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Accelerated life testing (ALT) is widely used to determine the failure time distribution of a product and the associated life‐stress relationship in order to predict the product's reliability under normal operating conditions. Many types of stress loadings such as constant‐stress, step‐stress and cyclic‐stress can be utilized when conducting ALT. Extensive research has been conducted on the analysis of ALT data obtained under a specified stress loading. However, the equivalency of ALT experiments involving different stress loadings has not been investigated. In this article, a log‐location‐scale distribution under Type I censoring is considered in planning ALT. An idea is provided for the equivalency of various ALT plans involving different stress loadings. Based on this idea, general equivalent ALT plans and some special types of equivalent ALT plans are explored. For demonstration, a constant‐stress ALT and a ramp‐stress ALT for miniature lamps are presented and their equivalency is investigated. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010 相似文献
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Jan Almäng 《Defence Studies》2019,19(2):189-204
It has frequently been observed in the literature on hybrid wars that there is a grey zone between peace and war, and that hybrid wars are conflicts which are not clear cases of war. In this paper, I attempt to illuminate this grey zone and the concept and nature of war from the philosophical discussions of vagueness and institutional facts. Vague terms are characterized by the fact that there is no non-arbitrary boundary between entities which lie in their extension, and entities which do not lie in their extension. I apply a theory of vagueness to notions such as “war” and “peace” and go on to suggest that the exact boundary for what counts as a war or not is arbitrary. However, the context in which the conflict occurs determines a range of possible locations for this boundary. The most important contextual parameter is in this respect how the parties to the conflict themselves conceptualize the conflict. I suggest that this can in various ways help us understand grey-zone conflicts. 相似文献
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Forrest B. Hare 《Contemporary Security Policy》2019,40(2):193-213
Given the advances made in conventional weapon capabilities, precision should by now be the accepted and expected norm in cyberspace as well. In this article I argue that developing precision cyber weapon systems, to be used during a lawful conflict, can be an important part of a responsible national security strategy to reduce the amount of violence and physical destruction in conflicts. I first describe a precision cyber weapon system in a military context. I then present three compelling rationales for the development of precision cyber weapon systems based on ethical, operational, and financial considerations. To support the position, I address several arguments that have been levied against their development. Thereafter I present several recommendations for a way ahead. 相似文献
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Tatiana Prorokova 《Journal of Military Ethics》2019,18(2):96-109
This article analyzes the American intervention in Nazi-oppressed Europe during World War II and the way in which this intervention is represented in film. Examining the visual and cinematic aesthetics of Saving Private Ryan and the mini-series Band of Brothers, the article seeks to demonstrate how film has responded to US intervention overseas. It is argued that the need to liberate Europe from the evil Other stands forth as the main, heavily moralized purpose of US military intrusion in the film and the mini-series being analyzed. To shore up this speculation, the author considers other films on the topic, namely, The Longest Day (1962) and Shutter Island (2009). The author claims that the scenes in the concentration camps that are crucial in Band of Brothers and Shutter Island have an ethical function, i.e. they justify US intervention in the foreign territory. Additionally, the article provides a brief overview of Playing for Time (1980), Schindler’s List (1993), The Devil’s Arithmetic (1999), The Grey Zone (2001), as well as the mini-series Holocaust (1978). 相似文献
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Michael Evans 《Defense & Security Analysis》2019,35(2):133-146
The most effective way for the Western profession of arms to use history is to disavow the purism and narrow specialisation of today’s academia in favour of developing a contemporary approach to the subject. The latter aims to foster a range of applied diagnostic skills that transcend the temporal dimensions of past, present, and future. A contemporary approach to history for military professionals emphasises the use of inter-disciplinary war studies to enhance policy relevance. In any defense and security organisation, history must be usable in the sense of providing cognitive and interpretative skills for probing relationships between possibility and actuality, between experience and expectation, and between singularity and repetition. Using history to examine such dialectical interconnections is particularly valuable when military establishments confront their essential task of analyzing emerging trends in the future of war. 相似文献
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Mattia Toaldo 《Small Wars & Insurgencies》2016,27(1):39-58
In 2011, Libya became the only country of the Arab Uprisings where NATO and the Arab League intervened militarily, ostensibly to protect the civilian population, but in reality in support of the opposition National Transitional Council. This article argues that, since 2011, Libya has transitioned from Qadhafi’s centralised authoritarianism to a new decentralised authoritarianism where multiple centres of power coexist and sometimes overlap, while leaving room only for formal democratic institutions. This is the result of decisions taken by the ‘revolutionaries’ after the overthrow of the dictator, and a consequence of long-standing features of the Libyan state and society. 相似文献
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Abdur R. Chowdhury 《Defence and Peace Economics》2016,27(5):583-608
We examine the role of war in retarding state fiscal capacity in developing countries, measured by tax revenue ratios to GDP. We build a simple theoretical model of a factionalized state, where patronage substitutes for common interest public goods, along with violent contestation over a rent or prize. Our dynamic panel empirical analysis applied to 79 developing countries, during 1980–2010, indicates that war, especially civil war, retards fiscal capacity, along with imperfect democracy, political repression, poor governance, and dependence on oil and macroeconomic mismanagement. High intensity conflict is particularly destructive of state capacity. In countries experiencing low intensity wars, other institutional factors may matter more than war. The diminution of fiscal capacity due to war appears less pronounced after the end of the cold war. 相似文献
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海军兵棋演习系统研究 总被引:1,自引:0,他引:1
兵棋演习系统是我军未来开展模拟训练的重要手段,针对国内外对兵棋推演系统现状及技术发展趋势进行研究,提出海军兵棋演习系统的发展方向和设计方法,并结合海军兵棋推演的研究内容重点,给出作战规则建模、指挥关系建模等主要关键技术的解决方法,为我国海军未来兵棋推演系统设计、研究和发展提供技术支撑。 相似文献