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catch-22和curfew探源
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作者 易思荣 《语言教育》 1994年第10期32-32,共1页
1961年,美国黑色幽默作家约瑟夫·赫勒《Joseph Heller)发表了他的代表作Catch-22,作品以幽默的笔调,以二战中驻意大利的美国飞行大队为题材,反映了美国士兵的厌战情绪。 Catch-22本来指的是美国军规的第22条,这条军规规定空车人员... 1961年,美国黑色幽默作家约瑟夫·赫勒《Joseph Heller)发表了他的代表作Catch-22,作品以幽默的笔调,以二战中驻意大利的美国飞行大队为题材,反映了美国士兵的厌战情绪。 Catch-22本来指的是美国军规的第22条,这条军规规定空车人员只有在完成了作战飞行次数或在精神失常的情况下方可回到美国。 展开更多
关键词 CATCH curfew 美国士兵 飞行大队 HELLER 赫勒 瑟夫 受骗者 出版发行 常用词
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Disruption Recovery at Airports:Ground Holding,Curfew Restrictions and an Approximation Algorithm 被引量:1
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作者 Prabhu Manyem 《Journal of the Operations Research Society of China》 EI CSCD 2021年第4期819-852,共34页
We study disruptions at a major airport.Disruptions could be caused by bad weather,for example.Our study is from the perspective of the airport,the air services provider(such as air traffic control)and the travelling ... We study disruptions at a major airport.Disruptions could be caused by bad weather,for example.Our study is from the perspective of the airport,the air services provider(such as air traffic control)and the travelling public,rather than from the perspective of a single airline.Disruptions cause flights to be subjected to ground holding,or they cause the flights to violate airport curfew hours.We consider curfew and arrival capacities applicable at a single airport.After proving that the problem is NP-hard,we present a polynomial time approximation algorithm based on the primal–dual schema and show that if the problem is feasible,the algorithm finds a feasible solution that is both within a certain additive bound and within a certain multiplicative factor of the optimal solution.The algorithm returns a solution mix of which flights suffer no delay,which ones to be ground-held and which ones may violate the curfew(and hence pay a curfew penalty).Computational results are positive;our heuristic outperforms the integer programming solver by a wide margin. 展开更多
关键词 Air traffic management Airport curfew Disruption recovery Discrete(Combinatorial)optimization Integer programming Primal-dual schema
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