nils-herrmann/clean_scirepeval huggingface dataset:
The Greenstream: Geological hazards to a submarine pipeline
Year: 2014

Treball final presentat per en Marc Pascual Pifarre pel Master de Recursos Minerals i Riscos Geologics Especialitat: Riscos Geologics de la Universitat de Barcelona (UB) i la Universistat Autonoma de Barcelona (UAB) realitzat sota la direccio del Dr. Roger Urgeles Esclasans de l'Institut de Ciencies del Mar (ICM CSIC) 24 pages, 28 figures, 3 tables
Stock Market Analysis with Text Data: A Review
Venue: ArXiv
Year: 2021

Stock market movements are influenced by public and private information shared through news articles, company reports, and social media discussions. Analyzing these vast sources of data can give market participants an edge to make profit. However, the majority of the studies in the literature are based on traditional approaches that come short in analyzing unstructured, vast textual data. In this study, we provide a review on the immense amount of existing literature of text based stock market analysis. We present input data types and cover main textual data sources and variations. Feature representation techniques are then presented. Then, we cover the analysis techniques and create a taxonomy of the main stock market forecast models. Importantly, we discuss representative work in each category of the taxonomy, analyzing their respective contributions. Finally, this paper shows the findings on unaddressed open problems and gives suggestions for future work. The aim of this study is to survey the main stock market analysis models, text representation techniques for financial market prediction, shortcomings of existing techniques, and propose promising directions for future research.
Embedding sustainability into a utility's business culture
Year: 2012

Engagement with sustainability can be conceptualized as a journey in which initiatives involving management, employees, stakeholders, and the community gradually facilitate changes in direction and attitude that are in line with sustainability principles. This view holds that an organization's culture is a key point of leverage in any attempt to move to a business model more closely aligned with sustainability concepts. Building on this view, an approach was developed in which business decisions were analyzed in order to assess the sustainability culture of a water utility. This article presents an overview of this research, including background on how an organization's culture can influence decisions. A method for analyzing decision making from the perspective of sustainability policy is demonstrated using a case study undertaken with an Australian public water utility.
EFFECT OF INTERACTIVE VIDEO LENGTH WITHIN E LEARNING ENVIRONMENTS ON COGNITIVE LOAD, COGNITIVE ACHIEVEMENT AND RETENTION OF LEARNING
Year: 2020

The importance of using the interactive video has been widely recognized in e learning courses. However, there are several variables that can affect learners' engagement and their learning through watching digital interactive videos. the main purpose of this study is to examine whether long interactive videos can improve students' performance in tests, retention of learning in the long term, and reduce the cognitive load compared to medium and short videos. An experimental research was conducted on a sample of (63) students of the Faculty of Education at Imam Abdul Rahman University bin Faisal who are registered to study both the courses of Education Technology (EDUM 195N) and Design and Production of Multimedia (EDUM 330N) A three group experimental design was used. The results were analyzed and interpreted in the light of cognitive load theory and Cognitive Theory of Multimedia Learning. In light of the research findings, the researcher presented a set of recommendations for use in the design and development of content of interactive digital video based learning environments. The research results can mainly benefit stakeholders and education practitioners, specifically universities, schools, and companies in providing interactive digital video based learning and training in e learning and distance learning environments.
Superior Slurry Erosion Behavior of a Casting NiCoCrFeNb0.45 Eutectic High Entropy Alloy
Venue: Acta Metallurgica Sinica (English Letters)
Year: 2020

The flow passage components in hydraulic machinery will be eroded rapidly when running in sand water. The wear resistance of materials commonly used in hydraulic machinery needs to be improved to prevent the failure of hydraulic machinery. New wear resistant materials are urgently needed to improve the service life of hydraulic machinery. Eutectic high entropy alloy (EHEA) is a new kind of alloys with in situ lamellar structure. NiCoCrFeNb0.45 EHEA has combined excellent strength and toughness. In this study, slurry erosion tests of NiCoCrFeNb0.45 EHEA were carried out with different impact angles and impact velocities using a rotary jet erosion test apparatus. The NiCoCrFeNb0.45 EHEA exhibited significant slurry erosion resistance compared with medium carbon steel 1045 and stainless steel 04Cr13Ni5Mo. The erosion rate of EHEA is much slower. Compared with medium carbon steel and stainless steel, the erosion of EHEA is completed via the accumulation and removal of platelets after plowing and work hardening, accompanied by partial micro cutting.
Supply Chain Risk Management in Financial Crises A Multiple Case Study Approach
Year: 2011

Supply Chain Risk Management has become a key concern for organizations, which is even further emphasized by the current economic and financial crisis. Against this background, this paper investigates successful approaches and experiences by companies in dealing with this new reality, especially as it concerns the supply side. Using in depth case studies conducted among eight European enterprises, we develop a set of propositions about how companies manage supply risks in financial crises, highlight how their risk management approaches have shifted, and illustrate how they are related to Enterprise Risk Management. Our framework is further differentiated based on whether firms are predominantly engaged in manufacturing or services a factor influencing how supply chain risk is managed. Transaction cost economics serves as our main theoretical anchor. By rigorously grounding our research in both theory and empirical evidence, we provide valuable insight for both academia and practice.
Superconductivity at ~70 K in Tin Hydride SnHx under High Pressure
Year: 2021

Various tin hydrides SnHx (x 4, 8, 12, 14) have been theoretically predicted to be stable at high pressures and to show high critical temperature superconductivity with Tc ranging from about 70 to 100 K. However, experimental verifications for any of these phases are still lacking to date. Here, we report on the in situ synthesis, electrical resistance, and synchrotron x ray diffraction measurements of SnHx at 200 GPa. The main phase of the obtained sample can be indexed with the monoclinic C2/m SnH12 via comparison with the theoretical structural modes. A sudden drop of resistance and the systematic downward shift under external magnetic fields signals the occurrence of superconductivity in SnHx at Tc 70 K with an upper critical field m0Hc2(0) 11.2 T, which is relatively low in comparison with other reported high Tc superhydrides. Various characteristic superconducting parameters are estimated based on the BCS theory.
A Low cost RFID/GPS Location Sensing Algorithm for Urban Infrastructure
Venue: Int. J. Online Eng.
Year: 2015

Low cost Radio Frequency Identification (RFID) location sensing algorithm is practical and crucial for urban infrastructure location. Current RFID location algorithms are based on fixed multiple RFID reader or reference points (reader or tag) with known position, which is cost and difficult to deployment in urban environment. The objective of this study is to develop a low cost location sensing algorithm using RFID technique to locate urban infrastructure. This paper presents an algorithm based on multilateration with the integration of mobile RFID and Global Position System (GPS) The mobility of RFID reader can measure many distances between different RFID reader positions and target tag which represent multilateration. The GPS provides coordination of RFID reader. The location of tag is calculated based on triangle geometric property. The redundant observation is adopted to get the optimum location. In practice, the only one RFID reader is necessary, thus the cost is reduced hardly. The performance and accuracy assessment are conducted in field experiment. The experiment proves that the proposed low cost location sensing algorithm is able to location the urban infrastructure with smaller position error. The lower cost makes it even more economically feasible than other algorithm.
MODERN PRODUCTION TRENDS OF FERMENTED MEAT PRODUCTS
Year: 2019

The work aims to the generalization and analysis of the main problems of production of fermented meat products, which are reflected in scientific publications of the meat processing industry experts. The modern researches of scientists all over the world are aimed to the achievement of bio and microbiological safety, structure formation, use of new kinds of raw materials, features of color formation, formation of sensory properties, increase of biological value of smoked and uncooked products. The work emphasizes that the quality of finished products and the stability of the technological process depends on the quality of raw materials, the properties of their own microbiota of raw materials and/or introduced starter cultures of microorganisms. The possibility of improving the sanitary condition of raw materials and reducing the impact of pathogenic microorganisms due to the use of ultrasound, hydrostatic high pressure, high intensity pulsating electric field, cold plasma are described in the work. Also, in addition to physical processing methods, the use of competing microflora, extracts of spicy aromatic plants, combining salt mixtures, packaging are effective. It is stated that the formation of the structure of the finished product depends on the parameters of the technological process, the activity of exo endoenzymes and prescription composition. It is shown that the color of fermented meat products and their stability depend on the content of natural pigments and the conditions of their interaction with nitrites under the action of microorganisms with nitrite reductase activity and pH of the environment. The possibility of obtaining a characteristic pink red color of meat products without the use of nitrites was noted. The results of investigations of the possibility of varying the organoleptic parameters of the finished product by modeling the ingredient composition and fermentation conditions are presented. The possibilities of creation of new types of fermented meat products of functional purpose by the introduction of o 3 fatty acids, probiotics, macro microelements and more are described.
Scrambling embedding for JPEG compressed image
Venue: Signal Process.
Year: 2015

This paper proposes a novel reversible unified information hiding method for the JPEG compressed image, aiming to achieve scrambling and external data insertion simultaneously. The properties of DC coefficients, energy of AC coefficient block, and run of zero AC coefficients are exploited. Two techniques are proposed to degrade the perceptual quality while manipulating the DCT coefficients for data embedding. Most of the existing unified information hiding methods are designed to operate in the spatial domain and their direct application to the compressed domain such as JPEG will lead to large bitstream size increment. Thus, the proposed techniques aim to minimize the bitstream size increment while offering comparable performance with respect to the current state of the art methods. Experiments are conducted to measure the performance of the proposed unified method by using the UCID (Uncompressed Color Image Database) database and standard test images. Results suggest that the effective data payload ranging from 32 to 10238 bits and SSIM value ranging from 0.0548 to 0.9432 are achieved for the UCID database. The proposed method are also compared with the conventional methods in terms of effective data payload, image quality degradation, bitstream size increment and robustness against multiple sketch attacks. HighlightsDegrade image quality while embedding external data in a JPEG compressed image under a single framework.Achieve scrambling embedding using the properties derived from the components (i.e. DC coefficient and AC coefficient) of a JPEG compressed image.Minimize the bitstream size increment caused by scrambling embedding, which is inevitable for the conventional methods.Achieve scalability in both image quality degradation and data payload.Achieve complete reversibility.
Study on tribological behavior of composite laminated material of monoaxial stretched PTFE film
Year: 2017

By taking the chloroprene rubber plate as the backing material, with monoaxial stretched PTFE film as the surface layer, epoxy resin as binder, the samples of composite laminated material of monoaxial stretched PTFE film were formed on a hot press process. The tribological behavior of composites was tested on different test conditions by MMW 1A friction and wear tester. After testing, the worn surface and the transfer film was inspected and analyzed with KH 7700 3D video microscope. Results show that the materials with added PTFE film have better tribological properties than the basal materials and the friction coefficient dropped from 0.465 to 0.165. The load and sliding speed effect significantly on the tribological behavior of composite laminated material of monoaxial stretched PTFE film. The friction coefficient and wear rate of the composite laminated material is the lowest when the working condition is 125N, 20 rpm.
Molecular Identification of Methicillin Resistant Staphylococcus aureus Isolated from Patients with Wound Infections in Khartoum Teaching Hospital, Sudan
Year: 2011

Antimicrobial resistance has become a great public health problem worldwide and multi drug resistant Staphylococcus aureus was widely reported. The presence or absence of methicillin resistance gene mecA) in 48 clinical wound isolates of S. aureus was examined by the polymerase chain reaction (PCR) The results were analyzed in relation to the disk diffusion method of oxacillin (1ug) PCR was amplified at a sequence of mecA gene at 1319 bp of 9 (18.75% isolates, and were identical to those of disk diffusion test. All strains were studied for their susceptibility to traditionally used antibiotics. The results revealed that the drug of choice for the treatment of Methicillin Resistant Staphylococcus aureus (MRSA) and Methicillin Sensitive Staphylococcus aureus (MSSA) was vancomycin and multi drug resistance was common among MRSA strains. The study concluded that wound infections showed common multiple antibiotic resistant of MRSA and the PCR assay was found to be reliable and more accurate to detect MRSA infection.
The Development of Inter sexual Relationship in Margaret Atwood's Novels
Year: 2010

Margaret Atwood,a famous Canadian writer,poet,and literary critic,usually studies inter sexual relationship in her poetry and especially in her novels.To some extent,her novels are the microfilm version of the human inter sexual relationship.Inter sexual relationship is the basis and driving force for human survival,and a guarantee required for human development.Otherwise,the survival of the whole human will be threatened seriously.The inter sexual relationship in her novels undergoes development and changes clearly according to her different writing stages.
A FTP Mutual Authentication Scheme Based on Dynamic Password
Year: 2010

FTP is a file transfer protocol among computers and has been widely used for many years.However,it transmits both passwords and files in plaintext,thus is of the inherent security deficiency.With the continuous development of network applications,FTP has become a major means for information transmission in the government and enterprises.The transmission of sensitive information in plaintext form and with no effective authentication and security transmission mechanisms would do damage and hard to the state and enterprises.Therefore,the security of FTP communication system is particularly important.Based on the construction of secure FTP communication system,this paper first analyzes the deficiency of traditional FTP identity authentication,and compares the present use authentication technologies,and then proposes a mutual authentication scheme based on dynamic password in combination of HASH function,symmetric encryption,and challenge/response mechanism.Finally,analysis on the scheme indicates that this scheme is of such capabilities as protection of user identity information,prevention of ID authentication attack,including playback attack,impersonation attack,etc.,and could achieve mutual authentication.
Measuring Time Sensitive and Topic Specific Influence in Social Networks With LSTM and Self Attention
Venue: IEEE Access
Year: 2020

Influence measurement in social networks is vital to various real world applications, such as online marketing and political campaigns. In this paper, we investigate the problem of measuring time sensitive and topic specific influence based on streaming texts and dynamic social networks. A user's influence can change rapidly in response to a new event and vary on different topics. For example, the political influence of Douglas Jones increased dramatically after winning the Alabama special election, and then rapidly decreased after the election week. During the same period, however, Douglas Jones' influence on sports remained low. Most existing approaches can only model the influence based on static social network structures and topic distributions. Furthermore, as popular social networking services embody many features to connect their users, multi typed interactions make it hard to learn the roles that different interactions play when propagating information. To address these challenges, we propose a Time sensitive and Topic specific Influence Measurement (TTIM) method, to jointly model the streaming texts and dynamic social networks. We simulate the influence propagation process with a self attention mechanism to learn the contributions of different interactions and track the influence dynamics with a matrix adaptive long short term memory. To the best of our knowledge, this is the first attempt to measure time sensitive and topic specific influence. Furthermore, the TTIM model can be easily adapted to supporting online learning which consumes constant training time on newly arrived data for each timestamp. We comprehensively evaluate the proposed TTIM model on five datasets from Twitter and Reddit. The experimental results demonstrate promising performance compared to the state of the art social influence analysis models and the potential of TTIM in visualizing influence dynamics and topic distribution.
Reimagining Middle Eastern Order after the Arab Uprisings
Year: 2017

After seven years, the Arab Uprisings have been given many interpretations and problematised in more than one ways. The political economy, human rights and justice, Islamic awakening, terrorism and extremism and most important the conspiracy theories produced by each stakeholder. The causes notwithstanding, its implications are of long lasting nature for the region's historical, sociological and political imagination. The continuity of post colonial and post Ottoman order was challenged by the weakening of the nation states against global forces, the conflict between the status quoists and forces of change, mainly the social, political and strategic faultiness. The old order, despite its undemocratic and despotic roots, monarchies, military generals or the authoritarian rulers, has been able to resist these forces and faultiness, strengthening the narratives that Muslim societies do not want or they are not fit for democratic governance. What has happened between 2011 and 2013 were not just political happenings, they were and continue to remain the source of political re imagination, particularly against the forces of status quo. Counter revolutions in Egypt, Libya, Yemen and Syria might have restored the old post colonial order, they remain more vulnerable to to the existing fault lines. What has not been sufficiently recognised that the forces of change, diverse and divergent, have so far failed to produce an alternative model of power, and its distribution among the stakeholders? Islamists, Marxists, liberals, nationalists and clerics have found it convenient or tactically useful to not challenge the old order and remain in alliance with the ruling elites in one way or the other. With global forces and deepening fault lines, the opposition forces broke away and the neoliberal economy took the main role in shaping the political re imagination. As the old order started breaking, the opposition forces were already decaying. Their understanding of change and alternative order has failed to mobilise and unite the mass opinion and assure a smooth transition. The paper attempts to analyse how the old order is facing a serious challenge and the oppositional forces have failed to evolve an alternative vision for a new order they wanted to bring.
Clinic Management System: Business Process Re engineering based on User Experience (UX)
Venue: Journal of Physics: Conference Series
Year: 2019

Clinic management systems function is to arrange and organize the inherent process in the health facility to be harmonized with the patient's demand. The purpose of this paper is to analyse the common themes to be used in user interface of the application through identification of user specification based on the context. The user experience has been utilized to consider the critical aspect of successes of implementation related to human factor of mental model, which are utility, ease of use and efficiency. The contribution of this paper is twofold. Firstly, the design process should be done through tremendous re design of primary business process to obtain excessive improvement in the capacity, capability and quality of the service. Secondly, the information presentation should be provided in alternative way involving the effort to have more platform and modes to increase accessibility and availability.
Management of traumatic arteriovenous fistula affecting the posterior tibial artery with a PK Papyrus coronary covered stent
Venue: ANZ journal of surgery
Year: 2019

particularly high >50% risk of strangulation. To date, successful laparoscopic repair of adult left paraduodenal hernias has been described in 33 cases internationally. Increasing expertise in laparoscopy coupled with preoperative diagnosis on imaging has led to a trend away from laparotomy. A retrospective review by Jeong et al. showed that laparoscopic repair was more likely to result in a shorter hospital stay, earlier intake of diet, less post operative ileus and better cosmesis thereby providing a better outcome than laparotomy. We agree that laparoscopy provides superior outcomes and advocate this as an initial surgical approach. Definitive repair requires reduction of the hernia content and either direct closure or widening of the hernia orifice, the latter of which was performed in our patient. The critical step is identification and dissection of the IMV and left colic artery vessels. A traditional literature review of case reports, case series and published abstracts for laparoscopic repair describes a mean length of stay 3.4 days, a 3% incidence of recurrence and a 3% incidence of IMV injury. In summary, although paraduodenal hernias are a rare cause of intestinal obstruction, the authors recommend having a low threshold of suspicion and investigating further with CT imaging. We believe laparoscopy is safe in experienced hands and will become the initial operation of choice for the surgical management of internal hernias.