Walsh Functions
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Estimativas para entropia de operadores multiplicadores de séries de Walsh / Estimatives for entropy of multiplier operators of Walsh series
As funções de Walsh formam um conjunto ortonormal completo de L2 [0; 1) que pode ser aplicado em diferentes situações tais como transmissão de dados, filtração, enriquecimento de imagem, análise de sinais e reconhecimento de padrão. Inicialmente estudamos alguns resultados básicos da Teoria dos Martingais, tais como a convergência de martingais, a
Publicado em: 2011
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2. Estudo da aplicação e interpretação do teorema virial para moleculas poliatomicas
The virial theorem was applied to the construction of same type of Walsh´s correlation diagrams. When using approximate wave functions (CNDO/2) demonstrated an excellent accordance with the ones obtained experimentally (please note that: Q = 0, ± 1 and A the second line elements of the periodic table). The kinetic energy diagrams constructed to the group o
Publicado em: 1992
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3. Aspectos da natureza da geometria molecular de hidretos DI-E triatomicos
Two words may represent the character of this thesis: MOLECULAR GEOMETRY. The main objective is to analyse the nature of molecular geometry in some di and triatomic hydrides. Methods of empirical, semi-empirical and "ab inito" nature were employed. The thesis is divided in six(6) chapters due to the nature of the methods employed and the analytical scheme us
Publicado em: 1988
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4. NOTE ON DEGREE OF APPROXIMATION TO ANALYTIC FUNCTIONS BY RATIONAL FUNCTIONS WITH PREASSIGNED POLES*
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5. DEGREE OF APPROXIMATION BY BOUNDED HARMONIC FUNCTIONS*
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6. SURPLUS FREE POLES OF APPROXIMATING RATIONAL FUNCTIONS*
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7. NOTE ON THE CONVERGENCE OF APPROXIMATING RATIONAL FUNCTIONS OF PRESCRIBED TYPE
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8. Note on Degree of Convergence of Sequences of Rational Functions of Prescribed Type
This note studies the degree of convergence of various sequences of rational functions of given types which are of best approximation to a given function analytic on a given point set and meromorphic on a larger set. The sequences are conveniently represented by the analog of the Padé table.
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9. Note on the Convergence of Sequences of Rational Functions of Best Approximation to a Meromorphic Function
If the function f(z) is meromorphic at every finite point of the plane, analytic on C: [unk]z[unk] ≤ 1, there are results that can be established concerning the convergence of the sequence Rn(z) of rational functions of each degree n of best approximation to f(z) on C. However, we need to assume certain additional conditions on the convergence of the seque
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10. Cytosine methylation and mammalian development
Programmed methylation and demethylation of regulatory sequences has been proposed to play a central role in vertebrate development. We report here that the methylation status of the 5′ regions of a panel of tissue-specific genes could not be correlated with expression in tissues of fetal and newborn mice. Genes reported to be regulated by reversible methy
Cold Spring Harbor Laboratory Press.
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11. How Often Do Duplicated Genes Evolve New Functions?
A recently duplicated gene can either fix a null allele (becoming a pseudogene) or fix an (advantageous) allele giving a slightly different function, starting it on the road to evolving a new function. Here we examine the relative probabilities of these two events under a simple model. Null alleles are assumed to be neutral; linkage effects are ignored, as a
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12. Selection and Biased Gene Conversion in a Multigene Family: Consequences of Interallelic Bias and Threshold Selection
In a previous paper, I investigated the interactions in a gene family of additive selection and biased gene conversion in a finite population when conversion events are rare. Here I extend my "weak-conversion limit" model by allowing biased interallelic conversion (conversion between alleles at the same locus) of arbitrary frequency and various threshold sel