• 전자공학회논문지D
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• 제35D권2호
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• pp.93-100
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• 1998

In this paper we analyze the effect of nonlinear gain on laser modulation characteristics applying a small-signal analysis to the rate equation which includes a nonlinear gain term. Also we analyze the resonance frequency and the damping factor which determine laser modulation characteristics, define K factor which is the proportionality factor between resonance frequency and damping factor, and conclude that the decrease in K factor is due to increases in differential gain and no correlation between K factor and nonlinear gain is identified.

• 컴퓨터교육학회논문지
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• 제9권3호
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• pp.67-74
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• 2006

본 연구에서는 학습자가 특정 e-러닝 프로그램을 선호하는데 영향을 미치는 다양한 요인들을 탐색해 보았다. 선호도에 영향을 미치는 다양한 변인들을 열거하고 그러한 변인들을 상관 정도에 따라 공통요인을 추출하는 탐색적 요인분석(exploratory factor analysis)를 실시하였다. 분석 결과, 학습자들이 특정한 형태의 e-러닝 프로그램을 선호하게 되는 주된 요인들은 e-러닝 프로그램의 설계방식(1 요인), e-러닝 프로그램 활용목적(2 요인), 사회문화적 쟁점(3요인), 인구학적 요소(4 요인), 조직의 요구(5요인), e-러닝 프로그램 활용결과(6요인), e-러닝 프로그램 운영관리(7 요인), e-러닝 프로그램의 기술적 환경(8 요인)으로 나타났다.

• 동의신경정신과학회지
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• 제28권3호
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• pp.207-216
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• 2017

Objectives: To simplify the mindfulness scale and to ensure reliability and validity of the scale. Methods: To develop scale items using the original scale and to identify factor structure of the scale, exploratory factor analysis was conducted based on results of factor analysis, the short-form 5-factor mindfulness scale item was selected. Internal consistency coefficient was calculated and confirmatory factor analysis was conducted to verify reliability of the short-form scale. Finally, to verify validity of the abbreviated scale, we conducted correlation analysis with the abbreviated scale and the mindfulness scale (FFMQ). Results: As with the original scales, scaled scales were composed of 5 factors and consisted of 15 items in total. Factor analysis revealed factor loadings were adequate and reliability and validity were secured. Conclusions: It provided that mindfulness shortening scale validation can be used more simply to measure mindfulness in the clinical scene.

• Nuclear Engineering and Technology
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• 제49권4호
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• pp.838-849
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• 2017

This paper proposes penalty factor equations that take into consideration the weld strength over-match given in the classified form similar to the revised equations presented in the Code Case N-779 via cyclic elastic-plastic finite element analysis. It was found that the $K_e$ analysis data reflecting elastic follow-up can be consolidated by normalizing the primary-plus-secondary stress intensity ranges excluding the nonlinear thermal stress intensity component, $S_n$ to over-match degree of yield strength, $M_F$. For the effect of over-match on $K_n{\times}K_{\nu}$, dispersion of the $K_n{\times}K_{\nu}$ analysis data can be sharply reduced by dividing total stress intensity range, excluding local thermal stresses, $S_{p-lt}$ by $M_F$. Finally, the proposed equations were applied to the weld between the safe end and the piping of a pressurizer surge nozzle in pressurized water reactors in order to calculate a cumulative usage factor. The cumulative usage factor was then compared with those derived by the previous $K_e$ factor equations. The result shows that application of the proposed equations can significantly reduce conservatism of fatigue assessment using the previous $K_e$ factor equations.

• 한국의류학회지
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• 제25권8호
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• pp.1386-1397
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• 2001

The purpose of this study was to classify and analyze the somatotype of early middle-aged women and to provide its total data for clothing construction, and to improve clothing culture. The subjects were 277 early middle-aged women between 35 and 44 years old. Data were collected through anthropometry and photometry and analyzed by factor analysis, cluster analysis and discriminant analysis. The results were as follows; 1. The result of factor analysis indicated that 10 factors were extracted through factor analysis and those factors comprised 86.13 percent of total variance. 2. Using factor scores, cluster analysis was carried out and the subject were classified into 4 cluster. Type 1 is tall, slim, and X type in front. Type 2 is standard height and weight, short upper body, and hip-protruded on the side. Type 3 is standard height, thin, H type in front, back and hip are clearly protruded, and lean-back type on the side. Type 4 is standard height, fat, and long upper body. 3. According to the stepwise discriminant analysis, the 8 important iems is classifying the somatotype of early middle-aged women are as follows : bust girth, back length hip breadth-waist breadth, back protruded point depth(back)-back waist depth(back), hip tangent tilt, hip depth(back) waist dapth(back), bust depth-waist depth, and cervical hight, The correct classification rate for these items is as exact as 83.20%.

• 한국의류학회지
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• 제19권2호
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• pp.366-379
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• 1995

This study was performed to provide fundamental data on middle-aged women's upper torso by classifying the upper torso somatotype and analyzing the characteristics of their somatotype. Factor analysis of principal component model was used to 38 directly measured items, and cluster analysis was applied for classification of upper torso forms. Seven factors were extracted from the factor analysis. The first factor represented the items of circumference, breadth, and depth which were related with body size. On the basis of the cluster analysis using factor scores trom factor analysis as being independent variables, the subjects were classified into three groups. Three dress forms were constructed according to the characteristics for each somatotype of subjects, the three-dimensional characteristics of somatotype were analyzied by the moire pattern and horizontal section map of proposed dress forms. Wearing test by moire topography was used to evaluate wearing outline, the ease of clothes and garment space. Moire pattern and horizontal section map were useful to evaluate wearing conditions, and garment space was changed by the characteristics of the body shape.

• Geomechanics and Engineering
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• 제24권4호
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• pp.399-406
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• 2021

It is a key issue in the tunnel design to evaluate the stability of the excavation face. Two efficient analytical models in the context of the limit equilibrium method (LEM) and the limit analysis method (LAM) are used to carry out the deterministic calculations of the safety factor. The safety factor obtained by these two models agrees well with that provided by the numerical modelling by FLAC 3D, but consuming less time. A simple probabilistic approach based on the Mote-Carlo Simulation technique which can quickly calculate the probability distribution of the safety factor was used to perform the probabilistic analysis on the tunnel face stability. Both the cumulative probabilistic distribution and the probability density function in terms of the safety factor were obtained. The obtained results show the effectiveness of this probabilistic approach in the tunnel design.

• Asia pacific journal of information systems
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• 제15권1호
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• pp.81-113
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• 2005

IT has affected the hospital management via information systems and multimedia systems such as hospital information systems(HIS) and Order Communication System(OCS). A large number of researches have been done on the topic of success factors of information systems implementation, but a few on the topics of hospital information systems. Thus in this study, the success factors of the military hospital information systems implementation was analysed. To this end, a number of previous researches were reviewed and about 71 items of success factors were deduced. For doing empirical analysis, a questionnaire with 71 items was prepared and sent to proper organizations. The statistical analysis such as factor analysis was applied to about 400 of them returned. The six success factors and 20 sub success factors were resulted from factor analysis. The six success factors include systems management factor, technology and organization factor, the efficiency of IT department factor, technology application factor, outsourcing factor and environment factors. This study finds the outsourcing and environment factors are very important factors as much as other success factors which previously were mentioned.

• 대한물리치료과학회지
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• 제9권1호
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• pp.123-128
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• 2002

Objectives: The objective of this study was to investigate factor analysis of low back pain patients. Methods: The data were collected from hospital located in Daegu. Observation was made on 40 low back pain patients and factor analysis study was also performed in terms of their abnormal physical findings. Results: The low back pain patients occupied 20% of all clinical patients in male group and 20% in female group. The occurrence of acute low back pain in the first factor tended to be higher among in male group than among in female group. While it was significantly higher muscle weakness of the back in female group. The most prevailing abnormal finding among low back pain patients in the first factor were tender point on the back, While it was significantly lower Decreased tendon reflex in both sexes Conclusions: The factor pattern of abnormal physical findings in low back pain patients was much different between male and female patients, suggesting the different pattern of etiology. Although low back pain is one of the most common symptoms causing limitation activity, as yet there is no known specific effective treatment.

• 한국화재소방학회논문지
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• 제22권2호
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• pp.9-19
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• 2008

최근 다른 행정조직에 비하여 연구가 부족했던 소방행정분야에 체계적인 변화가 나타나고 있다. 특히, 소방수요가 증가하고 형태가 다양화되고 있는데, 가장 시급한 일은 소방수요에 맞게 소방력을 확보하는 일이다. 이러한 소방력의 배치는 주민들의 사회적 후생의 만족으로 이어질 것이다. 본 연구의 목적은 소방력의 결정요인을 찾아보고 소방수요가사회 경제적 요인의 영향을 받는지 알아보는데 있다. 이를 위하여 본 연구에서는 소방력, 소방수요, 사회 경제적 요인, 재정적 요인에 대한 조사를 실시하였다. 그 다음, 이론적 배경과 과거연구를 근거로 4가지 가설을 설정하였다. 가설을 검증하기 위한 통계적 방법은 회귀방정식과 구조방정식분석이다. 본 연구 결과, 소방력은 소방수요와 재정적 요인에 의해서는 양(+)의 유의적인 영향을 받았으나, 사회 경제적인 요인에 의해서는 음(-)의 유의적인 영향을 받았다. 또한 소방수요는 경제적인 요인에 의해서는 양(+)의 영향을 받았으나, 사회적인 요인은 음(-)의 영향을 미친 것으로 나타났다.