脉冲偏压离子镀的研究现状

脉冲偏压电弧离子镀的成膜过程远离热力学平衡态,与直流偏压电弧离子镀相比,具有成膜温度低、薄膜质量好和应力低等优点。从大颗粒净化作用、低温沉积、沉积速率、微观组织结构、内应力与结合强度、硬度等方面,综述了近年来脉冲偏压对薄膜性能影响的研究结果,重点讨论了机理方面的新成果,综述了脉冲偏压电源的研究状况,并对脉冲偏压电弧离子镀技术的应用前景进行了展望。     

CAN总线在装甲车辆故障诊断与状态检测系统中的应用

针对目前装甲车辆内部设备种类繁多、故障机理复杂且缺乏较为全面的实时在线故障诊断与状态检测手段这一问题,提出了一种基于CAN总线的网络化在线故障诊断与状态检测系统设计方案,进行了CAN总线通信网的短帧应用层协议开发以及系统实现。该系统具有实时数据采集、在线故障诊断和状态检测等功能,且扩展性强。该系统通过了实车试验,测试结果验证了该方案的可行性和系统工作的可靠性。     

基于状态观测器的混沌系统鲁棒同步设计

研究了在有界干扰情况下一类非线性反馈混沌系统的鲁棒同步状态观测器设计问题。基于Sylvester矩阵方程的参数化解,将非线性反馈混沌系统的鲁棒同步状态观测器设计问题转化为带有约束条件的优化问题,通过解决该优化问题得到鲁棒同步状态观测器的增益矩阵,从而达到了干扰信号解耦目的。数值算例及其仿真结果表明:该非线性反馈混沌系统的鲁棒同步状态观测器的设计方法是简单有效的。     

六相无刷直流电动机谐波转矩的分析与计算

无刷直流电动机具有诸多优点,但运行中仍然存在转矩脉动问题.分析了六相无刷直流电动机的工作原理,推导了六相无刷直流电动机的状态方程,采用状态变量法对电机转矩产生的关键量--反电势波形和电流波形进行了仿真和试验研究,对六相无刷直流电动机的谐波转矩进行了分析和推导,得出了通过减小电流滞后角可控制甚至消除正弦谐波脉动转矩的结论.     

固体灭火剂爆炸抛撒半径分析

根据爆轰产物等熵膨胀原理和流体动力学理论,通过对灭火剂抛撒3个阶段的理论分析,推导出灭火剂抛撒的理论半径,估算灭火弹的灭火威力。在此基础上进行实爆试验,对两者的值进行比较分析,取得了良好的一致性,为优化灭火弹设计,提高灭火弹威力起着积极的指导作用。     

双模量子态在原子介质中的存储

从四能级暗态极化子出发,讨论双模量子场与原子介质的信息转换过程以及2信号场之间的信息转换过程。利用双-Λ型四能级原子系统,可以存储双模量子态(包括一些纠缠态),从理论上解释了双模量子信息在介质中的"写入"和"读出"过程。提供了双信号场存储的实验方案。     

运用ECO开发基于UML的工作流系统

运用UML进行建模并运用MDA方法生成系统代码已成为当前工作流系统设计开发的一大发展趋势。经过多年发展的ECO技术为.Net环境下运用MDA方法开发基于UML的稳定高效的软件系统提供了很好支持,而ECOⅢ则通过支持UML动态建模,使得ECO具备了开发基于UML工作流系统的能力。通过示例介绍了运用ECO进行工作流开发的一般流程,着重展现运用ECO开发工作流系统的可行性和高效性。     

面向WWW业务的移动台状态转移算法研究

文章以下一代移动通信系统中的 WWW 业务为应用场景,提出了一种动态控制移动台状态转移行为的算法。算法的目的是有效地均衡 WWW 会话过程中的控制开销和信令连接占用效率两方面性能。文章采用Pareto 分布建立 WWW 业务模型。算法同时考虑了状态转移和移动性管理对总的控制开销的影响。仿真结果表明,该算法对信令连接重建概率和信令连接占用效率两方面性能提供了良好的平衡机制,并使控制开销总量维持在较低水平。     

The ligaments of counter-terrorism regime: sexual violence and the vicarious traumatisation of female non-governmental organisation workers: evidence from Nigeria

ABSTRACT

There is a dearth of studies on indirect victims of sexual violence in counter-terrorism efforts. Using Nigeria as a case study, this paper argues that global and state-level counter-terrorism policies have generally failed to account for the psychological effects of the engagement of female NGO workers in counter-terrorism operations or mitigating the effects of terrorism in conflict zones. Specifically, there has been an increase in sexual violence perpetrated by some members of the security agencies involved in counter-terrorism operations in North-eastern Nigeria. As a result, female NGO workers carry out Medicare, psychosocial counselling and advocacy for these victims. Female NGO workers become exposed to the trauma of victims of sexual violence, which affects their mental health and thus performances in counter-terrorism activities in the country. This altered their worldview on issues of safety even among secured locations or among the presence of security agents and reinforced feelings of powerlessness.     

US grand strategy and the origins of the developmental state

ABSTRACT

Scholars have credited a model of state-led capitalism called the ‘developmental state’ with producing the economic miracles of Japan, South Korea, and Taiwan. This article examines how the developmental state was shaped by the Cold War. US grand strategy focused on accelerating economic development among allies that were under the greatest threat from Communist China and North Korea. American aid agencies became involved in the process of state-building in Japan, South Korea, and Taiwan and supported economic planning. I verify this claim by contrasting US policies on Taiwan with US policies in the Philippines, which faced a weaker Communist threat.