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실태조사를 이용한 아파트 단위평면의 공간구성 방식에 관한 연구 : 전주시 분양 면적 24평과 32평형의 아파트를 중심으로
장창우,진정 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.2
The western-style apartment house has become a dominant housing type in urban areas in less than 40 years since it was introduced to Korea in 1961. This is partly because apartment house is comfortable to live in and the Korean government has promoted the spread of apartment houses for some social and political reasons. But most of all the main reason for its relatively fast spread is that the housing type is suitable for urban life. In this regard, this paper presents basic data on the principles of organizing each interior space by investigating into and analyzing the actual life and the behavior pattern of the dwellers of apartments ranging from 60㎡ to 85㎡ the size of public housing units. The data will become au important planning factor in establishing principles of apartment house plans. Furthermore, the paper shows au appropriate arrangement of public spaces and private spaces, which makes up for the defects of the existing floor plans, and the connection among public spaces and proposes a new sort of common-use room. Accordingly, this work provides data that can be used to design dwelling space where lives are reflected. And the paper examines traditional lifestyles and their changes shown in the floor plans and analyses and summarizes the characteristics of unit plans of Korean-style apartment houses where different housing styles coexist harmoniously. Appropriate space arrangement and composition in a given space facilitate housework and secure stability of family life. And establishing the connections among spaces and placing suitable transitional spaces can both protect privacy and encourage communal life at the same time.
대출중개 플랫폼을 통한 비대면 대출거래 고객의 특성분석
장창우,김연국 한국전산회계학회 2022 電算會計硏究 Vol.20 No.3
국내 A캐피털사의 고객 데이터를 활용하여 온라인 대출중개 플랫폼을 통해 유입된 비대면 대출거래 고객과 기존 대출모집법인을 통한 대출고객간의 특성 차이를 비교하고 유입된 제휴채널 별로 채무조정 위험도를 분석하였다. 기존 대출모집법인을 통해 유입된 고객들에 비해 온라인 대출중개 플랫폼을 통해 유입된 고객들은 평균적으로 더 젊고 남성 비율이 높으며 개인사업자 대비 개인고객의 비중이 크고 상위 신용등급에 포함된 비율이 낮았으며 더 많은 대출기관과 거래하였다. 다변랑 분석을 통해 채무조정 위험도를 분석한 결과 고객이 유입된 온라인 대출중개 플랫폼 채널에 따라 다른 위험도를 보였다. 이는 제휴채널 별로 맞춤형 고객 운영전략이 필요함을 보여준다.
김순국,장창우,이준희,정찬회,서용권,강충길,Kim, Soon-Kook,Jang, Chang-Woo,Lee, Jun-Hee,Jung, Chan-Hoi,Seo, Yong-Gwon,Kang, Choong-Gil 한국재료학회 2006 한국재료학회지 Vol.16 No.8
In recent years, Magnesium (Mg) and its alloys have become a center of special interest in the automobile industry. Due to their high specific mechanical properties, they offer a significant weight saving potential in modern vehicle constructions. Most Mg alloys show very good machinability and processability, and even the most complicated die-casting parts can be easily produced. The die casting process is a fast production method capable of a high degree of automation for which certain Mg alloys are ideally suited. In this study, step-dies and flowability tests for AM50 were performed by die-casting process according to various combination of casting pressure and plunger velocity. We were discussed to velocity effect of forming conditions followed by results of microstructure, FESEM-EDX, hardness and tensile strength. Experimental results represented that the conditions of complete filling measured die-casting pressure 400 bar, 1st plunger velocity 1.0 m/s and 2nd plunger velocity 6.0 m/s. The increasing of 2nd plunger velocity 4.0 to 7.0 m/s decreased average grain size of $\alpha$ phase and pore. It was due to rapid filling of molten metal, increasing of cooling rate and pressure followed by increased 2nd plunger velocity. The pressure should maintain until complete solidification to make castings of good quality, however, the cracks were appeared at pressure 800bar over.
정찬회,김순국,이준희,이해우,장창우,Jung, Chan-Hoi,Kim, Soon-Kook,Lee, Jun-Hee,Lee, Hae-Woo,Jang, Chang-Woo 한국재료학회 2007 한국재료학회지 Vol.17 No.4
The effects of immersion time in the liquid nitrogen on the behavior of aluminum alloys used for the hydrogen storage tank of auto-mobile at cryogenic temperature were investigated. With increasing immersion time in the liquid nitrogen, the elongation of AI 5083 alloy at cryogenic temperature decreased because of non-uniform fracture of precipitates on the grain boundary, and the serration also occurred because of discontinuous slip due to rapid decreasing of the specific heat. The mechanical properties of AI 6061 alloy at cryogenic temperature were characterized by uniformed yield strength, tensile strength and elongation regardless of the immersion time in the liquid nitrogen. These mechanical properties of aluminum alloys at cryogenic temperature were interpreted by the strength of grain boundary and the slip deformation behavior.