1.The development of a decision support system for diagnosing nasal allergy.
Young Moon CHAE ; Tae Young JANG ; In Yong PARK ; Seung Kyu CHUNG ; Mignon PARK
Yonsei Medical Journal 1992;33(1):72-80
This paper deals with the problem of improving the capability of the medical decision support system (MDSS) for diagnosing nasal allergy by integrating the previously developed expert system with the neural network approach. Three knowledge acquisition methods were used to develop the expert system: statistical, rule-based, and the combined approach. Among the three, a combined approach showed the best prediction rate based on discriminant analysis. Using the results of a combined approach as input values, the neural network was developed using back-propagation method. Unlike the expert system, the neural network system provides the resulting allergy status in probabilistic terms. Managerial as well as legal issues were also discussed in this paper.
*Decision Support Techniques
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Hay Fever/*diagnosis
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Human
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Rhinitis, Allergic, Perennial/*diagnosis
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Support, Non-U.S. Gov't
2.Evaluation of a Bio-impedance Method for Measuring Human Arm Movement.
Jong Chan KIM ; Soo Chan KIM ; Ki Chang NAM ; Seon Hui AHN ; Mignon PARK ; Deok Won KIM
Yonsei Medical Journal 2002;43(5):637-643
This study proposes a new method for measuring upper limb movement using a bio-impedance technique. Bio-impedance and joint angle were simultaneously measured during the wrist and elbow movements of 12 normal subjects. The joint angles of the wrist and elbow were estimated by measuring the bio-impedances of the forearm and upper arm, respectively. Although the measured bio-impedances on upper limbs varied among individuals, changes in the bio-impedances and joint angles of the wrist and elbow during their extension and flexion were very highly correlated, having correlation coefficients of 0.96 +/- 0.04 and -0.98 +/- 0.02, respectively. The reproducibilities of wrist and elbow bio-impedance changes were 2.1 +/- 1.0% and 1.8 +/- 1.0%, respectively. Since the proposed method is not restricted by size or the duration of measurements, it is expected to be useful for the analysis of athletic movement.
Elbow/*physiology
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Electric Impedance
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Human
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Movement
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Reproducibility of Results
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Wrist/*physiology