经济学

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期刊

作者：LU Lipeng，CHEN Maozhang （ Department of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China ）
关键词：turbulence model；Reynolds stress；dissipation rate；near-wall region；3-D waves
摘要： A 3-D wave model for the turbulent coherent structures in near-wall region is proposed. The transport nature of the Reynolds stresses and dissipation rate of the turbulence kinetic energy are shown via computation based on the theoretical model. The mean velocity profile is also computed by using the same theoretical model. The theoretical results are in good agreement with those found from DNS, i...
被引量：8

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作者：LI Xianxian，HUAI Jinpeng （ School of Computer, Beihang University, Beijing 100083, China ）
关键词：密码协议；有限构造算法；安全性；形式分析
摘要： An efficient approach to analyzing cryptographic protocols is to develop automatic analysis tools based on formal methods. However, the approach has encountered the high computational complexity problem due to reasons that participants of protocols are arbitrary, their message structures are complex and their executions are concurrent. We propose an efficient automatic verifying algorithm for anal...

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Construction of First GSP Gasification Unit Was Kicked off at Shenhua Ningxia Coal Industry(Group)Co.,Ltd.in China

关键词：煤加工行业；市场竞争；产品开发；煤炭价格
摘要： The construction of the core unit for the coal-based olefinproject—the GSP gasification unit,the investment in whichtotals 20 billion RMB,has been kicked off at ShenhuaNingxia Coal Industry (Group) Co.,Ltd.,in Ningxia,China.It is told that this is the first gasification unit that adopts theGSP gasification technology in China.The GSP gasifica-
被引量：1

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Energy Consumption and Analysis on Energy Saving Measures at SINOPEC's Large Refineries

作者：Zhuang Jian，Hou Kaifeng，Yan Chun，Li Zhiqiang （ SINOPEC Engineering Incorporation,Beijing,100101 ）
关键词：能源储备；炼油企业；处理单元；指示剂
摘要： This article sums up the energy consumption of process units and the overall energy consumption of 10 Mt/a class refineries constructed or revamped in recent years.The energy saving measures adopted in design of these refineries are analyzed and discussed.Finally,this article also makes comments and puts forward recommendations on the objectives for energy conservation at refineries in the future.
被引量：5

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THE FIRST-ORDER APPROXIMATION OF NON-KIRCHHOFF-LOVE THEORY FOR ELASTIC CIRCULAR PLATE WITH FIXED BOUNDARY UNDER UNIFORM SURFACE LOADING (Ⅲ)──NUMERICAL RESULTS

作者：钱伟长，盛尚仲
关键词：elasticity；circular；plate；non-Kirchhoff-Love；theory；global；interpolation；method

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作者：史炜¹，马聪卉²，赵雪峰¹ （ ¹国家发改委经济体制与管理研究所市场与产业室;²国家发改委经济体制与管理研究所公共管理室）
关键词：次贷危机；电信监管；发展战略
摘要：美国次贷危机所引发的金融海啸对全球的金融体系和经济发展产生了深远的影响,本文深入分析了美国次贷危机的形成原因及其对全球和中国经济的影响,在此基础上,结合中国电信业当前的发展状况,提出了中国电信业变革监管机制、修正发展思路的原则和相关建议。

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700 kt/a PX Project to Be Commissioned at Dalian Fujia Dahua Co.

关键词：项目；PX；大连；混合二甲苯；克拉；有限；人民币；商业性
摘要： On April 1, 2009 a tanker loaded with 2000 metric tons of mixed xylenes was berthed at Dalian Fujia Dahua Wharf. The arrival of mixed xylene cargo has incarnated a timing for commissioning the 700 kt/a paraxylene (PX) project. The investment in this PX project totals 4.5 billion RMB. The mechanical completion of this project was realized in

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Yantai Wanhua to Start up the Phase Ⅱ 300-kt/a MDI Project in Ningbo by 2010

关键词：MDI；宁波市；烟台；项目；施工工作；回收利用；生产成本；生产线
摘要： Yantai Wanhua Company in Shandong plans to start up its phase Ⅱ 300 kt/a MDI production line in Ningbo by 2010. The construction of this project was kicked off in October 2008, and the construction work is being carried out in an

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观点·数据

关键词：手机用户；新兴市场；移动支付；数据显示；移动数据业务；增长；运营商；经济衰退；移动通信业务；亚太地区
摘要：数据100亿美元根据咨询公司Informa对电信和媒体行业的预测显示,移动支付的全球交易总价值将在未来5年时间内增长12倍,到2013年,将有近3000亿笔、价