10 December 2004, Volume 22 Issue 0412
    

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    地理空间数据库整合与更新专题
  • KEY TECHNOLOGIES AND STRATEGIES IN THE DEVELOPMENT OF MULTI-SCALE SPATIAL DATABASE
    AI Ting-hua
    . 2004, 22(0412): 4-8.
    Abstract ( ) Download PDF ( ) HTML   Knowledge map   Save
    Multi-scale representation and multi-scale spatial database play an important role in such fields as the transmission of streaming media data over the web, the self-adaptable visualization of spatial information, the navigation in spatial cognition, the scale match during inter-operation and other applications. Realizing this technology has to resolve the questions including the large data volume, the slow response, the conflicts between data representations and the steep change in scale range. This study aims at the questions above presenting four strategies: storing data of multi-scale versions, accumulating changes based on the initial version, transferring between key state versions and generalizing to derive any version based on the initial state. Among four strategies, the changes accumulation model has been attached importance to be a new method which borrows the ideas from the technology of video data compress.
    • 论文
  • SOME ISSUES ON APPLYING REMOTE SENSING IMAGE TO UPDATE GEOGRAPHICAL INFORMATION
    DU Pei-jun CHEN Yun-hao
    . 2004, 22(0412): 9-13.
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    Oriented to the demands and properties of applying Remote Sensing (RS) image to update geographical information, such topics as information fusion, change detection, data mining and image retrieval were investigated. When RS image was used to update geographical information, both multi-source and multi-temporal RS image fusion were important. In multi-source fusion, decision-level fusion should be emphasized. A new framework of multi-temporal RS information fusion and dynamic analysis including four levels was proposed. According to the demands of automatic information updating, RS Data Mining is proposed, and some key problems were further discussed, also the applications of RS Data Mining to geographical information updating were analyzed. Finally, content-based RS image retrieval used to extract interested images from image database was discussed, and those useful image features were discussed in detail.
  • DATA ASSIMILATION: A NEW MEANS FOR MULTI-SOURCE GEOSPATIAL DATA INTEGRATION
    LI Xin;HUANG Chun-lin
    . 2004, 22(0412): 13-16.
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    Land data assimilation is a new means for multi-source geospatial data integration. We first introduced the conception and composition of the land data assimilation system (LDAS). Data assimilation is the method to integrate observations with model simulation results. The observations can be both direct and indirect data, from different sources and with variant resolutions. The output from a LDAS is datasets of land surface variables with spatiotemporal and physical consistence. We then reviewed major LDASs under development, which include the Global and North American Land Data Assimilation Systems developed by NASA (National Aeronautics and Space Administration), European Land Data Assimilation System, and Land Data Assimilation System for West China. We think that the Land Data Information System derived from LDAS will play a very important role in the new generation GIS.
  • ON THE INTEGRATION OF GEOSCIENCE DATA IN CHINA
    LIU Wan-song DING Lei
    . 2004, 22(0412): 17-18.
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    Based on the results obtained from an analysis on the present situation of geoscience data in China, we propose the principle rulers for geoscience data integration and the contents of geoscience data base.Also we give suggestions on the establishment of geoscience data base and on the functions updating of the data base.
  • THE INTEGRATION AND MEDIA-PLAY OF WAR SCENARIO BASED ON HLA AND GIS
    ZHU Ying-hao;SUN Jun;LI Shao-gang;ZHAO Zhi-qiang
    . 2004, 22(0412): 19-22.
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    HLA is a new standard architecture in recent years, this paper presents the helpful achievements about the integration and media-play of war scenario based on HLA/RTI and GIS.
    • 资源与环境
  • DISCUSSION ON ECOLOGICAL RESTORATION AND RETURNING FARMLANDS TO FORESTS
    PENG Ke-shan;JI Juan-ling;XU Xue-xuan
    . 2004, 22(0412): 23-26.
    Abstract ( ) Download PDF ( ) HTML   Knowledge map   Save
    Based on the present situation of the serious deterioration of ecological environment in west china, the article analyzed the benign circulation state of ecological system in five years of implementing the project of returning farmlands to forests and grasslands, and looked into the influences of the project of returning farmlands to forests and grasslands and ecological restoration on economic development.
    • 论文
  • ECO-ENVIRONMENTAL MONITORING AND PROTECTION MEASURES FOR THE THREE GORGES PROJECT
    HUANG Zhen-li
    . 2004, 22(0412): 26-30.
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    The Three Gorges Project changes the nature conditions such as hydrological regulation which probably induce the eco-environmental changes of related regions, and then bring disputed eco-environmental impacts on the Three Gorges Reservoir Area and even the Yangtze Basin. The Eco-environmental Monitoring Network for the Three Gorges Project is the only mammoth comprehensive academically net in China with trans-regions, trans-agencies, multi-disciplines related to hydrology and water quality, local climate, soil, terrestrial biological resources, hydro-biological resources, land disasters, human health and eco-system of estuary. This paper introduced the Network’s task, contents, construction, macro-structure and its features and then briefly reviewed the major eco-environmental measures taken since the beginning of the Project.
    • 基础科学
  • UNIFORMITY THEORY AND ITS APPLICATION ON FRACTAL AND CHAOS
    LUO Chuan-wen
    . 2004, 22(0412): 31-35.
    Abstract ( ) Download PDF ( ) HTML   Knowledge map   Save
    The uniform index theorems in R1 and Rn were proved , which is the base of spatial property studies on random point set, also that of the spatial property studies on chaos. When uniformity theory was used in the studies on chaos, it was found that the uniform indices of double periodic fork were determinate convergent and that of chaos were convergent in mean square. Monopolized line length can be used to differentiate the intensity of chaos, on which the new word "chaometry" was constructed to show the intensity of chaos. The model and serial on chaos can be quantificationally evaluated by chaometry. Chaos can be interpreted as uniformization of track point set.
    • 科研管理
  • RESEARCHES ON HUMAN CAPITAL PRICING: MEASURING MODEL FOR EVALUATING RETURN ON INVESTMENT IN ENTERPRISE TRAINING
    ZHANG Wen-xian;LI Li
    . 2004, 22(0412): 36-41.
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    As an essential human capital investment, training has been rendered important by stockholders, managers as well as the trainees. Early training evaluation theories are mainly qualitative. Now, however, only learning about the changes of the trainees’ opinions, attitudes and behaviors does not satisfy people. Rather, they are more concerned on the financial results of training, say, how much value does the expensive training add to the organization and what does the investment bring along? Many scholars have put forward methods to measure return in training, including the model for measuring return on investment in human capital, utility of training, and a model of ROI based on result of training. This article reviews the literature on evaluating the effectiveness of training and points out some important problems to be studied and solved in the future.
    • 论文
  • STUDIES ON THE ASTRIDE DEVELOPMENT BASED ON DISRUPTIVE TECHNOLOGY INNOVATION
    GAO Jing-le
    . 2004, 22(0412): 41-45.
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    The paper fist discussed on the trend of the research based on disruptive technology innovation and the relationship between the astride development and the disruptive technology innovation. According to the interdynamic principle between technology innovation and management innovation, the paper suggested the enterprise development strategy of disruptive technology innovation should be an overall innovation strategy and flexible strategy, institutional framework should be managed with the project and should be flat in order to realize the astride development based on the disruptive technology innovation.
  • STUDIES ON THE ASTRIDE DEVELOPMENT BASED ON DISRUPTIVE TECHNOLOGY INNOVATION
    GAO Jing-le
    . 2004, 22(0412): 41-45.
    Abstract ( ) Download PDF ( ) HTML   Knowledge map   Save
    The paper fist discussed on the trend of the research based on disruptive technology innovation and the relationship between the astride development and the disruptive technology innovation. According to the interdynamic principle between technology innovation and management innovation, the paper suggested the enterprise development strategy of disruptive technology innovation should be an overall innovation strategy and flexible strategy, institutional framework should be managed with the project and should be flat in order to realize the astride development based on the disruptive technology innovation.
    • 经济
  • RESEARCHES ON MEASURING OF CUSTOMER FAITHFUL DEGREE
    ZHOU Mei-hua
    . 2004, 22(0412): 48-52.
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    On the basis of defining the customer faithful degree, the paper analysed the factors of effecting customer faithful degree. In accordance with the basic rule of target design, a target system has been designed, which can change the abstract, qualitative customer faithful degree into the concrete, quantitative target, then calculate the customer faithful degree. After analyzing the shortcomings of the quantitative ways of customer faithful degree, the paper made further researches on the quantitative way and process of the customer faithful degree.
    • 农业
  • MODERN CIRCULATING SYSTEM’S STRUCTURE OF CHINA’S AGRICULTURAL PRODUCTS
    ZHANG Wen-song;WU Wen-bing
    . 2004, 22(0412): 52-56.
    Abstract ( ) Download PDF ( ) HTML   Knowledge map   Save
    s: First, this paper analyzes the opportunities, challenges, advantages and disadvantages of modern circulating of Chinese agricultural products, then points out the building direction, building target and building deployment, etc. of modern circulating system of agricultural product.

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