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신용승,정성균,강진식,김태형 서울産業大學校 2000 논문집 Vol.51 No.2
To improve fatigue properties, usually the shot peening process is used in the industrial world. In order to achieve optimum, repeatable and reliable shot peening process, the important shot peening parameters must be controlled. The first item needed to achieve high quality shot peening is to keep shot balls in a good quality. This paper discusses of shape of commonly used shot ball. Also, discussed is shot ball Shape's effect of Fatigue Life.
이승진,이석열,박형주,이철세 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
Rupture of the main bronchus followed by blunt chest trauma is relatively rare but, with increasing traffic accidents, the incidence has been increasing recently. Early diagnosis and management for the traumatic bronchial rupture is essential to reduce morbidity, mortality and late complication but often, it is comcealed in cases of blunt chest trauma and particularly it is associated with multiple other organ injuires. Especially, bronchial pseudoaneurysm which maintains airway patency after complete transection of the bronchus by blunt chest trauma is very unusual case. We report a case of a 15 year old male who had complete bronchial transection with bronchial pseudoaneurysm.The bronchial rupture was comfirmed by spiral chest CT and 3D reconstruction. In the operation, right main bronchus was completely transected and separated but the airway was patent to the right lung by pseudoaneurysm of the bronchus. Resection of the pseudoaneurysm and end to end anastomosis of the bronchus was performed successfully.
崔塡亨,柳宗賢,白承和 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-
Abstract - In This study, proposes a self-organizing QRS-wave detection algorithm for ECG using Kohonen Neural Networks and a new preprocessing algorithm for R-point detection. The implemented ECG reading system consists of a preprocessor, a SOM and a QRS-detector. The preprocessor detect R-point in the ECG. The SOM organizes training vectors into a pattern book, and the QRS-detector executes Q and S-point detection with the pattern book. Without an averaging process permits a faster operation and applying a nonlinear peak detector to a preprocessor. The self-organizing ability of SOM has proven to be a good solution for recognizing and organizing QRS-wave patterns. Moreover, The SOM prevents an loss of information such as signal distortion due to a mathematical transform. The QRS-detector based on the pattern book from the SOM executes an efficient ECG reading compared to the other methods.