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13 Article history: 14 Available online xxxx 15 1 6 a b s t r a c t 17 In this paper, we present approximation algorithms for a variety of problems occurring in 18 the design of energy-efficient wireless communication networks. We first study the k-sta-19 tion network problem, where for a set S of stations and some constant k, one wants to 20 assign(More)
Agonist ligands for the nuclear receptor peroxisome proliferator-activated receptor-gamma have been shown to induce terminal differentiation of normal preadipocytes and human liposarcoma cells in vitro. Because the differentiation status of liposarcoma is predictive of clinical outcomes, modulation of the differentiation status of a tumor may favorably(More)
Hard real-time systems require tasks to finish in time. To guarantee the timeliness of such a system, static timing analyses derive upper bounds on the worst-case execution time (WCET) of tasks. There are two types of timing analyses: numeric and parametric. A numeric analysis derives a numeric timing bound and, to this end, assumes all information such as(More)
A fundamental class of problems in wireless communication is concerned with the assignment of suitable transmission powers to wireless devices/stations such that the resulting communication graph satisses certain desired properties and the overall energy consumed is minimized. Many concrete communication tasks in a wireless network like broadcast,(More)