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곽성현,이경수,조한일,서용재,류시완 대한토목학회 2017 대한토목학회논문집 Vol.37 No.2
하천 합류부에서는 지형적 특성에 기인하는 고유한 수체혼합양상과 흐름특성을 보인다. 이러한 합류부에서의 2차원적 수체혼합양상을 파악하기 위해서는 측선기반이 아닌 평면적 계측이 필요하다. 본 연구에서는 낙동강-금호강 합류부를 대상으로 UAV를 활용한 정성적 수체혼합모니터링과 ADCP, 다항목수질측정기, 현장용광학입도분석기(LISST : Laser In-Situ Scattering & Transmissometry)를 이용한 흐름, 수질, 부유입자특성에 대한 측정을 통해 하천합류부에서의 2차원적 수체흐름 및 물질혼합 특성을 파악할 수 있는 현장측정기법을 제시하고 적용성을 검토하고자 하였다. 수리량, 수질인자, 부유입자의 농도 및 입도분포에 대한 현장측정을 통해 복잡한 지형적 특성을 가지는 하천합류부에서의 2차원적 흐름양상과 그에 따른 수체 및 물질혼합양상을 파악할 수 있음을 확인하였다. Each river confluence has the inherent hydraulic and mixing characteristics coming from its bathymetry and topography. It is necessary to make the measurement covering the spatial extent of studying area in order to catch these 2-dimensional intrinsic characteristics. This study focuses to investigate the hydraulic and mixing characteristics at the confluence of Nakdong and Geumho River, from field measurement of flow, water quality, and suspended particle distribution with ADCP (Riversurveyor M9), multi-parameter water quality sonde (YSI6600V2), and submersible system for in-situ observations of particle size distribution and volume concentration(LISST : Laser In-Situ Scattering & Transmissometry), respectively. From the results, it can be found that the field measurement of suspended particle and water quality distribution can be the useful approach to catch the hydraulic and mixing characteristics at a riverconfluence.
지하공간 침수해석을 위한 2차원 흐름모형의 적용성 검토
곽성현 ( Sung Hyun Kwak ),이경수 ( Kyung Su Lee ),이동섭 ( Dong Sop Rhee ),류시완 ( Si Wan Lyu ) 한국안전학회(구 한국산업안전학회) 2015 한국안전학회지 Vol.30 No.6
In order to increase the utilization of limited space in urban area, it can be a good solution to make use of underground space. For the last few decades, underground space systems, such as underground passages, subway stations, and underground shopping arcades, have been constructed in many cities all over the country. Despite of the advantages on the utilization of space in urban area, underground space systems have always been exposed to the risk of inundations resulted from severe rain storms. In this study, it has been examined to apply 2-D flow models (TUFLOW and FLUMEN) to establishing the preventive measures to the risk of flood. For the part with relatively complex configuration, such as a corridor junction, 2-D flow models present the detailed information about the effect of geometry on the inundation events and the temporal and spatial distribution of inundation over the space. From the result, it can be concluded that the 2-D flow model can be the effective implement for establishing the proper measure to the inundation on underground space systems, which generally have relatively long and narrow geometry with complex inner configuration.
곽성현(SungHyunKwack),여인성(InSungYeo),이지성(JiSungLee) 한국체육학회 2005 한국체육학회지 Vol.44 No.5
The purpose of this study was to provide basic information of inactive situation of the adult taekwondo in Korea south. In order to accomplish this, qualitative research methods were used. The participants of qualitative research were 7 Taekwondo instructors, 6 adult TaeKwondo students, and 8 adults who play other sports after quitting Taekwondo. The data were collected through in-depth personal interviews with above participants and interpreted through the qualitative research procedures which are recording, coding, categorization, and conceptualization. Firstly, there is a category of negative thoughts and understanding of Taekwondo from general public. In such category people believe that Taekwondo is, one of the many required typical lesson for kids today, immoderate exercise, and low class sports comparing to other sports. Secondly, there is a category for current operation and management style of Taekwondo gym. In order to bring up the downward trend of Adult Taekwondo the problems occurring within the operation and management of Taekwondo gym should be solved. Such occurring problem is due to lack of commitment, identity, leadership, spirit, sufficient program and facilities. Thirdly, there is a category of current marketing and publicity of Taekwondo. This category represents lack of efficient marketing and advertising through media for publicity along with need for upbringing of star Taekwondo player.
코로나 19 전후 주거환경특성이 주거만족도, 지속거주의향, 그리고 추천의향에 미치는 영향
곽성현(Sung-Hyun Kwak),이호병(Ho-Byung Lee) 한국부동산정책학회 2023 不動産政策硏究 Vol.24 No.3
본 연구는 국내 최대 규모의 대단지 아파트인 서울시 송파구 소재 헬리오시티 아파트 거주자의 코로나19 전후 주거환경특성이 주거만족도, 지속거주의향, 추천의향에 미치는 영향을 검증하는 데 있다. 분석 결과 주거환경특성 중 코로나19 이전에는 입지적 특성이, 코로나19 이후에는 물리적 특성이 주거만족도에 가장 큰 정(+)의 유의한 영향을 미쳤으며, 사회적 특성은 코로나19 이전 보다 이후에 주거만족도에 더욱 강한 부(-)의 유의한 영향을 미쳤다. 이는 헬리오시티 아파트 주거특성 및 코로나19 영향으로 외부환경 보다는 내부환경을 중요시하는 특성이 반영된 것으로 보이며, 시대적 변화로서 집단주의적 문화보다는 ‘공간’과 ‘나’를 중요시 하는 개인적인 문화가 중요해진 현실이 반영된 결과로 보인다. 차별화 변수인 온라인정보서비스 특성은 코로나19 이후 추천의향에만 정(+)의 유의한 영향을 미치고 있음을 확인하였다. 주거만족도는 지속거주의향에 정(+)의 유의한 영향을 미쳤고, 지속거주의향은 추천의향에 정(+)의 유의한 영향을 미쳤다. 이중매개효과를 분석한 결과, 물리적 특성과 사회적 특성은 주거만족도와 지속거주의향을 매개하여 추천의향에 정(+)과 부(-)의 유의한 영향을 미쳤다. 또한, 헬리오시티 아파트가 ‘보행일상권’에 부합하는 주거환경임을 확인하였다. This study is to verify the effects of residential environment characteristics before and after COVID-19 on residential satisfaction, intention to continue living, and intention to recommend among residents of Helio City Apartment in Songpa-Gu, Seoul, the largest scale apartment complex in Korea. As a result of the analysis, among the residential environment characteristics, location characteristics before COVID-19 and physical characteristics after COVID-19 have the greatest positive(+) significant effect on residential satisfaction, and social characteristics has a significant impact on residential satisfaction before and after COVID-19 has a stronger negative(-) significant effect. This seems to reflect the characteristics of valuing the internal environment rather than the external environment due to the residential characteristics of Helio City apartments and the influence of COVID-19, and as a change of the times, it reflects the reality that a personal culture that values ‘space’ and ‘me’ rather than a collectivistic culture has become more important. It was confirmed that the online information service characteristics, which is differentiating variable, has a positive(+) significant effect only on the recommendation intention after COVID-19. Housing satisfaction has a positive(+) significant effects on the intention to continue living, and the intention to continue living has a positive(+) significant effect on the recommendation intention. As a result of analyzing the double mediation effect, physical characteristics and social characteristics have a positive(+) and negative(-) significant effect on the recommendation intention by mediating the residential satisfaction and the intention to continue living. In addition, it was confirmed that the Heliocity apartment is a residential environment that meets the ‘pedestrian daily rights’.