• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.11a
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• pp.635-636
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• 2008

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2003.05a
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• pp.329-337
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• 2003

Stock market prediction is regarded as a challenging task of financial time-series prediction. There have been many studies using artificial neural networks in this area. Recently, support vector machines (SVMs) are regarded as promising methods for the prediction of financial time-series because they me a risk function consisting the empirical ewer and a regularized term which is derived from the structural risk minimization principle. In this study, I apply SVM to predicting the Korea Composite Stock Price Index (KOSPI). In addition, this study examines the feasibility of applying SVM in financial forecasting by comparing it with back-propagation neural networks and case-based reasoning. The experimental results show that SVM provides a promising alternative to stock market prediction.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.6
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• pp.1889-1893
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• 2008

This paper explores the classification performance of applying to support vector machines (SVMs) for the image classification problems. In this study, we extract the color, texture and shape features of natural images and compare the performance of image classification using each individual feature and integrated features. The experiment results show that classification accuracy on the basis of color feature is better than that based on texture and shape features and the results of the integrating features also provides a better and more robust performance than individual feature. In additions, we show that the proposed classifier of SVM based approach outperforms BPNN to corporate the image classification problems.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.6 no.1
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• pp.114-129
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• 1999

The purpose of this study was to use phenomenological perspectives to identify the meaning and structure of the exercise experiences in patients with low back pain. The participants were 20 patients who live in one city. The patients were asked to describe their exercise experiences. With permission of the subjects, the interviews were recorded and transcribed. Colaizzi's method was used for the phenomenological analysis. The investigator analysed the data to identify and categorize themes and basic structural elements. The process of the exercise experiences in patients with low back pain has three proposed phases pre-exercise phase, exercise phase, post-exercise phase. 150 formulating meanings, 54 themes, 20 theme clusters were identified. The interview data were organized by theme clusters into 9 categories : 'difficulties with activities of Daily Living', 'Psychological Distress', 'Support', 'Effectiveness after Exercise', 'Confidence of Healing', 'Importance of Exercise', 'Exorcise Self-Efficacy', 'Control', and 'Barrier'. Since the importance of exercise and exercise self-efficacy were identified as significant factors in this study, it may be important to plan nursing interventions to assist clients to realize the exercise self-efficacy and importance of exercise. Also, continuous support from health professionals, family, and experienced persons are needed. Further strategies for reducing barriers should be devised.

• The Journal of Korean Society for School & Community Health Education
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• v.21 no.2
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• pp.1-14
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• 2020

Objectives: The purpose of this study was to identify factors(perceived health and social support) affecting social capital formation of the elderly. Methods: Samples consisted of 184 people aged over 65 years old in one county of Kyungsangbukdo. Data were analyzed with t-test, ANOVA and regression analysis. Results: First, social support(both emotional support and instrumental support) were significantly different by economic status. Secondly, regression analysis showed that perceived health affected a positive influence on social capital in Model1, which analyzed only perceived health. However, Model2, which analyzed perceived health and social support(emotional support, instrumental support) at the same time, showed that only instrumental support affected social capital formation. Conclusions: It was suggested to develop customized health promotion and job creation are required for social capital formation of the elderly.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.277-280
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• 1998

As user's demands for high-speed data traffic are recently increased, ABR services are considered as one of important service requirements in ATM networks. Unfortunately, a number of existing ATM switching systems have structural drawbacks as to support ABR services because these switching systems have been developed to support realtime(rt) services such as CBR and rt-VBR services. To support ABR services in the existing ATM switching systems, new traffic control mechanisms for ABR services are required. This paper proposes a method for supporting ABR services in ATM swithcing systems without back-pressure mechanisms and evaluates the performance of the proposed method using simulation.

• Korean Journal of Adult Nursing
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• v.25 no.6
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• pp.597-609
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• 2013

Purpose: This study was to explore work experience among nurses with low back pain. Specific aims were to identify problems nurses face as workers at a hospital and how they interact with other workers. Methods: Grounded theory methodology was utilized. Data were collected from iterative fieldwork with individual in-depth interviews from 9 nurses with low back pain as key informants, and a head nurse and a charge nurse who had experiences working with nurses with low back pain as general informants. Results: Through constant comparative analysis, a core category emerged as "to make one's own ground". The process of "to make one's own ground" was identified as four categories: perception of limitations, intervening conditions, balancing limitations, and controlling limitations. Intervening conditions were identified as 'working conditions' and 'personal traits'. Conclusion: Findings of the study indicate that there is a need for health professionals and administrators to understand limitations to working experience among nurses with low back pain. In addition, institutional and psychological support program is needed to improve an adaptation to working environment among nurses with low back pain.

• Journal of Korean Academy of Nursing
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• v.36 no.3
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• pp.439-448
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• 2006

Purpose: The purpose of this study was to show a relationship between health perception and health promoting behaviors in chronic low back pain patients. Method: The subjects for this study were 213 persons who the visited hospital with low back pain-related problems. Results: The higher the level of the health perception in chronic back pain patients was the higher the rate of the practice of health promoting behaviors (r=0.393, p<.001). The health perception T score was $50.00{\pm}10.00$. As for health promoting behaviors, the T score was $49.99{\pm}10.00$. The subscale of the highest mean score was interpersonal support $(2.96{\pm}0.64)$ and the subscale of the lowest mean score was exercise $(2.13{\pm}0.99)$. Conclusion: This study showed that chronic low back pain patients had a lower level of perception of their health, and their practice to improve their health was not enough. Therefore, nurses should educate and encourage chronic low back pain patients in proper exercises and correct posture to strengthen and maintain lumbar extension muscle power.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.23 no.2
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• pp.9-16
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• 2017

Background: The purpose of this study was to investigate the relationship between the spine and the flat-foot, the stability and the alignment of the posture of the neck to prevent the alignment of the ankle joint operation and the lower back flexibility of the lumbar region according to the type of treatment using active stretching of the triceps, back pain, and to see how they affect weight bearing differences. Methods: The subjects of this study were 24 chronic low back pain patients. They were randomly divided into experimental group and control group. In the experimental group, ankle joint mobilization and active scraping of triceps were performed three times a week for a total of 6 weeks. The control group was performed in the same way without articulation. The range of flexion and extension motion of the lumbar spine and pain degree and difference of weight-bearing were measured before and after the experiment. Results: The model of ankle joint mobilization and calf muscle elongation of flat foot significantly improved the range of flexion and extension motion of the vertebrae (p<.05) and the VAS and distribution of weight-bearing were decreased in both of two groups (p<.05). In other words, the exercise and mobilization help to recover of the balance of the whole musculoskeletal, the vertebrae. Conclusions: The active exercise of the triceps muscle of the lower leg in this study It affects the flexibility of the lumbar spine, the pain and the difference in the weight support of the lower extremities, when we performed ankle joint mobilization for exercise and cramping, pain and the difference in weight support between the two lower limbs.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.11
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• pp.4751-4755
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• 2011

This study investigates the plastic suspension assembly which is installed on inside of vehicle seat and support passenger's back to supply the comfortable ride performance. It aims to develop the structural design in order to support driver's back uniformly and assemble seat back frame with plastic suspension effectively. The part of suspension is designed by considering the body pressure distribution of driver and it has the same size as the practical model on simulation analysis. It is confirmed that the analysis result of plastic suspension approaches the practical measured values and the better body pressure distribution can be obtained as compared with the existing wire type.