泰安抽水蓄能电站地下洞室群工程测量控制

在地下洞室的开挖中，控制测量是工程测量的关键，怎样合理、准确的进行地下控制测量值得我们探讨。文章就地下洞室开挖工程测量控制网的设计、建立、施测及成果计算方法作一介绍。     

Position Adaptive Measurement Model for Double-four Quadrant Photoelectric Detector

A modeling method of the support vector machine combined with matrix optics is considered; a complete new measurement model for double-four quadrant photoelectric detector is built. According to the analysis of the received light spot size and its motion with the changes of the defocusing amount of detector photosensitive surface and the detector position attitude in the optical path, a mathematic expression of photoelectrical conversion is given, which can be applicable to random setting position of the detector at any time. Based on least square support vector machine （LS SVM）, the mapping relationship among the output signal linear characteristic parameters （zero neighborhood gradient and intercept）, the defocusing amount of the detector and the installation position attitude angle is established. Thus, the multiple dimensional high accuracy measuring and adjusting control system can be left out, and adaptive measurement of the detector parameters can be realized. Compared with existed measurement model and method, the presented model has the advantages of more clear physical meaning, closer to work mechanism of detector, acquiring more complete sample data and wiping out the dead spots or bad spots in measurement. And the accuracy of displacement measurement is increased to 3μm. At the same time, this measurement mode provides a technical shortcut for three-dimensional small angle measurement.     

光分组网中冲突解决方案的研究新进展

综述了目前解决光分组网冲突的几种方案,及其最新研究进展,指出在今后光分组网中可能采用的最佳冲 突解决方案。     

波音公司的计量测试工作--赴波音公司考察报告

由中航一集团北京长城计量测试技术研究所(CIMM)等单位组团对美国波音公司的计量业务进行了考察，文章介绍了考察活动以及波音公司计量业务基本状况。     

毛细管气相色谱法测定复合油墨中有机溶剂

建立了用毛细管气相色谱法测定复合油墨中有机溶剂的方法。实现了对复合油墨中有机溶剂的监控。该方法是指导生产的有效手段之一。     

圆波导螺钉极化器的分析与设计

利用圆波导中螺钉电纳的经验公式，用计算机辅助分析螺钉极化器的螺钉对数，间距等与相位和驻波的关系，给出了一组工程上十分有用的曲线。为了改善螺钉极化器的最佳性能。     

布式物理时钟同步的设计与实现

本文讨论了华中分布式ＵＮＩＸ系统中物理时钟同步的设计与实现技术，这种同步策略基于分布式控制，利用相邻结点的时钟值实现整个系统物理时钟的快速精确同步。     

石油矿场设备诊断技术的应用现状及建议

介绍了设备故障诊断技术在油田压气站的压风机、采油厂的离心压缩机、热电厂的引风机主轴承、机械厂的热处理温度监测等方面的应用概况和特点。指出油田设备诊断技术存在应用范围窄、所用技术单调、成套设备在线监测与故障诊断系统甚少等3个问题。针对这些问题，提出3点建议：尽快建立以预知维修为主的维修制度；组建一支高素质的技术队伍；成立设备诊断技术研究中心和工程公司。