基于改进的BP算法的舰载C4I威胁判断模型

为解决传统舰载C4I威胁判断模型的不足,寻求适应信息化作战要求的舰载C4I威胁判断模型,将神经网络引入舰载C4I系统,提出了基于BP神经网络的威胁判断模型,并对BP算法进行了改进;通过Matlab仿真计算,结果表明该方法计算速度快、精度高.     

利用数形结合方法求解几类代数问题

数学研究的对象是现实世界的数量关系(数)和空间形式(形)。“数”和“形”常按照一定的条件相互转化。数形结合思想是数学的重要的思想方法之一,并蕴于数学基础知识和基本技能之中,在数学解题中应用十分广泛。其实质是将抽象的数学语言与直观图形结合起来,发挥“数”与“形”两种信息的转化及其优势互补与整合,使逻辑思维与形象思维完美统一起来。对于培养学生的创新意识和创造思维具有积极的促进作用。     

Country survey V: Poland and its arms industry

This study — which is a country survey — deals with basic problems of the functioning of the Polish arms industry in the conditions of systemic transformation, that has taken place in Poland since 1989. It also reflects new political and military conditions and changes in the economic system, commonly called marketization. The study is focused on reasons for the bad economic state of the enterprises engaged in military production, which include a drastic drop in demand on home and foreign markets. The study discusses the main direction of activities that are planned to reshape and adjust military production to the new, changed conditions covering such problems as ownership and organization changes as well as prospects for conversion.     

The economic effects of international trade in armaments in the major western industrialized and developing countries†

We have used the Michigan Model of World Production and Trade to assess the impact of exports and imports of armaments (based on 1980 data) on sectoral trade and employment and other economic variables in the major Western trading countries. If the United States were to place a unilateral embargo on its arms exports and imports, we calculate that it would experience a comparatively small amount of employment displacement in the aggregate and that most of this displacement would occur in the transport equipment and electric machinery sectors. If all the major Western countries were to place a multilateral embargo on their arms trade, the sectoral effects on the United States would be similarly small. But the sectoral effects in several other industrialized and developing countries measured as a percentage of sectoral employment, would be larger, indicating potential short‐run adjustment problems in labor markets in some cases.     

航空导航技术的发展方向

针对航空导航的特点,对现有航空导航装备的特点进行了分析,并结合未来作战的需求,给出了航空导航技术的发展方向,主要是组合式导航体制,将卫星导航与惯导的组合进一步与地形辅助导航、地球物理导航、地磁导航等方式结合起来.     

Unrestricted warfare: Review essay I

During the Nigerian Civil War (1967–1970), France chose to support Biafra, but only on a limited scale, providing mercenaries and obsolete weaponry to Ojukwu's regime. General Charles de Gaulle's assistance to Ojukwu was conditioned by the French military drawdown after 1961, the increased power of French secret services on the continent, and the interventions in Katanga (1960–1963), Gabon (1964) and Chad (1968–1972). France supported Biafra primarily to protect its former colonies from Nigeria, stop Soviet subversion and acquire an economic foothold in the oil-rich Niger Delta. De Gaulle chose a limited strategy for two reasons. If Biafra won the war, France would be Biafra's greatest ally. If Nigeria won the war, France could extricate itself from the situation relatively easily and re-establish relations with the Nigerian government, which is what ultimately occurred.     

Army reconstruction in the Democratic Republic of the Congo 2003–2009

Since the peace agreements of 2002–2003 which ended the second war in the Democratic Republic of Congo, reconstruction of the army has been an inherently political process, in common with other attempts to carry out security sector reform (SSR). This article briefly sketches out the Congolese army's history, then attempts to fill a gap in the literature on Congolese SSR by detailing what can be found of the actual structure and shape of the present army. The efforts that have been made to reform the army are then examined, followed by a conclusion which examines the major issues and possible ways forward.     

战时装备维修保障资源优化模型

维修资源在抢修过程中的分配决定了抢修活动的平均处理时间和等待时间,针对抢修实施时维修资源的分配,研究资源的优化配置使抢修时间最小的问题.在抢修过程中使抢修时间最小的目标和约束条件下,提出了资源配置优化的排队模型,并结合遗传算法给出了求解最优配置模型的方法,通过实例分析说明了模型和方法的应用情况.资源配置优化模型和算法已成功应用于集群装备保障决策系统的开发.     

浅谈新课标下高中物理实验探究教学

在新课程改革中,新课标下的物理教材,更充分地体现出以学生为主体的原则。本文从开展探究性实验教学;实验教学引入不要拘泥于传统、强化实验创新设计等几方面阐述了如何在物理实验教学中培养学生的创新能力。