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조명래,오대윤,한동철,Cho, Myung-Rae,Oh, Dae-Yoon,Han, Dong-Chul 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.11
The aim of this paper is to investigate the problem of strip down method, which is usually used to evaluate the engine friction level. The validity of strip down method was investigated by theoretical analysis of friction in crank and piston assembly. The friction of cylinder and piston assembly was analyzed under the various test conditions. The measured cylinder pressure was used as boundary conditions of friction torque and loss calculation. The friction loss of crank and piston assembly was influenced by test conditions that resulted from the variation of load condition. From the results, we have known that the strip down method could be possible to distort the friction loss of engine moving components.
조명래,하경표,김중수,오대윤,한동철,Cho, Myung-Rae,Ha, Kyoung-Pyo,Kim, Joong-Soo,Oh, Dae-Yoon,Han, Dong-Chul 대한기계학회 2003 大韓機械學會論文集A Vol.27 No.1
The aim of this paper is to investigate the friction characteristics of piston assembly, which composed of ring pack and piston skirt. The friction force of piston assembly was measured by using the movable liner in the single cylinder engine, and the various parameters were tested. The friction force was suddenly increased at the expansion stroke due to higher cylinder pressure. The viscous friction was dominant at the mid stroke, but the boundary friction was dominant at the top and bottom dead centers. Through the experiment, we could validate previous theoretical study, and confirm that th e radial clearance and ring tension were very effective to reduce friction loss of piston assembly.
조명래 ( Myung Rae Cho ),장호진 ( Ho Jin Chang ),김민수 ( Min Soo Kim ) 대한고관절학회 2013 Hip and Pelvis Vol.25 No.2
소아의 외상성 고관절 탈구는 드물게 발생하며 성인의 경우처럼 신속한 정복이 필요하다. 또한 연골, 비구순 및 주위 연부조직의 손상 정도를 파악하여야 하며 합병증 발생을 발견하기 위해 지속적인 관찰이 필요하다. 저자들은 3세 소아에서 외상성 고관절 탈구 후 도수 정복 후 운동제한 없이 침상 안정을 시행하여 치료한 1예를 체험하였기에 이를 보고하는 바이다. Traumatic hip dislocation is relatively rare in children and it should be reduced rapidly as that in adults. Evaluation of injuries of the cartilage, labrum, and soft tissue around the hip joint, and continuous follow-up for detection of development of complications is necessary. We report on an unusual case of a three-year-old child with traumatic hip dislocation treated with closed reduction and bed rest without immobilization.
지역개발교육의 과제와 발전방향 ; 21 세기 한국사회발전을 주도할 ' 창조적 지역개발학도 ' 양성을 위하여
조명래(Cho Myung Rae) 한국지역개발학회 1996 韓國地域開發學會誌 Vol.8 No.3
This essay is to assess the educational matter for Regional Development Studies in order more attention to be made to improving the academic performance of Regional Development Studies. The education in Korea`s Regional Development Studies is still heavily influenced by the technical and instrumentalist view concerning regional development and its resultant problem is the lack of student`s intellectual capacity and creativity to cope with the reality of regional development in a professional manner. The paper asserts that Regional Development Studies would emerge as a core discipline of social sciences in the 21st century when the social management of localization vis-a-vis globalization becomes critical to securing national competitiveness in a global society. This prospect can be materialized only if there is the educational effort to make students of Regional Development Studies intellectually more sensitive to and creative in apprehending regional development, in a wider societal context.
조명래(Cho Myung Rae) 한국지역개발학회 1998 韓國地域開發學會誌 Vol.10 No.2
This paper aims at a reappraisal of Network Theory with regard to its possibility as a new froniter theory of regional studies. Network Theory is broadly regarded as part of the so-called New Social Economy with its focus on explaining the socio-institutional characteristics of new industrial paradigm called flexible specialization. The spatialization of network relations under the new industrial paradigm has given rise to a new model of regional space characterized as network region. Network Theory provides us with a fresh insight into the paradigmic features of network region which is best appreciated from a poststructuralist or postmodernist angle. Overall it is concluded that the addition of regional dimension into Network Theory leads to a rise of postmodern regional theory from the field of regional studies.