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An Automated System for Empirical Forecasting of Solar Flares and CMEs
박성홍,Park, Sung-Hong,Yamamoto, Tetsuya 한국천문학회 2012 天文學會報 Vol.37 No.2
Solar flares and coronal mass ejections (CMEs) are two major solar eruptive phenomena which can cause enormous economic and commercial losses: (1) flares are sudden, rapid, and intense brightenings from radio waves to Gamma-rays in the chromosphere and corona, and (2) CMEs are large-scale transient eruptions of magnetized plasma from the solar corona that propagate outward into interplanetary space. Most flares and CMEs occur in magnetically complicated solar active regions (ARs). Therefore, it is crucial to investigate magnetic fields in ARs and their temporal variations for understanding a precondition and a trigger mechanism related to flare/CME initiation. In this presentation, we will introduce an automated system for empirical forecasting of flares and CMEs in ARs using full-disk photospheric line-of-sight magnetogram data taken by the Helioseismic and Magnetic Imager (HMI) onboard the SDO.
Open New Horizon with L4 Mission: Vision and Planning
Kyung-Suk Cho(조경석),Junga Hwang(황정아),Jeong-Yeol Han(한정열),Seonghwan Choi(최성환),Eun-Kyung Lim(임은경),Jungjoon Seough(서정준),Rok-Soon Kim(김록순),Sung-Hong Park(박성홍),Jongdae Sohn(손종대),Jie-Hae Back(백지혜),Young-Jae 한국항공우주학회 2023 한국항공우주학회 학술발표회 논문집 Vol.2023 No.6
유리바닥을 이용한 경량 건식 온돌시스템의 개발에 관한 연구
박성홍,김종엽,박병윤,손장열 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.2
This is a preliminary study for the development of the prefab Ondol system using plate glass. The main aim of this study is to suggest on an improved model of the prefab Ondol using plate glass. The aims of this study are (1) reducing energy waste due to excessive thermal storage of Ondol (2) the development of an Ondol system that is easy to maintain (3) to reduce the weight of Ondol structure. However in this paper will show only the thermal performance of Ondol. The measured articles are temperatures of an artificial weather chamber, a model room, and the temperature difference of supplied and returned heating water and so on. The results of this study are (1) The system that first attains to the set-temperature of the model room is Type E(122min). In the case of cooling-off, the current Ondol appeared to be the slowest. (2) The temperature difference of supplied and returned heating water was high in the current Ondol. 3) The difference of the surface temperature of the floor above the pipe and the surface temperature of between pipes was low in Topes A and B. 4) The amount of energy required to reach 20℃ in model room was lowest in tope E.