• Title/Summary/Keyword: Geography and GIS

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Geovisualization of Migration Statistics Using Flow Mapping Based on Web GIS (Web GIS 기반 유선도 작성을 통한 인구이동통계의 지리적 시각화)

  • Kim, Kam-Young;Lee, Sang-Il
    • Journal of the Korean Geographical Society
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    • v.47 no.2
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    • pp.268-281
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    • 2012
  • In spite of the usefulness of migration statistics in spatially understanding social processes and identifying social effects of spatial processes, services and analyses of the statistics have been restricted due to the complexity of their data structure. In addition, flow mapping functionality which is a useful method to explore and visualize the migration statistics has yet to be fully represented in modern GIS applications. Given this, the purpose of this research is to demonstrate the possibility of flow mapping and the exploratory spatial analysis of the migration statistics in a Web GIS environment. For this, the characteristics of the statistics were examined from database, GIS, and cartographic perspectives. Then, O-D structure of the migration statistics was converted to spatial data appropriate to f low mapping based on the characteristics. The interface of Web GIS is specialized the migration statistics and provides exploratory visualization by allowing dynamic interactions such as spatial focusing and attribute filtering.

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The Development of Computer Map and GIS (컴퓨터 지도의 발달과 GIS)

  • Kim, Woo-Gwan;Jeon, Young-Gweon
    • Journal of the Korean association of regional geographers
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    • v.1 no.1
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    • pp.61-68
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    • 1995
  • The writers study on the development and the prospect of computer map based on the most recent computer mapping technical aspects. We also study domestic prospect of computer map in connection with the present condition of domestic GIS. The main results are as follows: (1) Computer map has rapidly developed in spite of its short history. We expect that computer map will be improved more in the future owing to the development of computer hardware and software. Most mapping processes will be possible sooner or later owing to Artificial Intelligence(AI) and more improved scanner without human effort. (2) Computer map can be used for various industrial fields and its development can give a great help for technical advance in correlated industries. (3) Computer map has really developed in the country since 1980, when GIS was introduced. Especially, government planned to digitalize all the basic topographical maps covering the whole country between 1996-1998. We think that there is an epoch-making change in the development history of computer map in the future. (4) The development of GIS is closely connected with one of computer map, but the recent technical levels of GIS is not perfect. So there is an urgent need for technical supplement to produce good computer maps. (5) The government had better construct GIS database in order to cut down expenses derived from overlapping input of data by individual users and there is a need for data standard.

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Environmental Information Systems in Russian Federation (러시아의 환경정보체계)

  • Tikunov, Vladimir S.
    • Journal of Environmental Impact Assessment
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    • v.3 no.2
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    • pp.3-7
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    • 1994
  • The paper discusses the status of development of the geographic information systems (GIS) in Russia. A brief descriptions of GIS activities in governmental organizations, universities, Academy of Sciences and private sector of economy are included. The principal trends of the ecological GIS development are outlined.

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An Analysis on the Development of Tourism Geographic Information System (관광지리정보시스뎀 구축 방안에 관한 연구)

  • Kim, Si-Joong
    • Journal of the Korean association of regional geographers
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    • v.11 no.3
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    • pp.395-409
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    • 2005
  • Nowadays, it is required that GIS(Geography Information System) should be introduced into tourism field. Therefore, this study suggests several directions as to how well GIS can be used and applied into tourism area. Several directions were made based on the previous literature review and the analyses of TGIS(Tourism Geography Information System) including domestic and foreign case studies. Overall, the research found that it were necessary for five main points to make a development of TGIS. First, TGIS database should be closely connected with Tourism Resources Information System database. Second, as one of an institutional devices, systems for supporting were needed to be prepared for businessmen and integrated information function. Third, as an administrative countermeasure, a mediation committee between the department and bureaus, Tourism Geography Information Circulation Management and Local Tourism Information Center should be established and operated Fourth, the methods for financial resource, which amplify the investment funds, should be established. Finally, universities must introduce a large number of specialists of TGIS by setting up the department of tourism geography information newly.

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Implementation of Association Rules Creation System from GML Documents (GML 문서에서 연관규칙 생성 시스템 구현)

  • Kim, Eui-Chan;Hwang, Byung-Yeon
    • Journal of Korea Spatial Information System Society
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    • v.8 no.1 s.16
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    • pp.27-35
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    • 2006
  • As the increasing interest about geographical information, such researches and applied fields become wide. OGC(Open GIS Consortium) developed GML(Geography Markup Language) which is adopted XML(extensible Markup Language) in GIS field. In various applied field, GML is used and studied continuously. This paper try to find out the meaningful rules using Apriori algorithm from GML documents, one of the data mining techniques which is studied based on existing XML documents There are two ways to find out the rules. One is the way that find out the related rules as extracting the content in GML documents, the other find out the related rules based on used tags and attributes. This paper describes searching the rules through two ways and shows the system adopted two ways.

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DISTRIBUTED WEB GIS SERVICE BASED ON XML AND INTEROPERABILITY

  • Kim, Do-Hyun
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.145-150
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    • 2002
  • Web GIS (Geographic Information Systems) service systems provide the various GIS services of analyzing and displaying the spatial data with friendly user-interface. These services are expanding the business domain and many users want to access the distributed various spatial data. But, it is difficult to access diverse data sources because of different spatial data format and data access methods. In this paper, we design and implement web GIS services based on the inter-operability and GML (Geography Markup Language) of OGC(Open GIS Consortium) in web distributed environment. Inter-operability provides unique accessing method to distributed data sources based on OLE DB technology of Microsoft. In addition, GML support web GIS services based on XML. We design these GIS services as components using UML (Unified Modeling Language) of an object-oriented modeling language for specifying, visualizing, constructing, and documenting the artifacts of software system. In addition, they also were developed in object-oriented computing environment, and it provides the interoperability, language-independent, easy developing environment as well as re-usability.

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Design and Implementation of Intermediate Code for Mobile GIS (모바일GIS를 위한 중간코드의 설계 및 구현)

  • 신홍섭;오세만
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.04c
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    • pp.154-156
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    • 2003
  • 모바일 기술의 발달로 인해 모바일 장치를 위한 다양한 지원 모델과 응용 프로그램들이 개발되고 있다. GIS분야에서도 모바일 기술이 접목되어 모바일GIS가 등장하게 되었으며, 모바일GIS를 이용한 다양한 응용 프로그램들이 서비스되고 있다. 기존의 모바일GIS는 국립지리원에서 제공하는 DXF형식의 국가기본수치지도를 원시 데이터로 사용하였으나, 최근에는 모바일GIS에 XML(extensible Markup Language)을 적응하려는 움직임을 보이고 있다. 이를 위해서는 DXF형식의 GIS데이터를 OGC(Open Gis Consortium)에서 제안한 GML(Geography Markup Language)로 변환하기 위한 변환기를 필요로 한다. 본 논문에서는 DXF를 GML로 변환하기 위한 DXF2GML변환기의 효율적인 번역을 위해, DXF와 GML의 의미적 차이를 해결하고 효율적인 변환과정을 구현하기 위한 DXF2GML변환기의 중간코드를 제안하고자 한다. 또한 제안된 중간코드를 적용하여 DXF2GML변환기의 Front-End인 중간코드 생성기와 Back-End인 GML문서 생성기를 구현하고자 한다.

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A Case Study on the Estimation of Flooded Area using GIS (GIS를 이용한 홍수피해지역 분석에 관한 사례연구)

  • Ahn, Sang-Jin;Jun, Kye-Won;Kim, Jin-Guek
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2002.10a
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    • pp.305-308
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    • 2002
  • This study is that analyzes the flood damages caused by rainfall during typhoon and how inundated area should be affected. Using HEC-HMS for analyzing rainfall-runoff and GIS (Geography Information System) for analyzing inundated area and volume. Each model was applied to Seopyung area for runoff effect analysis. As the result, Damaged area was magnified gradually according to the increase of rainfall and GIS was good for calculating the exact flood damage area at varied time.

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Effect of GIS-integrated Lessons on Spatial Thinking Abilities and Geographical Skills (GIS를 활용한 수업이 공간적 사고능력과 지리적 기능에 미치는 영향)

  • Chun, Bo-Ae
    • Journal of the Korean Geographical Society
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    • v.45 no.6
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    • pp.820-844
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    • 2010
  • This study investigates the effect of GIS-integrated lessons on spatial thinking abilities and geographical skills using discourse analysis along with a comparative three-case case study method. A series of curricula were designed and implemented in an 8th grade classroom for a semester. The data collected consist of the dialogue transcripts of six consecutive GIS-integrated lessons. The transcripts were analyzed to identify the moves (speech acts) used by each student and to classify discourse content of spatial thinking and geographical skills. Based on three individual case studies, a cross-case study was performed to uncover any relationship between the phenomenon and the contexts. The empirical evidence from discourse analysis demonstrated that students were able to generate appropriate terms representative of spatial thinking and geographical skills although students appeared to possess primarily lower-order spatial abilities, followed by a moderate-level of spatial abilities. Considering that the unit was implemented in a biology class rather than a geography class the result reflected the fact that the student's spatial thinking and geographical skills were attributable to the GIS-integrated lessons. Thus, the results have a great implication for GIS-integrated lessons and geography education as an innovative tool for improving student's spatial thinking and geographical skills.