Simple Singularity
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Como escolher um exemplo? De qualquer um para qualquer um
Resumo: Como escolher um exemplo? O que se passa como um simples dado pode ser o mais complexo: o critério de escolha. Alguns casos servem de exemplo e outros não. Por quê? O objetivo deste texto é tentar dar algum critério para esse tipo de escolha. O caminho escolhido para tal foi tomar um caso da psicopatologia freudiana: o caso Dora. Por que esse ca
Trans/Form/Ação. Publicado em: 10/01/2020
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2. Singularidades simples de curvas determinantais / Simple singularities of determinantal curves
Neste trabalho, estudamos a classificação de singularidades de curvas espaciais simples que não são intersecções completas. O Teorema de Hilbert-Burch nos permite usar a matriz de representação para estudar a variedade definida pelo ideal gerado por seus menores maximais. Da mesma forma, as deformações da variedade determinantal podem ser represent
Publicado em: 2010
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3. Cicatrizes urbanas: marcas de socialização e formação na cidade em Jataí-GO / Urban Scars: Marks of socialization and training in city Jataí-GO
This paper discuss the city while mediation in the sociability, formation and education process. It considers that the modern city is puts beyond of the place and of the simple people and object agglomerations, as a way of living and where is the specific form of organization of the space in the cultural system of the capitalist industrial society. From this
Publicado em: 2009
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4. Two simple families of exact inhomogeneous stiff cosmologies
Two families of exact simple solutions of Einstein field equations for inhomogeneous stiff cosmologies are presented. The method to obtain the solutions is based on the introduction of auxiliary functions in order to cast the Einstein equations in such a way that can be explicitly integrated. Although the equations are mathematically equivalent to the equati
Brazilian Journal of Physics. Publicado em: 2008-03
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5. MEASURER OF PROPORTIONAL OUTFLOW FOR THE QUANTIFICATION OF THE WATER CONSUMPTION IN THE IRRIGATION / MEDIDOR DE VAZÃO PROPORCIONAL PARA A QUANTIFICAÇÃO DO CONSUMO DE ÁGUA NA IRRIGAÇÃO
The present work had for objective to develop a simple process, with low cost and enough precise for its use in irrigation systems. The measurer consists of a secondary canalization provided with a hydrometer of low outflow installed in parallel with a singularity capable to provoke a pressure difference enters the extreme points of the device. The distingui
Publicado em: 2007
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6. Inexistencia de blow-up hiperbolico simples para a equação quasi-geostrofica
Nonexistence of simple hyperbolic blow-up for the quasigeostrophic equation. This master dissertation deals with the quasigeostrophic equations, a system of integro-differential equations that has been proposed as a model for the process of large-scale front formation in the atmosphere. These equations have a structure that resembles the system of two dimens
Publicado em: 2002
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7. Stability of local rings of dimension 2
The notion of stability of a local ring arises naturally in investigating completed moduli spaces via geometric invariant theory. A scheme corresponding to a boundary point of a moduli space of nonsingular varieties cannot have unstable singular points. This paper reports some results concerning the stability of surface singularities. If a two-dimensional Co
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8. Real time imaging of single fluorophores on moving actin with an epifluorescence microscope.
Relatively simple modifications of an ordinary epifluorescence microscope have greatly reduced its background luminescence, allowing continuous and real time imaging of single fluorophores in an aqueous medium. Main modifications were changing the excitation light path and setting an aperture stop so that stray light does not scatter inside the microscope. A
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9. A pseudo zeta function and the distribution of primes
The Riemann zeta function is given by: \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} \begin{equation*}{\zeta}(s)={ \,\substack{ ^{{\infty}} \\ {\sum} \\ _{n=1} }\, }\hspace{.167em}1/n^{s}={\prod
The National Academy of Sciences.
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10. Thermodynamics of cosmological matter creation
A type of cosmological history that includes large-scale entropy production is proposed. These cosmologies are based on reinterpretation of the matter-energy stress tensor in Einstein's equations. This modifies the usual adiabatic energy conservation laws, thereby including irreversible matter creation. This creation corresponds to an irreversible energy flo
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11. Epigenetic randomness, complexity and singularity of human iris patterns.
We investigated the randomness and uniqueness of human iris patterns by mathematically comparing 2.3 million different pairs of eye images. The phase structure of each iris pattern was extracted by demodulation with quadrature wavelets spanning several scales of analysis. The resulting distribution of phase sequence variation among different eyes was precise
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12. Breeding Value and Variance Component Estimation from Data Containing Inbred Individuals: Application to Gynogenetic Families in Common Carp (Cyprinus Carpio L.)
Under gynogenetic reproduction, offspring receive genes only from their dams and completely homozygous offspring are produced within one generation. When gynogenetic reproduction is applied to fully inbred individuals, homozygous clone lines are produced. A mixed model method was developed for breeding value and variance component estimation in gynogenetic f