Golden Section
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Radionuclídeos como marcadores de um novo tempo: o Antropoceno
On May 2019, the members of the Anthropocene Working Group completed a binding vote to affirm some of the key questions that have been agreed in 2016: the Anthropocene should be considered as a formal chronostratigraphic unit, defined by a Global Boundary Stratotype Section and Point (GSSP), using one of the stratigraphic signals around the mid-twentieth cen
Quím. Nova. Publicado em: 2020-04
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2. A computational framework for predicting onset and crack propagation in composite structures via eXtended Finite Element Method (XFEM)
Abstract The eXtended Finite Element Method (XFEM) has been reliably used for analyzing crack growth in 3D structural elements over last years. In fact, many researchers have worked in this field, but it is scarce to find scientific contributions about 3D XFEM models applied to the failure of non-standard composite parts, such as tapered structures and thick
Lat. Am. j. solids struct.. Publicado em: 29/10/2018
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3. Analysis of reverse heat transfer for conventional and optimized lubri-cooling methods during tangential surface grinding of ABNT 1020 steel
Abstract A numerical thermal model was developed to evaluate the heat flux which is conducted to a rectangular workpiece of steel plate ABNT 1020, thus making it possible to compute the maximum temperature in the grinding surface, taking into account the rectangular distribution of heat flux, the thermal properties of the grinding wheel conventional Al2O3, t
REM, Int. Eng. J.. Publicado em: 2016-12
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4. A non-standard optimal control problem arising in an economics application
A recent optimal control problem in the area of economics has mathematical properties that do not fall into the standard optimal control problem formulation. In our problem the state value at the final time the state, y(T) = z, is free and unknown, and additionally the Lagrangian integrand in the functional is a piecewise constant function of the unknown val
Pesqui. Oper.. Publicado em: 2013-04
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5. Thermal effusivity estimation of polymers in time domain
An accurate knowledge of thermophysical properties is very important, for example, to optimize the engineering design and the development of new materials for many applications. Thermal effusivity is a thermal property which presents an increasing importance in heat conduction problems. This property indicates the amount of thermal energy that a material is
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12
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6. Coesão e proporções nos improvisos para piano de Camargo Guarnieri.
This work addresses questions related to the analysis of proportions, its possible role in organizing the structures of musical discourse and its relationship with the coherence of this discourse through an investigation of the elements that establish cohesion and coherence among the pieces that make up the set of ten Improvisos para piano by Camargo Guarnie
Publicado em: 2007
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7. A solução elegante de Lacan: uma formalização do "Além do Princípio do Prazer"
We took as a starting point in our work, Jacques Lacan.s writing On a Question Prior to Any Possible Treatment of Psychosis. Our investigation was centered on the study of the mathematical elements found on Scheme R and Scheme I, considered by Lacan as topologies referred to how reality is constituted in neurosis and psychosis, respectively. In both schemes
Publicado em: 2006
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8. Seção áurea: um contexto para desenvolver a noção de incomensurabiblidade de segmentos de reta / Golden section: a context to develop the notion of incommensurability of straight line segments
O presente estudo foi realizado com o objetivo de contribuir para a formação inicial de professores de Matemática, propondo a utilização da seção áurea como contexto para explorar a noção de incomensurabilidade de segmentos de reta. Tomando como referencial teórico a noção de jogos de quadros, introduzida por Douady (1986) na Didática da Matem�
Publicado em: 2005
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9. A COMUNICABILIDADE nas peças dodecafônicas para flauta e piano de César Guerra Peixe
This study is an analysis of two twelve-tone pieces Música (1944) and Allegretto con moto (1945) for flute and piano, composed by the Brazilian composer César Guerra Peixe. Its aim is to identify the presence of elements of communicability, as it was defined by the composer in his Memorial. The pieces are structured, mainly, through the repetition of motif
Publicado em: 2005
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10. Investigação biométrica em imagens digitais para detecção de faces humanas através da proporção divina / Biometric investigation in digital images for the detection of human faces by divine proportion
The increase of recognition systems in the contemporary world has demanded robust and agile detection processes. From teleconference systems to security and monitoring mechanisms, the detection and recognition of people have became constantly used and applied. In attempt to search for alternative ways to solve both detection and recognition problems, this wo
Publicado em: 2004
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11. Thermal properties estimation of polymers using only one Active Surface
This work describes an experimental technique for obtaining, simultaneously, the thermal diffusivity and thermal conductivity of polymer materials. This technique uses experimental data from only one of the sample surfaces. It means functions using experimental and calculated temperature are defined. An objective function representing the eigenvalue phase an
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-03