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공지천의 수질 분석 탐구 : 2학년 정다현, 고동기, 김두현, 송진, 이경원, 황민수 학생과 함께
최은환 강원과학교육연구회 2004 강원과학교육연구회지 Vol.9 No.1
2003. 05 ∼ 2003. 10월까지 6개월 동안 매달 1회씩 6회에 걸쳐 공지천에서 채수하여 수질을 분석하였다. DO, COD, 인산염-인, pH, 총질소 등에서 월별로 뚜렷한 변화의 경향성을 찾을 수 없었다. 상류에는 플라나리아가 서식하고 있었고 하류에는 피라미가 서식하고 있었다. 상류는 1급수, 중류는 2급수와 3급수 사이 하류는 2급수이었다. 공지천의 물은 생각보다 오염되지 않았다.
노승훈,조한중,최은환 金烏工科大學校 1996 論文集 Vol.17 No.-
Automization is a key factor in improving the productivity, and the core of the automization is supposed to be the servomotor. In this study, ideal system performances are suggested for the positional servo mechanism using a DC servomotor. And object functions are defined to ensure those system performances. Design parameters obtained in the procedure of the studied positional servo mechanism can readily be applied to many optimal design procedures.
TV Set의 화질개선을 위한 전자총의 설계에 관한 연구
노승훈,최은환,정선환 金烏工科大學校 産業技術開發硏究院 1999 産業技術開發硏究 Vol.15 No.-
The vibration of electron guns are very critical to the display resolution of the Braun tubes. In this study, the dynamic properties of the electron guns are investigated along with the other parts of the Braun tube to analyze the natural frequencies, modes, and the transmission paths of the vibrations, the result of which is applied to improve the design of electron guns for suppressing the vibrations.
노승훈,조한중,최은환,No, Seung-Hun,Jo, Han-Jung,Choe, Eun-Hwan 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.8
In this study, the free vibrations of the cantilever plate, which is one of the most frequently used elements in various machine structures, are analyzed and further the results are utilized to develop the methodology to predict and control the natural frequencies for designing stabilized systems. The proposed method has three major steps. The first step is the frequency response test to investigate the natural frequencies of some plates, then the database is constituted from experiments and the FEM, and finally the natural frequencies are predicted using the database to be cross-checked by the identification test. The result of this study will help design many different stable structures without any complicated calculations.
이병익,김진표,최은환 龍仁大學校 武道硏究所 2004 武道硏究所誌 Vol.14 No.2
This study of intended to survey the actual condition of the students who want to be admitted to the Department of Martial Arts of University, the realities and the influence of home, school, and private institution as the influencing factors and their relations to the preparation for the physical examination. This study is also designed to plant the right perception of the Physical training in the minds of the students preparing for the physical examination for the Department of Martial Arts, help them make the most of special abilities and be prepared for the future as professionals. For teachers who guide them, the goals of this study are to make them understand the importance of students choosing major, let them know the things to be improved, and provide the right direction and fundamental data on Martial Arts education. In order to achieve these goals, those 300 student who are taking lecturess from private institutes to apply for the department of Martial Arts in Suwon city, pyungtak city and Osan city were sampled, except those insincere answers of 4 students, The rest reliable answers of 296 students were used for statistical use with the statistic software SPSS 10.0 for Windows package. The results of the research on the Actual condition of the Applicants Preparing for the Phyical Examination for the Department of Martial Arts are as follows: Firstly, the major factor of choosing the Department of Martial Arts is ones own will and majority of the students are going to major it in order to be teachers or coaches. It was indicated that only a few students are going to choose the major because of their grades. Secondly, the money spent on the preparation for the physical examination per month varied from 10 thousand won to 40 thousand won and it seemed that the differences among tuition fees came from the characteristic of the institutes. Overall the parents of those student showed positive response to the preparation for the physical examination for the Department of Martial Arts. Thirdly, the sources of the information on physical examination were mostly gained from internet and seniors. The time spent on the institute was more than 4 hours per day and the length of course taken by students were mainly lass then a year and over 3 years. The majors to be applied in Department of Martial arts were Judo, Taekwondo, Yonpmdo, Kando, Taekyun, and etc. in order. Lastly, it seemed that many students thought the money spent on the preparation for the physical examination was excessive but most of them would not change their choice. Although some students answered that they might change their major according to their grades, but majority of the students were very sure of what they are going to do and also told that they would do their best to achieve their goal.