비내진설계된 RC 골조의 반복거동에 대한 이력모델의 영향 분석

손주기,이창환 한국복합신소재구조학회 2020 복합신소재구조학회 학술발표회 Vol.2020 No.07

기존 철근콘크리트 골조의 반복거동 예측을 위한 이력모델

손주기,이창환,Son, Joo-Ki,Lee, Chang-Hwan 한국공간구조학회 2020 한국공간구조학회지 Vol.20 No.3

As the damage caused by earthquakes gradually increases, seismic retrofitting for existing public facilities has been implemented in Korea. Several types of structural analysis methods can be used to evaluate the seismic performance of structures. Among them, for nonlinear dynamic analysis, the hysteresis model must be carefully applied because it can significantly affect the behavior. In order to find a hysteresis model that predicts rational behavior, this study compared the experimental results and analysis results of the existing non-seismic reinforced concrete frames. For energy dissipation, the results were close to the experimental values in the order of Pivot, Concrete, Degrading, and Takeda models. The Concrete model underestimated the energy dissipation due to excessive pinching. In contrast, the other ones except the Pivot model showed the opposite results with relatively little pinching. In the load-displacement curves, the experimental and analysis results tended to be more similar when the column axial force was applied to columns.

조직유도재생술의 이론적 배경

손주연,이은영,김창성,조규성,최성호 대한치과의사협회 2009 대한치과의사협회지 Vol.47 No.8

북동태평양 한국 망간단괴 광구해역에서 환경충격 시험지역과 보존지역간의 수층환경 및 침강입자 플럭스 유사성 비교

손주원,김경홍,김형직,주세종,유찬민 한국해양과학기술원 2014 Ocean and Polar Research Vol.36 No.4

Verifying the similarity of environmental characteristics between an artificial impact site and a preserved or reference site is necessary to quantitatively and qualitatively evaluate the environmental impact of mining activity. Although an impact site (BIS station) and a preserved site (called KOMO station) that have been selected in the Korea manganese nodule contract area may share similar environmental characteristics, similarities in terms of the water column environment between both sites has not been investigated. In this study, we compared the chemical properties of the water columns and sinking particle fluxes between BIS and KOMO stations through two observations (August 2011 and September 2012). Additionally, we observed particle fluxes at the KOMO station for five years (July 2003~July 2008) to understand long-term natural variability. Vertical distributions of water column properties such as dissolved oxygen, inorganic nutrients (N, P, Si), total organic carbon below surface layer (within the depth range of 200 m) were not considerably different between the two sites. Especially, values of water column parameters in the abyssopelagic zone from 4000 m to bottom layer (~5000 m) were very similar between the BIS and KOMO sites. Sinking particle fluxes from the two sites also showed similar seasonality. However, natural variation of particle flux at the KOMO site varied from 3.5 to 129.9 mg m−2 day−1, with a distinct temporal variation originating from ENSO events (almost forty times higher than a minimum value). These results could provide valuable information to more exactly evaluate the environmental impact of mining activity on water columns.

팔당호의 수질환경과 조류생물량의 변화

손주연 ( Ju Yeon Son ),최광현 ( Kwag Hyun Choi ),황순진 ( Soon Jin Hwang ) 한국물환경학회 2005 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2005 No.-

북동태평양 발산대 해역($7^{\circ}{\sim}10.5^{\circ}N$)의 무기영양염 분포와 재무기질화 비율

손주원,김경홍,김미진,손승규,지상범,황근춘,박용철,Son, Ju-Won,Kim, Kyeong-Hong,Kim, Mi-Jin,Son, Seung-Kyu,Chi, Sang-Bum,Hwang, Keun-Choon,Park, Yong-Chul 한국해양학회 2008 바다 Vol.13 No.3

2003년 7월, 2005년 8월 그리고 2007년 7월에 북동태평양의 발산대 해역($7^{\circ}{\sim}10.5^{\circ}N$)에서 무기영양염 분포와 재무기질화 비율 연구를 위한 조사를 수행하였다. 북적도 반류와 북적도 해류의 경계에서 형성되는 발산대는 라니냐 현상이 있었던 2007년 7월에 북위 $10^{\circ}N$에 위치하였으며, 용승 현상이 강하게 일어났다. 빈영양 환경의 특성을 갖는 표면 혼합층의 깊이는 2003년에 평균 46 m, 2005년에 평균 61 m 그리고 2007년에 평균 30 m 이었고, 표면 혼합층 이하에서는 용존산소 소모와 더불어 무기영양염 농도가 급격하게 증가하는 영양염약층이 형성됐다. 상층(수심 $0{\sim}100m$)에서 아질산염을 포함한 질산염의 총량은 2003년에 $5.51{\sim}21.71gN/m^2$(평균 $12.82gN/m^2$)의 범위를 나타냈고, 2005년에는 $5.62{\sim}8.46gN/m^2$(평균 $7.15gN/m^2$)의 범위를 그리고 2007년에는 $8.98~27.80 gN/m2$(평균 21.12 gN/m2)의 범위로 발산대가 형성된 지점에서 높은 값을 나타냈다. 인산염 총량과 규산염 총량 또한 아질산염을 포함한 질산염 총량 분포와 유사하였으며, 상층에서 파악된 아질산염을 포함한 질산염 총량에 대한 규산염 총량의 비율은 $0.87{\pm}0.11$ 이었다. 연구 해역에서 식물 플랑크톤 성장을 제한하는 무기영양염은 질소계 영양염으로(N/P ratio=14.6), 북적도 반류 지역에 비해 북적도 해류 지역에서 보다 낮은 농도를 나타냈다. 규산염 또한 낮은 농도로 존재하여 규소 제한 환경을 이루었다. 본 연구를 통해 분석된 재무기질화 비율은 $P/N/-O_2=1/14.6{\pm}1.1/100.4{\pm}8.8(23.44{\leq}Sigma-{\theta}{\leq}26.38)$로 Redfield stoichiometry($P/N/-O_2=1/16/138$) 보다는 낮았지만, 연구 해역 표층에서 재무기질화 과정을 설명하기에 충분하였다. The distribution of inorganic nutrients and their remineralization ratio in the divergence zone ($7^{\circ}{\sim}10.5^{\circ}N$) of the northeastern Pacific were investigated from July 2003 to July 2007. A divergence zone along the boundary of the North Equatorial Counter Current (NECC) and North Equatorial Current (NEC) at $10^{\circ}N$ was observed in July 2007 when the La Nina event and divergence-related upwelling was strong. The mean depth of oligotrophic surface mixed layer in the divergence zone was 46, 61, and 30 m in July 2003, August 2005, and July 2007, respectively. Below the surface mixed layer, a nutricline was clearly observed. The depth integrated value of nitrate including nitrite (DIVn) in the upper layer($0{\sim}100$ m depth) ranged from 5.51 to 21.71 $gN/m^2$(mean 12.82 $gN/m^2$) in July 2003, from 5.62 to 8.46 $gN/m^2$ (mean 7.15 $gN/m^2$) in August 2005, and from 8.98 to 27.80 $gN/m^2$(mean 21.12 $gN/m^2$) in July 2007. The maximum DIVn was observed at the divergence zone. The distributions of phosphate(DIVp) and silicate(DIVsi) were similar to that of DIVn and the DIVn/DIVsi ratio was $0.87{\pm}0.11$ in the upper layer. The limiting nutrient for phytoplankton growth in the study area was identified as nitrogen(N/P ratio=14.6). The nitrate (including nitrite) concentrations were lower in the region mainly affected by NEC than in the region affected by NECC. The study area of low silicate concentrations was also considered to be Si-limiting environment. The remineralization ratios of nutrients were $P/N/-O_2=1/14.6{\pm}1.1/100.4{\pm}8.8(23.44{\leq}Sigma-{\theta}{\leq}26.38)$ in the study area. These ratios suggested remineralization process in the surface layer of divergence zone.

포스터발표 : 수생생태 ; 팔당호의 수질환경과 조류생물량의 변화

손주연 ( Ju Yeon Son ),최광현 ( Kwang Hyun Choi ),황순진 ( Soon Jin Hwang ) 대한상하수도학회 2005 공동춘계 학술발표회 논문집 Vol.2005 No.-

역사적⋅문화적 ‘중간물’로서의 여성 ― 린후이인(林徽因) 단편소설에 관한 일고찰

손주연 중국어문논역학회 2018 中國語文論譯叢刊 Vol.0 No.42

This article explores the novels of Lin Huiyin, widely known as the ‘talented lady of the time(yidai cainü)’ for her ingenuity not only in architecture, but also in poetry. In 1930s, she wrote six short novels that mainly described about the harsh reality which women in China had to face. As a highly educated woman who had received education in England and America in 1920s, she had obtained the ability of analyzing the world in an objective perspective; it can be presumed that on returning to China in 1930s, she must have faced many obstacles of the Chinese society more heavier than others. While her novels are dotted with the acute perspective on modern society, they also express the suffocation she had felt under the pressure. She knew for herself that she was a historical and cultural ‘intermediator’, who is stuck within tradition and advancement. In her novels, main characters and plots in the novels are always described through the eyes of a bystander, and also take place within the fence of a ‘family.’ This narrative structure symbolizes the life of Chinese women trapped by the social frame and prejudices. In conclusion, Lin Huiyin expressed herself as a intermediary being, and her situation of a woman deprived of her voice. However, she also revelaed the harmonization between conflict of tradition and advancement, Western and Eastern cultures, men and women at the same time. 본 논문인 ‘일대재녀(一代才女)’라 불리웠던 린후이인(林徽因)의 소설을 다루고 있다. 린후이인은 건축학 분야에서 큰 업적을 남겼는데, 이 외에도 다수의 시를 창작하였다. 1930년대에 그녀는 6편의 단편소설을 발표했다. 그녀의 소설은 대부분 여성들이 마주한 가혹한 운명을 그리고 있다. 1920년대에 영국과 미국에서 교육을 받은 지식인으로서 그녀는 세계를 분석할 수 있는 눈을 획득하였으나 1930년대에 귀국한 이후 여성이 여전히 냉대 받는 현실 속에서 그녀는 눈에 보이지 않는 장애물을 다수 경험했을 것이다. 6편의 단편소설에서는 사회에 대한 예리한 시선이 곳곳에 나타나지만, 그 한계에 대한 답답함도 동시에 나타난다. 그녀는 역사적⋅문화적 ‘중간물’로서 전통과 진보 사이에 낀 존재임을 인지하고 있었다. 그녀의 소설에서 중심인물과 사건에 대한 묘사는 항상 1인칭 서술자 ‘나’의 시선을 통해 서술되며 ‘가정’이라는 틀 속에서 이루어진다. 이러한 서술 구조는 마치 사회적 틀과 시선에 갇혀 있는 여성의 현실을 대변하고 있다고 볼 수 있다. 이로써 린후이인은 중간물적 존재로서의 자아, 그리고 시선과 목소리를 박탈당한 여성으로서의 존재 의식을 드러냈지만 또 동시에 작품 안에서 전통과 현대, 서양과 동양, 그리고 남성과 여성이라는 요소들 사이에 조화를 이루었다.

영상통화를 이용한 재판진행 시범 실시 결과 보고서

손주철 대한변호사협회 2018 人權과 正義 : 大韓辯護士協會誌 Vol.- No.476

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북동태평양 KODOS 해역의 유기탄소 및 겉보기산소량 특성

손주원,손승규,박용철,김기현,김경홍,김동화,김태하 한국해양과학기술원 2005 Ocean and Polar Research Vol.27 No.1

The samples for organic carbon analysis were collected between 5o and 17oN along 131.5oW in the northeast Pacific KODOS (Korea Deep Ocean Study) area. The mean concentration of total organic carbon (TOC) in the surface mixed layer (~50 m) was 100.13 2.05 mM-C, while the mean concentration of TOC in the lower 500 m of the water column was 50.19 4.23 mM-C. A strong linear regression between TOC and temperature (r2 = 0.70) showed that TOC distribution was controlled by physical process. Results from the linear regression between chlorophyll-a and TOC, and between chlorophyll-a and particulate organic carbon (POC), decreasing of dissolved organic carbon (DOC) in the surface layer caused by non-biological photo-oxidation process. Below the surface layer, biological production and consumption occurred. DOC accumulation dominated in the depth range of 30~50 m and DOC consumption occurred in the depth range of 50~200 m. TOC was inversely correlated with apparent oxygen utilization (AOU) and TOC/AOU molar ratios ranged from -0.077 to -0.21. These ratios indicated that TOC oxidation was responsible for 10.9~30.1% (mean 20.2%) of oxygen consumption in the NE Pacific KODOS area. In the euphotic zone, distributions of dissolved and particulate organic matter were controlled by photo-chemical, chemical, biological and physical processes.