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水文地质工程地质 2003年第6期30卷 33-36页

作者：王赟赵发展蔡纲田小红励宝恒中国科学院地质与地球物理研究所北京100101 中国地质调查局发展研究中心北京100083 中国石油股份公司大港油田分公司油气勘探开发技术研究中心天津300280

传统的水文地质研究方法在进行地下水水质评价时,是通过地下水的取样进行分析化验,确定含水岩组中水的矿化度。目前,在利用已有的地质、地球物理资料进行西部地下水资源评价的研究中,鉴于大多数石油井中没有浅层地下水的水样化验资料,... 详细信息

传统的水文地质研究方法在进行地下水水质评价时,是通过地下水的取样进行分析化验,确定含水岩组中水的矿化度。目前,在利用已有的地质、地球物理资料进行西部地下水资源评价的研究中,鉴于大多数石油井中没有浅层地下水的水样化验资料,本文介绍一种利用石油测井数据计算地下水矿化度的方法,并将之应用于鄂尔多斯白垩系自流水盆地地下水矿化度估算。应用实例证明这种方法是较为可靠的,虽然存在一定的误差,但基本可以满足地下水矿化度分级评价的要求,从而开发了石油测井数据在水文地质中的应用,减少了地下水水质评价的资金投入,同时提高了矿化度预测的精度。

关键词：地下水矿化度检测地球物理方法水质自然电位电阻率

Ship Size and Service Configuration in Container Shipping

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Journal of Southwest Jiaotong University(English Edition) 2009年第1期17卷 72-79页

作者：徐骅金凤君 Institute of Geographic Sciences and Natural Resources research Chinese Academy of Sciences Graduate School of Chinese Academy of Sciences

This study analyzes the effect of ship size on the liner service configuration by establishing an economic model. The service configuration is characterized by the distance of service and the number of calling ports. A study ease is presented for illustration. At last such a conclusion is drawn that given a fixed profit, the ship size will change with the extension of service in the same direction, while the change rate of ship size is a little higher than that of the extension of service.

关键词： Container shipping Service configuration Marginal product of distance Marginal product of port number

中国比较教育学理论建设的几个问题(提纲)——与中外哲学的对话

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外国教育研究 2001年第2期28卷 21-27页

作者：王长纯首都师范大学国际与比较教育研究中心北京100037

经济全球化条件下如何加强中国比较教育理论建设是比较教育学界面临的一个重大问题。作者以中外哲学为视界从经济全球化条件下比较教育的发展潜力与老子“见几而作”的哲学思想、重新认识与理解“比较”与墨家“俱异同于一”的哲学思想... 详细信息

经济全球化条件下如何加强中国比较教育理论建设是比较教育学界面临的一个重大问题。作者以中外哲学为视界从经济全球化条件下比较教育的发展潜力与老子“见几而作”的哲学思想、重新认识与理解“比较”与墨家“俱异同于一”的哲学思想、主流与非教育思想研究和许衡的辩证观、比较学习和孔子的“学论”、中国比较教育理论建设的现实转向与儒家“事人”“力行”的思想等五个方面对这一重大问题进行了探讨。该文强调以“和而不同”

关键词：中国比较教育学教育理论哲学教育思想

Permo-Carboniferous Sequence Stratigraphy and Sea Level Changes in North china Platform

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Journal of Earth Science 1999年第2期18卷 47-55页

作者： Li Baofang Li Guidong Wen Xianduan Department of Energy Geology, china University of Geosciences, beijing 100083

Through a sequence stratigraphic research on the Permo-Carboniferous in North china, it is suggested that the boundary of the Carboniferous and the Permian may be better moved down to the bottom of the main workable coalbed which is overlain by the limestones containing Pseudoschwagerina zone. This study mainly deals with the Upper Carboniferous, the Lower Permian and the lower part of the Middle Permian coal bearing strata, which are 150-180 m thick totally and can be divided into 2.mesosequences, including 6 sequence sets and 19 sequences. The lithostratigraphic units are diachronous in North china. The upper two limestones of the Taiyuan Formation in the central part of the study area may be correlated with the bottom two limestones of the lower Taiyuan Formation in the southern part. The Shanxi Formation in the central and northern parts may be correlated with most of the Taiyuan Formation in the southern part. The Xiashihezi Formation in the northern part may be correlated with the upper part of Shanxi Formation in the central and southern parts. The Shangshihezi Formation in the northern part may be correlated with the Xiashihezi Formation in the southern part. The paleogeographical maps are compiled in a chrono stratigraphic framework. From the Late Carboniferous to the Early Permian, 3 cycles of sea level change and transgression regression occurred, and the major transgression took place in the Asselian. In the Late Carboniferous, the direction of transgression was from the east to the west, and in the Early Permian it was from the southeast and the southwest to the north. Three workable coalbed groups were formed in Asselian, early Sakmarian and late Sakmarian respectively. The TST coals developed under the bottom of the Asselian limestones are the best coals for coalbed meathane extracting. The Sakmarian coal beds were formed in HST. The coal beds of Lower Permian distribute southward along with the relative sea level falls and sediment prograd

关键词： sequence stratigraphy sea level change lithofacies and paleogeography Permo-Carboniferous North china.

Determination of paleo-pressure for a natural gas pool formation based on PVT characteristics of fluid inclusions in reservoir rocks——A case study of Upper-Paleozoic deep basin gas trap of the Ordos basin

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Science china Earth Sciences 2004年第6期47卷 507-513页

作者： MI Jingkui1,2.XIAO Xianming1,LIU Dehan1,& SHEN Jiagui1 1.State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,china 2.Institute of Sedimentary Mineral and Resources,Department of Civil Engineering,Xiangtan Polytechnic University,Xiangtan 4112.1,china 1. State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences 510640 Guangz China 2. Institute of Sedimentary Mineral and Resources Department of Civil Engineering Xiangtan Polytechnic University 411 Xiangtan China

It has been proved to be a difficult problem to determine directly trapping pressure of fluid inclusions. Recently, PVT simulation softwares have been applied to simulating the trapping pressure of petroleum inclusions in reservoir rocks, but the reported methods have many limita- tions in practice. In this paper, a method is suggested to calculating the trapping pressure and temperature of fluid inclusions by combining the isochore equations of a gas-bearing aqueous inclusion with its coeval petroleum inclusions. A case study was conducted by this method for fluid inclusions occurring in the Upper-Paleozoic Shanxi Formation reservoir sandstones from the Ordos basin. The results show that the trapping pressure of these inclusions ranges from 2. to 32.MPa, which is 6─7 MPa higher than their minimum trapping pressure although the trapping temperature is only 2.3℃ higher than the homogenization temperature. The trapping pressure and temperature of the fluid inclusions decrease from southern area to northern area of the basin. The trapping pressure is obviously lower than the state water pressures when the inclusions formed. These data are consistent with the regional geological and geochemical conditions of the basin when the deep basin gas trap formed.

关键词： Ordos basin, fluid inclusion,PVTsim,trapping pressure.

FUZZY-BASED NETWORK BANDWIDTH DESIGN UNDER DEMAND UNCERTAINTY

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Journal of Systems Science & Complexity 2010年第1期23卷 61-70页

作者： Lean YU Wuyi YUE Shouyang WANG Institute of Systems Science MADIS Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijiny 100190 China Department of Intelligence and Informatics Konan University Kobe 658-8501 Japan. Institute of Systems Science MADIS Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China.

In communication networks （CNs）, the uncertainty is caused by the dynamic nature of the traffic demands. Therefore there is a need to incorporate the uncertainty into the network bandwidth capacity design. For this purpose, this paper developed a fuzzy methodology for network bandwidth design under demand uncertainty. This methodology is usually used for offiine traffic engineering optimization, which takes a centralized view of bandwidth design, resource utilization, and performance evaluation. In this proposed methodology, uncertain traffic demands are first handled into a fuzzy number via a fuzzification method. Then a fuzzy optimization model for the network bandwidth allocation problem is formulated with the consideration of the trade-off between resource utilization and network performance. Accordingly, the optimal network bandwidth capacity can be obtained by maximizing network revenue in CNs. Finally, an illustrative numerical example is presented for the purpose of verification.

关键词： Communication networks demand uncertainty fuzzy set theory network bandwidth design network optimization.

Spatial Characteristics of Soil Organic Carbon Storage in china's Croplands

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Pedosphere 2005年第4期15卷 417-423页

作者： WANG Shao-Qiang YU Gui-Rui ZHAO Qian-Jun NIU Dong CHEN Qing-Mei WU Zhi-Feng Institute of Geographic Sciences and Natural Resources research Beijing 10010 （China）. Guangdong Institute of Eco-Environment and Soil Science Guangzhou 510650 （China）

The soil organic carbon (SOC) pool is the largest component of terrestrial carbon pools. With the construction of a geographically referenced database taken from the second national general soil survey materials and based on 1546 typical cropland soil profiles, the paddy field and dryland SOC storage among six regions of china were systematically quantified to characterize the spatial pattern of cropland SOC storage in china and to examine the relationship between mean annual temperature, precipitation, soil texture features and SOC content. In all regions, paddy soils had higher SOC storage than dryland soils, and cropland SOC content was the highest in Southwest china. Climate controlled the spatial distribution of SOC in both paddy and dryland soils, with SOC storage increasing with increasing precipitation and decreasing with increasing temperature.

关键词： carbon storage cropland soil organic carbon spatial characteristics

Finite-time Disturbance Attenuation of a Class of Uncertain Nonlinear Systems

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Finite-time Disturbance Attenuation of a Class of Uncertain ...

NUMERICAL MODELLING OF FLOW FIELD IN A TIDAL RIVER AND THE NEAR FIELD OF INTAKE FOR A NUCLEAR POWER PLANT

第二十九届中国控制会议

作者： MO Lipo1,2.JIA Yingmin2.3,ZHENG Zhiming2.LIU Zaiwen1 1.School of Computer and Information Engineering,beijing Technology and Business University,beijing 100048,P.R.{2. 2.Key Laboratory of Mathematics,Informatics and Behavioral Semantics,Ministry of Education,Beihang University,beijing 100191,P.R.{2.3.The Seventh research Division,Beihang University,beijing 100191,P.R.{2.

This paper is concerned with the finite-time disturbance attenuation problem of a class of uncertain nonlinear *** analysis is performed based on the finite-time Lyapunov stability *** the backstepping technology,a control law is constructed to make the closed-loop system satisfy finite-time H∞ ***,simulation results are provided to demonstrate the effectiveness of the obtained results.

关键词： Disturbance attenuation H∞performance uncertainty finite-time stability partial state feedback

来源： cnki会议评论

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Journal of Hydrodynamics 1990年第2期2卷 58-67页

作者： Cai Ti-qin Qin Su-di Wu Jiang-hang, Peking University, beijing 100871, P.R.chinaFan Jian-hua, Institute of Water Conservancy and Hydroelectric Power {2., beijing 100044, P.R. china

This Paper concerns with the numerical modelling of flow field in a tidal river and in the vicinity of intake of a nuclear power plant. The hybrid method of fractional steps presented in [1] was adopted in this modelling. In order to simulate the local flow field nearby the water intake meticulously, the technique of the match of the coarse and fine grids was used. The numerical results are in good agreement with the in-situ measurements of the main current. The detailed data of local flow field nearby the intake provides the assessment of the sediment transport characteristics in the vicinity of intake of the nuclear power plant.

关键词： NUMERICAL MODELLING OF FLOW FIELD IN A TIDAL RIVER AND THE NEAR FIELD OF INTAKE FOR A NUCLEAR POWER PLANT