نتایج جستجو برای: Optimization Methods

تعداد نتایج: 2136515  

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده برق و الکترونیک 1390

there are many approaches for solving variety combinatorial optimization problems (np-compelete) that devided to exact solutions and approximate solutions. exact methods can only be used for very small size instances due to their expontional search space. for real-world problems, we have to employ approximate methods such as evolutionary algorithms (eas) that find a near-optimal solution in a r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم پایه 1391

abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Journal: :iranian journal of public health 0
neda kaffash-charandabi gis dept., k.n.toosi university of technology, tehran, iran. abolghasem sadeghi-niaraki gis dept., k.n.toosi university of technology, tehran, iran and dept. of geoinformatic eng., inha university, incheon, south korea. dong-kyun park u-healthcare center, gachon university, gil hospital, incheon, south korea.

background : cardiac arrest is a condition in which the heart is completely stopped and is not pumping any blood. although most cardiac arrest cases are reported from homes or hospitals, about 20% occur in public areas. therefore, these areas need to be investigated in terms of cardiac arrest incidence so that places of high incidence can be identi-fied and cardiac rehabilitation defibrillators...

Journal: :Proceedings on Privacy Enhancing Technologies 2022

We propose a method to optimally select mix network parameters for given deployment context and adversarial model. Our considers both worstcase average-case anonymity selects configurations that meet worst-case constraints while maximizing average anonymity. apply our methods mixnet size optimization determine the number width of layers, provide results various scenarios. For cases where sudden...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی (نوشیروانی) بابل - دانشکده مهندسی مکانیک 1389

due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...

Journal: :international journal of mathematical modelling and computations 0
b. azarkhalili sharif university of technology, azadi ave, tehran iran, islamic republic of mathematics department m. rasouli sharif university of technology, azadi ave, tehran iran, islamic republic of electrical engineering department p. moghadas sharif university of technology, azadi ave, tehran iran, islamic republic of aerospace engineering department b. mehri sharif university of technology, azadi ave, tehran iran, islamic republic of mathematics department

in this paper, we have outlined the surrogate management framework for optimization of expensive functions. an initial simple iterative method which we call the “strawman” method illustrates how surrogates can be incorporated into optimization to stand in for the most expensive function. these ideas are made rigorous by incorporating them into the framework of pattern search methods. the smf al...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1387

چکیده: بررسی ادبیات مربوطه در کشور در زمینه یادگیری زبان انگلیسی نشان می‎دهد که علی‎رغم اهمیت املا در فرآیند یادگیری به طور عام و یادگیری زبان انگلیسی به طور خاص، این مولفه از جایگاهی متناسب با اهمیت آن برخوردار نیست و عمدتاً نادیده گرفته شده است. تحقیقات گسترده‎ای در خارج از کشور در مورد ماهیت این مولفه صورت گرفته است، در حالی که به جرأت می‎توان گفت در داخل کشور گامی در مورد درک ماهیت آن و فرآی...

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