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문숙경 목원대학교 사회과학연구소 1999 社會科學硏究 Vol.- No.3
정치, 경제, 교육 등 사회 전반에 걸쳐 나타나는 여러 문제를 해결하기 위해서, 나아가 새로 운 정보를 얻기 위해서, 설문지를 이용한 조사가 여러 곳에서 실시되어지고 있다. 설문지 조사의 핵심 작업은 무엇보다 설문지의 질문 문항들을 조사목적에 부합되도록 적절하게 잘 작성하는 일이므로 본 고에서는 설문지 문항 작성의 기틀이 되는 설계단계시 고려해야할 기 본적인 지침 사항들과 방법론 및 절차에 관하여 예제를 통하여 설명하였다. 자료 분석 등 몇 가지 고려사항들을 설계시 제안하였으며, 끝으로 본고에서 제시된 방법에 따라 항목/질 문 문항 설계의 실제 예를 제시하였다.
문숙경,김우성 한국품질경영학회 2004 품질경영학회지 Vol.32 No.4
We got the growth distance curve by spline smoothing method with observed marketing data and the growth velocity curve by the derivation of the growth distance curve. Using this growth velocity curve, we defined the several characteristic points which describe the variation of marketing data. In this paper, to specify several patterns of marketing data, we suggested characteristic function by using these characteristic points. In addition, we applied characteristic function to the seventeen brands of electric home products data.
朴淑衡,曺圭澄 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.1
The purpose of this study was to observe the pH level changes of several canal sealers after root canal obturation. Eighty root canals of extracted human anterior teeth were prepared by step-back method and obturated with laterally condensed gutta-percha combined with Z. O. E., Tubli-Seal, NOgenol, Sealapex, FR, AH-26, Diaket separately and then immersed in a plastic bottle containing distilled water of pH 7. The pH levels of the solution were determined at 1 day, 3 days, 5 days, 1 week and 2 weeks after storing in water bath of 37℃. The results were as follows: The pH levels of the Sealapex solution were significantly higher than those of all the other solutions at the 1 day and the 3 days(p<0.01), but there was no significant differences between the other groups(p>0.05). The pH levels of the Sealapex solution were significantly higher than those of Z. O. E., NOgenol and AH-26 solutions at the 5 days(p<0.05), but there was no significant differences between the other groups(p>0.05). There was no significant differences between the pH levels of the Sealapex solution with time elapse from 1 day to 2 weeks (p<0.05). J. Kyungpook Univ. Sch. Dent. Vol. 7, No. 1,135∼143,1990
다중입력영역시험에서의 대형 소프트웨어 고장률 추정 연구
문숙경 한국품질경영학회 2002 품질경영학회지 Vol.30 No.3
In this paper we introduce formulae for estimating the failure rate of a large scaled software by using the Bayesian rule when a black-box random testing which selects an element(test case) at random with equally likely probability, is performed. A program or software can be treated as a mathematical function with a well-defined (input)domain and range. For a large scaled software, their input domains can be partitioned into multiple subdomains and exhaustive testing is not generally practical. Testing is proceeding with selecting a subdomain, and then picking a test case from within the selected subdomain. Whether or not the proportion of selecting one of the subdomains is assumed probability, we developed the formulae either case by using Bayesian rule with gamma distribution as a prior distribution.
Geum-Soog Kim,Seung-Eun Lee,Hyung-Jun Noh,Hyuck Kwon,Sung-Woo Lee,Seung-Yu Kim,Yong-Bum Kim 고려인삼학회 2012 Journal of Ginseng Research Vol.36 No.4
This study was conducted to evaluate the effects of natural bioactive products such as Manda enzyme (T1), Yangmyeongwon (T2), effective microorganisms (T3), and Kelpak (T4) on the growth and ginsenoside contents of Panax ginseng cultured in an aeroponic system using a two-layer vertical type of nutrient bath under natural light conditions. The growth of ginseng plants showed specifi c characteristics according to the positions in which they were cultured due to the difference of light transmittance and temperature in the upper and lower layers during aeroponic culture in a two-layer vertical type of system. The growth of the aerial part of the leaves and stems of ginseng plants cultured in the lower layer (4,000 to 6,000 lx, 23°C to 26°C) of the nutrient bath was observed to be superior to that of the ginseng plants cultured in the upper layer (12,000 to 15,000 lx, 25°C to 28°C). The leaf area was signifi cantly larger in the treatment of T2 and T4 (46.70 cm2) than with other treatments. Conversely, the values of the root weight and root diameter were higher in ginseng plants cultured in the upper layer of the nutrient bath. The root weight was signifi cantly heavier in the treatment of T4 (6.46 g) and T3 (6.26 g) than with other treatments. The total ginsenoside content in the leaves and roots was highest in the ginseng plants cultured by the treatment of T1, at 16.20%, while the total ginsenoside content obtained by other treatments decreased in the order of T4, T5 (control), T2, and T3, at 13.21%, 12.30%, 14.84%, and 14.86%, respectively. The total ginsenoside content of the ginseng leaves was found to be signifi cantly higher in the treatment of T1 in the lower layer of the nutrient bath, at 15.30%, while the content of the ginseng roots in the treatments of T3 and T4, at 1.27% and 1.23%, respectively, was signifi cantly higher than in other treatments in the upper layer of the nutrient bath.
( Geum Soog Kim ),( Seung Eun Lee ),( Tae Sook Jeong ),( Chun Geun Park ),( Jung Sook Sung ),( Jung Bong Kim ),( Yoon Pyo Hong ),( Young Chul Kim ),( Kyung Sik Song ) 한국응용생명화학회(구 한국농화학회) 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.4
β-Sitosterol (1), betulinic acid (2), and 3β-hydroxy-20(29)-lupen-28-oic acid methyl ester (3) were isolated from the herbal parts of Lythrum salicaria. Compounds 2 and 3 were isolated for the first time from L. salicaria and they showed inhibitory activities on both hACAT1 and hACAT2. These results suggested that L. salicaria, which contains triterpenes 2 and 3, might be effective in the prevention and treatment of hypercholesterolemia or atherosclerosis due to its inhibitory effect on hACAT.
Factors affecting parental choice of childcare service for pre-school age children
Jong-soog Kim 한국여성정책연구원(구 한국여성개발원) 2013 Gender Studies and Policy Review Vol.6 No.-
The goal of this research is to identify whether women’s economic participation and types of employment affect their choice of childcare provider for pre-school aged children. Childcare options were classified into at-home care, preschool, daycare, and private educational institutions. A multinominal logit model was used to analyze the factors influencing each choice. The thirdwave data of the Korean Longitudinal Panel Survey of Women and Family (KLoWF), which includes both women’s employment variables and household childcare variables, was used. A total of 1,538 women with pre-school age children and the 543 among them who were participating in economic activities were subject to analysis. The findings of this research are as follows. While working mothers exhibited a greater propensity to use daycare facilities than did non-working mothers, when only working mothers were examined their type of employment and profession proved irrelevant to their choice between preschool and daycare. In terms of choice between daycare, at-home care, and private educational institution, excluding preschool as an option, certain professions and most employment types strongly preferred daycare. In conclusion, it is considered that while daycare-oriented policies are highly desirable in assisting working women with their childcare, the impact of both the specific type of employment and profession is negligible in working mothers’ choices between preschool and daycare. This suggests that child-related variables play a greater role in this choice than do women’s employment variables.