• Transportation Technology and Policy
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• v.5 no.1
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• pp.161-171
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• 2008

아시아의 도시교통사고는 빠른 인구증가와 경제성장으로 인한 자동차 보급 확대로 인해 OECD 국가에 비해 2${\sim}$3배 높은 수준으로 교통사고절감을 위한 대안 마련이 시급한 실정이다. 이에 본고에서는 ITS기반 도로교통 안전시스템의 정착을 통해서 아시아 도시의 공통된 교통안전문제를 해소하기 위한 공동대응방안을 제시하고 있다. 이를 요약하면, 첫째, 도로사고와 ITS관계를 규명하고 사고요인을 도로상에서 제거할 수 있는 ITS기술을 소개하였다. 교통사고원인의 95%가 운전자관련인자로 나타나 운전자관련 ITS요소기술(HMI 등)의 개발이 시급한 것으로 나타났다. 또한 현재 도로 안전분야에서 적용 가능한 실용기술로는 돌발상황관리시스템, 충돌경고시스템, 비상연락시스템, 단속시스템 등인 것으로 판단된다. 둘째, ITS기반 도로교통 안전시스템의 조기 정착을 위해서는 기존 조직 법 제도의 정비가 필요하다. 아시아 도시에서는 ITS 도입 초기 정부주도형으로 추진하는 것이 바람직한데, 이를 위해서는 정부조직 내 ITS 전담기구 (Headquarter)를 신설하고, 도로안전 ITS관련 법령 및 ITS Master Plan에 근거한 권한과 사업, 예산을 확보해야한다. 또한 인프라 및 ITS 구축 운영과 함께 RSA(Road Safety Audit)와 같은 선진안전제도 시스템을 벤치마킹하여 국내 현실에 맞도록 접목시켜 나가야한다. 셋째, 교통관제 (광역)정보센터, 버스센터, 구간속도단속 등 혁신적인 도로안전사업을 지속적으로 발굴 확충하여 노하우를 축적해야 한다. 넷째, 아시아 도시의 공통된 교통문제를 해소하기 위한 공동대응방안을 마련하기 위하여 각국의 노하우를 전파하고 공유하는 창구로 아시아 태평양지역 ITS포럼을 더욱 육성해야 하겠다.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.430-438
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• 2020

Many local governments are reducing speed limits according to the "Safe Speed 5030" policy implemented by the government to reduce traffic accident deaths. In the urban road sections in many metropolitan cities where speed limit reduction is applied as a pilot project, the decrease effect of the traffic accident number and death count is shown; however, no study of the effect analysis on the road sections of medium and small cities (basic local government unit) is found. Therefore, this study investigated the travel speed, number of traffic accidents, and death count before and after the implementation of speed limit reduction, targeting some urban road sections in Pyeongtaek city and some provincial road sections in Icheon city among basic local governments, namely among medium and small cities in Seoul Metropolitan Area.

• Communications of Mathematical Education
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• v.19 no.2 s.22
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• pp.435-444
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• 2005

본 연구에서는 수학성취도에서의 불평등도를 모색하였다. 구체적으로 경제적인 불평등도로서 널리 사용하는 지니계수를 활용하여 학업성취에서의 불평등도를 계산하였고, 불평등성에 대한 언어적 해석의 기준을 마련하였다. 자료 분석 결과는 농촌지역보다는 중소도시, 중소도시보다는 대도시, 대도시의 일반고 보다는 과학 고등학교에서의 불평등도가 약하게 나타났다.

• Journal of Korean Society of Transportation
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• v.25 no.2 s.95
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• pp.83-93
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• 2007

Pedestrians and vehicle users should be treated with equal importance in urban street design. However, current street design suggests that the design criteria for sidewalks is based on the functional hierarchy of the vehicles, therefore it is necessary to develop sidewalk design standards that give more weight to pedestrians rather than vehicles. For this, this study suggests that the level of service of pedestrians should be considered in the process of designing sidewalks. Currently, level of service (LOS) criteria for pedestrians in the Korean Highway Capacity Manual are based on pedestrian volume, but the volume of pedestrians is seldomly estimated in practice. So, the current LOS criteria has limitations in terms of practical use. Also, the study assumes that the pedestrian flow rate is hardly the dominant factor that could affect the LOS of pedestrians at most urban sidewalks. In this context, the study considers a new LOS for sidewalk design based on the comfort of pedestrians while passing pedestrians coming from the opposite direction. Then the study attempts to link the new LOS criteria to the land use patterns using data of pedestrian traffic characteristics acquired from the field. In addition to this, the scope in which the suggested criteria can be applied is suggested.

• Journal of Korean Ophthalmic Optics Society
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• v.21 no.2
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• pp.147-152
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• 2016

Purpose: This study was designed to be used as the basic visual function data after analyzing and investigating the refractive errors variation between city and rural elementary school children. Methods: To compare with city and rural areas, 2501 elementary school children who lived in Mokpo, Yeongam, Muan, Hampyeong were participated. Objective refraction, Subjective refraction and binocular function examinations were measured. Results: Mean of refractive error of rural areas was -1.47 D in 2012 years, -1.52 D in 2013 years, and -1.40 D in 2014 years. However average of refractive error was -1.65 D in 2012 years, -1.76 D in 2013 years and -1.75 D in 2014 years who lives in city areas. Average myopia was showed higher who lives in rural areas elementary school children than city areas elementary school children. There were significant differences between rural areas and city areas elementary school children (p = 0.03), but there were no significant differences by averagre hyperopia (p = 0.32). Average myopia was showed the tendency of increase as the students get older by analysis compare with rural and city areas elementary school children. It also showed high prevalence of myopia who lives in city areas elementary school children compare with lives in rural areas elementary school children. Conclusions: It is the very important to performed regular visual acuity test and correction during the largest refractive change period and it is necessary to have experts in the visual acuity test.

• 한국도로학회지:도로
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• v.15 no.4
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• pp.9-13
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• 2013

• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.511-521
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• 2019

This study is designed to define the smart city as the platform for digital social innovation, and acquire the evaluation indicator for objectively diagnosing domestic cities from the perspective of the implementation process and capability of smart city and analyze its importance. Through prior studies and in-depth interview with experts, candidate groups for evaluation indicators were acquired and the conformance test(T-test) was conducted to finally select 16 detailed indicators in 4 fields. The importance of the evaluation item was found to be high in the policy and system, followed by innovation infrastructure, citizen's participation and infrastructure. The analysis of the 16 detailed indicators for importance showed that the willingness of conducting the smart city by the head of local government, construction of organization dedicated to the smart city have the highest importance. This may reflect the fact that in domestic cities, the smart city is sponsored by public organizations. The analysis of the importance of expert groups (local government and Private sector groups) found that both groups recognized that politics and systems are important factors but they varied in the recognition of importance in the innovation infrastructure and citizen's participation. This study has implication as the indicator for smart city from the perspective of digital social innovation can be acquired for use of the domestic cities and that it can give basic and objective data for the priority of policies on which the domestic smart cities shall focus.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.17 no.2
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• pp.32-38
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• 2018

Studies on classification of national roads have been continued, but there is little research on the classification of urban arterial roads. Due to the increase of traffic volume, urban arterial roads do not perform well as main roads. In this paper, the function of urban arterial road was established by using cluster analysis using traffic characteristics. Traffic characteristics such as traffic volume, weekend coefficient and speed coefficient were used to establish the functions of 55 main arterial roads in Seoul. The results of this paper are compared with those of the method using AADT. The method using AADT classifies the characteristics according to the traffic volume of the whole lane. In this paper, however, the results are derived using the traffic volume per lane reflecting the actual traffic volume. In addition, the functional classification of the arterial roads in Seoul was compared with the results of this paper to verify that the traffic characteristics were reflected. As a result, the method presented in this paper is more effective in showing traffic characteristics than the current highway functional classification method, and the functional classification system will be helpful for road extension and planning design.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.80-82
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• 2020

최근 자율주행차량의 기술 개발이 확대되면서 이를 기반으로 운전자, 인프라 등 다양한 관점에서 효과를 기대할 수 있는 군집주행에 대한 관심도 점차 높아지고 있다. 현재 고속도로에서만 적용 가능한 군집주행 기술이 상용화 되면서 교차로가 많은 도시 도로 환경에서도 이를 적용하기 위해 여러 자동차 업체에서 시스템을 개발 중이다. 하지만 기존 군집주행 방식은 군집이 해체될 경우 차량이 다시 군집을 형성하고 다른 군집에 가입하는 과정에서 발생하는 시간이나 비용적인 측면에서 도로 처리량과 시간 단축이라는 본래 군집주행의 목표에 미치지 못한다. 따라서 본 논문은 차량 간에 주고받는 메시지를 개선하여 군집주행 알고리즘을 새롭게 설계해 도시 도로 환경에서도 적용 가능한 동적 군집주행에 대해 제안하였다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2009.04a
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• pp.297-298
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• 2009

지능화된 도시시설물 관리를 위해서는 상하수도, 가스, 난방 등 지하시설물 및 교량, 도로 등 지상시설물에 대한 관리시스템을 유기적으로 연계하고 상호운영성의 기반위에서 통합 운영환경을 제공할 수 있는 '지능형 도시공간정보 플랫폼'이 필요하다. 도시공간정보 플랫폼은 도시내 다양한 센서 단말 등으로부터 정보를 수집하고 이를 모니터링 및 분석하여 도시관리 및 정보제공 서비스를 수행하는 시스템이다. 본 연구에서는 도시공간정보 플랫폼에 대한 사용자 요구사항을 분석하고, 이에 따라 플랫폼을 구성하는 세부기능을 정의하였으며, 이를 종합하여 도시공간정보 플랫폼 모델을 제시하였다.