Titlebook: Algorithmic Aspects in Information and Management; 4th International Co Rudolf Fleischer,Jinhui Xu Conference proceedings 2008 Springer-Ver

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Speed Scaling with a Solar Cell,xpressed as a polynomial sized convex program. We that using the KKT conditions, one can obtain an efficient algorithm to verify the optimality of a schedule. We show that the energy optimal YDS schedule, is 2-approximate with respect to the recharge rate. We show that the online algorithm BKP is .(1)-competitive with respect to recharge rate.

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Line Facility Location in Weighted Regions,odel for many facility location problems that arise in practical applications. Our algorithms exploit an interesting property of the problem, that could possibly be used for solving other problems in weighted regions.

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Engineering Label-Constrained Shortest-Path Algorithms,ge .???.., the . consists of finding a shortest path . in . such that the concatenated labels along . form a word of .. This definition allows to model, e. g., many traffic-planning problems. We present extensions of well-known speed-up techniques for the standard shortest-path problem, and conduct

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