Hemam S.M.,University of Khenchela |
Hioual O.,University of Khenchela
Proceedings of 2016 International Conference on Cloud Computing Technologies and Applications, CloudTech 2016 | Year: 2016
In this paper, we investigate the cloud service selection model by taking into account the load-balancing across different clouds. Indeed, a number of service providers offer similar services at various prices and performance levels which made a real decision-making problem in a service selection. This problem occurs in a multi cloud environment when we need to select a service by taking into consideration the preference of users (minimizing both cost and response time) and the requirement of the system (load balancing between clouds). In this work, we present our solution which allows to select a cloud service by taking into account the preferences of the user and also which allows to balance the load between different clouds. The proposed solution is based on the MCDA: Multi Criteria Decision Analysis and the Markov Chain Model. © 2016 IEEE.
Kadri O.,University of Khenchela |
Mouss L.H.,University of Batna
Academic Journal of Manufacturing Engineering | Year: 2017
The aim of this paper is to propose a new fault diagnosis method for complex manufacturing system. We have used an artificial neural network (ANN) and an Ant Colony Optimization (ACO) algorithm to diagnosis the condition monitoring of a rotary cement kiln. The Ant Colony algorithm can found a small features subset from the original real time signals and the Extreme Learning Machine (ELM) enables a good accuracy with a limiting learning time. Many benchmark datasets have used to evaluate the performances of our algorithm and the result indicates its higher efficiency and effectiveness comparing to other methods.
Belkoum N.,University of Khenchela |
Houha B.,University of Khenchela
Journal of Materials and Environmental Science | Year: 2017
The upper plains of eastern Algeria are bordered to the south by Aures mountains culminating at 2328 m on Chelia moutain. The water springs of Chelia, initially is weakly mineralized, can become salty by interaction with rocks of Chemora basin and successive evaporation. The salt concentrations can increase until the precipitation of evaporates. The main places of the formation of the solid salts are the irrigated agricultural soils, where evaporation reaches or exceeds the inflow of continental water. Chemical water facies evolved from bicarbonate calcium and magnesium to sulphate calcium. The use of chemical and isotopic tools have shown that the origin of waters mineralization is linked to the interactions water-rock that occur along the flow in the reservoir, by dissolution and mineral precipitations, to the cations exchange and the pollution. The isotopic tool has demonstrated that the aquifer recharge is ensured by meteoric little evaporated waters, with altitudinal influence. © 2017, University of Mohammed Premier Oujda Morocco.
Aberkane S.,University of Khenchela
Malaysian Journal of Medical Sciences | Year: 2017
Background: Researchers lack a properly validated instrument to measure perceptions of chronic disease in Arabic language contexts. This study aimed to adapt and validate the Revised-Illness Perception Questionnaire (IPQ-R) for Arabic speaking chronic illness patients. Methods: A cross-sectional design was conducted to examine the psychometric properties of the adapted English version of the IPQ-R for Arabic speaking chronic illness patients. The study instrument was an Arabic version of the IPQ-R prepared through a translation process. The reliability and validity of the instrument were assessed using exploratory and confirmatory factor analysis and Cronbach’s alpha coefficient. Three hundred and sixteen participants (ages 16–79) from the Batna region in Algeria completed the IPQ-R. Results: A total of 316 (100%) patients responded to this study. Regarding internal consistency, Cronbach’s alpha a coefficient was consistently higher than 0.45. Several areas of fit were identified and substantial changes to the measurement model were made, such as the deletion of 22 items from the original 38 -item IPQ-R and two items from the original 18 causal items this accounted for 64.63% of the total variance, and the respecification of indicators had to be applied to achieve acceptable model fit. The final model consists of two sections: The 16– item Arabic IPQ-R, which had a good fit; (CMIN/Df = 1.30, P < 0.001, CFI = 0.93, RMSEA = 0.08, SRMR = 0.03), and was similar to the Arabic 16 causal items (CMIN/DF = 1.11, P < 0.001, CFI = 0.95, RMSEA = 0.080, SRMR = 0.02). Conclusion: The factor structure concurred with prior finding despite differences to the type of sample and cultural considerations that might explain these findings. Replication of this study in Algerian patients with specific illness, such as silicosis, breast cancer and multiple sclerosis. Further psychometric testing on other large samples is recommended. © Penerbit Universiti Sains Malaysia, 2017.
Hemam M.,University of Khenchela |
Hemam M.,University of Mentouri Constantine |
Boufaida Z.,University of Mentouri Constantine
International Journal of Reasoning-based Intelligent Systems | Year: 2011
Domain ontologies are intended to provide a commonly shared understanding among several user communities. Concepts and their relationships are used to explicitly model the realworld phenomena that are of interest to users of specific domain. In practice, a set of a specificdomain applications use different representations of the same real-world entity due to various viewpoints, context and specific interest. In this paper, we are interested in the problem of representing an ontology in heterogeneous organisation by taking into account different viewpoints and different terminologies of various users, groups or even communities in the organisation. Such ontology, called Multi-Viewpoints Ontology, allows heterogeneity and consensus in a heterogeneous organisation. So, our goal is to propose a Multi-Viewpoints Ontology Web Language, which is an extension of OWL-DL language, to allow the multiviewpoints ontologies representation for the Semantic Web. Copyright © 2011 Inderscience Enterprises Ltd.
Derouiche F.,University of Mentouri Constantine |
Derouiche F.,University of Khenchela |
Bole-Feysot C.,University of Rouen |
Naimi D.,University of Mentouri Constantine |
Coeffier M.,University of Rouen
Biochemical and Biophysical Research Communications | Year: 2014
Background and aims Hyperhomocysteinemia (HHcy) is associated with cardiovascular diseases and is thought to induce endogenous oxidative stress and causes many cellular damages. Proteasome that degrades oxidized and ubiquitinated proteins can regulate the cellular response to oxidative stress. We aimed to investigate whether hyperhomocysteinemia induces oxidative stress and alters proteasome function and composition in heart and aorta tissues of rat. Methods and results To create hyperhomocysteinemia, male Wistar rats (Pasteur Institute-Algiers) were received daily intraperitoneal injections of dl-homocysteine (0.6-1.2 μM/g body weight) for 3 weeks. Biomarkers of oxidative stress (malondialdehyde (MDA), protein carbonyl (PC), superoxide dismutase (SOD) and catalase (CAT)) were first measured by biochemical methods and tissue damages by histological sections. Proteasome activities were quantitated using fluorogenic synthetic peptides; ubiquitinated proteins and proteasome subunits expression were then evaluated by SDS PAGE and Western blot analysis. We showed increased MDA and PC but decreased SOD and CAT levels both in plasma, heart and aorta accompanied by histological changes. A significant decrease of proteasome activities was observed in heart, whereas proteasome activity was not affected in aorta. However proteasome composition was altered in both tissues, as the accumulation of ubiquitinated proteins. Conclusion Data demonstrated an alteration of the ubiquitin-proteasome system in hyperhomocysteinemia as a result of accumulating oxidized and ubiquitinated proteins in response to oxidative stress. Further studies must be conducted to better understanding mechanisms responsible of proteasome alterations in hyperhomocysteinemia. © 2014 Elsevier Inc. All rights reserved.
Djelloul A.,University of Khenchela |
Aida M.-S.,University of Mentouri Constantine |
Bougdira J.,CNRS Jean Lamour Institute
Journal of Luminescence | Year: 2010
Undoped and aluminum-doped zinc oxide (ZnO) thin films have been grown on polycrystalline α-alumina substrates by ultrasonic spray pyrolysis (USP) technique using zinc acetate dihydrate and aluminum chloride hexahydrate (Al source) dissolved in methanol, ethanol and deionized water. A number of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and photoluminescence (PL) were used to characterize the obtained ZnO thin films. It was seen that the orientation changed with increase in substrate temperature. During the ZnO deposition Zn source reacted with polycrystalline α-Al2O 3 substrate to form an intermediate ZnAl2O4 spinel layer. It has been interestingly found that the intensity of green emission at 2.48 eV remarkably increased when the obtained ZnO:Al films were deposited at 380 °C. The FTIR absorbance intensity of spectroscopic band at 447±6 cm-1 is very sensitive to oxygen sublattice disorder resulting from non-stoichiometry, which is consistent with the result of PL characterization. © 2010 Elsevier B.V. All rights reserved.
Bououden S.,University of Khenchela |
Chadli M.,University of Khenchela |
Allouani F.,University of Picardie Jules Verne |
Filali S.,University of Mentouri Constantine
International Journal of Innovative Computing, Information and Control | Year: 2013
This paper introduces a new approach for designing an adaptive fuzzy model predictive control (AFMPC) using the Particle Swarm Optimization (PSO) algorithm. The system to be controlled is modeled by a Takagi-Sugeno fuzzy inference system whose parameters are identified using recursive least square algorithm. These parameters are used to calculate the objective function based on predictive approach and structure of RST controller. The controller design methodology is formulated as an optimization problem solved by PSO algorithm to obtain the optimal future control. The approach was applied for controlling two non linear systems CSTR and Tank system. The results are en- couraging compared with those obtained using the Proportional Integral-Particle Swarm Optimization (PI-PSO) and adaptive fuzzy model predictive control (AFMPC). © 2013 ISSN 1349-4198.
Benounis M.,University of Khenchela |
Benounis M.,University of Guelma
Sensors and Actuators, B: Chemical | Year: 2015
A new phosphate-selective poly[vinylchloride-co-vinylacetate-co-vinylalcohol] membrane with Trioctyl-tin-chloride (Carrier I) and Methylenebis[dibromo(phenyl)stannane] (carrier II) were proposed to invert the Hofmeister behaviour and to form strong complexes with the hydrophilic target anion. Plasticizers effect and selectivities for phosphate over many common anions, such as nitrate, chloride, fluoride and bicarbonate, at pH 3.6 are studied for several membranes formulations. We show that the phosphate selectivity is better and comparable to required values for membranes based on tin compound plasticized with low dielectric constant solvent and the sensor exhibits a LOD of about 6.5 × 10-08 M with a linear response towards phosphate ion over a wide concentration range of 10-5-10-3 M. The response times and lifetime of copolymer-membranes-optodes were studied. The response times of the membranes with copolymer based on carriers I and II were 20 s and 40 s, when changing from 10-4 M phosphate to 10-3 M. The lifetime of the copolymer-based-membrane was higher than that of PVC-based-membrane with the same carrier and the optode is adequate for phosphate ion detection in real water. © 2015 Elsevier B.V. All rights reserved.
Boumaza A.,University of Khenchela |
Djelloul A.,University of Khenchela |
Guerrab F.,University of Khenchela
Powder Technology | Year: 2010
The specific signatures of α-Al2O3 powders by a combination of X-ray diffraction (Rietveld analysis), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermal analysis (TG-DTA) and cathodoluminescence (CL) were investigated. Thus, α-alumina was prepared by calcination of boehmite or gibbsite at 1573K for 24h. The size of α-alumina crystallites obtained using boehmite precursor was smaller than that obtained using gibbsite precursor. The difference in oxygen vacancies (F+-centers) amount between α-Al2O3 powder obtained by calcination of gibbsite and boehmite was confirmed by CL spectra. Furthermore, the Ti3+ emission at 1.71eV is absent in α-Al2O3 powder obtained by calcination of gibbsite. CL has been demonstrated as a possible method for differentiation between the various α-alumina powders. © 2010 Elsevier B.V.