• Journal of the Korean Statistical Society
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• 제22권1호
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• pp.39-54
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• 1993

In the three-factor nested variance component model with equal numbers in the cells given by $y_{ijkm} = \mu + A_i + B_{ij} + C_{ijk} + \varepsilon_{ijkm}$, the exact confidence intervals of the variance component of $\sigma^2_A, \sigma^2_B, \sigma^2_C, \sigma^2_{\varepsilon}, \sigma^2_A/\sigma^2_{\varepsilon}, \sigma^2_B/\sigma^2_{\varepsilon}, \sigma^2_C/\sigma^2_{\varepsilon}, \sigma^2_A/\sigma^2_C, \sigma^2_B/\sigma^2_C$ and $\sigma^2_A/\sigma^2_B$ are not found out yet. In this paper approximate lower and upper confidence intervals are presented.

• 한국병원경영학회지
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• 제19권4호
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• pp.9-20
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• 2014

The purpose of this study is to find out factors affecting patient moving to receive medical service. This study is analyzed by multi-level model with patient and hospital level by using SAS 9.3. Total number of patients is 600,000 persons for inpatients and 550,000 patients for outpatients. The degree of the factors, which is combined with personnel factor and hospital factor, can be analyzed by Intra-Class Correlation (ICC). The percentage of group(hospital) level variance of the total variance for out-bound moving case are 30.6% at inpatients, and 28.3% at outpatients. And the percentage of hospital level variance of the total variance for moving distance, are 26.7%, 32,5% respectively. Conclusionally, although the main factor of moving is patient level, hospital is also very important factor to make decision to go out-bound. It contributed to about 1/3 for hospital choice. And, when the one make decision, he will consider the hospital type, number of bed, and training institute in hospital level. Through this study to find out hospital factors affecting patient moving for medical service, it must be continued to find out which factors have more influence to choice the hospital among disease type after this.

• 한국정보통신학회논문지
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• 제5권4호
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• pp.653-660
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• 2001

본 논문에서는 주파수합성기에서 가장 큰 잡음원인 VCO 및 각 단에서 발생하는 위상잡음 의 offset주파수에 따른 변화를 예측하기 위해 2303.15MHz의 주파수합성기를 설계하고 Lascari의 예측방법 을 이용하여 모델링 하였다. 또한, VCO에서 발생되는 여러 중첩 형태로 된 위상잡음중 저주파대역에서 문제가 되는 1/f noise를 3차 시스템에서 분석하였다. 3차 시스템에서는 해석이 복잡하므로 수학적인 분석을 통하여 1/f noise를 예측한다는 것이 어렵지만 pseudo-damping factor의 도입으로 3차 시스템에서의 1/f noise variance의 해석이 용이 하도록 시도하였고 이를 2차 시스템과 비교.분석하였다. 그 결과, tcxo의 경우 위상잡음이 루프 통과 전 10 kHz offset 주파수에서 -160dBc/Hz, 루프 통과 후 -162.6705dBc/Hz, 100 kHz offset 주파수에서 -180dBc/Hz, 루프 통과 후 -560dBc/Hz로 VCO의 위상잡음에 비해 offset주파수에 따라 루프 통과 후 급격히 감쇠 됨을 알 수 있었다. 2차와 3차 시스템에서의 잡음대역폭과 그 variance factor를 연관하여 3차 시스템에서 의 variance가 2차 시스템의 variance보다 크게 발생함을 알 수 있었다.

• 통상정보연구
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• 제10권4호
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• pp.417-437
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• 2008

Korean firms have had a short history of foreign direct investment and export in China market entry. This present study empirically analyzed determinants of the choice of foreign market entry modes, Particularly forcusing on the China market entry on Korean manufacture firms. This study developed a research model to determinant factor in the China market entry and collected 77 survey responses from the Korean manufacture firms. This study model construct in the third factor, China market character, company character and product character. In China market character, the variance are China trade barrier, culture different, competition power. The variance in company character are internationalization experience, enterprise rage and entry motivation. Also the variance in product character are product different, customer service and cost advantage. It is researcher's main interest that which type of China market entry format brought most positive evaluation form the Korean manufacture firms. therefor, these research results turned out to be different a little both export and direct investment in China market of Korean manufacture firms.

• 복식
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• 제58권2호
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• pp.162-180
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• 2008

The purpose of this study is to find the basic design factors that affect the changes in body surface lines caused by lower limb movements, thereby resulting in slacks that fit well regardless of whether the human form is static or in motion. Using unmarried female university students aged 18-24 as subjects, a total of 32 body surface lines (15 body surface total lines and 17 body surface segment lines) were measured in one static and 9 movement poses, The analysis first involved the calculation of the expansion and contraction rates per body part in body surface line in 9 lower limb movements, Second, a factor analysis was conducted using the expansion and contraction rates of these changes in body surface line. The results of this study are as follows, According to the factor analysis, basic design factors that affect changes in body surface lines comprised 8 types of factors as illustrated in fig, 2-fig, 9, which explained 79.2% of total variate for the variables studied, Factor 1, comprising the lower segment of center back leg line, center front leg line and inner leg line, and lower limb girth except midway thigh girth and ankle girth below hip girth, accounted for 30.3% of total variance, Factor 2, comprising waist girth, the total and upper segment of center back leg line and center tront leg line, and front and back segment of crotch length, explained 17.4% of total variance, Factor 3, the total and upper segment of lateral leg line at the center, accounted for 56.5% of total variance in accordance with Factors 1, 2, and 3, Factor 4 was the contracting upper part of lower leg between legscye girth and midway thigh girth, Factor 5 comprised the total and upper segment of inner leg line and posterior knee girth, Factor 6 was the total crotch length, Factor 7 was the ankle girth, Factor 8 was the abdomen girth.

• 성인간호학회지
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• 제26권4호
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• pp.403-412
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• 2014

Purpose: The purpose of this study was to validate the Korean version of shortened Nursing Decision-Making Instrument developed by Lauri & $Salanter{\ddot{a}}$(2002). Methods: The subjects were 247 nurses working in eight hospitals of Korea. Data were collected by questionnaires from June to July, 2012 and were analyzed by Principal Component Analysis for construct validity and Cronbach's ${\alpha}$ coefficient for reliability. Results: Factor loadings of the four subscales ranged from .32 to .73. The explained variance from the four factors was 48.54% of the total variance. The factors were named 'implementation of plan, monitoring and evaluation', 'plans of action', 'data collection', and 'data processing and identification'. The first factor consisted of 6 items which explained 13.21% of the total variance and the second factor contained 8 items. The Cronbach's ${\alpha}$ coefficients of the four subscales were from .64 to .81. Conclusion: The Korean version of the shortened Nursing Decision-Making Instrument has satisfactory construct validity and reliability. However, that the scores of the analytic items weren't reversed unlike the analysis method of the original tools is the biggest limitation of this study. In addition, based on the fact that there were several discrepancies for item interpretation of Korean comparing to the findings of the instrument development study, repetitive researches would be suggested.

• 성인간호학회지
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• 제20권3호
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• pp.470-480
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• 2008

Purpose: The purpose of this study was to validate the scale of Informatics Competencies for Nurses developed by Staggers, Gassert & Curran(2001) among Korean nurses. Methods: The subjects of this study were 58 RN-BSN students and 314 nurses in Busan, Ulsan and Kyoungnam province. Data were collected by questionnaires from June to August, 2006 and from October, 2006 to August, 2007 and were analyzed by Principal Component Analysis for construct validity and Cronbach's ${\alpha}$ coefficient for reliability. Results: A factor analysis was conducted and 30 items that had a factor loading more than .40 were extracted. The explained variance from 5 factors was 55.33% of the total variance. The factors were named 'basic computer usage', 'medical informatics-related software usage', 'computer related information management', 'perception of informatics', and 'information search using internet'. The first factor consisted 10 items which explained 29.89% of the total variance and the second factor contained 7 items. The Cronbach's ${\alpha}$ coefficient was .91 among the 30 items. Conclusion: This scale, Informatics Competencies for Nurses, was proved as a proper instrument to apply to Korean nurses.

• 복식
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• 제53권3호
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• pp.63-72
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• 2003

The purposes of this study were to classify the upper half of body somatotype and analyze the characteristics of each somatotype. The subjects of survey were 272 elementary school boys of 11 to 12 years old living in Pusan and Kyungsangnam-do. Datas were collected through 36 anthropometric measurements and 7 photographic measurements. They were analyzed by factor analysis, cluster analysis and analysis of variance. The results of the study were as follows : 1. According to the factor analysis. seven factors were extracted from measurements of the upper half of body and those factors comprised 79.62% of total variance. Specially factor 1 was characterized sectional size and factor 2 was characterized longitudinal size comprised 58.83% of total variance. 2. According to the cluster analysis, the upper half of body somatotype was classified four types : Boys in type 1 had quite high stature and big frame, broadest and most sloping shoulders, flattest chest and belly, quite protruded shoulder blades boys in type 2 had quite short stature and small frame, quite broad and most rising shoulder, most protruded belly, quite protruded shoulder blades boys in type 3 had shortest stature, smallest frame, narrowest and quite rising shoulders, most protruded chest, flattest shoulder blade and quite flat belly : boys in type 4 had highest stature, biggest frame, most protruded shoulder blades and quite protruded chest and belly.

• 한국의류학회지
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• 제22권3호
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• pp.333-340
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• 1998

The purpose of this study was to classify the lower body somatotype based on the side view and to analyze the characteristics of each somatotype. The subject were 234 Korean Junior High School Girls. Data were collected through photographic sources and analyzed by factor analysis, cluster analysis and analysis of variance. The result of factor analysis indicated that 4 factors were extracted through factor analysis and those factorscomprised 73.5% of total variance. Using factor scores, cluster analysis was carried out and the subject were classified into 3 clusters. Each cluster was classified as their lower bobs side view contour.

• 한국의류학회지
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• 제23권3호
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• pp.345-352
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• 1999

the purpose of this study was to consider the lower bodyshape factor of girls according to their age groups. The subject were 150 Korean Elementary School Girls and 150 Korean Junior High School Girls. The subjects were directly measured anthropometrically. In first group(Elementary School Girls) the result of factor analysis indicated that 7 factors were extracted through factor analysis and those factors comprise 83.1% of total variance and in second group (Junior High School Girls) 8 factors were extracted through factor analysis and those factors comprise 79.9% of total variance. Lower bodyshape factors were different to each groups. So these systematic information on typical bodyshape were provide to reduce the burden of stocks and increase clothing fitness.