• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.23 no.4
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• pp.345-352
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• 2005

In up-to-date information anger time it is caused by with business of traffic accident control and analysis and two time it accomplishes a business. National Police Office which controls a traffic accident does not execute an up-to-date technique. And, it is working yet by the hand, There is to traffic accident analysis and the research regarding the analysis against the research which it follows in geography element and composition element and an accident cause is weak. Consequently, effectively establishment and it enforces a traffic safety policy and from the hazard which it evaluates traffic accident data the system and scientific analysis against a traffic accident occurrence cause and a feature in basic must become accomplished. The research which it sees constructs a traffic accident data in GIS base. It is like that, it uses the PDA where is not the collection of data of text form in existing and at real-time it converts store and an accident data rightly in standard traffic accident data form and it will be able to manage. It was related with a space data peculiarity and the research regarding the system development with the geography analysis data about an accident cause under manifesting it accomplished.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2009.04a
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• pp.291-292
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• 2009

항공레이저측량(LiDAR)는 대상물에 반사되어 오는 레이저를 이용하여 멀리 위치한 대상물의 정보를 측정하는 광학원격탐사기술이다. 항공기에 레이저센서를 장착, 지표면에 레이저 펄스를 주사하여 반사된 펄스의 도달시간을 측정, 반사지점의 3차원 위치좌표를 계산하여 지표면의 정보를 추출한다. 항공레이저측량(LiDAR)는 재난재해관리, 도로 및 교통, 시설물계획관리, 지역지구 계획 등에 활용할 수 있다. 또한 항공사진과 GIS를 활용함으로서 실세계의 3차원 표현이 가능하며 실세계를 인터넷, PDA 및 핸드폰 등에 3차원으로 표현하는데 필요한 데이터베이스를 제공할 수 있다. 이는 도래하는 유비쿼터스 시대에 필요한 정확하고 정교한 데이터기반을 구성한다.

• 정보화사회
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• s.110
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• pp.48-55
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• 1997

지하매설물이란 땅속에 묻혀있는 상수, 하수, 전기, 통신, 전력 등 도시기반시설을 의미하며, 지상시설물에 비해 관리가 어렵고 예기치 않은 사고로 인해 많은 재산상, 인명상 피해를 입힐 가능성을 안고 있다. 우리는 서울 아현동과 대구에서의 대형 가스폭발사고, 도로굴착공사가 끝난지 얼마 안되는 지점에 또다른 매설물의 매설 또는 유지보수를 위해 중복공사가 일어나 교통에 혼잡을 유발하게 되는 경우를 빈번하게 경험하면서 도시의 동맥역할을 하는 이러한 지하매설물에 대한 체계적 관리가 시급함을 실감하게 된다. 특히 선진외국에서 GIS를 도입하여 지하매설물을 데이타베이스화하고 지하매설물 관리체계를 개발하여 지하매설물을 체계적으로 계획하고 관리하며, 대형사고를 사전에 예방하고, 사고가 일어난 경우에는 GIS를 활용하여 보다 신속하게 대처함으로서 피해를 최소화하는 실정을 감안할 때 GIS도입이 이러한 매설물에 대한 체계적 관리를 가능하게 하는 방안으로서 적극적으로 검토되어야 함을 느낀다. 본 글에서는 첫째, 이러한 지하매설물의 관리실태와 문제점을 분석하고 둘째, 현재 국가 및 서울시에서 추진 또는 계획 중인 지하매설물 관리체계 구축사업내용과 셋째, 지하매설물 데이터베이스가 어떻게 구축되고 유지.관리되어야 할 지에 대하여 간략히 살펴보고자 한다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.23 no.3
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• pp.293-301
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• 2005

In case of the roads that pass the mountain area, the cut sections or the tunnels are constructed. And In winter season it appears sunshine few in the specific segment, the shade is continued last and the freezing sections occur. So, the attention is necessary in traffic safety. This study was to evaluate the influence of sunshine and surface freezing sections expected in route plans of roads using GIS and makes alternative ideas in road stability security. After selecting 29 km sections of Donghae highway and creating a 3 dimensional terrain surface through the digital conversion of design plan data, it reflects the road alignment data of the same coordinates and a 3 dimensional road modeling is created. It set shadow time of road surface for the solar trace in the winter solstice in 20 minute interval. Shade areas are displayed and inputed in polygon data by manual vertorizing. Graphic and attribute data of this shade section is constructed in geodatabase of ArcCatalog. And it extracted the freezing section using intersect fuction of the GIS spatial analysis. By analyzing the winter meteorological data of temperature, rainfall, snowfall, humidity, and etc. and grasping dangerous freezing section of the road surface effectively, it will be able to make alternative ideas of the preliminary stability evaluation reflected in basic design.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.11 no.6
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• pp.40-48
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• 2012

In this paper, we suggests methods for determining optimal representative value and the optimal size of historical data for reliable travel speed prediction. To evaluate the performance of the proposed method in real world environments, we did field tests at four roadway links in Seoul on Tuesday and Sunday. According to the results of applying the methods to historical data of Central Traffic Information Center, the optimal representative value were analyzed to be average and weighted average. Second, it was analyzed that 2 months data is the optimal size of historical data used for travel speed prediction.

• Journal of the Korean Association of Geographic Information Studies
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• v.10 no.1
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• pp.92-101
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• 2007

Urban freight system includes not just intra-urban freight movement but also inter-urban movement as well. Hence, to make Busan a hub of North-east asia freight movement it is necessary to develop a comprehensive plan for infrastructure expansion as well as improvement of freight system based on the present facility situation. This study identifies the status of freight facilities in Busan by establishing the freight related infrastructure Database(DB) utilizing Geographic Information System(GIS), and to enable planners and decision-makers to utilize the DB to develop a future plan. The DB includes port facilities, major and minor arterial roads, railroad lines and facilities, depots, center city business areas, and urban infrastructures which are related to the freight movements. The analyses show that major transportation facilities in Busan consist of roads, railroads, coastal transportation, and international transportation, and it was found that intermodal facilities are inadequate for freight system in Busan. The results of this study will be useful for freight experts and planners to develop a comprehensive freight system plan.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.933-936
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• 2006

비점오염원은 특정한 시설이나 장소를 나타내기 보다는 농지에 살포된 비료 및 농약, 대기오염물질 강하물, 축사에서의 유출물, 도로상에 쌓인 교통오염물질, 하수관거에서 유출되는 하수 등으로 강우시 빗물과 함께 유출되는 오염물질로 정의되며, 비점오염물질을 발생시키는 곳은 비점오염원으로 규정하고 있다. 비점오염원은 경제활동수준이 증가하고 토지이용이 고도화될수록 수질에 미치는 영향이 커지게 되며, 점오염원의 부하가 줄어들수록 비점오염원에 의한 부하비율은 증가하게 된다. 따라서 비점오염에 대한 체계적인 관리 없이 하천이나 호소 수질을 개선하는 데는 그 한계가 있다. 또한 체계적인 관리 이전에 적절한 비점오염원의 해석이 무엇보다도 중요하므로 본 연구에서는 적절한 비점오염원 모형 검토를 선행하였다. 가용 자료의 존재 여부 및 해석 시 사용하는 방정식 등을 고려하여 선정한 모형은 USDA-ARS(US Department of Agriculture-the Agricultural Research Service)에서 개발된 SWAT 모형으로 본 연구에 이용되었다. SWAT 모형에 이용되는 자료는 크게 유역자료, 강우자료, 기상자료, 검정에 이용되는 유량 및 오염물질 농도로 분류될 수 있다. 본 모형에 이용되는 광범위한 자료를 수집하여 해석을 수행하였다. 비점오염원 해석의 검보정을 위해 점오염원의 영향이 크지 않은 소유역 유출지점을 선정하여 해석하여 비교적 합리적인 결과를 도출하였다. 차후 연구에서 보다 합리적인 해석을 위해 데이터베이스의 재검토가 절실한 것으로 판단된다.

• Journal of the Korean Association of Geographic Information Studies
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• v.15 no.2
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• pp.139-149
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• 2012

Flooding caused by torrential rains and landslide causes the deaths of people and property damage as well as traffic congestion and isolation. Driver enters the dangerous area when driver doesn't recognize disaster information on the road and the damage is spread over time. In this paper, we will develop a smart phone application to collect dangerous disaster area information and a system based on C/S to manage the data received from the smart phone application. This system can analyze dangerous disaster areas using the data received from the smart phone application and the spatial database analyzed dangerous disaster areas is displayed in the smart phone application using a map server. We think that the suggested system provides more efficient information to user.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.8
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• pp.1843-1850
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• 2004

If the location information of a great number of cars kept for business with telematics terminals is acquired and managed efficiently, this information forms the foundation for controlling cars and traffic flows. The studies on the pure spatial indices have focused on the efficient retrievals. However, the acquisition and management of the terminal location of moving objects are more important than the efficiency of the query processing in the moving object databases. Therefore, it will be need to adopt parallel processing system for the moving object databases which should maintain the object's current location as precise as possible. This paper proposes a location management system using CDMA communications of telematics terminals. More precisely, we propose a architecture of spatial indexing mobile objects using multiple processors, and also newly propose a method of splitting buckets using the properties of moving objects in order to minimize the number of database updates. We also propose a acquisition method for gathering the location information of moving objects and passing the information of the bucket extents in order to reduce the amount of passed messages between processors.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.3
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• pp.69-74
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• 2014

Numerious agencies are trying to install many surveilance systems in their jurisdiction. A mashup,is a page, or application, that uses content from more than one source to create a single new service displayed in a single graphical interface. The main characteristics of a mashup are combination, visualization, and aggregation. It is important to make existing data more useful, for personal and professional use. To be able to permanently access the data of other services, mashups are generally client applications or hosted online. This study is utilizing mash-up technology to provide suitable location scheme for monitoring and surveilance system in order to utilize existing infrastructure and to provide better service to the public.