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RISS 인기검색어
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- 저자 : 최병운(Choi Byung-Un) (검색결과 2 건)
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최병운(Choi Byung-Un),오경숙(Oh Kyung-Sook),김기진(Kim Ki-Jin) 한국체육과학회 2003 한국체육과학회지 Vol.12 No.1
This study performed to provide the scientific basic factors of effective program and clarifying main causes which affect the record of a middle and long distance running. This subjects were consisted of 8 middle and long distance runners in high school. Consequently, this study analyzed the relationship between the maximum value of physiological variance and running performance. The results are as follows. VO₂max, VEmax and HRmax showed 69.38±4.58㎖/㎏/min, 144.44±8.221/min and 195.87±15.82times/min, respectively. Additionally, the peak blood lactate, exercise duration and all-out exercise intensity showed 11.09±1.88mM, 998.50±138.20sec and 4.44±0.56kp respectively. The running performance was significant correlation ship only with recovery rate of heart rate (-.596). Although there were also not any significant correlationship with VO₂max(-.513), VT(-.523) and OBLA(-.420), these factors showed higher correlation and gave meaningful effects to the running performance. Therefore, these factors should be consider for the selecting players and the suggestion of effective training program.
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한학수(Han Hag-Su),최병운(Choi Byung-Un),배상만(Bae Sang-Man),박은구(Park Eun-Gu),김영은(Kim Young-Eun) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
In comparison with Over-head electric power line, Underground electric power line system has benefits such as power supply and city environment beautification, so 22.9㎸ distribution electric power cable of KEPCO is installed around the metropolis highways. Also, the electric power cable that Urban railroad is using is stretched in a narrow underground space by using pipelines or troughs. The electric power blackout paralyzes the function of subway in operational state as well as brings about social confusion. Furthermore, the weakness of XLPE cable, as a result of water tree thermal phenomenon, real life span compared with life expectancy is by far a long way and water tree thermal preventive measure has been constantly increasing up to now. Therefore, the necessity of the failure prevention of underground electric power cable is urgently needed and the reliability improvement of power supply is on gradual increase. A study shows that more than 50% of underground cable failure are caused by water tree defect, in order to avoid the damage of electric power cable that take places under operation by adding high voltage to the electric power cable, the insulation efficiency is measured by using the method of IRC analysis that can be measured in operational state, and we try to find the instance study on Silicone Fluid/XL construction method reinforced insulation efficiency by preventing water penetration within cable and get rid of penetrated water to control the water tree thermal of electric power cable.
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