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변혜정(Hye Jeong Beun),최성식(Sung Sik Choi),황진영(Jin Young Hwang),김형식(Hyoung Sik Kim) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
It is analyzed that supplement point to develop reliability on the auto transmission endurance test by means of big data. A great quantity of field driving data is collected, classified shifting frequency, operating times of the major parts of the auto transmission and analyzed damage potential. Therefore it is possible to improve the method of the auto transmission durability test mode in comparison with current way. Also, it is found the way of making representative of the driving mode. As a result of the application of the enhanced method, the test could be conducted to the target including severe driving condition and tested saving time. It is also able to be guide line to design of the most parts of the auto transmission such as the gear, clutch, brake, torque converter and so on.
변용섭(Young Sub Beun),박철주(Chul Ju Park) 한국IT마케팅학회 2015 Journal of Information Technology and Management Vol.3 No.2
Eutteum-gil Sujin 1-dong Food Alley Merchant is devoting its efforts into the project on vitalization of downtown commercial district with Seongnam-si and Seongnam-si Commercial District Vitalization Foundation. However, there are many problems. The number of foreign (Chinese) shops has been rapidly increasing in the past 2~3 years. This is resulting in many irrational problems. Major problems are aroused by differences in cultures and lifestyles. Due to such problems, this commercial district is recognized as dangerous crime-ridden area with disgusting odor, uncleanness, and discomfort. As native customers are turning their steps away from this district, native shop owners are suffering from serious damage. They are becoming mentally withered with the awareness that their livelihood is being devastated.
박수일,변범수 한국운동역학회 1994 한국운동역학회지 Vol.4 No.2
During walking, jogging and sprinting, the support time, stride time of both legs and maximal ground reaction forces was investigated using dynamic strain amplifier and repicorder with strain gages for six male college students(3 nonathletes:3 athletes) in the department of physical education. The results this study seem to be the followings: 1. The greater the speed, the more the support time, nonsupport time and stride time was decreased. But it was shown that the nonsupport time during jogging was longer rather than one during walking. 2. Difference between the support time and nonsupport time of right and left leg shown a significant relationship during walking and jogging. whereas it was not shown significantly during sprinting in most subjects. 3. Maximal reaction forces of heel and forefoot were 1.34 BW: 1.38 BW(heel : forefoot) during walking and 1.32 BW: 2.04 BW during jogging and also were 2.49 BW(forefoot) during sprinting, respectively. 4. The % time of maximal ground reaction forces of heel and forefoot were 19.44% time : 79.83% time(heel : forefoot) during walking and 9.96% time : 43.92% time during jogging and also 53.70% time(forefoot) during sprinting.