浅谈电气节能在建筑工程中的运用

本文通过介绍电气节能设计应遵循的原则,着重阐述了建筑电气节能设计中线路损耗、变压器的选择、照明节能、电动机节能、空调系统节能、给排水节能等多个方面的节能技术措施,以及在建筑工程中的应用。     

大跨度钢管混凝土拱桥徐变性能研究

基于有效弹性模量法,文章建立了有限元模型,计算分析了大跨度钢管混凝土拱桥徐变对结构位移、内力重分布以及动力特性的影响。     

Employee involvement and participation: developing the concept of institutional embeddedness using WERS2004

It is widely accepted that employee involvement and participation (EIP) is a key component of the high commitment bundle of HRM, but that it can take a range of forms in practice. Much of the analysis to date has either treated different forms of EIP as a single construct or has measured EIP by virtue of its presence or absence alone. Drawing on earlier work based on the data from WERS1998 examining the link between various forms of EIP and employee outcomes such as job satisfaction and organisational commitment, the authors re-apply and extend these ideas to data from WERS2004. In particular they develop the concept of institutional embeddedness, in order argue that both the depth and breadth of EIP have important associations with commitment though not with satisfaction.

This association held for workplaces employing 25 or more workers, and here it was apparent that the more that employees are involved at workplace level – through a wider number of EIP practices that are held more frequently and include opportunities for workers to have their say – the more likely it is that investments in EIP will reap the reward of organisational commitment. For smaller establishments, given that they tend to operate with relatively few formal schemes, it is likely that managers in these workplaces find alternative ways in which to engage the workforce, and that informal EIP offer similar levels of embeddedness in these situations. A clear implication to be drawn from the findings is that, in a context of lower levels of formality within organisations (large and small), line managers are more than ever the key link between HR policy and the embodiment of actual practice at the workplace.     

一种基于Edline线特征的车道线识别算法

为了提升车道线检测的准确性和实时性,改良车道偏离预警系统的性能,提出了一种新的车道线识别算法。首先应用投影法对采集到的图像设立感兴趣区域,以此来减少图像中存在的干扰信息;其次应用一种改进后的自适应高斯滤波算法对采集所得图像进行平滑处理,减少图像中不必要的细节;最后采用边缘绘制算法进行边缘检测,在此基础上,提出一种线段检测算法——Edline算法提取边缘线,对检测到的直线段进行筛选和聚类。利用引用计数法对车道线进行跟踪和预测。结果表明,新算法的平均处理时间为17.1 ms,准确率为96.19%,将其应用在车道偏离预警系统中可以有效地提高预警效率,提升预警的准确性和响应速度。研究结果丰富了车道线识别理论,可为车道偏离预警系统的应用及基础研究提供参考。     

岩溶发育地区铁塔基础设计和施工的探讨

文章对高压架空输电线路基础在岩溶发育地区的优化设计进行了概述,以广西区内某220kV送电线路工程基础处理为实例,对在岩溶较发育的石灰岩地区进行铁塔基础设计和施工中需注意的问题进行探讨与分析。     

缅甸瑞丽江一级水电站至达贡山镍矿输电线路拼抢工期的若干措施

文章阐述了缅甸瑞丽江一级水电站至达贡山镍矿220 kV送电线路工程拼抢工期的若干措施,尤其指出大件材料在雨季前运输到现场材料站、将组织不力的施工分包商断然换下、对雨季材料中运的路面进行处理等措施的施行,能使工程满足合同对工期的要求。实践表明,这些非常措施对赢得工程工期是行之有效的。     

10kV配电线路接地故障原因及有效预防措施

配电线路是电网的基础设施,其故障发生频率较高并且涉及的原因也比较广泛。文章主要介绍了10 kV配电线路中单相接地的故障类型及发生原因,并阐述了一定的预防措施和处理方法以及新技术和新设备在该方面的应用。     

配电网的理论线损分析

文章以南京某地区配电网实际线损为例进行分析,结果表明只有降低理论损耗,实际线损才会有明显下降。     

基于Zigbee技术的高压开关触点温度在线监测技术

高压开关柜是电力系统中极为重要的组成结构,对于电力系统的运行起到了通断、控制、保护的作用,避免了系统受到各种故障的影响而出现损坏。为了保持高压开关柜性能的发挥,对其触点温度实施监测控制可及时观察到可能发生的故障,采取措施后把故障损失控制在最小。文章分析了ZigBee技术在高压开关柜触点温度监测中的运用。