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박종열(Park Jong Yeol),김동규(Kim Dong Kyu),박형기(Park Hyung Ghee) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
This paper presents a signal processing procedure to detect damage locations of frame structures by using continuous wavelet transform. Wavelet transform has the characteristics that allows the use of longer time interval at low-frequency domain, and shorter interval at high-frequency domain. By this wavelet transform characteristics, Morlet wavelet may be used to identify the locations of damages in the structures. The numerical case studies show that this method can be applied to detect the damage location under a controlled sweeping load.
박종열 ( Park Jong Yeol ),김동규 ( Kim Dong Kyu ),박형기 ( Park Hyung Ghee ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
This paper presents a signal processing procedure to detect damage locations of frame structures by using continuous wavelet transform. Wavelet transform has the characteristics that allows the use of longer time interval at low-frequency domain, and shorter interval at high-frequency domain. By this wavelet transform characteristics, Morlet wavelet may be used to identify the locations of damages in the structures. The numerical case studies show that this method can be applied to detect the damage location under a controlled sweeping load.
옥수수 유망 자식계통들에 대한 잡종강세 및 수량관련 형질의 유전
박종열(Jong Yeol Park),우수연(Su Yeon Woo),사규진(Kyu Jin Sa),이주경(Ju Kyong Lee) 한국육종학회 2015 한국육종학회지 Vol.47 No.4
Grain yield, agronomic traits, and correlation between genetic distance of 36 F1 hybrids produced by half-diallel crosses using nine maize inbred lines were analyzed. In the analyses of F1 hybrids and their mid-parent heterosis (MPH) for agronomic traits, grain yield showed highest MPH value of 156%. One-hundred kernel weight showed the lowest value of 7%. In addition, when genetic distance based on agronomic traits was estimated, parental inbred lines did not agree with their own pedigree. Therefore it had the limitation to estimate genetic distance using agronomic traits. In this study, 92 SSR markers were used to calculate genetic distance at DNA level. However we did not confirm their own pedigree of nine parental inbred lines. There was no correlation between grain yield and SSR markers. Therefore molecular marker selection was conducted in relation with grain yield by the step-by-step method using 92 SSR markers. The selected nine SSR markers showed a significant positive correlation (r2=0.703**) between grain yield and SSR markers. The correlations between the selected SSR markers and agronomic traits of ear length, ear width, plant height, and ear height were particularly showed positively correlated. The nine SSR markers selected in this study would help predicting heterosis and planning crosses for hybrids in maize breeding programs.