• Title/Summary/Keyword: 조정래(趙廷來)

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Dynamic Analysis of New-type Precast V-girder Bridge (신형식 V형 거더 교량의 동적안정석 해석)

  • Cho, Jeong-Rae;Kim, Yeong-Jin;Yang, Yeon-Jong;Koo, Ja-Kap
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.1536-1541
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    • 2011
  • Simple girder bridges are more economical than commonly used PSC box girder bridges in high-speed railway construction, if they secure the riding stability. In this study, the dynamic behavior and riding stability of the newly developed precast V-girder bridge are analyzed. The dynamic moving load analysis is used including two train load case : the KTX train and freight train.

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사료산업 재도약의 길 - 국내 사료산업의 현황과 발전방향

  • Jo, Jeong-Rae
    • Feed Journal
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    • v.2 no.9
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    • pp.58-63
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    • 2004
  • 우리나라의 사료산업은 1961년도에 사료수급계획을 처음으로 수립한 이후 1963년 사료관리법을 제정 공포함으로써 사료산업 발전을 위한 제도적 기틀을 마련하였다. 이를 계기로 원료의 단순 가공단계를 탈피하여 새로운 사료공장이 출범하였고, 1970~80년대에는 경제성장과 더불어 가축의 사육두수 증가로 사료산업의 양적 성장 시대에 돌입하였으나 부산.인천.울산 등 수입항을 중심으로 근대적 사료제조시설이 건설되는 등 급성장기를 맞이하였다. (중략)

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Behavior of FRP-Concrete Composite Deck for a Cable Supported Bridge (사장교용 FRP-콘크리트 합성 바닥판의 거동 특성)

  • Cho, Keun-Hee;Park, Sung-Yong;Kim, Sung-Tae;Cho, Jeong-Rae;Kim, Byung-Suk
    • Proceedings of the Korea Concrete Institute Conference
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    • 2009.05a
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    • pp.51-52
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    • 2009
  • A new-type FRP-concrete composite deck is developed and experimentally verified, which is economically applicable to a bridge with a long span exhibiting high cost effectiveness according to reducing self-weight such as cable supported bridge.

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Bond-Slip Model for FRP-Concrete Interlace I: Theoretical Approach (FRP-콘크리트 계면의 부착모델 I: 이론적 연구)

  • 조근희;조정래;김병석;이영호;진원종;김성태
    • Proceedings of the Korea Concrete Institute Conference
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    • 2003.05a
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    • pp.853-858
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    • 2003
  • A new method is proposed to obtain bond-slip model for an adhesive joint between FRP and concrete. Interface element, which can describe the bond behavior, is developed in order to overcome the restriction that complex constitutive relations cannot be modeled in analytic solution. Calibrating numerical bond-slip model to experimental results, multi-objective optimization problem is constructed by physical programming method, and is solved using genetic algorithm. The validity of proposed method is demonstrated by comparing known analytic solution and numerically optimized solution.

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Structural Behavior of FRP-Concrete Composite Bridge Deck for Rolling Fatigue (윤하중 피로실험을 통한 FRP-콘크리트 합성바닥판의 구조 거동 분석)

  • Kim, Sung-Tae;Cho, Keun-Hee;Chin, Won-Jong;Cho, Jeong-Rae;Kim, Byung-Suk
    • Proceedings of the Korea Concrete Institute Conference
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    • 2005.05a
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    • pp.103-106
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    • 2005
  • Bridge deck is the element presenting the largest damage potentiality among the major bridge structural members. In the previous study, a new-type of FRP-concrete composite bridge deck system was proposed and its static performance was experimentally verified, This study aim at investigation of fatigue behavior such as failure mechanism through rolling fatigue test.

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A Study on the Organization of Literary Archives as National Cultural Heritage (국가문화유산으로서 문학기록의 조직화 방안)

  • Lee, Eun Yeong
    • The Korean Journal of Archival Studies
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    • no.61
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    • pp.31-69
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    • 2019
  • This study seeks to find an organizational method suitable for literary records through a review of the application of records management and an archival exploration of the literary materials of the authors, which are housed in a decentralized collection of domestic literary museums. First, through literature research and case analysis, I explored the "principles of original order" for organizing by characteristics and values of literary records. Next, the organization model was applied to the literature materials of author Jo Jung-rae(1943~) that existed in the form of a 'split-collection' in the local literature museum after drawing a model suitable for organizing literary records as an example. In order to gain an integrated approach to the 'split-collection' by Cho Jung-rae, the research result suggests a model provided through a single gateway by linking descriptive information related to ICA AtoM-based 'Records-Writers-Literature Museum'. The organizational model for the collection of individual literature museum was designed to provide richer collective and contextual information compared to the existing simple list by developing a hierarchical classification system in accordance with the principle of record organizing.

Agency Problems in Banks and the Efficiency of Restructuring Distressed Firms (은행의 대리문제와 부실기업에의 출자전환)

  • Lee, Sang-Woo;Park, Rae-Soo
    • The Korean Journal of Financial Management
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    • v.24 no.2
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    • pp.113-145
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    • 2007
  • In this paper, we examine whether the poor performance of distressed firms where banks take equity may occur due to agency problems in banks. By adopting the debt-equity swap, the bank can effectively postpone the occurrence of bad loans form the failure of the distressed firm. As a result, firms with more debt will be more likely to obtain debt-equity swap, regardless of their probabilities of revival. This is not because they are more profitable, but because they have more debt and thus it poses greater risk to the bank. We empirically look into these predictions with the data of 44 workout firms and find the following results. First, debt-equity swap appears to be more applicable especially when the distressed firms are large and when BIS of related banks is low. Specifically, the conditional probability of 'large firms' based on debt-equity swap is 65.52% and the conditional probability of 'bad banks' based on debt-equity swap is 75.86%. Also, as predicted, the performance of these debt-equity firms is poorer than that of non debt-equity firms. The conditional probability of 'large firms' based on posterior failure is 84.62% and the conditional probability of 'bad banks' based on posterior failure is 84.62%. This is consistent with our predictions and is also confirmed through results of the logit regression analysis. Second, when the restructuring is led by 'good banks', the performance of equity-swap firms is superior to that of non equity-swap firms. This result is consistent with that of James(1995). Hence, we can conclude that there may be some agency problems in restructuring distressed firm-especially when distressed firms are large and banks are bad. And these agency problems can reconcile the difference between James' results and Park, Lee, and Jang's.

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Mechanochemical Synthesis of $Ba(Mg_{1/3}Nb_{2/3})O_{3}$ Ceramics (메카노케미컬 방식에 의한 BMN 세라믹 합성)

  • 조정호;조종래;김강언;정수태;조상희
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.11a
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    • pp.208-211
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    • 2000
  • Ba(Mg$_{1}$3/$Nb_{2/3}$)O$_3$ powders were synthesised from mechanochemically treated mixtures of Ba(OH)$_2$. 8$H_2O$, MgO and Nb$_2$O$_{5}$. Perovskite BMN powder of nanosized particles was successfully synthesized by using mechanochemical methods. Density and dielectric constant of samples with mechanochemical methods showed higher values than those of conventional processing.ng.

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