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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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樓主: CRUST
41#
發(fā)表于 2025-3-28 16:51:26 | 只看該作者
The Hot Electrons in and Above the Auroral Ionosphere: Observations and Physical Implicationsuch as auroral arcs and the more irregular and variable structures that occur during auroral breakup. In view of its overriding importance, the present discussion will concentrate on this issue, even though other important areas such as the electrons that produce pulsating aurora will remain untouch
42#
發(fā)表于 2025-3-28 19:47:44 | 只看該作者
43#
發(fā)表于 2025-3-29 01:38:09 | 只看該作者
High Latitude Electromagnetic Plasma Wave Emissionsthe whistler mode. The first satellite investigation of auroral hiss was reported by Gurnett (1966) who showed that auroral hiss is closely correlated with intense fluxes of precipitating auroral electrons. This relationship was subsequently confirmed and refined by a number of low-altitude satellit
44#
發(fā)表于 2025-3-29 03:26:51 | 只看該作者
t operators, which approximate uniformly . in each compact subinterval of [0, +.) with the order ., where . arbitrary fast. Also, shape preserving and localization results for max-product Bernstein–Kantorovich–Choquet operators are obtained. Section 4 contains quantitative approximation results for
45#
發(fā)表于 2025-3-29 10:22:07 | 只看該作者
46#
發(fā)表于 2025-3-29 15:23:15 | 只看該作者
Kerstin Fredgaads to a better performance. We obtain similar separation for list update algorithms. Lastly, we show that, surprisingly, certain randomized algorithms which are superior to MTF in the classical model are not so in the parameterized case, which matches experimental results.
47#
發(fā)表于 2025-3-29 16:33:03 | 只看該作者
R. A. Wolf,R. W. Spiro can be .(1?+?.)-approximated..We demonstrate the applicability of our approach on two classes of integer programs, namely, totally unimodular integer programs and integer programs with two variables per inequality. Further, for combinatorial optimization problems our method yields polynomial time a
48#
發(fā)表于 2025-3-29 23:30:48 | 只看該作者
Asgeir Brekkeonic number), we show that for every .>?0 there is a polynomial time .-approximation algorithm for our problem. Our analysis of the greedy algorithm shows that when applied to covering a bipartite graph using copies of . . bicliques, it returns a feasible solution whose cost is at most . where . den
49#
發(fā)表于 2025-3-30 01:10:46 | 只看該作者
50#
發(fā)表于 2025-3-30 04:59:38 | 只看該作者
Richard Vondrakow a lower bound of 1.20 on the competitive ratio of any deterministic algorithm..We extend our techniques and analyze the competitive ratio of greedy with respect to the ?. norm. We show that the greedy algorithm performs within at most 2-Ω(1/.) of the optimum. We also show a lower bound of 2???.(l
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