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김태경,한성호,유기동,Kim, Tae-Gyeong,Han, Seong-Ho,Yu, Gi-Dong 대한인간공학회 2003 大韓人間工學會誌 Vol.22 No.4
PDAs(Personal Digital Assistants), one of the typical mobile devices, are examined in this study to identify the factors affecting their usability. This study focuses on the menu design of PDAs. Three factors including menu extension method, menu structure, and screen orientation were manipulated in a usability experiment. Task completion times, error rates, and degree of subjective satisfaction were measured. Guidelines for designing a PDA menu are proposed based on the experimental results.
만성 폐쇄성 폐질환 환자에 대한 Radioaerosol Lung Scan의 임상적 평가
권순석 ( Kwon Sun Seog ),유기동 ( Yu Gi Dong ),김영균 ( Kim Yeong Gyun ),김관형 ( Kim Gwan Hyeong ),한기돈 ( Han Gi Don ),문화식 ( Mun Hwa Sig ),송정섭 ( Song Jeong Seob ),박성학 ( Park Seong Hag ) 대한내과학회 1992 대한내과학회지 Vol.42 No.5
Background: In the management of chronic obstructive pulmonary disease, it is important to distinguish the two main types of this disorders, namely, the emphysematous and bronchitic. Patients with bronchitis respond much more favorably to medical treatment than do those with emphysema. With the advent of radioaerosol inhalation scan, it became apparent that this procedure might be helpful in identifying regions with obstructed airways in such patient. We studied to estimate the value of radioaerosol inhalation Scan in the classificaiton of patients with chronic obstructive pulmonary disease (COPD). Method: We observed the patterns of ventilation distribution by using ^(99m)Tc-phytate radioaerosol scan and relationships to pulmonary function test, arterial blood gas analysis in 22 emphysematous patients and 13 chronic bronchitic patients. Results: The deposition of radioaerosol inhalation Scan disclosed a dendritic appearance in bronchitic ptients, but in emphysematous patients disclosed a random patchy appearance. Central deposition and peripheral uneven distribution of radioaerosol inhalation Scan were prominent in emphysematous patients than bronchitic patients (p<0.01). Peripheral uneven distribution of radioaerosol inhalation scan in emphysematous patients were correlated with FVC and FEV, (r=.0.651, r=-0.781, p<0.01). Conclusion: Our data suggest that radioaerosol inhalation Scan may be useful tests for the diagnosis and the classification of chronic obstructive pulmonary disease.