نتایج جستجو برای: dynamic non

تعداد نتایج: 1685795  

In this study, reservoir water level effects on nonlinear dynamic response of concrete gravity dams are investigated. For this purpose, the nonlinear behavior of the dam concrete is captured using the concrete damage plasticity (CDP) on the non associated flow rule assumption. Water in the reservoir is represented by the Lagrangian (displacement-based) fluid finite elements. The program ABAQUS ...

Journal: :international journal of advanced design and manufacturing technology 0
moharam habibnejad department of mechanical engineering, irann university of science and technology hamed rahimi nohooji amin nikoobin

this paper presents optimal control method to path planning of mobile robots with flexible joints. dynamic equations are derived and additional kinematic constraints are used to solve the extra dofs arose from base mobility. then with modeling the elasticity at each joint as a linear torsinal spring, the set of equations are formed. the hamiltonian function is formed and the necessary condition...

Journal: :سالمند 0
حیدر صادقی heydar sadeghi tarbiat moallem university oftehran,iranدانشگاه تربیت معلم تهران مهرعلی همتی نژاد mehr ali hemati nezhad university of guilan,iranدانشگاه گیلان معصومه باغبان masomeh baghban university of shomal,iranabstractدانشگاه غیر انتفاعی شمال (آمل)

objectives: investigating the effect of endurance training program onthe gait pattern of non-active elderly people. methods & materials: this study has been done by a semi-experience method with 23 old men and women by the average and standard deviation of 70/50±6/9 years old (n=14 people of exercise group, n=9 people of control group). the exercise group took part in this program for eight wee...

Journal: :Language Testing in Asia 2023

Abstract In this study, the potential impacts of dynamic assessment (DA) and non-dynamic (non-DA) on Ethiopian EFL students’ productive skills were investigated. Additionally, study examined attitudes regarding using DA in their speaking writing classes. Fifty-three intermediate learners selected convenience sampling method separated into two groups order to accomplish these goals. Next, both p...

Journal: :تحقیقات آب و خاک ایران 0
منوچهر فتحی مقدم دانشگاه شهید چمران اهواز- استاد دانشکده مهندسی علوم آب سجاد کیانی دانشجوی دکتری، گروه سازه های آبی دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز بابک لشکرآرا استادیار، گروه مهندسی عمران دانشگاه صنعتی جندی شاپور دزفول ماهر عبیداوی دانش آموخته کارشناسی ارشد، گروه سازه های آبی دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز،

the security and stability of dams for flood passing through the spillway should be provided. so, kinetic energy of flow over large spillway must be dissipated. one of the energy dissipation structures at downstream dams, are plunging pools. the aim of this paper is to investigate dynamic pressure that is created by the impact of a series of rounded non-submerged jets on a flat plate with the r...

Vijaya Rekha Rekha

In this paper, we have proposed a study on controllability and optimal harvestingof a prey predator model and mathematical non linear formation of the equation equilibriumpoint of Routh harvest stability analysis. The problem of determining the optimal harvestpolicy is solved by invoking Pontryagin0s maximum principle dynamic optimization of theharvest policy is studied by taking the combined h...

Fallah Mohammadi, Mohammad, Nabizade, Zahra , Shahrokhi, Hossein ,

Background and Objective: Low back pain is one of the most common musculoskeletal disorders. Exercise therapy is one of the most common treatments for low back pain. The aim of the present study was to investigate the effects of 6-week core stability exercises on disability and dynamic balance in women with non-specific chronic low back pain. Materials and Methods: This controlled clinical tri...

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