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Role Modeling: A Modeling Method for software Pattern at Knowledge Level

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 200-203页

作者： Xu Yong\|song 1,He Ke qing 1,Ying Shi 2 1.School of Computer, wuhan university, wuhan 43.072, china 2.state key laboratory of software engineering, wuhan university,wuhan 43.072, china School of Computer Wuhan University Wuhan China state key laboratory of software engineering Wuhan University Wuhan China

Based on dominant degree of role model among the viewpoints for object oriented modeling process, it dissertates that role modeling is a modeling method for software pattern at knowledge level. After giving some examples for modeling design pattern and analysis pattern at knowledge level using role model, it presents a process for refining design pattern from role model to class model and event trace diagram of UML. In this paper, we advocate the opinion that role modeling before object modeling of UML.

关键词： object oriented role modeling software pattern UML

Coupling the hydrological and ecological process to implement the sustainable water resources management in Hanjiang River Basin

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Science china(Technological Sciences) 2009年第11期52卷 3240-3248页

作者： ZHANG Xiang1 & XIA Jun2 1 state key laboratory of Water Resources and Hydropower engineering Science, wuhan university, wuhan 43.072, china 2 key laboratory of Water Cycle and Related Land Surface Processes, IGSNRR, Chinese Academy of Sciences, Beijing 100101, china 1. state key laboratory of Water Resources and Hydropower engineering Science Wuhan University Wuhan 430072 China 2. key laboratory of Water Cycle and Related Land Surface Processes IGSNRR Chinese Academy of Sciences Beijing 100101 China

Research on the combination of hydrological variation and ecological demands plays an important role in water availability assessment and sustainable management on basin scale. An integrative frame, consisting of hydrological regime modelling, ecological water demands estimation and renewable resources management, is given in this paper in order to support the implementation of the sustainable water resources management. The suggested integrative frame has been used to study the integrated water resources management in southern Hanjiang River Basin which is the water source of South-toNorth Water Transportation Project in china. SWAT (soil and water assessment tool) model was used to simulate the monthly averaging streamflow and the amounts of ecological water demands in stream were also estimated in order to evaluate the available water resources for the local users and the transportation project. Then we formed the developing scenarioes by coupling the available water resources, the recovering rate of water resources in natural water cycle, the local water use rate and the amounts of the water transported to North, and used the Scheafer model to analyze their evolving trajectories. Eventually, the sustainable water resources management measures were assembled by the comprehensive evaluation of the scenarioes. The research indicates that the integrative frame provided a new way for the integrated water resources management in river basin.

关键词： SWAT (soil and water assessment tool) Scheafer model ecological water demands water resources availability sustainable water resources management

Grain Size and Wettability of TiO_2/SiO_2 Photocatalytic Composite Thin Filing

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Rare Metals 2001年第2期20卷 81-86页

作者： Jiaguo Yu, Xiujian Zhao, Jimmy C Yu, Jun Lin (state key laboratory of Advanced Technology for Materials Synthesis and Processing, wuhan university of Technology, wuhan 430070, china Deportment of Chemised The Chinese university of Hong Kong, Hong Kong, 武汉工业大学材料复合新技术国家重点实验室湖北武汉 430070 香港大学化学系香港 430070

The uniform transparent TiO2/SiO2 photocatalytic composite thin films are prepared by sol-gel method on the soda lime glass substrates, and characterized by UV-visible spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), BET surface area, FTIR spectroscopy and X-ray photoelectron spectroscopy (XPS). It was found that the addition of SiO2 to TiO2 thin films can suppress the grain growth of TiO2 crystal, increase the hydroxyl content on the surface of TiO2 films, lower the contact angle for water on TiO, films and enhance the hydrophilic property of TiO2 films. The super-hydrophilic TiO2/SiO2 photocatalytic composite thin films with the contact angle of 0((o) under bar) are obtained by the addition of 10%-20% SiO2 in mole fraction.

关键词： sol-gel method TiO2/SiO2 photocatalytic composite thin films grain size wettability

MATHEMATICAL MODEL FOR THE FLOW WITH SUBMERGED AND EMERGED RIGID VEGETATION

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Journal of Hydrodynamics 2009年第5期21卷 722-729页

作者： HUAI Wen-xin CHEN Zheng-bing HAN Jie ZHANG Li-xiang ZENG Yu-hong state key laboratory of Water Resources and Hydropower engineering Science Wuhan University Wuhan430072 China Department of engineering Mechanics Kunming University of Science and Technology Kunming 650051 China

The article summarizes previous studies on the flow in open channels with rigid vegetation, and constructs a mathematical model for submerged and emerged rigid vegetation. The model involves the forces balance in the control volume in one-dimensional steady uniform flow. For submerged vegetation, the whole flow is divided into four regions： external region, upper vegetated region, transition region and viscous region. According to the Karrnan similarity theory, the article improves the mixing length expression, and then gives an analytical solution to predict the vertical distribution of stream-wise velocity in the external region. For emerged vegetation, the flow is divided into two region： outer region and viscous region. In the two circumstances, the thicknesses of each region are determined respectively. The comparison between the calculated results and our experimental data and other researchers＇ data proves that the proposed model is effective.

关键词： Karman similarity theory mixing length submerged and emerged rigid vegetation velocity distribution

Preparation and Characterization of Chitosan/Carboxymethylated Konjac Glucomannan Blend Films

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wuhan university Journal of Natural Sciences 2002年第1期7卷 107-112页

作者： Zheng Hua 1 , Du Yu-min 2 1. Department of Chemical engineering, wuhan university of Technology, wuhan 430070, hubei, china 2. College of Chemistry and Molecular Sciences, wuhan university, wuhan 43.072, hubei, china wuhan university of Technology Department of Chemical Engineering Wuhan Hubei China (GRID:grid.162110.5) (ISNI:***) wuhan university College of Chemistry and Molecular Sciences Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

In order to improve the mechanical and water swelling properties of the chitosan (CS) film, a series of transparent films were prepared by blending 2%(weight) chitosan acetic acid solution with 1.5%(weight) carboxymethylated konjac glucomannan (CMKGM) aqueous solution according to predetermined ratio and drying at 30°C. The morphological structure, miscibility, thermal stability, mechanical properies, and swelling capacity of the blend films were studied by infrared (IR), X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron micrograph (SEM), and measurements of the mechanical properties and swelling properties. The results demonstrated that there was strong interaction and good miscibility between CS and CMKGM resulted from intermolecular hydrogen bonding and electrostatic force. The mechanical properties in dry state and wet state, thermostability, and water swelling properties of the blend films were obviously improved. The best values of the tensile strength in the dry and wet state achieved 89 MPa and 49 MPa, respectively, when the CMKGM content was 30%(weight). The CS/ CMKGM blend films provided promising biomedical applications.

关键词： key words chitosan carboxymethylated konjac glucomannan blend films structure characterization

Multistage evolution of continental collision orogen:A case study for western Dabie orogen

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Chinese Science Bulletin 2009年第15期54卷 2568-2579页

作者： WU YuanBao state key laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, china university of Geosciences, wuhan 430074, china state key laboratory of Continental Dynamics, Department of Geology, Northwest university, Xi’an 710069, china state key laboratory of Geological Processes and Mineral Resources Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China state key laboratory of Continental Dynamics Department of Geology Northwest University Xi’an 710069 China

The foramtion and evolution of collisional orogen is a prominent feature along convergent plate margins, and is generally a complex process. This article presents an integrated study of zircon genesis, U-Pb age and Lu-Hf isotope composition as well as geological characteristics for the western Dabie orogen to constrain its multi-stage evolution history. The results suggest that the formation of oceanic crust in the Huwan area was constrained at ca. 400―430 Ma, which was slightly later than the collision of the northern Qinling with the North china Block. It formed in a marginal basin in the northern margin of the Yangtze Block. The peak metamorphism of eclogite in the Huwan area occurred at ca. 310 Ma, and the timing of the initial exhumation of oceanic eclogite was about 270 Ma. The high to ultrahigh pressure (HP-UHP) metamorphic rocks in the Xinxian and the Hong'an metamorphic zones have the same ages and natures as those of the HP-UHP metamorphic rocks in the other Dabie-Sulu terrains, and also have experienced multi-stage exhumation, and thus can be taken as a coherent part of the Dabie-Sulu orogen. Therefore, the Qinling-Dabie-Sulu orogen is a typical multi-stage continental collision orogen, with an amalgamation process extending more than 200 Ma.

关键词：大别造山带大陆碰撞西部演变超高压变质岩碰撞造山带苏鲁造山带变质岩区

Code Component Composition Reuse Is a New Programming Paradigm

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 292-297页

作者： Ying Shi 1,Yuan Sheng Qiong 1,Xu Gang 1,He Ke Qing 2 1.state key laboratory of software engineering, wuhan university, wuhan 43.072, china 2.School of Computer Science and Technology, wuhan university, wuhan 43.072, china state key laboratory of software engineering Wuhan University Wuhan China School of Computer Science and Technology Wuhan University Wuhan China

After describing the characteristics of programming paradigm, this paper introduces the approach of code component composition reuse in detail, proposes and discusses viewpoint that code component composition reuse is a kind of new programming paradigm. This paper also specifies the characteristics of this new programming paradigm in detail, and points out some issues that must be resolved for using this new programming paradigm.

关键词： programming paradigm code component code component composition reuse

COMPOSITE ELEMENT MODEL FOR ROCK MASS SEEPAGE FLOW

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Journal of Hydrodynamics 2006年第2期18卷 219-224页

作者： CHEN Sheng-hong FENG Xue-min state key laboratory of Water Resources and Hydropower engineering Science Wuhan UniversityWuhan 430072 China

In this paper, the algorithm developed on the concept of the Composite Element Method （CEM） is proposed for the seepage flow in discontinuous rock masses, The basic idea is that if an element contains one or more discontinuity segments, it will be denoted as a composite element having a set of hydraulic potential values defined at its nodes. By the variation principle, the governing equation can be established to solve the unknown hydraulic potential values at the composite element nodes. The main advantage of the proposed model is that the generation of calculation mesh will not be restricted strongly by the number, the position and the orientation of the discontinuities, A numerical example is presented at the end of the paper, to show the validity of the proposed model.

关键词： Composite Element Method(CEM) rock mass seepage flow

ANALYSIS OF SOLUBLE CHEMICAL TRANSFER BY RUNOFF WATER IN FIELD

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Journal of Hydrodynamics 2008年第3期20卷 382-390页

作者： TONG Ju-xiu YANG Jin-zhong state key laboratory of Water Resources and Hydropower engineering Science Wuhan University Wuhan430072 China

In order to determine the main factors influencing soluble chemical transfer and corresponding techniques for reducing fertilizer loss caused by runoff in irrigated fields, a physically based two-layer model was developed with incomplete mixing theory. Different forms of incomplete mixing parameters were introduced in the model, which was successfully verified with previous published experimental data. According to comparison, the chemicals loss of fertilizer is very sensitive to the runoff-related parameter while it is not sensitive to the infiltration-related parameter. The calculated results show that the chemicals in infiltration water play an important role in the early time of rainfall even with saturated soil, and it is mainly in the runoff flow in the late rainfall. Therefore, prevention of shallow subsurface drainage in the early rainfall is an effective way to reduce fertilizer loss, and the coverage on soil surface is another effective way.

关键词： soluble chemical transfer runoff incomplete mixing sensitive infiltration