基于嵌入式Web的HART仪表远程控制系统

为解决有线HART仪表在恶劣环境中远程传输时易受影响、成本高等问题,结合嵌入式linux系统在远程工业控制中的应用,提出了一种基于嵌入式Web的HART仪表远程控制系统。采用S3C2440处理器和DM9000网络芯片,在嵌入式系统上移植Boa Web服务器,并运用CGI技术实现动态网页控制。利用该控制系统,客户只需在室内通过浏览器即可对HART仪表进行远程监控,且不需要专门的组态软件。     

They protect us,but are they using protection? The potential impact of HIV on the South African Police Service

The drivers of HIV/AIDS in the South African Police Service (SAPS) and impact of the disease on this workforce are neglected areas of research. Existing evidence suggests that while the occupational risk for contracting HIV is low, there are factors associated with the profession that, if left unmanaged, place police officers at risk of contracting HIV. This study's two aims are to identify the potential pathways of HIV infection within policing services and determine the probable impact of HIV/AIDS on SAPS. Through a systematic literature review on HIV/AIDS within police services, and by analysing selected SAPS human resource data, the causal pathways and impact of HIV/AIDS on police services are explored. The study finds that police officers (particularly male officers) are likely to be highly susceptible to HIV infection as a result of risky sexual behaviours born out of occupational characteristics such as high levels of stress, difficult working conditions, living away from home and interactions with sex workers. The problem is exacerbated by the ‘macho’ culture that often prevails among police officers. HIV/AIDS interventions within SAPS must focus on sustained behaviour change. Further, HIV programmes must equip officers with the knowledge and awareness to avoid engaging in high-risk sexual practices that may compromise their health and the effectiveness of the policing service.     

Does Military Spending Really Matter for Economic Growth in China and G7 Countries: The Roles of Dependency and Heterogeneity

This study revisits the causal linkages between military spending and economic growth in China and G7 countries (i.e. Canada, France, Germany, Italy, Japan, the UK, and the USA) by focusing country-specific analysis for the period 1988–2010. The panel causality analysis, which accounts for both cross-country dependency and heterogeneity across countries, is employed in this study. Our results find evidence of the neutrality hypothesis for Italy, France, and Germany, the military spending–growth detriment hypothesis for both Canada and the UK, and one-way Granger causality running from economic growth to military spending for China. Furthermore, we find a feedback between military spending and economic growth in both Japan and the USA. Thus, our results do not support that one size fits all.     

Aid versus sanctions for taming oppressors: theory and case study of the Iraqi Kurds

We model an oppressor aiming at victimizing an excluded group in his country, with two main variants. A foreign power affects his behaviour using either conditional aid, subject to the dictator’s participation constraint, or the threat of sanctions, broadly defined, subject to the credibility constraint. The choice between the two is either determined by the latter, or by their relative cost. Aid is preferred when the threat of sanctions is ineffective, and sanctions are too expensive. Sanctions might be imposed, if the threat is ineffective. A case study of the Iraqi Kurds after Iraq was subject to sanctions is presented.     

TERRORISM: FACTS FROM FIGURES 1

If international terrorism is on a rising trend, an important source of confirmation or refutation of this is time‐series data on terrorist activity. Using chiefly data collected by the RAND/MIPT consortium we show using basic statistical analysis that in the period 1968–2005 the yearly number of all international terrorist incidents shows no trend over time, but fluctuates year on year in a random manner. On the other hand some indicators do show a definite trend over time, principally the steady rise in the number of incidents that are death‐dealing in nature. A further conclusion is drawn, showing that the proportion of these incidents leading to deaths above a given level is virtually fixed.     

MONEY IN SOUTHERN AFRICAN POLITICS

“Lack of money is the root of all evil”

George Bernard Shaw

In a environment where party financing, private funding in particular, is generally a laissez-faire business, as in most Southern African countries, there is the real risk that interest groups and wealthy individuals will buy influence in political parties and in so doing erode public confidence in the political system. Because they are neither open to public scrutiny nor subject to any legislative restraints, huge private donations can, and often do, come with strings attached. This lack of transparency and openness, as well as mechanisms to prevent it, provides ample ground for influence peddling, where those who pay the piper call the tune. Left unchecked, this party funding scenario will continue to be a serious indictment of the region's democratisation projects, crippling democracy and stunting economic development. This article consid     

THE ‘EXPANDING TORRENT’: BRITISH MILITARY ASSISTANCE TO THE SOUTHERN AFRICAN REGION

In May 2012, Zambia's Inspector-General of Police announced a crackdown on sex workers. This commentary discusses the rationale behind this proposed crackdown and the problems associated with such a policy response.     

Does Intent equal Capability? Al-Qaeda and Weapons of Mass Destruction

The prospect of terrorists deploying weapons of mass destruction (WMD) is often referred to as the foremost danger to American national security. This danger has become more realistic because of al-Qaeda's expanding global network and the expressed willingness to kill thousands of civilians. In the past four years, numerous media reports have documented the group's ongoing quest for WMD capabilities; many reports have detailed al-Qaeda members’ attempts to manufacture or obtain certain chemical, biological, radiological, and nuclear (CBRN) agents to use in WMD against targets in the West and the Middle East. Yet the question remains: Does al-Qaeda's current WMD capability match its actual intent? While most studies of the group have focused on its explicit desire for WMD, allegations of CBRN acquisition, and the killing potential of specific CBRN agents, few open-source studies have closely examined the evolution of al-Qaeda's consideration of WMD and, most notably, the merit of actual CBRN production instructions as depicted and disseminated in the group's own literature and manuals. The following report will examine the history of al-Qaeda's interest in CBRN agents, the evolution of the network's attitude toward these weapons, and the internal debate within the organization concerning acquisition and use of WMD. More so, the following research will assess the validity of actual CBRN production instructions and capabilities as displayed and disseminated in al-Qaeda's own literature and websites.     

基于云理论一二元语义的雷达装备保障指挥效能评估模型

针对云重心和云模型评判方法存在的信息丢失、难于评判以及信息扭曲等问题,从确定权重等级、评价集和评价结果3个方面对模型进行了改进和完善．应用二元语义确定指标权重,避免了评价信息的丢失和扭曲,采用综合云的思想确定评价集,充分利用评价者给出的信息,简化相似云的理论来定量衡量评价结果,从而建立了基于云理论一二元语义的雷达装备保障指挥效能评估模型．     

弹药洞库有害气体分布规律研究

以计算流体力学（CFD）为理论基础,应用GAMBIT软件对洞库内的有害气体进行几何模型构建和网络划分,用FLUENT软件对所建模型中有害气体的扩散和分布规律进行模拟分析,并对单一释放源条件下扩散规律进行比较,分析弹药堆垛对气体扩散的影响．通过对洞库内有害气体的整体分布规律的研究,找到了库房内有害气体浓度最高的位置．最后,通过实验对仿真结果进行验证．