• 동서간호학연구지
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• 제9권1호
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• pp.7-14
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• 2004

Purpose: This study was to identify the effects of self-foot reflexology on the situation score of Urinary incontinence, Self esteem and Depression of the middle-aged women. Method: A quasi-experimental design was used. The subject were 39 middle-aged women with urinary incontinence(18 experimental group, 21 control group). In the experimental group, self-foot reflexology was applied for 30 minutes, three times a week for 4 weeks. The obtained data were analyzed by using the Mann-Whitney U test of SPSS. Result: 1. The situation score of urinary incontinence were reduced significantly in the experimental group as compared to the control group(U=81.00, P=.002). 2. Self esteem were improved significantly in the experimental group as compared to the control group(U=59.00, p=.000). 3. Depression in the experimental group was reduced whereas that of the control group was increased significantly(U=45.00, p=.000). Conclusion: These findings indicate that self-foot reflexology is an effective method for reducing urinary incontinence and depression, and improving self esteem of middle-aged women. Therefore self-foot reflexology can be considered as a independent nursing intervention for urinary incontinence.

• 한국학교보건학회지
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• 제35권3호
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• pp.113-122
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• 2022

Purpose: The purpose of this study was to identify the effects of applying jigsaw cooperative learning to basic nursing practicums on self-directed learning ability, self-efficacy, and learning outcomes. Methods: This study was based on a non-equivalent control group design, and the subjects were nursing students. The study allocated 30 people in the experimental group and 30 people in the control group, and jigsaw cooperative learning was applied to the experimental group for 2 hours every week for a total of 8 weeks. The traditional educational method was applied to the control group. The collected data were analyzed using SPSS v26.0. Results: The experimental group to which jigsaw cooperative learning was applied showed statistically significant differences in self-directed learning ability (F=4.49, p=.038), self-efficacy (F=6.15, p=.016), and learning outcomes (F=19.48, p<.001) compared to the control group. Conclusion: By applying jigsaw cooperative learning to basic nursing practicums, this study confirmed its effect not only on the effective domain such as self-directed learning ability and self-efficacy, but also on learning outcomes in the practical domain. We propose future studies apply jigsaw cooperative learning to various practice classes to achieve learning outcomes that focus on cultivating students' practical capabilities.

• 아동학회지
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• 제22권2호
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• pp.49-64
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• 2001

This study explored the relationship of children's perceived social support and locus of control to their self-esteem. Subjects were 190 5th grade children. Instruments were the revised Coopersmith Self-Esteem Inventory (1967), Dubow and Ullman's Social Support Appraisal Scale (1989), and Crandall's Intellectual Achievement Responsibility (1965). Data were analysed by t-tests and Pearson's correlations. Children with high perceived social support had higher self-esteem than children with low perceived social support. Children who attributed their success to internal factors had high self-esteem; children who attributed their success to external factors had low self-esteem. Successful children who attributed their success to external factors had low self-esteem, regardless of their social support level. Children who attributed their success to their abilities or hard work had high self-esteem only if they received high social support.

• 한국컴퓨터정보학회논문지
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• 제24권6호
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• pp.183-188
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• 2019

This study aimed to analyse the effects of self-control and impulsiveness of college students on smart phone addition and whether self-esteem has mediating effects on them. For the purposes, this study interviewed 4-year college students in Gwangju City with the use of a questionnaire and 314 copies of the responses were used for a final analysis. The data collected was analysed with the use of SPSS 22.0 and the results are presented as follows: First, behavior impulsiveness has a positive effect on self-esteem and smart phone addiction. Second, self-esteem had a positive effect on smart phone addiction. Third, it was discovered that behavior impulsiveness had a positive effect on smart phone addiction through an analysis of mediating effects while self-esteem had an indirect effect on it. Therefore, it was suggested that more care should be paid on smart phone addiction and development of programs against it should be facilitated.

• Nutrition Research and Practice
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• 제14권1호
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• pp.45-54
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• 2020

BACKGROUND/OBJECTIVES: This study aimed to examine differences in weight control practices, beliefs, self-efficacy, and eating behaviors of weight class athletes according to weight control level. SUBJECTS/METHODS: Subjects were weight class athletes from colleges in Gyeong-gi Province. Subjects (n = 182) responded to a questionnaire assessing study variables by self-report, and data on 151 athletes were used for statistical analysis. Subjects were categorized into High vs. Normal Weight Loss (HWL, NWL) groups depending on weight control level. Data were analyzed using t-test, ANCOVA, x²-test, and multiple logistic regressions. RESULTS: Seventy-three percent of subjects were in the HWL group. The two groups showed significant differences in weight control practices such as frequency (P < 0.01), duration and magnitude of weight loss, methods, and satisfaction with weight control (P < 0.001). Multiple logistic regression showed that self-efficacy (OR: 0.846, 95% CI: 0.730, 0.980), eating behaviors during training period (OR: 1.285, 95% CI: 1.112, 1.485), and eating behaviors during the weight control period (OR: 0.731, 95% CI: 0.620, 0.863) were associated with weight control level. Compared to NWL athletes, HWL athletes agreed more strongly on the disadvantages of rapid weight loss (P < 0.05 - P < 0.01), perceived less confidence in controlling overeating after matches (P < 0.001), and making weight within their weight class (P < 0.05). HWL athletes showed more inappropriate eating behaviors than NWL athletes, especially during the weight control period (P < 0.05 - P < 0.001). CONCLUSIONS: Self-efficacy was lower and eating behaviors during pre-competition period were more inadequate in HWL athletes. Education programs should include strategies to help athletes apply appropriate methods for weight control, increase self-efficacy, and adopt desirable eating behaviors.

• International Journal of Control, Automation, and Systems
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• 제4권6호
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• pp.756-762
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• 2006

Shape Memory Alloy(SMA) actuators, which have the ability to return to a predetermined shape when heated, have many potential applications such as aeronautics, surgical tools, robotics and so on. Although the conventional PID controller can be used with slow response systems, there has been limited success in precise motion control of SMA actuators, since the systems are disturbed by unknown factors beside their inherent nonlinear hysteresis and changes in the surrounding environment of the systems. This paper presents a new development of a SMA position control system by using a self-tuning fuzzy PID controller. This control algorithm is used by tuning the parameters of the PID controller thereby integrating fuzzy inference and producing a fuzzy adaptive PID controller, which can then be used to improve the control performance of nonlinear systems. The experimental results of position control of SMA actuators using conventional and self-tuning fuzzy PID controllers are both included in this paper.

• 아동학회지
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• 제29권5호
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• pp.65-78
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• 2008

This study examined whether parental psychological control influences adolescents' depressive feelings through personality features of dependency and self-criticism. Participants were 315 high school students (M=16 years) who completed questionnaires tapping two types of parental psychological control and student personality and depressive symptoms. Both girls and boys perceived equal levels of maternal and paternal separation-anxious psychological control. Boys perceived higher achievement- oriented psychological control of fathers than mothers; girls perceived equal levels of maternal and paternal achievement-oriented control. Structural relations between types of psychological control, personality features, and depressive symptoms were equivalent for both mothers and fathers and for both boys and girls. Results confirmed that separation-anxious and achievement-oriented control have negative effects on adolescents' adjustment through differential pathways; dependency and self-criticism, respectively.

• 아동학회지
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• 제32권4호
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• pp.15-36
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• 2011

This study examined the effects of parental psychological control, dysfunctional perfectionism, and self-conscious emotions on depression in adolescents. The sample consisted of 471 adolescents (212 boys, 259 girls) attending high schools in Seoul. The results from Structural Equation Modeling indicated that dysfunctional perfectionism and self-conscious emotions mediated the impact of parental psychological control on depression only in the mother-daughter relationship, such that with mothers' greater psychological control, girls experienced higher levels of dysfunctional perfectionism and self-conscious emotions, and reported higher depression scores. Similarly, dysfunctional perfectionism functioned as a mediator in the association between parental psychological control and adolescent depression. This tends to support findings from previous studies emphasizing the importance of same sex parent-adolescent relationships. Dysfunctional perfectionism also had the largest direct effect of all variables analyzed on depression. Parental psychological control did not show statistically significant effects on self-conscious emotions for either boys or girls. These findings suggest that interventions designed to promote adolescents' mental well-being should focus on parenting of the same sex parent as well as adolescent cognitive characteristics.

• 아동학회지
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• 제34권5호
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• pp.61-77
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• 2013

This study examined the influence of cognitive-emotional regulation, emotional self-disclosure and maternal psychological control on adolescent depression. The participants in this study consisted of 280 middle school students and 287 high school students in Gyung Gi Province, Korea. The results of this study were as follows. First, the high school students exhibited higher scores on depression than middle school students while there were no meaningful differences in maternal psychological control, cognitive-emotional regulation and emotional self-disclosure. Second, both middle and high school students' depression levels were positively associated with maternal psychological control and maladaptive cognitive-emotional regulation. Both middle and high school students' depression was negatively associated with emotional self-disclosure. Third, maladaptive cognitive-emotional regulation and maternal psychological control had a significant effect on both middle and high school students' depression levels, while emotional self-disclosure had a significant effect on high school students' depression only. In both age groups there was an interactive effect of maladaptive cognitive-emotional regulation and maternal psychological control on depression.

• 한국정밀공학회지
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• 제18권2호
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• pp.119-125
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• 2001

This paper presents an experimental study on active control of self-excited vibration for a high speed turbomachinery. In order to suppress the self-excited vibration, it is necessary to actively control the air film pressure or the air film thickness. In this study, active pads are used to control the air film thickness. Active pads are supported by pivots containing piezoelectric actuators and their radial position can be actively controlled by applying voltage to the actuators. The transfer characteristics from actuator inputs to shaft vibration outputs are experimentally investigated. In a tilting-pad gas bearing (TPGB), a shaft is supported by the pressurized air film. Four gap sensors were used to measure the vibration of the shaft and PID was used in the feedback control of the shaft vibration. The experimental results show that the self-excited vibration of the rotor can be effectively suppressed if the PID controller gains are properly chosen. As a result we find that the feedback control is effective for suppressing the self-excited vibration of a rotor system using stack-type PZT actuators.