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전원현(Wonhyun Jeon),이경훈(Kyunghoon Lee),김회용(Hoiyoung Kim),홍은희(Eunhee Hong),고웅희(Woonghee Ko),김대성(Daesung Kim) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
Current suspension sub-module that applies to small and medium-sized vehicles by Macpherson type, a manufacturing cost is low compared to the Wishbone type, poor steering performance. Therefore, in the process of research and development of the suspension sub-module rotatable McPherson Rotational Macpherson type overcome the shortcomings of the conventional MacPherson type which can improve steering performance, while maintaining a competitive price. Durability and reliability reduced development schedule of Rotational Macpherson, to achieve such an early stage of development, from product development costs in the virtual environment durability, performance and predictable development assessment profile, it is necessary to do so. In this study, the target vehicle for each driving condition in accordance vehicle RLDA (Road Load Data Acquisition) data and endurance load combination for PG Special to load measurement data collected, and the roads by driving a load analyzes through actual user condition endurance profile development was.
노인성질환의 한,양약 병용약물사용지침서 작성 매뉴얼에 관한 연구
전원경 ( Won Kyung Jeon ),서부일 ( Bu Il Seo ),한창현 ( Chang Hyun Han ),김대준 ( Dae Jun Kim ) 대한본초학회 2011 大韓本草學會誌 Vol.26 No.1
Objectives: This study aimed to design manual of guideline book for combined medicaion of the oriental and the western drugs in the disease of the aged. Method: First, we collected informations about guideline book for drug medication, and we investigated wishes of professors who are working for an oriental medicine at universities. Result & Conclusion: 1. The greater part of professors recognized necessity of guideline book for combined medicaion of the oriental and the western drugs. 2. The basic stages of framing guideline book for combined medicaion of the oriental and the western drugs are as follows. The first step is planning of framing guideline book for combined medicaion of the oriental and the western drugs. The second step is organization of framing group and advisory committee for guideline book. The next steps are searching the core of items and making a searching all the literature and estimating the literature. And then, we should complete basic contents of guideline book in a row, and those must be examined thoroughly by external experts. Finally we can make public the guideline book for combined medicaion of the oriental and the western drugs. If there are reform contents in the guideline book, we can amend contents and make public the revision guideline book again. 3. We need guideline information center for combined medicaion of the oriental and the western drugs in the disease of the aged for framing, wide-spread and development of guideline book. 4. We think that the guideline information center should be composed of a steering committee, a committee of controlling informations and advisory committee for guideline book.
시.공간 부호화된 OFDM 시스템의 효율적인 채널추정기법
전원기,백경현,조용수,Jeon, Won-Gi,Baek, Gyeong-Hyeon,Jo, Yong-Su 한국통신학회 2000 韓國通信學會論文誌 Vol.25 No.8
본 논문에서는 송.수신 다이버시티를 갖는 시.공간 부호화된 OFDM(Orthogonal Frequency-Division Multiplexing)시스템의 효율적인 채널추정기법을 제안한다 제안된 기법은"comb"형태의 훈련심볼을 사용하여 시.공간부호화된 OFDM 시스템의 복호기에서 필요한 채널의 주파수 응답을 구한다. 제안된 기법은 수신단의 주파수 영역에서 처리되므로 기존의 최소평균제곱오차(Minimum Mean-Squared Error: MMSE)기법에 비해 계산량을 크게 감소시킬 수 있다 또한 제안된 기법의 성능을 향상시키기 위해 랜덤 잡음의 영향을 감소시키고 채널의 변화를 추적할 수 있는 기법도 함께 제안한다 제안된 기법의 성능을 부선 이동 채널에서의 모의 실험을 통해 확인한다.을 통해 확인한다. In this paper, we propose an efficient channel estimation technique for space-time coded orthogonal frequency-division multiplexing (OFDM) systems with transmitter and receiver diversity. The proposed technique estimates uniquely all channel frequency responses needed in a decoder of space-time coded OFDM systems using "comb-type" raining symbols. The computational complexity of the proposed technique is reduced dramatically, compared with the previous minimum mean-squared error (MMSE) technique, due to the processing is made all in the frequency-domain. Also, several other techniques for mitigating random noise effect and tracking channel variation are discussed to further improve the performance of the proposed approach. The performances of the proposed approach are demonstrated by computer simulation for mobile wireless channels. channels.
전원선,이은정,김태형,유쾌한,왕동현,오태연,위지완,윤서영,서미선,조아라,박진성,전민혁,추은주,추은주 순천향대학교 순천향의학연구소 2009 Journal of Soonchunhyang Medical Science Vol.15 No.1
The synergistic infection of syphilis and HIV (Human immunodeficiency virus) infection is a re-emerging problem of global health after AIDS (Acquired immunodeficiency syndrome) era. Neglected treatment of syphilis in HIV-positive patients may lead to increased chance of HIV transmission in community and neglected screening of HIV in syphilis patients may delay diagnosis of HIV which now become a controllable chronic diseases. HIV-positive persons with syphilis co-infection are more likely to have neurologic complications and a higher rate of treatment failure with currently recommended regimens. And the neurologic manifestations of syphilis in HIV patients tend to occur earlier periods of HIV infection. But neuropsyphilis in HIV patients is still poorly understood, despite > 2 decades of clinical experiences.
계량정보분석 기반의 연구개발 성과분석: 치매 치료용 천연약물 분야
전원경 ( Won Kyung Jeon ),한창현 ( Chang Hyun Han ),강종석 ( Jong Seok Kang ),허은정 ( Eun Jung Heo ),한정수 ( Joong Su Han ),이영준 ( Young Joon Lee ) 대한한방신경정신과학회 2011 동의신경정신과학회지 Vol.22 No.3
Objectives: Trend of R&D of herbal medicine for dementia treatment was examined based on the quantitative information analysis for establishing the national strategy of research on dementia treatment with oriental medicine. Methods: Definition was made to clarify the technology for development of herbal medicine for dementia treatment. Based on the initial keyword provided by experts in the field, queries were compounded to conduct search in the search engines of WoS and DWPI. The raw data (papers or patents) extracted from the initial search were examined by expert-review before objects of analysis were determined. Then, the accumulated data was analyzed in terms of year, country and organization, which led to examination of the trend of R&D. And the research performance evaluation for dementia treatment technologies was also made in terms of country, organization and researcher based on the forward citation analysis. The international cooperation intensity was examined on the basis of analysis of network by researcher before analysis results were put together to select lead researchers. Results: According to the quantitative information analysis of 1,330 articles that were selected as analysis objects, the number of papers on natural products research for dementia treatment has increased by around 4.6 times in recent five years. This indicates that the intensive studies have been underway recently. It was found to be the US that had the highest level in research filed of herbal medicine for dementia treatment and the highest capacity of international cooperation for that purpose. On the contrary, Korea had the share of papers at 5.1%, the number of countries in cooperation research at 8, and the article quality index at 0.40, showing that the qualitative level was insufficient, compared to the quantitative outcome. In particular, Korea was found to have no intensity of international cooperation among researchers. In case of patent, the results of information analysis of 305 patents selected as analysis objects demonstrated that China had the highest share while Korea had the very low frequency of patent application quantitatively. Conclusions: In this study, the research to develop herbal medicine for dementia treatment has recently drawn much attention that has spread around the globe. Therefore, these results suggest establishing the strategy to develop technology for dementia treatment with oriental medicine in the future based on quantitative information analysis.