Results 1 - 10 of 18,294

A Fast Marching Level Set Method for Monotonically Advancing Fronts

by J. A. Sethian - PROC. NAT. ACAD. SCI , 1995
"... We present a fast marching level set method for monotonically advancing fronts, which leads to an extremely fast scheme for solving the Eikonal equation. Level set methods are numerical techniques for computing the position of propagating fronts. They rely on an initial value partial differential eq ..."
Abstract - Cited by 630 (24 self) - Add to MetaCart
describe a particular case of such methods for interfaces whose speed depends only on local position. The technique works by coupling work on entropy conditions for interface motion, the theory of viscosity solutions for Hamilton-Jacobi equations and fast adaptive narrow band level set methods

Quantum Gravity

by Lee Smolin , 2004
"... We describe the basic assumptions and key results of loop quantum gravity, which is a background independent approach to quantum gravity. The emphasis is on the basic physical principles and how one deduces predictions from them, at a level suitable for physicists in other areas such as string theor ..."
Abstract - Cited by 572 (11 self) - Add to MetaCart
We describe the basic assumptions and key results of loop quantum gravity, which is a background independent approach to quantum gravity. The emphasis is on the basic physical principles and how one deduces predictions from them, at a level suitable for physicists in other areas such as string

Statecharts: A Visual Formalism For Complex Systems

by David Harel , 1987
"... We present a broad extension of the conventional formalism of state machines and state diagrams, that is relevant to the specification and design of complex discrete-event systems, such as multi-computer real-time systems, communication protocols and digital control units. Our diagrams, which we cal ..."
Abstract - Cited by 2704 (56 self) - Add to MetaCart
. Statecharts are thus compact and expressive--small diagrams can express complex behavior--as well as compositional and modular. When coupled with the capabilities of computerized graphics, statecharts enable viewing the description at different levels of detail, and make even very large specifications

ALLIANCE: An Architecture for Fault Tolerant Multi-Robot Cooperation

by Lynne E. Parker - IEEE Transactions on Robotics and Automation , 1998
"... ALLIANCE is a software architecture that fa- cilitates the fault tolerant cooperative control of teams of heterogeneous mobile robots performing missions composed of loosely coupled subtasks that may have ordering dependencies. ALLIANCE allows teams of robots, each of which possesses a variety of hi ..."
Abstract - Cited by 508 (13 self) - Add to MetaCart
ALLIANCE is a software architecture that fa- cilitates the fault tolerant cooperative control of teams of heterogeneous mobile robots performing missions composed of loosely coupled subtasks that may have ordering dependencies. ALLIANCE allows teams of robots, each of which possesses a variety

A second order Coupled Level Set and Volume-of-Fluid Method for . . .

by Mark Sussman , 2002
"... We present a coupled Level Set / Volume-of-Fluid (CLSVOF) method for computing growth and collapse of vapor bubbles. The liquid is assumed incompressible and the vapor is assumed to have constant pressure in space. Second order algorithms are used for nding "mass conserving" extension vel ..."
Abstract - Cited by 66 (6 self) - Add to MetaCart
We present a coupled Level Set / Volume-of-Fluid (CLSVOF) method for computing growth and collapse of vapor bubbles. The liquid is assumed incompressible and the vapor is assumed to have constant pressure in space. Second order algorithms are used for nding "mass conserving" extension

Multiple Domain Dynamics Simulated with Coupled Level Sets

by C. Ratsch, C. Anderson, R. E. Caflisch, L. Feigenbaum, D. Shaevitz, M. Sheffler, C. Tiee , 2003
"... We adapt the level set method to simulate epitaxial growth of thin films on a surface that consists of different reconstruction domains. Both the island boundaries and the boundaries of the reconstruction domains are described by different level set functions. A formalism of coupled level set functi ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
We adapt the level set method to simulate epitaxial growth of thin films on a surface that consists of different reconstruction domains. Both the island boundaries and the boundaries of the reconstruction domains are described by different level set functions. A formalism of coupled level set

and Community Resources: Individual- and Couple-Level Analyses

by Andrew J. Hostetler, Stephan Desrochers, Kimberly Kopko, Phyllis Moen
"... This study uses individual- and couple-level analyses to examine the influence of work–family demands and community resources on marital and family satisfaction within a sample of dual-earner parents with dependent children (N = 260 couples, 520 individuals). Total couple work hours were strongly ne ..."
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This study uses individual- and couple-level analyses to examine the influence of work–family demands and community resources on marital and family satisfaction within a sample of dual-earner parents with dependent children (N = 260 couples, 520 individuals). Total couple work hours were strongly

A Variational Level Set Approach to Multiphase Motion

by Hong-kai Zhao, T. Chan, B. Merriman, S. Osher - JOURNAL OF COMPUTATIONAL PHYSICS 127, 179–195 (1996) ARTICLE NO. 0167 , 1996
"... A coupled level set method for the motion of multiple junctions (of, e.g., solid, liquid, and grain boundaries), which follows the gradient flow for an energy functional consisting of surface tension (proportional to length) and bulk energies (proportional to area), is sin �1 developed. The approach ..."
Abstract - Cited by 315 (38 self) - Add to MetaCart
A coupled level set method for the motion of multiple junctions (of, e.g., solid, liquid, and grain boundaries), which follows the gradient flow for an energy functional consisting of surface tension (proportional to length) and bulk energies (proportional to area), is sin �1 developed

Response of a Coupled Ocean–Atmosphere Model to Increasing Atmospheric Carbon Dioxide: Sensitivity to the Rate of Increase

by Ronald J. Stouffer, et al. - JOURNAL OF CLIMATE , 1999
"... The influence of differing rates of increase of the atmospheric CO 2 concentration on the climatic response is investigated using a coupled ocean–atmosphere model. Five transient integrations are performed each using a different constant exponential rate of CO 2 increase ranging from 4 % yr �1 to 0. ..."
Abstract - Cited by 334 (21 self) - Add to MetaCart
The influence of differing rates of increase of the atmospheric CO 2 concentration on the climatic response is investigated using a coupled ocean–atmosphere model. Five transient integrations are performed each using a different constant exponential rate of CO 2 increase ranging from 4 % yr �1 to 0

A coupled level set and volume-of-fluid method for computing 3D and axisymmetric incompressible two-phase flows

by Mark Sussman, Elbridge Gerry Puckett - Journal of Computational Physics , 1006
"... We present a coupled level set/volume-of-fluid (CLSVOF) method for computing 3D and axisymmetric incompressible two-phase flows. This method combines some of the advantages of the volume-of-fluid method with the level set method to ob-tain a method which is generally superior to either method alone. ..."
Abstract - Cited by 96 (2 self) - Add to MetaCart
We present a coupled level set/volume-of-fluid (CLSVOF) method for computing 3D and axisymmetric incompressible two-phase flows. This method combines some of the advantages of the volume-of-fluid method with the level set method to ob-tain a method which is generally superior to either method alone
Results 1 - 10 of 18,294