نتایج جستجو برای: fractional bergman minimal model

تعداد نتایج: 2275389  

باغستانی, احمد رضا, حاجی زاده, ابراهیم, نور کجوری, هدی, پورحسینقلی, محمد‌امین ,

Background & Objectives: Cox regression model is one of the statistical methods in survival analysis. The use of smoothing techniques in Cox model makes the more accurate estimates for the parameters. Fractional polynomial is one of these techniques in Cox model. The aim of this study was to assess the effects of prognostic factors on survival of patients with gastric cancer using the fractiona...

2014
ZHANGJIAN HU KEHE ZHU

Given a bounded strongly pseudoconvex domain D in C with smooth boundary, we characterize (p, q, α)-Bergman Carleson measures for 0 < p < ∞, 0 < q < ∞, and α > −1. As an application, we show that the Bergman space version of the balayage of a Bergman Carleson measure on D belongs to BMO in the Kobayashi metric.

Journal: :journal of mahani mathematical research center 0
esmail hesameddini department of mathematical sciences, shiraz university of technology, p. o. box 71555-313, shiraz, iran mahin azizi department of mathematical sciences, shiraz university of technology, p. o. box 71555-313, shiraz, iran

in this article, a mathematical model describing the growth orterminating myelogenous leukemia blood cancer&apos;s cells against naive t-celland e ective t-cell population of body, presented by fractional di erentialequations. we use this model to analyze the stability of the dynamics, whichoccur in the local interaction of e ector-immune cell and tumor cells. wewill also investigate the optima...

2007
Miroslav Englǐs Miroslav Engliš

Using Fefferman’s classical result on the boundary singularity of the Bergman kernel, we give an analogous description of the boundary behaviour of various related quantities like the Bergman invariant, the coefficients of the Bergman metric, of the associated Laplace-Beltrami operator, of its curvature tensor, Ricci curvature and scalar curvature. The main point is that even though one would e...

2012
SIQI FU

Estimates of the Bergman kernel and the Bergman and Kobayashi metrics on pseudoconvex domains near boundaries with constant Levi ranks are given. Mathematics Subject Classification (2000): 32F45; 32T27.

2011
XIANG DONG YANG JIN TU

where the coefficients are entire functions. In [8], equations of the form (1) with coefficients in weighted Bergman or Hardy spaces are studied. The direct problem is proved, that is, if the coefficients aj(z), j = 0, ..., k − 1 of (1) belong to the weighted Bergman space, then all solutions are of finite order of growth and belong to weighted Bergman space. The inverse problem is also investi...

2012
ALEXANDER P. SCHUSTER

The goal of this paper is to study two problems of geometric function theory in weighted Bergman spaces in the unit ball B in Cn. We treat both problems by making use of a theorem, which we prove, that gives improved estimates for the solution of minimal L2 norm for the ∂̄ equation. The technique we use to establish these improved estimates is a new method which we call double twisting. The doub...

In this paper fractional order averaged model for DC/DC Buck converter in continues condition mode (CCM) operation is established. DC/DC Buck converter is one of the main components in the wind turbine system which is used in this research. Due to some practical restriction there weren’t exist input voltage and duty cycle of converter therefor whole of the wind system was simulated in Matlab/Si...

2009
V. Maltcev J. D. Mitchell N. Ruškuc

In this article, we study the Bergman property for semigroups and the associated notions of cofinality and strong cofinality. A large part of the paper is devoted to determining when the Bergman property, and the values of the cofinality and strong cofinality, can be passed from semigroups to subsemigroups and vice versa. Numerous examples, including many important semigroups from the literatur...

2004
EVA MARIA FEICHTNER BERND STURMFELS

The tropical variety defined by linear equations with constant coefficients is the Bergman fan of the corresponding matroid. Building on a self-contained introduction to matroid polytopes, we present a geometric construction of the Bergman fan, and we discuss its relationship with the simplicial complex of nested sets in the lattice of flats. The Bergman complex is triangulated by the nested se...

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