نتایج جستجو برای: networks

تعداد نتایج: 427580  

Journal: :jundishapur journal of microbiology 0
mohammad savari department of microbiology, medicine school, tehran university of medical sciences, tehran, ir iran soodabeh rostami infectious disease and tropical medicine research center, isfahan university of medical sciences, isfahan, ir iran alireza ekrami department of laboratory medical sciences, faculty of para medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran abbas bahador department of microbiology, medicine school, tehran university of medical sciences, tehran, ir iran; department of microbiology, medicine school, tehran university of medical sciences, tehran, ir iran. tel/fax: +98-2188955810

conclusions based on the presence of ta systems in the majority of p. aeruginosa isolates, these could be used as a novel target for antimicrobial therapy. results our results showed that in the 174 p. aeruginosa isolates, relbe and higba were universal, but parde was less prevalent. both of the flanking regions of the parde genes in all positive isolates were amplified. the flanking regions of...

Journal: :journal of advances in computer research 2013
mina vajed khiavi shahram jamali sajjad jahanbakhsh gudakahriz

in this paper, we propose a scheme to improve existing ad-hoc on-demanddistance vector (aodv) routing protocol by discovering and maintaining multiplenon-overlapped routes. our routing protocol is a multipath version of aodvrouting protocol that considers only the disjoint path. due to non-overlappingamong paths, when a link breaks in the network, only one of paths is expired. thepresented rout...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2011
karimi-googhari, sh

accurate estimation of evaporation is important for design, planning and operation of water systems. in arid zones where water resources are scarce, the estimation of this loss becomes more interesting in the planning and management of irrigation practices. this paper investigates the ability of artificial neural networks (anns) technique to improve the accuracy of daily evaporation estimation....

Journal: :iranian journal of radiation research 0
p. abdolmaleki dept. of biophysics, tarbiat modarres university, tehran, iran m. yarmohammadi m. gity

background: we designed an algorithmic model based on the logistic regression analysis and a non-algorithmic model based on the artificial neural network (ann). materials and methods: the ability of these models was compared together in clinical application to differentiate malignant from benign breast tumors in a study group of 161 patients' records. each patient’s record consisted of 6 s...

سامی, تقی , شهرتاش, سید محمد , غلامی, احمد ,

The aging of insulating materials can be estimated by an electrical breakdown occurring in electrical components so that the relationship between lifetime, failure probability and reliability of electrical components may be studied using the life models in high voltage cables networks. In last decades with attention to higher features as electrical, thermal, mechanical characteristic, widely cr...

Considering the high costs of the implementation and maintenance of gas distribution networks in urban areas, optimal design of such networks is vital. Today, urban gas networks are implemented within a tree structure. These networks receive gas from City Gate Stations (CGS) and deliver it to the consumers. This study presents a comprehensive model based on Mixed Integer Nonlinear Programming (...

ژورنال: رویش روانشناسی 2019
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Social networks are one of the most popular branches of virtual networks that can have a great impact on people's personal and social life. The aim of this study was to investigate the role of loneliness and personality characteristics in university students' dependence on social networks. The method of this research was of correlational type and sampling method was proportionate stratified sam...

M Aliakbar-Golkar M Sedghi

Conventional passive distribution networks are changing to modern active distribution networks which are not radial. Conventional load flow methods should be modified for new distribution networks analysis. In modern distribution networks distributed generation (DG) units are embedded with conventional and/or renewable resources. DG units are generally modeled as PV or PQ nodes which inject ...

Journal: :روش های عددی در مهندسی (استقلال) 0
سید محمدتقی فاطمی قمی و مسعود ربانی s. m. t. fatemi ghomi m. rabbani

considering the network structure is one of the new approaches in studying stochastic pert networks (spn). in this paper, planar networks are studied as a special class of networks. two structural reducible mechanisms titled arc contraction and deletion are developed to convert any planar network to a series-parallel network structure. in series-parallel spn, the completion time distribution fu...

Introduction: Internet social networks as a place for the different segments of society, especially the youth have become. The aim of this study was survey of social networking usage and its relationship with the study status of students of Ilam universities 2015. Material and Methods: In this cross-sectional study, 400 students of Ilam universities were selected by simple random sampling me...

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