Insulating safety analysis of the hot-line sweeping robot

This paper presents a method of calculating the insulating safety distances for hot-line working robots at high voltage when dielectric is adulterated with conducts. Also, finite element method is adopted to calculate the electric field strength to find whether it is beyond the critical. The above methods have been applied to analyze the insulating safety of the robot for hot-line sweeping post insulators in a 220 KV substation. They have also been testified by experimentations.     

亟待理顺我国的煤炭安全生产管理体制

我国煤炭生产安全形势严峻,需要政府加强安全生产管理。多重机构的管理模式是否就是加强了安全管理值得探讨。从调研中发现,现行分散的行业管理体制结构分解了煤矿的安全生产责任,鉴于煤矿安全生产的技术性很强,精简管理机构、强化职能责任是煤矿安全管理改革的目标,重视管理科学的实践应用,理顺煤炭生产安全管理体制迫在眉睫。     

Establishing a System for Food Recalls to Protect Food Quality and Safety in China

There are no explicit laws concerning food recalls in China; moreover, some related regulations have weaknesses. China should first create a system of laws and regulations governing food recalls, establish a system to recall defective food, and strengthen administrative and legal remedial mechanisms related to consumer rights.     

改进的BP神经网络在大坝安全监控中的应用

针对经典BP神经网络运行中存在的缺陷，提出了改进的BP神经网络，不仅解决了经典BP网络易陷入局部最小的弊端，而且应用的0.618分割选取法能使网络快速找到较优隐含层节点数，初始权值的自相关修正进一步提高了网络的稳定性。实际应用证明，改进的BP神经网络有效提高了网络质量，适合大型网络的构建与训练。     

樊口大闸加固工程中的爆破振动分析

在考闸墩上爆破开挖出新的闸门槽，在新浇混凝土附近进行底板爆破开挖，爆破振动对闸墩和新浇混凝土的影响值得重视；介绍了在樊口大闸加固工程中的爆破振动观测成果，并对爆破振动特性进行了分析。     

Assessment of factors considered to be important in handling tasks by expert handlers

Twenty-eight experienced handlers, considered the best in two transport companies, were interviewed using a questionnaire consisting of partially closed-ended questions. They had to assess 20 videotape handling sequences showing two different handling methods to determine, for 10 factors and overall, which one was the best. They were asked about the inportance of these factors in their choices of the best method. The aims of the study were to verify whether there was a consensus among experienced handlers as to what was a good handling method and to identify the factors taken into consideration by them. Results show the lack of consensus on the best methods. Handlers favor different strategies depending on the worjk context and their own priorities.     

隆德县大水沟饮水工程建设与管理措施分析

隆德县在大水沟农村饮水工程建设管理中，科学规划，优化设计方案，完善政策措施，创新管理体制和运行机制，尤其是用水户全过程参与工程建设管理、实行“两部制”水价、实施工程定期检查养护制度、建立工程管理单位目标责任考核制度、执行水费统一管理和提留统筹费等一系列做法．确保了国家投资效益的充分发挥和工程的可持续利用．     

企业网络安全系统构建的探讨

企业信息化水平提高后，随着Internet的接入，企业网络的安全状况发生了很大变化。网络信息的安全问题也日益突出。本文由技术安全、安全管理等两方面具体措施的实施，说明了企业网络安全系统的构建方法。希望与各位同行共享和探讨。     

考虑渗流力的基坑涌砂分析

本文根据基坑防渗帷幕周围的地下水渗流特征，分析了渗流力对基坑流砂的影响，提出了按涌砂安全系数进行防渗帷幕埋入深度计算的方法。