نتایج جستجو برای: two dimensional elastodynamic analysis

تعداد نتایج: 4880163  

ژورنال: :iranian red crescent medical journal 0
firoozeh ahmadi department of reproductive imaging, reproductive biomedicine research center, royan institute for reproductive biomedicine, acecr, tehran, iran; department of reproductive imaging, reproductive biomedicine research center, royan institute for reproductive biomedicine, acecr, tehran, iran. tel: +98-21235624 46, fax: +98-2123562172 somayeh moukhah department of reproductive imaging, reproductive biomedicine research center, royan institute for reproductive biomedicine, acecr, tehran, iran farnaz akhbari department of reproductive imaging, reproductive biomedicine research center, royan institute for reproductive biomedicine, acecr, tehran, iran firouzeh ghaffari department of endocrinology and female infertility, reproductive biomedicine research center, royan institute for reproductive biomedicine, acecr, tehran, iran

conclusions iud displacement into the myometrium could be done in clinics, but advanced laparoscopy is needed for confirmed diagnosis and iud complication management. three- dimensional transvaginal ultrasound (3dtvus) clearly displays the correct position of the iud in the uterine cavity much better than the two-dimensional transvaginal ultrasound (2dtvus). introduction intrauterine devices (i...

2007
J. R. Barber

In this paper we shall investigate the normal surface displacement of the isotropic elastic half-space z > 0, due to a normal point force, F, which moves with constant speed, V, in the xdirection over the surface z = 0. This problem defines the Green's function for a class of elastodynamic contact problems for the half-space in which a frictionless rigid indenter moves at constant speed over th...

2017
Stéphanie Chaillat Marc Bonnet

This article is mainly devoted to a review on fast BEMs for elastodynamics, with particular attention on time-harmonic fast multipole methods (FMMs). It also includes original results that complete a very recent study on the FMM for elastodynamic problems in semi-infinite media. The main concepts underlying fast elastodynamic BEMs and the kernel-dependent elastodynamic FM-BEM based on the diago...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

‏‎this study investigated the effect of prior knowledge on the listening comprehension performance of fl learners. twenty students, male and female, drawn from the two intact groups of the senior and junior english language and literature majors were chosen as the participants of this study . the two groups were then randomly assigned into the experimental and control group. the experimental gr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده ادبیات و زبانهای خارجی 1393

the purpose of this study was to find the relationship between critical thinking and self-regulation with reading comprehension of iranian female elementary language learners. the present study is a correlational one having a descriptive design. two questionnaires, critical thinking questionnaire and self-regulation questionnaire which were valid and reliable questionnaires and four reading com...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1388

the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...

2013
Jan D. Achenbach Marino Arroyo Kuan Zhang Mohammad Rahimi

The reciprocity theorem is a fundamental theorem of the Theory of Elasticity (Betti 1872, Rayleigh 1873). The theorem connects the body forces, the surface tractions and the displacements of two elastodynamic states in a domain of an elastic body, by a volume integral and a surface integral. In this talk it is shown that the reciprocity theorem of elastodynamics can be used to solve actual prob...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

پایان نامه :0 1374

this thesis aims to adduce an unmitigated and comprehensive explication concerning the relationship of three significant elements of fiction: setting, chracter and theme. my research is basically placed on two outstanding novels of the 19th century: emily brontes wuthering heights and thomas hardys return of the native. my endeavour lies in studying the correlation among the three above-mention...

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