Sciweavers

522 search results - page 26 / 105
» The 3-Steiner Root Problem
Sort
View
ALGOSENSORS
2009
Springer
14 years 3 months ago
Improved Approximation Algorithms for Maximum Lifetime Problems in Wireless Networks
A wireless ad-hoc network is a collection of transceivers positioned in the plane. Each transceiver is equipped with a limited battery charge. The battery charge is then reduced a...
Zeev Nutov, Michael Segal
FORMATS
2006
Springer
14 years 9 days ago
Concurrent Semantics Without the Notions of State or State Transitions
This paper argues that basing the semantics of concurrent systems on the notions of state and state transitions is neither advisable nor necessary. The tendency to do this is deepl...
Edward A. Lee
CORR
2007
Springer
47views Education» more  CORR 2007»
13 years 8 months ago
Data Structures for Mergeable Trees
Motivated by an application in computational topology, we consider a novel variant of the problem of efficiently maintaining dynamic rooted trees. This variant allows an operation...
Loukas Georgiadis, Haim Kaplan, Nira Shafrir, Robe...
SODA
2004
ACM
91views Algorithms» more  SODA 2004»
13 years 10 months ago
Competitive analysis of organization networks or multicast acknowledgement: how much to wait?
We study, from the competitive analysis perspective, the trade off between communication cost and delay cost (or simply the sendor-wait dilemma) on a hierarchy (rooted tree). The p...
Carlos Brito, Elias Koutsoupias, Shailesh Vaya
COMCOM
2010
246views more  COMCOM 2010»
13 years 7 months ago
Tabu search algorithm for RP selection in PIM-SM multicast routing
: - To construct a multicast tree is the basis of multicast data transmission. The prime problem concerning the construction of a shared multicast tree is to determine the position...
Hua Wang, Xiangxu Meng, Min Zhang, Yanlong Li