• Title/Summary/Keyword: partial correlation analysis

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The Relationship among Adolescents' Environmental Experience, Environmental Consciousness and Pro-environmental Consumption Behavior (청소년의 환경체험활동경험, 환경의식 그리고 환경친화적 소비행동의 관계)

  • Jung, Joo Won;Cho, So Yeon
    • Journal of Environmental Science International
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    • v.24 no.3
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    • pp.329-337
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    • 2015
  • The purpose of this study was to observe the influence adolescents' environmental experience and environmental consciousness have on the pro-environmental consumption behavior. Also by examining the variable relation, the study scoped out the effectiveness of environmental experience. For the analysis, high school students in Korea were gathered from online and the correlation analysis, multiple regression analysis, and Baron and Kenny mediation analysis were conducted among a total of 521 surveys. The main findings are as follows: First, adolescents' environmental experience, environmental consciousness and pro-environmental consumption behavior showed a positive relationship. In other words, the more the experience, the more sense of responsibility adolescents had towards the environment and society, leading them to have pro-environmental consumption behavior. Second, environmental experience and environmental consciousness were proven to be essential factors that have influence on the adolescents' pro-environmental consumption behavior. Third, partial mediating effect of environmental consciousness was verified in accordance with the relationship between environmental experience and pro-environmental consumption behaviour. The findings suggest the importance of adolescents' environmental consciousness and improvement of pro-environmental consumption behavior by having students gain environmental experience.

Improvement in the DNBR Modeling of RETRAN for Safety Analyses of Westinghouse Nuclear Power Plants

  • Cheong, Ae-Ju;Kim, Yo-Han
    • Nuclear Engineering and Technology
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    • v.34 no.6
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    • pp.596-609
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    • 2002
  • Korea Electric Power Research Institute has developed the in-house safety analysis methodologies for non-LOCA(Loss Of Coolant Accident) events based on codes and methodologies of vendors and Electric Power Research Institute . According to the new methodologies, analyses of system responses and calculation of DNBR(Departure from Nucleate Boiling Ratio) during the transient have been carried out with RETRAN code and a sub-channel analysis code, respectively. However, it takes too much time to calculate DNBR for each case using the two codes to search for the limiting case from sensitivity study. To simplify the search for the limiting case, accordingly, RETRAN code has been modified to roughly calculate DNBR using hot channel modeling. The W-3 correlation is already included in RETRAN as one of the auxiliary DNBR models. However, WRB-1 and WRB-2 correlations required to analyze some Westinghouse type fuels are not considered in RETRAN DNBR models. In this paper, the RETRAN DNBR models using the correlations have been developed and the partial and complete loss of forced reactor coolant flow events have been analyzed for Yonggwang units 1 and 2 with the new methodologies to validate the models. The results of the analyses have been compared with those mentioned in the chapter 15 of the Final Safety Analysis Report.

The Effect of Female Adolescents' Rejection Sensitivity, Impulsivity and Guilt on Binge Eating Behavior (여자 청소년의 거절민감성, 충동성 및 죄책감이 폭식행동에 미치는 영향)

  • Yoon, Chae Rim;Shin, Joo Young;Kim, Jung Min
    • Journal of Families and Better Life
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    • v.32 no.3
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    • pp.31-44
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    • 2014
  • The purpose of this study is to examine the effect of female adolescents' rejection sensitivity, impulsivity and guilt on their binge eating behavior. Questionnaires on rejection sensitivity, impulsivity, guilt and binge eating behavior were administered to 607 female adolescents in Changwon and Ulsan. Of 572 collected copies, 402 were deemed valid and statistically analyzed through frequency analysis, mean and standard deviation, t-test, Pearson's correlation analysis, multiple regression analysis and stepwise multiple regression analysis using SPSS Win 12.0. The results of the study were as follows: 1) School type was found to make a significant difference in rejection sensitivity, overall impulsivity, guilt and binge eating behavior; however, its influence was not significant on the sub-factors of impulsivity: motor impulsivity, unplanned impulsivity and cognitive impulsivity. 2) For female middle school students, rejection anger sensitivity, rejection depression sensitivity and motor impulsivity were found to have a significant influence on binge eating behavior for both middle school and high school girls. Guilt, however, was found to be influential for female high school students only. 3) Impulsivity was found to have a partial mediating effect on the relationship between female adolescents' rejection sensitivity and binge eating behavior.

The Effects of Absorptive Capability and Innovative Culture on Innovation Performance: Evidence from Chinese High-Tech Firms

  • LIU, Si-Meng;HU, Rui;KANG, Tae-Won
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.3
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    • pp.1153-1162
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    • 2021
  • The innovation of enterprises allowed firms to promote technological innovation as an important choice to improve sustainable competitiveness. This study aims to investigate the relationship between absorptive capacity and innovation performance of Chinese high-tech enterprises and focuses on the mediating role of innovation culture in high-tech enterprises. Data came from surveying high-tech enterprises in China, and the reliability analysis, factor analysis, and correlation analysis, path analysis (SEM) were analyzed using SPSS23, AMOS. The results show that intellectual capital composed of human capital, structural capital, and relational has a significant impact on acquisition performance; intellectual capital is composed of human capital; structural capital has a significant influence on innovation performance; and absorptive capital has a significant impact on innovation performance. In addition, innovative culture plays a partial mediating role between absorptive capacity and innovation performance. The findings of this study suggest that, to ensure the better absorption and operation of knowledge, high-tech enterprises can accumulate more knowledge, promote the transformation of knowledge into technology, and strengthen the capability of knowledge absorptive capacity, and at the same time, create an innovation culture atmosphere and encourage employees to develop new products to achieve enterprise goals in order to promote the improvement of innovation performance.

The effect of achievement motivation on learning agility of nursing students: The mediating effect of self-leadership (간호대학생의 성취동기가 학습민첩성에 미치는 영향: 셀프리더십의 매개효과)

  • Yim, Kyun-Hee;Lee, Insook
    • The Journal of Korean Academic Society of Nursing Education
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    • v.27 no.1
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    • pp.80-90
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    • 2021
  • Purpose: This study aimed to investigate nursing students' learning agility and confirm the mediating effect of self-leadership in the relationship between achievement motivation and learning agility. Methods: The study design was a descriptive survey design. The subjects were third- and fourth-year nursing students attending three universities in one region. Data were collected from November 28, 2019, to May 25, 2020, and a total of 202 data were collected using the scale of achievement motivation, self-leadership, and learning agility. Data analysis included frequency analysis, descriptive statistics, and Pearson's correlation coefficient using SPSS 25.0 statistics 25.0 software. The mediating effect of self-leadership was analyzed through regression analysis and bootstrapping using process macro ver. 3.4.1. Results: Self-leadership's partial mediating effect was confirmed in achievement motivation and learning agility. Achievement motivation was found to affect directly learning agility, with an indirect effect through self-leadership. Conclusion: The study results showed that nursing students could increase their learning agility through self-leadership improvement. Future research should focus on identifying the factors influencing nursing students' learning agility and develop and apply programs to improve learning agility.

Numerical data-driven machine learning model to predict the strength reduction of fire damaged RC columns

  • HyunKyoung Kim;Hyo-Gyoung Kwak;Ju-Young Hwang
    • Computers and Concrete
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    • v.32 no.6
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    • pp.625-637
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    • 2023
  • The application of ML approaches in determining the resisting capacity of fire damaged RC columns is introduced in this paper, on the basis of analysis data driven ML modeling. Considering the characteristics of the structural behavior of fire damaged RC columns, the representative five approaches of Kernel SVM, ANN, RF, XGB and LGBM are adopted and applied. Additional partial monotonic constraints are adopted in modelling, to ensure the monotone decrease of resisting capacity in RC column with fire exposure time. Furthermore, additional suggestions are also added to mitigate the heterogeneous composition of the training data. Since the use of ML approaches will significantly reduce the computation time in determining the resisting capacity of fire damaged RC columns, which requires many complex solution procedures from the heat transfer analysis to the rigorous nonlinear analyses and their repetition with time, the introduced ML approach can more effectively be used in large complex structures with many RC members. Because of the very small amount of experimental data, the training data are analytically determined from a heat transfer analysis and a subsequent nonlinear finite element (FE) analysis, and their accuracy was previously verified through a correlation study between the numerical results and experimental data. The results obtained from the application of ML approaches show that the resisting capacity of fire damaged RC columns can effectively be predicted by ML approaches.

The Structural Relationship among Customer Experience, Resort Use Satisfaction, and Customer Behavioral Intentions: The mediating effect of resort use satisfaction (리조트 이용객이 지각하는 고객 경험, 리조트 이용만족, 고객 행동의도 간 구조적 관계: 리조트 이용만족의 매개효과 검증)

  • Hyun Ki SHIN;Byung Min KIM;Chae Won HA
    • The Korean Journal of Franchise Management
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    • v.15 no.1
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    • pp.43-60
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    • 2024
  • Purpose: According to previous studies, customer experience had a significant effect on consumer behaviors. In this perspective, this study investigates the structural relationship among customer experience, resort use satisfaction, and customer behavioral intentions, with focus on the mediating role of resort use satisfaction. Research design, data, and methodology: Data collected from 361 individuals who had experienced the resort service were analyzed using SPSS 29.0 and AMOS 29.0, involving frequency analysis, HTMT, reliability analysis, correlation analysis, confirmatory factor analysis, and structural equation model testing. Result: Firstly, cognitive, and relational experiences had significant effect on resort use satisfaction. Secondly, resort use satisfaction had significant effect on customer behavioral intentions. Thirdly, resort use satisfaction had partial mediating effects in the relationship between customer experiences and customer behavioral intentions. Conclusion: This study academically confirmed the empirical link between customer experience and consumer behaviors. From a practical standpoint, it suggests the necessity of marketing activities that enhance customers' perception of their experiences, as well as resort use satisfaction and customer behavioral intentions, through systematic CS education and management of the physical environment.

Effects of Family Functions in Multicultural Families on Quality of Life: The Mediating Effect of Parenting Attitudes

  • Hwa-Sil JANG;Won-Sop SHIN
    • The Journal of Economics, Marketing and Management
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    • v.12 no.2
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    • pp.37-49
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    • 2024
  • Purpose: This study aimed to enhance understanding of multicultural families in South Korea by examining the impact of family functions on their quality of life and exploring how parenting attitudes in multicultural families influence the relationship between family functions and quality of life. Research design, data and methodology: This study obtained a total of 124 valid surveys with the assistance of the Cheonan and Asan Multicultural Centers. Using SPSS 24.0 and AMOS 24.0, the study conducted frequency analysis, descriptive statistical analysis, reliability and validity, and correlation analysis. To test hypotheses, the study conducted simple (multiple) regression and three-step mediation regression analysis. Results: The results revealed that family functions in multicultural families have a significant impact on parenting attitudes, and parenting attitudes have a significant impact on the quality of life. Additionally, except for autonomy and rational parenting attitudes, parenting attitudes were found to have partial mediating effects between family functions and the quality of life. Conclusions: It was empirically demonstrated that parenting attitudes, along with family functions, are crucial factors for improving the quality of life. The study suggests various methods at the levels of multicultural families, local communities, and the national level to enhance the quality of life in multicultural families.

Assessment of the Contribution of Risk Factors that Cause Cardiovascular Disease in Koreans (한국인의 심혈관질환 발생을 유발하는 위험인자들의 기여도 평가)

  • Cho, Sang-Ok
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.6
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    • pp.592-602
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    • 2020
  • This study examined the contribution of the risk factors that cause cardiovascular disease in Koreans. The subjects were 20,012 adults aged 30~74 years who were enrolled from the 2005~2013 Korean National Health and Nutrition Examination Survey, had filled the risk factors data, and had no cardiovascular disease history. Data analysis was conducted using SAS 9.3, and a weighted composite sample design analysis was performed. The contribution was obtained by applying a squared semi-partial correlation. As a result, they were higher in the order of age (63.9%), smoking (17.3%), systolic blood pressure (7.9%), diabetes (6.9%), antihypertensive medication use (3.0%), and BMI (0.9%) in men. In women, the contributions were in the order of age (54.1%), systolic blood pressure (23.5%), diabetes (13.6%), antihypertensive medication use (5.1%), smoking (3.1%), and BMI (0.6%%). According to age bracket analysis, smoking (51.8~33.7%) was the biggest risk factor, followed in order by age (26.6%) in their 30s and systolic blood pressure (17.3~21.0%) in those older than 40 years in men. In women, the systolic blood pressure (56.2~40.5%) was the main contributor to the risk factors, followed by age (24.0%) in their 30s and diabetes (13.6~32.6%) in those older than 40 years. The contribution of the income level was similar. Therefore, to prevent cardiovascular disease, various programs that reflect the contributions of the risk factors should be developed. Moreover, it is recommended to use the results shown in this study as basic data.

Sensitivity Analysis for Input Parameters of a Radiological Dose Assessment Model (U. S. NRC Model) for Ingestion Pathways (오염 음식물에 의한 피폭선량 평가모델 (U. S. NRC 모델)의 입력변수에 대한 민감도분석)

  • Hwang, Won-Tae;Suh, Kyung-Suk;Kim, Eun-Han;Choi, Young-Gil;Han, Moon-Hee
    • Journal of Radiation Protection and Research
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    • v.25 no.4
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    • pp.233-239
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    • 2000
  • The sensitivity analysis of input parameters was Performed fer an ingestion dose assessment model (U. S. NRC's Regulatory Guide 1.109 model) from routine releases of radionuclides. In this study, three kinds of typical Korean foodstuffs (rice, leaff vegetables, milk) and two kinds of radionuclides $(^{l37}Cs,\;^{131}I)$ were considered. The values of input parameters were sampled using a Latin hypercube sampling technique based on Monte Carlo approach. Sensitivity indices, which represent the influence or the importance of input parameters for predictive results, were quantitatively expressed by the partial rank correlation coefficients. As the results, the ratio of the interception fraction to the yield of agricultural plants and the human consumption rate were sensitive input parameters for the considered foodstuffs and radionuclides. Additionally, in case of milk, the transfer factor of radionuclides from animal intake to milk and the daily intake rate of feedstuffs were sensitive input parameters. The weathering removal half-life and the delay time from food production to human consumption were relatively sensitive for $^{137}Cs$ and $^{131}I$ depositions, respectively.

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