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이지전 ( Jee Jeon Yi ),유승흠 ( Seung Hum Yu ),오희철 ( Hee Chul Ohrr ),남정모 ( Chung Mo Nam ),박은철 ( Eun Chul Park ),이윤환 ( Yoon Whan Lee ) 한국병원경영학회 2001 병원경영학회지 Vol.6 No.3
The purpose of this study is to classify elderly patient in long-term care facilities using RUG(Resource Utilization Group)-Ⅲ. It is designed by measuring patient medical characteristics and medical staff time. Elderly patients are classified into 7 categories by clinical(medical and behavioral) hierarchical typology of patients. Through the tertiary split, all 44 groups are formulated. This classification is explained by each patient resource(staff time) utilization level which is called CMI(Case-Mix Index). Major findings are as follows ; 1. The objects in this study were classified into 35 groups out of 44 groups. The most frequent category is clinical complex category(CCC; 38.9%). And extensive service category(ESC; 18.8%), reduced physical function category(RPC; 13.1%), special rehabilitation category(SRC; 12.8%), and impaired cognitive category(ICC; 0.96%) are followed. 2. The mean of total CMI was 1.02±0.36, ranging from 0.68 to 1.44(1 vs 2.12). The mean of CMI of SRC is only 1.17 which should be the highest. The means of ESC and SCC are equally 1.20. The means of CMI of CCI, ICC, BPC, and RPC were 0.90, 0.75, 0.83 and 0.96, respectively. 3. The validity of this classification was tested. Trend-test using Regression Analysis was done in the secondary split level. SCC, CCC, ICC, and RPC which covered 68.4% of this research objects showed linear trend of CMI in interim classification. This results were statistically significant. 4. In clinical hierarchy, the trend were showed linearity. But the multiple comparison of categories using Scheffe-test showed that SRC, ESC and SCC had same level of CMI means and CCC and ICC, too. This results were statistically significant. Classifying elderly patients with RUG-Ⅲ, the results showed partly linear trend in clinical hierarchy and in interim classification in conclusion. But, in clinical hierarchy, it was failed to show the consistent order of CMI. It can be explained by two reasons. One is that this research subjects were overlapped in each clinical hierarchy group. And the other is that the some of the characteristics for clinical hierarchy is not appropriate for them. For the further study, it needs to have proper sample size and to modify RUG-Ⅲ to K-RUG to consider our medical environment.
Hydrogeological Study on Contaminant Transport with Optimization Technique
( Yu-chul Park ),( Ho-jin Jeong ),( Hyun-soo Jeon ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
Contaminant transport has been known as one of the most difficult problems because of aquifer heterogeneity and complicated physical, chemical and biological reactions of contaminants. It could be more difficult jobs to estimate remediation time and costs where groundwater was contaminated with organic solvents in industrial complexes. This study showed how to use optimization techniques for estimating contaminant transport and remediation time and costs. Groundwater flow was modeled with MODFLOW and contaminant transport was modeled with MT3D and RT3D. The initial location and concentration were estimated with optimization techniques such as Genetic Algorithm. Parallelization technique was used to reduce computation time and costs. This research project is funded by the Ministry of Land, Transport and Maritime Affairs and supported by the National Institute of Land, Infrastructure and Transport Technology (Project number: 17TBIP-C125148-01). This research was also supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (No.2019R1A6A1A03033167).
부산지역 일부 종합병원의 컴퓨터 단말기 작업을 하는 여성 원무업무종사자들에 있어서 누적외상성장애에 대한 조사
전만중,유병철,고광욱,이용환 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2
registration system were organized, computerized, and simplified. Especially the workers for the hospital registration desk were almost used computer all the working time. Therefore we assessed cumulative trauma disorder of registration desk workers related to computer use of general hospital. Methods: 62 women computer users who worked for registration desk of general hospitals in Busan were assessed from March to August, 2007. The workers were checked general characteristics(age, educational level, and marital status), work related characteristics, and symptoms by self-administered questionnaires. Results: Significantly decreased prevalences for cumulative trauma disorder were observed for subjects who had more educational level, the prevalence of cumulative trauma disorder was 69.2% among high school graduates, 38.2% among junior college graduates, and 20.0% among college graduates. Significantly increased prevalences for cumulative trauma disorder were observed for subjects who had more duration of computer use, the prevalence of cumulative trauma disorder was 56.5% for those who had used computer for more than 8 hours, 32.1% for those who had used computer for 4-7 hours, and 27.3% for those who had used computer for less than 3 hours. And Significantly increased prevalences for cumulative trauma disorder were observed for subjects who had more maximun daily computer use time without break, the prevalence of cumulative trauma disorder was 66.7% for those who had used computer for more than 7 hours, 38.1% for those who had used computer for 3-6 hours, and 21.7% for those who had used computer for less than 2 hours. Multiple logistic regression showed that subjects who had more maximum daily computer use time without break was more likely to report patient. Conclusion: Therefore these findings suggest that preventive interventions on hospital registration desk worker related to computer use were needed
Power Management System implemantation for a stand-alone microgrid using CHILS
Chul-Sang Hwang,Jong-bo Ahn,Jin-Hong Jeon,Gyeong-Hun Kim,Eung-Sang Kim,Minwon Park,In-Keun Yu 한국산업정보학회 2014 한국산업정보학회 학술대회논문집 Vol.2014 No.1
This paper presents a power management system (PMS) for control of a stand-alone microgrid. In the case of a stand-alone microgrid like an island power system, intermittent characteristic of renewable sources can cause severe problems, such as frequency oscillation and power fluctuation. The PMS uses a unified compensation control of a battery energy storage system (BESS) in order to maintain the active power of a diesel generator between minimum and maximum value. We performed a controller hardware-in-the-loop simulation for a stand-alone microgrid modeled in a real time digital simulator, connecting the PMS designed by a digital signal processor. As a simulation result, the PMS determines the reference of BESS which controls active power of the diesel generator. The proposed PMS guarantees high efficiency of diesel generator and stability of the stand-alone microgrid.