• Journal of the Korean School Mathematics Society
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• v.17 no.2
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• pp.275-290
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• 2014

This study aims to examine how secondary mathematics teachers perceive and how they use constructed-response assessment in their mathematics classrooms. For this purpose, we conducted a survey in Seoul, Inchun, and Gyeonggi-do; 189 teachers participated in the survey. Results from the data analysis suggest as follows: a) the secondary mathematics teachers participated in the survey seem to consider the primary goals of assessment through constructed-response items as evaluating student achievement and the development of students' thinking and creativity; b) the teachers perceive that constructed-response assessment would promote students' mathematical thinking and problem solving skills; c) in general, constructed-response items were included in both performance assessment(less than 20 percent) and paper-and-pencil test(20 to 40 percent); and d) constructed-response items were primarily used as a part of regular examination, rather than as an independent assessment.

• The Journal of the Korea Contents Association
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• v.19 no.2
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• pp.525-538
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• 2019

The objective of this study is to verify the effects of the Taekwondo athletes' sports participation motivation on the achievement orientation and achievement behaviors and to verify the mediating effect of the achievement orientation. The subjects of this study were 256 athletes' in Honam. The questionnaire data were utilized for verification of hypotheses through structural equation model analysis. As a result of verification, Taekwondo athletes' sports participation motivation presented a statistically significant positive correlation with their achievement orientation. The achievement orientation showed a significant positive effect on the achievement behaviors with the mediating effect of the achievement orientation. Finally, the result of this study is meaningful in a point of view of the effect of Taekwondo athletes' sports participation motivation on the achievement orientation and achievement behaviors. It is worthwhile to verify the mediation effect of achievement orientation.

• Journal of Digital Convergence
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• v.17 no.11
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• pp.531-536
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• 2019

The Ministry of the Interior and Safety amends the enforcement ordinance of the public service design method and applies it to the project tasks of each institution and cases of social problem solving and public service innovation are increasing according to service design methodology. This study is to develop the $360^{\circ}$ VR content element in order to deliver the understanding and effective improvement of the service to the consumers in the process of problem discovery and the prototype that visualize the key solution according to the service design methodology. By applying it to the actual public service design project, it was possible to predict the result with high satisfaction after improvement. This paper is meaningful in that it proposes new approach and empirical value to consumers and contribute to the improvement of the service design process as a convergence study on the future service design using the $360^{\circ}$ VR prototype.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.240-255
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• 2021

The kindergarten teachers play a role in closely babysitting infants, teachers' high empathy helps respect infants' emotions and opinions, and leads to positive relationships, ultimately improving their job satisfaction and confidence, but lack specific research results. As a result, this study sought to find out how the empathy of kindergarten teachers affects job stress through positive psychological capital, and to find ways to increase positive psychological capital and empathy. To achieve this, the research method identified the causal relationship of each variable based on the results of the survey of 212 kindergarten teachers in Seoul and Gyeonggi Province. According to the study, first, among the empathy abilities of kindergarten teachers, emotional empathy has a positive impact on all factors of positive psychological capital. Second, cognitive empathy among empathy abilities has a positive impact on all factors of positive psychological capital. Third, looking at the overall positive psychological capital of kindergarten teachers and the effects of job stress showed that it negatively affects self-efficacy and resilience.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.6
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• pp.1195-1204
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• 2021

In this paper, we present an optimal design method for wave power generators using the response surface analysis. Especially, in our method, we reduce the mechanical loss by selecting the linear generator whose linear movement can be converted to the electrical energy directly with the vertical movement of waves. Therefore, we calculate the exciting force acting on the drive device in a slow-wave condition and determine the winding process with a ratio of the slots and poles for the improvement of energy conversion efficiency. In addition, we employ the regression analysis for deriving the shape factors of the stator and the translator, which have a significant effect on the performance of a generator. We choose the best design variables through the response surface analysis, and then we study the optimization method for designing the efficient experiment using the analysis results. Finally, we show the validity of the proposed method through the simulation results.

• Journal of the Korean Applied Science and Technology
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• v.40 no.3
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• pp.402-411
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• 2023

The purpose of this study was to investigate the effects of a cognitive enhancement program combined Silbot on cognitive function, depression, and dementia prevention behavior in the elderly complaining of subjective memory decline. The subjects were 170 elderly people living in Seongnam-si, Gyeonggi-do, and the study was performed at a welfare center. A total of 20 sessions program using Silbot and physical activity was developed and applied, and were evaluated using the Korean version of Montreal Cognitive Assessment (K-MoCA), Geriatric depression Scale(GDS) , and Dementia Prevention Behavior before and after intervention. As a result of the study, the cognitive enhancement program combined Silbot showed statistically significant changes in cognitive function (t=-4.49, p<.001) and depression (t=2.58, p=.023) in the elderly. Therefore, it is expected that the cognitive enhancement program using Silbot will be a useful program that can enhance the cognitive function of the elderly and reduce depression.

• 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.

• Korean Journal of Applied Biomechanics
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• v.18 no.1
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• pp.213-226
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• 2008

E. H. KIM, E. S. CHOI, D, H. NAM, S. S. KIM, J. W. CHUNG and T. W. KIM, The Instrumenfal Development for Pulling . Reaping Training & Measuring in Judo.Korean Jiurnal of Sport Biomechanics, Vol. 18, No. 1, pp. 213-226, 2008. The purpose of this study was to develop a judo-doll uke(partner : doll-uke) for training and measurement applicable to pulling, pushing and reaping in judo. In Judo the most common techniques consist of the pulling, pushing and sweep which all need to be practiced with a partner. So the research needs to develop a measurement system that can be used to evaluate the forces involved with these techniques. Also the Doll-Uke must be developed so that judokas can train alone. After the manufacture of Doll-Uke the usefulness of it must be evaluated. The height of a Doll-Uke is l70cm and its weight is 50kg. Doll-Uke was developed with a trunk angle of 55 and the lower extremities of an angle of 45. The Doll-Uke can also measure the forces developed during the pulling, pushing and sweep. Due to the ability of the system to measure the forces while preforming Judo techniques feedback can be provided to the Judokas to improve their performance.

• Korean Journal of Applied Biomechanics
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• v.18 no.1
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• pp.137-146
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• 2008

The purpose of this study is to examine the causes of errors from EGR posture on the balance beam, which is bending flick-flack salto backward stretched national team players through kinematic analysis, and present training methods for them so as to provide scientifically useful information to coaches and athlete. Findings from this study are summarized below. The most important factors that affect the errors in boyd center position and speed change were the speed change of left and right body centers and the horizontal and vertical speed changes. The left and right acceleration changes were greater in failed posture than in successful posture. The horizontal and vertical accelerations in E3 and E5 were the key factors that affected the backward somersault and landing. The angular speed changes which varied between success and failure were notable in head and shoulder joints. In individual results. The section when the angular speeds of head and shoulder joint must be the greatest was E4. In this section, when the body is extending instantly in a bent posture, increasing the angular speeds of head, shoulder and hip joints can improve the duration of staying in the air and the rotation radius of a somersault.

• Korean Journal of Applied Biomechanics
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• v.12 no.2
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• pp.381-392
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• 2002

This study attempted to indentify changeability of the factorial structure of kinematic analysis in bowling. Subjects of group composed of three groups : Higher bowers who are national representative bowers with 200 average point and one pro-bowler. Middle bowlers who are three common persons with 170 average points. Lower bowler who are three common persons with 150 average points. Motion analysis on throw motion in three groups respectively has been made through three-dimension cinematography using DLT method. Two high-speed video camera at operating 180 and 60 frame per secondary. T-test factorial structure analysis has been used to define variable relations. It was concluded that : 1. The difference of x1, x2, x4, x8, x9, x11, x12, x13 where significant between two group. 2. The difference of number of spin and angle of the back-hand where statistically significant between two group(p<.001, p<.05) 3. The correlation over r=.5 between the kinematic data x1, x2, x3, x9, x10, x11. In the rotation loading matrix Factor 1 was x1, x2, x9, x10 and Factor 2 relates to x3, x11. 4. In order to obtain the factor score as follow as ; Factor 1 = (0.248)X1 + (0.265)X2 + (-0.074)X3 + (0.259)X9 + (0.259)X10 + (-0.025)X11 Factor 2=(-0.016)X1 + (-0.055)X2 + (0.84)X3 + (-0.013)X9 + (-0.007)X10 + (0.553)X11.