bluuebunny/crossref_metadata_2025 huggingface dataset:
High Dimensional Clustering with r-nets
Authors: Avarikioti Georgia , Ryser Alain , Wang Yuyi , Wattenhofer Roger
Published: September 2019

Clustering, a fundamental task in data science and machine learning, groups a set of objects in such a way that objects in the same cluster are closer to each other than to those in other clusters. In this paper, we consider a well-known structure, so-called r-nets, which rigorously captures the properties of clustering. We devise algorithms that improve the runtime of approximating r-nets in high-dimensional spaces with1 and `2 metrics from, where . These algorithms are also used to improve a framework that provides approximate solutions to other high dimensional distance problems. Using this framework, several important related problems can also be solved efficiently, e.g.,pproximate kth-nearest neighbor distance-approximate Min-Max clustering,-approximate k-center clustering. In addition, we build an algorithm that-approximates greedy permutations in time O˜((dn+n2−α)·logΦ) where Φ is the spread of the input. This algorithm is used to -approximate k-center with the same time complexity.
Mode Variational LSTM Robust to Unseen Modes of Variation: Application to Facial Expression Recognition
Authors: Baddar Wissam J. , Ro Yong Man
Published: September 2019

Spatio-temporal feature encoding is essential for encoding the dynamics in video sequences. Recurrent neural networks, particularly long short-term memory (LSTM) units, have been popular as an efficient tool for encoding spatio-temporal features in sequences. In this work, we investigate the effect of mode variations on the encoded spatio-temporal features using LSTMs. We show that the LSTM retains information related to the mode variation in the sequence, which is irrelevant to the task at hand (e.g. classification facial expressions). Actually, the LSTM forget mechanism is not robust enough to mode variations and preserves information that could negatively affect the encoded spatio-temporal features. We propose the mode variational LSTM to encode spatio-temporal features robust to unseen modes of variation. The mode variational LSTM modifies the original LSTM structure by adding an additional cell state that focuses on encoding the mode variation in the input sequence. To efficiently regulate what features should be stored in the additional cell state, additional gating functionality is also introduced. The effectiveness of the proposed mode variational LSTM is verified using the facial expression recognition task. Comparative experiments on publicly available datasets verified that the proposed mode variational LSTM outperforms existing methods. Moreover, a new dynamic facial expression dataset with different modes of variation, including various modes like pose and illumination variations, was collected to comprehensively evaluate the proposed mode variational LSTM. Experimental results verified that the proposed mode variational LSTM encodes spatio-temporal features robust to unseen modes of variation.
Deep Neural Network Quantization via Layer-Wise Optimization Using Limited Training Data
Authors: Chen Shangyu , Wang Wenya , Pan Sinno Jialin
Published: September 2019

The advancement of deep models poses great challenges to real-world deployment because of the limited computational ability and storage space on edge devices. To solve this problem, existing works have made progress to prune or quantize deep models. However, most existing methods rely heavily on a supervised training process to achieve satisfactory performance, acquiring large amount of labeled training data, which may not be practical for real deployment. In this paper, we propose a novel layer-wise quantization method for deep neural networks, which only requires limited training data (1% of original dataset). Specifically, we formulate parameters quantization for each layer as a discrete optimization problem, and solve it using Alternative Direction Method of Multipliers (ADMM), which gives an efficient closed-form solution. We prove that the final performance drop after quantization is bounded by a linear combination of the reconstructed errors caused at each layer. Based on the proved theorem, we propose an algorithm to quantize a deep neural network layer by layer with an additional weights update step to minimize the final error. Extensive experiments on benchmark deep models are conducted to demonstrate the effectiveness of our proposed method using 1% of CIFAR10 and ImageNet datasets. Codes are available in: https://github.com/csyhhu/L-DNQ
Efficient Online Learning for Mapping Kernels on Linguistic Structures
Authors: Da San Martino Giovanni , Sperduti Alessandro , Aiolli Fabio , Moschitti Alessandro
Published: September 2019

Kernel methods are popular and effective techniques for learning on structured data, such as trees and graphs. One of their major drawbacks is the computational cost related to making a prediction on an example, which manifests in the classification phase for batch kernel methods, and especially in online learning algorithms. In this paper, we analyze how to speed up the prediction when the kernel function is an instance of the Mapping Kernels, a general framework for specifying kernels for structured data which extends the popular convolution kernel framework. We theoretically study the general model, derive various optimization strategies and show how to apply them to popular kernels for structured data. Additionally, we derive a reliable empirical evidence on semantic role labeling task, which is a natural language classification task, highly dependent on syntactic trees. The results show that our faster approach can clearly improve on standard kernel-based SVMs, which cannot run on very large datasets.
Balanced Linear Contextual Bandits
Authors: Dimakopoulou Maria , Zhou Zhengyuan , Athey Susan , Imbens Guido
Published: September 2019

Contextual bandit algorithms are sensitive to the estimation method of the outcome model as well as the exploration method used, particularly in the presence of rich heterogeneity or complex outcome models, which can lead to difficult estimation problems along the path of learning. We develop algorithms for contextual bandits with linear payoffs that integrate balancing methods from the causal inference literature in their estimation to make it less prone to problems of estimation bias. We provide the first regret bound analyses for linear contextual bandits with balancing and show that our algorithms match the state of the art theoretical guarantees. We demonstrate the strong practical advantage of balanced contextual bandits on a large number of supervised learning datasets and on a synthetic example that simulates model misspecification and prejudice in the initial training data.
Single-Label Multi-Class Image Classification by Deep Logistic Regression
Authors: Dong Qi , Zhu Xiatian , Gong Shaogang
Published: September 2019

The objective learning formulation is essential for the success of convolutional neural networks. In this work, we analyse thoroughly the standard learning objective functions for multiclass classification CNNs: softmax regression (SR) for singlelabel scenario and logistic regression (LR) for multi-label scenario. Our analyses lead to an inspiration of exploiting LR for single-label classification learning, and then the disclosing of the negative class distraction problem in LR. To address this problem, we develop two novel LR based objective functions that not only generalise the conventional LR but importantly turn out to be competitive alternatives to SR in single label classification. Extensive comparative evaluations demonstrate the model learning advantages of the proposed LR functions over the commonly adopted SR in single-label coarse-grained object categorisation and cross-class fine-grained person instance identification tasks. We also show the performance superiority of our method on clothing attribute classification in comparison to the vanilla LR function. The code had been made publicly available.
New species of the augochlorine bee genus Stilbochlora, with a preliminary key (Hymenoptera: Halictidae)
Authors: Engel Michael S.
Published: September 2019

Three new species of the augochlorine bee genus Stilbochlora Engel et al. (Halictinae: Augochlorini) are described and figured from Peru.  The new species are distinct from the type species, Stilbochlora eickworti (Engel et al.), in the more densely and extensively striate propodea, and can be distinguished from each other on the basis of propodeal sculpturing and coloration.  The new taxa are: S. graceae Engel, new species; S. kateae Engel, new species; and S. wedmanorum Engel, new species.  A key is provided to the species of Stilbochlora.
Economía del comportamiento y ayudas públicas del Estado: ¿Por qué los iraníes se negaron a renunciar al recibo del subsidio gubernamental? (Un juego múltiple del dilema del prisionero)
Authors: Javadi Yeganeh Mohammad Reza
Published: September 2019

Este artículo utiliza la teoría de juegos, más específicamente el juego múltiple del dilema del prisionero, para analizar por qué los iraníes se negaron a renunciar a recibir subsidios públicos en abril de 2014, a pesar de las frecuentes solicitudes del gobierno. La muestra de estudio consta de dos grupos principales: los que no dependían del subsidio del gobierno, pero que lo solicitaban; y los que tampoco dependían, pero habían fingido fraudulentamente depender del subsidio del gobierno. Se presentan algunas sugerencias, tales como definir el juego de la gallina y no el juego del dilema del prisionero como juego principal.
Generating chemically competent (E. coli) cells v3
Authors: Yin Phua Su , Chi Khin Nay , Tee Estee , R Ganguly Diep , Xun Chan Kai , Albrecht-Borth Veronica , J Pogson Barry
Published: September 2019

Protocol for generating chemically compotent (ie. for heat shock transformation) E. coli cells for transformation (e.g. heterologous protein expression, cloning).
Validity of daily self-pulse palpation over two weeks for screening for atrial fibrillation among patients 65 years of age and older seeking primary care v1
Authors: Ghazal Faris
Published: September 2019

Background Pulse palpation is recommended for single time-point screening for atrial fibrillation (AF). The role of pulse palpation for AF detection has not been validated against simultaneous intermittent ECG recordings. We aimed to study the validity of AF screening using self-pulse palpation simultaneously with handheld ECG recordings three times daily for two weeks for AF. Methods and Findings Patients 65 years of age and older visiting four primary care centres were invited to take part in AF screening from July 2017 to December 2018. Handheld intermittent ECGs three times per day were offered to patients without AF for a period of 2 weeks and patients were instructed on how to take their own pulse simultaneously. A total of 1010 patients (mean age 73 years, 61% female) participated in the study and 27 (2.7%) new cases of AF were detected. A total of 53782 simultaneous ECG recordings and pulse measurements were registered. AF was verified in 311 ECG recordings, of which the pulse was palpated as irregular in 77 patients (25% sensitivity per measurement occasion). Of the 27 AF cases, 15 cases felt an irregular pulse on at least at one occasion (56% sensitivity per individual). 187 individuals without AF felt an irregular pulse on least one occasion. The specificity per measurement occasion and per individual was 98% and 81%, respectively. Conclusion AF screening using self-pulse palpation three times daily for two weeks has lower sensitivity compared with simultaneous intermittent ECG.
E. coli protein expression and purification v1
Authors: R Ganguly Diep , Rhodes Timothy , Chi Khin Nay , E Tee Estee , Xun Chan Kai
Published: September 2019

Protocol for recombinant protein expression in E. coli for enzyme assays, protein crystallography etc.
Why talk about Hermeneutics?
Authors: Batista Josiel De Oliveira , Mocrosky Luciane Ferreira , Mondini Fabiane
Published: September 2019

Many are the works in Mathematical Education that have analyzes based in the hermeneutics, explicitly or not. However, the elaboration of texts that focus on discussing the philosophical foundations of hermeneutics, understood in different perspectives, is still a demand of this field of knowledge. In order to contribute to this discussion and bring clarification about what is hermeneutic, we wrote this work that approaches it in the perspective of phenomenology, that is, as a philosophy. Starting from different historical conceptions of the term, which has in its roots the synonym of interpreting and translating, we present our understanding of the constitution’s course of philosophical hermeneutics, as an ontology of understanding, that is, a way for the human being to comprehend himself and understand the world. In this sense, we envisage contributions of hermeneutics to the research that themes the Education, since, constantly and interpretative-understanding movement of texts, testimonies, expressions of students and pedagogical practice constantly made in the educational context.
Analysis of textbooks of Mathematics in relation to the Disposition of Tasks in the light of Attention as a Neurocognitive Mechanism
Authors: Pontes da Silva Luciano , Silva da Fonseca Laerte
Published: September 2019

The present work has the objective of analyzing the tasks on trigonometric functions presented in three books approved in the last three PNLDs, from 2009 to 2017 regarding Levels of Attention Transfer according to Sternberg (2010). The research has a documentary nature, within its intended purpose and is divided into two sessions. The first concerns the theoretical part, concatenating three pillars: the screening of tasks according to Dante (2005); the official documents, especially the Guide of the Didactic Book and the Attention, with neurocognitive lenses like Lent (2002), Lima (2005) and psychological with Sternberg (2010) and Willingham (2011) among others. The second part brings to the fore the empirical part of the work, with the analysis of the three books, namely: "Mathematics" by Dante (2005a), "Mathematics" by Ribeiro (2010) and "New Mathematical Souza (2013). The tasks were screened at three levels of attention, where it was noticed that most of the tasks found in the analyzed books are within the second level, none appearing at the third level of attention.
Math Skills Prioritised in the Evaluation of Early Childhood Education
Authors: De Anunciação Roveda Crislaine , Cavalli Bertolucci Cristina , Da Silva João Alberto
Published: September 2019

This study deals with the matter of evaluation in early childhood education concerning mathematical knowledge. It aims to identify which skills are prioritised in the evaluation of preschool classes from a public school. The methodological design is the Case Study, and it is based on the documentary analysis. Fifty-two descriptive evaluation documents elaborated by eight teachers were analysed, taking into account the objectives provided by the Brazilian National Curriculum for Early Childhood Education. The data indicate that most of the mathematical skills related to “Number and Numbering System”, “Greatness and Measures” and “Space and Shape” are evaluated and recorded in the documents. It is noteworthy the absence of references to the notions of successor and predecessor, comparison of numeric writings, the monetary system, and bi and three-dimensional representations of objects.
The Dimensions of Making Sense: The Understanding of Exponential Functions from an Investigative Activity
Authors: Cardozo Dionei , Possamai Janaína Poffo
Published: September 2019

This research is part of the ongoing Master's dissertation entitled "From the Carbon Atom to the Great Populations: Teaching Exponential Functions under the perspective of Problem Solving" of the Post-Graduation Program in Teaching Natural Sciences and Mathematics of the Regional University of Blumenau (FURB), which sought to verify the contributions of the Teaching-Learning-Assessment Methodology through Problem Solving and the use of GeoGebra software for learning exponential functions. In this specific work, we seek to relate Problem Solving as a theme of the actual current of teaching Mathematics called Making Sense and to verify its implications for the learning of exponential functions. For this purpose, an activity was developed and applied involving Newton's Cooling / Heating Law with the purpose of relating the tabular, algebraic and graphical representations of the exponential functions, validating the results from an experimental practice based on the dimensions of the Making Sense. This activity was applied in a 1st year high school class and it was verified that this problem allowed to contextualize the program content, as well as to promote the learning of new concepts from a practice in which the student becomes the main agent of his learning and the teacher acts as a mediator in this process, encouraging and instigating when necessary. In the end, it was noticed that the students have understood the involved concepts without needing the direct intervention of the teacher.
The Teacher's Mentoring Role and the Reflexive Teacher Formation during Supervised Internships in the Science Education Area
Authors: Altarugio Maisa Helena , Souza Neto Samuel De
Published: September 2019

In the initial teacher education scenario, the supervised internships are considered as privileged spaces for the teacher’s professional development, while a reflexive practice is one of the paradigms that guide this formation. Hence, a significant part of the formation of a future professional lies on the university professor who takes the responsibility for the orientation of these practices. In this context, this study has the objective to identify and analyze how professors at the beginning of their career paths, who have just taken the role of supervising the practices, conceive and deal with their mentoring role and with the function of orienting reflexive practices in the education of trainee teachers. Eight professors from different teacher training courses in the Science Education area at a public federal university in Brazil have participated in this case study, where semi-structured interviews and content analysis were used as the main techniques. The results have suggested that, for one group of these professors, the reflection would have a transformative and critical function over their practices and their professional contexts. On the other hand, for the other group, the teacher’s mentoring role seemed to present a more pragmatic preoccupation, as well as the function and the way to conduct this reflection. While they are moving towards accomplishing their role as teacher mentors, other factors also show some influence in building their identities. Regarding the field of teacher education and the professionalization of education, this study has pointed out to some paths towards which it is possible and necessary to advance and it may contribute to leave teaching from a critical and reflexive orientation as a heritage for the next generations.
Analysis of the Language of Scientific Divulgation Texts Related to Genetics Inserted in the Biology Textbook
Authors: Miceli Bruna Sarpa , Rocha Marcelo Borges
Published: September 2019

The Scientific Divulgation texts (SD), when inserted in Biology textbooks, are capable to help to bring students closer to scientific knowledge, especially in relation to Genetics, which is still seen as a difficult discipline to understand and which is linked to ethical, social, political and cultural issues. In this way, it was questioned the aspects of the language when the SD texts are inserted in the Biology textbooks. Thus, the goals of this research was to analyze the language presented by SD texts related to Genetics present in the Biology textbooks. In this sense, 17 texts were selected from a collection of textbook and were analyzed based on the presence of metaphors, analogies, explanatory terms and conceptual errors. The results indicated that the most of the texts presented linguistic resources and that they were used with the intention to facilitate the student's understanding of this theme. It was concluded that maintaining these resources, we could contribute to bring the reader closer to knowledge about Science.
Use of different external mediating mechanisms of the Bohr atom model: Evidence of Meaningful Learning through verbal-gestural analysis in elementary school students
Authors: Freitas Savana Dos Anjos , Serrano Agostinho
Published: September 2019

The present article sought to investigate if the use of different external mediation mechanisms to teach the Bohr Atom model in elementary education with the didactic methodology of the Potentially Significant Teaching Units (PSTU) can result in Meaningful learning.  Therefore, we naturally use the theoretical contribution of the Ausubelian Meaningful Learning Theory, in particular by discussing elements that indicate evidence of meaningful learning.  This theory was adopted with the purpose of understanding and analyzing whether or not there is evidence of meaningful learning with elementary level students after about a year of using the didactic methodology. The didactic methodology used was the application of didactic sequences inspired by the PSTU model, modified to be applied in Elementary School.  We also use different external mediation mechanisms that independently reproduce the Bohr atom model, such as model building (psychophysical mediation), teacher explanation on a blackboard (social mediation), use of textbooks (cultural mediation)  and computer simulations (hypercultural mediation).  Data analysis was carried out through two semi-structured interviews according to the Report Aloud protocol followed by the depictive gestural analysis, performed with an interval of almost one year, both interviews were carried out after the application of the didactic methodology, in order to assess the retention of the learning residue.  We argue that the students' verbal-gestural production indicates that there was meaningful learning of the Bohr Atom model, especially related to social and hypercultural mediations.
İdiyopatik Bilateral Aksesuar Sinir Felci
Authors: GÜLER Kadir , ÖĞÜT Halil
Published: September 2019

Spinal aksesuar sinir hasarı sıklıkla boyun
cerrahileri sonrasında görülmektedir. Cerrahi dışında traksiyon, gerilme, künt
travma, penetran yaralanmalar gibi çeşitli nedenlerle izole spinal aksesuar
sinir hasarı görülmektedir.  Spinal
aksesuar sinir felcinde trapez kas atrofisi, servikal dismetri, omuzda çökme,
supraspinatus çıkışında daralma sonucu subakromiyal sıkışma görülebilir. Bu
yazıda omuz ağrısı ve güçsüzlük ile başvuran hastada bilateral spinal aksesuar
sinir felci gelişimini sunmayı amaçladık.
A literatura infantil no Brasil e em Portugal
Authors: Santos Hansen Patricia
Published: September 2019

O objetivo deste trabalho é refletir sobre algumas das questões teórico e metodológicas que se impõem aos historiadores da literatura infantil a partir de experiências de pesquisa no Brasil e em Portugal. A literatura infantil pode ser abordada pelo historiador como fonte e/ou como objeto de pesquisa. Pode ser analisada em seus aspectos sociais, econômicos, políticos, culturais e considerada privilegiadamente em uma ou mais dimensões: textual, material, visual, conceitual, etc. Na impossibilidade de abordar e discutir o tema em toda a sua complexidade, farei considerações sobre três problemas especificamente historiográficos, tomando como referência os casos da literatura infantil em Portugal e no Brasil: a conceituação e circunscrição do objeto de pesquisa; os obstáculos à periodização; o acesso às fontes e constituição de um corpus.
Un oficio para ser feliz (e para axudar a cambiar o mundo)
Authors: Candedo Guntirriz María Dolores
Published: September 2019

“Un oficio para ser feliz (e para axudar a cambiar o mundo)”, conferencia pronunciada por Agustín Fernández Paz na antiga Escola de Maxisterio de Lugo –hoxe Facultade de Formación do Profesorado– o 4 de outubro de 2007.
Expediente gubernativo instruído a Hermenegildo Calvelo, mestre da escola completa de nenos de Cuntis (1894-1896)
Authors: De Gabriel Fernández Narciso
Published: September 2019

Reproducción dos seis documentos que compoñen o expediente gubernativo instruido a Hermenegildo Calvelo, mestre da escola completa de nenos de Cuntis (1894-1896).
História da Educação. Fundamentos teóricos e metodologias de pesquisa: Balanço da investigação portuguesa (2005-2014)
Authors: Fernandes Paz Ana Luísa
Published: September 2019

Resenha do livro: ALVES, Luís Alberto & PINTASSILGO, Joaquim (Coords)(2015), História da Educação. Fundamentos teóricos e metodologias de pesquisa: Balanço da investigação portuguesa (2005-2014).
A Escola como cultura. Experiencia, memoria, arqueología
Authors: Malheiro Gutiérrez Xosé
Published: September 2019

Recensión do libro: ESCOLANO BENITO, Agustín. (2016). La escuela como cultura. Experiencia,memoria, arqueología
Los Museos Pedagógicos en España. Entre la memoria y la creatividad
Authors: Bolaño Amigo María Eugenia
Published: September 2019

Reseña do libro: ÁLVAREZ DOMÍNGUEZ, P. (Coord.)(2016). Los Museos Pedagógicos en España. Entre la memoria y la creatividad.
Influencias Suizas en la educación Española e Iberoamericana
Authors: Terrón Bañuelos Aida
Published: September 2019

Reseña del libro: HERNANDEZ DÍAZ, José María (Coord)(2016), Influencias Suizas en la educación Española e Iberoamericana.
A comparative clinical study between intra-caesarean and interval intra uterine copper device insertion in caesarean deliveries
Authors: R. Geetha Lakshmi , S. Sornam M. , G. Thenmozhi
Published: September 2019

Background: Health and family welfare of Indian Ministry, emphasis on postpartum IUCD insertion. Here we conducted a clinical study comparing intra-caesarean and interval CuT-380A insertion in caesarean deliveries.Methods: A systematic study with 150 patients in each group, recruited clients alternately. Group A Intra-Caesarean Cu-T insertion and Group B Interval Cu-T insertion in caesarean deliveries. Groups were followed up at 6th week and 6th month post insertion with a set of parameters. Missed strings, expulsion and infection rates were the primary outcome measures.Results: Infection rate is higher in Group A (2.3%) at 6th week, and at 6th month infection rate is higher in Group B (1.8%). Missed strings are higher in intra-caesarean than in interval insertion method both at 6th week and 6th month follow up p=0.000, hence significant. Expulsion rate is higher in Group A (2.5%) at 6th week, and at 6th month expulsion rate is higher in Group B (1.9%). There are no complications such as uterine perforation or contraceptive failures in both the groups during the study period. By analysis, there are no significant differences in infection and expulsion rates between the groups. For missed strings there is significant difference between the groups with more missed strings in intra-caesarean insertion method.Conclusions: To conclude, intra-caesarean method is equally effective as interval IUCD insertion method without added complications in caesarean deliveries, with advantage of high motivation, good compliance, safety and ease for the provider to deliver services.
Chronic constrictive pericarditis: an “Egg-Shell” calcification
Authors: Patel Ramesh , Gohel Rohit
Published: September 2019

Chronic constrictive pericarditis is a condition marked by scarred and inelastic pericardium with excessive fibrous tissue and calcium. Here, we report a case of Egg-Shell like calcification in a 30-year-old young adult diagnosed with chronic constrictive pericarditis. The patient was successfully managed with very good prognosis post-pericardiectomy.
A clinical study of respiratory distress in neonates
Authors: Meena Ramkesh , Kobal Mallikarjun R. , Dhanwadkar Sharanabasappa S. , N. B. Ashwini Kumari
Published: September 2019

Background: Respiratory distress is a medical emergency responsible for most of the admissions in NICUs during neonatal period. It is a major contributor to neonatal morbidity and mortality and results from a variety of respiratory and non-respiratory etiology. It occurs in 0.96 to 12% of live births and responsible for about 20% of neonatal mortality. Aim of study to find out the proportion of patients with different etiology of respiratory distress in neonates.Methods: The present study is a prospective, descriptive study which was carried out at neonatal units attached to SMS Medical College, Jaipur. All the neonates with respiratory distress admitted in NICU admitted from April 2012 to March 2013were selected for the present study. Detailed history including antenatal history, natal history, postnatal history with thorough clinical examinations and investigations done in each case and were recorded in the performa.Results: A total of 500 neonates were admitted and among them 375 were inborn (delivered in our hospitals) and 125 out-born (referred to our hospitals from outside). In inborn group hyaline membrane disease (HMD) was the most common cause (32%) of respiratory distress and in out-born congenital pneumonia/septicaemia (34.4%). There was male preponderance in both inborn and out-born groups with male: female ratio 1.45:1 and 1.6:1 respectively.Conclusions: Majority of cases in both inborn and out-born groups were preterm (56.8% and 54.4% respectively) which emphasises the need for care of mother during antenatal period for prevention of premature delivery.
Prevalence of delirium in elderly intensive care unit patients of a tertiary care medical college hospital
Authors: S. R. Hemanth Kumar , Patel Apoorva E.
Published: September 2019

Background: Delirium is an acute disorder of attention and cognition. It occurs in 20% to 79% of hospitalized older patients. It is also common in ICU patients, occurring in 20% to 50% of non-mechanically ventilated ICU patients and in 60% to 80% of mechanically ventilated ICU patients. Hence delirium is a common, serious, and often fatal condition among older patients. The present study attempts to address the prevalence of Delirium in the Indian elderly population.Methods: A cross sectional study was conducted between January 2019 to June 2019 in a 50 bedded intensive care unit of a tertiary care hospital in Bengaluru, Karnataka. A total of 300 elderly patients aged 60 years and above, satisfying the inclusion criteria was included in the study. Patients were assessed for the presence of delirium within 24 hours of admission using Confusion Assessment Method for Intensive Care Unit (CAM-ICU). Various qualitative variables were expressed in terms of proportions.Results: Prevalence of delirium among elderly, non-ventilated ICU patients was 30% (90 out of 300 patients). Among them, 50 (55.5%) were females and remaining 40 (44.5%) were males. Mean age of the patients was 76 years. About 50 (55.5%) of them belonged to age group of 70-79 years. Most of the delirium patients (44.5%) belonged to hypoactive type of delirium followed by hyperactive (33.3%) and mixed (22.2%) type of delirium.Conclusions: Delirium in elderly ICU patients is significantly prevalent, which is a poor prognostic factor, leading to higher morbidity and mortality. Of the three subtypes- hypoactive delirium is the most common type of delirium among elderly. Yet, it is often overlooked or under-diagnosed. Hence clinicians and/or trained nursing staff managing the patients in the ICUs, should routinely screen the patients for delirium, using brief screening measures, which in turn can improve the patients’ outcome.
Citizen engagement in social health insurance purchasing, in selected counties in Kenya
Authors: Mwangi Eunice M. , Tenambergen Wanja M. , Mapesa Job O. , Mutai Isaac K.
Published: September 2019

Background: National hospital insurance fund (NHIF) uses capitation as a strategic purchasing model to provide primary care health services (PCHS). This study sought information on citizen knowledge of PCHS benefit package, NHIF communication to citizens, determination of citizen views and values, NHIF accountability to citizens, citizen choice of PCHS provider and how these factors influence citizen access to NHIF, PCHS.Methods: This was a cross sectional research conducted between March 2017 to March 2018. 426 patients were sampled from Nyandarua and Nakuru Counties.Results: 366 (93%) patients knew the PCHS benefit package, 226 (57%) said NHIF communication to them was adequate, 280 (71%) said NHIF does not take into account their view and values, 272 (69%) said NHIF is not accountable to them, 269 (68%) knew how to select an outpatient facility, 111 (28%) said they did not receive NHIF, PCHS. Multivariate logistics regression analysis of citizen engagement factors and access to PCHS, indicate that NHIF communication to citizens (p<0.05, OR=2.358, 95% CI [1.399-3.975]), purchaser accountability (p<0.05, OR=2.073, 95% CI [1.017-4.226]) and provider choice (p<0.05, OR=2.990, 95% CI [1.817-4.920]) added significantly to the regression model.Conclusions: There is inadequate engagement of citizens in NHIF decision making which may hinder access to NHIF PCHS, therefore NHIF should establish citizens’ needs and preference through public forums, elicit citizens’ feedback, act on complains when raised, inform citizens on how the capitation system works and NHIF should visit health facilities regularly to establish if patients are accessing PCHS.
Myringoplasty using temporalis fascia and its clinical outcome
Authors: Zaman Akbar , Omar Saif
Published: September 2019

Background: Chronic suppurative otitis media is one of the common otological conditions in India for which patients seek advice from an otorhinolaryngologist. Various surgical modalities of treatment have been tried since ages, to eliminate the disease from middle ear cleft, with varying degrees of success rate. One such modality of treatment is myringoplasty. The aim of the present study was to assess the success rate of myringoplasty using temporalis fascia and to evaluate preoperative and postoperative hearing loss in patients with chronic suppurative otitis media.

Methods: Sixty adult cases of tympanic membrane perforation were included in the study. Myringoplasty was performed in all cases and hearing loss was compared both before and after surgery.  

Results: Preoperatively 20 cases showed hearing loss at 16-25 dB, 26 cases at 26-40 dB, and 14 cases showed hearing loss at >40 dB. Graft uptake was successful in 50 patients (83.33%). Postoperatively definitive improvement of hearing was observed in 46 patients. The success rate of surgery in cases of dry ear with more than 6 months was 100%.

Conclusions: Outcome of myringoplasty does not depend on sex and site of perforation. Dry ear of duration greater than 6 months is a favourable prerequisite. Graft take up was impaired in cases of sclerotic mastoid and postoperative infection.
A clinical study of surgical management of paediatric humeral supracondylar fracture
Authors: Kumar Ajay , Padmanabhan Karthik
Published: September 2019

Background: Injury to the supracondylar region of the humerus and complete displacement of the fragments occurs in many of the cases when children usually fall while playing. This is most common fracture seen in children, makes up to 60% of all elbow injuries. Early intervention results in excellent reduction and avoids complications. Concomitant vascular and nerve damages may occur. Open reduction and internal fixation is a helpful option for the treatment of supracondylar facture of humerus in children.

Methods: Forty children who presented with displaced supracondylar fracture of the humerus were treated with open reduction and internal fixation with Kirschner (K) wires after thorough pre-operative investigation during the course of the study. Children below the age of 13 were selected irrespective of the sex.

Results: Good results were obtained in 60% of the patients, fair in 30% and poor in 10%. The poor results were due to the open fracture and in two cases the patient presented very late to the hospital. Complications such as nerve injuries, vascular injuries, infections were noticed in the study. Four patients had cubitus varus and twelve patients had flexion loss on follow-up study.

Conclusions: Open reduction and internal fixation with K wire is an easy, simple, inexpensive method, which has good outcome.
Percutaneous Coronary Intervention for Coronary Arteries with Origin and Course Anomalies: Case Reports and Literature Review
Authors: Akcay Murat , Camlıdag Ilkay , Gulel Okan
Published: September 2019

Coronary artery anomalies (CAAs) are defined as variants of normal epicardial coronary arteries. They are mostly detected incidentally during coronary angiography. Clinical studies have shown that abnormal origins and courses of coronary arteries make them more prone to atherosclerosis. Percutaneous treatment for atherosclerotic occlusions in anomalous coronary arteries has some difficulties, including inadequate guiding-catheter support and the need for an experienced operator. Here, we describe successful percutaneous coronary interventions for critical stenoses in 2 different CAAs and present a brief literature review.
Patent Foramen Ovale: A Fatal Trap
Authors: Davarpasand Tahereh , Mohseni Badalabadi Reza , Mansourian Soheil , Rahnamoun Zahra
Published: September 2019

A 39-year-old man referred to us with a complaint of dyspnea and palpitation of 3 days’ duration.  The patient was tachycardic but normotensive with a normal blood oxygen saturation level of about 91%. His electrocardiogram showed a sinus rhythm with an incomplete right bundle branch block. There was no known risk factor for vein thrombosis in his past medical history. Transthoracic and then transesophageal echocardiography revealed a large, hypermobile elongated mass (about 10×1 cm) in the right atrium. The mass was in transit through a large patent foramen ovale (Figure 1, Video 1). There was also severe right ventricular dilation with moderate systolic dysfunction on echocardiography, suggestive of pulmonary thromboembolism (PTE). Consequently, multiple-detector computed tomography angiography was performed to determine mortality risk and help the decision-making regarding the duration of anticoagulation therapy. The angiographic procedure revealed massive bilateral PTE (Figure 2).
The patient was referred for atriotomy and pulmonary embolectomy on cardiopulmonary bypass (Figure 3).
A thrombus in transit is a life-threatening, albeit rare, type of right-heart thrombosis with mortality rates of 80-100% in untreated patients,1 necessitating urgent assessment and treatment. A thrombus in transit can result in catastrophic systemic embolism in a patient with PTE; therefore, taking heed of this issue in the presence of a right atrial mass is of great therapeutic significance. Meticulous imaging modalities in such patients are mandatory to prove the existence of a patent foramen ovale with a view to deciding on an emergent individualized therapeutic management of the patient’s condition.
PROJETO DE UM SISTEMA DE SUSPENSÃO PARA UM VEÍCULO TIPO FÓRMULA SAE ELÉTRICO
Authors: Cabral Naelton Elias de Souza , Sá Mateus Brener Reis de , Juliane Lucas Vinicius de Bem , Benini Lucas
Published: September 2019

A competição Fórmula SAE Student é organizada pela SAE (Society of Automotive Engineers) desde 1978 com o objetivo de enriquecer a formação dos estudantes de engenharia, fazendo-os trabalhar na prática conceitos aprendidos em sala. O objetivo do presente trabalho é detalhar o projeto do sistema de suspensão do protótipo GX01E da Equipe Fórmula UFVolts Majorados através da metodologia de projeto proposta por Project Management Institute (2009). Com os resultados atingidos foi possível estruturar o projeto de suspensão, traçando o caminho crítico da atividade do mesmo e criando-se um cronograma de tarefas. O trabalho foi de suma importância para a equipe, uma vez que possibilitou a criação de um manual para o procedimento de projeto do sistema de suspensão e implicará na economia de tempo nos projetos dos próximos protótipos.
APLICAÇÃO DE FERRAMENTAS DE GERENCIAMENTO NOS LABORATÓRIOS DA ÁREA DE FABRICAÇÃO DA UFV
Authors: Benini Lucas , Carvalho Luísa Martins de
Published: September 2019

Este trabalho aborda o gerenciamento dos Laboratórios de Manufatura Assistida por Computador, de Manufatura e de Usinagem do Departamento de Engenharia de Produção e Mecânica (DEP) da Universidade Federal de Viçosa (UFV). O objetivo deste trabalho é elaborar um plano de gerenciamento para três laboratórios da área de fabricação do DEP que contempla procedimentos operacionais padrões, procedimentos analíticos e estudo de arranjo físico. A originalidade deste trabalho está relacionada à utilização e adaptação de metodologias e ferramentas gerenciais para que os laboratórios possam realizar suas atividades de maneira padronizada, minimizando a perda de conhecimento no tempo e baseada em conceitos prestigiados na gestão moderna de organizações. Por meio de entrevistas estruturadas foi obtido o insumo para a identificação, mapeamento e procedimento dos processos usinagem por fresamento e por torneamento. Os resultados alcançados permitem um gerenciamento dos materiais permanentes e consumíveis destes laboratórios mais eficiente
APLICAÇÃO DA FILOSOFIA LEAN SERVICE PARA A OTIMIZAÇÃO DO PROCESSO DE SERVIÇO DE UMA EMPRESA JÚNIOR DE CONSULTORIA
Authors: Benini Lucas , Batista Fabiana Raimunda Rocha
Published: September 2019

O setor de serviços tem se tornado cada vez mais um campo estratégico para a economia brasileira. Deste modo, as empresas têm buscado, progressivamente, formas de melhorar e otimizar seus processos, tornando-as mais competitivas. Neste contexto, este trabalho tem como objetivo a aplicação do lean service em uma Empresa Júnior de Consultoria, visando a otimização de seu processo de serviços por meio da redução de desperdícios e agregação de valor ao seu serviço. Realizou-se o diagnóstico inicial da empresa, prosseguindo-se com o estudo de seu processo de prestação de serviços de consultoria e construção dos mapas de fluxo de valor (atual e futuro), bem como a identificação de desperdícios. Por meio das análises realizadas foi possível identificar os pontos críticos do processo e propor melhorias para um tipo de serviço que exige alta participação dos clientes, tornando as análises mais complexas.
O PLANEJAMENTO EXPERIMENTAL DOEHLERT NA CARACTERIZAÇÃO DA RUGOSIDADE COMO FUNÇÃO DOS PARÂMETROS DE ENTRADA DO PROCESSO DE FRESAMENTO DO AÇO ABNT 1020
Authors: Benini Lucas , Rossi Mauro Alberto Castheloge
Published: September 2019

Este trabalho visa a obtenção de um modelo matemático capaz de descrever o comportamento da rugosidade do aço ABNT 1020 em função aos parâmetros de entrada do processo de fresamento convencional. Para isso, foi empregado a metodologia de planejamento experimental denominada planejamento Doehlert. Foram definidas 5 velocidades de corte e 3 velocidades de avanço, que foram correlacionadas, formando 7 pares de parâmetros de entrada. Assim, foram obtidos 3 modelos de caracterização para os parâmetros Ra, Rz e Rt que possuem uma assertividade de 67,3%, 70,9% e 78,3% respectivamente. Entretanto, pôde-se concluir que, apesar possuírem um R² maior de 60%, este resultado pode ser considerado não aceitável em termos do objetivo deste trabalho, uma vez que o padrão definido foi em torno de 95%, o que o torna inviável para o caso do fresamento.
O LEAN THINKING EM UM PROCESSO PRODUTIVO: UM ESTUDO DE CASO EM UMA PRESTADORA DE SERVIÇOS DE LAVAGEM DE ROUPAS
Authors: Canal André Dorigueto , Benini Lucas , Camargos Pedro Costa , Marques Vinícius Pereira
Published: September 2019

A manufatura enxuta visa principalmente a eliminação de desperdícios por todo o processo e a exclusão do que não tem valor para o cliente. Neste sentido, o lean thinking pode ser aplicado aos mais diferentes tipos de processos produtivos. Este trabalho tem como objetivo principal a identificação dos desperdícios no processo de lavagem de roupa oferecido em uma lavanderia de médio porte. Foram aplicadas algumas ferramentas do lean thinking e elaborados os mapas do estado atual e do estado futuro do processo de lavagem. Observou-se que a etapa que é terceirizada pela empresa é a que mais exerce influência no lead time do processo.
ANÁLISE DO FLUXO DE VALOR DA PRODUÇÃO DE IOGURTE EM UMA EMPRESA DE LATICÍNIOS NA ZONA DA MATA/MG
Authors: Benini Lucas , Bonoto Arthur Feital
Published: September 2019

O lean manufacturing visa a minimização dos desperdícios na manufatura de determinado produto. Este trabalho tem como objetivo identificar os desperdícios abordados pelo lean manufacturing que ocorrem na linha de produção do iogurte em uma empresa de laticínios na Zona da Mata/MG. Para tanto, foi realizada a análise do fluxo de valor, elaborando-se o mapa do fluxo de valor e identificando-se os desperdícios. Posteriormente foi construído o mapa de estado do estado futuro. Foram identificados 5 tipos de desperdícios e apresentadas propostas de melhorias para reduzi-los. Com a implementação destas melhorias, pode-se reduzir em torno de 60% do tempo de atividades que não agregam valor e 55% do lead time de produção do iogurte.
INTERFERÊNCIA DOS PROCESSOS DE MANUTENÇÃO DA FACE DE UM CABEÇOTE DE MOTOR AUTOMOTIVO EM SUA QUALIDADE SUPERFICIAL
Authors: Benini Lucas , Rossi Guilherme Cola Ramos , Silva Charles Luiz da
Published: September 2019

Cabeçotes de motores de combustão interna são um dos componentes sob maiores condições de desgaste do sistema de geração de força dos veículos automotores. Com isso, torna-se pertinente o estudo das técnicas utilizadas para a recuperação das dimensões adequadas para o seu perfeito funcionamento. Este trabalho visa analisar a qualidade da superfície gerada na face inferior de um cabeçote de liga de alumínio, após os processos de preenchimento por operações de soldagem em regiões que sofreram desgaste e subsequente processo de usinagem de aplainamento. Foram realizadas medições de rugosidade, de dureza e de metalografia nas regiões não preenchidas e preenchidas pelo processo de soldagem TIG e posteriormente aplainadas. Verificou-se que a presença de metal de adição não afeta o acabamento da superfície usinada e que as regiões que receberam preenchimento apresentaram maior ductilidade e defeitos de porosidade. Com isso, o componente pode se tornar mais suscetível a desgastes nas regiões com preenchimento
ETAPAS DE DIMENSIONAMENTO DE TREM DE POUSOTRICICLO PARA AERONAVES RADIO CONTROLADAS SAE AERODESIGN
Authors: Moraes Filipe Abdala Bento e Dantas de , Silva Charles Luís da
Published: September 2019

A competição SAE Brasil AeroDesign, é um evento que ocorre desde 1999 na cidade de São José dos Campos, visando através de uma competição avaliar projetos e construção de aeronaves por alunos de Engenharia de universidades Brasileiras e do Exterior. As aeronaves devem apresentar elevada eficiência estrutural e carregar a máxima carga possível, obedecendo às restrições de projeto da competição. Um dos componentes estruturais das aeronaves é o Trem de Pouso, devendo apresentar propriedades como rigidez e robustez, mas também boa relação entre peso e resistência. A equipe “Skywards UFVoa” da Universidade Federal de Viçosa visa aprofundar seus esforços no dimensionamento em materiais compósitos deste e de outros componentes, bem como métodos de fabricação mais eficazes. Este trabalho demonstra o dimensionamento de um Trem de Pouso que atenda as demandas do projeto da competição de 2018.