نتایج جستجو برای: simulation optimization approach

تعداد نتایج: 1965560  

Journal: :journal of ai and data mining 2015
m. aghaei a. dastfan

the harmonic in distribution systems becomes an important problem due to an increase in nonlinear loads. this paper presents a new approach based on a graph algorithm for optimum placement of passive harmonic filters in a multi-bus system, which suffers from harmonic current sources. the objective of this paper is to minimize the network loss, the cost of the filter and the total harmonic disto...

1996
Richard F. Kazmierczak

For simulation to be truly useful for investigating many problems in agricultural economics, non-simplifying optimization techniques need to be employed. General methods for simulation optimization that do not inhibit system characterization or analysis are available, and they would appear to provide much of the mathematical and optimizing rigor demanded by economists. This paper describes the ...

2008
T. Hemker O. von Stryk H. De Gersem T. Weiland

The numerical optimization of continuous parameters in electrotechnical design using electromagnetic field simulation is already standard. In this paper, we describe a new sequential surrogate optimization approach for simulation-based mixed-integer nonlinear programming problems. We apply the method for the optimization of combined integerand real-valued geometrical parameters of the coils of ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
liu pingle wang lianjie luo he’an

the bubble effectiveness in liquid phase cylohexane non-catalytic oxidation process is discussed in this paper. then the bubble effectiveness and a new proposed kinetic model are used in the mathematical model of the industrial reactor for the cyclohexane non-catalytic oxidation process. furthermore, simulation and optimization based on this reactor model are carried out. the results of simulat...

 It is scientifically challenging to determine the inventory level all through the supply chain in such a way that the desired objectives such as effectiveness and responsiveness of the supply chain system can be obtained. Simulation is a means for solving various problems which cannot be solved by regular exact models such as mathematical ones due to their complexity. The present paper is aime...

2013
Emre Irfanoglu Ilker Akgun Murat M. Gunal

A metamodel in simulation modeling, as also known as response surfaces, emulators, auxiliary models, etc. relates a simulation model’s outputs to its inputs without the need for further experimentation. A metamodel is essentially a regression model and mostly known as “the model of a simulation model”. A metamodel may be used for Validation and Verification, sensitivity or what-if analysis, and...

Bahram Sami Kashkooli Jafar Jafrai-asl, Mehdi Bahrami

One of the key factors affecting leakage in water distribution systems is network pressure management by putting Pressure Reduce Valves (PRV) in the flow path and optimal regulation of these vales in water networks. This study aimed at investigating optimal pressure management problems so as to minimize leakage in water distribution networks. To do so, an approach was proposed for both optimal ...

Journal: :Computers & Chemical Engineering 2012
Amalia Nikolopoulou Marianthi G. Ierapetritou

In this work, we propose a hybrid simulation optimization approach that addresses the problem of supply chain management. We formulated the problem as a mathematical model which minimizes the summation of production cost, transportation cost, inventory holding and shortage costs, subject to capacity and inventory balance constraints and propose a hybrid approach combining mathematical programmi...

2007
Michael Ferris Geng Deng

In simulation-based optimization, we seek the optimal parameter settings that minimize or maximize certain performance measures of the simulation system. In this paper, we use a two-phase approach to calibrate simulation parameters using classification tools. This classification-based method is used in Phase I to facilitate the global search process and it is followed by local optimization in P...

To realize the self-healing concept of smart grids, an accurate and reliable fault locator is a prerequisite. This paper presents a new fault location method for active power distribution networks which is based on measured voltage sag and use of whale optimization algorithm (WOA). The fault induced voltage sag depends on the fault location and resistance. Therefore, the fault location can be f...

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