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Suzanne E. Spaulding 《The Nonproliferation Review》2013,20(4):168-178
The threat posed by the proliferation of weapons of mass destruction is real and urgent. Combating this threat requires a new and comprehensive approach by the federal government. It requires sustained leadership at the top and an organizational structure that can set policies and objectives for combating proliferation; develop integrated, government‐wide plans to implement those policies and objectives, including plans for acquiring necessary technology; make appropriate decisions regarding how resources should be allocated to carry out those plans; and regularly evaluate the effectiveness of our policies, programs, and operations. There is no such comprehensive approach today. 相似文献
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Timothy D. Sisk 《Civil Wars》2013,15(4):7-20
Syria's slide into sectarian civil war in 2011 raises a new fundamental knowledge question about the conditions under which power-sharing pacts can be clinched as an approach to war termination. When intrastate conflicts escalate into violent sectarian struggles, power-sharing is a likely basis of an eventual political settlement in situations where partition is off the table. This article contends that there remain two puzzling knowledge gaps about power-sharing as the basis for peace agreements to end civil wars: first, the specific conditions under which elites find it in their own interest to share power with bitter adversaries rather than fight on the battlefield, and second, how war-ending elite-negotiated pacts may evolve into more enduring social contracts. These puzzles, critical for policymakers and still unresolved in the scholarly literature, suggest the need to develop more contingent- and context-specific knowledge if research findings are to more capably contribute to peacemaking efforts. 相似文献
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This article proposes two dual‐ascent algorithms and uses each in combination with a primal drop heuristic embedded within a branch and bound framework to solve the uncapacitated production assembly distribution system (i.e., supply chain) design problem, which is formulated as a mixed integer program. Computational results indicate that one approach, which combines primal drop and dual‐ascent heuristics, can solve instances within reasonable time and prescribes solutions with gaps between the primal and dual solution values that are less than 0.15%, an efficacy suiting it for actual large‐scale applications. © 2012 Wiley Periodicals, Inc. Naval Research Logistics, 2013 相似文献