检索结果-南通市图书馆

Study on thermal infrared remote sensing of Yarlung Zangbo River and Bangong Co-Nujiang River suture belt in Qinghai-Tibet Plateau

在线全文

学校读者我要写书评

暂无评论

Science china(Technological Sciences) 2006年第z2期49卷 108-113页

作者： BI Siwen, YAN Hao & WANG Changyao State key laboratory of Remote Sensing Sciences, Institute of Remote Sensing application, Chinese Academy of Sciences, beijing 100101, china key laboratory of three-dimensional information acquisition and application, ministry of education, capital normal university, beijing 10003., china Chinese Acad Sci Inst Remote Sensing Applicat State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China capital normal Univ Minist Educ Key Lab Dimens Informat Acquisit & Applicat Beijing 100037 Peoples R China

The area change of heat abnormity is not in accordance with conclusions of former thermal infrared remote sensing studies of the Qinghai-Tibet Plateau, which were that the temperature of Yarlung Zangbo River suture belt of the southern Plateau is high and the northern temperature is low. The study result in this paper shows that the highest temperature is found in the Bangong Co-Nujiang River suture belt, the Yarlung Zangbo River suture belt temperature is the second highest, and the northern Tibet temperature is the lowest. The study demonstration area was the suture belt areas of the Yarlung Zangbo River and the Bangong Co-Nujiang River in the Qinghai-Tibet Plateau, where the land temperature of the Qinghai-Tibet Plateau and the bore temperature of field land surface were measured and the emissivity of land surface was calculated. In addition, the authors explore the mechanism of the relationship between thermal infrared remote sensing and constructing thermodynamics and reach four new conclusions about the thermodynamics of the Tibet Plateau.

关键词： Qinghai-Tibet Plateau, Yarlung Zangbo River-Bangong Co-Nujiang River, suture belt, thermal infrared remote sensing, heat abnormity.

Earth system multi-body restriction dynamics model research

在线全文

学校读者我要写书评

暂无评论

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

作者： ZHANG Qingxian, BI Siwen& GONG Huili key laboratory of three-dimensional information acquisition and application, ministry of education, capital normal university, beijing 10003., china National key laboratory 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.

An Earth multi-body system elasticity and plasticity dynamics model

在线全文

学校读者我要写书评

暂无评论

Science china(Technological Sciences) 2006年第z2期49卷 23-29页

作者： ZHANG Qingxian, BI Siwen & GONG Huili education ministry key laboratory of three-dimensional information Extraction and application, capital normal university, beijing 10003., china State key laboratory of Remote Sensing Science, IRSA, Chinese Academy of Sciences, beijing 100101, china capital normal Univ Educ Minist Key Lab Dimens Informat Extract & App Beijing 100037 Peoples R China Chinese Acad Sci IRSA State Key Lab Remote Sensing Sci Beijing 100101 Peoples R China

Research on the elasticity and plasticity dynamics of the Earth multi-body system, including the Earth multi-body system stratum-block's equivalent inertia force system and generalized inertia force, the Earth multi-body system stratum-block's equivalent inertia force system expressed with partial velocity and partial palstance, and Earth multi-body system generalized inertia force expressed with partial velocity and partial palstance. This research provides a theoretical foundation for further investigation of Earth multi-body dynamics.

关键词： Earth multi-body system, equivalent inertia force system, generalized inertia force, elasticity and plasticity, dynamics model.

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

在线全文

学校读者我要写书评

暂无评论

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 laboratory of 3D information acquisition and application, 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

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.

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

在线全文

学校读者我要写书评

暂无评论

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 Gong key laboratory of 3D information acquisition 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 [a]key laboratory of 3D information acquisition 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 technique on automatic land-use database reconstruction based on scanning land-use map

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

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

作者： LI Xiaojuan, GONG Huili, YIN Lianwang, SUN Yonghua, YANG Lingli & WANG Yanggang key laboratory of 3D information acquisition and application, 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.

On multi-scale representations of geographic features

在线全文

学校读者我要写书评

暂无评论

Science china(Technological Sciences) 2006年第z2期49卷 39-47页

作者： WANG Yanhui, LI Xiaojuan & GONG Huili key laboratory of 3D information acquisition and application, MOE, capital normal university, beijing 10003., china key Lab laboratory of Resource Environment and GIS of beijing, capital normal university, beijing 10003., china capital normal Univ MOE Key Lab D Informat Acquisit & Applicat 3 Beijing 100037 Peoples R China capital normal Univ Key Lab Lab Resource Environm Beijing 100037 Peoples R China capital normal Univ GIS Beijing Beijing 100037 Peoples R China

This paper contains a review of the development of research on multiple representations compiled from Geographic information Systems (GIS), including data structure, formalization and storage, and intelligent zoom. A summary is also included of the problems of interconnectivity, consistency maintenance, dynamic query and coexisting updates, as well as a research review of multi-scale databases and related studies. Finally,research directions and foci are proposed for the future design and implementation of multi-scale GIS.

关键词： multi-scale representation, multi-scale database, interconnectivity, consistency maintenance.

Study on movement inertia in the Earth multi-body system

在线全文

学校读者我要写书评

暂无评论

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

作者： CHEN Xiaofei, BI Siwen & GONG Huili key laboratory of 3D information acquisition and application, ministry of education, capital normal university, beijing 10003., china National key laboratory 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.

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

在线全文

学校读者我要写书评

暂无评论

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 key laboratory of Resources Environment and GIS of beijing, beijing 10003., china 2. key laboratory of 3D information acquisition and application, The capital normal university, beijing 10003., china 3. Department of Economics & Management of Huizhou university, Huizhou 516007, china 4. key laboratory of Western china’s Environmental Systems, ministry of education, Lanzhou university, Lanzhou 730000, china) MOE and key laboratory of Resources Environment and GIS of beijing Beijing 100037 China key laboratory of 3D information acquisition 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