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New Media and Open and Distance Learning: New challenges for Education in a Knowledge Society
The "digital society" provides not only with new technology, but also with new concepts. Information plays a central role and becomes a valuable good, but knowledge cannot be reduced to information, and one aim for educators is to contribute in a "knowledge society", not only an "information society". A knowledge society is structured in networks, enriching the traditional hierarchies; a knowledge society promotes a kind of "collective intelligence". In such a society, open and distance learning
Author(s): Cornu Bernard

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WWG: a Distributed Infrastructure for Learning in Groups
This paper describes the experiences of learning and working in groups on the Computer Science studies at Virtual Campus of the Open University of Catalunya. Two communities have used a web based shared workspace tool to a) coordinate the task of tutors of a computer architecture course, and b) a problem based collaborative learning project with software engineering students. These experiences have lead to the design of WWG: a distributed infrastructure for distance learning in groups at Interne
Author(s): Marquès Joan Manuel,Navarro Leandro,Daradoumis Th

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Extending the Scope of Asynchronous Collaboration: a Matter of Being Autonomous and Self-sufficient
Asynchronous collaborative applications and systems have to deal with complexities associated with interaction nature, idiosyncrasy of groups and technical and administrative issues. Inclusion of requirements derived from them is costly (in time, resources and economically). Existing solutions addresses asynchronous collaboration via simplification of requirements and by using centralized models. In this paper we present LaCOLLA, a fully decentralized infrastructure for building collaborative ap
Author(s): Marquès Joan Manuel,Navarro Leandro,Daradoumis Th

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A Model for the Efficient Representation and Management of Online Collaborative Learning Interaction
This study aims to explore the importance of the efficient representation and management of the event information generated from group activity in online collaborative learning practices so that we can use it to provide awareness about individual and group behaviour. The achievement of this goal first involves the design of a conceptual model of collaborative learning interaction that structures and classifies the information generated in an online collaborative learning situation at several lev
Author(s): Caballé Santi,Daradoumis Thanasis,Xhafa Fatos

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Supporting Effective and Useful Web-based Distance Learning
Learners interacting in a Web-based distance learning environment produce a variety of information elements during their participation; these information elements usually have a complex structure and semantics, which makes it rather difficult to find out the behavioral attitudes and profiles of the users involved. User modelling in on-line distance learning is an important research field focusing on two important aspects: describing and predicting students’ actions and intentions as well as ada
Author(s): Caballé Santi,Daradoumis Thanasis,Xhafa Fatos,Est

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Gridifying IBM's Generic Log Adapter to Speed-Up the Processing of Log Data
Problem determination in today's computing environments consumes between 30 and 70% of an organization’s IT resources and represents from one third to one half of their total cost of ownership. The first step to cutting down costs in this area and to enable autonomic computing systems is to have all parts of the system report status in a common log data format and semantics in order to be able to exploit the status information of the system as a whole. The Generic Log Adapter (GLA) is a generic
Author(s): Paniagua Claudi,Xhafa Fatos,Daradoumis Thanasis

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Exploring Semantic Description and Matching Technologies for Enhancing the Automatic Composition of
In the implementation of e-learning frameworks, a problem still unsolved is how to use and integrate low-level learning services to compose more complex high-level services or tools that make sense to both tutors and learners. In that sense semantic description of Grid learning Services appears like a powerful tool to be used for discovering and matching learning services depending of a set of parameters inside the learning framework. These parameters must represent significant functional charac
Author(s): Gutiérrez-Carreón Gustavo,Daradoumis Thanasis,Jo

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An Experimental Study on Peer Selection in a P2P Network over PlanetLab
Peer selection is an important aspect in many P2P applications requiring efficient assignment and execution of jobs to peer nodes and search and file transfer, among others. Due to increasing interest of using P2P systems for distributed computing, peer selection is taking relevance and several models have been proposed in the P2P literature. Yet, there are very few experimental studies for peer selection in P2P networks deployed in real large scale networks. In this work we present an experimen
Author(s): Xhafa Fatos,Barolli Leonard,Fernandez Raul,Daradou

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A Grid-Based Approach for Processing Group Activity Log Files
The information collected regarding group activity in a collaborative learning environment requires classifying, structuring and processing. The aim is to process this information in order to extract, reveal and provide students and tutors with valuable knowledge, awareness and feedback in order to successfully perform the collaborative learning activity. However, the large amount of information generated during online group activity may be timeconsuming to process and, hence, can hinder the rea
Author(s): Xhafa Fatos,Caballé Santi,Daradoumis Thanasis,Zho

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A Grid-aware Implementation for Providing Effective Feedback to On-line Learning Groups
Constantly providing feedback to on-line learning teams is a challenging yet one of the latest and most attractive issues to influence learning experience in a positive manner. The possibility to enhance learning group’s participation by means of providing appropriate feedback is rapidly gaining popularity due to its great impact on group performance and outcomes. Indeed, by storing parameters of interaction such as participation behaviour and giving constant feedback of these parameters to the
Author(s): Caballé Santi,Paniagua Claudi,Xhafa Fatos,Daradou

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Semantic Description of Grid Based Learning Services
Grid technology has emerged as a powerful tool to increase the capabilities of e-learning frameworks. Learning services are fundamental components representing functionalities that can be easily reused without knowing the details of how services have been implemented. On the one hand, a problem that still remains unsolved is how to use and integrate low-level learning services to compose more complex high-level services or tools that make sense to both tutors and learners. On the other hand, the
Author(s): Gutiérrez-Carreón Gustavo,Daradoumis Thanasis,Jo

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Efficient Embedding of Information and Knowledge into CSCL Applications
This study aims to explore two crucial aspects of collaborative work and learning: the importance of enabling CSCL applications, on the one hand, to capture and structure the information generated by group activity and, on the other hand, to extract the relevant knowledge in order to provide learners and tutors with efficient awareness and support as regards collaboration. To this end, we first identify and define the main types of information generated in online group activity and then propose
Author(s): Caballé Santi,Daradoumis Thanasis,Xhafa Fatos

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Improvement of JXTA protocols for supporting reliable distributed applications in P2P systems
In any distributed application, the communication between the distributed processes/nodes of the distributed systems is essential for both reliability and efficiency matters. In this work we address this issue for distributed applications based on JXTA protocols. After a careful examination of the current version of JXTA protocols, we observed the need for improving the original JXTA protocols, such as pipe services, to ensure reliable communication between peer nodes and the discovery and prese
Author(s): Xhafa Fatos,Fernandez Raul,Daradoumis Thanasis,Bar

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A Service-oriented Platform for the Enhancement and Effectiveness of the Collaborative Learning Proc
Modern on-line collaborative learning environments are to enable and scale the involvement of an increasing large number of single/group participants who can geographically be widely distributed, and who need to transparently share a huge variety of both software and hardware distributed learning resources. As a result, collaborative learning applications are to overcome important non-functional requirements arisen in distributed environments, such as scalability, flexibility, availability, inte
Author(s): Caballé Santi,Xhafa Fatos,Daradoumis Thanasis

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Contextualizing Discussions in Distance Learning Systems
In distance learning systems, communication tools are rarely integrated into learning activities, which does not encourage their use. The main goal of our work is to mitigate this lack of integration. Our aim is to bring the discussion activities closer to the learning activities, i.e. to situations to which the discussions must ideally relate to in order to promote learning between students. Thus, we suggest two models of forum which are contextual and based on a structuring of discussions resp
Author(s): George Sébastien

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KMsim: A Meta-Modelling Approach and Environment for Creating Process-Oriented Knowledge Management
This paper presents a new approach to modelling process-oriented knowledge management (KM) and describes a simulation environment (called KMSIM) that embodies the approach. Since the beginning of modelling researchers have been looking for better and novel ways to model systems and to use appropriate software to create simulations. The application of the approach and KMSIM make it possible to create realistic business models (BMs) and simulate the consequences of KM interventions and events. The
Author(s): Anjewierden Anjo,Shostak Irina,de Hoog Robert

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Improving database design teaching in secondary education: action research implementation for docume
Database design and use has educational interest for utilitarian and learning reasons. Database technology has significant economic impact and the demand for database design can not be covered by the existent educated experts. Furthermore the database management systems available at schools could be used for the design and implementation of high quality learning activities. Databases are general purpose modeling environments that enable problem solving using conceptual frameworks closer to the s
Author(s): Fessakis George,Dimitracopoulou Angelique,Komis Va

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Collaboration Activity Function: An interaction analysis’ tool for Computer Supported Collaborative
During the last years, an increased interest has been observed on tools analyzing collaborative interactions that could be useful for researchers, teachers, or even students. The paper presents such a tool, based on the formally defined collaborative activity function (CAF). The empirical evaluation of CAF is also presented. The evaluation is focused on teachers using CAF during and after sessions of synchronous collaborative problem solving among students.
Author(s): Fessakis George,Petrou Argyroula,Dimitracopoulou A

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An examination of two types of timeline, linear vs. staggered: a mixed method approach
This study conducted as follow-up study to evaluate effects of two different time-based interfaces, linear and staggered. This study also tries to reveal users’ preferences when they look for information in two different computer-based timeline. Explanatory mixed method design was implemented. In the first part, quantitative, there were 42 subjects. Results shows no significant difference between two types of computer-based time-line in terms of task completion time and answer accuracy. In the
Author(s): Kursun Engin,Cagiltay Kursat

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Shared conceptualisations in weblogs
In this paper we investigate how conceptualisations can be identified in weblogs using language technology (automated text analysis). We focus on getting a handle on both the concepts bloggers use and the way they think these concepts are related. The analysis of these conceptualisations can then be applied to a single weblog, resulting in a visualisation of potential conceptualisations the blogger wants to share with the outside world. Another type of analysis is to determine the overlap, or sh
Author(s): Anjewierden Anjo,Brussee Rogier,Efimova Lilia

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