鄂尔多斯盆地长7储层致密油水平井CO2补充能量与吞吐参数优化

长7储层是鄂尔多斯盆地主要的致密区块,近一半的致密油分布其中。针对长7储层开采渗透率低、开采难度大、依靠弹性开采产能较低、能量衰竭较快等问题,通过数值模拟的方法,构建水平井分段压裂数值模拟模型,首先对比不同吞吐方式对油田产能的影响,优选出CO₂吞吐为首选的补充能量方式。其次对井网形式、井网参数及吞吐参数进行优化研究。最终优选出合适的吞吐方案,达到提高生产效率的目的。结果表明,该储层的最优注采吞吐参数为：周期注入量为2 673 t、注入压力为21 MPa、注入速度为90 t/d、焖井时间为10 d。研究对鄂尔多斯盆地长7储层提高采收率具有一定的参考意义。     

一种总体最小二乘算法及在Volterra滤波器中的应用

针对输入输出观测数据均含有噪声的滤波问题，提出了一种鲁棒的总体最小二乘自适应算法．该算法利用滤波器的增广权向量的瑞利商为损失函数，导出了其自适应迭代公式，并利用随机离散学习规律对权向量模的分析进行算法梯度修正，提高了算法的噪声鲁棒性，而且使得算法简单，稳定性好，收敛精度高．将该算法应用于Volterra滤波器，可使滤波器在非线性系统中的信噪比达到10dB，在学习因子为0．01时，算法仍然能够保持良好的收敛性．仿真结果表明，即使在高噪声环境或使用较大学习因子的情况下，该算法的鲁棒抗噪性能和稳态收敛精度均明显高于其他总体最小二乘方法．     

基于低碳经济模式的山东省产业结构调整对策研究

在低碳经济时代,以山东省为研究对象,定量分析了其产业结构变化,估算了2005年以来的耗能情况和三次产业碳排放量.山东省三次产业结构模式与其产业能源消费模式和产业碳排放量模式具有一致性,在此基础上提出了山东省产业结构调整的对策建议,即改善产业能源结构,开发利用新能源;大力发展第三产业;强化行政铁腕,优化工业结构;开展低碳试点,发挥示范作用.     

Resolution for Conflicts of Inter-Operation in Multi-Domain Environment

This paper proposes a method to formalize the interoperation in multi-domain environment. Through employing the algebra method, we conclude four types of the conflicts for the interoperation, and analyzes the cause of the policy conflicts. For each type of conflicts, we formalize it and proposes the method of detection and resolution. Finally, the method is illuminated be effective through comparing our work with others.     

TSPN: Term-based semantic peer-to-peer networks

In this paper, we propose Term-based Semantic Peer-to-Peer Networks (TSPN) to achieve semantic search. For each peer, TSPN builds a full text index of its documents. Through the analysis of resources, TSPN obtains series of terms, and distributes these terms into the network. Thus, TSPN can use query terms to locate appropriate peers to perform semantic search. Moreover, unlike the traditional structured P2P networks, TSPN uses the terms, not the peers, as the logical nodes of DHT. This can with-stand the impact of network churn. The experimental results show that TSPN has better performance compared with the existing P2P semantic searching algorithms.     

A Survey of Web Information Systems and Applications

0 IntroductionWiththe rapid development of Internet , more and more Webinformation systems and applications are emergingand alot of newchallenges have beenrising and some open problems needto be solvedfromthe academic andindustrial points of viewintheseresearchareas .To meet the needs of sharingandexchangingresearchachievements anddevelopment experiences fromboth academic andindustry communities ,the Office Automation and Electronic Govern-ment Society of China Computer Federation(CCF) ha…     

集成数据库和文件系统的多数据库事务模型

提出了一种适合于集成文件系统和数据库系统的多数据库事务模型,讨论了事务模型组成元素全局事务管理器、事务提交协议和局部执行代理的设计与实现．     

一种大数据平台敏感数据安全共享的框架

 大数据平台存储了海量的用户敏感数据,这些敏感数据的共享有助于企业降低为用户提供个性化服务的成本,实现数据增值,而数据的安全共享是一个亟待解决的问题.通过分析敏感数据安全现状,提出了一个大数据平台敏感数据安全共享系统框架,包括数据平台上敏感数据的安全提交、存储、使用和销毁;研究了基于密文异构转化的代理重加密算法和基于虚拟机监控器的用户进程保护方法等关键技术,为系统功能的实现提供了支撑.该框架能够保护用户敏感数据的安全性,有效实现这些数据的安全共享,同时使数据拥有者完全掌握自身数据的控制权,从而有利于营造现代互联网信息安全的良好环境.     

Trust Degree of Web Services and Its Evaluation with Neural Network

0 IntroductionAWeb serviceis a software systemdesignedtosupportin-teroperable machine-to-machine interaction over a net-work.It is an abstract notion that must be i mplemented by aprovider agent[1]. With the widespread proliferation of Webservices ,howto select a trustable Web service has become acrucial problemof Web services requester .So requester agentmust correctlyevaluate Webservices andselect the appropriateone to use. We define the result fromevaluation of Webserv-ice as Web servic…