نتایج جستجو برای: use optimization

تعداد نتایج: 2015701  

2002
Jay D. Martin Timothy W. Simpson

* Research Assistant, Applied Research Laboratory. Phone: (814) 865-5930. Email: [email protected]. † Assistant Professor, Departments of Mechanical & Nuclear Engineering and Industrial & Manufacturing Engineering. Member AIAA. Corresponding Author. Phone/fax: (814) 863-7136/4745. Email: [email protected]. ABSTRACT This paper describes a method to implement an adaptive metamodeling procedure during sim...

We use a multilayer back propagation neural network whose training is based on Levenberg-Marquardt optimization method and apply polyphase codes to its input layer for radar pulse compression in environments with similar targets. The advantage of using polyphase codes (in contrast to binary codes) is lower sidelobe levels and much better Doppler tolerance. The use of Levenberg-Marquardt optimiz...

Journal: :تحقیقات مالی اسلامی 0
فریدون رهنمای رودپشتی استاد گروه مالی و حسابداری دانشگاه آزاد اسلامی واحد علوم و تحقیقات یاور میرعباسی دانشجوی دکتری مدیریت مالی دانشگاه آزاد اسلامی واحد علوم و تحقیقات

in order to use an islamic financial instrument, this paper intends to measure and evaluate negative and positive deviations from target rate of return in investment opportunity evaluation,that leads to presenting an upside potential- adjusted risk measure. this risk measure named upside potential adjusted risk measure (alpm) is generally applicable and provides assumptions of variance, downsid...

Journal: :تحقیقات آب و خاک ایران 0
فاطمه حیدری دانشگاه تربیت مدرس بهرام ثقفیان دانشگاه آزاد اسلامی، واحد علوم و تحقیقات مجید دلاور هیات علمی-دانشگاه تربیت مدرس

many real water resources optimization problems involve conflicting objectives. in this study, multiobjective genetic algorithm nsga-ii, has been developed for optimization the conjunctive use of surface water and groundwater resources and optimal management of supply and demand of agricultural water. here, optimal allocation of land and water resources to the dominant products in najaf abad pl...

Journal: :مهندسی صنایع 0
عاطفه کهفی اردکانی کارشناسی ارشد مهندسی صنایع- دانشکده فنی و مهندسی- دانشگاه پیام¬نور تهران فرناز برزین پور استادیار دانشکده مهندسی صنایع- دانشگاه علم و صنعت ایران رضا توکلی¬مقدم استاد گروه مهندسی صنایع- دانشکده فنی و مهندسی- دانشگاه تهران

cellular manufacturing system is one of the most important applications of group technology. design of this system involves many structural and operational issues, in which the cell formation and production planning are two important steps. in this paper, a new mathematical model is proposed for integration of cell formation and production planning problems with the aim of minimizing the overal...

Journal: :روش های عددی در مهندسی (استقلال) 0
رحمت اله هوشمند r. hooshmand حسین سیفی و ولی اله طحانی h. seifi and v. tahani

in this article, an effective method to control a power system during emergency conditions is presented. based on fuzzy linear programming (flp), a new technique is developed to solve the load shedding and generation reallocation (lsgr) optimization problem. the objective function consists of terms of load curtailments and deviations in generation schedules. the constraints are power system var...

Journal: :the modares journal of electrical engineering 2015
fatemeh tohfeh ahmad fakharian

this paper presents a parameterization method to optimal trajectory planning and dynamic obstacle avoidance for omni-directional robots. the aim of trajectory planning is minimizing a quadratic cost function while a maximum limitation on velocity and acceleration of robot is considered. first, we parameterize the trajectory using polynomial functions with unknown coefficients which transforms t...

Journal: :international journal of smart electrical engineering 2014
javad gholinezhad mahmoud ebaadian mohammad r. aghaerrahimi

in this paper, a consistent pattern with the optimal coordinated design of pss and sssc controller to improve the damping of low frequency oscillations is shown. in this design, sensing and signal transmission time delays are considered as effectiveness parameters. the design problem has been considered an optimization problem and biogeography-based optimization (bbo) algorithm is used for sear...

Placement process is one of the vital stages in physical design. In this stage, modules and elements of circuit are placed in distinct locations according to optimization basis. So that, each placement process tries to influence on one or more optimization factor. In the other hand, it can be told unequivocally that FPGA is one of the most important and applicable devices in our electronic worl...

In this study, the optimization and analysis of exergy and thermoelectronics of a combined heat and power generation system, heat and cold with thermal storage for use in a residential complex with an area of ​​147,000 square meters, with the main driving motive of the internal combustion engine. The optimization of the system is based on the annual cost minimization and in two modes of using a...

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