نتایج جستجو برای: 2d

تعداد نتایج: 83069  

Journal: :international journal of civil engineering 0
m. derakhshandi faculty of engineering, arak university, arak, iran h. r. pourbagherian faculty of engineering, arak university, arak, iran m. h. baziar iran university of science and technology, tehran iran n. shariatmadari iran university of science and technology, tehran iran a. h. sadeghpour iran university of science and technology, tehran iran

in this study, the mechanical behavior of vanyar dam was evaluated at the end of construction. a two-dimensional numerical analysis was conducted based on a finite element method on the largest cross-section of the dam. the data recorded by the instruments located in the largest cross-section were compared with the results of the numerical analysis at the place of instruments. the settlement, p...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
r. khosravi s. h. sadeghi r. moini

the produced electric and magnetic fields due to lightning strikes to mountainous ground are determined in this paper. for the sake of simplicity a cone-shaped ground with finite conductivity is assumed to represent a natural nonflat ground. by this assumption, we deal with an axillary symmetrical structure so we use the cylindrical 2d-fdtd to save the simulation memory and time, dramatically. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی (نوشیروانی) بابل - دانشکده مهندسی عمران 1393

سدهای خاکی با هسته آسفالتی طی سال های اخیر موردتوجه قرارگرفته اند. این سدها برای نواحی پرباران و همچنین مناطقی که با کمبود منابع طبیعی رسی مواجه اند، بسیار مناسب می باشند. باوجود مزایای زیاد سدهای هسته آسفالتی، در مورد رفتار لرزه ای این سدها اطلاعات کمی در دست است و با توجه به شرایط لرزه خیزی کشور ما، ایران، شناخت این رفتار اهمیت بیشتری پیدا می کند. بر اساس پیشنهاد نشریه icold شماره 84 که در سا...

Journal: :journal of biomedical physics and engineering 0
m h bahreini toosi medical physics department, faculty of medicine, mashhad university of medical sciences, h zarghani medical physics department, faculty of medicine, mashhad university of medical sciences, h poorzand atherosclerosis prevention research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran sh naseri medical physics department, faculty of medicine, mashhad university of medical sciences, a eshraghi atherosclerosis prevention research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran a golabpour biomedical informatics department, faculty of medicine, mashhad university of medical sciences, mashhad, iran

background: the aim of the present study was to evaluate how left ventricular twist and torsion are associated with sex between sex groups of the same age. materials and methods : twenty one healthy subjects were scanned in left ventricle basal and apical short axis views to run the block matching algorithm; instantaneous changes in the base and apex rotation angels were estimated by this algor...

Journal: :تحقیقات مهندسی کشاورزی 0
مژده خلیلی دانش آموخته کارشناسی ارشد آبیاری و زهکشی دانشگاه علوم کشاورزی و منابع طبیعی گرگان مهدی اکبری دانشیار موسسه تحقیقات فنی و مهندسی کشاورزی ابوطالب هزارجریبی دانشیار گروه مهندسی آب دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان مهدی ذاکری نیا استادیار گروه مهندسی آب دانشکده کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان فریبرز عباسی استاد موسسه تحقیقات فنی و مهندسی کشاورزی

optimal use of water resources is essential to decrease cost and maximize available water resources. subsurface drip irrigation can increase irrigation and water use efficiency. this irrigation method distributes water into the soil, leaving the surface of the soil dry and decreasing evaporation. in the design of subsurface drip irrigation (sdi) systems, the dimensions of the wetted onion deter...

Journal: :iranian journal of radiation research 0
z. falahatpour department of medical radiation engineering, shahid beheshti university, tehran, iran s.m.r. aghamiri department of medical radiation engineering, shahid beheshti university, tehran, iran r. anbiaee department of radiotherapy and oncology, imam hossein hospital, tehran, iran

background: tangential irradiation of intact breast is one of the most common procedures performed in any radiotherapy center. this method is performed by using 2d and 3d treatment planning. the aim of this study was to compare 2d with 3d plans in breast conserving radiotherapy. homogeneity of isodose, and lung received dose were compared. materials and methods: twenty patients with breast canc...

Journal: :JSW 2017
Jiming Yao Yajing Liu

Because of diversity, complexity and poor information about non-layered orebody, it is difficult to be accurately described by regular geometry model. Mining engineers couldn’t accurately estimate the space distribution law of orebody's grade, quality and the total reserve according to the traditional 2-dementional (2D)graphics. So it is necessary to accurately establish non-layered orebody mod...

2006
Maitreyi Nanjanath Maria L. Gini

We present an auction-based method for dynamic allocation of tasks to robots. The robots operate in a 2D environment for which they have a map. Tasks are locations in the map that have to be visited by the robots, in any order. Unexpected obstacles and other delays may prevent a robot from completing its allocated tasks. Therefore tasks not yet achieved are rebid every time a task has been comp...

A new series of peptide-like derivatives containing different aromatic amino acids andpossessing pharmacophores of COX-2 inhibitors as SO2Me or N3 attached to the para positionof an end phenyl ring was synthesized for evaluation as selective cyclooxygenase-2 (COX-2)inhibitors. The synthetic reactions were based on the solid phase peptide synthesis methodusing Wang resin. One of the analogues, i...

Despite considerable enhances in recognizing hand gestures from still images, there are still many challenges in the classification of hand gestures in videos. The latter comes with more challenges, including higher computational complexity and arduous task of representing temporal features. Hand movement dynamics, represented by temporal features, have to be extracted by analyzing the total fr...

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