Polyhedral Theory
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Angular analysis of two classes of non-polyhedral convex cones: the point of view of optimization theory
There are three related concepts that arise in connection with the angular analysis of a convex cone: antipodality, criticality, and Nash equilibria. These concepts are geometric in nature but they can also be approached from the perspective of optimization theory. A detailed angular analysis of polyhedral convex cones has been carried out in a recent work o
Computational & Applied Mathematics. Publicado em: 2007
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2. Estrutura e propriedades elásticas das fases alpha e gama do ZrW2O8
The crystalline structure and some elastic properties of the alpha and gamma phases of zirconium tungstate, ZrW2O8, were calculated according to Density Functional Theory using the B3LYP functional (DFT/B3LYP). The structure of alpha ZrW2O8, was optimized at different pressures and its elastic constants were estimates. The interatomic iterations, ranked in t
Publicado em: 2007
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3. A study on the polytope and lower bounds of the representatives coloring formulation / Um estudo do politopo e dos limites inferiores gerados pela formulaÃÃo de coloraÃÃo dos representantes
O problema de coloraÃÃo de vÃrtices à considerado um dos modelos mais estudados em teoria dos grafos pela sua relevÃncia em campos prÃticos e teÃricos. Do ponto de vista teÃrico, o problema de coloraÃÃo à NP - DifÃcil. AlÃm disto, foi classificado entre os problemas mais difÃceis de NP, no sentido de que achar uma aproximaÃÃo para o nÃmero c
Publicado em: 2005
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4. Problemas de proximidade e de caminhos minimos em superficies poliedricas
Shortest Path Planning is the field of Computational Geometry that concerns the determination of feasible shortest paths from a point to another in a given environment. We deal with a directed shortest path problem (DFGP) that minimizes the total work spent to move a body on a polyhedral surface with constant friction coefficient and constant slope in each f
Publicado em: 1998
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5. Analise de suspensões veiculares utilizando tecnicas de controle robusto
This thesis presents an analysis of the H IND. 2 e H IND. INFINITO robust control theory via linear matrix inequalities, and an approach by Youla parametrization of the closed loop transfer matrix, applied to the design of three different vehicular suspension models. The focus is on comparative analyses of the techniques employed rather than on a specific pr
Publicado em: 1998
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6. Sistemas lineares sujeitos a restrições : regulação robusta e alocação regional parcial de polos
Using the theory of positively invariant polyhedral sets, the problem of robust regulation of uncertain linear continuous-time systems, considering symmetrical constraints on the state and control vectors and uncertain domain defined by intervals of A and B matrices, is studied. For computacional solution of this problem, an efficient linear programming appr
Publicado em: 1994