• Journal of the Korean School Mathematics Society
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• v.24 no.4
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• pp.369-390
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• 2021

It would be reasonable as a teacher to make efforts not only to reflect on the class on their own but also to improve the teacher' teaching e pertise by reflecting on the class with fellow teachers through lesson reflection sharing. This paper attempted to develop a lesson reflective framework that can provide standards and focus for lesson reflection and lesson sharing. First, based on the class evaluation criteria of previous studies, class reflection elements and a draft of lesson reflection were prepared. In a class conducted on 27 third graders at C High School where the co-researcher worked as a teacher, four peer teachers at the same high school were required to write personal opinions on the class based on the draft of lesson reflection. Based on this, lesson sharing was conducted, and modifications of the lesson reflection framework were developed by analyzing the case of class sharing. The implications of this paper indicate the need to clarify the perspective of viewing the lesson by sharing the intention of each question in advance. In addition to writing lesson reflections, it is necessary to share classes simultaneously.

• The Journal of the Convergence on Culture Technology
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• v.7 no.2
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• pp.419-425
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• 2021

This study analyzed the safety of evacuation according to the number of exits and the direction of evacuation routes with evacuation simulations of the Pathfinder in case of a fire at a highway service area. It was also analyzed of the difference in RSET by comparing the single or double types of the exit of a facility. The results were as follows. When only one direction exit was opened, all of the RSET were exceeded. When two or more different directions were opened according to the general principle of evacuation, all results met the RSET. The simulations showed that two or more different directions were more shortened in RSET than the one same direction. The result of the types of doors showed that the single type door was shortened in RSET rather than the double type doors. For the evacuation safety in a fire at the highway service areas, firstly, it is necessary to secure two or more exits in a fire at all times. Secondly, the exits should not be same directions. Finally, it is suggested that the exit should be installed with a single type of door.

• Journal of the Society of Disaster Information
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• v.19 no.3
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• pp.665-672
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• 2023

Purpose: Underground utility tunnel is facility that is jointly house infrastructure such as electricity, water and gas in city, causing condensation problems due to lack of airflow. This paper aims to prevent electricity leakage fires caused by condensation by detecting whether the control panel door in the underground utility tunnel is open using a deep learning model. Method: YOLO, a deep learning object recognition model, is trained to recognize the opening and closing of the control panel door using video data taken by a robot patrolling the underground utility tunnel. To improve the recognition rate, image augmentation is used. Result: Among the image enhancement techniques, we compared the performance of the YOLO model trained using mosaic with that of the YOLO model without mosaic, and found that the mosaic technique performed better. The mAP for all classes were 0.994, which is high evaluation result. Conclusion: It was able to detect the control panel even when there were lights off or other objects in the underground cavity. This allows you to effectively manage the underground utility tunnel and prevent disasters.

• Korean Journal of Ichthyology
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• v.35 no.1
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• pp.30-38
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• 2023

The feeding ecology of the eight barbel loach, Lefua costata, were investigated in the Jusucheon (Stream), Namyang-ri, Okgye-myeon, Gangneung-si, Gangwon-do, Korea from January to December 2013. L. costata mainly fed from March to December when the water temperature was higher than 5℃, and the feeding rate peaked in April~May and September~October. Their main food organisms analyzed by the index of relative importance (IRI) were Diptera (77.1%), Ephemeroptera (20.3%), Trichoptera (1.7%) and Odonata (0.4%) in Insecta. Other food organisms were various, such as Arhynchobdellida (0.6%) and Tubificida (0.1%) of Annelida, Nematoda (0.2%), fish (Actinopterygii, 0.1%), and Veneroida (0.01%) of the Mollusca. Major seasonal food organisms were Diptera (55.4%) and Ephemeroptera (41.6%) in spring, Diptera (92.7%) and Anelida (6.8%) in summer, Diptera (70.8%), Ephemeroptera (9.0%), Trichoptera (8.1%) and Annelida (7.7%) in autumn. By age, juvenile (0+) tended to eat only Diptera (mainly Chironomidae, 98.2%) that were relatively small in prey size. However, as it grew, the proportion of Diptera gradually decreased, and the proportion of relatively large Mayflies and Annelids increased. The size of the prey organisms showed rapid growth, with 2.5±1.05 mm for juvenile (0+), 3.2±1.29 mm for one year (1+), 3.7±2.05 mm for two years (2+), and 6.8±4.97 mm for three years or more (≥3+).

• CHINESE LITERATURE
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• v.100
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• pp.71-84
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• 2019

The academia has always maintained a strong interest in Fu Sheng Liu Ji since it was known to the world. However, current studies mostly focused on English versions translation, classification of works genres, the Image of the heroine Chen Yun, and depicting, which based on content of the works, the life of the lower literati in the mid-Qing Dynasty, yet no systematic discussion on the characteristic construction of memorial space has been carried out. Although real life was used as writing material, a careful reading will reveal that Shen Fu, the author, had the memories significantly split and reassembled, which was achieved through the repetition of fragmentary memory spaces. The intentionally constructed characters of these memory spaces, along with their combinations, and the mentality of the lower literati in the mid-Qing Dynasty are all worthy of further study, these aspects and their relations were discussed in this paper. The second chapter summarized, classified and described the types of memory spaces in the works. Two typical memory spaces were appeared, semi-closed dotted space and open linear space. The former was mainly in Gui Fang Ji Le and Xian Qing Ji Qu while the latter was in Kan Ke Ji Chou and Lang You Ji Kuai. The following discussion was on Shen Fu's deliberately disconnecting the time chain, and the narrative ways of categorizing and linking these memory spaces. The third chapter revealed the mentality of the lower-class literati in the mid-Qing Dynasty, which hidden behind the special construction mode of Shen Fu's memory spaces, was believed as a "active marginalization", and specifically manifested in defending the private space, as well as resisting the social space. Therefore, the paper holds that Fu Sheng Liu Ji is not a record of Shen Fu's life, but a deliberate cutting and reorganizing of the memory spaces, and his active marginalization mentality contributes to the construction of such groups of memory spaces.

• The Magazine for Energy Service Companies
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• s.80
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• pp.12-19
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• 2013

에너지효율향상 및 에너지절약에 대한 다양한 이슈들이 만들어지고 있는 가운데 자연스럽게 ESCO사업에도 많은 관심이 쏠리고 있다. 하지만 관심이 높아지고 있는 만큼 ESCO투자사업 효과성과 ESCO에 대한 불신의 문제가 많은 우려를 낳고 있는 것도 현실이다. 이에 ESCO협회에서는 '시장친화적 ESCO발전방안 연구용역' 발주를 통해 민간차원에서 ESCO사업의 효과를 분석하고, ESCO업계의 측면에서 ESCO의 발전방안을 도출할 수 있는 방안을 마련하도록 했다. 본 문에서는 '시장친화적 ESCO발전방안 연구'의 요약문을 통해 ESCO사업의 성과와 앞으로의 ESCO발전 방향에 대해 살펴보고자 한다.

• Nuclear industry
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• v.37 no.7
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• pp.17-18
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• 2017

미국의 환경 운동 기구인 "Environmental Progress"의 마이클 쉘렌버거 대표는 7월 5일 미국의 환경운동가, 역사학자, 기후학자 등 34명 공동 명의의 서한을 홈페이지(http://www.environmentalprogress.org/southkorea-letter)에 공개했다. 수신은 문재인 대통령으로 되어 있다. 쉘렌버거 대표는 미국의 이 2008년 '환경의 영웅(Hero of the Environment)'으로 선정한 환경운동가이다.. 퓰리처상 수상 경력이 있는 역사학자 리처드로즈, 기후학자 제임스 핸슨, 리처드 뮬러 UC버클리 교수 등도 서한에 이름을 올렸다.

• Monthly Korean Chicken
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• v.20 no.9
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• pp.92-93
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• 2014

농촌진흥청 국립축산과학원에서는 지난해 앙계현장에서 농가가 필요로 하는 기술 분야의 질의사항에 대한 분야별 전문가가 답변한 '축산현장 애로기술 해결을 위한 닭 기르기 100문 100답집'을 발간했다. 이 책자에는 육종 번식, 종자보존과 관리, 사양관리, 항생제 대체제 이용, 계사시설과 환경관리, 특수관리, 생산물의 품질관리, 위생과 질병, 경영관리 등 양계의 다양한 분야에 대한 전반적인 내용이 담겨져 있다. 지난해에는 육계관련 육종 번식, 사양관리에 대해 알아보았고, 올해는 항생제 대체제 이용, 계사시설과 환경관리 등에 대해 알아보고자 한다.

• Proceedings of the Korea Concrete Institute Conference
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• 1992.10a
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• pp.94-99
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• 1992

In this study , some factors such as mix proportion, type and dosage of high range water reducing admixture(HRWR) and natural pozzolanas influencing on the slump loss of high strength concrete(H.S.C) using HRWR were investigated for reducing the slump loss. The acquired results indicated that the slump loss of H.S.C was affected according to cement content, sand percentage and type and dosage of HRWR and fly ash was superior to ground granulated blast furance slag in reducing the slump loss of H.S.C.

• Monthly Korean Chicken
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• v.20 no.5
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• pp.50-52
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• 2014

농촌진흥청 국립축산과학원에서는 지난해 양계현장에서 농가가 필요로 하는 기술 분야의 질의사항에 대한 분야별 전문가가 답변한 '축산현장 애로기술 해결을 위한 닭 기르기 100문 100답집'을 발간했다. 이 책자에는 육종 번식, 종자보존과 관리, 사양관리, 항생제 대체제 이용, 계사시설과 환경관리, 특수관리, 생산물의 품질관리, 위생과 질병, 경영관리 등 양계의 다양한 분야에 대한 전반적인 내용이 담겨져 있다. 지난해에는 육계관련 육종 번식, 사양관리에 대해 알아보았고, 올해는 항생제 대체제 이용, 계사시설과 환경관리 등에 대해 알아보고자 한다.