• Journal of the Korean Association of Geographic Information Studies
• /
• v.11 no.2
• /
• pp.1-12
• /
• 2008

This paper identifies public transit-poors and derives spatial characteristics of the poors' distribution in an urban area by utilizing buffering analysis of geographic information systems and remote sensing techniques in the case of Daegu metropolitan city. Since special attention is given to elderlies, this study assigns three hundred meter buffer from bus/subway station as service boundary for elderlies. The results of this study tell us that 1) the transit-poors are concentrated on suburban and rural regions, 2) high proportions of the transit poors are elderlies with spatial variations in many regions, 3) the main housing type of the transit-poors is single detached house. We expect that this study can contribute to build an effective policy-making by showing essential technical processes and methods in identifying policy-need groups and their characteristics of spatial distribution.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.9 no.4
• /
• pp.13-21
• /
• 2010

Most of traffic management systems include the map-based traffic information services using World Wide Web. Geographic Information System is an efficient tool to build a map-based system. However, many traffic information service systems have own independent maps for graphic/animation softwares such as Adobe Flash. These systems make it difficult to manage modifications of maps. In this paper, we suggest a new GIS-based traffic information service system without these problems. The proposed system makes the efficient use of GIS map data for traffic information service because a map display engine is separated from map data that is transferred after real-time conversion.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.9 no.3
• /
• pp.25-35
• /
• 2006

Standardization or standard-related study are regarded as main issues in GIS applications. Though several GIS standards and specifications have been released, there are a few actual application cases adapting those. In this study, we designed and implemented a geo-spatial information processing system with editing, storing, and disseminating functions, in which standard GIS transportation data model by TTA linked with OGC-GML, XML-based geographic features encoding standard. The system developed in this study enables us to transfer and edit transportation entities based on TTA standards to GML, importing ESRI shapefile. In web-based system, GML-based databases are transformed to SVG file, for the purpose of web publishing. TTA GIS transportation data model is used in this study, and tested; however, standard data models from other application fields also can be easily applied because this system basically provides data importing and editing functions. This system as practical tools can be utilized for applicability test of GIS standard data model and practical operation of standard specification.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.22 no.3
• /
• pp.269-275
• /
• 2004

Geographic data have widely been applied in different areas including landuse, city planning and management, environment, disaster management and even daily use of citizens. Since geographic data have been built individually using different methods, many problems such as data inconsistency, duplicated investment, and confusion in decision making have arisen. Thus, the necessity of national framework database that can be shared by different areas has increased. As a result, eight fields of the framework database were defined by NGIS Law and 19 detailed items were selected. This study used the AHP (Analytical Hierarchy Process) and the decision tree to evaluate the relative importance of the items (eg. roads, railroads, coastline, surveying control points, and etc.) and presented the groups classified according to the priorities of the items. The result of this study is believed to contribute to effective budget planning for building national framework database.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.15 no.2
• /
• pp.150-160
• /
• 2012

The purpose of this study is to examine the relationship between children's walking safety or risk of traffic accident and the physical environments around 20 public elementary schools in Changwon-si, Gyeongsangnam-do. Field surveys were conducted to assess the street-level objective and subjective walking environments. The GIS method was used for measuring the neighborhood-level land use patterns. Children's walking safety and risk of traffic accident data were collected from the 6,381 grade 5 to 6 students attending 18 elementary schools through the questionnaire survey. Correlation analysis showed that walking safety and risk of traffic accident of the elementary students were associated with the number of temporary or permanent obstacles on the sidewalk, traffic safety signs, driveway and street intersections, street lights, and percentage of detached housing area and road area on neighbourhood-level. This research will promote to help with constructing a safe routes to school and walking-friendly healthy community.

• Journal of Environmental Policy
• /
• v.6 no.1
• /
• pp.111-132
• /
• 2007

The traffic noise of Busan, the second largest city in Korea, is polluting the area. Noise map is a map that shows data on an existing or predicted noise condition in terms of a noise indicator, breaches of a limit value, the number of dwellings exposed to certain values of a noise indicator in a certain area, or on cost-benefit ratios or other economic data on mitigation methods or scenarios with Geographic Information System. With noise map, the effect of traffic noise and the efficiency of city development plan are exactly estimated. So making systematic counteroffer is possible with it. This study is aimed to the construction of basis for noise map construction method for domestic use and the area focus is Busan.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.13 no.2
• /
• pp.133-145
• /
• 2010

Recently, due to advances in information technologies, the trend of tour types has been changing from package tour to independent tour. Independent tour is a tour which a traveler collect airplane ticket, travel destinations, sightseeing time, transport, lodging and plan traveling schedules by oneself. But the traveler has many difficulties for predicting tour schedules, due to lack of adequate information of travel destinations. In this study, traveling schedule prediction method which to minimize the cumulative fatigue of tourist for use of unnecessary transport is proposed using travelling salesman problem algorithm. It is considered moving time between sightseeing, sightseeing time on destination and traveling time for a day.

• Proceedings of the Korean Information Science Society Conference
• /
• 1999.10a
• /
• pp.105-107
• /
• 1999

최근 자동차 수의 급속한 증가와 대중 교통의 발달로 인하여 ITS(Intelligent Transportation System)과 같은 지리/교통 안내 시스템의 연구 개발이 활발히 이루어지고 있다. 이러한 시스템의 중요한 기능 중의 하나로 대중 교통의 관리와 안내 서비스가 있다. 특히 우리나라의 경우 아직 많은 사람들이 대중 교통을 이용하고 있고, 대중 교통이 대도시 교통체증의 중요 해결책으로 인식되므로 이러한 기능이 더욱 필요하다. 본 논문에서는 인터넷을 통하여 접근할 수 있는 버스 노선 안내 서비스 시스템을 개발한 경험을 소개한다. 버스 노선 안내 서비스 시스템은 사용자가 접근하기 용이해야 하며 실용적인 서비스 결과를 제공할 수 있어야 한다. 또한 추후 개발되는 여러 ITS 구성 요소들과 유기적으로 결합할 수 있는 상호 운용성이 필요하다. 본 논문에서는 분산 객체 미들웨어의 표준인 CORBA를 이용하여 인터넷을 통한 접근이 용이하고 상호 운용성이 뛰어난 시스템 구조를 제안하였다. 이 시스템의 구조와 스키마는 추후 다른 대중 교통 안내 서비스 시스템과의 연계 혹은 다른 ITS 구성 요소와의 연계에 쉽게 대응할 수 있을 것으로 기대된다.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.21 no.2
• /
• pp.80-93
• /
• 2018

Public transit services are generally analyzed based on the correlation of demand and supply. The computation of supply uses accessibility while demand uses travel demands estimation based on residential population. However, the traditional demand estimation has a limitation in analysing in micro-scale compared to the smartcard data traffic. This study analyzed potential improvement of public transit services using smartcard traffic data. The supply of transportation was defined using time distance accessibility. Also, time loss was calculated in those origin destination(OD) pairs where time distance accessibilities are relatively low. The proposed method was applied at Seoul. The results showed that the areas where OD pairs need improvement include Seodaemun-gu, Guro-gu and Nowon-gu.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2003.04a
• /
• pp.489-492
• /
• 2003

사회가 고도의 정보화 사회로 발전됨에 따라 효율적인 국토관리를 유지하고 발전시키기 위해 국가지리정보체계에 관한 관심이 고조되고 있고 산ㆍ학ㆍ연에서 연구가 활발히 진행되고 있다. 국내외를 막론하고 각 국에서는 21세기에는 국토관리를 디지털화하고 있다. 행정자치부에서는 지적도면전산화사업을 2005년에 완료를 목표로 추진하고 있으며, 건설교통부의 지형도전산화사업은 완료단계에 있다. 또한 가스, 전기, 통신 등의 시설물관리를 위해 수치지적도를 필요로 하는 기관에서는 독자적으로 지적도 수치화작업을 추진하고 있다. 본 연구에서는 국가지리정보체계의 일환으로 지적도면 및 지형도전산화사업의 추진현황을 파악하고 지적정보와 지형공간정보 관리의 이원화로 불편을 겪고 있는 문제점을 도출하여 연계ㆍ활용 및 개선방향을 심도 있게 파악하고 분석하여 단계적 해결방안을 제시함으로써 지적정보와 지형공간정보를 연계하여 효율적으로 이용할 수 있는 방안을 제시하였으며, 행정업무 및 국민의 일상생활에까지 지적과 지형공간자료의 연계를 통한 행정의 효율성 및 국민편익에 유익한 결론을 얻을 수 있었다.