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A tale of ACM visions
October 2015
Communications of the ACM: Volume 58 Issue 11, November 2015
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 6, Downloads (12 Months): 110, Downloads (Overall): 1,752
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Pathways to computing careers
November 2014
Communications of the ACM: Volume 57 Issue 12, December 2014
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 3, Downloads (12 Months): 26, Downloads (Overall): 3,145
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Personal Reflections on Gender Diversity in Computing
March 2013
Computer: Volume 46 Issue 3, March 2013
Publisher: IEEE Computer Society Press
The motivations of IT professionals who spend time trying to improve gender diversity in computing include both those oriented toward helping society and others that are more individual and personal. This is one of five articles providing personal perspectives on gender diversity in computing. The Web extra at http://youtu.be/Khh0DlVW9kk is ...
Keywords:
Gender issues,Computer science education,Equal opportunities,Engineering profession,Professional aspects,Career development,computing milieu,Computers,Educational institutions,Facsimile,computing profession,diversity in computing,diversity
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Educating computing's next generation
April 2011
Communications of the ACM: Volume 54 Issue 4, April 2011
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 3, Downloads (12 Months): 97, Downloads (Overall): 4,777
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Surfacing computer science in STEM education
March 2010
SIGCSE '10: Proceedings of the 41st ACM technical symposium on Computer science education
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 2, Downloads (12 Months): 12, Downloads (Overall): 202
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Keywords:
computer science education, k-12 curriculum, education policy
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An open dialogue concerning the state of education policy in computer science
March 2008
SIGCSE '08: Proceedings of the 39th SIGCSE technical symposium on Computer science education
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 1, Downloads (12 Months): 7, Downloads (Overall): 197
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Keywords:
STEM, teacher certification, K-12 curriculum, education policy
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February 2008
ACM SIGCSE Bulletin - SIGCSE 08: Volume 40 Issue 1, March 2008
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On the Performance of Tensor Methods for Solving Ill-Conditioned Problems
October 2007
SIAM Journal on Scientific Computing: Volume 29 Issue 6, October 2007
Publisher: Society for Industrial and Applied Mathematics
This paper investigates the performance of tensor methods for solving small- to large-scale systems of nonlinear equations where the Jacobian matrix at the root is ill-conditioned or singular. This condition occurs on many classes of problems, such as identifying or approaching turning points in path-following problems. The singular case has ...
Keywords:
ill-conditioned problems, nonlinear equations, singular problems, Newton's method, tensor methods
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Education
January 2005
SIAM Review: Volume 47 Issue 1, 2005
Publisher: Society for Industrial and Applied Mathematics
When you think of searching for information on the Web, you probably think of search engines such as Google. But do you think of eigenvectors? You should! Faithful readers of the Education section may recall the connection between information retrieval and numerical linear algebra from the second issue of the ...
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An optimization approach to the problem of protein structure prediction
December 2004
Mathematical Programming: Series A and B: Volume 101 Issue 3, December 2004
Publisher: Springer-Verlag New York, Inc.
We describe a large-scale, stochastic-perturbation global optimization algorithm used for determining the structure of proteins. The method incorporates secondary structure predictions (which describe the more basic elements of the protein structure) into the starting structures, and thereafter minimizes using a purely physics-based energy model. Results show this method to be ...
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An optimization approach to the problem of protein structure prediction
December 2004
Mathematical Programming: Series A and B: Volume 101 Issue 3, December 2004
Publisher: Springer-Verlag New York, Inc.
We describe a large-scale, stochastic-perturbation global optimization algorithm used for determining the structure of proteins. The method incorporates secondary structure predictions (which describe the more basic elements of the protein structure) into the starting structures, and thereafter minimizes using a purely physics-based energy model. Results show this method to be ...
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Education
April 2004
SIAM Review: Volume 46 Issue 4, 2004
Publisher: Society for Industrial and Applied Mathematics
This edition of the Education section contains two wonderfully written papers that will be very accessible to students and useful to instructors. They come from two quite different areas: complex analysis, and dynamical systems/numerical solution of differential equations. Both, in quite different ways, combine computation and mathematics. The first paper ...
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Curvilinear Linesearch for Tensor Methods
February 2003
SIAM Journal on Scientific Computing: Volume 25 Issue 2, 2003
Publisher: Society for Industrial and Applied Mathematics
This paper presents a curvilinear linesearch for use when solving nonlinear equations with tensor methods. Standard tensor methods use a combination of the tensor step and Newton step in a linesearch, but they are handled separately and in an ad hoc manner. Our curvilinear linesearch combines the two directions in ...
Keywords:
curvilinear linesearch, Newton's method, nonlinear systems, tensor methods, linesearch
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Global Optimization For Molecular Clusters Using A New Smoothing Approach
February 2000
Journal of Global Optimization: Volume 16 Issue 2, February 2000
Publisher: Kluwer Academic Publishers
Strategies involving smoothing of the objective function have been used to help solve difficult global optimization problems arising in molecular chemistry. This paper proposes a new smoothing approach and examines some basic issues in smoothing for molecular configuration problems. We first propose a new, simple algebraic way of smoothing the ...
Keywords:
Lennard-Jones Problems, Molecular Chemistry, Smoothing Techniques, Global Optimization
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Tensor Methods for Large, Sparse Nonlinear Least Squares Problems
December 1999
SIAM Journal on Scientific Computing: Volume 21 Issue 4, Dec. 1999—March 2000
Publisher: Society for Industrial and Applied Mathematics
This paper introduces tensor methods for solving large, sparse nonlinear least squares problems where the Jacobian either is analytically available or is computed by finite difference approximations. Tensor methods have been shown to have very good computational performance for small to medium-sized, dense nonlinear least squares problems. In this paper ...
Keywords:
rank-deficient matrices, sparse problems, tensor methods, large-scale optimization
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A Hierarchical Approach for Parallelization of a Global Optimization Method for Protein Structure Prediction
August 1999
Euro-Par '99: Proceedings of the 5th International Euro-Par Conference on Parallel Processing
Publisher: Springer-Verlag
We discuss the parallelization of our protein structure prediction algorithm on distributed-memory computers. Because the computation can be represented as a search through a vast tree of possible solutions, a hierarchical approach that assigns subtrees to different groups of processors allows us to partition the work efficiently and maintain information ...
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Dedication
April 1999
SIAM Journal on Optimization: Volume 9 Issue 4, 1999
Publisher: Society for Industrial and Applied Mathematics
SIAM Journal on Optimization would not exist were it not for the vision, energy, and dedication of John E. Dennis, Jr. It was he who, in the late 1980s, recognized the need for a SIAM journal focusing broadly on optimization. He was inspired partly by the success of the SIAM ...
Keywords:
John E. Dennis, dedication, Jr.
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A Revised Modified Cholesky Factorization Algorithm
April 1999
SIAM Journal on Optimization: Volume 9 Issue 4, 1999
Publisher: Society for Industrial and Applied Mathematics
A modified Cholesky factorization algorithm introduced originally by Gill and Murray and refined by Gill, Murray, and Wright is used extensively in optimization algorithms. Since its introduction in 1990, a different modified Cholesky factorization of Schnabel and Eskow has also gained widespread usage. Compared with the Gill--Murray--Wright algorithm, the Schnabel--Eskow ...
Keywords:
optimization, nonpositive definite, Cholesky factorization
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Tensor methods for large sparse systems of nonlinear equations
August 1998
Mathematical Programming: Series A and B: Volume 82 Issue 3, Aug. 1, 1998
Publisher: Springer-Verlag New York, Inc.
Keywords:
rank-deficient matrices, sparse problems, tensor methods, nonlinear equations
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A Stochastic/Perturbation Global Optimization Algorithm for Distance Geometry Problems
July 1997
Journal of Global Optimization: Volume 11 Issue 1, July 1997
Publisher: Kluwer Academic Publishers
We present a new global optimization approach for solving exactly or inexactly constrained distance geometry problems. Distance geometry problems are concerned with determining spatial structures from measurements of internal distances. They arise in the structural interpretation of nuclear magnetic resonance data and in the prediction of protein structure. These problems ...
Keywords:
Lennard-Jones cluster, Molecular conformation, global optimization
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Algorithm 768: TENSOLVE: a software package for solving systems of nonlinear equations and nonlinear least-squares problems using tensor methods
June 1997
ACM Transactions on Mathematical Software (TOMS): Volume 23 Issue 2, June 1997
Publisher: ACM
Bibliometrics:
Citation Count: 7
Downloads (6 Weeks): 3, Downloads (12 Months): 32, Downloads (Overall): 1,440
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This article describes a modular solftware package for solving systems of nonlinear equations and nonlinear problems, using a new class of methods called tensor methods. It is intended for small- to medium-sized problems, say with up to 100 equations and unknowns, in cases where it is reasonable to calculate the ...
Keywords:
nonlinear least squares, rank-deficient matrices, tensor methods, nonlinear equations
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