• Title/Summary/Keyword: Arc-GIS

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Indices Characterizing Road Network on Geo-Spatial Imagery as Transportation Network Analysis

  • Lee, Ki-Won
    • Korean Journal of Remote Sensing
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    • v.20 no.1
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    • pp.57-64
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    • 2004
  • In GIS-based network analysis, topological measure of network structure can be considered as one of important factors in the urban transportation analysis. Related to this measure, it is known that the connectivity indices such as alpha index and gamma index, which mean degree of network connectivity and complexity on a graph or a circuit, provide fundamental information. On the other hand, shimbel index is one of GIS-based spatial metrics to characterize degree of network concentration. However, the approach using these quantitative indices has not been widely used in practical level yet. In this study, an application program, in complied as extension, running on ArcView- GIS is implemented and demonstrated case examples using basic layers such as road centerline and administrative boundary. In this approach, geo-spatial imagery can be effectively used to actual applications to determine the analysis zone, which is composed of networks to extract these indices. As the results of the implementation and the case examples, it is notified that alpha and gamma indices as well as shimbel index can be used as referential data or auxiliary information for urban planning and transportation planning.

The Development of a Tour Route Guidance System Using a Traveling Salesman Problem Algorithm (TSP 알고리듬을 이용한 관광노선 안내 시스템 개발)

  • 정영아;구자용
    • Spatial Information Research
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    • v.11 no.3
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    • pp.275-289
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    • 2003
  • This study focused on offering a helpful information for the touring. To develop a tour route guidance tool, it is needed to use a GIS function, which can suggest a possible shortest path based on time and distance. A Traveling salesman problem algorithm, which was developed to solve multi destination problem in network analysis, was used to implement a tour guidance system. This system was developed using ArcObjects programming components within ArcGIS 8.3. Jeju city was selected for the case study to apply the tool and to test the effectiveness of it. This study demonstrated that this tool was considerably effective for finding a probable optimum tour path in the following aspects. First, it can help tourists to select several attractions from numerous tour sites in an area given limited time. Second, tourist can manage time efficiently by organizing their tour courses on the basis of the tool. Third, tourists can reduce the uncertainties that may happen under unexpected situations in unfamiliar places by obtaining specific spatial information using the tool. Fourth, the Graphic User Interface of the tool can be easily used to obtain visual information of spatial data.

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Implementations of Geographic Information Systems on Sewage Management for Water Resources Protection

  • Wu, Mu-Lin;Chen, Chiou-Hsiung;Chou, Wen-Shang;Huang, Hsiu-Lan
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1188-1190
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    • 2003
  • Taipei Watershed Management Bureau (WRATB) is a government agency entitled for water resources protection at two major watersheds in order to provide drinking water for about four millions population in Taipei on a sustainable basis. At WRATB, there are two major public sewage treatment facilities which can convert sewage in each watershed into an acceptable state before they were discharged into rivers. More than 82% of household wastewater have been collected and treated by the two public sewage systems. However, households at remote area still need more effective sewage management prescriptions. The objective of this paper is to implement geographic information systems in order to provide more effective approaches that sewage management can be easier and cost effective. ArcIMS was implemented for Internet browsing and map server of those sewage facilities on personal computers, laptop computers. In the open field, ArcPAD was implemented with personal digital assistant (PDA) such that compact flash type's global positioning systems (GPS) and digital camera can be utilized with PDA. All sewage facilities digital files were convert into ArcMap format files. MapObjects and visual BASIC were used to create sewage application modules to meet every single technician personal flavor. ASP.NET was implemented for Internet database manipulations of all sewage databases. Mobile GIS was the key component of GIS applications in the open field for sewage management on a basis of house by house. Houses at remote area, which can not cover by the two public sewage systems, were managed by PDA and laptop computers with GPS and digital camera. Sewage management at Taipei Watershed Management Bureau is easier both in the open field and in the office. Integration of GPS, GIS, and PDA makes sewage management in the open field much easier. ArcIMS, MapObjects, ASP.NET and visual BASIC make sewage management can be done in the office and over Internet.

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A Study On Choosing The Most Suitable Roadline Using Digital Photogrammetry and GIS in Mountain Area (산악지역에서의 수치사진측량에 의한 DEM추출과 GIS를 이용한 3차원 도로시뮬레이션에 관한 연구)

  • Quan He-Chun;Lee Byung-Gul
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.24 no.1
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    • pp.123-130
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    • 2006
  • The purpose of the paper is to make the three dimensional road simulation model based on the digital photogrammetry and GIS techniques in the middle of Halla mountain of Jeju island. To do this, we generate DEM (digital elevation model) and digital ortho image using GIS tools such as Arc View, Imagestation and MGE module. In GIS, the overlay map schemes combining of the hill shade, the land slope and aspect were applied. Based on the processes, we can build the best three dimensional road line along the hill side of the island. From the results, we also found that the derived DEM from digital ortho image and the GIS technique were very useful for choosing the best three dimensional road design before the real road construction works in Jeju island.

Application of ArcGIS-based Model Developed to Estimate Monthly Potential Soil Loss (월단위 토양유실가능성 추정을 위해 개발된 ArcGIS 기반의 모형 적용)

  • Yu, Na Young;Shin, Min Hwan;Kim, Jonggun;Park, Youn Shik
    • Journal of The Korean Society of Agricultural Engineers
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    • v.59 no.5
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    • pp.109-126
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    • 2017
  • Universal soil loss equation (USLE) is used to estimate soil loss solely or employed in any hydrologic models. Since soil erosion has been an issue in South Korea for decades, the Ministry of Environment enacted a law to regulate soil erosion in 2012, which is the Notification of topsoil erosion status. The notification is composed of preliminary and field investigations, the preliminary investigation suggests to use USLE and provides USLE factors. However, the USLE factors provided in the notification was prepared at least 10 years ago, therefore it is limited to reflect recent climate changes. Moreover the current yearly USLE approach does not provide an opportunity to consider seasonal variation of soil erosion in South Korea. A GIS-based model was therefore applied to evaluate the yearly USLE approach in the notification. The GIS-based model employs USLE to estimate soil loss, providing an opportunity to estimate monthly soil loss with monthly USLE factor databases. Soil loss was compared in five watersheds, which were Geumgang, Hangang, Nakdonggang, Seomjingang, and Yeongsangang watersheds. The minimum difference was found at Seomjingang watershed, the yearly potential soil loss were 40.15 Mg/ha/yr by the notification approach and 34.42 Mg/ha/yr by the GIS-based model using monthly approach. And, the maximum difference was found at Nakdonggang watershed, the yearly potential soil loss were 27.01 Mg/ha/yr by the notification approach and 10.67 Mg/ha/yr by the GIS-based model using monthly approach. As a part of the study result, it was found that the potential soil loss can be overestimated in the notification approach.

Research on the Sharing of Disaster Information Using Web GIS Technology (Web GIS를 이용한 재해 정보 제공에 관한 연구)

  • 김동문;양인태
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.21 no.2
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    • pp.101-107
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    • 2003
  • Lately, much researches for information management of web GIS base are gone. Specially, disaster Information Management System development of Web-Based for management and offer of disaster information such as flood or earthquake is necessarily necessary for prevention and countermeasure about disaster, disaster information acquisition of interest area. Spatial DB access for plan/analysis/management business of this system should be possible and must become display of disaster information and disaster mapmaking through internet for disaster prevention but research of web GIS base about this field is childhood yet. This research executed research for disaster information offer using HTML and Javascript and ESRI's ArcIMS that is development tools or web GIS. And this research could search disaster information of interest area through various kinds function and offer in display through user selection. Also, topography of interest area could confirm through third dimension topography model who use VRML. And this research could supply disaster information of Chunchon city using various function thorough system of Web-Based.

Development of a GIS Model for Projecting Eco-Friendly Forest Roads (GIS를 이용(利用)한 환경친화적(環境親和的) 임도(林道) 노선(路線) 선정(選定) 프로그램의 개발(開發))

  • Lee, Byungdoo;Chung, Joosang
    • Journal of Korean Society of Forest Science
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    • v.89 no.3
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    • pp.431-439
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    • 2000
  • In this study, a GIS-application model to determine the optimal route of eco-friendly forest roads and to evaluate the environmental and engineering features of the route was developed. The model consists of five modules for managing spatial and attribute data, determining the optimal route for forest road projection, evaluating environmental and engineering efficiency of forest roads, analyzing characteristics of mountain terrains and report-writing. Using the pull-down menu system, these modules were integrated to be user-friendly for forest field practitioners. Visual Basic 6.0 and Avenue were used as the programming tool and the commercial GIS softwares, ArcView 3.1, Spatial Analyst and 3-D Analyst were used as the basic engine of the model for GIS analysis. In this paper, discussed are the principles for forest road projection and evaluation and structures and application features of the model.

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Analysis of Korean Highly Pathogenic Avian Influenza using GIS (GIS를 이용한 국내 고병원성 조류인플루엔자 분석)

  • Yang, So-Myung;Yoon, Hong-Sik
    • Proceedings of the Korean Society of Disaster Information Conference
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    • 2017.11a
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    • pp.275-277
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    • 2017
  • 본 논문에서는 GIS를 이용하여 국내 고병원성 조류인플루엔자(HPAI) 발생 농가를 대상으로 HPAI 감염 및 확산에 영향을 미치는 여러 인자와의 연관성을 분석한다. 인자는 크게 철새에 기인한 1차 감염과 사람에 기인한 2차 감염으로 나눈다. 전자는 철새 이동경로, 철새 도래지, 후자는 고속도로, HPAI 발생 농가 간 거리를 분석한다. 분석 시 거리는 500m(관리지역), 3km(보호지역), 10km(예찰지역)으로 설정하고, ArcGIS 프로그램을 사용하였다.

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GIS-based Tunnelling-induced Building/Utility Damage Assessment System-Development and Application (GIS기반의 터널시공에 따른 주변건물/매설관 손상평가 시스템-개발 및 적용)

  • 유충식;전영우;김재훈;박영진;유정훈
    • Proceedings of the Korean Geotechical Society Conference
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    • 2003.03a
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    • pp.233-240
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    • 2003
  • A GIS-based tunnelling risk management system (GIS-TURIMS) has been developed in this study The developed system uses ArcView 8.2 as a basic platform and the built-in interface(VBA) has been used to perform first-order simplified analyses for prediction of tunnelling-induced ground movements and building damage assessment. The main emphasis in this study was to develop a working framework that can be used in the perspective of tunnelling risk management. The developed system is capable of carrying out computationally intensive first-order analyses for ground movement prediction as well as building/utilities damage assessment with fully taking advantage of the GIS technologies. This paper describes the concept and details of the GIS-TURIMS development and implementation.

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CFD Analysis of Gas Insulated Switchgear with Moving Grid (이동격자를 이용한 초고압 차단기 유동해석)

  • Min B. S.;Park I. S.
    • Proceedings of the KSME Conference
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    • 2002.08a
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    • pp.737-738
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    • 2002
  • To develop and improve a GIS(Gas Insulated Switchgear), the prediction of the pressure in puffer cylinder and the flow between the nozzle and the moving electrode within GIS is very important.The leading companies in GIS business issue the results of the study of flow within GIS including arc plasma. In this study, the characteristics of the flow of the GIS developed by HHI(Hyundai Heavy Industries Co. Ltd.) was investigated. To simulate the compressible flow of GIS, the CFX, a commercial CFD code, was used. With moving grid method, the movement of piston and electrode was simulated. The moving grid method was superior to the method of varying the property of cells to move an obsticle, in stability and convergencce of solution. The calculated maximum pressure within the puffer cylinder was matched with experimental data within $5{\%}$ error. The oscilation of pressure in GIS after the movement of electrode was well predicted.

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