نتایج جستجو برای: dynamic algorithm

تعداد نتایج: 1105998  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
mohammad reza jafari karim salahshoor

an adaptive version of growing and pruning rbf neural network has been used to predict the system output and implement linear model-based predictive controller (lmpc) and non-linear model-based predictive controller (nmpc) strategies. a radial-basis neural network with growing and pruning capabilities is introduced to carry out on-line model identification.an unscented kalman filter (ukf) algor...

Journal: :مهندسی برق و الکترونیک ایران 0
s. h. hosseini k. mohammadi

nowadays with increasing use of numerous nonlinear loads, voltage and current harmonics in power systems are one of the most important problems power engineers encounter. many of these nonlinear loads, because of their dynamic natures, inject time-varying harmonics into power system. common techniques applied for harmonics measurement and assessment such as fft have significant errors in presen...

Journal: :journal of computer and robotics 0
ali safari mamaghani islamic azad university of qazvin kayvan asghari islamic azad university of iran farborz mahmoudi islamic azad university of qazvin mohammad reza meybodi amirkabir university of technology iran

optimizing the database queries is one of hard research problems. exhaustive search techniques like dynamic programming is suitable for queries with a few relations, but by increasing the number of relations in query, much use of memory and processing is needed, and the use of these methods is not suitable, so we have to use random and evolutionary methods. the use of evolutionary methods, beca...

We present a stochastic dynamic programming approach with Markov chains for optimal control of the forest sector. The forest is managed via continuous cover forestry and the complete system is sustainable. Forest industry production, logistic solutions and harvest levels are optimized based on the sequentially revealed states of the markets. Adaptive full system optimization is necessary for co...

Journal: :journal of optimization in industrial engineering 2014
reza kia nikbakhsh javadian reza tavakkoli-moghaddam

in this paper, a mixed-integer linearized programming (minlp) model is presented to design a group layout (gl) of a cellular manufacturing system (cms) in a dynamic environment with considering production planning (pp) decisions. this model incorporates with an extensive coverage of important manufacturing features used in the design of cmss. there are also some features that make the presented...

Journal: :iranian journal of medical physics 0
seyed vahab shojaedini electrical and computer engineering department, iranian research organization for science and technology, tehran, iran.

introduction the morphologic features of human sperms are key indicators for monitoring fertility problems in men. therefore, automated analyzing methods via microscopic videos have become the most favorite policy in infertility treatment during the last decades. materials and methods in the proposed method, firstly a hypothesis testing framework was defined to distinguish sperms from backgroun...

Journal: :international journal of transportation engineereing 2014
saeed mohammadzadeh seyed ali mosayebi

for dynamic analyses of railway track structures, the algorithm of solution is very important. for estimating the important problems in the railway tracks such as the effects of rail joints, rail supports, rail modeling in the nearness of bridge and other problems, the models of the axially beam model on the elastic foundation can be utilized. for studying the effects of axially beam on the ela...

J. Jin, J.N. He, L.J. Li,

A quick group search optimizer (QGSO) is an intelligent optimization algorithm which has been applied in structural optimal design, including the hinged spatial structural system. The accuracy and convergence rate of QGSO are feasible to deal with a spatial structural system. In this paper, the QGSO algorithm optimization is adopted in seismic research of steel frames with semi-rigid connection...

تقی نیام, فهیمه, ربانی, مسعود, رفیعی, حامد, فرخی اصل, حامد,

In this paper, the solution of a non-linear model of Cell Manufacturing (CM) in certain and dynamic conditions is studied, considering intracellular and extracellular costs, cell constructing costs, the cost of restoration and the cost of equipment transportation per distance travelled. Since the number of cells in each stage of production is important, by optimizing the number of cells, add...

In this paper, the uncertain dynamic parameters of an experimental target tracker robot are identified through the application of genetic algorithm. The considered serial robot is a two-degree-of-freedom dynamic system with two revolute joints in which damping coefficients and inertia terms are uncertain. First, dynamic equations governing the robot system are extracted and then, simulated nume...

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