bluuebunny/crossref_metadata_2025_split huggingface dataset:
Análisis de una comunidad on-line a partir de su lista de discusión
Authors: Ralló Robert , Gisbert Mercè 
Published: May 2020

En este artículo se presenta una metodología para el análisis y caracterización de comunidades online a partir de los mensajes intercambiados en una lista de discusión. Mediante técnicas de análisis basadas en redes sociales se detecta la estructura, relaciones y el papel que juegan los diferentes miembros de la comunidad. La metodología propuesta se evalúa usando los mensajes procesados por la lista de discusión EDUTEC-L durante el periodo 1998-2004.AbstractThe current work introduces a methodology for the analysis and characterization of on-line communities through the messages exchanged in a discussion list. The structure, relationships and user roles in the community are inferred using social network analysis techniques. The proposed methodology is assessed using the messages processed by the EDUTEC-L discussion list during the period 1998-2004.
Satélites, cables, redes un nuevo panorama para la producción de Televisión Educativa Reedición del nº 0
Authors: Salinas Ibáñez Jesús 
Published: May 2020

Se presenta el trabajo que constituyó el número 0 de Edutec-e Revista electrónica de Tecnología Educativa. En el artículo Satélites, cable, redes: Un nuevo panorama para la producción de televisión educativa se plasmaba la posición de la Asociación de Usuarios Españoles de Satélites para la Educación (EEOS) respecto a los temas candentes de la Tecnología Educativa en aquel momento. AbstractThis work constituted number 0 of Edutec-e electronic Review of Educational Technology. In the article Satellites, cable, networks: A new view for the production of educatiional television shaped the position of the Association of Spanish Users of Satellites for Education (EEOS) with respect to the main subjects of the Educational Technology at that moment.
Las universidades apostando por las tic: modelos y paradojas de cambio institucional
Authors: Castañeda Quintero Linda J. 
Published: May 2020

Dados los tiempos que corren en todos los ámbitos de nuestro contexto social, económico, cultural y por supuesto tecnológico, la universidad vive un momento en el que debe apostar por innovaciones en la dirección de adaptarse a los cambios y dar respuesta a las necesidades del entorno; siempre en aras de sobrevivir como institución y seguir siendo referente primario de nuestra sociedad. El problema es que debe cambiar, pero sin que antes se hayan clarificados conceptos básicos que le dan su razón de ser y la fundamentan.En este trabajo pretendemos abundar en los modelos más representativos de cambio institucional que se han adoptado en la implementación de TIC en la universidad, para posteriormente hacer una reflexión acerca de cómo esos modelos y la forma que han adoptado en la práctica han creado no pocas paradojas relacionadas con las necesidades de cambio, las formas que adopta dicho cambio y el futuro que puede tener. AbstractFast expansion of ICT in every side of our society has increased the pressure in traditional higher education institutions to become modern organizations, and has modified the social perception about the need of using new possibilities and models of teaching and learning including ICT (Technology Enhanced Learning). Unfortunately, the general awareness is universities know very well they have to change but they don’t know in which direction they have to do it. Therefore, they have to clarify basic concepts about their reason for being and their basic principles.On this work we will present a first analysis of the most representative models to implement ICT in Universities that institutions around the world have used. From this models and analysing trends around them, we propose some reflexions about how practices have created many paradoxes around the change related to ICT and higher education: how this change could be, how this change already is, and how can we plan better the future of these changes.
Una plataforma para gestión de clases virtuales interactivas
Authors: Ramos Gutiérrez Santiago Jesús , De la Osa Resina Juan Francisco , De Toro Negro Francisco Jesús 
Published: May 2020

Este trabajo presenta GESCLAV, una plataforma para la gestión de clases virtuales a través de Internet con un alto grado de interactividad profesor-alumno. GESCLAV gestiona la intercomunicación entre profesor y alumno por medio de video, audio y mensajería instantánea, simulando el entorno de un aula real, y permitiendo a alumnos y profesor interaccionar para la formulación y resolución de cuestiones respectivamente. Además, GESCLAV ofrece otros servicios offline tales como gestión de asignaturas, gestión de alumnado y videoteca de clases.AbstractThis work presents GESCLAV, a technological platform for virtual classes’ management in Internetwith a high degree of interactivity professor-student.GESCLAV handles communication between student and professor by using video, audio and instant messaging solutions simulating a real classroom conditions and enabling real time interaction between students and professor for making and solving questions respectively.Besides, GESCLAV offers classical offline virtual teaching services such as subjects and student management and old classes’ repository.
Una herramienta didáctica para la enseñanza de la teoría de juegos mediante Internet
Authors: Pascual José A. , Galán José M. , Izquierdo Luis R. , Santos José I. , Izquierdo Segismundo S. , González Tapia Javier 
Published: May 2020

Este trabajo presenta una herramienta didáctica diseñada para facilitar la realización de prácticas participativas con alumnos vía Internet. La herramienta se centra en el aprendizaje de conceptos y problemas propios de las interacciones sociales. El programa desarrollado se ofrece gratuitamente a la comunidad académica en la direcciónhttp://www.insisoc.org/tragedia_de_los_comunes.html. El artículo describe el programa informático y discute la utilidad de este tipo de herramientas participativas para la enseñanza, y en particular para el estudio de situaciones en las que los resultados para un individuo (alumno) dependen no sólo de sus decisiones, sino también de las decisiones del resto de individuos con los que interactúa.AbstractThis paper presents a computer program designed to conduct classroom experiments through the Internet. The program is aimed to facilitate the teaching of several concepts and issues that are characteristic of various social interactions.The computer program is freely available at http://www.insisoc.org/tragedia_de_los_comunes.html.The paper describes the computer program and discusses the usefulness of this kind of participative tools for learning, focusing particularly on those cases in which the results for a player (student) depend not only on their own decisions, but also on the decisions of the other students.
Definición y estimación de tipos y niveles de uso tecnológico: una aproximación a partir de estudiantes de recién ingreso a la universidad
Authors: Henríquez-Ritchie Patricio , Organista-Sandoval Javier 
Published: May 2020

La investigación expuesta a continuación tuvo como objetivo principal definir y estimar los tipos y niveles de uso tecnológico en estudiantes que ingresan al nivel educativo superior y analizar su eventual relación con otras variables (personales, socioeconómicas, capacitación tecnológica previa, académicas). Se sitúa en la Facultad de Ciencias Administrativas y Sociales (FCAyS) de la Universidad Autónoma de Baja California (UABC), incluyendo a una parte de los estudiantes que ingresaron el primer semestre de 2008 (2008-1) en sus diferentes troncos comunes y licenciaturas. Los resultados evidencian que los principales tipos de tecnología computacional que los estudiantes utilizan más frecuente y hábilmente no coinciden necesariamente con aquellos programas/medios que consideran más importantes como apoyo en el marco de sus estudios. A su vez, los niveles de uso de la tecnología computacional se pueden definir a partir de la cantidad y calidad de uso del PC de los estudiantes y dichos niveles se muestran asociados a ciertas variables como género, edad, posesión de PC e Internet en el hogar y capacitación tecnológica previa. AbstractThe principal goal of the investigation exposed to continuation was to define and to measure the types and levels of technological use in students of recently entry to the university and analyzing the eventual relation with other variables (personal, socioeconomic, technological previous training, academic). Situate in the Faculty of Administrative and Social Sciences (FCAyS) of the Autonomous University of Baja California (UABC), including to a part of the students that entry in the first semester of the 2008 (2008-1) in his different licentiates. The results demonstrate that the principal types of technology that the students use more frequent and skillfully they do not coincide necessarily with those programs/means that they consider to be more important as support in the frame of their studies. In turn, the levels of technology use can be defined from the quantity and quality of use of the PC of the students and the above mentioned levels they prove to be partners to certain variables as genre, age, possession of PC and Internet in home and technological previous training.
Creación de un entorno personal para el aprendizaje: desarrollo de una experiencia
Authors: Cabero Almenara Julio , Marín Díaz Verónica , Infante Alfonso 
Published: May 2020

El presente artículo mostramos el entorno personal de aprendizaje creado para la formación tecnológica de los docentes universitarios que la implantación del espacio europeo de educación superior demanda, como resultado inicial del proyecto de investigación denominado Diseño, producción y evaluación de un entorno de aprendizaje 2.0 para la capacitación del profesorado universitario en la utilización educativa de las Tecnologías de la Información y Comunicación” (Dipro 2.0-EDU2009-08893), concedido por el Ministerio de Ciencia e Innovación.Creating a personal environment for learning: development of an experienceAbstractThis article shows the personal learning environment created for technology training of university teachers that the implementation of the European higher education demands, as initial results of the research project entitled “Design, production and evaluation of a learning environment 2.0 for training of university teachers in the educational use of Information Technology and Communication" (Dipro 2.0-EDU2009-08893), awarded by the Ministry of Science and Innovation.
Los itinerarios de aprendizaje mediante mapas conceptuales como recurso para la representación del conocimiento
Authors: De Benito Crossetti Bárbara , Darder Mesquida Antònia , Salinas Ibáñez Jesús 
Published: May 2020

Nuestra idea es que los mapas conceptuales pueden utilizarse como organizadores de la secuencia del aprendizaje en forma de lo que denominamos itinerarios de aprendizaje (Salinas, de Benito y Darder, 2011). En este estudio, se diseñó y validó por un grupo de expertos, un itinerario de aprendizaje basado en mapas conceptuales para el estudio de un módulo de contenidos de la asignatura Tecnología Educativa II, para presentarlo posteriormente a dos grupos de alumnos con el fin de obtener resultados sobre su implementación, metodología, la organización acorde con los postulados del aprendizaje significativo, los cambios que puede provocar dicha organización, la flexibilidad que ofrecen al proceso de aprendizaje y el logro de las competencias propuestas.Learning path by using concept maps as a resource for knowledge representationAbstract Our idea is that concept maps can be used as organizers of the sequence of learning in the form of what we call learning paths. In this study, a learning path based on concept maps was designed and validated by an expert group, to study a module of the course content Educational Technology II. This route was presented to two groups of students to get results on: 1) Their implementation and the methodology. 2) The organization consistent with the principles of meaningful learning. 3) Changes that the organization can prompt. 4) The available to flexibility the learning process. 5) The achievement of the competencies proposed.
Creación de periódicos en línea con paper.li como recurso didáctico para el aprendizaje de lenguas
Authors: Araujo Portugal Juan Carlos 
Published: May 2020

La Web 2.0 cuenta con una serie de herramientas que se pueden utilizar como recursos didácticos. Una de ellas es Paper.li que permite la creación de periódicos en línea que sirven para desarrollar la comprensión de lectura en formato digital, así como la expresión escrita, todo ello teniendo una audiencia real, lo que dota de mayor autenticidad y significado a las actividades que se propongan a los alumnos en las que se utilice esta herramienta.
Synthesis of composite sorbent for the treatment of aqueous solutions contaminated with methylene blue dye
Authors: Al Juboury Maad F. , Alshammari Musa H. , Al-Juhaishi Mohammed R. , Naji Laith A. , Faisal Ayad A. H. , Naushad Mu. , Lima Eder C. 
Published: May 2020

Abstract
To apply the principles of sustainability, this study aims to prepare the composite sorbent from mixing of solid wastes that resulted from activities of treatment plants for wastewater and water supply. The manufacturing process depends on the mixing of sewage sludge with waterworks sludge at different proportions and the best mixture is modified by ferric nitrate solution. The prepared composite sorbent was evaluated as permeable reactive barrier (PRB) in the capturing of methylene blue (MB) dye presented in the simulated groundwater. Results proved that the suitable mixture of composite sorbent consisting of 0.25 g sewage sludge with 0.75 g waterworks sludge coated with aqueous solution of 2 g of Fe(NO3)2 achieved the maximum sorption capacity. In comparison with Freundlich model, Langmuir expression described the sorption measurements in a well manner; so, the chemisorption is governed by the removal of MB with maximum adsorption capacity reached to 268.98 mg/g. Kinetic measurements could be more representative by pseudo-first-order model and this means that the sorption process is supported by physical forces. Finally, the effects of inlet concentrations and bed thickness on the migration of MB front were simulated in an efficient manner by COMSOL Multiphysics 3.5a package with root mean squared errors not in excess of 0.152.
Comparative Studies on Phospholipase A2 as a Marker for Gut Microbiota- liver-brain Axis in a rodent Model of Autism
Authors: Al-Dbass Abeer , Bacha Abir Ben , Moubayed Nadine M.S. , Bhat Ramesa Shafi , Al-Mutairi Manar , Alnakhli Osima M. , Al-Mrshoud Majidh , Alfawaz Hanan , Daghestani Maha , El-Ansary Afaf 
Published: May 2020

Background:Lipid homeostasis and gut flora can be related to many metabolic diseases, especially autism. Lipid metabolism in the brain can control neuronal structure and function and can also take part in signal transduction pathways to control metabolism in peripheral tissues, especially in the liver. Impaired phospholipid metabolism promotes oxidative stress and neuroinflammation and is, therefore, directly related to autism.Objective:The effect of propionic acid (PPA) toxicity on lipid homeostasis in the gut-liver-brain axis was evaluated to understand their inter-connection. Cytosolic phospholipase A2 (cPLA2) concentration and activity was measured in autistic model and protective role of omega-3 (ω-3) and vitamin B12 was evaluated.Methods:Animals were divided into five groups: Group I (control group); Group II (autistic model treated with neurotoxic dose of PPA); Group III (treated with vitamin B12 (16.7 mg/kg/day) for 30 days post PPA treatment); Group IV (treated with ω-3 (200 mg/kg body weight/day) for 30 days post PPA treatment; Group V (combined dose of ω-3 and Vitamin B12, for 30 days post PPA treatment). Phospholipase A2 activity and protein expression level in the liver homogenate of all the groups was analyzed by western blotting and was compared to brain cPLA2.Results:PPA increased the levels of liver and brain cPLA2. However, independent or combined treatment with ω-3 and vitamin B12 was effective in neutralizing its effect. Moreover, PPA-induced dysbiosis, which was ameliorated with the above treatments.Conclusions:This study showed the role of cPLA2 as a lipid metabolism marker, related to PPA-induced inflammation through a highly interactive gut-liver-brain axis.
Synthesis and Anticancer Activity of Thiadiazole Containing Thiourea, Benzothiazole and Imidazo[2,1-b][1,3,4]thiadiazole Scaffolds
Authors: Avvaru Stephen P. , Noolvi Malleshappa N. , More Uttam A. , Chakraborty Sudipta , Dash Ashutosh , Aminabhavi Tejraj M. , Narayan Kumar P. , Sutariya Vishnu 
Published: May 2020

Background:
A great array of nitrogen-containing heterocyclic rings were being extensively explored for their functional
versatility in the field of medicine especially in anticancer research. 1,3,4-thiadiazole is one of such heterocyclic ring with promising
anticancer activity against several cancer cell lines, inhibiting diverse biological targets.

Introduction:
The 1,3,4-thiadiazole, when equipped with other heterocyclic scaffolds, has displayed enhanced anticancer properties. The
thiourea, benzothiazole, imidazo[2,1,b][1,3,4]-thiadiazoles are such potential scaffolds with promising anticancer activity.

Method:
A new series of 5-substituted-1,3,4-thiadiazoles linked with phenyl thiourea, benzothiazole and 2,6-disubstituted imidazo[2,1-
b][1,3,4]thiadiazole derivatives were synthesized and tested for in-vitro anticancer activity on various cancer cell lines.

Results:
The National Cancer Institute’s preliminary anticancer screening results showed compounds 4b and 5b having potent antileukemic
activity. Compound 4b selectively showed 32 percent lethality on Human Leukemia-60 cell line. The docking studies of the derivatives on
aromatase enzyme (Protein Data Bank: 3S7S) have shown reversible interactions at the active site with good docking scores comparable to
Letrozole and Exemestane. Further, the selected derivatives were tested for anticancer activity on HeLa cell line based on the molecular
docking studies.

Conclusion:
Compound 4b and 5b showed effective inhibition equivalent to Letrozole. These preliminary biological screening studies have
given positive anticancer activity for these new classes of derivatives. An additional research study like the mechanism of action of the
anticancer activity of this new class of compounds is necessary. These groundwork studies illuminate a future pathway for research of this
class of compounds enabling the discovery of potent antitumor agents.
Voltammetric Methods Used in the Determination of Nucleoside Reverse Transcriptase Inhibitors
Authors: Ağın Fatma , Doğan İnci Selin 
Published: May 2020

Background:
The Human Immunodeficiency Virus (HIV) has now been established as the
causative agent of the Acquired Immunodeficiency Syndrome (AIDS) and exactly 25 antiretroviral
drugs have been formally approved for clinical use in the treatment of AIDS. The life quality and duration
of HIV-positive patients have increased with the usage of antiretroviral drugs in the treatment of
AIDS. Nucleoside Reverse Transcriptase Inhibitors (NRTIs) are one of the subgroups of antiretroviral.

Objective:
The quantification of drugs is important, as they make positive contributions to dose adjustments
in practice. Voltammetric methods are very powerful analytical methods used in the pharmaceutical
industry because of the determination of therapeutic agents and/or their metabolites in clinical
samples at extremely low concentrations (10-50 ng/ml).

Methods:
This review mainly includes the pharmacological properties and recent determination studies
by voltammetric methods from pharmaceutical dosage forms and biological samples of eight NRTIs
group antiretroviral drugs (zidovudine, abacavir, adefovir, entecavir, zalcitabine, didanosine, emtricitabine,
lamivudine) that are used in the clinic and show electroactive properties, were performed.

Conclusion:
Due to the variety of working electrodes in voltammetric methods, it is possible to choose
the electrode that best responds. In this way, the analysis of NRTIs was possible at lower concentrations
in pharmaceuticals and biological samples with voltammetric methods in these studies without
the necessity for the sample pre-treatment or time-consuming extraction steps. The voltammetric methods
provide good stability, repeatability, reproducibility and high recovery for the analysis of the analyte.
They could be used for the pharmacokinetic studies as well as for quality control laboratory studies.
Tracking Social Media Discourse About the COVID-19 Pandemic: Development of a Public Coronavirus Twitter Data Set
Authors: Chen Emily , Lerman Kristina , Ferrara Emilio 
Published: May 2020

BackgroundAt the time of this writing, the coronavirus disease (COVID-19) pandemic outbreak has already put tremendous strain on many countries' citizens, resources, and economies around the world. Social distancing measures, travel bans, self-quarantines, and business closures are changing the very fabric of societies worldwide. With people forced out of public spaces, much of the conversation about these phenomena now occurs online on social media platforms like Twitter.ObjectiveIn this paper, we describe a multilingual COVID-19 Twitter data set that we are making available to the research community via our COVID-19-TweetIDs GitHub repository.MethodsWe started this ongoing data collection on January 28, 2020, leveraging Twitter’s streaming application programming interface (API) and Tweepy to follow certain keywords and accounts that were trending at the time data collection began. We used Twitter’s search API to query for past tweets, resulting in the earliest tweets in our collection dating back to January 21, 2020.ResultsSince the inception of our collection, we have actively maintained and updated our GitHub repository on a weekly basis. We have published over 123 million tweets, with over 60% of the tweets in English. This paper also presents basic statistics that show that Twitter activity responds and reacts to COVID-19-related events.ConclusionsIt is our hope that our contribution will enable the study of online conversation dynamics in the context of a planetary-scale epidemic outbreak of unprecedented proportions and implications. This data set could also help track COVID-19-related misinformation and unverified rumors or enable the understanding of fear and panic—and undoubtedly more.