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김선웅(Sunwoong Kim),박세진(Sejin Park),이영신(Youngsin Lee) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The purpose of this study is to develop the evaluation method of driver's fatigue by bio signal in the actual automobile or simulator. Electromyography(EMG) and flicker value were used to evaluate the driver's quantitative fatigue. and Kwansei-gakuin sleepiness scale(KSS) and subject fatigue rate were used to evaluate the driver's qualitative fatigue.<br/> The experiment was performed on actual automobile. Subjects take a two kind of driving posture. One posture is open posture which have a large trunk-thigh angle(about 110° ), another posture have take a smaller trunk-thigh angle than open posture. The total distance of driving(about 250km), total driving time(about 3 hours), and driving speed(about 90km/h) were fixed.<br/> According to the results, lumbar had more discomfort than neck. Flicker values were decreased as time passed. And, open posture will help you to comfortable driving and to decrease driving fatigue.
부산국가지질공원 이기대 · 오륙도 지질명소에 분포하는 지질유산의 가치평가와 이를 활용한 지오투어리즘
김선웅(Sunwoong Kim),강가령(Karyoung Kang),손문(Moon Son),백인성(Insung Paik),임현수(Hyounsoo Lim),김진섭(Jinseop Kim) 한국암석학회 2017 암석학회지 Vol.26 No.2
지질유산은 지질다양성을 보전하기 위해 지정된 구체적인 개개의 지형 · 지질사례를 의미한다. 지오투어리즘은 지질유산을 대상으로 하여 지질과 지구의 역사에 대한 이해를 구하는 활동으로 지질자원의 다양성을 보전하고 이를 통하여 지역의 발전을 가져오는 광범위한 활동이다. 부산국가지질공원 인증에 따른 이기대-오륙도 지질명소의 탐방객 급증은 핵심영역인 지오투어리즘의 개발과 적용을 통한 지질명소와 지질공원의 효율적인 운영이 필요하게 되었다. 지질유산별 상세한 가치평가를 통하여 응회질 퇴적암, 함각섬석암맥, 구리광산, 돌개구멍이 심화단계의 중심점으로 화산쇄설암, 해식동, 해식애, 파식대, 토르와 도서(島嶼)가 기초적인 중심점으로 설정되었다. 이 중심점들을 토대로 본 연구에서는 교양과 전문가 수준의 단계별 지오투어리즘과 개인, 가족 그리고 소규모 그룹으로 구성될 수 있는 단위별 지오투어리즘에 대한 개념을 정립하고, 각급 학교단위 규모의 지오투어리즘에 대한 방향을 제시하였다. Geoheritage is designated to preserve geodiversity of geological and geomorphological cases. Geotourism is an extensive activity that aims at the understanding of geology and earth‘s history for the geoheritage and for developing regions through preserving the geodiveristy of geoheritage. Igidae-Oryukdo is geosite of Busan National Geopark and its visitors are expected to grow rapidly. Accordingly, for the effective use of the geosites, The development and application of geotourism is required. This study suggests that tuffacious sedimentary rocks, hornblende megacrysts-bearing dike, copper mine, marine potholes should designated as the central points for advanced learning stage; volcanic breccia, sea caves, sea cliffs, wavecut platform, tor and islands as the central points for basic learning stage. Based on this central points, this study established concepts for getourism in this study area at basic and expert level for individual and family tourists, and also small or large groups such as school students.
김선웅(Sunwoong Kim),최흥식(Heungsik Choi) 한국경영과학회 2015 經營 科學 Vol.32 No.4
It is a familiar Wall Street adage that “It takes volume to make prices move.” Numerous researches have found the positive correlation between trading volume and price changes. Recent studies have documented that informed traders have strong influences on stock market prices through their trading with distinctive information power. Ever since 1992 capital market liberalization in Korea, it is said that foreign investors make consistent profits with their superior information and analytical skills. This study aims at whether we can make a profitable trading strategy by using the foreign investors’ trading information. We analyse the relation between the KOSPI index returns and the foreign investors trading volume using GARCH models and VAR models. This study suggests the profitable trading strategies based on the documented relation between the foreign investors’ trading volume and KOSPI index returns. We simulate the trading system with the real stock market data. The data include the daily KOSPI index returns and foreign investors’ trading volume for 2001~2013. We estimate the GARCH and VAR models using 2001~2011 data and simulate the suggested trading system with the remaining out-of-sample data. Empirical results are as follows. First, we found the significant positive relation between the KOSPI index returns and contemporaneous foreign investors’ trading volume. Second, we also found the positive relation between the KOSPI index returns and lagged foreign investors’ trading volume. But the relation showed no statistical significance. Third, our suggested trading system showed better trading performance than B&H strategy, especially trading system 2. Our results provide good information for uninformed traders in the Korean stock market.
영남육괴 중부에 분포하는 해인사화강암의 SHRIMP U-Pb 저어콘 연대
김선웅(Sunwoong Kim),최정윤(Jeongyun Choi),김진섭(Jin-Seop Kim) 한국암석학회 2016 암석학회지 Vol.25 No.4
영남육괴 중부에 분포하는 시대미상의 해인사화강암에 대한 SHRIMP U-Pb 저어콘 연대측정을 수행하였다. 거창군 일대의 해인사화강암에서 채취한 7개의 시료에 대한 연대 측정 결과, 5개 시료에서는 192.4±1.4~195.5±1.9Ma로 대부분 오차범위 내에서 중첩되는 결과를 보이는 반면, 시료 H-11과 12의 시료에서는 각각 187.7±3.3Ma, 188.2±3.6Ma의 연령을 보여 비교적 젊은 시기를 지시한다. The SHRIMP zircon U-Pb age dating was carried out for the age-unknown Haeinsa Granite located in the middle Yeongnam Massif. SHRIMP zircon U-Pb age determinations of 7 samples from the Haeinsa Granite in Geochang area show two age groups. Ages from 5 samples (M-3-1, H-1, 3, 5, 10) are 192.4±1.4~195.5±1.9Ma, whereas ages from 2 samples (H-11 and 12) are 187.7±3.3 Ma and 188.2±3.6 Ma, respectively.
김선웅(Sunwoong Kim),홍오영근(Younggeun Oh),홍강성식(Sungsik Kang) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This is a good example of participatory design which is one of widely used user-centered design method on vehicle seat design, especially for the seat comfort engineering. The volunteered 32 actual (or potential) customers (age: 20-60, similar distributions for height and weight compare to SizeKorea) were participate on consumer clinic for evaluating static seating comfort. The 2 hours of long-term driving evaluation was conducted with the 6 experts (5male, 1 female) in vehicle seat industry. The improvement effect were found from both objective and subjective results (P<0.05) in short-term evaluation. However, people can distinguish the differences through their sense (p<0.05) between two seats even though the two seats have almost same mechanical properties according to measure the load-deflection. There’s no significant decrease from initial stage on discomfort ratio after 2 hours driving with 2 improved seats but 1 current manufactured seat. It can be easily found the effect of improvements on both short- and long-term evaluation. However, there’re still remaining the issues how they are correlate between objective and subjective evaluation data.