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가진력 규명을 통한 초고압 변압기의 구조진동 및 방사소음 예측
유석진(Yoo, Suk-Jin),정병규(Jung, Byung-Kyoo),정의봉(Jeong, Weui-Bong),홍진숙(Hong, Chinsuk),김태용(Kim, Tae-Yong) 한국소음진동공학회 2013 한국소음진동공학회 논문집 Vol.23 No.6
In order to predict structural vibration and radiated noise of high-voltage transformer in operation, it is necessary to precisely find the excitation force generated by the coils and core. However, finding the excitation force through experiments of high voltage transformer in operation is not possible. Therefore, this paper deals with identifying the excitation force by using the acceleration data measured through experiments and the transfer function estimated through finite element model. A method to predict structural vibration and radiated noise was also proposed. Three-phase windings and the core are the source of high-voltage transformer. The excitation forces were identified using the acceleration data and the transfer function of the surface of the tank. Structural vibration and radiated noise from the surface of the tank was predicted by using the identified excitation force. As a result of the interpretation of the experimental and computational analysis of structural vibration from the surface of the tank and radiated noise from the field point, the interpretation of the computational analysis showed relatively good accordance with the experiment.
리더십 유형이 핸드볼 선수들의 스포츠 자신감에 미치는 영향
유석진 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1
This study was designed to analyze the effect of leadership style, sport self-confidence on handball players. Subject were consisted of 161 players who were sampled handball players. Questionnaire to use this study is composed total 75 questions that 5 questions for basis variable, 40 questions to measure for Leadership style that developed by Chelladurai and Saleh(1980, 15 questions for sport self-confidence. To analyze withdraw, after removed questionnaire endiligent, to use ANOVA and Multiple Regression in Window SPSS 8.0. The results of the study were as follows : 1. The result about Leadership style, sport-confidence in basis variable ; 1-1. In leadership style, male players were shown higher values than female players in totally and All of them were shown favorable in training and instruction behavior. Players in university team were shown favorable in training and instruction behavior and players in cooperates amateur team were shown favorable in positive feedback behavior. 1-2. In sport self-confidence, male players were shown higher values than female players in all of sport self-confidence. This is agreement with opinion of investigator(Weinberg, Gould, Yukelson & Jackson, 1981) that insist for existence of sex role stereotype. 2. The result about leadership style had an effect on sport self-confidence ; 2-1. Positive feedback behavior was shown higher in trait sport self-confidence and training and instruction behavior was shown higher state sport self-confidence. 2-2. Traing and instruction had an positive effect on perceived team performance.
인슈린分沁腫瘍(Insulinoma)에 起因된 痙攣發作症의 1例
鄭英照,兪碩鎭 인제대학교 1980 仁濟醫學 Vol.1 No.2
本例와 같이 그 發生頻度가 흔치않은 ?臟의 insulinoma에 起因된 痙攣發作症의 경우에 있어선 자칫 잘못하면 原發性 癎疾로 誤診되기 쉬운 點이 많다. 그러나 本例는 보다 細密한 問診을 通한 病歷調査와 그에 뒤따르는 適切한 諸般檢査의 結果를 綜合함으로서 意外로 손쉽게 誤診을 最少限으로 줄일수도 있을뿐 아니라 背景原因인 ?臟의 腫瘍에 對한 局所診斷까지도 할 수 있었으며, 手術的인 原因療法을 받게 해 줌으로서 根本的으로 完治시킬 수도 있어 흥미있는 臨床硏究의 對象이 될것으로 보고 白病院 精神科에서 治驗한 인슈린分泌腫瘍에 起因된 痙攣發作症의 1例를 文獻考察과 더불어 報告하는 바이다. The authors reported a case of epileptiform seizure caused by hypoglycemia due to insulinoma in a 50 year old married Korean woman. Epileptiform seizure secondary due to hypoglycemia cannot be easily differentiated from idiopathic epilepsy with only E.E.G. finding. The authors made a careful study of the various causes of seizure disorders in this patient and was able to find the characteristic findings of insulinoma in physical examinations and laboratory & X-Ray studies. By enucleation of insulinoma, a favorable result was obtained. In follow up study for 3 years up to now, there was much improvement in physical and mental states and social adjustment and no seizure was found yet.