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- 저자 : 전인우 ( In-woo Jeon ) (검색결과 6 건)
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스마트카드 자료를 활용한 대중교통 승객의 통행목적 추정
전인우 ( In-woo Jeon ),이민혁 ( Min-hyuck Lee ),전철민 ( Chul-min Jun ) 한국지리정보학회 2019 한국지리정보학회지 Vol.22 No.1
The smart card data stores the transit usage records of individual passengers. By using this, it is possible to analyze the traffic demand by station and time. However, since the purpose of the trip is not recorded in the smart card data, the demand for each purpose such as commuting, school, and leisure is estimated based on the survey data. Since survey data includes only some samples, it is difficult to predict public transport demand for each purpose close to the complete enumeration survey. In this study, we estimates the purposes of trip for individual passengers using the smart card data corresponding to the complete enumeration survey of public transportation. We estimated trip purposes such as commute, school(university) considering frequency of O-D, duration, and departure time of a passenger. Based on this, the passengers are classified as workers and university students. In order to verify our methodology, we compared the estimation results of our study with the patterns of the survey data.
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비상체의 고속 충격을 받는 시멘트복합체의 혼입 단섬유에 따른 파괴저감특성 분석
전인우 ( In Woo Jeon ),김규용 ( Gyu Yong Kim ),최경철 ( Gyeong Cheol Cheo ),김홍섭 ( Hong Seop Kim ),김정현 ( Jung Hyun Kim ),한상휴 ( Sang Hyu Han ) 한국건축시공학회 2014 한국건축시공학회 학술발표대회 논문집 Vol.14 No.2
Flexural stress and fracture energy of fiber reinforced cementitious composites is increased by bridge effect of reinforced fiber, scabbing failure is restrained. Shape, properties of fiber were SF(steel fiber), PA(polyamide), NY(nylon) have effects on flexural stress and fracture energy, impact resistance improve of fiber reinforced cementitious composites. In this study, local failure properties by impact of high velocity projectile was analyzed by mixing 3 types of fiber which have different shape and properties respectively.
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이민혁(Lee, Min Hyuck),전인우(Jeon, In Woo),전철민(Jun, Chul Min) 대한공간정보학회 2019 대한공간정보학회지 Vol.27 No.5
본 연구에서는 상대적 시간거리 기반 대중교통 접근성 지표를 제안한다. 특정 경로의 상대적 시간거리란, 동일한 거리 급간에 속한 모든 경로의 평균 이동시간 대비, 해당 경로의 이동시간이 갖는 편차를 의미한다. 임의의 한 지역의 대중교통 접근성은, 해당 지역을 기점으로 하는 모든 경로의 상대적 시간거리를 합산하여 산출된다. 본 연구에서는 서울시 대중교통체계에 대한 시간거리 접근성을 분석하며, 이를 위해 버스, 지하철, 환승 등을 포함한 약 1억 2천 건의 all-to-all 대중교통 최소 이동시간 경로를 분석하였다. 본 연구에서 제안하는 지표는 절대적인 이동시간 대신 노선의 이동성을 고려하기 때문에, 도시 중심부는 기존 연구사례와 유사한 경향을 보였지만, 일부 외곽지역에서도 높은 접근성이 나타나는 연구결과를 보였다. In this study, we propose a public transport accessibility index based on relative time-distance. The relative time-distance of a specific path means the deviation of travel time of that path for the average travel time of all paths belonging to the same distance class. The accessibility of one area is calculated by summing the relative time-distances of all the paths departing from that area. We computed approximately 120 million all-to-all paths including bus, urban railway, and transfer to analyze the time-distance accessibility of public transport in Seoul city. Since the index based on relative time-distance considers the mobility instead of absolute travel time, the results of the city center were similar to previous studies, but also showed high accessibility in some outskirt areas.
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이민혁(Lee, Min Hyuck),전인우(Jeon, In Woo),전철민(Jun, Chul Min) 대한공간정보학회 2020 대한공간정보학회지 Vol.28 No.3
본 연구에서는 스마트카드 빅데이터를 이용한 대중교통 수요 추정 기법을 제안한다. 스마트카드 데이터에 기록된 익명의 승객들을 에이전트로 활용하여, 노선 조정 이후의 정류장 및 노선 단위 수요를 분석한다. 각 에이전트는 버스, 지하철 등의 복합수단과 500m 이내 도보 환승을 고려한 최소 통행시간 경로에 배정된다. 본 연구에서는 스마트카드 데이터에서 약 120만 명의 승객을 추출하여 실제 노선 신설 사례에 대한 수요 추정 시뮬레이션을 수행하였다. 검증 결과, 노선의 일 평균 수요 및 정류장 단위 수요가 매우 유사하게 나타났고, 1인당 약 5분 이상의 통행시간 감소가 예측되었다. In this study, we propose a method for estimating public transport demand using the smart card big data. It is an agent-based model that can analyze demand by route and station level. Each agent is assigned to the minimum travel time path considering multi-modal and transfer within 500m. The simulation of an actual route adjustment case was performed using about 1.2 million passengers extracted from the smart card data. When compared with validation data, the average daily demand of that route and the demand per station were very similar. In addition, a decrease in travel time of more than 5 minutes per passenger was predicted.
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FactoryCAD를 이용한 우편집중국 등기 작업장 설비 배치 개선
이해원,전인우,김기동 江原大學校 産業技術硏究所 2005 産業技術硏究 Vol.25 No.A
In the future, the sorting machines will be taken charge of the most part of the letter sorting operations. At present, in order to deliver the sorted letters by the next day, many labors are intensively committed in the letter sorting operations. This research analyzes the problem of the facilities layout in registry department of mail center. It presents an improved design of facilities layout in comparison with several alternatives including the current layout using AutoCAD and FactoryCAD. It presents the optimized facilities layout using the algorithm which is embedded in the FactoryOPT. By the result of this research, we expect that the productivity of sorting letter will be improved and the related total labor cost will be minimized.
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김기동,전인우,김태현 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.B
The shipbuilding scheduling has many possible alternatives because of its long time horizon and a lot of jobs, so it is required that the scheduling system can generate and search feasible alternatives rapidly. The scheduling in the assembly shop is initiated by allocating, namely loading, the assembly blocks to each shop. In this step, the resource capacities (such as available man/hour, available crane) of each shop must be considered. The result of loading without above consideration can make the scheduling result based on that infeasible or worse one. In this paper, we developed the optimal scheduling system of shipbuilding, specifically for loading and scheduling of assembly block, using ILOG Solver/Scheduler. ILOG Solver/Scheduler is a general-purposed commercial software which supports to find a feasible or optimal solution using object oriented technique and constraints satisfaction programming, given constraints and objectives. Also, in order to enhance the system performance, we conducted various experiments of ILOG search strategies. The experimental results showed that the impact of search strategies is significant.
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