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전의식,서순봉 대한피부과학회 1974 大韓皮膚科學會誌 Vol.12 No.4
Roots of manually extracted scalp hairs among 86 healthy Koreans in different age groups were examined microscopically and the proportion of resting hairs to growing hairs were determined with the followings results. 1. The proportion of resting hairs in all age groups was 10.9% and there was no significant difference between male and female. 2. In each age group the proportion of resting hairs shows difference, being lowest(6.8%) in below 9 years age group, increasing the rate by increasing the age group, highest(19.7%) in over 60 years age group. 3. The proportion of resting hairs below the age of 29 years was below 10%, above 30 years to 49 years in between 10% to 15%, and over 50 years in between 15% to 20%. 4. The normal range of the proportion of resting hairs among normal Koreans was below 20%.
전의식 公州大學校 工學硏究院 生産技術硏究所 2005 論文集 Vol.13 No.-
According to the development of the heat sink technology, the making of heat sink pin consist the heat sink is rapidly increased. But the current manufacture machine drops pins into the box directly, there is extra work to loading the pins and this will induce the lose of man cost and work time. So in this study, the target focused the economic part like cost and time by developing the radiator pin unloading system. In the beginning of the graduate project, the concept design was needed. First of all, the twisting angle of guide bar and the setup position of driving part was suitably designed. After making prototype, the reliability test of table and driving part (sensor, cylinder,1 solenoid valve) was performed. As a result, the performance of loading the radiator pin was shown over 3 times compare to the former days.
박익근,김흥섭,전의식 서울産業大學校 1996 논문집 Vol.43 No.1
능동배기소음 제어기 개발은 배기 소음 규제의 강화, 고출력 그리고 연비 향상 등의 요구를 해결하기 위한 일환으로 개발의 필요성이 높아지고 있다. 이러한 배기소음제어를 위한 능동형 머플러 개발을 위하여 본 연구에서는 능동배기소음 실시간 제어 알고리즘의 구성과 능동배기소음 제어용 시뮬레이터를 제작하였다. 또한, 제작된 시뮬레이터를 이용하여 다양한 배기 소음 제어 실험을 통하여 실차 배기 소음 제어를 위한 시뮬레이터의 적절한 모델을 제안하고자 하였다. The necessity for development of active exhaust noise controller is growing as a counterplan to require the reinforcement of exhaust noise regulation, high power output and improvement of average fuel economy. In this study, to develop active muffler for exhaust noise control. There are implemented the composition of realtime control algorithm for active exhaust noise control and the construction of simulator for active exhaust noise control. Alos, implementing active exhaust noise control with this simulator, the feasibility model for control of vehicle exhaust noise control is suggested.
전의식,박성두 公州大學校 工學硏究院 生産技術硏究所 2005 論文集 Vol.13 No.-
Nowaday, the semi-conductor technology and precision automation technology are become rapidly improving, so mechanical industries converting mechatronics industries which are combined mechanics, electrics and electronics. To manipulate these technology, the ability which can design precise machine and controller and the ability can program the operation software are needed In this study, rotary music player which can play the music, rotate the character and light the piano board according to the musical notes was developed. The concept design to arrange the piano board circularly was studied and the hardware technology with step motor control, photo sensing, serial port interface were used. And to generate the musical note, new conpact program for private use was developed. As a result, the rotary music player which is first in the worldwith for leisure was born.