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한수산 ( Su San Han ),박병호 ( Byung Ho Park ) 충북대학교 건설기술연구소 2012 建設技術論文集 Vol.31 No.2
이 연구는 일반국도구간의 평균속도와 속도분산을 다루고 있다. 이 연구의 목적은 속도패턴의 특성을 분석하고, 모형을 개발하는 것이다. 이를 위해 국도 36호 선의 자료를 이용하여 속도와 분산의 차이를 검증하고, 포아송 및 음이항 회귀 모형을 개발하는데 중점을 두고 있다. 주요 결과는 다음과 같다. 첫째, 구간 3의 속도분산이 가장 높은 것으로 평가되었다. 둘째, 통계적으로 모두 의미 있는 한 개의 포아송 모형과 한 개의 음이항 모형이 개발되었다. 마지막으로 속도모형의 변수로는 신호교차로 수와 종단경사(3% 이상)인 것으로 평가되었고, 속도분산 모형은 K30와 교량의 수로 분석되었다. This study deals with the average speed and speed variance of national highway. The objectives are to comparatively analyze the characteristics of speed patterns, and to develop speed models. In pursuing the above, this paper gives particular attentions to testing the differences between speed and variance, and developing the models (Poisson and negative binomial regression) using the data of National Highway Route 36. The main results arc as follows. First, the average speed was analyzed to be 66.74kph, and speed variance of section 3 was evaluated to be the most. Second, one Poisson model and one negative binomial model which were all statistically significant were developed. Finally, the chosen variables of the speed model was evaluated to be the number of signalized intersection, the longitudinal slope(3% over), and that of the speed variance model was analyzed to be the K30 and the number of bridge.
로지스틱 회귀분석을 활용한 블록단위 주차시스템의 청주사례 연구
한수산 ( Su San Han ),박병호 ( Byung Ho Park ) 충북대학교 건설기술연구소 2011 建設技術論文集 Vol.30 No.2
이 연구는 지방도시의 블록단위 주차시스템을 다루고 있다. 연구의 목적은 블록단위 주차시스템을 설명하고, 설문조사를 기반으로 이 시스템을 연구하는 것이다. 이를 위해, 특정 60명의 주민 의견을 분석하고 로지스틱 회귀모형을 개발한다. 주요 결과는 다음과 같다. 첫째, 주차공간의 없음의 수가 65%로 그룹 내에서 가장 높은 것으로 분석되었다. 둘째, 블록단위 주차시스템 모형의 Nagellerke R2 값이 0.227이고, 주차공간 유무에 따른 모형의 Nagellerke R2의 값은 0.263으로 모형 모두 유의한 것으로 분석되었다. 셋째, 두 가지 로지스틱 회귀모형의 독립변수가 개발되었다. 마지막으로 두 모형 모두 분류 정확도가 71.7%와 81.7%로 높은 정확도로 분석되었다. This study deals with the block-unit parking system of local cities. The objectives is to explain the system and to analyze the system based on the questionnaire survey. In pursuing the above, this study gives particular emphasis to studying the citizen`s opinions of 60 person and developing the logistic regression model. The main results are as follows. First, the number with no parking space was analyzed to account for about 65°c of total and to be highest among all groups. Second, Nagellerke R2 of model (for and against the block-unit parking system) was analyzed to be 0.227 and Nagellerke R2 of model (with and without parking space) was analyzed to be 0.263. Third, 2 logistic regression models which were all statistically significant were developed. Finally, the correct classification rates were analyzed to be 71.7% and 81.7%, respectively.
한수산(Han Su-San),박병호(Park Byung-Ho) 대한국토·도시계획학회 2011 國土計劃 Vol.46 No.2
This paper deals with the traffic factors related to the accident severity. The goal of the paper is to analyze the accident factors using the ordered logit models. The main results are the followings. First, the accident severity of summer is analyzed to be a little higher than other seasons. Second, the accident type and weather condition are evaluated not to be statistically significant. Third, under the dry condition and during through-traffic, the accident severity is analyzed to be higher than other conditions. Finally, the pair-wise sample t-test shows that the accident type is significantly related to the severity. This paper might be expected to give some implications to traffic safety policy-making to reduce and prevent the traffic accidents.
박병호 ( Byung Ho Park ),한수산 ( Su San Han ) 충북대학교 산업과학기술연구소 2011 산업과학기술연구 논문집 Vol.25 No.1
This study deals with the traffic accidents of elderly drivers. The objectives are to comparatively analyze the characteristics of accident between the elderly drivers and total drivers, and to develop a traffic accident model. In pursuing the above, this paper gives particular attentions to testing the differences between the above two groups, and developing the models(Poisson and negative binomial regression) using the data of Cheongju major roads. The main results are as follows. First, the number of accidents is analyzed to account for about 5% in elderly drivers and 95% in not elderly drivers. Second, one Poisson and one negative binomial model which are all statistically significant are developed using elderly drivers EPDO and total drivers EPDO as dependant variables. Finally, left turn lane as common variables, and traffic volumes, the number of pedestrian crossings, lanes, lane of bus stops, lanes of left-turn as specific variables of the elderly driver``s accident models are selected and lane of right-turn as specific variables of the total driver``s accident models is selected
박병호 ( Byung Ho Park ),한수산 ( Su San Han ) 한국안전학회(구 한국산업안전학회) 2012 한국안전학회지 Vol.27 No.6
This study deals with the traffic accidents by weather condition. The objectives are to comparatively analyze the characteristics, and to develop the models of traffic accidents by weather condition. In pursuing the above, this paper gives particular attentions to testing the differences between two groups, and developing the models(Poisson and negative binomial regression) using the data of domestic circular intersections. The main results are as follows. First, three Poisson models and one negative binomial models which were all statistically significant were developed using the number of accident and EPDO by the clear weather and other as the dependant variables. Second, the differences bet-ween two models were comparatively analyzed using the chosen variables. This paper might be expected to give some implications to traffic safety policy-making to reduce and prevent the traffic accidents in circular intersections.