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Symmetry of local minimizers for the three dimensional . . .

by Vincent Milot, Adriano Pisante , 2008
"... We classify nonconstant entire local minimizers of the standard Ginzburg-Landau functional for maps in H 1 loc (R³, R³) satisfying a natural energy bound. Up to translations and rotations, such solutions of the Ginzburg-Landau system are given by an explicit solution equivariant under the action of ..."
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We classify nonconstant entire local minimizers of the standard Ginzburg-Landau functional for maps in H 1 loc (R³, R³) satisfying a natural energy bound. Up to translations and rotations, such solutions of the Ginzburg-Landau system are given by an explicit solution equivariant under the action

Consistent hashing and random trees: Distributed caching protocols for relieving hot spots on the World Wide Web

by David Karger, Eric Lehman, Tom Leighton, Matthew Levine, Daniel Lewin, Rina Panigrahy - IN PROC. 29TH ACM SYMPOSIUM ON THEORY OF COMPUTING (STOC , 1997
"... We describe a family of caching protocols for distrib-uted networks that can be used to decrease or eliminate the occurrence of hot spots in the network. Our protocols are particularly designed for use with very large networks such as the Internet, where delays caused by hot spots can be severe, and ..."
Abstract - Cited by 699 (10 self) - Add to MetaCart
, and where it is not feasible for every server to have complete information about the current state of the entire network. The protocols are easy to implement using existing network protocols such as TCP/IP, and require very little overhead. The protocols work with local control, make efficient use

Université de Cergy-Pontoise

by Département De Mathématiques, Avenue Adolphe Chauvin, Adriano Pisante , 804
"... Abstract. We classify nonconstant entire local minimizers of the standard Ginzburg-Landau functional for maps in H 1 loc (R3; R 3) satisfying a natural energy bound. Up to translations and rotations, such solutions of the Ginzburg-Landau system are given by an explicit solution equivariant under the ..."
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Abstract. We classify nonconstant entire local minimizers of the standard Ginzburg-Landau functional for maps in H 1 loc (R3; R 3) satisfying a natural energy bound. Up to translations and rotations, such solutions of the Ginzburg-Landau system are given by an explicit solution equivariant under

Bottom-up computation of sparse and Iceberg CUBE

by Kevin Beyer, Raghu Ramakrishnan - In Proceedings of the 5th ACM international workshop on Data Warehousing and OLAP, DOLAP ’02 , 1999
"... We introduce the Iceberg-CUBE problem as a reformulation of the datacube (CUBE) problem. The Iceberg-CUBE problem is to compute only those group-by partitions with an aggregate value (e.g., count) above some minimum support threshold. The result of Iceberg-CUBE can be used (1) to answer group-by que ..."
Abstract - Cited by 187 (4 self) - Add to MetaCart
practical advantage: BUC avoids computing the larger group-bys that do not meet minimum support. The pruning in BUC is similar to the pruning in the Apriori algorithm for association rules, except that BUC trades some pruning for locality of reference and reduced memory requirements. BUC uses the same

Coil sensitivity encoding for fast MRI. In:

by Klaas P Pruessmann , Markus Weiger , Markus B Scheidegger , Peter Boesiger - Proceedings of the ISMRM 6th Annual Meeting, , 1998
"... New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect complementa ..."
Abstract - Cited by 193 (3 self) - Add to MetaCart
or collimation but by spectral analysis. The idea of Lauterbur (1) to encode object contrast in the resonance spectrum by a magnetic field gradient forms the exclusive basis of signal localization in Fourier imaging. However powerful, the gradient-encoding concept implies a fundamental restriction. Only one

A Local Search Mechanism for Peer-to-Peer Networks

by Vana Kalogeraki, Dimitrios Gunopulos, D. Zeinalipour-Yazti , 2002
"... One important problem in peer-to-peer (P2P) networks is searching and retrieving the correct information. However, existing searching mechanisms in pure peer-to-peer networks are inefficient due to the decentralized nature of such networks. We propose two mechanisms for information retrieval in pure ..."
Abstract - Cited by 151 (6 self) - Add to MetaCart
in pure peer-to-peer networks. The first, the modified Breadth-First-Search (BFS) mechanism, is an extension of the current Gnuttela protocol, allows searching with keywords, and is designed to minimize the number of messages that are needed to search the network. The second, the Intelligent Search

Accuracy characterization for metropolitan-scale wi-fi localization

by Yu-chung Cheng, Yatin Chawathe, Anthony Lamarca, John Krumm - In Proceedings of Mobisys 2005 , 2005
"... Location systems have long been identified as an important component of emerging mobile applications. Most research on location systems has focused on precise location in indoor environments. However, many location applications (for example, location-aware web search) become interesting only when th ..."
Abstract - Cited by 143 (6 self) - Add to MetaCart
the underlying location system is available ubiquitously and is not limited to a single office environment. Unfortunately, the installation and calibration overhead involved for most of the existing research systems is too prohibitive to imagine deploying them across, say, an entire city. In this work, we

Liouville Theorems For Entire Local Minimizers Of Energies Defined On The Class L log L And For Entire Solutions Of The Stationary Prandtl-Eyring Fluid Model

by Martin Fuchs, Guo Zhang , 2011
"... If u: R n → R M locally minimizes the energy with density |∇u|ln(1 + |∇u|), then we show that the boundedness of the function u already implies its constancy. The same is true in case n = M = 2 for entire solutions of the equations modelling the stationary flow of a so-called Prandtl-Eyring f ..."
Abstract - Cited by 8 (8 self) - Add to MetaCart
If u: R n → R M locally minimizes the energy with density |∇u|ln(1 + |∇u|), then we show that the boundedness of the function u already implies its constancy. The same is true in case n = M = 2 for entire solutions of the equations modelling the stationary flow of a so-called Prandtl

Interactive Local Adjustment of Tonal Values

by Dani Lischinski, Zeev Farbman, Matt Uyttendaele, Richard Szeliski
"... This paper presents a new interactive tool for making local adjustments of tonal values and other visual parameters in an image. Rather than carefully selecting regions or hand-painting layer masks, the user quickly indicates regions of interest by drawing a few simple brush strokes and then uses ..."
Abstract - Cited by 97 (11 self) - Add to MetaCart
sliders to adjust the brightness, contrast, and other parameters in these regions. The effects of the user’s sparse set of constraints are interpolated to the entire image using an edge-preserving energy minimization method designed to prevent the propagation of tonal adjustments to regions

Power Supply Noise Analysis Methodology for Deep-Submicron VLSI Chip Design

by Howard H. Chen, David D. Ling, Deep-submicron Vlsi, Chip Design , 1997
"... This paper describes a new design methodology to analyze the on-chip power supply noise for high-performance microprocessors. Based on an integrated package-level and chip-level power bus model, and a simulated switching circuit model for each functional block, this methodology offers the most compl ..."
Abstract - Cited by 134 (2 self) - Add to MetaCart
complete and accurate analysis of Vdd distribution for the entire chip. The analysis results not only provide designers with the inductive #I noise and the resistive IR drop data at the same time, but also allow designers to easily identify the hot spots on the chip and #V across the chip. Global and local
Results 1 - 10 of 652