Chat-based Computer Supported Collaborative Learning (CSCL) often suffers from limitations due to the communication medium. A frequently reported consequence is the lack of discourse coherence and by this a lack of cognitive coherence in the learning process. To overcome these deficiencies, the implementation of explicit references with chat messages caused higher learning results. We analysed ...

This paper presents a comparative account of unsupervised and supervised learning models and their pattern classification evaluations as applied to the higher education scenario. Classification plays a vital role in machine based learning algorithms and in the present study, we found that, though the error back-propagation learning algorithm as provided by supervised learning model is very effi...

The play-in/play-out approach suggests a new paradigm for system development using scenario-based requirements. It allows the user to develop a high level scenario-based model of the system and directly execute system behavior. The supporting tool, the Play-Engine has been used successfully in several projects and case-studies. As systems developed using this method grow in size and complexity,...

In this paper we define and study Scenario Based P Systems, a model of computation inspired by the metabolic pathways and networks. Starting from the classical definition of P systems with symbol objects and multiset rewriting rules, we define regular expressions able to capture the causal dependencies among different executions of the rules. The results show the computational power of this model.

Like other user-centered approaches, scenario-based design changes the focus of design work from defining system operations (i.e., functional specification) to describing how people will use a system to accomplish work tasks and other activities. However, unlike approaches that consider human behavior and experience through formal analysis and modeling of well-specified tasks, scenario-based de...

A method for scenario based requirements engineering is described. The method uses two types of scenario, structure models of the system context and scripts of system usage. A modelling language is reported for describing scenarios, and heuristics are given to cross check dependencies between scenario models and the requirements specification. Heuristics are grouped into several analytic treatm...

Scenarios have proven useful to elicit, validate and document requirements but cannot be used in isolation. Our concern in this paper is to integrate scenario-based techniques in existing methods. We propose a set of operators to support such an integration. This set is classified in two sub-sets: the one dealing with the integration of the product models of the two initial methods and the one ...

distance learning is expanding and replacing the traditional academic medical settings. managing trauma patients seems to be a prerequisite skill for medical students. this study has been done to evaluate the efficiency of distance learning on performing the initial assessment and management in trauma patients, compared with the traditional learning among senior medical students. one hundred an...

This mini tutorial explains the concepts and process of scenario based requirements engineering. Definitions of scenarios are reviewed, with their informal and more formal representations, and roles in the requirements process. The relationships between scenarios, specifications and prototypes is explored, and set in the perspective of human reasoning about requirements. Methods for scenario ba...