• 한국공간정보시스템학회:학술대회논문집
• /
• 1999.06a
• /
• pp.35-45
• /
• 1999

기존에는 이질적인 GIS 데이타 소스간의 통합을 위해 랩퍼(wrapper)기술을 사용했다. 랩퍼(wrapper)는 외부 클라이언트 응용프로그램에게 이질적인 데이타 소스들의 통합 데이타 모델을 제공함으로써 데이타와 지리정보처리의 공유를 가능하게 한다. 그러나 데이타 소스들의 통합은 표준 서비스를 포함한 상호운용성을 지원하는 것은 아니다. 표준을 따르는 상호운용을 위해서는 표준화된 데이타 모델과 서비스가 필요한데 OGC (OpenGIS Consortium)의 OpenGIS(Open Geodata Interoperability Specification)가 이를 제공하고 있다. 분산환경에서 상호운용을 위한 기존방법은 각 데이타 소스별로 데이타 제공자를 개발하여 상호운용을 지원하였다. 따라서 중복 구현에 대한 문제와 구현에 따른 노력과 비용이 상당 부분 존재하였다. 본 논문에서는 데이타 제공자에서 공통부분을 추출 및 컴포넌트 화하고 데이타 소스에 종속되는 모듈은 CORBA 구현객체로 작성하여 제시하였다. 따라서 각 데이타 소스들은 표준 데이타 제공자를 통해서 기존의 데이타 지원 기능유지와 상호운용성을 달성할 수 있다. 클라이언트는 OpenGIS Feature모델을 기반으로 한 표준 인터페이스로 데이타 소스에 접근한다. 데이타 소스는 표준데이타 제공자와 정의된 인터페이스를 바탕으로 CORBA의 구현 객체 서버를 작성함으로서 중복구현 및 구현부담을 줄일 수 있다.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.16 no.1
• /
• pp.1-14
• /
• 2013

The world largest land reclamation project in the name of Saemangeum(Ariul) from 1991 to the present has been implementing in a part of the west coast of Korea. In the Saemangeum reclamation project, the large-scale project cost is used for the landfill reclamation. A number of landfill reclamation methods have been studied in order to reduce the large-scale cost of the Saemangeum project under construction. There are many studies related to the on-site real-time monitoring with mobile systems for operating a wide range of landfill. In order to apply the work method for efficient cost-savings in the landfill operations to the Samangeum project, this paper develops a mobile management system that is composed of a mobile interface module, a data server module for data transmission and storage, and an analysis server module to analyze the input data and derive the results. The mobile system is designed by analysing user's and system requirements, functional interactions, and data flow using unified modeling language(UML). The user interface is developed for the on-site real-time monitoring through the status and related attributes of land reclamation by using the digital maps of the Samangeum coverage via mobile devices. Finally, a mobile management system would be developed that can provide a 3D GIS service based on the Dry Internal Project Site Digging Reclamation Method(DIPSDRM).

• The KIPS Transactions:PartC
• /
• v.13C no.3 s.106
• /
• pp.383-388
• /
• 2006

Most of GIS services have been operated in single applications, and as data processing and computer and mobile technologies have developed rapidly, users request for efficient sharing between each GIS's own data and various different GIS's. However, since many GIS applications maintain their own data formats, they are incapable of processing data formats different with each other, and do not have a filtering function for mobile GIS. This paper designs an integrated preprocessor, SMP to accept features of various current formats of geographic information such as DXF(Drawing eXchange Format), DWG(DraWinG), SHP(SHaPefile), etc., and to extract core information for describing maps. The geographic information extracted by SMP(Synthetic Map Preprocessor) shows consistency in various formats by visualizing through the integrated view. By generating the extracted core data in GML, it supports rapid access to mobile devices and extensibility of file formats overcoming heterogeneity.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2015.05a
• /
• pp.464-464
• /
• 2015

수문해석을 수행할 때 유역의 지형으로 부터의 얻어진 수문인자를 사용한다. 유역의 경사나 흐름방향과 같은 지형적인 수문인자는 DEM 자료를 이용하여 여러 수치계산과정을 통해 얻을 수 있다. 이는 특히 유역 수문해석에 있어 유역 특성치 및 수문 인자들의 공간적으로 분포시켜 접근하는 분포형 모형에서 지형적인 입력요소 로 중요하게 사용된다. 본 연구에서는 아래와 같은 지형 수문인자 추출 모듈을 개발하고 사용하고자 한다. * Pit Remove : DEM에서 갱격자 제거 * Flat Remove : DEM에서 평격자 제거 * Flow Direction : 흐름방향 결정 * Flow Accumulation : 흐름 누적계수 결정 * Stream Definition : 하천영역 결정 * Watershed Delineation : 유역 생성 위의 모듈은 Java 오픈소스 프로그램으로서 분포형 수문해석 모형의 한 부분으로서 사용 가능하며, GIS 프로그램에 의존하지 않고 사용할 수 있다. 이 모듈은 이후 분포형 수문해석 프로그램 개발에 사용할 계획이며 연구에 사용되는 컴퓨팅 도구와 환경에 독립적으로 사용이 가능하다.

• Spatial Information Research
• /
• v.18 no.5
• /
• pp.119-131
• /
• 2010

Researchers require repetitive works such as data format analysis, reformatting and map reprojection in order to use geospatial data. To solve above problems, they are building web-based simulation systems with web developers. But the web-based systems are not efficiently developed because there is not the appropriate simulation framework for a web-based system using geospatial data. In this study, the geospatial simulation framework that can be effectively applied to the web-based system was designed and proposed. Also, the framework was composed of 7 modules; web mapping service, GIS mapping, statistics, model, processing,graphics, and geospatial datasets. In order to evaluate the effectiveness of the framework, a case study of urban growth has been verified. Experts who are not specialized in geospatial information disciplines expect to build easily a web-based system using geospatial data.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.14 no.1
• /
• pp.49-58
• /
• 2011

Recently, GIS(Geographic Information System) has been developed to personalized service for providing the specialized services that is aimed to personal user based on mobile communication. The existing GIS system provides comprehensive and simple information but GIS System for personalized service must provide the adjustive information through the personal interest profile based on POI(PoInt of Interest). This paper describes the intelligent retrieval geographical information service module for providing personal oriented geographic information service. Our proposal model consists of user preference profile, acquisition of POI through hybrid network (Wireless LAN, CDMA), service platform and implementation of prototype system. Implementation model can apply to the life information service like restaurant, oil station, convenient store and etc.

• Spatial Information Research
• /
• v.18 no.4
• /
• pp.141-149
• /
• 2010

One of recent trends in Web-based GIS is the system development using FOSS (Free and Open Source Software). Open Source software is independent from the technologies of commercial software and can increase the reusability and extensibility of existing systems. In this study, we developed a Web-based GIS for interactive visualization of geographic information using Google Earth and spatial DBMS(database management system). Google Earth Plug-in and Google Earth API(application programming interface) were used to embed a geo-browser in the Web browser. In order to integrate the Google Earth with a spatial DBMS, we implemented a KML(Keyhole Markup Language) generator for transmitting server-side data according to user's query and converting the data to a variety of KML for geovisualization on the Web. Our prototype system was tested using time-series of LAI(leaf area index), forest map, and crop yield statistics. The demonstration included the geovisualization of raster and vector data in the form of an animated map and a 3-D choropleth map. We anticipate our KML generator and system framework will be extended to a more comprehensive geospatial analysis system on the Web.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.6 no.2
• /
• pp.65-79
• /
• 2003

In this study GIS based pre- and post-processing tool for the Visual MODFLOW that is specific software to model groundwater flow is developed. This tool not only makes input data scientifically but also manages input and output data in terms of the groundwater flow analysis. In addition it can storage project products systematically into Oracle database. The most characteristic figure of this processing tool is to provide the module, which automatically or semi automatically develops various grid cell sizes using GIS ArcView and also produces DXF files reflecting various boundary conditions in the modeling zone. In particular, eminences of this research are to create 3 dimensional hydrogeological structures with 2 dimensional GIS ArcView and to conduct pre- and post- processing along with same topology and data format of the MODFLOW.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.26 no.6
• /
• pp.571-581
• /
• 2008

With the advent of u-City(ubiquitous city) concept, the importance of urban management has been increased. GIS is a foundation for the efficient urban management and an essential technology for the development of u-City. u-City, which aims for convenient, safe, healthy, and comfortable life, provides diverse services based on advanced information technologies, and it will offer more services in the future. u-City integrated management platform enables the ease of service development, guarantees the quality of services for the resident, and provides organic information sharing. Moreover, the platform by integrating GIS and other common management functions, makes possible efficient urban management. In this paper, required functions of u-City integrated management platform for u-City service were analyzed. As a result, GIS module for management of street lights and supervision of fire was developed and the application usability of u-City integrated management platform was verified by service simulation.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.565-568
• /
• 2003

Roadway construction planning processes involve a large amount of information on design, construction methods, quantities, unit costs, and production rates. GIS (Geographic Information System) is a strong tool for integration and managing various types of information such as spatial and non-spatial data required for roadway construction planning. This paper proposes a GIS-based system for improving roadway construction planning with its 'Spatial Analysis' and 'Visualization' functions. The proposed system cail help construction planner make a proper decision in a unique way by integrating design information and construction information within the system and creating design element modules for space scheduling purposes in real-time with its 'Interactive Planning' function.