Powers, David L.
Overview
Works:  28 works in 113 publications in 2 languages and 3,257 library holdings 

Genres:  Textbooks 
Roles:  Author 
Classifications:  QA379, 515.353 
Publication Timeline
.
Most widely held works by
David L Powers
Boundary value problems by
David L Powers(
Book
)
66 editions published between 1972 and 2010 in 3 languages and held by 1,319 WorldCat member libraries worldwide
"Boundary Value Problems is the leading text on boundary value problems and Fourier series for professionals and students in engineering, science, and mathematics who work with partial differential equations. In this update classic, author David Powers provides a thorough overview of solving boundary value problems involving partial differential equations by separation of variables. Additional techniques used include Laplace transform and numerical methods. This edition offers a thorough treatment of one dimensional models before introducing more complicated problems."Jacket
66 editions published between 1972 and 2010 in 3 languages and held by 1,319 WorldCat member libraries worldwide
"Boundary Value Problems is the leading text on boundary value problems and Fourier series for professionals and students in engineering, science, and mathematics who work with partial differential equations. In this update classic, author David Powers provides a thorough overview of solving boundary value problems involving partial differential equations by separation of variables. Additional techniques used include Laplace transform and numerical methods. This edition offers a thorough treatment of one dimensional models before introducing more complicated problems."Jacket
Zerosymmetric graphs : trivalent graphical regular representations of groups by
H. S. M Coxeter(
Book
)
13 editions published in 1981 in English and Undetermined and held by 296 WorldCat member libraries worldwide
13 editions published in 1981 in English and Undetermined and held by 296 WorldCat member libraries worldwide
Elementary differential equations with boundary value problems by
David L Powers(
Book
)
7 editions published between 1985 and 1987 in English and held by 198 WorldCat member libraries worldwide
7 editions published between 1985 and 1987 in English and held by 198 WorldCat member libraries worldwide
Highway investment analysis package volume II, technical manual by Richard D Juster(
Book
)
1 edition published in 1981 in English and held by 5 WorldCat member libraries worldwide
1 edition published in 1981 in English and held by 5 WorldCat member libraries worldwide
Highway investment analysis package volume III, computer user's guide by Richard D Juster(
Book
)
1 edition published in 1981 in English and held by 5 WorldCat member libraries worldwide
1 edition published in 1981 in English and held by 5 WorldCat member libraries worldwide
Instructor's manual for boundary value problems by
David L Powers(
Book
)
2 editions published in 1979 in English and held by 3 WorldCat member libraries worldwide
2 editions published in 1979 in English and held by 3 WorldCat member libraries worldwide
SHOE: the extraction of hierarchical structure for machine learning of natural language by
David L Powers(
Book
)
1 edition published in 1991 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 1991 in English and held by 2 WorldCat member libraries worldwide
Student's partial solutions manual to accompany Elementary differential equations by
David L Powers(
Book
)
1 edition published in 1987 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 1987 in English and held by 2 WorldCat member libraries worldwide
Boundary value problems by
David L Powers(
Book
)
1 edition published in 1979 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 1979 in English and held by 2 WorldCat member libraries worldwide
Eigenvectors of DistanceRegular Graphs(
Book
)
1 edition published in 1987 in English and held by 1 WorldCat member library worldwide
The objective of this work is to find properties of a distanceregular graph G that are expressed in the eigenvectors of its adjacency matrix. The approach is to consider the rows of a matrix of orthogonal eigencolumns as (coordinates of) points in euclidean space, each one corresponding to a vertex of G. For the second eigenvalue, the symmetry group of the points is isomorphic to the automorphism group of G. Adjacency of vertices is related to linear dependence, linear independence and proximity of points. Relative position of points studied by way of the polytope that is their convex hull. Several families of examples are included
1 edition published in 1987 in English and held by 1 WorldCat member library worldwide
The objective of this work is to find properties of a distanceregular graph G that are expressed in the eigenvectors of its adjacency matrix. The approach is to consider the rows of a matrix of orthogonal eigencolumns as (coordinates of) points in euclidean space, each one corresponding to a vertex of G. For the second eigenvalue, the symmetry group of the points is isomorphic to the automorphism group of G. Adjacency of vertices is related to linear dependence, linear independence and proximity of points. Relative position of points studied by way of the polytope that is their convex hull. Several families of examples are included
Eigenvectors of Graphs(
Book
)
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
Let z be an eigenvector of the adjacency matrix A of a connected graph G. Say a vertix is positive, nonnegative, zero, etc. if the same is true of the corresponding element of z. If z is an eigenvector for the second largest eigenvalue of A, it is known that the nonnegative vertices of G form a connected subgraph. This separation of vertices according to sign provides the basis for studying the structure of G as revealed by its eigenvectors, inequalities on the number of edges joining positive and negative vertices, bounds on the number of zero vertices, bounds on multiplicities and some description of the variability of the elements of z. The rows of an eigenmatrix provide a mapping of the vertices of G into mdimensional euclidean space. Some graphs thus 'draw themselves'. This phenomenon is especially interesting if the graph is the skeleton of a polytope
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
Let z be an eigenvector of the adjacency matrix A of a connected graph G. Say a vertix is positive, nonnegative, zero, etc. if the same is true of the corresponding element of z. If z is an eigenvector for the second largest eigenvalue of A, it is known that the nonnegative vertices of G form a connected subgraph. This separation of vertices according to sign provides the basis for studying the structure of G as revealed by its eigenvectors, inequalities on the number of edges joining positive and negative vertices, bounds on the number of zero vertices, bounds on multiplicities and some description of the variability of the elements of z. The rows of an eigenmatrix provide a mapping of the vertices of G into mdimensional euclidean space. Some graphs thus 'draw themselves'. This phenomenon is especially interesting if the graph is the skeleton of a polytope
The Eastern Washington intellectual property institute : cutting edge updates, opportunities, and issues(
Book
)
1 edition published in 2008 in English and held by 1 WorldCat member library worldwide
1 edition published in 2008 in English and held by 1 WorldCat member library worldwide
SHOE : the extraction for hierarchical structure for machine learning of natural language by
David L Powers(
Book
)
1 edition published in 1991 in English and held by 1 WorldCat member library worldwide
1 edition published in 1991 in English and held by 1 WorldCat member library worldwide
Instructors manual for [D[D[D[D[D[D[D[D[D[D[D[D[D's manual for boundary value problems by
David L Powers(
Book
)
1 edition published in 1979 in English and held by 1 WorldCat member library worldwide
1 edition published in 1979 in English and held by 1 WorldCat member library worldwide
Range of heavy ions in solids by
David L Powers(
)
1 edition published in 1962 in Undetermined and held by 1 WorldCat member library worldwide
The ranges of N, Ne, Ar, Kr, and Xe ions in Be, B, C, and Al have been measured to ±10% for incident ion energy 50500 kev. A monoenergetic ion beam from an electrostatic accelerator strikes a thick target of the absorber, and the penetration depth is determined by a momentum analysis of monoenergetic protons elastically scattered from the target and the embedded atoms. An expression relating the penetration depth to the actual path length is derived. A linear rangeenergy behavior is found for Ar, Kr, and Xe ions; for N and Ne ions dE/dX increases with ion energy. The experimental ranges are 20% shorter than theoretical values based on energy loss by elastic nuclear collisions. By including electronic contributions to the stopping process, good agreement with experiment is achieved
1 edition published in 1962 in Undetermined and held by 1 WorldCat member library worldwide
The ranges of N, Ne, Ar, Kr, and Xe ions in Be, B, C, and Al have been measured to ±10% for incident ion energy 50500 kev. A monoenergetic ion beam from an electrostatic accelerator strikes a thick target of the absorber, and the penetration depth is determined by a momentum analysis of monoenergetic protons elastically scattered from the target and the embedded atoms. An expression relating the penetration depth to the actual path length is derived. A linear rangeenergy behavior is found for Ar, Kr, and Xe ions; for N and Ne ions dE/dX increases with ion energy. The experimental ranges are 20% shorter than theoretical values based on energy loss by elastic nuclear collisions. By including electronic contributions to the stopping process, good agreement with experiment is achieved
Boundary value problems by
David L Powers(
Book
)
1 edition published in 1973 in English and held by 1 WorldCat member library worldwide
1 edition published in 1973 in English and held by 1 WorldCat member library worldwide
Pivoted plane pad bearings : a variational solution by
A. Z Szeri(
Book
)
1 edition published in 1969 in English and held by 1 WorldCat member library worldwide
1 edition published in 1969 in English and held by 1 WorldCat member library worldwide
Graph Partitioning by Eigenvectors(
Book
)
1 edition published in 1987 in English and held by 1 WorldCat member library worldwide
Let A be the adjacency matrix of a connected graph G. If z is a column vector, we say that a vertex of G is positive, nonnegative, null, etc. if the corresponding entry of z has that property. For z such that Az> or = alpha z, we bound the number of components in the subgraph induced by positive vertices. For eigenvectors z having a null element, we bound the number of components in the graph induced by nonnull vertices. Finally, bounds are established for the number of null elements in an eigenvector, for the multiplicity of an eigenvalue and for the magnitudes of the second and last eignevalues of a general or a bipartite graph
1 edition published in 1987 in English and held by 1 WorldCat member library worldwide
Let A be the adjacency matrix of a connected graph G. If z is a column vector, we say that a vertex of G is positive, nonnegative, null, etc. if the corresponding entry of z has that property. For z such that Az> or = alpha z, we bound the number of components in the subgraph induced by positive vertices. For eigenvectors z having a null element, we bound the number of components in the graph induced by nonnull vertices. Finally, bounds are established for the number of null elements in an eigenvector, for the multiplicity of an eigenvalue and for the magnitudes of the second and last eignevalues of a general or a bipartite graph
Student Solutions Manual, Boundary Value Problems and Partial Differential Equations by
David L Powers(
)
2 editions published between 2005 and 2009 in English and held by 0 WorldCat member libraries worldwide
This student solutions manual accompanies the text, Boundary Value Problems and Partial Differential Equations, 5e. The SSM is available in print via PDF or electronically, and provides the student with the detailed solutions of the oddnumbered problems contained throughout the book. Provides students with exercises that skillfully illustrate the techniques used in the text to solve science and engineering problemsNearly 900 exercises ranging in difficulty from basic drills to advanced problemsolving exercisesMany exercises based on current engineering
2 editions published between 2005 and 2009 in English and held by 0 WorldCat member libraries worldwide
This student solutions manual accompanies the text, Boundary Value Problems and Partial Differential Equations, 5e. The SSM is available in print via PDF or electronically, and provides the student with the detailed solutions of the oddnumbered problems contained throughout the book. Provides students with exercises that skillfully illustrate the techniques used in the text to solve science and engineering problemsNearly 900 exercises ranging in difficulty from basic drills to advanced problemsolving exercisesMany exercises based on current engineering
Student's solutions manual, to accompany Boundary value problems, sixth edition by
David L Powers(
)
1 edition published in 2010 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 2010 in English and held by 0 WorldCat member libraries worldwide
more
fewer
Audience Level
0 

1  
Kids  General  Special 
Related Identities
 Frucht, Roberto
 Coxeter, H. S. M. (Harold Scott Macdonald) 19072003 Author
 Batchelder, J. H. (James H.)
 Multisystems, Inc
 Wilbur Smith and Associates
 Juster, Richard D. Author
 United States Office of Highway Planning
 CLARKSON UNIV POTSDAM NY DEPT OF MATHEMATICS AND COMPUTER SCIENCE
 Daelemans, W.
 Szeri, A. Z. Author
Associated Subjects
Algebras, Linear Boundary value problems Calculus Differential equations Differential equations, Partial Graph theory Highway planningData processing Hydrodynamics Intellectual property Lubrication and lubricantsMathematical models Mathematical analysis Representations of groups RoadsFinanceData processing United States Washington (State)