نتایج جستجو برای: hierarchical networks

تعداد نتایج: 510144  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

در این پایان نامه سعی داریم قابلیت بقا و اطمینان را برای شبکه های سلسله مراتبی بررسی کرده و چند معیار را برای ارزیابی این شبکه ها مطرح کنیم. دو روش پیشنهاد شده برای ارتقاء قابلیت بقای این دسته از شبکه ها را معرفی کرده و آن ها را با یکدیگر مقایسه می کنیم. با استفاده از یک شاخص توپولوژیکی، معیاری جدید برای مقایسه قابلیت بقای شبکه های سلسله مراتبی بهبود یافته ارائه می کنیم. همچنین یک روش جدید برای...

Hashem Mahlooji Hassan Shavandi

There exist various service systems that have hierarchical structure. In hierarchical service networks, facilities at different levels provide different types of services. For example, in health care systems, general centers provide low-level services such as primary health care services, while the specialized hospitals provide high-level services. Because of demand congestion in service networ...

Energy constraint is the biggest challenge in wireless sensor networks because the power supply of each sensor node is a battery that is not rechargeable or replaceable due to the applications of these networks. One of the successful methods for saving energy in these networks is clustering. It has caused that cluster-based routing algorithms are successful routing algorithm for these networks....

Journal: :Regional Statistics 2013

Journal: :Journal of Physics A: Mathematical and Theoretical 2016

Journal: :Computers & Chemical Engineering 1992

In this paper, a complete review of published researches about hierarchical facility location and hub network problems is presented. Hierarchical network is a system where facilities with different service levels interact in a top-down way or vice versa. In Hierarchical systems, service levels are composed of different facilities. Published papers from (1970) to (2015) have been studied and a c...

Journal: :razavi international journal of medicine 0
ghasem sadeghi bajestani department of biomedical engineering, science and research branch, islamic azad university, tehran, ir iran; department of biomedical engineering, science and research branch, islamic azad university, tehran, ir iran ali sheikhani department of biomedical engineering, science and research branch, islamic azad university, tehran, ir iran mohammad reza hashemi golpayegani department of biomedical engineering, amir kabir university of technology, tehran, ir iran farah ashrafzadeh paediatric neurology division, qaem hospital, mashhad university of medical sciences, mashhad, ir iran paria hebrani department of paediatrics, dr sheikh paediatric hospital, mashhad university of medical sciences, ir iran

conclusions the most effected parts in asd are lateral connections of hmasd. two-sided connections which are completely symmetric become more active, and cause extra synchronization. on the other hand, due to special characteristic of two-sided connections and their ability to simulate the same phased dynamics, they cause unnatural asymmetry in children’s eeg signal. these results are consisten...

Journal: :Computer Graphics Forum 2011

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