• 한국학교보건학회지
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• 제32권2호
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• pp.125-134
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• 2019

Purpose: The purpose of this study was to investigate the effects of sedentary behavior on subjective health in Korean adolescents. Methods: This study is designed as a cross-sectional study. The study sample comprised of 60,040 middle and high school students primarily at the age of 12 to 17. Using data from the 14th (2018) Korea Youth Risk Behavior Web-based Survey, multiple logistic regression analysis was conducted. Results: The rate of engaging in sedentary behavior for less than 2 hours was 28.4% and for more than 4 hours was 28.2% in Korean adolescents. In the result from the logistic regression analysis, compared to engaging in sedentary behavior for 2 hours or less, the adjusted odds ratio was 1.15 for over 4 hours, with other factors controlled. Conclusion: It is necessary to actively develop and promote active leisure activities and limit excessive media exposure and supplementary learning for adolescents.

• 한국컴퓨터정보학회논문지
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• 제21권5호
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• pp.193-200
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• 2016

This study was conducted in order to assess the effect of variables influencing Korean baby-boomers' welfare consciousness. For this purpose, data from the $8^{th}$ supplementary survey of the Korea Welfare Panel in 2013 were analyzed. The subjects of analysis were 2,035 people who were born between 1955 and 1965 whose welfare panel data did not have missing values for the variables of the research model. According to the results of analysis, first, when the descriptive statistics of the major variables were analyzed, those showing a relatively high mean score among the sub-factors of the baby-boomers' welfare consciousness were 'expansion of expenditure for public assistance' (mean 3.65, SD .557), 'expansion of expenditure for social insurance' (mean 3.53, SD .646), and 'expansion of expenditure for social services' (mean 3.26, SD .424). The mean score of the baby-boomers' overall welfare consciousness was relatively high as 3.45 (SD .428), advocating the expansion of welfare expenditure. Second, the independent variables influencing the baby-boomers' welfare consciousness was found to have explanatory power of 12.9%. In the results of regression analysis, variables found to have a significant effect were gender (B=.100, t=2.573, p<.01), personal responsibility for poverty (B=-.151, t=-3.635, p<.01), social responsibility for poverty (B=.149, t=3.437, p<.001), and recipient's laziness (B=.251, t=6.578, p<.001). Based on these results were discussed major relevant policies.

• 한국심리학회지 : 문화 및 사회문제
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• 제27권3호
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• pp.325-350
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• 2021

본 연구는 한국대학생의 부모자녀관계와 진로정체감의 관계에서 부모자녀진로합치과정의 매개효과를 살펴보는 것을 목적으로 하였다. 구체적으로, 정서적으로 끈끈한 유대감(부자유친성정)과 권위적 효의식을 지지하는 상호협조적 부모자녀관계와 자녀의 독립성과 자율성을 지지하는 독립적 부모자녀관계가 어떠한 부모자녀진로합치과정을 거칠 때 진로정체감에 긍정적인 영향을 미치는지를 살펴보았다. 이를 위해 4년제 대학생 509명의 자료를 분석하였으며, 병렬다중매개모형분석을 실시하였다. 그 결과, 부자유친성정은 보완합치와 조정합치과정을 완전매개하여 진로정체감으로 이어지는 것으로 드러났다. 권위적 효의식은 진로정체감에는 부정적인 직접 영향을 미치지만 보완합치와 조정합치과정을 매개하면 진로정체감에 긍정적인 영향을 미치는 것으로 드러났다. 자녀의 자율성을 지지하는 부모자녀관계는 보완합치와 조정합치과정을 완전매개하여 진로정체감으로 이어지는 것으로 드러났다. 가족침입성은 진로정체감에 부정적인 직접 효과만을 갖는 것으로 드러났다. 한편 유사합치과정은 상호협조적 부모자녀관계와 독립적 부모자녀관계 모두에서 통계적으로 유의한 매개효과를 갖지 않았으며, 진로정체감과는 부적인 직접효과를 갖는 것으로 드러났다. 이러한 결과를 통해 부모자녀관계와 진로정체감의 관계에 대한 문화보편적 특성과 문화특수적 특성을 논의하였으며, 연구의 한계와 향후 연구방향을 제언하였다.

• 유통과학연구
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• 제14권10호
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• pp.109-116
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• 2016

Purpose - This study investigates the purchase pattern relating to soybean products in Korea. Specifically, the effect of branding based on a regional name was analyzed in terms of consumer purchase frequencies. The primary purpose of this study is to understand why family characteristics affect product selection for a regional brand in the soybean food category. Research design, data, and methodology - We used data collected by the Rural Development Administration (RDA) of Korea. The RDA has monitored agricultural food consumers for years in order to obtain purchase records. Panel participants live in regions near the capital city of Seoul, Korea. Examining data from January 2010 to May 2016, 667 families were selected for analysis. The final data set was 1,335,402. Each purchase item by each individual family was aggregated to a countable weekly observation. To analyze the data set quantitatively, zero-inflation regression was adopted, which was appropriate to avoid biases from overly dispersed observations. Results - We hypothesized the effects of regional branding from the viewpoint of the family characteristics. The first hypothesis was that the number of children would be positively associated with the purchase of a regional brand of soybean products. The result strongly supported this hypothesis. The second hypothesis was that the number of family members would be negatively associated with the purchase of the soybean products of a regional brand. Based on empirical analysis, we concluded that this hypothesis was partially supported. The third hypothesis was the presence of an interaction effect between the number of children and the family size, which was supported by the results. As a supplementary analysis, we also tested mean-variance differences in terms of categories and regional branding with corporate branding. Conclusion - The results of this study provide insights for regional branding strategies in agricultural food management. This study appears to be one of the seminal studies trying to analyze purchase patterns from longitudinal observations. In addition, this study adopted variables characterizing family lifestyle. This study confirmed that children and family size should be considered when soybean product brands are introduced.

• 음성과학
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• 제11권1호
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• pp.105-116
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• 2004

The fundamental frequency of a vowel is known to be affected by the identity of the preceding consonant. The general agreement is that strong consonants trigger higher F0 than weak consonants. However, there has been a disagreement on the shape of this segmentally affected F0 contours. Some studies report that shapes of contours are differentiated based on the consonant type, but others regard this observation as misleading. This research attempts to resolve this controversy by investigating shapes and slopes of F0 contours of Korean word level speech data produced by four male speakers. Instead of entirely relying on traditional human intuition and judgment, I employed an automatic F0 contour analysis technique known as tilt parameterisation (Taylor 2000). After necessary manipulation of an F0 contour of each data token, various parameters are collapsed into a single tilt value which directly indicates the shape of the contour. The result, in terms of statistical inference, shows that it is not viable to conclude that the type of consonant is significantly related to the shape of F0 contour. A supplementary measurement is also made to see if the slope of each contour bears meaningful information. Unlike shapes themselves, slopes are suspected to be practically more practical for consonantal differentiation, although confirmation is required through further refined experiments.

• Child Health Nursing Research
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• 제11권2호
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• pp.211-220
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• 2005

Purposes: The purposes of this study were to examine knowledge related to child abuse, attitudes toward child abuse, and intention to report child abuse and to identify the predictors of nurses' intention to report child abuse. Method: A descriptive-correlational study was conducted. Participants were 171 nurses who worked in the pediatric or emergency rooms in G city. Self-administered questionnaire was used for data collection. Descriptive statistics, t-test or ANOVA, Pearson correlation, and stepwise multiple regression analysis were used for data analysis. Results: Nurses had a limited knowledge related to child abuse. Nurses had negative attitudes toward child discipline, were inclined to punish the abuser, and had positive attitudes about professional responsibility for reporting child abuse. Nurses perceived difficulty in the actual behavior of reporting child abuse. Nurses' intention to report child abuse was predicted by nurses' attitudes to professional responsibility for reporting child abuse. Conclusions: Based on the findings of this study, educational programs need to be developed, implemented, and evaluated. The conclusion of this study is that supplementary education is needed for multidisciplinary decision making concerning the role of the nurses within the context of child abuse. Implications for nursing practice, education and research are discussed.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2008년도 추계 학술논문 발표대회
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• pp.159-165
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• 2008

For deciding the profitability and feasibility of the construction project, the schematic estimation has to not only link the design decision-making but also estimate the cost with reliability. The Object-based schematic estimation system was developed for easily linking with design-making and supports to evaluate the design alternatives in the design development stage but didn't consider the cost estimated by object supplementary and parameter work item. This research presents the Integrated Object-Parameter Schematic Estimation Model in the design development stage that can lead to more accurately estimate the cost through analyzing historical data from the high-storied office buildings. For the development of the proposed model for schematic estimation, after analyzing and classifying the work items from the Bills of Quantities(BOQs) and drawings of historical data, this research proposed the methods of estimating cost in accordance with attributes of each work item using regression analysis. In addition, a case study is performed for the effectiveness as comparing the proposed model with the previous estimating model.

• 한국지구과학회지
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• 제43권5호
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• pp.579-590
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• 2022

본 연구는 데이터 과학의 과정에 따른 파이썬 기반의 외부고리 은하 영상 분석 알고리즘 개발을 목적으로 한다. 잠재적 사용자는 학생과 교사를 포함한 시민 과학자로 정하였다. 은하의 실제 데이터를 이용한 분류 연구는 IRAF 라는 전문 소프트웨어가 이용되고 있어 일반인이 접근하기에 한계가 있다. 이에 IRAF를 사용한 선행 연구의 결과와 비교 검증이 가능한 외부고리 은하를 분석 대상 천체로 정하여, 영상 분석 알고리즘을 개발하고 그 결과를 검증하였다. 검증 결과 총 69개의 외부고리 은하 중 50개(72.5%)가 IRAF 결과와 높은 일치를 보였다. 남은 19개(27.5%)는 시선 방향에 겹친 밝은 별의 존재 혹은 은하 내부의 약한 밝기로 인해 IRAF 결과와 다른 낮은 일치를 보였다. 보완 과정을 거친 최종 결과물은 공유 및 교육 자료의 활용도를 높이기 위해 전체 사용된 데이터와 알고리즘, 파이썬 코드 파일 및 사용 설명서를 GitHub에 탑재하였다.

• 정보교육학회논문지
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• 제25권6호
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• pp.1005-1013
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• 2021

코로나 19가 장기화되면서 기존 학력 격차가 더욱 심화되고 있다. 본 연구의 목적은 담임교사에게 학업 성취도 분석을 통해 학년 및 학급 내 학력 격차 실태를 시각적으로 확인하고, 이를 활용하여 학력 격차를 개선하기 위한 수업 설계 및 방안 탐색에 도움을 주기 위함이다. 학생들의 학년 초 국어, 수학 진단평가 점수 데이터를 K-means 알고리즘을 활용하여 클러스터로 시각화하였으며, 그 결과 유의미한 군집이 형성된 것을 확인했다. 또한, 교사 인터뷰 결과를 통해서 학생의 학습 수준 및 학업 성취 확인, 개별 보충지도 및 수준별 학습과 같은 수업 설계 등 학력 격차 개선에 본 시스템이 유의미한 것으로 확인되었다. 이는 곧, 학업 성취도 데이터 분석 시스템이 학력 격차 개선에 도움이 된다는 것을 의미한다. 본 연구가 담임교사에게 학년 및 학급 내 학력 격차 개선 방안을 탐색하는 데에 실질적인 도움을 제공하며, 궁극적으로 학력 격차 개선에 기여하기를 기대한다.

• 보존과학회지
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• 제37권4호
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• pp.340-356
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• 2021

We have tried the experimental research of lost-wax casting to reconstruct Gilt-Bronze Pensive Bodhisattva; preliminary and reconstruction experiment based on ancient texts. Main object to reconstruct is Korean National Treasure No.83, Gilt-Bronze Pensive Bodhisattva (Maitreya), then we measure alloy ratio and casting method based on the scientific analysis. Other impurities were removed from the base metal components(copper : tin : lead) and their ratio was set to 95.5 : 6.5 : 3 where the ratios for tin and lead were increased by 2.5% each. The piece-mold casting method was used, and piece-mold casting experiments were carried out twice in this study but supplementary research on piece-mold casting was necessary. The microstructure was confirmed to be typical cast microstructure and the component analysis result was similar to that of the prior study. Analysis of the chemical composition is confirmed to copper, tin, lead, and zinc, and the chemical composition of the matrix was 87.8%Cu-7.5%Sn-2.7%Pb-2.1%Zn, and similar to previous experimental research. Also resulted in the detection of small impurity in Zn. Analysis of the mould revealed that the mould was fabricated by adding quartz and organic matter for structural stability, fire resistance, and air permeability. We expect that our research will contribute to provide base data for advanced researches in future.