Search Results - ((nonlinear programming) OR (linear programming))

Development of nonlinear model for continuous stirred tank reactor (CSTR) by Mohamad Ikwan, Zakaria

“…Continuous stirred tank reactors (CSTR) finds wide application in the chemical industry from pilot plant to full-scale production operation.CSTRs generally present operational problems due to complex open-loop nonlinear behavior in the form of input/output multiplicities and ignition/extinction phenomena.A major limitation of linear model is that plant behavior is described by linear dynamic model.As a result,linear model is inadequate for highly nonlinear process and moderately nonlinear process which have large operating regimes.This shortcoming coupled with increasingly stringent demands on throughput and product quality has spurred the development of nonlinear model.The objective of this research are development mathematical model for CSTR process based on first principal,validation of mathematical model through experimentation and nonlinear model identification of a CSTR process.The mathematical model based on first principles is developed from sodium hydroxide,ethyl acetate,and sodium acetate and ethanol mass balance.Then,the model equation is solving in MATLAB environment by doing algorithm for this process.The program for CSTR system is created and this program known as nonlinear fundamental model.The result from the MATLAB simulation program is compared with experimental result to validate the fundamental model. …”
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The Effect Of Reparameterisation On The Behaviour Of Nonlinear Estimates by Mohamed Ramli, Norazan

“…The estimates of the para meters were calculated by using the Gauss-Newton algorithm in SPLUS Programming Language. A good estimator was the one which had the proper ties closed to the behaviour of a linear estimate . …”
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Earthquake site response analyses for soil conditions of several cities in Malaysia / Nasim Sarrafi Aghdam by Nasim Sarrafi, Aghdam

“…Based on the behaviour of the soil during the earthquake, programs are divided in three different aspects: linear, equivalent linear and also nonlinear. …”
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Haar wavelet method for constrained nonlinear optimal control problems with application to production inventory model by Waleeda Swaidan, Amran Hussin

“…This method used the quasilinearization technique and Haar wavelet operational matrix to convert the nonlinear optimal control problem into a sequence of quadratic programming problems. …”
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A Review of Reservoir Operation Optimisations: from Traditional Models to Metaheuristic Algorithms by Lai V., Huang Y.F., Koo C.H., Ahmed A.N., El-Shafie A.

“…Decision making; Dynamic programming; Linear programming; Nonlinear programming; Operating costs; 'current; Energy productions; Floodings; Meta-heuristics algorithms; Optimal reservoir operations; Optimizing energy; Reservoir operation; Reservoir operation optimizations; Traditional models; Water scarcity; Reservoirs (water)…”

An efficient pseudospectral method for solving a class of nonlinear optimal control problems by Tohidi, Emran, Pasban, Atena, Kilicman, Adem, Noghabi, S. Lotfi

“…At the first stage, we linearize the nonlinear dynamical system by an interesting technique which is called linear combination property of intervals. …”
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Generalized Logarithmic Penalty Function Approach For Invex Nonlinear Constrained Optimization And Its Application by Hassan, Mansur

“…A penalty function approach is used widely in the field of mathematical programming, and it served as an alternative to conventional non-linear constrained optimization approach. …”
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Nonlinear finite element modeling of buried conduit structure by Ahmad, Razali

“…The analysis was carried out by Finite Element Method which was written in high level programming language, FOTRAN, environment. The models were carried out in linear and nonlinear analysis for various load cases. …”
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Numerical methods for nonlinear optimal control problems using haar wavelet operational matrices / Waleeda Swaidan Ali by Waleeda Swaidan, Ali

“…The quadratic programming problem with linear inequality constraints is then solved by using standard QP solver. …”
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Nonlinearity Tests For Bilinear Time Series Data by Mohamed, Ibrahim, Zaharim, Azami, Yahya, Mohd. Sahar

“…Through Simulation Studies, It Will Be Shown That The Tests Work Well To Distinguish Linear From Nonlinear Data Set Generated From Bilinear Model. …”
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An evolutionary programming approach to solve price-based unit commitment (PBUC) problem in electricity market / Barbara Minot Thomas by Thomas, Barbara Minot

“…PBUC problem is a mixed integer and continuous nonlinear optimization problem. PBUC is difficult to solve due to the tremendous dimension, the objective function is non-linear, and it involves a lot of constraints. …”
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The use of inter-conversion equations on bituminous binder data by Nur Izzi Md. Yusoff, Mohd Rosli Hainin, Mounier, Damien, Airey, Gordon D.

“…This was done with the aid of the non-linear regularization (NLREG) computer program. The NLREG software is a computer program for solving nonlinear ill-posed problem and is based on non-linear Tikhonov regularization method. …”
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Dodge-Romig plans revisited by Shyamaprasad Mukherjee

“…Further, the requirement about a given customer’s risk has been considered as a fuzzy constraint in a fuzzy nonlinear integer programming problem which can be eventually solved in terms of two non-linear integer programming problems, assuming a trapezoidal membership function. …”
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Nonlinear finite element analysis of reinforced concrete tube in tube of tall buildings by Marsono, Abdul Kadir, Lee, Siong Wee

“…The non-linear finite The non-linear finite element analysis (NLFEA) has potential as a readily usable and reliable means for analyzing of civil structures with the availability of computer technology. …”
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Evaluation Of Idealized Capacity Curve Generation For Reinforced Concrete Framed-Structures Subjected To Seismic Loading by Mehrdad, Seifi

“…Then, a program was developed to overcome the difficulties of graphical iterative procedure of idealization proposed by FEMA-356. …”
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Introduction to nonlinear discrete systems: theory and modelling by Tsoy, Eduard N., Umarov, Bakhram A.

“…A Mathematica program is provided for better comprehension of results and further exploration. …”
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Linearization of power amplifiers with memory effects using memory polynomial and linearly interpolated look-up table predistorter by Saadoon, Mohammed Ayad

“…The LUT addresses the highly nonlinearity distortion of the PA, while the MP compensates mild nonlinearities and memory effects. …”
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A study on solution of matrix riccati differential equations using ant colony programming and simulink / Mohd Zahurin Mohamed Kamali by Mohamed Kamali, Mohd Zahurin

“…In this thesis, we implement the modified ant colony programming (ACP) algorithm for solving the matrix Riccati differential equation (MRDE). …”
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Homotopy-perturbation method for solving linear and nonlinear differential equation by Chowdhury, Md. Sazzad Hossien

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MODELLING AND OPTIMIZATION OF HYBRID POWER SYSTEMS FOR RURAL AREAS by ADHI, VINCENT ADRIAN

“…The optimization result shows that the best combination is 79% solar energy and 21% wind energy. This program could be improved in the future by using nonlinear programing solving method to increase the accuracy of the program.…”
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