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171.
    
We analyze an interdiction scenario where an interceptor attempts to catch an intruder as the intruder moves through the area of interest. A motivating example is the detection and interdiction of drug smuggling vessels in the Eastern Pacific and Caribbean. We study two models in this article. The first considers a nonstrategic target that moves through the area without taking evasive action to avoid the interdictor. We determine the optimal location the interceptor should position itself to best respond when a target arrives. The second model analyzes the strategic interaction between the interceptor and intruder using a Blotto approach. The intruder chooses a route to travel on and the interceptor chooses a route to patrol. We model the interaction as a two‐player game with a bilinear payoff function. We compute the optimal strategy for both players and examine several extensions. © 2017 Wiley Periodicals, Inc. Naval Research Logistics, 64: 29–40, 2017  相似文献   
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We study a stochastic interdiction model of Morton et al. IIE Transactions, 39 (2007):3–14 that locates radiation sensors at border crossings to detect and prevent the smuggling of nuclear material. In this model, an interdictor places sensors at customs checkpoints to minimize a potential smuggler's maximum probability of crossing a border undetected. We focus on a model variant in which the interdictor has different, and likely more accurate, perceptions of the system's parameters than the smuggler does. We introduce a model that is tighter and uses fewer constraints than that of Morton et al. We also develop a class of valid inequalities along with a corresponding separation procedure that can be used within a cutting‐plane approach to reduce computational effort. Computational results demonstrate the effectiveness of our approach.Copyright © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 91–100, 2014  相似文献   
173.
This article analyzes the main factors that contributed to the failure of the US intelligence community to alert against Soviet intentions and the intervention in the Egyptian–Israeli War of Attrition in 1969–70. Based on fresh archival sources, this research describes the US intelligence conception concerning the USSR; explains the crystallization of the intelligence estimate on the probability of Soviet intervention in 1970; deals with the intelligence data that were acquired but eventually ignored; and concludes with several plausible explanations for the intelligence blunder.  相似文献   
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In 1999 India and Pakistan engaged in a limited war in the Himalayan peaks of Kashmir. Pakistani irregulars occupied territory in the Indian-held district of Kargil. A campaign that lasted 74 days and cost each side more than 1,000 casualties concluded with India in control of the commanding heights around Kargil. The conflict exposed flaws in the Indian armed forces as well as enduring truths of combat in the high mountains. Political constraints combined with the unforgiving environment and a determined enemy to diminish India's military advantage. Transition from counterinsurgency to high-intensity combat in the Himalayas proved to be a daunting task. Early failure was only overcome through innovation and adaptation to the environment. Specialised forces, unconventional techniques and the focused application of overwhelming firepower ultimately secured victory.  相似文献   
175.
This study examines the failures of the William J. Clinton and Barack Obama administrations to secure ratification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). It applies an integrated analytical framework for assessing treaty ratification that builds upon previous research in order to understand why the Clinton administration failed to achieve CTBT ratification in 1999 and why the Obama administration has so far failed to advance the treaty in the Senate. The study concludes that CTBT ratification, despite Obama administration pledges of support, remains highly unlikely. Finally, the study analyzes the common domestic political factors present in both cases and suggests areas for further research.  相似文献   
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This paper is designed to treat (a) the problem of the determination of the absolute minimum cost, with the associated assignments, when there is no limit, N, on the number of parcels available for shipment in a modified Hitchcock problem. This is accomplished with the use of a transformed cost matrix. C*, to which the so-called transportation paradox does not apply. The general Hitchcock solution using C* gives the cost T*, which is the absolute minimum cost of the original problem, as well as sets of assignments which are readily transformed to give the general assignments of the original problem. The sum of these latter assignments gives the value of Nu, the unbounded N for minimum cost. In addition, this paper is designed to show (b) how the method of reduced matrices may be used, (c) how a particular Hitchcock solution can be used to determine a general solution so that one solution using C* can provide the general answer, (d) how the results may be modified to apply to problems with fixed N, and hence (e) to determine the function of the decreasing T as N approaches Nu, and finally (f) to provide a treatment when the supplies at origin i and/or the demands at destination j, are bounded.  相似文献   
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