듀이의 자본주의 경제 비판과 그 교육적 대안

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

扶壁式 擁壁의 最摘設計에 關한 硏究

安主玉 慶熙大學校 1986 論文集 Vol.15 No.-

Numerical Analysis is performed to obtain the optimal size of counterfort retaining wall. As a result of the numerical Analysis, the optimal size can be easily obtained. The most economical spacing of the counterforts appears to be from 1/(2.4) to 1/(1.6) the height of the wall. And an efficient design optimization program is developed.

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.

듀이의 교육철학에서 사회개혁과 교사

이주한 춘천교육대학교 학생생활연구소 1998 學生生活硏究 Vol.22 No.-

初期 偏心 軸荷重을 받는 아치構造의 動的解析

安主玉 慶熙大學校 1992 論文集 Vol.21 No.-

This paper intend to compare the numerical results of the dynamic analysis of arch subject to initial eccentric axial forces. In this study, subspace iteration method is performed in order to estimate frequency analysis. The time history respone for each type of arch is calculated by mode superposition. The arch models which are used for numerical analysis are circular & parabolic arch with and without initial eccentric axial forces.

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.

수치해석에 의한 P.C Beam의 합리적인 단면의 결정

안주옥,박현준 경희대학교 산학협력기술연구원 1995 산학협력기술연구논문집 Vol.1 No.-

The purpose of this paper is to provide a suitable cross section, span length and space of the P.C beam. An improved design method is considered to minimize the cross sectional area of the P.C beam as far as to ensure constructibility. It also should maximize the eccentricity of the P.C tendon from the centroid of section and simultaneously minimize the amount of prestressing force as well. The cross sectional area of the P.C beam is calculated by equalizing the compressive stress of bottom fiber at prestress transfer and tensile stress of bottom fiber under service loads to the corresponding allowable stress. The inequality of P.S losses between calculation and korean Bridge Design Code, results from different values in deflection, camber, crack on the P.C beam For verifying presented sections in this paper, the resoults from the numerical analysis are compared with the Typical Drawing of Korea Highway Corporation and Kim's Paper.

J. Dewey의 政治改革論

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

인플레이숀이 貯畜에 미치는 效果

李柱善 동국대학교 경영관리연구소 1984 經營經濟論叢 Vol.9 No.-

The economic situation in Korea is characterized by high inflation and low saving ratio. By the way, the study of the savings remains in the fundamental level. So, the purpose of this thesis is to provide the better explanatory power relative to the existing studies by means of presenting the effect of inflation on the savings in the theoretical and empirical aspects. The main results derived from the study could be summarized as follows: First, Deaton's model - a model that includes inflation (as well as other factors) directly - has a better explanatory power than the traditional model - a saving function which only has income and interest rate as explantory variables. Second, when the inflation is divided into anticipated and unanticipated inflation, anticipated inflation causes dissaving and unanticipated inflation, involuntary saving. This resultes are caused by the disequilibrium model which is based on the search theory. According to the search theory, consumers encountering an increased price for a certain good may postpone the purchases until a serach of the market confirms that its price relative to all other relevant goods has not changed encough to affect his decision. Since search takes time, consumption expenditures fall, transaction blances accumulate, and the personal saving rate increases. Third, inflation has an effect on the personal or household saving but has no effect on the domestic saving. This result is derived from the variety of the determinants of the savings, and from the uncertainty created by the inflation. Fourth, the variety of the expectation mechanisms does not affect the above results. This is, though inflation has any expection mechanism among static, extrapolative, adaptive, rational expectation the effect of inflation on the savings does not change, but the size of the effect is different. Also, the size of the effect is different according to the time span of the consumer's expectation. That is because inflation expectation in the short run is not complete relative to that in the long run. However, the effect itself is not affected by the time span of the consumer's expectation.

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.