价值工程在商业企业选择代理"品牌"中的应用

运用价值工程原理,分析了商业企业选择代理"品牌"要考虑的若干因素,提出了一种优化商业企业选择代理"品牌"种类的价值分析方法,并用实例进行了验证.     

城市地下铁道隧道开挖控制

阐述了青岛地下铁道青纺医院车站在坚硬岩层中的施工要点，重点介绍了爆破控制、震动监测等内容，对于城市硬质岩石条件下的地下工程具有借鉴意义。     

既有线提速改造中S700K转辙设备调试方法研究

探讨在既有线提速改造施工过程中,对S700K转辙设备的调试方法,提高该型转辙设备的调试效率,有效缩短联锁试验时间.     

某四气门单体气缸盖顶板的改进设计研究

运用有限元法对某发动机四气门单体气缸盖顶板的承载机理及应力分布状态等进行分析研究。研究表明,随着螺栓预紧力的增加,气缸盖顶板的应力变化显著,预紧工况的应力值约占顶板整体应力值的75%～85%;随着爆发压力的增加,气缸盖顶板应力变化很小,因此动态载荷较小。根据应力分布状态分析结果对顶板进行结构改进了设计及分析,最后通过应力测量试验验证其准确性。     

公路测设中顾及系统误差影响的导线平差

对公路测设中距离存在的系统误差进行分析,提出了公路测设中顾及系统误差影响的导线平差方法,解决了平差计算精度不足的问题,满足了公路工程的测设要求.     

制造业中小企业信息系统的规划与设计

分析了东风汽车悬架弹簧有限公司的信息化建设现状,根据企业的发展现状、战略目标、核心业务、信息化技术应用现状等情况,给出了符合企业发展需求的信息技术支撑方案,并阐述了这一方案在同类型制造业中小型企业中的普遍意义。     

用组态软件设计4层电梯监控系统

简要分析了电梯监控系统的组成，详细介绍利用PLC实现对四层电梯的运行控制，并采用组态王软件实现电梯监控系统的设计，组态监控系统与PLC控制系统进行实时数据交换，在组态监控画面上能实时反映电梯的运行状态，并能通过监控画面控制电梯运行状态，从而实现对电梯运行状态的双向控制。     

Experimental study on a model azimuthing podded propulsor in ice

The objective of this study was to investigate the performance of a model azimuthing podded propulsor in ice-covered water. Model tests were carried out with two different depths of cut into the ice (15 and 35 mm), two different ice conditions (presawn and pack ice conditions), and four different azimuthing angles. The depth of cut is the maximum penetration depth of the propeller blade into the ice block. The 0.3-m-diameter model propeller was operated in a continuous ice milling condition. Ice loads were measured by several sensors which were installed in various positions on the model. Six one-axis pancake-style load cells on the top of the model measured the global loads and two six-component dynamometers were installed on the shaft to measure the shaft loads. One six-component dynamometer was attached to the one of the propeller blades inside the hub to measure the blade loads. The pod unit and propeller performance in ice are presented. Ice-related loads, which were obtained when the blade was inside the ice block, are introduced and discussed. During the propeller–ice interaction, a blade can experience the path generated by the previous blade, which is called the shadowing effect. The effects of shadowing, depth of cut, azimuthing angle, and advance coefficient on propulsor performance are presented and discussed.     

ADV212编解码芯片原理及应用

ADV212是美国AD公司推出的一款用于视频和高带宽静止图像压缩的单片JPEG2000编解码芯片.介绍了ADV212的主要特点及功能,并给出了ADV212的几种典型应用电路.     

基于模糊决策分析的建筑结构可靠性的评定

船舶电气设备的故障管理包括对设备故障的预防、故障原因查找和故障后果处理,文章从管理的角度阐述了防止船舶电气设备故障的预防措施,介绍了查找故障原因和处理故障的一般通用方法.