人群控制战术

人群控制战术是公安民警对参加大型活动的群众进行管理、控制的方法。大部分的群众活动是和平进行的,但由于现场环境或一些突发事件可能会引起群众的情绪变化,现场气氛也许会急剧转变,而这些情况是警方改变管制策略的主要因素,甚至会因此考虑把人群管理改为人群控制。文章介绍了人群控制的策略、技巧和搬离示威者的方法,以供同行们参考。

患者人群数据质量控制方法

基于风险管理的质量控制计划要求临床实验室能结合不同类型的质量控制来监测不同的失效模式或不同的误差来源。而基于患者结果的质量控制程序可以改进整体误差检出能力并最终减少昂贵的质量控制材料的使用。文章介绍了患者人群数据质量控制的相关内容,可为临床实验室提供参考,帮助临床实验室利用患者人群数据质量控制获取更加准确、可靠的结果,为临床提供更加优质的服务。

考虑室内呼吸暴露风险的人群引流控制策略研究

为明确重大疫情中人群引流控制策略对室内呼吸暴露风险的影响,基于改进的行人动力学模型和呼吸传染概率模型,构建一般室内情况下人群运动多种场景,借助多智能体仿真技术,模拟防护优化策略、流量优化策略和路线优化策略对呼吸暴露风险影响。研究结果表明:室内呼吸暴露风险主要取决于行人总流量、个体停留时间、运动路径规划和污染区域持续时间;在行人社交距离遵循行为方面,个体因必须保持设定的物理距离而形成延滞效应,这会进一步增加暴露于污染区域时间;口罩病原体渗透率越低、空间通风量越大,群体呼吸传染概率越小。

浅析博物馆空间中的人群行为控制——展览中的“一米线”

“一米线”是博物馆运营过程中最为常见的现代工业设计产品。博物馆是否设置、如何设置“一米线”,既影响博物馆的展览效果和观众的观展体验,也涉及博物馆的观众需求、观众注意、观众态度、观众行为等一系列观众心理与行为的问题研究。“一米线”在博物馆的文物展示空间、互动教育空间、公共服务空间中,其功能与效果各有利弊。从人群行为控制理论观点出发,博物馆应兼顾展览效果与观众感受,利用视觉设计解决观众视觉引导的问题,在展示空间中利用群体结构控制,合理设计“一米线”及其使用形式,从而实现观众群体需求和使用感受的有机结合。

随身警卫的徒步警卫战术

随身警卫是保卫警卫对象安全的最后一道防线,警卫队形的基本类型及其变化应用,是确保要人正常活动的安全和在遇到突发情况时,能快速作出反应的最为有效的措施.因此,在警卫的实际工作中,这种近距离警卫要人的警卫战术的研究,已成为各国警卫部门保护要人的一项重要课题.

IMPROVED PARTICLE SWARM OPTIMIZATION ALGORITHM FOR INTELLIGENTLY SETTING UAV ATTITUDE CONTROLLER PARAMETERS

An improved particle swarm optimization （PSO） algorithm is investigated in the optimization of the attitude controller parameters of unmanned aerial vehicle （UAV）. Considering the stagnation phenomenon in the later phase of the basic PSO algorithm caused by the diversity scarcity of particles, a modified PSO algorithm is presented. For the basic PSO algorithm, the velocity of each particle is adjusted according to the inertia motion, the swarm previous best position and its own previous best position. However, in the improved PSO algorithm, each particle only learns from another randomly selected particle with higher performance, besides keeping the inertia motion. The inertia weight of the improved PSO algorithm is a random number. The modification decreases the uncertain parameters of the algorithm, simplifies the learning mechanism of the particle, and enhances the diversity of the swarm. Furthermore, a UAV attitude control system is built, and the improved PSO algorithm is applied in the optimized tuning of four controller parameters. Simulation results show that the improved PSO algorithm has stronger global searching ability than the common PSO algorithms, and obtains better UAV attitude control parameters.

群体性突发事件的安全处置战术

本文对群体性突发事件的人群控制行动现场处置战术进行了初步的讨论和研究,试图为群体性突发事件的人群控制、现场处置提供一些值得借鉴的战术行动方法。

SEXUALLY TRANSMITTED DISEASE CONTROL IN CHINA(1949—1994)

This paper surnmarizes the historical experiences in venereal disease control in China during the 1950s.Venereal diseases had been all but eliminated in the whole country till 1964. However, along with the implementation of open-door policy and economic reform in the 1980s, the social environment was changed to a great extent in this country. Sexually transmitted diseases (STDs) were reintreduced in the Chinese mainland and new foci of infection established themselves in some cities. During the recent 8 years the national STD case-reporting and sentinel surveillance systems have been set up. The results of surveillance show that the annual incidence of STD has been on the increase. The existing factors associated with the increasing incidence of STD mainly are ; population movement , increasing affiuence in a part of population,the availability of multiple sexual partners (including the prostitution)and asymptomatic STD increased.Finally, the strategies for STD control are discussed in detail.

Improved S Surface Controller and Semi-physical Simulation for AUV

S surface controllers have been proven to provide effective motion control for an autonomous underwater vehicle (AUV).However, it is difficult to adjust their control parameters manually.Choosing the optimum parameters for the controller of a particular AUV is a significant challenge.To automate the process, a modified particle swarm optimization (MPSO) algorithm was proposed.It was based on immune theory, and used a nonlinear regression strategy for inertia weight to optimize AUV control parameters.A semi-physical simulation system for the AUV was developed as a platform to verify the proposed control method, and its structure was considered.The simulation results indicated that the semi-physical simulation platform was helpful, the optimization algorithm has good local and global searching abilities, and the method can be reliably used for an AUV.

Flocking behavior with multiple leaders and global trajectory

Aiming at the group of autonomous agents consisting of multiple leader agents and multiple follower ones,a flocking behavior method with multiple leaders and a global trajectory was proposed.In this flocking method,the group leaders can attain the information of the global trajectory,while each follower can communicate with its neighbors and corresponding leader but does not have global knowledge.Being to a distributed control method,the proposed method firstly sets a movable imaginary point on the global trajectory to ensure that the center and average velocity of the leader agents satisfy the constraints of the global trajectory.Secondly,a two-stage strategy was proposed to make the whole group satisfy the constraints of the global trajectory.Moreover,the distance between the center of the group and the desired trajectory was analyzed in detail according to the number ratio of the followers to the leaders.In this way,on one hand,the agents of the group emerge a basic flocking behavior; on the other hand,the center of the group satisfies the constraints of global trajectory.Simulation results demonstrate the effectiveness of the proposed method.

TRIZ原则在密集人群管理中的应用

在音乐会、体育场或朝圣地这类场所,有时会发生威胁生命安全的过度拥挤现象。因此,保证人群在这些地方的安全变得十分重要。提高建筑物的质量,优化建筑物结构,一直是安全工作的重要关注点。但过去的大多数工作都聚焦于使用新的设备和方法对人群进行监测和管理,很少关注一个能够全面提高效率和安全性的结构化方法。在本文中,我们将探讨俄罗斯人提出的'Theory of Inventive Problem Solving'(发明问题的解决理论),即TRIZ理论,'看看它是否可以帮助我们改善或解决过度拥挤问题。具体来说,我们要找出人群管理中出现的矛盾,并研究TRIZ提供的哪一种解决方案可能对我们的问题有用。密集人群管理的常见矛盾之一,是越来越多的人流集聚在相对狭小的地方,导致过度拥挤。选择TRIZ理论提供的建议是解决这一矛盾的一种好方法。

Controllable macrocyclic supramolecular assemblies in aqueous solution

A series of macrocycles, including crown ethers, cyclodextrins, calixarenes, pillararenes and cucurbiturils, are well known to be able to associate various organic/inorganic/biological guest molecules and ions in their well-defined cyclic cavities to form stable host-guest complexes and supramolecular systems through the cooperative contributions of various non-covalent interactions.When one or more functional groups are attached to the cavity of macrocycles or guest molecules, enhanced and/or controlled host-guest associations may take place, leading to not only improved host-guest binding abilities but also fascinating properties.In this review, some representative contributions in the construction of controllable macrocyclic supramolecular assemblies in aqueous solution are presented with an emphasis on the stimuli-responsive control manner and wide applications of this property.

Fracture of the humerus caused by a slingshot projectile

Unconventional and ＇non-lethal＇ weapons are being used in crowd control regularly nowadays. The use of these arms is not risk-free. The paramilitary forces in 2010 used the old fashioned slingshots for crowd control in Kashmir. A young male suffered from a fracture of the distal humerus due to a marble from a slingshot. He was managed by debridement and plaster splintage. Use of apparently innocuous weapons for crowd control is not without risk, as the projectiles fired from them can achieve high velocities and cause significant damage.