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박인건,전영국 順天大學校 師範大學 附屬 科學敎育硏究所 1999 科學과 敎育 Vol.7 No.-
This study focuses on describing and interpreting various phenomena occurred in an elementary school after a separate computer education curricula driven by private company has ended. The major thrusts of carrying out qualitative study in this case were laid out on the dimensions of practical teacher, private computer lecturer and participating elementary students. Research methodology was adopted from the attempts to describe various images and computer classroom activities to come up with subjective interpretations from an empathetic teacher as a researcher. The participants include a principal, a private computer lecturer, a computer teacher and three elementary students. The main research agendas cover various phenomena occurred between a computer teacher and students such as students' attitudes according to teaching methods, question and answers, the degree of satisfaction on computer curricular, a teacher's classroom management and control methods. By adopting a qualitative method, the researcher tried to get into the deep levels of interaction patterns between a teacher and students and tried to interpret those patterns from empathetic eyes of the researcher. This research design was carried out mostly from August of 1999 to September of 1999 by taking interviews and video tapes with the research participants. Interview data were transcribed and video tapes were coded according to time lines and the sequences of activities taken place in the computer room.
여과형 비점오염시설의 역세척시 여재 구성별 수리학적특성 및 처리효율 분석
박인건(Park, Ingun),이정민(Lee, Jungmin),김하룡(Kim, Hayong) 한국방재학회 2021 한국방재학회논문집 Vol.21 No.6
본 연구에서는 비점오염저감 시설 중 여과형 시설에 대해 Lab Scale의 수리모형실험을 통해 역세척 시 수리학적 특성과 오염물질 처리효율을 분석하였다. 실험에 사용된 여재는 비점오염저감 시설에서 흡착 기작의 향상을 위해 보편적으로 적용되고 있는 우드칩, 모래, 바텀애쉬에 대하여 단일 여재 및 복합 여재에 대해 여재 배치별 손실수두 변화를 산정하여 수리학적특성을 분석하였으며 오염물질 처리효율을 도출하였다. 여재층 별 SS 처리효율은 우드칩(상층 0.3 m) + 모래(하층 0.3 m), 모래(상층 0.3 m) + 바텀애쉬(하층 0.3 m)로 진행하였으며, 제거효율이 80% 이상으로 양호한 효율이 나타났으며, 모래 + 바텀애쉬의 경우 선속도 20 m/hr에서 87.4%의 높은 제거 효율을 보이는 것으로 분석되었다. In this study, the hydraulic characteristics and pollutant treatment efficiency during backwashing were analyzed through laboratory-scale hydraulic model experiments for filtration-type non-point pollution reduction facilities. The filter media used in the experiment were analyzed by calculating the change in head loss for single or complex arrangements of wood chips (WC), sand (SA), and bottom ash (BA). These are commonly used to improve the adsorption mechanism in non-point pollution reduction facilities, from which the pollutant treatment efficiency was derived. The SS treatment efficiency experiments for each filter media layer were conducted with SA+WC (WC 0.3 m in the upper layer, SA 0.3 m in the lower layer) and SA+BA (SA 0.3 m in the upper layer, BA 0.3 m in the lower layer), and the removal efficiency was greater than 80%, indicating good efficiency. In the case of SA+BA, analysis showed a high removal efficiency of 87.4% at a linear velocity of 20 m/hr.
로그데이터 기반 BIM 설계 작업 분석 자동화 기술 개발
박인건(Park, In-Geon),박재호(Park, Jae-Ho),김이제(Kim, Yi-Je),진상윤(Chin, Sang-Yoon) 대한건축학회 2024 대한건축학회 학술발표대회 논문집 Vol.44 No.1
In the AEC industry, the role of BIM is expanding. The purpose of this study is to automate the analysis of BIM design productivity using log data. Several preparatory tasks were conducted to utilize log data for analysis, including analyzing the types of log data commands and deriving design commands. Among a total of 16 command types, three commands that were meaningful for design work were derived. Furthermore, An algorithm for formalizing unstructured log data and an analysis automation Revit add-in were developed using Python and C#. The aim is to enhance BIM efficiency during the design phase by providing data-driven knowledge discovery.
산성광산배수의 망간처리를 위한 MOB 적용에 관한 연구
이강유(Kang Yu Lee),장민(Min Jang),박인건(In Gun Park),엄태영(Tae Young Um),임경호(Kyeong Ho Lim) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.8
산성광산배수처리를 위한 국내 대부분의 처리시설은 자연정화법을 사용하고 있으며 이들 중 일부 처리장에서는 고농도의 망간이 유출되고 있는데 이는 망간산화를 위해 높은 pH (>9)가 요구되기 때문이다. 본 연구는 망간처리 공정 중 경제성을 높일 수 있는 생물학적 망간처리의 가능성을 타진하는데 그 목적이 있으며 망간산화미생물은 Pseudomonas sp. MN5를 이용하였다. 회분식 실험을 통해 수질조건에 따른 영향을 분석한 결과 pH 7에서 최고산화속도는 10.4 mg/L·h로 나타났다. 망간산화미생물을 담지한 연속류 실험결과 운전 초기 망간 농도는 42 mg/L에서 6 mg/L 이하로 크게 감소하였지만 망간산화미생물의 산소소비에 의한 혐기조건 형성으로 망간의 재용출 현상이 나타났다. Domestic treatment facilities for acid mine drainage (AMD) mostly used a passive treatment process. But some passive treatment facility discharged high manganese concentrations because it is required high pH (>9) for abiotic oxidation of Mn(II) to Mn(IV). This study was focused on the feasibility of biological manganese treatment using the manganese-oxidizing bacteria (Pseudomonas sp. MN5) from AMD and economical application method of it. To investigate the various conditions of water quality the most part of the experiments were based on batch test. And result of it showed that maximum manganese oxidation rate were 10.4 mg/L·h at the pH7. We also performed small column tests in which MOB were attached to the functional polyurethane (FPU) media containing alkaline chemicals. Manganese concentration decreased 42 mg/L to below 6 mg/L. But anaerobic condition formed by excessive bacterial respiration in column resulted in increasing effluent manganese concentration.