Adrar, Algeria
Adrar, Algeria

The University of Adrar of the African Ahmed Draïa is a university, located in Algeria. Wikipedia.

Time filter
Source Type

Harrouz A.,University of Adrar
Proceedings of 2016 8th International Conference on Modelling, Identification and Control, ICMIC 2016 | Year: 2016

This paper give research of errors in dynamic metering system. We present measurement and metrological control of sensor in dynamic metering system. We discuss instruments, reference standards and the important parameters to consider when controlling a dynamic metering system. We finished with calibration of turbine flow meter and we give results experimentally of this work. © 2016 University of MEDEA, Algeria.

Boulhares I.,University of Adrar | Omari M.,University of Adrar
Proceedings of 2016 8th International Conference on Modelling, Identification and Control, ICMIC 2016 | Year: 2016

Wireless Sensor Networks (WSNs) consist of small nodes with sensing, computation, and wireless communications capabilities. Routing is one of the new key technology which has become a hot research nowadays since the applications of WSNs are growing everywhere. Hierarchical routing in wireless sensor networks (WSNs) is a very important topic that has been attracting the research community in the last decade. In our work, we proposed a set of hierarchical hybrid protocols between clustering-based LEACH-1R protocol and chain-based PEGASIS protocol, where we aim to enhance the lifetime of the network. © 2016 University of MEDEA, Algeria.

Omari M.,University of Adrar | Dahou A.,Wuhan University of Technology
2016 International Conference on Industrial Informatics and Computer Systems, CIICS 2016 | Year: 2016

Ad-hoc network has opened a new dimension in wireless networks. It allows wireless nodes to communicate with each other in the absence of centralized support. It does not follow any fixed infrastructure because of the mobility of nodes and multi-path propagations. Link instability and node mobility make routing a core issue in MANETs. A suitable and effective routing mechanism helps to extend the successful deployment of MANETs. In this paper, we have simulated and analyzed two routing protocols: DSR (Dynamic Source Routing Protocol) and DYMO (Dynamic MANET On-demand Routing). Our simulations were conducted using the OMNET simulation tool. Simulation results showed a better performance of DYMO over DSR in terms of throughput, packet delay, packet dropping, and collision ratio. © 2016 IEEE.

Yousfat A.,University of Adrar
International Journal of Engineering and Technology | Year: 2015

This paper uses the quadratic approach to select the optimum portfolio of the Malaysian stovk exchange. This framework deals with ten biggest firms posted on the stock exchange during 2014. The result shows that the optimum portfolio includes 22 % of Axiata Group shares, 11% of Genting shares, 30 % of Petronas Chemicals shares, 1% of Sime Darbi shares and 36 % of Tenaga Nasional shares.

Younsi M.,University of Adrar | Manaa S.,University of Adrar
Energy Procedia | Year: 2013

Here we report the synthesis and some physical properties of superoxides CuYO2.51 and CuYO225 prepared from the delafossite CuYO2 respectively by thermal oxidation at 380 °C under O 2-flow and soft chemistry in NaBrO (5N) solution and their applications as catalysts for solar energy conversion in a chemical H 2 evolution, upon visible light. The oxygen insertion was accompanied by partial oxidation of Cu+ lattice. For CuYO225, the chemical analyses as well as magnetic data reveal the presence of mixed valent states containing at least formally an equal number of Cu+ and Cu2+, In air, CuYO2+X are thermally stable up to 500 °C above wich they undergo an irreversible conversion into CuY 2O5. The oxides are chemically stable in basic media and under illumination, they are stabilizsd by hole consumption reactions involving SO32- and S2- as holes scavengers. The flat band potentials lying between 0,17 and 0,17 eV, are located above the H2O/H2 level, leading to a spontaneous H2-evolution. The rate of H 2-formation is altered by the oxygen insertion and the best photoactivity is obtained over CuYO225 immersed at 0.025 M sulfide S2- solution. A photoelectrochemical study is reported for comparison with photoactivity results. © 2013 The Authors. Published by Elsevier Ltd.

Rebhi M.,University of Adrar | Benatillah A.,University of Adrar | Sellam M.,Béchar University | Kadri B.,Abou Bekr Belkaid University Tlemcen
Energy Procedia | Year: 2013

The photovoltaic array characteristic is a non-linear curve that the maximum power point varies depending on the fluctuation of the solar radiation and temperature; however the energy transfer from the generator to the load requires an adapter circuit allowing the stabilization of system controlled by a command based on specific algorithm, in this paper we want to analyze the electrical performances of DC-DC converter assisted by MPPT control in comparison between Perturb & Observe, PID and fuzzy logic control (FLC) to loading a storage battery .Our contribution is to explain the precision, the rapidity and the stability of the Stand-alone Photovoltaic System (SPV) under each MPPT control , implemented in the south west of Algeria. © 2013 The Authors.

Makhloufi S.,University of Adrar
International Journal of Energy and Environmental Engineering | Year: 2015

Uncertain renewable energy supplies, load demands and the non-linear characteristics of some components of photovoltaic (PV) systems make the design problem not easy to solve by classical optimization methods, especially when relevant meteorological data are not available. To overcome this situation, modern methods based on artificial intelligence techniques have been developed for sizing PV systems. However, simple methods like worst month method are still largely used in sizing simple PV systems. In the present study, a method for sizing remote PV systems based on genetic algorithms has been compared with two classical methods, worst month method and loss of power supply probability (LPSP) method. The three methods have been applied to a PV lighting system with orientation due south and inclination angles between 0° and 90° in Adrar city (south Algeria). Because measured data for the chosen location were not available, a year of synthetic hourly meteorological data of this location, generated by PVSYST software, have been used in the simulation. Genetic algorithms and worst month methods give results close to each other between 0° and 60° but the system is largely oversized by the worst month method when the tilted angle is over 60°. The results obtained by LPSP method show that the system is very undersized. Hence, a proposition has been made to improve results obtained by this method. © 2015, The Author(s).

Bentouba S.,University of Adrar | Bourouis M.,Rovira i Virgili University
Applied Thermal Engineering | Year: 2016

The electricity supply for the large region of southern Algeria is generated by diesel power, which has an enormous technical and environmental impact. The alternative to this is to use renewable energy sources and to take advantage of the high potential of solar photovoltaic and wind energy. The average daily solar radiation in this region is equal to 7.82 kWh/m2/day and the wind reaches a speed between 5 and 11 m/s. In this paper, we proceed to evaluate the technical and economic feasibility of using a hybrid generation system to satisfy the electricity demand for Timiaouine town, which is located in the extreme southwestern part of Algeria. Timiaouine, with more than 200 families, is not connected to the power grid. The feasibility of various configurations of renewable power generation was evaluated. The optimization results predict that 100% of the electricity demand could be supplied to the town by using a hybrid configuration composed of a wind energy system, a solar PV system and a diesel generator used as a backup system. The cost of electricity generation with this system was estimated at 0.176 US$/kWh. Carbon emissions to the atmosphere could approximately be reduced by 593.125 tons/year. © 2015 Elsevier Ltd. All rights reserved.

Cheragui M.A.,University of Adrar
CEUR Workshop Proceedings | Year: 2012

The demand for language translation has greatly increased in recent times due to increasing cross-regional communication and the need for information exchange. Most material needs to be translated, including scientific and technical documentation, instruction manuals, legal documents, textbooks, publicity leaflets, newspaper reports etc. Some of this work is challenging and difficult but mostly it is tedious and repetitive and requires consistency and accuracy. It is becoming difficult for professional translators to meet the increasing demands of translation. In such a situation the machine translation can be used as a substitute. This paper offers a brief but condensed overview of Machine Translation (MT). Through the following points: History of MT, Architectures of MT, Types of MT, and evaluation of M T.

Ouledali O.,University of Adrar | Meroufel A.,University Djilali Liabes
Energy Procedia | Year: 2015

In this article, we present the strategy of the direct Torque control (DTC) of the permanent magnets synchronous machine (PMSM) with fuzzy comparator in controlled by the technique SVM (Space Vector Modulation). This method of control allows reducing the fluctuations of the torque and of the flux also in the low speed contrary with control of the classical DTC where the frequency of switching is incontrollable. Simulations results obtained allow demonstrate the performances of this command especially in the behavior of the couple and the flux. © 2015 The Authors. Published by Elsevier Ltd.

Loading University of Adrar collaborators
Loading University of Adrar collaborators