• 대한기계학회논문집
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• 제9권6호
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• pp.743-749
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• 1985

본 연구에서는 Gas Chromatograph를 사용하여 1,500㏄급 국산 소형 승용차 엔 진의 배기가스 성분을 분석하였다. 그리고 이를 통하여 배개가스 성분 분석에 Gas Chromatograph를 사용할 경우 아래와 같은 점에 유의한다면 배기가스 성분을 비교적 정확하게 측정할 수 있다는 것을 확인하였다.

• 한국환경과학회지
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• 제21권6호
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• pp.713-724
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• 2012

Emission rates of biogenic hydrocarbon emitted from broad-leaved trees grown at Jeju Island were estimated using a dynamic enclosure method. Leaf temperature, PAR and relative humidity were monitored during the sampling time. The emission rates of isoprene and monoterpene were measured for five plants(Carpinus laxiflora, Quercus serrata, Styrax japonicus, Quercus acutissima, Quercus crispula) during the sampling period at the Halla mountain sites. Among five tree species, the highest isoprene emission rate of 10.60 ${\mu}g\;gdw^{-1}hr^{-1}$ was observed for Quercus serrata. The seasonal emission rates were the highest during summer and the emission of isoprene was highly affected by light and temperature variations. The highest emission rate of isoprene was occurred between 13:00 and 14:00, but isoprene was not emitted in nighttime because of the absence of light.

• 응용통계연구
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• 제29권7호
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• pp.1329-1346
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• 2016

한국 의료패널 데이터와 국민건강 영양조사는 추출된 표본의 자가 진단에 따른 건강상태(self-assessed health)와 그들의 의료기관 이용에 대한 자가응답식 자료(self-reported data)이다. 이러한 자료에 근거한 유병률 연구 및 그에 따른 건강기대수명 연구에 관하여 유병률의 신뢰도에 대한 검증이 선행되어야 한다는 주장은 이미 여러 연구에서 제기되었다. 반면 최근 공개된 건강보험공단의 표본코호트 DB는 전 국민을 대상으로 의료기관 이용에 관련된 모든 자료가 저장된 자료인 국민건강정보 DB로부터 추출된 객관적인 자료이다. 또한 추정된 질병별 유병률에 대하여 그 대표성 및 신뢰도가 확보되어 있음이 검증된 자료이다. 이에 본 논문에서는 우리나라 국민의 유병률에 대한 대표성 및 신뢰도가 확보되어 있는 표본코호트 DB와의 비교를 통하여 이들 응답식 데이터에서 도출된 유병률의 신뢰도에 대하여 논의하였다. 자가응답식 자료를 통한 유병률은 표본코호트 DB를 통한 유병률에 비교하여 보았을 때 과소추정되어 있고 이러한 과소추정은 건강기대수명의 과대추정 문제로 이어지고 있음을 확인할 수 있었다. 또한 표본코호트 DB를 제외한 우리나라 건강자료의 안정적이지 못한 표본의 문제는 추정된 건강기대수명의 트렌드를 왜곡하는 문제가 추가적으로 발생할 수 있음을 확인하였다.

• 시큐리티연구
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• 제47호
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• pp.119-137
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• 2016

현대 경제전쟁 시대에서 산업기술의 중요성은 아무리 강조해도 지나침이 없다고 할 수 있다. 산업기술유출은 해당 기업에 막대한 피해를 주는 동시에 자칫 해외로 유출될 경우 국가경쟁력에도 심각한 위협이 될 수 있다. 더욱이 산업기술유출은 일단 유출되면 피해복구와 회수가 매우 어렵다는 점에서 예방차원의 노력과 접근이 요구된다. 하지만 산업기술유출사범의 대부분이 전 현직 직원이라는 점에서 예방은 물론 적발 또한 쉽지 않은 형편이다. 또한 산업기술유출이 명백히 범죄행위이며 화이트칼라 범죄로 인식되고 있음에도 불구하고 산업기술유출을 자기통제이론과 같은 범죄학 관점에서 분석한 연구는 찾아보기 힘든 실정이다. 따라서 본 연구는 기술유출을 저지르는 사람을 막는 것이 가장 중요하다는 판단아래 내부 직원에 의한 기술유출의 범죄학적 요인을 분석하여 산업기술보호의 범죄학적 해결방향에 초점을 맞추었다. 이를 위해 자기통제력 및 조직애착도와 산업기술유출과의 관계를 규명하고자 하였다. 본 연구의 분석결과 내부 직원의 자기통제력과 조직애착도가 높을수록 산업기술유출 가능성이 낮아지는 것으로 나타났다. 이에 따라 화이트칼라 범죄인 산업기술유출을 막기 위해서는 내부 직원의 자기통제력과 조직애착도를 높일 수 있는 방안을 모색하는 것이 가장 중요하다고 할 수 있다. 이처럼 본 연구는 지금까지 연구가 거의 이뤄지지 않았던, 자기통제력 및 조직애착도와 산업기술유출의 관계를 실증적으로 분석함으로서 관련 연구의 활성화에 기여하고자 한다.

• 한국보건간호학회지
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• 제29권1호
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• pp.90-101
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• 2015

Purpose: The purpose of this study was to investigate impact of sexual knowledge and sexual self-efficacy on sexual autonomy in middle school students in a rural area. Methods: With a cross-sectional descriptive design, 236 second-grade students were recruited from 4 middle schools using convenience sampling. The instrument was a self-administered questionnaire on sexual knowledge, sexual self-efficacy, and sexual autonomy. Data were analyzed using 2-sample t-test, one-way ANOVA, Scheffe, Pearson correlation coefficient, and stepwise regression. Results: Results showed significant positive correlations among sexual knowledge, sexual self-efficacy, and sexual autonomy. Sexual self-efficacy and sexual knowledge explained 37% of the variance in sexual autonomy. Conclusion: Findings of this study suggest that it is relevant to address sexual self-efficacy as well as sexual knowledge in order to increase sexual autonomy in middle school students. Further studies are warranted to investigate these variables with a larger sample and for development and validation of interventions to enhance sexual self-efficacy and sexual autonomy in middle school students.

• 지역사회간호학회지
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• 제14권2호
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• pp.232-241
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• 2003

Purpose: To investigate the factors influencing health promoting behavior in college students and to provide a basic data for developing an effective health promotion program. Method: The subjects were 711 college students living in Jecheon city and were selected using a convenience sampling method. The instruments used in this study included the Health Promoting Lifestyle Profile developed by Walker et al.(987). Perceived Health Status developed by Lawston et al. (1982). Self-Esteem scale developed by Rosenberg(1965), Self-Efficacy scale developed by Becker et al. (1993), and Health Locus of Control developed by Wallston et a1.(1978). The data were analyzed by descriptive statistics, pearson correlation coefficient, and stepwise multiple regression using SPSS/WIN program. Results: I) The mean score of health promoting behavior was 2.39 point out of 4. In terms of sub-domains of health promoting behavior, self-actualization(2.78) showed the highest mean score, followed by interpersonal support(2.75), stress management(2.38), nutrition(2.11), exercise(2.04), and health responsibility (1.97). 2) The health promoting behavior had significantly positive correlations with self-efficacy, powerful others health locus of control, internal health locus of control, chance health locus of control, and perceived health status. 3) In the relationship between general characteristics and health promoting behavior, health promoting behavior was significantly different by gender(t=2.17, p=.03), and financial status of parents (F=10.79. p= .00). 4) The most powerful predictor of health promoting behavior was self-efficacy. A combination of self-efficacy, self-esteem, powerful others health locus of control, and sex accounted for 40.4% of the total variance in health promoting behavior. Conclusion: The findings of this study showed that health responsibility and exercise were the domains where the college student showed relatively lower scores than other domains, self-efficacy was the most important predictor of health promoting behavior. Therefore, it is suggested that health promoting programs should focus on health responsibility, and exercise. Nursing strategies that can enhance self-efficacy should also be developed in order to promote healthy lifestyles in college students.

• Asian Pacific Journal of Cancer Prevention
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• 제14권12호
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• pp.7283-7288
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• 2013

Background: Tobacco use among adolescents is a major public health concern, and identifying predictors of smoking is necessary for planning prevention programs. The present study examined the relationship between refusal self efficacy, self esteem, smoking refusal skills and water pipe (hookah) smoking among Iranian male adolescents. Materials and Methods: A cross-sectional study was conducted with 380 Iranian male adolescents aged between 15-19 years selected by multistage sampling. The participants completed an anonymous, voluntary, self-report questionnaire. Variables independently associated with water pipe (WP) smoking were identified by multiple logistic regression analysis. Results: The mean age of the participants was $16.7{\pm}1.3$ years. The prevalence of WP smoking was 17.3%. Logistic regression analysis revealed that knowledge (OR=0.56; 95% CI: (0.37-0.79), attitude (OR=0.69; 95% CI: (0.52-0.89), self esteem (OR=0.67; 95% CI: (0.55-0.82), smoking refusal skills (OR=0.73; 95% CI: (0.55-0.87), and self efficacy (OR=.82; 95% CI: (0.61-0.93) were all signifcant prediting facotrs for adolescents WP smoking. Conclusions: The findings have implications for public health interventions. Indeed, self efficacy and smoking refusal skills should be considered when developing tailored measures for the prevention of WP smoking among adolescents.

• 간호행정학회지
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• 제14권3호
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• pp.287-296
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• 2008

Purpose: This study is descriptive survey to offer basic data of nursing management practice as identify the relationship between Professional Self-Concept, Organizational Commitment and Job satisfaction, whom nurses work general hospitals less than 250 beds. Methods: The subjects in this study were random sampling 320 nurse who worked in 9 general hospital in G city that had less than 250 beds, data was collected from 10 to 30 in Apr, 2007. The data were analyzed using descriptive statistics, Pearson‘s correlation, t-test, ANOVA, Scheffe test. Results: Level of Professional Self-Concept of nurses was average 2.60 point, level of Organizational Commitment of nurses showed 2.83 point, level of Job Satisfaction of nurses showed 2.73 point. There was a statistically significant difference at Professional Self-Concept of nurses as general characteristics showed a marriage state, position, work place, clinical career. There was a statistically significant difference at Organizational Commitment of nurses as general characteristics showed a marriage state, position, clinical career. There was a statistically significant difference at Job Satisfaction of nurse as general characteristics showed a marriage state, position, clinical career. There were highest correlation Organizational Commitment with Job Satisfaction(r=.536, p<.001), also high correlation Organizational Commitment with Professional Self-Concept(r=.478, p<.001). And there were high correlation Job Satisfaction with Professional Self-Concept(r=.422, p<.001). Conclusions: As integrate of the study result showed the Professional Self-Concept had correlation to Organizational Commitment and Job Satisfaction, specially as relation those valuables with general characteristics of subjects, it strongly need to develop educational program for improving Professional Self-Concept with supporting of variety administration for developing human resource for nurses who are not married, low position in hospital, short career, or worked in inpatient wards.

• 한국치위생학회지
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• 제15권4호
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• pp.671-677
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• 2015

Objectives: The purpose of the study was to examine the influencing factors of self-reported dry mouth in the employees in social welfare facilities. Methods: A self-reported questionnaire was completed by 260 employees in social welfare facilities from January 5 to 30, 2015 by convenience sampling method. Except 25 incomplete answers, 215 data were analyzed by t test, one way ANOVA, Pearson's correlation coefficient analysis, and multiple linear regression analysis using SPSS 180. program. The questionnaire consisted of general characteristics of the subjects, health-related characteristics, whole body dryness and self-reported dry mouth. The oral health-related quality of life was measured by five point Likert scale, and a higher score indicated a lower quality of life. Results: The self-reported dry mouth in the employees in the social welfare facilities varied by the general health status, stress, oral health status and oral malodor. The self-reported dry mouth was closely related to the quality of life and the four subfactors including dryness of skin, eye, lip and nasal mucosa. The quality of life had the influence on the self-reported dry mouth, nasal mucosa dryness, eye dryness, and oral malodor in order. Conclusions: The self-reported dry mouth was closely related to whole body dryness and the quality of life. It is necessary to develop the quality of life improvement programs that prevent and manage the dry mouth and whole body dryness in the employees in the social welfare facilities.

• 대한전자공학회논문지SD
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• 제47권3호
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• pp.18-27
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• 2010

본 논문에서는 offset self-calibration 기법을 적용한 7-bit 1GSPS folding-interpolation A/D 변환기를 제안한다. 제안하는 A/D 변환기는 folding rate 2, interpolation rate 8의 1+6 구조로 고속 동작에 적합하게 설계되었다. 또한 offset self-calibration 회로를 설계하여 공정 mismatch, 기생 저항, 기생 캐패시턴스 등에 의한 offset-voltage의 변화를 감소시켜 A/D 변환기의 성능 특성을 향상 시켰다. 제안하는 A/D 변환기는 1.2V 65nm 1-poly 6-metal CMOS 공정을 사용하여 설계 되었으며 유효 칩 면적은 $0.87mm^2$, 1.2V 전원전압에서 약 110mW의 전력소모를 나타내었다. 측정 결과 샘플링 주파수 800MHz, 입력 주파수 250MHz에서 39.1dB의 SNDR 특성을 보여주었으며, offset self-calibration 회로를 사용 하지 않은 A/D 변환기에 비해 SNDR이 약 3 dB 향상되었다.