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한경주(Han KyungJu),황혜숙(Hwang HyeSuk),김유성(Kim YuSung),이지은(Lee JiEun),정상용(Jeong SangYong),류연희(Ryu YeonHe),최선미(Choi SunMi),구성태(Koo SungTae) 한국한의학연구원 2007 한국한의학연구원논문집 Vol.13 No.2
The aim of the study was to analyze recent trends of experimental studies regarding to acupuncture and moxibustion (AM) through reviewing the 492 papers in the PubMed database in order to help researchers from overlapping study on the same theme and to spur them to investigate experimental studies on AM with understanding the current flow of that. For the analysis, we include papers in which abstract was written in English. First, we performed quantitative analysis of the experimental studies using whole of the first filtrated 492 papers. From this analysis, we could obtain the followings: "Trends of study in the most frequently appeared journals and leading authors in experimental study of AM", "The number of papers and name of journals by leading authors in experimental study of AM", "Trends of Korean papers in the most frequently appeared journals and Korean leading authors in experimental study of AM", "Classification of experimental studies related to acupuncture and moxibustion according to intervention methods or individual country" and "Assortment of experimental studies related to acupuncture and moxibustion in terms of intervention methods on leading countries". Second, we collected 72 papers considering impact factor of the journal and influential effect of the papers' result for qualitative analysis, and we divided the papers into pain related one or not, because the effect of AM on pain is major subject of AM study. The results showed that experimental studies regarding to AM still has several weakness such as limited usage of acupuncture points and inclined application of electroacupucture even though there are 361 acupuncture points in the human body and various kinds of stimulation methods using traditional needles and moxibustion. Therefore, we suggest that researchers should pay more attention to the study on basic AM research creatively and systematically through strengthening and enhancing the cooperation among colleges, research institutes and hospitals. Moreover, in order to promote the basic research of the AM, it is required that we need cross-disciplinary research as well as international collaboration research.
전동차용 보조전원장치 경량화를 위한 HF DC/DC 컨버터에 관한 연구
조정민(Jeongmin Jo),한영재(YoungJae Han),이창영(ChangYoung Lee),정현승(HyunSeung Jeong),정상용(SangYong Jung) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
One of the major trends in power electronics is increasing the switching frequencies. The advances in the frequency elevation have made it possible to reduce the total size and weight of the passive components such as capacitors, inductors and transformers in the DC/DC converter and hence to increase the power density. The dynamic performance is also improved. This document describes several aspects relating to the design of resonant DC/DC converter operating at high frequency(10㎑) and the converter topologies and the control method, which result in soft switching, are discussed.