‘일상의 파시즘’, 폭력, 그리고 미래

이광일 새얼문화재단 2002 황해문화 Vol.37 No.-

바텀애시 골재와 기포를 활용한 저탄소・고단열 경량 콘크리트 개발 기초 연구

이광일,문주현,박영식,양근혁 한국콘크리트학회 2019 콘크리트학회논문집 Vol.31 No.3

The objective of the present study is to estimate the potential for developing lightweight concrete with low-CO2・high insulation properties to apply for precast insulation panel in building structures. For main binder and aggregates of such concrete, 30 % ordinary portland cement, 50 % ground granulated blast-furnace slag, 20 % fly ash by weight and bottom ash granules were used, respectively. To enhance the thermal resistance of concrete, air form was added up to 20 % of unit volume of concrete. Concrete specimens were cured under different temperature conditions as follows: 1) constant temperatures of 20 °C or ; 2) variable conditions including constant 20 °C beyond an early age of 10 hrs at 40 °C or 60 °C. The thermal conductivity of concrete specimens was estimated using the measured air-dry density and equation validated by Neville. The compressive strength gain model was proposed on the basis of the maturity concept to consider the producing process of precast panels. Test results showed that the air-dry density and compressive strength of the developed concrete were marginally affected by water-to-binder ratio and curing condition, whereas decreasing rates of 12 % in air-dry density and 64 % in compressive strength were observed when the foam volume ratio increased from 0 % to 15 %. The thermal conductivity of the developed concrete using bottom ash aggregates and 15 % air form by volume was estimated to be approximately 20 % lower than that of the conventional lightweight aggregate concrete. Considering the compressive strength required in precast concrete insulation panel, water ratio not exceeding 30 % and foam volume of 5~10 % could be recommended for low-CO2・high insulation precast panel using the materials attempted in the present study.

다시 지식인과 대중의 관계를 생각한다

이광일 새얼문화재단 2017 황해문화 Vol.94 No.-

조선족과 고려인 문학발전단계 비교 고찰

이광일 국제한인문학회 2012 국제한인문학연구 Vol.- No.9

제품사용환경을 고려한 시나리오 기반 사용성 평가 체계를 위한 연구 : 가정용 가전제품을 중심으로

이광일,지용구,최광수,허우범 대한인간공학회 2008 대한인간공학회 학술대회논문집 Vol.2008 No.10

HCI(Human Computer Interaction)분야에서 사용성(Usabilty) 평가에 대한 연구가 활발하게 적용되고 있는 추세이며 웹이나 각종 가전제품에도 적용되고 있다. 이에 따라 각 적용 대상에 따른 사용성 평가 체계를 위한 다양한 연구가 진행되고 있다. 그러나 기존의 사용성 평가를 위한 평가요소는 제품의 실제적인 사용환경이 반영되지 못하였으며 이와 관련된 추가연구의 필요성이 대두되고 있다. 따라서 본 연구에서는 기존의 사용성 평가와 더불어 사용자의 실제 사용환경을 고려한 평가 요소를 수집함으로써, 제품 사용 시나리오를 기반으로 사용성 평가체계를 개발하는 방법론을 제시하고자 한다. 이를 위해 기존의 문헌연구를 통해서 사용성 평가 요소를 수집하였으며 VOC(Voice of Custormer)와 FGI(Focus Group Interview)를 실시하여 실제 제품 사용 환경을 반영한 시나리오 기반 사용성 평가 평가체계 수립을 위한 방법론을 제시한다. 본 연구 결과는 사용자 중심의 제품디자인을 설계함에 있어 실제 사용환경을 고려한 사용성 평가 방법론을 제시함으로써 다양한 사용성 평가체계 수립을 위한 판단자료로 활용될 수 있다는 점에서 의의를 갖는다.

Robust Measurement Method and Uncertainty Analysis for Position-Independent Geometric Errors of a Rotary Axis using a Double Ball-Bar

이광일,양승한 한국정밀공학회 2013 International Journal of Precision Engineering and Vol.14 No.2

In this study, we propose a robust and simple method using double ball-bar to measure position-independent geometric errors of a rotary axis involving single axis control during the measurement. The standard uncertainty for the proposed method is analyzed to quantify the confidence interval of the measurement result. Two measurement paths are planned to measure the position-independent geometric errors, including two offset errors and two squareness errors of a rotary axis. An error synthesis model using homogenous transform matrices and a ball-bar equation to represent the relation between the positions of two balls and the measured distance between them are used. Set-up errors, which are inevitable during the installation of the balls, are modeled as constants and added to the design position of the balls. Their effects on the measurement result are investigated in detail. Furthermore, a novel fixture consisting of flexure-hinges located at the tool nose is developed to minimize the set-up errors of the ball and to robustly keep the position of the ball during measurements. Finally, the proposed method is validated using simulation and is applied to the rotary axis located on a five-axis machine tool.

5·18민중항쟁, ‘과거청산'과 재구성의 정치

이광일 전남대학교 5.18연구소 2004 민주주의와 인권 Vol.4 No.2

This essay intends to reassess the process of liquidation of 5‧18minjung-protest and to reconstruct the meaning of it as of today. At 1980, there existed two tendencies in the process of 5‧18minjung-protest. One tried to accomplish the minimal democracy, meanwhile, the other tried to go beyond it. Then, the former constructed ‘compromising part’ and the latter did ‘contending part’ against ‘the younger military coup group[shingunbu]’. Fundamentally, ‘the historical liquidation’ is conditioned by the existing socio-economic and political relations. In this point of view, it could be understood the reason that the truth of 5‧18minjung-protest haven’t been uncovered. The June Protest in 1987 was resulted as the compromise between the liberalist and the military coup group, confronted with the political crisis in 1987, so called ‘6‧29 Pact’. As a result, June Protest couldn’t go beyond ‘the limited democracy’. In this way, the liquidation of 5‧18 was also limited to the dimension of minimal democracy. This process of liquidation has two meanings. It means that ‘compromising part(liberal movement)’, aimed at ‘minimal democracy’, was became a reality. And means that ‘contending part(radical movement)’, tried to go beyond ‘minimal democracy’, was excluded out. Therefore, the progressive meanings of 5‧18minjung-protest could be reconstructed and realized, just when we overcome the existing conservative socio-political relations in the neo-liberalist ages.

자유주의 정치 기획의 반복, ‘정치 빈곤’의 자화상: 영화 <변호인>을 중심으로

이광일 한신대학교 민주사회정책연구원 2014 민주사회와 정책연구 Vol.0 No.26

이 글은 ‘정치영화 논란’의 중심에 서 있었던 <변호인>(양우석, 2013)이 어떤 정치적 기획을 소환하고자 하며 그것의 역사적 의미는 무엇인지, 그리고 그것이 지금‘포스트 민주주의시대’의 ‘정치 빈곤’에 대한 의미 있는 비판이 될 수 있는지 살펴보고자 한다. 이를 위해 이 글은 <변호인>과 1960년대 후반 정치적 억압이 고조되던 시기에 만들어진 <휴일>(이만희, 1968) 등을 비교·검토할 것이다. 그리고 그것을 통해 <변호인>이 자유주의 정치세력들의 명목뿐인 진보성을 계속 소환하면서<휴일>이 이미 그 주인공의 죽음을 통해 상징적으로 부정했던 ‘정상적 자유민주주의’의 실현에 집착하고 있음을 지적할 것이다. 이러한 의미에서 이 글은 <변호인>이 정치의 복원에 기여하기보다 오히려 그것의 빈곤을 조장하고 있음을 보일것이다.

연료 절감형 친환경 윤활유

이광일 한국트라이볼로지학회 2010 Lubricants SYMPOSIUM Vol.2010 No.9

지구화시대 한국의 진보운동과 5?18민중항쟁의 현재적 재구성

이광일 전남대학교 5.18연구소 2005 민주주의와 인권 Vol.5 No.2

This study aims to reconstruct today's meaning of 5‧18minjung-protest in the age of globalization in relation to present radical movement in Korea. As liberalist compromised with the neo-military coup group(shingunbu), the progressive meaning of 5‧18Minjung-protest was reduced to conservative and minimal democracy. Reconstructing the meaning of 5‧18Minjung-protest as progressive one, I suggest, could be proceeded by radical movement trying to overcome the existing socio-political relations. First of all, unequal development of capitalism conditioned arising of 5‧18Minjung-protest fundamentally. Today, capitalist social relations are embodied in neo-liberalism. Therefore anti-capitalistic tendency of 5‧18Minjung-protest should be reconstructed as a anti neo-liberalism. Secondly, 5‧18Minjung-protest was a uprising for democracy against neo-military fascist. The present state of democracy in Korea, so called creeping democracy, is subjected to the influence of monopoly capital and 'neo-liberal competitive state' and has been falling into a crisis. Therefore radical movement should strengthen its hegemony to save, deepen democracy in crisis against them. Thirdly, civil participation and solidarity was an important point that made 5‧18Minjung-protest possible. In confrontation of global neo-liberalism today, radical movement should strengthen the level of solidarity in nation-state and the globe. Lastly, 5‧18Minjung-protest was a uprising by the minority, Kwangju, Honam in Korean society. Radical movement trying to overcome repression and differentiation in existing social relations should struggle for social and political rights of the minority, contingent workers, migrant workers, the handicapped, etc. As radical movement realizes these goals in the age of globalization, progressive meanings of 5‧18minjung-protest could be reconstructed.