نتایج جستجو برای: شبکه grid

تعداد نتایج: 119917  

Journal: :iranian journal of radiation research 0
k. ghazi-khanlou sani department of radiology, hamadan university of medical sciences, hamadan, iran m. mohammadi department of medical physics, hamadan university of medical sciences, hamadan, iran a. eskandarlo department of radiology, hamadan university of medical sciences, hamadan, iran h. gholam-hosseinian department of radiotherapy, mash-had university of medical sciences, mash-had, iran

background: in conventional radiation therapy, regarding normal tissue tolerance, the treatment of bulk tumors is one of the remaining challenges. grid radiation therapy (grt) is a technique to deliver high doses, approximately 15 – 20 gy per fraction, to several small volumes located in a large radiation field. this can be performed using a grid block. the current work has concentrated on the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده مهندسی برق و الکترونیک 1392

پایداری دینامیکی سیستم های قدرت بهم پیوسته از اهمیت زیادی برخوردار است. از جمله عواملی که پایداری این سیستم ها را تهدید می کند نوسانات الکترومکانیکی ژنراتورها می باشد. از طرفی مطالعه بهنگام و سریع این نوسانات یکی از وظایف ضروری مراکز کنترل شبکه قدرت می باشد تا در صورت پدید آمدن اغتشاشات ، ضمن بررسی پایداری سیستم ، سیگنالهای کنترلی مناسب جهت جلوگیری از ناپایداری ارسال نماید. در اکثر شبکه های قدر...

Two distinct redistribution grids - adaptation techniques, spring analogy and elliptic grid generator are applied to two-dimensional steady, inviscid, shocked flows, and the ability of each technique is examined and compared. Euler equations are solved base on Roe's Reimann solver approach to simulate supersonic flow around a sphere, transonic flow about an airfoil and supersonic flow in a symm...

Journal: : 2022

امروزه ورود به حوزه مدیریت کیفیت برای سازمان‌ها از اهمیت ویژه‌­ای برخوردار است. مدل­های تعالی سازمانی ابزاری است که را در این مسیر رهنمون می­‌کند. بدین منظور، ازجمله شبکه بانکی کشور، رویکردهای گوناگونی سازمان خود راستای تحقق ارزش‌های مدل­‌های استقرار می­کنند؛ اما محدودیت منابع موجود قبیل هزینه، نیروی انسانی، فرهنگ و غیره، تمامی رویکردها میسر نمی‌­سازد؛ ازاین‌رو مسئله اصلی کدام بیشترین تأثیر ارت...

Journal: :journal of advances in computer research 2013
sedigheh navaezadeh iman zangeneh mehnoosh vahebi

every year, with regard to rapid development of data, grid computing that is a kind of distributed computing system is that it has attracted the attention of most people and considerably taken into account. computing that cannot be done by huge computers can be performed by grid computing. if load balance is used, efficiency will increase in grid. resources have an important and effective role ...

Journal: :international journal of smart electrical engineering 2012
hassan monsef pouyan khajavi

reaching an electricity system which is both economically efficient and environmentally friendly is motivating countries to design and execute different types of tou demand response programs. but there are certain deficiencies which prevent these programs to effectively modify the load shape. smart grid as a means could help the electricity system to reach the highest demand side management ...

Smart grid concept is introduced to modify the power grid by utilizing new information and communication technology. Smart grid needs live power consumption monitoring to provide required services and for this issue, bi-directional communication is essential. Security and privacy are the most important requirements that should be provided in the communication. Because of the complex design of s...

In this paper, a supervisory controller is proposed to manage the power flow in a hybrid AC/DC micro-grid for both grid-connected and disconnected modes. When the hybrid AC/DC micro-grid is connected to the utility grid, power surplus or shortage leads to power trade between the micro-grid and the utility grid. In the grid-disconnected mode, the renewable power sources (wind and solar generatio...

There area lot of mobile computer devices with a variety of applications and users Tend to use them more. Due to the limitations of mobile devices, running most of the procedures are impossible. To resolve this problem, mobile devices can be connected to the grid, to use the facilities of grid. On the other hand the communication mechanisms are different for each device and they cannot be c...

There area lot of mobile computer devices with a variety of applications and users Tend to use them more. Due to the limitations of mobile devices, running most of the procedures are impossible. To resolve this problem, mobile devices can be connected to the grid, to use the facilities of grid. On the other hand the communication mechanisms are different for each device and they cannot be c...

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