Results 21 to 30 of about 1,975,441 (290)
Method for Generating Additive Shape Invariant Potentials from an Euler Equation [PDF]
, 2011 In the supersymmetric quantum mechanics formalism, the shape invariance condition provides a sufficient constraint to make a quantum mechanical problem solvable; i.e., we can determine its eigenvalues and eigenfunctions algebraically.
Asim Gangopadhyaya +19 more
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Lifetime Models with Nonconstant Shape Parameters
Revstat Statistical Journal, 2003 In its standard form, a lifetime regression model usually assumes that the time until an event occurs has a constant shape parameter and a scale parameter that is a function of covariates. In this paper we consider lifetime models with shape parameter dependent on a vector of covariates.
Josmar Mazucheli +2 more
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Mechanics & Industry, 2023 The shape optimization design of the developable surface is an important research topic in CAD/CAM, and it is widely used in engineering manufacturing.
Lu Jing +3 more
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Revstat Statistical Journal, 2015 Regression procedures are often used for estimating distributional parameters because of their computational simplicity and useful graphical presentation. However, the resulting regression model may have heteroscedasticity and/or correction problems and
Yeliz Mert Kantar
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Quasi-Bézier Curves with Shape Parameters [PDF]
Journal of Applied Mathematics, 2013 The universal form of univariate Quasi-Bézier basis functions with multiple shape parameters and a series of corresponding Quasi-Bézier curves were constructed step-by-step in this paper, using the method of undetermined coefficients. The series of Quasi-Bézier curves had geometric and affine invariability, convex hull property, symmetry, interpolation
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New Trigonometric Basis Possessing Denominator Shape Parameters [PDF]
Mathematical Problems in Engineering, 2018 Four new trigonometric Bernstein-like bases with two denominator shape parameters (DTB-like basis) are constructed, based on which a kind of trigonometric Bézier-like curve with two denominator shape parameters (DTB-like curves) that are analogous to the cubic Bézier curves is proposed.
Kai Wang, Guicang Zhang
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Entropy, 2020 This paper presents theory and simulation of viscous dissipation in evolving interfaces and membranes under kinematic conditions, known as astigmatic flow, ubiquitous during growth processes in nature. The essential aim is to characterize and explain the
Ziheng Wang +2 more
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DETERMINATION OF SHAPE PARAMETER IN RBF APPROXIMATION [PDF]
WIT Transactions on Engineering Sciences, 2018 162
Karageorghis, Andreas +3 more
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A Direct Prediction of the Shape Parameter in the Collocation Method of Solving Poisson Equation
Mathematics, 2022 In this paper, we totally discard the traditional trial-and-error algorithms of choosing the acceptable shape parameter c in the multiquadrics −c2+∥x∥2 when dealing with differential equations, for example, the Poisson equation, with the RBF collocation ...
Lin-Tian Luh
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Reproducing kernel Hilbert spaces and variable metric algorithms in PDE constrained shape optimisation [PDF]
, 2016 In this paper we investigate and compare different gradient algorithms designed for the domain expression of the shape derivative. Our main focus is to examine the usefulness of kernel reproducing Hilbert spaces for PDE constrained shape optimisation ...
Eigel, Martin, Sturm, Kevin
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