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211.
The article develops a theorem which shows that the Lanchester linear war equations are not in general equal to the Kolmogorov linear war equations. The latter are time‐consuming to solve, and speed is important when a large number of simulations must be run to examine a large parameter space. Run times are provided, where time is a scarce factor in warfare. Four time efficient approximations are presented in the form of ordinary differential equations for the expected sizes and variances of each group, and the covariance, accounting for reinforcement and withdrawal of forces. The approximations are compared with “exact” Monte Carlo simulations and empirics from the WWII Ardennes campaign. The band spanned out by plus versus minus the incremented standard deviations captures some of the scatter in the empirics, but not all. With stochastically varying combat effectiveness coefficients, a substantial part of the scatter in the empirics is contained. The model is used to forecast possible futures. The implications of increasing the combat effectiveness coefficient governing the size of the Allied force, and injecting reinforcement to the German force during the Campaign, are evaluated, with variance assessments. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2005. 相似文献
212.
针对装备战损量预计这一未来作战装备保障必须解决的核心问题,运用兰彻斯特方程探讨解决途径。从分析影响装备战损的因素出发,综合讨论目前预计装备战损量的方法,提出基于指数多元兰彻斯特方程的装备战损量预计模型和模型中毁伤能力系数的确定方法,得到了装备战损量的兰彻斯特方程预计方法,并举例验证。该方法将经验计算与模拟计算相结合,用较简单的确定性解析方程描述所考虑因素对装备战损量的客观约束关系,较好地满足了未来信息化条件下作战装备战损量预计的需要。 相似文献
213.
214.
In this paper we study a capacity allocation problem for two firms, each of which has a local store and an online store. Customers may shift among the stores upon encountering a stockout. One question facing each firm is how to allocate its finite capacity (i.e., inventory) between its local and online stores. One firm's allocation affects the decision of the rival, thereby creating a strategic interaction. We consider two scenarios of a single‐product single‐period model and derive corresponding existence and stability conditions for a Nash equilibrium. We then conduct sensitivity analysis of the equilibrium solution with respect to price and cost parameters. We also prove the existence of a Nash equilibrium for a generalized model in which each firm has multiple local stores and a single online store. Finally, we extend the results to a multi‐period model in which each firm decides its total capacity and allocates this capacity between its local and online stores. A myopic solution is derived and shown to be a Nash equilibrium solution of a corresponding “sequential game.” © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2006 相似文献
215.
We develop models that lend insight into how to design systems that enjoy economies of scale in their operating costs, when those systems will subsequently face disruptions from accidents, acts of nature, or an intentional attack from a well‐informed attacker. The systems are modeled as parallel M/M/1 queues, and the key question is how to allocate service capacity among the queues to make the system resilient to worst‐case disruptions. We formulate this problem as a three‐level sequential game of perfect information between a defender and a hypothetical attacker. The optimal allocation of service capacity to queues depends on the type of attack one is facing. We distinguish between deterministic incremental attacks, where some, but not all, of the capacity of each attacked queue is knocked out, and zero‐one random‐outcome (ZORO) attacks, where the outcome is random and either all capacity at an attacked queue is knocked out or none is. There are differences in the way one should design systems in the face of incremental or ZORO attacks. For incremental attacks it is best to concentrate capacity. For ZORO attacks the optimal allocation is more complex, typically, but not always, involving spreading the service capacity out somewhat among the servers. © 2011 Wiley Periodicals, Inc. Naval Research Logistics, 2011 相似文献
216.
Richard Andres 《战略研究杂志》2013,36(3):395-422
In Operation ‘Iraqi Freedom’, as the Coalition's heavy forces fought in the South, in the North a handful of special operations forces, working with Kurdish rebels, clashed with the Iraqi army along the Green Line. In operations reminiscent of those used a year earlier to defeat the Taliban in Afghanistan, the lightly armed and heavily outnumbered Coalition forces called in air strikes to defeat Iraq's regular and Republican Guard army divisions. This article tells the story of these operations and discusses some of their implications for future US military policy. The success of the Afghan model in Iraq goes a long way toward demonstrating the efficacy of new air-heavy tactics and shows the strategic value of using light indigenous allies to replace heavy US land forces in both conventional combat and occupation operations. 相似文献
217.
Alexander Lanoszka 《Contemporary Security Policy》2018,39(2):234-257
Recent tensions between Russia and the United States have sparked debate over the value of the North Atlantic Treaty Organization (NATO). One controversy surrounds the extent to which NATO raises the risk of war through entrapment—a concept that scholars invoke to describe how states might drag their allies into undesirable military conflicts. Yet scholars have advanced different, even conflicting arguments about how entrapment risks arise. I offer a typology that distinguishes between the mechanisms through which entrapment risks allegedly emerge on the basis of their institutional, systemic, reputational, and transnational ideological sources. I use the 2008 Russo-Georgian War to illustrate how the purported mechanisms of entrapment fare in elucidating that conflict. In analyzing why entrapment risks emerge, and thinking counterfactually about The 2008 War, I argue that scholars need to disentangle the various mechanisms that drive both alliance formation and war to make sure that entrapment risks do indeed exist. 相似文献
218.
Mihail Naydenov 《Defense & Security Analysis》2018,34(1):93-112
Russia has long been pursuing an intended and calculated policy of keeping enough influence in Bulgaria in order to have control over national decisions. Together with the economic, energy, political and information tools used by Russia in its hybrid war against Bulgaria and in its bid to achieve an enduring “state capture,” defence is also a distinct target of Russian subversion now. A list of noticeable subversive actions with tangible effects can be summarised, ranging from fuelling division and manipulating public opinion, preventing the strengthening of the NATO position in the Black Sea, sabotaging defence reform to various options of subverting the modernisation of the Bulgarian Armed Forces and seeking new ways to keep legacy Soviet military equipment in operation as long as possible. This issue must be urgently addressed both nationally and in NATO. 相似文献
219.
通过梳理美军\"分布式杀伤\"概念的提出背景、提出过程、内涵意义,阐述了\"分布式杀伤\"的三条制胜之道,即符合海战客观环境、符合科技进步方向、符合战争演变趋势。此外,文章还分析了\"分布式杀伤\"实际执行过程中的几大难点和缺陷,包括指挥控制问题、舰船能力问题、成本和后勤补给问题、防御有效性问题。 相似文献
220.
Grand strategic theorists share an historical emphasis on interstate conflict, yet in contrast to the more frequent intrastate conflicts, these represent only 7 of the some 273 US military deployments since 1900. We argue that these intrastate conflicts limit the utility of regional balances of power in mitigating forms of conflict that the US may consider inimical to its national security interests. When considering potential changes to US force posture and grand strategy, American coercive statecraft should be theorised along a broader strategic continuum encompassing the full range of conflict. 相似文献