Assessment of collaborative learning experiences by graphical analysis of wiki contributions     

Manuel Palomo-Duarte  Juan Manuel Dodero  Inmaculada Medina-Bulo  Emilio J. Rodríguez-Posada  Iván Ruiz-Rube 《Interactive Learning Environments》2013,21(4):444-466

The widespread adoption of computers and Internet in our life has reached the classrooms, where computer-supported collaborative learning (CSCL) based on wikis offers new ways of collaboration and encourages student participation. When the number of contributions from students increases, traditional assessment procedures of e-learning settings suffer from scalability problems. In a wiki-based learning experience, automatic tools are required to support the assessment of such huge amounts of data. In this work, we present StatMediaWiki, a tool that collects and aggregates information that helps to analyze a MediaWiki installation. It generates charts, tables and different statistics enabling easy analysis of wiki evolution. We have used StatMediaWiki in a Higher Education course and present the results obtained in this case study.  相似文献   

Bilingualism & Biliteracy: Issues of Equity,Access, & Social Justice for English Language Learners: Introduction to This Special Issue     

James L. Rodríguez  Karen Cadiero-Kaplan 《Equity & Excellence in Education》2013,46(3):275-278

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Sobre la didáctica del texto expositivo. Algunas propuestas para la clase de lengua     

Ana Martínez  Carmen Rodríguez 《Cultura y Educación》2013,25(3-4):77-87

La omnipresencia del texto expositivo en el ámbito escolar, tanto en el discurso del profesor como en el de los alumnos, constituye una razón importante para que pase a ser objeto de enseñanza y aprendizaje en la clase de lengua, no como información «sobre» la exposición ni como simple adiestramiento práctico, sino como trabajo de análisis y producción de textos. Ante las frecuentes quejas sobre la pobreza de vocabulario de los alumnos, la falta de orden en la expresión de sus ideas y, en general, sobre su poca destreza en la exposición oral y escrita, conviene señalar que estas habilidades que echamos de menos en nuestros alumnos se pueden enseñar y, si no se enseñan, no debe extrañarnos que no se aprendan. Las autoras de este trabajo pretenden llamar la atención sobre la importacia y las posibilidades del texto expositivo para la clase de lengua en la enseñanza secundaria.  相似文献   

Herramientas de autor para el desarrollo de software educativo     

José Luis Rodríguez 《Cultura y Educación》2013,25(13):111-124

La gran muralla del ordenador para los educadores ha sido que imponía el juego que Goethe achacaba a los matemáticos: lo traducen todo a su idioma y ya se trata de algo distinto inasequible para la generalidad de los mortales. La informática separaba a los educadores de la informática. Los lenguajes «de autor» que traducen las posibilidades del ordenador a pautas de acción expresadas en códigos sencillos y naturales y que sirven para producir cursos, lecciones o didácticas fácilmente, permiten por primera vez que el educador pase a ser protagonista y no el anfitrión de una visita inoportuna, del papel del ordenador en educación.  相似文献   

Validating chemical and structural changes in painting materials by principal component analysis of spectroscopic data using internal mineral standards     

Julia Romero-Pastor  Carolina Cardell  África Yebra-Rodríguez  Alejandro B. Rodríguez-Navarro 《Journal of Cultural Heritage》2013,14(6):509-514

This work shows the capability of principal component analysis (PCA) to detect molecular, chemical and mineralogical changes in historic painting materials subjected to a thermal ageing test (< 250 °C). To simulate the heat-induced alterations an ageing accelerated process was performed on two sets of samples containing two mineral phases (hydroxyapatite and quartz) and two organic compounds (collagen and albumin). The chosen minerals behaved as internal standards during the tests since they are stable and chemically inert at the tested temperatures. Raman microscopy (RM) was applied to characterise one set of samples made of bone, containing ca. 70% hydroxyapatite and 30% collagen. Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy was used to study the other set of samples made of four different quartz/albumin mixtures with quartz contents of 30%, 50%, 70% and 90% (w/w). The aim was to identify the ideal proportion of internal standard to be validated by ATR-FTIR and PCA, determined to be 70%. PCA analyses detected changes in the molecular structures of the organic components while the internal mineral standard remained stable. Moreover, the internal standard IR/Raman bands were constant during the tests and confirmed that the results of PCA analyses were independent of instrumental and technical factors, as well as sample collecting and handling. This demonstrates the potential benefits of our approach to study historical painting materials, which have suffered any type of heat-induced alteration.  相似文献   

Toward a Longitudinal Model of e-Commerce: Environmental,Technological, and Organizational Drivers of B2C Adoption     

Inma Rodríguez-Ardura  Antoni Meseguer-Artola 《The Information Society》2013,29(3):209-227

Despite the important benefits for firms of commercial initiatives on the Internet, e-commerce is still an emerging distribution channel, even in developed countries. Thus, more needs to be known about the mechanisms affecting its development. A large number of works have studied firms' e-commerce adoption from technological, intraorganizational, institutional, or other specific perspectives, but there is a need for adequately tested integrative frameworks. Hence, this work proposes and tests a model of firms' business-to-consumer (called B2C) e-commerce adoption that is founded on a holistic vision of the phenomenon. With this integrative approach, the authors analyze the joint influence of environmental, technological, and organizational factors; moreover, they evaluate this effect over time. Using various representative Spanish data sets covering the period 1996–2005, the findings demonstrate the suitability of the holistic framework. Likewise, some lessons are learned from the analysis of the key building blocks. In particular, the current study provides evidence for the debate about the effect of competitive pressure, since the findings show that competitive pressure disincentivizes e-commerce adoption in the long term. The results also show that the development or enrichment of the consumers' consumption patterns, the technological readiness of the market forces, the firm's global scope, and its competences in innovation continuously favor e-commerce adoption.  相似文献   

Intermittent hypoxia exposure in a hypobaric chamber and erythropoietin abuse interpretation     

Rosario Abellan  Rosa Ventura  Angel F. Remacha  Ferran A. Rodríguez  José A. Pascual 《Journal of sports sciences》2013,31(11):1241-1250

Abstract

The aim of this study was to assess the effect of intermittent hypoxia exposure on direct and indirect methods used to evaluate recombinant human erythropoietin (rhEPO) misuse. Sixteen male triathletes were randomly assigned to either the intermittent hypoxia exposure group (experimental group) or the control normoxic group (control group). The members of the experimental group were exposed to simulated altitude (from 4000 to 5500 m) in a hypobaric chamber for 3 h per day, 5 days a week, for 4 weeks. Blood and urine samples were collected before and after the first and the final exposures, and again 2 weeks after the final exposure. While serum EPO significantly increased after the first [from a mean 8.3 IU · l^?1 (s = 3.2) to 16.6 IU · l^?1 (s = 4.7)] and final exposures [from 4.6 IU · l^?1 (s = 1.4) to 24.8 IU · l^?1 (s = 9.3)], haemoglobin, percentage of reticulocytes, and soluble transferrin receptor were not elevated. Second-generation ON/OFF models (indirect rhEPO misuse detection) were insensitive to intermittent hypoxia exposure. The distribution of the urinary EPO isoelectric profiles (direct rhEPO misuse detection) was altered after intermittent hypoxia exposure with a slight shift towards more basic isoforms. However, those shifts never resulted in misinterpretation of results. The intermittent hypoxia exposure protocol studied did not produce any false-positive result for indirect or direct detection of rhEPO misuse in spite of the changes in EPO serum concentrations and urinary EPO isoelectric profiles, respectively.  相似文献   

Developing Generic Competences in the European Higher Education Area: a proposal for teaching the principles of economics     

Manuel Salas Velasco  María Teresa Sánchez Martínez  Noelina Rodríguez Ferrero 《European Journal of Education》2012,47(3):462-476

The participation of Spain in the European Higher Education Area (EHEA) involves a number of important challenges for academics. Adapting to an educational model that is characterised by competence-based teaching is a difficult task, yet it is of paramount importance in the context of current reforms. In an educational system in which the traditional lecture prevails, learning-centred teaching represents a major cultural change with significant consequences. The objective of this study is to offer economics lecturers some practical techniques for use in the classroom. Specifically, it includes suggestions for the planning, preparation and teaching of lectures, seminars, tutorials, case studies, debates, and computer-based learning. It also provides practical advice on student assessment.  相似文献   

La aproximación neuropsicológica a la dislexia evolutiva II: Lateralización hemisférica y aplicaciones educativas     

Dionisio Manga Rodríguez  Francisco Ramos Campos 《Infancia y Aprendizaje》2013,36(34):57-75

Resumen

Se aborda en este trabajo la dominancia o lateralización hemisférica cerebral, en cuanto posible factor etiológico de interés para la neuropsicología de la dislexia evolutiva. Se precisan las relaciones con la lateralidad manual y se revisan, a la luz de los conocimientos actuales, los conceptos legados por Broca y Orton. En este sentido, también se revisa la teoría de la dominancia desde el principio (Kinsbourne) en cuanto contrapuesta a la teoría de la progresiva lateralización hemisférica en la ontogenia (Lenneberg). Los principales modelos de dislexia basados en la organización cerebral se agrupan según hagan referencia a la integración interhemisférica, a la especialización hemisférica o a la integración intersensorial. Como aplicación a la educación, se proponen algunas consideraciones generales derivadas del enfoque neuropsicológico y se revisa críticamente el carácter generalizador de una educación basada en la hemisfericidad.  相似文献   

Learning styles and approaches to learning in excellent and average first-year university students     

Bernardo Gargallo López  Gonzalo Almerich Cerveró  Jesús M. Suárez Rodríguez  Eloïna García Félix  Pedro R. Garfella Esteban 《European Journal of Psychology of Education - EJPE》2013,28(4):1361-1379

We assessed the learning approaches and learning styles of a sample of 148 excellent students selected from 11 degrees from nine centers of the Polytechnic University of Valencia (Spain), and we compared the results with those of a sample of 133 average students from the same centers. We found that excellent students took deeper approach than average students and that they preferred reflective and theoretical learning styles. Average students adopted a more surface approach, and they preferred active and pragmatic learning styles. Greater academic achievement was related to the deep approach and to the reflective and theoretical learning styles. Poorer academic achievement was related to the surface approach and an active style. University professors may reinforce the deep approach by placing high aims for students which go well beyond reproducing knowledge but use other complementary methods other than expository teaching: problem solving, case studies, designing projects, raising questions, discussion and negotiation in the classroom, etc. To accomplish this, teachers must encourage students to be committed, and these methods help do that. It also helps to introduce more demanding evaluation procedures which do not merely involve repeating what has been learnt, but include training guidance that offers students feedback.  相似文献