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151.
152.
首先对三层Client/Server结构进行了系统概述,然后结合所开发的档案信息管理系统的实际情况,从系统划分、服务器设计、数据库设计和客户端实现几个方面对该系统的总体设计进行详细说明,接着给出了该系统的技术实现特点,最后进行了相关总结. 相似文献
153.
昌月楼 《国防科技大学学报》1989,11(4):41-47
为解决调试并行程序碰到的第一个困难:并行程序的不确定性,文中提出了环境再现技术。文中叙述了环境再现技术的思想和实现这一技术需要的数据结构,并用CCNPASCAL语言进行了描述,最后给出了一个典型的应用例子。 相似文献
154.
Maria Rost Rublee 《The Nonproliferation Review》2013,20(1):49-70
“Nuclear threshold states”—those that have chosen nuclear restraint despite having significant nuclear capabilities—seem like the perfect partners for the reinvigorated drive toward global nuclear disarmament. Having chosen nuclear restraint, threshold states may embrace disarmament as a way to guarantee the viability of their choice (which may be impossible in a proliferating world). Supporting disarmament efforts affirms their restraint, both self-congratulating and self-fulfilling. Additionally, the commitment to their non-nuclear status springs at least in part from a moral stance against nuclear weapons that lends itself to energetic support of global disarmament. However, threshold states also offer significant challenges to the movement for nuclear weapons elimination, in particular in relation to acquisition of enrichment and reprocessing facilities. This article analyzes both the challenges and opportunities posed by threshold states by examining the cases of Brazil and Japan. 相似文献
155.
油罐是油品储运的重要设备,罐底最易出现穿孔渗漏油现象,致使罐基内部油气质量分数高于正常值。以油库中柴油覆土罐群为例,研究并试验了根据罐基油气质量分数识别罐底渗漏的方法:分析罐基探漏孔位置分布并钻孔;多次探测罐基油气质量分数,根据探测数据识别各罐有无底部渗漏;为了便于以后检测油库时识别各罐有无渗漏,为各罐建立状态监测表,并将无渗漏的罐基油气质量分数最高值暂定为该类罐的安全值,低于该安全值的油罐可直接判定为无渗漏。实践结果证明,这种不开罐检测罐底渗漏油的方法可及时发现故障并采取措施,对储油安全具有重要意义。 相似文献
156.
Maria Hedvall 《Defence and Peace Economics》2013,24(1):101-108
This paper discusses change transactions that occur in connection with the procurement of defence systems. The bases for the reasoning are the ideas of Miller and Vollman (1985) and Eppinger (2001). These researchers argue that unplanned flows of information lead to change transactions, causing significant overhead costs. According to this paper, change transactions in defence procurement could be caused by (a) the changes in technology taking place during the long lifetime of a defence system and (b) the structure and contents of the agreements between the defence agent (the procurer) and the defence industry (the supplier). 相似文献
157.
This study revisits the long run and dynamic causal linkages between defense spending and economic growth in 15 selected European countries for the period 1988–2010 by utilizing recent developments in non-stationary panel data analysis. To this end, the series properties of per capita defense spending, per capita real capita stocks, and per capita real GDP are investigated by the panel unit root tests with and without breaks that support evidence on unit root. The panel cointegration tests with and without breaks are also subsequently employed to investigate whether there exists a long-run equilibrium relationship between these three variables. Finally, our causality analysis from panel vector error-correction model suggests that there is a feedback relation between real capital stock and real GDP in both short and long run, a one-way Granger causality running from real GDP to defense spending in both short and long run, and defense spending only Granger causes real capital stock in the long run. 相似文献
158.
军工产品质量与可靠性信息管理运行机制的探讨 总被引:1,自引:0,他引:1
本文在总结我国多年开展质量与可靠性信息管理工作经验的基础上,根据信息管理的任务和应遵循的原则,对建立具有我国特色的军工产品质量与可靠性信息管理运行机制的问题进行了探讨。提出了为全面保证军工产品质量与可靠性信息系统能持续、有效地运行,所应建立的运行机制。 相似文献
159.
型号设计阶段是装备质量形成的源头,质量评价是保证型号研制方案质量的重要手段。根据型号研制阶段设计质量评价新需求,应用现代产品质量理论及方法,阐述了型号设计质量评价的概念、特点、过程、方法体系及软件工具系统,为保证装备方案质量提供切实可行的技术途径,使装备质量持续改进成为可能。 相似文献
160.
Maria Ryan 《Small Wars & Insurgencies》2014,25(1):41-68
This article examines the evolution of US irregular warfare (IW) doctrine and practice from 2001 onwards. It argues that, after 9/11, top-tier civilian policymakers in the US Department of Defense (DoD) and across the US government developed a heightened awareness of asymmetric threats and non-conventional forms of warfare, especially those shaped by contemporary globalisation. The result was a gradual turn towards irregular warfare, led by Rumsfeld and the DoD, designed to ensure ‘full spectrum dominance’ across all modes of conflict. This pre-dated the insurgency in Iraq and the promotion of counterinsurgency in the US Army by General David Petraeus and others. Policymakers' reluctance to acknowledge the insurgency in Iraq was not down to a failure to understand the concept of IW, but because they had viewed Iraq in conventional terms for so many years and were reluctant to admit their mistake. 相似文献