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GLOBECOM
2010
IEEE
14 years 8 months ago
A Graphical Framework for Spectrum Modeling and Decision Making in Cognitive Radio Networks
There are many key problems of decision making related to spectrum occupancies in cognitive radio networks. It is known that there exist correlations of spectrum occupancies in tim...
Husheng Li, Robert C. Qiu
NC
2011
175views Neural Networks» more  NC 2011»
14 years 5 months ago
P systems with active membranes: trading time for space
We consider recognizer P systems having three polarizations associated to the membranes, and we show that they are able to solve the PSPACEcomplete problem Quantified 3SAT when wo...
Antonio E. Porreca, Alberto Leporati, Giancarlo Ma...
105
Voted
ASWEC
2006
IEEE
15 years 1 months ago
Requirements Capture and Specification for Enterprise Applications: a UML Based Attempt
We propose a software development method for enterprise applications that combines the use of the structural concepts provided by problem frames, and the use of the UML notation. ...
Christine Choppy, Gianna Reggio
DISOPT
2006
155views more  DISOPT 2006»
14 years 10 months ago
Cyclical scheduling and multi-shift scheduling: Complexity and approximation algorithms
We consider the multiple shift scheduling problem modelled as a covering problem. Such problems are characterized by a constraint matrix that has in every column blocks of consecu...
Dorit S. Hochbaum, Asaf Levin
76
Voted
WAOA
2004
Springer
91views Algorithms» more  WAOA 2004»
15 years 3 months ago
Pricing Network Edges to Cross a River
Abstract. We consider a Stackelberg pricing problem in directed networks. Tariffs have to be defined by an operator, the leader, for a subset of the arcs, the tariff arcs. Clien...
Alexander Grigoriev, Stan P. M. van Hoesel, Anton ...