The paper describes our proposal for adopting 3D spatial representation, based on suitable indications and metrics, for the evaluation of experiences conducted in a Personal Learning Environment (PLE) and its social extension, the Personal Learning Network (PLN). The use of 3D space is a mean for integrating different perspectives (e.g., structured and non-structured learning) but also to foste...

Nowadays, intelligent products carrying information or having decision-making abilities are becoming widespread. The idea of using intelligent products to ensure an information continuum all along the product life cycle (PLC) is more and more shared today. However, it is not that easy to identify the information that must be linked to the product. As a result, this paper proposes an information...

A lot of learning systems platforms are used all over the world. But these conventional E-learning platforms aim at students who are used to work on their own. Our students are young (19 years old – 22 years old), and in their first year at the university. Following extensive interviews with our students, we have designed GE3D, an E-learning platform, according to their expectations and our cri...

Among all kinds of possible faults in a manufacturing system, operational faults occur most often (about 70%). Efficient diagnosis of these faults is critical for improving the availability and productivity of the manufacturing system. This paper presents a hierarchical diagnosis model based on fault tree analysis and two other diagnosis models respectively based on the logic and sequential con...

Bayesian Networks (BN) provide robust probabilistic methods of reasoning under un­ certainty, but despite their formal grounds are strictly based on the notion of condi­ tional dependence, not much attention has been paid so far to their use in dependability analysis. The aim of this paper is to pro­ pose BN as a suitable tool for dependability analysis, by challenging the formalism with basic ...

The Power Line has been extensively studied as the media for high frequency signal transmission for use as a communications environment. In recent years, development of several power line communications protocols, namely X-10, CEBus and LonWorks, renewed the interest on this matter. This paper gives a brief description of the spectral behavior of these protocols’ physical layer, analyzes the fi...

In this paper protocols for home network based on power line communication are presented and compared. CEBus, LonWorks, LnCP and HNCP is considered. Features and MAC protocol are described and layering architecture, MAC performance and Message set are compared.

Product systems are quickly and frequently changed because product life cycle is continuously reduced and adopting new product is steadily fast. Thus, various studies are progressed using PLC simulation which is one of control level simulation. The research that is concerning simulation of control verification for shortening the commissioning which has a lot of trial and error is in progress. A...