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류성곤,홍나래,정한용,황선철,정한영,정두신,나은우,서동수 대한의학회 2009 Journal of Korean medical science Vol.24 No.-
Quantifying and rating the impairments due to mental and behavior disorders are difficult for their own characteristics. Korean Academy of Medical Sciences (KAMS) is developing guidelines of rating impairment in mental and behavioral disorders based on Korean Neuropsychiatric Association (KNPA)’s new guidelines. We compared the new KNPA’s guidelines and the American Medical Association (AMA)’s 6th Guides in assessing impairment due to mental and behavioral disorders to develop new guidelines of KAMS. Two guidelines are different in diagnosing system, applicable disorders, qualification of assessors, application of scales, contents of assessment and rate of impairment of the whole person. Both AMA’s and the proposed guidelines have individual merits and characteristics. There is a limitation in using the 6th AMA’s Guides in Korean situation. However to improve objectivity in Korean assessment of psychiatric impairment, the new AMA’s Guides can serve as a good reference.
류성곤 계명대학교 산업기술 연구소 1992 産業技術硏究所 論文報告集 Vol.15 No.2
In recent years, a computer simulation is employed in predicting casting defects and in improving casting yield. In this solidification analysis, the MARC finite element commercial software was used for the pre-processor, solver and post processor. Closed loop for solidification, G/R method, temperature gradient method and solid fraction gradient method might be employed for predicting the shrinkage cavity.
외상에 의한 정신 및 행동장애에 대한 법원 감정의 실태와 문제점에 관한 연구
류성곤,정한용,이병철,안경남 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.6
Traumatic injury can result not only in physical disability but also in mental and behavioral sequelae. It is very important to properly judge the severity of disability as well as the need for assistance and future medical treatment. It is very difficult to establish objective guidelines for assessing mental and behavioral disabilities due to the inherent peculiarity of the disabilities. This study uses reports generated for court because they need to be more judicious than reports for other types of evaluation. We analyzed reports concerning the facts and problems associated with evaluation of mental and behavioral disabilities. We hope this study will help further our understanding of mental and behavioral disabilities.
류성곤,Yu, Sung-Kon Materials Research Society of Korea 2003 한국재료학회지 Vol.13 No.9
3%C-18%Cr-1%Mo-2%Ni-1%Mn high chromium cast iron was casted and destabilized at temperatures of 900, 1000 and $1100^{\circ}C$ for 1, 2, 4 and 8hr under $N_2$atmosphere to observe the effect of destabilization temperature and time on the carbide and matrix structures. In as-cast condition, the microstructure consisted of $M_{ 7}$$C_3$ carbides and matrix structures which were composed of 91.50% austenite and 8.50% martensite. Numerous fine secondary carbides were observed in the specimens destabilized at $900^{\circ}C$ for 1, 2, 4 and 8hr. But, the number of secondary carbides were much reduced with the increased destabilization temperature. More austenite was formed in the matrix with the higher destabilization temperature. The amounts of austenite in the matrix were 4.23% at $900^{\circ}C$, 29.68% at $1000^{\circ}C$ and 66.51% at$ 1100^{\circ}C$, respectively. However, the effect of destabilization time on the secondary carbide and matrix was very weak compared with that of destabilization temperature. The ranges of the amount of austenite in the matrix from 1hr to 8hr destabilization heat treatment were: 3.95%-4.35% at $900^{\circ}C$, 28.89%-30.15% at $1000^{\circ}C$ and 65.13%-67.12% at $1100^{\circ}C$, respectively. The variation ranges were very narrow. The equilibrium concentration of C and Cr in austenite was already reached within 1hr during destabilization heat treatment. After an attainment of the equilibrium concentration of C and Cr in austenite, no more secondary carbide was precipitated from the matrix.
3%C-5%Mo-5%W-10%(Cr or V) 백주철의 응고거동에 관현 연구
류성곤,Ryu, Seong-Gon 한국재료학회 2000 한국재료학회지 Vol.10 No.2
10%C-5%Mo-5%W-10%Cr 및 10%C-5%Mo-5%W-10%V 백주철의 응고거동을 열분석을 통하여 연구하였다. 15Kg 용량의 고주파 유도옹해로에 선철, 고철, Fe-Mo, Fe-W, Fe-Cr, Fe-V 등을 장입시켜 용해시킨 후 슬래그를 제거시키고 $1550^{\circ}C$에서 Y블럭의 펩 주형에 주입하였다. 응고거동을 조사하기 위하여 50g을 Y블럭에서 채취한 뒤 알루미나 도가니에 넣어 재용해시킨 후 1$0^{\circ}C$/min의 냉각속도로 냉각시키면서 여섯 종류의 다른 온도에서 도중에 급냉시켜 응고조직을 광학현미경으로 관찰하였다. 10%C-5%Mo-5%W-10%Cr 백주철의 경우 초정 오스테나이트, 오스테나이트와 M(sub)7C(sob)3의 공정, 오스테나이트와 M(sub)6C의 공정으로, 10%C-5%Mo-5%W-10%V 백주철의 경우 초정 MC, 오스테나이트와 MC의 공정, 오스테나이트와 M(sub)2C의 공정으로 각각 순차적으로 정출하였다. 정출하였다.
류성곤,Ryu, Seong-Gon 대한불안의학회 2006 대한불안의학회지 Vol.2 No.1
As an aging population is increasing, more elderly people are exposed to traumatic stress. Although this issue has received more attention in some literature, it is clear that numerous questions exist in aftermath of trauma exposure in elderly people. In case of Korean elderly suffers, traumatic experience includes the Korean war, military dictatorship and violent demonstration. Studies regarding elderly PTSD is not active and a lot of patients are not still engaged in treatment. We suggest that concerns that are unique to this population are necessary.
Solidifications Simulation of Gray Iron Sheave Product with Consideration of Graphite Precipitation
류성곤,Ryu, Seong-Gon Materials Research Society of Korea 1999 한국재료학회지 Vol.9 No.2
Solidification simulation of gray cast iron sheave product was conducted with the consideration of graphite precipitation during solidification, and of casting processes such as post-inoculation method, treatment and rate, the result of which was aimed to be adopted in the field. In risering design(I), shrinkage cavities were predicted to occur in the part below the risers and center part of the product. While the former defect was considered to be due to the solidification behaviour of riser neck, the latter was due to the feeding channel. In design(II), the length of the riser neck was reduced and one top open riser was attached in the center of the product to prevent the formation of shrinkage cavities, whereby defect-free product was produced.
류성곤,정한용,유승호,정인과,안동현,김영철,최경숙,이경욱,우종민 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.4
Generally, the role of doctors has been limited in prevention, diagnosis and treatment of diseases. However, the role has recently expanded in improving the quality oflife and evaluating the impaimients of various disease. Evaluation of impairment in the psychiatric area has much more difficulty than others. Symptoms of psychiatric disorders have subjective, diverse and changeable. Also, Previous tools such as McBride Disability Evaluation, Law of Workmen's Accident Compensation Insurance and Law of National Compensation, are not accepted as universal instruments in psychiatric area because of their own limitation. Consequently, the Department of Impairment Evaluation Committee m Korean Neu-ropsychiatric Association has revised, evaluated and investigated previous diverse guidelines related with evaluation of Psy-chiatric impairments to make reasonable and adaptable new guidelines which include recent medical opinions. We hope this guideline could be used pertinently in evaluation of psychiatric impairment in every situations.