• Title, Summary, Keyword: Web GIS

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GIS-based Web-Service Architecture

  • Niaraki, Abolghasem Sadeghi;Kim, Kye-Hyun;Lee, Chol-Young;Kim, Tae-Hoon
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • pp.113-118
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    • 2008
  • The present research addresses the system design for building a geospatially-based web services application for mobile users. In recent years, geospatial information(GI) and Geographic Information Systems(GIS) are significant resources in decision-making analyses at various levels of society and activities. Recently, the integration of GIS and web services, called GIS web services, provides the wider implementation of GIS. At the present time, accessing, presenting, and manipulating updatedgeospatial information to locate geo-related facility services are real challenges related to application developers to implement for foot-travelers properly. The present paper investigates how the web services work in a GIS for discovering geo-related facility services such as a restaurant and post office in the user's vicinity. Thus, a prototype, with an architecture consisting of a windows application on the client side as well as facility services and geo-engineon the server side, were designed and implemented with the proposed GIS web services platform. On both the client and server sides, visual studio .Net technology was used. A geo-engine on the server side was also built with ESRI's MapObjects. Following successful implementation of the prototype presented in this study, the mobile user is able to invoke remote web services to assess the location of various facilities such as restaurants. Moreover, the present research demonstratesthat web services are not restricted only to web-based use, but can also be utilized by any web-connected application.

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Construction of Web-based GIS System for searching of the Teacher Information (교원정보 검색을 위한 Web기반 GIS 시스템 구축)

  • Shin, Sam-Bum;Kim, Sun-Mi;Kim, Chang-Soo
    • Journal of Fisheries and Marine Sciences Education
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    • v.19 no.3
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    • pp.373-382
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    • 2007
  • As the Internet users are growing, GIS researchers that would like to integrate various GIS informations have more interests for information searching technologies based on Web. But, even though these researches is growing a infinite possibility of utilizing the map, there are not yet providing more functionalized GIS services. This paper proposes a searching mechanism for the teacher information based on the SVG(Scalable Vector Graphics) format transformed the SHP format. We also implement the home-page link function inserted Web-connection information of the specific locations that could connect specific school web site within SVG file. We also provide the services to interpret requested query with proposed scheme.

Design and Implementation of Mobile Web Map Service (모바일을 위한 웹지도 서비스의 설계 및 구현)

  • Choi, Jae-Young;Chung, Yeong-Jee
    • Journal of Internet Computing and Services
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    • v.6 no.5
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    • pp.97-110
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    • 2005
  • Recently, many WMS(Web Map Services) and POI(Point of Interest) services come to be in service on the Internet using Web GIS(Geographic Information System) as Information Technology and computer H/W are evolved faster in its speed, network bandwidth and features. The Web GIS is, however, limited and constrained on the specification of its system configuration, the service class provided and the presentation methodology of a map. As the mobile Internet becomes popular in mobile service, Web GIS service on mobile environment is strongly required and to be provided by location based WMS(Web Map Service) on a mobile client such as PDA with location information of the user. In this paper, we made an effort to design and implement a GIS computing environment by thin client for mobile web map service. For implementing the thin client GIS computing environment. we were using NGII's(National Geographic Information Institute's) DXF map, representing the map by SVG(Scalable Vector Graphics) recommended by OGC(OpenGis Consortium), and adapting standard XML web service to provide the thin client GIS service on PDA by applying the location information of the user in realtime with GPS on mobile environment.

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Implementation of WebGIS for Integration of GIS Spatial Analysis and Social Network Analysis (GIS 공간분석과 소셜 네트워크 분석의 통합을 위한 WebGIS 구현)

  • Choi, Hyo-Seok;Yom, Jae-Hong
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.32 no.2
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    • pp.95-107
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    • 2014
  • In general, topographical phenomena are represented graphically by data in the spatial domain, while attributes of the non-spatial domain are expressed by alpha-numeric texts. GIS functions for analysis of attributes in the non-spatial domain remain quite simple, such as search methods and simple statistical analysis. Recently, graph modeling and network analysis of social phenomena are commonly used for understanding various social events and phenomena. In this study, we applied the network analysis functions to the non-spatial domain data of GIS to enhance the overall spatial analysis. For this purpose, a novel design was presented to integrate the spatial database and the graph database, and this design was then implemented into a WebGIS system for better decision makings. The developed WebGIS with underlying synchronized databases, was tested in a simulated application about the selection of water supply households during an epidemic of the foot-and-mouse disease. The results of this test indicate that the developed WebGIS can contribute to improved decisions by taking into account the social proximity factors as well as geospatial factors.

Application Strategies of Geospatial Service Registry for SOA in GIS Web Services (GIS 웹 서비스에서 SOA를 위한 공간정보 레지스트리 적용 전략)

  • Ha, Su-Wook;Park, Jong-Min;Nam, Kwang-Woo
    • Spatial Information Research
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    • v.18 no.4
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    • pp.121-128
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    • 2010
  • In this paper, we propose the application models and strategies of geospatial services registries for SOA in GIS web services. Recently. a number of SOA/web services are being developed for various commercial or public applications. However, geospatial SOA services are less used than general purpose SOA services, because GeoSpatial service registries has been neglected in many GIS applications even though GeoSpatial registries are essential component for open geospatial services. These problems are due to lack of researches for GIS registry usages. In this paper, we define the role player ill GIS SOAs, and develop the various GIS web service models among the players. Besides, we suggest the applications strategies of GeoSpatial services registries in the service models.

Data Sharing of Web-GIS Based on OWS (Web-GIS 를 위한 데이터 공유)

  • Jang, In-Sung;Choi, Hea-Ok;Lee, Jong-Hun
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.97-100
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    • 2001
  • 인터넷과 WWW 이용의 급속한 증가로 인하여 인터넷 지리정보시스템의 보급이 확산되었다. 따라서 국내외의 분산된 다양한 데이터에 대한 접근이 가능하게 되었다. 하지만 웹을 통해 제공되어지는 지리정보 데이터의 이질성 때문에 지리정보를 공유하기가 어렵다. 그러므로 발생하는 데이터 구축에 대한 중복투자를 제거하고 지리정보 데이터의 상호 운용성(Interoperability)을 위해 본 논문에서 OGC(OpenGIS Consortium)의 웹 매핑 표준 기술인 WMT(Web Mapping Testbed)의 OWS(OGC Web Service)에 기반 하여 Web 매핑 서버를 설계 및 구현하였다. 이는 인터넷상에서 데이터 공유 및 교환의 포맷인 XML 에 근간을 둔 GML 을 통해서 Web GIS환경에서의 상호운용성을 제공하고자 한다.

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WEB기반의 환경GIS 자료구축과 검색에 관한 연구

  • 김창제
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • pp.1-5
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    • 1997
  • WEB기반의 환경GIS 자료관리를 위해 JVM(Java Virtual Machine), JDBC, Oracle을 이용한다 환경GIS자료에는 위성영상, 주제도, 일반 GIS자료 등이 있으며, 이 자료는 공간정보와, 속성정보를 가지고 Server의 DB에 존재한다. 자료의 검색과 등록은 WEB Browser에서 조회용 지도를 이용하여 지도상 공간속성정보와 비공간속성정보에 의한 검색기능을 제공한다.

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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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    • 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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An Extended DOM for GML Data (GML 데이타를 지원하는 확장된 DOM)

  • Ban, Chae-Hoon;Jo, Jeong-Hee;Moon, Sang-Ho;Hong, Bong-Hee
    • Journal of KIISE:Computing Practices and Letters
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    • v.8 no.5
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    • pp.510-519
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    • 2002
  • The OpenGIS Consortium has proposed a new web-mapping technology to support interoperability in web GIS environment by developing the specifications of MapServer and GML. In this environment, the MapServer transforms legacy spatial data into GML data, and clients display them on standard web browsers. This web-mapping testbed proposes methods for discovering, accessing, integrating and displaying GIS information except processing of spatial operations which are essential services in GIS environment. This paper proposes the method for executing spatial operations on GML data which are overlays of different map layers in legacy data servers. To support spatial operations on GML data in web GIS environment, this paper designs and implements GDOM based on the W3C's DOM Specifications and OGC's Simple Features Specifications. This paper shows the specifications and implementation of GDOM and the process of spatial operations in web-mapping testbed environment.

Prototype of Crops Information System based on Ontology and WebGIS (Ontology와 WebGIS 기반 프로토타입 농작물 작황 정보시스템 구축)

  • Lee, Hong-Ro;Baek, Jeong-Hyun;Baek, Jeong-Ho
    • Journal of the Korean Association of Geographic Information Studies
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    • v.11 no.3
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    • pp.43-51
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    • 2008
  • In this paper, we present WebGIS techniques that can acquire more information from users who offered information and location of region's crops. So that it can be search the information based on Ontology defining Metadata for understand and control more accurately. And this paper shows how to implement about prototype of crops information system for obtaining information of location. Our object is to offer results Service form search, to analyze question of user and to show the exact geographic information about question of user. So this paper can be provide convenience to users that can be show Semantic WebGIS system.

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