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윤석주,권명상,Yoon, Seok-joo,Kwon, Myung-sang 대한수의학회 1995 大韓獸醫學會誌 Vol.35 No.2
The characterization of the MHC of domestic animals may constitute a first step towards increasing the efficiency of food production through improved disease resistance. In order to study the role of the MHC in regulating immune response it is first necessary to identify the different MHC alleles. In this research we try to investigate the possible associations between BoLA of Korean native cattles and infectious cattle disease. For this purpose we used one approach, serology. The results were summarized as follows : 1. Korean native cattle's lymphocyte reacted with alloantisera which recognized seven official BoLA allele. Korean native cattle's lymphocytes were reacted same as European breeds(especially with 673/3(W20)). 2. Korean native cattle's lymphocytes reacted with alloantisera 773/2, 673/3, 638/3, 773/3, 602/2, 639/2 and 639/3 at high reaction frequency. But alloantisera 642/1 was not expressed on Korean native cattle. If this allele, recognized by alloantisera(642/1), officially certificate In BoLA workshop it will be characterization factor of Korean native cattle. 3. According to cellular similarity index, we can presume on genetic relativity which has no family relationship.
윤석주,김광준,장창수,Yoon, Seok-Joo,Kim, Gwang-Jun,Jang, Chang-Soo 한국전자통신학회 2012 한국전자통신학회 논문지 Vol.7 No.4
본 논문은 DCT, DWT와 역전파 신경망을 이용하여 MIT-BIH 부정맥 데이터베이스의 심전도 신호로부터 정상파와 부정맥 분류를 제안하였다. 역전파 신경망에 사용할 특징입력을 추출하기 위해 첫 번째 단계에서는 DCT 변환을 이용하여 15개의 계수를 선택하였다. 두 번째 단계에서는 DWT 변환 후 각 detail 계수들의 최대값, 최소값, 평균, 분산, 표준편차를 추출하였다. 역전파 신경망은 55개의 특징입력을 이용하여 정상파와 부정맥 파형을 분류하였고, 98.8%의 분류 성능을 나타냈다. This paper presents an approach to classify normal and arrhythmia from the MIT-BIH Arrhythmia Database using Discrete Cosine Transform(DCT), Discrete Wavelet Transform(DWT) and neural network. In the first step, Discrete Cosine Transform is used to obtain the representative 15 coefficients for input features of neural network. In the second step, Discrete Wavelet Transform are used to extract maximum value, minimum value, mean value, variance, and standard deviation of detail coefficients. Neural network classifies normal and arrhythmia beats using 55 numbers of input features, and then the accuracy rate is 98.8%.
가솔린 자동차의 희박연소시스템 적용을 위한 연료공급 최적화에 관한 연구 (I) - 가솔린 인젝터의 연료분열특성에 관한 연구 -
윤석주,조대진,방두열,Yoon, S.J.,Cho, D.J.,Pang, D.Y. 한국액체미립화학회 1998 한국액체미립화학회지 Vol.3 No.3
In recently, a study on the lean combustion is investigated intensively, because it is expected that this method may decrease the harmful exhaust gas and improve fuel economy in gasoline engine. The problems of lean combustion system in gasoline engine are ignition difficulty, misfire and instability of combustion. The investigation on the optimization of fuel metering and the control of mixing gas flow may be critical to improve the performance of lean combustion. In the fuel injection gasoline engine, the formation of mixture influences strongly on the engine performance such that the importance of fuel metering system becomes apparent. First of all, a study on the fuel breakup characteristics of gasoline fuel injector was carried out in this paper. Fuel injectors are pintle and 4hole-2spray type. The purpose of this study is to clarify the atomization mechanism of spray injected into atomosphere field through electronic controlled-fuel injectors, and to analyze spray characteristics such as drop size distribution and mean drop diameter produced at fuel injector. In this paper, the spray development is observed by taking photograps using 80mm still-camera system, and drop sizes are measured by PMAS. From these experiment, spray pattern injected from gasoline fuel injectors was investigated clearly. Also, it was found that SMD and drop size distribution of injected fuel spray from gasoline fuel injectors.
윤석주,김광준,Yoon, Seok-Joo,Kim, Gwang-Jun 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.4
개인의 신원을 확인하기 위해 인간의 생물학적 특성을 사용하는 방법에 대한 연구가 활발히 진행되고 있다. 심전도를 이용한 생체 인식 기술은 피험자에 피부자극을 일으키지 않고 위조가 어렵다. 기존의 생체 인식 시스템인 지문, 얼굴 등의 인식시스템과 쉽게 접목이 가능하여 다중 생체 인식 시스템으로 응용할 수 있다. 본 논문에서는 이산 웨이블릿 변환 계수를 사용한 심전도의 파형 특성분석법으로 개인을 식별하는 방법을 제안하였다. 심전도 신호의 특징추출은 총 9개의 이산 웨이블릿 변환 계수를 대상으로 상관 계수 분석으로 수행하였다. 식별은 각 클래스의 특징벡터를 입력으로 오류 역전파 신경망을 적용하여 수행하였다. MIT-BIH QT 데이터베이스내 24명의 심전도에 대해 98.88%의 식별율을 나타냈다. Research on how to use the biological characteristics of human to confirm the identity of the individual is being actively conducted. Electrocardiogram(: ECG) based biometric system is difficult to counterfeit and does not cause skin irritation on the subject. It can be easily combined with conventional biometrics such as fingerprint and face recognition to give multimodal biometric systems. In this thesis, biometric identification method analysing ECG waveform characteristics from Discrete Wavelet Transform(DWT) coefficients is suggested. Feature selection is performed on the 9 coefficients of DWT using the correlation analysis. The verification is achieved by using the error back propagation neural networks. Using the proposed approach on 24 subjects of MIT-BIH QT Database, 98.88% verification rate has been obtained.
게잡이 원숭이에서 Recombinant Human Erythropoietin의 4주간 투여 후 비장 유전자 발현 연구
윤석주(Seokjoo Yoon),황지윤(Ji-Yoon Hwang),임정선(Jung-Sun Lim),정선영(Sun-Young Jeong),김용범(Yong-Bum Kim),김달현(Dal-Hyun Kim),권명상(Myung-Sang Kwon),한상섭(Sang-Seop Han),김충용(Choong-Yong Kim) 한국독성학회 2005 Toxicological Research Vol.21 No.3
We investigated effects of recombinant human erythropoietin (rHuEPO) on profiles of mRNA transcripts in 6 male cynomolgus (M. fascicularis) monkey’s spleen for 4 weeks. Six monkeys, composed of control and treatment group (Control : M1, M2, M3; Treatment : M4, M5, M6) were intravenously administered 3 times per week without or with a dose of rHuEPO 2730 IU/0.1 ㎖/㎏. After 4 weeks rHuEPO treatment, spleen was removed for RNA isolation. Splenic gene expression was assessed using Affymetrix U133A 2.0 arrays containing 18,400 transcripts and variants, including 14,500 well-characterized human genes. Gene expression pattern was very different between individuals even in same treatment. In rHuEPO treated groups showed number of genes were up-or downregulated (M4: 79; M5: 48; M6: 73 genes). Six genes (epidermal growth factor receptor, calgranulin A, estrogen receptor binding site associated antigen, matrix metalloproteinase 19, zinc finger and BTB domain containing 16, progestin and adipoQ receptor) were commonly expressed in rHuEPO treated group. The different individual response could be major considering factor in monkey experiment. Further study is needed to clarify the different individual response to rHuEPO in molecular level. This study will be valuable in the fundamental understanding and validation of molecular toxicology for biogeneric drugs including rHuEPO in cynomolgus monkey.
혁신학교 교사들의 교육과정 혁신 경험에 대한 질적 탐구: 학년공동교육과정을 중심으로
윤석주 ( Yoon Seok Ju ) 한국초등교육학회 2016 초등교육연구 Vol.29 No.4
본 연구의 목적은 혁신학교 교사들의 교사협력을 통한 교육과정 혁신 경험을 탐색하는 데에 있다. 이를 위해 연구자는 서울형 혁신학교인 창의초등학교 교사 4명을 면담하였다. 창의초등학교에서는 교육과정 혁신의 일환으로 동학년 교사들이 서로 협력하여 학년공동교육과정을 만들어 실행하고 있었으며, 이를 위해 교사들은 학년공동교육과정의 커다란 방향부터 세세한 학습자료까지 함께 논의하였다. 이러한 교육과정혁신 과정을 통해 교사들은 스스로의 전문성을 신장시켰으며 교사로서의 성취감과 보람을 느끼기도 하였지만, 이를 위한 업무량은 매우 과중하였고 서로 상이한 교육관을 가진 교사들 간의 협력 역시 쉬운 일은 아니었다. 또한, 교육과정 혁신의 일환인 학년공동교육과정을 실행하면서, 교사들은 교육과정 획일화와 답습의 문제를 인식하게 되었으며 이를 공론화하여 해법을 모색해나가고 있었다. The purpose of this study was to explore teachers` experiences in developing and implementing the curriculum for Innovative School reform. The author interviewed four elementary school teachers who had been actively participating in developing and implementing the curriculum at an Innovative School. The author found that the teachers collaborated to develop and implement the Innovative curriculum through the same grade teachers` committees; they together discussed big agendas, designed lesson plans, and even made specific artifacts of the Innovative curriculum; they felt satisfaction as teacher experts in designing their own curriculum for Innovative instruction. However, they suffered from overwork loads and sometimes conflicted with their colleagues due to different thoughts on Innovative education. In addition, in implementing the innovative curriculum as the grade-level common curriculum the teachers got and recognized the problems of decreasing their unique colors of teaching in each class and of imitating the curriculum the teachers of the past years already constructed.
윤석주(S. J. Yoon),최영하(Y. H. Choi),김경훈(K. H. Kim) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
Liquid atomization by means of a spinning cup is widely used as a device for combustion, in cooling and spray drying. In this study, the blowing type rotary atomizer was experimental carried out the investigations on the characteristics of the blowing type rotary atomizer which ?? an air flowenergy of blower instead of an electric motor most commonly used to a driven energy The analysis on the rotary cup speed. air velocity and air momentum with the blower conditions was performed and also the drop size was measured using LDPA. It was tried to analyzed on air-nozzle size and liquid feed-rate as the result. It was found that the increase of the relative velocity between liquid and air improve significantly atomization liquid. and decrease of the liquid feed-rate improved the maximum<br/> drop size though the mean drop size is really the same.<br/>
바이오 디젤 혼합율이 압력식 스월노즐의 분무 특성에 미치는 영향
윤석주 ( S. J. Yoon ) 한국분무공학회 2011 한국액체미립화학회지 Vol.16 No.4
This paper presents the spray characteristics of the gun type burner nozzle with bio-diesel blending rate. The burner nozzle used in this experiment is a pressure swirl type nozzle. For the spray characteristics, visualization of spray was conducted to obtain the spray angle, and laser diffraction spectroscope (LDS) was used for the measurement of the droplet diameters. The results showed that the Dmax, SMD and spray angle were decreased with increasing the bio-diesel blending rate and BD30 (30% bio-diesel blending rate) could be found to be the maximum blending rate for using without any modification of the gun type burner of the homesize kerosene fuel boiler.