Juan Perez - Academia.edu (original) (raw)
Address: Bogotá, Distrito Especial, Colombia
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Educational Technology & Society, 2006
This paper introduces Collage, a high-level IMS-LD compliant authoring tool that is specialized f... more This paper introduces Collage, a high-level IMS-LD compliant authoring tool that is specialized for CSCL (Computer-Supported Collaborative Learning). Nowadays CSCL is a key trend in e-learning since it highlights the importance of social interactions as an essential element of learning. CSCL is an interdisciplinary domain, which demands participatory design techniques that allow teachers to get directly involved in design activities. Developing CSCL designs using LD is a difficult task for teachers since LD is a complex technical specification and modelling collaborative characteristics can be tricky. Collage helps teachers in the process of creating their own potentially effective collaborative Learning Designs by reusing and customizing patterns, according to the requirements of a particular learning situation. These patterns, called Collaborative Learning Flow Patterns (CLFPs), represent best practices that are repetitively used by practitioners when structuring the flow of (collaborative) learning activities. An example of an LD that can be created using Collage is illustrated in the paper. Preliminary evaluation results show that teachers with experience in CL but without LD knowledge, can successfully design real collaborative learning experiences using Collage.
Journal of Infectious Diseases, 1999
To evaluate enteropathogens and other factors associated with severe disease in children with dia... more To evaluate enteropathogens and other factors associated with severe disease in children with diarrhea, 381 children !5 years of age with diarrhea and moderate to severe dehydration (in-patients) and 381 age-, sex-, and date-of-visit-matched children with mild diarrhea (outpatients) presenting to a hospital in Peru, were studied. Rotavirus was detected in 52% of the in-patients and 35% of the out-patients (odds ratio , 95% confidence interval [95% [OR] ϭ 2.3 ); 95% of the rotaviruses among in-patients were of serotypes G1-G4. The risk CI] ϭ 1.6-3.2 of severe diarrhea was particularly great in children who were not exclusively breast-fed in early infancy and who also lacked piped water in their homes (for children with both characteristics , 95% ). The high prevalence of rotavirus and its association OR ϭ 6.8 CI ϭ 3.6-12.8 with severe diarrhea underscores the need for rotavirus vaccines. Interventions to educate mothers and improve access to safe water should augment the impact of rotavirus vaccines in preventing severe diarrhea.
Educational scenarios for cooperative use of Personal Digital Assistants
Journal of Computer Assisted Learning, 2003
Based on experience in orchestrating collaborative learning scenarios with ubiquitous computing t... more Based on experience in orchestrating collaborative learning scenarios with ubiquitous computing technology, three approaches for extending co-constructive modelling and discussion environments with Personal Digital Assistants (PDAs) connected through a wireless network are described. One application is an annotation tool, the second one replicates a modelling system on the PDA and the third one makes use of a wireless optical reader
Educational Technology & Society, 2006
This paper introduces Collage, a high-level IMS-LD compliant authoring tool that is specialized f... more This paper introduces Collage, a high-level IMS-LD compliant authoring tool that is specialized for CSCL (Computer-Supported Collaborative Learning). Nowadays CSCL is a key trend in e-learning since it highlights the importance of social interactions as an essential element of learning. CSCL is an interdisciplinary domain, which demands participatory design techniques that allow teachers to get directly involved in design activities. Developing CSCL designs using LD is a difficult task for teachers since LD is a complex technical specification and modelling collaborative characteristics can be tricky. Collage helps teachers in the process of creating their own potentially effective collaborative Learning Designs by reusing and customizing patterns, according to the requirements of a particular learning situation. These patterns, called Collaborative Learning Flow Patterns (CLFPs), represent best practices that are repetitively used by practitioners when structuring the flow of (collaborative) learning activities. An example of an LD that can be created using Collage is illustrated in the paper. Preliminary evaluation results show that teachers with experience in CL but without LD knowledge, can successfully design real collaborative learning experiences using Collage.
Journal of Infectious Diseases, 1999
To evaluate enteropathogens and other factors associated with severe disease in children with dia... more To evaluate enteropathogens and other factors associated with severe disease in children with diarrhea, 381 children !5 years of age with diarrhea and moderate to severe dehydration (in-patients) and 381 age-, sex-, and date-of-visit-matched children with mild diarrhea (outpatients) presenting to a hospital in Peru, were studied. Rotavirus was detected in 52% of the in-patients and 35% of the out-patients (odds ratio , 95% confidence interval [95% [OR] ϭ 2.3 ); 95% of the rotaviruses among in-patients were of serotypes G1-G4. The risk CI] ϭ 1.6-3.2 of severe diarrhea was particularly great in children who were not exclusively breast-fed in early infancy and who also lacked piped water in their homes (for children with both characteristics , 95% ). The high prevalence of rotavirus and its association OR ϭ 6.8 CI ϭ 3.6-12.8 with severe diarrhea underscores the need for rotavirus vaccines. Interventions to educate mothers and improve access to safe water should augment the impact of rotavirus vaccines in preventing severe diarrhea.
Educational scenarios for cooperative use of Personal Digital Assistants
Journal of Computer Assisted Learning, 2003
Based on experience in orchestrating collaborative learning scenarios with ubiquitous computing t... more Based on experience in orchestrating collaborative learning scenarios with ubiquitous computing technology, three approaches for extending co-constructive modelling and discussion environments with Personal Digital Assistants (PDAs) connected through a wireless network are described. One application is an annotation tool, the second one replicates a modelling system on the PDA and the third one makes use of a wireless optical reader