• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.8
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• pp.397-406
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• 2016

The purpose of this descriptive study was to identify the relationship between maternal self-efficacy and young children's ego-resilience on their children's adjustment to educational institutions. The study population consisted of 162 young children's mothers and teachers from seven kindergartens in A city. Data were collected from June 1 to June 30, 2016. The questionnaire consisted of 73 items about maternal self-efficacy, children's ego-resilience and children's preschool adjustment. The collected data were analyzed by frequency, descriptive methods and Pearson's correlation coefficient using SPSS/WIN 22.0 version. The study results were as follows. First, maternal self-efficacy was weakly positively(+) correlated with the activeness of children's preschool adjustment. Second, children's ego-resilience was significantly positively(+) correlated with children's preschool adjustment. Third, regarding the relationship between maternal self-efficacy and young children's ego-resilience on their children's adjustment to educational institutions, maternal self-efficacy was weakly positively(+) correlated with children's ego-resilience and children's preschool adjustment, while children's ego-resilience was strongly positively(+) correlated with maternal self-efficacy and children's preschool adjustment. In conclusion, this study finding of a positive(+) relationship between maternal self-efficacy and young children's ego-resilience on their children's adjustment to educational institutions indicates that children's ego-resilience is a reliable predictor of children's preschool adjustment. These study results imply that children's ego-resilience is strongly influenced by children's preschool adjustment.

• Journal of Korean Home Economics Education Association
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• v.21 no.3
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• pp.29-43
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• 2009

The purposes of this study were to examine effective variables influencing on adolescents' mobile phone addiction. The subjects were the 666 middle or high school students who had their own mobile phone in Gwangju. Data were analyzed with frequency, percentage, cronbach's ${\alpha}$, mean, SD, pearson's correlation and multiple regression using SPSS/PC WIN 14.0 program. The major findings were as follows: 1. The most frequently used function of student mobile phones was text message and they used text message more than 41 times a day. Mostly they were talking to the same sex friends on the phone and the monthly charges ranged from 20,000 to 30,000 won. In general, they called to their friends after school. Their parents' attitudes toward their mobile phone using showed that the most of their parents did not care about their children's mobile phone use. The restriction of using their mobile phone at school was normal. 2. The average scores of mobile phone addiction were lower than median(3.0) and self esteem, self control, family strengths, peer conformity and school life adaptation were higher than median. 3. The adolescence's mobile phone additions were influenced by peer conformity, school life adaptation, school levels, sex and self control. And these variables explained to the adolescence's mobile phone additions about 28%.

• The Journal of the Korea Contents Association
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• v.14 no.4
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• pp.256-266
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• 2014

Purpose : This study was to explore the long-term effects of breast cancer prevention volunteering on self-efficacy, depression, and posttraumatic growth among survivors with breast cancer. Methods: This pilot study utilized a longitudinal design. Participants were 14 women with breast cancer who participated in the breast cancer prevention educational program The data were collated between February and August in 2013. Self-report questionnaires were used to measure the self-efficacy for self-management of breast cancer, depression, and posttraumatic growth at pre-education(T0), 1 month(T1), 3 months(T2), and 6 months(T1) post-education. A generalized estimating equation regression model was used to identify the effects. Results: The scores of self-efficacy increased significantly at T1(${\chi}^2$=5.56, p=.0l8) and D(${\chi}^2$=4.56, p=.033) compared with T0. Depression and posttraumatic growth remained stable with fairly good levels throughout the 6-month period. Conclusion: The results of this study suggest that breast cancer prevention volunteering in survivors with breast cancer can be effective for enhancing their self-efficacy and maintaining psychological well-bang. Also the study showed that such volunteering activity could be a useful program not only for the general public but also for breast cancer survivors.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.683-689
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• 2017

Given that the ratio of adolescents among North Korean refugees is increasing, it is the right time to study the present situation of juvenile North Korean defectors. North Korean adolescents tend to find themselves in an uncomfortable situation as they experience unfamiliar lives in South Korea, and act passively in various situations. A proper resolution of such problems in this situation will help them adapt smoothly to South Korean society. This study investigates the relationship between social support, self-esteem, and problem-solving abilities of North Korean adolescent refugees based on a survey on 213 North Korean teens which was performed for 24 days beginning on June 14 2017. The study results show that emotional, material, informational, and evaluative support for North Korean adolescent defectors, which is a type of social support, had a positive effect on their self-esteem, and self-esteem in turn had a positive effect on their problem solving ability. In addition, self-esteem had a mediating effect on the relationship between the four types of social support and problem solving ability of North Korean adolescent defectors. This study suggested a practical plan to improve the problem solving ability of North Korean adolescent defectors for their smooth adaptation to South Korean society, through social support and improved self-esteem of North Korean adolescents, such as program development or self - development training.

• Restorative Dentistry and Endodontics
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• v.35 no.2
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• pp.106-115
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• 2010

The purpose of this study was to evaluate the microtensile bond strength (${\mu}TBS$), failure modes and bonding interfaces of self-etching and three self-adhesive resin cements to dentin and indirect composite resin. Cylindrical composite blocks (Tescera, Bisco Inc.) were luted with resin cements (PA: Panavia F 2.0, Kuraray Medical Inc., RE: RelyX Unicem Clicker, 3M ESPE., MA: Maxem, Kerr Co., BI: BisCem, Bisco Inc.) on the prepared occlusal dentin surfaces of 20 extracted molars. After storage in distilled water for 24 h, $1.0\;mm\;{\times}\;1.0\;mm$ composite-dentin beams were prepared. ${\mu}TBS$ was tested at a cross-head speed of 0.5 mm/min. Data were analyzed with one-way ANOVA and Tukey's HSD test. Dentin sides of all fractured specimens and interfaces of resin cements-dentin or resin cements-composite were examined at FESEM (Field Emission-Scanning Electron Microscope). In conclusion, PA and RE showed higher bond strength and closer adaptation than MA and BI when indirect composite blocks were luted to dentin using a self-etching and three self-adhesive resin cements.

• Journal of Family Resource Management and Policy Review
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• v.28 no.1
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• pp.1-11
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• 2024

The purpose of this study was to provide basic data to help individuals with disabilities in single-person households maintain a happy life by analyzing how interpersonal skills necessary for community adaptation and self-esteem, which are personal factors, affect life satisfaction. The self-esteem mediation effect was verified with SPSS Process Macro 4.3 using data on 828 single-person households sourced from the seventh wave of the Disability Employment Panel Survey(2022) conducted by the Employment Development Institute of the Korea Disability Employment Service. To examine the effects of interpersonal skills and self-esteem on life satisfaction, a multiple regression analysis was conducted. While it was found that higher self-esteem was associated with higher life satisfaction, interpersonal skills did not have a significant effect on this association. The path from interpersonal skills to life satisfaction via self-esteem was deemed statistically significant, suggesting that self-esteem mediates the relationship between interpersonal skills and life satisfaction. This study emphasizes the importance of interpersonal relationships for the life satisfaction of individuals with disabilities in single-person households in a modern society in which the problem of social isolation experienced by individuals in single-person households is emerging. Furthermore, it provides a direction for these individuals to become the main actors of their own lives.

• Journal of Families and Better Life
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• v.14 no.4
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• pp.13-26
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• 1996

Based on the conceptual framework of Double ABCX model of family stress and adaptation this study developed the enrichment program for the relationship of young daughters-in-law with their mothers-in-law. Results of empirical research concerning the relationship between them also provided for the basis of designing this program. Consisting of 6 sessions this education program was delivered to 20 young daughters-in-law in a rural area of Kyunggi-do province. The effectiveness of the program was evaluated through one-group posttest design and follow-up interview. Overall most participants in the program reported that the relationship with their mothers-in-law was enhanced in terms of understanding mothers-in-laws psychology and roles of improving communication and problem-solving skills self-control and of blaming.

• Journal of Institute of Control, Robotics and Systems
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• v.14 no.10
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• pp.1014-1021
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• 2008

This paper proposes an intelligent sliding mode control method for robotic systems with the unknown bound of model uncertainties. In our control structure, the unknown bound of model uncertainties is used as the gain of the sliding controller. Then, we employ the function approximation technique to estimate the unknown nonlinear function including the width of boundary layer and the uncertainty bound of robotic systems. The adaptation laws for all parameters of the self-recurrent wavelet neural network and those for the reconstruction error compensator are derived from the Lyapunov stability theorem, which are used for an on-line control of robotic systems with model uncertainties and external disturbances. Accordingly, the proposed method can not only overcome the chattering phenomenon in the control effort but also have the robustness regardless of model uncertainties and external disturbances. Finally, simulation results for the five-link biped robot are included to illustrate the effectiveness of the proposed method.

• Proceedings of the IEEK Conference
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• 2004.06a
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• pp.281-284
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• 2004

This paper presents the design and implementation of a QoS based enhanced collaboration system in MDO. This is an efficient distributed communication tool between designers. It supports text communication, audio/video communication, file transfer and XML data sending/receiving. Specially, this system supports a dynamic QoS self-adaptation by using the improved direct adjustment algorithm (DAA+). The original direct adjustment algorithm adjusts the transmission rate according to the congestion level of the network, based on the end to end real time transport protocol (RTP), and controls the transmission rate by using the information of loss ratio in real time transport control protocol (RTCP). But the direct adjustment algorithm does not consider when the RTCP packets are lost. We suggest an improved direct adjustment algorithm to solve this problem. We apply our improved direct adjustment algorithm to our of QoS (Quality of Service) [1] based collaboration system and show the improved performance of transmission rate and loss ratio.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.39 no.12
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• pp.1306-1316
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• 1990

A controller using a multilayer neural network is proposed to the dynamic control of a PUMA 560 robot arm. This controller is developed based on an error back-propagation (BP) neural network. Since the neural network can model an arbitrary nonlinear mapping, it is used as a commanded feedforward torque generator. A Proportional Derivative (PD) feedback controller is used in parallel with the feedforward neural network to train the system. The neural network was trained by the current state of the manipulator as well as the PD feedback error torque. No a priori knowledge on system dynamics is needed and this information is rather implicitly stored in the interconnection weights of the neural network. In another experiment, the neural network was trained with the current, past and future positions only without any use of velocity sensors. Form this thim window of position values, BP network implicitly filters out the velocity and acceleration components for each joint. Computer simulation demonstrates such powerful characteristics of the neurocontroller as adaptation to changing environments, robustness to sensor noise, and continuous performance improvement with self-learning.