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Search Results: 1 - 10 of 73 matches for " Moutaz Benali "
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Investigating the Use of Combined Hydrogen, Heat and Power System for Omar AL-Mukhtar University Campus  [PDF]
Moutaz Benali, Tarek Hamad, Ahmad Belkhair, Yousif Hamad
Advances in Biological Chemistry (ABC) , 2019, DOI: 10.4236/abc.2019.91003
Abstract: This paper investigates the use of a combined hydrogen, heat, and power (CHHP) system for Omar Al-Mukhtar University campus using local resources. Based on previous local resource assessment studies, the hydrogen team of Omar AL-Mukhtar University (OMU) selected the fuelcell energy DFC4000TM unit. This study shows that the CHHP system can provide electricity to power the university campus, thermal energy for heating the anaerobic digester, and hydrogen for transportation, back-up power and other needs. Consequently, using the alternative fuels and renewable energy resources for OMU campus can lower fossil fuel consumption and, therefore, greenhouse gas emissions (GHG).
The Hydrogen Energy Potential of Solid Waste: A Case Study of Misrata City  [PDF]
Moutaz Benali, Tarek Hamad, Yousif Hamad, Ahmad Belkhair
Advances in Biological Chemistry (ABC) , 2019, DOI: 10.4236/abc.2019.92004
Abstract: This study presents an overview on solid waste that can be used as a source of bioenergy in Misrata including municipal solid waste (MSW), industrial solid waste (ISW), and healthcare solid waste (HSW) as biomass sources. The management of solid waste and valorization is based on an understanding of MSW’s and HSW’s composition and physicochemical characteristics. Of MSW’s, the results show that organic matter represents 59% of waste, followed by paper-cardboard 12%, miscellaneous 10%, plastic 8%, metals 7% and glass 4%. While HSW comprised of 72% general healthcare waste (non-risk) and 28% hazardous waste. The average general waste composition was: 38% organic, 24% plastics, and 20% paper. The potential of hydrogen energy produced from biogas in Misrata including MSW, and other organic feedstock such as food and kitchen waste, animal wastes, clover and reeds, wheat residues, barley residues, HSW and sewage waste as biomass sources. The total potential hydrogen output is estimated to be around 10,265 tons per year.
Experimental Study of Biogas Production from Cow Dung as an Alternative for Fossil Fuels  [PDF]
Moutaz Benali, Tarek Hamad, Yousif Hamad
Journal of Sustainable Bioenergy Systems (JSBS) , 2019, DOI: 10.4236/jsbs.2019.93007
Abstract: To treat the problem of fossil fuel usage and greenhouse gas emissions, biogas is considered a potential source of clean renewable energy. The aim of the work is to analyze the amount of biogas and ph from cow dung when an anaerobic digester operates in the mesophilic mode. In this study is presented the experimental investigation of biogas production from cow dung as an alternative energy resource. This is work using an 18 Liters capacity plastic as prototype biogas plant, plant to inspect the anaerobic digestion in producing biogas. The digester was batch operated and daily gas produced from the plant was observed for 30 days. The digester was fed within the ratio of 1:1 of dung to water respectively. The operating temperatures of the digester were maintained within mesophilic conditions. The Biogas production from cow dung fluctuates from the first day to the thirtieth day between 0 and 340 ml. The pH of cow dung is gradual reduction within the retention period.
A production model for a flexible production system and products with short selling season
Moutaz Khouja,Abraham Mehrez
Advances in Decision Sciences , 2005, DOI: 10.1155/jamds.2005.213
Abstract: We address a practical problem faced by many firms. The problem is deciding on the production levels for a product that has a very short selling season. The firm has a full period to produce and meet a lumpy demand which occurs at the end of the period. The product is no longer demanded after the end of the period. A constant production rate which minimizes average unit cost may increase holding costs. Varying the production rate at discrete points in time may increase production costs but may also decrease holding costs. In addition, allowing changes in the production rate enables the incorporation of forecast revisions into the production plan. Therefore, the best production plan depends on the flexibility of the production system and on the holding cost. In this paper, we formulate and solve a model of this production planning problem. Two models are developed to deal with two types of the average unit cost function. Numerical examples are used to illustrate the results of the model.
Les problèmes de la catégorisation textuelle : entre fondements théoriques et fondements structurels
Abdelkader Benali
Synergies Algerie , 2012,
Abstract: La linguistique textuelle n’a cessé de se pencher sur le problème de catégorisation des textes sans parvenir à ce jour à l’identification de critères communs. En effet, à des fins d’enseignement, et face à l’hétérogénéité constitutive de toute production textuelle, la nécessité de classer les textes selon la forme, leur composition, leur l’organisation et leur structuration, s’impose impérativement. C’est pourquoi notre article, issu de travaux de recherches en linguistique textuelle, se veut un balayage sur certains aspects théoriques et sur leurs soubassements référentiels, concilié aux aspects structurels permettant une réelle typologisation textuelle.
Phonétisme et Ludisme dans l’acte d’auto-apprentissage
Benali Souad
Synergies Algerie , 2007,
Abstract: Il est très important d’enseigner et d’apprendre la prononciation dans les classes de langues secondes et surtout étrangères. Cette modeste ré exion propose à partir d’une ré exion sur la pertinence de la phonétique (prosodie et phonématique) dans l’apprentissage d’une langue d’appréhender la place et les formes de cet enseignement- apprentissage et de ce qu’il est convenu d’appeler la correction phonétique à partir d’activités et de jeux de prononciation (ludisme), aussi d’étudier et d’élaborer des activités et des exercices permettant de mener à bien ces objectifs.
Du cri à l’écrit … l’écriture une stratégie de dépassement de soi: le cas d’Amélie Nothomb
Benali Souad
m@gm@ , 2010,
Abstract: Née au japon, Amélie Nothomb y passe les cinq premières années de sa vie, dont elle restera profondément marquée linguistiquement et culturellement. (...) De sa vie à Bruxelles, et de son cursus universitaire, elle ne cache nullement ses douloureux souvenirs d’être incompris et rejeté, se retrouvant toujours confronté à une mentalité qui lui était inconnue. Toute cette civilisation occidentale à laquelle elle est censée appartenir, et l’orientale, berceau de son enfance et abreuvoir de son adolescence. Ce fut la collision des deux civilisations diamétralement opposées; elle dira à propos de ce choc socioculturel et civilisationnel.
Dubigeon Olivier, 2002, Mettre en pratique le développement durable. Quels processus pour l’entreprise responsable ?, Paris, éd. Village Mondial
Amandine Benali
Développement Durable et Territoires , 2005,
Abstract: Dans son ouvrage, Olivier Dubigeon propose aux dirigeants d’entreprises une méthodologie leur permettant de s’orienter vers une responsabilité globale . Ingénieur des Arts et Métiers, dipl mé en management et titulaire d’un troisième cycle en écodéveloppement, il a d’abord travaillé auprès des collectivités territoriales, avant de diriger une entreprise, et enfin d’être employé par un groupe industriel du secteur de l’énergie comme responsable de l’ingénierie et de la valorisation du dével...
Agent-Based Simulation for Real-Time Schedulers
Moutaz Saleh,Zulaiha Ali Othman
Research Journal of Applied Sciences , 2012,
Abstract: Since several years, communication networks have known a surprising growth. The increased number of users, the consequent increase of traffic and the request for new services involve the development of new technologies and the deployment of high throughput networks. Networking technology has correspondingly grown to meet the diverse needs of applications and network administration. In response to the complexity of communication networks, simulation was and remains the only way to evaluate network performance. Unfortunately, traditional simulation methods are not adapted to all networks such as networks with quality of service and networks with dynamic aspect. To overcome this limitation, a new method to simulate dynamic networks based on multi-agents simulation and behavioral approach had been proposed. In this study, we present an adaptive approach to schedule real-time network traffic using the agent based simulation concept. The study introduces an Adaptive Real-Time Agent Scheduler (ARTAS) architecture and agent model as basis for scheduling real-time packet networks.
Hierarchical Diff-EDF: An Agent Based Scheduler for Heterogeneous Real-Time Packet Networks
Moutaz Saleh,Zulaiha Ali Othman
International Journal of Soft Computing , 2012,
Abstract: Packet networks are currently enabling the integration of heterogeneous traffic with a wide range of characteristics that extend from video traffic with stringent QoS requirements to best-effort traffic requiring no guarantees. QoS guarantees can be provided in packet networks by the use of proper packet scheduling algorithms. Similar to the trends of computer revolution, many scheduling algorithms have been proposed to meet this goal. The First-Come-First-Served (FCFS), which is mostly used in conventional networks, has been widely adopted for best-effort traffic. In addition, many scheduling algorithms have also been proposed to provide different schemes of QoS guarantees. Among which include the Earliest Deadline First (EDF) and the Differentiated-EDF (Diff-EDF). In this study, we propose a new priority assignment scheduling algorithm, Hierarchical Diff-EDF, which can meet the real-time needs while continuing to provide best effort service over heterogeneous real-time network traffic. The Hierarchical Diff-EDF service meets the flow miss rate requirements through the combination of single step hierarchal scheduling for the different network flows (video, audio and text) and the admission control mechanism that detects the overload conditions to modify packets` priorities. The implementation of this scheduler is based on the multi-agent simulation that takes the inspiration from object-oriented programming. The implementation itself is aimed to the construction of a set of elements which, when fully elaborated, define an agent system specification. When evaluating our proposed scheduler, it was extremely obvious that the Hierarchical Diff-EDF scheduler performs much better than both EDF and Diff-EDF schedulers.
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