نتایج جستجو برای: simulation based optimization

تعداد نتایج: 3448619  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
hossein abedini mahmoud reza pishvaie ramin bozorgmehry boozarjomehry

for large and complex reacting systems, computational efficiency becomes a critical issue in process simulation, optimization and model-based control. mechanism simplification is often a necessity to improve computational speed. we present a novel approach to simplification of reaction networks that formulates the model reduction problem as an optimization problem and solves it using genetic al...

N. Chiadamrong V. Piyathanavong

Models that aim to optimize the design of supply chain networks have gained more interest in the supply chain literature. Mixed-integer linear programming and discrete-event simulation are widely used for such an optimization problem. We present a hybrid approach to support decisions for supply chain network design using a combination of analytical and discrete-event simulation models. The prop...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1380

در این پایان نامه خصوصیات کلی شبیه سازی cycle-based معرفی شده و نحوه انجام شبیه سازی cycle-based در سطح گیت و سطح انتقال ثبات مورد بررسی موشکافانه قرار گرفته است . در این پایان نامه همچنین محدودیتهای شبیه سازی cycle-based معرفی شده و راه حلهایی برای این مشکلات ارائه شده است . به موازات این پایان نامه و برای اثبات صحت نظریه های مطرح شده و راه حلهای ارائه شده در آن، یک شبیه ساز cycle-based برای ز...

Journal: :journal of agricultural science and technology 2014
h. ebrahimian e. playan

high efficiency and uniformity of water and fertilizer application are usually, considered as the ultimate goals of an appropriate design and management of irrigation and fertigation systems. the objective followed in this paper was to present a simulation-optimization model for alternate vs. conventional furrow fertigation. two simulation models (surface fertigation and swms-2d models) along w...

2009
Yuehong Xie

Miminizing errors of the physical parameters of interest should be the ultimate goal of any event selection optimization in high energy physics data analysis involving parameter determination. Quick and reliable error estimation is a crucial ingredient for realizing this goal. In this paper we derive a formalism for direct evaluation of measurement errors using the signal probability density fu...

Kheirkhah, Amirsaman , Zolfaghari, Hassan ,

  In this paper, a discrete event simulation model of Iranian railway system is used for analyzing performance of the system in freight sector. The model analysis shows more sensitivity of the system on loading and unloading facilities than on number of wagons and locomotives. System optimization through simulation optimization technique, shows that more than 4% of all wagons available in the n...

Journal: :Simulation Modelling Practice and Theory 2014
Atiyah Elsheikh

The topic of simulation–optimization has not been fundamentally tackled by many continuous-time modeling and simulation tools, yet. Common simulation-based optimization problems are usually coupled with standard optimization algorithms like any other simulation-free nonlinear optimization problems. While such couplings are usually based on many state-of-the-art software engineering concepts wit...

Liu Pingle, Luo He’an Wang Lianjie

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 sim...

Journal: :IEEE Transactions on Automatic Control 2001

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