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Ontology-based analysis of multi-scale modeling of geographical features

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Science china(Technological Sciences) 2006年第z2期49卷 121-131页

作者： wang yanhui, li xiaojuan & {3. huili key laboratory of Three-Dimensional information acquisition and application, Ministry of Education, capital normal University, beijing 10003.,{13. beijing key laboratory of Resource Environment and GIS, capital normal University, beijing 10003.,{13. capital normal Univ Minist Educ Key Lab Dimens Informat Acquisit & Applicat 3 Beijing 100037 Peoples R China capital normal Univ Beijing Key Lab Resource Environm Beijing 100037 Peoples R China capital normal Univ GIS Beijing 100037 Peoples R China

As multi-scale databases based on scale series of map data are built, conceptual models are needed to define proper multi-scale representation formulas and to extract model entities and the relationships among them. However, the results of multi-scale conceptual abstraction schema may differ, according to which cognition, abstraction and application views are utilized, which presents an obvious obstacle to the reuse and sharing of spatial data. To facilitate the design of unified, common and objective abstract schema views for multi-scale spatial databases, this paper proposes an ontology-based analysis method for the multi-scale modeling of geographical features. It includes a three-layer ontology model, which serves as the framework for common multi-scale abstraction schema; an explanation of formulary abstractions accompanied by definitions of entities and their relationships at the same scale, as well as different scales,which are meant to provide strong feasibility, expansibility and speciality functions; and a case in point involving multi-scale representations of road features, to verify the method's feasibility.

关键词： multi-scale representation, ontology-based analysis, multi-scale data modeling, hierarchical ontology.

Test of magnetic susceptibility and grain-size age models of loess

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Progress in Natural Science:Materials International 2007年第11期17卷 1312-1317页

作者： Chen Yimeng1,2,3. Feng Zhaodong4 and gong huili1,2(1. moe and {3. laboratory of Resources Environment and GIS of beijing, beijing 10003., china 2. {3. laboratory of 3. information acquisition and application, The {13. normal University, beijing 10003., china 3. Department of Economics & Management of Huizhou University, Huizhou 516007, china 4. {3. laboratory of Western china’s Environmental Systems, Ministry of Education, Lanzhou University, Lanzhou 73.000, china) moe and key laboratory of Resources Environment and GIS of {3. Beijing 100037 China key laboratory of 3. information {3. and application The Capital Normal University Beijing 100037 China Department of Economics & Management of Huizhou University Huizhou 516007 China key laboratory of Western china’s Environmental Systems Ministry of Education Lanzhou University Lanzhou 730000 China

Ages of the stratigraphic boundary MIS1/2 and MIS3.4 of the Yuanbu loess section in linxia are used as the basis of the nodal control age. The age of MIS1/2 and MIS3.4 are obtained from the latest international research result—the climatic events recorded in the stalagmite in the Hulu Cave in Nanjing, that MIS1/2 is 11.5 kaB.P. and MIS3.4 is 59.8 kaB.P.. The ages of the two climatic events contain three nodal age control models (Model 1: 0 kaB.P.—59.8 kaB.P.; Model 2: 0 kaB.P.—11.5 kaB.P. and 11.5 kaB.P.—59.8 kaB.P.; Model 3. 11.5 kaB.P.—59.8 kaB.P.), which are used as the nodal control age separately. The deposition times of various stratigraphic horizons are calculated by using the magnetic susceptibility age model and grain-size age model, and then compared with each other. In addition, the AMS14C age, OSL age and the ages of YD and H events are compared with the ages of the corresponding horizons calculated by the three models of nodal control ages. From the analyses of lithologic characters and climatic stages it has been found that both the magnetic susceptibility age model and the grain-size age model have some defects. Because the accurate control ages are selected as the nodal points of the glacial period or interglacial period, the stratigraphic deposition times determined by the high resolution of magnetic susceptibility age model and grain-size age model approximate to the actual ages. As for the relative accuracy of the two age models, the magnetic susceptibility age model is more accurate than the grain-size age model.

关键词： loess nodal control age magnetic susceptibility age model grain-size age model test

Research on the damage of the Great Wall of Ming Dynasty in beijing by remote sensing

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Science china(Technological Sciences) 2008年第S1期51卷 195-202页

作者： li xiaojuan,gong {3.,ZHANG Ou,ZHANG WeiGuang & SUN YongHua The key Lab of 3. information acquisition and application,moe,the key Lab of beijing Resource Envi-ronment and GIS,and College of Resource Environment & Tourism,capital normal University,beijing 10003.,china capital normal Univ Key Lab Informat Acquisit & Applicat MOE Key Lab Beijing Resource Environm Beijing 100037 Peoples R China

Using aerial photos and high resolution satellite images of the year of 2004,this paper establishes remote sensing interpretation marks of the Great Wall of Ming Dynasty's damaged levels. Based on field survey and remote sensing survey in 1984,we analyzed present situation and changing characteristics being of the Great Wall of Ming Dynasty in beijing. The results show that about 7.02% of the wall is well-preserved (about 25861 m); 3..5% of the wall is slightly or moderately dam-aged (about 115989 m); 61.5% of the wall is badly damaged (about 2263.9 m). This paper analyzes the dynamic change of the Great Wall of Ming Dynasty. It shows that the damaged situation of the Great Wall of Ming Dynasty in beijing is serious. From 1984 to 2004,the well-preserved wall is decreased by 3.206 m (decreased by 56%); badly damaged wall increased by 51207 m (increased by 67%). Finally,this paper analyzes the influence factors of damaging Great Wall. The conclusion is as follows: The damaged Great Wall is generally near the roads and villages,small slope,and easily arriving land.

关键词： the Great Wall of Ming Dynasty remote sensing interpreting damage dynamic change spatial analysis

Quantitative exploration of the mechanisms behind the urban thermal environment in beijing

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Progress in Natural Science:Materials International 2009年第12期19卷 1757-1763页

作者： Dan Meng,xiaojuan li~*,Wenji Zhao,huili {3. key laboratory of 3. information acquisition and application,Ministry of Education,key laboratory of Resource,Environment and GIS in beijing,College of Resources Environment and Tourism,capital {13. University,beijing 100048,china [a]key laboratory of 3. information {3. and application Ministry of Education Key Laboratory of Resource Environment and GIS in Beijing College of Resources Environment and Tourism Capital Normal University Beijing 100048 China

The driving mechanism behind the formation of urban thermal environments is the result of a combination of *** was chosen as the study area,and the technique of principal component analysis(PCA) was used.A spatial regression method was also applied for quantitative explanation of the thermal *** Landsat thematic mapper images were used to quantify potential causing *** the eigenvalues of each factor and its relationship with land surface temperature,the first three principal components(PCs) are regarded as the main causative factors explaining the mechanism as independent *** first three PCs mainly reflect urban construction,road density and the normalized difference vegetation index(NDVI),*** least squares,spatial lag and spatial error regression models were established separately for the relationships between the first three PCs and land surface temperature(LST).In the two spatial regression models,z-statistics for both the spatial lag parameter(ρ) and spatial residual parameter(λ) are significant,indicating the necessity of using spatial regression to replace the OLS regression model,as well as indicating that the spatial error regression model is superior to the spatial lag regression ***,the normalized difference built-up index(NDBI) and road density are the most significant positive contributions to LST.

关键词： Urban thermal environment Drive mechanism Spatial regression beijing

A study on determining the location of groundwater divide using a mathematical morphology method

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Science china(Technological Sciences) 2006年第z2期49卷 141-148页

作者： PAN Yun, gong huili, DUAN Fuzhou & HU Zhuowei key {3. of 3. information acquisition and application, Ministry of Education, capital normal University, beijing 10003., china key {3. of Resource Environment and GIS of {13., capital normal University, beijing 10003., china capital normal Univ Minist Educ Key Lab D Informat Acquisit & Applicat 3 Beijing 100037 Peoples R China capital normal Univ Key Lab Resource Environm Beijing 100037 Peoples R China capital normal Univ GIS Beijing Beijing 100037 Peoples R China

Placement of a groundwater divide indicates sink areas and spatial distribution, knowledge of which helps in the mapping of regional aquifer properties and the management of groundwater resources. By applying mathematical morphology to a conceptual model of a watershed and characteristic erosion and dilation operations, this paper proposes a structuring element with which to extract the shape and location of groundwater divide. With due consideration to watershed linearity, a structuring element with three origins is designed to connect watershed points. After erosion, closing, and dilation operations, the groundwater divide is determined; the results indicate this method's feasibility and accuracy.

关键词： groundwater divide, mathematical morphology, structuring element.

A technique on automatic land-use database reconstruction based on scanning land-use map

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Science china(Technological Sciences) 2006年第z2期49卷 57-63页

作者： li xiaojuan, gong {3., YIN lianwang, SUN Yonghua, YANG lingli & wang Yanggang key laboratory of 3. information acquisition and {13., Ministry of Education, capital normal University, beijing 10003., china key laboratory of Resource Environment and GIS of beijing, capital normal University, beijing 10003., china capital normal Univ Minist Educ Key Lab D Informat Acquisit & Applicat 3 Beijing 100037 Peoples R China capital normal Univ Key Lab Resource Environm Beijing 100037 Peoples R China capital normal Univ GIS Beijing Beijing 100037 Peoples R China

Although a land-cover database is very important to national land use including urban planning and land-use management, it is very laborious and time-consuming to build through digitization of paper land-use maps (1:10000) and data input by hand. Here we propose a new, high-level, automatic technique to build a land-use database, which has proved useful and practical in building a land-use database of Baotou City.

关键词： land-use map vectonzation automatic building of land-use database.

Study on movement inertia in the Earth multi-body system

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Science china(Technological Sciences) 2006年第z2期49卷 70-79页

作者： CHEN Xiaofei, BI Siwen & gong huili key {3. of 3. information acquisition and application, Ministry of Education, capital normal University, beijing 10003., china National key {3. of Remote Sensing Science, Institute of Remote Sensing applications (IRSA), Chinese Academy of Sciences, beijing 100101, china capital normal Univ Minist Educ Key Lab D Informat Acquisit & Applicat Beijing 100037 Peoples R China Chinese Acad Sci Inst Remote Sensing Applicat Natl Key Lab Remote Sensing Sci Beijing 100101 Peoples R China

This paper summarizes the first movement and mass centre of stratum-block movement inertia in the Earth multi-body system and introduces its application. It also elaborates the moment of inertia and the products of inertia: the inertia dyadic transformation of reference system and the parallel axis theorem of stratum-block movement inertia of the Earth multi-body system. It provides an academic foundation for research on the dynamic model of Earth multi-body system.

关键词： Earth multi-body system, stratum block, movement inertia.

Earth system multi-body restriction dynamics model research

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Science china(Technological Sciences) 2006年第z2期49卷 80-87页

作者： ZHANG Qingxian, BI Siwen& gong huili key {3. of Three-Dimensional information acquisition and application, Ministry of Education, capital normal University, beijing 10003., china National key {3. of Remote Sensing Science, Institute of Remote Sensing applications of Chinese Academy of Sciences, beijing 100101, china capital normal Univ Minist Educ Key Lab Dimens Informat Acquisit & Applicat 3 Beijing 100037 Peoples R China Chinese Acad Sci Inst Remote Sensing Applicat Natl Key Lab Remote Sensing Sci Beijing 100101 Peoples R China

Research provides a theoretical basis for an Earth system multi-body mechanics model and its dynamics, including the Earth system multi-body restriction function and its power, Earth system multi-body restriction under decreasing generalized velocity and decreasing partial palstance, the Earth system multi-body decreasing generalized force, a moving mechanics function, and the Earth system multi-body restriction's wattful and wattless forces.

关键词： Earth system, multi-body restriction, dynamics model.

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水文时间序列分析方法研究进展

地球信息科学学报 2024年第4期26卷 927-945页

作者：李路宫辉力郭琳朱琳陈蓓蓓首都师范大学水资源安全北京实验室北京100048 首都师范大学资源环境与地理信息系统北京市重点实验室北京100048 首都师范大学城市环境过程与数字模拟国家重点实验室培育基地北京100048 首都师范大学三维信息获取与应用教育部重点实验室北京100048 首都师范大学地面沉降机理与防控教育部重点实验室北京100048

水文时间序列分析领域的发展对于有效管理和利用水资源至关重要。本文基于WoS核心合集数据库和CNKI数据库,采用文献计量学方法和CiteSpace软件,揭示国内外水文时间序列分析领域的发展脉络、研究热点及发展方向。首先从水文时间序列的随... 详细信息

水文时间序列分析领域的发展对于有效管理和利用水资源至关重要。本文基于WoS核心合集数据库和CNKI数据库,采用文献计量学方法和CiteSpace软件,揭示国内外水文时间序列分析领域的发展脉络、研究热点及发展方向。首先从水文时间序列的随机性、非线性、不确定性等出发,结合机器学习、神经网络等新兴方法,将水文时间序列分析领域的相关进展分为6个方面。然后,对各方面开展了详细介绍,并与传统方法作对比,总结了传统方法的缺陷;最后,指出提高水文时间序列分析结果准确性的方向,主要包括:(1)在时空尺度上进行建模,并融合多元数据进行分析;(2)将物理机制融入机器学习模型,提高模型的可解释性和泛化能力;(3.在研究过程中考虑气候变化(极端天气事件)和水文过程的耦合;(4)将多个复杂特性综合进行研究,并提高每个复杂特性的研究水平。通过揭示国内外水文时间序列分析领域的发展脉络、研究热点及发展方向,我们能够更好地理解和应对气候变化、极端天气事件以及人类活动对水资源的影响,提高我们对水文过程的认识,为水资源规划、水灾风险管理和可持续发展提供科学依据。

关键词：水文时间序列分析 CiteSpace 机器学习非线性不确定性非平稳性耦合