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1977

Volume 19, Issue 4, pp. vi-790


Errata: The Korteweg—de Vries Equations: A Survey of Results

Robert M. Miura

SIAM Rev. 19, pp. vi-vi ( pages)

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Errata: Fixed Point Theorems and Nonlinear Eigenvalue Problems in Ordered Banach Spaces

Herbert Amann

SIAM Rev. 19, pp. vii-vii ( pages)

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Formal Approximations and Singular Perturbations

Wiktor Eckhaus

SIAM Rev. 19, pp. 593-633 (41 pages) | Cited 4 times

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The problem of proving the validity of a formal approximation as an asymptotic approximation in singular perturbation problems is studied in a general formulation. Various ramifications of the problem are investigated; pathologies and peculiarities of singular behavior are illustrated by simple examples. The analysis leads to a classification of singular perturbations. A survey of methods and results concerning estimates of solutions of singularly perturbed linear elliptic and parabolic problems is presented in the Appendix.

On the Perturbation of Pseudo-Inverses, Projections and Linear Least Squares Problems

G. W. Stewart

SIAM Rev. 19, pp. 634-662 (29 pages) | Cited 79 times

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This paper surveys perturbation theory for the pseudo–inverse (Moore–Penrose generalized inverse), for the orthogonal projection onto the column space of a matrix, and for the linear least squares problem.

Nonlinear Evolution Equations—Continuous and Discrete

Mark J. Ablowitz

SIAM Rev. 19, pp. 663-684 (22 pages) | Cited 15 times

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An important recent advance in nonlinear wave motion has been the discovery of a method of solution to a class of nonlinear evolution equations. The technique relies on a relation between the evolution equation, and an associated linear eigenvalue (scattering) problem. The initial value solution is found by the method of inverse scattering. In this paper, procedures are outlined which systematically isolate certain nonlinear evolution equations which fit into the above methodology. As examples of the ideas, the partial differential nonlinear Schrodinger and a differential-difference nonlinear Schrodinger equation are considered in detail. Some of the other physically important evolution equations are enumerated and an analogy to Fourier analysis is brought out.

Dynamic Optimal Control Models in Advertising: a Survey

Suresh P. Sethi

SIAM Rev. 19, pp. 685-725 (41 pages) | Cited 65 times

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The last ten years have seen a growing number of optimal control theory applications to the field of advertising. This paper presents an up-to-date survey of dynamic optimal control models in advertising that have appeared in the literature.
The basic problem underlying these models is an optimal control problem to determine the optimal rate of advertising expenditures over time in a way that maximizes the present value of a firm’s net profit streams over a finite or infinite horizon. The profit depends on sales (or an appropriate surrogate), the state variable and the rate of advertising expenditures, the control variable. Sales, in turn, is related to advertising expenditures via a differential or difference equation termed a state equation.
The models covered in this survey are organized under four headings: advertising capital models, sales-advertising response models, micromodels, and control-theoretic empirical studies. The discussion involves specifications, methods used, results and the economic significance of various models.The survey concludes with suggestions for extensions and future direction of research.

Announcement

SIAM Rev. 19, pp. 726-726 (1 page)

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The Pig House Problem or the Detection and Measurement of Pairwise Associations

R. C. Grimson

SIAM Rev. 19, pp. 727-731 (5 pages)

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A Model for Drug Concentration

L. E. Thomas

SIAM Rev. 19, pp. 732-735 (4 pages)

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A model, suitable for classroom use, is developed to describe the concentration of a drug in the body when the drug is administered repeatedly. The model shows that under certain conditions there are limiting values for the maximum and minimum concentrations of the drug in the system. Cases of random detoxification and enzymatic detoxification are discussed.

A First Order Nonlinear Differential Equation

I. Rubinstein

SIAM Rev. 19, pp. 736-736 (1 page)

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A System of Second Order Differential Equations

L. Carlitz

SIAM Rev. 19, pp. 736-736 (1 page)

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An Infinite Summation

A. M. Liebetrau

SIAM Rev. 19, pp. 736-737 (2 pages)

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Two Inequalities

P. Barrucand

SIAM Rev. 19, pp. 737-737 (1 page)

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When is the Modified Bessel Function Equal to Its Derivative?

I. NÃ¥sell

SIAM Rev. 19, pp. 737-737 (1 page)

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A Polynomial Inequality (K. B. Stolarsky and L. J. Yang)

L. J. Yang

SIAM Rev. 19, pp. 737-739 (3 pages)

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A Reverse Card Shuffle (David Berman and M. S. Klamkin)

D. E. Knuth

SIAM Rev. 19, pp. 739-740 (2 pages)

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A Monotonicity Property for Moments (A. A. Jagers)

I. Olkin

SIAM Rev. 19, pp. 741-742 (2 pages)

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On the Extreme Eigenvalues of an $n \times n$ Matrix (L. B. Bushard)

Dennis C. Jespersen

SIAM Rev. 19, pp. 742-743 (2 pages)

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A Zero Of Maximum Multiplicity (N. Liron and L. A. Rubenfeld)

w. B. Jordan

SIAM Rev. 19, pp. 743-744 (2 pages)

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Fourier Analysis of Time Series: An Introduction (Peter Bloomfield)

Ralph A. Willoughby

SIAM Rev. 19, pp. 745-746 (2 pages)

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Syntactic Methods in Pattern Recognition (K. S. Fu)

Patrick Suppes

SIAM Rev. 19, pp. 746-746 (1 page)

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Theoretical Statistics (D. R. Cox and D. V. Hinkley)

Howard Reinhardt

SIAM Rev. 19, pp. 746-747 (2 pages)

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Continuum Mechanics of Viscoelastic Liquids (R. R. Huilgol)

F. Oberhettinger

SIAM Rev. 19, pp. 747-749 (3 pages)

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Ordinary Differential Equations in the Complex Domain (Einar Hills)

Wilfred Kaplan

SIAM Rev. 19, pp. 749-749 (1 page)

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Treatise on Analysis, Vol. IV (J. Dieudonné)

Robert Hermann

SIAM Rev. 19, pp. 750-750 (1 page)

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Optimization Theory; The Finite Dimensional Case (Magnus R. Hestenes)

Jane Cullum

SIAM Rev. 19, pp. 750-752 (3 pages)

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Statistical Techniques in Simulation, Part II (Jack P. C. Kleijnen)

Nils Blomqvist

SIAM Rev. 19, pp. 752-753 (2 pages)

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Applications of Fuzzy Sets to Systems Analysis (C. V. Negoita and R. A. Ralescu)

Michael A. Arbib

SIAM Rev. 19, pp. 753-753 (1 page)

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Other Books Received

SIAM Rev. 19, pp. 754-758 (5 pages)

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SIAM 1976 Fall Meeting

SIAM Rev. 19, pp. 759-783 (25 pages)

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New mwmbers

SIAM Rev. 19, pp. 784-785 (2 pages)

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Society for Industrial and Applied Mathematics

SIAM Rev. 19, pp. 786-789 (4 pages)

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Treasurer’s Report

SIAM Rev. 19, pp. 790-790 (1 page)

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