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A path independent integral and the approximate analysis of strain concentration by notches and cracks

by James R. Rice , 1967
"... An integral is exhibited which has the same value for all paths surrounding a class of notches in two-dimensional deformation fields of linear or non-linear elastic materials. The integral may be evaluated almost by inspection for a few notch configurations. Also, for materials of the elastic-plasti ..."
Abstract - Cited by 419 (11 self) - Add to MetaCart
for elastic brittle fracture and to the inclusion of strain hardening behavior in the Dugdale model for plane stress yielding, and 3) An approximate perfectly plastic plane strain analysis, based on the slip line theory, of contained plastic deformation at a crack tip and of crack blunting.

Health complaints, stress and distress: exploring the central role of negative affectivity

by David Watson, James W. Pennebaker - Psychological Review , 1989
"... Most current models in health psychology assume that stress adversely affects physical health. We re-examined this assumption by reviewing extensive data from the literature and from six samples of our own, in which we collected measures of personality, health and fitness, stress, and current emotio ..."
Abstract - Cited by 328 (3 self) - Add to MetaCart
Most current models in health psychology assume that stress adversely affects physical health. We re-examined this assumption by reviewing extensive data from the literature and from six samples of our own, in which we collected measures of personality, health and fitness, stress, and current

Reevaluating Amdahl’s law

by John L. Gustafson - Commun. ACM , 1988
"... At Sandia National Laboratories, we are currently en-gaged in research involving massively parallel process-ing. There is considerable skepticism regarding the via-bility of massive parallelism; the skepticism centers around Amdahl’s law, an argument put forth by Gene Amda.hl in 1967 [l] that even w ..."
Abstract - Cited by 316 (4 self) - Add to MetaCart
when the fraction of serial work in a given problem is small, say, s, the maximum speedup obtainable from even an infinite number of parallel processors is only l/s. We now have timing results for a 1024-processor system that demon-strate that the assumptions underlying Amdahl’s 1967 argument

The Computation of Optical Flow

by S.S. Beauchemin, J.L. Barron , 1995
"... Two-dimensional image motion is the projection of the three-dimensional motion of objects, relative to a visual sensor, onto its image plane. Sequences of time-ordered images allow the estimation of projected two-dimensional image motion as either instantaneous image velocities or discrete image dis ..."
Abstract - Cited by 295 (10 self) - Add to MetaCart
Two-dimensional image motion is the projection of the three-dimensional motion of objects, relative to a visual sensor, onto its image plane. Sequences of time-ordered images allow the estimation of projected two-dimensional image motion as either instantaneous image velocities or discrete image

Comparison of 2D Finite Element Modeling Assumptions with . . .

by Ronald Krueger, Isabelle L. Paris, T. Kevin O'Brien, Pierre Minguet - COMPOSITE STRUCTURES , 2001
"... The influence of two-dimensional finite element modeling assumptions on the debonding prediction for skin-stiffener specimens was investigated. Geometrically nonlinear finite element analyses using two-dimensional plane-stress and plane-strain elements as well as three different generalized plane st ..."
Abstract - Cited by 7 (4 self) - Add to MetaCart
The influence of two-dimensional finite element modeling assumptions on the debonding prediction for skin-stiffener specimens was investigated. Geometrically nonlinear finite element analyses using two-dimensional plane-stress and plane-strain elements as well as three different generalized plane

The phonology of Dutch

by Geert Booij
"... The phonology of most languages has until now been available only in a fragmented way, through unpublished theses, or articles scattered in more or less accessible journals. Each volume in this series will offer an extensive treatment of the phonology of one language within a modern theoretical pers ..."
Abstract - Cited by 262 (6 self) - Add to MetaCart
perspective, and will provide comprehen-sive references to recent and more classical studies of the language. The following wil l normally be included: an introduction situating the language geographically and typologically, an overview of the theoretical assumptions made by the author, a description

Solid 3D vs Plane Stress Shell Formulations of Anisotropic Non Normal Plasticity with Damage for Sheet Metal Forming

by H. Badreddine K. Saanouni
"... Abstract. In order to predict the ductile damage occurrence in metal forming, an “advanced ” finite anisotropic elastoplastic constitutive equations accounting for the “strong ” coupling with ductile damage have been developed and implemented in general 3D purpose F.E. software ABAQUS/Explicit®. The ..."
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– displacement curves. It has been shown that the plane stress assumption gives quite different results compared to the realistic 3D case when the damage effect (coupling) is taken into account. Also, the plane stress assumption is no more valid when plastic flow together with damage is highly localized.

Stability of Persistence Diagrams

by David Cohen-Steiner, Herbert Edelsbrunner, John Harer , 2005
"... The persistence diagram of a real-valued function on a topological space is a multiset of points in the extended plane. We prove that under mild assumptions on the function, the persistence diagram is stable: small changes in the function imply only small changes in the diagram. We apply this result ..."
Abstract - Cited by 222 (23 self) - Add to MetaCart
The persistence diagram of a real-valued function on a topological space is a multiset of points in the extended plane. We prove that under mild assumptions on the function, the persistence diagram is stable: small changes in the function imply only small changes in the diagram. We apply

Rupture velocity of plane strain shear cracks

by D. J. Andrews - J. Geophys. Res , 1976
"... Propagation of plane strain shear cracks is calculated numerically by using finite difference equations with second-order accuracy. The rupture model, in which stress drops gradually as slip increases, combines two different rupture criteria: (1) slip begins at a finite stress level; (2) finite ener ..."
Abstract - Cited by 154 (1 self) - Add to MetaCart
Propagation of plane strain shear cracks is calculated numerically by using finite difference equations with second-order accuracy. The rupture model, in which stress drops gradually as slip increases, combines two different rupture criteria: (1) slip begins at a finite stress level; (2) finite

Stochastic Completion Fields: A Neural Model of Illusory Contour Shape and Salience

by Lance R. Williams, David W. Jacobs - Neural Computation , 1995
"... We describe an algorithm and representation level theory of illusory contour shape and salience. Unlike previous theories, our model is derived from a single assumption--- namely, that the prior probability distribution of boundary completion shape can be modeled by a random walk in a lattice whose ..."
Abstract - Cited by 210 (14 self) - Add to MetaCart
We describe an algorithm and representation level theory of illusory contour shape and salience. Unlike previous theories, our model is derived from a single assumption--- namely, that the prior probability distribution of boundary completion shape can be modeled by a random walk in a lattice whose
Results 1 - 10 of 7,077