改炼高含硫原油扩能改造中蒸馏装置的防腐蚀措施

介绍了金陵分公司常减压蒸馏装置改炼高硫原油扩能改造中采取的防腐蚀措施,主要有:①在易腐蚀部位选用耐腐蚀材料或复合材料;用螺杆压缩机回收三顶(常压塔顶、浅减压塔顶和深减压塔顶)气进行系统脱硫,彻底解决三顶气燃烧对炉管和热管的腐蚀以及对环境的污染问题.②施工中加强易腐蚀部位的焊缝检测和施工监督.③及时、合理调整"一脱三注"的化学药剂用量;高温部位增注高温缓蚀剂.④全员参与防腐蚀管理.⑤应用先进腐蚀在线监测系统和塔顶回流罐或产品罐pH值在线监测系统.该装置从2004年7月10日投产以来运行良好.     

能源实时监控与信息管理系统出现的问题及解决的方法

中国石化北京燕化石油化工股份有限公司动力事业部二供水车间电气改造完成后，能源实时监控与信息管理系统出现线路名称不统一、电流互感系数变比不起作用、数据查询功能及统计报表数据的准确性等问题，严重地影响系统的使用。通过对比分析，找到了出现问题的实质，对源代码进行修改，问题得到了解决。同时也成功地解决了其他部门遇到相类似的问题。     

管道风险管理方法研究

按照管道风险管理的流程分别对管道风险评价、风险控制和决策支持、效能测试和响应进行了论述。针对目前国内管道行业的情况，提出了进行管道风险评价的有效方法及维护措施。着重介绍了国外管道风险可接受标准的情况，作为国内制定管道风险评价标准的参考。     

稠油井调堵防一体化工艺技术

稠油油藏在开发过程中常遇到出砂、出水的问题，开采时分别进行防砂、堵水、调剖3种措施给地层带来了伤害。一次性实现防砂、堵水、调剖的工艺技术，可节约费用，减少对地层的伤害。调堵防材料在防砂的同时具有较好的调剖（堵水）效果，能实现调剖堵水防砂一体化，将该材料注入需要改造的油层，充实地层的大孔喉，颗粒胶结膨胀封堵大孔喉，并改变流体的流动通道起到调剖的作用。     

川东气藏直井完井方法的产能预测研究

在分析研究目前国内外油气井完井产能计算经验公式的基础上，针对四川气田东部浅层气藏常用的几种完井方式，建立了该地区完井产能预测的数学模型。通过实例计算，表明了其数学模型的准确可行性，并为出砂井和非出砂井的完井方式提供了选择依据：对于出砂井，砾石裸眼充填完井方式是最理想的完井方式；对于非出砂井，实际裸眼完井的产能最大。得出的结论对该地区直井完井方式的选择，完井参数优化设计以及产能预测具有一定的指导作用。     

关于天然气水合物钻采工艺技术进展的研究

目前全球正面临着前所未有的能源危机，天然气水合物由于储量大、能量密度高而将成为一种诱人的新型能源。天然气水合物主要存在于冻土带和海洋，在地下处于低温和高压状态，以现有的技术，钻井和开采都存在很大的困难。简要介绍了天然气水合物的性质及储量，阐述了天然气水合物钻井的六个挑战及目前国外天然气水合物的两种钻探方法；同时阐述了以热力法、降压法和化学试剂注入法为主的天然气水合物开采方法，并针对天然气水合物钻采技术现状指出了下一步的研究方向。     

农村饮水解困工程持续利用的探讨

分析了尧都区农村饮水工程存在的问题，阐述了农村饮水解困工程持续利用的管理措施，提出建立新的农村供水市场理念。     

Efficient multicast search under delay and bandwidth constraints

The issue of a multicast search for a group of users is discussed in this study. Given the condition that the search is over only after all the users in the group are found, this problem is called the Conference Call Search (CCS) problem. The goal is to design efficient CCS strategies under delay and bandwidth constraints. While the problem of tracking a single user has been addressed by many studies, to the best of our knowledge, this study is one of the first attempts to reduce the search cost for multiple users. Moreover, as oppose to the single user tracking, for which one can always reduce the expected search delay by increasing the expected search cost, for a multicast search the dependency between the delay and the search cost is more complicated, as demonstrated in this study. We identify the key factors affecting the search efficiency, and the dependency between them and the search delay. Our analysis shows that under tight bandwidth constraints, the CCS problem is NP-hard. We therefore propose a search method that is not optimal, but has a low computational complexity. In addition, the proposed strategy yields a low search delay as well as a low search cost. The performance of the proposed search strategy is superior to the implementation of an optimal single user search on a group of users. Amotz Bar-Noy received the B.Sc. degree in 1981 in Mathematics and Computer Science and the Ph.D. degree in 1987 in Computer Science, both from the Hebrew University, Israel. From October 1987 to September 1989 he was a post-doc fellow in Stanford University, California. From October 1989 to August 1996 he was a Research Staff Member with IBM T. J. Watson Research Center, New York. From February 1995 to September 2001 he was an associate Professor with the Electrical Engineering-Systems department of Tel Aviv University, Israel. From September 1999 to December 2001 he was with AT research labs in New Jersey. Since February 2002 he is a Professor with the Computer and Information Science Department of Brooklyn College - CUNY, Brooklyn New York. Zohar Naor received the Ph.D. degree in Computer Science from Tel Aviv University, Tel Aviv, Israel, in 2000. Since 2003 he is with the University of Haifa, Israel. His areas of interests include wireless networks, resource management of computer networks, mobility, search strategies, and multiple access protocols.     

分类挖掘技术在高校人事管理中的应用

探讨分类挖掘技术在高校实际工作中的应用方式与应用领域。以高校人事管理为模型，应用数据挖掘中决策树算法，对高校人力资源数据源中的信息进行分析，发现其中有价值的数据模式，寻找其中存在的关系和规则，对高校人才规划提供比较客观的决策支持。     

浅谈亚欧海底光缆S2段远供电源(PFE)及其维护管理

以亚欧海底光缆S2段为例,介绍亚欧海底光缆远供电源(PFE)的供电方式,以及其在正常运行时和故障维修时的维护管理方法。探讨在实际维护中如何贯彻落实及灵活运用系统联合维护文档,总结适合中国国情的远供电源维护经验,确保亚欧海底光缆远供电源安全稳定运行。