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 57 for “"Maximum Principle"”.
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Optimizaton of systems reliability by the discrete maximum principle
LD2668 .T4 1967 B172
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Optimizaton of systems reliability by the discrete maximum principle
LD2668 .T4 1967 B172
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Maximum principle, mean value operators and quasi boundedness in non-euclidean settings
… by Kogoj and Lanconelli in [KL00], we show a Maximum Principle for linear second order differential operators for which we only assume a Sobolev-type inequality together with a lower terms summability. Adding some crucial hypotheses on measure and on vector fields (Doubling property and …
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Dynamics and optimal harvesting of prey-predator fishery models in the presence of a toxicant using pontryagin maximum principle
… in this thesis give better understanding of the maximum thresholds of harvesting before the fish populations are driven to extinction. This thesis serves as a platform to investigate the optimal tradeoff of harvesting fisheries
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A strong maximum principle for reaction-diffusion systems and a weak convergence scheme for reflected stochastic differential equations by Lawrence Christopher Evans.
… of two results. The first result is a strong maximum principle for certain parabolic systems of equations, which, for illustrative purposes, I consider as reaction-diffusion systems. Using the theory of viscosity solutions, I give a proof which extends the previous theorem to no longer require …
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Condições de otimalidade para sistemas discretos no tempo com controle limitado pelo Estado
… is followed by a developnent of the discrete maximum principle, presented in the manner of Cannon, Cullum and Polak. [6]. Examples are given to show that the maximurn principle usually does not hold in the case of state constrained controls and an "inclusion hypotheses" is given, demonstrating …
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Aplicação de técnicas de controle a sistemas de produção
… models of production systems. Pontryagin's maximum principle is used. Some interpretatios are given and some applications of the maximum principle to Industrial Dynamics models are made. It is verified the great amount of difficulties one has in applying optimal control techniques to …
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Non-collapsing on Hypersurfaces of Prescribed Curvature
… which is based on the application of the maximum principle to a two-point function that is defined on manifolds or relies on some global information of partial differential equations PDEs. This approach is utilized in order to acquire some useful knowledge on the behaviour of geometric …
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Non-collapsing on Hypersurfaces of Prescribed Curvature
… which is based on the application of the maximum principle to a two-point function that is defined on manifolds or relies on some global information of partial differential equations PDEs. This approach is utilized in order to acquire some useful knowledge on the behaviour of geometric …
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Optimal control problems, curves of pursuit
… control problems. After describing the two main principles to study optimal control problems, namely Pontryagin's maximum principle and Bellman's method of dynamic programming, this thesis focuses on specific examples of PE problems within the classes of pursuit problems, evasion problems, and …
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Optimal control of a biological waste-water treatment plant
… analytically with the use of Pontryagin's Maximum Principle.
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Optimal Linear Feedback Control for Incompressible Fluid Flow
… Necessary conditions are derived by applying the Maximum Principle and have the form of constrained Riccati equations. We consider two approaches for solving the feedback control problem as well as practical numerical methods. Numerical studies using examples derived from a constrained heat …
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An application of optimal control theory in welfare economics
… optimization problem by applying the Pontryagin maximum principle. We consider an autarky and a command economy. We explore the interaction of impatience and productivity in autarky and the implications of different maxims of distributive justice in a command economy.
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Positive-off-diagonal Operators on Ordered Normed Spaces and Maximum Principles for M-Operators
… that its (positive) inverse satisfies certain maximum principles? We deal with generalizations of the "maximum principle for inverse column entries".
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Manipulation and mechanics of thin elastic objects
… In the first application, the Pontryagin maximum principle is used to analyze curvature discontinuities observed in inextensible surfaces. In the second application, the Pontryagin maximum principle is used to derive constitutive equations for an elastic rod subject to a local injectivity …
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Cooperative Power-Limited Optimal Rendezvous Between Many Spacecraft
… and non cooperative maneuvers are studied. The maximum principle of Pontryagin is applied to the optimal control rendezvous problem of several spacecraft. The gravitational field models investigated are the Clohessy-Wiltshire field and the inverse-square gravity field. Numerical solutions using …
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Regularity of Neumann solutions to an elliptic free boundary problem
… In higher dimensions, the proof is via a maximum principle estimate for ...
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Degenerate Monge-Ampere equations over projective manifolds
… are applied to study this problem. One is maximum principle type of argument. The other one makes use of pluripotential theory. So this article mainly consists of three parts. In the first two parts, we apply these two kinds of arguments separately and get some results. In the last part, we …
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Advanced liquid-liquid extraction : studies in a laboratory mixer-settler
… agreement with this model. The discrete maximum principle has been applied to optimize the countercurrent extraction process and proved to be highly successful in predicting the optimum operating conditions which were confirmed by the experimental results. The temperature has proved to be …
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