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조선,류소연,박종,강명근,김은숙,김형철,박광희,윤혜은,노희송 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2
Objectives: This study was performed to find the association of cigarette smoking and blood lipid profiles in healthy young adults. Methods: The data was collected by a self-administered questionnaire and health examination in 489 professional soldiers from 6 to 12 May, 2004. The status of cigarette smoking was classified by non-smoking, ex-smoked, ≤4.9, 5-9.9, and ≥10 pack-years. The statistical analysis were used by chi-square test, analysis of variance and analysis of covariates. Results: In status of subjects cigarette smoking, current smoking, ex-smoked, and non-smoking were 71.8%, 11.2%, and 17.0%, respectively, In distribution by amount of smoking, non-smoking, ex-smoked, ≤4.9 pack-years, 5-9.9 pack-years, and ≥10 pack-years were 17.0%, 11.2%, 37.4%, 21.3%, and 13.1%, respectively. At other confounding variables were controlled, total cholesterol and LDL-cholesterol were increased significantly when amount of smoking was increased. However, triglyceride and HDL-cholesterol did not showed statistically significant differences, Conclusion: Smoking has relevant to total cholesterol and LDL-cholesterol and it is need to perform the further study for finding how blood lipid profiles are affected its level by cigarette smoking and to find an influence of cigarette smoking on cardiovascular disease.
전용진,조석형,홍영호,한종필 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-
폴리카본산계 기능성 고분자를 합성해서 고성능 감수제 원료로 활용하여 고유동화 혼화제를 개발하고자 한다.폴리카본산계 기능성 고분자를 합성한 후, 이를 고유동, 고강도 혼화제 원료로의 제반 물성을 확인하고, 이를 현장에 적용하여 현재의 제품을 획기적으로 개선하고, 혼화제 품질의 우위성을 확보하기 위해 1)시멘트 및 골재 표면에서의 적절한 계면활성을 갖는 분자설계를 하였으며, 2)분자량의 조절 기술의개발를 개발하였다. 합성에 있어서 첫째, 시멘트 및 골재 표면에서의 적절한 계면활성을 갖는 분자설계와 둘째, Mw 5,000정도의 분자량을 갖는 감수제의 합성기술을 개발하였다.이렇게 제조된 고성능 유동화제의 화학구조 해석를 해석하고 분자량 및 분자량 분포를 측정한 다음, 시멘트 페이스트의 유동성, 점도, 슬럼프로스 등을 측정하여 고성능 유동화제의 성능인 시멘트 페이스트의 유동성을 시험하였다.그 결과 고유동성을 갖는 것과 장시간 안정한 유동성을 나타내었으며, 경과 시간에 따른 겉보기 점도변화를 측정한 결과 점도의 상승이 초기에 일어나다가 시간의 경과에 따라 점도가 감소하는 경향을 나타내었다.따라서 경과시간에 따른 유동성손실을 억제할 것으로 기대한다.
김창희,김혜숙,조혜성,이순옥,함형미,박미미 성인간호학회 2000 성인간호학회지 Vol.12 No.4
The purpose of this study was to examine the effect of preceptorship on On the Job Training of new nurses. The research design was a retrospective survey and one group pre-rost test design. The subjects were 49 entry nurses and 49 preceptors The data were collected from Feburary 1, 1998 to December 1, 1998. One questionnair applied in this study consisted of general characteristics, the responses of new entry nurses and their preceptors and their qualities. The other questionnair consisted of job satisfaction of new entry nurses and Preceptors and their competencies. The data were analyzed for frequencies, mean score, standard deviation, t-test, and ANOVA. The results of the study were as follows : 1) Preceptees's responses were that the nurses' affiliation of unit. cooperation of other nurses, and competencies of nursing skills improved after OJT applied preceptorship. 2) Preceptors's answers were that preceptorship had a positive effect on their continuing education. 3) While preceptees's job satisfaction scores were high in interaction, administration, and organization, they were low in autonomy and pay. 4) Pre-competency scores were the same as post-competency scores. 5) After preceptorship, preceptors responded that their nursing skill & communication competency increased, but their nursing administration competency decreased. 6) Finally, preceptorship's other effects were as follows: ① Checklists for preceptee education at the nursing unit were developed separately. ② It was proved that 'preceptor interview note' was effective on manage preceptorship. ③ We obtained duty orierlap periods, medical-surgical units-1 month. 5 ICU-2 months. operaction room-3 months ④ We prepared a preceptor program based on the study results.
Young-Suk Son,Hong-Hee Son,Yong-Suk Kim,Hyeong-Seog Oh,Gyu-Hyeong Cho IEEE 2007 IEEE transactions on circuits and systems. a publi Vol.54 No.12
<P>In this brief, simple analytical solutions for pre-emphasis driving conditions in active-matrix liquid crystal display (AMLCD) applications are presented. According to the solutions presented, the column driver with a gray-level dependent pre-emphasis (GLDP) function is designed for fast settling. The GLDP column driver is implemented without using additional frame memory. Also, modifications to the display system and integrated circuit fabrication process changes are not required. The GLDP column driver provides output voltage signals with variable pre-emphasis durations according to the magnitude of the gray-level shift to be driven. By applying the GLDP column driver, 8-mus reduction of the required one row line time was achieved on average. This one row line time reduction makes it possible to realize high performance and low cost AMLCDs. The 640 channel, full function GLDP column driver is fabricated by a 13.5-V 0.35-mum CMOS process.</P>
국내 저출산 관련 연구 동향 분석: 2011~2020년 중심으로
조형숙(Cho, Hyeong-Suk),조현정(Jo, Hyun-Jeong) 한국영유아교원교육학회 2021 유아교육학논집 Vol.25 No.3
본 연구는 2011년에서 2020년까지 발행된 국내 석 · 박사학위논문과 학술지를 대상으로 선정기준에 부합된 총 584편을 분석하여 저출산 관련 연구 동향을 밝혔다. 분석 기준은 연구시기 및 발표유형, 연구자 전공, 연구대상, 연구방법(연구유형, 자료 수집 방법, 자료 분석 방법), 연구내용으로 선정하고 빈도 분석하였다. 연구의 결과는 다음과 같다. 첫째, 저출산 관련 연구물은 2011년이 가장 많았고 학술지 연구의 비중이 높았다. 둘째, 연구자의 전공은 사회복지학과 정책 · 행정학에 편중되었다. 셋째, 통계자료 및 패널자료, 문헌자료를 활용한 연구가 인적대상 연구보다 두 배 이상 높게 나타났다. 인적대상에서는 기혼자 여성에 대한 연구가 많았고 미혼자 대상 연구는 증가하였다. 넷째, 양적연구가 가장 많았고 질적연구는 미비하였다. 2차 자료 수집 연구와 변인간의 다층적인 관계검증 비중이 높았다. 다섯째, 출산요인과 저출산 현황 및 정책적 대응 연구가 많이 이루어졌다. 본 결과를 통해 저출산 관련 연구의 실태와 동향을 파악함으로써 유아교육 · 보육, 가족을 중심으로 후속 연구와 정책 방향 설정에 기초자료를 제공하였다. This study analyzed trends in research on a total of 584 theses/dissertations and academic journals on low fertility in Korea for 10 years from 2011 to 2020. The criteria for analysis were selected and analyzed by research details, timing and published type, field of researcher’s major, subject of study, research method (research type, data collection method, data analysis method), and research contents. The results of the study are as follows. First, research related to low fertility was the largest in 2011, and the proportion of academic journal research was high. Second, the researcher’s major was focused on social welfare and policy and administration. Third, research using statistical data, panel data, and literature data was more than twice as high as human research. There were many studies on married women in human subjects, and the number of studies on unmarried people increased. Fourth, quantitative research was the most common and qualitative research was insufficient. The proportion of secondary data collection research and multilayered relationship verification between variables was high. Fifth, many studies have been conducted on factors of fertility, the current status of low fertility, and policy responses. Through this result, we provided basic data on follow-up research and policy direction, focusing on early childhood education, child care, and family, by identifying the status and trends of low birth rate research.