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In wireless mesh networks, scheduling is the bottleneck of the cross-layer design approach. Thus, it is surprising that CSMA is utility-optimal if it is used traffic-adaptive. However, the price to pay is short-term fairness and thus end-to-end delay. In this paper, we propose a step size adaptation algorithm that combines the advantages of small and large step sizes in a way that the convergence...
We have investigated fragmentation interactions of relativistic heavy ion projectiles using the plastic nuclear track detector CR-39 (C 12 H 18 O 7 ). Stacks with detector foils and different targets have been exposed to Au- and Pb-ions at the Berkeley BEVALAC, the GSI Darmstadt SIS, the Brookhaven AGS and the CERN SPS. These experiments have been performed with...
We have continued our studies of heavy ion projectile fragmentation using nuclear track detectors. Based on automatic track measurement it was possible to perform experiments with high statistical significance. Beams of different ions from the Berkeley BEVALAC, the Dubna Synchrophasotron, the Brookhaven AGS and the GSI Darmstadt SIS have been used. With CR-39 and BP-1 glass detectors we have studied...
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