نتایج جستجو برای: numerical computation

تعداد نتایج: 459517  

‎This paper describes a new optimization method for solving continuous semi-infinite linear problems‎. ‎With regard to the dual properties‎, ‎the problem is presented as a measure theoretical optimization problem‎, ‎in which the existence of the solution is guaranteed‎. ‎Then‎, ‎on the basis of the atomic measure properties‎, ‎a computation method was presented for obtaining the near optimal so...

In present paper, a numerical approach for solving Cauchy type singular integral equations is discussed. Lagrange interpolation with Gauss Legendre quadrature nodes and Taylor series expansion are utilized to reduce the computation of integral equations into some algebraic equations. Finally, five examples with exact solution are given to show efficiency and applicability of the method. Also, w...

Abolghasem Zeidaabadi-Nezhad1 Hossein Mohammadzadeh Zaker Hossein Firouzeh

The Radar Cross Section of a target plays an important role in the detection of targets by radars‎. ‎This paper presents a new method to predict the bistatic and monostatic RCS of coated electrically large objects. ‎The bodies can be covered by lossy electric and/or magnetic Radar Absorbing Materials (RAMs)‎. ‎These materials can be approximated by the Fresnel reflection coefficients‎. ‎The pro...

Abdolreza Gharahsofloo Ali Rahmani Hanzaki,

Dimensional synthesis of a parallel robot may be the initial stage of its design process, which is usually carried out based on a required workspace. Since optimization of the links lengths of the robot for the workspace is usually done, the workspace computation process must be run numerous times. Hence, importance of the efficiency of the algorithm and the CPU time of the workspace computatio...

Journal: :فیزیک زمین و فضا 0
محمدرضا سیف دانش آموخته کارشناسی ارشد ژئودزی، دانشکده مهندسی نقشه برداری، دانشگاه خواجه نصیرالدین طوسی، تهران، ایران و و پژوهشگر، گروه عمران، دانشکده فنی و مهندسی، دانشگاه امام حسین(ع)، تهران، ایران محمدعلی شریفی استادیار، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران مهدی نجفی علمداری دانشیار، دانشکده مهندسی نقشه برداری، دانشگاه خواجه نصیرالدین طوسی، تهران، ایران

the low earth orbiting (leo) satellites are widely used for geosciences applications. for most applications, precise orbital information of the satellites is required. a combination of the in suite observations and dynamic orbit yields the optimum solution. in order to obtain the combined optimal solution, one needs to analytically or numerically propagate the state vector epoch by an epoch bas...

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