反应堆控制棒驱动线故障分析

本文分析了反应堆控制棒驱动线几种典型故障发生的原因和机理,并提出了消除故障的改进措施。     

多维六角形节块动力学程序系统的开发及验证

以多维六角形节块中子动力学程序HENKO的理论模型为基础,研制成功六角形组件的反应堆多维瞬态分析程序系统,提出了一种处理控制棒尖点问题的方法.通过VVER一号国际基准问题的验算,验证了本程序的正确性.     

核反应堆内中子泄漏数学模型研究

导出了点堆中子动力学方程中的中子泄漏表达式 ,使点堆中子动力学方程的精度提高 ,应用领域可从反应堆冷启动一直到瞬发超临界     

反应堆时空动力学方程的解法研究

利用分离变量法导出了均匀圆柱形反应堆时空中子动力学方程的近似解析解,它满足反应堆运行现场所需的计算速度和精度要求,对舰船反应堆安全运行有重要意义.     

用正则化方法对频谱有限信号进行外推的新算法

本文给出了频谱有限信号外推的一个新算法,首先考虑了问题的不适定性,然后用正则化方法构造一个稳定算法,因本文把噪音η(t)看成是L~2〔-T,T〕(T > 0)中的函数,且当integral from n=-T to T (|η(t)|~2dt→0时,外推在(-∞, ∞)上一致逼近准确信号,所以有较强的应用价值.最后还给出了外推的误差估计.     

钠冷快速中子增殖反应堆钠火研究综述

核电站是利用原子核裂变反应放出能量发电的装置,其核心是核反应堆。介绍了核电研究背景和钠冷快速中子增殖反应堆,指出钠冷快堆核电站的主要消防安全隐患是钠循环工艺的泄漏火灾,对国内外钠火研究现状进行了详细介绍,提出了钠火研究的主要内容及关键技术。     

船用核反应堆提棒外推临界优化研究

因稳定时间受限,传统的倍增公式导出的外推临界公式计算结果大于实测值,偏危险;文中根据新的中子倍增公式导出了外推临界计算的新公式,实例计算表明,该公式比传统的外推临界公式精确且偏安全.     

船用反应堆堆芯物理计算软件包的研制

基于船用反应堆结构特点与运行方式 ,通过对核电站大型机版堆芯物理计算软件的移植与修改 ,研制了微机版船用反应堆堆芯物理计算软件包 .可用于船用反应堆燃料组件参数及堆芯三维细网临界与燃耗的计算研究     

基于应急运行的核动力装置一回路小破口失水事故

针对船用核动力装置运行的特殊性,指出基于应急运行的事故研究对有效地维持机动性有重要意义.选用不可隔离的小破口失水事故进行分析计算,重点研究破口大小和不同处置对反应堆运行时间的影响.结果表明,若破口尺寸在某一范围内时,可以保证反应堆在一定时间内实现应急运行,并且在一定条件下通过降功率可以延长运行时间.     

核反应堆最小烧毁比计算的新方法

用传统算法求得最小烧毁比的值总是大于实际值,使计算结果偏于危险.根据实验测量的实际情况提出了一个新的算法,克服了上述缺点,这对反应堆热工设计与安全分析都有重要的意义.     

Helping hands: civil–military cooperation and Italy's military operation abroad

In the Post-Bipolar Era the growing complexity of the military operations requires a new approach for the resolution of international crises. Since the end of the Cold War, peace support operations (PSO) have become the mainstay and principal occupation of most Western armies. At the same time, Italy has been one of the most important actors in such an area. The article focuses on the cooperation between military and civil components (a process called CIMIC) as a key variable in the Italian PSOs. We will analyse in detail the main lessons learned from past military interventions as well as the general context in which new tendencies are taking place. The maintaining of a minimum security frame becomes essential to fulfil activities ‘collateral’ to the mission: reconstructing services and infrastructure, food distribution, water and medication, law and order, de-mining, training of local forces, and supporting local institutions. These are the main tasks to obtain thrust and support from the population.     

Terrorism,insurgency, kidnapping,and security in Africa's energy sector

Energy continues to serve as the bedrock of modern economies and the main driver of modern society. For Africa, the production and supply of energy resources such as crude oil, natural gas, uranium, coal, biomass, biofuels and other renewables are an important source of employment, rents, taxes, royalties and profits. This sector brings in several tens of billions of dollars of revenue annually. The production and delivery of such resources, however, depend on critical infrastructures such as pipelines, refineries, processing plants, terminals, rigs, electrical energy pylons, substations, pump stations, vessels, and tankers. These infrastructures have been attacked by terrorists, insurgents, vandals and saboteurs, all of whom see them as targets against which to register their grievances and extract concessions from the state. This paper is a chronological account of some of the documented incidents of terrorism, insurgency, kidnapping, destruction, sabotage, and human casualties suffered in the oil and gas sectors in Africa between 1999 and 2012. It is based on data extracted from the databases of the RAND Database of World Terrorism Incidents and the University of Maryland's Global Terrorism Database (GTD).     

A1 Qaeda and the radical Islamic challenge to western strategy

The September 11 global crisis prompted by the attacks on the World Trade Center and the Pentagon raises major questions concerning the nature and trajectory of terrorism in the post-Cold War global order. Hitherto, terrorism has been largely debated by analysts at the level of nation states. Terrorist and insurgent movements have also been largely anchored in nationalist and ethnic power bases even when they have sought to mobilise a transnational ideological appeal on religious or class grounds. There have been a few exceptions to this pattern such as the alliance between the German Baader-Meinhof group and the Japanese Red Army Faction, but even such international alliances as this did not, until at least the 1980s, presage anything like a global terrorist network necessitating a global strategic response. This study examines terrorism and global strategic responses.     

Tacit support for terrorism: The rapprochement between the USSR and Palestinian guerrilla organizations following the 1967 war

This article demonstrates the inconsistent and wavering Soviet attitude towards national liberation movements in general and the Palestinian organizations in particular. Until the late 1960s, the Soviets viewed these organizations with suspicion, hesitating to engage in political dialogue with them. However, in the 1970s, political and military events in the region, as well as modifications in the Kremlin's Cold War strategies, led to a general shift towards the Middle East in Soviet foreign policy. Soviet leaders showed increased willingness to provide certain Palestinian organizations with arms with which to conduct terrorist activities against Israeli, pro-Israeli, Jewish and Western targets. The article explores the complex relations between Palestinian organizations and the USSR in the field of international terror. The study also exposes and analyzes the nature and content of Soviet–Palestinian arms dialogues and transactions. It provides clear evidence that Soviet policymakers and other luminaries were fully informed of, and sometimes directly involved in, these transactions and dialogues at the highest levels.     

Helping hands: external support for the KNU insurgency in Burma

This article analyses to what extent the Burmese KNU insurgency made use of external support from states, refugees, and diasporas. Based on extensive fieldwork it is concluded that support from neighbouring states and refugees has for years kept the Karen rebellion alive. Western countries perceived forms of resistance to the illegitimate Burmese regime as just and have therefore played a crucial role in the continuation of conflict in Karen State. It is important that policymakers and donors as well as executing organizations continue to reflect critically on the way they exercise their work.     

基于GTST-DMLD-ESD的装备RMS建模仿真

装备的RMS是装备的重要设计参数,是影响战备完好和保障能力的关键因素.引入GTST-DMLD作为主要建模工具,建立起装备系统的RMS描述模型,以ESD为补充和扩展,对维修过程进行建模.并以GTST-DMLD-ESD模型作为装备RMS仿真的核心,对装备RMS仿真模型的总体框架进行了研究,并对各模块进行了较为详细的探讨.     

Cyber sheiks and grassroots jihadis: the war in Syria and the devolution of the Bosnian Salafi communities

ABSTRACT

What was the scope of the Bosnian jihadi participation in the war in Syria? Did the Bosnian volunteers tend to join one particular faction? Why did the Bosnian youngsters decide to join the holy war in the Levant? Was this an organized and hierarchical process or was this a grassroots movement? Last, were all the Salafis in Bosnia supportive of this dynamic or did this process cause internal frictions? These are some of the questions that this research will try to answer.     

Country survey XVI the defence sector in the economy of a declining superpower: Soviet Union and Russia, 1965-2001

The Soviet Union was able to develop a large military-industrial complex and become the world's second superpower despite deficiencies in its centrally planned economy because defence was given high priority status and special planning, rationing and administrative mechanisms were used to attain national security objectives. However, in the period 1976-85 the effectiveness of priority protection diminished and defence institutions experienced more of the problems typical of the shortage economic system. The heavy defence burden also created growing difficulties for the civilian economy. The attempts by the Gorbachev government to reform the defence sector and improve defence-economic relationships during perestroika (1985-91) uniformly failed. For most of the transition period, the Russian military-industrial complex has been adversely affected by its low priority status, cuts in defence spending, instability of the hybrid politico-economic system, and negative growth of the economy. The armed forces and defence industry have been reduced in size and their outputs of military services and equipment have fallen to low levels. Nevertheless, the Russian armed forces still have over one million troops, significant stocks of sophisticated conventional weapons, and a large nuclear arsenal. The government of President Putin has raised the priority of the defence sector, increased real defence spending, and adopted ambitious plans to revive Russian military power. It is likely, though, that tight resource constraints will hamper efforts to reform the armed forces and to upgrade weapons. By 2010 Russia will be an important, but not dominant, military power in Eurasia.     

Traffickers,terrorists, and a ‘new security challenge’: Russian counternarcotics strategy and the Federal Service for the Control of the Drugs Trade

The collapse of the Soviet Union precipitated the massive expansion of drug use and trade in Russia. The country now has one of the largest populations of injecting drug users in the world and has become the largest single-country market for Afghan heroin. In 2003 the Federal Service for the Control of the Drugs Trade was created to coordinate a comprehensive counternarcotics strategy appropriate to the scale of this threat. The service continues to face a number of challenges in its early stages of development. However, it has made considerable advances in improving responses to large-scale organised crime and in building international cooperation.