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1000 tulosta hakusanalla Mohamed A. El-Reedy

A Framework and Methodology for Managing Quality of Web Services
Revision with unchanged content. The wide adoption of XML and related technologies led to the rise of a new paradigm for applications development. Web Services: WS, extend the traditional role of the Web for a stronger support for business to business interactions. The WS paradigm is based on the exposure of WS functionality via an interface description which has the potential of making WS available for various kinds of end-users. Another very promising future of WS consists of the potential of composing basic WS to produce more complex WS with a wide range of functionalities. The SOA was proposed to position the key players in this new paradigm where main operations will be executed using technologies such as SOAP, WSDL, and UDDI. The management of Quality of Web services: QoWS, as integral part of WS management will play an important role for the success of this paradigm. In this work, we investigate the management of QoWS for basic and composite WS by taking it into consideration as part of a systematic process for the development of WS. We studied the development of a new framework that intends to capture major management operations and the necessary extensions of SOA to support QoWS management.
A study of the piled raft foundation behaviour

A study of the piled raft foundation behaviour

Mohamed Mansour; Adel Akl

Lap Lambert Academic Publishing
2013
pokkari
In the recent decades, a new concept has evolved for the analysis and design of piled foundation which is the piled raft concept. This concept takes into consideration the proportion of load transmitted directly by the raft contact pressure in the piled raft foundation system. In the current work, a nonlinear three dimensional finite difference analysis was carried out to model several piled raft problems. Firstly, a back-analysis was made for two case studies to check the validity of the numerical modelling procedure performed by the author. Afterwards, a comprehensive parametric study was performed on a hypothetical square piled raft over three clay soil profiles with different degrees of stiffness. The variation was made in number of piles, length of piles and distribution of piles over the raft area. The variables were studied in terms of their effect upon the average settlement, differential settlement, load sharing between piles and raft and the piled raft working stress. The concluded observations from the parametric study can help the engineers in taking a logical path in an iterative design process for a piled raft foundation.
Contribution à la séparation aveugle de sources
Dans cette th se, nous proposons un nouvel algorithme de s paration aveugle de sources, bas sur l'optimisation de l'information mutuelle sous contraintes. Le probl me d'optimisation sous contraintes est r solu par passage au probl me dual. L'estimateur propos du gradient stochastique utilise l'estimation des densit's par maximum de vraisemblance dans des mod les de lois exponentielles choisis par minimisation du crit re AIC. Ensuite, la m thode a t g n ralis e l'ensemble des divergences entre densit's de probabilit . Nous avons montr que l'algorithme utilisant la divergence particuli re de Hellinger a de bonnes propri t's d'effcacit et robustesse en pr sence du bruit en comparaison avec l'information mutuelle. Dans le cadre de signaux cyclostationnaires, les m thodes pr c dentes de s paration ont t adapt es en utilisant des statistiques du second ordre. Nous illustrons les performances des algorithmes propos's pour des signaux simul's et pour des signaux r els issus de machines tournantes.
Design of a solar PV energy system for Wajir town, Wajir county, Kenya

Design of a solar PV energy system for Wajir town, Wajir county, Kenya

Mohamed Diyad Elmi

LAP Lambert Academic Publishing
2018
pokkari
When I had the opportunity to pursue a degree in Masters of Science in Renewable Energy engineering Technology at the Jomo Kenyatta University of Agriculture and Technology, Kenya, with majorly concentration on Geothermal, Solar, Wind, Biomass, Hybrid, Hydro Energy and Energy Economics, Bachelor of Science in Energy and environmental technology and diploma in electrical and electronics engineering, it exposed me to a wide range of interesting courses in it, provided me with answers to my childhood questions such as to solve the issue of electricity in my home town. Situated in the north-eastern part of Kenya with population of 0.7 million, Wajir county receives about 300 sunny days in a year. The unique weather profile favors the adoption of the solar energy technology. Therefore a comprehensive and effective approach of designing, assessing, analyzing and determining economic viability of solar energy availability in Wajir town was done.
A doença da sarna comum da batata e seu controle

A doença da sarna comum da batata e seu controle

Mohamed Housny; Kamal Abo-Elyousr; Moahmoud Asran and Farag Saead

Novas Edicoes Academicas
2020
pokkari
Este trabalho visou isolar e identificar o pat geno da sarna comum, estudar a varia o entre os isolados do pat geno pela produ o de algumas enzimas, virul ncia do gene, efeito de certos fungicidas, antibi ticos e bioagentes sobre o pat geno em condi es in vivo e in vitro, bem como a rea o de algumas cultivares de batata contra a sarna comum, e o papel dos constituintes na sua resist ncia sarna comum bacteriana.