نتایج جستجو برای: radial basisfunctionrbf

تعداد نتایج: 61500  

A.H Mohazzab M Jabbari S.M.R Khalili,

This paper presents the effect of centrifugal load in functionally graded (FG) hollow sphere subjected to uniform magnetic field. Analytical solution for stresses and perturbation of the magnetic field vector are determined using the direct method and the power series method. The material stiffness, the magnetic permeability and the density vary continuously across the thickness direction accor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1389

بروز سیلاب های سهمگین در اثر تغییرات آب و هوایی طی دهه های اخیر سبب بروز خسارات فراوانی در نواحی مختلف دنیا شده است. در نواحی خشک تأثیر این تغییرات محسوس تر است. در این بین استان سیستان و بلوچستان با آب و هوای گرم و خشک، مستعد وقوع سیل می باشد. بطوریکه بزرگترین سیلاب های کشور در این منطقه بوقوع پیوسته است. حوضه آبریز سرباز که در قسمت های جنوبی این استان پهناور قرار گرفته، متأثر از شرایط موجود، ...

Journal: :iranian journal of medical physics 0
hamidreza baghani ph.d. student, radiation-medicine dept., nuclear engineering faculty, shahid beheshti university, tehran, iran seyed mahmoodreza aghamiri associate professor, radiation-medicine dept., nuclear engineering faculty, shahid beheshti university, tehran, iran hossein gharaati associate professor, medical engineering and physics dept., medical faculty, medical science university of tehran, tehran, iran seyed rabie mahdavi assistant professor, medical physics dept., medical faculty, medical science university of iran, tehran, iran

introduction: orthogonal radial fields are those in which the central axes are perpendicular to each other. an example of these orthogonal fields is the set of craniospinal orthogonal fields that are used for radiotherapy of medulloblastoma. craniospinal radial fields consist of two parallel-opposed fields for brain exposure and one or two posterior spinal fields for spinal cord exposure. the m...

Introduction: The use of two arterial conduits for CABG is rapidly increasing. The second arterial conduit to LITA is usually RITA or radial artery. We sought to compare outcomes when either RITA or radial artery is exclusively used as a Y composite graft to LITA for total arterial revascularization. Material and methods:  We retrospectively analyzed 231 ...

Background: The radial artery is an essential artery supplying the structures in the forearm. Variations in the radial artery concerning its origin, course, branching pattern, and mode of termination have been commonly reported. The high origin of the radial artery from either brachial or axillary artery was detected in numerous studies. Clinically-radial artery is used in cardiac catheterizati...

The efficiency measurement is a subject of great interest. The majority of studies on DEA models have been carried out using radial or non-radial approaches regarding the application of DEA for the efficiency measurement. This paper, based on the directional distance function, proposes a new generalized hybrid measure of efficiency under generalized returns to scale with the existence of both r...

Background: Some of the Mason type I fractures cannot be detected on early radiographic images. These occultfractures are considered as a diagnostic challenge for physicians. Our aim was to determine the value of bedsideultrasonography for the detection of Mason I radial head fractures that are non-visible in early X-ray’s.Methods: A prospective blind single-center diagnostic study was conducte...

Hadise Eghtedari Salimi, Mohamad Momen Ghribvand, Seyed Mohamadhasan Adel, Seyed Mohamadreza Afshani,

Background: Transradial access is one of the main access techniques in angiography. This method is technically more difficult as it is associated with radial artery occlusion. Radial artery cannulation from the dorsal surface of the hand in the snuffbox area has been introduced as a suitable solution to overcome some of the disadvantages of the standard radial artery method. This study was cond...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2015
mehdi tajdari saeed zare chavoshi

in the present study, five modeling approaches of ra, mlp, mnn, gff, and canfis were applied so as to estimate the radial overcut values in electrochemical drilling process. for these models, four input variables, namely electrolyte concentration, voltage, initial machining gap, and tool feed rate, were selected. the developed models were evaluated in terms of their prediction capability with m...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
محمدمهدی معرفت محمدرضا آسترکی مصطفی خسروی الحسینی

in studies done on porous burner, generally burners with axial flow are considered. in this paper, porous burners with radial and axial flow have been modeled numerically and results of radial and axial porous burners with equal fuel consumptions are compared. the mechanism used in combustion phenomenon is 15 stage mechanisms which predict the pollutions production precisely. the results show a...

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