نتایج جستجو برای: discrete optimization

تعداد نتایج: 467118  

This paper considers solving optimization problem for linear discrete time systems such that closed-loop discrete-time system is positive (i.e., all of its state variables have non-negative values) and also finite-time stable. For this purpose, by considering a quadratic cost function, an optimal controller is designed such that in addition to minimizing the cost function, the positivity proper...

A. M. Salmani Oshnari, A.H. Salmani Oshnari, M. Ilchi Ghazaan,

Colliding Bodies Optimization (CBO) is a population-based metaheuristic algorithm that complies physics laws of momentum and energy. Due to the stagnation susceptibility of CBO by premature convergence and falling into local optima, some meritorious methodologies based on Sine Cosine Algorithm and a mutation operator were considered to mitigate the shortcomings mentioned earlier. Sine Cosine Al...

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: :مدیریت صنعتی 0
مریم محمدپناه کارشناس‎ارشد مدیریت فناوری اطلاعات، دانشکدۀ مدیریت و حسابداری، دانشگاه خوارزمی، تهران، ایران رضا یوسفی زنوز استادیار گروه مدیریت فناوری و اطلاعات، دانشکدۀ مدیریت دانشگاه خوارزمی، تهران، ایران اکبر حسن پور استادیار گروه مدیریت منابع انسانی، دانشکدۀ مدیریت دانشگاه خوارزمی، تهران، ایران

banking and financial services are important parts of the service industry. quality of service in the banking industry has a close relationship with customer satisfaction service system. banks could create competitive advantage by increasing customer satisfaction and reduce costs in today's competitive environment. this paper presents a decision-making model to obtain optimum tasks assigne...

This paper describes the synthesis of digitally excited pencil/flat top dual beams simultaneously in a linear antenna array constructed of isotropic elements. The objective is to generate a pencil/flat top beam pair using the excitations generated by the evolutionary algorithms. Both the beams share common variable discrete amplitude excitations and differ in variable discrete phase excitations...

2007
Uroš Klanšek Tomaž Žula Zdravko Kravanja Stojan Kravanja

ABSTRACT: The paper presents the discrete dimension optimization of unbraced rigid steel plane frames. The optimization of steel frames was carried out by the Mixed-Integer Non-linear Programming (MINLP) approach. The MINLP is a combined discrete-continuous optimization technique. It performs the discrete optimization of discrete decisions simultaneously with the continuous optimization of cont...

L. J. Li, Y. Y. Wang ,

This article introduces two swarm intelligent algorithms, a group search optimizer (GSO) and an artificial fish swarm algorithm (AFSA). A single intelligent algorithm always has both merits in its specific formulation and deficiencies due to its inherent limitations. Therefore, we propose a mixture of these algorithms to create a new hybrid optimization algorithm known as the group search-artif...

A. Kaveh, J. Torkamanzadeh, M.H Talebpour , V.R Kalatjari,

Different methods are available for simultaneous optimization of cross-section, topology and geometry of truss structures. Since the search space for this problem is very large, the probability of falling in local optimum is considerably high. On the other hand, different types of design variables (continuous and discrete) lead to some difficulties in the process of optimization. In this articl...

Journal: :Journal of the Operations Research Society of China 2013

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