• Korean System Dynamics Review
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• v.8 no.1
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• pp.173-186
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• 2007

This research consists of (1) building (or molding) the Dynamics Simulation Model on Return Policy mainly used in publications, phonographs, and computer industry; which are seen used in supply chain contract known as effective control mechanism under the varied supply chain situations, and (2) analyzing the effects that return rates and seller's contract parameters have in the outcome of the model and (3) observing how the effectiveness of Return Policy changes under such circumstances where the buyer's sales ability and the seller's risk inclination are taken into account. Thus, the main purpose of this research lies in analyzing what exactly are the effects (and or outcome) that sales ability and risk inclination have in Return Policy, and additionally by conducting comprehensive research on Supply Chain Policy Dynamics Simulation Model, we will try to prove that not only the Systems Dynamics approach is highly contributive in supply chain management but also that it will serve as a foothold in future research. As a result of the research, supply chain achievement level turned out to be high when Return Policy is enforced, and the achievement level was even higher when seller's sales ability was taken into consideration along with the Return Policy. On the other hand, the achievement level decreased when the seller had risk aversive tendencies.

• Korean Journal of Human Ecology
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• v.13 no.6
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• pp.833-845
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• 2004

This study examines different individual and environmental factors that affect children's self-control. For an analysis, locus of control, perceived competence, and achievement motivation were all included in individual variables. For family variables, mothers' parenting and patents' marriage conflict were examined. For classroom psycho-social environment, teacher support, peer relationship, class involvement, and teachers' supervision were used. The sample consisted of 548 fifth and sixth grade children. Statistics and methods used for the data analysis were Cronbach's alpha, frequency, percentage, Pearson's correlation, and Hierarchical Regression. Several major results were found from the analysis: First, locus of control, perceived competence, and achievement motivation had a positive correlation with children's self-control. Second, mothers' affective parenting had a positive correlation with children's self-control. However, mothers' controlling parenting and parents' marriage conflict had a negative correlation with it. Third, teacher support, peer relationship, and class involvement had a positive correlation with children's self-control. In addition, teacher supervision had a positive correlation with girls' self-control. Fourth, class involvement, locus of control, and academic competence were important variables predicting boys' self-control. On the other hand, Class involvement, achievement motivation, academic competence, teacher's supervision, and mothers' controlling parenting were important variables predicting girl's self-control.

• Journal of Educational Research in Mathematics
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• v.22 no.4
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• pp.603-617
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• 2012

The 2011 Revision of the National Mathematics Curriculum, amended based on the 2009 Curriculum version, focuses on three important issues: 1) 20% reduction of the previous curriculum contents; 2) improvement of students' creativity through mathematical processes; 3) flexible management of curriculum. Despite the importance in applications, it has not provided a manual for textbook authors and teachers. Consequently, they are likely to encounter difficulties in interpreting goals of learning achievements. This paper identifies the purposes and contents of achievement standards, and discusses how to implement it at school.

• Journal of Digital Convergence
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• v.14 no.3
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• pp.401-408
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• 2016

This study was an investigation of 379 people to analyze the relations between leadership and happiness recognized by university athletes. First, happiness of university athletes showed the highest score in smooth relationship with parents. And male athletes score higher than female athletes. Second, the sub-factors of achievement and self-acceptance of happiness have significantly correlated with all factors of leadership. In particular, self-improvement, goal-seeking, and influence are most highly correlated. And the religious influence was the lowest correlation. Third, achievement orientation of leadership factors affect all sub-factors of happiness and influence, and self-regulation has an effect to sub-factors of happiness. Fourth, flexible leadership, interpersonal understanding, teamwork and cooperation, orientation did not affect happiness.

• Journal of Digital Convergence
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• v.12 no.10
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• pp.531-539
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• 2014

This is an exploratory study to verify the impact of applying SNS to lecture on the professor trust and students achievement. The subject of the study is two groups which consist of SNS applied class and the group using legacy online class supporting system and the contents, material, activities of class are same. We verified the differences between two groups with the professor trust divided into 4 constructs such as intimacy, expertise, teaching ability, leadership based on the literature review and students achievement classified into midterm and final. The results shows that intimacy and final evaluation are statistically significant between two groups.

• Journal of the Korean Society of School Health
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• v.28 no.3
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• pp.248-255
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• 2015

Purpose: This study was conducted to explore the relationship between high school students' mental social health and their tendency toward social networking addiction. Methods: The subjects were 543 high school boys and girls living in D city. The data were collected from the 3rd to 21st of March in 2014. Data were analyzed using t-test, ANOVA, Duncan's post-hoc test, Pearson's correlation analysis, and hierarchical regression with SPSS/ Win 21.0. Results: Social networking addiction showed significant differences depending on gender (t=-7.03, p<.001), academic achievement (t=4.571, p=.011), and the level of maternal education (t=3.344, p=.019). Social health was correlated with the tendency toward social networking addiction. Multiple regression analysis found that gender, academic achievement and social health were associated with the level of social networking addiction (F=8.750, p<.001, Adj. $R^2=.201$). Conclusion: The results suggest that it is necessary to take into account gender characteristics, academic achievement and social health in order to develop effective management programs for social networking addiction among high school students.

• Journal of Digital Convergence
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• v.19 no.4
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• pp.1-8
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• 2021

This experimental study was to examine the impact of collaborative learning in a virtual environment on students' learning outcomes and satisfaction. The collaborative virtual learning environment was created for a Korean history class for high school students. A total of 119 participants were recruited and were randomly assigned to either "collaborative group" or an "individual group." Students' academic achievements and satisfaction were collected as measurement tools to examine the effect of collaborative learning in the virtual learning environment and collected data were tested by independent sample t. The results showed that participation in collaborative groups had a significant positive effect on academic achievement and satisfaction than individual groups.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.535-546
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• 2017

The purpose of The purpose of this study is to empirically investigate the relationships among achievement goal-orientation, sports confidence, and exercise commitment in university student-athletes. To fulfill this purpose, data were collected from 347 student-athletes enrolled in universities located in Seoul and the Gyeong-In area, and analysis thereof was carried out. Conclusion drawn from the performance of this study is as follows: First, university student-athletes' achievement goal-orientation has significant effects on their sports confidence. Second, university student-athletes' sports confidence has significant effects on their exercise commitment. Third, university student-athletes' achievement goal-orientation has significant effects on their exercise commitment. Fourth, sports confidence has indirect mediation effects on the relationship between achievement goal-orientation and exercise commitment in university student-athletes, and it was found that these factors had causal relationships. Therefore, the findings of this study show that university student-athletes' achievement goal-orientation plays an important role for their effective commitment to exercise, in the process of which sports confidence plays the role of a mediator, suggesting that psychological support as well as motor skill cultivation is necessary to enhance university student-athletes' performance.

• Journal of Gifted/Talented Education
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• v.21 no.3
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• pp.611-630
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• 2011

The purpose of the study was to investigate which psychological factors influence on the gifted students' achievement. As a psychological factor, self-determination, learning goal-orientation, self-efficacy, belief of intelligence, and self-regulated learning strategy were examined. The difference in psychological factors between the gifted with high achievement and the gifted with low achievement was to explored. For the study 128 gifted students' data from second-year data of Korean Education Longitudinal Study (KELS) were selected and analyzed. The findings indicate that the predictors of gifted students' achievement are extrinsic regulation, identified regulation, mastery-approach goal, self-efficacy, elaboration, and meta-cognition factor. Especially, the factor of elaboration and identified regulation are the strongest predictors. The findings from t-test analysis indicate that the gifted with low achievement show the low level in self-determination, mastery-approach, self-efficacy, elaboration, meta-cognition, place management and seeking social assistance from teacher. Therefore the developing elaboration, one of regulation learning strategy, is essential to improve the achievement of the gifted students with low scores.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.617-626
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• 2021

This study was conducted to explore self-directed learning, learning flow, academic self-efficacy and academic achievement on nursing students and to investigate the major factors that influence academic achievement. Data were collected from October 15 to 19, 2021, data were analyzed utilizing the SPSS WIN 21.0 program. Participants in this study were 145 students of the college in J city. As a result of the study, self-directed learning was 3.67±0.65 points out of 5, learning flow was 3.35±0.76 points out of 5, academic self-efficacy was 3.43±0.94 points out of 5, and academic achievement was 3.85±1.13 points out of 5. The relationships between self-directed learning, learning flow, academic self-efficacy and academic achievement showed significant positive correlations. As a result of multiple regression analysis, factors influencing the academic achievements of nursing students were found to be learning flow and academic self-efficacy. Therefore, in order to increase academic achievement in nursing college students, it is necessary to develop educational programs to increase the academic self-efficacy, and to continuously check the effect.