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건축 기획업무 효율성 향상을 위한 공간 인접성 그래프 추출 알고리즘 개발
김근재(Kim, Geun-Jae),구형모(Gu, Hyeong-mo),박혜진(Park, Hye-jin),추승연(Choo, Seung-yeon) 대한건축학회 2022 대한건축학회논문집 Vol.38 No.1
The architectural design process requires spatial planning that involves searching for building drawings with similar compositions to the ongoing project. However, the current search methods involve searching for architectural drawings based on a high level of shared similarities in specific details. Spatial elements such as spatial relationships and compositions are vital for design case studies but are complicated search terms for finding similarities in architectural drawings. To extract the spatial relationships in a graph format from a drawing, this research proposes a methodology that utilizes BIM and Dynamo algorithm to detect drawing elements and generate an intersection area that defines the type of drawing based on the adjacency of spatial elements in the drawing. Therefore, the methodology proposed in this paper is a method of building a spatial relationship database that utilizes an algorithm that finds similarities in spatial relationships in existing architectural drawings. It is expected that through this algorithm, architectural design data, which has been qualitatively accumulated so far, can be accumulated in a quantitative form for an automated space planning system that architects can refer to in the spatial planning process.
고도정수처리시 흡착탑에 의한 유기화합물 제거특성에 관한 연구
김영욱 ( Young-wook Kim ),김근재 ( Geun-jae Kim ) 한국환경기술학회 2006 한국환경기술학회지 Vol.7 No.3
본 연구에서는 M정수장의 원수와 여과 처리수를 대상으로 모형실험을 실시하고, 오존처리와 함께 GAC 흡착에 의한 각 수질항목별 제거효율을 파악함으로서 고도정수처리 공정 도입시 최적의 운전인자를 도출하고자 시도하였다. 탁도의 경우 원수는 1.5∼32.2 NTU, 여과수는 0.1∼5.4 NTU, GAC계열의 처리수는 0.04∼0.37 NTU, BAC계열의 처리수는 0.05∼2.41 NTU로 나타났다. 따라서 탁도 제거효율은 GAC계열이 안정된 값을 나타내고 있다. KMnO<sub>4</sub>소비량의 경우 원수는 2.6∼16.7㎎/L, 여과수는 0.4∼8.0㎎/L, GAC계열의 처리수는 0.001∼4.75㎎/L를 나타냈다. 따라서 활성탄 흡착에 의한 KMnO4소비량은 58.7%의 제거율을 나타냈다. TOC의 경우 원수는 1.8∼9.0㎎/L, 여과수는 평균 2.7㎎/L이었으며 GAC계열 처리수는 평균 0.9㎎/L로 활성탄 흡착에 의하여 65.3%이상 제거되었다. THM과 THMFP의 경우 원수는 평균 0.003㎎/L과 0.053㎎/L, 여과수는 0.047㎎/L과 0.077㎎/L로 검출 되었다. 이것은 전염소 처리에 의하여 생성된 것으로 판단되며, 전염소처리수가 유입된 GAC계열에서 높게 검출되었다. BAC계열에서는 평균 0.004㎎/L과 0.032㎎/L로서 제거율은 91.9%와 58.5%로 나타났다. 활성탄 재료에 따른 유해물질 제거효율을 파악하기 위하여 유입수 수질에 대한 유출수의 잔존비(Ce/Co)를 비교한 결과 DOC의 경우 석탄계 0.27에 비해 목탄계 0.72로 나타났으며, TOC의 경우 석탄계 0.26 목탄계 0.70, UV254의 경우 석탄계 0.17 목탄계 0.45로 수질 차이는 크지 않으나 석탄계활성탄의 유기화합물의 제거 효율이 높은 것으로 나타났다. 활성탄흡착탑에서 EBCT의 증가에 따라 제거 성능이 향상되는 것을 알수 있었으며 EBCT 10분 이내에서는 제거율의 증가가 뚜렷하게 나타났으나 10분 이상에서는 제거율의 향상이 완만한 것을 볼때 EBCT를 증가시킬수록 수질이 향상되지만 EBCT 15분에서 가장 안정적인 처리수 수질을 확보할 수 있을 것으로 판단된다. This study was performed to investigate optimal operating factor for advanced drinking water treatment process by removal of organic matters with ozone and activated carbon in M water treatment plant. Turbidity of raw water was 1.5∼32.2NTU, those of by sand filtration, GAC and BAC were reduced to 0.1 ∼5.4, 0.04∼0.37 and 0.05∼2.41NTU, respectively. Removal efficiency of turbidity by GAC was higher than the others. KMnO4 consumption of raw water was 2.6∼16.7mg/L, those of by sand filtration and GAC were reduced to 0.4∼8.0 and 0.001∼4.75mg/L, respectively. Removal efficiency of KMnO4 consumption by activated carbon was 58.7%. TOC of raw water was 1.8∼9.0mg/L, those of by sand filtration and GAC were 2.7 and 0.9mg/L, respectively. Removal efficiency of TOC by activated carbon was 65.3%. THM and THMFP of raw water was 0.003 and 0.053mg/L, those of by sand filtration were detected to 0.047 and 0.077mg/L, respectively. THM and THMFP were detected to 0.004 and 0.032mg/L by BAC series, the removal efficiency of those 91.9 and 58.5%, respectively. It is supposed that THM and THMFP concentration was derived from prechlorination processes. The residual ratio of influent to effluent (Ce/Co) was charcoal system DOC 0.27, TOC 0.26 UV254 0.17 and carboniferous system DOC 0.72 TOC 0.70 UV254 0.45. The residual ratio was GAC filtration DOC 0.44, TOC 0.485, UV254 0.35 and BAC filtration DOC 0.42, TOC 0.41, UV254 0.263. Correlation analysis among UV254, DOC, TOC appeared to be improved from removal ability or EBCT was increased removal due to preozonation improved, and EBCT showed that the coagulating effects of EBCT to the raw water was brought at 15 min.
장극관 ( Chang Kug Kwan ),서대원 ( Seo Dae Won ),강민호 ( Knag Min Ho ),김근재 ( Kim Geun Jae ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.2
Many existing RC Buildings were built before the seismic code was established, they need seismic retrofit performance. In this study, presents the evaluations of seismic performance and displacement ductility for two type RC Frames : existing RC frame without SRF(Super Reinforcement with Flexibility) and RC frames strengthened with SRF.
학술논문6 : 변질성 품목의 수명 불확실성을 고려한 적정 보급량에 관한 시뮬레이션 연구
문성암 ( Seong Am Moon ),석순복 ( Soon Bok Suk ),김근재 ( Geun Jae Kim ) 한국군사학회 2015 군사논단 Vol.81 No.-
This research has focused on the uncertainty that could have been triggered from deterioration. This study has been proceeded from questions such as “is the stockpile managed considering the storage period of it?”, “is the principle of First in First Out well conformed?” and “How are the items managed when the deterioration of the storage period occurs.” For this, this study has gone through theoretical inquiry about the military’s supply chain management, stockpile management, stockpile management of items which have possibilities of deteriorating. This study has selected field ration as the subject of the study, as it is the most representative deteriorating items of the military. The ‘As-is’ model has investigated on the discarding process depending on whether or not the item has confirmed durability. The ‘To-be’ model was completed by inputting controlled variables which enhances the system of storage management to reduce the generation of wastes. This research has came out with conclusion after comparing quantities of stock, wastes, and the proportion of wastes of each model. Stocks will be abandoned if they are not used on right time. The army especially has high probability of occurrence of wastes as it stores its supplies and equipments with diverse kinds and also with significant quantities. I hope this research paves the way to enhance the inefficient aspects of the stocks.