• 한국생물정보학회:학술대회논문집
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• 한국생물정보시스템생물학회 2004년도 The 3rd Annual Conference for The Korean Society for Bioinformatics Association of Asian Societies for Bioinformatics 2004 Symposium
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• pp.265-271
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• 2004

The interaction network of protein -protein plays an important role to understand the various biological functions of cells. Currently, the high -throughput experimental techniques (two -dimensional gel electrophoresis, mass spectroscopy, yeast two -hybrid assay) provide us with the vast amount of data for protein-protein interaction at the proteome scale. In order to recognize the role of each protein in their network, the efficient bioinformatical and computational analysis methods are required. We propose a systematic and mathematical method which can analyze the protein -protein interaction network rigorously and enable us to capture the biological and physical essence of a topological character and stability of protein -protein network, and sensitivity of each protein along the biological pathway of their network. We set up a Laplacian matrix of spectral graph theory based on the protein-protein network of yeast proteome, and perform an eigenvalue analysis and apply a perturbation method on a Laplacian matrix, which result in recognizing the center of protein cluster, the identity of hub proteins around it and their relative sensitivities. Identifying the topology of protein -protein network via a Laplacian matrix, we can recognize the important relation between the biological pathway of yeast proteome and the formalism of master equation. The results of our systematic and mathematical analysis agree well with the experimental findings of yeast proteome. The biological function and meaning of each protein cluster can be explained easily. Our rigorous analysis method is robust for understanding various kinds of networks whether they are biological, social, economical...etc

• 대한토목학회논문집
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• 제33권4호
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• pp.1509-1521
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• 2013

구조물의 안정성에 대한 사회적 요구는 이를 충족시키기 위한 기술발전으로 이어지게 되었고, 지각구조를 이해하기 위해 개발된 탄성파기법도 구조물의 건전성을 평가하는 비파괴 기법으로 자리매김하게 되었다. 비파괴 탄성파기법의 핵심은 측정대상 매질의 탄성파 속도를 측정하는 것으로, 탄성파의 전파를 측정하는 센서를 필수적으로 사용하여야 한다. 기존의 탄성파기법은 접촉식 센서를 사용하기 때문에 이동중 연속시험이 불가능한 문제점이 있었고, 탄성파 시험의 효율성이 실용적 요구조건에 부합하지 못하는 한계성이 있었다. 본 연구에서는 비접촉식 센서의 일종인 보급형 마이크로폰을 센서로 활용하여 기존 탄성파 시험의 문제점을 극복하고자 하는 연구를 수행하였다. 다짐지반의 실시간 다짐품질 확인, 콘크리트 구조물의 재료강성 및 내부결함의 확인 등을 위한 표면파 시험과 공진시험 등을 마이크로폰 활용대상으로 설정하였고, 마이크로폰센서의 영향인자 연구, 실구조물에 대한 현장시험 등을 수행하였다. 이를 통하여 마이크로폰 센서의 신뢰성과 효율성을 확인할 수 있었으며, 최적의 마이크로폰 활용방안을 제안하였다.

• 한국터널지하공간학회 논문집
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• 제10권1호
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• pp.17-24
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• 2008

국내에서 대부분 시공되어지고 있는 현장타설 콘크리트 라이닝은 여러 가지가 문제점을 나타내고 있다. 그 중에 특히 라이닝의 균열 발생은 사회적 및 경제적인 문제로까지 제기되고 있으며 라이닝의 미관뿐만 아니라 안정성에도 영향을 미치게 되므로 막대한 보수보강 공사비의 지출을 유발해 국가 예산을 소모시키고 있다. 국내 콘크리트 2차 제품 생산업체의 생산기술은 아직 선진국 수준에 미치지 못하며, 고품질 제품 생산에 있어 가장 중요한 증기양생 방법 또한 규정되어 있지 않은 실정이다. 본 연구에서는 터널용 PC 패널의 증기양생조건 중 전양생시간, 온도상승구배를 달리하여 물리적 특성을 검토하였다. 시험결과, 고강도 PC패널의 전양생시간은 최소 1시간 이상이 바람직하였으며 온도상승구배는 최대 $20^{\circ}C$가 물리 역학적으로 가장 우수한 성능을 나타내었다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권7호
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• pp.4415-4419
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• 2013

Background: Measuring effects of cancer on family caregivers is important to develop methods which can improve their quality of life (QOL). Nevertheless, up to now, only a few tools have been developed to be used in this group. Among those, the Caregiver Quality of Life Index-Cancer Scale (CQOLC) has met minimum psychometric criteria in different populations in spite of conflicting results. The present study was conducted to evaluate reliability and validity of CQOLC among Turkish cancer family caregivers. Materials and Methods: The CQOLC was administered to 120 caregivers, along with Beck Depression Inventory (BDI), Medical Outcomes Study MOS 36- Item Short Form Health Survey (SF-36), State-Trait Anxiety Inventory (STAI), and Multidimensional Scale of Perceived Social Support (MSPSS). Internal consistency and test-retest stability were used to investigate reliability. Construct validity was examined by using known group method, convergent, and divergent validity. For the known group method, we hypothesized that CQOLC scores would differ between depressed and non-depressed subjects. We investigated convergent validity by correlating scores for CQOLC with scores for other similar measures including SF-36 and STAI. The MSPSS was completed at the same time as CQOLC to provide divergent validity. Results: The values for internal consistency and test-retest correlation were 0.88 and 0.96, respectively. The CQOLC discriminated those who were depressed from those who were not. Convergent validity supported strong correlations between CQOLC scores and two main component scores (PCS, MCS) in SF-36 although there was a weak correlation between CQOLC and STAI scores. Regarding divergent validity, the correlation between CQOLC and MSPSS was in the low range, as expected. Conclusions: The Turkish CQOLC is a reliable and valid tool and it can be utilized to determine QOL of family caregivers.

• 문화기술의 융합
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• 제6권3호
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• pp.75-82
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• 2020

본 연구는 코로나 19상황에서 대학신입생들의 자아탄력성 정도에 따른 우울감과 심리적 정서 차이를 파악하기 위해 시도되었다. 2020년 4월 6일부터 13일까지 온라인을 통해 설문조사를 실시하였으며, 불충분한 설문을 제외하고 총 220부의 설문자료를 활용하여 결과를 분석하였다. 분석결과, 자아탄력성이 평균미만인 경우가 평균이상인 경우에 비해 신입생들의 우울감 뿐 아니라 코로나 19로 인한 심리적 정서인 불안, 초조, 답답함, 무기력, 분노, 두려움, 혼란, 불신 등 모든 정서에 있어서 통계적으로 유의미하게 더 높은 것을 알 수 있었다. 이러한 결과를 바탕으로 재학생들의 심리적 안정과 정신적 건강을 회복하고 유지할 수 있도록 돕기 위한 대학의 역할과 대처 방안을 몇 가지 제안하였다.

• 대한안전경영과학회지
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• 제16권1호
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• pp.119-127
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• 2014

This study tried to develop a basis for quantitative index of working postures associated with WMSDs (Work-related Musculoskeletal Disorders) that could overcome realistic restriction during application of typical checklists for WMSDs evaluation. The baseline data(for a total of 603 jbs) for this study was obtained from automobile manufacturing company. Specifically, data for back posture was analyzed in this study to have a better and more objective method in terms of job relevance than typical methods such as OWAS, RULA, and REBA. Major statistical tools were clustering, logistic regression and so on. The main results in this study could be summarized as follows; 1) The relationship between working posture and WMSDs symptom at back was statistically significant based on the results from logistic regression, 2) Based on clustering analysis, three levels for WMSDs risk at back were produced for flexion as follows: low risk(< $18.5^{\circ}$), medium risk($18.5^{\circ}{\sim}36.0^{\circ}$), high risk(> $36.0^{\circ}$), 3) The sensitivities on risk levels of back flexion was 93.8% while the specificities on risk levels of back flexion was 99.1%. The results showed that the data associated with back postures in this study could provide a good basis for job evaluation of WMSDs at back. Specifically, this evaluation methodology was different from the methods usually used at WMSDs study since it tried to be based on direct job relevance from real working situation. Further evaluation for other body parts as well as back would provide more stability and reliability in WMSDs evaluation study.

• 한국주거학회논문집
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• 제28권1호
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• pp.27-36
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• 2017

The number of one-person households has increased because of social and economic changes in Korea. The purpose of this study is to figure out the need for different types of furniture plans, based on life styles, that minimize undesired dead spaces for those individuals who live by themselves in a one-room studio. Residents of Busan, who are in their 20 to 40 s, answered questionnaires provided by the researchers. 156 questionnaires were analyzed through a statistical process by using SPSS Win 18.0K. The major findings are as follows: (1) The subject's lifestyles were classified into five lifestyle factors: the self-actualizing lifestyle factor, the well-being pursuing lifestyle factor, the open and sociable lifestyle factor, the stable and convenient lifestyle factor, and the information-oriented lifestyle factor. (2) These factors contributed to five lifestyle groups with common characteristic: the 'self-actualizing group' has a positive attitude about self-improvement and most subjects in this group are professionals. The 'well-being pursuing group' has a positive attitude about comfort living. The 'open and sociable lifestyle group' mostly consisted of students who are very positive in regards to accepting new trends. The 'stable and convenient lifestyle group' values stability and convenience in their life. The 'information-oriented group' pursues a lifestyle substantially depending on obtaining online and off-line information.

• 한국직업건강간호학회지
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• 제10권2호
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• pp.131-141
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• 2001

Purpose: This study were carried out to investigate the difference employment characteristics and job satisfactions by gender and to explore the influences of demographic status and employment characteristics on job satisfaction. Method: Social statistics survey data collected by Ministry of Statistics in 1998 were used for the secondary analysis in the study. Job satisfaction was measured by questionnaire which were consisted in 12 items such as task, promotion, placement, wage, benefits, future in the work, working environment, human relationship, working hours. Result: The results show that more than 50% of women were working as a part-time employees. Their education level were lower than men. Women workers were unmarried at higher percents than men. Men were showed more satisfaction significantly in their job than women. Men also had higher job satisfaction with work task, promotion, placement, and human relation. Women had shown higher job satisfaction with wage, working environment, and employer-employee relationship. Employment status had the most important factor on the job satisfaction. And, living status satisfaction, education, age, occupation, marital status, employment status and sex were significant for the job satisfaction. 33.34% of the variance in the job satisfaction were accounted for by these variables. Conclusion: The results of this study showed that there were difference of job satisfaction between gender and employment status was the most predictive factors on the job satisfaction. Women had more unstable employment status such as part-time, employment on probation, or family employer without wage than men. Stability of employment could be considered as a strategy for enhancing job satisfaction for women.

• 한국의류산업학회지
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• 제8권6호
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• pp.639-646
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• 2006

The purpose of this study is to examine clothing benefits seeking and buying behavior depending on the level of environmental awareness. The results showed a significant relationship between the level of environmental awareness and the factors of demographic characteristics, such as age, marital status, educational status, and type of housing, occupation, and average household income. However, there was no significant difference between those by gender. In relationship between the level of environmental awareness and clothing benefits seeking behavior, there were significant differences between the following groups. such as social stability-oriented, brand-oriented, individuality-oriented, and comfort-oriented group. With regard to the relationship between environment-friendly consuming behavior and demographic characteristics, there were significant differences in all factors of the demographic characteristics. Buying behavior showed a significant relationship with all factors of demographic characteristics except type of housing. Using behavior matched a significant relationship with all factors of demographic characteristics. Disposition behavior demonstrated a significant relationship with all factors except marital status. In terms of the effect of clothing benefits sought on the environment-friendly consuming behavior, the results suggested a significant relationship of brand-oriented, individuality-oriented, comfort-oriented, and price-oriented factors. Buying behavior showed a significant relationship with brand-oriented, comfort-oriented, and price-oriented factors. Using behavior demonstrated a strongly significant relationship with comfort-oriented factor while disposition behavior suggested a strong relationship with price-oriented factor.

• 한국산학기술학회논문지
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• 제16권10호
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• pp.6779-6787
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• 2015

이 연구의 목적은 예비보육교사들의 교직윤리의식이 교사효능감과 전문성인식에 영향을 미치는 요인은 무엇인지를 알아보고자 하였다. 이러한 연구목적으로 A시에 소재한 예비보육교사 285명을 대상으로 질문지를 사용하여 실시하였다. 연구결과는 첫째, 예비보육교사들이 지각한 교직윤리의식은 영유아에 대한 윤리가, 교사효능감에서는 교수전략이, 전문성인식은 사회봉사와 직업윤리가 가장 높게 인식하는 것으로 나타났다. 둘째, 예비보육교사들의 교직윤리의식, 교사효능감, 전문성인식에서 통계적으로 유의미한 상관관계가 있는 것으로 나타났다. 셋째, 예비유아교사들의 교직윤리의식이 교사효능감과 전문성인식에 긍정적인 영향을 미치는 것으로 나타났다. 본 연구결과로 볼 때, 예비보육교사의 교직윤리의식의 중요성을 인식하고 질 높은 보육서비스 향상을 위하여 교사효능감과 전문성인식이 형성될 수 있도록 체계적인 보육교사 교육의 내실화를 마련하는데 다양한 연구가 진행되어야 할 것으로 사료된다.