نتایج جستجو برای: numerical methods
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دیوار های حائل سپری به عنوان عناصر نگهدارنده خاک دارای کاربرد های متنوعی اعم از تثبیت شیب جاده ها، حفاظت از سواحل در برابر فرسایش، کنترل گسترش جانبی در نواحی مستعد روانگرایی، پایدار سازی ترانشه های قائم و حفاظت از گود برداری ها می باشند. این نوع سازه های حائل به عنوان عناصر انعطاف پذیر دارای رفتار بار- تغییر شکل خاص خود می باشند و عملا" به دلیل ضخامت اندکی که دارند در اثر فشار جانبی خاک می توان...
the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...
Abstract In the previous chapter, we saw that simple explicit numerical scheme resulted in an instability problem. We also problem could be resolved by using sufficiently short time steps. But many situations, steps become exceedingly short, as can seen, e.g., stability criterion (3.56). This means have to perform computations for a very large number of reach final and it is therefore tempting ...
the computational method based on using the operational matrix of anorthogonal function for solving variational problems is computeroriented. in this approach, a truncated hartley series together withthe operational matrix of integration and integration of the crossproduct of two cas vectors are used for finding the solution ofvariational problems. two illustrative examples are included todemon...
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