نتایج جستجو برای: distribution networks

تعداد نتایج: 1007197  

ابراهیمی, عادل, احمدیان, محمد, شیوایی, مجتبی, قبادی, مهدی,

In this paper, a real time method is introduced for distribution networks reactive power control in order to co-ordinate all equipments contributing to improved voltage profile and reduced losses and costs. Imperialist Competitive Algorithm (ICA) is also employed for optimization purposes. The proposed method was implemented on a part of Tehran distribution network, which confirmed its effectiv...

Journal: :مدیریت آب و آبیاری 0
میناسادات سیدجواد کارشناس ارشد مهندسی آبیاری و زهکشی، گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران محمود مشعل دانشیار گروه مهندسی آبیاری و زهکشی، مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران

according to the low efficiency of irrigation and drainage networks and water distribution in iran, simulating water flow and sensitivity structures and networks is considered as a new approach to evaluate the performance hydroelectric projects in the country. in this study, because of reduced water supply and distribution, especially in downstream irrigation and drainage networks varamin to ev...

Journal: :محیط شناسی 0
محمدرضا جلیلی قاضی زاده استادیار دانشکده عمران، آب و محیط زیست، دانشگاه شهید بهشتی ضیاالدین ایدی دانشجوی دکتری سازه های هیدرولیکی، دانشگاه رازی

extended abstract abstract pressure management is an effective method for water demand management. for evaluation of the effects of pressure changes on leakage level of water networks, the favad equation is usually used. however, in this equation, exponent of pressure parameter (n) needs to be determined. for estimation of n, either some information about the leak opening is necessary or networ...

2006
J. E. Yukich

We consider a family of long-range percolation models (Gp)p>0 on Zd allowing dependence between edges and having these connectivity properties for p ∈ (1/d,∞): (i) the degree distribution of vertices in Gp has a power law distribution, (ii) the graph distance between points x and y is bounded by a multiple of logpd logpd |x − y| with probability 1 − o(1), and (iii) an adversary can delete a rel...

2014
Richard H. Frenkiel

Data dissemination or diffusion service is the process of distributing a certain amount of information to the users such as vehicle drivers or mobile users especially in wireless networks. It also plays a significant role in numerous applications of Vehicular Ad hoc Networks (VANETs). Data Dissemination problem has been addressed by many researchers so far in many contexts. This paper presents ...

Journal: :I. J. Network Security 2005
Cheng-Chi Lee

In 2000, Lee and Chang proposed a user identification scheme with key distribution preserving anonymity for distributed computer networks. Recently, Wu and Hsu pointed out that there are two weaknesses in the LeeChang scheme. They further not only proposed a new scheme to remedy the security leaks of the Lee-Chang scheme, but also reduced computation complexities and communication cost as compa...

A Boussaha, R Makhloufi S Madani

This work consists in a numerically evaluation of elastic fields distribution, caused by intrinsic dislocation networks placed at a nanometric trilayers interfaces, in order to estimate their influence on the surface topology during heterostructure operation. The organization of nanostructures is ensured by the knowledge of different elastic fields caused by buried dislocation networks and calc...

In this paper, a self-healing approach for smart distribution network is presented based on Graph theory and cut sets. In the proposed Graph theory based approach, the upstream grid and all the existing microgrids are modeled as a common node after fault occurrence. Thereafter, the maneuvering lines which are in the cut sets are selected as the recovery path for alternatives networks by making ...

State estimation in the energy management center of active distribution networks has attracted many attentions. Considering an increase in complexity and real-time management of active distribution networks and knowing the network information at each time instant are necessary. This article presents a two-step multi-area state estimation method in balanced active distribution networks. The prop...

Journal: :journal of advances in computer research 2016
mona mojtabaee morteza romoozi hamideh babaei

content discovery is one of the fundamental issues that determines the architecture and performance of content distribution networks based on peer-to-peer (p2p) networks. to administrate the costs and discoveries, peers of a p2p network communicate with each other by one or more overlay layers. the condition of node’s relations in overlay networks, have a great impact in efficiency of networks....

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