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김준수,전연수,전정혁,조재영,Kim, Joon Soo,Jun, Yun-Su,Jun, Jung Hyuk,Cho, Jai Young 한국자원리싸이클링학회 2021 資源 리싸이클링 Vol.30 No.3
Currently, there is a drain of natural resources, environmental contamination, generation of waste, and problems of the earth's climate by CO<sub>2</sub> emissions according to mass production and overconsumption of mankind. It is effectuated by a linear economy that involves manufacturing products, use, and waste repeatedly; there is no guarantee in the lives of humans and the future of the globe if we do not find alternative proposals. For a sustainable developing society and to overcome the present global problems, we must successively change to a circular economy from a linear economy. The circular economy has the concept of an extended value chain in recovery, reuse, remanufacturing, and recycling, instead of discarding after the use of manufactured goods. New business models of circular economy have been realized to save the earth ecology and sustainable developing society in serious recognition of the linear economy system. New business models are established by creating a vision and developing a program, and by renovating technology, law, and financial support through a worldwide government policy.
SiC 휘스커로 강화한 6061 Al 합금 복합재료의 기계적 특성에 미치는 열간압출의 영향
김준수,임수근 ( Jun Su Kim,Su Geun Lim ) 한국주조공학회 1996 한국주조공학회지 Vol.16 No.2
N/A Both cast and extruded composites of SiC whisker reinforced 6061 Al alloy matrix were fabricated by high pressure infiltration of the alloy melt into the SiC preform and subsequent hot extrusion of the composite ingots. The micro structures, age hardening behavior and mechanical properties have been examined on the both cast and extruded composites of SiCw/6061. The cast composites of SiCw/6061 were obtained in which SiC whiskers were randomly oriented. Hot extrusion of these cast composites lead to alignment of the whisker in the direction of extrusion. Strengthening effect of whisker in the extruded composites is lower than that of the cast composites. The cast composites of SiCw/6061 showed higher thensile strength and lower elongation than extruded composites of SiCw/6061 at all testing temperatures. Lower tensile strength and higher elongation of the extruded composites were attributable to fine grain structures in which grain boundary sliding occurred preferentially at elevated temperatures.
김준수,조재영,이재경,박아름,박진혁,윤현목,전연수,Kim, Joon Soo,Cho, Jae Young,Lee, Jae Kyung,Park, Areum,Park, Jin Hyuk,Yun, Hyun Mok,Jun, Yun-Su 한국자원리싸이클링학회 2019 資源 리싸이클링 Vol.28 No.5
Recently, it is increasing a amount of installized solar-cell rapidly, and waste Solar cell module are generated in according to the reduction of efficiency largely. Therefore, it is concerned at the environmental problems and recycling of valuable materials, greatly. The treatment processes of end-of-life photovoltaic modules are composed the disassembly of Aluminum frames, separation of Tempered glass, removal of Ethylene Vinyl Acetate and recovery of valuable Metals. For the efficient recycling, we are considered to the treatment technology seriously. And we are proposed on the general opinions according to the developing technology, EPR (Extended Producer Responsibility) problems and promotion plans for the activation of recycling industry.
김준수,Kim, Jun-Su 한국데이터베이스진흥원 1999 디지털콘텐츠 Vol.9 No.-
지식관리시스템은 2000년까지 2억명 이상의 화이트컬러 및 근로자들에 의해 사용되어 질 것이라 전망되고 있으며 기업들은 성공적인 지식관리시스템 구축에 심혈을 기울이고 있다. 많은 사례들에 볼 수 있듯이 지식관리시스템은 단순히 정보기술에 집중한 시스템이 아니다. 하지만 이 글에서는 지식관리시스템에서 중요한 역할을 담당하는 정보기술 요소에 대해 살펴본다.