一种由条件确定导引时机的线导鱼雷导引方案

基于对水下平台获取目标信息客观实际的分析,指出以固定的导引周期、自动实现线导鱼雷整个过程的导引是难以实现的.为此,线导鱼雷导引方案设计必须综合利用各种渠道所获得的目标信息资源和鱼雷的高速制资源,才能大幅提高线导鱼雷的使用性能.通过仿真研究提出:“由条件确定导引时机”的概念,给出利用“依赖条件调度的管理器”对来自各方面的目标方位进行优先级排序并控制导引算法调度时机的技术方法;利用“间断导引”兼顾导引平台听测与鱼雷快速接近目标之矛盾的技术方案,给出了确定“听测速度”、转换方法和转换时间间隔的技术方法和途径.     

武警院校教员队伍专业能力建设研究

武警院校教员队伍专业能力建设,不仅是教员自身发展的需要,更是院校教育改革发展与培育高素质军事人才的需要。从解析武警院校教员队伍专业能力的内涵入手,通过分析现状,从更新观念、完善机制、实践培养、优化环境四个方面,提出了加强武警院校教员队伍专业能力建设的对策,以期为提高武警院校教员队伍专业能力提供理论支撑。     

超细粒子对环氧树脂的增韧改性研究

用NW-2辛酯偶联剂改性过的复合氧化锌(ZnO)超细粒子对环氧树脂进行增韧,借助于SEM和力学性能测试手段研究了ZnO粒子的形貌以及NW-2辛酯偶联剂改性复合ZnO粒子在环氧树脂体系中的增韧情况及其机理.结果表明:经过NW-2辛酯偶联剂改性的复合超细ZnO粒子对环氧树脂具备良好的增韧效果.     

Mechanical behavior and failure mechanism of polyurea nanocomposites under quasi-static and dynamic compressive loading

Polyurea is an elastomeric material that can be applied to enhance the protection ability of structures under blast and impact loading.In order to study the compressive mechanical properties of SiC/polyurea nanocomposites under quasi-static and dynamic loading,a universal testing machine and split Hop-kinson pressure bar(SHPB)apparatus were used respectively.The stress-strain curves were obtained on polyurea and its composites at strain rates of 0.001-8000 s-1.The results of the experiment suggested that increase in the strain rates led to the rise of the flow stress,compressive strength,strain rate sensitivity and strain energy.This indicates that all of the presented materials were dependent on strain rate.Moreover,these mechanical characters were enhanced by incorporating a small amount of SiC into polyurea matrix.The relation between yield stress and strain rates were established using the power law functions.Finally,in order to investigate the fracture surfaces and inside information of failed specimens,scanning electron microscopy(SEM)and micro X-ray computed tomography(micro-CT)were used respectively.Multiple voids,crazes,micro-cracks and cracking were observed in fracture surfaces.On the other hand,the cracking propagation was found in the micro-CT slice images.It is essential to understand the deformation and failure mechanisms in all the polyurea materials.     

英语阅读中如何猜词解义

在阅读英语时,首先遇到的问题是生词。如果时时停下来查词典,就会影响思维的连续性、阅读速度甚至丧失阅读兴趣。外语教学中常常提到根据上下文了解词义,即在碰到难以理解的词语时,可以引导学生根据词汇语境线索和已知信息及构词法来进行推测。掌握猜词解义的方法,有助于提高阅读能力。     

一种可用于指挥自动化网的USB安全钥设计

介绍了一种用于指挥自动化网络中进行身份认证的USB安全钥安全管理系统,给出了使用USB安全钥进入网络终端时的认证机制,调用与浏览服务器信息时的认证流程,以及USB安全钥软、硬件的设计要点.在该安全钥管理系统中可运行重要软件的关键程序和查询关键信息,有效增强保密强度,安全钥采用USB接口,具有支持热插拔、携带方便等优点.     

弹炮一体化防空系统的服务概率模型

弹炮一体化防空系统是未来高技术局部战争中应急机动部队的主要防空武器。首先给出了弹炮一体化防空系统服务概率的定义 ,然后通过研究这种防空武器对目标服务过程的特点 ,建立了服务概率计算模型 ,为评价这种防空武器的射击能力和系统效能 ,提供了必要的分析手段     

HLA在战术C3I系统仿真平台中的应用

基于仿真技术规范 HL A,提出一种战术 C3 I系统仿真平台构建方法 ,给出了基于 HL A/ RTI仿真平台的设计方案 ,并对仿真的执行过程进行了深入分析。     

On the contribution of defense innovation to China’s economic growth

As the most knowledge-intensive industrial sectors, China’s defense industries are developing very fast. The present paper will explore the contribution of China’s defense innovation to its economic growth. Cobb–Douglas production function, integrating defense and non-defense stock in knowledge, is applied during the course. In addition, an input–output analysis of defense equipment procurement was done. Positive effect of China’s defense innovation on economic growth has been revealed by comparing the results from the two methods. And some suggestions are made to strengthen the effect.     

舰艇编队作战指挥训练模拟系统组织架构与运行技术

在对舰艇编队作战指挥训练需求分析和训练组织方法梳理的基础上,建立了舰艇编队作战指挥训练模拟系统的系统架构,提出了多层次导调控制技术、一致性训练态势生成分发技术、可扩展训练评估技术,并将其应用于某型编队作战指挥训练模拟系统中,初步验证了该项舰艇编队作战指挥训练模拟系统组织架构与运行技术的可行性。