수도권 공장 허가와 상수원 보호

민경석,Min, Gyeong-Seok 한국환경기술인연합회 2007 환경기술인 Vol.24 No.2

산업폐수 배출허용기준 개선을 위한 제언

민경석,Min, Gyeong-Seok 환경보전협회 2006 환경정보 Vol.28 No.364

학교건물 시공을 위한 4차 산업기술 적용의 효과성에 대한 연구

민경석,Min, Kyung-Suk 한국교육녹색환경연구원 2020 교육·녹색환경연구 Vol.19 No.4

본 연구는 학교건축에 대한 원가, 공정, 품질, 안전 및 환경관리 목표를 수립하기 위해서 4차 산업기술 중 건설현장에서 활용도가 높은 3D프린팅, 드론, 로봇자동화, 증강현실 기술에 대한 영향도를 조사·분석하여 효율적인 학교건축을 유도하는데 기여하는 기초자료를 제공하고자 하였다. 이를 위해 관련 문헌 및 연구자료를 조사하였고, 건설 실무자를 대상으로 건설현장의 4차 산업기술 활용도와 학교건축 세부공정별 4차 산업기술의 건설관리 5대 목표 영향도에 대하여 설문조사를 실시하여 원가, 공정, 품질, 안전 및 환경관리에 대한 4차 산업기술 활용 방안을 분석하였다. 분석결과 원가, 공정, 품질, 안전 및 환경관리를 위한 학교건축의 4차 산업기술의 적용방안에 대한 유의미한 결과가 나타났다. This study proposed the basic data that contributes to inducing an effective construction plan through the application of the 4th industrial technology to construct a school building that can guarantee the five goals of construction management: cost, process, quality, safety, and environmental management. To this end, 3D printing, drones, robot automation, and augmented reality technologies that are highly usable in construction sites were identified for construction workers. As part of this, related literature and research data were investigated. The selected 4th industrial technology was investigated and analyzed on how it was used for cost, process, quality, safety, and environmental management in a detailed school construction process. As a result of the analysis, significant results were found for the application plan of the 4th industrial technology in school construction for cost, process, quality, safety, and environmental management.

의학교육 학생평가의 객관성에 대한 쟁점

민경석,양길석,Min, Kyung-Seok,Yang, Kil-Seok 연세대학교 의과대학 2013 의학교육논단 Vol.15 No.3

This paper addressed various issues related to the objectivity of student assessment in medical education. The objectivity of assessment was related to all the steps of test development, administration, and results reporting in terms of reliability and validity. Specifically, the objectivity of item formats, representativeness of test content, standardization of test administration, consistency of scoring procedures, and appropriateness of reporting test results were discussed by comparing performance assessment with traditional paper-and-pencil tests. The conclusions were derived from current measurement theories such as standards-based assessment, evidencebased design, and outcome-based assessment. Further, based on Shepard's propositions (2006), the objectivity of student assessment could be achieved by improving the concordance between educational objectives and assessment components such as item types, test contents, and test administration, scoring, and reporting.

효율적인 캠퍼스 마스터 플랜을 위한 설계VE 기능분석 연구

민경석,Min, Kyung-Suk 한국교육녹색환경연구원 2010 교육·녹색환경연구 Vol.9 No.3

It has been found that implementing the function analysis is very important in terms of accomplishing successful Value Engineering(VE), and the function definition is a basic activity at design VE phase. In spite of the importance, the real function analysis activities in the VE are not regard as consequence. In this regard, this paper attempts to use the campus mater plan to lead an effective function analysis. So, the purpose of this value engineering study is to provide the criteria to develop the campus mater plan. This value engineering study used as a guide for the standardization of the campus mater plan. In addition, broader application is possible through the analysis throughout the different ways of the project.

POLICY & ISSUES 기획특집_2 - 물산업 및 수처리기술의 동향과 전망

민경석,Min, Gyeong-Seok 환경보전협회 2012 환경정보 Vol.400 No.-

물산업을 새로운 미래성장동력으로 삼아 세계 물산업 시장에서 경쟁우위를 선점하기 위해 세계 각국은 많은 노력을 기울이고 있다. 우리나라도 물산업 육성의 핵심전략으로 원천기술 확보를 통한 경쟁력 강화, 토털솔루션 역량 확보를 통한 전문 물기업 육성, 먹는샘물, 물재이용 등 연관 산업 육성, 해외진출 활성화 등 세부계획을 추진 중에 있다.

고효율 UASB 반응조를 이용한 유가공폐수의 처리

민경석,안영호,남광현 ( Kyung Sok Min,Young Ho Ahn,Kwang Hyun Nam ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.1

In application of enhanced UASB(EUASB) reactor using fat-free milky waste(carbohydrate:protein=60:40) as substrate, degradation of carbohydrate showed priority as compared with that of protein. In HRT 20hrs, maximum SCOD removal was 92% at organic loading rate of 8 ㎏COD/㎥/d. For SCOD removal of 80% over in HRT 10hrs, allowable organic loading rate was to 20㎏COD/㎥/d and then, methane production was 0.27 ℓ CH₄/gCOD-(rm). Enhanced UASB reactor showed phase separation in hydrogen partial pressure phase, but at the lower sludge bed zone, nitrogen utilization was different with that of l00% carbohydrate. It might be due to deamination stage of protein. At the upper sludge bed and blanket zone, it could be found autolysis of organisms except for substrate as well as deamination process. Morphological characterization with SEM showed that biopellets with milky waste was less uniform and packed loosely. These characteristics might be due to deficient condition of directly utilizable nitrogen for production of extracellular materials as well as utilization priority between carbohydrate and protein involved in substrate.

고효율 UASB 반응조에 있어서 반송에 의한 입상슬러지의 특성변화

민경석,안영호 ( Kyung Sok Min,Young Ho Ahn ) 한국물환경학회 1996 한국물환경학회지 Vol.12 No.4

Recycle effects on physicochemical and morphological characteristics of biopellets produced in enhanced UASB(EUASB) reactor were investigated and a simplified method for evaluation of pelletized degree and physical characteristics of biopellet was proposed. The pellets produced from the EUASB system operated with recycle ratio, R = 2 showed a better settleability and biomass holding capacity. Relationship between settleability and biomass holding capacity of pellets was little dependent with ash contents. As ultimate analysis, mass fractions of carbon, nitrogen and oxygen were shown a little different with regard to recycle ratio. And COD/VSS of pellets was affected mass fractions of carbon and nitrogen. The morphological characterization with SEM showed that the consortium of microorganisms was very dependent with hydrogen partial pressure and operational conditions.

Low-Angle Forward Reflected Neutral Beam Etching을 이용한 Aspect-Ratio-Dependent Etching 현상의 제거

민경석,박병재,염근영,김성진,이재구,Min Kyung-Seok,Park Byoung-Jae,Yeom Geun-Young,Kim Sung-Jin,Lee Jae-Koo 한국진공학회 2006 Applied Science and Convergence Technology Vol.15 No.4

본 연구에서는 반응성 이온빔을 low-angle forward reflection으로 생성시킨 중성빔을 이용하여 Aspect Ratio Dependent Etching (ARDE) 현상이 제거되는 효과에 대하여 연구하였다. SF6 가스를 사용하여 Inductively Coupled Plasma system과 이온빔으로 각각 poly-Si 을 식각한 결과 ARDE 현상을 관찰할 수 있었으며, Si 기판위에 증착된 Poly-Si을 식각하는 것보다 $SiO_2$ 기판 위에 증착된 Poly-Si을 식각하는 것이 ARDE 현상이 더 많이 나타난다는 것을 관찰할 수 있었다. 반면에 같은 공정 조건에서 중성빔으로 poly-Si을 식각한 결과 이러한 ARDE 현상이 효과적으로 제거되었음을 관찰할 수 있었다. 중성빔을 이용하여 ARDE 현상이 제거되는 원리는 2 차원의 XOOPIC code 와 TRIM code를 사용하여 여러가지 나노스케일의 형상을 컴퓨터 시뮬레이션하여 증명하였다. In this study, the effect of using a neutral beam formed by low-angle forward reflection of a reactive ion beam on aspect-ratio-dependent etching (ARDE) has been investigated. When a SF6 Inductively Coupled Plasma and $SF_6$ ion beam etching are used to etch poly-Si, ARDE is observed and the etching of poly-Si on $SiO_2$ shows a higher ARDE effect than the etching of poly-Si on Si. However, by using neutral beam etching with neutral beam directionality higher than 70 %, ARDE during poly-Si etching by $SF_6$ can be effectively removed, regardless of the sample conditions. The mechanism for the removal of ARDE via a directional neutral beam has been demonstrated through a computer simulation of different nanoscale features by using the two-dimensional XOOPIC code and the TRIM code.

우관상동맥 침범한 급성 대동맥 박리증 치험 1례

민경석,이재원,송명근,Min, Gyeong-Seok,Lee, Jae-Won,Song, Myeong-Geun 대한흉부심장혈관외과학회 1995 Journal of Chest Surgery (J Chest Surg) Vol.28 No.2

A 50 year old man with acute aortic dissection DeBakey type I, involving right coronary artery and aortic valve, underwent replacement of the ascending aorta and aorto-right coronary bypass grafting. The operative findings showed a large transverse intimal tear was at about 4cm above the aortic valve. The dissection extended out into the proximal right coronary artery. And we found that the right coronary artery originated from the left sinus of Valsalva, run transversally in the aortic wall, with partial rupture. Postoperatively he had no ischemic cardiac symptoms and neurologic complications. He was discharged on postoperative 9th day with good result.