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Joint Routing and Admission Control in Wireless Mesh Network

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International Journal of Communications, Network and System Sciences 2016年第8期9卷 311-325页

作者： Fawaz A. Khasawneh abderrahmane Benmimoune Michel Kadoch Department of Electrical Engineering école de Technologie Supérieure (ETS)-University of Quebec Montreal Canada

Wireless Mesh Network is a promising technology with many challenges yet to be addressed. Novel and efficient algorithms need to be developed for routing and admission control with the objective to increase the acceptance ratio of new calls without affecting the Quality of Service (QoS) of the existing calls and to maintain the QoS level provided for the mobile calls. In this paper, a novel Markov Decision-based Admission Control and Routing (MDACR) algorithm is proposed. The MDACR algorithm finds a near optimal solution using the value iteration method. To increase the admission rate for both types of calls, a multi-homing admission and routing algorithm for handoff and new calls is proposed. This algorithm associates the user with two different access points which is beneficial in a highly congested network and proposes a new routing metric to assure seamless handoff in the network. Our proposed algorithm outperforms other algorithms in the literature in terms of handoff delay, blocking probability, and number of hard handoff.

关键词： Wireless Mesh Network Markov Decision Process Multi-Homing Admission Control Routing

Dynamic Detection of Reinforced Concrete Bridge Damage by Finite Element Model Updating

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Journal of Mechanics Engineering and Automation 2014年第1期4卷 40-45页

作者： Mohammed Lamine Moussaoui Mohamed Chabaat abderrahmane Kibboua Faculty of Mechanical and Chemical Engineering University of Sciences and Technology Houari Boumedien Faculty of Civil Engineering University of Sciences and Technology Houari Boumediene National Earthquake Engineering Research Center (CGS)

The present work consists of dynamic detection of damages in reinforced concrete bridges by using a MMUM （mathematical model updating method） from incomplete test data. A well suited finite element model of a repaired bridge is carried out. The diagnosis enables us to locate and detect the damage in a reinforced concrete bridge. Thus, developments of analytical predictions have been checked by modal testing techniques. Besides, the FTCS （finite time centered space） scheme is developed to solve the set of equations which can easily handle finite element matrices of a bridge model. It is shown in this study that the method is applied to detect damages as well as existing cracks in real time of a repaired bridge. To check the efficiency of the method, the repaired bridge of OuedOumazer in Algeria has been selected. It is proven that identification methods have been able to detect the exact location of damage areas to be corrected avoiding the inaccuracy from the finite element model for the mass, stiffness and loading.

关键词： Bridges damage detection MMUM finite elements FTCS correlation.

Note on the vegetation of the mounts of tlemcen (Western Algeria): Floristic and phytoecological aspects

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Open Journal of Ecology 2013年第5期3卷 370-381页

作者： Brahim Babali abderrahmane Hasnaoui Nadjat Medjati Mohamed Bouazza Laboratory of Ecology and Management of the Natural Ecosystems Department of ecology and environment Aboubakr Belkaid University Tlemcen Algeria

Of the four national hunting reserves in Algeria, the Mounts of Tlemcen Moutas reserve http://***,characterized by a large area, reliefs and a specific climate, implies significant floristic and faunistic richness. Currently, the coexistence of species, such asQuercus fagineasubsp. tlemcenensis(DC.) M.,Lonicera implexaL., Ruscus aculeatusL., indicates a forest dominant ecological atmosphere, although the region has experienced repeated fires during the 90’s. In this research, a phytoecologicaland syntaxonomical analysis is obvious. More than 300 species have been inventoried and indexed in more than 70 families and this shows the importance of phyto-diversity of the studiedregion. In the analysis of the phyto-ecological parameters, we could notice a regression of the vegetal cover in its diversity.

关键词： Biodiversity Floristic inventory Phytoecological Anthropozoological action Climate Moutas Tlemcen

含庚型肝炎病毒E2基因片段质粒DNA能诱发相当强烈的体液免疫应答(英文)

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生物工程学报 2004年第5期20卷 683-688页

作者： Fethia Ben Yebdri abderrahmane AAZAZ 叶凯马辉文童立恒武汉大学药学院武汉430072 武汉生物技术研究开发中心武汉430030

研究了庚型肝炎病毒E2 (HGVE2 )基因片段作为DNA疫苗的可行性。将来自于质粒pThioHis E2编码HGVE2的基因片段 (5 5 9bp)亚克隆到质粒pCMV S中 ,使之和HBsAg基因位于同一阅读框 ,形成重组质粒pCMV S E2。用纯化的质粒pCMV S E2DNA注射到... 详细信息

研究了庚型肝炎病毒E2 (HGVE2 )基因片段作为DNA疫苗的可行性。将来自于质粒pThioHis E2编码HGVE2的基因片段 (5 5 9bp)亚克隆到质粒pCMV S中 ,使之和HBsAg基因位于同一阅读框 ,形成重组质粒pCMV S E2。用纯化的质粒pCMV S E2DNA注射到昆明小鼠后腿四头肌中来免疫小鼠 ,同时用pCMV S作为对照。间隔 14天再加强一次免疫。在加强免疫后的第 8天眼眶取血。用E2 GST融合蛋白作为固定化抗原 ,通过ELISA检测受试小鼠的体液免疫应答。结果表明 ,用质粒pCMV S

关键词： DNA疫苗庚型肝炎病毒 E2 基因片段质粒DNA 体液免疫

Osteomyelitis of the pubis in a young athlete revealed by severe abdominal pain

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Open Journal of Pediatrics 2013年第4期3卷 291-293页

作者： Lamiae Chater Karima Atarraf Moulay abderrahmane Afifi Department of Pediatric Surgery CHU Hassan II Fez Morocco

Acute osteomyelitis is a common condition in children. Only early diagnosis prevents complications. The location at the pubic bones is very rare, even exceptional at the pubis symphis. We report a case of osteomyelitis of the pubis in a young athlete of 14 years old whose symptoms were discussing an acute abdomen, to illustrate the unusual clinical presentation, so as not to miss the diagnosis and avoid unnecessary laparotomy.

关键词： Osteomyelitis Pubis Childhood Athlete Acute Abdominal Pain

Primary hydatid cyst as a cause of pseudotumor of the buttock

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Open Journal of Pediatrics 2013年第3期3卷 204-207页

作者： Lamiae Chater Karima Atarraf Moulay abderrahmane Afifi Departement of Pediatric Surgery Centre Hospitalier Universitaire Hassan II Fez Morocco

Primary muscle hydatidosis is very rare, accounting for less than 1% of hydatid cyst locations, and the gluteus muscle location is exceptional. The objective of this study is to report an exceptional location of hydatid cyst of the gluteus muscle presented like a tumor in the buttock region. Magnetic resonance imaging (MRI) is helpful in diagnosis, it represents the best test for hydatid cysts of the soft parts. It is important to establish the diagnosis preoperatively in order to limit the risk of anaphylactic shock or dissemination in the event of puncture or accidental opening of the cyst during resection. The eradication of this disease is based on prophylaxis.

关键词： Hydatid Cysts Soft Tissue Echinococcosis Muscle Childhood

29% P<sub>2</sub>O<sub>5</sub>Phosphoric Acid Desulphation: Improving the Performance of the Unit of Concentration

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American Journal of Analytical Chemistry 2019年第3期10卷 65-75页

作者： abderrahmane Aboulhassane Abderrahim Najah El Idrissi Yassine Bounou Driss Zakaria Laboratory of Physical Chemistry of Materials (LPCM) Department of Chemistry Faculty of Science Choua&iuml b Doukkali University El Jadida Morocco

Clogging in the heat exchangers of the phosphoric acid concentration unit is a phenomenon which hinders the proper functioning of the installation. It results in the accumulation of undesirable solid deposits on the pipes and consequently a decrease of its performance. This deposit is mainly anhydrous or hemihydrate gypsum in addition to Na2SiF6. Phosphoric acid desulphation before its concentration step allows reducing this undesirable effect. Barium carbonate is used for the retention of sulphate ions using a simple experimental protocol which can easily be inserted into the phosphoric acid manufacturing. Four factors: quality of the phosphoric acid to be concentrated, amount of barium carbonate, temperature and time, were studied using design of experiment (DOE) methodology with two-level full factorial design strategy in order to assess their effects on desulphation. Only the first two factors have significant effects. Therefore, for effective sulphate removal, the validated statistical model (R2 = 99.96%) allows to predict the amount of barium carbonate to be used, depending on quality of the phosphoric acid to be concentrated and using the available temperature and time in the industrial process.

关键词： Phosphoric Acid Barium Carbonate Desulphation Protocol Modeling Full Factorial Design

A Rare Tumor in a Rare Location: Ganglioneuroma

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Surgical Science 2022年第6期13卷 294-299页

作者： Faisal El Mouhafid abderrahmane Hajoujji Ait Ali Abdelmounaime Aziz Zentar Department of Visceral Surgery Mohammed V Military Teaching Hospital Rabat Morocco

Ganglioneuroma is a rare benign tumor Neuronagliomas of the adrenal gland are a rare pathology. Therefore, this case will be of interest to urologists, surgeons, oncologists, and pathologists. Located in the adrenal gland (20%), along the sympathetic chain, and particularly in the posterior mediastinum (40%) and the retroperitoneum (30%). Ganglioneuroma poses a positive diagnostic and therapeutic problem. We report the case of a patient aged 48 admitted for pain in the right hypochondrium. He had no significant past medical or surgical history. On a physical examination, there were no noticeable findings except for mild tenderness and a mass on palpation. He underwent abdominal CT, which showed a relatively homogenous right adrenal tumor measuring. Endocrine work-up including urine catecholamine and cortisol levels was normal. Due to the tumor size and with consideration of the differential diagnosis of a malignant lesion, we elected to operate on the patient. Right adrenalectomy was performed, with no related complications. The final histopathologic report revealed adrenal ganglioneuroma. Although benign, the ganglioneuroma can present malignant aspects, in particular, CT scans and biological that can mislead the clinician, so histology remains the examination of choice for making the diagnosis.

关键词： Tumor Adrenal Glands Gangioneuroma

Study of Biodiversity Indices in Forest Formations of the Province of Saida （Algeria）

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Journal of Life Sciences 2014年第3期8卷 246-251页

作者： Mohamed Terras abderrahmane Labani Abdelkrim Berroukche Jamel Anteur Abelkrim Kefifa Department of Biology University Moulay Tahar Saida 2000 Algeria

Biodiversity is a multidimensional concept involving several scientific disciplines. The study of biodiversity allows to initiate a multidisciplinary analysis and ecological reading of an environmental problem. The objective of this study is the knowledge of plant biodiversity and risk factors affecting the plant diversity in forest formations of Saida province （Algeria）. Plant biodiversity is estimated at 77 species with 37 best represented families （Asteraceae, Lamiaceae and Fabaceae）. The geophytes dominate with a rate of 44.15%. Among the degradation factors that threaten the biodiversity in the study area, the forest fires, overgrazing and trampling by domestic animals was mentioned.

关键词： Plant biodiversity biological types Shannon index evenness forest fires overgrazing Saida Algeria.