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안태훈,김준식,정병용,Ahn, Tae-Hoon,Kim, Jun-Sik,Jeong, Byung-Yong 대한인간공학회 2006 大韓人間工學會誌 Vol.25 No.3
This paper summarizes the ergonomic risk assessment of hotel chef. The cooking operations were observed in order to determine sources of ergonomic stress and make recommendations to reduce the risk of work-related musculoskeletal disorders in Korean, Japanese, and western style cooking. We used interviews, document analysis, video analysis, and risk assessment to identify and quantify ergonomic risk factors. The results indicate that the cooking operations have some ergonomic problems. These findings identified in this study can be used to reduce the risk of work-related musculoskeletal disorders in food service areas.
안태훈(Tae Hoon Ahn),유진목(Zin Mock Yoo),인광호(Kwang Ho In),강경호(Kyung Ho Kang),유세화(Se Hwa Yoo) 대한내과학회 1988 대한내과학회지 Vol.35 No.5
N/A The vital capacity(VC) consists of 2 subcomponentsinspiratory capacity(IC) and expiratory reserve volume(ERV). Each component can be measured by the accumulation of tidal breaths using a one-way valve in an external circuit. By changing the direction of the valve, IC and ERV can be measured separately. To test the validity of this method, we compared the VC measured with the standard method to the breath stacked estimate in 22 normal controls and 18 cooperative patients who had diverse causes of respiratory impairment. The results obtained were summarized as follows: 1) There was no statistically significant difference in VC measured with the standard method and involuntary breath stacking in both groups. 2) There was a good correlation between VC with the standard method and VC with involuntary breath stacking in controls and patients (r=0,91 and r=0.98, respectively), 3) The coefficient of variation by 3 repetitive measurements was less than 5%. In conclusion, vital capacity measurement with involuntary breath stacking is comparable to the standard method and this procedure may be applicable to uncooperative patients or patients with impaired consciousness.
수신기 다양성과 일정 오경보 확률 방법을 쓴 부호획득: 2. 벼균질 감쇄 환경
권형문,강현구,박주호,안태훈,이성로,송익호,Kwon Hyoung-Moon,Kang Hyun-Gu,Park Ju-Ho,Ahn Tae-Hoon,Lee Sung-Ro,Song Iick-Ho 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.7C
이 논문의 1부에 이어, 수신안테나 다양성을 쓰는 직접수열 부호분할 다중접속(direct-sequence code division multiple access: DS/CDMA) 시스템에서 의사잡음(pseudonoise: PN) 부호를 획득할 때 평균값(cell average: CA), 큰값(greatest of: GO), 작은값(smallest of: SO) 일정 오경보 확률(constant false alarm rate: CFAR) 처리기의 성능 특성을 비균질 (nonhomogeneous) 잡음 환경에서 얻고 견주어 본다. 균질 잡음 환경에서와는 다르게, 비균질 잡음 환경에서는 큰값 일정 오경보 확률 처리기가 가장 성능이 좋고, 평균값 일정 오경보 확률 처리기가 그 다음으로 성능이 좋다는 것을 볼 수 있다. As a sequel to Part 1, the performance characteristics of the cell averaging (CA), greatest of (GO), and smallest of (SO) constant false alarm rate (CFAR) processors in nonhomogeneous environment are obtained and compared when receiving antenna diversity is employed in the pseudonoise (PN) code acquisition of direct-sequence code division multiple access (DS/CDMA) systems. Unlike in homogeneous environment, the GO CFAR processor is observed to exhibit the best performance in nonhomogeneous environment, with the CA CFAR processor performing the second best.
현진해(Jin Hai Hyun),안태훈(Tae Hoon Ahn),류승관(Seung Kwan Ryu),김종웅(Jong Woong Kim),강동훈(Dong Hoon Kang) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.3
The possibility of colon cancer generating on the mucosa affected with tuberculosis has been suggested, althongh the pathogenesis of colon cancer is known to be different from that of tubercu- lous colitis. %Ve report a very rare and interesting case of colon cancer associated with tubercu]ous colitis that is considered by colonofiberscopy and postoperative specimen.
기관내삽관과 기관절개술을 시행한 환자에서의 폐흡인에 관한 연구
인광호(Kwang Ho In),안태훈(Tae Hoon Ahn),유진목(Zin Moc Yu),강경호(Kyung Ho Kang),유세화(Se Hwa Yoo) 대한내과학회 1988 대한내과학회지 Vol.35 No.3
N/A Aspiration is a well recognized source of pulmonary infection. In most clinical situations, however, the actual incidence of aspiration has not been well documented, We investigated the incidence of pulmonary aspiration and the factors affecting aspiration in patients with intubation and tracheostomy. Aspiration was evaluated by applying Evans blue dye to the posterior tongue just after each formula tube feeding for 24 hours. Bluish discoloration and elevated glucose concentration of the material suctioned from the artificial airway were regarded as evidence of aspiration. The results obtained were as follows: 1) The incidence of pulmonary aspiration in patients with intubation or tracheostomy was high (69%), 2) Unconscious patients tended to aspirate frequently, but the presence or absence of ventilatory support, tracheostomy or intubation did not play a significant role in the development of aspiration. 3) There was only a weak correlation between the Evans blue dye test and the glucose oxidase reagent strip method in detecting pulnonary aspiration. In conclusion, the incidence of pulmonary aspiration in patients with intubation and tracheostomy is very high. These findings suggest that even in the case of intubation and tracheostomy, careful observation of pulmonary aspiration is necessary
심완주(Wan Joo Shim),안태훈(Tae Hoon Ahn),김영훈(Young Hoon Kim),노영무(Young Moo Ro) 대한내과학회 1991 대한내과학회지 Vol.41 No.6
N/A To assess changes of left ventricular size and function after acute myocardial infarction, 15 patients with acute myocardial infarction were studied by 2-D echocardiogram. The left ventricular volume and extent of regional wall motion abnormality were calculated using measurements from the 2-D echocardiogram at entry and at 7 days and 2 months after acute myocardial infarction. The left ventricular volume increased from 124+40ml at entry to 143+24ml at 2 months after acute myocardial infarction in 5 patients (33.3%). The location of the infarction was the anterior wall in all of these 5 patients, who had a greater infarct area than those who had normal left ventricular volume at 2 months (p=0.07). The timing of the left ventricular dilatation after acute myocardial infarction was different in each of these 5 patients. The rest of the 10 patients (66.7%) exhibited either no change of a decrease in left ventricular volume. The wall motion score decreased from 6.2+2.9 at entry to 5.2+2.8 at 2 months (p<0.05) with no con-comitent improvement of gloval left ventricular function. No relation was demonstrated between the ejection fraction at entry and the left ventricular dilation at 2 months, Thus, left ventricular dilation after acute myocardial infarction occurs mainly in anterior wall infarction and is related to the extent of the infarct area at entry. Initial left ventricular function (ejection fraction) does not predict left ventricular dilatation 2 months after acute myocardial infarction.