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空间数据库数据模型的研究与应用--以巴尔喀什-准噶尔地区为例 陈川1,任小丽1 (1.新疆大学) 摘要:空间数据库是GIS的核心与关键,而数据模型是空间数据库的前提与基础.因此,设计并创建空间数据库数据模型显得尤为重要.研究了基于空间数据库的概念模型,逻辑模型,定义了构成数字地质图各要素间的逻辑关系,重点将ArcGIS的CASE工具与Visio 2003相结合详细构建跨越国境巴尔喀什-准噶尔地区地质图的物理模型,合理地将空间数据和属性数据有效地融合在一起, 完成了面向对象数字地质图数据模型的建立. 关键词:空间数据库; 数据模型; CASE工具; 巴尔喀什-准噶尔; [全文内容正在添加中] ......
Relation between Shot Peening Process and Fatigue Life in the Case of Hardening Steels YASUNORI HARADA1,HARUSHIGE TSUBAKINO1,SHIGEYOSHI HAGA2 (1.Graduate School of Engineering University of Hyogo, Japan;2.Daihatsu Motor Co., Ltd, Japan) 摘要:Nowadays, in the auto industry, the need for improvement of fuel efficiency is getting increased more and more in terms of the global warming, as well......
A new manufacture method of backfill samples in lab-Illustrated with a case studyDU Kun(杜坤)1,2, LI Xi-bing(李夕兵)1,2, YIN Zhi-qiang(殷志强)3(1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China; 2. Hunan Key Laboratory of Resources Exploitation and Hazard Control for Deep Metal Mines, Changsha 410083, China; 3. School of Mineral and Safety, Anhui......
Suitability evaluation for land reclamation in mining area: A case study of Gaoqiao bauxite mineWang Shi-dong1, 2, LIU Chang-hua2, ZHANG He-bing2(1. College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China; 2. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China)Abstract:Suitability evaluation plays......
is a kind of geological disaster in rock excavation of high stress areas. To evaluate intensity of rock burst, the maximum shear stress, uniaxial compressive strength, uniaxial tensile strength and rock... neural network; rock burst prediction; rock excavation 1 Introduction Rock burst refers to the rock’s brittle failure accompanied with the phenomenon of peeling, cracking and even throwing. The common......
Energy performance assessment on central air-conditioning system of commercial building: A case study in ChinaZHOU Xuan(周璇)1, 2, LIAN Si-zhen(练斯甄)1, 2, YAN Jun-wei(闫军威)1, 2, KANG Ying-zi(康英姿)1, 2(1. School of Mechanical & Automotive Engineering, South China University of Technology,Guangzhou 510640, China;2. City Air-conditioning Energy Conservation and Control Project Technology Research......
Comparative Case Study on Adhesion of Three Common Sizing Agents to Cotton and Polyester Yarns李颖1,2,CHENG Fei1,周密1,朱谱新11. College of Biomass Science and Engineering, Sichuan University2. School of Textile Engineering, Chengdu Textile College摘 要:The adhesion between warp sizing and fiber was systematically studied by using the roving method.Cotton roving......
J. Cent. South Univ. (2019) 26: 1735-1746 DOI: https://doi.org/10.1007/s11771-019-4129-0 Tunnel face reliability analysis using active learning Kriging model―Case of a two-layer soils LI Tian-zheng...; Kriging model; active learning function; failure probability Cite this article as: LI Tian-zheng, DIAS Daniel. Tunnel face reliability analysis using active learning Kriging model―Case of a two-layer soils......
performance of SVM technique in rear-end crash potential prediction analysis. Key words: freeway rear-end crash; crash potential prediction; crash precursors; case control strategy; support vector machine 1... variables and the classifier. ABDEL-ATY et al [6] developed a case-control logistic regression model to examine crash and corresponding non-crash traffic flow features, thus the external factors......
J. Cent. South Univ. (2020) 27: 288-310 DOI: https://doi.org/10.1007/s11771-020-4296-z Order of sphalerite and galena precipitation: A case study from lead-zinc deposits in southwest China ZHANG...; thermodynamic phase diagram; mineral zoning; lead and zinc deposit; southwest of China Cite this article as: ZHANG Yan, HAN Run-sheng, WEI Ping-tang. Order of sphalerite and galena precipitation: A case study......