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임태우 한국융합학회 2019 한국융합학회논문지 Vol.10 No.2
China, more than any other countries in the world shared similar ideological system with Korea historically. That is confucian patriarchy, which later combined with socialism and capitalism respectively. Therefore, the hardship that modern chinese women had to go through in the course of great social changes would provide meaningful cross cultural insights in various women issues in Korea. Thus this study attempts to focus on Ding Ling, who is considered to be one of the first women that brought the feminism up in China. One of her early works, <Miss Sophie’s Diary> and <Thoughts on March 8> from Yan’an days were analyzed to mirror current feminist movement. 한국과 중국은 다른 어떤 사회보다도 유사한 문화적 이념체계의 지배하에 놓여있던 사회라고 할 수 있다. 유교적 가부장제가 바로 그것으로 한국은 자본주의, 중국은 사회주의와 결합되면서 생겨나는 문제들을 안고 있다 할 것이다. 이렇게 볼 때 사회주의로 전환되기 전까지 중국여성들의 신여성으로서의 경험은 한국사회에 나타나는 여성문제의 본질을 규명하는데 귀중한 비교 문화적 시각을 제공한다고 볼 수 있다. 이에 본 논문은 1920년대 신문학 운동 시기에 등장한 이래 역사의 주요 시기마다 문학작품을 통해 여성에 대한 선진적 담론을 이끌어냈던 중국의 걸출한 작가이자 여성주의의 대변인이었던 딩링(丁玲)에 주목하고자 한다. 특히 초기 대표작인 <소피여사의 일기(莎菲女士的日記)>와 해방구 옌안에서 발표한 <3.8절 유감(三八節有感)>을 중심으로 격동의 중국 현대사를 관통했던 그녀의 삶과 문학의 변화추이를 고찰함으로서 오늘날의 여성주의를 다시 돌아보고자 한다.
임태우,김준효 대한설비공학회 2003 설비공학 논문집 Vol.15 No.6
An experimental study on the pressure drop during flow boiling for pure refrigerants R134a and Rl23, and their mixture was carried out in a uniformly heated horizontal tube. Tests were run at a pressure of 0.6 MPa and in the ranges of heat flux 5~50 kW/m$^2$, vapor quality 0~100 percent and mass velocity of 150~600 kg/m$^2$s. Generally, the two-phase frictional multiplier is used to predict the frictional pressure drop during the two-phase flow boiling. The obtained results have been compared to the existing various correlations for the two-phase multiplier. Also, the frictional pressure drop was compared to a few available correlations; The Lockhart-Martinelli correlation considerally overpredicted the frictional pressure drop data for mixture as well as pure components in the entire mass velocity ranges employed in the present study, while the Chisholm correlation underpredicted the present data. The Friedel correlation was found to satisfactorily correlate the frictional pressure drop data except for a low quality region.
R134a 및 Rl23과 비공비 혼합냉매 R134a/R123의 수평관내 이상유동양식에 관한 연구
임태우,김준효,Lim, Tae-Woo,Kim, Jun-Hyo 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.8
Two-phase flow pattern data during horizontal in-tube flow boiling are presented for pure and mixed refrigerants of R134a and Rl23, The flow pattern is observed through tubular sight glasses located at inlet and outlet of the test section, which is made of a stainless steel tube, 2m long with 10mm I.D., 1.5mm wall thickness. The obtained results are compared with the available various correlations for flow pattern. The flow pattern map of Hashizume was in good agreement with the present data except the region of low mass velocity. Weisman flow pattern map was also known to satisfactorily predict data for refrigerants in the region of annular flow. In this study, the flow pattern are simply classified into two groups; stratified(including intermittent, stratified and stratified-wavy) flow and annular flow. The transition quality from stratified to annular flow was obtained by modifying the liquid Froude number.
수평 전열관내 유동비등하는 순수냉매와 혼합냉매의 열전달 특성에 관한 연구
임태우,한규일 대한설비공학회 2003 설비공학 논문집 Vol.15 No.2
An experimental study was carried out in a uniformly heated horizontal tube to examine heat transfer characteristics of pure refrigerants, R134a and R123, and their mixtures during flow boiling. The flow pattern was also observed through tubular sight glasses with an internal diameter of 10 mm located at the inlet and outlet of the test section. Tests were run at a pressure of 0.6 MPa and in the heat flux ranges of 5~100 kW/$m^2$, vapor Quality 0~100 percent and mass velocity of 150-600 kg/$m^2$s. The observed flow patterns were compared to the flow pattern map of Kattan et al., which predicted well the present data over the entire range of mass velocity employed in this study. Heat transfer coefficients of the mixture were less than the interpolated values between pure fluids both in the low quality region where the nucleate boiling is dominant and in the high quality region where the convective evaporation is dominant.
임태우,양동열 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
In this paper, we study the accumulated polymerization effect in the two-photon stereolithography process and its application. In the two-photon stereolithography process, less-polymerized material by insufficient dosing is generally removed by rinse material. The less-polymerized region of a voxel transforms into a fully-polymerized region in the voxel-by-voxel scanning process due to the accumulated dose. The parametric study of the accumulation effect for the widths of a voxel and a line pattern is investigated. Generally, accumulated polymerization from the scanning process has an influence on the increase of the pattern width smoothness of the space between each voxel. At a dose that is smaller than the dose generating a minimum size voxel, stochastic nano-patterns are generated by fitfully accumulated two-photon polymerization. Using the method of fitfully accumulated two-photon polymerization at a small dose, 3D micro-structures with nano-patterns are directly fabricated.