变频技术在供热行业中的应用

针对供热系统落后的补水定压方式和锅炉鼓、引风系统，阐明变频调速技术在这２方面的应用以及取得良好的效益和远大的发展前景。     

U.S. and East Asian Integration

the U.S. is directly impacting on the future of the East Asian community. Therefore, finding ways to get along with the U.S. is crucial to the speed, direction, configuration and character of the East Asian community. In this paper, the author has analyzed the interests of the United States in East Asia and its stands towards the East Asian integration. The author concludes that it is to the interest of the United States to make more efforts to further join in the East Asian integration. And East Asia should accept and welcome the American participation.     

交通事故车速测算方法探析

本文较为系统地归纳分析了交通事故车辆行驶速度的一系列方法，主要是理论计算法、软件分析法、经验公式法、实验验证法、仪器读取法、监控信息测定法和人体特征损伤分析法等，为科学分析事故成因提供依据。     

从一起签名鉴定看中西方笔迹专家的不同理念

签名笔迹鉴定个案引发的中西方笔迹专家不同理念的碰撞,促使本文在中西文签名笔迹相比较的基础上,对中西方笔迹专家在签名鉴定方面的理念差异进行初步探讨。     

A typology of drivers' responses to speed cameras: Implications for speed limit enforcement and road safety

Abstract

Speeding is usually perceived as a minor crime but it is a major cause of road death. Reduced speeds should therefore lead to casualty reduction, and automatic speed cameras were introduced in England and Wales under the Road Traffic Act 1991 to help achieve this aim. A quasi-experimental study is described that assessed die impact of several kinds of speed camera deployment strategy in England on different types of driver. Twelve surveys were carried out in five police force areas, and more than 6800 drivels participated. While all modes of camera deployment led to lower speeds, driver types who ‘manipulated’ or ‘defied’ the cameras were least responsive to and respectful of than. Conversely, those who described themselves as ‘conforming’ to speed limits or ‘deterred’ by cameras approved of them most. Background characteristics of driver types, their perceptions of camera operation and behavioural responses to cameras arc discussed. The implications for speed limit enforcement and casualty reduction are considered in light of the findings.     

浅谈道路交通事故车速鉴定

在道路交通事故认定过程中，事故发生时车辆速度的鉴定是事故认定中需要的重要依据。事故车速的确认是形成事故过程证据链中必要的环节，也是为办案机构提供事故方驾驶员在控制车速方面是否存在违规行为的重要证据。因此，在进行车速鉴定时要根据事故的形态和采集的信息，结合实际选择合理的车速计算方法。这里系统地归纳分析了交通事故车辆行驶速度的理论计算方法以及监控信息测定法和人体特征损伤分析法。     

“飞车抢夺”行为定性探讨

飞车抢夺具有不同于传统抢劫、抢夺的特征,但在司法实践中往往将其定性为抢夺。为了严厉打击飞车抢夺,近年来,我国打击"飞车抢夺"的刑事法律政策,经历了从量刑从重到定性从重的演进,但还是不能有力打击"飞车抢夺"。针对与人身具有紧密连接的物品进行的"飞抢"完全符合"以其他方法抢劫"的主客观要件,应当认定为抢劫罪。     

中外道路交通限速管理的社会经济文化背景比较与分析

道路交通限速管理并非简单的工程技术问题,有着明显的社会经济文化背景和属性。对中外限速管理背景进行比较分析后认为:限速问题反映了社会经济文化背景与交通发展之间的现实关系;在以"经济建设为中心"的基本发展战略下,当交通安全和交通效率不能兼顾的时候,必须寻求交通效率和交通公平之间平衡关系的合理方法和途径,并以确保交通安全为前提;不论如何先进的速度控制技术和管理理论,都不能忽视中国现阶段特殊社会经济文化背景的影响。     

道路交通工程中的车速含义及其应用

在道路交通工程中,车速是一个重要的概念,它是描述交通行为的一个不可缺少的参数。文章对车速的含义、分类和应用进行了探讨,以利于交通管制措施的实施。     

The Anatomy of a Pipe Bomb Explosion: Measuring the Mass and Velocity Distributions of Container Fragments

Improvised explosive devices such as pipe bombs are prevalent due to the availability of materials and ease of construction. However, little is known about how these devices actually explode, as few attempts to characterize fragmentation patterns have been attempted. In this study, seven devices composed of various pipe materials (PVC, black steel, and galvanized steel) and two energetic fillers (Pyrodex and Alliant Red Dot) were initiated and the explosions captured using high‐speed videography. The video footage was used to calculate fragment velocities, which were represented as particle velocity vector maps. In addition, the fragments were weighed. The results demonstrate a correlation between the type of energetic filler and both the size and velocity of the fragments. Larger fragments were produced by Pyrodex filler indicating a less complete fragmentation, compared with smaller fragments produced by double‐base smokeless powder. Additionally, higher fragment velocities were seen with Alliant Red Dot filler.