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한국 소 비육에 있어서 사료 급여방식이 비육효과에 미치는 영향
육종융,김진욱 ( Chong Yung Yuk,Jin Uk Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.3
Six Korean yearling bulls were employed in two experiments to study the effect of feeding methods, i.e., feeding concentrates and Gutted native grass hay separately (control feeds) or mixed together (test feeds). The double-reversal design was used in this experiment. The results obtained were summarized as follow: 1. Amount of hay intake in test group was larger than that in control group. but the difference was not significant. 2. Body weight gains of the bulls fed control feeds were heavier than that of test feeds. The average daily gain was 1.21㎏ for control group and 1.03㎏ for test group, but the difference was not statistically significant. 3. During the two experimental periods, bulls of control group consumed less DCP and TDN for 1㎏ body weight gain than that of test group. 4. The height of hip cross and length of heart girth of control bulls were longer than that of test bulls. Withers height and body length of test bulls, however, were longer than that of control bulls.
기존 변전소의 IEC 61850 기반 현장정보처리반을 이용한 디지털변전소 전환 가능성 검토에 관한 연구
육심복(Sim-Bok Yuk),이성환(Sung-Hwan Lee),김종일(Chong-il Kim) 한국정보전자통신기술학회 2018 한국정보전자통신기술학회논문지 Vol.11 No.2
전 세계적으로 국제 표준인 IEC 61850 통신규약을 사용하고 있고 국내에서도 2007년도부터 시험 적용과 연구개발을 통해 2013년부터 신규 건설되는 변전소는 IEC 61850 기반의 디지털변전소로 준공되어 지고 있다. 국내 대기업을 중심으로 디지털 변전소 운영시스템 개발을 위한 연구가 진행되어 LCP용 IED 전력응용기기를 개발하였으나, 기존 변전소에 설치되어 운전 중인 구형의 현장기기와 신형인 디지털 변전소 운영시스템에 사용되는 현장기기를 모두 수용할 수 있는 시스템 분야의 연구는 아직 미흡한 실정이다. 본 논문에서는 제안된 현장정보처리반을 IEC 61850 기반으로 구성할 수 있는 48VDC 입력모듈과 125VDC 출력모듈을 구현하고 패킷 분석 툴인 IEC 61850 클라이언트 인증 프로그램과 Wireshark를 사용하여 상태감시, 제어조작시험을 실시하여 현장 적용 가능성을 검증하였다. The IEC 61850 communication standard is used worldwide, and within the country the new substation is built as a digital substation based on IEC 61850 from 2013, after field tests and R&D from 2007. Research on the development of digital substation operating system has been conducted mainly in large domestic companies, so the IED power application equipment for LCP are developed. However, there is still a lack of research in the field of systems that can accommodate all the field devices used for legacy substation and new digital substation. In this paper, we developed the 48VDC input modules and the 125VDC output modules which can construct proposed field information processing modules to IEC 61850 based type, and verified the field applicability from the state monitoring and control operation tests by using IEC 61850 client authentication program and Wireshark.
Luminance bitmap based BTC for color image compression
Jun Wang,Kyeong-yuk Min,Yeun-Cheul Jeung,Jong-Wha Chong 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
This paper presents a luminance bit-map based BTC (LBB-BTC) algorithm for color image compression. The LBB-BTC employs luminance bitmap to represent the three R, G and B bit-maps more exactly. Moreover, by adding 3 bits to indicate the entirely differences between Y and R, G or B bit-maps, respectively, the coding performance is improved obviously. Simulation results show that the proposed LBB-BTC performs as well as the BTC in terms of subject visual quality and PSNR, and significantly improve the compression ratio of BTC.
Lam, Simon Ching,Chong, Andy Chun Yin,Chung, Jessie Yuk Seng,Lam, Ming Yee,Chan, Lai Man,Shum, Cho Yee,Wong, Eliza Yi Ni,Mok, Yat Man,Lam, Ming Tat,Chan, Man Man,Tong, Ka Ying,Chu, Oi Lee,Siu, Fong Ki 한국성인간호학회 2020 성인간호학회지 Vol.32 No.1
Purpose: This study aimed to establish the translation adequacy and examine the psychometric properties of FaceMask Use Scale (FMUS). Methods: This methodological study employed a cross-sectional design with repeatedmeasures. Phase 1 examined the equivalence and relevance of English and Chinese versions of FMUS. Phase2 examined the internal consistency, stability and construct validity. Different sample batches (213 universitystudents and 971 general public) were used appropriately for psychometric testing. The 2-phase data were collectedbetween January and April 2017. Results: In Phase 1, the semantic equivalence and relevance (item- and scale-levelcontent-validity-index=100%) was satisfactory. Furthermore, from 133 paired test-retest responses, the quadraticweighted kappa (.53~.73, p<.001) and Intraclass Correlation Coefficient (ICC=.81) between the English andChinese version of FMUS were satisfactory. In Phase 2, FMUS demonstrated satisfactory internal consistency(Cronbach’s ⍺=.80~.81; corrected item-total correlation coefficients=.46~.67) and two-week test-retest stability(ICC=.84). The known-groups method (t=3.08, p<.001), exploratory (71.10% of total variance in two-factor model)and confirmatory factory analysis (x2/df=4.02, Root Mean Square Residual=.03, Root Mean Square Error ofApproximation=.06, Goodness of Fit Index=.99, Comparative Fit Index=.99) were all satisfactory for establishingthe construct validity. Conclusion: The FMUS has an equivalence Chinese and English versions, satisfactoryreliability and validity for measuring the practice of face mask use. This poses clinical and research implications forthose community health nurses who works on respiratory protection. Further research should be conducted on the‘negligent practice’ of FMU.