判定执行的功耗优化

判定执行消除分支指令,有助于提高性能,但执行额外的指令会造成能量浪费。尽早作废无效的判定指令,可以减少能量消耗。针对Itanium2处理器,修改流水线功能划分,提前读取谓词的值,提出谓词相关情况下的流水线停顿方法。模拟结果表明,提前读取谓词并作废无效指令,能减少能量浪费,提高能量效率。     

基于传递闭包的任务时序依赖关系建模方法

建立正确、有效的任务模型是正确引导出信息系统需求的关键步骤。文中针对任务间时序依赖关系,给出与任务建模相关的若干形式定义和命题,帮助分析人员判断任务间的并发和死锁。给出任务间时序依赖关系建模的详细步骤,并根据时序依赖关系的传递性质,给出一种任务关系图上的传递闭包方法,可以帮助分析人员直观地判断任务间时序依赖关系的问题和错误,科学、合理地标记各个任务的时序等级属性,帮助建模人员从全局上明确各个任务在执行时所处的相对位置,以及在每个阶段需要同时展开哪些任务。     

关系数据库中的属性约简

文中给出了一个函数依赖概念的推广,证明了它与知识发现领域中的许多重要概念都有密切的联系,并应用它得到了知识发现领域属性约简的一个有效完备的多项式算法.     

Coping with traps of vulnerability: a review of the impact of post-colonial issues on the independence of South Sudan

In a world virtually free of slavery and colonialism and one mainly driven by the sovereign state rationale, allusion to manifestations or the existence of some form of these phenomena within a state is often received with dumbfounding indifference or denial. However, a form of rule that had continued in South Sudan long after the departure of the British in 1956 was colonial both in its quintessence and flair in that it disenfranchised its citizens and denied them the most basic freedoms, services and development. Under this establishment, resistance against the coercive vision of the state was brutally suppressed for many decades. This state of affairs finally ended in July 2011. Nonetheless, there is a miscellany of unresolved post-colonial issues between the two countries that warrant attention. These include security and the demarcation of borders, the issue of ludicrous transit fees for South Sudan's oil exportation through Sudan, citizenship, external debt repayment, etc. These issues are part of traps inherited from the anti-colonial struggle, which have now supplanted the old ensemble of North–South conflict paroxysm. As a matter of urgency, the two countries will have to wrap up the incomplete process of negotiation on these substantive issues. The talks should be approached with a new mindset based on the new reality of two sovereign states. To the extent that it is widely established that South Sudan and Sudan must coexist peacefully in order to develop into viable entities, such mutual dependency must be based on equality and respect.     

基于依赖矩阵的Web服务组合故障诊断

为了保证指挥信息系统在动态环境下能够提供持续可靠的组合服务,提出一种利用依赖矩阵对Web服务组合故障原因进行诊断的模型,对依赖矩阵的建立进行了详细说明。然后,基于构造的依赖矩阵,提出改进的贪心算法对失效情况进行探测,并设计了基于二分查找的故障定位算法。实验模拟表明,提出的模型能够利用少量探测就能监测整个服务组合流程的运行情况,并定位找到错误源。     

ANALYSING DEFENCE DEPENDENCY: THE IMPACT OF THE ROYAL NAVY ON A SUB‐REGIONAL ECONOMY

This paper provides a methodology for estimating the economic impact of defence spending at a sub‐regional level. It does so by calculating the income and employment generated by Britain’s Royal Navy and associated defence activities in the City of Portsmouth and its surrounding area, during the financial year 2003–2004. In an era of military consolidation, the paper offers an insight into the multifaceted impact of defence‐related expenditure. Hence, it presents a generic framework that could prove useful to other researchers when seeking to measure the sub‐regional impact of naval, airforce and army facilities in other national contexts.     

The Millenials’ war: dilemmas of network dependency in today’s military

This work is about how the United States military has become dependent on networked technology. As arguably the largest contributor to national security, it has become so dependent that its chief doctrine integrates networked technology into nearly every specialty, with particularly intense focus on Network Centric Warfare. As the military’s old guard is replaced by the highly technical Millenial Generation, there is cause to pause when assuming this techno-acuity brings nothing but advantage and success. Vulnerabilities stemming from such extensive dependence offer opportunities for exploitation that have not gone unnoticed. The first step to moving forward from this point is to fully understand the extent to which the military has become dependent on computer networks. It might be the Millenials’ war today, but it would be quite unwise for the United States military to think about it and fight it in a purely Millenial way.     

关系数据库自动生成器

本文论述了使用函数依赖(FD)的概念进行关系数据库的设计。对于给定一组函数依赖,确定全部最小覆盖的传统综合算法进行了改进,给出了一个改进的新算法。并且开发了称为“关系数据库自动生成器”的关系数据库自动设计工具,该工具使用编译dBASEⅢ语言编写,在长城0520机上运行,它支持需求分析阶段的信息收集,关系数据库设计阶段的概念性和逻辑性设计。     

Addressing the “headwinds” faced by the European arms industry

ABSTRACT

The European arms industry is challenged by several adverse “headwinds.” Fragmentation leads to costly duplications and, in conjunction with stagnating budgets and sharply increasing costs, prevents firms from exploiting economies of scale and learning. This is exacerbated by size differentials vis-a-vis the leading US arms manufacturers and competition from emerging producers. As some “headwinds” are self-enforcing, far-reaching industrial and policy responses are required to improve the industry's outlook. As exports may not indefinitely compensate for low domestic demand, there is an economic imperative for further cross-border collaboration and consolidation. Despite various EU policy initiatives, progresses regarding the European Defence Equipment Market and strengthening the European Defence Technological Industrial Base have been relatively slow. It remains to be seen whether the European Defence Fund will be the proclaimed “game-changer,” raising competitiveness of the European arms industry. At the same time, the UK's withdrawal from the EU adds uncertainties.