• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1998.03a
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• pp.127-130
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• 1998

In this paper, we propose a method of cooperative control(T-cell modeling) and selection of group behavior strategy(B-cell modeling) based on immune system in distributed autonomous robotic system(DARS). Immune system is living body's self-protection and self-maintenance system. Thus these features can be applied to decision making of optimal swarm behavior in dynamically changing environment. For the purpose of applying immune system to DARS, a robot is regarded as a B cell, each environmental condition as an antigen, a behavior strategy as an antibody and control parameter as a T-call respectively. The executing process of proposed method is as follows. When the environmental condition changes, a robot selects an appropriate behavior strategy. And its behavior strategy is stimulated and suppressed by other robot using communication. Finally much stimulated strategy is adopted as a swarm behavior strategy. This control scheme is based of clonal selection and idiotopic network hypothesis. And it is used for decision making of optimal swarm strategy. By T-cell modeling, adaptation ability of robot is enhanced in dynamic environments.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1993.06a
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• pp.887-890
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• 1993

By introducing the notion of constraint-oriented fuzzy inference, we will show that it provides us ways of fuzzy control methods that has abilities of adaptation, learning and self-organization. The basic supporting techniques behind these abilities are“hard”processing by Artificial Intelligence or traditional computational framework and“soft”processing by Neural Network or Genetic Algorithm techniques. The reason that these techniques can be incorporated to fuzzy control systems is that the notion of“constraint”itself has two fundamental properties, that is, the“modularity”property due to its declarativeness and the“logicality”property due to its two-valuedness. From the former property, the modularity property, decomposing and integrating constraints can be done easily and efficiently, which enables us to carry out the above“soft”processing. From the latter property, the logicality property, Qualitative Reasoning and Instance Generalization by Symbolic Reasoning an be carried out, thus enabling the“hard”processing.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.50 no.1
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• pp.22-30
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• 2001

This paper describes a neural network based fuzzy PID control scheme. The PID controller is being widely used in industrial applications. However, it is difficult to determine the appropriated PID gains in nonlinear systems and systems with long time delay and so on. In this paper, we re-analyzed the fuzzy controller as conventional PID controller structure, and proposed a neural network based self tuning fuzzy PID controller of which output gains were adjusted automatically. The tuning parameters of the proposed controller were determined on the basis of the conventional PID controller parameters tuning methods. Then they were adjusted by using proposed neural network learning algorithm. Proposed controller was simple in structure and computational burden was small so that on-line adaptation was easy to apply to. The experiment on the magnetic levitation system, which is known to be heavily nonlinear, showed the proposed controller's excellent performance.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1718-1719
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• 2007

In this paper, a fuzzy sliding mode control that combines with a adaptive self-regulating technique is proposed for manipulators with uncertainties. Especially the system uncertainties is approximated using fuzzy rule adaptation technique. The proposed controller is composed of the equivalent control that includes the approximation of the system uncertainties and the hitting control that is used to constrain the states of the system to maintain on the sliding surfaces and used to guarantee the system robustness. Simulation results are presented to show the effectiveness of the proposed controller

• Korean Journal of Culture and Social Issue
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• v.17 no.1
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• pp.19-49
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• 2011

In this study, multilateral conceptualizations of underemployment were measured in terms of wages, social status, skill utilization and permanence of the job, and then the effects of antecedents on underemployment and the effects of underemployment on organizational adaptation were examined. Data obtained by a longitudinally designed survey at intervals of 18 months with the reemployed(N = 153) after job loss were used. The underemployment measures include 1) the ratio of wage change 2) the ratio of status change 3) the ratio of education 4) the occurrence of change from the permanent job to temporary job, 5) overqualification - growth opportunity, 6) overqualification - mismatch. The first four measures are social-economic and objective measures and the last two measures are psychological and self-reported ones. Demographic variables(sex, age, education level, and period of unemployed), circumstantial variables(economic hardship, number of dependents), and psychological variables(job-seeking self-efficacy, depression/anxiety, latent function) are included in antecedents. In the effects of antecedents on underemployment, age increases the level of underemployment in the aspects of wage and job status. Economic hardship increases the possibility of underemployment in the aspects of education and number of dependents increases the possibility of underemployment in the aspects of job status. Job seeking self-efficacy decreases the possibility of underemployment in the overqualification - no growth. Retention of latent function during the period of unemployment lowers the possibility of underemployment in the overqualification - no growth. The level of depression and anxiety during the period of unemployment raises the possibility of underemployment in terms of education and in the overqualification - mismatch. In the effects of underemployment on organizational adaptation, the higher the level of underemployment in the aspect of education is, the lower the level of person-organization fit, emotional commitment, and job satisfaction are. And the transition from permanent job to temporary job makes emotional commitment and job satisfaction lower. No growth and mismatch exerted a significant influence on organizational adaptation generally.

• The KIPS Transactions:PartD
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• v.15D no.3
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• pp.361-374
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• 2008

In the latest intelligent computing environments, the self-adaptive software, as new software paradigm, which modifies its own behavior in response to changes in its operating environment is needed. To develop the self-adaptive software, it is necessary to analyze and design the context of software as well as the structure and the behavior of software. We need more efforts for self-adaptive software development than for traditional software development because we need more activities and technologies like context modeling and adaptation to develop the self-adaptive software. In this paper, we present the product line architecture for self-adaptive software and templates of artifacts to improve the efficiency of development through a reuse methodology. The artifacts of the architecture support the systematic reuse activities of core assets by expressing the commonality and variability of product line.

• Journal of Physiology & Pathology in Korean Medicine
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• v.27 no.2
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• pp.253-260
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• 2013

This study was focused on the relationships between menstrual history and psychological variables in middle school girls. The study included 165 students. Self image, optimism and self-efficacy are measured structured questionnaires each. Statistical analysis was performed using t-test, ANOVA and Scheffe's test. The proportion of the students with bleeding period less than 7 days was higher in the group with high self image(p=.002). The self image was higher in the group who take analgesics occasionally than the group who take daily(p=.009) and in the group with irregular menstruation(p=.024). Emotional tone was higher in the group with irregular menstruation(p=.008), and psychopathology was higher in the group who take analgesics occasionally(p=.008). Family relationship was higher in the group with bleeding period less than 7 days(p=.004), in the group who take analgesics occasionally(p=.007) and in the group with irregular menstruation(p=.015). Mastery and coping was higher in the group with bleeding period less than 7 days(p=.026). Adaptation was higher in the group with irregular menstruation(p=.034). Also optimism was higher in the group with bleeding period less than 7 days(p=.005), in the group who experienced menorrhalgia a few years after menarche(p=.014) and the group with irregular menstruation(p=.027). Self-efficacy was higher in the group of polymenorrhea(p=.029). Because menstruation is related with psychiatric factors, it is necessary to ask menstruation history and psychiatric status. This study can be used in the development of the questionnaire for the oriental medical examination.

• 한국초등상담교육학회:학술대회논문집
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• 2004.01a
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• pp.271-294
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• 2004

The purpose of this study was to examine the effects of MMTIC group counseling program on self-esteem of elementary school students. The hypothesis was that the self-esteem test scores of experimental group would be significantly higher than those of control group. The subjects were the twenty 5th graders sampled from the 66 5th graders of D Elementary School in Boryeong City based on self-esteem test scores. The 10 subjects were randomly assigned experiment group and others were assigned control group. The self-esteem test by Mun, Yong Woo (2002) modified from the measurement of Kim, Heui Hwa (1989) was administrated as pre and post test. The experimental group has experienced MMTIC group counseling program. On the other hand, the control group has not been given any advice during the counseling periods. The counseling was once a week at two o'clock in the afternoon for ten weeks from the eleventh of May to sixteenth of July in 2003. Each counseling session lasted sixty to eighty minutes. The group counseling program, which has been used in this research, has been adapted to the level of elementary students with the consideration of MBTI and MMTIC Workshop in reference to a few theses related to MMTIC development program (Jung, Gyeong Yeon, 2001: Gang, Jae Jeong, 2002; Lee, Jae Mo 2002). The results were analysed by t-test. These statistics with a quantitative result has been supplemented with a qualitative analysis by a questionnaire and the descriptions of impression of subjects of experimental group. The results of this research was that the analyses of the questionnaire and a description of their impression have shown that the counseling has had an significantly impact on their understanding themselves and others. In particular, this program has been positively conducive to receptive relationships to others. In conclusion, the MMTIC group counseling program has helped elementary students I understand themselves and others, increase receptive competence, encourage their confidence, improve personal relationships and enhance their adaptation to their school life. It suggests that this program has a feasible effect on children's sense of self-esteem.

• The Journal of the Korea Contents Association
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• v.20 no.1
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• pp.539-552
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• 2020

The purpose of this study was to examine the abuse experience of adolescents in out-of-home care on their psychosocial adjustment and the mediating effects of self-regulation skills. A survey was conducted on the adolescents who resided in the city of Busan and received out-of-home care service. The findings of the study were as follows: First, abuse experience was found to have exerted a negative influence on self-regulation skills. Second, abuse experience was found to have exerted a negative influence on psychosocial adjustment. Third, self-regulation skills were found to have exercised a positive influence on psychosocial adjustment. Fourth, self-regulation skills were found to have had a mediating effect on the relationship between abuse experience and psychosocial adjustment. The findings of this study were of significance in that neglect and emotional abuse should be prevented to promote the psychosocial adjustment of teenagers with abuse experience who are in out-of-home care, and in that the importance of the intervention of counseling programs which could foster the self-regulation skills of adolescents was urged.

• Journal of Korean Academy of Nursing
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• v.48 no.2
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• pp.208-220
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• 2018

Purpose: The aim of this study was to analyze the effects of neurofeedback training for reducing stress and enhancing self-regulation in late adolescence to identify the possibility of use for nursing intervention. Methods: A nonequivalent control group pre-post quasi-experimental design was used. Participants were 78 late adolescents assigned to the experimental group (n=39) that received the neurofeedback training and the control group (n=39). Data were collected on heart rate variability (HRV) and skin conductance level (SCL) to assess stress-biomarker response. The questionnaire contained 164 items from: Positive and Negative Affect Schedule (PANAS), Symptom Checklist-90-Revised (SCL-90-R) and Self-regulatory Ability scale. The neurofeedback training was based on the general adaptation syndrome and body-mind medicine. The intervention was conducted in a total of 10 sessions for 30 minutes per session with high-beta, theta and sensory motor rhythm training on scalp at central zero. Results: There were significant difference in standard deviation of normal to normal interval (p=.036) in HRV and SCL (p=.029) of stress-biomarker response between the two groups. Negative affect (p=.036) in PANAS and obsessive compulsive (p=.023) and depression (p<.001) in SCL-90-R were statistically significant. Self-regulation mode (p=.004) in self-regulation ability scale showed a significant difference between the two groups. Conclusion: The results indicated that the neurofeedback training is effective in stress-biomarkers, psychoemotional stress response and self-regulation. Therefore, neurofeedback training using neuroscientific approach based on brain-mind-body model can be used as an effective nursing intervention for late adolescents in clinics and communities for effective stress responses.