M. K. Abdi

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The development of software products consumes a lot of time and resources. On the other hand, these development costs are lower than maintenance costs, which represent a major concern, specially, for systems designed with recent technologies. Systems modification should be taken rigorously, and change effects must be considered. In this paper, we propose an(More)
Several non probabilistic approaches were proposed in the literature to analyze and predict change impact in Object-Oriented (OO) systems. Different aspects were considered in these studies and several experiments were conducted to check some hypotheses. However, causality relation between software internal attributes and change impact still misses(More)
This study has to be considered as another step towards the proposal of assessment/predictive models in software quality. We consider in this work, that a probabilistic model using Bayesian nets constitutes an interesting alternative to non-probabilistic models suggested in the literature. Thus, we propose in this paper a probabilistic approach using(More)
Nous proposons dans cet article une approche probabiliste utilisant les réseaux bayésiens pour analyser et prédire les impacts des changements dans les systèmes à objets. Un modèle d'impact a été construit et des probabilités ont été affectées aux différents sommets du réseau. Des données récoltées sur un système réel sont utilisées pour étudier(More)
BACKGROUND AND OBJECTIVE The circle of Willis (COW) supports adequate blood supply to the brain. The cardiovascular system, in the current study, is modeled using an equivalent electronic system focusing on the COW. METHODS In our previous study we used 42 compartments to model whole cardiovascular system. In the current study, nevertheless, we extended(More)
BACKGROUND AND OBJECTIVE Numerical modeling of biological structures would be very helpful tool to analyze hundreds of human body phenomena and also diseases diagnosis. One physiologic phenomenon is blood circulatory system and heart hemodynamic performance that can be simulated by utilizing lumped method. In this study, we can predict hemodynamic behavior(More)
In this paper, a new control scheme with two degrees of freedom using a model reference structure is presented, which has stability, robust performance and model reference behavior at the same time. Also, it is implemented by using the NIOS-II processors in FPGA. The controller with two degrees of freedom is composed of a usual PID controller and a neural(More)