群体性上访事件对警卫工作的影响及对策

在警卫工作中,群体性上访事件不仅威胁警卫对象、警卫目标、重要会议和重大活动的安全,而且处置不好还会损害党和国家的政治形象与国际形象。警卫工作中预防和处置群体性上访事件,首先要提高预警能力;其次要进行充分的处置准备,在具体处置时要注意运用正确的策略和方法,既要维护群众的根本利益,又要降低负面影响。     

试论消防产品与公共安全

消防产品是事关国家和人民群众生命财产安全的公共安全产品。目前,消防产品市场秩序混乱、产品质量良莠不齐、个别消防产品标准不一致、安全类产品不安全等问题突出。加强消防产品监督管理、培育完善市场和健全监管机制刻不容缓。     

高层民用建筑总平面设计图消防审核的若干问题探讨

结合部分消防车辆性能参数,对高层民用建筑消防车道、扑救场地的设定进行了一一探讨,并明确了原则,以期设计、建设、规划等单位,在确保节省用地,符合规范的前提下,满足灭火救援需要。     

扁平大空间建筑烟气填充规律研究

采用理论计算和计算机模拟相结合的方法,研究了使用两种不同方式计算得到的扁平大空间建筑火灾烟气温度分布的特征和规律,并采用了将扁平大尺度空间划分为多个不同形式子单元的形式,对不同空间划分情形下火灾烟气温度和烟气层厚度的变化规律进行了研究,从而得出了扁平大空间建筑火灾烟气温度和厚度分布的规律,为研究此类建筑的烟气填充规律提供了一定的方法和思路。     

米波雷达阵地条件选择的分析

米波雷达在实际使用中,阵地的条件会影响到其探测威力的发挥。阵地条件的选择涉及多方面因素,对有效反射区、地面起伏高度、反射面内地物对仰角的限制、遮蔽角的限制等几种影响雷达探测性能的主要因素进行了分析,探讨了阵地条件的选择方法,并给出了相应的数学模型。模型的建立为雷达实际使用提供了理论依据,并且在实际应用中得到了检验。     

考虑扰动引力影响的弹道助推段误差传播解析计算方法

针对地球扰动引力对弹道导弹惯性导航精度影响日益突出这一问题,研究了沿弹道扰动引力的多项式拟合方法,并基于线性系统理论和弹道摄动思想推导了用于求解扰动引力对弹道助推段状态影响的完整解析表达式。同时考虑扰动引力影响与导弹视加速度之间的耦合特性,将扰动引力引起的视加速度偏差视为扰动引力影响的附加补偿项,并进行迭代修正。仿真结果表明:扰动引力拟合残差小于3×10~(-7)m/s~2,考虑耦合项修正的弹道误差传播解析模型计算残差减小为原有方法的1/3,计算时间仅为直接采用弹道积分求差法的1/10。     

Hizbullah’s Shaping Lebanon Statehood

Abstract

Since the end of the civil war in 1990, the Lebanese second Republic has experienced a dual security governance in the southern borderland region. Up to the Syrian military withdrawal in 2005, the territorial and functional ‘areas of limited statehood’ between the State and Hizbullah worked as a cooperation. After the Syrian withdrawal, various forms of cooperation appeared, raising the theoretical interest for the ‘mediated state’ framework. It is conceptualizing the cooperation between the state and the non-state actor as an interdependency – with case study ranging from the marking of the Blue Line to the struggle against the jihadists groups.     

A Dangerous Method: How Mali Lost Control of the North,and Learned to Stop Worrying

Abstract

This article analyses changes and failures in the northern Mali system of security governance, taking into account the period running from the declaration of the Malian Third Republic (1992) to the present. Considering northern Mali as an area of limited statehood, the article develops a comparative diachronic analysis, distinguishing between three phases, namely Militiarisation (1992–2002), Fragmentation (2002–2012) and Multiplication (2013–ongoing). For every phase the focus is on (1) the mechanisms of coordination among actors, (2) the distribution of coercive capacities and ruling power and (3) the forms of authority. Unintended consequences and collective problems are highlighted, in order to understand the current situation of insecurity in the area.     

临近空间拦截弹最优弹道跟踪制导律

针对拦截临近空间高超声速飞行器的弹道跟踪过程,基于线性二次型调节器理论和高斯伪谱法设计一种跟踪制导律。为了对标称弹道进行精确跟踪,考虑线性二次型跟踪问题,应用最优控制理论推导最优解的充要条件,得到带时变增益的线性状态反馈控制量的表达式;基于高斯伪谱法,在离散的勒让德-高斯点上利用标称弹道数据计算差分矩阵和系数矩阵,求得状态扰动反馈控制律。仿真结果表明,与基于求解矩阵黎卡提方程的方法相比,该方法选取较少的节点即可获得高精度的反馈控制量,且运算效率大幅提高,满足在线实施要求。     

Recognizing Fragmented Authority: Towards a post-Westphalian Security Order in Iraq

Abstract

The rollback of Daesh’s territorial control during 2017 has (re-)established an area of limited statehood in large parts of Iraq that may endure for many years. The government of Iraq projects its authority into a large geographical and political space that it shares with a multitude of other state, non-state and hybrid actors, competing and collaborating to achieve advantageous security and political outcomes. This paper examines the heterarchy of actors in post-Daesh Iraq to develop a typology and start a critical discussion about post-Westphalian alternatives for security governance in Iraq during the coming period of reconstruction and reconciliation.