A theoretical framework for building online communities of practice with social networking tools

This paper proposes a theoretical framework as a foundation for building online communities of practice when a suite of social networking applications referred to as collective intelligence tools are utilized to develop a product or solutions to a problem. Drawing on recent developments in Web 2.0 tools, research on communities of practice and relevant theories of learning, and the authors' own action research experience in collaborative knowledge creation utilizing Web 2.0 tools, this paper discusses a learning community's spiraling process as it moves from a given sociocultural context through discourse, action, reflection, and reorganization toward socially mediated metacognition.

Un cadre théorique pour construire des communautés de pratique en ligne en utilisant des outils de maillage social

Cet article propose un cadre théorique sur lequel édifier des communautés de pratique en ligne lorsqu'on utilise, pour mettre au point un produit ou des solutions à un problème, une série d'applications destinées à la construction de réseaux humains et connues sous le nom d'outils d'intelligence collective. En s'appuyant sur les évolutions récentes des outils Web 2.0, sur les recherches sur les communautés d'usage et les théories de l'apprentissage pertinentes ainsi que sur l'expérience propre aux auteurs en matière de recherche action sur la création collaborative de savoir en utilisant le Web 2.0, le présent article examine le processus en spirale d'une communauté d'apprentissage qui part d'un contexte socio culturel donné et qui passe par le discours, l'action la réflexion et la réorganisation pour atteindre la métacognition reposant sur la médiation humaine.

Ein Theorierahmen für den Aufbau von “Online‐Communitives of Practice” mit Hilfe von Anwendungen für Social Networking

In diesem Beitrag wird ein theoretischer Rahmen als Grundlage für den Aufbau von Online‐Praxis‐Gemeinschaften vorgestellt, wenn eine Reihe von Social Networking Anwendungen, auf die man sich als kollektive Intelligenz‐Tools beziehen kann, benutzt wird, um ein Ergebnis oder eine Problemlösung zu entwickeln. Wenn man den neuesten Entwicklungsstand bei den Web 2.0 tools mit einbezieht, die Forschung im Kommunikationsbereich, die relevanten Lerntheorien und die eigenen Forschungen und praktischen Erfahrungen des Autors in der Benutzung von Web 2.0‐Anwendungen auf dem Gebiet der gemeinschaftlichen Wissensermittlung, belegt dieses Papier den spiralförmigen Prozess beim Bewegen von einem bestimmten soziokulturellem Kontext aus durch Diskurs, Aktion, Reflektion und Reorganisation hin zu sozial vermittelter Metaerkenntnis.

Un marco teórico para la construcción de comunidades de práctica en línea con herramientas de creación de redes sociales

Este artículo propone un marco teórico como base para la construcción de comunidades de práctica cuando se utiliza una serie de aplicaciones sociales en redes (conocidas como herramientas de inteligencia colectiva) para desarrollar un producto o solucionar tal o tal problema. Basandose en las evoluciones recientes de las herramientas Web 2.0, en las investigaciones sobre las Comunidades de Uso y las teorías del aprendizaje más pertinentes así como en la experiencia propia de la investigación/acción por parte de los autores sobre la creación colaborativa de conocimiento a través del uso de herramientas Web 2.0, este artículo examina la evolución « en espiral » de una comunidad de aprendizaje que sale de un contexto socio cultural determinado y pasando por el discurso, acción, reflexión, alcanza la metacognición basada en la mediación humana.     

Letter to the Editor

In the Summer 2007 issue of The Educational Forum, the Open Forum article “An Inconvenient Curriculum” by Marcus Ford and Peter Friederici magnificently focused on the nature of curriculum in higher education in an ever-changing environment in the present globalized world. By highlighting the inevitability of a multidisciplinary curriculum largely focusing on the immediate issues of global and regional concerns, that article showed the base of discursive thought in this regard.     

Enhancing Research Capacity in Gerontological Social Work

There is an untapped potential of social work faculty to conduct aging research aimed at enhancing the well-being of older adults. To better exploit this resource, we have designed, implemented, and evaluated a postgraduate training program in aging research. The goal of the program is to build and sustain a community of social work faculty committed to conducting aging research, to incorporating recent advances in their courses, and to engaging their students in aging research. Program design includes an initial institute (which focuses on research methodology, selected content areas, and procedural matters related to preparation and submission of grant applications); ongoing consultation; and a midyear meeting during the intervening year and a follow-up institute that provide the participants with extended opportunities to discuss the proposals they develop. Evaluation data presented in this paper focus on the first two cohorts (who entered in summer 2004 and summer 2005). These data indicate that the program has been highly effective in expanding the pool of faculty engaged in aging research. Lessons learned with regard to program structure, content, recruitment, evaluation, and sustainability are shared.     

Measuring transactional distance in web-based learning environments: an initial instrument development

This study was an initial attempt to operationalise Moore’s transactional distance theory by developing and validating an instrument measuring the related constructs: dialogue, structure, learner autonomy and transactional distance. Data were collected from 227 online students and analysed through an exploratory factor analysis. Results suggest that the instrument, in general, shows promise as a valid and reliable measure of the constructs related to transactional distance theory. Potential refinement of the instrument and future research directions are included at the end of the article.     

New Model,New Strategies: Instructional design for building online wisdom communities

We discuss the development of an instructional design model, WisCom (Wisdom Communities), based on socio‐constructivist and sociocultural learning philosophies and distance education principles for the development of online wisdom communities, and the application and evaluation of the model in an online graduate course in the USA. The WisCom model aims to facilitate transformational learning by fostering the development of a wisdom community, knowledge innovation, and mentoring and learner support in an online learning environment, based on a “Cycle of Inquiry” module design, and a “Spiral of Inquiry” program design. Extending beyond current instructional design practice, WisCom provides both a new model for teaching that builds upon the inherent capacity of networked communication to support the growth and intellectual development of communities of practice, and a new model of learning where learners engage in the process of scholarly inquiry that supports individual and collective learning. Evaluation and research data support the WisCom model's ability to design a learning community engaged in the collaborative construction of knowledge.     

A biologically active constituent of withania somnifera (ashwagandha) with antistress activity

In Ayurvedic medicine,Withania somnifera (Ashwagandha) is well known for its anti-stress activity. A passive rat experimental model, where the animals are subjected to multiple stress of cold, hypoxia, restraint (C-H-R) has been developed to evaluate adaptogenic properties of various fractions of W. somnifera root extracts. We have carried out extraction of roots of W. somnifera with water and further isolated one of the active constituents called compound X and also tested its anti-stress activity in C-H-R model. The effect of administration of W. somnifera water suspension (360 mg/Kg bw) and compound X (20mg/Kg bw) on the fall and recovery of colonic temperature was noted. There was an increase of ≈38% and ≈54% in the time taken to attain T_rec 23°C by rats given a single dose of fresh aqueous suspension and biologically active constituent (Compound X) respectively, where as decrease in the recovery time to attain T_rec 37°C is ≈13% and ≈33% respectively, as compared to control group. It is clear that rats treated with the fresh aqueous suspension and compound X ofWithania somnifera, could withstand the multiple stress of C-H-R better than control group.     

Type-2 diabetes related intermediate phenotypic traits in north Indian diabetics

Asian Indians are known to be at a higher risk of developing T2DM, but the underlying genetic factor in this population is still not well understood. T2DM is a complex genetic trait and assessment of disease related intermediate phenotypic traits is an important initial step towards any systematic genomic study. Therefore, in the present study we have assessed diabetes related intermediate phenotypic traits of insulin secretion and insulin resistance in the patients belonging to this population. The study included 157 T2DM patients of either sex ranging in age from 45–80 years and 84 non-diabetic subjects with no family history of diabetes, ranging in age from 45 to 75 years served as controls. Intermediate phenotypic traits studied were BMI, W: H ratio, fasting free fatty acid level and Insulin resistance and secretion. Diabetics were found to have significantly higher W: H ratio (p<0.001), FFA (p<0.001) and HOMA-R (p<0.001) as compared to non-diabetics. However, there was no significant difference in their BMI and HOMA-β. There was a positive correlation between FFA level and HOMA-R among diabetics, but not among controls. These findings suggest that in abdominal obesity FFA mediated insulin resistance is an important causative factor underlying T2DM in this population. Moreover, comparable HOMA-β in diabetics reflects compensatory insulin hyper secretion in these subjects. There is a need to examine relative contribution and precise nature of genetic factor in their tendency for central obesity, free fatty acidemia and insulin resistance.     

Effect of vitamin E on the platelet xanthine oxidase and lipid peroxidation in the patients of myocardial infarction

Platelets play important role in precipitating ischaemic myocardial syndromes in many ways. One of the consequences of ischaemic diseases is excessive generation of oxygen derived free radicals that have numerous pathophysiological consequences. Platelet pro-oxidant enzyme, xanthine oxidase is one of the sources of generation of free radicals. In the present paper, we report the effect of administration of vitamin E along with aspirin on the levels of platelet xanthine oxidase and extent of free radical mediated damage in the patients reperfused after myocardial infarction. Our findings show that administration of 400 mg. vitamin E for six days along with 80 mg. aspirin has an excellent anti-oxidant effect as evidenced by reduced platelet xanthine oxidase activity and lowering of malondialdehdye (MDA) levels which is an index of the extent of free radical mediated damage.