نتایج جستجو برای: dynamic

تعداد نتایج: 406025  

Journal: :journal of cell and molecular research 0
reihaneh sabbaghzadeh majid monajjemi fatemeh mollaamin shahrbano oryan

insulin-like growth factor (igf-1) is an anti-apoptosis factor in multiple cell types associated with various cancers. computational methods allow investigating the systems between 50–100 atoms in the frame of quantum mechanics and up to 50,000 atoms with molecular dynamics. since there are specific interactions between the residues, the solvent could play an important role in the stability of ...

Journal: :iranian journal of management studies 2011
ali jazayeri narjes jazayeri

this paper studies the dynamic behavior of price elasticity and its effects on the overall profit. although price elasticity has a significant effect on sales, its dynamics have not been examined so far in pricing models. in this paper, a simple pricing model is suggested in which, price elasticity is considered dynamic. the suggested pricing model is concerned with a monopolist that its object...

Journal: :international journal of nonlinear analysis and applications 2015
alireza bahiraie behzad abbasi farahnaz omidi nor aishah hamzah abdul hadi yaakub

this paper presents dynamic portfolio model based on the merton's optimal investment-consumption model, which combines dynamic synthetic put option using risk-free and risky assets. this paper is extended version of methodological paper published by yuan yao (2012) cite{26}. because of the long history of the development of foreign financial market, with a variety of financial derivatives, the ...

Journal: :journal of optimization in industrial engineering 2010
moharam habib nezhad korayem mehdi bamdad ashkan akbareh

planning robot trajectory is a complex task that plays a significant role in design and application of robots in task space. the problem is formulated as a trajectory optimization problem which is fundamentally a constrained nonlinear optimization problem. open-loop optimal control method is proposed as an approach for trajectory optimization of cable parallel manipulator for a given two-end-po...

Journal: :رشد و یادگیری حرکتی - ورزشی 0
shahzad tahmasebi استادیار دانشگاه تهران صنم بیگم قدس میرحیدری کارشناس ارشد دانشگاه تهران

the concept of imagery is to make an image of successful movement skill or a relaxing image in mind with no body training and external experience. the aim of the present study was to compare the effect of traditional and pettlep mental imagery methods on static and dynamic balance. the statistical population consisted of all female university of tehran students who had general physical educatio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی مکانیک 1384

این پروژه پاسخی دینامیکی ورق های نازک مستطیلی که حداقل دو طرف آن دارای تکیه گاه ساده بوده و تحت بارگذاری مکانیکی مستقر روی فونداسیون الاستیک از نوع پسترنک باشد را بررسی می کند بارهای مکانیکی شامل بارهای ضربه ای عمود بر سطح ورق و بارهای درون صفحه ای وارد بر لبه های ورق به صورت تنش تک محوری و دو محوری می باشد. آنالیز براساس روش حل دقیق می باشد در ابتدا ارتعاشات آزاد ورق بصورت تحلیلی بررسی شده و ف...

Journal: :civil engineering infrastructures journal 0
seyed mehdi zahrai associate professor, center of excellence for engineering and management of civil infrastructures, school of civil engineering, college of engineering, university of tehran, p.o.box: 11155-4563, tehran, iran. alireza ezoddin ph.d. student, faculty of civil engineering, university of semnan, semnan, iran.

progressive collapse is a chain reaction of failures propagating throughout a portion of the structure disproportionate to the original local failure occurring when a sudden loss of a critical load‐bearing element initiates a structural element failure, eventually resulting in partial or full collapse of the structure. both general services administration (gsa) and united states department of d...

Journal: :international journal of information, security and systems management 2012
alireza saeedi hassan khotanlou mohammad nassiri

honeypot is a security device the value of which lies mainly in discovering and inspecting, being attacked and being at risk. most of the present honeypots are configured and installed on the network statically. in some cases considerations have been made on dynamic configuration of honeypots at the time of installation but still no study have been carried out on how to instantaneously change t...

Journal: :medical journal of islamic republic of iran 0
mohammad akbari department of physical therapy, school of rehabilitation sciences, iran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) m. mohammadi department of technical orthopedics, iran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) hassan saeedi department of technical orthopedics, iran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

abstract background: various types of foot orthoses are prescribed for people with flatfoot. it has been reported that orthoses not only improve the biomechanics of the lower limb, but also have good effects on some balance parameters in these subjects. it is hypothesized that the latter effect is dependent on the rigidity of the orthoses. the aim of this study was to evaluate and compare the e...

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