Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Simplex Method"”.
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Special versus standard algorithms for large-scale harvest scheduling problems
… is greatly reduced over that for the revised simplex method. The Dantzig-Wolfe algorithm is coded and tuned to solve general Model II problems, taking advantage of the Longest Path Algorithm in the subproblem step, and using the revised simplex method to solve the master problems. …
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Small Signal Equivalent Circuit Extraction From A Gallium Arsenide MESFET Device
… models and S-parameters are explained. The Simplex Method is used to optimize the small signal equivalent circuit model. A thorough analysis of the strengths and weaknesses of the Simplex method is performed.
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Comparison of Strategies for the Constraint Determination of Simulink Models
… algorithms, strategies such as Monte Carlo, the simplex method, simulated annealing, and evolution strategy were explored. In the end, a combined approach utilizing both simulated annealing and the simplex method was compared with evolution strategy for relative strengths and weaknesses. It was …
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Comparison of Strategies for the Constraint Determination of Simulink Models
… algorithms, strategies such as Monte Carlo, the simplex method, simulated annealing, and evolution strategy were explored. In the end, a combined approach utilizing both simulated annealing and the simplex method was compared with evolution strategy for relative strengths and weaknesses. It was …
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A Composite Algorithm for Mixed Integer Constrained Nonlinear Optimization
… algorithm is a modified version of the nonlinear simplex method. Significant modifications are made to this algorithm including the incorporation of a unidimensional search procedure and the use of a new method to treat constraints. Additional features of the composite algorithm include new …
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SIMNET, a primal Simplex code for networks
… is a variable and each node is a constraint. The Simplex Method, commonly used in LP problems, may be specialized to solve these problems very efficiently by exploiting the inherent special network structure. The key property of networks, essential to the algorithm, is the spanning tree …
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Karmarkars' Algorithm:Extensions and Implementation
… success is mainly due to the efficiency of the simplex method. In recent years, however, new techniques have emerged. The present work is concerned with investigating one such technique, namely Karmarkar's algorithm and its variants, extending it to structured linear programming problems and …
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Quadratic programming as an extension of linear programming
… self-defined. With the introduction of Dantzig's Simplex Method, Linear Programming has become an everyday technique. The same, we regret to say, is not true for Nonlinear Programming because this subject is broader and much more difficult to unify than that of Linear Programming. In fact at …
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Computer-assisted analysis of electron magnetic resonance spectra and the electron nuclear double resonance spectrum of isolated perylene cations
… the spectral parameters. It is based on the Simplex method of optimization and uses a least-squares response function to mathematically compare trial simulations with the experimental spectrum. Details of the program are discussed. Examples of its use in fitting the hyperfine coupling …
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Weighted two-band target entropy minimization for the reconstruction of pure component mass spectra: Simulation studies and the application to real system
… of noise on systems. 3) A two-peak targeting method to deal with highly overlapped spectra. 4) An exhaustive searching method to find all components automatically. A global optimization method called fast multi-start simplex method (FMSS) was developed. By discarding some un-promising points …
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Knowledge-based SOA framework for improved supply chain integration and delivery
… the flows between multiple supply chains. The methods used are a collection of heuristic rules for routing supply chain flow, a software engine to work through these rules and send messages to web services that encapsulate supply chain entities and a web based interface to view and measure the …
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Minimization of stresses and pressure surges in pipes using nonlinear optimization.
… in the design of hydraulic pipe networks. The method of characteristics has been used to solve the transient stresses and pressures in liquid-filled piping systems. The friction force is included in the equations of motion for the fluid and the pipe wall. The maximum pressure and maximum stress …
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Methods of non-linear least squares estimation
… model (also called Gauss-Newton or Taylor Series methods), 2) gradient techniques - use of the negative gradient of the sum of squares function (includes the well-known Method of Steepest Descent), 3) combination techniques - attempts to gain an improved rate of convergence through a combination …
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New geometric techniques for linear programming and graph partitioning
… we present the first randomized polynomial-time simplex algorithm for linear programming, answering a question that has been open for over fifty years. Like the other known polynomial-time algorithms for linear programming, its running time depends polynomially on the number of bits used to …
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Inverse problems in electromagnetics
… and the transmission coefficients. A robust method is proposed for the retrieval of metamaterials as isotropic media, and four improvements over the existing methods make the retrieval results more stable. Next, a new scheme is presented for the retrieval of a specific bianisotropic …
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A Composite-Upper Bounding Method of Finding a Feasible Solution to a Linear Programming Problem
… is to describe a synthesis of Wolfe's composite simplex algorithm1 and Dantzig's upper bounding technique2 to give a variation of the simplex method of obtaining a feasible solution to a linear programming problem. | The term, composite, refers to a technique for handling negative values of …
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ΑΝΑΠΤΥΞΗ ΑΥΤΟΜΑΤΟΠΟΙΗΜΕΝΩΝ ΜΕΘΟΔΩΝ ΑΝΑΛΥΣΕΩΣ ΜΕ ΤΗΝ ΤΕΧΝΙΚΗ ΕΙΣΑΓΩΓΗΣ ΔΕΙΓΜΑΤΟΣΣΕ ΡΟΗ
… THE OPTIMIZATION OF THE PARAMETERS OF THE NEW METHODS USING THE SIMPLEX METHOD. FIA FIRST APPEARED IN DENMARK IN 1975 AND IS BASED ON THE INJECTIN OF A LIQUID SAMPLE IN A FLOWING REAGENT. THE BASIC NEW ELEMENT IS THE FULL CONTROL OF THE SAMPLE'S DISPERSION BY MEANS OF THIN TUBES, REACTION …
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Direct application of the least action principle to solve (human) movement dynamics without using differential equations of motion
… least action (DLA) approach using the downhill simplex method (DSM) is applied to both the single and double pendulum systems as beginning test problems. The solutions so obtained are compared to numerical solutions of the corresponding Lagrange BOM solved using a first order Euler algorithm for …
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Terahertz time domain methods for material characterization of layered dielectric media
Material characterization methods for layered dielectric media are highly sought after in many fields including nondestructive evaluation, structural health monitoring, security imaging, biological tissue inspection and agricultural and industrial quality assurance. On the other hand, the still …
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ΜΕΛΕΤΗ ΠΡΟΣΔΙΟΡΙΣΜΟΥ ΕΝΩΣΕΩΝ ΥΔΡΑΡΓΥΡΟΥ ΜΕ ΤΗ ΦΑΣΜΑΤΟΜΕΤΡΙΑ ΑΤΟΜΙΚΗΣ ΑΠΟΡΡΟΦΗΣΗΣ ΨΥΧΡΟΥ ΑΤΜΟΥ ΚΑΙ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΜΕ ΠΑΡΑΓΟΝΤΙΚΟ ΣΧΕΔΙΑ...
… WHICH IS USED AT MERCURY DETERMINATIONS. THE METHOD WAS OPTIMIZED EITHER AS DIRECT DETERMINATION WITHOUT PRECONCENTRATION AND WITH PRECONCENTRATIONON A AU-PT AMALGAMATOR . IN THE FIRST CASE THE OPTIMIZATION WAS ACHIEVED BY THE APPLICATION OF A COMPLETE FACTORIAL DESIGN, ANALYSIS OF VARIANCE OF …
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