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Showing 1 to 20 of 59 for “"LaGrange multipliers"”.
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The Theory and Applications of Discrete Constrained Optimization Using Lagrange Multipliers
Finally, we demonstrate the efficiency and effectiveness of our proposed theory and methods. DLM is able to solve systematically general discrete, continuous and mixed-integer constrained benchmarks, which is a task not achieved by previous methods. DLM has found better multiplierless filter-bank …
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Solution of 2-D contact problems using a variational formulation with Lagrange multipliers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.
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Pseudonormality and a language multiplier theory for constrained optimization
Lagrange multipliers are central to analytical and computational studies in linear and non-linear optimization and have applications in a wide variety of fields, including communication, networking, economics, and manufacturing. In the past, the main research in Lagrange multiplier theory has …
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Analysis by Meshless Local Petrov-Galerkin Method of Material Discontinuities, Pull-in Instability in MEMS, Vibrations of Cracked Beams, and Finite Deformations of Rubberlike Materials
… conditions are enforced by the method of Lagrange multipliers. Three different techniques are employed to enforce continuity conditions at the material interfaces: Lagrange multipliers, jump functions, and MLS basis functions with discontinuous derivatives. For the electromechanical …
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Optimal harvesting theory for predator-prey metapopulations / Asep K. Supriatna.
… are found using dynamic programming and Lagrange multipliers. Rules about harvesting source/sink populations, more/less vulnerable prey subpopulations and more/less efficient predator subpopulations are explored. Strategies for harvesting critical prey subpopulations are suggested.
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The modelling of natural fibre-reinforced composites using a multi-scale methodology
… thus implementation via the penalty method and lagrange multipliers is investigated.
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Geometric discretization schemes and differential complexes for elasticity
… this configuration manifold. The discrete Euler-Lagrange equations are obtained without using Lagrange multipliers.
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Resonant Forcing of Nonlinear Systems
… are accessible to forcing. We find that certain Lagrange multipliers take on a fundamental physical role as the efficiency of the forcing function and the effective forcing experienced by the degrees of freedom which are not forced directly.
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Buckling and postbuckling analysis of delaminated beams under compressive loads
… method and arbitrary assumed displacements. Lagrange multipliers are used to enforce the kinematic constraints and boundary conditions, enabling a variety of support conditions to be studied.
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ΔΡΟΜΟΛΟΓΗΣΗ ΜΗΝΥΜΑΤΩΝ ΣΕ ΔΙΚΤΥΟ ΥΠΟΛΟΓΙΣΤΩΝ ΒΑΣΕΙ ΤΗΣ ΜΕΘΟΔΟΥ ΜΕΙΩΣΗΣ ΜΕΤΑΒΛΗΤΩΝ
… OF MEAN TIME DELAY OF PACKETS IS ATTAINED. LAGRANGE MULTIPLIERS METHOD IS STUDIED AND THE PROBLEMS ASSOCIATED WITH IT ARE EXAMINED. FURTHERMORE IT IS SHOWN THAT: 1) THE HESSIAN MATRIX OF THE OBJECTIVE FUNCTION IS NON-DIAGONAL AND SINGULAR. THE ELEMENTS OF THE MATRIX ARE EVALUATED. 2) THE …
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The development of a minimum weight design algorithm using fully stressed design iteration
… on the Kuhn-Tucker conditions, where negative Lagrange multipliers in the set identify element parameters that can be changed to produce a lighter weight structure. Five case studies are presented to demonstrate the algorithm.
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Multi-Time-Step Domain Decomposition and Coupling Methods for Non-Linear Structural Dynamics
… dual Schur domain decomposition method that uses Lagrange multipliers to enforce the continuity of the solution across the interfaces between the subdomains. The subdomains can be integrated with different time steps and/or time stepping schemes. The method was shown to be unconditionally stable, …
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Application of a Numerical Method and Optimal Control Theory to a Partial Differential Equation Model for a Bacterial Infection in a Chronic Wound
… calculus of variations, as well as the method of Lagrange Multipliers. Both of these techniques have seen prevalent use in the modern theories of Physics, Economics, as well as in the study of Partial Differential Equations. The numerical method we consider is the method of lines, a prominent …
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Experimental Evidence for Mixed Reality States in an Interreality System, And, Generalized Resonant Forcing of Nonlinear Dynamics
… system are accessible to forcing. Certain Lagrange multipliers take on a fundamental physical role as the efficiency of the forcing function and the effective forcing experienced by the degrees of freedom which are not forced directly. Furthermore, the product of the displacement of nearby …
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Structural analysis of geodesically stiffened composite panels with variable stiffener distribution
… stiffnesses of the stiffeners through the use of Lagrange multipliers in an energy method solution. The analysis is used to isolate the effect of various stiffener deformation modes on the buckling load and skin deformation patterns of geodesically stiffened panels under various load combinations. …
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Digital pre-compensation for faulty D/A converters : the "missing pixel" problem
… a closed-form solution using the method of Lagrange multipliers. Next, we develop an approximation to the optimal solution using discrete prolate spheroidal sequences. We show that the optimal solution is a linear combination of the discrete prolates. The last compensation technique we …
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Issues related to finite element techniques for two dimensional transmission structures
… variational formulation involving the method of Lagrange multipliers, with attention given to the physical basis of the obtained functional. This model is then applied to the problem of determining the propagation constant of a waveguide.
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Mixed variational problems associated with stationary viscous incompressible free boundary flows
… which the pressure and normal stress appear as Lagrange multipliers. Existence and uniqueness results are obtained by using the Ladyzhenskaya-Babuska-Brezzi theory for mixed problems. By analogy with step (3), the dependence of the normal stress on the position of the FB is investigated.
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Passive localization of underwater acoustic beacons
… nonlinear parameter estimation problem, and Lagrange multipliers are introduced to solve for the maximum likelihood estimate of the acoustic beacon's position. An iterative algorithm is developed using range difference measurements to solve for the maximum likelihood estimate of a stationary …
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Analysis of composite moving beams using higher order shear deformation theory
… The essential constraints are applied via Lagrange multipliers. This method is effective for the moving beam problem where the relative support locations change with time and therefore the supports do not fall exactly at the nodes. An initially deformed overhang beam moving over two simple …
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