• 제목/요약/키워드: Geographic Data

검색결과 2,495건 처리시간 0.035초

Development of an Integrated DB Management System for GIS-Based Client/Server Data Sharing in Climate and Environment Fields (GIS기반의 기후·환경 분야 자료 공유를 위한 Client/Server 방식의 통합DB 관리시스템 개발)

  • Choi, Yong-Kuk;Kim, Kye-Hyun;Lee, Chol-Young
    • Journal of the Korean Association of Geographic Information Studies
    • /
    • 제17권2호
    • /
    • pp.32-43
    • /
    • 2014
  • To identify major causes of the global environment changes arising from extreme and unusual weather patterns occurring these days, and to foresee future environmental changes, it is highly important to shed light on the correlation between climate changes and global environment system. To investigate the correlation between climate changes and global environment system, it calls for establishing an integrated climate-environment DB for analyzing comparatively the data on climatic changes and global environment system. In the preceding studies, we researched an XML-based integrated climate-environment DB and developed a management system for the DB. However, the existing integrated climate-environment DB, designed and installed only for individual PCs, does not allow multiple users 'simultaneous access. Accordingly, it fails to systematically update and sharing data which is being generated continuingly. Hence, this study aims to develop an easy-to-use GIS-based integrated DB management system by improving the existing integrated climate-environment DB through the adoption of the client/server model. For this, this study collected and analyzed climate and environment data prior to designing and building a DBMS-based integrated DB. In addition, in order for multidisciplinary researchers to easily get access and apply the integrated DB, this study designed and developed a GIS-based integrated DB management system using a client/server model which facilitates connections with multiple PCs. The GIS-based integrated climate-environment DB management system makes it easier to efficiently manage and locate scattered climate-environment data. It is also expected that the DB system will bring the effects in saving time and cost by avoiding the overlapping generation of data in the areas of integrated climate-environment research.

A Study for Model Curricula Development, in GIS(Geographic Information Science) (GIS 교육과정 개발에 관한 연구)

  • 성효현
    • Spatial Information Research
    • /
    • 제1권1호
    • /
    • pp.73-87
    • /
    • 1993
  • This paper reviews the topic of GIS, the academic setting of GIS, GIS model curricula and the possibility GIS education in Korea. The topics which might be included in a science of geographic information consist of data collection and measurement, data capture, spatial statistics, data modeling and theories of spatial data, data structures, algorithms and processes, display, analytical tools, institutional, managerial and ethical issues. The problems in teaching a course on GIS in higher education are reviewed. Because of their technological, integrative, and rapidly changing nature, GIS pose major challenges to their education system which it is ill equipped to meet. In higher education a number of initiatives have been taken to provide education about and training with, GIS. The possible GIS curricula are suggested. These curricula are divided into 3 major sections, relating GIS context, technical issues and application issues. The prospects of GIS appears lo depend largely upon the future cooperation of academia, government, and industry

  • PDF

Analysis of Geographic Network Structure by Business Relationship between Companies of the Korean Automobile Industry (한국 자동차산업의 기업간 거래관계에 의한 지리적 네트워크 구조 분석)

  • KIM, Hye-Lim;MOON, Tae-Heon
    • Journal of the Korean Association of Geographic Information Studies
    • /
    • 제24권3호
    • /
    • pp.58-72
    • /
    • 2021
  • In July 2021, UNCTAD classified Korea as a developed country. After the Korean War in the 1950s, economic development was promoted despite difficult conditions, resulting in epoch-making national growth. However, in order to respond to the rapidly changing global economy, it is necessary to continuously study the domestic industrial ecosystem and prepare strategies for continuous change and growth. This study analyzed the industrial ecosystem of the automobile industry where it is possible to obtain transaction data between companies by applying complexity spatial network analysis. For data, 295 corporate data(node data) and 607 transaction data (link data) were used. As a result of checking the spatial distribution by geocoding the address of the company, the automobile industry-related companies were concentrated in the Seoul metropolitan area and the Southeastern(Dongnam) region. The node importance was measured through degree centrality, betweenness centrality, closeness centrality, and eigenvector centrality, and the network structure was confirmed by identifying density, distance, community detection, and assortativity and disassortivity. As a result, among the automakers, Hyundai Motor, Kia Motors, and GM Korea were included in the top 15 in 4 indicators of node centrality. In terms of company location, companies located in the Seoul metropolitan area were included in the top 15. In terms of company size, most of the large companies with more than 1,000 employees were included in the top 15 for degree centrality and betweenness centrality. Regarding closeness centrality and eigenvector centrality, most of the companies with 500 or less employees were included in the top 15, except for automakers. In the structure of the network, the density was 0.01390522 and the average distance was 3.422481. As a result of community detection using the fast greedy algorithm, 11 communities were finally derived.

A Study on the Category of Factors for the Landslide Risk Assessment: Focused on Feature Classification of the Digital Map(Ver 2.0) (산사태 위험도 항목 분류에 관한 연구 -수치지도(Ver 2.0) 지형지물 분류체계를 중심으로-)

  • Kim, Jung-Ok;Lee, Jeong-Ho;Kim, Yong-Il
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
    • /
    • 한국측량학회 2007년도 춘계학술발표회 논문집
    • /
    • pp.371-374
    • /
    • 2007
  • For development of landslide risk assessment techniques using GIS(Geographic Information System), this study classifies the category of socioeconomic factors. The landslide quantitative risk assessment performs first prediction of flow trajectory and runout distance of debris flow over natural terrain. Based on those results, it can be analyzed the factors of socioeconomic which are directly related to the magnitude of risk due to landslide hazards. Those risk assessment results can deliver factual damage situation prediction to policy making for the landslide damage mitigation. Therefore, this study is based on feature classification of the digital map ver. 2.0 provided by the National Geographic Information Institute. The category of factors can be used as useful data in preventing landslide.

  • PDF

Evaluation of Micro EV's Spreading to Local Community by Multinomial Logit Model

  • Seki, Yoichi;Manrique, Luis C.;Amagai, Kenji;Takarada, Takayuki
    • Industrial Engineering and Management Systems
    • /
    • 제11권2호
    • /
    • pp.148-154
    • /
    • 2012
  • Micro Electric Vehicles are considered as a solution for reducing $CO_2$ emissions, however, it is difficult to evaluate its impact in a local community when it has been introduced. In this study, we evaluated how to spread the Micro EV within the community, using the utility derived from a multinomial logit model, and analyze the effect on $CO_2$ emissions. The householder's utility model is based on an investigation about Kiryu citizen's activities of shopping, transportation methods, etc. Using the geographic information system, we get the distances of each householder and the stores, and estimate a multinomial logit model about the combination choices of shopping stores and transportation method.

An Application of GIS to Water Quality Management (GIS를 이용한 하천수질관리)

  • Yang, Hyung-Jae;Lee, Yoo-Won;Kim, Min
    • Journal of Environmental Impact Assessment
    • /
    • 제3권2호
    • /
    • pp.25-32
    • /
    • 1994
  • This study was carried out as the Anyang creek water quality management using Geographic Information System (GIS) is the purpose of this pilot project to apply a GIS to environmental management field. Analysis of water quality data has been investigated using GIS with modeling of water quality management for the Anyang creek. The results of this study are summarized as follows: 1. The concentration of Mercury in sediment was increased rapidly nearby A26(Nightsoil Treatment Plant) and maximum was showed at A18 (Imgok bridge). Cadmium was increased rapidly at A35(Chulsan bridge). 2. River water quality management using visible computer system as GIS is effective to make decision for water quality management plan and database of environmental factors should be completed before applying GIS. 3. When water pollution accident is occurred in the river water system, pollutant source can be traced and analysed systematically using GIS to manage pollutants discharged into the river water system.

  • PDF

A Study on the Specification of Digital Map Ver. 2.0 Generalization (수치지도 Ver. 2.0 일반화스펙에 관한 연구)

  • Park Kyeong-Sik;Jung Sung-Heuk;Choi Seok-Keun;Lee Jae-Kee
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
    • /
    • 한국측량학회 2006년도 춘계학술발표회 논문집
    • /
    • pp.405-410
    • /
    • 2006
  • The digital map version 2.0 is national base map which is used for frame work data, paper map making as well as geographic information system. National Geographic Institude has been research to make small scale digital map by using large scale digital map. NGI made from 25 1/5,000 digital maps to one 1/25,000 digital map ver 2.0 with map generalization system in 2003. However, they could not make 1/10,000 and l/50,000 digital map version 2.0 because of There is no portrayal on the scale 1/10,000 and 1/50,000 digital map in the existing regulations. therefore. We create the specification of the digital map on scale in order to make small scale digital map version 2.0 such as 1/10,000 and 1/50,000 scale.

  • PDF

A Study on the Optimal Allocation for Intelligence Assets Using MGIS and Genetic Algorithm (MGIS 및 유전자 알고리즘을 활용한 정보자산 최적배치에 관한 연구)

  • Kim, Younghwa;Kim, Suhwan
    • Journal of Korean Institute of Industrial Engineers
    • /
    • 제41권4호
    • /
    • pp.396-407
    • /
    • 2015
  • The literature about intelligence assets allocation focused on mainly single or partial assets such as TOD and GSR. Thus, it is limited in application to the actual environment of operating various assets. In addition, field units have generally vulnerabilities because of depending on qualitative analysis. Therefore, we need a methodology to ensure the validity and reliability of intelligence asset allocation. In this study, detection probability was generated using digital geospatial data in MGIS (Military Geographic Information System) and simulation logic of BCTP (Battle Commander Training Programs) in the R.O.K army. Then, the optimal allocation mathematical model applied concept of simultaneous integrated management, which was developed based on the partial set covering model. Also, the proposed GA (Genetic Algorithm) provided superior results compared to the mathematical model. Consequently, this study will support effectively decision making by the commander by offering the best alternatives for optimal allocation within a reasonable time.

Development of Optimal Real Estate Decision Support System by Geographic Information on Real Estate Appraisal - Using Internet and GIS - (부동산 감정평가에 있어 공간정보를 활용한 최적의 부동산 의사결정지원 시스템 개발 - 인터넷과 GIS를 활용하여 -)

  • Kim Han-Su;Na Sang-Youp
    • Journal of the Korean housing association
    • /
    • 제15권4호
    • /
    • pp.45-54
    • /
    • 2004
  • This study systematized synthetically to use internet GIS and real estate appraisal method in computing system for the real estate decision. First, indicated the method of using GIS and databases to appraise the real estate by using the cost approach. Second, used the artificial neural network to predict the change of land prices and the artificial neural network convinced us that it indicates easily the result of land prices without complicated processes. Third, examined land prices using the artificial neural network but there is limits for the land price prediction because of difficult data gathering. also, this study may heighten information levels of the real estate field according to 21th century information level if use actively a internet, information users who should pay much moneys in existent real estate decisions may can approach easily.