• 전자공학회논문지S
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• 제36S권2호
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• pp.57-62
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• 1999

점확산 함수(point spread function: PSF)의 정확한 주정은 복원결과가 원 영상에 얼마나 근접할 수 있는가를 결정한다는 점에서 영상처리의 중요한 연구 주체중의 하나가 된다. 본 논문에서는 PSF를 추정하기 위한 새로운 알로리즘을 제안하고, 이를 영상복원에 적용한 후 이를 기반으로 완전 디지털 자동초점 시스템을 제안한다. 자동초점시스템을 구현하기 위한 과정은 두 단계로 구성되어 있는데, 즉 에지 분류을 통한 PSF측정과, 이를 이용한 영상복원이다. 보다 구체적으로, 입력 영상을 다수의 소 영상 혹은 블록으로 분할한 뒤, 에지를 포함하고 있는 블록들로부터 단위계단응답을 구하여 평균한 후, 2차원 등방성 PSF를 추정한다. 마지막으로 추정된 PSF를 사용하여 영상복원을 수행함으로써 맞는 영상을 구한다.

• Transactions on Electrical and Electronic Materials
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• 제3권1호
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• pp.30-37
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• 2002

A focusing grating coupler (FGC) was not fabricated by the 'Continuous Path Control'writing strategy but by an electron-beam lithography system of more general exposure mode, which matches not only the address grid with the grating period but also an integer multiple of the address grid resolution (5 nm). To more simplify the fabrication, we are able to reduce a process step without large decrease of pattern quality by excluding a conducting material or layer such as metal (Al, Cr, Au), which are deposited on top or bottom of an e-beam resist to prevent charge build-up during e-beam exposure. A grating pitch period and an aperture feature size of the FGC designed and fabricated by e-beam lithography and reactive ion etching were ranged over 384.3 nm to 448.2 nm, and 0.5 $\times$ 0.5 mm$^2$area, respectively. This fabrication method presented will reduce processing time and improve the grating quality by means of a consideration of the address grid resolution, grating direction, pitch size and shapes when exposing. Here our investigations concentrate on the design and efficient fabrication results of the FGC for coupling from slab waveguide to a spot in free space.

• 디지털융복합연구
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• 제19권12호
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• pp.261-271
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• 2021

본 연구는 중소기업의 물리적 업무 환경이 업무 만족과 업무 성과에 미치는 영향을 실증적으로 분석하기 위해 이루어졌다. 본 연구를 위해 물리적 업무 환경을 세분화하여 개인집중업무 공간, 협업 공간, 어메니티 공간으로 나누어 연구 모형을 설정하였다. 실증 분석을 위해 중소기업 종사자를 대상으로 설문을 조사하였다. 유효한 250부를 분석의 대상으로 삼았다. SPSS 24를 활용하여 다중회귀방식으로 가설을 검정하였다. 연구 결과는 다음과 같다. 개인집중업무 공간, 협업 공간, 어메니티 공간 모두 중소기업 종업원의 직무 만족에 유의한 정(+)의 영향을 미쳤다. 또한 개인집중업무 공간, 협업 공간은 직무 성과에 유의한 정(+)의 영향을 미쳤다. 어메니티 공간은 직무 성과에 유의한 영향 관계가 검정되지 않았다. 물리적 업무 환경과 종업원의 직무 만족, 직무 성과간의 관계를 규명한 연구가 부족한 상황에서 이들의 인과관계를 규명한 것이 본 연구의 기여도로 사료된다. 향후 연구에서는 궁극적으로 기업의 경영성과와의 관계 규명이 필요할 것으로 보인다.

• 보건교육건강증진학회지
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• 제31권3호
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• pp.27-37
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• 2014

Objectives: This study aims to identify the factors associated with regular medical services utilization of chronic disease patients. Methods: The research selected 4,489 adults aged over 30, diagnosed with hypertension, diabetes, hyperlipidemia, hypercholesterolemia, from the Korea health panel. We analyzed states of regular medical service utilization using descriptive statistics. Multiple regression analysis was used to examine the main factors associated with regular medical services utilization in chronic disease patients. Results: In terms of socio-demographic factors, gender, age, marital status, education level, employment, household income and disability were significantly different between hypertension, diabetes, hyperlipidemia and hypercholesterolemia. Among health status and behavioral factors, number of chronic diseases, subjective health status, smoking, high risk drinking, regular meals, physical activity, obesity were significantly different. From the multiple logistic regression analysis, age, number of chronic diseases, obesity, type of chronic diseases were associated with regular medical services utilization. Conclusions: It is necessary to develop effective health education programs and individualized approach to improve continuous management in chronic diseases patients.

• 간호행정학회지
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• 제11권1호
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• pp.45-58
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• 2005

Purpose: The purpose of this study was to identify the relationship among self-leadership, job satisfaction, and perceived outcome in nurses. Method: The subjects of study were nurses as a population who were working for the 2 of university hospitals which have over 500 beds in Kyong Ki Province as well as who have been working for over 6 months. The data was collected by questionnaires from 217 nurses and analyzed using descriptive statistics, pearson correlation coefficient, and multiple regression on SPSS 10. 0 version. Results: The degree of Self-leadership was 3.38 out of 5 as a mean point. There was a significant difference in self-leadership according to age, level of education, working department, and position. There was a significant positive correlation between self-relationship and job satisfaction, self-relationship and perceived outcome, and job satisfaction and perceived outcome. The stepwise multiple regression analysis revealed that the most powerful predictor of job satisfaction and perceived outcome was constructive thinking. Conclusion: In conclusion, the result was obtained that self-leadership is much correlated with job-satisfaction of nurse and outcome of nursing practice. Therefore, as a way to promote efficiency of nursing organization, the constant study about self-leadership with the various aspects is needed focusing on self-management and inner motivation as a new leadership paradigm.

• 한국의류학회지
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• 제24권4호
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• pp.487-497
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• 2000

The purpose of this study was performed 1) to study the differences in advertisement expression and brand preference according to the lifestyle groups of high school girl students(Sports Uninterest Group, Friend Preference/Fashion Uninterest Group, Sports Preference/Horne Oriented Group. fashion Interest Group, and Confidence Group) and 2) to investigate the effects on the brand preference of adolescents of lifestyle, brand and advertisement image and advertisement expression forms. The subjects selected for the final analysis were high school girl students living in Pusan, Seoul and Taejeon, Korea. The statistics used for data analysis were factor analysis, one-way ANOVA, Duncan's multiple range test, stepwise multiple regression, frequency distribution and percentage by the SPSS program. The results of this study were as follows: 1. The preferences of advertising expression forms were significantly different among lifestyle groups: the Friend Preference/Fashion Uninterest Group preferred to sex appealing advertising expression form less than other groups. 2. The brand preferences were significantly different among lifestyle groups: the Confidence Group preferred brand less than other groups in general. 3. The brand preferences were affected by life style, brand and advertising image and preferences of advertising expression forms. And brand image influenced most significantly on the brand preferences.

• 간호행정학회지
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• 제7권1호
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• pp.41-51
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• 2001

Today's health care environment is rapidly changing and nurse administrators' leadership styles need to identify in nursing organization to achieve organizational objectives. By Bass(1985), transformational leadership stimulates the subordinates to be creative and achieve organizational objectives and is related to job satisfaction, job involvement, productivity, and organizational commitment. Transformational leadership process consists of charisma, intellectual stimulation, individual consideration. The purpose of this study is to identify the effect of transformational leadership and personal characteristics on nurses' organizational commitment. The subjects for this study consisted of 594 nurse from 8 University Hospitals and General Hospitals. The data were collected by personal characteristics scale, transformational leadership scale, and organizational commitment scale. The factor analysis, Cronbach's alpha analysis, Pearson correlation analysis, multiple regression analysis and hierarchical multiple regression analysis were used for the statistical method. The results of this study were found that (1) charisma dimension of transformational leadership has positive influence on nurses' organizational commitment; but another two dimensions(intellectual stimulation and individualized consideration) did not showed significant effect on organizational commitment (2) nurses' personal characteristic(internal locus of control) moderated the effect of transformational leadership on organizational commitment.

• 한국조리학회지
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• 제12권2호
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• pp.1-17
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• 2006

This study is to develop a viable measurement tool of crowdedness in restaurants. First, to measure customer’s awareness of crowdedness related to each different environmental factor in a restaurant, 49 factors of crowdedness awareness were selected based on the previous studies and then properties of each factor affecting customer’s satisfaction for crowdedness were analyzed. To analyze effects of each factor upon the satisfaction rate, a Multiple Regression Analysis was conducted with the crowdedness awareness as an independent variable and satisfaction of crowdedness as a dependent variable. The results showed that when an analysis of the environmental factors in the crowdedness awareness was conducted in an effort to develop a measurement tool of crowdedness awareness in restaurants, that would be fit for the domestic food service market, based upon 49 factors of restaurant environment. Focusing on expectation and satisfaction rate, it was found that rating the satisfaction level would be a much more effective tool to measure crowdedness awareness because satisfaction rate appeared to be more closely related to the awareness than the results obtained from the Multiple Regression Analysis with a difference between expectation and satisfaction scores as an independent variable.

• 조명전기설비학회논문지
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• 제28권2호
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• pp.54-59
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• 2014

The electric power can be converted into the mechanical power by a corona discharge system. This way has not stronger force than a electric motor. But it has been applied in various industrial fields because of many advantages, no moving parts, smaller noise, simpler structure, minimizing et al. In this paper, corona discharge system with multiple corona electrode installed in form of the ring, has been studied by focusing on the electrical and mechanical characteristics. Intensity of the corona discharge depends on applied electric field, and electric field is related to the applied voltage, discharge gap spacing(s), distance between each corona electrodes(d). As a result, in the case d/s=0.9, most intensive discharge occurred in this experiments. In the region of d/s<0.9, ionic wind velocity has saturation value in spite of decreasing corona current, because each ion velocities increase by the increasing electric field.

• 한국안전학회지
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• 제35권2호
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• pp.55-60
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• 2020

The purpose of this study is to analyze the influence of the economic and workforce factors on the annual number of occupational accident fatalities occurring at the construction sites. The considered variables of the economic factor are the amount of economic losses caused by industrial accidents, the GDP, and the total monthly wage for each economically active population. And, the variables related to the workforce factor are the number of economically active population, the number of female economically active population, and the number of labor union members. The multiple regression analysis was conducted to determine the effect of two factors on the total number of occupational fatalities in the construction industry. The results show that GDP among considered variables in the economic factor had a statistically significant negative relationship with the number of the construction accident fatalities in the construction industry. Among variables related to the workforce factor, economically active population showed a statistically significant negative relationship with the number of the construction accident fatalities.