定向能武器技术的发展动向

随着激光、新材料、微电子、声光、电光等高技术的发展,利用各种束能产生强大杀伤威力的定向能武器已引起世界高度重视。定向能武器成为战场上高速移动目标的"克星",是能有效制敌的"杀手锏"装备,对未来作战样式和形态具有重要影响。文章系统分析了定向能武器的军事应用前景,详细剖析了世界定向能武器技术的研究进展及发展动向,给出了未来要大力发展的激光武器、高功率微波武器和粒子束武器关键技术,对于加快我军定向能武器装备发展,提升非对称制衡能力,具有十分重要的意义。     

基于微分平坦的高超声速滑翔飞行器轨迹规划

针对高超声速滑翔飞行器再入轨迹规划问题,提出了一种基于微分平坦理论的三自由度轨迹生成方法。在分析纵向运动简化模型的微分平坦属性基础上,将纵向参考轨迹规划问题映射到平坦输出空间,消除微分动力学约束的同时降低系统设计的维数,进而提高求解效率;采用全局插值多项式参数化平坦输出函数,将问题转换为非线性规划问题求解;设计比例-微分反馈控制律跟踪纵向参考轨迹,同时采用航向角误差走廊控制侧向运动,实现三自由度轨迹生成。仿真分析表明所提出的方法能够较快生成满足多种约束且性能优化的飞行轨迹。     

基于SNA参数的网络舆论系统状态差分分析

近年来,互联网在我国快速发展,网络舆论起着越来越重要的作用,对国家安全和社会稳定产生了重大的冲击和影响。针对网络舆论系统的状态进行研究,借助SNA方法,提出了可作为序参量的一些特征参数。在此基础上,设计了基于时间序列的SNA参数差分算法,实现对网络舆论系统的状态进行观测与分析。同时,对一个真实网络舆论进行实验仿真,验证了这种方法。     

增强网络技术在教学中的辅助作用

网络技术在教育教学当中的应用是深化教育体制改革、扎实推进教育公平的重要措施,也是对适应我国教育教学活动实际的教学模式的研究和重要探索。分析了网络技术辅助教学相比传统教学所具有的优势,并从开发和应用两方面对网络辅助教学进行阐述,同时展望了网络技术的发展前景及其对未来教育的影响。     

脉冲微分方程边值问题的全局分支与多解性

研究非线性脉冲微分方程边值问题,应用分歧技巧,得到非线性脉冲微分方程边值问题多个解的存在性结果.     

海军装备技术体系中的系统成熟度评价方法研究

采用系统成熟度评价方法能够有效控制武器装备研制的技术风险。文章详细阐述了海军装备技术体系中的系统成熟度评价需求,总结了国内外系统成熟度评价的研究前沿和应用情况,分析了系统成熟度评价的算法模型,提出了与我军装备发展过程相适应的评价等级定义,为系统成熟度评价方法的推广应用提供了参考。     

Mandated defence offsets: can they ever deliver?

Defence offsets are elements of defence procurement deals additional to the primary content. Offsets are usually expected to yield technological or industrial benefits to the purchasing country (e.g. countertrade, technology transfers, or additional jobs) and military buyers often require suppliers to make offsets available “cost-free.” The authors argued previously that such strategies achieve little of value to buyers that lack market power and are unnecessary otherwise, since purchasers with the market power to extract more value for money from foreign suppliers can do so anyway. This article also focuses on the supply side of offset deals. The USA is the world's largest defence offsets supplier but the US government opposes offsets demands as economically inefficient and trade distorting. Even if offsets are inefficient and trade distorting, they may still benefit a materiel-exporting country such as the USA as they may induce exports and create associated benefits for the offsets provider.     

关于军事科技新闻报道

信息时代下的新闻媒体正以全新的形态全方位展示着科技事件,而军事科技新闻报道也愈发因其针对性强、关注度高而成为军事新闻的重要分支。文章就如何写好军事科技新闻报道,从知晓军事科技新闻内涵、将军事科技新闻写成老百姓的日常读本、严控新闻报道中的军事秘密三个方面谈了一些自身体会。     

日本防卫产业发展潜力问题分析

日本自卫队追求能力提升和活动范围扩大的努力受到其防卫产业发展的局限。防卫预算的有限直接导致防卫产业的市场规模狭小。部分核心技术自主研发的缺失限制了防卫产业独立发展的能力。融合式发展模式在成本核算、劳动生产率提升和产业发展稳定性等方面限制了防卫产业发展的潜力。     

Multiproduct batching and scheduling with buffered rework: The case of a car paint shop

We study a problem of scheduling products on the same facility, which is motivated by a car paint shop. Items of the same product are identical. Operations on the items are performed sequentially in batches, where each batch is a set of operations on the same product. Some of the produced items are of the required good quality and some items can be defective. Defectiveness of an item is determined by a given simulated function of its product, its preceding product, and the position of its operation in the batch. Defective items are kept in a buffer of a limited capacity, and they are then remanufactured at the same facility. A minimum waiting time exists for any defective item before its remanufacturing can commence. Each product has a sequence independent setup time which precedes its first operation or its operation following an operation of another product. A due date is given for each product such that all items of the same product have the same due date and the objective is to find a schedule which minimizes maximum lateness of product completion times with respect to their due dates. The problem is proved NP‐hard in the strong sense, and a heuristic Group Technology (GT) solution approach is suggested and analyzed. The results justify application of the GT approach to scheduling real car paint shops with buffered rework. © 2014 Wiley Periodicals, Inc. Naval Research Logistics 61: 458–471, 2014