Personality, safety attitudes and risky driving behaviors—Evidence from young Taiwanese motorcyclists

This paper's main objective is to explore the relationships between personality factors, attitudes toward traffic safety and risky driving behaviors among young Taiwanese motorcyclists. A second objective is to examine the gender difference in the effects of personality and safety attitudes on risky driving behaviors. The study sample consisted of 257 student participants from a Taiwanese university. The results show attitudes toward traffic safety are directly associated with risky driving behaviors while having direct effects on attitudes toward traffic safety, personality traits are also found to influence risky driving behaviors indirectly mediated by traffic safety attitudes. Practical implications for traffic safety of young motorcyclists are also discussed.     

基于CAN网络的矿山安全检测系统的研究

基于CAN网络的矿山安全检测系统由环境采集器、CAN网关、控制终端以及监视计算机组成。该系统的环境采集器和CAN网关之间的距离可以长达10km,可以设置多达256个环境检测点,可以同时检测巷道的温度,风速、瓦斯浓度、一氧化碳浓度等环境参数。网络实现简便,可靠。系统编程采用软PLC设计思想,编程更加简单、方便,增加了可操作性并减少了推广难度。     

含水破碎带及断层临近矿体安全采矿技术研究

针对有破碎带及断层赋存并临近地下铁矿山矿体的开采,如果破碎带及断层中含水,随着开采的进行及空区的加大,含水破碎带及断层会产生变形、失稳及断裂破坏,给采场带来严重的冒顶、塌方或突然涌水等严重的灾害事故,对含水破碎带及断层临近矿体的开采进行研究,通过稳定性分析及模拟计算,研究制定了保证安全的采矿技术方案。     

地下矿山采场顶板厚度数值模拟研究

通过结构力学解析法对顶板沉降量的计算,估算出能维持顶板稳定的厚度取值范围,运用FLAC3D软件建立了开采环境再造采场数值模型,并对不同厚度顶板进行模拟计算,揭示了顶板厚度对采场稳定性、应力分布以及顶板沉降量的影响规律,表明了塑性区、应力扰动范围以及沉降量都随着顶板厚度的增加而减小,且减小的幅度趋缓。以顶板沉降量为判据,模拟结果得出,顶板厚度是6m时的最大沉降量为6.376cm,满足矿山安全要求;同时,兼顾顶板施工工艺、构筑成本和服务年限,得出顶板的最小安全厚度宜取6m。     

高耸建筑物拆除爆破安全监理实践

以西湖第一高楼定向爆破拆除安全监理为例,重点介绍了监理工作的主要内容和基本方法,并对拆除爆破安全监理存在的一些突出问题进行了探讨。作者还就此工程实例谈了监理工作的效果与体会,可供拆除爆破工程监理参考。     

综论爆破工程安全监理

从爆破工程特点的分析入手,介绍了拆除爆破、硐室爆破和中深孔爆破工程安全监理工作的基本方法和监理手段,对爆破安全监理组织的形式、原则和安全监理旁站点的选择、检查、记录等重要监理事项进行了论述。     

焦化厂十大储煤罐爆破拆除倒塌可靠性分析

介绍了济南焦化厂10个钢筋砼储煤罐爆破拆除方案设计中倒塌可靠性分析。为确保10个储煤罐顺利倒塌,在设计过程中,对每个罐体第3排立柱爆破切口形成后预留部分的受力进行了分析,对转动角度、重心偏移、后坐及爆破高度进行了校核。爆后实践证明爆破参数、炸高、延时间隔选取合理,所采取的安全防护措施得当,爆破效果与理论计算基本相吻合。     

大型空分设备冷凝蒸发器结构研究

对空分设备冷凝蒸发器进行了简单分类,着重分析和比较不同类型的浸浴式冷凝蒸发器的结构和性能特点。     

Response to “Commentary by Dr. Henryk Drulis”

One safety aspect of a material-based hydrogen storage system is the exposure of such system to a high-temperature environment (e.g., a fire) causing an increase in pressure. A simple analysis, based on a material balance, is provided to estimate the effect of temperature on equilibrium storage pressure in a material-based hydrogen storage system. Jiann C. Yang in Int J Hydrogen Energy 33 (2008) 4424–4426.     

Effects of the geometrical configuration of a ventilation system on leaking hydrogen dispersion and accumulation

Hydrogen dispersion and accumulation in a partially open space with natural and forced ventilation are computationally investigated in this paper. After validating the present numerical method and assessing grid width against experimental data of a hallway, the present method is applied to a garage with dimensions of 2.6 m × 2.6 m × 2.6 m and leak flow rates of 0.5–4 standard cubic feet per minute (SCFM). In the simulations, different combinations of roof vents and door vents are considered by changing their sizes and positions. Based on the results, differences in concentration increase, the processes of hydrogen dispersion and accumulation, unsteadiness and vortical structures accompanying ventilation, are shown for natural and forced ventilation.