Sciweavers

1387 search results - page 224 / 278
» Convexity in Discrete Space
Sort
View
IJCV
2010
249views more  IJCV 2010»
13 years 7 months ago
A Computational Model of Multidimensional Shape
We develop a computational model of shape that extends existing Riemannian models of shape of curves to multidimensional objects of general topological type. We construct shape sp...
Xiuwen Liu, Yonggang Shi, Ivo D. Dinov, Washington...
INFOCOM
2010
IEEE
13 years 7 months ago
On Distributed Time-Dependent Shortest Paths over Duty-Cycled Wireless Sensor Networks
Abstract—We revisit the shortest path problem in asynchronous duty-cycled wireless sensor networks, which exhibit time-dependent features. We model the time-varying link cost and...
Shouwen Lai, Binoy Ravindran
SIAMAM
2010
120views more  SIAMAM 2010»
13 years 7 months ago
On Acoustic Cloaking Devices by Transformation Media and Their Simulation
By transformation optics, we construct and investigate three-dimensional acoustic cloaking devices for which the device itself and the cloaked region can be mapped into two nested ...
Ulrich Hetmaniuk, Hongyu Liu
CORR
2011
Springer
175views Education» more  CORR 2011»
13 years 3 months ago
Adaptive Channel Recommendation for Dynamic Spectrum Access
—We propose a dynamic spectrum access scheme where secondary users recommend “good” channels to each other and access accordingly. We formulate the problem as an average rewa...
Xu Chen, Jianwei Huang, Husheng Li
MOC
2011
13 years 3 months ago
Convergence of a mixed method for a semi-stationary compressible Stokes system
We propose and analyze a finite element method for a semi– stationary Stokes system modeling compressible fluid flow subject to a Navier– slip boundary condition. The veloci...
Kenneth H. Karlsen, Trygve K. Karper