4,149 research outputs found

    Radiation temperature measurements of the nitrogen afterglow plasma

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    Radiation temperature measurements of nitrogen afterglow plasm

    Cold War Revival: Neoconservatives and Historical Memory in the War on Terror

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    Throughout the cold war, neoconservative intellectuals argued that the United States is an inherently virtuous nation engaged a permanent struggle against enemies at home as well as abroad. This essay addresses the ways that contemporary neoconservative voices have tried to revive the narrative of struggle, in part by claiming that the war on terror must be understood as a “present danger” that resembled the cold war. According to these commentators, a victorious strain of American foreign policy was born during the early years of the cold war. After three decades of setbacks and faltering national “will,” these principles were supposedly were reanimated by Ronald Reagan, who eventually carried the nation to triumph. By arguing that Americans are capable of restoring abandoned paths to victory, neoconservatives insist that the lessons of the cold war must be revived and applied to the struggle against radical Islam

    An x-band waveguide cell for study of microwave propagation through magnetoplasma technical report no. 16

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    Metal X-band waveguide cell for study of microwave propagation through magnetoplasm

    Microwave measurement of the probability of collision of low energy electrons in nitrogen technical report no. 17

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    Collision probability for momentum transfer of low energy electrons in nitroge

    Instabilities and turbulence in highly ionized plasmas in a magnetic field Semiannual status report, 1 Sep. 1970 - 28 Feb. 1971

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    Instabilities and turbulence in highly ionized plasmas in magnetic field related to problems of thrustors for manned space flight and plasma generated energ

    Lin-Kernighan Heuristic Adaptations for the Generalized Traveling Salesman Problem

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    The Lin-Kernighan heuristic is known to be one of the most successful heuristics for the Traveling Salesman Problem (TSP). It has also proven its efficiency in application to some other problems. In this paper we discuss possible adaptations of TSP heuristics for the Generalized Traveling Salesman Problem (GTSP) and focus on the case of the Lin-Kernighan algorithm. At first, we provide an easy-to-understand description of the original Lin-Kernighan heuristic. Then we propose several adaptations, both trivial and complicated. Finally, we conduct a fair competition between all the variations of the Lin-Kernighan adaptation and some other GTSP heuristics. It appears that our adaptation of the Lin-Kernighan algorithm for the GTSP reproduces the success of the original heuristic. Different variations of our adaptation outperform all other heuristics in a wide range of trade-offs between solution quality and running time, making Lin-Kernighan the state-of-the-art GTSP local search.Comment: 25 page
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