김기림은 스티븐 스펜더의 시를 어떻게 읽었는가?

김준환(Joon-Hwan Kim) 한국비평이론학회 2007 비평과이론 Vol.12 No.1

  This paper studies Ki-Rim Kim’s reception and transformation of Stephen Spender’s poetry along with W. H. Auden’s and C. Day Lewis’s during the 1930s and 1940s. Since November 1934, Kim had contrasted Eliot"s conservative politics and passive description of the status quo of the present waste land to Spender’s revolutionary politics, critique of Nazism and Fascism and active struggle to make a new society. Especially, Kim adopted the Auden-generation poets as an alternative to T. S. Eliot with emphasis on their revolutionary poetry and politics and transformed them in the colonial context. Section Ⅱ examines one of the major problems of the previous formalistic studies which have focused on similarities between the two poets in terms of such subject matters as the “train”; Section Ⅲ traces Kim’s reading of Spender, Auden, and Day Lewis and reveals the significance of his reading in the colonial context. In doing so, this paper argues that Kim while receiving their revolutionary poetry and politics did not simply imitate but transform them in the process of de-colonialization, and that it is necessary to re-conceptualize “modernity” and “modernism” in the study of the influence of Anglo-American modernist poetry on Korean modernist poetry.

풍자시론 : 김기림의 엘리엇ㆍ스펜더 읽기

김준환(Joon-Hwan Kim) 한국비평이론학회 2008 비평과이론 Vol.13 No.1

  This paper traces Ki-Rim Kim"s readings or T. S. Eliot and Stephen Spender in his prose works focusing on the notion of "satire." While he was writing the satiric long poem - The Weather Chart - in 1935, Kim frequently criticized not only Eliot"s accurate but passive portrayal of the status quo but also his limited use of satire whose (self-)mocking style could help overcome the sentimental romanticism of "sorrow, grief, mourning, and despair" but could not reach the level of "rage" to overturn the established situation. Kim accepted Spender"s realistic portrayal of the socio-political events as an alternative to Eliot"s symbolic portrayal of spiritual waste land, and Spender"s hope for the future or new society as distinguished from Eliot"s indiscriminate or vague hope for the spiritual regeneration. In the mid-thirties when even the "camouflaged aestheticism" could not be available for Korean writers under the Japanese colonial rule, Kim tried to propose the theory or satiric long poem not only to set up the theory or his modernist long poem and but to reveal his desire to overturn the colonial order indirectly by having recourse to Eliot and Spender.

인공신경망을 이용한 온도프리스트레싱 공법의 적정 가열구간 설정에 관한 연구

김준환,안진희,김강미,김상효,Kim, Jun Hwan,Ahn, Jin-Hee,Kim, Kang Mi,Kim, Sang Hyo 한국강구조학회 2007 韓國鋼構造學會 論文集 Vol.19 No.6

온도프리스트레싱 공법은 강합성거더교 또는 강구조물에 인위적인 온도경사를 가하여 프리스트레싱력을 도입하기 위해 개발된 공법으로, 연속 강합성거더교에 적용할 경우 부모멘트 발생지점인 연속지점부 부근의 바닥판에 프리스트레스를 도입함으로써 콘크리트 바닥판의 인장균열을 억제하는 한편, 교축방향 보강철근 사용량 및 강거더 단면을 감소시킬 수 있어 경제성과 시공성의 향상이 가능한 공법이다. 이전의 연구에서 가열구간을 설정하기 위해 사용한 시행오차법은 비효율적인 것으로 온도프리스트레싱 공법을 적용한 설계가 효율적으로 이루어지기 위해서는 보다 합리적인 적정 가열구간의 설정기법이 필요하다. 본 연구에서는 이러한 문제점을 개선하기 위하여 패턴인식, 최적화, 진단 및 예측 등을 수행하는데 많이 사용되고 있는 인공신경망 이론을 적용하여 온도프리스트레싱 공법을 적용한 연속 강합성거더교의 가열구간을 효과적이고 경제적으로 설정하는 기법을 제안하고자 한다. 인공신경망 이론을 학습시키기 위한 학습알고리즘으로는 일반적으로 널리 사용되는 오차역전파 알고리즘을 사용하였으며, 이를 이용하여 2경간 및 3경간 연속 강합성거더교의 가열구간을 예측하고 유한요소해석과의 비교를 통하여 학습알고리즘의 특성 및 예측의 정확도를 분석하였다. The Thermal Prestressing Method for continuous composite girder bridges is a new design and construction method developed to induce initial composite stresses in the concrete slab at negative bending regions. Due to the induced initial stresses, prevention of tensile cracks at the concrete slab, reduction of steel girder section, and reduction of reinforcing bars are possible. Thus, the construction efficiency can be improved and the construction can be made more economical. The method for determining the optimum heating region of the thermal prestressing method has not been established although such method is essential for improving the efficiency of the design process. The trial-and-error method used in previous studies is far from efficient, and a more rational method for computing optimal heating region is required. In this study, an efficient method for determining the optimum heating region in using the thermal prestressing method was developed based on the neural network algorithm, which is widely adopted to pattern recognition, optimization, diagnosis, and estimation problems in various fields. Back-propagation algorithm, commonly used as a learning algorithm in neural network problems, was used for the training of the neural network. Through case studies of two-span and three-span continuous composite girder bridges using the developed procedure, the optimal heating regions were obtained.

Entrainment of Geldart C particles in fluidized beds with binary particles

김준환,이동현,배종욱,남재욱,Sang Done Kim,최정후 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.11

The effects were determined of the mass ratio of Geldart C particles on the total amount of particles (M /M =0-50wt%), superficial gas velocity (U =0.5-1.0 m/s) and coarse particle size distribution (mono, binary, flat,and Gaussian type) on entrainment of Geldart C particles in a bubbling fluidized bed with binary particles (coarse par-ticles: d =0.512 mm, ρ =2,339 kg/m3and Geldart C particles: d =13 µm, ρ =4,455 kg/m3). The initial entrainment rateincreases with increasing U . At U of 0.5 and 0.7 m/s, the initial entrainment rate slightly increases initially and thenremains almost constant with increasing mass ratio (M /M ). At higher gas U of 0.85 and 1.0 m/s, the initial en-trainment rate increases with increasing the mass ratio (M /M ) up to 30 wt%, after which the increasing slope ofthe initial entrainment rate decreases with increasing the mass ratio (M /M ). Also, the decrease in the coefficient ofentrainment rate is equal to the increase in (M /M ) at the corresponding U . The average particle size of the entrainedparticles is about 12-16 µm at U of 0.5-1.0 m/s.

Nb가 첨가된 신형 지르코늄 피복관의 열적 크리프 거동

김준환,방제건,정용환,Kim Jun Hwan,Bang Je Geon,Jeong Yong Hwan 한국재료학회 2004 한국재료학회지 Vol.14 No.7

Thermal creep properties of the zirconium tube which was developed for high burnup application were evaluated. The creep test of cladding tubes after various final heat treatment was carried out by the internal pressurization method in the temperature range from $350^{\circ}C to 400^{\circ}C$ and from 100 to 150 MPa in the hoop stress. Creep tests were lasted up to 900days, which showed the steady-state secondary creep rate. The creep resistance of zirconium claddings was higher than that of Zircaloy-4. Factors that affect creep resistance, such as final annealing temperature, applied stress and alloying element were discussed. Tin as an alloying element was more effective than niobium due to solute hardening effect of tin. In case of advanced claddings, the optimization of final heat treatment temperature as well as alloying element causes a great influence on the improvement of creep resistance.

Interaction Between Multi-Component Lanthanide Alloy and Ferritic-Martensitic Steel

김준환,Jin-SikCheon,June Hyung Kim,Byoung Oon Lee,Chan Bock Lee 대한금속·재료학회 2014 METALS AND MATERIALS International Vol.20 No.5

Studies were carried out to evaluate the effect of lanthanide elements which are generated during the fissionprocess on the interaction between metal fuel and cladding material. Quartenary lanthanide alloy as Nd-Ce-Pr-La and Sm-contained quintenary alloy were manufactured by vacuum arc remelting and a diffusion coupletest with HT9 (12Cr1MoWV) alloy was carried out at 660 and 700 °C for up to 231 h followed by microstructuralanalysis. The results showed that interdiffusion between lanthanide element (Nd, Ce) and Fe tookplace as the diffusion couple test proceeds to form intermetallic compounds as an RE2(Fe,Cr)17 (RE=Nd, Ce, Pr,La) type. As the number of alloying elements increased, the reaction layer thickness increased, but a deviationof the theoretical non-linear relationship as well as an increase in the rate exponent occurred. Instantaneous diffusionof Fe into a lanthanide side and its associated Fe depletion beneath the interface acted as the major drivingforce in forming the reaction layer. The addition of Ce enhanced the Nd diffusion and increased the layergrowth when compared to pure Nd alone.

항공안전데이터 구조 분석 및 표준 분류체계에 관한 연구

김준환,임재진,이장룡,Kim, Jun Hwan,Lim, Jae Jin,Lee, Jang Ryong 한국항공운항학회 2020 한국항공운항학회지 Vol.28 No.4

In order to enhance the safety of the international aviation industry, the International Civil Aviation Organization has recommended establishing an operational foundation for systematic and integrated collection, storage, analysis and sharing of aviation safety data. Accordingly, the Korea aviation industry also needs to comprehensively manage the safety data which generated and collected by various stakeholders related to aviation safety, and through this, it is necessary to previously identify and remove hazards that may cause accident. For more effective data management and utilization, a standard structure should be established to enable integrated management and sharing of safety data. Therefore, this study aims to propose the framework about how to manage and integrate the aviation safety data for big data-based aviation safety management and shared platform.

Analysis of User Experience and Usage Behavior of Consumers Using Artificial Intelligence(AI) Devices

김준환,Kim, Joon-Hwan The Society of Digital Policy and Management 2021 디지털융복합연구 Vol.19 No.6

본 연구는 인공지능(AI) 디바이스가 차세대 정보통신기술(ICT)의 핵심 플랫폼으로 급부상하고 있고, 소비자들의 일상에 널리 적용되고 있는 인공지능 디바이스를 통해 소비자의 사용행태 및 사용자 경험에 대해 살펴보았다. 이를 위해 AI 디바이스 사용 경험이 있는 국내 소비자 600명을 대상으로 AI 디바이스의 속성 인식과 사용행태를 도출하였다. 분석결과는 다음과 같다. 첫째, 다양한 속성 중 음악청취를 가장 많이 이용하였고, 날씨 정보제공과 같은 단순한 기능을 유용하게 인식하는 것으로 나타났다. 둘째, AI 디바이스 사용자의 주요 사용기기는 AI 스피커, 스마트폰, PC, 노트북 등으로 확인되었다. 셋째, AI 디바이스에 대한 연상 이미지는 재미있는, 유용한, 신기한, 똑똑한, 혁신적인, 친근한 순으로 나타났다. 따라서 본 연구는 AI 디바이스의 특성을 반영한 사용 행태를 분석함으로써 향후 AI 디바이스를 활용한 사용자의 서비스 제공에 기여할 수 있다는 실무적 시사점을 갖는다. Artificial intelligence (AI) devices are rapidly emerging as a core platform of next-generation information and communication technology (ICT), this study investigated consumer usage behavior and user experience through AI devices that are widely applied to consumers' daily lives. To this end, data was collected from 600 consumers with experience in using AI devices were derived to recognize the attributes and behavior of AI devices. The analysis results are as follows. First, music listening was the most used among various attributes and it was found that simple functions such as providing weather information were usefully recognized. Second, the main devices used by AI device users were identified as AI speakers, smartphone, PC and laptops. Third, associative images of AI devices appeared in the order of fun, useful, novel, smart, innovative, and friendly. Therefore, practical implications are suggested to contribute to provision of user services using AI devices in the future by analyzing usage behaviors that reflect the characteristics of AI devices.

舶用主機의 國內製作展望

김준환,Kim, Jun-Hwan 한국마린엔지니어링학회 1978 한국마린엔지니어링학회지 Vol.2 No.1

퍼플골드를 위한 열증착법으로 제조된 Au-Al 합금 박막의 물성연구

김준환,송오성,Kim, Jun-Hwan,Song, Oh-Sung 한국진공학회 2008 Applied Science and Convergence Technology Vol.17 No.5

퍼플골드는 78wt%Au-22wt%Al로 이루어진 합금으로 화학식은 $AuAl_2$로 표현된다. 최근 화이트골드, 핑크골드와 더불어 특유의 적자색 (보라색)이 나는 유색골드의 하나로 장신구나 의장용 소재로 활용되고 있다. 퍼플골드는 Au와 Al의 중간상으로 연성과 주조성이 나쁜 특성이 있어 단조와 주조작업을 통하여 원하는 형상의 퍼플골드를 얻기 힘든 단점이 있다. 따라서 절단과 연마공정만으로 최종제품을 제작하거나 박막으로 증착하여 의장용 소재로 활용하는 것이 가능하다. 본 연구는 순수한 Au와 Al을 소오스로 각각 200nm$SiO_2$/Si기판에 78:22의 무게비로 증착시킨 후 열처리를 시행한 경우와, $AuAl_2$를 용융을 통하여 벌크형으로 얻은 후 이를 소오스로 사용하여 유리기판에 기판온도를 상온으로 유지하면서 진공증착을 통하여 표면처리를 한 경우로 나누어 실험을 진행하였다. 완성된 시편은 육안검사, 미세구조분석, 면저항분석, 색차분석, XRD 분석을 통하여 증착된 퍼플골드의 색과 두께를 위주로 한 물성을 측정하였다. 12.5nmAu/40nmAl/200nm$SiO_2$/Si 구조로 제작하고 열처리 한 경우 과도한 표면응집현상이 일어나면서 퍼플골드가 형성되지 않았다. $AuAl_2$ 소오스로부터 직접 열증착한 경우는 벌크상태와 동일한 적자색을 보였으며 퍼플골드의 의장용으로서 심미적 기능이 가능한 것으로 판단되었다. Purple Gold is the alloy consisting of 78wt%Au-22wt%Al, and is expressed as a chemical formula, $AuAl_2$. Lately it is being used for the material of accessories or the decorative ornaments, being one of the colored golds having the peculiar purple color, like White Gold and Pink Gold. Purple Gold has the weak point in shaping through casting process due to the bad malleability and castability, being the intermetalic compound of Au and Al. Therefore, it is possible to produce the final product only by the cutting and the grinding process or to use it as a decorative coat with the thin film evaporation. This study implemented two kinds of thin film experiments. One is the case that heat treatment was made after Au and Al deposition evaporated separately with a weight ratio 78:22 on the 200nm$SiO_2$/Si substrate. The other is the case that the surface deposition was made through the vacuum evaporation, keeping the glass substrate temperature remain room temperature, using the bulk $AuAl_2$ as a source. The final film property was measured, focusing on the Purple Gold's color and thickness through the bare eye inspection, the microstructure analysis, the surface resistance analysis, the color difference analysis, and XRD analysis. Purple Gold was not formed, as the excessive surface agglomeration occurred, in case of being produced and treated thermally with 12.5nmAu/40nmAl/200nm$SiO_2$/Si structure. Our results suggest that of Purple Gold films, showing the same purple color as the bulk's, were successfully deposited with the direct thermal evaporation from the $AuAl_2$ bulk source.