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강전민,가경환,권창기,윤해철,손수범,변해심,신민철 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6
This study was formed the basis of propelling for being closely connecting between School PE(Physical Education) and Local Society Exercise for regarding the cooperation possibility depending on the actual situation. From this, it is helpful for evaluating the total understanding of the present condition form School PE and Local Society Exercise and grasping the realities concretely. To gain the above result, the subject of study is on 48 agencies among 50 agencies that include 30 elementary and middle schools, 15 government offices, 5 YMCA offices. After investigating the plan of providing physical activity program except result PE class and the connecting program with School PE and its activation, it comes to the conclusion below this. There is the period of possible time for propelling the cooperating model at School and Local Society PE which is special activity class after school, club activity class, discretional activity class and the vacation, weekends. And also there are many participating agencies that are school, local society, public sports center and community, the youth group, local autonomous entity PE post, prfessional physical association and community, city and countries Education Office and the sports-lover's group etc. So far, the connecting program is operated at 24 agencies which are 3 elementary school(30%), 5 middle school(50%), 4 high school(40%)m 7 government office(70%), 5 YMCA office(80%). As the reason of non-operating it, the first is the lack of the charger, spare time and considering teacher's advantage when time is arranged at the teacher and leader's part. The second is the falling behind facility and the lack of place and appliance for practicing. The third is the insufficient of connecting program at program part and increasingly number of students who are individual participating at the side of local society physical agency at school. The forth is the lack of finances for running at economy part and overpaying of using fee. The fifth is the lack of the activity time at the elementary school and putting first in importance the exam for university enterance at middle and high school. The sixth is the parents and principals and school committee have little understanding of the physical educating in common at recognition part. The seventh is the cooperating company's preparation is not enough and incomplete relation each other. Looking into the opinion for activating plan of connecting program which is classified into common contents, the result is presented the same reaction both of them that the professional leader arrangement is needed at teacher and leader's part. At the facility expansion and open program part is required for a various program. In the case of school at economy condition part, more cheaper than expenses for facilities is needed and also the renovation of the education system And at the recognition part, the positive attitude of school is needed. At the safety part, the solution of safety problem for responsibility is needed. At the administration part, the support for professional agency and the change of systemic role for connecting agency.
자동차차체 및 부품제조업 산업장의 작업환경실태에 관한 조사 연구
서준호,문덕환,김정호,이채관,황용식,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5
Objectives: For the purpose of preparing the fundamental data and control the working environment and assessing the status of working environmental in manufacturing industry of bodies for motor car and of parts. Methods and Materials: Accessories for motor car and its engines the auther measured the noise level, concentration of dust, heavymetals, organic solvents, chemicals to 99 industries(24 working processes) form Feb. 2000 to Oec. 2000. Results: The results were as follows : 1. Mean noise level cutting, grinding, pressing, foundries and shot-blast was exceeded to threshold limit value(TLV) of noise. 2. Mean concentration of total dust was not exceeded to TLV. 3. Mean concentration of Mn in welding process and Pb in drying, welding, fabricating, rolling was exceeded to TLV. 4. Mean concentration for chemicals and organic solvents were not exceeded to TLV. 5. Mean concentration of dust and heavymetals were statistical significant difference between with local ventilation system and without local ventilation system. Conclusion: Above results, author suggest to prepare more passively control to working environment where exceeded the TLV.
부하변동이 존재하는 DC 모터의 속도 제어를 위한 외란관측기 설계
김성종,신명준,손영익,김갑일,임승철,강환일 明知大學校 産業技術硏究所 2007 産業技術硏究所論文集 Vol.26 No.-
This paper considers a speed control problem of DC motor under load variations. In order to reduce the effect of load variation, a disturbance observer has been designed for the given system. With a cheap encoder there exists considerable measurement noise in the velocity feedback and it should be reflected in designing the disturbance observer. The authors have obtained the nominal transfer function of a DC motor and designed a disturbance observer for the control purpose. With the disturbance observer a digital controller has been implemented using a DSP(TMS32OF2812). Some experiments show the enhanced performance of the control system with the proposed method.
이병도,이완,권경환,팽준영,손현진 대한구강악안면방사선학회 2009 Imaging Science in Dentistry Vol.39 No.2
Adenomatoid odontogenic tumor(AOT) is a tumor of odontogenic epithelium with varying degrees of inductive changes in the connective tissue. The common radiographic appearance of AOT is a unilocular radiolucency associated with an unerupted tooth. Detectable radiopacities have been reported in many cases. We present a case of AOT in a 9-year old-female patient. Cystic lesion with numerous, punctuate radiopaque foci was observed on the anterior region of the mandible. These radiopacities were situated mostly on the buccal side of impacted tooth on the multi-planar images of cone beam computed tomograph. Characteristic duct like structures and amyloid like material were observed on histopathologic finding.
폐기물 소각시설의 저위발열량 및 에너지 회수효율 산정방법에 관한 연구
손지환 ( Ji-hwan Son ),권영현 ( Young-hyun Kwon ),강준구 ( Jun-gu Kang ),고영재 ( Young-jae Ko ),유하녕 ( Han-young Yoo ),장미정 ( Mi-jeong Jang ),권준화 ( Jun-hwa Kwon ),전태완 ( Tae-wan Jeon ),신선경 ( Sun-kyoung Shin ) 한국폐기물자원순환학회(구 한국폐기물학회) 2017 한국폐기물자원순환학회 추계학술발표논문집 Vol.2017 No.-
국내 폐기물 소각시설의 에너지 회수효율 관련 규정으로는 「폐기물관리법 시행규칙」 제3조(에너지 회수 기준 등)에 명시되어 있으며, 에너지 회수효율 기준으로는 75 % 이상(생산량 기준) 회수된 열에너지를 스스로 이용하거나 다른 사람에게 공급할 것으로 규정하고 있다. 또한, 2016년 5월 제정된 「자원순환기본법」 내 제21조에서는 폐기물을 순환이용할 수 있음에도 불구하고 소각·매립방법으로 처분하는 경우 폐기물처분부담금을 부과하도록 명시하였으며, 동법 제24조에 따르면 소각열에너지를 50 % 이상 회수하여 이용하는 경우 폐기물처분부담금을 감면할 수 있도록 규정하고 있다. 그러나 현행 에너지 회수효율 기준은 생산에너지를 기준으로 산정하고 있어 실제 유효하게 이용된 에너지의 평가가 곤란하며, 에너지원으로는 전력에너지가 반영되지 못하여 에너지 회수효율 증진을 위한 유인방안이 부족한 실정이다. 국내의 폐기물 소각시설의 저위발열량 산정방법으로는 원소분석법(Dulong, Steuer 등), 단열 열량계(Bomb Calorimeter)를 이용하여 측정·분석하고 있으나 소량의 시료 채취를 통하여 폐기물의 대표성을 확보하기에는 많은 어려움이 따른다. 또한, 소각로에 투입되는 폐기물의 특성(성상의 다양성, 계절적 영향 등) 및 시설의 특성 등을 반영하지 못하고 있는 실정이다. 이에 본 연구에서는 지역적 특성 및 소각로·보일러의 형태(stoker, Rotary Kiln, FBC )등을 고려하여 현재 운영 중인 폐기물 소각시설(생활, 사업장) 11개소(17호기)를 대상시설로 선정하여 계측기 측정데이터 및 현장측정(배출가스 조성, 바닥재 배출온도 및 강열감량, 소각로 및 보일러 방열손실)을 통하여 해당 시설의 저위발열량 및 에너지 회수효율을 산정하였다. 이와 같은 산정결과를 바탕으로 향후 에너지 회수효율 향상 제고를 위한 기초자료로 활용하고자 한다.