bluuebunny/crossref_metadata_2025 huggingface dataset:
TAM + ARCS = SNT Framework for Higher Education
Authors: Akella Nirupama R.
Published: September 2019

This chapter studies the challenge and issue of developing a sound social networking technology (SNT) framework to affect positive student engagement and consequently effective learning. The author aims to enable educational administrators, faculty, and curriculum designers to incorporate and seamlessly integrate SNT in curricula to foster effective and efficient learning. The chapter bases itself on the premise that higher educational institutions failing to develop and integrate social educational technology in their educational systems and policies will face major maintenance and existence issues. Contemporary dynamic technology, diverse learner populations coupled with different types of learning environments, and learning connotations necessitate the need for a robust SNT framework. The author researches the task technology fit (TTF) framework, discusses theories of TAM and ARCS, describes SNT of Twitter and Facebook, and uses a qualitative case study to develop and craft a SNT framework for higher education.
Infusing the Science of Learning Into a Higher Education Leadership Seminar at a Public University
Authors: Jasinski Lisa , Davis Coreen W. , Biggs Annie , Schell Julie A.
Published: September 2019

This chapter explores how one graduate-level seminar incorporated technology and insights from the science of learning to improve the delivery and assessment of course content. Drawing on the case study, “Technology and Innovation in Higher Education,” an elective seminar for master's and doctoral students taught at The University of Texas at Austin (2015-2017), the authors discuss the benefits of project-based learning, retrieval-based learning strategies, and the use of diverse teams in educational settings. The authors consider how technology was used in this blended-learning/hybrid course to more efficiently and effectively achieve the learning goals. The chapter concludes with practical recommendations for instructors who seek to incorporate insights from the science of learning in their graduate courses.
Digital Literacies in the Classroom
Authors: Mumpower Lori Ann , Branham Cassandra , Clevenger Aaron D. , Faulconer Emily , Watkins Alex
Published: September 2019

In efforts to improve students' digital literacies on a STEM-focused campus, one university created a digital literacies initiative to support both faculty and students. Faculty development programming supported the development of assignment parameters, detailed assessment rubrics, and scaffolding activities. A campus tutoring center was piloted to support students' acquisition of digital literacies. This chapter offers examples from three faculty members who participated in the digital literacies initiative and implemented digital literacy assignments in their courses. The researchers offer best practices for campuses interested in developing digital literacy initiatives.
Designing Engaging Assessments for Teaching the Digital Humanities
Authors: Datt Ashwini K. , Frost Jennifer , Light Rowan , Zizek Joseph
Published: September 2019

Humanities are pertinent to the digital culture of today. This chapter details how non-Humanities students are engaged in “Digital Humanities: From Text to txt,” a team taught, multidisciplinary course offered at the University of Auckland since 2016. Engagement across five Humanities disciplines—Art History, English Literature, History, Philosophy, and Religious Studies—is unified with the common theme of the “digital turn.” The course is modular with each discipline given a two-week block in a twelve-week semester. Students learn with and about technologies through a range of digital forms of engagement encountered in the Humanities. The course builds on students' digital curiosity to revisit questions of personal identity, ethics and belief, meaning, creativity, and historical understanding. Engagement begins in the lecture and tutorial and is deepened via five short assessments and an online final examination. Over the two iterations of the course, student satisfaction and pass rate was high and enrolments increased by 20%.
A Game-Based Student Response System
Authors: Ergulec Funda , Misirli Özge
Published: September 2019

In this chapter, a game-based student response system, Kahoot!, is investigated. The purpose of the chapter was to analyze instructors and pre-service teachers' perspectives about the use of this platform. The advantages and disadvantages of integrating this tool in the classroom was investigated. Pre-service teachers' feedback and instructors' experiences using Kahoot! in higher education classrooms indicate that pre-service teachers welcome the use of these kind of games. Kahoot! can be used not only to increase student participation in the classroom but also as a formative assessment tool. Kahoot! can provide an engaging learning environment and adds active participation in the classroom by appealing even the most introverted students. In addition, immediate feedback feature of this game-based learning platform provides opportunities for instructors to tailor their instruction based on student understanding on games.
Engaging Flipgrid
Authors: Craig Madeline
Published: September 2019

This chapter explores the use of Flipgrid for student engagement in a gradual three-level process of technology integration. The three levels of integration, or “immersion,” are acclimation, movement, and submersion, and this is demonstrated by comparing Flipgrid integration to a day at the beach. Flipgrid is a comprehensive tool that provides opportunities for educators to integrate it into their face-to-face, hybrid, and online courses to a limited extent or to fully use all of the features available to them at no cost. The background of Flipgrid, as well as the benefits of using video as an educational tool, was thoroughly researched to provide evidence to support the use of Flipgrid for student engagement and assessment. The chapter concludes by including the limitations of Flipgrid and future research directions.
Cultivating Student Engagement in a Personalized Online Learning Environment
Authors: Anderson Jeremy , Bushey Heather , Devlin Maura E. , Gould Amanda J.
Published: September 2019

Higher education has a national imperative to change the ways it supports its increasingly non-traditional populations who seek completion of college degrees in more flexible online environments. However, online education can present challenges to such students learning remotely and often independently, and who may struggle with accessing, understanding, and processing course content and achieving mastery of outcomes. A unique model based on technology and data-driven decision-making that is undergirded by two teaching and learning frameworks—adaptive learning and universal design for learning—is presented, along with outcomes and best practices. By adopting revolutionary methods of engaging students online and ensuring mastery of course and program learning outcomes, which enhance persistence and degree completion, such a model addresses this national educational imperative.
Game-Based Learning in an Online Environment
Authors: Ko Stephen , Kong Eric
Published: September 2019

A game-based learning team exercise was specifically designed as a teaching tool which aimed to unlock the black box of cultivating student engagement in an online learning environment. In the exercise, online distance learning students were divided into police and prisoner groups whereby they were required to use different resources for catching the prisoners or for escaping from the police on a virtual map. The team exercise helped to create an innovative online learning environment that was active, cooperative, and encouraged student engagement, these being some of the key elements to enhance the quality of student experience. To evaluate the effectiveness of this exercise, an experiment was conducted using survey data from undergraduate students in an online learning environment. Results showed that the online class with a team-based activity had significantly higher scores in students' behavioral engagement than the other online class without a team-based activity while the differences in cognitive and emotional engagements were not significant.
An Urgency for Change in Roles
Authors: Elçi Alev
Published: September 2019

Student dependence on technology, higher education institution efforts of digitalization in teaching and learning, along with the faculty member hesitancy to adopt innovative technologies all contribute to current challenges in higher education. The focus of this chapter is on exploring the gap between student and faculty perceptions about utilizing technology in teaching and learning, in addition to enlighten institutional roles and strategies to sustain efforts for managing such environments and faculty development. Multiple research methods are used to derive insights. The findings point towards the need to increase knowledge base and to expand faculty development around digital teaching and learning strategies as well as fostering student faculty collaboration to improve learner engagement and performance. As a result of changing roles, the pedagogical methods and technological tools used in digital teaching and learning process should not be a sole decision of the institution, but as a result of a collaborative mindset of institution, faculty, and students.
Decoding Cool in Indian Context
Authors: Verma Harsh V. , Duggal Ekta
Published: September 2019

The term cool is both nebulous and valuable. It contains some magical property which transforms perceived value of anything to which it is added as prefix. Therefore, marketers want to make their brands cool for superior outcomes. But the challenge lies in apprehending what cool actually stands for and how to use it in brand building. This paper explores meaning of cool by tracing its genesis in theological texts and popular culture. Cool has connections with theological discourses of religions like Hinduism, Stoicism, and Buddhism. Buddhism's fundamental tenet is cultivation of equanimity. Hinduism's sacred text Bhagavat Gita exhorts development of control over senses. Stoicism's core principle is ‘Ataraxia' or indifference. Cool in popular culture originated from the sites of slavery by people who cultivated an attitude to calmness as means to survive in punishing conditions. This study assumed cool as a signifying system and sought to uncover the hidden meaning for which it stands. It found that cool stands for four human facets: composure, paradox, good, and cheeky.
Disruption in HR Through Inclusive Emotional Culture
Authors: Ghosh Nitu
Published: September 2019

Diversity in workforce has demanded the need to develop inclusive culture that suffices the needs, interests, and emotions of all equally. High-performing organizations have incorporated emotions in their mission, creating an emotional culture that accentuates emotional intelligence of their talent force rather than suppression of emotions. The chapter explains how and why organizational cultures are transforming into inclusive emotional cultures. Through an analysis of cases of Indian multinationals, the antecedents and outcomes of Inclusive emotional culture is described through Inclusive Emotional Culture Framework model. Views of HR managers are expressed through content analysis qualitative technique. The chapter provides a key to sustainable development of Indian businesses amidst the doldrums of global business environment through inclusive emotional culture integrating values of long-term sustenance and development.
Commercial Real Estate-Specific Approaches and Ethical Dilemmas in the Relationship Between Stakeholders
Authors: Oncioiu Ionica , Popovici Dan Adrian , Ungureanu Hrisanta Cristina , Bîlcan Florentina Raluca
Published: September 2019

The chapter considers a similarity between Maslow's and Corporate Social Responsibilities pyramids. Various groups of stakeholders may have opposite interests in relationship with related companies, generating moral dilemmas. An analysis of organizational and economic accounting patterns in commercial real estate is provided with examples of companies listed to Stock Exchange. These common patterns are in accordance with all professional standards, but still do not offer sufficient information for an informed investment decision of an average investor. The choice of accounting policy is one of the reasons why real estate industry is perceived as a high risk, as a high degree of subjectivity applies through the choices of accounting treatment. Conflicts between stakeholders should be avoided due to the direct impact on a company's development perspectives and value.
Management Accounting in the Digital Economy
Authors: Căpușneanu Sorinel , Topor Dan Ioan , Maria (Oprea) Constantin Dana , Marin-Pantelescu Andreea
Published: September 2019

This chapter presents the evolution and perspectives of management accounting in the digital economy. The main objectives of this chapter are to present the different conceptual approaches of the digital economy and Industry 4.0, the B20 pillars and their impact on the management accounting, the role of management accounting and of the management accountant in the new economy, forecasts and solutions regarding the adaptation of the management accounting to the digital economy, and cost management of the implementation of innovative information technology. All aspects presented are based on national and international professional studies and attempt to present the current state of the themes addressed. The chapter ends with the author's conclusions regarding management accounting in the digital economy. Through the authors' contribution, the chapter offers perspectives and solutions to increase knowledge to implement information technologies and adapt accounting management to these innovative waves.
Uncommon Sources of Finance and Sustainability, Growth and Development of Small Medium-Scale Enterprises in Nigeria
Authors: Gbadebo Abraham Oketooyin
Published: September 2019

This chapter presents uncommon sources of financing SMEs. Finance is indispensable factor for development and growth of SMEs everywhere in the world. However, few people are acquainted to alternative sources of financing SMEs other than the traditional mediums. In Nigeria, lack of knowledge on non-traditional sources of funding has either contributed to the death or slow pace of development of SMEs. Some of the uncommon sources are crowdfunding, merchant cash advance, elusive business grant, and small business administration. In the chapter, the author exposes these sources as well as present guidelines on how they could be accessed.
Does Financial Development Lead to Employment and Growth?
Authors: Gündüz Murat , Özyıldırım Yunus
Published: September 2019

Financial systems, which play a major role in the development of the economy, are primarily helping to fund flow and assist in capital increase. In this study, frequency domain causality test, which was developed by Geweke and Hosoya and developed by Breitung and Candelon, was used to analyze the causality relationship by short, medium, and long periods. This test, which provides periodical examination, was investigated to determine the effect of G7 countries on employment and growth of financial institutions and markets index used to calculate financial development index. Among the G7 countries, the development of financial markets and institutions has been affecting employment in Canada (short-medium), Germany (medium-long), Japan (short-medium-long), and the UK (medium-long); in addition, when the effects of economic growth on financial markets and institutions are investigated, Canada (short-medium), France (medium), Italy (medium-long), America (medium-long), Germany (medium-long), Japan (short-medium-long), and UK (short-medium-long) were determined by analysis.
The Concept of Shared Value in the Theory of Sustainable Finance
Authors: Cheba Katarzyna , Bąk Iwona Dorota
Published: September 2019

The main purpose of this chapter is to identify the existing relations between the selected areas of sustainable development but carried out on the basis of the indicators describing the macroeconomic dimension of this development from the OECD countries' perspective. The theoretical basis for analyses is the concept of shared value, for the first time presented by Porter and Kramer in 2011. In this chapter, this proposition was applied to the studies carried out on the country level. For this purpose, the multidimensional statistical analysis was applied. The results of the study confirmed that on the current level of development, even in the case of the most developed countries, it is very difficult to find the shared space with the same level of development between these areas. In the same time, it is very important direction of further research and decisions undertaken on the macroeconomic level.
Shock Theory
Authors: Pilipenko Zoya Andreevna
Published: September 2019

The purpose of this chapter is connected with the rationale for the approach to understanding shock as an economic phenomenon in terms of its nature and forms of manifestation, the conditions of aging and the factors of realization, the mechanism of self-development, and the consequences for the sustainability of the national financial and economic systems. The author's interest is initially aimed at identifying the circumstances in which the system loses its ability to restore sustained structural relationships and to preserve integrity in the sphere of national finance and economy. An approach allowing the identification of the transmission mechanisms connected with market exchange that can generate marginal states of economic structural links as necessary and sufficient conditions for the destructive shocks impact on them is identified. Based on the obtained theoretical conclusions, it becomes possible to model the marginal states of different structural relationships and evaluate their impact on the sustainable state of economic systems as a whole on the base of shock theory.
Trade-Off Between Intergenerational Equity and Economic Growth
Authors: Makarova Nataliya Sergeevna
Published: September 2019

The global financial crisis of 2007-2008 posed the problems of the slowing world economy growth rates that predetermined the necessity to investigate a national economy's structural characteristics associated not so much with the objective, easily modeled factors of its development as with the subjective ones, difficult to be understood but increasing in importance. The latter is connected with inequity in the simultaneously living generations' perception, which is fueled by the trends of accelerated income polarization of the population, the middle-class reduction, and decreasing possibilities of achieving higher living standards for the socially vulnerable groups. All the above predetermines the behavior of economic agents in society and ultimately the prospects for the long-run economic growth in the country. The author conducted a model experiment with the dynamics of intergenerational equity and economic growth on the basis of the sub-martingale. The results show the growing importance of the human factor in ensuring the stable growth of the global economy.
Education and Theory of Psychological and Cognitive Barriers
Authors: Pilipenko Andrey Igorevich
Published: September 2019

The author identifies the psychological and cognitive barriers (PCBs) in the students' consciousness in schooling as the very important factor of the contemporary education system crisis. Focusing on the unresolved “how to learn” problem, the author reveals the essence of PCBs, their causes, and models for overcoming them. At the same time, the main attention is paid to the social aspect of insurmountable PCBs at school. It is about the education failure of schoolchildren, which predetermines their life and professional failure. And this, in turn, predetermines their negative value orientation in social exchange. As a result, the society receives a low-quality educational component of human capital, which is less and less in demand on the labor market due to the technological challenges of the future. The PCBs overcoming creates conditions for the success of schoolchildren as future carriers of high-quality human capital, able to ensure stable economic growth thanks to the activities of highly educated and intellectually autonomous professionals.
Strategic Corporate Decision Making With Market and Liquidity Risk Management
Authors: Al Janabi Mazin A. M.
Published: September 2019

This chapter examines a practical methodology for the assessment and control of market and liquidity risk exposures for financial trading portfolios that consist of certain equity assets. The applied technique is based on the contemporary concept of liquidity-adjusted value at risk (LVaR) along with the application of optimization risk-engine algorithms. This chapter proposes a broad market and liquidity risk management model that can concurrently perform LVaR estimation under regular and stressed market scenarios. It takes into account the effects of illiquidity of traded equity assets. In order to demonstrate the appropriate application of LVaR and stress-testing techniques, real-world case analysis of trading risk management are presented for the Gulf Cooperation Council (GCC) stock markets. To this end, a number of optimization case studies are examined with the aim of developing a novel technique of trading risk measurement as well as the implementation of a risk optimization process for the computation of the maximum permitted LVaR limits.
Assessment and Management of ID in Childhood
Authors: Chowhan Sumita P. , Patowary Plabita
Published: September 2019

Intellectual disability is a neurodevelopment disorder that affects the intellectual and adaptive functioning. The individual fails to meet standards of personal independence and social responsibility in one or more aspects of daily life, including communication, social participation, academic or occupational functioning, and personal independence at home or in community settings. There is an immense need to understand and be aware of the signs and symptoms of the disorder. This chapter focuses on the process of the assessment which is necessary to identify intellectual deficiency and also the issues that should be taken care of during the process. The various principles and tools of assessment, which can be used to measure IQ, are mentioned. It also focuses on the various challenging behaviors and functional analysis. It also focuses on recent and efficient management strategies that can be used to help the affected person cope and acquire new skills.
An Overview on Issues Among Individuals With Intellectual Disability in India
Authors: Behrani Priyanka , Deka Dorothy Bhandari
Published: September 2019

Intelligence is the general mental capacity that involves reasoning, planning, solving problems, thinking abstractly, comprehending complex ideas, learning efficiently, and learning from experience. Intellectual disability (previously termed “mental retardation”) shows significant cognitive deficits (IQ score of below 70, i.e., two standard deviations below the mean of 100 in the population) and also significant deficits in functional and adaptive skills. Individuals with intellectual disability meet with various challenges in every span of life. The chapter tries to highlight some of the areas that are related to the concerns for the people with intellectual disability.
Reflecting on Crime and Legal Issues in People With Intellectual Disabilities
Authors: Giannouli Vaitsa
Published: September 2019

This chapter discusses research findings on intellectual disability (ID), criminal law, and the different forms of aggressive behavior such as sexual violence, homicide, theft, arson, and alcohol-drug abuse. ID is a generalized neurodevelopmental disorder, characterized by significantly impaired and varying intellectual-adaptive functioning. Given that a number of legal issues have been raised over the past decades regarding individuals with ID and civil as well as criminal law, particular attention will also be given to neuropsychological research regarding civil law and the most common problems for individuals with ID, such as financial capacity and capacity for medical consent. Finally, there will be a section for the most important issues regarding the trial and conviction for individuals with ID, and a presentation of a research on attitudes toward ID and legal issues. The chapter concludes with suggestions for reform of the law relating to ID and the need for further research.
Interface Tesseracto UI and the Hologram
Authors: Mucheroni Marcos Luiz
Published: September 2019

Building Tesseracto UI-type holographic interfaces is one step significant interaction in interfaces of computational devices with interaction in 3D. This follows the idea that the best user interface is no interface device, in the space of the hypercube and the fourth dimension. The contact device detects haptic interfaces, at the same time the touch in a free space as contact is made from fine ultrasonic sensors corresponding to the hologram images. The prototype was developed using the vertical and horizontal ultrasonic devices and a display hologram. The device is still in the testing phase, but the connection with the computer screens is already possible, in a prototype environment.
CSMDSE-Cuckoo Search Based Multi Document Summary Extractor
Authors: Rautray Rasmita , Balabantaray Rakesh Chandra , Dash Rasmita , Dash Rajashree
Published: September 2019

In the current scenario, managing of a useful web of information has become a challenging issue due to a large amount of information related to many fields is online. The summarization of text is considered as one of the solutions to extract pertinent text from vast documents. Hence, a novel Cuckoo Search-based multi document summary extractor (CSMDSE) is presented to handle the multi-document summarization (MDS) problem. The proposed CSMDSE is assimilating with few other swarm-based summary extractors, such as Cat Swarm Optimization based Extractor (CSOE), Particle Swarm Optimization based Extractor (PSOE), Improved Particle Swarm Optimization based Extractor (IPSOE) and Ant Colony Optimization based Extractor (ACOE). Finally, a simulation of CSMDSE is compared with other techniques with respect to the traditional benchmark datasets for summarization problem. The experimental analysis clearly indicates CSMDSE has good performance than the other summary extractors discussed in this study.
A GPU Based Approach for Solving the Workflow Scheduling Problem
Authors: Benhammouda Mohammed , Malki Mimoun
Published: September 2019

Cloud computing is considered a new way to use on-demand computing resources. When executing a workflow process in such an environment, task scheduling, a well-known NP-hard problem is a very important step. Many heuristic algorithms have been proposed to solve this problem. In this article, the authors present a GPU-based approach for solving the workflow scheduling problem. The main idea of the approach is to implement a massively parallel version of the simulated annealing algorithm, in an asynchronous way where no information is exchanged among parallel runs. The proposed approach, called PSA algorithm, is against another well-established scheduling HEFT heuristic. Experiments with randomly generated graphs show a much better performance from the proposed approach.
Efficacious Hyperlink Based Similarity Measure Using Heterogeneous Propagation of PageRank Scores
Authors: Thangasamy Vasantha
Published: September 2019

Information available on the internet is wide, diverse, and dynamic. Since an enormous amount of information is available online, finding similarity between webpages using efficient hyperlink analysis is a challenging task. In this article, the researcher proposes an improved PageSim algorithm which measurse the importance of a webpage based on the PageRank values of connected webpage. Therefore, the proposed algorithm uses heterogeneous propagation of the PageRank score, based on the prestige measure of each webpage. The existing and the improved PageSim algorithms are implemented with a sample web graph. Real time Citation Networks, namely the ZEWAIL Citation Network and the DBLP Citation Network are used to test and compare the existing and improved PageSim algorithms. By using this proposed algorithm, it has been found that a similarity score between two different webpages significantly increases based on common information features and significantly decreases based on distinct factors.
Civic Engagement of Students
Authors: Huda SSM Sadrul , Kabir Tanveer , Siddiq Tanvir Alam
Published: September 2019

This article aims to figure out the impact of civic engagement of students in Bangladesh. Developed countries are well aware about the importance of civic engagement of the student community nowadays. Their educational system is already structured in a manner which encourages civic engagement in educational life. There are a lot of studies in developed countries regarding student participation in civic engagement. It is seen that the educational system and curriculum in Bangladesh does not incorporate civic engagement. However, there is some skill sharing institutions that has started engaging students in civic activities. Students are learning leadership skills, gaining practical knowledge besides academic, experiencing innovation and becoming responsible citizens of the country. This article focuses on some practical scenarios through which students were engaged with civic activities, which, in turn, positively affect the academic and non-academic achievements of the students in Bangladesh.
Voice and Accountability
Authors: Eshiet Idongesit
Published: September 2019

The article assesses the importance of citizen engagement in engendering good governance in the health sector. However, citizens need an effective ‘voice' in order to be heard. Thus, the article argues for the need to utilise existing civic organizations like the rural women's associations as platforms of civic engagements. Using Akwa Ibom state as a study location, the article investigated the role of rural women's associations in citizen engagement in the primary health sector. Findings reveal that although rural women's associations are engaged in diverse socio-economic and political activities, they however do not engage in socially accountable activities. Nevertheless, findings further reveal that associations have the potentials of becoming platforms for social accountability if harnessed by development partners. The argument of the study is anchored on the participatory development approach which argues about the need for beneficiaries of development to become active participants in the development process.
Jokowi's Political Communication Especially Self-Image in 2014 Presidential Election
Authors: Nasution Belli
Published: September 2019

The purpose of this study is to describe Jokowi's political communications, especially self-image in the 2014. This study uses qualitative research methods that aim to describe what happened to the situation or event in this study and not test hypotheses or make predictions. The advertisement aired in all national electronic mass media with various versions. In print, advertisements are displayed in the form of newspaper headlines. Through semiotic analysis, it can be explained that mental revolution advertisement is dissected based on the meaning of denotation, connotation, mythical study, and ideological study. This mental revolution advertisement tries to construct Jokowi's positive image to the public. In doing so, political consultants (the success teams) try to build political communication through four stages of perception, cognition, motives, and attitudes. This article shows a semiotic analysis to describe the communication techniques of Jokowi.
How Do Adolescents Obtain Health Information
Authors: Stars Inese , Rubene Zanda
Published: September 2019

Adolescent health literacy is a promising innovation in health education. This article reports the findings of research in the experience of adolescents in the methods they used in obtaining health information. A phenomenographic research approach was used to understand how adolescents conceptualized health information obtaining. The study examined data provided by 24 adolescents aged 13 to 16 living in Latvia. The data was collected through qualitative interviews. Phenomenographic data analysis uncovered five categories of description by adolescents in the way they perceived health information obtaining: 1. An opportunity to find out “things” regarding health; 2. The use of different sources of information to obtain health information; 3. The use of multimodal texts to obtain health information; 4. A passive method of obtaining information; and 5. An active method of obtaining information. It is important to integrate the experience of adolescents into health education research to develop a deeper understanding of the pedagogical phenomenon and to enhance health education programmes.
A Gap Principle for Subvarieties with Finitely Many Periodic Points
Authors: Huang Keping
Published: September 2019

Let$f:X\rightarrow X$be a quasi-finite endomorphism of an algebraic variety $X$defined over a number field $K$and fix an initial point$a\in X$. We consider a special case of the Dynamical Mordell–Lang Conjecture, where the subvariety $V$contains only finitely many periodic points and does not contain any positive-dimensional periodic subvariety. We show that the set$\{n\in \mathbb{Z}_{{\geqslant}0}\mid f^{n}(a)\in V\}$satisfies a strong gap principle.
Dense Orderings in the Space of Left-orderings of a Group
Authors: Clay Adam , Reimer Tessa
Published: September 2019

Every left-invariant ordering of a group is either discrete, meaning there is a least element greater than the identity, or dense. Corresponding to this dichotomy, the spaces of left, Conradian, and bi-orderings of a group are naturally partitioned into two subsets. This note investigates the structure of this partition, specifically the set of dense orderings of a group and its closure within the space of orderings. We show that for bi-orderable groups, this closure will always contain the space of Conradian orderings—and often much more. In particular, the closure of the set of dense orderings of the free group is the entire space of left-orderings.
Pre-service teachers’ perceptions towards role of E-learning in science education in teacher training institutions
Authors: Osuji Catherine U. , Nwoke Bright Ihechukwu
Published: September 2019

The study investigated the perception of pre-service teachers towards the role of E-learning in science education in teacher training institutions. The study was carried out in Alvan Ikoku Federal college of Education Owerri, Imo state Nigeria. The sample consists of 350 final year science pre-service teachers drawn through stratified random sampling technique. The descriptive survey research design was adopted in carrying out the study. The instrument used to gather data required for the study was researchers made Likert four-point type of questionnaire titled “Role of E-learning in Science Education (RESE)”. The instrument had reliability coefficient of 0.82 determined using the Cronbach’s alpha formula. The data generated were analyzed using mean and standard deviation to answer research questions while the hypothesis was tested using t-test statistical tool at 0.05 level of significance. The result of the study revealed that pre-service teachers had positive perceptions towards the role of e-learning in science education as it helped in extended learning, individual learning, access to learning materials, understanding of course content and others. Based on the result of the study it was recommended that, the application of e-learning should be incorporated in the training of science pre-service science teachers to enable them understand their course materials.Key words: Pre-service teachers, Role, E-learning, Science education
An assessment of the role of non-farm sources in household income diversification in Oyo State
Authors: Daramola A.O. , Fashoto B.T. , Ogunbiyi T.F. , Ekpeni N.M.
Published: September 2019

Agriculture is the major income source in Nigeria’s rural areas. Climatic variability and rising cost of agricultural inputs and household consumables without corresponding rise in agricultural product prices are however driving noted rural farmers to adopt alternative livelihood strategies. Charcoal production has now become a significant source of supplementary income for residents of rural communities in several parts of Nigeria. This study assessed the role of non-farm sources in household income diversification in Oyo state with focus on the contribution of charcoal production and its implication for sustainable development. Participatory rural appraisal techniques of Focus Group Discussion (FGD) and structured interview/questionnaire were adopted. Results of the social survey indicated that farming is still the dominant activity in the region with about 80% of the respondents involved. Households employed an average of 2 income activities with share of off-farm income and Herfindahl Diversification Index of 0.68 and 0.78 respectively, showing a high magnitude of diversification. An adaptation cycle was also constructed based on their current realities, to guide specific interventions. Formalization of production activities and development of other economic activities were suggested to ensure sustainability of forest resources in the area.Key Words: Agriculture, Charcoal, Household income, Forest management
Tildrakizumab in the treatment of psoriasis – literature review
Authors: Banaszczyk Katarzyna
Published: September 2019

Psoriasis is a chronic, inflammatory disease. The incidence of its occurrence in developed countries is 1–4%. The aim of this study is to present the current state of knowledge and characterize the antibody tildrakizumab, which in March 2018 was approved by the FDA agency for use in adult patients with moderate to severe plaque psoriasis. The work presents the mechanism of action of tildrakizumab and the way it affects the immunological pathways associated with the pathogenesis of psoriasis. Recent studies indicate that interleukin 23 and its p19 subunit are a key target in the effective treatment of psoriasis. The paper also presents the latest clinical trials that present the safety profile and efficacy of tildrakizumab in the treatment of psoriasis. According to clinical trials, tildrakizumab is an effective and safe drug for use in adult patients in the treatment of moderate to severe psoriasis.
Acute coronary syndrome leading to revision of a co-morbid condition in a young man with arthritis
Authors: Smiyan Svitlana , Komorovsky Roman , Tomashchuk Nazarij
Published: September 2019

Although patients with rheumatoid arthritis (RA) may have an increased incidence of cardiovascular events, the development of coronary artery disease and of myocardial infarction at young age is rather uncommon. Herein, we report a case of a 26-year-old man without classical cardiovascular risk factors, but with a 2-year history of RA, who experienced recurrent episodes of angina-like chest pain. His electrocardiogram showed ST-elevation and T-wave inversion in anterior chest leads, and the patient was sent for coronary angiography, which revealed multivessel coronary artery disease. Subsequently, the patient underwent coronary artery bypass grafting. Closer analysis of the patient’s history and of the laboratory findings led to revision of the diagnosis of RA: the patient was found to meet the classification criteria for systemic lupus erythematosus. Pitfalls of the classification criteria and the impact of the revised diagnosis on the patient’s care are discussed.
Het succes van een case-mix informatiesysteem in een universitair medisch centrum
Authors: Asselman Franck
Published: September 2019

Uit buitenlandse studies blijkt dat de implementatie van case-mix informatie in ziekenhuizen kan leiden tot positieve resultaten. Maar er zijn ook studies waarbij implementaties mislukten en leidden tot negatieve effecten, zoals machtsconflicten en discussies over de gegevens. Dit artikel beschrijft de uitkomsten van een promotieonderzoek naar het ontwerp en gebruik van case-mix informatie in het Amsterdam UMC, locatie Academisch Medisch Centrum (AMC). Hieruit blijkt dat case-mix informatie in deze context bijdraagt aan beter inzicht in patiëntengroepen en zorgprocessen, meer gefundeerde beslissingen, een stijging van kostenbewustzijn, verbeterde registraties en kostenbesparing. Daarmee wordt de zorg beter én goedkoper. Wel zijn er nog diverse obstakels om deze informatie te gebruiken.
Estudio de la producción en un aserradero de corte cualitativo a través del uso de simulación de eventos discretos y diseño de experimentos
Authors: Vergara-González Francisco P. , González-Ríos Patricio E. , Rojas-Espinoza Gerson , Montero-Nahuelcura Claudio A.
Published: September 2019

Introducción: Al aserrar trozos sin clasificación, el programa de corte genera decisiones y rutas dependiendo de la apariencia de la pieza y carga de máquinas. 
Objetivo: Optimizar el flujo de producción de un aserradero de corte cualitativo de Pinus radiata D. Don, mediante la detección y análisis de máquinas críticas, utilizando la simulación de eventos discretos y diseño de experimentos.
Materiales y métodos: Se desarrollaron dos modelos de simulación para el aserrío de trozos con longitudes de 2.5 y 5.0 m, diámetro entre 34 y 44 cm y espesor de 5/4” con ancho variable. La cantidad de trozos procesados por turno fue la variable respuesta del modelo. Las máquinas de amplio uso y los transportes con largas colas fueron candidatos a máquinas críticas. El impacto sobre la producción se determinó mediante un diseño de experimentos, donde los factores evaluados fueron: (A) entrega desde el carro sierra cinta 1 a sierra cinta 3, (B) aumento de capacidad del descortezador, (C) fallas eliminadas de las sierras cintas carro 1 y 2, y (D) entrega directa de sierra cinta 2 a canteadora 2.
Resultados y discusión: Se propusieron modificaciones al flujo de producción debido a que los factores B, C y D aumentaron significativamente (P = 0.1) el nivel de producción (trozos por turno); los incrementos con respecto a la condición inicial del aserradero fueron 13 y 18 % para las longitudes de 2.5 y 5.0 m, respectivamente. 
Conclusión: La simulación y diseño de experimentos pueden aplicarse en aserraderos pequeños y medianos, para mejorar la producción cuando se procesan trozos sin clasificación.
Conocimiento campesino sobre los suelos de la Reserva de la Biosfera Zicuirán-Infiernillo
Authors: Bautista Francisco , Barajas Alma , Alcalá-de Jesús María
Published: September 2019

Introducción: Los campesinos de La Huacana, Michoacán, han generado conocimiento local sobre los recursos naturales, entre ellos el suelo. 
Objetivo: Comparar el conocimiento local del suelo con el conocimiento técnico para dilucidar si los campesinos identifican los horizontes y les asignan nombres y atributos. 
Materiales y métodos: Se realizaron 31 calicatas y se describieron los perfiles junto con los campesinos. Se tomaron muestras por horizontes y estratos para determinar sus propiedades en el laboratorio. Los datos generados se sometieron a un análisis discriminante y análisis de componente principales. 
Resultados y discusión: Las clases de suelo presentes en el área de estudio fueron: Polvilla, Barrosa, Charanda, Tocura, Cementante, Cascajo, Balastre y Tepetate. Los campesinos nombraron los horizontes/materiales del perfil de suelo como clases de suelo, por lo que es posible encontrar varias clases de suelo en un perfil. Estas se diferenciaron estadísticamente en el perfil a partir de las propiedades físicas y químicas; 72.13 % de los casos fue clasificado correctamente. 
Conclusión: Por primera vez se reporta que los nombres de las clases de suelo correspondieron a los horizontes y capas de suelos enterrados recientemente y no al perfil de suelo completo.
Concentración mundial de exportaciones de MDF (Medium Density Fiberboard)
Authors: Coelho Junior Luiz Moreira , De Sousa Selvatti Thaisa , Vanderlei Alencar Filipe , Lopes da Silva Márcio , Pereira de Rezende José Luiz
Published: September 2019

Introducción: Proyectado para fines nobles, Medium Density Fiberboard (MDF) es un panel de madera reconstituida que se usa para reproducir diseños y detalles de madera. 
Objetivo: Analizar la concentración mundial de las exportaciones de MDF en el periodo de 1995 a 2016.
Materiales y métodos: La información se obtuvo en la división estadística de la Organización de las Naciones Unidas para la Alimentación y la Agricultura (©FAO Statistics Division). La concentración de las exportaciones se midió con los indicadores siguientes: razón de concentración (CR[k]), índice de Herfindahl–Hirschman (HHI), índice de entropía de Theil (E), índice de concentración comprensible (CCI), índice de Hall y Tideman (HTI) y coeficiente de Gini (G). 
Resultados y discusión: Las exportaciones de MDF crecieron anualmente 9.44 %, siendo China y Alemania los principales exportadores. La CR(k) indicó concentración moderadamente baja, pero con estructura de mercado oligopolista con extremidad competitiva. Los análisis de los indicadores HHI, E, CCI y HTI indican que hay baja concentración y G infiere desigualdad fuerte que tiende a la absoluta. 
Conclusión: Las exportaciones mundiales de MDF presentaron una estructura de mercado oligopolista con extremidad competitiva.
Chemical discrimination of the particulate and gas phases of miniCAST exhausts using a two-filter collection method
Authors: Ngo Linh Dan , Duca Dumitru , Carpentier Yvain , Noble Jennifer A. , Ikhenazene Raouf , Vojkovic Marin , Irimiea Cornelia , Ortega Ismael K. , Lefevre Guillaume , Yon Jérôme , Faccinetto Alessandro , Therssen Eric , Ziskind Michael , Chazallon Bertrand , Pirim Claire , Focsa Cristian
Published: September 2019

Abstract. Combustion of hydrocarbons produces both particulate and gas phase emissions responsible for major impacts on atmospheric chemistry and human health. Ascertaining the impact of these emissions, especially on human health, is not straightforward because of our relatively poor knowledge of how chemical compounds are partitioned between the particle and gas phases. Accordingly, we propose to couple a two-filter sampling method with a multi-technique analytical approach to fully characterize the particulate and gas phase compositions of combustion by-products. The two-filter sampling method is designed to retain particulate matter (elemental carbon possibly covered in a surface layer of adsorbed molecules) on a first quartz fiber filter while letting the gas phase pass through, and then trap the most volatile components on a second black carbon-covered filter. All samples thus collected are subsequently subjected to a multi-technique analytical protocol involving two-step laser mass spectrometry (L2MS), secondary ion mass spectrometry (SIMS), and micro-Raman spectroscopy. Using the combination of this two-filter sampling/multi-technique approach in conjunction with advanced statistical methods we are able to unravel distinct surface chemical compositions of aerosols generated with different set points of a miniCAST burner. Specifically, we successfully discriminate samples by their volatile, semi-volatile and non-volatile polycyclic aromatic hydrocarbon (PAH) contents and reveal how subtle changes in combustion parameters affect particle surface chemistry.