Calculus Of The Variations
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Una introducción a la derivada desde la variación y el cambio: resultados de una investigación con estudiantes de primer año de la universidad
The study of calculus plays an important role when it is necessary to quantify or measure any phenomenon. However, in general, in the educational system, formal construction processes and algorithmic aspects have been prioritized. Seeking to answer this problem, an investigation addressing the study of the derivative was started. The work was framed from the
Bolema. Publicado em: 2014-04
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2. Hypersurfaces with prescribed mean curvature in Riemannian manifolds / HipersuperfÃcies com curvatura mÃdia prescrita em variedades riemannianas
This work shows results existence and uniqueness of graphs with prescribed mean curvature. We demonstrate that a natural fixation Dirichlet problem for graphs of average curvature is required to consider those graphs like leaves on a Riemannian submersion Killing transversal cylinder, the cylinder given by flow lines of a Killing vector field. Using this app
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2010
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3. Sobre uma classe de equações semilineares do tipo logística/ Adriano Alves de Medeiros.
In this work we study a class of semilinear equations of the logistic type. More precisely, we consider the homogeneous and inhomogeneous cases. In the homogeneous case, we discuss the existence, nonexistence and uniqueness of positive solution as well the decay at infinity. The existence is obtained by using the method of sub-super solutions. In the inhomog
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/07/2010
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4. Cálculos de substituições explícitas à La Bruijn com sistemas de tipos com interseção
The ג-calculus is a well known theoretical computation model as old as the concept of computable functions. Due to the substitution definition as a meta-operator there exists a great quantity of variations of this computational system in which the operation of substitution is treated explicitly. In this work we investigate intersection type systems for
Publicado em: 2010
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5. Comparação do desempenho do secador roto-fluidizado com o secador rotatório convencional : secagem de fertilizantes
The objective of this work was to analyze the phenomena of mass and energy transfer between heat air and the granulated simple super-phosphate in rotary dryers in the versions: conventional with cascading and roto-fluidized. A study of fluid dynamics of flowing of particles in conventional rotary dryers was made with objective of determine the conditions tha
Publicado em: 2008
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6. A limit-method for solving period problems on minimal surfaces / Metodo limite para solução de problemas de periodos em superficies minimas
In this work we present the study and construction of minimal surfaces through an exclusive method. In 1762, Lagrange introduced the Minimal Surfaces Diferential Equation through the Calculus of Variations, and today the theory of such surfaces builds up an active and broad research area. We obtain new families of minimal surfaces based upon the Reverse Cons
Publicado em: 2007
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7. Existencia e multiplicidade de soluções para a Equação de Schrodinger não-linear em Rn / Existence and multiplicity of solutions for the non-linear Schrodinger Equation in Rn
In this dissertation we get resulted of multiplicity of not trivial weak solutions for the problem -Du + V (x)u = f (x; u); x 2 RN; where V is continuous, f is C1, with f (x; 0) = 0 and f is asymptotically linear. We use variationals methods and the theory of critical groups, to get and to distinguish the solutions. We also present results of existence of no
Publicado em: 2007
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8. MAGNETOIMPEDÂNCIA E DINÂMICA DA MAGNETIZAÇÃO EM NANOESTRUTURAS FERROMAGNETO / Cu (Ag) / FERROMAGNETO
In this work the static and dynamic magnetic properties are investigated in FM/i/Cu(Ag)/i/FM tri-layer structured samples where FM is the ferromagnetic multilayer and i is the SiO2 isolating layer. All samples have been deposited by magnetron sputtering on a glass substrate with a 50 Å Ta buffer layer. The models proposed by L. Spinu for the calculus of the
Publicado em: 2007
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9. A Contribuição de José Saturnino da Costa Pereira para o Cálculo das Variações
In this work we present, a brief story on the history of the Calculus of the Variations, as well as, some of the mathematicians who had directly contributed so that he had the development, of that are an area of the widely studied Mathematics since its sprouting. We also present, the context of the time where this subject was developed in Brazil, as well as
Publicado em: 2006
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10. CÃlculo variacional e aplicaÃÃes à mecÃnica celeste
A presente dissertaÃÃo intitulada "CÃlculo Variacional e AplicaÃÃes à MecÃnica Celeste", tem como objetivo fazer um estudo dos resultados bÃsicos do CÃlculo Variacional para posteriormente aplicÃ-los ao estudo de propriedades minimizantes das Ãrbitas elÃpticas no problema de Kepler e na existÃncia de soluÃÃes periÃdicas com restriÃÃes topol
Publicado em: 2003
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11. MATERIAL MOMENTUM-ENERGY TENSORS AND THE CALCULUS OF VARIATIONS*
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12. DYNAMIC PROGRAMMING AND A NEW FORMALISM IN THE CALCULUS OF VARIATIONS