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동재용(Dong Jae-Yong),이주한(Lee Ju-han),서태범(Seo Tae-Beom),박문희(Park Moon-Hee) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
This paper describes the procedure and calculation results of basic design and steady state variation of performance of 200 KW solar tower power plant of construction plans in Dae-gu, South Korea. Selected meteorological data in Dae-gu research hourly-based weather date. To simulate process of plant, calculation computed by using commercial software of ASPEN HYSYS. The result is provided that is necessary to perform preliminary evaluations of whether a solar tower power plant is technically and economically feasible. Each Design value are offered by DAEGU CITY GAS Corp.
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타워형 태양열 발전 시스템의 성능평가를 위한 시뮬레이션 설계(Ⅰ)
동재용(Jae-Yong Dong),이주한(Ju-Han Lee),서태범(Tae-Beom Seo),박문희(Moon-Hee Park) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
This paper described the procedure and calculation results of basic design and steady state variation of performance of 200kW solar power tower. To Simulate process of plant, calculation computed by using commercial software of ASPEN HYSYS. The design standard of the solar power tower is 200kW generation with solar only at 850W/㎡ direct-normal insolation (DNI) condition. The results of simulation show the important value for working fluid, air and steam condition at each part of the system.
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동재용 ( Jae-yong Dong ),이광수 ( Kwang-soo Lee ),곽진미 ( Jin-mi Kwak ),김기영 ( Ki-young Kim ) 대한보건협회 2016 대한보건연구 Vol.42 No.4
연구목적 : 수면장애 질환이 외래 진료서비스 이용에 미친 영향을 분석하는데 목적이 있다. 연구방법 : 한국보건사회연구원과 국민건강보험공단이 공동으로 수집하는 한국의료패널 2012년 자료를 사용하였다. 분석대상은 9,721명이며, 분석방법은 성향점수매칭방법(Propensity Score Matching, PSM), 감마 회귀분석과 음이항 회귀분석을 실시하였다. 연구결과 : 수면장애 질환은 총 외래 진료비와 외래 방문 횟수에 유의한 영향이 있었고, 회귀계수 값은 0.97(95% CL : 0.78 ~ 1.16)과 1.06(95% CL : 0.91 ~ 1.21)으로 나타났다. 성별과 교육수준은 총 외래 진료비만 유의한 영향이 있으며 성별의 회귀계수 값은 -0.21(95% CL : -0.40 ~ -0.30), 교육수준(초등학교, 고등학교)의 회귀계수 값은 -0.34(95% CL : -0.60 ~ -0.14) 및 -0.37(95% CL : -0.61 ~ -0.03)로 나타났다. 총 외래 방문 횟수는 수면장애 질환 변수 외 유의한 영향이 있는 변수가 없었다. 수면장애 질환 환자는 총 외래 진료비를 평균 약 126만원을 사용하였으나, 비 수면장애 질환 환자는 평균 약 50만원을 사용하였다. 또한 수면장애 질환 환자는 총 외래 방문 횟수가 평균 약 52회로 나타났으나, 비 수면장애 질환환자는 평균 약 20회로 나타났다. 결론 : 수면장애 질환은 사용하는 외래 진료비가 높으며 외래 의료기관을 방문하는 횟수도 많다. 환자들이 부담하는 진료비 외에도 사회·경제적으로 많은 비용과 문제들이 발생하고 있어 수면장애 질환에 대한 관심이 필요하다. Objective: This study purposed to analyze the effects of sleep disorders on the outpatient service uses. Methods : Data was provided from the Korea Health Panel(KHP) collected by the Korea Institute for Health and Social Affairs(KIHASA) and National Health Insurance Service(NHIS) in 2012. The number of sample is 9,721 people. This study was used Propensity Score Matching(PSM) and Gamma regression and Negative Binominal regression. Results : First, sleep disorders had significant effects on the total outpatient charges and total outpatient visits. The coefficient was 0.97(95% CL : 0.78 ~ 1.16) and 1.06(95% CL : 0.91 ~ 1.21) in sleep disorders. Second, gender and education level had significant effects on the total outpatient charges. The coefficient was - 0.21(95% CL : -0.40 ~ -0.30) in gender. The coefficient was -0.34(95% CL : -0.60 ~ -0.14) and -0.37(95% CL : -0.61 ~ -0.03) in education level. Third, other variables had not significant effects on total outpatient visits besides sleep disorders. Conclusion : Sleep disorders have an impact on outpatient medical charges and visits. In addition to, patient with sleep disorders have a lot of socio-economic burden besides medical charges. Health policy markers should be interested in sleep disorders.
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고온 태양열을 이용한 2단계 열화학 사이클의 수소생산(Ⅱ)
동재용(Jae Yong Dong),김태준(Tae Jun Kim),정영국(Young Guk Jung),오상준(Sang Jun Oh),이주한(Ju Han Lee),서태범(Tae Beom Seo) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.5
본 연구에서는 집광된 태양복사에너지를 열원으로 사용히고 NiFe₂O₄/m-ZrO₂를 입힌 다공성 물질을 물 분해 장치로 사용한 수소생산시스템의 실험을 수행하였다. 집광장치로 5㎾<SUB>th</SUB> 급의 접시형집광장치(인하대학교, 인천, 송도)를 사용하였으며 반응에 필요한 온도(1100℃~1600℃)를 견디기 위한 반응기 설계를 수행하였다. 실험을 통해 인공광원을 이용하여 성능이 평가된 촉매가 담지된 다공성 물질에 대한 실제 일사조건에서의 수소생산성능을 평가하고자 하였다. 실험결과 5회의 연속적인 물 분해 수소생산 사이클을 유지하였으며 수소생산량 및 페라이트의 전환율에 대한 분석을 수행하였다. This study present the results of experiment of hydrogen production with the thermochemical two-step water splitting cycle using solar heat. Chemical reactor was designed to be used for operating with dish type solar thermal system. Scaled-up device, performance verified on hydrogen production in laboratory scale experiment, was tested by dish type solar thermal system in field. The optimum temperature of reactions was examined by solar thermal simulator and this temperature was used as a reference value during the system operation in field. The foam device NiFe₂O₄/m-ZrO₂ powder was successful with respect to hydrogen production through 5 repeated cycles.
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성인 남녀를 대상으로 대사증후군이 총 진료비에 미치는 영향분석
김기영 ( Ki Young Kim ),동재용 ( Jae Yong Dong ),한승연 ( Han Seung Yeon ),이광수 ( Kwang-soo Lee ) 한국보건행정학회 2017 보건행정학회지 Vol.27 No.1
Background: This study purposed to analyze the effects of metabolic syndrome on the total medical charge of patients. Methods: 2013 National Health Insurance Service sample research database (eligibility database, medical database, and health ex amination database) was used for this study. Gamma regression was applied to analyze the effects of metabolic syndrome on the total medical charge and logistic regression was used to determine the probability of medical charge which was higher than the third quartile. Sociodemographic characteristics (age and household income), health behavior factors (smoking, drinking, exercise, and body mass index), and disease related factors (family history and metabolic syndrome) were included as the independent vari ables. Results: people who had metabolic syndrome spent more medical expenses than those without metabolic syndrome both in man and woman group. The standard regression coefficient was 0.09 (p<0.001) in man with metabolic syndrome and 0.16 (p<0.001) in woman. In addition, woman with metabolic syndrome spent more than the third quartile of medical charge. The odds ratios was 1.04 (p=0.16) for man with metabolic syndrome and 1.18 (p=0.013) for woman. Conclusion: people with metabolic syndrome spent more medical charge, so it will need to consider policy interventions for pre venting the incidence and management of metabolic syndrome in Korean people.
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