Wind-drag estimation in a traffic accident involving a motor scooter and a tractor-trailer

This case report describes a noncontact traffic accident involving a motor scooter and a tractor-trailer with a focus on the wind-drag effect. We used load cells to measure the drag force acting on a substantially similar motor scooter when a substantially similar tractor-trailer passes by it, taking into consideration various speeds of the tractor-trailer and distances between the two vehicles. A three-dimensional steady-state flow analysis was also performed by using the CFX program for computational fluid dynamics to examine the streamlines and the pressure distribution around the tractor-trailer at various speeds. From the experiment, for a separation distance of 1.0 m (3.28 ft) and a speed of 90 km/h (55.9 mph), the maximum resultant drag force is 124.5 N (28 lb); this constitutes a degree of force that could abruptly disrupt the stability in maneuvering by an operator who is unaware of the approaching tractor-trailer. In addition, a single equation that relates the tractor-trailer speed to the drag force that acts on the motor scooter was derived on the basis of the Reynolds number (Re) and the wind-drag coefficient (C(d)): C(d) = 1.298 × 10(-7) Re.     

A walk in to the cloud and cloudy it remains: The challenges and prospects of ‘processing’ and ‘transferring’ personal data

Cloud computing is an information technology technique that promises greater efficiency and reduced-cost to consumers, businesses and public institutions. However, to the extent it has brought better efficiency and minimal cost, the emergence of cloud computing has posed a significant regulatory challenge on the application of data protection rules particularly on the regime regulating cross-border data flow. The Data Protection Directive (DPD), which dates back to 1995, is at odds with some of the basic technological and business-related features of the cloud. As a result, it is claimed that the Directive hardly offers any help in using the legal bases to ‘process’ and ‘transfer’ data as well as to determine when a transfer to a third country occurs in cloud computing. Despite such assertions, the paper argues that the ECJ's Bodil Lindqvist decision can to a certain extent help to delineate circumstances where transfer should and should not occur in the cloud. Concomitantly, the paper demonstrates that controllers can still make the most of the available possibilities in justifying their ‘processing’ as well as ‘transferring’ of data to a third country in cloud arrangements. In doing so, the paper also portrays the challenges that arise down the road. All legal perspectives are largely drawn from EU level though examples are given from member states and other jurisdictions when relevant.     

Proposal for internet-based Digital Dental Chart for personal dental identification in forensics

A dental chart is very useful as a standard source of evidence in the personal identification of bodies. However, the kind of dental chart available will often vary as a number of types of odontogram have been developed where the visual representation of dental conditions has relied on hand-drawn representation. We propose the Digital Dental Chart (DDC) as a new style of dental chart, especially for open investigations aimed at establishing the identity of unknown bodies. Each DDC is constructed using actual oral digital images and dental data, and is easy to upload onto an Internet website. The DDC is a more useful forensic resource than the standard types of dental chart in current use as it has several advantages, among which are its ability to carry a large volume of information and reproduce dental conditions clearly and in detail on a cost-effective basis.     

人才分布及其流动的公共部门化现象探析——以云南省为个案的实证研究

本文是以云南省为个案,对人才分布及其流动的公共部门化现象的实证研究。人才作为第一资源,在市场经济条件下的配置,首要和主要的,应是面向经济、走向市场,进入经济实体。但目前我国情况并非如此,尤其是在欠发达地区,人才分布和流动的公共部门化是一种普遍的现象。这种现象如果不能有效改变,将对我国的经济发展与市场经济体制的巩固产生重大的消极影响。     

礼物流动模式的反向——评《礼物的流动》

《礼物的流动》的作者通过生动的社会生活交往,分析了黑龙江下岬村礼物交换原则、模式及其所反映出来的社会关系网络运行方式,发现单向送礼会导致受礼者权力和声望增加,这与以往绝大多数人类学家研究结果正好相反,可谓是礼物流动模式的反向。这对中国人类学研究具有非常重要的意义,填补了中国的礼物与乡村人际关系研究的空白。     

Assessing China's Cybersecurity Law

In November 2016, China passed its first Cybersecurity Law, aiming to strengthen cyberspace governance through a number of initiatives, including Internet operator security protection, personal information protection, special protection of critical information infrastructure, local storage of data, and security evaluation for data export. This Article discusses the major concepts and principles of the Cybersecurity Law. It also discusses the tensions and controversies inherent in the law. All in all, the Cybersecurity Law exhibits distinctive Chinese characteristics. It is premised on the concept of cyberspace sovereignty and emphasizes security over free flow of data and freedom of speech. It provides a basic legal framework for cyberspace governance in China, to be supplemented by implementing regulations in years to come.     

浅谈路由基础结构免遭拒绝服务

当网络遭受拒绝服务时，信息包不能达到目的地，已有的邮件路由协议不能很好地解决拒绝服务问题。作者在文中提出了路由基础结构拒绝服务的模型，并描述了用入侵检测保护路由基础结构免遭拒绝服务的方法。     

平交路口左转交通流的组织与管理

如何合理组织与控制路口的左转弯交通流,是平交路口交通秩序管理及提高路口通行能力的核心问题。可以通过连续向右绕行,远引交叉等措施实现左转。同时这种路口禁止左转弯的交通管制要与路网布局匹配,尽可能不给车辆的行驶造成太大的不便。在条件允许的地方,仍需通过合理渠化设置左转专用车道和相位。     

"智慧景区"背景下交通组织管理方式探究

"智慧景区"已经成为我国旅游业发展的新趋势,利用大数据可对景区运行状态进行整体把控,系统性地诊断景区管理问题成因,及时监测和发现景区问题区域,提出景区游览管理措施和方案。就景区外部而言,利用大数据可分析游客在景区外部游览路线趋势。在此基础上,组织者可通过对周边道路采取交通管控措施,实现对游客进出景区的合理诱导,缓解景区进出口通道的交通拥堵。就景区内部而言,利用大数据可分析各景点人流聚集与移动情况。同时,组织者可采取"容量限制"和"流向调控"等有效管理措施,实现对人流游览路径的调控,对游客进行科学的疏导和分流,提升景区管理服务水平。     

大陆仍然是台商对外投资的首选之地

台湾岛内有的媒体认为台商在大陆投资被边缘化了。这是不符合事实的。本文以大量的实际资料说明,台商在大陆投资始终为大陆所欢迎和重视。因而其投资趋势不但未缩小,还在扩大,技术也在升级。这是符合资本流动规律的,也是一种不可逆转的趋势。