Titlebook: High-Latitude Space Plasma Physics; Bengt Hultqvist,Tor Hagfors Book 1983 Springer Science+Business Media New York 1983 Plasma.earth.plane

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Stanley W. H. Cowleyinput is an undirected graph . and ordered pairs (..,..), where . ∈ {1,2,…,.}. The goal is to find an orientation of . that minimizes the sum over every . ∈ {1,2,…,.} of the distance from .. to ....In the . the input is the same, however the goal is to find for every . ∈ {1,2,…,.} a path between ..

MOT

Charles R. Chappellonsecutively processed items generates cost. A reordering buffer of capacity . items can be used to preprocess the input sequence in order to decrease the number of color changes. The goal is to find a scheduling strategy that, using the reordering buffer, minimizes the number of color changes in th

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Duncan A. Bryantrequests. Our algorithm will batch the requests into . groups where the . group contains requests .. To process the requests of group ., our algorithm will place the . servers at the .-median centers of the first . requests. When a new request of this group arrives, the algorithm will simply assign

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H. Balsiger of competitive algorithms for dynamic problems, where objects can also depart from the instance. In this work, we give a general framework to obtain so called robust online algorithms for a variety of dynamic problems: these online algorithms achieve an asymptotic competitive ratio of . with migrat

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T. A. Potemrapoints in the Euclidean space. In order to reduce communication costs, the positions of the servers can be adapted by a limited distance . per round for each server. The costs are measured similar to the classical Page Migration Problem, i.e., answering a request induces costs proportional to the di

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Donald A. Gurnett set cover. For min-sum set cover, Feige, Lovàsz and Tetali [.] showed that the greedy algorithm has an approximation guarantee of 4, and obtaining a better approximation ratio is NP-hard. For precedence-constrained min-sum set cover, McClintock, Mestre and Wirth [.] proposed an .-approximation algo

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The Hot Ion Composition, Energy, and Pitch Angle Characteristics Above the Auroral Zone Ionosphere. The ISEE-1 spacecraft, launched in October, 1977, has recently been providing ion composition data at a few R. in the auroral regions as a result of its gradual increase in orbital inclination (to 55° latitude in June, 1981) (Sharp et al., 1982b). Some ion composition measurements have also been m