Performance Analysis of Publish/Subscribe Systems

The Desktop Grid offers solutions to overcome several challenges and to answer increasingly needs of scientific computing. Its technology consists mainly in exploiting resources, geographically dispersed, to treat complex applications needing big power of calculation and/or important storage capacity. However, as resources number increases, the need for scalability, self-organisation, dynamic reconfigurations, decentralisation and performance becomes more and more essential. Since such properties are exhibited by P2P systems, the convergence of grid computing and P2P computing seems natural. In this context, this paper evaluates the scalability and performance of P2P tools for discovering and registering services. Three protocols are used for this purpose: Bonjour, Avahi and Free-Pastry. We have studied the behaviour of theses protocols related to two criteria: the elapsed time for registrations services and the needed time to discover new services. Our aim is to analyse these results in order to choose the best protocol we can use in order to create a decentralised middleware for desktop grid

Une complication musculaire rarissime de l’hémophilie: la myosite ossifiante

La myosite ossifiante circonscrite est une affection bénigne caractérisée par une prolifération hétérotopique d'os dans les tissus mous. Elle survient généralement chez des adolescents ou de jeunes adultes. De très rares cas ont été décrits chez les enfants. Son étiopathogénie n'est pas claire, il semble toutefois qu'un foyer de nécrose musculaire ou un hématome puissent être à l'origine de la lésion. Les sièges les plus fréquents sont le quadriceps et le biceps brachial. Nous présentons le cas d'un patient âgé de vingt ans, aux antécédents d'hémophilie A, admis dans notre service de Médecine Physique et de Réadaptation Fonctionnelle pour prise en charge d'une limitation de la mobilité des deux hanches. L'histoire remonte à un an où le patient a présenté suite à une chute de sa propre hauteur avec réception sur les hanches une douleur et une tuméfaction à leur niveau. L'évolution était marquée par l'installation d'une limitation de la mobilité des deux hanches responsable d'une gêne fonctionnelle et d'une réduction du périmètre de marche. L'examen clinique objectivait une limitation douloureuse de la mobilité des hanches sans autre signe accompagnateur. Les radiographies standards (A, B,C) et le scanner du bassin (D, E) ont montré une ossification musculaire autour des deux hanches, aspect compatible avec une myosite ossifiante progressive des muscles carrés fémoraux des deux côtés et du jumeau inférieur droit. Une intervention chirurgicale a été proposée mais refusée par le patient. Il a alors bénéficié d'un traitement médical et de rééducation à visée antalgique. L'évolution était marquée par une légère amélioration fonctionnelle.Pan African Medical Journal 2015; 2

Cerebral tuberculoma: an entity not to ignore

Cerebral tuberculomas are a rare and serious form of tuberculosis due to the haematogenous spread of Mycobacterium Tuberculosis. Symptoms and radiologic features are nonspecific, leading sometimes to misdiagnosis. We report the case of a 60-year-old male, with a history of diffuse bilateral infiltrative pulmonary disease at the stage of fibrosis, he made two generalized seizures associated with occipital headaches. CT scan showed a left frontal tumor, calcified lesion with edema around it. The patient was put under Depakine and corticosteroids. The evolution is marked by the occurrence of new seizures associated with heaviness of the right arm. Brain MRI showed a left posterior peripheral frontal meningioma with intralesional bleeding and significant edema around it with mass effect on the ipsilateral lateral ventricle. The patient was operated and the tumor was removed. In postoperative there was a Broca's aphasia with right hemiplegia. Pathological anatomical examination of the surgical specimen found a cerebromeningeal Granuloma with caseous necrosis in its pseudo tumor presentation (tuberculoma). The thoraco abdominal scan did not show any other tuberculosis lesions. The patient started antituberculosis treatment with 4 drugs (HRZE) for 2 months, followed by maintenance therapy (HR).The evolution was marked by the persistence of a right hemiplegia with Broca's aphasia. The patient was brought out in a wheelchair with functional rehabilitation sessions. The Pan African Medical Journal 2016;2

Towards Sign language recognition system in Human-Computer interactions

This paper presents a modeling approach for Sign language recognition which is introduced through a dialogue between deaf people and signing avatar. By this modeling approach, the system can be configurable as the scenario and the vocabulary can be modified or changed. Tow important elements are included to these modeling: the context and the prediction. The objective is to improve the reliability of sign language recognition system compared to the classic systems which generally do not use semantic concept

LIFESTYLE FACTORS AND MENTAL HEALTH

A number of lifestyle factors have been recognised to play an important role in positively modifying medical and psychiatric diseases and their associated morbidity and mortality. These include, eating healthy food, greater physical activity, cessation of smoking, avoidance of alcohol and illicit substances. Additional lifestyle factors for healthy living include, safe and peaceful environment, optimal sleep, de-stressing and enjoyable activities, social connections/support and healthy mental activities. Physicians from the ancient times, through the middle ages to the early 20th century have recommended adoption of healthy lifestyle factors such as diet and exercise to manage medical and psychiatric disorders without really understanding their scientific basis. In this short paper, we discuss the important role lifestyle factors play in morbidity and mortality related to many important and common medical and psychiatric diseases. We explore how and if positively modifying lifestyle factors can help to improve and or prevent medical and psychiatric disorders with particular emphasis on food, diet and exercise

Grid’5000 Based Large Scale OCR Using the DTW Algorithm: Case of the Arabic Cursive Writing

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