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Eom Sang-Yong,Lee Boeun,Hong Seonmi,Hong Young-Seoub,Choi Kyung-Hwa,Kwon Ho-Jang,Yoon Mira,Kang Youn-Seok,Lee Jun Hee,Kim Yong-Dae,Kim Heon 대한의학회 2023 Journal of Korean medical science Vol.38 No.37
Background: This study aimed to evaluate exposure to various hazardous substances emitted by incineration facilities and their likely effect on the health for residents of Bugi-myeon, Cheongju, Korea, which has three incineration facilities. Methods: Heavy metals, polycyclic aromatic hydrocarbons (PAHs), and dioxin concentrations in the air and soil of exposed and control areas were measured. Moreover, the exposure levels to harmful substances and its effects on health were investigated in 1,124 exposed and 232 control adults. Results: PAHs and dioxin concentrations in the air in the exposed area were significantly higher than in the control area. Urinary cadmium and PAHs metabolite concentrations were significantly higher in the exposed group than in the control group. The exposure group also had a higher prevalence of depression and self-reported allergic symptoms than the control group. Conclusion: The possibility of residents in Bugi-myeon being exposed to hazardous substances at incineration facilities cannot be ruled out. To prevent them from further exposure to hazardous substances, it is necessary to prohibit the expansion of additional incineration facilities in this area and to implement continuous monitoring projects for residents.
여름철 고층아파트 건물의 주동형태와 밀도가 층별 외부 열환경에 미치는 영향
엄예슬(Eom, Ye-Seul),김용진(Kim, Yong-Jin),강동화(Kang, Dong-Hwa) 한국건축친환경설비학회 2018 한국건축친환경설비학회 논문집 Vol.12 No.2
The object of this study is to analyze the outdoor thermal environment of pedestrian and residents of high-rise apartment buildings complexes considering the vertical temperature distribution in summer by evaluating the trend of vertical temperature distribution according to the shape and densities of high-rise apartment buildings. For this purpose, the outdoor vertical temperature of the buildings was analyzed for each apartment complex using the ENVI-met simulation program. Also, the outdoor thermal environment analysis technique in the high-rise apartment complex was validated through the outdoor vertical temperature measurement in the apartment building complex. As a result of the analysis of the outdoor thermal environment, ground surface temperature was analyzed to be strongly influenced by the surface heating by solar radiation. In addition outdoor temperature at the pedestrian level increases with increasing the plan area density (λp) and the frontal area density (λF). However, in the case of high-rise apartment buildings, the trend of increasing the outdoor temperature is relatively large, which suggests that the increase in the density of the buildings affects the outdoor thermal environment. As a result of the analysis of the outdoor thermal environment, when planning a high-rise apartment complex, it is suggested that the density and the shape should be actively considered to improve the outdoor thermal environment.
엄영호(Eom, Young Ho),손선화(Son, Sun Hwa),장용석(Jang, Yong Suk) 한국지방정부학회 2018 지방정부연구 Vol.21 No.4
본 연구는 사회문제 해결을 위한 지방정부의 사회혁신 활동에 주목하여 서울시 34개 사회혁신 정책을 대상으로 유형화를 실시하고 사회혁신 생태계 구축을 위한 지방정부의 정책적 흐름을 실증 분석 하였다. 중앙정부 주도의 사회혁신은 사회적 혁신 생태계 조성에 있어서 혁신 환경을 개선하여 폭발적인 양적 증대를 창출해내고 사회적 이슈와 관심을 고조시켰다는 기여가 분명하다. 하지만 중앙정부의 재정적, 제도적 지원에 따른 양적 성장의 실질적 효과와 지속가능성에 대해 끊임없는 의문이 제기되어 왔다. 지방정부는 사회혁신이 실현되는 직접적인 현장이므로 지역의 사회문제, 사회적 난제들을 해결하고 지원하는 역할이 가능하다. 본 연구는 2017년 서울특별시 사회혁신 정책 34개를 집중 분석하여 지방정부의 사회혁신정책 유형화를 시도하였다. 분석 결과, 공급주도형 사회혁신 정책이 다수를 차지(28개, 82.4%)했고, 경제적 가치를 추구하는 정책 비중(19개, 60%)이 높게 나타났다. 수요창출형 정책의 경우, 6개로 17.6% 수준이었으나 이 중 4개(66.7%)가 사회적 가치 창출형으로 분류되었다. 28개 공급주도형 사회혁신정책의 경우 경제적 가치를 추구하는 정책비중이 높은 것(17개, 60.7%)으로 나타났다. 이상의 유형화와 정책 분석을 통해, 사회혁신 정책 유형마다 장단점이 존재하지만 지역의 특성에 맞는 정책유형을 발굴하는 노력이 경주되어야 함을 확인했다. 이를 위해, 공급주도-수요창출, 경제적 가치-사회적 가치 사이에 균형을 이루는 지방정부 사회혁신정책에 대한 장기적이고 지속적인 방향성에 대한 고민이 필요하다. This study focuses on the social innovation of local governments to solve social problems. We classified34 social innovation policies in the Seoul metropolitan government and empirically analyzed the policy flow of local governments for building a social innovation ecosystem. Central government-led social innovation has contributed to explosive quantitative growth and a heightened interest in social issues through the improvement of the environment of the social innovation ecosystem. However, there is a limit to the sustainability of quantitative growth following the financial and institutional support of the central government. Since local governments are the direct sites at which social innovation is realized, they play a role in solving and supporting local social problems. In this study, we classified four types of local government social innovation. Supply-driven social innovation policies accounted for a large proportion of the majority (28,82.4%), and the amount of policies pursuing economic value (19, 60%) was high. In the case of demand creation policies, six (17.6%) were created, but four of these (66.7%) were classified as being of the social value creation type. Of the 28 supply-driven social innovation policies, the number of policies that pursue economic value was high (17,60.7%). Through the above patterning and policy analysis, it was confirmed that there are advantages and disadvantages to each type of social innovation policy, and efforts to determine the policy type that is best suited to the characteristics of the region should be made. To this end, it is necessary to consider the long-term and sustainable direction of local governmen social innovation policies to balance supply-demand creation, economic value and social value.
The 2020 revision of the guidelines for the management of myeloproliferative neoplasms
( Sung-yong Kim ),( Sung Hwa Bae ),( Soo-mee Bang ),( Ki-seong Eom ),( Junshik Hong ),( Seongsoo Jang ),( Chul Won Jung ),( Hee-jin Kim ),( Ho Young Kim ),( Min Kyoung Kim ),( Soo-jeong Kim ),( Yeung- 대한내과학회 2021 The Korean Journal of Internal Medicine Vol.36 No.1
In 2016, the World Health Organization revised the diagnostic criteria for myeloproliferative neoplasms (MPNs) based on the discovery of disease-driving genetic aberrations and extensive analysis of the clinical characteristics of patients with MPNs. Recent studies have suggested that additional somatic mutations have a clinical impact on the prognosis of patients harboring these genetic abnormalities. Treatment strategies have also advanced with the introduction of JAK inhibitors, one of which has been approved for the treatment of patients with myelofibrosis and those with hydroxyurea-resistant or intolerant polycythemia vera. Recently developed drugs aim to elicit hematologic responses, as well as symptomatic and molecular responses, and the response criteria were refined accordingly. Based on these changes, we have revised the guidelines and present the diagnosis, treatment, and risk stratification of MPNs encountered in Korea.
배압 회로를 이용한 인터리브 AC/DC 컨버터의 효율 특성에 관한 연구
서상화(Sang-Hwa Seo),배진용(Jin-Yong Bae),권순도(Soon-Do Kwon),엄태민(Tae-Min Eom),김용(Yong Kim) 한국조명·전기설비학회 2009 조명·전기설비학회논문지 Vol.23 No.12
본 연구에서는 2개의 인덕터를 이용한 인터리브 AC/DC 승압형 컨버터의 듀티 사이클이 0.5 이상일 때 배압 회로 특징을 나타내었다. 일반적으로 AC/DC 승압형 컨버터는 낮은 입력전압(입력 AC 110[V])이 높은 입력전압(입력 AC 220[V])에 비하여 낮은 효율을 갖는다. 제안된 인터리브 AC/DC 승압형 컨버터는 낮은 입력전압에서 배압 회로로 동작함으로 인하여 낮은 입력전압을 사용하는 기존의 컨버터와 비교하여 높은 역률과 향상된 효율을 갖는다. 본 연구에서는 배압 회로 동작하는 하는 인터리브 AC/DC 승압형 컨버터를 제안하고, 모드별 해석과 특성을 논의하였으며, 300[W]급 시작품을 제작하여 그 타당성을 검증하였다. In this paper, the Interleaved AC/DC boost converter using two inductor with voltage-doubler characteristic when it operates with a duty cycle greater than 0.5 is proposed. Generally, the low-line(Input AC 110[V]) operation of the AC/DC boost converter is much less efficient than high-line (Input AC 220[V]) operation. The proposed Interleaved AC/DC boost converter operates as a voltage doubler at low-line. Its low-line range have higher power factor and improved efficiency compared with that of conventional converter. This research proposed the Interleaved AC/DC boost converter for voltage-doubler characteristic. The principle of operation, feature and design considerations is illustrated and the validity of verified through the experiment with a 300[W] based experimental circuit.
김경나,Dae-Yong Eom,Dong-Kyou Lee,Ying-Hwa Kuo 한국기상학회 2010 Asia-Pacific Journal of Atmospheric Sciences Vol.46 No.3
A real-time forecast (RTF) system using Weather Research and Forecast (WRF) model version 2.2 is used to evaluate the diurnal variation of precipitation over South Korea in the summer (June to August) of 2007. The characteristics of the observed precipitation are also analyzed. The analysis and simulation period is divided into two sub-periods following the end of the changma, or East Asian monsoon, in 2007: Period_1 is from 1 June to 21 July, and Period_2 is from 22 July to 31 August. A 24-h precipitation cycle is observed over the entire period. The diurnal variation of precipitation over the South Korea shows that the nighttime maximum precipitation in Period_1 is affected by a largescale system; in contrast, the daytime maximum precipitation in Period_2 resulted from mesoscale convections is induced by thermal instability and moisture advection. The phases of the diurnal variation of simulated precipitation are consistent with those of the observed precipitation. The daytime rainfall amount of simulated precipitation in Period_2 is overestimated, and the convective rain process significantly affects the simulated total precipitation. The daytime overestimated precipitation is associated with overestimations of low-level temperature and moisture during the daytime in the model simulations as compared with the observations.
역률과 전류 리플을 개선한 인터리브 AC/DC 컨버터에 관한 연구
서상화(Sang-Hwa Seo),김용(Yong Kim),권순도(Soon-Do Kwon),배진용(Jin-Yong Bae),엄태민(Tae-Min Eom) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
In high power application, PFC(Power Factor Correction) pre-regulators are generally required. PFC pre-regulators could achieve unity power factor, reduce line input current harmonics and utilize full line power. Interleaving PFC converters could reduce input ripple current, output capacitor ripple current and inductor size. With this closed loop interleaving method, both two phase converters are working at the boundary between continuous and discontinuous mode and accurate 180 degree phase shift is achieved. Implementation of this strategy could be easily integrated to the control chip. Finally, experimental results of a two-phase interleaved boost PFC are presented to verify the discussed features.