• 대한교통학회지
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• 제4권1호
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• pp.28-40
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• 1986

Accurate subway demand estimation which is essential for better route selection can be achieved by the exact definition of the influence sphere of subway station. The influence was derived implicitly from the analysis of access time to the station for the cases of Seoul. Access time distribution was investigated by trip purposes, by age, by income, by sex, by travel distance, by kinds of thickets, by the location of station for the analysis of relationship between access time and socio-economic characteristics or urban structure. The difference of average access time between direct access trip and transfer trip which is found 8.6 minutes and 6.1 minutes respectively also investigated. The small difference implies poor transfer system of Seoul subway. 83.1% of subway users are coming from the distance of 10minutes' walk and average access time is 7.8minutes as a whole.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 춘계학술대회 논문집
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• pp.1084-1092
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• 2005

Various urban transport policies have an effect on urban transit riderships. This study reports variations of metropolitan subway travel patterns affected by an enormous change in bus routes and transfer discount policy between subway and bus mode conducted by Seoul city in July 1st of 2004. In an effort to see the difference between the before and the after policies, two datasets are prepared. Firstly, on a daily bassis, an origin-destination trip table of May of 2004 is used. Secondly, on a daily bassis, an origin-destination trip table of August-September of 2004 is used as a counter measure. Even if seasonal variation was not considered. there were increasing riderships of about 0.25 million on a daily basis. Subway line 2 and 7 have an important role in changes. The effects or system changes, however. largely varied on location and subway line numbers.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2008년도 추계학술대회
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• pp.51-56
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• 2008

Many people transfer from the automobile to the subway because of increasing in oil price and improvement of mass transit system of Seoul Metropolitan City. But Seoul Metropolitan Subway have brought out passengers discomfort because it is more crowded over the appropriateness because of very high utilization though it is highly technically facilitated. This study deals with the development and simulation study of subway train simulator. We analyzed the simulation results considering crowdedness after we defined the concept of crowdedness.

• 한국IT서비스학회지
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• 제17권4호
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• pp.139-150
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• 2018

This paper investigated the human distribution in subway station areas in Seoul, using geotweets and subway ridership data. Eight stations were selected from the districts of Gangnam and Gangbuk. Geotweets located within a 600-meter radius of the central coordinates of each station were extracted, and distances between the center of station and each tweet location were calculated. Donut-shaped dimension and pie-shaped dimension were generated, using the Haversine distance formula and the Azimuth angle formula respectively. By combining the two dimensions, Dartboard-shaped space division is created. Popular places within the subway station areas identified from this research are almost the same as the current well-known popular places, and this is an important case showing that people send tweets from various places where they engage in daily activities. We expect this study can be a methodological guideline for social scientists who use spatio-temporal or GPS data for their research.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 춘계학술대회 논문집
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• pp.42-47
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• 2005

When the train travels quickly, in the center of city subway tunnel the strong wind blows caused by its piston effect, and the train wind blows while train enter the subway station with this effect. The train wind brings unpleasantness which passenger's hair wavering and the skirts of passengers flapping severely, and critical situations to the old and the weak people. It considers seriously like this, the research is meant to find extent of subway train wind influence on the passengers from the part Seoul subway stations.

• Asian Journal of Atmospheric Environment
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• 제9권2호
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• pp.165-172
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• 2015

Under a very tough situation that there has been increasing concern to the air quality in underground subway spaces, this study set sights on the thorough estimation of the chemical properties and source apportionment of particulate matter (PM) collected on an underground subway platform by a cooperative approach of semi-bulk and single particle analyses. The size-resolved PMs were intensively collected on the platform of Miasageori station on the Seoul Subway Line-4, and then, they were semibulkily analyzed by a PIXE and the TOR$^{(R)}$ method, and individually analyzed by a SEM-EDX. Overwhelmingly enriched iron was a notable feature of elemental concentration of $PM_{2.5}$. Source classification of iron in $PM_{10-2.5}$ and $PM_{2.5}$ performed along with their elemental concentrations, indicates that the railway originated iron accounts for 95.71% and 66.39% of total iron in $PM_{10-2.5}$ and $PM_{2.5}$, respectively. Via a stoichiometric categorization, $Fe_2O_3$, $CaAl_2Si_2O_8$, $Al_2O_3$, and $CaCO_3$ show more than 85% abundance ratio in individual coarse particles. The result of theoretical estimation of the subway derived organic carbon ($OC_{Subway}$) suggests that $OC_{Subway}$ in $PM_1$ and $PM_{2.5-1}$ account for 75.86% and 51.88% of total organic carbon, respectively.

• 조명전기설비학회논문지
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• 제18권3호
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• pp.40-47
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• 2004

최근 다양한 용도로 활용되고 있는 지하철 역사는 새로운 거주공간으로 주목되고 있다. 그러나 지하철 역사는 지하공간으로 인한 폐쇄성 및 사용자의 심리적 거부감을 완화시키기 위해 자연광의 유입이 필요하다. 본 연구는 자연광이 도입된 지하철 역사와 인공조명으로 계획된 역사를 대상으로 조명환경 실태 및 실내 시환경을 평가하였다. 이를 위해, 먼저 선정된 지하철 durg사의 현장측정을 자연광의 영향이 적은 담천공에서 실시하였다. 또한, 사용자를 대상으로 주간에 설문조사를 실시하여 실내 시환경에 대한 조명인식을 평가하였다. 연구결과, 지하철 역사의 시환경에 대한 자연광의 영향 및 출입구 부분에 완화조명이 필요한 것으로 분석되었다. 본 연구결과는 앞으로 보다 효과적인 지하철 역사 조명계획을 위한 기초 활용될 수 있으리라 기대된다.

• 한국ITS학회 논문지
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• 제21권6호
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• pp.146-164
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• 2022

최근 정부에서는 수도권 주요거점을 30분대에 연결하기 위해 광역급행철도 건설을 추진하고 있으며, 광역급행철도의 정거장은 대부분 기존 노선과 환승역으로 연결되어 환승에 대한 중요성이 증가하고 있다. 환승저항이 경로선택에 미치는 영향에 관한 많은 연구가 이루어져 왔으나, 대부분 일반 지하철을 대상으로 하여 광역급행철도의 환승행태에 관한 연구는 전무한 실정이다. 이에 본 연구에서는 수도권의 대표적 급행노선인 신분당선을 대상으로 환승행태 분석을 수행하였다. 통행량 집중정도와 요금지불 유무에 따른 환승행태 분석을 위해 요일, 시간대, 이용자 특성에 따라 데이터를 구분하여 경로선택모형을 구축하였다. 분석 결과, 광역급행철도 이용자는 환승이동시간에 비해 환승대기시간에 큰 저항을 가지며, 특히 첨두시간대에는 환승대기시간의 차내시간 한계대체율(EIVM)은 3.51배로 나타났다. 본 연구에서 광역급행철도 환승 1회당 EIVM은 2.6분으로 분석되었으며, 일반 지하철을 대상으로 한 선행연구의 결과에 비해 현저히 낮은 값이다. 이는 일반지하철과 광역급행철도의 환승저항에 차이가 존재하며, 지하철 교통수요 예측 시 일반지하철과 광역급행철도 환승페널티를 차등 적용할 필요성이 있음을 시사한다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제16권3호
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• pp.316-323
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• 2010

서울 수도권의 지하철 교통망에서 승객들의 흐름을 찾아내는 방법을 제안하고 지하철의 주요 링크상의 승객 흐름을 분석한다. 교통망은 정점(vertex), 간선(edge), 그리고 승객 흐름으로 구성된다. 정점은 각 지하철역을 표시하고, 간선은 역과 역 사이를 연결한 지하철 링크를 표시하고, 승객이 승차역에서 하차역까지 최단 경로로 이동하면서 통과된 간선 위에 승객 흐름이 만들어진다. 본 논문에서는 지하철 승객들의 대용량 교통카드 트랜잭션 데이터베이스로 부터 지하철 교통망의 각 링크의 흐름을 계산해내는 새로운 알고리즘을 개발하였다. 500만 건 이상의 지하철 승객의 교통카드 트랜잭션에서 제안된 알고리즘으로 승객 흐름을 찾아내어서, 4개의 주요 지하철 랭크상의 통행 행태는 승객 흐름으로 분석되었고 모든 링크들 중에서 상위 10개 흐름을 테이블로 설명하였다.

• 한국철도학회논문집
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• 제10권4호
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• pp.420-430
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• 2007

It is reported that many users of the subways in Seoul are not currently satisfied with the subway services. The cause of the dissatisfaction is that the qualitative items and indexes are not considered properly, and also does not diversify the evaluation items to follow the change of subway environment. Therefore in this study the evaluation items and indexes that can reflect of the subway users' characteristics are examined and synthesized. Then the characteristics of service are analyzed for the senior subway system users and junior subway system users that are classified with the cluster analysis. The result of the study is that the majority of users on subway are not satisfied the qualitative items which are safety, kindness, comfortableness, convenience excepting for punctuality and accessibility. So, if the service of subway users improve, the qualitative items is needed to consider with quantitative items.