戰略的 視角의 開發

김종민,김종민 해군대학 1990 海洋戰略 Vol.- No.68

選擇的 海軍戰略

김종민,김종민 해군대학 1992 海洋戰略 Vol.- No.76

센서 기반 모니터링 자료를 활용한 임하댐 저수지 탁수 예측 정확도 개선

김종민,이상웅,권시윤,정세웅,김영도,Kim, Jongmin,Lee, Sang Ung,Kwon, Siyoon,Chung, Se Woong,Kim, Young Do 한국수자원학회 2022 한국수자원학회논문집 Vol.55 No.11

In Korea, about two-thirds of the precipitation is concentrated in the summer season, so the problem of turbidity in the summer flood season varies from year to year. Concentrated rainfall due to abnormal rainfall and extreme weather is on the rise. The inflow of turbidity caused a sudden increase in turbidity in the water, causing a problem of turbidity in the dam reservoir. In particular, in Korea, where rivers and dam reservoirs are used for most of the annual average water consumption, if turbidity problems are prolonged, social and environmental problems such as agriculture, industry, and aquatic ecosystems in downstream areas will occur. In order to cope with such turbidity prediction, research on turbidity modeling is being actively conducted. Flow rate, water temperature, and SS data are required to model turbid water. To this end, the national measurement network measures turbidity by measuring SS in rivers and dam reservoirs, but there is a limitation in that the data resolution is low due to insufficient facilities. However, there is an unmeasured period depending on each dam and weather conditions. As a sensor for measuring turbidity, there are Optical Backscatter Sensor (OBS) and YSI, and a sensor for measuring SS uses equipment such as Laser In-Situ Scattering and Transmissometry (LISST). However, in the case of such a high-tech sensor, there is a limit due to the stability of the equipment. Therefore, there is an unmeasured period through analysis based on the acquired flow rate, water temperature, SS, and turbidity data, so it is necessary to develop a relational expression to calculate the SS used for the input data. In this study, the AEM3D model used in the Water Resources Corporation SURIAN system was used to improve the accuracy of prediction of turbidity through the turbidity-SS relationship developed based on the measurement data near the dam outlet.

중국 내 세계문화유산의 동양사 수업 활용 방안 : 동아시아를 중심으로

김종민 웅진사학회 2009 역사와 역사교육 Vol.18 No.-

우리나라 호소환경 연구의 동향과 전망(1)

김종민,Kim, Jong-Min 환경보전협회 1996 환경정보 Vol.18 No.6

建築物이 都市氣候에 미치는 影響 : 日本 東京地域의 人工排熱量 推定

김종민,조민관 한국건축설비학회 1999 건축 설비 Vol.2 No.3

도시가 광역화되고, 도시의 Activity가 높아짐으로서 도시환경에는 다양한 형태의 Impact가 관여하게 된다. 인간에 의한 인공활동의 제어가 어느 정도 도시대기환경에 영향을 증감시킬지를 정량적으로 파악하기 위해서도 지표면 경계조건의 중요한 요소인 도시인공배열의 실체를 정확히 추정하여 데이터화하고, 도시기후등의 수치 시뮬레이션에 반영하여야 한다고 사료된다. 본 논문은 이러한 배경으로 일본 동경지역의 인공배열을 정량적으로 추정하고, 그 결과를 배열량 Mesh Map으로 Mapping하고, 도시지역의 지표면 피복상태의 변화가 열수지 특성을 변화시킴을 명확히 하는 것을 목적으로 한다. 건축물과 자동차에서 배출되고 있는 인공배열을 정량적으로 추정하고, 결과를 건축물은 용도별로 분리한 건물별 배열량 Mesh Map을 작성 했다. 또한 에너지소비 패턴분석은 에너지소비를 각시간, 일, 월, 계절별로 분석을 하고, 그 결과를 일변화 및 계절변화로 추정하였다. 자동차에서 배출되는 인공배열도 선형보간법을 사용해서 교통량을 추정하고, 그 결과를 이용해서 배열량 Mesh Map을 작성하였다. 상기의 총배열량의 추정결과를 500m Mesh Map으로 Mapping화 하였다. 본 연구의 결과로는 건축물과 자동차를 도시표면의 열원으로 가정하고, 도시기후 문제중 인공배열량의 구체적인 추정방법의 제안과 그 실체를 명확하고 정량적으로 제시 가능하였다. This study aims at examining causes and effects between the heat emission from buildings and automobiles urban climate changes. Characteristic urban climate is resulted from anthropogenic heat by land-use and activities of human beings in metropolis. Recently, environmental thermal deterioration becomes one of the major problems in urban areas. In this study, the anthropogenic heat in urban area is quantitatively investigated in a viewpoint of urban thermal environment. Especially, distribution of emitted heat from buildings and automobiles, which is a largest factor of anthropogenic heat and urban climate, is hourly estimated Tokyo ward area.

공막열상 수술 후 겐타마이신 독성으로 의심되는 허혈성 망막병증 1예

김종민,김운형,조우형,경성은,장무환,Jong Min Kim,MD,Woon Hyung Ghim,MD,Woo Hyung Cho,MD,Sung Eun Kyung,MD,PhD,Moo Hwan Chang,MD,PhD 대한안과학회 2013 대한안과학회지 Vol.54 No.7

Purpose: To report a case of ischemic retinopathy due to suspicious gentamicin retinal toxicity after primary repair of a scleral laceration. Case summary: A 45-year-old man presented to our department with decreasing vision in his right eye after ocular trauma. Best corrected visual acuity (BCVA) was 0.02 in the right eye and slit lamp examination revealed scleral laceration. Both intravenous and topical antibiotics (10% cefazolin and 2% gentamicin) were immediately administered. On intraoperative examination, a scleral laceration located 5 mm to 11 mm from nasal limbus, prolapsed vitreous body and partial division of medial rectus muscle were observed. After irrigation with gentamincin 0.2% around the wound, primary repair was performed. On postoperative day 3, fundus examination revealed a retinal break, barrier laser was performed. On postoperative day 4, diffuse retinal edema with intraretinal hemorrhage was observed as well as, superonasal ghost vessels. Subsequently, fluorescein angiography showed diffuse leakage of retinal vessels and a nonperfusion area at the periphery, especially on the nasal side. As vitreous opacity became worse, the patient underwent pars plana vitrectomy with endolaser. One month later, vitreous cavity was clearer and best visual acuity was 0.2. Conclusions: Large doses of intraocular gentamicin ccan cause retinal toxicity. Increased gentamicin application through a scleral laceration may lead to toxic antibiotic levels. When a scleral laceration wound irrigation is performed, precautions are necessary to prevent retinal ischemia associated with gentamicin toxicity.

중증근무력증 환자에서 반복신경자극검사와 단섬유근전도검사의 전기생리학적 지표들의 상관관계

김종민,최성혜,배희준,조용진,이광우 대한신경과학회 1998 대한신경과학회지 Vol.16 No.3

화물운반 운전자에서 발생하는 요통에 관한 연구

김종민,임현술,김수근,이종민,권용욱 대한보건협회 2000 대한보건연구 Vol.26 No.4

This study was designed to investigate the prevalence and the risk factors of low back pain among goods transporting drivers. The subjects were 87 male dirvers working in a steel transporting company. The data were collected by a self-reported questionnaire and a physical examination by a physiatrist. The contents of the questionnaire included general characteristics, physical characteristics, type of work, job satisfaction, presence of low back pain for 1 year, present low back pain, duration, frequency, intensity, and place experienced low back pain. The number of cases with occupational low back pain were 19, so the point prevalence was 21.8 persons/100 persons. The number of cases with a history of occupational low back pain for one year were 38, so the one year period prevalence was 43.7 persons/100 persons. There were no significant differences in the point and one year period prevalence of occupational low back pain according to age, marital status, educational level and body mass index. There were no significant differences in the point and one year period prevalence of occupational low back pain according to alcohol drinking, smoking, stretching exercise and regular exercise. The point and one year period prevalence of occupational low back pain showed no significant differences in job satisfaction, tenures, driving time, lifting of heavy materials. However, significant differences were found among driving type. The point and one year period prevalence of occupational low back pain were significantly higher in the elevator truck driver group than the other group (p<0.05),

티타늄 합금의 얇은 벽 밀링가공에서 가공방법에 따른 진동특성 및 가공품질에 관한 연구

김종민,구준영,전차수,Kim, Jong-Min,Koo, Joon-Young,Jun, Cha-Soo 한국기계가공학회 2022 한국기계가공학회지 Vol.21 No.6

Titanium alloy (Ti-6Al-4V) has excellent mechanical properties and high specific strength; therefore, it is widely used in aerospace, automobile, defense, engine parts, and bio fields. Particularly in the aerospace field, as it has a low specific gravity and rigidity, it is used for the purpose of increasing energy efficiency through weight reduction of parts, and most have a thin-walled structure. However, it is extremely difficult to machine thin-walled shapes owing to vibration and deformation. In the case of thin-walled structures, the cutting forces and vibrations rapidly increase depending on the cutting conditions, significantly affecting the surface integrity and tool life. In this study, machining experiments on thin-wall milling of a titanium alloy (Ti-6Al-4V) were conducted for each experimental condition with different axial depths of cut, radial depth of cut, and machining sequence. The machining characteristics were analyzed, and an effective machining method was derived by a comprehensive analysis of the machined surface conditions and cutting signals.