bluuebunny/crossref_metadata_2025_split huggingface dataset:
Análisis de los grupos de investigación colombianos en ciencias económicas desde una perspectiva de género
Authors: Gutiérrez Jenny Paola 
Published: September 2016

<p>A partir del cálculo de indicadores de género (distribución horizontal, distribución vertical, índice de feminidad, índice de masculinidad, índice de Duncan, índice de segregación e índice de contribución al sexismo) y el uso de representaciones artográficas temáticas, se presenta una aproximación cuantitativa sobre la brecha de género y la segregación departamental en el liderazgo de los grupos de investigación colombianos en las áreas de Economía y Administración, de acuerdo con la información disponible hasta junio de 2012. Se halló que el liderazgo femenino de grupos de investigación en las dos disciplinas es inferior al promedio nacional; las tasas de graduación mujeres de pregrado y posgrado entre 2000 y 2010 no se reflejan en la composición de los grupos de investigación; la mayor parte de grupos de investigación liderados por mujeres se encuentran categoría D; en la mayoría de los departamentos hay líderes de grupo de ambos sexos, pero superan en cantidad los hombres a las mujeres; al igual que en el contexto nacional los grupos de investigación, para ambos casos, se concentran en Bogotá, Antioquia y Valle del Cauca.</p>
La incidencia de la innovación sobre la creación de valor: propuesta de un modelo desde la perspectiva financiera
Authors: Rivera Godoy Jorge Alberto 
Published: September 2016

<p>Se presenta un modelo conceptual que permite medir y gestionar los efectos de la innovación sobre el valor de la empresa. Como marco teórico se realiza una descripción de la innovación como un inductor estratégico de la cadena de valor de la organización, y, siguiendo los preceptos de la gerencia del valor, se presenta los métodos para calcular el valor económico agregado de la empresa, el valor de mercado agregado y el valor de empresa, y su relación con la innovación. El modelo muestra las variables de entrada y salida, y los factores que hacen parte de su proceso, posteriormente se dimensiona el impacto sobre el valor económico agregado de cada una de los tipos de innovaciones mediante la formulación de un modelo de regresión lineal múltiple. El modelo se enfoca a la evaluación de la intensidad de las inversiones en diferentes actividades de innovación.</p>
Las revistas académicas como plataforma para la construcción de conocimiento contable
Authors: Macías Cardona Hugo A. 
Published: September 2016

Las revistas contables latinoamericanas tienen un bajo nivel de desarrollo comparadas internacionalmente, sobre todo por sus escasos aportes a la academia contable mundial. La baja contribución y el desconocimiento que se tiene internacionalmente de las revistas de todas las áreas producidas en nuestra región, se ha llamado hace más de una década la “ciencia perdida”. En el número 12 de la <em>Revista Lúmina</em> se publicó un artículo sobre ese asunto (Macías &amp; Moncada, 2011), que ha causado reacciones diversas, entre ellas la expresada en el número 32 de <em>Cuadernos de Contabilidad </em>(Rueda, 2012) y las apreciaciones que estamos planteando en este número de <em>Investigación y Reflexión</em>, con los profesores, Fredy León-Paime y Mauricio Gómez. En este aparte, se propone una reflexión sobre los avances y uno de los desafíos que enfrentan las revistas contables en Colombia.
Medición de las formas de onda en la caracterización de dispositivos de microondas: impacto en el diseño de amplificadores de potencia
Authors: Quaglia Roberto , Bell James , Cripps Steve , Tasker Paul 
Published: September 2016

Este artículo describe un ejemplo de setup, para la medición de las formas de onda durante la caracterización load-pull de un dispositivo de microondas con alta capacidad de potencia. La significancia de está característica de la medición, se resalta al estudiar la forma en la cual puede ser utilizada, en el diseño de amplificadores de microndas con altas potencias de salida y alta eficiencia.
Challenges and instructors’ intention to adopt and use open educational resources in higher education in Tanzania
Authors: Mtebe Joel Samson , Raisamo Roope 
Published: September 2016

<p>Higher education in Tanzania like in many other Sub-Saharan countries suffers from unavailability of quality teaching and learning resources due to lack of tradition, competence, and experience to develop such resources. Nevertheless, there are thousands of open educational resources (OER) freely available in the public domain that can potentially improve the quality of existing resources or help to develop new courses. The uptake and reuse of these resources in higher learning institutions (HLIs) in Tanzania has been very low. The study applied the unified theory of acceptance and use of technology (UTAUT) model to elicit instructors’ intention to adopt and use OER in teaching. The paper also investigated challenges that hinder instructors to adopt and use OER. A sample of 104 instructors selected randomly from five HLIs was collected and tested against the research model using regression analysis. The study found effort expectancy had significant positive effect on instructors’ intention to use OER while performance expectancy, facilitating conditions, and social influence did not have significant effect. Challenges that were found to hinder instructors to adopt and use OER are discussed. The findings of this study will help those who are involved in OER implementation to find strategies that will maximize OER adoption and usage in higher education in Tanzania.</p>
Democratizing higher education: Exploring MOOC use among those who cannot afford a formal education
Authors: Dillahunt Tawanna R , Wang Brian Zengguang , Teasley Stephanie 
Published: September 2016

<p>Massive open online courses (“MOOCs”) provide free access to higher education for anyone with Internet access. MOOCs are considered a means for democratizing education. These courses will hopefully provide an opportunity for individuals to learn from the best educators in the world, as well as help expand their personal networks, and facilitate their career development. However, research thus far shows that the majority of people taking advantage of these courses are already employed, have post-secondary degrees, and have encountered few barriers related to the affordability of higher education. Little is known about MOOC learners with financial constraints and who do not fit the typical profile of MOOC learners. This paper presents the results of the analysis of data from six Coursera courses offered by the University of Michigan from fall 2012 through winter 2013. In this analysis learners who self-identified as being unable to afford to pursue a formal education (the target group) were contrasted to other learners (the comparison group) in terms of demographics, motivations, course enrollment, engagement and performance. Learners in the target group were primarily male and over 25 years old. A statistically significant portion of the target group held less than a 4-year college degree than the comparison group. Target learners were also significantly underrepresented in the enrollment of the courses examined here. Although the comparison group had a significantly higher completion rate overall than the target group, the target group had a statistically significant higher rate of completing courses with certificates of distinction. This article provides a discussion of these results and suggests how MOOCs could be adapted to better address the needs of learners who feel financially unable to pursue a more traditional path to a post-secondary education. </p>
Astronomy for astronomical numbers: A worldwide massive open online class
Authors: Impey Chris D. , Wenger Matthew C. , Austin Carmen L. 
Published: September 2016

<p>Astronomy: State of the Art is a massive, open, online class (MOOC) offered through Udemy by an instructional team at the University of Arizona. With nearly 24,000 enrolled as of early 2015, it is the largest astronomy MOOC available. The astronomical numbers enrolled do not translate into a similar level of engagement. The content consists of 14 hours of video lecture, nearly 1,000 Powerpoint slides, 250 pages of background readings, and 20 podcast interviews with leading researchers. Perhaps in part because of the large amount of course content, the overall completion rate is low, about 3%. However, this number was four times higher for an early cohort of learners who were selected to have a prior interest in astronomy and who took the class in synchronous mode, with new content being added every week. Completion correlates with engagement as measured by posts to the online discussion board. For a subset of learners, social media like Facebook and Twitter provide an additional, important mode of engagement. For the asynchronous learners who have continuously enrolled for the past 15 months, those who complete the course do so quickly, with few persisting longer than two months. The availability of a free completion certificate had no impact of completion rates when it was added midway through the period of data analyzed in this paper. This experiment informs a new offering of an enhanced version of this MOOC via Coursera, along with a co-convened “flipped” introductory astronomy class at the University of Arizona, where the video lectures will be online and class time will be used exclusively for small group labs and hands-on activities. Despite their typically low completion rates, MOOCs have the potential to add significantly to public engagement with science, and they attract a worldwide audience. </p>
The use of a mobile learning management system at an online university and its effect on learning satisfaction and achievement
Authors: Shin Won Sug , Kang Minseok 
Published: September 2016

<p align="left"> </p><p>This study investigates online students’ acceptance of mobile learning and its influence on learning achievement using an information system success and extended technology acceptance model (TAM). Structural equation modeling was used to test the structure of individual, social, and systemic factors influencing mobile learning’s acceptance, and how said acceptance influences learning satisfaction and achievement. Unlike earlier TAM-related research that did not provide a broad view of technological acceptance and its impact on learning activities, the present study’s results highlight the relationship between behavioral intention/learning satisfaction and learning achievement. Additionally, this study tests the theoretical model of successful mobile learning by empirically accepting mobile learning management systems. The findings further imply that students at online universities have started to accept mobile technology as a new learning tool; consequently, its acceptance has influenced their learning achievement both directly and indirectly. These discoveries should facilitate a better understanding of students’ usage of mobile learning systems in higher education, and provide timely guidance for its development and implementation.</p>
Exploring intensive longitudinal measures of student engagement in blended learning
Authors: Henrie Curtis R , Bodily Robert , Manwaring Kristine C , Graham Charles R 
Published: September 2016

<p>In this exploratory study we used an intensive longitudinal approach to measure student engagement in a blended educational technology course, collecting both self-report and observational data. The self-report measure included a simple survey of Likert-scale and open-ended questions given repeatedly during the semester. Observational data were student activity data extracted from the learning management system. We explored how engagement varied over time, both at the course level and between students, to identify patterns and influences of student engagement in a blended course. We found that clarity of instruction and relevance of activities influenced student satisfaction more than the medium of instruction. Student engagement patterns observed in the log data revealed that exploring learning tools and previewing upcoming assignments and learning activities can be useful indicators of a successful learning experience. Future work will investigate these findings on a larger scale.</p>
Exploring new learning paradigms in ODL: A reflection on the paper of Barber, Donnelly and Rizvi (2013): “An avalanche is coming: Higher education and the revolution ahead”.
Authors: Brown Tom H 
Published: September 2016

<p class="Paragraph1"><span lang="EN-US">The paper of Barber, Donnelly &amp; Rizvi (2013): “An avalanche is coming: Higher education and the revolution ahead” addresses some significant issues in higher education and poses some challenging questions to ODL (Open and Distance Learning) administrators, policy makers and of course to ODL faculty in general. Barber et al.’s paper does not specifically address the area of teaching and learning theories, strategies and methodologies per se. In this paper I would therefore like to reflect on the impact that the contemporary changes and challenges that Barber et al. describes, have on teaching and learning approaches and paradigms. In doing so I draw on earlier work about future learning paradigms and navigationism (Brown, 2006). We need a fresh approach and new skills to survive the revolution ahead. We need to rethink our teaching and learning strategies to be able to provide meaningful learning opportunities in the future that lies ahead.</span></p>
Exploring the Roles of Social Participation in Mobile Social Media Learning: A Social Network Analysis
Authors: Norman Helmi , Nordin Norazah , Din Rosseni , Ally Mohamad , Dogan Huseyin 
Published: September 2016

<p class="BODYTEXT">Social media is increasingly becoming an essential platform for social connectivity in our daily lives. The availability of mobile technology has further fueled its importance – making it a ubiquitous tool for social interaction. An emerging mode of learning is the mobile social media learning where social media is used in the mobile learning mode. However, limited studies have been conducted to investigate roles of social participation in this field. Thus, the study investigates roles of social participation in mobile social media learning using the “ladder of participation and mastering”. Participants were students taking an educational technology course in a local university. The study was conducted in a four-month period. Data was collected from discussions while learning among the students using one of the mobile social media platforms, Facebook groups. The data was analyzed using a social network analysis tool, NodeXL. Data was analyzed based on egocentric networks, betweeness centrality, and closeness centrality. The findings revealed that there are four roles of social participation in mobile social media, which are: (i) lurkers; (ii) gradually mastering members/passive members; (iii) recognized members; and (iv) coaches. The findings also indicated that over the course of four months, learners can inter-change roles of social participation – becoming more central or less central in learning discussions. As a result, a <em>roles of social participation</em> scale for mobile social media learning is proposed. Future research could be conducted in other fields to investigate whether mobile social media could be used to promote learning. </p>
Student Enrollment and Dropout: An Evaluation Study of Diploma in Computer Science and Application Program at Bangladesh Open University
Authors: Rashid Mohammad Mamunur , Jahan Monira , Islam Md. Anwarul , Ratna Meherin Munjarin 
Published: September 2016

<h2><span style="font-size: x-large;">Abstract</span><span style="font-size: x-large;">: </span></h2><p><span style="font-family: Times New Roman;"><span style="font-size: medium;">The aim of this study is to investigate the present status of DCSA program focusing on student enrollment, dropout and completion trends. </span><span style="font-size: medium;"> </span><span style="font-size: medium;">The study tries to explore the factors that attract or pull students to enroll in the program and push them to dropout from the program. Secondary data analysis and interview are used to generate data. Quantitative analysis for the secondary data is used to explore students’ enrollment, dropout and completion trends. Qualitative approach is used to analyze the information generated from key participants’ interviews. The findings of the study reveal that students’ enrollment and completion trends are not at satisfactory level. The push factors identified from the study are mostly extrinsic or institution related. The factors that need to improve are current instructional strategy, timely delivery of learning materials and provide course related information, strengthen the activities of Regional Resource Centers (RRC) and Sub Regional Resource Centers (SRRC). The findings have some policy implications implying that the policy makers of BOU should take into account to improve </span><span style="font-size: medium;">the quality of DCSA program offered by BOU through the delivery mode of ODL.</span></span></p><p> </p>
How factors of personal attitudes and learning environments affect gender difference toward mobile learning acceptance
Authors: Liaw Shu-Sheng , Huang Hsiu-Mei 
Published: September 2016

<p>Mobile technology for learning empowers the shift from traditionally pure instructor-centered classroom teaching to fully learner-centered educational settings. Although mobile learning (m-learning) accessing Internet resources anytime and anywhere, the issue of the relationship between gender perspectives and m-learning environments has been a controversial topic. Therefore, the main research objective of the research is to explore gender differences toward APP-based m-learning environments. Subjects of the study were selected university students who had already used an APP-based m-learning system for one month. A total of one hundred fifty nine valid questionnaires were collected, spilt evenly between female and male students. The statistical analyses lead to significant conclusions. Both female and male learners have highly positive perceptions toward m-learning. Additionally, the proposed research model is an acceptable conceptual model for investigating female and male learners’ attitudes. Furthermore, factors of personal attitudes and learning environments affect gender difference toward m-learning acceptance. </p>
Design Considerations for Integrating Twitter into an Online Course
Authors: Rohr Linda Elizabeth , Costello Jane , Hawkins Thomas 
Published: September 2016

<p>While the use of Twitter for communication and assessment activities in online courses is not new, it has not been without its challenges. This is increasingly true of high enrolment courses. The use of a Twitter Evaluation application which leverages a Learning Management System’s (LMS’s) application programming interface (API) provides a solution which reduces the administrative overhead associated with tracking students’ Tweets and allows the grader to focus on the assessment of the Tweets’ quality. Such an application and how it improved the assessment process of grading Tweet events is described. In addition to the technological considerations, the soundness of the Twitter learning design in the course impacts the effectiveness of the Tweet events for learning and enhancing the much needed online social presence. Learning design considerations are also discussed. </p>
Perbanyakan Lisianthus [Eustoma grandiflorum (Raf.)] Shinn Secara In Vitro Menggunakan Kuncup Bunga sebagai Sumber Eksplan
Authors: Shintiavira Herni , Winarto Budi 
Published: September 2016

Lisianthus [Eustoma grandiflorum (Raf.)] Shinn merupakan tanaman hias bernilai ekonomi tinggi. Pengembangan jenis tanaman ini terkendala oleh keterbatasan benih bermutu. Penyediaan benih bermutu melalui pemanfaatan kuncup bunga pada kultur in vitro lisianthus dilakukan dalam penelitian. Penelitian bertujuan mendapatkan teknologi perbanyakan lisianthus menggunakan kuncup bunga. Penelitian dilaksanakan di Laboratorium Kultur Jaringan, Balai Penelitian Tanaman Hias Segunung pada Januari hingga Desember 2013. Penelitian ini menggunakan E. grandiflorum klon 05 NK-70 dengan sumber eksplan kelopak bunga, mahkota, kepala sari, ovarium, dan penyangga bunga. Penelitian terdiri atas empat percobaan, yaitu Percobaan 1, eksplan diinisiasi pada media Murashige &amp; Skoog (MS), MS +0,2 mg/l benzylaminopurin (BAP) + 0,02 mg/l asam naftalen asetat (NAA), MS+0,5 mg/l BAP + 1,5 mg/l thidiazuron (TDZ) dan MS+0,25 mg/l BAP. Percobaan 2, tunas hasil inisiasi diperbanyak pada media MS dan MS + 0,2 mg/ l BAP +0,02 mg/l NAA. Percobaan 3, pencegahan roset pada planlet dengan aplikasi media MS + 0,1–10 mg/l asam giberelin (GA3). Percobaan 4, induksi perakaran menggunakan media MS + 0,1–0,5 mg/l asam asetat-3-indol (IAA) tanpa atau ditambah 1 g/l arang aktif. Percobaan disusun menggunakan rancangan acak lengkap (RAL) 3–4 ulangan. Hasil penelitian ini menunjukkan bahwa penyangga bunga merupakan eksplan paling responsif dalam inisiasi tunas dan perbanyakan tunas pada media MS + 0,2 mg/l BAP + 0,02 mg/l NAA. Sementara media MS +7 mg/l GA3 sesuai untuk mencegah roset dan media MS +0,5 mg/l IAA + 1 g/l arang aktif sesuai untuk pengakaran tunas. Planlet diaklimatisasi menggunakan campuran arang sekam dan cocopeat dengan tingkat keberhasilan mencapai 80–100%.
Análise paramétrica do deslocamento de óleo em um meio poroso governado pela teoria de Buckley-Leverett
Authors: De Oliveira Camylla Moreira , Cordeiro Daniel Cardoso , Romero Oldrich Joel 
Published: September 2016

Um dos problemas mais clássicos no escoamento de fluidos em meios porosos para a indústria do petróleo é o modelo de Buckley-Leverett, que consiste num fluxo unidimensional e bifásico em que ocorre a injeção de um determinado fluido - comumente a água - e a produção de óleo. Tal modelo físico-matemático é não-linear e sua solução analítica depende de simplificações que geram aproximações do resultado real com grande percentual de erro associado. Para contornar tal situação, utiliza-se de métodos numéricos para obter soluções mais próximas à realidade. O presente trabalho visa simular tal problema de fluxo bifásico e analisar as alterações ocorridas na recuperação de óleo provocadas pelas mudanças das diversas variáveis de entrada, como por exemplo a porosidade, o número de blocos da malha, a viscosidade do óleo, entre outros. Para realizar tal modelagem, utilizou-se o software UTCHEM, capaz de simular o fluxo com comportamento de múltiplas fases (água, óleo, gás e microemulsão), transformações físicas e químicas, e propriedades de meios porosos. Em geral, os resultados mostraram alterações na produção acumulada de óleo mediante às mudanças das propriedades dos fluidos e da formação modelada que foram compatíveis com os modelos analíticos e numéricos propostos.