철근콘크리트 내민 받침의 해석

안주옥,이재성 경희대학교 산학협력기술연구원 2001 산학협력기술연구논문집 Vol.7 No.-

The objective of this study is to investigate the behavior of reinforced concrete cobels. In ACI building code, shear-friction analogy has been suggested for span-to-depth ratio less than 1.0, regardless of the failure mechanism of cobels. However, based on our analysis results, it is resonable to apply the shear-friction analogy for a/d ≤ 0.5 and strut-and-tie method for 0.5 < a/d ≤ 1.

J. Dewey의 政治改革論

이주한 춘천교육대학교 학생생활연구소 1999 學生生活硏究 Vol.23 No.-

사람 Ferritin 유전자를 이용한 담배의 형질전환

이주안,김형석,임채완,김해영,박영두 경희대학교 생명자원과학연구원 2002 硏究論文集 Vol.22 No.-

사람 H-chain ferritin 유전자를 Agrobcterium-mediated transformation 방법으로 담배(Nicotiana tabaccum L)에 전이시켰다. 이를 위하여 사람 H-chain ferritin 유전자를 C_(S)VMV promotor와 NOS terminator를 운반하는 plant binary vector, pILTAB 357에 도입하였다. pILTAB 357를 포함하는 Agrobcterium tumefaciens LBA4404로 담배 잎 절편체를 감염시킨 후 형질전환 신초는 MS배지에 1 5 ㎎/L BA, 50 ㎎/L kanamycin 그리고 200 ㎎/L cefotaxim이 첨가된 1차 선발배지에서 유도하였다. 유도된 신초는 MS배지에 100 ㎎/L kanamycin과 200 ㎎/L cefotaxim이 포함된 2차 선발배지에서 뿌리를 유기하였다. 뿌리가 형성된 재분화 개체는 온실에서 재배하였으며 자가수분하여 종자를 수확하였다. 사람 H-chain ferritin유전자의 담배 genome내로의 전이여부를 H-chain ferritin 유전자내의 primer를 이용하여 PCR 방법으로 확인한 바 형질전환 개체에서 예상했던 560bp 단편을 볼 수 있었으나 형질전환을 시키지 않은 식물체에서는 PCR 산물을 확인할 수 없었다. Kanamycin 저항성 분석은 전이유전자의 후대로의 안정적인 유전을 보여 주었으며 저항성 종자들은 homozygous개체를 확보하기 위해 온실에서 재배 중에 있다. A human H-chain ferritin gene was introduced into tobacco (Nicotiana tabaccum L.) plants by Agrobcterium-mediated transformation. To introduce this gene, human ferritin gene was cloned into plant binary vector, pILTAB 357, horboring CsVMV promotor and nopalin synthase terminator (3' NOS). After infection with Agrobacterium tumefaciens LBA4404 containing pILTAB 357, transformed shoots were induced from first selection media (MS media + 1.5 ㎎/L BA + 50 ㎎/L kanamycin + 200 ㎎/L^(1) cefotaxim). Induced shoots were rooted in second selection media (MS media + 100 ㎎/L kanamycin + 200 ㎎/L cefotaxim). Rooted shoots were cultivated, selfed, and seeds were harvested in the green house. To confirm the transfer of the human H-chain ferritin gene in the genome of tobacco plants, PCR was conducted using specific primers of the H-chain femritin gene. A PCR fragment of 560 bp was obtained from each transformed plants, which is the predicted size of the H-cham ferritin gene but not from nontransformed plants. Kanamycin resistance assay showed that transgenes were stably inherited to next generation in all lines. These resistance seeds from each line were cultivated in the green house to obtain homozygous lines for further study.

고가전답의

梁柱東 연세대학교 인문과학연구소 1958 人文科學 Vol.2 No.-

It was in 1942 and 1946 that the writer put out two works, Han-Kuk Ko-Ka Yoˇn-Ku 韓國古歌硏究, A Study of Old Korean Songs, and Yoˇ-Yo Choˇn-Chu 麗謠箋注, The Annotating Study of Songs in the Ko-Ryoˇ Era respectively. The former study explains how to interpret and read Hyang-Ka 鄕歌, common name for the songs of the Silla period and the oldest of songs existing in Korea today but being recorded in I-Tu 吏讀 script, and gives a considerably thorough annotation. The latter followed about the same manner as the former, differing only in the material with which it dealt those of the Ko-Ryo˘ era. For more than a decade since these publications, very few criticisms appeared. However, the writer has continued to go through the books several times linguistically, historically, and investigatively. Here in this paper he presents, from this continued study and for the better revision of his books, some point and issues which must be considered in the field. Some of the strong points and difficulties encountered during the course of pursuing his interpretation and study are also added. But particular attention is given to the views and theories linguistically different from the writer such as: 1. Taking consideration of the fact that the Chinese characters ending with Korean "ㄹ" or "l" sound-Ip-So￣ng 入聲, recorded in the Ke-Rim Yu-Sa 계림類事, have two sounds because the original sound is "ㄷ" or "t" whereas the colloquial is "ㄹ" or "l" sound, the characters should be read both ways, according to the Korean words they represent: ex., 漢捺(天), Hanal ; 骨(花), Kot. Nevertheless, there is an erroneous attempt to read them all alike in one way only, the final "ㄹ" sound. 2. I-Tu 吏讀 script "矣" is read ㄷㆎ "Tai", because it is the abbreviation of "冬矣", (which, by the Pan-cho￣l 反切 rule, reads ㄷㆎ Tai). However, there is a vain effort to relate this script to a genetive auxiliarv word (or suffix) "ㅇㆎ Ai" and the nominative case from "ㄷㆎ Tai" of space noun ㄷㆍ "Ta" or its Altaic equivalent. 3. Regardless of the evidence that the sounds "△"(Z or ?) and "ㅸ" "V" were used in the period of the Silla dynasty and in which period they were already vulgarized on the other hand as "mute" and "W", there is a wrong opinion that the two sounds did not exist in the days of Silla and Ko-Ryo˘ dynasties, but appeared in the early days of Cho-So˘n era, and that they disappeared in the middle of the same dynasty. 4. In spite of the writer's discovery of ㅅㆍ "sa" as an incomplete noun for "matter", there has been a misuse of "씨 ssi" as the general term for "partof speech". 5.Against the writer's view that from ancient time the nominat tive auxiliary word (or suffix) "가 ka" has been used in the colloquial as "이 i" in the written language, there is an opinion that "ka 가" did not exist in the old days but that it came out all at once in the seventeenth century, the Cho-So˘n era. But he belives this to be a mistake caused by the inability to discriminate the materials of the written languge and that of the colloquial.

듀이의 자본주의 경제 비판과 그 교육적 대안

이주한 춘천교육대학교 초등교육연구소 1999 敎育硏究 Vol.16 No.-

사장교 주탑의 안정성 해석

안주옥,임정열 경희대학교 산학협력기술연구원 1998 산학협력기술연구논문집 Vol.4 No.-

The nonlinearity of a cable-stayed bridge results in the large displacement of main girder due to a long span, the large axial forces reduce the catenary action of cables and the flexural stiffness. Therefore, th static and dynamic behavior of pylon for a cable-stayed bridge plays an important role in determining its safety. This study was performed to find the behavior of pylon of cable-stayed bridge for the first-order analysis considering of axial load only and for the second-order analysis considering of lateral deflection due to axial load. The axial force and moment values of pylon were different from the results of the first-order analysis and second-order analysis according to pylon shape and cross beam stiffness when the pylon was subjected to earthquake and wind loads. In te second-order analysis, comparing the numerical values of the member forces for the dynamic analysis, type 3 and 4(A type_ were relatively more advantageons types than types 1 and 2 (H type). considering the stability for pylon of cable-stayed bridge(whole structural system), types 3 and 4(A type) with pre-bucking of girder were proper types than types 1 and 2(H type) with buckling of pylon.

철근 콘크리트 뼈대구조의 최적 설계

안주옥 경희대학교 산학협력기술연구원 1996 산학협력기술연구논문집 Vol.2 No.-

An optimum design section of concrete framed structure based on the Korean Concrete Standard specifications is presented in this study. SUMT algorithm is used for numerical analysis of optimization. The optimum design section is divided framed structure into beam and column sections. As a result of numerical analysis, it was shown comparatively good results of optimum sections within 10 iterations.

스트럿-타이 모델을 이용한 파일캡의 해석

안주옥,박경철 경희대학교 산학협력기술연구원 1999 산학협력기술연구논문집 Vol.5 No.-

박스 거더 교량의 격벽 정착부 해석

안주옥,김현삼 경희대학교 산학협력기술연구원 1998 산학협력기술연구논문집 Vol.4 No.-

Because cross-section of Prestressed Concrete Box Girder Bridge is usually a closed section, its transverse, longitudinal flexural rigidity and elastic stability are very high. Hence, the bridge is very safe and stable during construction and use, and frequently used in these days. It can be applied with advantages to 60=70m span and curved bridges that have a lot of torsional moments. The Box Girder Bridge transmits the upper weight to a pier and abutment through diaphragm built inside the box girder, and prevents the section deformation by increasing the cross-section stiffness. But, the diaphragm, which includes geometric and static discontinuity, causes a lot of problems to be accurately analyzed and reasonably designed only with Korean Design Codes. When a prestressed force ia applied directly to a diaphragm, a large tension force is built up opposite side and lower part of anchorage zone, which causes bursting stress. Cracks around the anchorage zone are found because of bursting stress. The bursting stress and the tension around the diaphragm are not considered in the Korean Design Code. Hence, the prestress transferring mechanism, the analysis of End Strut and the stability of Lower Corner, are needed to study. Analysis using Strut-and-Tie Model has been performed to transverse analysis of diaphragm. An accurate structural analysis about the anchorage zone has been performed by a jStrut-and-Tie Model based on Area-AASHTO and CEB-FIP code, and their results has been compared with those of the Korean Design Code. It has been found that the Korean Design Code underestimates the shear strength of concrete.

鋼鈑桁의 設計에 對한 考察

安主玉 慶熙大學校 1982 論文集 Vol.11 No.-

This investigation is concerned with the plate girder analysis and design. By understanding of structural behaviors, more efficient and economical girder can be obtained. Herein, the investigation shows how many theories may be use in practical design problem. It is desirable to use the hybrid girder for the economy of plate girders.