bluuebunny/crossref_metadata_2025 huggingface dataset:
Video Content on the Internet: Features of Audience Consumption
Authors: Shchepilova Galina , Kruglova Liudmila
Published: March 2020

The article presents the results of a study of the modern consumption of video content in the digital media environment by the Russian audience. The study was conducted in May-September 2018 and set itself the task of identifying the main preferences of the audience to the subject of video content, duration of viewing, attitudes to advertising, opportunities and willingness to pay for the watched video. The three-stage level of research using various methods made it possible to analyze the psychological and motivational features of video consumption by different age groups living in different populated areas; identify the degree of influence of technological factors. The level of video consumption in the Russian sector of the Internet is developing dynamically. This is especially true of the young audience, which is active in non-linear video viewing even without taking into account the geography of residence and the size of the settlement. This group uses the capabilities of the mobile Internet, which allow one to access the network anytime and anywhere. Consumption of video on the Internet by a more adult audience differs both within different age groups and in different Russian territories. There remains an open question about the possibilities of modifying and specifying the models for monetizing web-based content, taking into account the audience’s reaction to advertising and not explicitly indicated by the desire of the audience to pay for the content viewed. The solution to this problem seems to be particularly relevant due to the fact that the increase in the volume of the audience that turns to the Internet for video will undoubtedly increase. This is due to systemic trends in changing media consumption and is confirmed by an analysis of the dynamics of auditory behaviour in recent years.
Modeling as a Method of Cognition in the Context of the Study of Leaders Representations
Authors: Lazutina Galina , Lin Chuanzhao , Smirnova Olga
Published: March 2020

The article raises the problem of creating a theoretical basis for media representation of political leaders’ activities. To substantiate the re­le­vance of the topic, the authors rely, on the one hand, on the importance of such media representation, and on the other hand, on the importance of modeling, a method that has proved to be the best way of cognition and construction of reality in modern science. Modeling makes it possible to make a sign model of the objects of reality. It helps to understand them and to find opportunities for their improvement. This process is extremely important for the development of political communication representation in the media.
The authors characterize the essence of modeling as of a scientific method, its principles and algorithms; they highlight its main stages and procedures. They focus on the possibilities the modeling gives when studying political leadership and its media representation. The article gives a general description of this phenomenon, examines its theory, and draws attention to the importance of the synthetic leadership theory and the factors that determine the style of a political leader. The functions of a political leader and the structure of the activities necessary for the implementation of these functions are presented in detail.
Political leader’s activity model is developed on these grounds. It includes the main components of the leader’s function, the types of the activities necessary to implement these functions, and the forms of work traditionally used in the practice of political leadership. The model is useful when studying media representation of some specific politicians. The authors suggest methods, as a research tool, that allow getting information about the content, structure and genre of the media presentations.
The conclusions emphasize the importance of a journalist’s responsibility in working on a political media presentation, and consider the prospects the modeling has for improvement of media representation practice both in Russia and worldwide.
Robots Versus Journalists: Does Journalism Have a Future?
Authors: Salnikovа Ludmila
Published: March 2020

The article deals with the prospects of robotization of a big part of journalists’ work that may lead to redundancies in the media industry, transformation of traditional professional skills and emergence of new standards and competencies. The topicality of the article is proved by the need to explore the new boundaries of journalism as profession.
The author analyzes both types of work that can be automated, and those journalist activities where artificial intelligence cannot replace a human. The subject of the study is the data of the most recent researches, sociological surveys and statistics on transformation of the current media market and the new requirements for media-workers’ competencies in the context of the digital revolution. Basing on extensive factual material and experts’ forecasts, the author infers that it is high time for media professionals to extend the range of competencies and determine a related professional niche to secure them a job in case of redundancies caused by robotization.
The original results of a sociological survey carried out at the Department of International Journalism of MGIMO University build up the scientific novelty of the article. The aim of the survey was to find out and analyze the undergraduate students’ vision of their work prospects as journalists, to correlate their career plans and employers’ demand, and to identify their readiness to adapt to the new media practices.
The results of the survey bring the author to the conclusion that it is necessary to radically update the current syllabi to focus on the most recent information and communication technologies.
Trupization of American Television Journalism
Authors: Chobanyan Karine
Published: March 2020

Since of Donald Trump was elected President of the US, American journalism in general and TV journalists in particular has been going through transformations in genres, topics, variety of linguistic means and general content strategy. The article is an attempt to determine the most significant changes in the news broadcast.
Using the information content of CNN as the main detractor of Trump’s media policy, the author analyzes and describes the new trends in the broadcasting policy. These include a significant reduction in the number of news items per news bulletin, attractivation of panel discussions, dominance of political topics and Donald Trump himself as the main news maker, negative evaluation in the frontmen’s language, journalists’ switch-over from observing to criticizing and assessing, changes in the president’s image and in the concept of D. Trump in American mass media, and the emergence and development of a new “White House chaos” concept. The article shows the dynamics in the main CNN’s structural indicators, such as genres ratio, thematic preferences, linguistic components, over the past five years.
The author infers that the adversarial relationship between the president and TV journalists results in overall decreased taping content quality and lower professional standards for frontment and news channel correspondents. In this relation, lack of objectivity, biased discussions and prevalence of negative evaluation are of particular concern.
The research was carried out in the second half of 2018, a case study of CNN newscasts of 2017 and 2018.
Ferrous Ion-chelating Activity v1
Authors: Xu Jing
Published: March 2020

The effects of ferrous ion-chelating activity were conducted according to Guo et al.An aliquot of 1 ml extract was added to a solution of 100 µL of FeCl3 (2.0 mM), 3.7 ml of distilled water and 200 µL of ferrozine (5.0 mM). After 20 min, the absorbance was recorded at 562 nm. The inhibition percent and IC50values were calculated.
snATAC-Seq on 10x ChromiumTM platform for fresh, frozen and cryopreserved material: my notes from the lab (UPDATED VERSION) v1
Authors: G Martelotto Luciano
Published: March 2020

-Here, I will only include tips and notes related to snATAC workflow. Thus, I assume you are familiar with Frankenstein protocol below: - These are ONLY a collection of my lab notes. This is not a protocol. -These notes are derived from trial and error in order to get successful runs applied to fresh, snap/flash and cryopreserved frozen cell lines as well as to tissue derived from solid tumours and other tissues using Chromium Platform (10x Genomics). -Be mindful these are just my notes and by no means are ground truth of how snATAC-Seq needs to be performed. I WELCOME to comments, suggestions and amendments.
Superoxide Radical-scavenging Activity v1
Authors: Xu Jing
Published: March 2020

The superoxide radical scavenging effects were examined [11]. Briefly, extract (1 ml) was added to 1 ml of 50 μM NBT solution and 1 ml of 468 μMNADH, and a 1ml aliquot of 60 μM PMS reaction mixture. After 5min, absorbance was read at 560 nm. The inhibition percent and IC50 valueswere calculated.
Public Design of Urban Sprawl: Governments and the Extension of the Urban Fabric in Flanders and the Netherlands
Authors: Buitelaar Edwin , Leinfelder Hans
Published: March 2020

Urban sprawl is often portrayed as a (quasi-)natural process, as inevitable and taking place behind our backs. However, we claim that it is co-produced by government: Governments not only allow sprawl to happen, but often also incentivise and stimulate it, either knowingly or unintentionally. We substantiate this claim by comparing urban development and government institutions in Flanders (Belgium) to the Netherlands, two neighbouring territories, yet very different regarding this matter. Urban development in the Netherlands is considered orderly and compact, whereas in Flanders it is considered haphazard and sprawled. Urban planning, too, could not be more different. Strong national planning and an active local land policy characterise Dutch planning, while the opposite applies to Flanders. Although these images seem largely accurate, we argue that it is very particular government institutions in both countries that (help) create and reproduce the various degrees of urban sprawl.
A Pattern Language Approach to Learning in Planning
Authors: Rooij Remon , Van Dorst Machiel
Published: March 2020

The aim of this commentary is to present the position that a pattern language approach facilitates, even catalyzes (comparative) learning in planning for young professionals. This position builds on literature and is supported by the research work of six MSc Urbanism graduation projects, in which the students adopted a pattern language approach. Additionally, these alumni have been asked in retrospect to evaluate their pattern language experiences for their learning. The students say their pattern languages give focus, enrich the knowledge field, are flexible, and they do not prescribe what to do, or how to make a plan. Students see and appreciate the value of the simple, yet thoughtful structure of a pattern with both visual and verbal information. Additionally, they observe that this method enables the connection between disciplines, between theory and practice, and between stakeholders, and that, potentially, it is a helpful tool for all kinds of stakeholders. They refer to the method as a tool for communication, a tool for design and analysis, and a tool for learning.
Theoretical foundations of scientific support of judicial activity
Authors: Kholodenko N.
Published: March 2020

An independent, legitimate, effective judicial power in the state is a prerequisite for sustainable development of society, as a guarantee of proper implementation of justice as an important component of establishing and developing a democratic regime. As the international institutions rightly stress, "justice is aimed at resolving disputes between the parties and, through decision-making, to play a" normative "and" enlightening "role, giving citizens appropriate guidance, information and guarantees regarding the law and its practical application. Therefore, in the context of ongoing judicial reform, which destabilizes the activities of the judiciary in general and law enforcement practice in particular, important are the fundamental things that enable the Institute of Judicial Protection to perform the functions assigned to it. Among them prominent place is given to scientific providing of judicial activity. After all, science is able predict directions of development of social relations and judicial practice, to resolve issues of legal conflicts and existing in legislation of gaps. Therefore, science should be an integral the "companion" of the activity of the court, prominent place in which allotted enforcement.

The purpose of the article is to analyse the content of the category "scientific support of judicial activity" and wording the relevant concept.

As a result of the analysis, the following conclusions are obtained: Scientific support of judicial activity is based on the intellectual creative activity of certain subjects, which possess special knowledge and skills aimed at creation of knowledge and/or finding ways of their application for the needs and for the benefit of judicial activity. Unlike other areas of organizational support, scientific support of courts always involves the use of methodological tools in conjunction with theoretical developments and empirical data. It allows to use innovative approaches in the process of administration of justice and direct the development of judicial system in the direction of a public request. Thanks to him, there is a change of worldview judges and law enforcement practice. In addition, scientific support of judicial activity is a manifestation of interrelations of the judicial system with the "outside world", thereby developing its transparency. Thus, the notion of scientific support of judicial activity arises as a system of subjects, types of their intellectual activities and means, based on the methodology of scientific knowledge and scientific principles, functioning of which is aimed at satisfying the needs arising in the activities of the courts.
Practical use artificial intelligence in criminal proceeding
Authors: Plakhotnik O.
Published: March 2020

Artificial intelligence a set of scientific methods, theories and techniques whose aim is to reproduce, by a machine, the cognitive abilities of human beings. The artificial intelligence system is capable of using big data, calculating, evaluating, studying, deductive reasoning, abstract analysis and forecasting. The speed of information processing by artificial intelligence and its efficiency in making procedural decisions creates a model for digital automation of procedural decisions. The purpose of the article is to investigate the use of artificial intelligence in the judicial systems of developed countries and to analyze the prospects for its use in criminal proceedings in Ukraine. Such automation simplifies the process of making similar decisions in similar proceedings, which, of course, increases efficiency and simplifies procedural decision-making process in terms of procedural cost savings. Modern developments seek to ensure that machines perform complex tasks that were previously performed by humans. In the near future, accompanying organizational measures for the implementation of artificial intelligence and its regulatory support in public authorities associated with the storage of big data, processing information based on mathematical algorithms and making decisions based on artificial intelligence will be an integral part of our society. Artificial intelligence technologies are already being implemented in the judicial systems of China, the United States of America, the United Kingdom, France and Argentina. In the near future, the chances of using such technologies in the courts of general jurisdiction of Ukraine and in the criminal proceedings of Ukraine can be assessed as extremely high, and its scope is not limited to the work of artificial intelligence in court. You can also talk about the work of artificial intelligence in the activities of the prosecutor and the police. The paper deals with the use of artificial intelligence in the judicial systems of developed countries and analyzes the prospects of its use in criminal proceedings in Ukraine. These systems are reviewed, as: COMPAS (Correctional Offender Management Profiling for Alternative Sanctions) - United States of America, HART (Harm Assessment Risk Tool) - United Kingdom, Prometea - Argentina, Compulsory Similar Cases Search and Reporting Mechanism - China. The advantages of artificial intelligence systems are analyzed and a critique of their use is noted.
The issue of determination of bail’s size under Ukrainian legislation and legislation of Anglo-American countries: comparatively – judicial analysis
Authors: Stefanchuk M. , Iveruk N.
Published: March 2020

The legal regulation of bail's institute as a preventive measure in Ukraine and Anglo - American countries, including the aim of its application, bail's size and criteria for its determination, is the subject matter of this article. The authors support a point concerning to the inadvisability of legislative regulation of maximum bail's size as well as a judge's opportunity in certain circumstances to apply bail, size of which is lower than minimum level.

The purpose of article is to clarify strengths and weakness of legislative regulation of the bail in Ukraine, England and United States of America, to highlight a separate problems, arising in practice, to express recommendations and proposals regarding to the improvement of valid criminal procedural legislation of Ukraine.

Analyzing provisions of criminal – procedural legislation of England and United States of America, the authors provide a few bail's classifications, depending on way of making a deposit.

Besides it, the authors detect the drawbacks of legislative technique of Anglo – American countries regarding to not taking by judges into account material and family state of accused and suspected person, that leads to taking into custody a significant number of people, who are not financially secured to make a deposit.

The decisions of the European Court on Human Rights as an international judicial institution regarding to determination of the bail's size, which will guarantee an enforcement of duties that a suspected person is obliged to do and will be defined taking into account a material state of a suspected person, are highlighted in this article.

The authors also explore an issue of determination of bail's object and emphasizes on the necessity of clarifying of the money origin with the aim to avoid money laundering, which is offence, predicted by art.209 of Criminal Code of Ukraine.

Investigating theoretical and practical aspects of the determination of bail's size, the authors make a conclusion regarding to the existence of certain difference in national legislation and legislation of Anglo – American countries, that is a result of belonging Ukraine to continental, and the USA and England – to Anglo – American countries. The authors state that prospective of further explorations of high stated issue are an improvement of legislation, implementation of world's experience, taking into account the legal positions of the European Court on Human Rights, etc.
Significance of violations of the procedural criminal form, as a condition for the admission of evidence to be inadmissible
Authors: Vapnyarchuk V.
Published: March 2020

The development of the science of the domestic criminal process necessitates the study and revision of traditional scientific views on particular problems of criminal procedural evidence. One of the most important in the theory of evidence is the problem of the admissibility of evidence, and in particular the question of the legal consequences of a breach of the procedural form of the taking of evidence (forming the evidentiary basis of the legal position of the subject of evidence) in criminal proceedings. In scientific publications, these issues are given considerable attention. However, there is no clear-cut approach to solving it. Therefore, expressing your own position on their decision is quite important and necessary. It is these circumstances that explain the need for this article, its logic and content.

The purpose of the article is to investigate the legal consequences of violating the procedural form of taking evidence (forming the evidentiary basis of the legal position of the subject of proof) in criminal proceedings.

The results of the scientific elaboration of the author of the aforementioned problem were the conclusions on different approaches to the question of the legal consequences of violation of the procedural form of obtaining evidence. In particular, the opinion, supported and additionally substantiated in the scientific literature, that they depend on the materiality of the violation. Substantial violations entail the admission of the evidence obtained inadmissible, although they can be overcome by the means specified by law. Non-essential violations after their neutralization do not affect the admissibility of the evidence.

It is proposed to regulate the criminal procedural legislation of the Institute of Extreme need in criminal proceedings and scientific development of the procedure for its application.

It`s indicated that when decidind on the abmissibility of evidence obtained by using coercion (which can be qualified as a non-substantial violation of the rights and freedoms of the person to which it is used), it`s necessary to establish: firstly: firstly, their character (surmountable or irresistible) (in this connection it is necessary to determine the degree of its impact on the person, its individual physical abilities, the mental state in which it was found, etc.); secondly, the possibility of using the Institute of Extreme Necessity (subject to its regulation in the criminal procedural legislation).
Two-stage or single-stage vitreoretinal surgery with phacoemulsification in patients with advanced proliferative diabetic retinopathy?
Authors: Konovalova Karina I. , Shishkin Mikhail M.
Published: March 2020

The literature review compares the combined (vitreoretinal surgery with silicone tamponade and phacoemulsification of incipient cataract with intraocular lens implantation) and two-stage (phacoemulsification with intraocular lens implantation as a second step, simultaneously with the silicon oil removal, after vitreoretinal surgery) surgical treatment of patients with advanced proliferative diabetic retinopathy and complicated incipient cataract. Modern concepts of treatment tactics of this disease, its efficacy are analyzed. Benefits and drawbacks of each of the discussed surgical treatment methods are specified.
Long-term results of corneal collagen crosslinking with ectatic forms of corneal dystrophy
Authors: Frolov Oleg A. , Astakhov Sergey Yu. , Novikov Sergey A.
Published: March 2020

Corneal collagen crosslinking is one of the most effective methods of prophylactics and treatment of progressive corneal ectasias. In the literature, there are occasional data related to remote results concerning only the most common form of ectasias keratoconus. In published studies, no remote results are met concerning the efficacy of corneal collagen crosslinking in other forms of corneal ectasias, which are now on the rise, including secondary ectasias that became more frequent with refractive surgery. The number of diagnosed cases of pellucid marginal degeneration increased as well. The literature shows no data on comparative analysis of remote results concerning the efficacy of this method in treatment of various forms of corneal ectasias.

The aim of the investigation was to evaluate the efficacy of corneal collagen crosslinking based on the analysis of long-term results of this treatment method for various forms of corneal ectasias.

Materials and methods. The results of corneal collagen crosslinking in patients with various forms of corneal ectasia 6 years after surgery were analyzed. The nosological structure of the study included patients with keratoconus, pellucid marginal degeneration, and secondary ectasia. The group of patients with keratoconus included 30 patients (30 eyes), that with pellucid marginal degeneration 30 patients (30 eyes), and that with secondary ectasia 30 patients (30 eyes). Corneal collagen crosslinking was performed by the same specialist, during the first or the second year of follow-up. Then changes in the state of the cornea and visual functions were monitored for 6 years. To assess the efficacy, preoperative examination results and interim data were used.

Results. In all groups, there was an increase in the best corrected visual acuity, a decrease in the index of asymmetry of the corneal surface and its refractive power in the center of ectasia. However, best corneal collagen crosslinking results were obtained in groups of patients with keratoconus and secondary corneal ectasia.
Vitelliform changes in the central retina occurring in adults
Authors: Matcko Nataliia V. , Gatsu Marina V. , Grigoryeva Nyurguyana N.
Published: March 2020

Introduction. Vitelliform lesions of the central retinal area in adult patients represent a heterogeneous group of diseases. This article describes different variants of vitelliform changes in adults, based on the published literature data.
Materials and methods. We have analyzed and described different variants of vitelliform changes in adults, based on literature data, examples from own clinical practice using multimodal approach are included.
Discussion. Vitelliform lesions of the central retinal area are can debut at various ages, occurring in mono- or multifocal way, have various stages of degradation of vitelliform material, masquerading as other lesions of the macular area and of the posterior pole. Many of these diseases appear due to mutations in determined genes, though, a fairly large proportion of cases is considered to be sporadic. Nowadays, characteristic signs of different diseases with the vitelliform material are described. But differential diagnosis with other similar diseases (some age-related macular degeneration forms and those of central serous chorioretinopathy) is fairly difficult and requires a multimodal ophthalmologic approach, and in some cases genetic studies.
Conclusions. Vitelliform lesions of the central retinal area, occurring in adult patients are a group of diseases that are difficult to diagnose and masquerade themselves as other diseases of the central retina, which requires certain doctors knowledge and ability to carry out a multimodal imaging and prescribe the appropriate treatment if needed.
Collaborative Work in Mathematics Teacher Education
Authors: Gumiero Bárbara Silva , Pazuch Vinícius
Published: March 2020

Collaborative work improves teacher education through the interaction between people, narrowing the distance between university and schools and between researchers and preservice or in-service teachers. This systematic literature review included works published in databases like Scielo, ERIC, PsycINFO, Web of Science, and MathEduc. In total, 12 papers were reviewed to identify which factors present in collaborative environments favor the formation of teaching processes in Mathematics Education. The results show that class planning, teaching practices, and knowledge production provide a contribution to mathematics teacher education.
 
Keywords: Teacher Collaboration. Teacher Education. Mathematics Education. Systematic Review.
 
Resumo
O trabalho colaborativo potencializa a formação de professores por meio da interação entre pessoas, aproximando a universidade da escola e os pesquisadores dos professores em formação ou já atuantes. Esta revisão sistemática da literatura incluiu trabalhos publicados em bases de dados como Scielo, ERIC, PsycINFO, Web of Science e MathEduc. No total, 12 artigos foram revisados para identificar quais fatores presentes em ambientes colaborativos favorecem a constituição de processos formativos em Educação Matemática. Os resultados mostram que o planejamento de aulas, a prática docente e a produção de conhecimentos contribuem para a formação de professores de matemática.
 
Palavras-chave: Colaboração entre Professores. Formação de Professores. Educação Matemática. Revisão Sistemática.
A Geometria Elementar e Intuitiva de Gabriel Prestes
Authors: Silva Maria Célia Leme da
Published: March 2020

O presente estudo tem a intenção de compreender como Gabriel Prestes, considerado um expert (Hofstetter et al, 2017) da educação, por ocupar lugar de destaque na direção da Escola Normal de São Paulo, propõe o ensino de uma geometria escolar. A análise toma como fonte central o manual Noções Intuitivas de Geometria Elementar produzido por Prestes e publicado em 1895. O exame do manual fornece indícios de proposta inovadora: proximidade com a obra francesa de Paul Bert (1886), inversão na marcha dos conteúdos tradicionalmente apresentados ao propor um estudo direto das medidas de linhas, áreas e volumes para o segundo ano primário, uso de materiais como fios, barbantes, papelão, recortes de papel, construção de sólidos para um trabalho experimental, de comparação e discussão das medidas, o emprego do desenho à mão livre como auxiliar nas recapitulações. Entretanto, a perda de poder político e o afastamento de Gabriel Prestes da Educação são fatores que corroboram para que a sua proposta de uma geometria intuitiva não tenha feito escola.
 
Palavras-chave: Taquimetria. História do Ensino de Geometria. Grupos Escolares de São Paulo. Século XIX.
 
Abstract
The present study intends to understand how Gabriel Prestes, considered an expert (Hofstetter et al, 2017) of education, to occupy a prominent place in the direction of the Normal School of São Paulo, proposes the teaching of a school geometry. The analysis takes as its central source the Manual Notions Intuitive of Elementary Geometry produced by Prestes and published in 1895. The examination of the manual provides indications of an innovative proposal: proximity to the French work of Paul Bert (1886), reversal of the traditionally presented contents by proposing a direct study of the measurements of lines, areas and volumes for the second primary year, use of materials such as yarn, string, paperboard, paper cutting, solids construction for experimental work, comparison and discussion of measures, employment of freehand drawing as an aid in recapitulations. However, the loss of political power and the removal of Gabriel Prestes from Education are factors that corroborate so that his proposal of an intuitive geometry did not make school.
 
Keywords: Tachymetry. History of Geometry Teaching. School Groups in São Paulo. XIX Century.
As Manifestações do Raciocínio em uma Sequência Didática Sobre Função com o Auxílio de um Software
Authors: Gonzales Kátia Guerchi , Sales Antonio
Published: March 2020

Este trabalho é um recorte do relato de uma pesquisa experimental com o uso do software Graphmática. O experimento deu-se através de uma sequência didática com estudantes do ensino médio de uma escola pública de Campo Grande, MS. A metodologia utilizada foi a dialógica e teve por objetivo analisar a contribuição do software e da dialogia para fazer emergir os raciocínios classificados por Peirce como abdutivo, indutivo e dedutivo. Os resultados indicam que essa possibilidade existe, mas requer mais tempo de convivência com os estudantes para conquistar confiança e corrigir algumas fragilidades decorrentes da pouco familiaridade deles com a tecnologia de bancada, bem como, alguns vícios de notação e comunicação verbal construídos durante a vida escolar.
 
Palavras-chave: Graphmatica. Abdutivo. Indutivo. Dedutivo. Educação Matemática.
 
Abstract
This work is a cut of the report of an experimental research with the use of the software Graphmática. The experiment was carried out through a didactic sequence with high school students from a public school in Campo Grande, MS. The methodology used was the dialogic, which had as objective analyze the software's contribution and the dialogism to emerge the reasonings classified by Peirce as abductive, inductive and deductive. The results indicate that this possibility exists, but it requires more time with the students to gain confidence and to correct some weaknesses due to their lack of familiarity with bench technology, as well as some notation and verbal communication habits built during the school life. 
Keywords: Graphmatica. Abductive. Inductive. Deductive. Mathematical Education.
Stability of preemptive EDF queueing networks
Authors: Kruk Łukasz
Published: March 2020

We show stability of preemptive, strictly subcritical EDF networks with Markovian routing. To this end, we prove that the associated fluid limits satisfy the first-in-system, first-out (FISFO) fluid model equations and thus, by an extension of a result of Bramson (2001), the corresponding fluid models are stable. We also demonstrate that in a preemptive multiclass EDF network, after a time large enough to process all the initial customers to completion, the maximal number of partially served customers in the system over a finite time horizon converges to zero in \(L^1\) under fluid scaling.
Determinants of Cross-cultural Adjustment among Expatriate Employees: The Role of Personality
Authors: Sharma Ekta
Published: March 2020

The present paper examined the personality of the Indian expatriates. Along with the Multi personality questionnaire to assess personality, three levels of adjustment were also used. This paper focuses on such personal characteristics, like cultural empathy, open mindedness etc., as a personality characteristic that is expected to either facilitate or impede cross-cultural adaptation. In this research the Multi-culture personality questionnaire is administered on 340 expatriates out of which, 180 are from US and 160 are from Japan. The sample includes 204 males and 136 females. This study can also be helpful in the recruitment and selection process of the candidates for expatriation. Cultural empathy turns out to be the predictor of personal adjustment. Flexibility is strongly correlated to the social adjustment. Females are low on emotional stability & social Initiative. GEL Classification Code: J50; M12; M54
Quality Higher Education and Students’ Perception: A Study on Private Universities of Bangladesh
Authors: Rahman Md. Mizanur
Published: March 2020

This is a pragmatic study conducted to explore the quality higher education and students’ perception towards the private universities in Bangladesh. This study examines the relationship between the quality higher education and students’ perception using a structured questionnaire. A total number of 500 senior undergraduate and graduate level students from ten selected private universities in Bangladesh were taken as sample for conducting the study. The finding of this study discloses that the quality higher education is a dynamic factor that ensures the students’ perception. It also shows that quality higher education can create positive students’ perception towards the private universities in Bangladesh. Reliability, Responsiveness, Competence, Tangibility, Courtesy, Goodwill & Image, Empathy, Security and Costs are the dimensions of quality higher education. To quantify the variables a five point “Likert- type” scale has been used in this paper. The researcher conducted various analyses such as Multiple Regression Analysis, Descriptive Analysis, and ANOVA and identified a numerous key findings as to the students’ perception towards the quality higher education.

JEL Classification Code: I20; I23
Current Account Dynamics, Adjustment and Capital Mobility in Bangladesh
Authors: Alam Mohammad Masud , Khondker Rezai Karim , Molla Mohammad Shahansha
Published: March 2020

This paper examines current account (CA) dynamics, its relationship with the degree of capital mobility and the state of integration of the Bangladesh capital market with the global capital market. For the period 1976-2012, findings of AR (1) process shows a rigid CA position along with its slow adjustment and its inflexibility against real shocks, lower degree of capital mobility and a slow progress of capital market integration with the rest of the world. Compared to the period of fixed exchange rate regime, lesser degree of  rigidity has been observed during the flexible exchange rate period suggesting a smooth and flexible current account position; but shows an increased degree of rigidity and capital immobility for the overall time period under consideration. These findings reveal some important policy implications in respects of current and capital account liberalization, deregulation of domestic markets and removing entry barriers on the part of Bangladesh to boost up FDI and remittance inflows.
Employee-Organization Congruence and Job Performance: Development of a Conceptual Model
Authors: Perera G.D.N. , Khatibi A. , Navaratna N.N.J.
Published: March 2020

Research on Employee-Organization Congruence (EOC) has focused on the effect of EOC on individual performances. However EOC and job performance relationship and its contextual validity have not been explored in Sri Lankan apparel sector. This paper has explored the specific factors specially related to the Sri Lankan apparel sector work environment. Among these variables EOC considered as independent variable, job performance as a dependent variable. The conceptual model of this study investigates job related attitudes, namely job satisfaction and organizational commitment as two potential mediating factors for the  EOC and job performance relationship. Further organizational climate has been cited as possible moderating factor on EOC and job performance relationship. This paper makes a significant contribution to the body of knowledge with the proposed conceptual framework so that it can be used as a basis for the future research in this context. JEL Classification Code: J53; J58
Education and Health Status of Child Workers of Dhaka City
Authors: Khan Madiha
Published: March 2020

Children are the future of the country. Every child has the right to grow up in the right way. But it is a matter of great regret that child labor is highly prevalent in this country, and all child workers are deprived of their rights. Child workers are engaged in various types of works in Bangladesh. Many of the jobs that children perform in this country are considered hazardous and put their physical and mental development at risk. Child labor is work that deprives children of a childhood and affects their health and education. So, the government should take effective steps to withdraw children from hazardous jobs and offer incentives to attend school and improve law enforcement to eliminate child labor.

JEL Classification Code: J13; I18; K32
The EVA-based Performance Evaluation for Moutai in Nearly Three Years
Authors: Du Wei , Jin Yongxia , Zhang Si
Published: March 2020

This paper calculated the EVA index of Moutai by the method of empirical analysis. We first compare the Eva index with other similar indices and then compare the indexes of Moutai with other enterprises’ indexes. Finally, the conclusion obtained is that Moutai has achieved outstanding performance in nearly three years. The company is still faced with many challenges in operations; we come up with some effective measures.

JEL Classification Code: D04; D46
Green Insights of Textile Industry in Bangladesh: A Case Study on Mozart Knitting Ltd.
Authors: Aktar Mst. Afroja
Published: March 2020

The effectiveness of individual units of an Effluent Treatment Plant (ETP) agrees on the entire performance of the plant and the ultimately echoing effluent standard. In this study, an ETP of a composite textile industry in Bangladesh was investigated using this method. After completion of the stipulated study, findings came into force illustrated that water samples had been collected from the dyeing unit and accordingly had been used for the ETP and also been determined for the key parameters. The results were used to identify problems with the treatment units and broadly suggested for modifications. Simple but fully-bodied methodology was developed for assessing the performance of various treatment units and the ETP as a whole that could be implemented by ETP managers on a regular basis for improving the performance so that the effluent meets national standard as well as conforms to the requirements of international standard which is a compliance of the international buyers. To comply with the BB Guidelines commercial banks have taken initiatives on financing to the textile dyeing units in question with the implementation of ETP.  The ETP’s performance on Mozart Knitting Ltd. shown that it has been performing with the underprivileged management, especially chemical dosing were affecting the ETP’s performance and that simple measures could address the problems. A number of equipment i.e middle pathways rolling, water transferring pipes should repair without more ado.

JEL Classification Code: L67, K32
Vacas pastoreadas a estaca y su efecto sobre el consumo y condición de la pastura.
Authors: Vallejos Fernández Luis Asunción , Rojas Guevara Isabel Beatriz , Perinango Gaitán Javier Alejandro , Alcántara Mendoza Jorge
Published: March 2020

La investigación se realizó en Celendín - Cajamarca, a 2893 msnm, con el objetivo de determinar el efecto del pastoreo de vacas lecheras a estaca sobre el consumo (Kg MS) y condición de la pastura raigrás-trébol blanco, durante la época de lluvia. La muestra poblacional para determinar el consumo estuvo conformada por 117 vacas de raza Holstein, Brown swiss y Holstein x Brown swiss; y para condición de la pastura, por 120 hectáreas. El consumo se determinó midiendo el área de pasto asignado diariamente a los animales y cortando la pastura a ras del suelo, un mínimo de tres muestras, utilizando cuadrantes de 1 m2; las muestras fueron transportadas al Laboratorio de la Universidad Nacional de Cajamarca y colocadas en estufa a 105°C durante 24 horas. La condición de la pastura se basó en plantas forrajeras deseadas, suelo desnudo, especies no deseadas, aporte de leguminosas, vigor, uniformidad de uso, evidencias de sobrepastoreo y de compactación extrema del suelo. Se usó la estadística descriptiva con sus respectivos promedios, desviación estándar y coeficiente de variabilidad. Los animales consumieron en promedio 10.9 kg MS (2.6% de su peso vivo). La condición de la pastura promedio fue de 18.5 la cual es considerada como pobre. La magnitud de los resultados obliga a mejorar el manejo de las pasturas.
Prescribing pattern of antibiotics and susceptibility of pathogens in upper respiratory tract infections: a study from a tertiary care hospital
Authors: Srikanth Sashwath , Mohapatra Satyajit , Tharunya P. , Rani R. Jamuna
Published: March 2020

Background: Upper respiratory tract infections are mostly caused by viruses and are self-limiting. But it is seen that drug therapy is restored to many of them without adequate justifications. Sometimes multiple drug therapy imposes high cost burden on patients. Use of antibiotics in URTI patients have led to rise in bacterial resistance. So, this study was aimed to analyse the prescription pattern in upper respiratory tract infections and the antibiotic susceptibility of the isolated organisms.Methods: An observational cross-sectional study was conducted in a tertiary care hospital for a period of three months. Based on the inclusion and exclusion criteria sixty patients were selected. Prescriptions of these patients were collected and analysed for the various WHO prescription indicators like average number of drugs per encounter, percentage of drugs prescribed by generic names, percentage of drugs prescribed as injection, drugs form the essential drug list etc. The swabs were collected from the site of infections and were analysed for the bacterial growth. Also, the antibiotic susceptibility of these organisms was tested.Results: A total of sixty prescriptions were collected and analysed. The average number of drugs per prescription was 2.21. Antimicrobials were prescribed in 90% of cases. Approximately 50% cases the combination of amoxicillin and clavulanic acid was prescribed. The percentage of drugs prescribed by generic names was 87% and 68% drugs were form the essential drug list. The culture report of the specimen collected from the swabs showed that only 50% of cases were of some bacterial origin. And the organisms isolated were less susceptible to the antibiotics that were prescribed.Conclusions: This study of prescribing patterns in patients gives appropriate feedback and awareness among health care providers. Rationale prescribing practice will prevent antibiotic resistance and reduction in the adverse drug reactions.
Estudio de prospección geoquímica en sedimentos de las microcuencas Chirimoyo y Guineo, Ecuador
Authors: Manrique-Carreño John Luis , Guamán-Jaramillo Galo Alexander
Published: March 2020

Se llevó a cabo un muestreo de sedimentos fluviales en las microcuencas Chirimoyo y Guineo, en el sector Puyango, provincia de Loja, Ecuador, con el fin de hacer un estudio de prospección geoquímica, determinando valores anómalos estadísticamente de CaO (>3,46% en peso), MnO (>0,26% en peso), P2O5 (>12,63% en peso), V (>693 ppm), Zn (>709 ppm), Cu (>108 ppm) y valores subanómalos de U (>60 ppm) y Ni (>232 ppm) para la subcuenca Chirimoyo. En cuanto a la subcuenca Guineo se determinaron los siguientes valores anómalos: MnO (>0,47% en peso), TiO2 (>1,16% en peso), valores subanómalos de CaO (>7,01% en peso), P2O5 (>0,96% en peso), V (>1903 ppm), U (>50 ppm), Ni (>451 ppm) y Zn (>1306 ppm). De acuerdo a los mapas de anomalías geoquímicas los valores más altos de vanadio (2520 ppm en Guineo), uranio (70 ppm en Chirimoyo), zinc (1445 ppm en Guineo) y níquel (629 ppm en Guineo) se asocian a la parte norte de ambas microcuencas, específicamente en el norte de la microcuenca Guineo cercano al sector de La Sota, en donde afloran las rocas sedimentarias de la Formación Puyango, que contienen calizas bituminosas y lutitas negras calcáreas, las cuales puedan estar albergando mineralizaciones de estos elementos, esto se evidencia por los valores altos de Ca, lo que indica un origen carbonático de los sedimentos. Los sedimentos están compuestos principalmente de silicatos y aluminosilicatos (arcillas y micas), en menor proporción óxi-hidróxidos de Fe-Ti: goetita, magnetita y anatasa. Adicionalmente se detectó calcita y circón en dos muestras. Existe la presencia de minerales de vanadio como sherwoodita, rosita, ronneburgita y sincosita, lo cual corrobora las anomalías geoquímicas de vanadio determinadas mediante análisis químico
Performance evaluation of container-based virtualization for high performance computing environments
Authors: Arango Carlos , Dernat Rémy , Sanabria John
Published: March 2020

Virtualization technologies have evolved along with the development of computational environments. Virtualization offered needed features at that time such as isolation, accountability, resource allocation, resource fair sharing and so on. Novel processor technologies bring to commodity computers the possibility to emulate diverse environments where a wide range of computational scenarios can be run. Along with processors evolution, developers have implemented different virtualization mechanisms exhibiting enhanced performance from previous virtualized environments. Recently, operating system-based virtualization technologies captured the attention of communities abroad because their important improvements on performance area. In this paper, the features of three container-based operating systems virtualization tools (LXC, Docker and Singularity) are presented. LXC, Docker, Singularity and bare metal are put under test through a customized single node HPL-Benchmark and a MPI-based application for the multi node testbed. Also the disk I/O performance, Memory (RAM) performance, Network bandwidth and GPU performance are tested for the COS technologies vs bare metal. Preliminary results and conclusions around them are presented and discussed.