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This paper introduces an approach based on the 3C (communication, coordination and cooperation) collaboration model to the development of collaborative systems. The 3C model is studied by means of a detailed analysis of each of its three elements, followed by a case study of a learningware application and the methodology of a web-based course, both designed(More)
In this paper, aspects related to discourse structure like message chaining, message date and categorization are used by teachers to coordinate educational forums in the AulaNet environment. These aspects can be computa-tionally analyzed without having to inspect the content of each message. This analysis could be applied to forums in other educational(More)
In an education environment, a forum provides a valuable tool that can be used to foster reflection and a deeper analysis of subjects being discussed. However, as an asynchronous communication tool, participation can occur at any time, demanding a constant attention of the teacher to satisfactorily mediate the group and the discussion. In addition, a(More)
Very often, when using a chat tool where more than one participant is talking simultaneously, it is difficult to follow the conversation, read all the different messages and work out who is talking to whom about what. This problem has been dubbed BChat Confusion.'' This article investigates this problem in debate sessions in an online university course.(More)
The Coordination of interdependencies between tasks in collaborative environments is a very important and difJicult endeavor. The separation between tasks and interdependencies allows f o r the use of different coordination policies in the same collaborative environment by changing only the coordination mechanisms that control the interdependencies. This(More)
The research presented in this article investigates a problem related to the lack of understanding of messages exchanged during chat sessions. There is confusion in the majority of the textual chat tools when various people converse at the same time. Sometimes a participant does not identify the relationship of a new message with a previous one, and is(More)
This paper addresses the issue of coordination, which is an essential matter to the specification of activities in collaborative systems. An activity can be described as a set of interdependent tasks. In order to specify task interdependencies, an extensible model encompassing a set of temporal and resource management relations is initially presented. Then,(More)
The objective of this research is to reduce confusion in chat conversation, which is the main problem regarding the use of chat tools for holding online course debates. This problem is investigated using a Groupware Engineering approach. A number of successive versions of the Mediated Chat tool have been developed as part of this research. This research(More)
This paper shows how the use of categorization and structuring of messages in asynchronous textual communication tools could be usefiil in course deliver via the Internet in order to facilitate the argumentation and to guide the participants to reflect about their messages. Although the use of categorization caused an increase in the total number of(More)