• Journal of Electrical Engineering and Technology
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• v.6 no.2
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• pp.202-207
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• 2011

Numerous methodologies have been developed in an effort to reduce cogging torque. However, most of these methodologies have side effects that limit their applications. One approach is the optimization methodology that determines an optimized design variable within confined conditions. The response surface methodology (RSM) and the genetic algorithm (GA) are powerful instruments for such optimizations and are matters of common interest. However, they have some weaknesses. Generally, the RSM cannot accurately describe an object function, whereas the GA is time consuming. The current paper describes a novel GA and RSM hybrid algorithm that overcomes these limitations. The validity of the proposed algorithm was verified by three test functions. Its application was performed on a surface-mounted permanent magnet.

• Women's Health Nursing
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• v.12 no.2
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• pp.132-141
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• 2006

Purpose: The purpose of this study was to supply basic data for a health promoting program and to elevate the level of it by examining whether university students' health promoting behaviors were related to health perception, health concept, self- esteem, perceived benefits of action, perceived barriers of action, perceived self-efficacy, activity-related affect, social support, preference, prior related behavior, and a plan for action. Method: Subjects were 192 university students in K city. Data collection method was a structured questionnaire. Data was analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation, and stepwise multiple regression. Result: The most powerful predictor was previous related behavior (36%). Altogether previous related behavior, health status, a plan for action, perceived self-efficacy and number of admissions were proven to account for 57% of health promoting behaviors. Conclusion: It suggested that prior related behavior, health status, a plan for action, perceived self-efficacy, and number of admissions should be considered when developing a students' health promoting program.

• Proceedings of the KIEE Conference
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• 1999.11a
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• pp.43-51
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• 1999

The power flow calculations(PFc) are the most important and powerful tools in power systems engineering. The conventional power flow problem is solved generally with numerical methods such as Newton-Raphson(NR). The conventional numerical method generally have some convergency problem, which is sensitive to initial value, and numerical stability problem concerned with jacobian matrix inversion. This paper presents a new PFc algorithm based on the improved genetic algorithm (IGA) which can overcome the disadvantages mentioned above. The parameters of GA, with dynamical hierarchy of the coding system, are improved to make GA a practical algorithm in the problem of real system. Some case studies with test bus system also present to show the performance of proposed algorithm. The results of proposed algorithm are compared with the results of PFc obtained using a conventional NR method.

• Journal of the Korean Home Economics Association
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• v.44 no.10
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• pp.1-8
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• 2006

This study examined effects of emotional intelligence and satisfaction of school life on the social competence of institutional children. Data were collected from institutional children of 300 10-12 year old and questionnaire measures were employed. Data were analyzed by t-test, pearson's correlation and multiple regression analyses. Relationships were found between emotional intelligence and social competence as well as satisfaction of school life and social competence. Components of emotional intelligence and satisfaction of school life that predicted social competence were emotional facilitation of thinking and personal relationship between friends. Degree of personal relationship between friends was the most powerful predictor of institutional children's social competence.

• Korean Journal of Adult Nursing
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• v.18 no.4
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• pp.593-602
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• 2006

Purpose: The purposes of this study were to provide baseline data for nursing service program and to elevate the quality of service by examining whether nurses' nursing service is related to job stress, job satisfaction, organizational commitment, leadership and nursing service satisfaction in hospitals. Method: Subjects were 135 nurses and 135 patients, working and being in the hospitals in C province & D city from November. 7 to 21, 2005 and completed a structured questionnaire. The data was analyzed using descriptive statistics, t-test, ANOVA, ANCOVA, Pearson's correlation analysis, and multiple regression analysis. Results: The most powerful predictor of nursing service was leadership(60.7%). Altogether leadership, nursing service satisfaction, organizational commitment, and work stress explained 72.5% of nursing service of the nurses in hospitals. Conclusion: The results showed the nurses' nursing service in hospitals was influenced by leadership, nursing service satisfaction, organizational commitment, and job stress. It suggested that concepts of leadership, nursing service satisfaction, organizational commitment, and job stress should be considered in developing nursing services programs.

• Korean Journal of Adult Nursing
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• v.20 no.5
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• pp.719-730
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• 2008

Purpose: This study was done to identify the influencing factors of spiritual health in patients suffering from women cancers. Methods: The subjects were 130 in woman patients who were diagnosed with women cancer(breast Ca & uterine Ca) at three university hospitals and one general hospital. Data collection was conducted by using 4 questionnaires. The collected data were analyzed using frequency, percentage, t-test, ANOVA, Pearson's correlation coefficients, stepwise multiple regression. Results: Spiritual health score was middle. There were a significant correlation between spiritual health and depression, pain, fatigue and effects of religion. There were significant differences in spiritual health according to the education level, monthly income, meaning of religion or god, Frequency of attendance at worship. The most powerful predictor of spiritual health was depression(27.2%). Altogether depression, effects of religion, pain, and education level explained 46.1% of spiritual health of women cancer patients. Conclusion: It suggested that concepts of depression, effects of religion, pain, and education level should be considered in developing spiritual health promoting program for women cancer patients.

• Journal of Korean Academy of Nursing
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• v.34 no.2
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• pp.297-306
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• 2004

Purpose: This study was done to identify the relationship between social support and morale in the elderly. Method: A structured questionnaire was carried out from April, 2003 to June, 2003 on 203 elderly. The data was analyzed with a SPSS program for descriptive statistics, Pearson's correlation coefficients, t-test, ANOVA, and stepwise multiple regression was done Result: The level of social support was moderate, and family support was the highest score. In types of support, appraisal support was the highest score. The level of morale was slightly lower than moderate, and the score of social support showed significantly positive correlation with morale. In general characteristics, several variables were significantly related to social support and morale. The most powerful predictor of morale was material support by family and the variance was 19.6%. A combination of material support by family, emotional support by relatives, level of satisfaction with pocket money, perceived health, level of intimacy with one's children, and material support by friends account for 43.3% of the variance in morale of the elderly. Conclusion: To increase the morale of the elderly, it is necessary to consolidate material support by family and relatives.

• Journal of Microbiology and Biotechnology
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• v.5 no.6
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• pp.341-345
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• 1995

Seventy four microorganisms, which have antagonistic activity against to Fusarium culmorum, were tested for their inhibitory effect on colony development of obligate biotroph Erysiphe graminis f. sp. hordei Marchal, the causal agent of powdery mildew on barley plants. Of these, 13 actinomycetes isolates were shown to reduce the colony development of mildew completely by application of their 10% cell-free culture filtrates on barley leaves. An Isolate, A252, was the most powerful antagonist and its antifungal activity was further assessed. The colony development of mildew was significantly reduced by application of the 1% cell-free culture filtrate of isolate A252. In comparison to the control, the protective and curative application of 10% cell-free culture filtrate from A252 showed 88.5% and 96.1% reduction of colony numbers respectively. By the protective application, 68.3% of the inhibition was observed after 9 days of treatment, thus showed prolonged inhibitory effect. In vitro test, complete inhibition of the mycelial growth of Microdochium nivale was achieved by the treatment of 1% A252 culture filtrate and 80.2% of inhibition was observed by the 0.1% treatment.

• Journal of the Korean Society of Physical Medicine
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• v.2 no.2
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• pp.229-236
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• 2007

Clinical therapist use neurological examination to acquire the necessary information from the patients who is neurological damaged. It is necessary to have enough neurological knowledge and clinical experience to collect useful data. Neurological disease of symptom is well correspond with anatomical location and function, therefore neurological examination is one of the powerful tool to diagnosis. These tools will be a great help to clinical therapist to evaluate the patients and helps to select most pertinent treatment approach to patients. Neurological examination can classified and evaluate with Mental Status Examination, Cranial Nerves Examination, Motor and Sensory System Examination, Reflexes, Gait and Station Evaluation, Special Maneuver. Generally, various neurological examination tools are used by therapist in clinical field. Understanding of method of Neurological examination tools and understanding of result of examination from patients's response is very important. Therefore, this research will help to understand clinical meaning by neurological examination.

• Korean Journal of Child Studies
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• v.27 no.1
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• pp.167-181
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• 2006

Subjects were 2192 middle and high school students of Seoul and Kyonggi Province. Data, consisting of a self-report questionnaire, were analyzed by two-way ANOVA, univariate F-test and stepwise multiple regression. Findings were that boys showed more avoidance/distraction and active problem solving styles but less support seeking than girls. Older adolescents reported less parent attachment than younger adolescents; girls reported more mother attachment than boys. Older adolescents reported more life satisfaction than younger adolescents; girls reported more life satisfaction than boys. A higher degree of life satisfaction was reported by subjects with more parent attachment, more active problem solving and less avoidance/distraction styles, by younger adolescents, and by girls. Degree of parent attachment was the most powerful predictor of adolescents' satisfaction with life.