نتایج جستجو برای: همپوشانی شاخص index overlay

تعداد نتایج: 479918  

Journal: :IEICE Transactions 2013
Kazuhito Matsuda Go Hasegawa Satoshi Kamei Masayuki Murata

Overlay routing is an application-level routing mechanism on overlay networks. Previous researches have revealed that the overlay routing can improve user-perceived performance. However, it may also generate traffic unintended by ISPs, incurring additional monetary cost. In addition, since ISPs and end users have their own objectives respectively regarding traffic routing, overlay routing must ...

2003
Thomas Fuhrmann

Formation of suitable overlay-network topologies that are able to reflect the structure of the underlying network-infrastructure, has rarely been addressed by peer-to-peer applications so far. Often, peer-to-peer protocols restrain to purely random formation of their overlay-network. This leads to a far from optimal performance of such peer-to-peer networks and ruthlessly wastes network resourc...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Huijuan Wang Javier Martin Hernandez Piet Van Mieghem

When transport in networks follows the shortest paths, the union of all shortest path trees G union or logical sum SPT can be regarded as the "transport overlay network." Overlay networks such as peer-to-peer networks or virtual private networks can be considered as a subgraph of G union or logical sum SPT. The traffic through the network is examined by the betweenness Bl of links in the overla...

Hossein Ghavami, Shahriar Shirvani Moghaddam,

Minimizing the outage probability and maximizing throughput are two important aspects in device to device (D2D) communications, which are greatly related to each other. In this paper, first, the exact formulas of the outage probability for D2D communications underlaying or overlaying cellular network are derived which jointly experience Additive White Gaussian Noise (AWGN) and Rayleigh multipat...

Water plays a vital role in the development of activities in an area. The surface water resources are inadequate to fulfill the water demand. Productivity through groundwater is quite high as compared to surface water, but groundwater resources have not yet been properly exploited. Keeping this view, the present study attempts to select and delineate various groundwater potential zones for the ...

ژورنال: :امداد و نجات 0
محمدجاسم شاهسونی mohammad jasem shahsavani نسرین شریفی nasrin sharifi حمیدرضا وارثی hamidreza varesi

مقدمه: امروزه افزایش جمعیت شهرها موجب افزایش نیاز به خدمات شهری شده است و در این میان نکتۀ حائز اهمیت، توزیع بهینۀ مراکز ارائه دهندۀ خدمات است. ایستگاه های آتش­نشانی از جمله عناصر و کاربری­های خدماتی اورژانسی شهرهاست که نقش مهم و حیاتی در حفاظت از جان و مال مردم در برابر حوادث مختلف به ویژه آتش سوزی­ها دارند. یکی از دل مشغولی های برنامه ریزان شهری در فضاهای شهری، طراحی و مکان یابی فضاهای خدماتی...

ژورنال: :مطالعات و پژوهش های شهری - منطقه ای 0
مهناز شجاع عراقی سیمین تولایی پرویز ضیائیان

برنامه ریزی پیش از وقوع بحران از مسائل مهمی است که امروزه پیش روی مدیران شهری به ویژه در حوزه مدیریت بحران قرار دارد. با توجه به اینکه ایران از کشورهای بلاخیز دنیا به شمار می رود، لازم است مدیریت شهری قدرت و توانایی بالایی در مواجهه با حوادث ناگوار طبیعی داشته باشد و به منظور کاهش اثرات سوء بحران های شهری برای ارتقاء و گسترش توانایی های خود به طور مستمر تلاش نماید. در سال های اخیر احداث پایگاه ...

2009
Anwitaman Datta

Peer-to-Peer index structures distributed and managed over the planet, commonly known as structured overlays (e.g., Distributed Hash Tables) have been touted to play the role of a fundamental building block for internet-scale distributed systems. Traditional designs consider incremental or possibly even parallelized construction of a single overlay, which implicitly assumes global control and c...

Journal: :iranian journal of earth science 0
shayan ghodratabadi young researchers and elite club, south tehran branch, islamic azad university, tehran iran faranak feizi mining engineering dept., south tehran branch, islamic azad university, tehran iran

water plays a vital role in the development of activities in an area. the surface water resources are inadequate to fulfill the water demand. productivity through groundwater is quite high as compared to surface water, but groundwater resources have not yet been properly exploited. keeping this view, the present study attempts to select and delineate various groundwater potential zones for the ...

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