电场引信的动作判据分析

讨论了海洋船舶交变电场衰减的基本特征.根据海洋对不同频率电场信号的穿透深度不一样的原理,分析推导了电场引信点火动作的判决依据.引信设计时选择不同的频率信号进行处理,使用电场模量门限、电场上升斜率、不同频率电场上升斜率比及其组合等参数可以简便地控制电场引信,使电场引信具有良好的动作区域性.     

Contrasting the Impacts of Combat and Humanitarian Assistance/Disaster Relief Missions on the Mental Health of Military Service Members

Abstract

We study the differential impacts of combat and humanitarian assistance/disaster relief (HA/DR) missions on the mental health of U.S. Marine Corps members. The deployment experiences of any individual Marine are plausibly random conditional on the observable characteristics which are used to assign Marines into units. Leveraging this exogenous variation, we compare the incidence of post-traumatic stress disorder (PTSD) and suicide deaths among Marines who deployed to either Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) or HA/DR missions between 2001 and 2011. We find that the hazard of PTSD is close to eight times higher among Marines returning from OEF/OIF compared to those never deployed, and just 1.33 times higher among those returning from HA/DR (and never participated in OEF/OIF). Those returning from OEF/OIF missions are 1.81 times more likely than those never deployed to die by suicide when they were still active duty, and the hazard increases to almost 3 after they have left the military. In contrast, we find no difference in the hazards of suicide death between those that deployed to only HA/DR missions and non-deployed Marines.     

基于pLSA模型的人体动作识别

提出一种基于主题模型的人体动作识别方法。该方法首先提取时空兴趣点(STIP,space-time interest point)来描述人体运动,然后提出使用慢特征分析(SFA, slow feature analysis)算法计算兴趣点梯度信息不变量最优解,最后使用概率潜在语义分析 (pLSA, probabilistic Latent Semantic Analysis) 模型识别人体动作。SFA计算的梯度不变量最优解可以表示时空兴趣点固有特征,能够无歧义反映时空兴趣点在空间及时间方向上的信息。同时,针对pLSA隐性主题正确性无法保证的缺点,算法将主题与动作标签“一对一”相关,通过监督方式得到主题,保证了训练中主题的正确性。该算法在KTH人体运动数据库和Weizmann人体动作数据库进行了训练与测试,动作识别结果正确率分别在91.50%和97%以上。     

BEYOND DECLARATIONS OF INTENT

This essay explores the obligations arising from the United Nations Convention against Transnational Organised Crime, signed in Palermo, Italy at the end of 2000. It also discusses the initiatives required to prepare the legal system and related infrastructure of Zimbabwe for its implementation. Zimbabwe joined more than 120 other countries in signing the Palermo convention, but has not yet ratified it. The ratification would enshrine the latest initiatives to develop effective strategies against transnational organised crime. The Palermo convention makes demands on the laws and institutions of states parties which could enhance their capacity to confront organised crime. Ratification signifies competence to implement the prescribed obligations, which can only occur after introducing suitable domestic laws, and adopting the necessary administrative mechanisms. The required reforms are bound to have certain policy and legislative implications for Zimbabwe. Regional initiatives complementary to the Palermo convention are expected to catalyse positive changes in Zimbabwe's response mechanisms.     

论王阳明知行合一说及现代意义

王阳明的知行合一说在道德认识与道德实践领域具有适应各个时代的精神内涵。王阳明通过对"知行合一"的论证,凸显了关于道德认识与道德行为的有价值的认识。这一文化底蕴对于形成中华民族精神和民族性格以及今天的精神文明建设都有着重要的作用和借鉴意义。     

面向任务的战术行动自主协同关系模型

在信息化战争的大背景下,战术行动中团队协同作战一直是研究的重点问题,而如何建立自主协同关系是团队协同研究的一个难点问题。在分析已有团队协同理论和框架的基础上,提出一种面向任务的战术行动自主协同关系模型建立方法。该模型首先根据当前战场态势和上级任务发布自主协同任务集合,各作战单元根据战场态势和自主决策自愿参与自主协同任务,其次利用作战单元与自主协同任务间的相互关系实现对关键角色的判断。如果关键协同成员参与自主协同任务则自主协同关系建立成功,反之,建立失败。     

计划中的时序偏好表示和非单调推理

针对行动序列计划中的时序偏好问题开展研究,重点关注时序偏好集合内部存在不一致性时完成行动计划的方法。论文的难点和创新点体现在两个方面。针对时序偏好的表示问题,建立了一种二元描述结构,能够实现对时序约束和时序偏好的归一化描述。使用计算辩论技术建立推理框架,用以排除约束/偏好集合中的冲突关系,获得具有最大一致性的约束/偏好子集。在此基础上建立了一种新的计划生成策略,通过映射的方法得到行动序列片段,组合这些片段后形成完整的行动序列计划。通过实例验证了方法的可行性。     

基于系统动力学的部队穿插迂回行动决策

围绕部队穿插迂回行动的两个目标,依据穿插迂回行动过程所具有的多阶段性特征,建立了部队穿插迂回作战行动决策的系统动力学模型,该模型充分考虑了信息化条件下指挥控制、通信网络、后装保障等因素对部队穿插迂回行动的影响,较好地克服了传统建模方法的不足.利用此模型,对某坦克营穿插迂回行动进行了仿真,分析了多种情况下穿插迂回时机和穿插迂回攻击目标的方案选择,为部队穿插迂回行动的正确决策提供了定量依据,说明了该模型的有效性.     

撤离火场前检查火场5C标准的设计与实践

目前,在国内未出台对公安消防队撤离火场前检查火场内容和具体方法的相关规定,且全国已出现多例不规范撤离火场现场导致消防队被拆的案例的情况下,笔者结合相关法规和实践,设计了撤离火场前检查火场的＂5C＂标准。该标准对于指导和规范消防队灭火行动具有一定的作用。