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  • Collection: Review Articles

Cette étude cible la valorisation des déjections bovines et avicoles pour la production du biogaz afin de permettre une bonne gestion de ces dernières (déjections) au Centre National de Formation Zootechnique, Vétérinaire et Halieutique (Centre…

In this paper we are interested in developing new and easy software for the sizing of a solar installation of hot water production. Such installation is successful only if its determination, its conception and its realization are made with care. This…

This paper proposes an intelligent control method for the maximum power point tracking (MPPT) of a photovoltaic system under variable temperature and insolation conditions. This method uses a fuzzy logic controller applied to a DC-DC converter…

This paper proposes a control method for the maximum power point tracking (MPPT) of a photovoltaic system and this with the aim of increasing the output power of a photovoltaic system. An electronic controller is built-in between the photovoltaic…

On étudie numériquement la convection à double diffusion dans une enceinte horizontale. La cavité soumise à un gradient de concentration verticale est chauffée différentiellement au niveau de ses parois horizontales ou verticales. L'objectif du…

In this work, we show that the system of difference equationsxn+1=(ayn-2xn-1yn+bxn-1yn-2+cyn-2+d)/(yn-2xn-1yn),yn+1=(axn-2yn-1xn+byn-1xn-2+cxn-2+d)/(xn-2yn-1xn),where n belongs to the set of positive integer numbers, x-2, x-1, x0, y-2, y-1 and y0 are…

In this work, we show that the system of difference equationsxn+1=(ayn-2xn-1yn+bxn-1yn-2+cyn-2+d)/(yn-2xn-1yn),yn+1=(axn-2yn-1xn+byn-1xn-2+cxn-2+d)/(xn-2yn-1xn),where n belongs to the set of positive integer numbers, x-2, x-1, x0, y-2, y-1 and y0 are…

 In this paper, we construct the solution expressions of fourth order nonlinear difference systems

Φn+1       =                   Φn−2Ψn−3                       ,
        α + Ψn (±1 ± Γn−1Φn−2Ψn−3)
Ψn+1       =                  …

In this paper, we investigate the form of the solutions of two systems of rational difference equations of second order, where the initial conditions are arbitrary nonzero real numbers.

This research lies within the scope of environmental research for seeking solutions for the optimizations of energy in the electrical supply network ADE- Adrar (Algérienne des Eaux d’Adrar/Algeria). Indeed, the principal aiming of this research is…
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