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문형택,김종학 대한교통학회 1998 대한교통학회 학술대회지 Vol.34 No.-
신호화 교차로는 한정된 시간 자원을 각 접근로별로 서로 다른 수요에 적절하게 효과적으로 배분함으로써 그 운영효율이 극대화될 수 있다. 현재 서울시 기존 전자신호시스템은 검지기체계를 갖추고 있으나 주로 시간대별 제어방식(TOD제어)을 사용하고 있다. 이에 대한 대안으로 실시간 교차로신호제어시스템인 이른바 첨단신호시스템이 개발되어 서울시 강남지역 61개소에서 시범운영중에 있다. 첨단신호시스템은 접근로별 수요에 따라 녹색시간을 배분하는 방식을 적용하고 있는데, 본 논문에서는 첨단신호시스템의 운영효율성을 평가하기 위하여 실제 교통수요와 운영녹색시간을 비교 · 분석하였다. 그 결과로 얻은 결론은 다음과 같다. 첫째, 방출차량에 의한 포화도의 비율을 고려하여 주기 및 녹색시간을 결정하는 첨단신호제어시스템의 알고리즘은 비포화시 직진이동류에 대한 녹색시간은 수요에 비해 과대산출운영되고 있다. 둘째, 좌회전의 경우 대기차량의 패턴이 매우 불규칙할 때, 실시간 녹색시간제어기능이 미흡하다. 따라서, 향후에는 교통수요를 고려할 수 있는 알고리즘의 보다 심도있는 연구 · 개발이 요구되며, 또한 비포화 상황이 아닌 과포화 상황에도 적용될 수 있는 알고리즘의 개발이 이루어져할 것으로 보인다.
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옥상조경에서 물관리 기술에 관한 연구 : 방수, 배수, 관수를 중심으로 focused on waterproofing, drainage and irrigation
문형택,이영무 弘益大學校 科學技術硏究所 1999 科學技術硏究論文集 Vol.10 No.1
The purpose of this thesis is to establish the design, construction and maintenance criterria for the water related problems in roofscape planning. Typical water related areas are the waterproofing, drainage and irrigation. As far as the waterproofing is concerned the present construction technique guarantees the watertight roofs on any nomal buildings. The problem occurs when the roof garden is installed on the existing waterproofing on the slab. Consequently the old waterproofing should be re-inforced to accommodate the impact of incoming plants and other hard landscape facilities such as pergolas and ponds. The caution should be taken when the soil and trees are installed because during the construction process it is easy to penetrate and ruin the watertightness of the roofing material. Also as the root system of trees grow it tends to poke holes through the waterproofing material, so in this case strong sheet must be installed to prevent the infiltration of the root system. The drainage doesn't pose serious threat as long as the proper construction is done and maintenance is regularly perfomed. If the care is neglected on the roof garden and the drain is clogged by rubbish during the heavy monsoon period as in the case of Korea the water can easily overflow the highest level of waterproofing and inundate the downstairs. This problem can be avoided by cleaning the drain covers and, to begin with, design the waterproofing devices according to the intensity of rainfall of the concerned region. As far as the irrigation is concerned it is reasonable to state that the automatic and manual irrigation should be combined together at the beginning stage. Because depending on the species and the spot where they are planted the demand for water is bound to be different it is not wise to rely soley on the automatic irrigation system. Until the plants establish their root and foliage system birmly on the growing medium it is recommended that the professional landscape personel must water the plants manualy by observing the foliage condition and judging the individual water demand. after this period the automatic system can take over. So far the water management techniques are highly developd in Germeny and Japan. As long as the climatic condition is carefully analyzed the technical application doesn't pose problems to our situation.
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이영무,문형택 홍익대학교환경개발연구원 2000 환경개발연구논문집 Vol.5 No.-
The purpose of this thesis is the establishment of basic guidelines to create an ecologically sound apartment complex. The case studies of foreign and korean eco-site planning lead to the extraction of basic principles that should be applied in realization of ecologically healthy apartments. The guidelines consist of six categories and these principles are desired to apply to the planning process of future apartment complex. The first is the application of environment friendly housing construction techniques. This includes solarium, indoor garden, balcony garden and greening of apartment outer walls. The second is the recycling of resources. It involves recycling of wastes, compost making, water retention and purification. The third is the creation of biotope. It means the designing of fish pond, stream and paving with permeable material. The insects such as butterflies and dragonflies are encouraged to settle in the biotope. The fourth involves the creation of green network within the complex. It consists of various gardens and eco-corridors which connect the greeneries. The system eventually leads to invitation of not only insects and birds but also small mammals like squirrels. The fifth is the harmonizing of the apartments with the existing topography. It means the preservation of the forst, minimizing the soil removal and positioning of buildings to fit the natural energy. The sixth includes active and passive harnessing of sun, wind and geo-thermal energy extraction. Above techniques are recommended to be utilized actively in the planning process of healthier apartment construction to achieve the goal of UN resolution of Rio de Janeiro in 1992 which states the 'Environmentally Sound and Sustainable Development' in order to continue the symbiosis of human race and the nature.
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심층신경망 모형을 활용한 대중교통 이용자의 환승시간 추정에 관한 연구
이경재,김수재,문형택,한재윤,추상호 한국ITS학회 2020 한국ITS학회논문지 Vol.19 No.1
The transfer time is an important factor in establishing public transportation planning and policy. Therefore, in this study, the influencing factors of the transfer time for transit users were identified using smart card data, and the estimation results for the transfer time using the deep learning method such as deep neural network models were compared with traditional regression models. First, the intervals and the distance to the bus stop had positive effects on the subway-to-bus transfer time, and the number of bus routes had a negative effect. This also showed that the transfer time is affected by the area in which the subway station exists. Based on the influencing factors of the transfer time, the deep learning models were developed and their estimation results were compared with the regression model. For model performance, the deep learning models were better than those of the regression models. These results can be used as basic data for transfer policies such as the differential application of transit allowance times according to region. 환승시간은 대중교통계획 및 정책 수립에 있어서 중요한 요소이다. 이에 본 연구에서는 교통카드 이용자료를 활용하여 대중교통 이용자의 환승시간 영향요인을 규명하고, 딥러닝 기법인 심층신경망 모형을 이용한 환승시간을 추정하였으며 이를 전통적인 회귀모형과 비교 분석하였다. 먼저 환승시간 영향요인의 경우, 주변 버스의 배차간격과 버스 정류장까지의 거리가버스 환승시간에 양의 영향을 주었으며, 버스 노선수는 반대로 음의 영향을 주었다. 또한 지하철역이 속해있는 자치구에 따라서도 환승시간에 영향을 주는 것으로 나타났다. 도출된 환승시간 영향요인을 통해 딥러닝 모형을 구축하고 성능을 비교한 결과, 회귀모형보다 딥러닝 모형의 성능이 보다 우수하였다. 본 연구의 결과는 지역별 환승허용시간의 차등 적용 등 대중교통환승정책의 기초 자료로 활용될 수 있을 것으로 판단된다.
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