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응급의학과 전문의 총조사 자료를 이용한 응급의학과 의사의 남녀 차이
배경수 ( Kyung Su Bae ),박경혜 ( Kyung Hye Park ),강지훈 ( Ji Hun Kang ),기동훈 ( Donghune Key ),김인병 ( In Byung Kim ),김홍재 ( Hong-jae Kim ),박송이 ( Song Yi Park ),서범석 ( Beom Sok Seo ),여인환 ( In Hwan Yeo ),윤유상 ( Yoo S 대한응급의학회 2022 대한응급의학회지 Vol.33 No.4
Objective: In this study, we compared differences based on the gender of Korean emergency physicians to provide basic data for future emergency medicine development plans. Methods: We used data from the emergency physician survey (2020) conducted by the Korean Society of Emergency Medicine. A total of 1,303 emergency physicians responded to the survey. We adjusted demographic data relating to age, position, and work duration as an emergency physician, which could affect the differences based on gender. After propensity score matching, we compared working hours, work burden, income, motives for applying for emergency medicine, and future plans of the emergency physicians by sex. Results: The total working hours per month and night shifts per month were higher in men compared to the women. The women felt more pressure in the following areas: number of emergency patients, relationships with administrative agencies, insufficient emergency medical technician manpower, patients’ compliance, and relationships with other emergency physicians. Monthly income was higher in men. Women placed a higher value on ‘Acquiring a range of knowledge’ and ‘Degree of interest in working in the emergency room’ than men as motivation for applying for positions in emergency medicine. Regarding future plans, women placed less value on income and more on having enough free time and avoiding burnout. The retirement age was about 3 years lower for women than for men. Conclusion: This study revealed gender differences in working hours, income, motivation for applying for emergency medicine, work burden, and future plans. It is expected that these differences are caused by physical limitations and socio-cultural backgrounds. It is recommended that more detailed investigations be carried out through qualitative research. These results could help in gender considerations while hiring emergency physicians.
뉴튼 및 비뉴튼 유체의 slim-hole 환형관내 유동에 관한 연구
우남섭(Nam-Sub Woo),배경수(Kyung-Su Bae),서병택(Byung-Taek Seo),황영규(Young-Kyu Hwang) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The present study concerns an experimental study of fully developed laminar flows of Newtonian and non-Newtonian fluids through a slim hole annulus, in combination with an axial flow and inner cylinder rotation. The study is motivated by a need to understand the flow of drilling fluids in oil wells. Pressure losses and skin friction coefficients have been measured for the flows of water and power-law fluids (CMC and bentonite solutions) at the rotational speed of inner cylinder in 0~500 rpm. Main calculation parameters are rheological property of working fluid, flow rate, and radius ratio of the inner and outer cylinders. This study shows the fundamental difference of flow pattern between Newtonian and non-Newtonian fluid in slim hole annuli.
우남섭(Nam-Sub Woo),서병택(Byung-Taek Seo),배경수(Kyung-Su Bae),황영규(Young-Kyu Hwang) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
The present study concerns a experimental study of fully developed laminar flow of a Newtonian and non-Newtonian fluid through a concentric annulus with a combined bulk axial flow and inner cylinder rotation for the various radius ratio. This study shows the fundamental difference between Newtonian and non-Newtonian fluid flow in an annulus for various radius ratio.
우남섭(Nam-Sub Woo),서병택(Byung-Taek Seo),배경수(Kyung-Su Bae),황영규(Young-Kyu Hwang) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
The present study concerns a computational study of fully developed laminar flow of a Newtonian fluid through an eccentric annulus with a combined bulk axial flow and inner cylinder rotation. This study considers the identical flow geometry as in the calculation of Escudier et al. An unexpected feature of the calculations for eccentricity ε=0.7 is the appearance of a second peak in the axial velocity, located in the narrowing gap. The distribution of the axial component of the surface shear stress has a maximum in the narrowing gap and a minimum in the widening gap.