基于因特网的危险废物转移联单系统研究与开发

危险废物转移联单是跟踪危险废物转移和处理处置的基本方法 ,也是实施危险废物全过程管理的有效工具。然而 ,目前使用的纸质联单系统 ,运行过程繁杂、周期长、耗费人力和物力 ,与现代化管理不相适应。本文提出了符合中国国情的电子化转移联单解决方案 ,论述了系统的设计开发过程和运行情况。这一系统采用了因特网技术 ,能实现联单运行的电子化和自动化 ,简化运行过程 ,提高效率 ,为我国危险废物转移的电子化管理奠定了基础     

信息电子装备高可靠性设计方法思考

信息战已迅速成为现代战争的主角,拥有先进智能的信息系统,即可取得战场主动权和赢得作战制高点。性能先进和稳定可靠的信息装备,将成为推动其发展的原动力。我国传统信息装备面临可靠性低、体积质量大、功耗高等问题,制约着其作战效能的发挥,而尤其对于未来空天一体、网络一体的信息作战,这些问题将更加突出。提出了信息装备综合化、集成化的设计思路,以期达到提高装备可靠性,满足未来战争对信息电子装备高可靠性的需求。     

可靠性仿真试验在机载电子产品上的应用

可靠性仿真试验技术作为可靠性设计重要工作之一,因其周期短,经费少,效果明显,现在被广泛应用在产品研发过程中.主要研究了可靠性仿真试验技术在机载电子产品上的应用,通过简要介绍可靠性仿真试验原理、基本流程、试验方法、试验对象选取原则等,并结合实际工程应用,证明了该技术对于机载电子产品早期研发过程设计质量提升具有积极推动作用.相比于传统的实物参与的可靠性试验主要解决后端暴露的问题,该技术面向设计前端,通过可靠性仿真试验技术得出的机载电子产品可靠性评估结果,可以使机载电子产品在方案阶段或下图制造前存在的薄弱环节和潜在故障,得到提前释放,同步优化设计,切实提升产品可靠性水平.同时,该技术也可以满足现阶段机载电子产品研制进度紧,资源有限的研制需求.     

电子吊舱温度环境测试分析

目的 为电子吊舱热管理系统设计提供实测数据支撑.方法 在电子吊舱内部不同位置部署高精度温度传感器,并配套具有统一时标的参数采集设备,采集不同季节、不同飞行工况下电子吊舱内部的温度数据,获取舱内温度环境参数.结果 当飞行工况稳定时,电子吊舱内部环境温度的稳定时间约为1200 s,稳定值与当地大气总温的差别小于3℃.在不同飞行工况下稳定飞行时,舱内温度高于当地大气静温.以高空(11 km)飞行工况为例,当地大气静温为?50～?60℃,由于舱体蒙皮受气动加热影响,舱内环境温度仍维持在?40℃以上.结论 飞行工况不同,吊舱内部环境温度有显著差别,随飞行工况变化,吊舱内部环境温度的变化相对滞后,其响应速度与材料导热能力正相关.     

预浓缩/柱箱制冷GCMS/FID法测定大气中117种挥发性有机物

建立了罐采样、吸附剂辅助电子制冷预浓缩-柱箱制冷GCMS/FID同时测定大气中117种挥发性有机物(VOCs)的方法.样品经填充吸附剂的电子制冷预浓缩系统除水、除CO2、浓缩和热脱附后,采用柱箱制冷及GCMS/FID的多维切割单元,将5种C2-C3组分切到二维色谱柱进行分离并进入FID检测,甲醛及其他111种VOCs组...     

南昌电厂210m烟囱定向爆破拆除安全技术

介绍了210 m高钢筋混凝土烟囱定向控制爆破拆除的成功经验,着重介绍了电子数码雷管起爆网络和爆破安全技术,提出了防飞石、防飞溅、减振、降尘综合防护方法。     

Crash risk of ESC-fitted passenger cars

Objective: We examined both fatal and injury at-fault crashes of a population of passenger cars fitted with electronic stability control (ESC). Crash rates were calculated in relation to both registration years and mileage. Crash rates were also calculated for a non-ESC car population and crash rate ratios were calculated to compare the crash risk between ESC-fitted and non-ESC-fitted passenger cars.

Methods: Passenger car models with and without ESC were identified (ESC-equipped cars: 3,352,813 registration years; non-ESC-equipped: 5,839,946 registration years) and their vehicle information for the period 2009–2013, including mileage (ESC-equipped vehicles: 89.3 billion kilometers; non-ESC-equipped: 72.4 billion kilometers), was drawn from the national Vehicular and Driver Data Register.

The registry of Finnish road accident investigation teams was accessed and all fatal at-fault crashes among the cars in the study populations (ESC 97; non-ESC 377) for the period 2009–2013 were analyzed. The motor insurance database includes at-fault crashes leading to injuries and was utilized for analyses (ESC: N?=?8,827, non-ESC: N?=?21,437).

Crash rates and crash rate ratios were calculated to evaluate crash risk of both ESC-equipped and non-ESC-equipped passenger cars. Poisson regression was used to model crash involvement rate ratios both per registration year and per mileage for vehicles with ESC and without ESC, controlling for age and gender of the vehicle owner and vehicle mass.

Results: Passenger cars fitted with ESC showed lower crash rates than non-ESC-equipped cars in all crash types studied. In general, the difference in crash rates between ESC-equipped and non-ESC-equipped vehicles was greater when the crashes were compared to the mileage rather than registration years. The mileage-proportional crash rate of ESC-equipped cars was 64% (95% confidence interval, 61%; 67%) lower in run-off-road crashes resulting in injury and as much as 82% (65%; 91%) lower in fatal run-off-road crashes when suicides and disease attacks were not taken into account.

Conclusions: Our results show that modern passenger cars provide a significant crash risk reduction, which depends on both ESC and passive safety features introduced. Results also show that exposure evaluation in terms of registration years (or vehicle population) instead of true mileage can provide an overly pessimistic view of the crash risk.     

废弃电器电子产品拆解信息管理系统研究

基于废弃电器电子产品拆解信息管理及政府管理部门监管的需求,研究并开发废弃电器电子产品拆解信息管理系统。系统针对企业现有生产工艺流程设计,分为7大功能模块,包括前台数据采集部分和后台数据管理部分。使用的开发工具有Sybase Power Builder 9.0,Microsoft Visual Studio 2010,建模工具有Power Designer 9.0,数据库SQL Server 2000。系统经过企业应用证明,能有效提高企业的信息化管理水平和生产效率,为主管部门提供有效监督工具。     

电子产品环境应力筛选的技术及实施办法

环境应力筛选作为装备研制、生产中的一个非常重要的环节,结合有关标准,对环境应力筛选的作用、方法、裁减、实施办法等方面进行了阐述和论述。通过本文,使企业能够了解环境应力筛选的重要性,将此项工作落实到产品的研制/生产过程中,提高产品的可靠性,从而达到提升企业效益。     

The development of WEEE management and effects of the fund policy for subsidizing WEEE treating in China

The consumption of electrical and electronic equipment is surging, so is the generation of waste electrical and electronic equipment (WEEE). Due to the large quantity, high potential risk and valuable capacity of WEEE, many countries are taking measures to regulate the management of WEEE. The environmental pollution and human health-harming problems caused by irregular treatment of WEEE in China make the government pay more and more attention to its management. This paper reviews the development of WEEE management in China, introduces the new policy which is established for WEEE recycling and especially analyzes the effectiveness of the policy, including huge recovery, formation of new recycling system, strict supervision to related enterprises, and the stimulation to public awareness. Based on the current achievement, some recommendations are given to optimize the WEEE management in China.