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— Designing and exploiting collaborative activity indicators is a strong challenge for Technology Enhanced Learning Systems (TELS). In this work we compute indicators using modeled traces transformation and we use to allow possible this computation a Trace Based System. We develop a managment TBS for Moodle. We propose an original model-driven approach,(More)
In this paper, we present a model based on the Neural Network (NN) for classifying Arabic texts. We propose the use of Singular Value Decomposition (SVD) as a preprocessor of NN with the aim of further reducing data in terms of both size and dimensionality. Indeed, the use of SVD makes data more amenable to classification and the convergence training(More)
Existing techniques in high-level synthesis mostly assume a simple controller model in the form of a single FSM. However, in reality more complex controller architectures are often used. On the other hand, in the case of programmable processors, the controller architecture is largely defined by the available control-flow instructions in the instruction set.(More)
Several routing protocols for mobile ad hoc networks have been proposed in the literature, each one based on a different strategic: proactive, reactive and hybrid. Some of these protocols have been studied and their performance is evaluated in detail. However a comparison between them is lacking to help determine an optimal strategy. This paper addresses(More)
Evolutionary electronics is a research area which involves application of evolutionary computation in the domain of electronics. It is seen as the most promising alternative to overcome the drawbacks of conventional design. In our case, the evolution of a digital combinational circuit is not intended to discover new or more efficient designs, but to(More)
This paper presents an approach to extract features of online Arabic handwritten characters by combining offline features with Mel Frequency Cepstral Coefficients (MFCCs); indeed, these latter are commonly used as features in speech recognition systems. In this work, we have adapted MFCC method to online handwriting recognition area, and we investigate the(More)
One of the important research topics in the literature of Wireless Sensor Network (WSN) is the design of an efficient routing protocol. This latter is a continuous challenging task due to the networks' variable topology and limited resources. Many researchers have proposed various routing protocols for WSN using some principles taken from geometric field or(More)
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