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      • KCI등재

        Dislocation Density-Based Constitutive Model and Processing Map for T2 Copper During Isothermal and Time-Variant Deformation

        Gang Chen,Yu Jin,Jing Wang,Cheng Zhang,Qiang Chen,Hongming Zhang,Xingjian Zhao,Zhiyong Li,Changhai Xie,Zhiming Du 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.9

        Isothermal compression tests were carried out to study the hot deformation behavior of T2 copper under various conditions. The deformation parameters, such as temperature and strain rate, have strong influence on flow stress and microstructureevolution of the alloy. A unified dislocation density-based model considering dynamic recovery and recrystallization wasestablished. And material parameters of the developed model were optimized by genetic algorithm. Comparisons betweenthe experimental and model data demonstrates that the developed model can precisely describe the flow behavior at quitewide range of deformation conditions. Meanwhile, the designed iterative procedure allows the model to be applied in timevariantdeformation conditions. Processing map and microstructure examination were constructed to optimize the processingwindow of the studied alloy. According to the processing maps, flow instability mainly appeared at low temperatures of500–650 °C and strain rates higher than 0.1 s−1. The optimum deformation parameters of T2 copper was concluded as thetemperature range of 700–800 °C and the strain rate of 0.1–1 s−1.

      • 우리나라 부동산 정책의 현황과 과제

        전강수 ( Gang Soo Jun ) 대구가톨릭대학교 사회과학연구소 2013 사회과학논총 Vol.12 No.-

        Jun, Gang-Soo Until the early-1960s, most people used to purchase housing and commercial real estate properties by their hard work and savings in Korea. However, due to the government`s real estate policy, which was mistakenly planned and implement

      • KCI등재

        ‘사이시옷’과 ‘두음 법칙’ 재고(再考)

        최형강(Choe, Hyeong-Gang) 한국어문학회 2018 語文學 Vol.0 No.140

        This study focused on interpreting ‘Insert-s(ㅅ)’ and ‘Word-initial Rule’ the examples while maintaining the framework of ‘Korean orthography’. Also, they study examined the problem of expanding or modifying the ‘Korean orthography’ framework. The findings point out that the case of western loanwords in terms of ‘Insert-s(ㅅ)’, should be supplemented with Sino-Korean words, and also mentioned that ‘Word-initial Rule’ should be modified with regularity. Whether or not the western loanwords can be handled with Sino-Korean words in ‘Insert-s(ㅅ)’ should be reflected in the rules and commentaries, and if the western loanword should be distinguished from Sino-Korean words, the reason should be specified. ‘Insert-s(ㅅ)’ and ‘Word-initial Rule’ are used in this study because the use of western loanwords raises problems not only in ‘Insert-s(ㅅ)’, but also in ‘Word-initial Rule’. In addition, the class of ‘lyu(류)’ being treated exceptionally needs to be reconsidered. The class of ‘lyu(류)’ can function as a noun, and it should be explained why it combines without the application of ‘Word-initial Rule’ in any conditions. As mentioned above, the rules of ‘Insert-s(ㅅ)’ and ‘Word-initial Rule’ of ‘Korean orthography’ need to be revised and supplemented. This study focuses on that necessity, and the issue of specifying necessity as a regulation will be discussed in more detail through further discussions.

      • <원주어리랑>과 원주오리골농요 연구 -연출을 중심으로-

        남강연 ( Nam Gang-yeon ) 세명대학교 지역문화연구소 2019 지역문화연구 Vol.18 No.1

        원주오리골농요는 지금의 원주시 행구동 신월랑과 반곡동의 오리골, 봉대, 뒷골, 영랑, 입춘내 등지에서 불리던 소리로 신세타령, 갈꺽기소리, 원주어리랑, 모심기소리, 김매기소리 등이 있다. 원주오리골농요는 농악이 성행 하였던 행구동과 반곡동 인근 마을 주민들이 모여서 농악과 함께 이러한 농요를 불렀다. 박희완은 원주어리랑을 비롯하여 이러한 농요를 기억하고 계시는 분으로 입춘내에 살았다. 그는 오리골 농악에서 태평소를 연주하며 근 30여 년 활동 하였으며 지역에서 위와 같은 소리를 ‘원주오리골농요’라 불려지게 되었다. 원주오리골농요는 연구자 남강연이 농자천하지대본을 바탕으로 스토리텔링하여 민속작품으로 재현 연출, 2015년 제26회 강원민속예술축제에서 우수상, 2017년 제58회 한국민속예술축제에서 동상을 수상하였다. 원주오리골농요는 예전에 비료나 거름 등이 부족하여 산에서 갈을 뜯어 거름으로 사용하던 시절이 있었는데 그때 부르던 농요이다. 원주는 행구동, 흥업면, 호저면 등 여러 지역에서 갈을 뜯어 논농사의 거름으로 사용하였다. 원주어리랑을 비롯하여 원주오리골농요는 원주지역의 민속예술작품으로 보전 전승되어야 한다. As the songs enjoyed in Origol, Bongdae, Doitgol, Yeongrang, and Ipchunnae of Bangok-dong, and Sinwolrang of Haenggu-dong in the current Wonju-si, the Wonju Origol Farming Songs include the Sinsetaryeong(one’s hard-luck story), Galggeokgi-Song, Wonju Eorirang, Rice Planting Song, and Weeding Song. The Wonju Origol Farming Songs were sung together with Nongak(Korean traditional farming music) by village residents around Haenggu-dong and Bangok-dong where the Nongak was popular. As a person who remembered these farming songs including Wonju Eorirang, Park, Hee-Wan lived in Ipchunnae. He actively performed in the Origol Nongak for almost 30 years by playing the Taepyeongso. And the songs above have been called ‘Wonju Origol Farming Songs’ in this region. The Wonju Origol Farming Songs were represented/directed as a folk work by the researcher Nam, Gang-Yeon through storytelling based on the ‘Agriculture is the prop of the country’. They received the excellence award at the 26th Gangwon Folk Arts Festival in 2015, and the bronze prize at the 58th Korean Folk Arts Festival in 2017. The Wonju Origol Farming Songs were sung when collecting reeds from mountain to use them as fertilizer. In many areas of Wonju such as Haenggu-dong, Heungeop-myeon, and Hojeo-myeon, the reeds were used as fertilizer of rice farming. The Wonju Origol Farming Songs including Wonju Eorirang should be preserved and inherited as a folk artistic work of Wonju region.

      • 5―Fluorouracil이 鷄胎體重 成長에 미치는 影響에 關한 硏究

        金武剛,李康伊 충남대학교 의과대학 지역사회의학연구소 1984 충남의대잡지 Vol.11 No.1

        The author has studied the effect of 5-fluorouracil on the development of the body weight in chick embryo, which is recently drawing attention in the aspect of its relation to the growth inhibition and malformation as anticarcinogenic agent. On the eight day of incubation 250㎍, 500㎍ and 1,000㎍ of 5-fluorouracil were injected into the chrioallantoic membrane in incubated eggs of three groups, and the eggs were brocken for weighing the body weights on the day of 12th, 14th, 16th, and 18th. The effects of doses on the growth were analyzed by the analysis of variance method. The growth formula (y=a+bt+ct^2) and relative growth formula(y=bx^α) were applied to deternine the theoretical growth Quantities and analyze the factors included in the growth Quantities. The results thus obtained were summarized as follows: 1. There were signficances of growth quantities between control and injected groups, and between 250㎍, 500㎍ and 1,000㎍ injected groups. 2. The growth rates were increased with development in all groups and 500㎍ injected group was tipycal pattern. 3. The specific growth rate of all groups showed tendency of decrease. The order of the tendencies were 1, 000㎍ iniected group, control group, 250ug injected group and 500㎍ injected group. 4. The growth centers of the growth gradient in the 250㎍ and 500㎍ injected groups were the eighteenth day of incubation and 1, 000㎍ injected group was in the twelfth day. 5. The coefficients of relative growth in injected groups to control group were showed negative

      • KCI등재

        결로 발생 확률 평가를 통한 현대 신한옥 단열성능 향상 방안 연구

        이주엽(Lee, Ju-Yeob),천득염(Cheon, Deuk-Youm),주수정(Joo, Su-Jeong),이태강(Lee, Tai-Gang),한승훈(Han, Seung-Hoon) 한국생태환경건축학회 2018 한국생태환경건축학회 논문집 Vol.18 No.3

        Purpose: In order to supply modern new han-oks having excellent thermal performance, careful review in the process of initial architectural planning step is required. The purpose of this study is to verify design guidelines that can maintain and improve environmental performance though analysis of estimation of condensation probability affected by initial design planning Method: To achieve this goal, measurements were carried out 6 Han-oks situated in OJUK han-ok village which were demonstrated to Gang-neung by taking a infra-red thermography using thermal video system. All evaluation targets are new han-oks style which the same structure and materials are applied. Following are analysis items; the exposure or not of wooden members, the difference according to the space usage, layout of the stationary closet facing directly on the outdoor air or not, influence of distributed arrangement of space using water, planning around the house door facing directly on the outdoor air and so on. Result: It was analyzed that the probability of condensation in case of the exposure of wooden members is higher than that of non exposed installation. Also, it was analyzed that the house door space facing directly the outside air needs introduction of entrance concept space which can minimize the heat loss. In stationary closet planning, it is necessary to consider the position of closet and the range of heating. And, it is judged that a separation planning between the space using water and the unused area is necessary.

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