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Interpolation Processes

Interpolation Processes PDF Author: Giuseppe Mastroianni
Publisher: Springer Science & Business Media
ISBN: 3540683496
Category : Mathematics
Languages : en
Pages : 452

Book Description
Interpolation of functions is one of the basic part of Approximation Theory. There are many books on approximation theory, including interpolation methods that - peared in the last fty years, but a few of them are devoted only to interpolation processes. An example is the book of J. Szabados and P. Vértesi: Interpolation of Functions, published in 1990 by World Scienti c. Also, two books deal with a special interpolation problem, the so-called Birkhoff interpolation, written by G.G. Lorentz, K. Jetter, S.D. Riemenschneider (1983) and Y.G. Shi (2003). The classical books on interpolation address numerous negative results, i.e., - sultsondivergentinterpolationprocesses,usuallyconstructedoversomeequidistant system of nodes. The present book deals mainly with new results on convergent - terpolation processes in uniform norm, for algebraic and trigonometric polynomials, not yet published in other textbooks and monographs on approximation theory and numerical mathematics. Basic tools in this eld (orthogonal polynomials, moduli of smoothness,K-functionals, etc.), as well as some selected applications in numerical integration, integral equations, moment-preserving approximation and summation of slowly convergent series are also given. The rstchapterprovidesanaccountofbasicfactsonapproximationbyalgebraic and trigonometric polynomials introducing the most important concepts on appro- mation of functions. Especially, in Sect. 1.4 we give basic results on interpolation by algebraic polynomials, including representations and computation of interpolation polynomials, Lagrange operators, interpolation errors and uniform convergence in some important classes of functions, as well as an account on the Lebesgue function and some estimates for the Lebesgue constant.

Interpolation Processes

Interpolation Processes PDF Author: Giuseppe Mastroianni
Publisher: Springer Science & Business Media
ISBN: 3540683496
Category : Mathematics
Languages : en
Pages : 452

Book Description
Interpolation of functions is one of the basic part of Approximation Theory. There are many books on approximation theory, including interpolation methods that - peared in the last fty years, but a few of them are devoted only to interpolation processes. An example is the book of J. Szabados and P. Vértesi: Interpolation of Functions, published in 1990 by World Scienti c. Also, two books deal with a special interpolation problem, the so-called Birkhoff interpolation, written by G.G. Lorentz, K. Jetter, S.D. Riemenschneider (1983) and Y.G. Shi (2003). The classical books on interpolation address numerous negative results, i.e., - sultsondivergentinterpolationprocesses,usuallyconstructedoversomeequidistant system of nodes. The present book deals mainly with new results on convergent - terpolation processes in uniform norm, for algebraic and trigonometric polynomials, not yet published in other textbooks and monographs on approximation theory and numerical mathematics. Basic tools in this eld (orthogonal polynomials, moduli of smoothness,K-functionals, etc.), as well as some selected applications in numerical integration, integral equations, moment-preserving approximation and summation of slowly convergent series are also given. The rstchapterprovidesanaccountofbasicfactsonapproximationbyalgebraic and trigonometric polynomials introducing the most important concepts on appro- mation of functions. Especially, in Sect. 1.4 we give basic results on interpolation by algebraic polynomials, including representations and computation of interpolation polynomials, Lagrange operators, interpolation errors and uniform convergence in some important classes of functions, as well as an account on the Lebesgue function and some estimates for the Lebesgue constant.

Smoothed Point Interpolation Methods

Smoothed Point Interpolation Methods PDF Author: G R Liu
Publisher: World Scientific
ISBN: 9814452866
Category : Technology & Engineering
Languages : en
Pages : 696

Book Description
Based on the widely used finite element method (FEM) and the latest Meshfree methods, a next generation of numerical method called Smoothed Point Interpolation Method (S-PIM) has been recently developed. The S-PIM is an innovative and effective combination of the FEM and the meshfree methods, and enables automation in computation, modeling and simulations — one of the most important features of the next generation methods. This important book describes the various S-PIM models in a systematic, concise and easy-to-understand manner. The underlying principles for the next generation of computational methods, G space theory, novel weakened weak (W2) formulations, techniques for shape functions, formulation procedures, and implementation strategies are presented in detail. Numerous examples are provided to demonstrate the efficiency and accuracy of the S-PIM solutions in comparison with the FEM and other existing methods. Effective techniques to compute solution bounds employing both S-PIM and FEM are highlighted to obtain certified solutions with both upper and lower bounds. The book also presents a systematically way to conduct adaptive analysis for solutions of desired accuracy using these bound properties, which is another key feature of the next generation of computational methods. This will benefit researchers, engineers and students who are venturing into new areas of research and computer code development. Contents:PreliminariesG SpacesPIM Shape Function CreationStrain Field ConstructionWeak and Weakened Weak FormulationsNode-Based Smoothed Point Interpolation Method (NS-PIM)Edge-Based Smoothed Point Interpolation Method (ES-PIM)Cell-Based Smoothed Point Interpolation Method (CS-PIM)The Cell-Based Smoothed Alpha Radial Point Interpolation Method (CS-αRPIM)Strain-Constructed Point Interpolation Method (SC-PIM)S-PIM for Heat Transfer and Thermoelasticity ProblemsSingular CS-RPIM for Fracture Mechanics ProblemsAdaptive Analysis Using S-PIMsAppendices: Program Codes Library:Description of the SubroutinesA Demonstration Input FileSource Codes of Two ModulesSource Codes of the Common Subroutines Readership: Researchers, practitioners, academics, and graduate students in engineering mechanics, mechanical engineering, aerospace engineering, civil engineering and computational physics. Keywords:Numerical Method;Meshfree Method;Finite Element Method;Point Interpolation Method;G Space;Weakened Weak Form;Applied Mechanics;Adaptive Analysis;Radial Basis Functions;Radial Point Interpolation Method

Smoothed Point Interpolation Methods

Smoothed Point Interpolation Methods PDF Author: Gui-Rong Liu
Publisher: World Scientific
ISBN: 9814452858
Category : Mathematics
Languages : en
Pages : 697

Book Description
This book describes the various Smoothed Point Interpolation Method (S-PIM) models in a systematic, concise and easy-to-understand manner. The underlying principles for the next generation of computational methods, G space theory, novel weakened weak (W2) formulations, techniques for shape functions, formulation procedures, and implementation strategies are presented in detail.

Interpolation Theory

Interpolation Theory PDF Author: Alessandra Lunardi
Publisher: Springer
ISBN: 8876426388
Category : Mathematics
Languages : en
Pages : 199

Book Description
This book is the third edition of the 1999 lecture notes of the courses on interpolation theory that the author delivered at the Scuola Normale in 1998 and 1999. In the mathematical literature there are many good books on the subject, but none of them is very elementary, and in many cases the basic principles are hidden below great generality. In this book the principles of interpolation theory are illustrated aiming at simplification rather than at generality. The abstract theory is reduced as far as possible, and many examples and applications are given, especially to operator theory and to regularity in partial differential equations. Moreover the treatment is self-contained, the only prerequisite being the knowledge of basic functional analysis.

Interpolation and Approximation

Interpolation and Approximation PDF Author: Philip J. Davis
Publisher: Courier Corporation
ISBN: 0486624951
Category : Mathematics
Languages : en
Pages : 418

Book Description
Intermediate-level survey covers remainder theory, convergence theorems, and uniform and best approximation. Other topics include least square approximation, Hilbert space, orthogonal polynomials, theory of closure and completeness, and more. 1963 edition.

Comparison of Interpolation Methods as Applied to Time Synchronous Averaging

Comparison of Interpolation Methods as Applied to Time Synchronous Averaging PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14

Book Description
Several interpolation techniques were investigated to determine their effect on time synchronous averaging of gear vibration signals and also the effects on standard health monitoring diagnostic parameters. The data was also digitally resampled to determine the effect of lower acquisition rates. The analysis used previously recorded vibration data taken during Health and Usage Monitoring gear testing at the NASA Glenn Research Center. The gear testing monitored the development of surface pitting fatigue on aerospace quality spur gears. Linear, cubic and spline interpolation methods were investigated. Comparisons between the resultant averages show that while there are differences in the resultant time synchronous averages, the differences are not obvious. The diagnostic parameters tested were FM4 and NA4. There are significant differences in the percent deviation curves which imply that the magnitudes of the errors increase as the sample rate decreases.

Application of Spline Interpolation Methods to Engineering Problems

Application of Spline Interpolation Methods to Engineering Problems PDF Author: James B. Cheek
Publisher:
ISBN:
Category : Curve fitting
Languages : en
Pages : 62

Book Description
This paper was prepared to familiarize practicing scientists and engineers with the cubic spline interpolation technique as a possible tool in curve fitting for computer programs for which more commonly used techniques may be unsuitable or of limited value. The spline technique is compared with more common methods, specifically piecewise linear and polynomial, and examples of applications of the technique to engineering problems are presented.

Bilinear Interpolation

Bilinear Interpolation PDF Author: Fouad Sabry
Publisher: One Billion Knowledgeable
ISBN:
Category : Computers
Languages : en
Pages : 110

Book Description
What is Bilinear Interpolation In mathematics, bilinear interpolation is a method for interpolating functions of two variables using repeated linear interpolation. It is usually applied to functions sampled on a 2D rectilinear grid, though it can be generalized to functions defined on the vertices of arbitrary convex quadrilaterals. How you will benefit (I) Insights, and validations about the following topics: Chapter 1: Bilinear interpolation Chapter 2: Interpolation Chapter 3: Linear interpolation Chapter 4: Polynomial interpolation Chapter 5: Newton polynomial Chapter 6: Lagrange polynomial Chapter 7: Spline interpolation Chapter 8: Cubic Hermite spline Chapter 9: Trilinear interpolation Chapter 10: Bicubic interpolation (II) Answering the public top questions about bilinear interpolation. (III) Real world examples for the usage of bilinear interpolation in many fields. Who this book is for Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of Bilinear Interpolation.

Interpolation Spaces

Interpolation Spaces PDF Author: J. Bergh
Publisher: Springer Science & Business Media
ISBN: 3642664512
Category : Mathematics
Languages : en
Pages : 218

Book Description
The works of Jaak Peetre constitute the main body of this treatise. Important contributors are also J. L. Lions and A. P. Calderon, not to mention several others. We, the present authors, have thus merely compiled and explained the works of others (with the exception of a few minor contributions of our own). Let us mention the origin of this treatise. A couple of years ago, J. Peetre suggested to the second author, J. Lofstrom, writing a book on interpolation theory and he most generously put at Lofstrom's disposal an unfinished manu script, covering parts of Chapter 1-3 and 5 of this book. Subsequently, LOfstrom prepared a first rough, but relatively complete manuscript of lecture notes. This was then partly rewritten and thouroughly revised by the first author, J. Bergh, who also prepared the notes and comment and most of the exercises. Throughout the work, we have had the good fortune of enjoying Jaak Peetre's kind patronage and invaluable counsel. We want to express our deep gratitude to him. Thanks are also due to our colleagues for their support and help. Finally, we are sincerely grateful to Boe1 Engebrand, Lena Mattsson and Birgit Hoglund for their expert typing of our manuscript.

A Method of Bivariate Interpolation and Smooth Surface Fitting Based on Local Procedures

A Method of Bivariate Interpolation and Smooth Surface Fitting Based on Local Procedures PDF Author: Hiroshi Akima
Publisher:
ISBN:
Category : Interpolation
Languages : en
Pages : 52

Book Description