• Title/Summary/Keyword: GIS spatial analysis

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GRAM++ - An Indian GIS Suite With Decision Support Applications

  • Mohan, Buddhiraju Krishna;Parvatham, Parvatham Venkatachalam;Jaswinder Kaur, Suri
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.994-996
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    • 2003
  • GRAM++ is a collection of software packages for geographic information system (GIS) applications, developed indigenously at the Centre of Studies in Resources Engineering (CSRE), Indian Institute of Technology (IIT), Bombay. This software is now being used for a number of GIS applications that assist decision makers in taking informed decisions. Some of these applications include simulation of the spatial impact of raising height of dam and assessment of the costs and benefits; identifying sites suitable for inland aquaculture and validation with existing sites; developing resource profiles and computation of human development indices for prioritized development; land suitability analysis for agriculture applications.

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Application of infinite slope stability analysis method using GIS technique : case study of boeun area (GIS를 이용한 공간자료 적용 및 무한 사면의 안정성 해석 기법 적용 검증 : 보은지역을 중심으로)

  • 이연희;정영국;박혁진;이사로;장범수;전귀현
    • Proceedings of the KSEG Conference
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    • 2003.04a
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    • pp.153-158
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    • 2003
  • Traditionally, the statistical methods has been used to analyze the relationship between landslide occurrence and related factors(soil depth, soil strength, slope angle, vegetation, etc.) in GIS technique. However, the method have no mechanical meaning. Therefore, the mechanical model is suggested in this research. The method analyzes the mechanical equilibrium of a potential slide block and then calculates a slope safety factor. Since this method is able to consider the balance of forces applied to the slope and is a more reasonable method for an individual site. In this research, the spatial data is obtained, managed and analyzed using GIS technique, and the infinite slope model is used to evaluate factor of safety and analyze the slope stability.

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A Study on Rural Planning Methodology(II) Using Spatial Analysis Method of GIS - (농촌지역 토지이용계획 기법 연구(II) -GIS의 공간분석기법 이용-)

  • 정하우;박병태
    • Journal of Korean Society of Rural Planning
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    • v.1 no.2
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    • pp.43-52
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    • 1995
  • This study is to establish a planning methodology for rural area development with land suitability classification. Land suitability classification was carried out by introducing Geographic Information System. The planning methodology was applied to Sunheung district located in Youngpoong county, Kyongbuk Province, Korea. Land suitability classification by the GIS showed that only 29 % of present agricultural land were higher than class 2 and 71 % were in bad condition for agricultural land. Especially, 22.2 % of agricultural land were under class 5 as the lowest level and 265.2 ha of forest were possible to develop as an agricultural land. It was proved that GIS may be a powerful tool in rural planning process. In addition, it is thought that GIS can be applied to the fields of agricultural land management system in many ways.

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APPLICATION OF LOGISTIC REGRESSION MODEL AND ITS VALIDATION FOR LANDSLIDE SUSCEPTIBILITY MAPPING USING GIS AND REMOTE SENSING DATA AT PENANG, MALAYSIA

  • LEE SARO
    • Proceedings of the KSRS Conference
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    • 2004.10a
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    • pp.310-313
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    • 2004
  • The aim of this study is to evaluate the hazard of landslides at Penang, Malaysia, using a Geographic Information System (GIS) and remote sensing. Landslide locations were identified in the study area from interpretation of aerial photographs and from field surveys. Topographical and geological data and satellite images were collected, processed, and constructed into a spatial database using GIS and image processing. The factors chosen that influence landslide occurrence were: topographic slope, topographic aspect, topographic curvature and distance from drainage, all from the topographic database; lithology and distance from lineament, taken from the geologic database; land use from TM satellite images; and the vegetation index value from SPOT satellite images. Landslide hazardous area were analysed and mapped using the landslide-occurrence factors by logistic regression model. The results of the analysis were verified using the landslide location data and compared with probabilistic model. The validation results showed that the logistic regression model is better prediction accuracy than probabilistic model.

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Development of a GIS-Application Model for Appropriate Allocation and Management of Agricultural Products Marketing Facilities (농산물 유통시설의 적정배치와 운영을 위한 GIS-응용모형 개발)

  • 이정재;김대식;정하우
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.38 no.2
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    • pp.87-96
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    • 1996
  • General concepts and overall procedures of APMAG-Agricultural Products Marketing Analysis Model using GIS(Geographic Information System) techniques for appropriate allocation and management of agricultural products marketing facilities are introduced. In this study, modeling techniques and visual reporting skills are both emphasized. The APMAG enables to analyze the temporal and spatial flow of agricultural products marketing by the flow function that is proposed in this study. Results analyzed by proposed model for rice are displayed many different ways and show the use of the given model.

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Standardization for GIS Interface: An Analysis of ISO Standards (ISO/TC211의 GIS 표준 인터페이스 구성요소의 분석)

  • Moon Sang-Ho;Ban Chae-Hoon;Kim Tschang-Ho John
    • 한국공간정보시스템학회:학술대회논문집
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    • 1998.07a
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    • pp.223-235
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    • 1998
  • 앞으로 다가오는 정보화 사회에서의 국가경쟁력을 키우기 위해서는 정보처리 및 운영능력이 대단히 중요하다. 지리정보는 이러한 정보화 사회에서 중요한 국가 간접자본중의 하나이다. 그리고 국가 GIS에서 가장 풍요한 요소는 지리정보의 호환, 공유, 유통 등을 포함한 지리정보의 활용이다. 따라서 국가적으로 GIS의 활성화를 위하여 지리정보의 표준화가 시급한 실정이다. 이 논문에서는 국제 표준화 기관인 ISO/TC211에서 수행중인 표준화 내용을 분석한다. 특히, 지리정보의 활용과 GIS들간의 상호 연동성을 위한 지리정보/지리공간 서비스를 중점으로 하여 IS0/TC211에서 표준안으로 제시하는 서비스 항목, 인터페이스 등 지리정보 서비스와 관련된 내용을 분석한다.

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A study to develop underground cross-section model and analysis/assess system using geotechnical information DB and GIS (지반정보DB 및 GIS기술을 이용한 지반모델 생성과 분석평가 시스템 개발에 관한 연구)

  • 우제윤;구지희;이상훈
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2004.03a
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    • pp.579-585
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    • 2004
  • 지반정보DB는 NGIS 2단계 기본계획의 하나인 ‘지하지리정보’구축 시 프레임이 되는 정보로써 건설교통부는 '00년부터 전 국토를 대상으로 DB화하는 사업을 추진하고 있다. 그러나 이러한 정보가 지반의 개괄적인 상태파악에만 목적이 있을 뿐, 보유한 공학정보를 이용하여 지반해석과 상세설계에는 활용하지 못하고 있는 실정이다. 본 연구에서는 지반정보 DB에서 공간정보와 시추 및 공학시험정보를 실시간으로 불러들이고, 정의한 알고리즘에 따라 토공량 산정, 지지력 산정, 침하량산정, 연약지반 평가, 액상화 평가를 수행하는 GIS Client를 개발하였다. 사용자는 Client로 지도상에서 구간 및 각종정보를 입력할 수 있으며, 그 결과를 수치 혹은 평면도 형태로 제공받을 수 있다. 본 연구를 통해 지반정보 DB 수요를 건설계획 및 설계 등 실무 전반으로 넓힐 수 있으리라 기대된다.

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Application of GIS Engine for Runoff Parameter Analysis (유출 매개변수 분석을 위한 GIS 엔진의 적용)

  • Kim, Sang-Ho;Choi, Keun-Ho;Kim, Seong-Joon
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2008.06a
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    • pp.101-108
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    • 2008
  • 본 연구의 목적은 분포형 추문모형에 있어 공간변수의 디테일함을 고려하기 위해 GIS와 결합된 SCS-CN 값 산정 모형을 개하는데 있다. 모형은 (주)한국공간정보통신의 GIS 소프트웨어 개발도구인 IntraMap/Objects를 사용하였고 마이크로소프트사의 닷넷 플랫폼 개발 언어인 C#으로 개발하였다. 모형의 입력자료인 토지이용도와 토양도의 지형학적 가공을 위해 클립(Clip), 디졸브(Dissolve), 인터섹션(Intersection)과 같은 지형전처리 모듈(GeoPreprocessing Module)을 개발하였다. 또한 전처리된 토지이용도(토지이용항목필드)와 토양도(추문학적 토양그룹필드)를 CN 값 기준도표에 매치시킴으로서 유역의 선행토양함수조건에 따른 분포형 CN 값 및 개략적인 유출량을 산정하는 모형을 개발하였다. 본 연구의 모형은 지형, 토양도 토지이용도, 토지피복도 변화에 따른 미래 유출량을 예측하는데 사용될 수 있을 것이다.

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The Analysis of Parcels for Land Alternation in Jinan-Gun jeollabuk-Do based on GIS (GIS 기반 전라북도 진안군의 토지이동 필지 분석)

  • Lee, Geun Sang;Park, Jong Ahn;Cho, Gi Sung
    • Journal of Korean Society for Geospatial Information Science
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    • v.22 no.1
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    • pp.3-12
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    • 2014
  • Cadastre is a set of activity registering diverse land information in national scope land management works. A nation examine land information and register it in a cadastral book, and must update data when necessary to properly maintain the information. Currently, local governments execute work about parcels of land alternation by manual work based on KLIS road map. Therefore, it takes too much time-consuming and makes problem as missing lots of parcels of land alternation. This study suggests the method selecting the parcels of land alteration for Jinan-Gun of Jeollabuk-Do using the GIS spatial overlay and the following results are as belows. Firstly, the manual work on the parcels of land alteration was greatly improved through automatically extracting the number and area of parcels according to the land classification and ownership by GIS spatial overlay based on serial cadastral maps and KLIS road lines. Secondly, existing work based on KLIS road lines could be advanced by analyzing the parcels of land alternation using the actual-width of the road from new address system to consider all road area for study site. Lastly, this study can supply efficient information in determining the parcels of land alternation consistant with road condition of local governments by analyzing the number and area of parcels according to the land classification and ownership within various roadsides ranging from 3m, 5m, and 10m by GIS buffering method.

Development of an Integrated DataBase System of Marine Geological and Geophysical Data Around the Korean Peninsula (한반도 해역 해양지질 및 지구물리 자료 통합 DB시스템 개발)

  • KIM, Sung-Dae;BAEK, Sang-Ho;CHOI, Sang-Hwa;PARK, Hyuk-Min
    • Journal of the Korean Association of Geographic Information Studies
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    • v.19 no.2
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    • pp.47-62
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    • 2016
  • An integrated database(DB) system was developed to manage the marine geological data and geophysical data acquired from around the Korean peninsula from 2009 to 2013. Geological data such as size analysis data, columnar section images, X-ray images, heavy metal data, and organic carbon data of sediment samples, were collected in the form of text files, excel files, PDF files and image files. Geophysical data such as seismic data, magnetic data, and gravity data were gathered in the form of SEG-Y binary files, image files and text files. We collected scientific data from research projects funded by the Ministry of Oceans and Fisheries, data produced by domestic marine organizations, and public data provided by foreign organizations. All the collected data were validated manually and stored in the archive DB according to data processing procedures. A geographic information system was developed to manage the spatial information and provide data effectively using the map interface. Geographic information system(GIS) software was used to import the position data from text files, manipulate spatial data, and produce shape files. A GIS DB was set up using the Oracle database system and ArcGIS spatial data engine. A client/server GIS application was developed to support data search, data provision, and visualization of scientific data. It provided complex search functions and on-the-fly visualization using ChartFX and specially developed programs. The system is currently being maintained and newly collected data is added to the DB system every year.