费氏曲线在大型购物中心防火安全评估中的应用

大型购物中心结构复杂,人员密集,火灾隐患较多,提前做好防火安全评估工作十分重要.利用现场调查法、实例分析法等,结合费氏曲线防火安全评估法针对大型购物中心的空阃特性和防火对策作探讨,并对某购物中心进行评估,利用疏散允许时间的人员安全曲线,得出该购物中心在发生火灾时的人员安全曲线.通过对防火安全方法进行分析,体现出费氏曲线在大型购物中心防火安全评估应用中的适用性、发展性.     

Country survey VIII: Federal republic of Yugoslavia

This survey article focuses on defence economics issues and provides data and analysis on the Federal Republic of Yugoslavia's (FRY) defence policy, defence spending, the size of its armed forces, its defence industries and the cost of the civil war. The main section is devoted to the period from 1990 to the present and deals with the following aspects: the situation after the break‐up of the former Yugoslavia, general economic data; the cost of the civil war, the defence budget; the armed forces; the manufacture of armaments and the structure of the defence industry.     

The future of European defence policy: An economic perspective

European defence policy has been dominated by politics. This paper shows how economic principles can be used to derive guidelines for the formulation of European defence policy. The inefficiencies of the EU's existing defence arrangements are identified. It is shown that there is scope for efficiency improvements in the EU's Armed Forces and its defence industries.     

AFRICAN REGIONAL ORGANISATION' PEACE OPERATIONS

This paper reviews recent developments among African regional organisations in undertaking peacekeeping operations, as well as in preparing for future missions. It focuses on those that have been the most active: the Organisation of African Unity/African Union, the Economic Community of West African States and the Southern African Development Community. The paper goes on to briefly describe and analyse the activities of the French, UK, and US capacity-building programmes designed to develop African peacekeeping capacities. The author then identifies some specific concerns and recommends actions to help meet today's challenges. The paper concludes with a short analysis of African organisations' capacities and proclivities to provide a peacekeeping force for Sudan.     

Colombia: Changing strategy amidst the struggle

From 1965 to the present, Colombia has been confronted by the insurgency of the Revolutionary Armed Forces of Colombia (FARC). The threat reached a new level in 1996 with the advent of mobile warfare, whereby large units sought to neutralize the military in an effort to seize power and institute a Marxist-Leninist regime. Unlike Vietnam, what followed was a regaining of the strategic initiative by the government and a decimation of the insurgent threat. This was accomplished with US assistance but from first to last was driven by Colombian leadership and strategy. The strategy which led to this signal change, ‘Democratic Security’, unfolded under the leadership of President Álvaro Uribe. It was a civil–military partnership, which sought to expand the writ of Colombian democracy to all elements of society. Securing the population provided the shield behind which economic, social, and political life could occur as driven by the will of the people. It was the agreement upon legitimacy as the strategic goal and reform as the route to that goal which allowed the Colombians and the Americans to work so well together.     

Lessons learnt? Cultural transfer and revolutionary wars, 1775–1831

Did participants in small wars in the period 1775–1831 learn from previous or contemporary examples? While this is difficult to prove for participants who left no written records, there is considerable evidence in existing publications by practitioners that they did indeed draw out lessons from recent insurgencies, either from their own experience or from events elsewhere which they studied from afar, especially the Spanish Guerrilla, which had already become legendary. Most authors showed an interest in how to stage insurgencies rather than in how to quell them. Even then, transfer did not come in a package of tactics-cum-values, but in each case in different configurations.     

基于弹迹跟踪预测的舰艇定位方法

舰艇采用实测舰位法对岸上不可见目标进行远程攻击时,在已获取目标地理信息的情况下,我舰定位误差往往成为影响打击精度的关键因素。针对惯性导航长时间工作产生积累误差,以及卫星导航在战时易受干扰等情况,提出利用对单发弹丸的跟踪与预测,结合提取的岸上目标绝对定位数据和弹丸落点的偏差信息,反向推算发射舰相对岸上目标的位置,可较为精确地修正我舰的绝对定位数据,为后续射击提供修正手段。该方法减少了战时舰炮武器系统对导航的依赖,仅靠对单发弹丸跟踪和预测,即可提高后续对岸射击的精度。     

军用红外目标探测的特点、发展和应用前景

论述了中波红外探测器和长波红外探测器的特点、发展以及ＦＬＩＲ（前视红外雷达） 成像系统用于探测地面目标、ＩＲＳＴ（红外搜索和跟踪） 点源探测系统用于探测空中目标和红外成像导引头的应用前景、发展趋势。     

载人飞船上升段轨道的Newton迭代设计法

本文对载人飞船上升段轨道的一种工程设计方法进行了探讨。该方法的特点是根据上升段飞行的特征,运用飞行力学原理选定其控制规律的数学模型,然后根据上升段轨道的中间约束条件和终端约束条件,利用Newton迭代法确定模型中的各待定参数。本文给出了该设计方法的流程图,并通过模拟计算论证了该设计方法的可行性。