• Journal of the Korean Society for Precision Engineering
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• v.13 no.5
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• pp.139-147
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• 1996

PID control has been widely used for real control systems. Particularly, there are many researches on control schemes of tuning PID gains. However, to the best of our knowledge, there is no result for discrete-time systems with unknown time-delay and unknown system parameters. On the other hand, Generalized predictive control has been reported as a useful self-tuning control technique for systems with unknown time-delay. So, in this study, based on minimization of a GPC criterion, we present a self-tuning PID control algorithm for unknown papameters and unknown time-delay system. A numerical simulation was presented to illustrate the effectiveness of this method.

• The Journal of the Korea Contents Association
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• v.16 no.4
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• pp.132-143
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• 2016

The purpose of this study is to analyze the impact of self-control of adolescence on the teacher attachment. In addition to this, it is to verify the mediating effects of self-esteem and self-confidence of adolescence. For this reason, we analyzed the data of 2,854 students in the second grade of the middle school in 2010 by a model of Structural Equation. The main findings were as follows. First, self-control of adolescence was found to give a significant positive effect in teacher attachment. In this case, the self-control of adolescence was found to be significant indirect effect and direct effect, and total effect. Second, self-esteem and self-confidence of adolescence, it was found that self-control of adolescence has a significant meditating effect in the process of a significant positive effect in teacher attachment. Based on the results of these studies, we have proposed the importance of the self-control training of adolescence.

• Journal of Digital Convergence
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• v.17 no.11
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• pp.395-407
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• 2019

This study attempted to verify the structural model of the effects of stress, self-efficacy, and self-control on smartphone addiction in University students. The subjects of this study were 440 University students in G and P city. Results, First the most influential variables on smartphone addiction were self-control, followed by stress, and two variables explained explanation about smartphone addiction in 34%. Second, self-efficacy had a positive effect on self-control and stress had a negative effect. Both variables had an indirect effect on smartphone addiction through self-control. In groups less than 4 hours and above, there was a partial regulation effect because of differences between groups in the smartphone addiction pathway coefficients of stress and self-efficacy. Therefore, in order to reduce smartphone addiction, it is important to find ways to reduce stress and increase self-control and self-efficacy, and necessary to develop various programs and tailor educational interventions for each individual situation.

• Journal of Advanced Marine Engineering and Technology
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• v.23 no.1
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• pp.40-46
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• 1999

A self-tuning FPID(Fuzzy Proportional Intergral Derivative) controller fo load frequency control of 2-area power systemis proposed in this paper. The paramters of the proposed self-tuning FPID controller are self-tuned by the proposed fuzzy inference technique. Therefore in this paper the fuzzy inference technique of PID gains using PSGM(Product Sum Gravity Method) is presented and is applied to the load frequency control of 2-area power system. The computer simulation results show that the proposed controller give better more control characteristics than convention-al PID, FLC under load changes.

• Korean Journal of Child Studies
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• v.32 no.4
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• pp.203-216
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• 2011

The purpose of this study was to investigate the relationships between mothers' parental intelligence and children's abilities of self-control and empathy. 180 children aged 5 were selected from 4 kindergartens in G city. The gender breakdown for the sample group was as follows : boys comprised 60.0% (108) and girls comprised 40.0% (72) of the total sample. The Parental Intelligence Scales (PIS) was used to rate mothers' parental intelligence. Children's self-control and empathy were also measured. The SPSS 12.0 program was used for the purposes of analyzing the data. The results of the study were as follows. Firstly, mothers' parental intelligence was related in a general sense with children's self-control. However, such a relationship did not appear between rejection in the area of parental intelligence and self appraisal in self-control, nor did it appear between acceptance in intelligence and emotion in self-control. Secondly, the variable of encouragement was the only one in evidence in terms of mothers' parental intelligence and how it was related with children's empathy.

• Journal of the Korean Society of Safety
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• v.15 no.4
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• pp.112-118
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• 2000

This paper is resulted from the research to activate Self-control Safety Management system that adopted to improve an assessment system for Hazard Prevention Plan. And members of company, university and research institute have jointly participated in the research. First, it is investigated that introduced background and processing method with existing practical data & materials references in order to understand what domestic Self-control Safety Management system will be available for. And general construction company at site have their ability to assess Hazard Prevention Plan by mailing questionnaire to on thousand site, visits, and interviews. Also, It is investigated how much they have the assessment ability. It is selected to do a questionnaire survey for the status of self-regulatory safety assessment ability of the designated self-regulatory companies in order to produce and enhance the self-regulatory assessment ability and the necessity of Self-control Safety Management system. Finally, it is selected to do a questionnaire survey for fixing and the enhance Self-control Safety Management system of general construction contractors.

• Journal of the Korean Society of School Health
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• v.32 no.2
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• pp.116-124
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• 2019

Purpose: This study was performed to measure the influence of drinking motives, drinking refusal self-efficacy, and self-determination on the intention to control drinking among nursing students. Methods: A cross-sectional survey was done with the participation of 258 nursing students attending four universities in G city. Data collection was conducted from May to June, 2018, using a self-report questionnaire. Data were analyzed using the t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficients, and Hierarchical multiple regression. Results: The average scores for drinking motives, drinking refusal self-efficacy, self-determination, and intention to control drinking were 2.29, 4.54, 3.89, and 4.29 respectively. There were significant differences in the intention to control drinking according to grade, religion, and age of alcohol initiation. The factors influencing the intention to control drinking in nursing students were identified as self-determination (${\beta}=.24$), drinking refusal self-efficacy (${\beta}=.17$) and drinking motives (${\beta}=-.17$). This factor explained 26% of the nursing students' intention to control drinking. Conclusion: Therefore, it is necessary to develop a alcohol education program to improve the drinking culture of nursing college students and to improve their self-regulation skills in order to help them form a desirable drinking habit, and it is also necessary to apply the developed intervention program and test the effect.

• Korean Journal of Adult Nursing
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• v.20 no.4
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• pp.526-536
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• 2008

Purpose: This study examined the effect of a self-help management program which strengthens self-efficacy on the self-efficacy and the activities of daily living(ADL) in stroke patients. Methods: A quasi-experimental nonequivalent control group, pre and post design was used. The subjects consisted of 47 stroke patients. Twenty-six patients were assigned to the experimental group and 21 patients were assigned to the control group. The self-help management program by strengthen self-efficacy and general hospital care were carried out on the experimental group. General hospital care was performed on the control group. The data was collected before and 5 weeks after the program. All subjects were questioned about the self-efficacy and ADL before and after the program. Results: The scores of the self-efficacy and ADL in the experimental group were higher than those in the control group. Conclusion: The self-help management program by strengthen self-efficacy is effective in increasing the self-efficacy and ADL. Therefore this program may be a useful intervention to increase the ADL in stroke patients.

• Journal of Korean Academy of Rural Health Nursing
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• v.6 no.1
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• pp.33-43
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• 2011

Purpose: This study was done to verify the effects of a self-regulation program for management of hypertension. Method: Thirty patients with hypertension registered in a community health center were selected as the experiment group, and control group were patients in another community health center, matched for age and gender. The self-regulation program included daily blood pressure checks, periodic counseling, and health education. A self-check digital device with instructions was provided for self-monitoring of blood pressure, and the participants were interviewed before they took part in the program. Results: The first hypothesis was supported: There will be a greater reduction in both systolic and diastolic blood pressure for patients with hypertension who participate in the self-regulation program compared to patients in the control group. The second hypothesis was also supported: Patients with hypertension who participate in the self-regulation program will perform self-care activities better than those in the control group. Conclusion: The findings indicate that a self-regulation program reduces systolic and diastolic blood pressure and improves self-care in patients with hypertension. It is recommended that this self-regulation program be used in community health clinics for management of hypertension and prevention of complications.

• Journal of Korean Public Health Nursing
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• v.5 no.1
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• pp.5-22
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• 1991

This study was conducted to provide information of affective area in developing a nursing curriculum. The sample consisted of 38 sophomores and 43 seniors in Department of Nursing, College of Medicine, Han Yang University. Data were collected by using a structured questionnaire, which consisted of social, home and self control aspects in self concept. The results are summarized as follows; 1. CD In sophomore, as father's academic career were higher, the self concept In social aspects became higher. The students whose father's job was profesion and a white-collar job and who applied for nursing by force and were satisfied with their educational expenses had more positive self concept in social aspects. In senior, as their age were higher, the self concept in social aspects became higher. The students who had religion, recognized the visions of nursing, and were satisfied with their major, had more positive self concept in social aspects. In self concept in social aspects, home environment explained the major variable in sophomore. On the other side, the variable related to major was important in senior. (2) In sophomore, the students who were satisfied with educational expenses and their major had more positive self concept in home aspects. In senior, the students who counseled of their problems with their parents and recognized the visions of nursing had more positive self concept in home aspects. Counsel of their personal problem with their parents explained the most affective variable $(9.6\%)$ for self concept in home aspects in senior. But, it explained only $1.1\%$ of the variance for self concept in home aspects in sophomore. (3) In senior, the students who were unsatisfied with their educational expenses had more negative self concept in self control aspects. 2. There was no significant difference accord ing to the academic year m social, home and self control aspects. 3. The aspects with the highest positive perception of the self concept was home aspects. Self concept in social aspects was more positive perception than in self control aspects. Self concept in self control aspects was lower than in other aspects. 4. Significant relationship a revealed between social aspects and home aspects in sophomore. In senior, the positive correlation were found between social aspects and home aspects and between social aspects and self control aspects. In conclusion, the self concept m home aspects was more positive perception than in other aspects. It resulted from the fact that the nursing uniqueness was based on the spirit of humanity and service. But, when we consider social and self control aspects, good relationship between subjects and nurse is important in nursing, so it is desirable that nursing curriculum include human relationship program. Therefore. in order to strengthen positive self concept, professors and parents must pay attention to student's problems and counsel with then is required.