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TIT
2008
71views more  TIT 2008»
13 years 8 months ago
On the Optimal Number of Active Receivers in Fading Broadcast Channels
Abstract--For broadcast channels, a power allocation scheme is proposed to maximize the number of active receivers, for each of which, a minimum rate Rmin > 0 can be achieved. U...
Hengameh Keshavarz, Liang-Liang Xie, Ravi R. Mazum...
JUCS
2002
81views more  JUCS 2002»
13 years 8 months ago
Rationally Additive Semirings
Abstract: We define rationally additive semirings that are a generalization of ()complete and (-)continuous semirings. We prove that every rationally additive semiring is an iterat...
Zoltán Ésik, Werner Kuich
FMCO
2005
Springer
14 years 2 months ago
Separation Results Via Leader Election Problems
Abstract. We compare the expressive power of process calculi by studying the problem of electing a leader in a symmetric network of processes. We consider the π-calculus with mixe...
Maria Grazia Vigliotti, Iain Phillips, Catuscia Pa...
CAISE
2004
Springer
14 years 2 months ago
Ontology of Enterprise Competencies
Abstract. Ontologies constitute a pertinent mean to define and to manage competencies and knowledge in companies. The powerful inference mechanisms coming with ontologies allow imp...
M. Harzallah
CP
2001
Springer
14 years 1 months ago
GAC on Conjunctions of Constraints
Abstract. Applying GAC on conjunctions of constraints can lead to more powerful pruning [1]. We show that there exists a simple heuristic for deciding which constraints might be us...
George Katsirelos, Fahiem Bacchus