beta prior information. It is observed that Bayesian estimators are better than the usual Maximum Likelihood Estimator (MLE) for small as well as moderate samples. The Proposed estimator is also compared with the Warner (1965) Kim and warde (2005) and Kim et al. (2006) estimators.", "corpus_id": 54947534, "venue": "", "year": 2012, "author_names": [ "Zawar Hussain", "Javid Shabbir" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "121324265", "title": "Bayesian Analysis of Randomized Response Sum Score Variables", "abstract": "The randomized response (RR) technique is an effective survey method when collecting sensitive information. In this technique, a probability mechanism using randomization devices is commonly involved in answering to sensitive questions. In order to evaluate the survey at the most accurate extend, self protection (SP) is introduced to describe the responses by participants who give the evasive answer without taking the result of the randomization device into account. In this study, we propose a Bayesian approach to modeling RR sum score variables under SP assumption. RR data from a Dutch survey on non compliance with social security regulation in 2004 is used to demonstrate the proposed models.", "corpus_id": 121324265, "venue": "", "year": 2012, "author_names": [ "Joon Jin Song", "Jong-Min Kim" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "122878448", "title": "Bayesian estimation of proportion and sensitivity level in randomized response procedures", "abstract": "A Bayesian approach to the joint estimation of population proportion and sensitivity level of a stigmatizing attribute is proposed by adopting a two stage randomized response procedure. In the first stage the direct question method is carried out for each respondent, while in the second stage the randomization is exclusively carried out for those individuals declaring their membership in the non sensitive group. The randomization is implemented on the basis of Franklin's procedure. The proposed Bayesian method avoids the drawbacks usually connected with the use of maximum likelihood or moment estimation.", "corpus_id": 122878448, "venue": "", "year": 2010, "author_names": [ "Lucio Barabesi", "Marzia Marcheselli" ], "n_citations": 18, "n_key_citations": 2, "score": 1 }, { "doc_id": "120753527", "title": "Bayesian Estimation Using Warner's Randomized Response Model through Simple and Mixture Prior Distributions", "abstract": "Bayesian estimation of population proportion of a sensitive characteristic is proposed by adopting a simple beta distribution and a mixture of Beta distributions as quantification of prior information using simple random sampling with replacement. In the sequel application of the stratified random sampling is also studied in Bayesian scenario. It is assumed that data are collected through Warner (1965) randomized response technique. To study the performance of Bayesian estimators we have used Mean Squared Error (MSE) and/or Relative Efficiency (RE) as performance criterion. Further, comparison of the suggested estimator is made with Kim et al. (2006) stratified estimator and usual maximum likelihood estimator in case of stratified random sampling. It is observed that unlike the moment and maximum likelihood methods, proposed Bayesian estimation method is free of the problems of having an estimate of population proportion outside the interval (0, 1) and large variance when the sample proportion of yes responses is very low or very high.", "corpus_id": 120753527, "venue": "", "year": 2010, "author_names": [ "Zawar Hussain", "Javid Shabbir", "Muhammad Riaz" ], "n_citations": 15, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "224804948", "title": "Application Prospect of Blockchain in Renewable Energy Certificates", "abstract": "Disadvantages like cumbersome verification and data centralization are involved in the application and transaction process of Renewable Energy Certificates in China. We realize that blockchain technology has been successfully applied in many fields with its features of decentralization, immutability, and traceability. As a result, we in this article aim to introduce blockchain into the current Renewable Energy Certificates trading system to solve the above problems. Firstly, this article gives an overview of blockchain technology, including its architecture and technical advantages. Secondly, it describes China's Renewable Energy Certificates transaction process and analyzes the potential challenges faced by it. Finally, it proposes a Renewable Energy Certificates trading system based on blockchain technology and analyzes its operation mode, advantages, and potential problems.", "corpus_id": 224804948, "venue": "CSAE", "year": 2020, "author_names": [ "Shengnan Zhang", "Jiaxing Xuan", "Zitong Lyu", "Yuchen Fu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "227282804", "title": "A Blockchain based Renewable Energy Investment Management Platform: Decentralized Sustainable Development (DeSDev)", "abstract": "In this study, a novel blockchain based platform for renewable energy investment is proposed. The blockchain technology has been shown to be a reliable way to send financial transactions across the world in a decentralized manner, at a fraction of the cost and with a faster transaction time. The proposed platform is capable of handling an equity sharing investment program for solar PV projects. The platform distributes the electricity generation income by sending it over a blockchain. The Ethereum blockchain is used to create a prototype, which is a smart contract. The prototype is tested with a solar PV electricity generation data. The result shows that the proposed platform can handle the expected transactions without an error. The overall performance of the proposed platform is tested by comparing its temporal duration and its financial costs with centralized solutions. Therefore, the proposed platform provides all the benefits mentioned at a much cheaper cost.", "corpus_id": 227282804, "venue": "", "year": 2020, "author_names": [ "Warodom Werapun", "Tanwa Arpornthip", "Esther Sangiamkul", "Rattana Wetprasit", "Tanakorn Karode" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229375569", "title": "Seal bid renewable energy certification trading in power system using blockchain technology", "abstract": "As the problems of existing fossil fuels are raised, the importance of renewable energy as a substitute energy is getting more emphasized. In order to solve this problem, various attempts have been made to expand the penetration rate of renewable energy based on various monetary support polices under government initiative. Therefore, we analyze the renewable energy certificate, which is a compensation system for renewable energy generation facility, and discuss the rational decision of consumers based on the mathematical perspective. In addition, based on the combination of the second price seal bid auction and the blockchain technology, the overall system was developed so that the transactions between the market participants could be rationalized and the superior it of the performance was verified by comparing with the existing technology.", "corpus_id": 229375569, "venue": "2020 International Conference on Information and Communication Technology Convergence (ICTC)", "year": 2020, "author_names": [ "Jangkyum Kim", "Hyunseo Park", "Gyeong Ho Lee", "Jun Kyun Choi", "Young-Hwan Heo" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "212762288", "title": "Blockchain based crowdfinancing mechanisms for renewable energy projects: A business case for consultancy a engineering firms", "abstract": "Recently, there is a growing need to address the investment gap in renewable energy by attracting non institutional investors that have investment preferences better suited for the energy transition. Crowdfinancing is a promising alternative, as it allows for increased innovation, more sustainable development and reduced community risks and is driven by a crowd of small investors that are less profit driven than professional investors. However, current crowdfinancing models are limited by lack of trust, adverse selection, exclusive corporate governance and lack of liquidity. While extant research has identified these limitations and the potential of blockchain technology to solve some of them, there is a need to design the blockchain based crowdfinancing mechanisms required and provide a business case for their implementation. The research objective of this practice oriented design research is to provide a practical plan for the implementation of blockchain based crowdfinancing for renewable energy projects by means of a design and business case for engineering and consultancy firms as the facilitators of the process in the Netherlands, with the purpose to give a boost to the energy transition. A foundation for the research was provided by making an analysis of the evolution and current state of the Dutch energy market organization based on three cornerstones: market roles, production and financing. This analysis showed a high degree of decentralization in terms of market roles and production from renewables that allowed the emergence of community driven energy cooperatives, while a dependence on centralized financial intermediaries is still present; risky and small projects do not have access to bank financing and existing crowdfinancing platforms charge high brokerage fees and provide no secondary markets. A pilot study based on the same cornerstones and consisting of interviews with relevant market parties was performed in order to supplement the analysis of the market for the formulation of design requirements for the crowdfinancing mechanisms. Qualitative desk research was done on existing smart contract applications that could be utilized to overcome the limitations of crowdfinancing and served as the building blocks for the conceptual designs. Qualitative desk research was also performed in order to quantify the costs and address the (legal) implications of implementing the mechanisms proposed. The result was a practical plan consisting of blockchain based crowdfinancing mechanisms that reduce brokerage fees and facilitate the organic establishment of secondary markets by making use of existing public blockchain infrastructure, and a positive business case for consultancy and 10 engineering firms to facilitate the process. Smart contracts govern the crowdfinancing process autonomously for low and high risk projects, where with the latter crowdinvestors are given financial control by locking project funds in trustless escrow contracts, thereby allowing them to cut losses in failing projects and thus addressing the issues of lack of trust and exclusive corporate governance, while mitigating the effects of adverse selection. This practical plan provides a tool to further empower the crowd as the fuel for the energy transition, thereby increasing investments in renewables. However, social exclusion might result at first from the intrinsic complexity of blockchain technology and the degree to which a boost can be given to the transition remains unclear due to a lack of consensus on the effectiveness of crowdfinancing to increase support for the bigger projects. There is further research needed into a risk management based approach for the design of escrow contracts that release funds according to a project planning, while the delegation of control rights to more capable third parties also requires more research. Additionally, the application of decentralized governance beyond financial control requires further examination as well.", "corpus_id": 212762288, "venue": "", "year": 2020, "author_names": [ "Janko Lopez Canizares" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "228094757", "title": "Two Novel Blockchain Based Market Settlement Mechanisms Embedded Into Smart Contracts for Securely Trading Renewable Energy", "abstract": "The progress of ICT technologies, day ahead forecast, home energy management systems, implementation of smart meters, and Distributed Energy Sources (DER) enables new business opportunities for prosumers to locally trade the surplus via blockchain platforms leading to considerable advantages at the community level. The current research handles settlement similar to a centralized market that it is not necessarily the best solution for blockchain. Nonetheless, the settlement is essential as sellers and buyers perceive the attractiveness of the local trading through the market results. In this paper, we propose two novel and efficient settlement mechanisms (Global Balancing Settlement GBS and Splitting Settlement SS) for Peer to Peer (P2P) electricity exchange enhancing the performance of the classic Pairwise Settlement PS. These will be written as stored procedures embedded into the smart contracts along with auctioning procedures. The simulations are performed using a small residential community with 30% of the electricity that can be locally traded to lower the bills and unstress the public grid. The performance of the two proposed settlement methods is proved by the 14 scenarios that thoroughly indicate that GBS and SS provide better results for both sellers and buyers than PS. In the reference scenario, with GBS, sellers have the highest encashments with almost 4% more, whereas buyers encounter the lowest payments with almost 5% less than in case of the classic settlement. Starting from reference scenario, alternative scenarios are envisioned to extend the analyses and assess the performance of the settlement mechanisms. The highest gain is recorded with GBS mechanism: almost 8.8% for sellers and 6.5% for buyers. Another interesting outcome is that GBS is providing better results than SS. When deviations are small, SS provides almost 6% gain for both sellers and buyers, but when they increase, the gain is exceedingly small or none.", "corpus_id": 228094757, "venue": "IEEE Access", "year": 2020, "author_names": [ "Simona Vasilica Oprea", "Adela Bara", "Anca Ioana Andreescu" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "219327014", "title": "A Blockchain based Privacy friendly Renewable Energy Community", "abstract": "", "corpus_id": 219327014, "venue": "SMARTGREENS", "year": 2020, "author_names": [ "Stephan Cejka", "Franz Zeilinger", "Argjenta Veseli", "Marie Holzleitner", "Mark Stefan" ], "n_citations": 1, "n_key_citations": 1, "score": 1 }, { "doc_id": "215791778", "title": "Modeling of Smart Contracts in Blockchain Solution for Renewable Energy Grid", "abstract": "The paper presents the manner of smart contracts' modeling in blockchain solution. The authors illustrate the modeling approach using the example of a renewable energy system. The paper proposes extension of Unified Modeling Language (UML) in form of UML Profile for Smart Contracts, appropriate for smart contract design. Moreover, the standard smart contract design and implementation method, in Corda environment, has been made more flexible. The authors present static aspect of newly designed Smart Contract Design Pattern.", "corpus_id": 215791778, "venue": "EUROCAST", "year": 2019, "author_names": [ "Tomasz Gorski", "Jakub Bednarski" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "208630511", "title": "Blockchain application in renewable energy microgrids: an overview of existing technology towards creating climate resilient and energy independent communities", "abstract": "Citizens and stakeholders are increasingly associating in so called renewable energy communities and are participating in the energy transition by investing in, producing, selling and distributing renewable energy. Such communities usually use photovoltaic systems on the rooftops of public and private buildings that are connected to a microgrid. Those energy system models represent an electrical network that is decentralized in which energy consumers also become producers (prosumers) and management of the grid is done by users. Optimization and trading of surplus energy produced in microgrids could be done via blockchain technology. On one hand, those innovations could offer a solution for adaptation and mitigation of climate change, and on the other hand include economic development, creation of new jobs, cheaper energy, and energy security. The present paper gives an overview of existing technology and its usage on cases in the world but is focusing on implementation in the EU and Croatian markets.", "corpus_id": 208630511, "venue": "2019 16th International Conference on the European Energy Market (EEM)", "year": 2019, "author_names": [ "Erica Svetec", "Lucija Nad", "Robert Pasicko", "Boris Pavlin" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "203655995", "title": "A Secure and Efficient Renewable Energy Trading Scheme Based on Blockchain in Smart Grid", "abstract": "Nowadays, with the diversification and decentralization of energy systems, the energy Internet makes it possible to interconnect distributed energy sources and consumers. In the energy trading market, the traditional centralized model relies entirely on trusted third parties. However, as the number of entities involved in the transactions grows and the forms of transactions diversify, the centralized model gradually exposes problems such as insufficient scalability, High energy consumption, and low processing efficiency. To address these challenges, we propose a secure and efficient energy renewable trading scheme based on blockchain. In our scheme, the electricity market trading model is divided into two levels, which can not only protect the privacy, but also achieve a green computing. In addition, in order to adapt to the relatively weak computing power of the underlying equipment in smart grid, we design a credibility based equity proof mechanism to greatly improve the system availability. Compared with other similar distributed energy trading schemes, we prove the advantages of our scheme in terms of high operational efficiency and low computational overhead through experimental evaluations. Additionally, we conduct a detailed security analysis to demonstrate that our solution meets the security requirements.", "corpus_id": 203655995, "venue": "2019 IEEE 21st International Conference on High Performance Computing and Communications; IEEE 17th International Conference on Smart City; IEEE 5th International Conference on Data Science and Systems (HPCC/SmartCity/DSS)", "year": 2019, "author_names": [ "Xin Lu", "Zhitao Guan", "Xiao Zhou", "Xiaojiang Du", "Longfei Wu", "Mohsen Guizani" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "198967738", "title": "Design and Field Implementation of Blockchain Based Renewable Energy Trading in Residential Communities", "abstract": "This paper proposes a peer to peer (P2P) blockchain based energy trading market platform for residential communities with the objective of reducing overall community peak demand and household electricity bills. Smart homes within the community place energy bids for its available distributed energy resources (DERs) for each discrete trading period during a day, and a double auction mechanism is used to clear the market and compute the market clearing price (MCP) The marketplace is implemented on a permissioned blockchain infrastructure, where bids are stored to the immutable ledger and smart contracts are used to implement the MCP calculation and award service contracts to all winning bids. Utilizing the blockchain obviates the need for a trusted, centralized auctioneer, and eliminates vulnerability to a single point of failure. Simulation results show that the platform enables a community peak demand reduction of 46% as well as a weekly savings of 6% The platform is also tested at a real world Canadian microgrid using the Hyperledger Fabric blockchain framework, to show the end to end connectivity of smart home DERs to the platform.", "corpus_id": 198967738, "venue": "2019 2nd International Conference on Smart Grid and Renewable Energy (SGRE)", "year": 2019, "author_names": [ "Shivam Saxena", "Hany Essa Zidan Farag", "Aidan Brookson", "Hjalmar K Turesson", "Henry M Kim" ], "n_citations": 10, "n_key_citations": 1, "score": 1 } ]

[ { "doc_id": "73473574", "title": "Disaster Related Surveillance Among US Virgin Islands (USVI) Shelters During the Hurricanes Irma and Maria Response", "abstract": "Abstract Objectives Two Category 5 storms, Hurricane Irma and Hurricane Maria, hit the U.S. Virgin Islands (USVI) within 13 days of each other in September 2017. These storms caused catastrophic damage across the territory, including widespread loss of power, destruction of homes, and devastation of critical infrastructure. During large scale disasters such as Hurricanes Irma and Maria, public health surveillance is an important tool to track emerging illnesses and injuries, identify at risk populations, and assess the effectiveness of response efforts. The USVI Department of Health (DoH) partnered with shelter staff volunteers to monitor the health of the sheltered population and help guide response efforts. Methods Shelter volunteers collect data on the American Red Cross Aggregate Morbidity Report form that tallies the number of client visits at a shelter's health services every 24 hours. Morbidity data were collected at all 5 shelters on St. Thomas and St. Croix between September and October 2017. This article describes the health surveillance data collected in response to Hurricanes Irma and Maria. Results Following Hurricanes Irma and Maria, 1130 health related client visits were reported, accounting for 1655 reasons for the visits (each client may have more than 1 reason for a single visit) Only 1 shelter reported data daily. Over half of visits (51.2% were for health care management; 17.7% for acute illnesses, which include respiratory conditions, gastrointestinal symptoms, and pain; 14.6% for exacerbation of chronic disease; 9.8% for mental health; and 6.7% for injury. Shelter volunteers treated many clients within the shelters; however, reporting of the disposition (eg, referred to physician, pharmacist) was often missed (78.1% Conclusion Shelter surveillance is an efficient means of quickly identifying and characterizing health issues and concerns in sheltered populations following disasters, allowing for the development of evidence based strategies to address identified needs. When incorporated into broader surveillance strategies using multiple data sources, shelter data can enable disaster epidemiologists to paint a more comprehensive picture of community health, thereby planning and responding to health issues both within and outside of shelters. The findings from this report illustrated that managing chronic conditions presented a more notable resource demand than acute injuries and illnesses. Although there remains room for improvement because reporting was inconsistent throughout the response, the capacity of shelter staff to address the health needs of shelter residents and the ability to monitor the health needs in the sheltered population were critical resources for the USVI DoH overwhelmed by the disaster. (Disaster Med Public Health Preparedness. 2019;13:38 43)", "corpus_id": 73473574, "venue": "Disaster Medicine and Public Health Preparedness", "year": 2019, "author_names": [ "Amy Helene Schnall", "Joseph Jay Roth", "Lisa Laplace Ekpo", "Irene Guendel", "Michelle S Davis", "Esther M Ellis" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "224987772", "title": "Health and Social Services in Puerto Rico Before and After Hurricane Maria: Predisaster Conditions, Hurricane Damage, and Themes for Recovery.", "abstract": "\"In September 2017, Puerto Rico was struck by two major hurricanes Irma and Maria that intensified existing challenges in Puerto Rico's health and social services infrastructure. In the aftermath, the government of Puerto Rico created a long term recovery plan built on an evidence based assessment of the damage from the hurricanes and the ongoing needs across Puerto Rico. Development of the recovery plan was supported by the Federal Emergency Management Agency, other federal agencies, local stakeholders, and analysis from the Homeland Security Operational Analysis Center (HSOAC) operated by RAND Corporation under contract with the U.S. Department of Homeland Security. HSOAC research provided the foundation for the 31 courses of action in the recovery plan addressing the health and social services sector. These actions are a mix of social, governmental, fiscal, and economic policies and reforms. This collection of actions presents an opportunity to build a more resilient health and social services infrastructure and regional health care networks to ensure reliable access to services, promote health and well being, and more efficiently and effectively respond to public health crises and future disasters. The actions span the areas of health care, public health and emergency preparedness, environmental health, mental and behavioral health, and social services. The damage and needs assessment and courses of actions cover four major themes: building system capacity to respond both during disasters and routine times; strengthening the health and social services workforce; strengthening support services for at need populations; and creating health promoting communities.", "corpus_id": 224987772, "venue": "Rand health quarterly", "year": 2021, "author_names": [ "Anita Chandra", "Terry Marsh", "Jaime Madrigano", "Molly M Simmons", "Mahshid Abir", "Ed Chan", "Jamie Ryan", "Nupur Nanda", "Michelle D Ziegler", "Christopher Lee Nelson" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "224902921", "title": "Public Buildings in Puerto Rico After Hurricane Maria: Prestorm Challenges, Hurricane Damage, and Suggested Courses of Action for Recovery", "abstract": "The government of Puerto Rico submitted a recovery plan to Congress in 2018 describing a strategic approach to recover from the 2017 hurricane destruction. HSOAC input provides a summary of damage to public buildings and the basis for 12 courses of action to repair hurricane damage and modernize the public building infrastructure to increase resilience to natural hazards, improve energy efficiency, and improve functionality and user experience.", "corpus_id": 224902921, "venue": "", "year": 2020, "author_names": [ "T Z Latourrette", "Benjamin M Miller", "Teddy Ulin", "Kristin Van Abel", "Krista S Langeland", "Nupur Nanda" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "186325580", "title": "Description Analysis of Primary Care Issues in Puerto Rico after Hurricane Maria: Results from Federal Medical Shelter Manati", "abstract": "Introduction: In September 2017, Hurricane Maria devastated Puerto Rico's health care infrastructure. To meet the demands of ongoing primary care and medical emergencies, Federal Medical Shelters (FMS) were set up to serve local communities for the weeks after the hurricane. A team of health professionals from New York assisted federal authorities in the provision of healthcare in the FMS. Aim: To describe the population of patients requesting medical care in the aftermath of Hurricane Maria at FMS Manati and to categorize the range of problems faced by patients after the hurricane, and examine how this changed longitudinally over the course of the operation. Methods: Researchers collected basic data of patients at presentation to the FMS. Descriptive analyses were performed of the patient population and nature of presenting illnesses. Chi squared analysis was performed to compare the change over time of presenting complaints. Ethics approval was granted by Columbia University. Results: Data was collected for a two week period approximately three weeks after the hurricane made landfall. The FMS saw 2,154 patients over a 14 day period. The population of patients (median age 43 years [IQR 39 years] assessed was bimodal in distribution, with one peak in children at 1 year. A second peak occurred at age 53 years. 60.2% of presenting complaints were infection or chronic disease related. Musculoskeletal complaints were the third most common. Chi squared tests revealed no statistically significant change in the frequency of specific types of complaints between the start and end of data collection. Discussion: In the weeks after Hurricane Maria, infants and elderly were seen to predominantly seek medical care. Likely related to the collapse of the healthcare infrastructure, there was a high prevalence of infection related and chronic medical conditions. The data support the need to focus resources to treat vulnerable populations, infectious issues, and chronic medical conditions.", "corpus_id": 186325580, "venue": "Prehospital and Disaster Medicine", "year": 2019, "author_names": [ "Arnab K Ghosh", "Pia Daniel" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225129993", "title": "After Hurricane Maria: Predisaster Conditions, Hurricane Damage, and Recovery Needs in Puerto Rico", "abstract": "To support development of Puerto Rico's short and long term recovery and resilience plan, experts conducted a comprehensive assessment of the commonwealth's challenges and the damage caused by the 2017 hurricanes. They identified short and longer term needs for Puerto Rico to recover and to build resilience to future storms; economic, social, and environmental trends; and ongoing governance challenges. This report summarizes their work.", "corpus_id": 225129993, "venue": "", "year": 2020, "author_names": [ "Jordan Fischbach", "Linnea Warren May", "Katie Whipkey", "Shoshana R Shelton", "Christine Anne Vaughan", "Devin Tierney", "Kristin J Leuschner", "Lisa S Meredith", "Hilary J Peterson" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "224985942", "title": "The Education Sector in Puerto Rico After Hurricane Maria: Predisaster Conditions, Hurricane Damage, and Themes for Recovery", "abstract": "Presenting a strategic approach to aid Puerto Rico's recovery from Hurricanes Irma and Maria, the report details prestorm conditions, assesses damage and recovery needs, and describes courses of action for the Education sector. Analyses and discussions with local education stakeholders and subject matter experts informed the development of 13 courses of action to support Puerto Rico's recovery plan and efforts to transform the education system.", "corpus_id": 224985942, "venue": "", "year": 2020, "author_names": [ "Christopher Lee Nelson", "Andrea Prado Tuma", "Terry Marsh", "Megan Andrew", "Drew M Anderson", "Anamarie Auger Whitaker", "Lynn A Karoly", "Robert Francis Murphy", "Nupur Nanda", "Jamie Ryan", "Troy D Smith", "Anita Chandra" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "224957565", "title": "Municipalities on the Front Lines of Puerto Rico's Recovery: Assessing Damage, Needs, and Opportunities for Recovery After Hurricane Maria", "abstract": "Homeland Security Operational Analysis Center experts assessed Hurricanes Irma and Maria's effect on Puerto Rico's municipalities' ability to govern, deliver services, and recover from the damage they incurred. They created a framework for assessing municipalities' recovery and developed courses of action to address damage and improve municipal capacity.", "corpus_id": 224957565, "venue": "", "year": 2020, "author_names": [ "Blas Nunez-Neto", "Andrew Lauland", "Jair Aguirre", "Gabriela Castro", "Italo A Gutierrez", "Marielena Lara", "Etienne Rosas", "Beverly A Weidmer" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "224854467", "title": "Community Planning and Capacity Building in Puerto Rico After Hurricane Maria: Predisaster Conditions, Hurricane Damage, and Courses of Action", "abstract": "The authors describe Puerto Rico's communities in terms of population characteristics, community and individual preparedness, and economic pressures leading up to Hurricanes Irma and Maria. They detail the storms' impact in terms of damage, community stress, and migration. The researchers developed courses of action to improve capacity for emergency preparedness, coordination, communication, recovery planning, and research and training.", "corpus_id": 224854467, "venue": "", "year": 2020, "author_names": [ "Vivian L Towe", "Elizabeth L Petrun Sayers", "Ed Chan", "Alice Y Kim", "Ashlyn K Tom", "Wing Yi Chan", "Jefferson P Marquis", "Michael W Robbins", "Lisa Saum-Manning", "Margaret M Weden", "Leslie Payne" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213730741", "title": "Dose Response of the Pro Inflammatory Potential Induced by Indoor Settled Dust from Homes with Different Levels of Water Damage during Hurricane Maria in San Juan, Puerto Rico", "abstract": "", "corpus_id": 213730741, "venue": "", "year": 2020, "author_names": [ "Felix E Rivera-Mariani", "Summer Pellechio", "Hayat H Srour", "Ruslan Fomenko", "Benjamin Bolanos", "Filipa Godoy-Vitorino", "Kerry A Kinney", "Juan P Maestre", "Humberto Cavallin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "213389807", "title": "Associations between Upper Respiratory Symptom Scores of Puerto Rican Residents, Pro Inflammatory Potential of Indoor Settled Dust, and Level of Water Damage to Homes during Hurricane Maria", "abstract": "", "corpus_id": 213389807, "venue": "", "year": 2020, "author_names": [ "Sukeina Nasser", "Hayat H Srour", "Benjamin Bolanos", "Filipa Godoy-Vitorino", "Kerry A Kinney", "Juan P Maestre", "Humberto Cavallin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "3747934", "title": "Blockchain for IoT security and privacy: The case study of a smart home", "abstract": "Internet of Things (IoT) security and privacy remain a major challenge, mainly due to the massive scale and distributed nature of IoT networks. Blockchain based approaches provide decentralized security and privacy, yet they involve significant energy, delay, and computational overhead that is not suitable for most resource constrained IoT devices. In our previous work, we presented a lightweight instantiation of a BC particularly geared for use in IoT by eliminating the Proof of Work (POW) and the concept of coins. Our approach was exemplified in a smart home setting and consists of three main tiers namely: cloud storage, overlay, and smart home. In this paper we delve deeper and outline the various core components and functions of the smart home tier. Each smart home is equipped with an always online, high resource device, known as \"miner\" that is responsible for handling all communication within and external to the home. The miner also preserves a private and secure BC, used for controlling and auditing communications. We show that our proposed BC based smart home framework is secure by thoroughly analysing its security with respect to the fundamental security goals of confidentiality, integrity, and availability. Finally, we present simulation results to highlight that the overheads (in terms of traffic, processing time and energy consumption) introduced by our approach are insignificant relative to its security and privacy gains.", "corpus_id": 3747934, "venue": "2017 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops)", "year": 2017, "author_names": [ "Ali Dorri", "Salil S Kanhere", "Raja Jurdak", "Praveen Gauravaram" ], "n_citations": 887, "n_key_citations": 36, "score": 0 }, { "doc_id": "209383028", "title": "Trustworthiness in IoT A Standards Gap Analysis on Security, Data Protection and Privacy", "abstract": "With the emergence of new digital trends like Internet of Things (IoT) more industry actors and technical committees pursue research in utilising such technologies as they promise a better and optimised management, improved energy efficiency and a better quality living through a wide array of value added services. However, as sensing, actuation, communication and control become increasingly more sophisticated, such promising data driven systems generate, process, and exchange larger amounts of security critical and privacy sensitive data, which makes them attractive targets of attacks. In turn this affirms the importance of trustworthiness in IoT and emphasises the need of a solid technical and regulatory foundation. The goal of this paper is to first introduce the concept of trustworthiness in IoT, its main pillars namely, security, privacy and data protection, and then analyse the state of the art in research and standardisation for each of these subareas. Throughout the paper, we develop and refer to Unmanned Aerial Vehicles (UAVs) as a promising value added service example of mobile IoT devices. The paper then presents a thorough gap analysis and concludes with recommendations for future work.", "corpus_id": 209383028, "venue": "2019 IEEE Conference on Standards for Communications and Networking (CSCN)", "year": 2019, "author_names": [ "Nader S Labib", "Matthias R Brust", "Gregoire Danoy", "Pascal Bouvry" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "225960896", "title": "Research on the Security and Privacy Issues of IOT in E commerce", "abstract": "In the context of rapid development of e commerce, the Internet of Thing, an emerging technology shorted for IOT, has gradually matured and played a great role in the field of e commerce. However, many security issues of data on the cloud platform used for storage and calculation has occurred with the increase of data of IOT in E commerce. Based on the guarantee of logic security in E commerce business and the protection of users' privacy data, this paper proposes a comprehensive and high efficient distributed solution oriented to actual data. First, redundant parity vectors are constructed by distributing error correction codes through files to ensure the credibility of the data. Second, through distributed verification mode of homomorphic token and error collecting code, the storage accuracy of business logic data is guaranteed and the location of the error data is given. Finally, with the detailed analysis of security and efficiency, the scheme is proposed efficiently so as to defend various malicious data tampering and stealing attack. In the results of experimental verification of data tampering attacks and data storage errors, the scheme proposed in this paper has a high probability of detecting a very small amount of data tampering, and at the same time, it can locate the servers storing the wrong data, therefore, it has high application value.", "corpus_id": 225960896, "venue": "", "year": 2020, "author_names": [ "Mingli Hou" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "155107127", "title": "Enhancing IoT Security and Privacy Using Distributed Ledgers with IOTA and the Tangle", "abstract": "The Internet of Things (IoT) devices currently rely on centralized, brokered communication models which call for a number of security flaws and threats. Privacy security remain a challenge owing to the existing systems being centralized creating a single point of failure. In this paper, we lay out an architecture for incorporating a concept similar to Blockchain the technology that underpins the cryptocurrency Bitcoin and many other cryptocurrencies to provide decentralized security and privacy for IoT devices. Currently, the issue with most IoT devices is that they lack the processing power, storage and computational overhead to run consensus algorithms to be an active part of the Blockchain network. The current issue with the blockchain on the other hand, is its low scalability and low number of transactions per second. We present an innovative approach using a technology called IOTA. This addresses some of the most important problems with existing blockchain infrastructure such as being able to run on lightweight devices with constrained memory. We eliminate transaction fees and the concept of mining which requires a large amount of processing power to compete with other miners. IOTA's main component is the Tangle, a guided acyclic graph (DAG) for transaction storage. We discuss creation of two IoT applications on the tangle a smart utility meter system and a smart car transaction system which are connected to internet through Low Power Wide Area IoT networks.", "corpus_id": 155107127, "venue": "2019 6th International Conference on Signal Processing and Integrated Networks (SPIN)", "year": 2019, "author_names": [ "Bilal Shabandri", "Piyush Maheshwari" ], "n_citations": 19, "n_key_citations": 0, "score": 0 }, { "doc_id": "169675923", "title": "Chapter Eight A blockchain based access control framework for the security and privacy of IoT with strong anonymity unlinkability and intractability guarantees", "abstract": "Abstract Motivated by the recent explosion of interest around the blockchain, we examine whether they make a good fit to build a lightweight and robust access control framework to address security and privacy issues in the Internet of Things (IoT) sector. In this direction, this chapter discusses the limitations of the centralized model to secure IoT and proposes the blockchain approach as example of successful distributed system to bring security and privacy to IoT devices. In this direction, we introduce FairAccess and PPDAC, as a lightweight and privacy preserving access control framework based on the emergent blockchain technology, mainly the permissionless and public type, to ensure fine grained access control functions for IoT devices with strong anonymity guarantee for IoT end users. The proposed framework retains the benefits of the blockchain to meet IoT security and privacy arising needs while overcoming the challenges in integrating the blockchain to IoT.", "corpus_id": 169675923, "venue": "Adv. Comput.", "year": 2019, "author_names": [ "Aafaf Ouaddah" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "195697948", "title": "Security and Privacy in IoT Systems: A Case Study of Healthcare Products", "abstract": "Internet of Things (IoT) is facilitated by heterogeneous technologies, which contribute to the providing of innovative services in a large number of application domains. The satisfaction of security and privacy requirements in this scenario are becoming a main challenge for IoT systems and their developers. Nevertheless, most works on IoT security and privacy requirements look at these requirements from a high level view. Hence, important aspects of security and privacy functionalities will be disregarded, causing wrong design decisions. To combat this problem, in our previous work, we summarized the most current documents related to security and privacy functionalities in the setting of IoT and provided a new taxonomy framework that organizes all aspects of security and privacy baselines, guidelines and recommendations. To give an understanding of how the framework can help to improve security and privacy of IoT products, and help to facilitate developing and designing secure and privacy aware IoT systems, in this paper we delve deeper and demonstrate the usefulness of the framework by a case study of healthcare products, in combination with a recent security classification method.", "corpus_id": 195697948, "venue": "2019 13th International Symposium on Medical Information and Communication Technology (ISMICT)", "year": 2019, "author_names": [ "Elahe Fazeldehkordi", "Olaf Owe", "Josef Noll" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "209900890", "title": "Security and Privacy Functionalities in IoT", "abstract": "Internet of Things (IoT) offers a variety of technologies for connecting different kinds of heterogeneous devices. Security and privacy are becoming the main issue for IoT systems and their developers. Nevertheless, most works on IoT security and privacy requirements look at these requirements from a high level view. Hence, the essential aspects of security and privacy functionalities will be disregarded, causing wrong design decisions. To combat this problem, this paper summarizes the most current documents related to security and privacy functionalities in the setting of IoT and provides a new taxonomy framework that organizes all aspects of security and privacy baselines, guidelines, and recommendations. To give an understanding of how the framework can help to improve security and privacy of IoT products, we combine it with a security classification method and demonstrate the usefulness by a case study of health products. Our framework can serve as a cornerstone towards the development of appropriate security solutions.", "corpus_id": 209900890, "venue": "2019 17th International Conference on Privacy, Security and Trust (PST)", "year": 2019, "author_names": [ "Elahe Fazeldehkordi", "Olaf Owe", "Josef Noll" ], "n_citations": 1, "n_key_citations": 1, "score": 1 }, { "doc_id": "26283664", "title": "Security and privacy issues for an IoT based smart home", "abstract": "Internet of Things (IoT) can support numerous applications and services in various domains, such as smart cities and smart homes. IoT smart objects interact with other components e.g. proxies, mobile devices, and data collectors, for management, data sharing and other activities in the context of the provided service. Though such components contribute to address various societal challenges and provide new advanced services for users, their limited processing capabilities make them vulnerable to well known security and privacy threats. Until now various research works have studied security and privacy in IoT, validating this claim. However, to the best of our knowledge literature lacks research focusing on security and privacy flaws introduced in IoT through interactions among different devices supporting a smart home architecture. In particular, we set up the scene for a security and privacy threat analysis for a typical smart home architecture using off the shelf components. To do so, we employ a smart home IoT architecture that enables users to interact with it through various devices that support smart house management, and we analyze different scenarios to identify possible security and privacy issues for users.", "corpus_id": 26283664, "venue": "2017 40th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)", "year": 2017, "author_names": [ "Dimitris Geneiatakis", "Ioannis Kounelis", "Ricardo Neisse", "Igor Nai Fovino", "Gary Steri", "Gianmarco Baldini" ], "n_citations": 82, "n_key_citations": 3, "score": 0 }, { "doc_id": "13707038", "title": "A taxonomy of IoT: Security and privacy threats", "abstract": "Potential Security and Privacy concerns are widely discussed in the community of Internet of Things (IoT) however, the issue is still not fully addressed, and the demands for new methods of investigation are highly appraised. The current published research focused more on identifying the security issues associated with early type of IoT's applications based on sensors, such as RFID and WSN. However, todays IoT commercial applications are more advanced and use different of integrated objects. This research paper utilizes Design Science Research (DSR) methodology to better understand the security and privacy issue in IoT through creating an artifact. The purpose of this study is to propose taxonomy in order to categorize IoT's objects, so security and privacy issues would be fully addressed.", "corpus_id": 13707038, "venue": "2018 International Conference on Information and Computer Technologies (ICICT)", "year": 2018, "author_names": [ "Badr Alsamani", "Husam Lahza" ], "n_citations": 10, "n_key_citations": 1, "score": 0 }, { "doc_id": "53045279", "title": "Review of Different Encryptionand Decryption Techniques Used for Security and Privacy of IoT in Different Applications", "abstract": "Internet of Things (IoT) allows different devices connected to global network or Internet for desired application. This emerging trend of Internet of Things have been developing with exponential rate since last two decades and where different technologies and protocol stacks have been introduced in market. While developing different techniques of integration of smart devices we are facing security and privacy issues of data. To cope up with these issues different techniques have been introduced to overcome this problem. In this research paper we provide the survey of different techniques and technologies used to provide reliable and secure data communications. This research paper will focus on encryption and decryption techniques used in IoT.", "corpus_id": 53045279, "venue": "2018 IEEE International Conference on Smart Energy Grid Engineering (SEGE)", "year": 2018, "author_names": [ "Rashid Hussain", "Irfan Abdullah" ], "n_citations": 7, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "8755162", "title": "The FAIR Guiding Principles for scientific data management and stewardship", "abstract": "There is an urgent need to improve the infrastructure supporting the reuse of scholarly data. A diverse set of stakeholders representing academia, industry, funding agencies, and scholarly publishers have come together to design and jointly endorse a concise and measureable set of principles that we refer to as the FAIR Data Principles. The intent is that these may act as a guideline for those wishing to enhance the reusability of their data holdings. Distinct from peer initiatives that focus on the human scholar, the FAIR Principles put specific emphasis on enhancing the ability of machines to automatically find and use the data, in addition to supporting its reuse by individuals. This Comment is the first formal publication of the FAIR Principles, and includes the rationale behind them, and some exemplar implementations in the community.", "corpus_id": 8755162, "venue": "Scientific data", "year": 2016, "author_names": [ "Mark D Wilkinson", "Michel Dumontier", "IJsbrand Jan Aalbersberg", "Gabrielle Appleton", "Myles Axton", "Arie Baak", "Niklas Blomberg", "Jan-Willem Boiten", "Luiz Olavo Bonino da Silva Santos", "Philip E Bourne", "Jildau Bouwman", "Anthony J Brookes", "Tim Clark", "Merce Crosas", "Ingrid Dillo", "Olivier Dumon", "Scott C Edmunds", "Chris T A Evelo", "Richard Finkers", "Alejandra N Gonzalez-Beltran", "Alasdair J G Gray", "Paul T Groth", "Carole A Goble", "Jeffrey S Grethe", "Jaap Heringa", "Peter A C 't Hoen", "Rob W W Hooft", "Tobias Kuhn", "Ruben G Kok", "Joost N Kok", "Scott J Lusher", "Maryann E Martone", "Albert Mons", "Abel Laerte Packer", "Bengt Persson", "Philippe Rocca-Serra", "Marco Roos", "Rene C van Schaik", "Susanna-Assunta Sansone", "Erik Schultes", "Thierry Sengstag", "Ted Slater", "George O Strawn", "Morris A Swertz", "Mark Thompson", "Johan van der Lei", "Erik M van Mulligen", "Jan Velterop", "Andra Waagmeester", "Peter Wittenburg", "Katy Wolstencroft", "Jun Zhao", "Barend Mons" ], "n_citations": 3176, "n_key_citations": 177, "score": 1 }, { "doc_id": "174809523", "title": "Make scientific data FAIR", "abstract": "All disciplines should follow the geosciences and demand best practice for publishing and sharing data, argue Shelley Stall and colleagues.All disciplines should follow the geosciences and demand best practice for publishing and sharing data, argue Shelley Stall and colleagues.", "corpus_id": 174809523, "venue": "Nature", "year": 2019, "author_names": [ "Shelley Stall", "Lynn Yarmey", "Joel Cutcher-Gershenfeld", "Brooks Hanson", "Kerstin A Lehnert", "Brian A Nosek", "Mark A Parsons", "Erin M Robinson", "Lesley Wyborn" ], "n_citations": 66, "n_key_citations": 0, "score": 1 }, { "doc_id": "51924604", "title": "Understanding and Modeling Lossy Compression Schemes on HPC Scientific Data", "abstract": "Scientific simulations generate large amounts of floating point data, which are often not very compressible using the traditional reduction schemes, such as deduplication or lossless compression. The emergence of lossy floating point compression holds promise to satisfy the data reduction demand from HPC applications; however, lossy compression has not been widely adopted in science production. We believe a fundamental reason is that there is a lack of understanding of the benefits, pitfalls, and performance of lossy compression on scientific data. In this paper, we conduct a comprehensive study on state of the art lossy compression, including ZFP, SZ, and ISABELA, using real and representative HPC datasets. Our evaluation reveals the complex interplay between compressor design, data features and compression performance. The impact of reduced accuracy on data analytics is also examined through a case study of fusion blob detection, offering domain scientists with the insights of what to expect from fidelity loss. Furthermore, the trial and error approach to understanding compression performance involves substantial compute and storage overhead. To this end, we propose a sampling based estimation method that extrapolates the reduction ratio from data samples, to guide domain scientists to make more informed data reduction decisions.", "corpus_id": 51924604, "venue": "2018 IEEE International Parallel and Distributed Processing Symposium (IPDPS)", "year": 2018, "author_names": [ "Tao Lu", "Qing Liu", "Xubin He", "Huizhang Luo", "Eric Suchyta", "J Choi", "Norbert Podhorszki", "Scott Klasky", "Matthew Wolf", "Tong Liu", "Zhenbo Qiao" ], "n_citations": 38, "n_key_citations": 6, "score": 1 }, { "doc_id": "713219", "title": "Journey to the centre of the cell: Virtual reality immersion into scientific data", "abstract": "Visualization of scientific data is crucial not only for scientific discovery but also to communicate science and medicine to both experts and a general audience. Until recently, we have been limited to visualizing the three dimensional (3D) world of biology in 2 dimensions. Renderings of 3D cells are still traditionally displayed using two dimensional (2D) media, such as on a computer screen or paper. However, the advent of consumer grade virtual reality (VR) headsets such as Oculus Rift and HTC Vive means it is now possible to visualize and interact with scientific data in a 3D virtual world. In addition, new microscopic methods provide an unprecedented opportunity to obtain new 3D data sets. In this perspective article, we highlight how we have used cutting edge imaging techniques to build a 3D virtual model of a cell from serial block face scanning electron microscope (SBEM) imaging data. This model allows scientists, students and members of the public to explore and interact with a \"real\" cell. Early testing of this immersive environment indicates a significant improvement in students' understanding of cellular processes and points to a new future of learning and public engagement. In addition, we speculate that VR can become a new tool for researchers studying cellular architecture and processes by populating VR models with molecular data.", "corpus_id": 713219, "venue": "Traffic", "year": 2018, "author_names": [ "Angus P R Johnston", "James Rae", "Nicholas Ariotti", "Benjamin J Bailey", "Andrew R Lilja", "Robyn Webb", "Charles Ferguson", "Sheryl Maher", "Thomas P Davis", "Richard Webb", "John B McGhee", "Robert G Parton" ], "n_citations": 45, "n_key_citations": 1, "score": 0 }, { "doc_id": "4399600", "title": "Scientific data interpolation with low dimensional manifold model", "abstract": "Abstract We propose to apply a low dimensional manifold model to scientific data interpolation from regular and irregular samplings with a significant amount of missing information. The low dimensionality of the patch manifold for general scientific data sets has been used as a regularizer in a variational formulation. The problem is solved via alternating minimization with respect to the manifold and the data set, and the Laplace Beltrami operator in the Euler Lagrange equation is discretized using the weighted graph Laplacian. Various scientific data sets from different fields of study are used to illustrate the performance of the proposed algorithm on data compression and interpolation from both regular and irregular samplings.", "corpus_id": 4399600, "venue": "J. Comput. Phys.", "year": 2018, "author_names": [ "Wei Zhu", "Bao Wang", "Richard C Barnard", "Cory D Hauck", "Frank Jenko", "S Osher" ], "n_citations": 10, "n_key_citations": 1, "score": 0 }, { "doc_id": "2178023", "title": "Significantly Improving Lossy Compression for Scientific Data Sets Based on Multidimensional Prediction and Error Controlled Quantization", "abstract": "Today's HPC applications are producing extremely large amounts of data, such that data storage and analysis are becoming more challenging for scientific research. In this work, we design a new error controlled lossy compression algorithm for large scale scientific data. Our key contribution is significantly improving the prediction hitting rate (or prediction accuracy) for each data point based on its nearby data values along multiple dimensions. We derive a series of multilayer prediction formulas and their unified formula in the context of data compression. One serious challenge is that the data prediction has to be performed based on the preceding decompressed values during the compression in order to guarantee the error bounds, which may degrade the prediction accuracy in turn. We explore the best layer for the prediction by considering the impact of compression errors on the prediction accuracy. Moreover, we propose an adaptive error controlled quantization encoder, which can further improve the prediction hitting rate considerably. The data size can be reduced significantly after performing the variable length encoding because of the uneven distribution produced by our quantization encoder. We evaluate the new compressor on production scientific data sets and compare it with many other state of the art compressors: GZIP, FPZIP, ZFP, SZ 1.1, and ISABELA. Experiments show that our compressor is the best in class, especially with regard to compression factors (or bit rates) and compression errors (including RMSE, NRMSE, and PSNR) Our solution is better than the second best solution by more than a 2x increase in the compression factor and 3.8x reduction in the normalized root mean squared error on average, with reasonable error bounds and user desired bit rates.", "corpus_id": 2178023, "venue": "2017 IEEE International Parallel and Distributed Processing Symposium (IPDPS)", "year": 2017, "author_names": [ "Dingwen Tao", "Sheng Di", "Zizhong Chen", "Franck Cappello" ], "n_citations": 117, "n_key_citations": 32, "score": 0 }, { "doc_id": "199082903", "title": "Papers' Information in Scientific Data and China Scientific Data", "abstract": "Data Description:papers' information in Scientific Data and China Scientific Data Time range: 2018 01 11 to 2018 02 25; Data volume: 487KB; Data Format: .xlsx.", "corpus_id": 199082903, "venue": "", "year": 2018, "author_names": [ "Wen Liangming", "Wang Xiaodong", "Guo Lei", "Wu Zhangsheng", "Wang Weijun" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "63050084", "title": "On the Reuse of Scientific Data", "abstract": "While science policy promotes data sharing and open data, these are not ends in themselves. Arguments for data sharing are to reproduce research, to make public assets available to the public, to leverage investments in research, and to advance research and innovation. To achieve these expected benefits of data sharing, data must actually be reused by others. Data sharing practices, especially motivations and incentives, have received far more study than has data reuse, perhaps because of the array of contested concepts on which reuse rests and the disparate contexts in which it occurs. Here we explicate concepts of data, sharing, and open data as a means to examine data reuse. We explore distinctions between use and reuse of data. Lastly we propose six research questions on data reuse worthy of pursuit by the community: How can uses of data be distinguished from reuses? When is reproducibility an essential goal? When is data integration an essential goal? What are the tradeoffs between collecting new data and reusing existing data? How do motivations for data collection influence the ability to reuse data? How do standards and formats for data release influence reuse opportunities? We conclude by summarizing the implications of these questions for science policy and for investments in data reuse.", "corpus_id": 63050084, "venue": "Data Sci. J.", "year": 2017, "author_names": [ "Irene V Pasquetto", "Bernadette M Randles", "Christine L Borgman" ], "n_citations": 98, "n_key_citations": 3, "score": 0 }, { "doc_id": "14224621", "title": "Parallel Tensor Compression for Large Scale Scientific Data", "abstract": "As parallel computing trends towards the exascale, scientific data produced by high fidelity simulations are growing increasingly massive. For instance, a simulation on a three dimensional spatial grid with 512 points per dimension that tracks 64 variables per grid point for 128 time steps yields 8 TB of data, assuming double precision. By viewing the data as a dense five way tensor, we can compute a Tucker decomposition to find inherent low dimensional multilinear structure, achieving compression ratios of up to 5000 on real world data sets with negligible loss in accuracy. So that we can operate on such massive data, we present the first ever distributed memory parallel implementation for the Tucker decomposition, whose key computations correspond to parallel linear algebra operations, albeit with nonstandard data layouts. Our approach specifies a data distribution for tensors that avoids any tensor data redistribution, either locally or in parallel. We provide accompanying analysis of the computation and communication costs of the algorithms. To demonstrate the compression and accuracy of the method, we apply our approach to real world data sets from combustion science simulations. We also provide detailed performance results, including parallel performance in both weak and strong scaling experiments.", "corpus_id": 14224621, "venue": "2016 IEEE International Parallel and Distributed Processing Symposium (IPDPS)", "year": 2016, "author_names": [ "Woody Austin", "Grey Ballard", "Tamara G Kolda" ], "n_citations": 99, "n_key_citations": 11, "score": 0 }, { "doc_id": "53557203", "title": "Are Scientific Data Repositories Coping with Research Data Publishing?", "abstract": "Research data publishing is intended as the release of research data to make it possible for practitioners to (re)use them according to \"open science\" dynamics. There are three main actors called to deal with research data publishing practices: researchers, publishers, and data repositories. This study analyses the solutions offered by generalist scientific data repositories, i.e. repositories supporting the deposition of any type of research data. These repositories cannot make any assumption on the application domain. They are actually called to face with the almost open ended typologies of data used in science. The current practices promoted by such repositories are analysed with respect to eight key aspects of data publishing, i.e. dataset formatting, documentation, licensing, publication costs, validation, availability, discovery and access, and citation. From this analysis it emerges that these repositories implement well consolidated practices and pragmatic solutions for literature repositories. These practices and solutions can not totally meet the needs of management and use of datasets resources, especially in a context where rapid technological changes continuously open new exploitation prospects.", "corpus_id": 53557203, "venue": "Data Sci. J.", "year": 2016, "author_names": [ "Massimiliano Assante", "Leonardo Candela", "Donatella Castelli", "Alice Tani" ], "n_citations": 60, "n_key_citations": 3, "score": 0 } ]

[ { "doc_id": "229771264", "title": "Tou Xi Ye Wen Du woBian Hua sasetaI HDF(Hot shot I HDF)niokeruXun Huan Dong Tai Gai Shan Xiao Guo", "abstract": "", "corpus_id": 229771264, "venue": "", "year": 2019, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "208227080", "title": "Abstracts for Intermittent Infusion Hemodiafiltration (I HDF)", "abstract": "", "corpus_id": 208227080, "venue": "Blood Purification", "year": 2019, "author_names": [ "Ken Tsuchiya" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "202453877", "title": "(Te Ji 1 Xie Ye Jing Hua Fa noZhong Lei toshikumi) 4 Jian Xie Bu Chong Xing Xie Ye Tou Xi Lu Guo (I HDF)", "abstract": "", "corpus_id": 202453877, "venue": "", "year": 2019, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "187467654", "title": "On line HDF,Zheng Lu Guo Shi I HDF,Ni Lu Guo Shi I HDFniokeruPi Fu Huan Liu Ya (SPP)Wei Chi noJian Tao", "abstract": "", "corpus_id": 187467654, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "217256527", "title": "onrainHDF(O HDF)toJian Xie Bu Chong Xing Xie Ye Lu Guo Tou Xi (I HDF)noLin Chuang Xiao Guo noBi Jiao Jian Tao", "abstract": "", "corpus_id": 217256527, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "217812662", "title": "Jian Xie Bu Chong Xing Xie Ye Tou Xi (I HDF)noLin Chuang Jing Yan", "abstract": "", "corpus_id": 217812662, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216948533", "title": "Dang Yuan denoJian Xie Bu Chong Xing Xie Ye Tou Xi Lu Guo (i HDF)niokeruTou Xi Di Xie Ya Zheng noGai Shan nitsuite", "abstract": "", "corpus_id": 216948533, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "217846276", "title": "Qian Xi Shi O HDF+Jian Xie Bu Ye HDF(I HDF)noShi Xing Jing Yan", "abstract": "", "corpus_id": 217846276, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216922036", "title": "Jian Xie Bu Chong Xing HDF(I HDF)niyoruZheng Zhuang Gai Shan noPing Jia", "abstract": "", "corpus_id": 216922036, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216976262", "title": "Jian Xie Bu Ye Xing Xie Ye Tou Xi Lu Guo (I HDF)noLin Chuang Bao Gao", "abstract": "", "corpus_id": 216976262, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "104474495", "title": "Experimental study and modeling of the kinetics of gas hydrate formation for acetylene, ethylene, propane and propylene in the presence and absence of SDS", "abstract": "Abstract The kinetics of hydrate formation of the hydrocarbons acetylene, ethylene, propane, and propylene were investigated using a fully stirred batch reactor. In relation to hydrate formation, a kinetic model was used to determine the induction time, the rate of hydrate formation, the apparent hydration rate constant, water to hydrate conversion associated with hydrate growth as well the storage capacity. This was done for all gases investigated in this study. Experiments were performed in the temperature and pressure ranges of (273.7 280.0) K and (0.5 4.12) MPa, respectively. Furthermore, the effect of sodium dodecyl sulfate (SDS) on the gas hydrate formation rate was examined. A substantial growth in the hydrate nucleation rate was observed in the presence of SDS.", "corpus_id": 104474495, "venue": "Petroleum Science and Technology", "year": 2019, "author_names": [ "Hamed Hashemi", "Saeideh Babaee", "Kaniki Tumba", "Amir H Mohammadi", "Paramespri Naidoo", "Deresh Ramjugernath" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "98648985", "title": "Clathrate hydrate formation from a hydrocarbon gas mixture: Compositional evolution of formed hydrate during an isobaric semi batch hydrate forming operation", "abstract": "The clathrate hydrate formation from a model natural gas, i.e. a mixture of methane, ethane, and propane in a 90:7:3molar ratio, under a constant pressure was experimentally investigated, focusing on the compositional evolution of hydrate crystals formed inside a gas bubbling type reactor during each semi batch hydrate forming operation. The experimental system used in this study was specially designed for obtaining several hydrate samples formed at different, arbitrarily selected stages during each hydrate forming operation. Each hydrate sample was analyzed by a gas chromatograph to determine the mole fractions of methane, ethane and propane encaged in the hydrate. These analyses revealed a monotonic increase in the methane fraction and decreases in the ethane and propane fractions during each operation until a quasi steady state was established. Powder X ray diffraction analyses showed that both structure I and structure II crystals were simultaneously formed during the quasi steady period. The compositional evolution of the hydrates formed during the early stages before the quasi steady state was reached deviated from corresponding predictions based on the thermodynamic simulation scheme previously reported. A hypothetical explanation for the discrepancy between the experimental and simulation based results was provided.", "corpus_id": 98648985, "venue": "", "year": 2014, "author_names": [ "Wataru Kondo", "Kaoru Ohtsuka", "Ryo Ohmura", "Satoshi Takeya", "Yasuhiko H Mori" ], "n_citations": 46, "n_key_citations": 0, "score": 1 }, { "doc_id": "55106225", "title": "MODELING OF METHANE AND PROPANE HYDRATE FORMATION KINETICS BASED ON CHEMICAL AFFINITY", "abstract": "In this study, experimental data on the kinetics of methane and propane hydrate formation at constant volume were collected. The experiments were carried out in a batch reactor under different temperatures and pressures. The chemical a\u000enity was used for modeling of the hydrate formation rate in a constant volume process. In this method, the system was considered as a classical thermodynamic or macroscopic view. The results show that this method can predict constant volume experimental data well for both crystals I and II hydrate former.", "corpus_id": 55106225, "venue": "", "year": 2010, "author_names": [ "Farshad Varaminian", "Amir Abbas Izadpanah" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "101364484", "title": "Clathrate Hydrate Formation from a Methane Ethane Propane Mixture in an Unstirred Surfactant Containing System", "abstract": "This paper describes an experimental study of clathrate hydrate formation from a model natural gas, i.e. a mixture of methane, ethane, and propane in a 90:7:3 molar ratio, in an unstirred gas/liquid system containing a surfactant additive. The specific process of interest in this study is the hydrate formation in a semi batch type reactor charged with a quiescent aqueous phase containing sodium dodecyl sulfate and a well mixed gas phase, to which the above methane ethane propane mixture is continuously supplied to compensate for the loss in the gas as a result of hydrate formation and thereby to maintain a constant pressure inside the reactor. We performed continual gas chromatographic measurements of the gas phase inside the reactor during each hydrate forming operation to determine how the gas phase composition chronologically changes as a result of the fractionation accompanying the hydrate formation. These measurements showed an anomalous pattern of change in the gas phase composition, such that", "corpus_id": 101364484, "venue": "", "year": 2012, "author_names": [ "Naoki Ando", "Takehide Kodama", "Wataru Kondo", "Yasuhiko H Mori" ], "n_citations": 10, "n_key_citations": 0, "score": 0 }, { "doc_id": "95724650", "title": "Kinetics of structure II gas hydrate formation for propane and ethane using an in situ particle size analyzer and a Raman spectrometer", "abstract": "Abstract The kinetics of structure II gas hydrates, formed from pure propane and a mixture of propane and ethane, were investigated and intrinsic rate constants were regressed from the experimental data. The experiments were conducted in a semi batch stirred tank reactor equipped with an in situ particle size analyzer and connected to an external Raman spectrometer. Experiments were conducted with pure propane at temperatures ranging from 274 to 276 K and pressures ranging from 0.39 to 0.43 MPa. The intrinsic rate constant for ethane in structure II was subsequently regressed from experimental data on the formation of hydrates formed from an equimolar mixture of propane and ethane at 274 K and 0.35 MPa. Raman spectroscopy was used to verify that ethane was present only in the large sII cavity.", "corpus_id": 95724650, "venue": "", "year": 2011, "author_names": [ "Faisal Al-Otaibi", "Matthew A Clarke", "Brij B Maini", "P Raj Bishnoi" ], "n_citations": 17, "n_key_citations": 0, "score": 0 }, { "doc_id": "101659489", "title": "Clathrate Hydrate Formation from a Hydrocarbon Gas Mixture: Evolution of Gas Phase Composition in a Hydrate Forming Reactor", "abstract": "The clathrate hydrate formation from a model natural gas, i.e. a mixture of methane, ethane, and propane in a 90:7:3 molar ratio, under constant pressure was experimentally investigated, focusing on the evolution of the gas phase composition inside the hydrate forming reactor during each semi batch hydrate forming operation. In a previous study (Kobayashi, T. Imura, N. Ohmura, R. Mori, Y. H. Energy Fuels 2007, 21, 545 553) we measured the evolution of the gas phase composition during the initial period (up to ~3 h) following the inception of hydrate formation, in which the total amount of gas uptake in the formed hydrates was limited to 0.8 times the amount of gas initially contained in the reactor. This study extended the previous study, such that we could observe the evolution of the gas phase composition for a much longer time (up to ~50 h) until a quasi steady state was established inside a newly constructed gas bubbling type reactor equipped with a gas phase mixing stirrer that enabled the gas s.", "corpus_id": 101659489, "venue": "", "year": 2010, "author_names": [ "Wataru Kondo", "Hiroyuki Ogawa", "Ryo Ohmura", "Yasuhiko H Mori" ], "n_citations": 27, "n_key_citations": 1, "score": 0 }, { "doc_id": "136229238", "title": "Experimental Study On Formation of Propane Gas Hydrate By Fluidized Bed Type Reactor", "abstract": "This paper presents an experimental investigation for application of fluidized bed reactor to natural gas hydrate (NGH) production. Formation of gas hydrate requires the removal of formation heat. In this study, propane gas was used for the reason that propane gas hydrate (PGH) is formed under lower pressure condition than natural gas. Experiments on formation of PGH using fluidized bed reactor were conducted in batch operation and continuous operation. Residence time of powder required for the reduction of unconverted water content was obtained.", "corpus_id": 136229238, "venue": "", "year": 2007, "author_names": [ "Takuya Arai", "Yuzo Kato", "Toshihiko Iwasaki", "Noriaki Kanda", "K Uchida" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "97586099", "title": "Two Step Formation of Methane Propane Mixed Gas Hydrates in A Batch Type Reactor", "abstract": "Vapor compositions of methane and propane mixed gas in a batch type reactor were measured by gas chromatography during hydrate crystallization at 274 K with molar ratios of propane below 10 vol The volume ratio of propane in the vapor decreased as the hydrate crystallization progressed. When the initial propane concentration was between 4 and 8 vol rapid gas consumption occurred for about 1 h, causing an initial pressure drop, and after a temporary stabilization of the pressure, a second pressure drop occurred; that is, hydrate crystallization occurred in two steps. X Ray diffraction and Raman spectroscopic analyses on samples taken from the reactor during each step revealed that the structure II methane propane mixed gas hydrates crystallized in the first step, and structure I methane hydrates in the second step. This process was observed only when the partial pressure of methane was above the equilibrium pressure of methane hydrate at the end of the first step. (c) 2004 American Institute of Chemical Engineers AIChE J, 50: 518 523, 2004", "corpus_id": 97586099, "venue": "", "year": 2004, "author_names": [ "Tsutomu Uchida", "Minoru Moriwaki", "Satoshi Takeya", "Ikuko Y Ikeda", "Ryo Ohmura", "Jiro Nagao", "Hideki Minagawa", "Takao Ebinuma", "Hideo Narita", "Kazutoshi Gohara", "Shinji Mae" ], "n_citations": 69, "n_key_citations": 2, "score": 0 }, { "doc_id": "101708415", "title": "Natural Gas Hydrate Formation and Decomposition in the Presence of Kinetic Inhibitors. 3. Structural and Compositional Changes", "abstract": "A synthetic natural gas mixture composed of methane, ethane, and propane in a batch reactor was used to form gas hydrates in the presence of two commercial, chemical kinetic inhibitors, polyvinylpyrrolidone (PVP) and H1W85281, and one biological inhibitor, antifreeze protein type III (AFP III) Powder X ray diffraction and nuclear magnetic resonance spectroscopy showed that structure II hydrates dominated, as expected, but in the presence of the chemical inhibitors, structure I was also present. Raman spectroscopy confirmed the complexity and the heterogeneity of the guest composition within these hydrates, which was also consistent with the gas analysis obtained using gas chromatography. However, in the presence of AFP III, hydrates appeared to be relatively homogeneous structure II hydrates, with weaker evidence of structure I. When individual gas cage occupancies were calculated, both classes of inhibitors reduced large cage methane occupancy by ~25% With the chemical inhibitors, these large cage meth.", "corpus_id": 101708415, "venue": "", "year": 2011, "author_names": [ "Nagu Daraboina", "John A Ripmeester", "Virginia K Walker", "Peter Englezos" ], "n_citations": 85, "n_key_citations": 0, "score": 0 }, { "doc_id": "93509000", "title": "Formation and Decomposition of Gas Hydrates from the Mixtures of Methane Ethane Methane Propane", "abstract": "Formation and decomposition of gas hydrates were carried out for two binary gas mixtures containing 90.01% CH4 9.99% C2H? and 90.05% C3H? 9.95% C3H? The formation of the gas hydrate was conducted in a semi batch stirred reactor at constant temperature and pressure. During the hydrate formations the gas compositions were measured by gas chromatograph. ft was found that the CH4 concentration in gas phase increased as the hydrate crystallization progressed and the accumulation speed of methane was more rapid at lower driving force. Based on the gas phase analysis with overall mass balance, we are able to estimate the gas consumption ratio in hydrate phase. Our results indicate that the molar ratio of CH4/C2H? or CH4/C3H? in the hydrate phase was decreased as hydrate formation progressed. The decomposition of the gas hydrate was also carried out either by decreasing pressure or increasing temperature. ft was also noticed that the dissociation rate of C2H? or C3H? from gas hydrates was slower than that of CH4 during the hydrate decomposition stage. This study could be useful for the natural gas storage and capturing kinetics of the guest molecules in hydrate phase form the gas mixtures.", "corpus_id": 93509000, "venue": "", "year": 2008, "author_names": [ "Jinwoo Lee", "Young Seok Kim", "Dae-Won Park", "Ju Dong Lee" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "202159111", "title": "Optimizing activity data collection with gamification points using uncertainty based active learning", "abstract": "A big challenge for activity data collection is unavoidable to rely on users and to keep them motivated to provide labels. In this paper, we propose the idea of exploiting gamification points to motivate the users for activity data collection by using an uncertainty based active learning approach to evaluate those points. The novel idea behind this is that we approximate the score of the unlabeled examples according to the current model's uncertainty in its prediction of the corresponding activity labels, and using that score as gamification points. Thus, the users are motivated by getting gamification points as feedback based on their data annotation quality. 1,236 activity labels with smartphone sensors that we collected help to validate our proposed method. By evaluating with the dataset, the results show our proposed method has improvements in data quality, data quantity, and user engagement that reflect the improvement in activity data collection.", "corpus_id": 202159111, "venue": "UbiComp/ISWC Adjunct", "year": 2019, "author_names": [ "Nattaya Mairittha", "Tittaya Mairittha", "Sozo Inoue" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "49641834", "title": "Measurement of the effects of e learning courses gamification on motivation and satisfaction of students", "abstract": "In this paper, we present the results of a study which was conducted in two stages. The first part of the paper contains literature search findings and analyzes the existing self assessment scales for measuring motivation and satisfaction of students that were developed by other authors. In the second part of our study we created a battery of self assessment measures for collecting data for an overarching set of gamification related constructs/variables selected in accordance to those that are reported in literature) These scales were constructed by (a) adaptation and improvement of items from existing measures and (b) creation of novel items for measures of constructs that were found to be important in research articles on gamification and educational games. The initial empirical evaluation of this new questionnaire (battery of assessment scales) was performed on a large convenience sample of students (N=201) who attended a hybrid course on computer programming. These respondents were divided into an experimental group, which used gamified e learning course material, and a control group, which used a parallel (non gamified) version of the e learning course with equal theoretical content/For each self assessment scale of the questionnaire Cronbach alpha coefficients were calculated and the scales were slightly corrected to improve their internal consistency. We report the results concerning the effects of gamification on motivation and satisfaction, which were measured by respective assessment scales.", "corpus_id": 49641834, "venue": "2018 41st International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)", "year": 2018, "author_names": [ "Andrija Bernik", "Goran Bubas", "Danijel Radosevic" ], "n_citations": 15, "n_key_citations": 0, "score": 1 }, { "doc_id": "49594453", "title": "Gamification experience of an educational environment in software engineening: Gamifying a course of agility for software process improvement", "abstract": "In the last decade gamification has become as a useful strategy for make work environments more dynamic, specifically because it supports initiatives associated with the increase of performance characteristics of work teams such as motivation and commitment. In addition, in work areas such as education, gamification has spread as a useful strategy for make the classroom more dynamic. On the other hand, in the area of software engineering, the performance and productivity of the work team have been identified as key success factors, with motivation being an essential factor in achieving this success. Therefore, there is an important growth of gamification strategies in the classroom as alternatives to increase the motivation and commitment of the work teams. However, the existing teaching strategies in software engineering omit certain details about how to structure a possible learning environment, such as the classroom. In this work a methodological structure is proposed to gamify an educational environment of software engineering. The objective of this proposal is to contribute to the decrease of causes of failure of software development projects within which is the lack of motivation and commitment as well as social and human factors that affect processes related to software engineering. An example of activities developed in a course of agility for software process improvement of the Universidad de Medellin is presented. The methodological structure proposed was designed using technological tools and web 2.0 tools that managed to accompany the teaching learning process taking into account defined gamification principles.", "corpus_id": 49594453, "venue": "2018 13th Iberian Conference on Information Systems and Technologies (CISTI)", "year": 2018, "author_names": [ "Gloria Piedad Gasca-Hurtado", "Maria Clara Gomez", "Vianca Vega Zepeda" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "4824731", "title": "Improving argumentative writing Effects of a blended learning approach and gamification", "abstract": "This study investigated the effectiveness of a blended learning approach involving the thesis, analysis, and synthesis key (TASK) procedural strategy; online Edmodo discussions; online message labels; and writing models on student argumentative writing in a Hong Kong secondary school. It also examined whether the application of digital game mechanics increased student online contribution and writing performance. Three classes of Secondary 4 students (16to 17 year olds) participated in the 7 week study. The first experimental group (n 22) utilized the blended learning gamification approach. The second experimental group (n 30) utilized only the blended learning approach. In the control group (n 20) a teacher led direct instruction approach on the components of argumentation was employed. Data sources included students' preand post test written essays, students' online Edmodo postings, and student and teacher interviews. We found a significant improvement in students' writing using the blended learning approach. On topic online contributions were significantly higher when gamification was adopted. Student and teacher opinions on the blended learning approach were also examined.", "corpus_id": 4824731, "venue": "", "year": 2018, "author_names": [ "Yau Wai Lam" ], "n_citations": 35, "n_key_citations": 1, "score": 1 }, { "doc_id": "51988132", "title": "Gamification in teaching maintenance engineering: a Dutch experience in the rolling stock management learning", "abstract": "The aim of this study is to evaluate the application of an innovative serious game, based on the asset management of rolling stock, in the training of future maintenance engineers within the master course in mechanical engineering at the University of Twente. The Logistic Support Game (LSG) is a serious game developed together with Netherlands Railways (Nederlandse Spoorwegen, NS) and Invocate (design firm) as a tool to simulate the maintenance operations of a fleet of trains. The simulation shows four perspectives: the operations manager, the asset manager, the maintenance manager and the financial manager. The three goals of this innovative training are the improvement of student engagement in the learning process, the increas of active cooperation between students with different roles in a group, and the opportunity to receive feedback on decision making. To indicate achievement of these goals, they are linked to the basic needs of learning: competence, relatedness and autonomy. A total of thirty six students played the serious game in two different sessions. At the end of each session, a survey is collected for game based learning assessment. Results suggest that the serious game has a positive impact on student engagement, cooperation, and helps transfer course contents.", "corpus_id": 51988132, "venue": "", "year": 2017, "author_names": [ "Alberto Martinetti", "J E Parada Puig", "Charlotte Oude Alink", "Jos P Thalen", "Leo A M van Dongen" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "24280439", "title": "Gamification of peer assessment in learning management system", "abstract": "Teachers today spend a lot of time grading students' work. Yet many times students feel under appreciated and they lack understanding of the grading criteria, which leads to no improvement of their learning through time. This paper presents a perspective on automatic evaluations of students' work with the use of gamified peer assessment. Using peer assessment, students not only learn what was correct and what was incorrect in their work, they also develop assessment skills important in their future. The paper also contains a proposal for a learning management system plug in, which can be used for this purpose.", "corpus_id": 24280439, "venue": "2017 18th International Carpathian Control Conference (ICCC)", "year": 2017, "author_names": [ "Sabin Simionescu", "Dana Sunikova", "Zuzana Kubincova" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "53435494", "title": "Increasing students' motivation by using virtual learning environments based on gamification mechanics: Implementation and evaluation of gamified assignments for students", "abstract": "Increasing students' motivation is an essential task during the educational process. One of the possible ways how to achieve this is to use innovative educational mechanics, such as gamification. Gamification provides an opportunity to extend regular learning management systems and virtual learning environments with game like elements, such as points, levels, and meaningful narrative. This paper describes the implementation and usage of gamified assignments in Web Development. Firstly, we analyzed gamification possibilities in higher educational institutions. After each assignment, we gathered feedback from students to study their involvement, motivation, and influence of gamification on how the information was perceived. Based on the results, several suggestions for the improvement are discussed, such as adaptive variable difficulty or making the achievements public in order to increase social motivational drive influence.", "corpus_id": 53435494, "venue": "TEEM", "year": 2018, "author_names": [ "Olena Pastushenko", "Tomas Hruska", "Jaroslav Zendulka" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "59159170", "title": "An Empirical Investigation on the Benefits of Gamification in Programming Courses", "abstract": "Context: Programming courses are compulsory for most engineering degrees, but students' performance on these courses is often not as good as expected. Programming is difficult for students to learn, given that it includes a lot of new, complex, and abstract topics. All of this has led experts to the conclusion that new teaching techniques are required if students are to be motivated and engaged in learning on programming courses. Gamification has come to be an effective technique in education in general, and is especially useful in programming courses. This motivated us to develop an open source gamified platform, called UDPiler, for use in a programming course. Objective: The main goal of this article is to obtain empirical evidence on the improvement of students' learning performance when using UDPiler in comparison to a non gamified compiler. Method: A quasi experiment was performed with two groups of first year engineering students at Diego Portales University in Chile, using a non gamified compiler and a gamified platform, respectively. Results: The results reveal that the students obtained better marks when the gamified platform was used to learn C programming. In addition, there is statistical significance in favor of there being a positive effect on the learning performance of those students who used the gamified platform. Conclusions: The results allow us to conclude that gamification is an encouraging approach with which to teach C programming, a finding that is aligned with previous empirical studies concerning gamification on programming courses, carried out in academic contexts. Nonetheless, we are aware that further validation is also required to corroborate and strengthen the findings obtained and to investigate whether the kind of gamified elements (mechanics, dynamics, and aesthetics) used have any influence on students' performance, among other issues that deserve further investigation and that are explained throughout this article.", "corpus_id": 59159170, "venue": "ACM Trans. Comput. Educ.", "year": 2019, "author_names": [ "Beatriz Marin", "Jonathan Frez", "Jose A Cruz-Lemus", "Marcela Genero" ], "n_citations": 23, "n_key_citations": 1, "score": 1 }, { "doc_id": "114781569", "title": "Gamification educational process as a tool of efficiency improvement Of learning", "abstract": "", "corpus_id": 114781569, "venue": "", "year": 2016, "author_names": [ "Yu A Mel'nichuk" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "54853487", "title": "FOR GAMIFICATION BASED E LEARNING SYSTEMS FOR HIGHER EDUCATION IN EGYPT", "abstract": "With gamification, design elements known from games can be used in several ways; Businesses have begun to use gamification to enhance profitability, staff have turned work into a game in order to reduce the monotony, serious applications like work and education are being started using mechanisms borrowed from game design, by adding elements from games into non game e learning applications. This study aims to identi how the elements of gamification affect user experience and increase their engagement with registered subjects. Through a dynamic question selection approach based on'the gamification tactics, the real exams of a number of students showed the improvement of their knowledge acquisition by 55% over the traditional examination approaches.", "corpus_id": 54853487, "venue": "", "year": 2018, "author_names": [ "A Hegazy F Maghraby M M Fouad M R Elabnody" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "213904306", "title": "The Interplay between Working Capital Management and a Firm's Financial Performance across the Corporate Life Cycle", "abstract": "The purpose of this study is to examine the impact of working capital management (WCM) and working capital strategy (WCS) on firm's financial performance across different stages of the corporate life cycle (CLC) We use Pakistani non financial listed firms nested in 12 diverse industries over a period of 2005 2014 as the research sample and employ the hierarchical linear mixed (HLM) estimator, which can process multilevel data where observations are not completely independent. The empirical findings reveal that, overall, WCM is negatively associated with firm performance. However, this association is not static across different stages of a firm's life cycle. For example, a negative association is more pronounced at the introduction stage followed by growth and decline stages, whereas WCM does not significantly impact the performance of mature firms. Likewise, WCS also causes varying effects on the financial performance across the CLC. A conservative strategy at the introduction, growth, and decline stages negatively affects firm performance, suggesting that these firms should adopt an aggressive strategy. Nevertheless, management of sample firms did not account for the respective life cycle stage while formulating a WCM strategy, which can seriously compromise their financial sustainability. These findings suggest that firms require customized WCM policies and WCS to attain sustainable financial performance at each stage of firm life cycle. Thus, managers should not overlook the significant role of CLC stages in their financial planning to ensure the sustainable functioning of the enterprise.", "corpus_id": 213904306, "venue": "", "year": 2020, "author_names": [ "Zanxin Wang", "Minhas Akbar", "Ahsan Akbar" ], "n_citations": 24, "n_key_citations": 0, "score": 0 }, { "doc_id": "211336194", "title": "Working capital management: Financial and valuation impacts", "abstract": "Abstract This paper examines the longitudinal impact from 1990 to 2017 of continuous improvement programs and aggressive working capital practices on accounts receivable turnover, inventory turnover, days payables outstanding, and cash conversion cycle. We find statistically significant shifts in the means and in the skew for these variables consistent with stricter financial management and less risk taking in trade credit. The results are strongest in the transportation and communications industry and weakest in financial services. These metrics are associated with equity valuation impacts and with improved profitability as captured by return on invested capital.", "corpus_id": 211336194, "venue": "", "year": 2020, "author_names": [ "Russell P Boisjoly", "Thomas E Conine", "Michael B McDonald" ], "n_citations": 25, "n_key_citations": 1, "score": 0 }, { "doc_id": "203186422", "title": "Working capital management in the Russian automotive industry supply chain", "abstract": "Abstract Companies must successfully finance their supply chains if they are to maintain their competitive advantage. Specifically, asset management in a supply chain is an essential component of improving one's financial stance. This study examines operational working capital management in the Russian automotive supply chain using the transaction cost theory (TCE) perspective. It considers working capital management (WCM) models with financial supply chain analysis using cash conversion cycles (CCC) and return on assets (ROA) as measurements. Companies operating with efficient WCM models are usually the leaders and the most powerful actors in the supply chain. Overall, according to our analysis long accounts payable payment period are prevalent, inventory levels high and CCCs short. Further, the most profitable firms are those that pay their suppliers promptly. The WCM models based on the data of this study may contribute to deliberate strategies and choices regarding the optimal governance structures of supply chains.", "corpus_id": 203186422, "venue": "", "year": 2020, "author_names": [ "Miia Pirttila", "Veli-Matti Virolainen", "Lotta Lind", "Timo Karri" ], "n_citations": 16, "n_key_citations": 0, "score": 0 }, { "doc_id": "229307007", "title": "Working capital management and performance: Evidence from Italian SME's", "abstract": "WCM represents an important aspect of financial management policies and it requires the ability to monitor a firm's current assets and liabilities to meet short term obligations while avoiding excessive investments in shortterm assets. In firms of all sizes, by managing working capital efficiently, companies can reduce their dependence on external capital and use the released resources for other investments, improving the firm financial flexibility. The management of working capital for SMEs, where financial constraints often adversely affect their prospects, is crucial for the survival and success of the company. In this perspective, the aim of this study is to examine the relationship between working capital efficiency and profitability, focusing on SMEs operating in the agri food sector. To achieve this purpose, it was carried out a dataset of 112 Italian SMEs (784 firms/year observations) according to the requirements established under European Commission recommendation 2003/361/EC of 6 May, 2003. To evaluate the working capital management practices of the sample firms, this study uses quantitative analysis. Descriptive statistics, Pearson correlation, and regression analyses were used. The findings highlighted that the working capital cycle is statistically significant but negatively associated with firm profitability.", "corpus_id": 229307007, "venue": "", "year": 2020, "author_names": [ "Luca Sensini" ], "n_citations": 6, "n_key_citations": 1, "score": 0 }, { "doc_id": "216392991", "title": "Impact of working capital management on business profitability: Evidence from the Polish dairy industry", "abstract": "The main purpose of this paper was to examine the causative link between Working Capital Management (WCM) and Return On Assets (ROA) in milk processing companies. Days Sales of Inventory (DSI) Days Sales Outstanding (DSO) Days Payable Outstanding (DPO) and the Cash Conversion Cycle (CCC) were used as WCM metrics. The study was based on micro data for Polish dairy companies from 2008 2017, retrieved from the Emerging Markets Information Service (EMIS) database. Based on panel regression models, it was demonstrated that extending the DSI and CCC had an adverse effect on ROA, whereas extending the DSO and DPO had a beneficial impact on ROA in dairy companies. Such relationships were mostly characteristic of SMEs which form the largest group of businesses in Poland.", "corpus_id": 216392991, "venue": "", "year": 2020, "author_names": [ "Zbigniew Golas" ], "n_citations": 6, "n_key_citations": 0, "score": 1 }, { "doc_id": "216503419", "title": "The mediating role of board size, philanthropy and working capital management between basic corporate governance factors and firm's performance", "abstract": "This study aims to identify the impact of corporate governance on performance of sugar mills. In order to study this relation, a model is constructed in which ownership structure and independent directors are taken as independent variables. Whereas firm performance is analyzed by using proxy variables such as return on asset (ROA) return on equity (ROE) and sales growth. Moreover, size of board, working capital management (WCM) and philanthropy are taken as mediating variables between governance variables and firm performance.,The data of 32 sugar mills listed at Pakistan Stock Exchange for the period of four years (i.e. 2014 2017) is used for this research. Moreover, to investigate the model, generalized least squares statistical method is used to measure the relationship between variables.,The results revealed that there is significant but positive relationship between independent directors and ROA while ownership structure and ROE have significant but negative relationship. Thus, the board of directors should make it sure that all stakeholders and organizations should increase the nonfamily ownership in firms for better corporate performance. Moreover, philanthropy and WCM mediate the relationship between corporate governance and firms' performance.,This research work will be helpful in the corporate governance, and further researchers can conduct their study by considering executive/nonexecutive director and institutional owners as governance variables.,This paper fulfills an identified need to study how Corporate Governance effect the performance of firm.", "corpus_id": 216503419, "venue": "", "year": 2020, "author_names": [ "Muhammad Naeem Shahid", "Aamir Abbas", "Khalid Latif", "Ayesha Attique", "Safwan Khalid" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "216333411", "title": "Assessing working capital management efficiency of Indian manufacturing exporters", "abstract": "The purpose of this paper is to empirically investigate the relationship between working capital management (WCM) efficiency and exogenous variables of the Indian manufacturing sector along with its sub industries that are involved in export activities.,Panel regression (fixed effects) was used on a sample of 563 Indian manufacturing firms involved in export activities, covering a time period from 2008 to 2018.,Industry wise results showed a significant relation of leverage, net fixed asset ratio, profitability, asset turnover ratio, total asset growth rate and productivity with cash conversion cycle (CCC),Firstly, having taken a sample from a developing economy, the results of our study may be generalizable only among developing contexts. Secondly, the time period taken in this study (2008 2018) has witnessed several economic fluctuations such as recession and demonetization which might differ for the firms or countries in normal conditions.,An improved working capital model could advance the firms' performance by reducing the CCC of the firm, thereby creating efficiency in WCM. In addition, the results of this study could be helpful for many stakeholders such as working capital managers, debt holders, investors, financial consultants and others for monitoring the firms.,This study contributes to the existing literature in the relation between WCM efficiency and exogenous variables of the Indian manufacturing firms engaged in the export activities. Moreover, this study is one of the few research studies to investigate this relationship among Indian export firms in different industries, thus filling the gap in similar work done in other countries.", "corpus_id": 216333411, "venue": "", "year": 2020, "author_names": [ "Himanshu Seth", "Saurabh Chadha", "Namita Ruparel", "Puneet Arora", "Satyendra Kumar Sharma" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "216357161", "title": "Impact of working capital management on firm profitability: Empirical study in Vietnam", "abstract": "Article history: Received February 2 2019 Received in revised format February 27 2020 Accepted March 1 2020 Available online March 1 2020 This article studies the impact of working capital management (WCM) on firm profitability (FP) in Vietnam. The study uses the Generalized Least Squares (GLS) regression method using a sample of 5,295 firms (observations) listed on stock market in Vietnam from 2009 to 2018. First, the study found that inventory turnover, average receivables (AR) average payment (AP) cash conversion cycle (CCC) had negative impacts on the firm profitability (FP) However, when we continued using quadratic function, we found that INV, AR, AP and CCC had a non linear relationship (the U curve) with FP. These research results contribute managerial contributions for firms in efficiently using capital when considering its investment policy. by the authors; licensee Growing Science, Canada 20 (c) 20", "corpus_id": 216357161, "venue": "", "year": 2020, "author_names": [ "Nguyen Thi Thanh Phuong", "Dang Ngoc Hung" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "216333503", "title": "Performance, working capital management, and the liability of smallness: A question of opportunity costs?", "abstract": "This article studies the relationship between working capital management and firm operating performance and focuses on the moderating effect of size. We use a large sample of 56,221 small, medium,", "corpus_id": 216333503, "venue": "", "year": 2020, "author_names": [ "Vivien Lefebvre" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "53126926", "title": "Working capital management and profitability of wine firms in France: an empirical analysis", "abstract": "We estimated the impact of cash conversion cycle (CCC) on the return on assets of wine firms in France over the 2003 2014 period. After controlling for factors such as size, growth, tangibility and leverage, we found that CCC had a negative impact on the profitability of French wine firms, suggesting an aggressive working capital management strategy. However, there was no optimal level of CCC allowing firms to maximise their profitability. On the other hand, French wine firms should grant a payment delay to their customers while reducing the delay to sell stocked wines. They should also lengthen the payment delay to their suppliers while considering potential borrowing cost and potential discounts for early payments. A robustness check on two different sub periods shows that the recent global financial crisis had a significant impact on the relationship between working capital management and the profitability of wine firms in France.", "corpus_id": 53126926, "venue": "", "year": 2020, "author_names": [ "Laurent Michel", "Amine Lahiani", "Beysul Aytac", "Thi Hong Van Hoang" ], "n_citations": 3, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "228084508", "title": "Covid 19: FDA panel votes to approve Pfizer BioNTech vaccine", "abstract": "The US Food and Drug Administration's (FDA) independent panel of experts voted on 10 December in favour of emergency use authorisation for the Pfizer BioNTech covid 19 vaccine. The FDA is expected to approve the vaccine within days. Distribution to the states would then begin immediately. Full FDA approval will likely follow. The one day hearing of the Vaccines and Related Biological Products Advisory Committee was broadcast live on YouTube, Twitter, and Facebook. Questions were raised about the safety of the vaccine in people who have had severe allergic reactions and carry an epinephrine injection device, after two allergic reactions were reported in the UK following vaccination.1 Paul Offit, a vaccine expert at the Children's Hospital of Philadelphia, said that \"tens of millions of Americans\" might", "corpus_id": 228084508, "venue": "BMJ", "year": 2020, "author_names": [ "Janice Hopkins Tanne" ], "n_citations": 28, "n_key_citations": 2, "score": 0 }, { "doc_id": "235438837", "title": "High anaphylaxis rates following vaccination with the Pfizer BNT162b2 mRNA vaccine against COVID 19 in Japanese healthcare workers: a secondary analysis of initial post approval safety data", "abstract": "Takanao Hashimoto, PhD* Akihiko Ozaki, MD, PhD, Divya Bhandari, MHS, Toyoaki Sawano, MD, Ranjit Sah, MD and Tetsuya Tanimoto, MD Department of Pharmacy, Sendai City Medical Center, Sendai, Miyagi, Japan, Department of Breast Surgery, Jyoban Hospital of Tokiwa Foundation, Iwaki, Fukushima 972 8322, Japan, Medical Governance Research Institute, Tokyo 108 0074, Japan, Department of Surgery, Jyoban Hospital of Tokiwa Foundation, Iwaki, Fukushima 972 8322, Japan, Tribhuvan University Teaching Hospital, Institute of Medicine, Kathmandu 44600, Nepal and Internal Medicine, Navitas Clinic Kawasaki, Kanagawa 210 0007, Japan", "corpus_id": 235438837, "venue": "Journal of travel medicine", "year": 2021, "author_names": [ "Takanao Hashimoto", "Akihiko Ozaki", "Divya Bhandari", "Toyoaki Sawano", "Ranjit Sah", "Tetsuya Tanimoto" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "231753301", "title": "The BNT162b2 (BioNTech/Pfizer) vaccine had 95% efficacy against COVID 19 =7 days after the 2nd dose", "abstract": "SOURCE CITATION Polack FP, Thomas SJ, Kitchin N, et al. Safety and efficacy of the BNT162b2 mRNA Covid 19 vaccine. N Engl J Med. 2020;383:2603 15. 33301246.", "corpus_id": 231753301, "venue": "Annals of Internal Medicine", "year": 2021, "author_names": [ "Zain Chagla" ], "n_citations": 22, "n_key_citations": 0, "score": 0 }, { "doc_id": "232057950", "title": "First Month of COVID 19 Vaccine Safety Monitoring United States, December 14, 2020 January 13, 2021", "abstract": "Two coronavirus disease 2019 (COVID 19) vaccines are currently authorized for use in the United States. The Food and Drug Administration (FDA) issued Emergency Use Authorization (EUA) for the Pfizer BioNTech COVID 19 vaccine on December 11, 2020, and for the Moderna COVID 19 vaccine on December 18, 2020; each is administered as a 2 dose series. The Advisory Committee on Immunization Practices issued interim recommendations for Pfizer BioNTech and Moderna COVID 19 vaccines on December 12, 2020 (1) and December 19, 2020 (2) respectively; initial doses were recommended for health care personnel and long term care facility (LTCF) residents (3) Safety monitoring for these vaccines has been the most intense and comprehensive in U.S. history, using the Vaccine Adverse Event Reporting System (VAERS) a spontaneous reporting system, and v safe, an active surveillance system, during the initial implementation phases of the COVID 19 national vaccination program (4) CDC conducted descriptive analyses of safety data from the first month of vaccination (December 14, 2020 January 13, 2021) During this period, 13,794,904 vaccine doses were administered, and VAERS received and processed+ 6,994 reports of adverse events after vaccination, including 6,354 (90.8% that were classified as nonserious and 640 (9.2% as serious.SS The symptoms most frequently reported to VAERS were headache (22.4% fatigue (16.5% and dizziness (16.5% A total of 113 deaths were reported to VAERS, including 78 (65% among LTCF residents; available information from death certificates, autopsy reports, medical records, and clinical descriptions from VAERS reports and health care providers did not suggest any causal relationship between COVID 19 vaccination and death. Rare cases of anaphylaxis after receipt of both vaccines were reported (4.5 reported cases per million doses administered) Among persons who received Pfizer BioNTech vaccine, reactions reported to the v safe system were more frequent after receipt of the second dose than after the first. The initial postauthorization safety profiles of the two COVID 19 vaccines in current use did not indicate evidence of unexpected serious adverse events. These data provide reassurance and helpful information regarding what health care providers and vaccine recipients might expect after vaccination.", "corpus_id": 232057950, "venue": "MMWR. Morbidity and mortality weekly report", "year": 2021, "author_names": [ "Julianne M Gee", "Paige L Marquez", "John R Su", "Geoffrey M Calvert", "Ruiling Liu", "Tanya R Myers", "Narayan Nair", "Stacey W Martin", "Thomas A Clark", "Lauri Ellen Markowitz", "Nicole P Lindsey", "Bicheng Zhang", "Charles Licata", "Amelia Jazwa", "Mark J Sotir", "Tom T Shimabukuro" ], "n_citations": 80, "n_key_citations": 2, "score": 0 }, { "doc_id": "233293835", "title": "ATAGI statement on AstraZeneca vaccine in response to new vaccine safety concerns A statement from the Australian Technical Advisory Group on Immunisation (ATAGI) on the AstraZeneca COVID 19 vaccine in response to new vaccine safety concerns", "abstract": "ATAGI recommends that the COVID 19 vaccine by Pfizer (Comirnaty) is preferred over COVID 19 Vaccine AstraZeneca in adults aged under 50 years. This recommendation is based on the increasing risk of severe outcomes from COVID 19 in older adults (and hence a higher benefit from vaccination) and a potentially increased risk of thrombosis with thrombocytopenia following AstraZeneca vaccine in those under 50 years.", "corpus_id": 233293835, "venue": "", "year": 2021, "author_names": [], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "3505081", "title": "Modeling excess zeroes in an integrated analysis of vaccine safety", "abstract": "ABSTRACT In prophylactic vaccine studies in healthy populations, many subjects do not experience a single adverse event (AE) Thus, the number of AEs observed in such clinical trials may be difficult to model because of an excess of zeroes relative to the parametric distributions assumed. To determine which type of modeling provides a better fit for observed AE data, a variety of models were applied to data from an integrated safety database from clinical trials of the meningococcal vaccine MenB FHbp (Trumenba(r) bivalent rLP2086; Pfizer Inc, Philadelphia, PA) MenB FHbp was the first vaccine approved in the United States to prevent meningococcal serogroup B disease in individuals aged 10 to 25 years. Specifically, this report presents an integrated analysis of AEs from 8 randomized controlled trials that compared MenB FHbp to placebo or active controls. The number of AEs occurring from dose one to 30 days after the last dose was analyzed. Six models were compared: standard Poisson and negative binomial models and their corresponding zero inflation and hurdle models. Models were evaluated for their ability to predict the number of AEs and by goodness of fit statistics. Models based on the Poisson distribution were a poor fit. The zero inflated negative binomial model and negative binomial hurdle model provided the closest fit. These results suggest that zero inflated or hurdle models may provide a better fit to AE data from healthy populations compared with conventional parametric models.", "corpus_id": 3505081, "venue": "Human vaccines immunotherapeutics", "year": 2018, "author_names": [ "Roger Maansson", "David R Radley", "Qin Jiang", "Johannes Beeslaar", "Scott D Patterson", "Judith Absalon", "John L Perez" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "235462308", "title": "Communicating with patients and the public about COVID 19 vaccine safety: recommendations from the Collaboration on Social Science and Immunisation", "abstract": "On 8 April 2021, the Australian Technical Advisory Group on Immunisation (ATAGI) made the Pfizer Comirnaty (BNT162b2[mRNA] coronavirus disease 2019 (COVID19) vaccine the preferred vaccine for adults aged under 50 years who have not received a first dose of the COVID19 vaccine AstraZeneca (ChAdOx1S).1 This followed an established causal relationship between the AstraZeneca vaccine and a rare clotting condition named \"thrombosis with thrombocytopenia syndrome\" (TTS).2 This decision has affected the COVID19 vaccine rollout nationally, given Australia's limited vaccine portfolio the AstraZeneca vaccine is the mainstay for Australia's supply with 53.8 million doses secured, mostly through domestic production.3,4 ATAGI's recommendation occurred 7 weeks into a rollout affected by limited global vaccine supply, difficulties in coordination between the Commonwealth and state and territory governments, and intense media attention. With a limited supply of Pfizer vaccine doses available until later in the year, the recommendation imposes a significant delay in the timeframe in which Australians could be protected from COVID19 and an ongoing vulnerability for the coming winter.", "corpus_id": 235462308, "venue": "The Medical journal of Australia", "year": 2021, "author_names": [ "Julie Leask", "Samantha J Carlson", "Katie Attwell", "Katrina K Clark", "Jessica Kaufman", "Catherine Hughes", "Jane E Frawley", "Patrick Cashman", "Holly Seal", "Kerrie E Wiley", "Katarzyna Bolsewicz", "Maryke S Steffens", "Margie Danchin" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "235270420", "title": "Immunogenicity of Pfizer BioNTech COVID 19 vaccine in patients with inborn errors of immunity", "abstract": "Background In mid December 2020, Israel had started a nationwide mass vaccination campaign against COVID 19. In the first few weeks, medical personnel, elderly citizens and patients with chronic diseases were prioritized. As such, patients with primary and secondary immunodeficiencies were encouraged to receive the vaccine. While the efficacy of RNA based COVID 19 vaccines was demonstrated in the general population, little is known about their efficacy and safety in patients with Inborn Errors of Immunity (IEI) Objectives To evaluate the humoral and cellular immune response to COVID 19 vaccine in a cohort of IEI patients. Methods 26 adult patients were enrolled, and plasma and peripheral blood mononuclear cells were collected two weeks following the second dose of Pfizer BioNTech COVID 19 vaccine. Humoral response was evaluated by testing anti SARS CoV 2 Spike (S) Receptor Binding Domain (RBD) and anti Nuclear (N) antibody titers, and evaluation of neutralizing ability by inhibition of RBD:ACE2 binding. Cellular immune response was evaluated by ELISpot, estimating IL2 and IFNg secretion in response to pooled SARS CoV 2 S or M peptides. Results Our cohort included 18 patients with predominantly antibody deficiency, 2 with combined immunodeficiency, 3 with immune dysregulation, and 3 with other genetically defined diagnoses. 22/26 were receiving immunoglobulin replacement therapy. 18/26 developed specific antibody response and 19/26 showed S peptide specific T cell response. None of the patients reported significant adverse events. Conclusion Vaccinating IEI patients is safe, and most patients were able to develop vaccine specific antibody response, S protein specific cellular response or both.", "corpus_id": 235270420, "venue": "Journal of Allergy and Clinical Immunology", "year": 2021, "author_names": [ "David Hagin", "Tal Freund", "Michal Navon", "Tami Halperin", "Dikla Adir", "Rotem Marom", "Inbar Levi", "Shira Benor", "Yifat Alcalay", "Natalia Tarnovitski Freund" ], "n_citations": 21, "n_key_citations": 1, "score": 1 }, { "doc_id": "235378649", "title": "The Israeli study of Pfizer BNT162b2 vaccine in pregnancy: considering maternal and neonatal benefits.", "abstract": "Pregnant patients with COVID 19 are more likely to require intensive care and die compared with non infected pregnant women. While the consequences of COVID 19 disease in pregnancy prompted many health care organizations to support vaccination in pregnancy, vaccine effects for mother and infant remained unclear. In this issue of the JCI, Beharier and Mayo et al. explored maternal and neonatal responses to the Pfizer BNT162b2 SARS CoV 2 mRNA vaccine. The authors examined blood samples from women and cord blood of neonates following childbirth. Samples were stratified into three groups: vaccine recipients, unvaccinated participants with past positive SARS CoV 2 test, and unvaccinated without prior infection. Vaccinated mothers and mothers with previous infection generated and transferred protective IgG antibodies across the placenta. This study provides evidence to support the safety and efficacy of COVID 19 vaccination in pregnancy with protection to the neonate against infection, outlining clear vaccine benefits for both maternal and child health.", "corpus_id": 235378649, "venue": "The Journal of clinical investigation", "year": 2021, "author_names": [ "Irina Burd", "Tomoshige Kino", "James H Segars" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "235334133", "title": "Acute reduction of visual acuity and visual field after Pfizer BioNTech COVID 19 vaccine 2nd dose: a case report", "abstract": "Long term and rare adverse effects of COVID 19 vaccines are unknown. Hence, it is important to report them to improve the safety profile of the vaccines and enhance their use worldwide. Here, we describes a case of acute visual impairment after Pfizer BioNTech vaccine second dose.", "corpus_id": 235334133, "venue": "Inflammation research official journal of the European Histamine Research Society [et al.", "year": 2021, "author_names": [ "Luca Spiro Santovito", "Graziano Pinna" ], "n_citations": 2, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "17749525", "title": "Load balancing in OpenFlow enabled switches for wireless access traffic aggregation", "abstract": "The immense development in mobile devices and the proliferation of ubiquitous cloud based services have led to a surge in the utilization of remote data centers. These dramatic advances in wireless based services induce a huge traffic flow within the network. However, consequent high load on the network devices may lead to faults and thus an adverse decrease in the user experience. On the other hand, balancing the aggregated multi flow traffic on ports of network switches is a challenging issue. This work presents a load balancing algorithm implemented in OpenDaylight controller for managing the load on the switch ports by utilizing Software Defined Networking (SDN) architecture. The switch acts a connector which aggregates traffic from wireless access nodes. An experiment design is constructed with hardware based OpenFlow enabled switch and connected wireless hosts. According to the load on the ports, the developed scheme dynamically load balances the incoming traffic towards the backhaul connection. It uses OpenFlow for gathering statistics and flow rule installation on the switch in an adaptive manner.", "corpus_id": 17749525, "venue": "NOMS 2016 2016 IEEE/IFIP Network Operations and Management Symposium", "year": 2016, "author_names": [ "Hakan Selvi", "Engin Zeydan", "Gurkan Gur", "Fatih Alagoz" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "34066339", "title": "A distributed framework for network wide traffic monitoring and platoon information aggregation using V2V communications", "abstract": "Abstract This study explores an innovative framework for distributed traffic monitoring and information aggregation using vehicle to vehicle (V2V) communications alone. We envision the proposed framework as the foundation to an alternative or supplemental traffic operation and management system, which could be particularly helpful under abnormal traffic conditions caused by unforeseen disasters and special events. Each equipped vehicle, through the distributed protocols developed, keeps track of the average traffic density and speed within a certain range, flags itself as micro discontinuity in traffic if appropriate, and cross checks its flag status with its immediate up and down stream vehicles. The micro discontinuity flags define vehicle groups with similar traffic states, for initiating and terminating traffic information aggregation. The framework is validated using a microscopic traffic simulation platform VISSIM and its built in component object model. Vehicle groups are successfully identified and their average speed and density effectively estimated. The impact of market penetration rate (MPR) is also investigated with a new methodology for performance evaluation under multiple traffic scenarios. Our simulation results show that the proposed framework lends itself better to more congested traffic conditions for any given MPR. With 50% MPR, the framework is able to provide information coverage for at least 37.76% of the simulated roadway facility under various traffic scenarios. This indicates that proposed framework could be useful with an MPR as low as 50% Even with an MRP of 20% the coverage ratio, under relatively congested traffic, can still reach around 58.82% The framework is able to provide accurate speed estimation at high spatial resolution for the simulated roadway facility. The maximum relative error is under 10% for relatively congested traffic even with MPR as low as 20% When there is a wider range of speed distribution (less congested traffic) the worst case maximum relative error is still under 15% when MPR 20 The density estimation is more sensitive to MPR, and is more accurate under low demand and high MPR scenarios. As expected, the accuracy of both speed and density estimation increases with MPR for any given traffic scenario.", "corpus_id": 34066339, "venue": "", "year": 2016, "author_names": [ "Yingyan Lou", "Peiheng Li", "Xiaoyan Hong" ], "n_citations": 9, "n_key_citations": 1, "score": 1 }, { "doc_id": "212636481", "title": "An LTE WiFi Spectrum Aggregation System for 5G Network: A Testbed", "abstract": "Nowadays, the continuous increase in the high data traffic demand and providing the different quality of services (QOS) to the customer is a very challenging task for all network operators. In the last few years, mobile data traffic is increased to a significant extent. To overcome the increasing traffic demand WiFi offloading is the best option to reduce the burden of cellular networks. So, by aggregating existing indoor WiFi technology to the cellular network is increased the network capacity and provides better QoS to customers. In this article, we proposed and implement the LTE WiFi aggregation system which is very similar to the 3GPP LWA system. Furthermore, the proposed system is integrated with the M CORD platform which is SDN, NFV, and cloud based open source solutions for providing a 5G environment. The implementation of the proposed system is based on the OpenAirInterface OAI software defined radio (SDR) platform where WLAN AP is directly connected to eNodeB. The aggregation of both technologies is done at the PDCP layer. Moreover, we test our proposed system with three kinds of policies for UDP and TCP traffic known as LTE only, WiFi only and LTE WiFi aggregated. The experimental result shows that our proposed LTE WiFi aggregated system gives better performance and provides high bandwidth as compared to single LTE.", "corpus_id": 212636481, "venue": "2020 International Conference on Information Networking (ICOIN)", "year": 2020, "author_names": [ "Khizar Abbas", "Talha Ahmed Khan", "Adeel Rafiq", "Wang-Cheol Song", "Seung-Joon Seok" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "110116537", "title": "Integration of a cell transmission model and macroscopic fundamental diagram: Network aggregation for dynamic traffic models", "abstract": "Network size can have a significant impact on the computational performance of traffic simulation models. Due to this, methods to reduce network size can be valuable when analyzing large networks. In this research, a novel model integrating a Cell Transmission Model (CTM) with the Macroscopic Fundamental Diagram (MFD) for urban networks is proposed and its effects analyzed. The concept that underlies this work is that a road network can be classified into two types of networks: the first includes roads that are modeled using CTM, and the second are components of the network that can be aggregated into large self contained cells that also maintain properties of the MFD. To test the proposed model and its computational efficiency, a case study involving an evacuation is introduced. The network and its demand, built from the Southeast Louisiana Hurricane Katrina evacuation event, were modeled using a combination of CTM and MFD. The spatio temporal profiles of volume and speeds on key routes and destinations from the proposed model were compared to observed data from the event. The results suggest that the model was able to realistically capture the observed shock wave phenomena, and reproduce the spatio temporal characteristics of the evacuation traffic. This simple methodology has considerable potential to improve computational efficiency in dynamic traffic assignment models, particularly for those large scale networks and processes, while ensuring that the traffic dynamics are realistically modeled.", "corpus_id": 110116537, "venue": "", "year": 2015, "author_names": [ "Zhao Zhang", "Brian Wolshon", "Vinayak V Dixit" ], "n_citations": 35, "n_key_citations": 0, "score": 1 }, { "doc_id": "67789222", "title": "Short term traffic flow prediction in smart multimedia system for Internet of Vehicles based on deep belief network", "abstract": "Abstract In the multimedia system for Internet of Vehicles (IoVs) accurate traffic flow information processing and feedback can give drivers guidance. In traditional information processing for IoVs, few researches deal with traffic flow information processing by deep learning. Specially, most of the existing prediction technologies adopt shallow neural network, and their models for chaotic time series are prone to be restricted by multiple parameters. Over the last few years, the dawning of the big data era creates opportunities for the intelligent traffic control and management. In this paper, we take Restricted Boltzmann Machine (RBM) as the method for traffic flow prediction, which is a typical algorithm based on deep learning architecture. Considering traffic big data aggregation in IoVs, multimedia technologies provide enough real sample data for model training. RBM constructs the long term model of polymorphic for chaotic time series, using phase space reconstruction to recognize the data. To the best of our knowledge, it is the first time apply RBM model to short term traffic flow prediction, which can improve the performance of multimedia system in IoVs. Moreover, experimental results show that the proposed method has superior performance than traditional shallow neural network prediction methods.", "corpus_id": 67789222, "venue": "Future Gener. Comput. Syst.", "year": 2019, "author_names": [ "Fanhui Kong", "Jun Yu Li", "Bin Jiang", "Houbing Song" ], "n_citations": 28, "n_key_citations": 1, "score": 1 }, { "doc_id": "154158225", "title": "Assessing the Demand Vulnerability of Equilibrium Traffic Networks via Network Aggregation", "abstract": "Studies of network vulnerability mostly focus on changes to the supply side; whether considering a degradation of link capacity or complete link failure. However, the level of service provided by a transport network is also vulnerable to increases in travel demand, with the consequent congestion causing additional delays. Traffic equilibrium models can be used to evaluate the influence of travel demand on level of service when interest is restricted to only a small number of pre specified demand scenarios. A demand vulnerability analysis requires understanding the impact of unknown future changes to any possible combination of OD demands. For anything but the smallest networks, this cannot be accomplished by re computing network equilibrium at all possible demand settings. We require a representation of the functional relationship between demands and levels of service, avoiding the need to re evaluate the equilibrium model. This process of collapsing the demand and network representations onto a single, coarse level network with explicit functional relationships is referred to here as 'network aggregation' We present an efficient method for network aggregation for networks operating under Stochastic User Equilibrium (SUE) In numerical experiments, we explore the nature and extent of the aggregation errors that may arise.", "corpus_id": 154158225, "venue": "", "year": 2015, "author_names": [ "Richard Dominic Connors", "David Paul Watling" ], "n_citations": 19, "n_key_citations": 0, "score": 1 }, { "doc_id": "17848456", "title": "Research on Aggregation and Propagation of Self Similar Traffic in Satellite Network", "abstract": "It has already been confirmed that the traffic in high speed terrestrial network presents self similarity, but there is little research on self similarity of traffic in satellite network. Considering time varying network topology and link status, this paper analyzes the aggregation and propagation of self similar traffic between nodes in satellite network. Furthermore, a sort of special network node called ground gateway is modeled, based on which the characteristics of the output traffic that the input traffic from terrestrial network passes gateway into satellite network are analyzed. Theoretically analyses demonstrate that after aggregation and propagation between satellite nodes, traffic is still self similar, and the self similarity of the output traffic generated by gateway from terrestrial network to satellite network is more often than not weakened.", "corpus_id": 17848456, "venue": "", "year": 2015, "author_names": [ "Zhenyu Na", "Yi Liu", "Yang Cui", "Qing Guo" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "24618922", "title": "Traffic Aggregation Techniques for Environmental Monitoring in M2M Capillary Networks", "abstract": "In this paper, we address the problem of traffic aggregation in capillary M2M networks. In particular, we focus on monitoring application where sensor nodes gather information from the environment (e.g. temperature, humidity, concentration of pollutants, etc) and send it to the gateway (GW) The GW then processes and retransmits the data through a cellular network to a distant application server. In an attempt to reduce the traffic congestion in the cellular network, we propose a data compression strategy at the GW that effectively exploits the temporal and spatial correlation in the sensors observations. The data compression strategy is composed of two building blocks: an estimation block and a compression block. In the estimation block, the data streams are jointly processed by means of a multidimensional linear filter. Next, the output streams of the estimation block are compressed by resorting to a truncated version its Karhunen Loeve expansion.", "corpus_id": 24618922, "venue": "2013 IEEE 77th Vehicular Technology Conference (VTC Spring)", "year": 2013, "author_names": [ "Javier Matamoros", "Carles Anton-Haro" ], "n_citations": 5, "n_key_citations": 1, "score": 1 }, { "doc_id": "24560887", "title": "QoS Aware Adaptive A MPDU Aggregation Scheduler for Voice Traffic in Aggregation Enabled High Throughput WLANs", "abstract": "Currently available IEEE 802.11n implementations do not apply aggregate MAC protocol data unit (A MPDU) aggregation to voice traffic because of its strict end to end delay requirements. When multiple nodes contend to send voice and other lower priority traffic, 802.11n network faces serious performance degradation problems for two major reasons: i) due to the medium access control (MAC) and physical (PHY) layer overheads of individual short voice packet transmissions, the available network throughput for lower priority traffic significantly decreases, and ii) increased contention results in high voice packet loss rate (PLR) This paper proposes a QoS aware adaptive A MPDU aggregation scheduler for voice traffic in 802.11n/ac WLANs that adaptively applies A MPDU aggregation to voice traffic based on QoS requirements and periodically obtained average medium access delay and end to end delay statistics. Performance evaluations on 20 nodes sending uplink 64Kbps voice and saturated best effort traffic at 150Mbps PHY rate showed that the proposed scheme achieved 160% throughput improvement compared to default implementations in driver. During the simulations with 50 nodes transmitting at 600Mbps PHY rate, the proposed scheme provided up to 275Mbps throughput against 0.13Mbps by default scheme; the proposed scheme delivered all voice packets (PLR 0 percent) and over 99.9 percent of them had less than 150ms end to end delay.", "corpus_id": 24560887, "venue": "IEEE Transactions on Mobile Computing", "year": 2017, "author_names": [ "Shinnazar Seytnazarov", "Youngtak Kim" ], "n_citations": 16, "n_key_citations": 2, "score": 1 }, { "doc_id": "6062004", "title": "Performance quality evaluation with VoIP traffic aggregation in Mobile Ad Hoc Networks", "abstract": "VoIP traffic over Mobile Ad Hoc Networks (MANETs) faces many interacting challenges such as the mobility of the nodes that leads to continuous link breakages, the restricted bandwidth availability, the different characteristics of the existing routing protocols, the used voice codecs, the number of the mobile nodes and the background traffic. These factors introduce variability in the latency and the packet loss rate, which in turn severely affects the voice quality that is closely related to the voice codecs used by the VoIP network. This paper examines the effects of these factors to the quality of the VoIP traffic over a MANET via extensive simulations. It also presents ways to improve the performance, based either on the routing layer or on the application layer with the aggregation of multiple voice payloads to a single packet. This aggregation significantly improves the performance of the G.711 codec, while the impact to the other codecs is negligible.", "corpus_id": 6062004, "venue": "2013 IEEE 14th International Symposium on \"A World of Wireless, Mobile and Multimedia Networks\" (WoWMoM)", "year": 2013, "author_names": [ "Charalampos Mysirlidis", "Panagiotis Galiotos", "Tasos Dagiuklas", "Stavros A Kotsopoulos" ], "n_citations": 5, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "164331878", "title": "Peripartum Chest Pain Should Prompt Cardiac Evaluation [23E]", "abstract": "", "corpus_id": 164331878, "venue": "Obstetrics Gynecology", "year": 2019, "author_names": [ "Abida Hasan", "Michael C Hill", "Malek G Massad", "Adhir R Shroff", "Laura M Digiovanni", "Joan E Briller" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "212740822", "title": "Pulmonary thromboembolism presenting with chest pain in a case of peripartum cardiomyopathy.", "abstract": "Peripartum cardiomyopathy (PPCM) is an idiopathic reduction in left ventricular function, presenting at the peripartum period. The diagnosis is based on echocardiographic features and excluding other causes of heart failure. Similar to any other cause of heart failure, the management of PPCM consists of diuretics, prevention of ventricular remodeling, preventing short and long term complications. Ventricular clots, transient cerebral ischemic attacks, lower extremity thrombosis, kidney and liver infarcts and pulmonary thromboembolism have been previously reported in PPCM cases. Among them, pulmonary thromboembolism is one of the most important complications, as it is also a challenging differential diagnosis of PPCM. We discuss a case of PPCM followed by a diagnosis of pulmonary thromboembolism and briefly review the relevant PPCM literature.", "corpus_id": 212740822, "venue": "Future cardiology", "year": 2020, "author_names": [ "Elham Mahmoudi", "Mohammadreza Tabary", "Isa Khaheshi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "3453609", "title": "Pregnancy associated spontaneous coronary artery dissection (PASCAD) An etiology for chest pain in the young peripartum patient.", "abstract": "Cardiac emergencies in pregnancy and the postpartum period are rare but often life threatening. An emergency physician's differential diagnosis for chest pain in the peripartum patient often includes serious etiologies such as pulmonary embolism or myocardial infarction (MI) A lesser known but important consideration on the differential for MI is that of a spontaneous coronary artery dissection (SCAD) SCAD is defined as an intramural hematoma within the coronary artery that compresses the true lumen. Expansion by increased pressures may lead to subsequent myocardial ischemia and infarction. This condition is the most common cause of pregnancy associated MI and is reported as the cause of MI in 24% to 35% of all women younger than 50 years. This condition is predominately seen in young healthy females with no traditional risk factors for coronary artery or cardiac disease, and typically in the postpartum period. SCAD in the peripartum period is defined as pregnancy associated spontaneous coronary artery dissection (PASCAD) Abnormal ECG changes, elevated troponins, and regional wall motional abnormalities on echocardiography are all diagnostic findings of SCAD, which can be ultimately confirmed with coronary angiography. Failure to immediately address this condition can lead to acute heart failure, cardiogenic shock, and death. Thrombolytic treatment may be harmful and is not recommended, and percutaneous coronary intervention can result in the iatrogenic propagation of further coronary dissection. As a result, the management for suspected SCAD involves emphasis on urgent transfer and urgent coronary artery angiography to determine appropriate treatment modalities.", "corpus_id": 3453609, "venue": "CJEM", "year": 2018, "author_names": [ "Richard J Lee", "David Carr" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "2934096", "title": "Peripartum cardiac chest pain and troponin rise.", "abstract": "The incidence of myocardial ischaemia is increasing in the obstetric population. This has been attributed to several factors including greater maternal age, the increasing incidence of obesity and diabetes, and the growing population of patients with grown up congenital heart disease who now reach adulthood and become pregnant. A number of cases of myocardial ischaemia in pregnant women have been documented, during and after delivery, for which no cause has been established. We present a case of a nulliparous woman who developed cardiac chest pain, bradycardia, hypertension and a raised troponin I after vaginal delivery of twin boys at 36 weeks of gestation. Ischaemic electrocardiogram changes were noted. Detailed investigations demonstrated a normal coronary circulation. A patent foramen ovale was found on bubble echocardiography.", "corpus_id": 2934096, "venue": "International journal of obstetric anesthesia", "year": 2010, "author_names": [ "K Tatham", "Ynyr Hughes-Roberts", "Scott F Davies", "M Johnson", "K J Ashpole", "Megan Cox" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "8845882", "title": "Symptoms Chest pain Chest and left axillary pain Chest pain Not known Chest pain Chest and jaw pain Cardiac arrest Chest pain Chest pain Midsternal chest pain", "abstract": "S pontaneous coronary artery dissection (SCAD) is a nonatherosclerotic disease of the coronary arteries and usually presents as acute coronary syndrome.1,2 The pathogenesis of SCAD involves development of a dissection plane within the coronary artery wall with concurrent intramural hematoma and/or intimal flap, ultimately obstructing flow and causing myocardial ischemia and infarction. Spontaneous coronary artery dissection was previously considered rare, with only individual cases and small case series published.3 5 However, the advent of dedicated online SCAD patient communities and social media communication has led to increased awareness of the condition and robust patient initiated research activity. More recent studies6,7 with advanced intracoronary imaging suggest that 1% to 4% of patients with acute coronary syndrome may have SCAD. More importantly, SCAD may be responsible for one third of the acute coronary syndromes in females younger than 50 years and is the most common cause of peripartum myocardial infarction.6 9 The emerging recognition that both the treatment and outcomes of SCAD differ from those of acute coronary syndrome caused by atherosclerosis1,10,11 highlights the need to increase awareness and diagnostic acumen among health care professionals. Spontaneous coronary artery dissection occurs most commonly in young women with no or minimal cardiovascular risk factors. The exact pathophysiologic mechanisms associated with SCAD are unclear, but associations with the peripartum period, extreme exercise or emotion, connective tissue disorders, and fibromuscular dysplasia have been reported.1,2,12 Because the estimated 10 year incidence of major adverse cardiovascular events, including death, recurrent SCAD, heart failure, and myocardial infarction after initial SCAD, is high (47%,1 identification of novel risk factors is critical. To our knowledge, the significance of family history in SCAD has not been previously reported.", "corpus_id": 8845882, "venue": "", "year": 2015, "author_names": [ "Kashish Goel", "Marysia S Tweet", "Timothy M Olson", "Joseph J Maleszewski", "Rajiv Gulati", "Sharonne N Hayes" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "30264343", "title": "A rare cause of postpartum chest pain.", "abstract": "We report the case of a 45 year old postpartum female at low risk for coronary artery disease (CAD) who presented with chest pain, a normal electrocardiogram (ECG) and elevation of serial troponin T levels. Coronary angiography revealed dissection of the first obtuse marginal branch of the left circumflex coronary artery. The patient was treated medically and discharged home safely. Spontaneous coronary artery dissection (SCAD) is a rare condition. In the absence of CAD, it is seen most frequently in young females during the peripartum period. Insult from the hemodynamic stresses during pregnancy and labor combined with the underlying pregnancy related arterial wall changes is the proposed mechanism of dissection in this setting. The normal ECG in the presence of an acute myocardial infarction (AMI) in this case also demonstrates the occasional electrically silent ECG that can occur during acute compromise of the left circumflex coronary artery.", "corpus_id": 30264343, "venue": "The West Virginia medical journal", "year": 2013, "author_names": [ "Sumesh Jain", "Bruce Chen", "Jason A Moreland" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "229400907", "title": "An interesting case of a twin pregnancy complicated with happy hypoxia, peripartum cardiomyopathy and haemolysis, elevated liver enzymes, low platelet count syndrome during the COVID 19 pandemic situation", "abstract": "We are reporting a case of a pregnant woman with twin pregnancy and pregnancy induced hypertension who rapidly progressed to hemolysis elevated liver enzymes (HELLP) syndrome without having proteinuria along with features of peripartum cardiomyopathy and also had low oxygen saturation levels (less than 72% though she did not have any complaints of dyspnea, orthopnea, hemoptysis, chest pain, cough or peripheral oedema. She was tested for COVID 19 with real time polymerase chain reaction (RT PCR) on 2 occasions a week apart and was ABSTRACT", "corpus_id": 229400907, "venue": "", "year": 2020, "author_names": [ "Ramna Banerjee", "Farheen Rahman" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "212668543", "title": "Postpartum psychosis in peripartum cardiomyopathy: a case report", "abstract": "Background This case report highlights the rare occurrence of postpartum psychosis in the setting of peripartum cardiomyopathy, which can have rare presentations like arrhythmias and pulmonary edema; and the challenges one should anticipate while managing these conditions together. Caution is advised whenever antipsychotic drugs are to be administered to a patient with a cardiac condition as these drugs potentially increase the risk of arrhythmias and sudden death. Case presentation A 35 year old grand multiparous woman who was 1 week into puerperium was admitted with severe difficulty in breathing at rest, chest congestion and pain. She also had easy fatigability, orthopnea, paroxysmal nocturnal dyspnea, edema, tachycardia, tachypnea, irregularly irregular heart rate with a pulse deficit, elevated jugular venous pressure, cardiomegaly, hepatomegaly and pulmonary crepitations. On the sixth day while improving on standard drugs for heart failure, she developed bizarre behavior and confusion. She also had auditory, visual and olfactory hallucinations; violence to the baby and the husband; and refusal to feed and take medication. There was no altered sensorium and the vital signs were normal. She was diagnosed with puerperal psychosis during the management of peripartum cardiomyopathy. Conclusion In the rare occurrence of puerperal psychosis in the course of management of peripartum cardiomyopathy one must be acutely aware of the risk of sudden cardiac death occasioned by use of antipsychotics, either directly or due to arrhythmias. Continuous electrocardiogram (ECG) monitoring or use of alternative management modalities is thus highly advised.", "corpus_id": 212668543, "venue": "BMC Psychiatry", "year": 2020, "author_names": [ "Odhiambo Henry Owuor", "James Amisi Akiruga", "Jeremiah Laktabai", "Samuel Ateya", "Salwa Mohamed Omar" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229003637", "title": "Three broken vessels in a peripartum patient: a rare case report of spontaneous triple vessel coronary artery dissection", "abstract": "Abstract Background Spontaneous coronary artery dissection (SCAD) is a frequently underdiagnosed entity that carries a significant risk of morbidity and mortality. Spontaneous coronary artery dissection is increasingly recognized as an important cause of acute coronary syndrome (ACS) and, the majority of SCAD patients are young healthy women. Case summary A 23 year old female G5P4 presented to the emergency room for severe sub sternal chest pain, associated with shortness of breath. Past medical history was significant for pre eclampsia. Initial electrocardiogram was remarkable for ST depressions in V5 V6 with inverted T waves to V1 V2. Troponin I was elevated to 1.13 ng/mL. Two dimensional echo showed reduced left ventricular function with an ejection fraction of 40% Cardiac catheterization showed triple vessel dissection involving the left main trunk extending into mid left anterior descending and dissection extending from ostium of left circumflex artery into large first obtuse marginal branch. She was started on aspirin and heparin. After 48 h she was loaded with clopidogrel. Computed tomography angiography of head, neck, abdomen, and pelvis showed findings compatible with fibromuscular dysplasia. She was haemodynamically stable and symptom free and did not want surgery. She was recommended to continue dual antiplatelet therapy for 12 months and subsequently aspirin and beta blocker only lifelong. Discussion Spontaneous coronary artery dissection is a rare condition which is underdiagnosed. A thorough history and high degree of suspicion is required to diagnose in a timely manner and it should be high on differential in a postpartum female presenting with signs and symptoms of ACS.", "corpus_id": 229003637, "venue": "European heart journal. Case reports", "year": 2020, "author_names": [ "Hassan Mehmood Lak", "Karim Abdul Rehman", "Wael A Jaber", "Leslie Cho" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "218976613", "title": "Recurrent myocardial infarction caused by peripartum left main spontaneous coronary artery dissection, extending to the left anterior descending artery and left circumflex artery.", "abstract": "Spontaneous coronary artery dissection (SCAD) is an important cause of myocardial infarction (MI) in otherwise healthy young and middle aged patients without cardiovascular risk factors. Herein, is reported a multiparous (5 pregnancies, 5 deliveries) 45 year old woman without cardiovascular risk factors who presented to the emergency room, 3 months after her last delivery, for oppressive retrosternal chest pain irradiating in the left arm. Electrocardiogram demonstrated negative T waves from V2 V6, I, II and avL. High sensitivity troponins were elevated at 293 ng/L AE 1345 ng/L. Coronary angiogram demonstrated left main SCAD (type 2) with extension to the distal left anterior descending artery (LAD) and the proximal circumflex artery (LCx) The right coronary artery demonstrated no signs of SCAD (Fig. 1A C) The patient did not present a trigger factor for SCAD. Echocardiography showed moderate left ventricular dysfunction (ejection fraction 45 50% with apical akinesia and infero septal hypokinesia. In the presence of conserved antegrade flow, conservative treatment was performed, and the patient was started on dual antiplatelet therapy by means of acetylsalicylic acid 100 mg/d and clopidogrel 75 mg/d. Heart failure therapy with angiotensin converting enzyme inhibitors and beta blockers was initiated. Forty eight hours after the initial angiogram the patient presented recurrent retrosternal chest pain. Electrocardiogram showed negative T waves from V2 V6, as well as in leads II, III and avF and troponins were elevated at 477 g AE 3775 ng/L, confirming recurrent MI. Repeat coronary angiogram demonstrated the previously seen spontaneous coronary artery dissections (type 2) with progression of the dissection of the circumflex artery to the distal segment of the vessel, associated with occlusion of the distal LCx (Fig. 1D F) In the absence of hemodynamic instability, it was decided to treat the LCx dissection conservatively. Clinical evolution was favourable at 6 month follow up. On echocardiography persistence of apical akinesia was visualized, with a slight left ventricular dysfunction (ejection fraction 50% Control angiogram demonstrated complete healing of the left main, left circumflex artery and left anterior descending artery (Fig. 1G I) Peripartum associated SCAD represent a high risk subset of patients, is associated with high risk clinical presentation and increased cardiovascular morbidity.", "corpus_id": 218976613, "venue": "Cardiology journal", "year": 2020, "author_names": [ "Geraldine Godin", "Juan F Iglesias", "Stephane Noble", "Marco Roffi", "Sophie Degrauwe" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "201115578", "title": "Hate speech detection: Challenges and solutions", "abstract": "As online content continues to grow, so does the spread of hate speech. We identify and examine challenges faced by online automatic approaches for hate speech detection in text. Among these difficulties are subtleties in language, differing definitions on what constitutes hate speech, and limitations of data availability for training and testing of these systems. Furthermore, many recent approaches suffer from an interpretability problem that is, it can be difficult to understand why the systems make the decisions that they do. We propose a multi view SVM approach that achieves near state of the art performance, while being simpler and producing more easily interpretable decisions than neural methods. We also discuss both technical and practical challenges that remain for this task.", "corpus_id": 201115578, "venue": "PloS one", "year": 2019, "author_names": [ "Sean MacAvaney", "Hao-Ren Yao", "Eugene Yang", "Katina Russell", "Nazli Goharian", "Ophir Frieder" ], "n_citations": 109, "n_key_citations": 7, "score": 1 }, { "doc_id": "221593938", "title": "Hate and Toxic Speech Detection in the Context of Covid 19 Pandemic using XAI: Ongoing Applied Research", "abstract": "As social distancing, self quarantines, and travel restrictions have shifted a lot of pandemic conversations to social media so does the spread of hate speech. While recent machine learning solutions for automated hate and offensive speech identification are available on Twitter, there are issues with their interpretability. We propose a novel use of learned feature importance which improves upon the performance of prior state of the art text classification techniques, while producing more easily interpretable decisions. We also discuss both technical and practical challenges that remain for this task.", "corpus_id": 221593938, "venue": "NLP4COVID@EMNLP", "year": 2020, "author_names": [ "David Hardage", "Peyman Najafirad" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "203951907", "title": "Exploring Hate Speech Detection in Multimodal Publications", "abstract": "In this work we target the problem of hate speech detection in multimodal publications formed by a text and an image. We gather and annotate a large scale dataset from Twitter, MMHS150K, and propose different models that jointly analyze textual and visual information for hate speech detection, comparing them with unimodal detection. We provide quantitative and qualitative results and analyze the challenges of the proposed task. We find that, even though images are useful for the hate speech detection task, current multimodal models cannot outperform models analyzing only text. We discuss why and open the field and the dataset for further research.", "corpus_id": 203951907, "venue": "2020 IEEE Winter Conference on Applications of Computer Vision (WACV)", "year": 2020, "author_names": [ "Raul Gomez", "Jaume Gibert", "Lluis Gomez", "Dimosthenis Karatzas" ], "n_citations": 51, "n_key_citations": 7, "score": 0 }, { "doc_id": "231942329", "title": "Towards generalisable hate speech detection: a review on obstacles and solutions", "abstract": "Hate speech is one type of harmful online content which directly attacks or promotes hate towards a group or an individual member based on their actual or perceived aspects of identity, such as ethnicity, religion, and sexual orientation. With online hate speech on the rise, its automatic detection as a natural language processing task is gaining increasing interest. However, it is only recently that it has been shown that existing models generalise poorly to unseen data. This survey paper attempts to summarise how generalisable existing hate speech detection models are and the reasons why hate speech models struggle to generalise, sums up existing attempts at addressing the main obstacles, and then proposes directions of future research to improve generalisation in hate speech detection.", "corpus_id": 231942329, "venue": "PeerJ Comput. Sci.", "year": 2021, "author_names": [ "Wenjie Yin", "Arkaitz Zubiaga" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "232163649", "title": "Challenges of Hate Speech Detection in Social Media", "abstract": "The detection of hate speech in social media is a crucial task. The uncontrolled spread of hate has the potential to gravely damage our society, and severely harm marginalized people or groups. A major arena for spreading hate speech online is social media. This significantly contributes to the difficulty of automatic detection, as social media posts include paralinguistic signals (e.g. emoticons, and hashtags) and their linguistic content contains plenty of poorly written text. Another difficulty is presented by the context dependent nature of the task, and the lack of consensus on what constitutes as hate speech, which makes the task difficult even for humans. This makes the task of creating large labeled corpora difficult, and resource consuming. The problem posed by ungrammatical text has been largely mitigated by the recent emergence of deep neural network (DNN) architectures that have the capacity to efficiently learn various features. For this reason, we proposed a deep natural language processing (NLP) model combining convolutional and recurrent layers for the automatic detection of hate speech in social media data. We have applied our model on the HASOC2019 corpus, and attained a macro F1 score of 0.63 in hate speech detection on the test set of HASOC. The capacity of DNNs for efficient learning, however, also means an increased risk of overfitting. Particularly, with limited training data available (as was the case for HASOC) For this reason, we investigated different methods for expanding resources used. We have explored various opportunities, such as leveraging unlabeled data, similarly labeled corpora, as well as the use of novel models. Our results showed that by doing so, it was possible to significantly increase the classification score attained.", "corpus_id": 232163649, "venue": "SN Comput. Sci.", "year": 2021, "author_names": [ "Gyorgy Kovacs", "Pedro Alonso", "Rajkumar Saini" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "230997317", "title": "A GA Based Approach to Fine Tuning BERT for Hate Speech Detection", "abstract": "There exists a high level of variance in the finetuning of contextual word embedding models like Bi directional Encoder Representation for Transformers (BERT) Such variance can be introduced by various factors, such as the BERT encoder layers, the fine tuning architecture or the hyperparameter settings. Each architectural design choice leads to different results for a specific task. Hence, we are interested in reducing this variance given some settings. This study illustrates the use of a Genetic Algorithm (GA) to search, select and design a (near optimal fine tuned BERT architecture for a hate speech detection task. We propose an appropriate encoding scheme for this task which represents the possible solutions in a way that supports a less time consuming search for the global optima. Each encoding for a single solution represents both the BERT architecture and the fine tuning architecture for a robust search. The automatic search provided by the GA, helps to reduce the time and cost involved in manual trial and error design methods. The experiments show that the resulting architectural design and hyperparameter settings are good choices for the hate speech detection task. Our method, although validated only on hate speech detection tasks, can easily be extended and generalized to other text classification tasks.", "corpus_id": 230997317, "venue": "2020 IEEE Symposium Series on Computational Intelligence (SSCI)", "year": 2020, "author_names": [ "Kosisochukwu Judith Madukwe", "Xiaoying Gao", "Bing Xue" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "227230687", "title": "Hate Speech Detection in Saudi Twittersphere: A Deep Learning Approach", "abstract": "With the rise of hate speech phenomena in Twittersphere, significant research efforts have been undertaken to provide automatic solutions for detecting hate speech, varying from simple machine learning models to more complex deep neural network models. Despite that, research works investigating hate speech problem in Arabic are still limited. This paper, therefore, aims to investigate several neural network models based on Convolutional Neural Network (CNN) and Recurrent Neural Networks (RNN) to detect hate speech in Arabic tweets. It also evaluates the recent language representation model BERT on the task of Arabic hate speech detection. To conduct our experiments, we firstly built a new hate speech dataset that contains 9,316 annotated tweets. Then, we conducted a set of experiments on two datasets to evaluate four models: CNN, GRU, CNN+GRU and BERT. Our experimental results on our dataset and an out domain dataset show that CNN model gives the best performance with an F1 score of 0.79 and AUROC", "corpus_id": 227230687, "venue": "WANLP", "year": 2020, "author_names": [ "Raghad Alshaalan", "Hend Al-Khalifa" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "219088701", "title": "HATE SPEECH DETECTION", "abstract": "As online content continues to grow, so does the spread of hate speech. We identify and examine challenges faced by online automatic approaches for hate speech detection in text. The increasing propagation on social media and the urgent need for effective countermeasures have drawn significant investment from governments, companies, and researchers. Machine Learning and predictive analytics now help companies to focus on important areas, anticipating problems before they happen, reducing costs, and increasing revenue.", "corpus_id": 219088701, "venue": "", "year": 2020, "author_names": [ "Sonam Singh", "Shivani Shinde", "Subodh Nikumbh", "Dhiraj Amin" ], "n_citations": 3, "n_key_citations": 2, "score": 0 }, { "doc_id": "235307529", "title": "Hate Speech Detection Using Genetic Programming", "abstract": "There has been a steep increase in the use of social media in our everyday lives in recent years. Along with this, there has been an increase in hate speech disseminated on these platforms, due to the anonymity of the users as well as the ease of use. Social media platforms need to filter and prevent the spread of hate speech to protect their users and society. Due to the high traffic, automatic detection of hate speech is necessary. Hate speech detection is one of the most difficult classification challenges in text mining. Research in this domain focuses on the use of supervised machine learning approaches, such as support vector machine, logistic regression, convolutional neural network, and random forest. Ensemble techniques have also been employed. However, the performance of these approaches has not yet reached an acceptable level. In this paper, we propose the use of the Genetic Programming (GP) approach for binary classification of hate speech on social media platforms. Each individual in the GP framework represents a classifier that is evolved to optimize Fl score. Experimental results show the effectiveness of our GP approach; the proposed approach outperforms the state of the art using the same dataset HatEval.", "corpus_id": 235307529, "venue": "2020 International Conference on Advanced Science and Engineering (ICOASE)", "year": 2020, "author_names": [ "Mona Khalifa A Aljero", "Nazife Dimililer" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "230575010", "title": "A Systematic Literature Review of Different Machine Learning Methods on Hate Speech Detection", "abstract": "Hate speech is one of the most challenging problem internet is facing today. This systematic literature review examine hate speech detection problem and will be used to do an experimental approach on detecting hate speech and abusive language. This work also provide an overview of previous research, including methods, algorithms, and main features used. We use two research questions in this literature review which will be the foundation of the next experimental research. Correctly classifying a piece of text as an actual hate speech requires a lot of correctly labelled data. Most common challenges are different languages, out of vocabulary words, long range dependencies and many more.", "corpus_id": 230575010, "venue": "", "year": 2020, "author_names": [ "Calvin Erico Rudy Salim", "Derwin Suhartono" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "224917630", "title": "UV irradiation assisted cross linking of high molecular weight poly (ethylene oxide) with poly (ethylene glycol) diacrylate to prepare CO2 selective membranes", "abstract": "Abstract In this work, the high molecular weight poly (ethylene oxide) (PEO) was cross linked under UV irradiation to decrease its crystallinity in order to prepare a high performance CO2 selective membrane. Poly (ethylene glycol) diacrylate (PEGDA) containing CO2 philic ether oxygen group was used as both photo initiator and cross linking agent. It was found that the crystallinity degree from 82.4% for the neat PEO membrane decreased to 65.4% for the cross linked PEO membrane by the proposed cross linking technique. The observations indicated that the structural and gas separation properties of the cross linked PEO membranes strongly depend on the PEGDA concentration and UV irradiation time. When the PEGDA concentration was between 3 and 7 %wt and at UV irradiation time of 30 min, the prepared membrane overcame Robeson upper bound and indicated a fairly good separation performance in the case of CO2 separation from N2, compared to the similar cross linked PEG based membranes in the literature.", "corpus_id": 224917630, "venue": "", "year": 2020, "author_names": [ "Fereshteh Motahari", "Ahmadreza Raisi" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "216169214", "title": "UV Cross Linked Poly(ethylene glycol) Based Membranes with Different Fractional Free Volumes for CO2 Capture: Synthesis, Characterization, and Thiol ene Modification Evaluation", "abstract": "CO2 separation is of paramount importance in CO2 capture from flue gas and natural gas sweetening. In this paper, the thiol ene UV photopolymerization technique was employed to synthesize improved", "corpus_id": 216169214, "venue": "", "year": 2020, "author_names": [ "Somayeh Norouzbahari", "Reza Gharibi" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "213192360", "title": "Influence of Anion Structure on Thermal, Mechanical and CO2 Solubility Properties of UV Cross Linked Poly(ethylene glycol) Diacrylate Iongels", "abstract": "Iongel based CO2 separation membranes were prepared by fast 1 min) UV initiated polymerization of poly(ethylene glycol) diacrylate (PEGDA) in the presence of different ionic liquids (ILs) with the [C2mim] cation and anions such as [TFSI] [FSI] [C(CN)3] and [B(CN)4] The four ILs were completely miscible with the non ionic PEGDA network. Transparent and free standing iongels containing between 60 and 90 %wt of IL were obtained and characterized by diverse techniques (FTIR, TGA, DSC, DMTA, SEM, CO2 solubility and pure gas permeability) The thermal and mechanical stability of the iongels, as well as CO2 solubility, were found to be strictly dependent on the IL content and the anion's nature. The TGA results indicated that the iongels mostly follow the thermal profile of the respective neat ILs. The DMTA analysis revealed that the iongels based on fluorinated anions have higher storage modulus than those of cyano functionalized anions. Conversely, the PEGDA C(CN)3 iongels presented the highest CO2 solubility values ranging from 72 to 80 mmol/g. Single CO2 permeabilities of 583 29 Barrer and ideal CO2/N2 selectivities of 66 3 were obtained with the PEGDA 70 C(CN)3 iongel membrane. This work demonstrates that the combination of PEGDA with high contents of the best performing ILs is a promising and simple strategy, opening up new possibilities in the design of high performance iongel membranes for CO2 separation.", "corpus_id": 213192360, "venue": "Membranes", "year": 2020, "author_names": [ "Ana P S Martins", "Asier Fdz De Anastro", "Jorge L Olmedo-Martinez", "Ana R Nabais", "Luisa A Neves", "David Mecerreyes", "Liliana C Tome" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "225296467", "title": "Multi responsive poly(amidoamine) initiated dendritic star supramolecular structures containing UV cross linkable coumarin groups for smart drug delivery", "abstract": "Abstract Dendritic star supramolecular structure of poly(amidoamine) g [polystyrene b (2 (dimethylamino)ethyl methacrylate co 11 (4 methyl 2 oxo 2H chromen 7 yl)oxy)undecyl acrylate) (PAMAM g P(St b (DMAEMA co CuA) was synthesized via grafting from atom transfer radical polymerization (ATRP) by using PAMAM initiator as smart drug carrier. This structure consisted of multi responsive unites of hydrophilic PDMAEMA regarding to pH change, temperature, and CO2 gas and the coumarin molecule as photocrosslinking agent. Photocrosslinking agent is efficient for controlling DOX release after dimerization under UV light. The chemical structure of samples was confirmed by proton nuclear magnetic resonance (1H NMR) and their molecular weight was studied by gel permeation chromatography (GPC) The change of hydrophilic length of PDMAEMA and pH media resulted in various morphologies including hollow sphere, snowman and dumbbell like particles. The morphology of supramolecular assemblies was not changed after photocrosslinking, which confirmed the structure stabilization under UV light irradiation of 365 nm. Fluorescence microscopy was confirmed the presence of fluoresce segments in self assembled supramolecular structures. Dynamic light scattering (DLS) indicated that the size of supramolecular assemblies was changed through the response to external stimuli such as pH, temperature, and CO2 gas. The DOX release behavior was investigated in different conditions such as pH, temperature, and after photocrosslinking under UV light of 365 nm.", "corpus_id": 225296467, "venue": "", "year": 2020, "author_names": [ "Bahareh Razavi", "Robab Abbaszadeh", "Mehdi Salami-Kalajahi", "Hossein Roghani-Mamaqani" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "103816760", "title": "Gas permeation properties of a metallic ion cross linked PIM 1 thin film composite membrane supported on a UV cross linked porous substrate", "abstract": "Abstract Metallic ion cross linked polymer of intrinsic microporosity (PIM 1) thin film composite (TFC) membranes supported on an ultraviolet (UV) cross linked porous substrate were fabricated. The UV cross linked porous substrate was prepared via polymerization induced phase separation. The PIM 1 TFC membranes were fabricated via a dip coating procedure. Metallic ion cross linked PIM 1 TFC membranes were fabricated by hydrolyzing the PIM 1 TFC membrane in an alkali solution and then cross linking it in a multivalent metallic ion solution. The pore size and porous structures were evaluated by low temperature N2 adsorption desorption analysis. The membrane structure was investigated by field emission scanning electron microscopy. The effects of heat treatment and pore forming additives on the gas permeance of the UV cross linked porous substrate are reported. The effects of different pre coating treatments on the gas permeance of the metallic ion cross linked PIM 1 TFC membrane are also discussed. The metallic ion cross linked PIM 1 TFC membrane displayed high CO2/N2 selectivity (23) and good CO2 permeance (1058 GPU)", "corpus_id": 103816760, "venue": "", "year": 2018, "author_names": [ "Hongyong Zhao", "Lizhong Feng", "Xiaoli Ding", "Xiaoyao Tan", "Yuzhong Zhang" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "226323998", "title": "Triptycene based and nitrogen rich hyper cross linked polymers (TNHCPs) as efficient CO2 and iodine adsorbent", "abstract": "Abstract Triptycene based polymeric networks are rapidly emerging as porous organic polymers (POPs) for efficient capture of small gas molecules. Further, such triptycene based frameworks are also being explored as adsorbents for radioactive iodine. Herein, a group of three unique \"Triptycene based and Nitrogen rich Hyper Crosslinked Polymers\" (TNHCPs) have been easily obtained via the well known Friedel Craft alkylation reactions of triptycene with six membered N rich heterocycles. In these TNHCPs, the presence of triptycene motifs yields contorted and rigid polymeric frameworks with plenty of micropores and ultramicropores. Further, the presence of N rich heterocycles increases their efficiency to selectively capture carbon dioxide and adsorb iodine vapours as well as iodide ions from aqueous solutions. Comparison with data in recent literature reveals that TNHCPs are better in these domains than several previously reported POPs in general and HCPs in particular.", "corpus_id": 226323998, "venue": "", "year": 2021, "author_names": [ "Atikur Hassan", "Santu Goswami", "Akhtar W Alam", "Ranajit Bera", "Neeladri Das" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "197196599", "title": "Removal of Heavy Metal Water Pollutants (Co2+ and Ni2+ Using Polyacrylamide/Sodium Montmorillonite (PAM/Na MMT) Nanocomposites", "abstract": "Nanocomposites composed of polyacrylamide and nanoclay were synthesized via free radical cross linking polymerization and used to adsorb Co2+ and Ni2+ ions from water. The polyacrylamide (PAM)/sodium montmorillonite (Na MMT) nanocomposites were characterized by Fourier transform infrared spectroscopy, X ray diffraction, and scanning electron microscopy to confirm the interaction between montmorillonite and the polymer matrix. The effects of pH and heavy metal ion concentration on the adsorption capacity of PAM/Na MMT were evaluated to determine suitable operating conditions for further experiments. Batch adsorption experimental data were fitted to Langmuir and Freundlich models, which provided information about the adsorption mechanism and the adsorbent surface. The highest Ni2+ removal yield was found to be 99.3% using the 2:1 (w/w) nanocomposite at pH 6 in 100 ppm of Ni2+ solution. The Co2+ removal yield was 98.7% at pH 6 in 60 ppm of Co2+ solution using the 4:1 (w/w) nanocomposite. These results were higher than those obtained by polyacrylamide and nanoclay under the same conditions (removal yield between 87.40 and 94.50% indicating that PAM/Na MMT nanocomposites remove heavy metal water pollutants more efficiently and can be used as a novel adsorbent for further industrial applications.", "corpus_id": 197196599, "venue": "ACS omega", "year": 2019, "author_names": [ "Kariana Andrea Moreno-Sader", "Alvaro Garcia-Padilla", "Alvaro Realpe", "Maria Acevedo-Morantes", "Joao B P Soares" ], "n_citations": 21, "n_key_citations": 0, "score": 0 }, { "doc_id": "104432319", "title": "CO2 sourced polycarbonates as solid electrolytes for room temperature operating lithium batteries", "abstract": "In the last few years, polycarbonates have been identified as alternatives to poly(ethylene oxide) as polymer electrolytes for lithium battery applications. In this work, we show the design of CO2 sourced polycarbonates for their use in room temperature operating lithium batteries. Novel functional polycarbonates with alternating oxo carbonate moieties and polyethylene oxide segments are synthesized by the facile room temperature (rt) organocatalyzed polyaddition of CO2 sourced bis(a alkylidene carbonate)s (bis aCCs) with polyethylene oxide diols. The effect of the molar mass of polyethylene oxide on the ionic conductivity and thermal properties of poly(oxo carbonate)s is investigated. The best candidate shows a low glass transition temperature of 44 degC and a high ionic conductivity of 3.75 x 10 5 S cm 1 at rt when loaded with 30 wt% bis(trifluoromethanesulfonyl)imide salt (LiTFSI) without any solvent. An all solid semi interpenetrated network polymer electrolyte (SIN SPE) is then fabricated by UV cross linking of a mixture containing specifically designed poly(oxo carbonate) bearing methacrylate pendants, diethylene glycol diacrylate and the previously described poly(oxo carbonate) containing LiTFSI. The resulting self standing membrane exhibits a high oxidation stability up to 5 V (vs. Li/Li+ an ionic conductivity of 1.1 x 10 5 S cm 1 at rt (10 4 S cm 1 at 60 degC) and promising mechanical properties. Assembled in a half cell configuration with LiFePO4 (LFP) as the cathode and lithium as the anode, the all solid cell delivers a discharge capacity of 161 mA h g 1 at 0.1C and 60 degC, which is very close to the theoretical capacity of LFP (170 mA h g 1) Also, a stable reversible cycling capacity over 400 cycles with a high coulombic efficiency of 99% is noted at 1C. Similar results are obtained at rt provided that 10 wt% tetraglyme as a plasticizer was added to the SIN SPE.", "corpus_id": 104432319, "venue": "", "year": 2019, "author_names": [ "Farid Ouhib", "Leire Meabe", "Abdelfattah Mahmoud", "Nicolas Eshraghi", "Bruno Grignard", "J M Thomassin", "Abdelhafid Aqil", "Frederic Boschini", "Christine Jerome", "David Mecerreyes", "Christophe Detrembleur" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "199647557", "title": "Construction and carbon dioxide capture of microporous polymer networks with high surface area based on cross linkable linear polyimides", "abstract": "Microporous polyimides have been extensively investigated for gas capture and separation applications. Polyimides with intrinsic microporosity with contorted structures exhibit high surface areas. However, except for polyimides with intrinsic microporosity, most linear polyimides do not have microporous structures. Here, a crosslinked structure is introduced into linear polyimides to construct microporous polyimide networks with high surface areas. It is intriguingly found that the surface areas of the microporous polyimide networks increased by about ten times compared with the uncrosslinked polyimides; they are in the range of 635 727 m2 g 1 and among the best reported results for linear polyimides with intrinsic microporosity. TF PI CL and 6FA PI CL can respectively adsorb 10.03 and 7.28 wt% CO2 (273 K/1 bar) Meanwhile, the CO2/N2 and CO2/CH4 selectivities of TF PI CL are 58.4 and 12.9, respectively. This work reveals that the introduction of a crosslinked structure is an effective method of fabricating microporous polyimide networks with high surface area and highly selective CO2 capture capacity based on linear polyimides, which is crucial for CO2 capture and storage.", "corpus_id": 199647557, "venue": "", "year": 2019, "author_names": [ "Ningning Song", "Tianjiao Wang", "Hongyan Yao", "Tengning Ma", "Kaixiang Shi", "Ye Tian", "Yongcun Zou", "Shiyang Zhu", "Yunhe Zhang", "Shaowei Guan" ], "n_citations": 9, "n_key_citations": 0, "score": 0 }, { "doc_id": "103487022", "title": "Triptycene based microporous polymers (TMPs) Efficient small gas (H2 and CO2) storage and high CO2/N2 selectivity", "abstract": "Abstract In contemporary research, there is a growing interest in the development of novel porous materials that can be used as adsorbents for small gas molecules such as CO2 and H2. This is important from a perspective of more efficient energy alternative and a cleaner environment. Hyper cross linked polymers are a subclass of microporous organic polymers that are also reportedly known to efficiently adsorb H2 and CO2. In this context, triptycene based microporous polymers are known to exhibit high gas storage and separation properties. Herein, facile synthesis of a set of three triptycene based microporous polymers (TMPs) is described. TMPs were prepared by crosslinking triptycene monomers with various (bromomethyl)benzene units using AlCl3 catalyzed Friedel Crafts alkylation reactions in high yield. Gas uptake experiments indicate that TMPs are microporous having moderately high surface areas (up to 1372 m2 g 1) Interestingly, TMP3 demonstrated very high reversible adsorption of molecular H2 (2.21% by mass at 1 bar/77 K) and it may be considered in the league of porous organic frameworks demonstrating outstanding H2 uptake at low pressure. Simultaneously, these polymers also show quite high CO2 uptake at 273 K and 1 bar (up to 223 mg g 1) Additionally TMPs have also exhibited very high CO2/N2 gas selectivity (up to 70) Considering the facile synthetic protocol of TMPs (mandatory for scale up synthesis) large H2 and CO2 uptake and concurrent high CO2/N2 (up to 70) selectivity, these are potential materials for clean energy applications.", "corpus_id": 103487022, "venue": "", "year": 2018, "author_names": [ "Ranajit Bera", "Snehasish Mondal", "Neeladri Das" ], "n_citations": 21, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "233566733", "title": "Effect of oil price uncertainty on clean energy metal stocks in China: Evidence from a nonparametric causality in quantiles approach", "abstract": "Abstract Using the nonparametric causality in quantiles approach, we investigate the causal effects of oil price uncertainty on the returns and volatility of clean energy metal stocks under different market conditions in China. The results suggest that there is a causal relationship between oil price uncertainty and the returns and volatility of Chinese clean energy metal stocks. The effect differs slightly between returns and volatility. Specifically, the causal effect of oil price uncertainty on returns is mainly observed for lower quantiles, whereas the effect on volatility exists for all quantiles. In addition, the effects of change of market environment in China on the causal relationship are tested. The results show that change in market environment has significantly weakened the causal relationship between oil price uncertainty and clean energy metal stocks, suggesting that the structure of the Chinese clean energy metal stock market has undergone major changes.", "corpus_id": 233566733, "venue": "", "year": 2021, "author_names": [ "Liuguo Shao", "Hua Shuai Zhang", "Jin-Yu Chen", "Xuehong Zhu" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "237865122", "title": "Economic shocks and their effect on the schooling and labor participation of youth: evidence from the metal mining price boom in Chilean counties", "abstract": "We analyze the effect of an exogenous economic shock on youth, specifically their incentive for preferring to participate in the labor market over continuing their education. We examine the Chilean case and the sustained increase in the market price of the minerals extracted there during the period of Metal Mining Price Boom between the years 2003 and 2011. Chile is a large scale producer of metals, being the world's largest producer of copper and the third largest producer of molybdenum. The prices of such metals increased steadily during the shock, what boosted the economic growth and the demand for labor. This shock altered the skill composition in the labor market, increasing the jobs for low and medium low skilled workers in the counties more exposed to the shock, thus being the metal mining counties the most affected by its impact. According to this, our results show a negative impact of the shock on returns to schooling that simultaneously reduced school enrollment rates while increasing youth labor participation in those counties.", "corpus_id": 237865122, "venue": "The Annals of Regional Science", "year": 2021, "author_names": [ "Manuel Perez Trujillo", "Gabriel O Rodriguez Puello" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "237710859", "title": "The impacts of oil price shocks and jumps on China's nonferrous metal markets", "abstract": "Abstract Existing studies have been concerned with the relationship between oil price and nonferrous metal markets. However, little attention has been paid to the impacts of lagged oil price shocks and volatility spillover effects of oil price jumps on China's nonferrous metal markets. This paper employs the ARMA EGARCH ARJI model to capture the volatility clustering and dynamic jumps in oil price fluctuation and the ARMA EGARCH model to study the impacts of oil price changes on China's nonferrous metal markets. The results indicate that both the shocks and jumps of oil price affect China's nonferrous metal markets. First, the nonferrous metal markets are negatively affected by the expected shocks and unexpected positive shocks, while the impacts of unexpected negative shocks are positive on most nonferrous metal markets. Second, the impacts of oil price shocks are characterized by time lag, and both the current and lagged oil price shocks affect the nonferrous metal markets. Third, oil price jumps lead to overreaction of volatility in nonferrous metal markets. This study not only contributes to advancing the existing literature, but also merits particular attention from both policy makers and market participants.", "corpus_id": 237710859, "venue": "", "year": 2021, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "237661197", "title": "Interdependence and lead lag relationships between the oil price and metal markets: Fresh insights from the wavelet and quantile coherency approaches", "abstract": "Abstract We empirically examine the connectedness between the oil market and the major precious metals (gold, silver platinum, palladium) and the base metal copper over the available period covering December 06, 1988 to August 31, 2018, using the wavelet coherence and quantile cross spectral analyses. The major findings can be summed up as follows. First, regarding the connectedness among the considered precious metal markets, there is no evidence of identifying the causal interplays. Second, gold and platinum are highly connected with oil and they influence oil prices, especially during global markets' turmoil. Third, the cross quantile coherency analysis shows that gold and silver exhibit the highest quantile coherency. Fourth, the intensity of the nexus between gold and copper attains its nadir at the extreme upper and lower quantiles. Our empirical findings have relevant implications for investors. It is important for investors in commodity markets to make appropriate investment market decisions in extreme market circumstances. On the other hand, policymakers may benefit from our research, as they could generate suitable strategies.", "corpus_id": 237661197, "venue": "", "year": 2021, "author_names": [ "R Khalfaoui", "Sandrine Kablan", "Shawkat Hammoudeh" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "237874519", "title": "Hyperfine field distributions at 119Sn nuclei in ferromagnetic transition metal alloys", "abstract": "", "corpus_id": 237874519, "venue": "", "year": 2021, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "232378992", "title": "Co movement of commodity price indexes and energy price index: a wavelet coherence approach", "abstract": "This research sheds light on the causal link between commodity price indexes, i.e. the Agricultural Raw Materials Price Index, Industry Input Price Index, Metal Price Index, and Energy Price Index, in the global market, using wavelet coherence, Toda Yamamoto causality, and gradual shift causality tests over the period 1992M1 to 2019M12. Findings from the wavelet power spectrum and partial wavelet coherence reveal that: (1) there was significant volatility in the Agricultural Raw Materials Price Index, Industry Input Price Index, Metal Price Index, and Energy Price Index between 2004 and 2014 at different frequencies; and (2) commodity price indexes significantly caused the energy price index at different time periods and frequencies. It is noteworthy that the outcomes of the Toda Yamamoto causality and gradual shift causality tests are in line with the results of wavelet coherence.", "corpus_id": 232378992, "venue": "", "year": 2021, "author_names": [ "Dervis Kirikkaleli", "Hasan Gungor" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "232532425", "title": "Price overreactions in the commodity futures market: An intraday analysis of the Covid 19 pandemic impact", "abstract": "Abstract The objective of this paper is to examine the overreaction behavior of 20 commodity futures based on intraday data from November 20, 2019 to June 3, 2020 with a focus on the impact of the Covid 19 pandemic. A dynamic and non parametric approach is applied on intraday data for four different frequencies (from 1 min to 1 h) and two different sub periods (pre Covid 19 pandemic and during Covid 19 pandemic) in order to detect overreaction behavior which is defined as a large change of prices followed by proportional price reversals. Our empirical findings show that the overreaction hypothesis is confirmed for the considered commodity futures. Furthermore, both the number and the amplitude of overreactions is higher during the Covid 19 pandemic. Our findings also indicate that soft and metal commodities show much less overreactions than precious metals and especially energy commodities. In particular, crude oil futures exhibit a different overreaction behavior compared to other commodities since it has a higher number of negative than positive overreactions during the Covid 19 pandemic. We also find that the data frequency is independent of the overreacting behavior in both periods as the results continuously improve when having more observations due to higher frequencies. Finally, we find that extreme overreactions during the Covid 19 pandemic provide a great potential for profitable trading returns, which can be exploited by traders.", "corpus_id": 232532425, "venue": "", "year": 2021, "author_names": [ "Oliver Borgards", "Robert L Czudaj", "Thi Hong Van Hoang" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "234295174", "title": "COMMODITY PRICE AND INFLATION DYNAMICS: EVIDENCE FROM BRIICS", "abstract": "In this study, we use a commodity augmented Phillips curve to investigate the impact of global commodity prices on domestic inflation in Brazil, Russia, India, Indonesia, China, and South Africa. Oil and energy prices cause inflationary pressures in all countries, except Russia, where they cause deflationary pressures. In Indiaand Indonesia, global food prices are highly significant and positively related to inflation, while in South Africa precious metal prices impact inflation negatively. For policymakers, this study provides insights on the domestic adjustments required for inflation targeting in response to global commodity price volatility.", "corpus_id": 234295174, "venue": "", "year": 2021, "author_names": [ "Syed Aun Raza Rizvi", "Sahminan Sahminan" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "237664094", "title": "Forecasting copper price by application of robust artificial intelligence techniques", "abstract": "Abstract Metal price is one of the most important and effective parameters in assessing different projects such as industry and mining. In this regard, price variations can play a vital role in the correct decision making of managers to develop or limit mining activities. Considering the increasing use of artificial intelligence (AI) based networks in different fields such as price estimation, four methods were used in the present work for the first time to predict the price of important and extensively used copper grade A cathode. These methods include Gene expression programming (GEP) Artificial neural network (ANN) Adaptive neuro fuzzy inference system (ANFIS) and ANFIS ACO (ant colony optimization algorithm) In this process, coal, aluminum, crude oil, gold, iron ore, natural gas, nickel, and lead were selected as the copper price parameters from 1990 to 2020. In this study, the ANN model with one hidden layer comprising 13 neurons, RMSE of 356.51, M A E of 239.105 /ton) M A P E of 5.70% /ton) and coefficient of determination (R2) of 98.1% for network test data was selected as the best model in predicting copper prices. In terms of their performance, ANFIS, ANFIS ACO and GEP models were ranked next in the order of their appearance. Overall, an acceptable performance was found through all four AI methods in this study for predicting copper prices.", "corpus_id": 237664094, "venue": "", "year": 2021, "author_names": [ "Hasel Amini Khoshalan", "Jamshid Shakeri", "Iraj Najmoddini", "Mostafa Asadizadeh" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "234833360", "title": "Oil price shocks and the return and volatility spillover between industrial and precious metals", "abstract": "Abstract This study explores the dynamic return and volatility connectedness for some dominant industrial (Aluminium, Copper, Lead, Nickel, Tin, and Zinc) and precious metals (Gold, Palladium, Platinum, Silver) to crude oil shocks (risk, demand, and supply) during the sample period between January 2, 2009 and July 17, 2020. Our findings indicate that, demand shocks and risk shocks are the dominant receiver (transmitter) of shocks from (to) for metal returns. Second, we document the time varying nature of both total return and volatility connectedness. Third, both net directional return and volatility connectedness show that some metals such as Tin, Gold and, even, Nickel, Lead and Aluminium appear as net transmitters, at least in some intervals of the sample period analysed. On the other hand, other industrial and precious metal markets show a net receiver profile, such as Copper, Zinc and Platinum, among others. Lastly, we find more differences between the net dynamic connectedness of the metal markets analysed in terms of return than volatility. The net directional volatility connectedness increases sizably during the global crisis due to the spread of the SARS CoV 2 coronavirus.", "corpus_id": 234833360, "venue": "Energy Economics", "year": 2021, "author_names": [ "Zaghum Umar", "Francisco Jareno", "Ana Maria Ibanez Escribano" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "221912835", "title": "The CARAMEL Project: a Secure Architecture for Connected and Autonomous Vehicles", "abstract": "The main goals of the CARAMEL project are to enhance the protection of modern vehicles against cybersecurity threats related to automated driving, smart charging of Electric Vehicles, and communication among vehicles or between vehicles and the roadside infrastructure. This work focuses on the latter and presents the CARAMEL architecture for improving the security and privacy of communication for connected and autonomous driving. The proposed architecture includes: (i) multi radio access technology capabilities, with simultaneous 802.11p and LTE Uu support; (ii) a MEC platform, where algorithms for detecting attacks are implemented; (iii) an intelligent On Board Unit with anti hacking features inside the vehicle; (iv) a Public Key Infrastructure that validates in real time the integrity of vehicle's data transmissions. As an indicative application scenario, the interaction between the entities of the CARAMEL architecture is showcased in the case that the GPS locations used by vehicles are spoofed.", "corpus_id": 221912835, "venue": "2020 European Conference on Networks and Communications (EuCNC)", "year": 2020, "author_names": [ "Christian Vitale", "Nikos Piperigkos", "Christos Laoudias", "Georgios Ellinas", "Jordi Casademont", "Pouria Sayyad Khodashenas", "Andreas Kloukiniotis", "Aris S Lalos", "Konstantinos Moustakas", "Pablo Barrientos Lobato", "Javier Moreno Castillo", "Petros Kapsalas", "Klaus-Peter Hofmann" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "155108183", "title": "Integrated Safety and Cybersecurity Risk Analysis of Cooperative Intelligent Transport Systems", "abstract": "Automated Vehicles (AVs) the self driving vehicles, are expected to outperform human drivers and improve road safety in the near future. However, to achieve these goals, they need to communicate with each other and the other road participants and coordinate their actions. The systems of connected cooperative AVs are called Cooperative Intelligent Transport Systems (C ITS) Similar to AVs, C ITS are vulnerable to failures and cyberattacks. In our previous work, we proposed a method US2 for AV risk analysis. This paper extends US2 and presents a method for integrated C ITS safety and cybersecurity risk analysis. It takes into consideration automotive safety and cybersecurity standards ISO 26262 and SAE J3061, and utilizes the elements of the previously proposed risk analysis methods US2, EVITA, TVRA, and RACE.", "corpus_id": 155108183, "venue": "2018 Joint 10th International Conference on Soft Computing and Intelligent Systems (SCIS) and 19th International Symposium on Advanced Intelligent Systems (ISIS)", "year": 2018, "author_names": [ "Giedre Sabaliauskaite", "Jin Cui", "Lin Shen Liew", "Fengjun Zhou" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "216263593", "title": "Modeling and analyzing cyberattack effects on connected automated vehicular platoons", "abstract": "Abstract Vehicular platooning requires an open access environment of vehicle communications to enable cooperating connected automated vehicles (CAVs) to share their travel information. However, the open access environment makes the cooperating platoon CAVs vulnerable to cyberattacks, causing concerns on traffic safety and mobility. So far, due to the lack of analytical models integrating malicious effects of manipulated information into CAV dynamics, we have limited knowledge on CAV platoon performance under cyberattack. It necessities a modeling framework to support a comprehensive analysis of the CAV platoon performance in a capricious travel environment. This study seeks to bridge this critical gap from the following three aspects. First, we review potential safety related cyberattacks faced by CAVs, related to manipulation of vehicle position, speed, and acceleration. Based on the review, these cyberattacks are categorized into three types: bogus messages, replay/delay, and collusion attack. Second, we develop a generalized vehicle dynamics model that accounts for the cyberattack effects on CAV dynamics. The proposed model, labeled cooperative intelligent driver model (CIDM) integrates the dynamic communication topological structure to enable the analysis of effects of manipulated information on CAV dynamics. The dynamic communication structure is a time varying function which is determined by the communication range and the distance between two vehicles. Upon the proposed CIDM, the third aspect focuses on simulation analysis of CAV platoon safety and efficiency under cyberattacks, which demonstrate the cyberattack effects at the platoon level. This study contributes to the fundamental understanding of CAV platoon dynamics under cyberattacks and lays a foundation to enhance the cybersecurity of CAV systems.", "corpus_id": 216263593, "venue": "", "year": 2020, "author_names": [ "Pengcheng Wang", "Xinkai Wu", "Xiaozheng He" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "15605711", "title": "Potential Cyberattacks on Automated Vehicles", "abstract": "Vehicle automation has been one of the fundamental applications within the field of intelligent transportation systems (ITS) since the start of ITS research in the mid 1980s. For most of this time, it has been generally viewed as a futuristic concept that is not close to being ready for deployment. However, recent development of \"self driving\" cars and the announcement by car manufacturers of their deployment by 2020 show that this is becoming a reality. The ITS industry has already been focusing much of its attention on the concepts of \"connected vehicles\" (United States) or \"cooperative ITS\" (Europe) These concepts are based on communication of data among vehicles (V2V) and/or between vehicles and the infrastructure (V2I/I2V) to provide the information needed to implement ITS applications. The separate threads of automated vehicles and cooperative ITS have not yet been thoroughly woven together, but this will be a necessary step in the near future because the cooperative exchange of data will provide vital inputs to improve the performance and safety of the automation systems. Thus, it is important to start thinking about the cybersecurity implications of cooperative automated vehicle systems. In this paper, we investigate the potential cyberattacks specific to automated vehicles, with their special needs and vulnerabilities. We analyze the threats on autonomous automated vehicles and cooperative automated vehicles. This analysis shows the need for considerably more redundancy than many have been expecting. We also raise awareness to generate discussion about these threats at this early stage in the development of vehicle automation systems.", "corpus_id": 15605711, "venue": "IEEE Transactions on Intelligent Transportation Systems", "year": 2015, "author_names": [ "Jonathan Petit", "Steven E Shladover" ], "n_citations": 392, "n_key_citations": 31, "score": 1 }, { "doc_id": "70209967", "title": "Modelling Safe and Secure Cooperative Intelligent Transport Systems", "abstract": "Automated Vehicles (AVs) are expected to help in significantly reducing traffic injuries and fatalities in the near future. However, to achieve this goal, they must be safe and secure. The recent news of the first fatal crash of AV including pedestrian confirm the urgent need of addressing AV safety and security issues to prevent such accidents from happening in the future. In order to outperform human drivers, AVs need to communicate with the other traffic participants, which makes them more vulnerable to cyberattacks. Cooperative Intelligent Transport Systems (C ITS) which include vehicle to vehicle and vehicle to infrastructure communications, are expected to be launched in Europe next year. Thus, assuring their safety and security is crucial. This paper presents an approach, CESAM&SSM, for modelling safe and secure C ITS using the CESAM method and the Six Step Model. A combination of these two methods enables comprehensive analysis of C ITS from operational, functional, constructional, safety, and security perspectives. The propose approach is compliant with three international standards: ISO 26262 vehicle safety standard, SAE J3061 vehicle cybersecurity standard, and ISO 21217 intelligent transport system architecture standard.", "corpus_id": 70209967, "venue": "CSDM Asia", "year": 2018, "author_names": [ "Giedre Sabaliauskaite", "Jin Cui", "Lin Shen Liew", "Fengjun Zhou" ], "n_citations": 1, "n_key_citations": 1, "score": 0 }, { "doc_id": "88494971", "title": "Merging safety and cybersecurity analysis in product design", "abstract": "When developing cyber physical systems such as automated vehicles, safety and cybersecurity analyses are often conducted separately. However, unlike in the IT world, safety hazards and cybersecurity threats converge in cyber physical systems; a malicious party can exploit cyber threats to create extremely hazardous situations, whether in autonomous vehicles or nuclear plants. The authors propose a framework for integrated system level analyses for functional safety and cyber security. They present a generic model named Threat Identification and Refinement for Cyber Physical Systems (TIRCPS) extending Microsoft's six classes of threat modelling including Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service and Elevation Privilege. TIRCPS introduces three benefits of developing complex systems: first, it allows the refinement of abstract threats into specific ones as physical design information becomes available. Second, the approach provides support for constructing attack trees with traceability from high level goals and hazardous events (HEs) to threats. Third, TIRCPS formalises the definition of threats such that intelligent tools can be built to automatically detect most of a system's vulnerable components requiring protection. They present a case study on an automated driving system to illustrate the proposed approach. The analysis results of a hierarchical attack tree with cyber threats traceable to high level HEs are used to design mitigation solutions.", "corpus_id": 88494971, "venue": "", "year": 2018, "author_names": [ "Dajiang Suo", "Joshua E Siegel", "Sanjay E Sarma" ], "n_citations": 1, "n_key_citations": 1, "score": 0 }, { "doc_id": "115146865", "title": "SCALED TESTBEDS FOR AUTOMATED ROBOTIC SYSTEMS", "abstract": "The automotive and defense industries are going through a period of disruption with the advent of Connected and Automated Vehicles (CAV) driven primarily by innovations in affordable sensor technologies, drive by wire systems, and Artificial Intelligence based decision support systems. One of the primary tools in the testing and validation of these systems is a comparison between virtual and physical based simulations, which provides a low cost, systems approach testing of frequently occurring driving scenarios such as vehicle platooning and edge cases and sensor spoofing in congested areas. Consequently, the project team developed a robotic vehicle platform Scaled Testbed for Automated and Robotic Systems (STARS) to be used for accelerated testing elements of Automated Driving Systems (ADS) including data acquisition through sensor fusion practices typically observed in the field of robotics. This paper will highlight the implementation of STARS as a scaled testbed for rapid prototyping, accelerated testing and verification and validation (V&V) and its applicability as a simulation tool for additional CAV concepts, such as modeling edge cases like swarm behaviors for route delivery and vehicle cyber security testing on sensors. INTRODUCTION In this paper, we consider the validity of using a scalable vehicle platform for conducting hardwarein the loop (HIL) experimentation with respect to a virtual transportation model. The Scalable Testbed for Automated Robotic Systems (STARS) platform is designed to be a cost effective modeling and simulation tool combining physical and virtual testing to drive conclusions about Connected and Automated Vehicles' (CAV) functionality. The STARS system consists of five physically identical remote controlled cars, modified with commercial off the shelf (COTS) electronics, and an external ground control station (GCS) for developing path planning modules. Initially, STARS was designed to test cybersecurity mitigation strategies of vehicle swarming patterns and tracking functions, but since it uses modular components, it was adapted to match distinct use cases for connected vehicle Proceedings of the 2018 Ground Vehicle Systems Engineering and Technology Symposium (GVSETS) Scaled testbeds for automated robotic systems Page 2 of 8 technology (e.g. platooning, lane changing, and lane keeping assistance) The advantage of this system lies in the modularity and scalability of vehicle data being collected: The experiment discussed in this paper highlights a small scaled test orchestrated to observe and record CAV behaviors to understand real world challenges in full sized vehicles. This combined small scale physical and virtual platform allows the project team to perform cost effective rapid verification and validation (V&V) of CAV functionalities and vehicle design features. The platform leverages prototype and simulationbased testing to generate analysis of frequent driving scenarios and edge cases not typically replicated in the real world. The objective of this research is to provide insight to manufacturers and certifiers on how they can use small scaled test beds like STARS to validate CAV behaviors and consider edge cases like swarm behaviors and vehicle cyber security mitigation techniques concepts that are becoming prominent to both the automotive and defense industry. BACKGROUND The focus of this paper is the experimentation and analysis of field testing a platooning scenario of an \"automated convoy,\" an application in which a group of automated vehicles follows a manually driven vehicle throughout a path, maintaining consistent speed and spacing. Figure 1: Automated Vehicles Demonstrating a Platooning Proof of Concept at Aberdeen Proving Ground in 2017 [1] The project team conducted a series of field tests in an isolated, controlled environment in which test vehicles demonstrated a platooning simulation built out in a transportation modeling tool for validation. By comparing simulated data with empirical field data, the project team analyzed performance metrics of both platooning scenarios to conclude V&V for small scale testing. Principles of modern control theory were used for developing simple control algorithms to compare the virtual and realworld model. As part of developing a methodology for STARS, the project team explored the use of HIL for scaled vehicle testing and V&V through a state of the art assessment of facilities and techniques used in the industry. Findings from this research of relevant HIL literature determined the following: HIL is already widely utilized in the automotive industry. HIL models consider many external factors to make each simulated model more accurate including gravity, resistance, and friction [2] A very low construction cost and short development cycle allow for testing variable conditions including road surface material, road geometry and slope, and static or dynamic obstacles [3] Embedding physical vehicle parts into a platform requires specialized space. The HIL method is highly reproducible and allows for flexibility in simulating realworld traffic operations. Small scale testing and HIL have been used by the automotive and defense industries, and both have been successfully implemented for V&V in the past. For example, the National Highway Traffic Safety Agency (NHTSA) Vehicle Research Test Center (VRTC) has conducted HIL simulation for validating braking components for heavy trucks [4] It is evident that the application of HIL in STARS will allow the project team to remain agile and innovative as it addresses the Federal Government's evolving needs for CAV regulation. Proceedings of the 2018 Ground Vehicle Systems Engineering and Technology Symposium (GVSETS) Scaled testbeds for automated robotic systems Page 3 of 8 METHODOLOGY The validation of the STARS platform is conducted by comparing the scaled physical vehicle's path trajectory with simulated trajectories from VISSIM, an industry standard transportation simulation tool. The following diagram presents the steps in validation. Figure 2: Validation Process of STARS Project The experiment begins with user defined parameters: two vehicles (leader/follower) traveling in a straight path where the vehicle parameters are set to a default mid sized vehicle, measuring 4.92 feet wide by 15.62 feet long. Within the VISSIM simulation, an extended intelligent driver model (eIDM) was used to create an ideal scenario of cooperative adaptive cruise control (CACC) which is a fundamental concept behind vehicle platooning used in commercial vehicles. A CACC illustration can be seen in Figure 3, where the follower vehicles' speeds and distance can be observed. Figure 3: Diagram of a Simple CACC Model The eIDM reflects an ideal scenario used in CACC modeled in VISSIM. The generalized equations can be seen here:", "corpus_id": 115146865, "venue": "", "year": 2018, "author_names": [ "Diego Lodato", "Raj Kishore Kamalanathsharma", "Maurice Farber" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225261480", "title": "Trusting autonomous vehicles: An interdisciplinary approach", "abstract": "Abstract The theoretical concept of trust has been identified as highly important to the successful design of intelligent technologies such as autonomous vehicles (AVs) In human centred transport research this has resulted in a focus on trust in the technical design of future AVs and has raised the question of how the conditions that form trust change as technologies become more intelligent. In this article we discuss the first stage of an interdisciplinary project that brought together ethnographic and experimental user studies into trust in intelligent cars. This stage focused on the development of an interdisciplinary methodological framework for the user studies, through a review of 258 empirical HCI research articles on trust in automation and AVs. The review investigated the following research questions: a) what are the key themes in HCI methodologies used to research trust in automation and AVs; b) how do they account for trust in AVs as part of wider contexts; and c) how can these methodologies be developed to include more than momentary and individual human machine interactions. We found that while theoretical understandings of trust in automated technologies acknowledge the relevance of the wider context in which the interaction occurs, existing methodologies predominantly involve experimental studies in simulated environments with a focus on reliance related aspects of trust. We identified that ethnographic user studies can potentially contribute to new connections between theoretical understandings and conventional experimental methods. Therefore, we propose a framework for an interdisciplinary approach that combines experimental and ethnographic methodologies to investigate trust in AVs.", "corpus_id": 225261480, "venue": "", "year": 2020, "author_names": [ "Kaspar Raats", "Vaike Fors", "Sarah Pink" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "86601353", "title": "MICROTOKEN EXCHANGE (MTE) FOR SECURING DIGITAL DATA FROM CYBER WARFARE ATTACKS", "abstract": "New technological advancements call for innovative cybersecurity assurance measures in preventing increased vulnerabilities through cyber attacks and cyber warfare. Current encryption processes are no longer failsafe in secure data management architectures, especially with accessibility to Advanced Encryption Algorithms (AES) Through new technological advancements, including informational technology architectures and autonomous vehicle implementation, it is imperative to provide new paradigms of security against cybersecurity breaches. In all realms of data usage, including the development of the Next Generation of military vehicles, the demand for significant preventative measures in cybersecurity assurance has dramatically increased. The matter of advanced need in cybersecurity can be established through the use of MicroToken ExchangeTM (MTE) By way of MicroToken Exchange, it is possible to provide an additional robust layer of security that allows the right data, as well as ultrasecure command and control actions, to get to the right device, endpoint or End User Device (EUD) at the right time. Through MicroToken Exchange (MTE) operational changes are made to a sequence of digital data, which replaces the original data with new data or MicroTokens, prior to the streaming process; this process protects the data by replacing the real data with MicroTokens. By changing the data through the streaming process to MicroTokens rather than real data, the real data is then rendered inaccessible during the streaming process. When the MicroTokens reach their destination, they are then transformed for the device endpoint or EUD that the information was intended for to execute a command. This added transformation layer inhibits non authorized users to affect unauthorized actions to any paired End User Devices (EUDs) This process would provide the U.S. Army and U.S. Marine Corps with optimized effectiveness, efficiency and security in systems processing with MTE. MTE can be deployed on a one to one, one to many, and/or many to many ecosystem. Compatibility of this process is compliant with C, C+ and Java platforms, with possibilities of translation for multiple languages. MTE makes command data exploitation unassailable, as systems and connected devices remain unscathed, fully operational, stable, and secure by preventing these vulnerabilities. It is both unique and unparalleled in its design architecture. This paper provides more details on the process and the possibilities aligned with MTE's applications. In providing these details, this paper further converses how MTE can provide cybersecurity assurance to informational technology aspects of the military. Also, how to integrate into the Next Generation vehicles for protection against cyber attacks and cyber warfare in autonomous systems. By providing these additional layers of security, MicroToken Exchange would support the mission of the U.S. Army and the U.S. Marine Corps. This would prevent unauthorized user access to all information and all autonomous controls, by removing the real data that typically passes through the streaming process. Utilization of MTE would also coincide with the military goal of using more Unified Capabilities (UC) By preventing data collection from unauthorized users, vulnerabilities decrease dramatically, security increases exponentially, mission effectiveness increases dramatically, and safety of this nation's business and warfighter communities are preserved in the cyber realm. Introduction In a world of interconnectivity comes the new responsibility of safeguarding our information. Technology, the need for speed, as well as, the vulnerabilities within networks, continue to grow exponentially. The development of a new platform for cyber attacks and cyber warfare has complicated the dynamic of using these data networks in business and in warfighter communities. The typical solution for this thus far has been use of encryption and redblack engineering, which is traditionally followed by government and military information architect intervention. Due to the increased rates of speed and the multiplications of vulnerabilities these typical solutions are becoming less effective and less practical. These situations coupled with the ability to employ super computers on Advanced Encryption Algorithms (AES) and the perfect storm for cyber warfare suddenly exists. Combat vehicle prototypes are focused on leap ahead technologies to support the mission. Ground Vehicle Robotic mid term capabilities are set to improve the cybersecurity of unmanned systems. TARDEC Value Stream 1 Autonomy is one program that warrants 100% security need in its technological architecture. In this growth of technology, also comes the growth of responsible protection against cyber warfare attacks. Current data environments require data yet using the \"real\" data is no longer a secure option. Through MicroToken Exchange (MTE) Secure Data Management Architecture is protected from cyber activity. This process makes it possible to secure datain transit, changing the technological aspect of where vulnerabilities exist in information technology and autonomous systems. MicroToken ExchangeTM (MTE) MicroToken Exchange, (MTE) is a process for information security that consists of replacing a sequence of digital data from a data stream with a different sequence of digital data that has no relationship to the data that is replaced. In the case of data that is already encrypted, the process of MTE can still be applied as an additional layer of protection. Figure 1: The use of MicroToken Exchange communications between the Universal Controller and the paired EUD. Process is shown prior to the MicroToken Exchange from both end nodes. The following is an overview regarding its operation and how it works: Every send/receive command is authenticated and obfuscated, (No Encryption Req. MicroTokens execute preprogrammed commands, these commands are stored in paired libraries. MicroTokens can only be interpreted by paired devices. MicroTokens are instantly obsolete. Each time a command is execute the entire library of commands is re generated. Valid MicroTokens are hidden within complex digital chaff. The amount of chaff changes with each command so every packet has a different size. Pattern recognition is not possible due to its design. While there are additional layers within MTE, the solution makes sensitive command data invisible to hackers and cyberterrorists. MTE for data in motion began with the securing of commands to both connected and intelligent devices, including IoT devices. With the use of MTE, it is possible to secure data intransit, through enhanced capabilities that are agnostic to the type of Communication Protocol that is used to transmit information. By processing data through the MTE process, a new paradigm is created by removing the vulnerability that exists today with data in motion. These capabilities are eligible for use in transferring data commands and communications This process secures the commands, providing the user with an unequivocal layer of protection against cybersecurity breaches, including unauthorized actions. Operational Challenge Vehicle to Infrastructure (V2I) communication is a critical component of a connected vehicle environment a system of hardware, software, firmware and wireless communication that enables the dynamic transfer of data between vehicles as well as between vehicles and elements of the Joint Information Environment, (JIE) The greatest threat facing autonomy enable military vehicles is cybersecurity. TACOM TARDEC is developing Squad Maneuver Equipment Transport, (SMET) systems. Securing commands from the control device to the SMET over a wireless network is required for operational success. Current cybersecurity capabilities are at \"fail safe\" level. TARDEC is seeking enhanced security capabilities to achieve \"full/fail mission capable\" systems. By continuing to use typical cybersecurity options, there continues to be security risks and concerns for Automated Driving and Advanced Driver Assisted Systems, (ADAS) Through experimentation, it has been demonstrated that there are consequences of jamming and spoofing, exploiting underlying sensing principles. With very little effort, using simplistic tactics, bad actors can cause a great deal of harm and or destruction. Fig 2. Shows the Robotic and Autonomous system and their need for assured control. MTE and Army Digital Devices Military vehicles receive command inputs from many devices that need to control them, including satellites, handheld devices, other vehicles, thumb drives, and ground based installations. These command inputs need to be secured. The purpose of this Technical Paper is to present a Proof of Principle encompassing physical devices, software, protocol rules, and MTE proprietary software \"methods\" that provide significantly stronger cybersecurity to protect commands over existing communication networks. The systems viewpoint below presents the envisioned integration of MTE for test and evaluation at TRL 4 and rapidly maturing to TRL 6. Fig 3. High level pictorial of a system without MTE versus that of a system with MTE. EUDS Recent trends in military communications are driving the Army toward more diverse end user devices (EUDs) to perform more activities via Unified Capabilities (UC) UC are a suite of integrated voice, video and/or data services delivered ubiquitously across a secure and highly available network infrastructure, independent of technology, to increase mission effectiveness for the warfighter and business communities.1 Concurrently, Army commanders are requesting EUDs based on their assessments of mission requirements, raising demand for the devices themselves as well as the connectivity necessary to enable their use. Meeting the demand comes at a cost. For the purposes of this Technical Paper TARDEC identifies all nodes within a network as a EU", "corpus_id": 86601353, "venue": "", "year": 2018, "author_names": [ "Dariusz G Mikulski", "Steven R Russo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "219979985", "title": "Resilience modeling concepts in transportation systems: a comprehensive review based on mode, and modeling techniques", "abstract": "The objective of this comprehensive review study was to compile a state of the art understanding of the resilience of the transportation system due to natural and man made disasters. This study identified resilience measurement parameters that can be used to formulate resilience quantification and improvement strategies of a transportation system. Reviewed articles were classified and summarized from two perspectives: (i) modeling based on the mode of transportation; and (ii) modeling based on the mathematical technique used to quantify resilience. One of the unique contributions of this review article is that it compiled the key resilience indices that were analyzed to quantify resilience. This review revealed that the majority of the scholarly articles on the topic of transportation system resilience published since 2006, were focused on the resilience of the roadway based transportation system, and vulnerability was one of the most explored resilience indices in evaluating transportation system resilience. Several future research directions were identified considering the implications of emerging transportation technologies (e.g. connected and automated vehicle technology) The complex interdependency among critical infrastructure systems such as power, transportation, and communication system, as well as the cybersecurity issues in the advanced intelligent transportation system, will be vital in the resilience analysis of future transportation systems.", "corpus_id": 219979985, "venue": "", "year": 2020, "author_names": [ "Shofique Uddin Ahmed", "Kakan C Dey" ], "n_citations": 4, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "222218343", "title": "Impact of Adherence Education and Monitoring on Community Pharmacy Performance Scores and Patient Satisfaction", "abstract": "ABSTRACT Background: Adherence, specifically to noninsulin diabetes medications, statins, and renin angiotensin system antagonists (i.e. angiotensin converting enzyme inhibitors (ACEi) angiotensin II receptor blockers (ARBs) and aliskiren) is a measure tracked by the Centers for Medicare and Medicaid Services (CMS) to give Medicare Part D plans a star rating; pharmacies are impacted by these star ratings. The pharmacy is given a performance score based on the measure. Some pharmacies use a performance information management platform (PIMP) that allows pharmacies to better understand performance information to impact patient care. Objectives: (1) To evaluate if a monthly adherence monitoring and education service impacts the percentage of patientsadherent determined by pharmacy performance scores; (2) To determine patient satisfaction with the service in a large community pharmacy chain. Methods: A six month prospective interventional pilot study including patients with a proportion of days covered (PDC) of less than 80% for oral diabetes or renin angiotensin system antagonists (RASA) medications was conducted in two pharmacies of a large community pharmacy chain in Southwest Virginia. Using pharmacy internal data analytics and PIMP data, the percentage of patients who are adherent to oral diabetes or RASA medications was determined including the baseline PDC for each patient. At the start of the study, the standard of care in this large community chain pharmacy was to address adherence, follow up in one month and every three months thereafter. In this study, pharmacists provided monthly telephonic adherence monitoring and education for a six month period. Each session was scripted for medication adherence history, education and data collection. The pharmacist provided guidance and counseling based on how the patient answered the questions. Pharmacists gathered information about adherence patterns and behaviors using a 14 item Likert scale and multiple choice based questionnaire during the first session. After completion of the final adherence monitoring and education session, pharmacists gathered patient satisfaction information using an eight item Likert scale questionnaire. At the end of the six month period, using PIMP data, the percentage of patients adherent to oral diabetes or RASA medications was determined based on pharmacy performance scores. The data was analyzed using uni variate and bi variate statistics to determine if there was a difference in pharmacy performance scores from the pre study analysis. The adherence patterns and behaviors, as well as patient satisfaction with the program was evaluated to determine factors influencing nonadherence. Results: A total of 55 patients were identified in two pharmacies, ten of which were excluded or declined involvement, leaving 45 enrolled in the adherence monitoring and education service. Of the 45 enrolled patients, ten completed the adherence patterns and behaviors questionnaire. About half of the patients were men (50.95% with an average age of 71.17 years and taking an average of 6.55 prescription medications. All patients had Medicare Part D insurance and majority had a yearly income of less than $40,000. The average baseline PDC was 68.92. In pharmacy 1, the average performance score for oral diabetes medications trended down and the average performance score for hypertension medications trended up over the study period. In pharmacy 2, the average performance score for oral diabetes medications trended up and the average performance score in hypertension medications trended up over the study period. The adherence patterns and behaviors questionnaire revealed the majority of patients rarely forgot to take medications or run out of medications. Additionally, cost of medications did not seem to impact adherence and majority of patients knew the names and indications of their medications. Only one patient completed the patient satisfaction survey. Conclusions: An adherence monitoring and education service had mixed results in improving patient adherence and pharmacy performance scores. Only one patient completed the satisfaction survey, thus no conclusions can be made regarding patient satisfaction of the program. More research needs to be done regarding telephonic adherence programs.", "corpus_id": 222218343, "venue": "Innovations in pharmacy", "year": 2020, "author_names": [ "Chelsea Sprouse", "Morgan Grant", "Jamie Remines", "Pramit A Nadpara", "Jean-Venable Goode" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "221127850", "title": "Screening Services in a Community Pharmacy in Poznan (Poland) to Increase Early Detection of Hypertension", "abstract": "Background: Community pharmacies in many countries around the world provide healthcare services for patients. Pharmacists trained as medication experts provide a wide range of patient care services related to medication therapy, patient education, disease prevention, and health promotion. Professional training, expertise, and skills qualify pharmacists to engage in health screenings. These screening programs performed by community pharmacists can help to identify risk factors, facilitate early detection of common diseases, and assist physicians with making effective diagnoses. Objectives: In this study, we created and tested a novel model to provide professional monitoring and counseling on blood pressure by community pharmacists. The aims of the study were to identify the prevalence of elevated blood pressure among patients visiting a community pharmacy and describe the demographic characteristics of patients with hypertension (sex, age, education, body weight, and hypertension risk factors) Methods: The research project was conducted in an accredited community pharmacy in Poznan, Poland, from January to April 2019. A total of 118 anonymous patients (30.5% men and 69.5% women) participated in this study. To qualify for this study, participants had to be older than 18 years of age and have no previous diagnosis of hypertension or other cardiovascular disease. Results: Based on the blood pressure screenings, 61.9% of patients were qualified for the standard consultation (SC: normal blood pressure) 21.2% for the intensive consultation (IC: normal blood pressure and hypertension risk factor) 16.9% patients with elevated blood pressure for the high risk consultation (HRC: referred to a physician) and 3.4% received a diagnosis of hypertension. We qualified 35.6% with a high pressure value (greater than 140/90 mmHg) Conclusions: The novel model for blood pressure control screening and counseling implemented in a generally accessible community pharmacy may help with early detection of hypertension problems, lead to initiation of effective patient counseling by a community pharmacist, and result in early referral of the patient to a physician.", "corpus_id": 221127850, "venue": "Journal of clinical medicine", "year": 2020, "author_names": [ "Magdalena Waszyk-Nowaczyk", "Weronika Guzenda", "Beata Plewka", "Michal Michalak", "Magdalena Cerbin-Koczorowska", "Lukasz Stryczynski", "Michal Byliniak", "Anna Ratka" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "73397524", "title": "Assessment of patient perceptions concerning a community pharmacy based warfarin monitoring service", "abstract": "Objective: To assess patient perceptions of a North Carolina community pharmacy based warfarin monitoring service. Methods: Prospective study of patients 18 years of age and older, who filled a prescription for warfarin, in one of five Raleigh area community pharmacies, between May 1, 2010 and October 31, 2010. A 14 item survey, along with a self addressed stamped envelope, was mailed to 330 identified patients. The survey inquired about details of current anticoagulation monitoring services, interest in utilizing a local community pharmacy for this service, and confidence in a pharmacist managed program. Results: 26% of surveys were returned. 48% of surveyed individuals responded that they would be interested in having their warfarin monitoring performed by a trained pharmacist in a community pharmacy setting. Conclusion: Many participants responded that the community pharmacy would be more convenient than or as convenient as their current location. This may be a new clinical service that could be offered in certain community pharmacies.", "corpus_id": 73397524, "venue": "", "year": 2012, "author_names": [ "Jennifer A Waitzman", "Debbie Hiller", "Macary Weck Marciniak", "Stefanie P Ferreri" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "195188625", "title": "Clinical outcomes of community pharmacy services: A systematic review and meta analysis.", "abstract": "Community pharmacy services (CPS) have been shown to be positive in many disease management and patient care programs, but clinical outcomes were followed by process indicators and methodological flaws in previous researches made it difficult to prove the effectiveness of clinical outcomes of CPS. Therefore, this study attempted to review the clinical outcomes of CPS. Interventions included are provision of medication review, patient education, adherence assessment, health/lifestyle advice, physical assessment, monitoring, prescribing, or adjusting and administering therapy from community pharmacists. By searching for key words like community pharmacists, pharmaceutical services, clinical outcomes in MEDLINE and EMBASE and manually searching (up to June 2017) 1910 studies investigating the clinical outcomes of CPS were obtained. After screening the titles, abstracts and full texts for relevancy, 52 researches with controlled groups were included and assessed for methodological quality. Finally, 25 studies were selected for the meta analysis based on their common endpoints: systolic blood pressure, diastolic blood pressure and glycosylated haemoglobin. The Cochrane tool was used to assess the risk of bias. Chi square and I square tests were performed to assess heterogeneity, and the weighted mean differences were estimated using random effect models. Of the 52 articles, 47 studies demonstrated that CPS had positive clinical outcomes, 3 studies showed mixed outcomes and 2 studies revealed no effects. In the meta analysis, intervention groups displayed greater reductions in systolic BP (95% CI: 8.198 2.356) diastolic BP (95% CI: 3.648 0.645) and HbA1c (95% CI: 0.905 0.224) than usual care groups. CPS have positive clinical outcomes, particularly significant reductions in systolic BP, diastolic BP and HbA1c. It was difficult to find out which intervention(s) of CPS directly led to certain changes and influence of CPS might be underestimated for only three common surrogate endpoints. More researches should be conducted with sufficient data.", "corpus_id": 195188625, "venue": "Health social care in the community", "year": 2019, "author_names": [ "Cancan Yuan", "Yiwen Ding", "K Zhou", "Yuankai Huang", "Xiaoyu Xi" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "25853960", "title": "Impact of wellness coaching and monitoring services provided in a community pharmacy.", "abstract": "OBJECTIVE To assess the clinical and patient centered outcomes of health coaching provided in the workplace by community pharmacists. DESIGN Prospective interventional cohort study. SETTING 11 independent community pharmacy chain locations in northwest and central Missouri, from January 2010 to January 2011. PARTICIPANTS 81 benefit eligible patients and 23 community pharmacy coaches employed by the self insured pharmacy chain. INTERVENTION Patients were stratified into monitoring groups according to baseline screening values for cholesterol, blood pressure, fasting blood glucose (FBG) body mass index (BMI) and waist circumference. Patients selected their pharmacist coach. Follow up appointments occurred monthly to quarterly. Appointments consisted of education, goal setting, and monitoring through evaluation of treatment goals and physical assessment. MAIN OUTCOME MEASURES Change from baseline in mean total cholesterol, serum triglycerides, high density lipoprotein (HDL) cholesterol, low density lipoprotein (LDL) cholesterol, systolic blood pressure (SBP) diastolic blood pressure (DBP) FBG, weight, BMI, waist circumference, health related quality of life (HRQoL) and patient satisfaction. RESULTS Patients' total cholesterol, LDL cholesterol, HDL cholesterol, DBP, and FBG were reduced significantly. Mean changes in triglycerides, SBP, weight, BMI, and waist circumference were not statistically significant. The 36 Item Short Form Health Survey version 2.0 showed improvements in both the Physical and Mental Component Summaries but did not reach statistical significance. More than 90% of patients were satisfied with the service and the care they received. CONCLUSION Wellness coaching by a pharmacist provided in a community pharmacy can result in significant improvements in cardiovascular risk factors, with a trend toward improved HRQoL. In addition, patients were satisfied with the wellness program from the start of the project.", "corpus_id": 25853960, "venue": "Journal of the American Pharmacists Association JAPhA", "year": 2013, "author_names": [ "K Didonato", "J Russell May", "Cameron C Lindsey" ], "n_citations": 33, "n_key_citations": 2, "score": 0 }, { "doc_id": "52164700", "title": "Blood pressure monitor validation, calibration, and community pharmacy practice: a pilot cross sectional survey in Hampshire, UK.", "abstract": "The blood pressure (BP) monitoring service offered by community pharmacy allows patients to have their BP measured and advice provided without visiting their general practitioner. Few studies have checked the validation and calibration status of monitors in community pharmacy practice. Lack of calibration can lead to poor readings, potentially leading to poor clinical decisions, increasing patient's treatment burden, costs, and reducing their quality of life [1] Validated monitors follow set accuracy criteria [2 4]", "corpus_id": 52164700, "venue": "Blood pressure monitoring", "year": 2018, "author_names": [ "Ravina Barrett" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "4224237", "title": "[A Questionnaire Survey on Cooperation between Community Pharmacies and Hospitals in Outpatient Chemotherapy Comparison of Roles of Pharmacists in Community Pharmacy and Hospitals]", "abstract": "Previous reports suggested that sharing outpatient information during chemotherapy is very important for managing pharmaceutical usage between community pharmacies and hospitals. We herein examined using a questionnaire survey whether pharmaceutical management for outpatient chemotherapy is desired by community and hospital pharmacists. The response rates were 44.3% (133/300) for pharmacists in community pharmacies and 53.7% (161/300) for pharmacists in hospitals. Prescriptions for outpatients during chemotherapy were issued at 88.2% of the hospitals. Currently, 28.9% of hospital pharmacists rarely provide pharmaceutical care, such as patient guidance and adverse effect monitoring, for outpatients receiving oral chemotherapy. Furthermore, whereas 93.7% of hospital pharmacists conducted prescription audits based on the chemotherapy regimen, audits were only performed by 14.8% of community pharmacists. Thus, outpatients, particularly those on oral regimens, were unable to receive safe pharmaceutical care during chemotherapy. Community pharmacists suggested that hospital pharmacists should use \"medication notebooks\" and disclose prescription information when providing clinical information to community pharmacists. They also suggested sending clinical information to hospital pharmacists by fax. On the other hand, hospital pharmacists suggested the use of \"medication notebooks\" and electronic medical records when providing clinical information to community pharmacists. In addition, they suggested for community pharmacists to use electronic medical records when providing clinical information to hospital pharmacists. As there may be differences in opinion between community and hospital pharmacists, mutual preliminary communication is important for successful outpatient chemotherapy.", "corpus_id": 4224237, "venue": "Yakugaku zasshi Journal of the Pharmaceutical Society of Japan", "year": 2018, "author_names": [ "Masaaki Ishibashi", "Masakazu Ishii", "Miku Nagano", "Yuji Kiuchi", "Sanju Iwamoto" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "3603079", "title": "Assessment of Direct Oral Anticoagulant Prescribing and Monitoring Pre and Post Implementation of a Pharmacy Protocol at a Community Teaching Hospital", "abstract": "Background Direct oral anticoagulants (DOACs) have become popular alternatives to vitamin K antagonists for the treatment and prevention of thromboembolic diseases; however, there are limited data regarding the appropriate use of DOACs in clinical practice. To ensure safety and efficacy of these medications, it is important that decisions regarding their use in patients rely on the available evidence. Objective The purpose of this study was to evaluate the appropriateness of DOAC prescribing in adult patients before and after the implementation of a pharmacist driven DOAC protocol. Methods Data were collected on adult patients admitted to a community teaching hospital who received DOAC therapy for at least 2 days between January and March 2015 (pre intervention group) and between January and March 2016 (post intervention group) These data were analyzed to measure inappropriately prescribed DOACs, defined based on DOAC indication, renal function, drug interactions, and other pertinent patient specific factors. Prior to the start of data collection for the post intervention group, a pharmacist driven protocol was developed and implemented. DOAC education was provided to pharmacists, including an evidence based prescribing table to guide appropriate DOAC therapy. Comparisons were made between the pre intervention and post intervention groups to determine the impact of the pharmacist driven service on appropriate DOAC prescribing. Results Fifty patients were analyzed in the pre intervention group compared with 85 patients in the post intervention group, with a total of 333 and 816 doses administered, respectively. Of the total doses administered, 32.4% were considered inappropriate in the pre intervention group compared with 13.8% in the post intervention group (adjusted odds ratio [OR] 0.42, 95% CI, 0.19 0.96; p 0.039) Conclusions Implementing a pharmacist driven DOAC service significantly improved appropriate prescribing of these agents. Provider education regarding DOAC use is essential to further increase appropriate prescribing of DOACs, optimize patients' therapy, and prevent adverse drug events.", "corpus_id": 3603079, "venue": "Hospital pharmacy", "year": 2017, "author_names": [ "Cristina Miele", "Mary Ann Taylor", "Aditi Shah" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "160024982", "title": "COMMUNITY PHARMACISTS PERCEPTION ON PATIENT COUNSELING AND CONTINUING PHARMACY EDUCATION PROGRAM IN EAST MALAYSIA", "abstract": "Nowadays, community pharmacist plays an important role in medication counseling, patients' side effects monitoring and drug information delivery. The need of patient counseling has become a vital part of the pharmacy practice and pharmaceutical care. Through Continuing Pharmacy Education (CPE) program, pharmacists can develop into professions in different areas including drug delivery, drug information, technology and patient education. This study was conducted to evaluate the perception of community pharmacists towards patient counseling and continuing education program in Sabah and Sarawak, East Malaysia. A cross sectional study design utilizing questionnaires was prepared by an extensive literature review. The research was carried out in four major areas in Sarawak; Sibu, Kuching, Bintulu and Miri and in three major areas Sabah; Kota kinabalu, Sepilok, Tawau by convenience sampling method. Descriptive analysis was conducted using SPSS version 18. Perception of community pharmacists towards patients counseling and continuing education program was analysed using scaling method. A cut off score of 25.8 was used to indicate the perception of community pharmacists. The Pharmacists scored a cut off point of 25.8 and above were considered to have good perception. A sample of 174 community pharmacists from Sabah and Sarawak were participated in this study. All of the respondents except one had positive perception towards patient counseling and continuing education program. Overall, almost all the community pharmacists had positive perception towards patient counseling and continuing education program in Sabah and Sarawak, East Malaysia. Further research is needed to evaluate perception of community pharmacists in different states of Malaysia and explore more on continuing education program in Malaysia.", "corpus_id": 160024982, "venue": "", "year": 2016, "author_names": [ "Kingston Rajiah", "Louise Ting", "C S Shan", "Leow Yeow Ming" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "21040978", "title": "Documentation Quality in Community Pharmacy: Completeness of Electronic Patient Records After Patients' First Visits", "abstract": "Background: When patients visit a community pharmacy for the first time, the creation of an electronic patient record (EPR) with relevant and up to date data is a prerequisite for adequate medication surveillance and patient counseling. Objective: To investigate the level of completeness of documentation in the EPR after a patient's first visit to a Dutch community pharmacy. Methods: In each participating pharmacy, newly enlisted <3 mo) patients to whom at least one medication had been dispensed were enrolled in this survey. For each patient who could be interviewed, pharmacy master students used a structured questionnaire to gather relevant, mandatory patient data (ie, basic characteristics, current drugs used, diseases, intolerabilities, specific conditions) and nonmandatory patient data (eg, diagnostic and monitoring data, personal experiences and habits, drug use problems) from the patient's EPR and from a structured telephone interview with the patient. Data retrieved from the patient's EPR were compared with data provided by the patient during the telephone interview. Results: Of 403 selected patients, 154 (38.2% could be interviewed by telephone. Poor documentation of telephone numbers in the EPR was the main reason for nonresponse (134/249) Interviewers found that 67.7% of prescription drugs, 0% of over the counter drugs, 19.6% of diseases, 3.7% of intolerabilities, and none of the specific conditions reported by patients had been documented in the EPR. Nonmandatory data (personal experiences and habits, drug use problems) reported during the patient interview had not been documented in the EPR. Conclusions: The EPR after a patient's first visit to the community pharmacy is often incomplete. For new patients, the pharmacist should more proactively and systematically gather patient information, and all relevant information should be recorded, preferably in coded form, in the pharmacy information system to allow more adequate clinical risk management.", "corpus_id": 21040978, "venue": "The Annals of pharmacotherapy", "year": 2009, "author_names": [ "Annemieke Floor-Schreudering", "Peter Agm de Smet", "Henk Buurma", "Antoine C G Egberts", "Marcel L Bouvy" ], "n_citations": 21, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "138774208", "title": "ISSN: 2278 1374 Review Article Nanosuspension Formulation: An Improved Drug Delivery System", "abstract": "Nanotechnology is the science that deals with the process that occurs at molecular level and of nano length scale size. Nano refers to the particle size range of 1 1000 nm. Nanosuspensions are coming under nanotechnology. A pharmaceutical nanosuspension is defined as very finely colloid, biphasic, dispersed solid drug particles in an aqueous vehicle, size below 1 um stabilized by surfactants and polymers prepared by suitable methods for drug delivery applications. It provides efficient delivery of hydrophobic drugs and increases the bioavailability. Nanosuspension is an attractive and promising technology to improve poor solubility and bioavailability of the drugs. This review article describes the methodsof preparation, characterization and applications of nanosuspensions in the field of pharmaceutical sciences.", "corpus_id": 138774208, "venue": "", "year": 2014, "author_names": [ "B Dineshkumar", "Kizhatil Krishnakumar", "Anish K John" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "138918809", "title": "ISSN: 2278 1374 Review Article Nanosuspension Technology in Drug Delivery System", "abstract": "Numbers of drug candidates are identified in drug discovery programs, but most of them are fairly poorly soluble. This challenges in pharma research to develop novel approaches to achieve a high solubility, stability and bioavailability of the drugs. Nanosuspensions are important carriers to develop novel drug formulations. Few techniques such as precipitation methods, milling methods and homogenization methods are developed to produce nanosuspension (NS) and have been successfully employed in large scale production. The benefits of NS are total avoidance of organic solvents during the production process and could be effectively used for large scale production. The advantages of nanosuspensions are (a) improved drug dispersibility and drug solubilization, increased therapeutic efficacy and reduced toxicity. Therefore, the present review described about achievements of nanosuspensions in drug delivery system in order to improve the solubility, stability and bioavailability of the drugs.", "corpus_id": 138918809, "venue": "", "year": 2013, "author_names": [ "B Dineshkumar", "Kizhatil Krishnakumar", "Anish K John", "David Paul", "Joseph Cherian" ], "n_citations": 3, "n_key_citations": 0, "score": 2 }, { "doc_id": "138024891", "title": "Review Article NANOSUSPENSION: A PROMISING DRUG DELIVERY SYSTEM", "abstract": "Solubility proves to be a major hurdle for the successful development and commercialization of new drug products. Since 40% of the active substances being identified through the new paradigm in high throughput screening are lipophilic. So, its viability as a potential new drug candidate reduces manifold. Because of this limitation, many pharmacologically active molecules have failed to reach the market. Therefore, Nanosuspensions have emerged as a promising strategy for the efficient delivery of hydrophobic drugs because of their versatile features and unique advantages. Techniques such as media milling and high pressure homogenization have been used commercially for producing nanosuspensions. Recently, the engineering of nanosuspensions employing emulsions and microemulsions as templates has been addressed in the literature. The unique features of nanosuspensions have enabled their use in various dosage forms, including specialized delivery systems such as mucoadhesive hydrogels. Rapid strides have been made in the delivery of nanosuspensions by parenteral, per oral, ocular and pulmonary routes. Currently, efforts are being directed to extending their applications in site specific drug delivery. The following work deals with the special features of nanosuspensions, the preparation methods, advantages of such methods, characterization of nanosuspensions, patents, marketed products and their applications for hoping to make easy, the future research in this area.", "corpus_id": 138024891, "venue": "", "year": 2012, "author_names": [ "Geeta Vikram Yadav", "Sushma R Singh" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "202117601", "title": "Nanosuspension in Drug Delivery A Review", "abstract": "Nanotechnology is the science that deals with the process that occurs at molecular level and of nano length scale size. Nano refers to the particle size range of 1 1000 nm. Nanosuspensions are coming under nanotechnology. A pharmaceutical Nanosuspension is defined as very finely colloid, biphasic, dispersed solid drug particles in an aqueous vehicle, size below 1 mm stabilized by surfactants and polymers prepared by suitable methods for drug delivery applications. It provides efficient delivery of hydrophobic drugs and increases the bioavailability. Nanosuspension is an attractive and promising technology to improve poor solubility and bioavailability of the drugs. This review article describes the methods of preparation, and applications of nanosuspensions in the field of pharmaceutical sciences.", "corpus_id": 202117601, "venue": "", "year": 2016, "author_names": [ "R K Jayaprakash", "Kizhatil Krishnakumar", "B Dineshkumar", "Rejin Jose", "Smitha K Nair" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "51807379", "title": "NANOSUSPENSION OF A DRUG AND ITS BIOLOGICAL ACTIVITY A REVIEW", "abstract": "With the modern technologies, a large number of drugs have been discovered which have better efficiency but their clinical applications are restricted due to poor solubility. Nearly 40% of the drugs have poor solubility. Poor water solubility has become a leading challenge for formulation of these compounds. Poor solubility is generally associated with poor bioavailability. Nanosuspension has the potential to overcome this issue. This review article outlines various techniques involved for preparation of nanosuspension and the enhancement of biological activities of drug when formulated into nanosuspension.", "corpus_id": 51807379, "venue": "", "year": 2016, "author_names": [ "Smitha K Nair", "Anish K John", "Kizhatil Krishnakumar" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "212499001", "title": "A REVIEW ON HERBAL DRUG NANOSUSPENSION", "abstract": "Nanosuspensions are important carriers to develop a novel drug formulation. Large proportions of newly discovered drugs are water insoluble, and therefore poorly bioavailable contributing to deserted development effort. The use of drug nanosuspension is a universal formulation approach to increase the therapeutic performance of these drugs in any route of administration. Poorly water Solubility and poor bioavailability of drugs can be improved by the nanosuspension technology. Medicinal plants or their phyto compunds are frequently considered to be less toxic and free from side effects than synthetic drugs. But formulation aspects of Medicinal plants or their phytocompunds are limited due to its poor water solubility. This article mainly focused on the nanosuspension plant natural products and their biological activities.", "corpus_id": 212499001, "venue": "", "year": 2015, "author_names": [ "", "Anish K John", "Dinesh Kumar" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "5225417", "title": "Nanosuspension: An approach to enhance solubility of drugs", "abstract": "One of the major problems associated with poorly soluble drugs is very low bioavailability. The problem is even more complex for drugs like itraconazole, simvastatin, and carbamazepine which are poorly soluble in both aqueous and nonaqueous media, belonging to BCS class II as classified by biopharmaceutical classification system. Formulation as nanosuspension is an attractive and promising alternative to solve these problems. Nanosuspension consists of the pure poorly water soluble drug without any matrix material suspended in dispersion. Preparation of nanosuspension is simple and applicable to all drugs which are water insoluble. A nanosuspension not only solves the problems of poor solubility and bioavailability, but also alters the pharmacokinetics of drug and thus improves drug safety and efficacy. This review article describes the preparation methods, characterization, and applications of the nanosuspension.", "corpus_id": 5225417, "venue": "Journal of advanced pharmaceutical technology research", "year": 2011, "author_names": [ "Vishal R Patel", "Yadvendra Kumar Agrawal" ], "n_citations": 314, "n_key_citations": 7, "score": 0 }, { "doc_id": "62887723", "title": "The impact of Critical Variables on properties of Nanosuspension: AReview", "abstract": "Solubility is a major problem for the successful development and commercialization of new drug products. At present about 40% of drugs in the development pipelines and approximately 70% of drugs coming from synthesis are poorly soluble. Number of approaches are available for addressing the issues of low aqueous solubility. Among them nanosuspension has gain popularity in pharmaceutical industry in the last 10 years, because of their unique advantages. Nanosuspensions are defined as sub micron colloidal dispersions of nanosized pure drug particles that are stabilized by a suitable polymer and/or surfactant and have a particle size of 1 1000 nm. Top down and bottom up technologies are the two primary approaches for nanosuspension production. This review article focus on different top down and bottom up technologies for the production of nanosuspension. The core objective of this review article is to focus on different critical variables affecting functional properties of nanosuspension.", "corpus_id": 62887723, "venue": "", "year": 2015, "author_names": [ "Koradia D Krishna", "Koradia Hiral", "Sheth Navin", "D Bedre Mahesh" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "214687490", "title": "Approaches to Improve Atorvastatin Calcium Bioavailability A Review H Review", "abstract": "Poor bioavailability is one among major challenges faced by the pharmaceutical drugs in the dosage form development. Atorvastatin (AST) is one among such challenging drugs facing poor bioavailability due to poor solubility. The objective of this article is to review the literature published in the selected search engines about the solubility bioavailability enhancement of AST. Literature was searched in the four databases Science direct, PubMed, Google scholar, and BASE engine. Seventy one articles related to atorvastatin formulations were selected from which 26 articles related to bioavailability enhancement were discussed. Further, various method of estimation of AST alone and in formulations were also compiled. Results: researches that the bioavailability could be improved by several methods including solid dispersion co crystallization, Microspheres, solid lipid nanoparticles, co solvency, and nanosuspension, self nano emulsifying drug delivery system (SNEEDS) Further, simple UV and HPLC methods could be used for the estimation of AST alone and in combination.", "corpus_id": 214687490, "venue": "", "year": 2020, "author_names": [ "Vedamurthy Joshi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "212455044", "title": "Nanosuspension Formulation: An Improved Drug Delivery System", "abstract": "Nanotechnology is the science that deals with the process that occurs at molecular level and of nano length scale size. Nano refers to the particle size range of 1 1000 nm. Nanosuspensions are coming under nanotechnology. A pharmaceutical nanosuspension is defined as very finely colloid, biphasic, dispersed solid drug particles in an aqueous vehicle, size below 1 mm stabilized by surfactants and polymers prepared by suitable methods for drug delivery applications. It provides efficient delivery of hydrophobic drugs and increases the bioavailability. Nanosuspension is an attractive and promising technology to improve poor solubility and bioavailability of the drugs. This review article describes the methodsof preparation, characterization and applications of nanosuspensions in the field of pharmaceutical sciences. (c) 2013 Universal Research Publications. All rights reserved INTRODUCTION Nanosuspension is submicron colloidal dispersion of drug particles. A pharmaceutical nanosuspension is defined as very finely colloid 1 biphasic 2 dispersed solid drug particles in an aqueous vehicle, size below 1 mm stabilized by surfactants 3 and polymers 4 prepared by suitable methods for drug delivery 5 applications. Nanosuspension have revealed their potential to solve the problem 6 associated with the delivery of poorly water soluble and poorly water and lipid soluble drugs. It enhances the absorption and bioavailability and help to reduces the dose of conventional oral dosage forms. Drug particle size reduction leads to an increase in the surface area and consequently the rate of dissolution as described by the noyes whitney 7 equation. In addition an increase in saturation solubility is postulated by the particle size reduction due to an increased dissolution pressure explained by the ostwald freundlich equation 8 .Depending upon the production technique applied changes in the cristaline structure of the drug particle may occur. An increase amount of amorphous drug fraction could induce higher saturation solubility. Nanosuspension not only solves the problem of poor solubility and poor bioavailability but also alters the pharmacokinetics of the drug and improves the drug safety and efficacy. Advantages: a. Most cost effective. b. Useful for poorly soluble drugs. c. Physically more stable than liposomes. d. Provide ease of manufacture and scale up for large scale production. e. Rapid dissolution and tissue targeting. f. Reduction in tissue irritation. g. Higher biavailability in occular and inhalational drug delivery. PREPARATION TECHNIQUES Techniques for the preparation of nanosuspension can be classified into two. Formulation of nanosuspension Table 1: Formulation consideration for nanosuspension Excepient Function Example Stabilizers Wet the drug particles thoroughly, prevent Ostwald's ripening and agglomeration of Nanosuspensions, providing steric or ionic barrier Lecithins, poloxamers, polysorbate, Cellulosics, povidones Cosurfactants Influence phase behavior when micro emulsions Are used to formulate nanosuspensions Bile salts, dipotassium glycerrhizinate, transcutol, glycofurol, Ethanol, isopropanol,", "corpus_id": 212455044, "venue": "", "year": 2014, "author_names": [ "Anish K John" ], "n_citations": 13, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "233990498", "title": "Performance Comparison of Various Digital Modulation Schemes based on Bit Error Rate under AWGN Channel", "abstract": "In 21st century most of the technology works is on digital mode whether it's AI or digital communication. Digital signals require modulation for transmitting data from one place to another. There are many techniques available for modulating digital signals but the most commonly used are Binary Amplitude Shift Keying (BASK) Binary Phase Shift Keying (BPSK) and Binary Frequency Shift Keying (BFSK) These techniques are selected on the basis of factors like low Signal to Noise Ratio (SNR) low Bit Error Rate (BER) complexity of design and final cost of the product etc. This paper will focus on the performance comparison of theoretical and simulated BER of above three schemes and then comparing the BER of all three schemes in same conditions and predicting the best technique for digital signal transmission. The simulation is done in the MATLAB software.", "corpus_id": 233990498, "venue": "2021 5th International Conference on Computing Methodologies and Communication (ICCMC)", "year": 2021, "author_names": [ "Naman Sharma", "Divanshu Jain", "Khushi Bhatt", "Milind Thomas Themalil" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "14006942", "title": "An analysis of BER comparison of various digital modulation schemes used for adaptive modulation", "abstract": "In this paper, a comparative analysis of BER performance of various higher order digital modulation techniques for channel utilization is proposed and the analysis are carried out with SNR as the reference parameter. This performance analysis yields to adaptive modulation technique which can be used to attain high spectral efficiency by modulating the signal at higher order modulation schemes based on channel state information (CSI) from the receiver. Signal over AWGN channel is assumed for the analysis. To achieve lower BER values for a specific SNR, techniques to alter signal characteristics like pulse shaping filters, matching filters and convolution encoding are applied and analysis are carried out. An observation from the above analysis produces lower BER. For 256 QAM at SNR of 20, BER of 4.76x10 3 and grey coded BER of 3.83x10 4 is obtained. Highest possible modulation technique is selected with lower BER obtained. Thus, spectral efficiency which is the prime objective of the proposed paper is achieved. The above results are computed and simulated using MATLAB.", "corpus_id": 14006942, "venue": "2016 IEEE International Conference on Recent Trends in Electronics, Information Communication Technology (RTEICT)", "year": 2016, "author_names": [ "Madugula Rajesh", "B K Shrisha", "N Mallikharjuna Rao", "H V Kumaraswamy" ], "n_citations": 11, "n_key_citations": 0, "score": 0 }, { "doc_id": "212596199", "title": "Comparison of BER for Various Digital Modulation Schemes in OFDM System", "abstract": "In this paper, an OFDM system model is developed for various digital modulation techniques BPSK, QPSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM, 256 QAM and 512QAM using simulation in Matrix laboratory language (MATLAB) on which BER calculations is carried out. The OFDM signal was transmitted over the AWGN channel for various signal to noise ratio (SNR) values. To evaluate the performance, for each SNR level, the received signal was demodulated and the received data was compared to the original information. The result of the simulation is shown in the plot of the bit error rate versus Eb /No, which provides information about the system's performance. The convolution coding and interleaving is applied to improve BER performance of OFDM system.", "corpus_id": 212596199, "venue": "", "year": 2016, "author_names": [ "Jaipreet Kaur", "Hardeep Kaur", "Manjit Sandhu" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "15402953", "title": "Comparison of BER Analysis in OFDM Using Linear and Cyclic Block Codes for Different Digital Modulation Techniques", "abstract": "Orthogonal frequency division multiplexing (OFDM) is a type of digital modulation technique which is used in wireless communication systems. It is an efficient multicarrier modulation technique, in which large bandwidth is divided into parallel narrow bands each of which is modulated by different subcarriers. All the subcarriers are orthogonal to each other and hence it reduces the interference among various subcarriers. But OFDM suffers from high peak to average power ratio(PAPR) high complexity in design. The performance parameter of OFDM can be measured in terms of Bit error rate (BER) Lower the BER value, higher is the efficiency of OFDM system. Various methods are used to enhance the BER performance. Channel coding is the one way of enhancing the BER. This paper discusses the performance of OFDM using linear cyclic block coding for different digital modulation techniques. Bit error rate (BER) is used to measure the performance of OFDM systems.", "corpus_id": 15402953, "venue": "2016 Second International Conference on Computational Intelligence Communication Technology (CICT)", "year": 2016, "author_names": [ "Pratima Manhas", "M K Soni" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "20846815", "title": "Comparison of Different Digital Modulation Techniques in LTE System using OFDM AWGN Channel: A Review", "abstract": "In this paper there is comparison of all the modulation techniques which are possible to be used in LTE systems in OFDM AWGN channel. BPSK, QPSK, 16QAM and 64QAM, so as to get the best one out of them on the basis of comparison parameters, bit error rate and signal to noise ratio because selection of adequate and suitable modulation technique is of utmost importance in wireless communication system .The paper gives modulation technique with least bit error rate and observes weather it is able to provide the required data rate in LTE systems.", "corpus_id": 20846815, "venue": "", "year": 2016, "author_names": [ "Swati Sharma", "Harjit Pal Singh" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "212575260", "title": "A comparison study on the SNR values by using digital modulation schemes with multiple fading channels", "abstract": "Signal to noise ratio is used as an indicator for evaluating the quality of communication. Due to this feature it is very important to estimate the SNR value for the modern wireless communication. In this paper a comparison study on the SNR value for different modulation schemes through fading channels is proposed. The proposed estimator is moment based one and performance evaluated on different channel conditions. For the performances analysis an expression for the moments of the received signals be developed .Modulation schemes like bipolar phase shift keying (BPSK) Quadrature amplitude modulation (QAM) and quadrature phase shift keying (QPSK) are performed for the SNR estimator. This estimator works on Additive White Gaussian Noise AWGN, Nakagami and Rayleigh fading channels. The existing model SNR estimation methods were degraded for higher level modulation scheme. As an extension we propose a moment based SNR estimator for different modulation scheme using AWGN, Rayleigh and Nakagami. Results provide that proposed estimator works better in low SNR conditions which are applicable to different communication scenarios.", "corpus_id": 212575260, "venue": "", "year": 2016, "author_names": [ "Ambily Govindan", "Jithin Jose Kallada" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "195702615", "title": "Bit Error Rate (BER) Comparison of AWGN Channels for Different Type's Digital Modulation Using MATLAB Simulink", "abstract": "The MATLAB software with relevant Toolboxes for developing Simulink model is used for the simulation of system. In this paper, three basic types of digital modulation techniques are discussed then the bit error rate performance characteristics of receiver are evaluated by using MATLAB Simulink model for FSK, PSK and QAM modulation techniques. There are various kinds of channel used in wireless communication In this paper, the AWGN channel is used between transmitter and receiver. This paper focuses on the characterization and the design of analog signal waveforms that carry digital information and compares their performance on an AWGN channel.", "corpus_id": 195702615, "venue": "", "year": 2015, "author_names": [ "Golam Sadeque Sadeque" ], "n_citations": 13, "n_key_citations": 0, "score": 1 }, { "doc_id": "15739002", "title": "Reliability Checking for Digital Modulation Schemes in 4G 5G Communication system: Comparison between QPSK and QAM Modulation Techniques for Beyond LTE", "abstract": "In recent days, there have been a race among the communication systems in different schemes and generations. Day by day the data transmission rate is increasing and breaking the record of previous generations. Now, people are thinking of transmitting data beyond imagination. Also, engineers and scientists are also stepping forward for transmitting in a huge range of data. In recent times, 4th Generation and 5th Generation communication system are on transitional state. 4th Generation is almost getting replaced with 5th Generation communication architecture. For LTE and beyond LTE communication system several types of digital modulation schemes are used. Among them QPSK and QAM are quite frequently used. In this research paper, comparative analysis over simulation in a virtual environment (Simulink Based) for these two types of digital modulation schemes in 4G and beyond 4G communication architecture. In both of the cases, BER (Bit Error Rate) with respect to SNR (Signal to Noise Ratio) have been compared for the better and efficient output.", "corpus_id": 15739002, "venue": "ICCCT '15", "year": 2015, "author_names": [ "Md Shoriful Islam", "Ahmed Al Amin", "Shuva Paul", "Intisar Tahmid" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "21735727", "title": "Performance Comparison of Radio over Fiber System Using WDM and OADM with Various Digital Modulation Formats", "abstract": "Radio over Fiber (RoF) is a technology where light is modulated with radio frequency signals and transmitted over the optical fiber to facilitate wireless access and transmission. The convergence of wired and wireless networks is a promising solution for the increasing demand of transmission capacity and flexibility, as well as offering economic advantages due to its broad bandwidth and low attenuation characteristics. The full duplex transmission of RoF is accomplished by means of Wavelength Division Multiplexing (WDM) and Optical Add Drop Multiplexer (OADM) where WDM enables transmission of different signals through a single mode fiber over large distance and OADM permits transmission of both down link and uplink data via the same single mode fiber. The performance analysis of RoF system employing various line coding techniques and digital modulation formats has also been done. The simulation and performance comparison of RoF was done using Optisystem 12.0.", "corpus_id": 21735727, "venue": "", "year": 2015, "author_names": [ "Arya Mohan" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "209778925", "title": "Realization of Multi Modulation Schemes for Wireless Communication by Time Domain Digital Coding Metasurface", "abstract": "Metasurfaces are well designed artificial periodic or quasiperiodic structures to achieve customized electromagnetic responses. Based on the time domain digital coding metasurface (TDCM) with dynamic reflection or transmission characteristics, one can realize direct information modulation on the metasurface, which has been used in wireless communications. In comparison with the classical architectures of wireless communication systems, the TDCM has advantages for simple architecture, easy manufacture, and low cost. However, the wireless communication systems based on the TDCM are still limited by low conversion efficiency, spectrum pollution, and hard to implement high order modulation schemes. To solve these limitations, we propose a new route to achieve multi modulation schemes in wireless communications by regulating the reflection phases of the TDCM in a nonlinear way. By carefully designing the regulation voltages applied to the diodes on TDCM, arbitrary constellation diagrams are successfully synthesized. The novel systems can implement various modulation schemes such as quadrature phase shift keying (QPSK) 8PSK, and 16QAM with good communication quality, high stability, and free scheme switching. The presented method may find important applications in modern wireless communication technologies.", "corpus_id": 209778925, "venue": "IEEE Transactions on Antennas and Propagation", "year": 2020, "author_names": [ "Jun Yan Dai", "Wankai Tang", "Liu Xi Yang", "Xiang Li", "Ming Zheng Chen", "Jun Chen Ke", "Qiang Cheng", "Shi Jin", "Tie Jun Cui" ], "n_citations": 25, "n_key_citations": 1, "score": 1 } ]

[ { "doc_id": "228918116", "title": "Blockchain Based Data Sharing for Decentralized Tourism Destinations Recommendation System", "abstract": "One thing that tourists need to plan their tourism activities is a recommendation system. The tourism destinations recommendation system in this study has three primary nodes, namely user, server, and sensor. Each node requires the ability to share data to produce recommendations that the user expects through their mobile devices. In this paper, we propose the data sharing system scheme uses a blockchain based decentralized network that each node can be connected directly to each other, to support the exchange of data between them. The block architecture used in the blockchain network has three main parts, namely block information, hashes, and data. Each type of node has a different structure and direction of data communication. Where the user node sends destination assessment data to the server node, then the server node sends data from the machine learning process to the user node. The sensor sends dynamic data about popularity, traffic, and weather to the user node as consideration for finalizing the generating recommendations process. In the process of sending data, each node in the blockchain network goes through several functions, including hashing, block validation, chaining block, and broadcast. We conduct web based experiments and analysis of the data sharing system to illustrate the system works. The experimental results show that the system handles data circulation with an average time of mine is 84.5 ms in sending multi criteria assessment data from the user and 119.1 ms in sending data of machine learning result from the server.", "corpus_id": 228918116, "venue": "", "year": 2020, "author_names": [ "Yunifa Miftachul Arif", "Hani Nurhayati", "Fachrul Kurniawan", "Supeno Mardi Susiki Nugroho", "Mochamad Hariadi" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "227172221", "title": "High Level Design and Rapid Implementation of a Clinical and Non clinical Blockchain Based Data Sharing Platform for COVID 19 Containment", "abstract": "As the world has moved toward rigorous containment measures due to the spread of a novel coronavirus, it is crucial to push the boundaries of clinical data obtaining methods using real time capturing facilities. During this time of crisis, data centric technologies that could provide authenticity and immediate access to patient data are essential. A blockchain based digital health protocol for access to real time data with user centric data protection measures can achieve these aims. Immediate and secure access to biomedical data can provide credible insights and also help in discovering intelligence to expediate the development of effective therapeutics. It also aids in altering policies for restrictions by extracting key insights required for modeling studies. This paper delivers a high level design of a blockchain based clinical research data collection and health service intervention platform, where the users can exercise control of data. This application also provides a platform to deliver technology based interventions which would assist in streamlining aid for vulnerable users to prevent the NHS from being overwhelmed. Further steps are also recommended to achieve a data compliant solution for rapid deployment, based on available resources, allowing a collaborative effort, which is extremely necessary at times of such crisis.", "corpus_id": 227172221, "venue": "Frontiers in Blockchain", "year": 2020, "author_names": [ "Sohag N Saleh", "Farabi Shayor" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "226285319", "title": "Data sharing: using blockchain and decentralized data technologies to unlock the potential of artificial intelligence: What can assisted reproduction learn from other areas of medicine?", "abstract": "The extension of blockchain use for nonfinancial domains has revealed opportunities to the health care sector that answer the need for efficient and effective data and information exchanges in a secure and transparent manner. Blockchain is relatively novel in health care and particularly for data analytics, although there are examples of improvements achieved. We provide a systematic review of blockchain uses within the health care industry, with a particular focus on the in vitro fertilization (IVF) field. Blockchain technology in the fertility sector, including data sharing collaborations compliant with ethical data handling within confines of international law, allows for large scale prospective cohort studies to proceed at an international scale. Other opportunities include gamete donation and matching, consent sharing, and shared resources between different clinics.", "corpus_id": 226285319, "venue": "Fertility and sterility", "year": 2020, "author_names": [ "Cristina Hickman", "Hoor Alshubbar", "Jerome Chambost", "Celine Jacques", "C Garcia de la Pena", "Andrew J Drakeley", "Thomas Freour" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "224818002", "title": "A Blockchain Platform for User Data Sharing Ensuring User Control and Incentives", "abstract": "We propose a new platform for user modeling with blockchains that allows users to share data without losing control and ownership of it and applied it to the domain of travel booking. Our new platform provides solution to three important problems: ensuring privacy and user control, and incentives for sharing. It tracks who shared what, with whom, when, by what means and for what purposes in a verifiable fashion. The paper presents a case study of applying the framework for a hotel reservation system as one of the enterprise nodes of Multichain which collects users' profile data and allows users to receive rewards while sharing their data with other travel service providers according to their privacy preferences expressed in smart contracts. The user data from the repository is converted into an open data format and shared via stream in the blockchain so that other nodes can efficiently process and use the data. The smart contract verifies and executes the agreed terms of use of the data and transfers digital tokens as a reward to the user. The smart contract imposes double deposit collateral to ensure that all participants act honestly. The paper also presents a performance evaluation of the new platform by analyzing latency and memory consumption with selected three test scenarios and measuring the transaction cost for smart contracts deployment. The results show that the node responded quickly in all our cases with a befitting transaction cost.", "corpus_id": 224818002, "venue": "Frontiers in Blockchain", "year": 2020, "author_names": [ "Ajay Kumar Shrestha", "Julita Vassileva", "Ralph Deters" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "222141558", "title": "The Data Sharing Scheme based on Blockchain", "abstract": "Data sharing is a vital method for data intensive and cooperative work based applications. A central database system, which collects and stores data generated from different parties and provides open access, can not only save costs on infrastructures, but also provide consistent and uptodate data for all the participants. However, privacy and security issues also emerge especially when the shared data is highly sensitive, such as electronic medical records (EMRs) In this paper, we propose a new data sharing scheme with access control based on CP ABE, searchable encryption, and blockchain. We realize two main goals in our scheme. First, data owners can share their data with multiple users who satisfy the access policy rather than just a single user. Second, the difficulty of the ciphertext query is overcome by means of searchable encryption technology. Most importantly, data owners do not need to interact with the data querier in the process of sharing. Both theoretical analysis and practical experiments show that the proposed scheme is secure and efficient.", "corpus_id": 222141558, "venue": "BSCI", "year": 2020, "author_names": [ "Xu Ma", "Chen Wang", "Laihua Wang" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "221617627", "title": "Blockchain Based Service Recommendation Supporting Data Sharing", "abstract": "With the rapid development of cloud computing, massive web services have appeared quickly with a heavy burden for user to choose services that they preferred. To cope with the stress, many recommendation algorithms have been proposed. Nonetheless, the recommendation effects were not ideal due to the insufficient data in a cloud platform. For this situation, it is necessary for cloud platforms to cooperate with each other to share data. However, the cloud platforms generally do not intend share the data because of the uses' privacy. Meanwhile, the traditional recommendation exist a series of challenges such as security and privacy, data tampering and so on. In order to address the above problems, we propose a blockchain based service recommendation scheme (BPDS SR) which can achieve a higher accuracy and lower cost with more profits.", "corpus_id": 221617627, "venue": "WASA", "year": 2020, "author_names": [ "Biwei Yan", "Jiguo Yu", "Yue Wang", "Qiang Guo", "Baobao Chai", "Suhui Liu" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "221406073", "title": "A blockchain based scheme for privacy preserving and secure sharing of medical data", "abstract": "How to alleviate the contradiction between the patient's privacy and the research or commercial demands of health data has become the challenging problem of intelligent medical system with the exponential increase of medical data. In this paper, a blockchain based privacy preserving scheme is proposed, which realizes secure sharing of medical data between several entities involved patients, research institutions and semi trusted cloud servers. And meanwhile, it achieves the data availability and consistency between patients and research institutions, where zero knowledge proof is employed to verify whether the patient's medical data meets the specific requirements proposed by research institutions without revealing patients' privacy, and then the proxy re encryption technology is adopted to ensure that research institutions can decrypt the intermediary ciphertext. In addition, this proposal can execute distributed consensus based on PBFT algorithm for transactions between patients and research institutions according to the prearranged terms. Theoretical analysis shows the proposed scheme can satisfy security and privacy requirements such as confidentiality, integrity and availability, as well as performance evaluation demonstrates it is feasible and efficient in contrast with other typical schemes.", "corpus_id": 221406073, "venue": "Computers Security", "year": 2020, "author_names": [ "Haiping Huang", "Peng Zhu", "Fu Xiao", "Xiang Sun", "Qinglong Huang" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "221161423", "title": "A Consent Model for Blockchain Based Health Data Sharing Platforms", "abstract": "In modern healthcare systems, the ability to share electronic health records is crucial for providing quality care and for enabling a larger spectrum of health services. Health data sharing is dependent on obtaining individual consent which, in turn, is hindered by a lack of resources. To this extent, blockchain based platforms facilitate data sharing by creating a trusted distributed network of users. These users are enabled to share their data without depending on the time and resources of specific actors (such as the health services) In blockchain based platforms, data governance mechanisms become very important due to the need to specify and monitor data sharing and data use conditions. In this article, we present a blockchain based data sharing consent model for access control over individual health data. We use smart contracts to dynamically represent the individual's consent over health data and to enable data requesters to search and access those data. The dynamic consent model extends to two ontologies: the Data Use Ontology (DUO) which models the individual consent of users and the Automatable Discovery and Access Matrix (ADA M) which describes queries from data requesters. We deploy the model on Ethereum blockchain and evaluate different data sharing scenarios. The contribution of this article consists of the creation of an individual consent model for health data sharing platforms. Such a model guarantees that individual consent is respected and that all the participants in the data sharing platform are accountable. The evaluation of our solution indicates that such a data sharing model provides a flexible decision making approach over data usage by data requesters. Our experimental evaluation shows that the proposed model is efficient and adapts to personalized access control policies in different data sharing scenarios.", "corpus_id": 221161423, "venue": "IEEE Access", "year": 2020, "author_names": [ "Vikas Jaiman", "Visara Urovi" ], "n_citations": 10, "n_key_citations": 0, "score": 0 }, { "doc_id": "222297781", "title": "Industrial Blockchain of Things: A Solution for Trustless Industrial Data Sharing and Beyond", "abstract": "Industrial Internet of Things (IIoT) is regarded as a promising transformation technology for manufacturing industry. We expect the information flow through along the process of material flow, gauging and collective devices feed IIoT platform with essential data. AI and big data analytical techniques can then be used to process the data to support a series of decision making. Users at both managerial and operational levels can take actions accordingly, which significantly improve management efficiency in one organization, enhance supply chain coordination, and attract investment, etc. Powerful as bigdata and AI technology, they cannot operate without data. In centralized, third party managed IIoT platform, few manufactures are willing to share their critical data. This study extends IIoT framework with blockchain technology to provide a solution for trustless data sharing. The solution embeds encrypted ledger to avoid credential data tampering, employs m in n out smart contracts to secure data exchange, and utilizes consensus mechanism to improve cyber security. The proposed framework integrates blockchain with IIoT to operate the entire industrial data exchange in a decentralized network, namely Industrial Blockchain of Things (IBoT)", "corpus_id": 222297781, "venue": "2020 IEEE 16th International Conference on Automation Science and Engineering (CASE)", "year": 2020, "author_names": [ "Zheng Zhang", "Liang Huang", "Renzhong Tang", "Tao Peng", "Lihang Guo", "Xing-wei Xiang" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "220735226", "title": "Blockchain Based Sharing and Tamper Proof Framework of Big Data Networking", "abstract": "With the development of information technology, big data has had a positive impact on the development of various industries. However, the continued growth of data has led to difficulties in data sharing. Blockchain, with its information sharing characteristics and decentralized management principles, is expected to become the new engine for building a future data sharing platform. Blockchain based data sharing is useful for recording user transactions and sharing of multi platform data. However, this technology not only has challenges in information storage, but also risks in third party transactions. In this article, we propose a big data sharing and transaction framework based on blockchain. This framework uses the blockchain decentralization and openness idea to establish a big data transaction platform for multiple users. For the problem of distributed secure storage of big data in the blockchain, we propose a data tamperproof mechanism that introduces a cryptographic algorithm to prevent transaction data from being tampered with during user storage. The purpose of this article is to ensure transaction security and data reliability when trading in the blockchain.", "corpus_id": 220735226, "venue": "IEEE Network", "year": 2020, "author_names": [ "Jiachen Yang", "Jiabao Wen", "Bin Jiang", "Huihui Wang" ], "n_citations": 19, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "142611072", "title": "Motivation and Personality", "abstract": "Perspectives on Sexuality Sex Research an Overview Part 1. Biological Perspectives: Sexual Anatomy 1. Sexual Physiology 2. Human Reproduction 3. Birth Control 4. Abortion Part 2. Developmental Perspectives: Childhood Sexuality 5. Adolescent Sexuality 6. Adult Sexuality 7. Gender Roles Part 3. Psychological Perspectives: Loving and Being Loved 8. Intimacy and Communication Skills 9. Enhancing your Sexual Relationships 10. Sexual Orientation 11. Sexual Behaviour 12. Sexual Variations 13. Coercive Sex the Varieties of Sexual Assault Part 4. Sexual Health Perspectives: Sexually Transmitted Diseases and Sexual Infections 14. HIV Infection and AIDS 15. Sexual Dysfunctions and Sex Therapy 16. Sexual Disorders and Sexual Health Part 5 Cultural Perspectives: Sex and the Law 17. Religious and Ethical Perspectives and Sexuality", "corpus_id": 142611072, "venue": "", "year": 1954, "author_names": [ "Abraham H Maslow" ], "n_citations": 20553, "n_key_citations": 1005, "score": 1 }, { "doc_id": "24948340", "title": "A social cognitive approach to motivation and personality", "abstract": "Past work has documented and described major patterns of adaptive and maladaptive behavior: the mastery oriented and the helpless patterns. In this article, we present a research based model that accounts for these patterns in terms of underlying psychological processes. The model specifies how individuals' implicit theories orient them toward particular goals and how these goals set up the different patterns. Indeed, we show how each feature (cognitive, affective, and behavioral) of the adaptive and maladaptive patterns can be seen to follow directly from different goals. We then examine the generality of the model and use it to illuminate phenomena in a wide variety of domains. Finally, we place the model in its broadest context and examine its implications for our understanding of motivational and personality processes. The task for investigators of motivation and personality is to identify major patterns of behavior and link them to underlying psychological processes. In this article we (a) describe a research based model that accounts for major patterns of behavior, (b) examine the generality of this model its utility for understanding domains beyond the ones in which it was originally developed, and (c) explore the broader implications of the model for motivational and personality processes.", "corpus_id": 24948340, "venue": "", "year": 1988, "author_names": [ "Carol S Dweck", "Ellen L Leggett" ], "n_citations": 7999, "n_key_citations": 703, "score": 1 }, { "doc_id": "229439176", "title": "Motivation and personality", "abstract": "", "corpus_id": 229439176, "venue": "", "year": 2020, "author_names": [ "Robert B Burns" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "51882054", "title": "Compulsive YouTube usage: A comparison of use motivation and personality effects", "abstract": "Abstract This paper explores compulsive use of YouTube by university students and investigates how the uses and gratifications perspective and the personality perspective work together to explain compulsive use of the social medium. It compares the effects of motivation to use YouTube for information with motivation to use the platform for entertainment, and examines how the different motivational effects compare with those of personality. It also explores the influence of compulsive use of YouTube on academic motivation. Data from 807 students at a Malaysian university were analysed using hierarchical multiple regression. Stronger motivation to use YouTube for information and learning is associated with lower compulsive use, while stronger motivation to use YouTube for entertainment is associated with higher compulsive use. Entertainment motivation has a stronger effect than information motivation. Although tendency to compulsive use differs with personality traits, the motivation effects are independent of personality. Compulsive YouTube use negatively influences academic motivation. While educators can take risks of compulsive use into account when they propose YouTube resources to their students, information literacy education and training can play an additional role in risk reduction by alerting social media users to the risks of compulsive use and helping them to develop self management strategies.", "corpus_id": 51882054, "venue": "Comput. Hum. Behav.", "year": 2018, "author_names": [ "Jane E Klobas", "Tanya Jane McGill", "Sedigheh Moghavvemi", "Tanuosha Paramanathan" ], "n_citations": 54, "n_key_citations": 5, "score": 0 }, { "doc_id": "191744585", "title": "Motivation and personality, 3rd ed.", "abstract": "", "corpus_id": 191744585, "venue": "", "year": 1987, "author_names": [ "Abraham H Maslow" ], "n_citations": 1371, "n_key_citations": 148, "score": 0 }, { "doc_id": "56402263", "title": "Motivation and Personality 1 Running Head: MOTIVATION AND PERSONALITY Motivation and Personality: A Neuropsychological Perspective", "abstract": "Personality is strongly influenced by motivation systems that organise responses to rewards and punishments and that drive approach and avoidance behavior. Neuropsychological research has identified: (a) two avoidance systems, one related to pure active avoidance and escape, and one to passive avoidance and behavioral inhibition produced by goal conflict; and (b) two approach systems, one related to the actions of reward seeking and one to experience and behavior related to pleasure on receiving reward. These systems mediate fluid moment by moment reactions to changing stimuli, with relatively stable person specific sensitivities to these stimuli manifested in personality traits. We review what is known about these motivational traits, integrating the theory driven approach based on animal learning paradigms with the empirical tradition of the Big Five personality model. Motivation and Personality 3 Motivation and Personality: A Neuropsychological Perspective People differ from one another, and this fact is obvious to everyone. It is common to talk about people's personalities using lexical terms to describe their characteristic ways of thinking, feeling and behaving (e.g. 'bold' 'lazy' 'intelligent' and we use these descriptors to infer people's intentions and likely future behavior. Personality psychologists have long analyzed the ratings of large numbers of trait descriptive adjectives to produce the most widely used taxonomy of personality: the Big Five, which includes the dimensions of Extraversion, Neuroticism, Conscientiousness, Agreeableness, and Openness to Experience/Intellect (John, Naumann, Soto, 2008) These Big Five traits also emerge from existing personality questionnaires that are not designed specifically to measure them (e.g. Markon, Krueger, Watson, 2005) suggesting it is a good candidate for a consensual model in personality psychology. What the Big Five model does not immediately offer, however, is an explanation for the causal sources of personality traits. Why do people think, feel, and act in the ways that they do? People react to situations, of course; but different people react differently to the same situation, suggesting that they have different behavioral propensities. In order to answer this why question, we must discover what drives people's actions and reactions. Inferring motivation from observed personality has been something of a dark art in psychology. However, one promising approach to this question is based on the biology of motivational control systems, studied by psychologists for over a century in non human animals, and for somewhat less time in humans. This approach operates on the premise that stable individual differences in behavior (personality traits) must be due to relatively stable individual differences in the operation of brain systems that produce (state) Motivation and Personality 4 behavior from moment to moment. From this perspective, each of our many traits reflects the operations of a set of brain systems that has evolved to respond to a different class of functional requirements (Denissen Penke, 2008; McNaughton, 1989; Nettle, 2006; Pickering, Gray, 1999) In what follows, we focus on those motivational processes and personality traits most closely aligned with biological research on reactions to reward and punishment and associated approach and avoidance behavior. This focus is warranted both by the importance of these phenomena for motivation and by the existence of extensive research on them. Our aim is to offer an introduction for researchers wishing to explore the role of motivation in personality from the perspective of these underlying psychobiological systems. Only after a description of what is known about the operation of these systems do we branch out to consider the personality traits associated with them. Our major assumption is that most fundamental personality traits have a motivational core; and we aim to show that the descriptive personality research tradition, which produced the Big Five, can be integrated with the experimental research tradition that has focused on the sensitivities of basic motivation systems. In this review, we focus on systems related to approach and avoidance primarily at the level of explanation that Gray (1975) labeled 'the conceptual nervous system' which is based on analysis of behaviour as well as neurobiology and attempts to describe important psychological processes without specifying their exact instantiation in the nervous system this approach has afforded a detailed analysis of reactions to classes of motivationally significant stimuli and can be used to derive predictions concerning the functions of the real nervous system (e.g. in fMRI studies) Rather than going into Motivation and Personality 5 extensive detail regarding the biological basis of the systems, we focus primarily on their functions, discussing biological evidence only when it is necessary for addressing some functional question. Approach Avoidance Theories of Motivation and Their Relation to Personality The most important classes of motivational stimuli can be grouped into 'rewards' and 'punishments' Animals can be seen as cybernetic systems with attractors and repulsors (positive and negative goals) that have evolved to promote survival and reproduction (Carver Scheier, 1998; DeYoung, 2010d) Without a tendency to approach beneficial stimuli (e.g. food, drink, and sexual mates) and to avoid aversive stimuli (e.g. predators and poisons) a species would not survive. 'Reward' and 'punishment' may seem straightforward concepts, but they hide some non obvious complexities. For the classical behaviorist, rewards increase the frequency of the behavior leading to them, whereas punishments decrease the frequency of behavior leading to them. That is, a 'reward' is something a person will work to obtain; and a 'punishment' is something a person will work to avoid. But the behaviorist definition of 'reward' also includes a different class of stimuli, namely the termination or omission of expected punishment. The effect on behavior and emotion of the 'hope' of achieving a reward is similar to that of anticipated 'relief' from avoiding a punishment. Similarly, although a 'punishment' can be described as something people will work to avoid or escape from (or which they will attack defensively) the omission of an expected reward is experienced as punishing; an effect known as fustrative nonreward. Thus, 'fear' has important similarities with 'frustration' (For further discussion of this literature, see Corr McNaughton, 2012. Motivation and Personality 6 These complexities can be understood straightforwardly from the cybernetic perspective, in which rewards are any stimuli that indicate progress toward or attainment of a goal, whereas punishments are any stimuli that disrupt progress toward a goal. However, in any experimental situation, it is necessary to confirm that the subject perceives stimuli as actually rewarding and punishing, as there are likely to be significant individual differences in how people react to the same stimuli (for further discussion of this point, see Corr, 2012) Current approach avoidance theories trace their origins to early researchers who posited that two motivation/emotion processes underlie behavior (e.g. Mowrer, 1960; Konorski, 1967; Schneirla, 1959) one related to reward (approach behavior and positive emotions) the other to punishment (avoidance behavior and negative emotions) Neuroscience measures, including pharmacological manipulation, of neural activity, and neuroanatomical studies, have been used to investigate the neuropsychological systems that underlie reactions to these classes of stimuli, providing confirmation of the hypothesis that distinct systems underlie reward and punishment related motivation (Gray McNaughton, 2000) This animal based work migrated into personality psychology in the 1970s via Jeffrey A. Gray (e.g. 1970, 1972a,b, 1975, 1977) whose Reinforcement Sensitivity theory (RST) argued that the major traits of personality reflect long term stabilities in systems that mediate reactions to different classes of reinforcing stimuli, generating emotion and shaping 'motivating' approach and avoidance behavior. The leap from understanding motivational systems to understanding personality traits requires the Motivation and Personality 7 postulate that relatively stable individual differences exist in the operations of these brain behavioral systems. A personality trait can be defined as a probabilistic constant in equations that predict the frequency and intensity with which individuals exhibit various motivational states, as well as the behavioral, emotional, and cognitive states that accompany these motivational states (Fleeson, 2001; Fleeson Gallagher, 2009; DeYoung, 2010c) (Note that this assumes exposure of the population to a normal range of situations; if situations are limited to prevent exposure to some trait relevant class of situations, then individual differences in that trait may not be manifest. A neuropsychological approach to personality aims to understand both the biological systems that are responsible for the states associated with any given trait and the parameters of those systems that cause them to differ across individuals. The systems themselves will be present in every intact human brain, but the values of their parameters will vary from person to person. Thus, for example, all people have brain systems that respond to punishments, but in different individuals these systems respond differently to a given stimulus. It is the typical level of response of such a system in any given individual, averaged across different situations, that is associated with that individual's score on the personality trait in question. This is not to imply that an individual will respond the same way in all situations; rather, it implies that knowing the stre", "corpus_id": 56402263, "venue": "", "year": 2017, "author_names": [ "Philip J Corr", "Colin G DeYoung", "Neil McNaughton" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "55528882", "title": "Motivation and Personality: A Neuropsychological Perspective", "abstract": "Personality is strongly influenced by motivation systems that organise responses to rewards and punishments and that drive approach and avoidance behavior. Neuropsychological research has identified: (a) two avoidance systems, one related to pure active avoidance and escape, and one to passive avoidance and behavioral inhibition produced by goal conflict; and (b) two approach systems, one related to the actions of reward seeking and one to experience and behavior related to pleasure on receiving reward. These systems mediate fluid moment by moment reactions to changing stimuli, with relatively stable person specific sensitivities to these stimuli manifested in personality traits. We review what is known about these motivational traits, integrating the theory driven approach based on animal learning paradigms with the empirical tradition of the Big Five personality model.", "corpus_id": 55528882, "venue": "", "year": 2013, "author_names": [ "Philip J Corr", "Colin G DeYoung", "Neil McNaughton" ], "n_citations": 192, "n_key_citations": 14, "score": 0 }, { "doc_id": "10310766", "title": "Control your game self: effects of controller type on enjoyment, motivation, and personality in game", "abstract": "Whether they are made to entertain you, or to educate you, good video games engage you. Significant research has tried to understand engagement in games by measuring player experience (PX) Traditionally, PX evaluation has focused on the enjoyment of game, or the motivation of players; these factors no doubt contribute to engagement, but do decisions regarding play environment (e.g. the choice of game controller) affect the player more deeply than that? We apply self determination theory (specifically satisfaction of needs and self discrepancy represented using the five factors model of personality) to explain PX in an experiment with controller type as the manipulation. Our study shows that there are a number of effects of controller on PX and in game player personality. These findings provide both a lens with which to view controller effects in games and a guide for controller choice in the design of new games. Our research demonstrates that including self characteristics assessment in the PX evaluation toolbox is valuable and useful for understanding player experience.", "corpus_id": 10310766, "venue": "CHI", "year": 2013, "author_names": [ "Max Valentin Birk", "Regan Lee Mandryk" ], "n_citations": 103, "n_key_citations": 4, "score": 0 }, { "doc_id": "43102072", "title": "Motivation and personality traits for choosing religious tourism. A research on the case of Medjugorje", "abstract": "Religion has long been a primary motivation for journeys and it is considered the oldest non economic reason for travelling. The purpose of this paper is to investigate the reasons tourists choose to travel to sacred sites, with the specific aim of discovering relationships between personality traits and motivations for religious travel. Participating in the research were 679 Italian travellers to Medjugorje sanctuary, who completed the travel motivation scale and big five questionnaire. The results show that motivation is focused prevalently on the need for discovery in men and socialisation in women. Multiple regression analyses demonstrated that personality traits are predictive of motivation factors differently for males and females.", "corpus_id": 43102072, "venue": "", "year": 2013, "author_names": [ "Costanza Scaffidi Abbate", "Santo Di Nuovo" ], "n_citations": 42, "n_key_citations": 2, "score": 0 }, { "doc_id": "143936882", "title": "Motivation and personality of preservice teachers in Croatia", "abstract": "The study presents results founded upon the Factors Influencing Teaching Choice scale validation and the relations between personality traits and motivation for teaching in Croatia. A sample of 374 first year preservice teachers from three universities participated in the study. Confirmatory factor analysis of the items comprising the Croatian version of the FIT Choice scale provided support for its construct validity following the omission of six items with low factor loadings. Personality dimensions of the five factor model provided a set of theoretically meaningful relations with the specific motivational factors determining the choice of teaching profession. In line with previous studies, our results showed that personality traits better predicted intrinsic motivation compared to extrinsic motivation. Two interpersonal dimensions, extraversion and agreeableness, were significant predictors of intrinsic career value, but also of satisfaction with the choice of this profession. Extraversion also predicted ability, whereas agreeableness demonstrated positive relations with social utility value motivations for a teaching career.", "corpus_id": 143936882, "venue": "", "year": 2012, "author_names": [ "Ivana Jugovic", "Iris Marusic", "Tea Pavin Ivanec", "Vlasta Vizek Vidovic" ], "n_citations": 66, "n_key_citations": 7, "score": 0 } ]

[ { "doc_id": "221335343", "title": "Leucopenia, Neutropenia, Lymphopenia and Monocytopenia in a 15 year Old Girl with Iron Deficiency Anemia Responding to Iron Therapy: A Case Report", "abstract": "Despite the high prevalence of iron deficiency anemia (IDA) in children, extensive information about its impact on growth and cognitive functions, less is known about how it affects the non erythrocytes cell lines and its implications. High erythropoietin levels in severe iron deficiency anemia may down regulate the production of non erythroid precursors resulting in various cytopenia, however, the mechanism of this is not fully understood. Reports depicting the association of iron deficiency anemia with cytopenia is quite scarce in pediatric population. We report a case of a 15 year old girl presented with severe iron deficiency anemia and leucopenia, lymphopenia, neutropenia and monocytopenia who has no other evidence of bone marrow dysfunction. The patient responded to iron therapy with prompt reversal of all cell counts. It is therefore recommended to include iron study and plasma erythropoietin concentration in the evaluation of otherwise healthy children presenting with cytopenia. Likewise, to consider iron deficiency in the causative list of non erythroid cytopenia such as neutropenia.", "corpus_id": 221335343, "venue": "", "year": 2020, "author_names": [ "Sam Hassan", "Tessy Augustine", "Nidal Mahgoub" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "203527768", "title": "Current and Future Issues in Global Children Health and Care", "abstract": "", "corpus_id": 203527768, "venue": "Acta Scientific Paediatrics", "year": 2019, "author_names": [ "S M Quamrul Hassan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151236071", "title": "Newborn BCG Vaccinations: Scar Formation and Tuberculin Conversion Rates: A Retrospective Study", "abstract": "Through this study, we aimed to determine the Bacillus Calmette Guerin (BCG) vaccination uptake by scar formation rate following newborn BCG vaccinations and tuberculin conversion in a tertiary hospital setting in Dubai, United Arab Emirates. A retrospective cohort analysis was conducted on 945 babies vaccinated with BCG during 1 January and 31 December 2017. All babies were administered with intradermal 0.05 ml of BCG in the left deltoid. The descriptive variables include vaccination coverage. The outcome data includes follow up at 2, 4, and 6 months for scar formation, Mantoux test results, and revaccination data. Out of 945 babies, 911 (96.4% were vaccinated by trained nurses with BCG after birth and before being discharged. This was following written consent from parents who were well informed by the details of the vaccinations. The non vaccinated babies 34 (3.6% were from different resident nationalities and the parents declined the BCG vaccine. Reason for such decline is not documented but it is likely because in their home country such vaccines are not routinely given. The number of babies who did not return for follow up was 483 (53% These babies were followed by other centers or outside the country hence were not included in the study. The number of babies followed up with no record on BCG scar was 334 out of the total number of 482 (78% BCG scar formation was recorded in 84 babies (19.6% followed up. Scar formation failure was recorded in 10 (2.3% Six babies (60% of those who had no scar had Mantoux test performed. The association between absence of scar and negative Mantoux results were highly significant (P< 0.05) with 100% of babies having negative Mantoux results, therefore, no immunity. It is concluded that BCG scar is poorly recorded similarly to other high income countries. There is a good correlation between lack of BCG scar and no immunity to Tuberculosis. Improvement of newborn BCG uptake is importantly needed. It is recommended to introduce mandatory recording of the outcome of BCG scar formation and resultant outcomes in the vaccinations books. Training of personnel administering the BCG vaccination is an important element for successful vaccination in this vulnerable age group.", "corpus_id": 151236071, "venue": "", "year": 2019, "author_names": [ "Hanieh Tabatabaei", "Sam Hassan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "108711481", "title": "Recurrent Peeling of Skin Following Post Streptococcal Atypical Kawasaki Disease: A Case Report and Literature Review", "abstract": "Kawasaki disease (KD) is a systemic vasculitis occurring due to collective immune mechanisms in a genetically susceptible individual, triggered by infections, though the actual cause is yet to be determined. KD is the most common cause of coronary heart disease in children. Typical diagnostic criteria are fever more than 4 days plus four of clinical criteria of cervical lymphadenopathy, skin rashes, mucus membrane redness and lip changes, non purulent conjunctivitis, peripheral changes in palms and feet. In atypical cases three criteria with fever are enough to commence treatment and echocardiograph early. An often reported association with KD is streptococcal infections. Skin peeling occurs in both conditions, however in streptococcal infections it occurs early while late during convalescence stage in KD except peeling of the genitocrural area that may occurs early. Skin peeling in the streptococcal infection is related to exotoxin while the cause of the peeling in KD is not well known; but it is likely related to the immunological pathogenesis. Another type of skin peeling that occurs recurrently following the initial attack of KD in many months is of an unknown reason. The presentation in this report is exceptional; it is for the first time reporting association of atypical KD presented with post streptococcal complications and vitamin D deficiency followed by the skin re peeling 6 months after the patients fully resolved. Moreover, it is for the first time reporting nail changes, painful micturition due to urethral involvement and mucus membrane erythema that all resolved without treatment. The cause possibly is related to innate immune mechanism post infections and possible role for vitamin D deficiency paving the way for the post group A streptococcal (GAS) vasculitis which is an immune response that later acted to trigger the skin peeling. Patient initially presented with significant peeling of streptococcal infections and features of KD responding to monoclonal antibody. This case highlights that clinicians need to know about recurrent peeling following KD in many months and to make the parents aware about its harmless course. It is the first report of association of post streptococcal atypical KD vasculitis, vitamin D deficiency, skin harmless post KD skin peeling, nail changes, mucus membrane erythema and painful micturition due to urethral involvement. Int J Clin Pediatr. 2019;8(1):12 18 doi: https:/doi.org/10.14740/ijcp319", "corpus_id": 108711481, "venue": "", "year": 2019, "author_names": [ "Sam Hassan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151269083", "title": "Radio Nuclear Investigations in Children Aged 16 Years and Younger with Confirmed Urinary Tract Infection: A Cross Sectional Retrospective Study", "abstract": "A retrospective cross sectional study conducted at Mediclinic City Hospital; a teaching hospital in collaboration with Mohammad Bin Rashid University for Medicine and health sciences in Dubai, United Arab Emirates (UAE) The aim of this study is to ascertain conduction of renal radio nuclear investigations, explicitly Kidney ureter bladder ultrasound scans (KUB US) Micturating cystourethrogram (MCUG) and Dimercaptosuccinicacid (DMSA) in children following Urinary Tract Infection (UTI) based on; age, type of UTI, and recurrence. Medical records of 421 patients aged 0 16 years with UTI were retrospectively studied. Sociodemographic variables were age, gender, type of UTI, and recurrence. Results showed that the most carried out investigation was KUB US (38.2% (n=161) In children aged between 7 months and 3 years, 15% (n=8) of them had VUR or renal scarring, while only12% (n=11) of children aged 3 years showed abnormal MCUG or DMSA regardless of the KUB US results. Interestingly more than half (56% (n=236) of all patients (n=421) with recurrent UTI showed abnormalities by MCUG and or DMSA, while only 12.3% (n=14) of children with atypical UTI showed abnormalities. It is concluded that VUR and renal scarring predominantly occurred in patients with recurrent UTI and atypical UTI. Thus, children presenting with recurrent UTI are recommended to undergo MCUG and DMSA after the second recurrent episode rather than waiting for the third UTI incident. This study suggests that children aged 7 months to 3 years post UTI should undergo KUB US, MCUG (if it was a recurring UTI) plus DMSA or MAG3 with post micturition study instead. Children older than 3 years presenting with recurrent UTI are recommended to undergo DMSA (regardless of the US results) and MAG3 with post micturition study or MCUG especially if DMSA is abnormal. Keeping in mind, evaluating risk factors like family and past medical history are crucial before conducting any investigation, this is to avoid unnecessary scans, and at the same time implement measures to reduce risks resulting from complicated UTIs.", "corpus_id": 151269083, "venue": "", "year": 2019, "author_names": [ "Reem Al Suwaidi", "Sam Hassan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "195793415", "title": "Onychomadesis (Nails Shedding) Secondary to Enterovirus Herpangina Like Infection and Without the Skin Manifestations of Hand Foot Mouth Disease", "abstract": "Onychomadesis or onycholysis is a newly recognized complication in the course of viral infections particularly the Hand Foot Mouth Disease (HFMD) in children and adults. Onychomadesis is characterized by proximal separation of the nail plate from the nail matrix due to temporary cessation of growth of the nail matrix. The etiology of onychomadesis is including infections, trauma, medications side effects, systemic diseases and idiopathic. The association of the HFMD and the onychomadesis first reported in the year 2000. Since then, few studies and case reports published illustrating the relationship of the HFMD and the resultant onychomadesis 4 to 8 weeks after the resolution of the HFMD. HFMD is a relatively common viral infection, especially in children of preschool age. It is usually presented with characteristic eruption on hands, feet and mouth. Out breaks may happen in nurseries and schools. HFMD usually caused by enteroviruses, most commonly, Coxsackie virus A (CVA) and enterovirus 71 (EV71) It is usually self limiting disease however; serious neurological complications have been reported with EV71. The enteroviruses that cause HFMD and nail changes may cause herpangina which is unlike the HFMD, usually characterized by mouth spots on the soft palate without the skin manifestations, however onychomadesis was not reported before with herpangina. This case presented with no HFMD eruption but small red spots on the soft palate consistent with herpangina. Enterovirus was isolated from throat swab and the onychomadesis occurred 1 month after the resolution of the soft palate spots. It is the first case report about nail changes occurring after herpangina presentation. It is therefore important that in patients presented with onychomadesis to consider the review of the patient's history not only for HFMD but herpangina and possible other EV infections, 8 weeks before the nail changes, to avoid unnecessary referrals, concerns and over investigations. The exact mechanism of the nail changes is not yet known and a review of theories behind the nail damage will be considered in this report.", "corpus_id": 195793415, "venue": "", "year": 2019, "author_names": [ "Sam Hassan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "135114930", "title": "Stimulating rooting of guava cuttings by chemical and physical treatments", "abstract": "This study was conducted during two successive seasons 2014 and 2015 at the nursery of Pomology department, Faculty of Agriculture, Cairo University, Egypt. It is aimed to investigate the influence of wounding, sucrose (1% and antioxidant (mixture of 5% citric acid 5% ascorbic acid) either alone or in combination with 0, 3000 and 5000 ppm IBA on rooting of guava softwood cuttings. Results showed that IBA at 3000 ppm was more efficient compared with the IBA at 5000 in promoting rooting, root length, weight and number. Wounding and antioxidant improved rooting and root parameters. The application of IBA at 3000 either alone or accompanied with antioxidant significantly increased rooting percent, root length, and number. Results indicated that IBA increased root weight through increasing root number rather than root length of guava cuttings.", "corpus_id": 135114930, "venue": "", "year": 2018, "author_names": [ "T F El-Sharony", "Ahmed A Rashedy", "Abdou M Abd Allatif", "S A M Hassan" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "150297755", "title": "Renal Tuberculosis in a 14 Years Old Boy Presented as Pyrexia of an Unknown Origin (PUO) A First Case Report", "abstract": "Tuberculosis remains an important public health problem, especially in developing countries. Mycobacterium Tuberculosis mainly affects the lungs but extra pulmonary Tuberculosis is not uncommon. However, renal involvement is very rare particularly in paediatric age group. This article is reporting a case of 14 years old Emirati boy who presented with history of fever, mild cough and night sweats after admission. The patient was treated as a case of fever of unknown origin, most likely secondary to community acquired pneumonia. On further investigations, he was found to have pulmonary tuberculosis with miliary pattern of the both lungs and also renal tuberculosis as the urine culture grew Acid Fast Bacilli (AFB) (Mycobacterium Tuberculosis) The patient responded very well to the Anti tuberculosis treatment and became symptom free.", "corpus_id": 150297755, "venue": "", "year": 2018, "author_names": [ "Sam Hassan", "Ali Hassan Abro" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "55496056", "title": "Post Streptococcal Syndrome in a 5 Years Old Boy with Sever Vitamin D Deficiency Only Responding to Monoclonal Antibody: First Case Report", "abstract": "Despite the reduction in incidence of Group A Streptococcal (GAS) infections in the last few decades its global burden on mortality and morbidity remained significantly high and represent major concerns in many developing countries. These morbidities and mortalities can be serious in immunocompromised individuals. It has been shown for the last two decades that vitamin D plays an important role in the immune system modulation and its deficiency were associated with recurrent and sever infections. Only few literatures were written about the vitamin D deficiency and GAS infections and very scarce about its complications. One of the rarely reported complications of GAS infections is post streptococcal systemic vasculitis. The association of this complications and the vitamin D deficiency was not reported before. We report for the first time a 5 years old boy presented with sever post scarlet fever vasculitis with sever vitamin D deficiency, only responded to monoclonal antibody infusion. The presentation was complicated by more than one complications of GAS infection, hence difficult to diagnose initially and found to have sever vitamin D deficiency which we concluded is the causative factor for these complications. On correction of vitamin D level the deranged immunological and other factors causing the vasculitis were corrected subsequent to vitamin D correction. It is therefore recommended to check vitamin D concentration in cases of sever GAS especially in association with its complications such as the systemic vasculitis.", "corpus_id": 55496056, "venue": "", "year": 2018, "author_names": [ "Sam Hassan", "Farsheed Zakir", "Sameer Sajwani" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "54498885", "title": "Unusual Case of Coloboma of the Iris with Dextrocardia and Criss Cross Heart Presented Later with Left Sided Diaphragmatic Hernia: First Case Report", "abstract": "Coloboma of the iris (CI) is an embryonic condition resulted from an incomplete formation of the iris which either presented unilateral or bilateral and as a single eye defect or in association of other eye anomalies. It happens either as an isolated condition or as part of syndromic features or other associations that are well reported in literatures. Coloboma of the iris has been reported in association with diaphragmatic hernia and in some syndromes with dextrocardia. It can happen in families with genetic presentation looks like autosomal dominant pattern, however other genetic pattern were also reported. The combination of CI, dextrocardia, Criss Cross Heart (CCH) which is a rare condition by itself and the congenital diaphragmatic hernia (CDH) has not been reported before. This report is about an unusual case of a boy presented after birth with left sided CI associated with dextrocardia and CCH, who presented later at the age of 16 months with left sided congenital diaphragmatic hernia that was not been diagnosed early. As far as this search for the English literatures concerned, this is the first report of this exclusive association. It is therefore, highly recommended to investigate cases of CI for an associated CDH especially if it is associated with congenital heart defects such as dextrocardia and CCH.", "corpus_id": 54498885, "venue": "", "year": 2018, "author_names": [ "Sam Hassan", "Sameer Sajwani", "Pramond Warhekar", "Ghassan Nakib", "Syed Bilal Rizvi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "30019588", "title": "Transparent Data Encryption Solution for Security of Database Contents", "abstract": "The present study deals with Transparent Data Encryption which is a technology used to solve the problems of security of data. Transparent Data Encryption means encrypting databases on hard disk and on any backup media. Present day global business environment presents numerous security threats and compliance challenges. To protect against data thefts and frauds we require security solutions that are transparent by design. Transparent Data Encryption provides transparent, standards based security that protects data on the network, on disk and on backup media. It is easy and effective protection of stored data by transparently encrypting data. Transparent Data Encryption can be used to provide high levels of security to columns, table and tablespace that is database files stored on hard drives or floppy disks or CD's, and other information that requires protection. It is the technology used by Microsoft SQL Server 2008 to encrypt database contents. The term encryption means the piece of information encoded in such a way that it can only be decoded read and understood by people for whom the information is intended. The study deals with ways to create Master Key, creation of certificate protected by the master key, creation of database master key and protection by the certificate and ways to set the database to use encryption in Microsoft SQL Server 2008.", "corpus_id": 30019588, "venue": "ArXiv", "year": 2013, "author_names": [ "Anwar Pasha Deshmukh", "Riyazuddin Qureshi" ], "n_citations": 39, "n_key_citations": 2, "score": 1 }, { "doc_id": "20181133", "title": "An Appraisal to Assess the Security of Database Configurations", "abstract": "Database Management Systems (DBMS) have a long tradition in high security and several mechanisms needed to protect data have been proposed/consolidated in the database arena. However, the effectiveness of those mechanisms is very dependent on the actual configuration chosen by the database administrator. Tuning a large database is quite complex and achieving high security is a very difficult task that requires a lot of expertise and continuous and proactive work. In this paper we present an assessment tool aimed at evaluating the security of DBMS configurations. The proposed tool is simple and effective, and can be used by administrators with very little security knowledge. We evaluate the tool by performing the assessment of four different real database installations based on four well known and widely used DBMS engines.", "corpus_id": 20181133, "venue": "2009 Second International Conference on Dependability", "year": 2009, "author_names": [ "Afonso Araujo Neto", "Marco Paulo Amorim Vieira", "H Madeira" ], "n_citations": 18, "n_key_citations": 0, "score": 1 }, { "doc_id": "167591480", "title": "Study on Security of Database", "abstract": "Based on the analysis of database security system,five database security management methods were presented in this paper.", "corpus_id": 167591480, "venue": "", "year": 2011, "author_names": [ "Qiao Jin-you" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "65391829", "title": "Principles of Database Security", "abstract": "Database Security, is a current steering topic among academicians, researchers and industry. This book is designed to give a broad overview of strategies to secure data efficiently. The modern trends of database security have been dealt from basic principles and terminologies in easily understandable English language so as to enable the reader to understand with minimal effort. Several algorithms are discussed with experimental evaluation which makes the book a practical guide for students who wish to work in the area of database security.This book would serve as an ideal guide for B.E. B.Tech. B.S. B.Sc, B.C.A. undergraduate students of Computer Science, Information Technology, Electronics Communication who wish to take up projects on database security. Students pursuing postgraduate course in Science and Engineering, M.E. M.Tech. M.S. M.Sc. M.C.A. students will find this book useful for their projects. Research Scholars working in the area of database security will find this book as a handy reference guide for their M.Phil. and Ph.D. works. Software Engineers involved in IT and ITES sector specifically working on databases would find this book as a useful resource", "corpus_id": 65391829, "venue": "", "year": 2014, "author_names": [ "S Balamurugan", "Sampath Charanyaa" ], "n_citations": 29, "n_key_citations": 0, "score": 1 }, { "doc_id": "112790326", "title": "Security of Database", "abstract": "Today, a lot of government departments and merchandising concern store a large amount of information in the computer database and as important resources,which are even linked to the rise and decline of enterprise and department. With the wide application of the computer database system, the security of database is being paid attention to by us too.", "corpus_id": 112790326, "venue": "", "year": 2005, "author_names": [ "Qin Li-bo" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "17154602", "title": "On the Security of Password Manager Database Formats", "abstract": "Password managers are critical pieces of software relied upon by users to securely store valuable and sensitive information, from online banking passwords and login credentials to passport and social security numbers. Surprisingly, there has been very little academic research on the security these applications provide.", "corpus_id": 17154602, "venue": "ESORICS", "year": 2012, "author_names": [ "Paolo Gasti", "Kasper Bonne Rasmussen" ], "n_citations": 57, "n_key_citations": 9, "score": 1 }, { "doc_id": "64154780", "title": "The security of database server", "abstract": "The importance of database security was expatiated and the types of database security leaks were explained briefly from the aspects of database complexity, damage caused by inferior database security and the foundation of database etc. SQL Server and Oracle were taken as examples to introduce the immature aspects of database security characteristics, database password management, operating system back door and other database leak areas. The database security was summarized. New demonstrations of the database security preservation were put forward. And a beneficial trial on preserving database security and on structuring database was made.", "corpus_id": 64154780, "venue": "", "year": 2004, "author_names": [ "Han-Jyun Su" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "64089578", "title": "Information security of database networks", "abstract": "", "corpus_id": 64089578, "venue": "", "year": 1990, "author_names": [ "Hirotsugu Kinoshita", "Shigeo Tsujii" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "32934976", "title": "A Generic Construction of Quantum Oblivious Key Transfer Based Private Query with Ideal Database Security and Zero Failure", "abstract": "Higher security and lower failure probability have always been people's pursuits in quantum oblivious key transfer based private query (QOKT PQ) protocols since Jacobi et al. [Phys. Rev. A 83, 022301 (2011) proposed the first protocol of this kind. However, higher database security generally has to be obtained at the cost of a higher failure probability, and vice versa. Recently, based on a round robin differential phase shift quantum key distribution protocol, Liu et al. [Sci. China Phys. Mech. Astron. 58, 100301 (2015) presented a private query protocol (RRDPS PQ protocol) utilizing ideal single photon signal which realizes both ideal database security and zero failure probability. However, ideal single photon source is not available today, and for large database the required pulse train is too long to implement. Here, we reexamine the security of RRDPS PQ protocol under imperfect source and present an improved protocol using a special \"low shift and addition\" (LSA) technique, which not only can be used to query from large database but also retains the features of \"ideal database security\" and \"zero failure\" even under weak coherent source. Finally, we generalize the LSA technique and establish a generic QOKT PQ model in which both \"ideal database security\" and \"zero failure\" are achieved via acceptable communications.", "corpus_id": 32934976, "venue": "IEEE Transactions on Computers", "year": 2018, "author_names": [ "Chun-Yan Wei", "Xiao-Qiu Cai", "Bin Liu", "Tianyin Wang", "Fei Gao" ], "n_citations": 100, "n_key_citations": 0, "score": 0 }, { "doc_id": "64752606", "title": "Continuous Auditing of Database Applications: An Embedded Audit Module Approach1", "abstract": "This paper demonstrates an approach to address the unique control and security concerns in database environments by using audit modules embedded into application programs. Embedded audit modules (EAM) are sections of code built into application programs that capture information of audit significance on a continuous basis. The implementation of EAMs is presented using INGRESS a relational database management system. An interface which enables the auditor to access audit related information stored in the database is also presented. The use of EAMs as an audit tool for compliance and substantive testing is discussed. Advantages and disadvantages of employing EAMs in database environments and future directions in this line of research are discussed.", "corpus_id": 64752606, "venue": "", "year": 2018, "author_names": [ "S Michael Groomer", "Uday S Murthy" ], "n_citations": 37, "n_key_citations": 0, "score": 0 } ]