نتایج جستجو برای: spline

تعداد نتایج: 14020  

Journal: :Computer-Aided Design 2003
Chiew-Lan Tai Shi-Min Hu Qi-Xing Huang

This paper addresses the problem of approximate merging of two adjacent B-spline curves into one B-spline curve. The basic idea of the approach is to find the conditions for precise merging of two B-spline curves, and perturb the control points of the curves by constrained optimization subject to satisfying these conditions. To obtain a merged curve without superfluous knots, we present a new k...

2014
Adil Al - Rammahi

Electronic mail is very important in present time. Many researchers work for designing, improving, securing, fasting, goodness and others fields in electronic mail. This paper introduced new algorithm to use Cantor sets and cubic spline interpolating function in the electronic mail design. Cantor sets used as the area (or domain) of the mail, while spline function used for designing formula. Th...

2005
Leandro dos Santos Coelho Renato Krohling

New approaches of particle swarm optimisation algorithm based on Gaussian and Cauchy distributions to adjust the control points of B-spline neural networks are proposed. B-spline networks are trained by gradient-based methods, which may fall into local minimum during the learning procedure. To overcome the problems encountered by the conventional learning methods, particle swarm optimisation  ...

2007
Scott Kersey Ming-Jun Lai

In this paper we first revisit a classical problem of computing variational splines. We propose to compute local variational splines in the sense that they are interpolatory splines which minimize the energy norm over a subinterval. We shall show that the error between local and global variational spline interpolants decays exponentially over a fixed subinterval as the support of the local vari...

2007
A. K. B. CHAND

This paper generalizes the classical spline using a new construction of spline coalescence hidden variable fractal interpolation function (CHFIF). The derivative of a spline CHFIF is a typical fractal function that is self-affine or non-self-affine depending on the parameters of a nondiagonal iterated function system. Our construction generalizes the construction of Barnsley and Harrington (198...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1390

در پایان نامه حاضر نوعی خاص از معادلات یعنی معادلات دیفرانسیل جزئی سهموی با استفاده از b-spline ها مورد برسی قرار میگیرد سپس یک روش جدید برای حل این نوع معادلات بیان میشود . در پایان نیز روش حاضر با یکی از روش های موجود مقایسه شده و نتایج عددی در دو جدول بیان میشود.

Journal: :Journal of Approximation Theory 2003

Journal: :Journal of Mathematical Analysis and Applications 1983

Journal: :IEEJ Transactions on Electronics, Information and Systems 1994

Journal: :Journal of Approximation Theory 1989

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