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배경석,박종태,조기찬,길혜경,신재영 한국환경보건학회 1997 한국환경보건학회지 Vol.23 No.2
Most of urban streams in Korea have been changed channel forms and suffered from direct inflow of domestic sewage, etc. Therefore, maintenance of structure and function of those ecosystem are hard. The present study was carried out to examine the life survival maintenance ability of the stream by community analysis of aquatic animals in typical urban stream (Jungrang stream) in Seoul. The aquatic animals were composed of 31 species, 18 families, 8 orders, 5 classes in 4 phyla. Seasonal species number showed big fluctuation between 8 species in Winter and 24 species in Autumn. Major dominant species in Jungrang stream were Tubificidae sp.1, Chironomidae sp.1, Chironomidae sp.2 and Physa acuta, and above endurance species for water pollution occupied very high dominance indices. But, Cercion hieroglyphicum, Ischnura asiatica, Rantra chinensis, Herochares striatus, Agabus japonicus in benthic macroinvertebrates of a few individuals are appeared. Also, fry of Carassius auratus and Silurus asotus in fish are occurred. Therefore, we can be inferred on posibility of growth and spawning of above species in the stream. Jungrang stream has a small quantity of natural riffle areas, ponds and watergrass areas by channel form of water course. Aquatic animals in Jungrang stream has been suffered by reduction of self-purification reaction ability and have mass production of attached algae on the stream bed. For analysis of fluctuation of life survival maintenance ability in Jungrang stream, long-term survey is needed.
배경석,이상수,신도철,이용진,김진곤,오수경 한국환경보건학회 1990 한국환경보건학회지 Vol.16 No.2
The present study was accomplished from March to August, 1990 in order to examine the community structure of aquatic insects and the biological estimation of water pollution levels by the aquatic inseets of Kyungan stream in Kyunggi-do. 1. The aquatic inseets of whole area composed of 78 species, 42 genera, 26 families in 8 roders. 2. The occurrence species number show highest at Gungpyung-ri(29 species) and lowest at Yongin town(1 species) 3. Dominance indices show lowest at Gungpyung-ri(0.35) and highest at Yongin town(1.00) and Choboo-ri(1.00) 4. Species diversity indices show highest at Gungpyung-ri(3.53) and lowest at Yongin town(0.00) 5. The biological estimation of each area's water quality levels based on the diversity index are as follows. Oligosaprobic area : Gungpyung-ri, Muchu-ri $\alpha$ mesosaprobic area : Yooeun-ri, Choboo-ri(K4), upper site of Wangsanri, Yeuk-ri, Wangsan-ri. $\beta$ mesosaprobic area Gonjiam-ri, Dopyoung-ri, Kyungan-ri, Wondang-ri. Polysaprobic area : Yongin town, Choboo-ri(K5)
시뮬레이션을 통한 제철플랜트 배관장치 설계비용의 변동 범위 분석
배경석,허기무,윤성훈,문윤재,유호선,이재헌,Bae, Kyung-Suk,Heo, Ki-Moo,Yoon, Sung-Hoon,Moon, Yoon-Jae,Yoo, Ho-seon,Lee, Jae-Heon 한국플랜트학회 2014 플랜트 저널 Vol.10 No.4
본 연구에서는 배관설계항목을 조사하여 전문가 면담 및 설문을 통해 주요 설계항목을 도출하였고, 이를 국내외 사례 프로젝트에 적용하여 주요 배관설계 항목별 비중 및 비용변동 범위를 조사하였다. 조사결과를 바탕으로 몬테카를로 시뮬레이션을 활용하여 배관설계비 전체에 대한 비용변동 범위를 분석하여 유사 프로젝트 수행 시 입찰단계에서 합리적인 입찰금액 산정 및 입찰참여에 대한 타당성을 검토할 수 있는 방안을 제시하였다. In this consideration, this research investigated the piping design items and drew out key design items through interview with experts and surveys to apply them to actual project examples and look into piping design item-specific significance and cost variation ranges. Based on this investigation, the Monte-Carlo simulation was employed herein to analyze the cost variation range for the entire piping design costs with a view to presenting a way to calculate a reasonable bidding price for any similar project and verify the appropriateness of joining a bid.
시스템사고 접목 과학수업 모델 개발 및 타당화에 관한 연구
배경석,최재혁,문예진,지덕영,이태호,손연아 한국시스템다이내믹스학회 2022 한국시스템다이내믹스 연구 Vol.23 No.2
The purpose of this study is to develop the educational model using Systems Thinking(ST) and to examine its feasibility. For this purpose, first, analyzing the preceding research on the topic of science education using ST in Korea was conducted for making meaningful implications. Second, based on the derived implications, a science education model using ST is developed and applied to the school field. Third, the feasibility of education model is qualitatively analyzed. The study results are as follows. First, there are few educational models that using ST in Physics, Chemistry, Biology and Integrated Science subjects. Second, to decrease the difficulties of ST learning, it is necessary to consider the developmental process and curriculum, introduce cognitive tools, and induce students to internalize themselves. Third, ST education is needed in the teacher education and training process. The researchers developed a science education model using ST by reflecting the above implications, and obtained the qualitative analysis result that it is effective in reducing the difficulties and in teacher education. In terms of the educational method that proceeds from individual activity to group activity, students’ cooperative problem-solving was led, and the student’s self-internalization stage provided an opportunity to feel the need for ST on their own. The study suggests ‘Hamlet Modeling’ as a way to promote interest in other science subjects and to teach ST together. Also, there is a need for ST achievement standards considering the developmental process and the educational process. Lastly, there is a need for research in which pedagogical theories such as the development of cognitive tools and ‘Responsive Teaching’ methods are actively grafted.