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급행지하철 도입에 따른 승객통행시간 절감효과에 관한 연구
김경철(Kim Gyeng-Chul),김원호(Kim Won-Ho) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
Express subway system is one of the effective systems adapting to improve service level. Express trains make fewer passenger stop, using a double track or a bypass track, than local trains which served all stations. Express service has been very popular with passengers who travel uninterrupted between terminals, but is has generated some dissatisfaction among passengers who experience longer waiting time on stations. This study aims at proposing the methodology to analyze changes of travel pattern in subway system adapting the express service and to estimate the time saving effects resulting from the installation of the express system. This methodology is evaluated in the fifth line under an assumption that express subway system are adapted. Based on the results of the case study, the following conclusions are made : First, express system reduce a total travel time of 13% or above. Second, shorter headway of express trains increases the time saving effects on subway system, although it requests more waiting time to local train passenger. Third, an installation of Express system to Seoul subway system can augment subway demand in Seoul metropolitan area.
서울시 수송부문 CO2 배출 변화요인 및 감축잠재량 분석
김경철 ( Gyeng Chul Kim ),황인창 ( In Chang Hwang ) 서울시정개발연구원 2008 연구보고서 Vol.2008 No.48
Emissions of carbon dioxide fell by 12% between 1990 and 2004 in Seoul. However, emissions from transport rose by 74% during the same period. Road transport currently accounts for 81% of total CO2 emissions from transport in Seoul. Thus, road transport is one of the key sectors in which policy change is needed to meet the reduction target for CO2 emissions set under Seoul Energy Declaration (2007). This study investigates what were the key driving forces for the trend of CO2 emissions from road transport between 1990 and 2006 in Seoul and projects future CO2 emissions based on various scenarios. This report breaks down determinants of changes in CO2 emissions from road transport by using LMDI decomposition analysis, According to the analysis result, driving distance per person was a dominant forces for the growth of emissions over the past 16 years. Among the various factors, increase of car usage and decrease of car occupancy rates mainly contribute to the growth of driving distances. Carbon intensity factors such as fuel efficiency and fuel substitution partly cancelled out the growth of CO2 emissions due to the growing driving distances. This study also produces and compares several scenarios under various assumptions regarding changing patterns in affluence and technology factors, According to the outcomes, to meet the reduction target for CO2 emissions set under Seoul Energy Declaration from road transport seems very difficult even under the most optimistic scenario, In order to reduce the negative effects of road transport regarding climate change, Seoul needs to create and use much more stronger policy measures.
김경철(Kim Gyeng Chul),고주연(Kho Joo Yeon) 한국철도학회 1999 한국철도학회 학술발표대회논문집 Vol.- No.-
Park and Ride(P&R) system has not implemented it"s intended object in Seoul metropolitan area, still less it didn"t impact on diminishing the ridership of urban railway. This paper is focused on analysis of Park and Rail ride user survey of travel behavior and trip chain. We propose the ideal location of P&R in Seoul and stratagies to increase the utilization of P&R.
수도권 교통축별 도시철도와 간선도로 승용차 이용자 통행속도 비교연구
김양지(Kim Yang-Ji),김경철(Kim Gyeng-Chul) 한국철도학회 2001 한국철도학회 학술발표대회논문집 Vol.- No.-
The arm of this study is to compare the travel time of urban railway with that of arterial roads in the Seoul metropohtan area, focusing on the five main railways and arterials - Ilsan, Bundang. Kwacheon, Kyoungwon, and Kyoungin in order to make suggestions about improvements of railways. We found that the travel times of railways and arterials are about one and a half hour and an hour respectively, also the ratio of railway travel time to arterial travel time is 1.34 at peak and 1.58 at off-peak. We conclude that the competitiveness of the railroads is lower than the arterials. It will be necessary that we research the ways to improve the service of railways and investment ranking among the five main railways.