• Structural Engineering and Mechanics
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• 제81권2호
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• pp.205-217
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• 2022

The thermodynamic properties of shaft lining concrete (SLC) are important evidence for the design and construction, and the spatial variability of concrete materials can directly affect the stochastic thermal analysis of the concrete structures. In this work, an array of field experiments of the concrete materials are carried out, and the statistical characteristics of thermophysical parameters of SLC are obtained. The coefficient of variation (COV) and scale of fluctuation (SOF) of uncertain thermophysical parameters are estimated. A three-dimensional (3-D) stochastic thermal model of concrete materials with heat conduction and hydration heat is proposed, and the uncertain thermodynamic properties of SLC are computed by the self-compiled program. Model validation with the experimental and numerical temperatures is also presented. According to the relationship between autocorrelation functions distance (ACD) and SOF for the five theoretical autocorrelation functions (ACFs), the effects of the ACF, COV and ACD of concrete materials on the uncertain thermodynamic properties of SLC are analyzed. The results show that the spatial variability of concrete materials is subsistent. The average temperatures and standard deviation (SD) of inner SLC are the lowest while the outer SLC is the highest. The effects of five 3-D ACFs of concrete materials on uncertain thermodynamic properties of SLC are insignificant. The larger the COV of concrete materials is, the larger the SD of SLC will be. On the contrary, the longer the ACD of concrete materials is, the smaller the SD of SLC will be. The SD of temperature of SLC increases first and then decreases. This study can provide a reliable reference for the thermodynamic properties of SLC considering spatial variability of concrete materials.

• Safety and Health at Work
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• 제13권4호
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• pp.415-420
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• 2022

Background: Healthcare workers perform an emotionally exhausting daily work activity, making them prone to occupational hazards, namely psychosocial ones. This study aims to assess the impact of psychosocial risk factors on healthcare workers' mental health. Methods: A cross-sectional study was developed between May and June of 2021 with 479 healthcare workers from Portuguese hospitals. The Depression, Anxiety and Stress Scale was used to assess mental health, and psychosocial risks were assessed through the Health and Work Survey - INSAT. Statistical analysis was performed to identify the psychosocial risk factors related to anxiety, depression, and stress. Subsequently, a multiple linear regression was performed to identify the models that better explained psychosocial risk factors' relationship with anxiety, depression, and stress. Results: Data showed a strong exposure to psychosocial risks. Work pace and intensity, work relationships, and emotional demands stood out with higher global average percentages for yes answers to "exposure and discomfort." The analysis of the b values and p-values from the multiple linear regression shows that some cross-sectional psychosocial risks are predictors of anxiety and stress dimensions, and other psychosocial risks differ in the two mental health dimensions. However, it is important to highlight that healthcare workers still showed great joy and pleasure in performing their work activities. Conclusion: Support network development in the work environment is needed to prevent healthcare workers' emotional stress and promote their psychological well-being. Therefore, new research is essential to understand the psychosocial risks that affect healthcare workers and assess the less visible effects of work-health relationships.

• 치위생과학회지
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• 제22권1호
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• pp.44-50
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• 2022

Background: This study compares and analyzes the degree of oral health information literacy by 25% for upper and lower grades to assess how differences in mothers' oral health information literacy affect infants' oral health behavior. Methods: The study surveyed 201 mothers with infants and children using a 36 question survey tool. Cross-analysis was conducted to determine the difference in oral health information literacy between the upper and the lower 25%. Results: Comparing 25% of the upper and lower grades of verbal oral health information literacy scores, the word with the most significant difference in the correct answer was resin. An item asking about the time to eat after fluoride varnish application showed the most significant difference in the correct answer on the functional oral health information literacy scale. Mothers' oral and functional oral health information literacy scores showed that verbal literacy was statistically significant for brushing guidance after children's meals, brushing guidance before children's bedtime, food intake restrictions before bedtime, and restrictions on consumption of cavity-inducing foods (p<0.05). Functional literacy was statistically significant in the post-brushing test of children and the correct brushing method map items (p<0.05). Conclusion: As a result of comparing and analyzing the upper and lower 25% of the mother's oral health information literacy, it was found that the mother's oral health information literacy affected the infant's oral health behavior. Therefore, systematic education is needed to raise literacy by grasping the level of oral health information literacy of mothers, and oral health education by level according to oral health information literacy should be developed.

• 웰빙융합연구
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• 제5권4호
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• pp.19-31
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• 2022

Purpose: This study was conducted to identify indoor air quality in various living spaces using sensors that can measure noise, vibration, fine dust, and odor in real time and to propose optimal indoor air quality maintenance management using Internet of Things(IoT). Research design, data and methodology: Using real-time sensors to monitor physical factors and environmental air pollutants that affect the comfort of the residential environment, Noise, Vibration, Atmospheric Pressure, Blue Light, Formaldehyde, Hydrogen Sulfide, Illumination, Temperature, Ozone, PM10, Aldehyde, Amine, LVOCs and TVOCs were measured. It were measured every 1 seconds from 4 offices and 4 stores on a small scale from November 2018 to January 2019. Results: The difference between illuminance and blue light for each measuring point was found to depend on lighting time, and the ratio of blue light in total illumination was 0.358 ~ 0.393. Formaldehyde and hydrogen sulphide were found to be higher than those that temporarily attract people in an indoor office space that is constantly active, requiring office air ventilation. The noise was found to be 50dB higher than the office WHO recommendation noise level of 35 ~ 40dB. The most important factors for indoor environmental quality were temperature> humidity> illumination> blue light in turn. Conclusions: Various factors that determine the comfort of indoor living space can be measured with real-time sensors. Further, it is judged that the use of IoT can help maintain indoor air quality comfortably.

• Journal of Korea Trade
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• 제27권2호
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• pp.47-60
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• 2023

Purpose - This paper assesses the trade potential and efficiency of Korea and China in the aquatic products trade. Trade efficiency and potential are the main factors that affect the growth of a country's trade. In this study, a time-varying stochastic frontier trade gravity model was constructed to analyze the trade potential and efficiency between Korea and China. By integrating the results of trade theory and empirical analysis, measures and suggestions were proposed to encourage the release of trade potential of fish exports between Korea and China. Design/methodology - In this paper, GDP per capita instead of economic size was chosen as an explanatory variable, and population size and relative distance were selected as explanatory variables to measure trade potential. For trade non-efficiency terms, regional organizations, political factors, and economic factors were mainly considered, and variables such as free trade agreements, political stability, regulatory quality, government efficiency, currency freedom, investment freedom, financial freedom, and trade freedom were selected. Panel data for South Korea and 14 aquatic products trading partners (including China) from 2002 to 2020 were used in the empirical analysis. Findings - In the past 19 years, South Korea's export trade potential of aquatic products to China has never been lower than 70%. It was above 90% from 2006 to 2018, and has been at a high level for a long time. This shows that China's aquatic product market has large potential for development. Originality/value - This study examines the effectiveness and potential of South Korea's exports of aquatic items to China in a methodical and comprehensive empirical manner. The evaluation of the export trade potential of South Korea's aquatic goods to China is more precise when the effects of regional organization, political, and economic variables are taken into account in the trade non-efficiency term of the stochastic frontier gravity model. At the same time, we propose to increase the scale of South Korea's aquatic products trade from the perspective of China's demand. This issue of trade studies is underexplored both empirically and in theory, although the issue has long been important to Korean and world trade.

• 융합정보논문지
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• 제12권2호
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• pp.54-62
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• 2022

본 연구는 융합실습을 경험한 간호대학생의 핵심간호역량의 영향을 규명하는 것을 목적으로 하였고, U 광역시 소재 간호대학생 123명을 대상으로 하였다. SPSS 22.0 프로그램으로 t-검정, ANOVA, 상관관계 및 다중회귀분석을 하였다. 연구결과 핵심간호역량, 자기주도학습능력, 학습만족도, 학습성과의 평균점수는 5점 만점에 3.99점, 3.71점, 4.11점, 4.25점이었다. 간호대학생들의 핵심간호역량에 영향을 미치는 요인은 자기주도적 학습능력과 학습성과였으며 핵심간호역량을 설명하는 설명력은 29%이었다. 학습만족도는 핵심간호역량에 영향을 미치지 않은 것으로 나타났다. 본 연구결과 통해 임상실습현장에서 볼 수 있는 다양한 간호행위를 관찰하거나 시행할 수 있는 아닌 한계점을 개선하기 위해서는 양질의 교육환경 및 프로그램 개발이 마련되어야 함을 알 수 있었다. 교육환경 및 임상실습 평가에 대한 명확하고 체계적인 기준이 필요하고 실습이 다양해짐에 따라 임상실습에 대한 체계적인 표준안이 마련되어야 할 것을 제언한다.

• 인간식물환경학회지
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• 제22권1호
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• pp.15-29
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• 2019

The purpose of this study is to investigate the effects of the exhibition displays and events of the Agro-healing Experience Hall in the Agricultural Technology Exhibition 2018 on satisfaction and revisit intention of visitors. A survey was conducted on visitors of the Agro-healing Experience Hall and the responses of 274 visitors excluding 26 cases with inappropriate responses were analyzed. For psychological measurement, the Perceived Restorativeness Scale (PRS), Profile of Mood States (POMS), level of plant gardening experience, satisfaction and loyalty were measured. There was a significant difference among age groups in all four factors of the PRS (repose, fascination, coherence, and legibility). In the case of education level, there was a significant difference in the three factors (repose, fascination, and legibility). In addition, average monthly income showed a significant difference among groups in the two factors (fascination and coherence). As a result of analyzing the mood states of visitors for the exhibition events of the Agro-healing Experience Hall, there was a significant difference among age groups only in the case of vigor (p < .05). As a result of analyzing the correlation between the level of plant gardening activities (3 factors) and PRS (4 factors) in the exhibition events of the Agro-healing Experience Hall, plant preference tendency and plant-related event showed a high positive correlation of 0.5 or more with repose of the PRS factors. A multiple regression analysis was conducted to investigate the effects of the level of plant gardening activities, PRS and POMS on the satisfaction and loyalty of visitors. As a result, it was found that in terms of relative explanatory power over independent variables affecting satisfaction and revisit intention, fascination had the greatest effect, followed by vigor, fatigue, and occupation (company employee). The results of this study suggest that exhibition events of the Agro-healing Experience Hall affect repose, fascination or vigor of visitors, and thus can be used positively to increase satisfaction and revisit intention of visitors.

• 한국심리학회지:여성
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• 제15권3호
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• pp.447-468
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• 2010

본 연구에서는 남녀 대학생들의 자기애 성향, 공격성과 정신병질 간의 관계를 알아보고 자기애 성향이 공격성을 매개로 정신병질에 영향을 미치는지 밝히고자 하였다. 이를 위해 경기도 지역의 대학생 남자 451명과 여자 413명(총 864명)을 대상으로 자기애 성격 척도, 정신병질 척도와 공격성 척도를 실시하고 변인들 간의 관계를 분석하였다. 척도별 평균 비교와 상관분석 결과, 대학생들의 자기애 성격척도의 하위요인과 정신병질, 공격성 점수와 변인들간의 관계가 성차에 따라 다른 양상을 보였다. 자기애 성향의 하위요인들과 정신병질과의 관계에서 공격성이 가지는 매개효과를 분석한 결과, 남녀 집단 모두에서 자기애 성향의 하위요인인 과시욕과 특권의식이 정신병질 성향에 미치는 영향을 공격성이 부분 매개하는 것으로 나타났다. 공격성의 매개효과가 자기애 하위요인들 중에서 과시욕, 특권의식 요인과 정신병질 경향의 관계에서 유의하였다는 결과를 성차와 연관 지어 논의하고 추후 연구 방향에 대해 제언하였다.

• 대한불안의학회지
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• 제18권2호
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• pp.109-115
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• 2022

Objective : The purpose of this study was to examine the influence of subscales of emotional intelligence on empathy in first-year medical students. Methods : A total of 215 first-year medical students were eligible for this study. Demographic factors (age, sex, and medical school entrance type) and measures for emotional intelligence and empathy, such as the Wong and Law Emotional Intelligence Scale and the Interpersonal Reactivity Index, were included in the survey. The relationship between emotional intelligence and empathy was analyzed by multiple linear regression, adjusting for age, sex, and entrance type. Results : The female students' level of emotional intelligence was higher than the male students for the self-emotional appraisal (p=0.029) and others' emotional appraisal (p=0.006) subscales. Meanwhile, the graduate-entry students scored higher for the use of emotion (p<0.001) and regulation of emotion (p=0.010) subscales than the direct-entry students. For empathy, the female students revealed a higher score in empathic concern (p=0.009) than the male students, and graduate-entry students scored higher than the direct-entry students in perspective taking (p=0.004) and empathic concern (p<0.001). The multiple linear regression analysis has identified significant influences of subscales of emotional intelligence on empathy: others' emotional appraisal on perspective taking (p<0.001), self-emotional appraisal (p=0.035) and regulation of emotion (p=0.023) on fantasy, others' emotional appraisal (p<0.001) and use of emotion (p=0.020) on empathic concern, and self-emotional appraisal (p=0.033) and regulation of emotion (p<0.001) on personal distress. Conclusion : This study's findings suggest that emotional intelligence may affect empathy in medical students, which can have implications for developing educational strategies to enhance empathetic attitudes in medical students.

• 대한한의진단학회지
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• 제25권1호
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• pp.88-100
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• 2021

Objectives The purpose of this study was to examine the daily lifestyle of Vietnamese immigrant women and to find out if they could affect health-related quality of life improvement. Methods The subjects of this study were 273 women who immigrated to Korea from Vietnam. This study was conducted at Daejeon and nearby Healthy Family Support Centers from September 2019 to January 2020 with the cooperation of the Daejeon City Healthy Family Support Center. Correlation analysis was performed between lifestyle and quality of life, and ANOVA analysis was performed to confirm the difference in health-related quality of life scores for each subgroup of dietary nutrition, sleep quality, and physical activity. A regression analysis was conducted to investigate the contribution of dietary nutrition, sleep quality, and physical activity to the quality of life of Vietnamese immigrant women. The significance level was p<0.05. Results Physical activity showed significant correlations with Euro Quality of Life -Visual Analogue Scale (EQ VAS), sleep quality with EQ VAS and Euro Quality of Life-5Dimension (EQ-5D) Index, and dietary nutrition with EQ-5D Index. There were significant differences in EQ VAS and EQ-5D Index scores for each sleep quality subgroup, and a significant difference in EQ VAS scores for each activity subgroup. The quality of sleep was found to have the greatest effect on EQ VAS and EQ Index of Vietnamese immigrant women, and physical activity on EQ VAS and dietary nutrition had some influence on EQ-5D Index. Conclusions Quality of sleep is closely related to health-related quality of life, and plays an important role in health-related quality of life for Vietnamese immigrant women.