• Journal of Korean Academy of Nursing
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• v.33 no.3
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• pp.440-450
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• 2003

Purpose: This study was conducted to examine the effects of solution-focused group counseling on the general stress, stress response and coping in the delinquent juveniles. Method: The subjects consisted of a convenience samlple of 60 delinquent juveniles who had been placed under probation in Kwang-ju, and recruited from Oct., 2000 to Dec., 2000. Solution-focused group counseling was conducted for the experimental group once a week for 120 to 180 minutes for 6 week. The control group received no group session. For both groups the level of general stress, stress response and coping were measured before and after the experiment. Result: General stress significantly decreased in the experimental group and increased in the control group, but showed no significant difference between the two groups. Stress response decreased significantly in the experimental group and increased in the control group, but showed no significant difference between the two groups. The problem-focused coping significantly increased in the experimental group and decreased in the control group, and showed a significant difference between the two groups. The emotion-focused coping significantly decreased in the experimental group and increased in the control group, and showed no significant difference between the two groups. Conclusion: This study showed that solution-focused group-counselling has a positive effect on variables like the general stress, stress response, emotion-focused coping and problem-focused coping. Further study needs to be conducted to verify results.

• Journal of Korean Academy of Nursing
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• v.35 no.8
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• pp.1485-1492
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• 2005

Purpose. The present study aims to verify the effectiveness of the reality therapy for patients with schizophrenia. Methods. It is designed as a quasi-experimental study by which a nonequivalent control group pretest-posttest is conducted. The test was conducted with 30 patients with schizophrenia who were hospitalized at a mental hospital in South Korea. Fifteen of the patients participated in the reality therapy program while another 15 in the control group. The effects are measured by marking scores in the areas of the locus of control, self-esteem, and problem-focused stress coping of each participant. Results. The general characteristics and dependent variables related to outcome variables were controlled to be equal between the two groups. It turns out that the internal locus of control, self-esteem, and problem-focused stress coping are statistically significant. Conclusion. Findings show that the reality therapy caused positive changes in terms of the internal locus of control, self-esteem, and problem-focused stress coping of the observed schizophrenic patients.

• The Korean Journal of Elementary Counseling
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• v.7 no.1
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• pp.67-90
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• 2008

The purpose of this study was to examine the effects of solution focused group counseling program on peer relationship and school life adaption of elementary school children. The subjects in this study were the 4th graders at S Elementary School in Ansan, Gyeonggi-do. 20 students were selected through the preliminary test of peer relationship and school life adaption, that is to say, each 10 students of experimental group and control group. A solution focused group counseling program was provided by researcher to the experimental group in six sessions once or twice a week, 60 minutes each. but control group was not conducted for any program. In verifying of the program effects in this study, KOREAN SPSS/WIN(version 12.0) is used for statistical analysis. The major findings of this study are as follows: First, solution focused group counseling program has a positive effect on all parts of sub-factors of peer relationship except to union life between friends. Second, solution focused group counseling program has a effect on the school life adaption of elementary and its all parts of sub-factors except to school rules. As noted above, it is proved that solution focused group counseling program has a positive effect to improve parts of sub-factors of peer relationship and school life adaption. Accordingly, it is necessary to feel satisfaction and Qualitative improvement in peer relationship and help school life adaptation of elementary school children through solution focused group counseling program.

• Journal of Korean Academy of Nursing
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• v.34 no.7
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• pp.1155-1163
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• 2004

Purpose: This study was designed to examine the effects of a solution-focused group counseling program on the family burden, active coping, expressed emotion, and family support in schizophrenic patients and their families. Method: The subjects consisted of 48 schizophrenic patients and 56 families. Twenty-four schizophrenic patients and 28 families were assigned to both the experimental and control groups. The solution-focused group counseling program was conducted for the families of the experimental group, but not for the control group or the patients of the experimental group. Result: There was a significant greater decrease in scores of family burden and expressed emotion in the experimental groups than the control groups. There was a larger increase in active coping scores in the experimental groups than the control groups, but it was not significant. There was no significant difference between the two groups in family support scores. Conclusion: This program may be an effective nursing intervention program for families with schizophrenic members.

• Journal of Korean Academy of Nursing
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• v.30 no.3
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• pp.791-798
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• 2000

The hemodialysis patients with chronic renal disease have experienced negative emotions, especially depression among with physical, social, and psychological changes. Based upon a stress-coping theory, group imago psychotherapy which can induce effective coping through self awareness and positive emotional responses is implemented to the hemodialysis patients. The effects of the imago psychotherapy in regards to comfort and depression are studied here. Group imago psychotherapy was performed on forty-three subjects(twenty subjects in the experimental group and twenty-three subjects in the control group). The results of the study were as follows. After being given group imago psychotherapy, the comfort scores of the experimental group were significantly higher than those of the control group (F=15.33, p= .003). Moreover, after being given treatment, the depression scores of the experimental group were significantly lower than those of the control group (F=9.14. p=.0044). Specifically, the scores on comfort in the experimental group under emotion-focused coping style were significantly higher than those of the control group (F=18.59, p= .0002). The mean difference on comfort scores in the experimental group under problem - focused coping style was higher than that of the control group. But their scores were not significant (F=0.19, p= .6729). The scores on depression in the experimental group under emotion-focused coping style were significantly lower than those of the control group (F=14.62, p= .0006). The mean difference on depression scores in the experimental group under problem - focused coping style was much lower than that of the control group. But their scores were not significant (F=0.31, p=.5947). There was a significant positive correlation between comfort and depression variables. After group imago psychotherapy the hemodialysis patients recognized positive changes in emotional reponses, self awareness, self control, ease of mind, and felt overall more relaxed. Imago psychotherapy is a nursing intervention which as this study has shown can improve to comfort. The results of this study can be applied to general nursing practices. In the view of holistic nursing, the development of the nursing practice combined with imago psychotherapy will contribute to the enlargement of the nursing field with conventional nursing practices.

• Journal of Institute of Control, Robotics and Systems
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• v.10 no.12
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• pp.1137-1147
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• 2004

In this paper, we proposed two types of adaptive control mechanism which is named HIA(Humoral Immune Algorithm) PID and CMIA(Cell-Mediated Immune Algorithm) controller based on biological immune system under engineering point of view. The HIA PID which has real time control scheme is focused on the humoral immunity and the latter which has the self-tuning mechanism is focused on the T-cell regulated immune response. To verify the performance of the proposed controller, some experiments for the control of AGV which is used for the port automation to carry container without human are performed. The experimental results for the control of steering and speed of an AGV system illustrate the effectiveness of the proposed control scheme. Moreover, in that results, proposed controllers have better performance than other conventional PID controller and intelligent control method which is the NN(neural network) PID controller.

• Journal of Industrial Convergence
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• v.6 no.1
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• pp.17-33
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• 2008

The purpose of this study is to examine what sort of causes have the effect on the coping behavior of the unemployed against their job loss. For the purpose of the study, following independent variables have been selected, locus of control, self-efficacy and autotelic personality. As dependent variables, two types of coping behaviors of individual have been used, problem-focused coping strategies and symptom-focused coping strategies. To test the hypotheses, structural equation modeling was employed. The model showed adequate fit to the data. The results of structural equation modeling exhibit that internal locus of control, self-efficacy and autotelic personality were positively related problem-focused coping strategies. And self-efficacy was negatively related to symptom-focused coping strategies. Implications are discussed and future research directions are outlined.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.11a
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• pp.506-509
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• 2006

Shaped Sound Focusing is defined as the generation of acoustically bright shape in space using multiple sources. The acoustically bright shape is a spatially focused region with relatively high acoustic potential energy level. In view of the energy transfer, acoustical focusing is essential because acoustic energy is very small to use other type of energy. Practically, focused sound shape control not a point is meaningful because there are so many needs to enlarge the focal region especially in clinical uses and others. If focused sound shape can be controlled, it offers various kinds of solutions for clinical uses and others because a regional focusing is essentially needed to reduce a treatment time and enhance the performance of transducers. For making the shaped-sound field, control variables, such as a number of sources, excitation frequency, source positioning, etc., should be taken according to geometrical sound shape. To verify these relations between them, wavenumber domain matching method is suggested because wavenumber spectrum can provide the information of control variables of sources. In this paper, the procedures of shaped sound focusing using wavenumber domain matching and relations between control variables and geometrical sound shape are covered in case of an acoustical ring.

• Journal of the Korean Society of School Health
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• v.17 no.2
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• pp.73-83
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• 2004

Purpose: This study was designed to examine the effects of solution-focused group counseling on the school attitude, self-esteem and hope in school maladjusted adolescents. Methods: The research design of this study was a non-equivalent control group pre-post test design. Thirty middle school students referred to a community mental health center in G city for school maladjustment from a school and welfare center were assigned to the experimental group and thirty middle school students in care for school maladjustment at a welfare center were assigned to the control group. The solution-focused group counseling for the experimental group was conducted once a week for 90 minutes during 6 weeks. The data were collected from December 10, 2003 to May 23, 2004. The data was analyzed by x2-test, t-test and paired t-test using the SAS program. Results: 1) School attitude increased significantly after solution-focused group counseling (t=6.036 p=.001). 2) Self-esteem increased significantly after solution focused group counseling (t=2.705, p=.010). 3) Hope increased significantly after solution-focused group counseling (t=3.671, p=.001). Conclusion: Solution-focused group counseling appears to be a very effective intervention for school maladjusted adolescents by increasing self-esteem, positive school attitude, hope and coping with problems.

• Journal of Korea Multimedia Society
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• v.25 no.8
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• pp.1022-1037
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• 2022

It is important to develop a transducer that generates uniform output power through frequency control of the HIFU at 4 MHz frequency for the high intensity focused ultrasound (HIFU) skin diseases treatment. In this paper, a 4 MHz frequency band HIFU system for skin disease treatment was designed, manufactured and developed. In HIFU, even for the ultrasonic vibrator in the 4 MHz frequency band, the characteristics of the output power of the HIFU are different depending on the difference in the thickness of the PZT material. Through the development of a system amplifier, the sound output of the HIFU transducer was improved to more than 48 W and uniform output power control was possible. And, it is possible to control the output power even in a frequency band of 4.0 to 4.7 MHz, which is wider than 4.0 MHz, and shows the resonance frequency of the transducer. The maximum output power for each frequency was 49.969 W and the minimum value was 48.018 W. The maximum output power compared to the minimum output power is 49.969 W, which is uniform within 4.1%. It was confirmed that the output power of the HIFU through the amplifier can be uniformly controlled in the 4 MHz frequency band.