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31.
An Advanced Loose Parts Monitoring System (its acronym is ALPS) has been developed and installed on each unit of the Paks Nuclear Power Plant, Hungary. ALPS uses sophisticated methods to identify the events hidden in the quite extensive background noise of nuclear power plants. A classification algorithm based on an expert system, which is trained during the start-up period of each fuel cycle, helps to improve the false alarm rate. Thus the false alarm rate was reduced to a minimum, statistically below 1%. In practice, even the remaining “false alarms” were identified to be originating from other noise sources using ALPS. The main principles of ALPS are presented. It is demonstrated, that even weak signals, comparable with the resolution of the analog-digital board, i.e. comparable with detection noises, can be identified at high certainty. Other events like vibration of the shaft of motor operated isolating valves have been identified by ALPS. Furthermore, experiences gained during the installation period are also discussed. 相似文献
32.
稠油油藏出砂冷采技术实践 总被引:4,自引:5,他引:4
套保油田为普通稠油油藏,其开发的难点是常规冷采产能低、递减快,蒸汽吞吐开采注入压力过高破坏隔层导致底水上窜、注入压力过低不能保证注入蒸汽质量导致开采效果差。因此开展出砂冷采试验,经研究及现场试验形成了较完善的配套工艺技术,出砂冷采在套保油田白92块工业化应用,单井日产油达到10~30m^3/d,为常规冷采产量的10~20倍。 相似文献
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针对矿山压力较大矿井存在一旦暴露就易垮落的松散围岩,采用快速有效的超前钻孔注浆加固,形成再生假顶,从而实现调动围岩自承力的内注外锚加固技术,是一种安全上可靠、技术上可行、经济上合理、较强,推广前景远的支护技术。 相似文献
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龚水迁 《制冷空调与电力机械》2011,32(1):52-54,72
通过介绍Siemens6R A70直流调速产品的peer链接通讯特点,结合卸船机抓斗运行工况,讲述如何通过点对点链接,在传动装置内部实现抓斗的各项功能。 相似文献
38.
Healthcare organizations are often organized in a modular, loosely coupled fashion where separate and semi-autonomous work
units specialize in different areas of care delivery. This partitioning allows each unit to adapt to emerging practice standards
in its area of expertise and to adjust to its local work environment. However, organizational loose coupling can limit the
flow of information within organizations and can make it difficult to coordinate services when patients’ care is dependent
on professionals from more than one unit. Groupware systems have the potential to improve coordination and information access
in healthcare organizations. However, modularity and loose coupling make it difficult to introduce new systems when they span
more than one unit, since authority is not always centralized and since perceptions and frames of reference on new deployments
differ across units. In this paper, we define a groupware deployment framework for loosely coupled healthcare organizations
that has two parts: a set of deployment challenges and a set of deployment strategies. The deployment challenges include:
difficulties centralizing deployments, perceptions of inequity, role conflicts, and problems achieving critical mass. The
deployment strategies outline a preliminary set of approaches for addressing the difficulties of deploying CSCW systems in
loosely coupled healthcare organizations. We illustrate the framework by presenting a case study of a groupware deployment
in a home care setting. 相似文献
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金属跌落零件冲击响应信号的时频分析 总被引:1,自引:0,他引:1
分别研究了用平滑Wigner分布和小波变换分析跌落零件冲击信号的方法,比较了各种分析方法的特点。结果表明,这些时频域分析方法有很多优越性,但是也存在一些有待进一步研究的问题。 相似文献