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EMG Classification 기반의 로봇의수 제어와 착용형 햅틱 디바이스 기반의 자기수용감각 피드백의 폐루프 통합시스템
차형도,양승운,안시온,박상현,박석호 제어로봇시스템학회 2021 제어로봇시스템학회 국내학술대회 논문집 Vol.2021 No.6
Many currently robotic prosthetic hands are controlled based on electromyography (EMG) signals, and amputees use their visual feedback to recognize robotic prosthetic hand movements. However, controlling robotic prosthetic hand without vision makes high cognitive loads and is inaccurate. To solve the limitations, we propose a wearable haptic device for proprioceptive feedback with high DOF and introduce a rule-based feedback method. Also, through various experiments, the recognition accuracy of the wearable haptic device for proprioceptive feedback was evaluated on 10 types of grips. And, to recognize the user's intentions, a CNN model for EMG classification was learned with 6 channel EMG signals. Finally, a closed-loop integrated system is constructed using the proposed wearable haptic device, the robotic prosthetic hand, and the EMG classification. We also evaluate the overall performance of the proposed integrated system through experiments on users.
최두열(Doo Yull Choi),안시온(Si on An) 한국지역개발학회 2014 한국지역개발학회 세미나 논문집 Vol.2014 No.1
본 논문은 한국의 15개 시도별 1인당 국민 소득의 추이를 Phillips and Sul(2007)에 의해서 개발된 패널 수렴 테스트 방법을 이용하여 분석함으로써 한국의 시도별 1인당 국민소득의 동태적 수렴 현상을 분석한 것이다. 분석 결과 한국의 15개 시도별 1인당 소득은 전체적으로는 발산하고 있으나 그룹별로 보면 2개의 그룹별로 나뉘어 수렴하고 있다. 그 수렴하는 소득 수준에 따라 상위 소득 그룹으로서 서울 충남 전남 경북 울산 및 경남으로 구성된 제1그룹과 하위 소득 그룹으로서 부산 대구 인천 광주대전 경기 강원 충북 전북 제주 등 10 시도로 구성된 제2그룹으로 나뉘어 그룹 내 구성원 시도들끼리는 수렴하면서 그룹끼리는 발산하는 것으로 나타났다. 그룹 내 구성원 시도들끼리의 수렴 속도는 상위 소득 수준의 제1그룹의 수렴 속도는 높지 않으나 소득 수준이 낮은 제2그룹은 매우 높은 것으로 나타났다. 이처럼 2개의 수렴그룹으로 나뉘는 주된 이유는 지역별 1인당 누적 설비투자액 규모의 차이에 기인하는 것으로 분석되었다. 이 결과는 기존의 지역 균형 개발 전략하에서 지역간 소득 격차는 확대될 것이므로 지역간 균형발전을 위하여는 저소득 시도 그룹에 대하여 설비투자액을 증가시키기 위한 보다 근본적인 정책변화가 필요함을 시사하고 있다. This study is to investigate the long run convergence behavior of the per capita GDP of 15 provinces of Korea, by using the Phillips and Sul (2007) s newly developed log t convergence test method. The empirical result shows that the 15 provinces of Korea converge in two different groups according to the level of per capita GDP. The 1st group is composed of 5 provinces Seoul, Chungnam, Jeonam, Kyungbuk, Ulsan-Kyungnam and the 2nd group is composed of 10 provinces, such as Pusan, Daegu, Incheon, Kwangju, Daejeon, Kyunggi, Kangwon, Chungbuk, Jeonbuk, Jeju. About the speed of convergence among the member provinces within the group, the 2nd group has higher than the 1st group. By using multinomial logit regression, the main reason of this group convergence is analyzed as the difference among provinces in per capita cumulative investment in the region.
한국의 1인당 지역내총생산(GRDP)의 수렴에 대한 연구
최두열 ( Doo Yull Choi ),안시온 ( Sion An ) 한국재정정책학회 2014 財政政策論集 Vol.16 No.3
This study is to investigate the long run convergence behavior of the per capita GRDP of 15 provinces of Korea, by using the Phillips and Sul (2007)``s newly developed log convergence test method. The empirical result shows that the 15 provinces of Korea converge in two different groups according to the level of per capita GRDP. The 1st group is composed of 5 provinces - Seoul, Chungnam, Jeonam, Kyungbuk and Ulsan-Kyungnam and the 2nd group is composed of 10 provinces, such as Pusan, Daegu, Incheon,Kwangju, Daejeon, Kyunggi, Kangwon, Chungbuk, Jeonbuk and Jeju. About the speed of convergence among the member provinces within the group, the 2nd group has higher than the 1st group. By using multinomial logit regression, the main reason of this group convergence is analyzed as the difference among provinces in equipment investments(proxied by per capita cumulative investment) rather than the per capita human capital (proxied by years of schooling) in the region.
황진영 ( Jin Young Hwang ),이선호 ( Sun Ho Lee ),안시온 ( Si On An ) 한국재정정책학회 2016 財政政策論集 Vol.18 No.1
This paper examines the current situation of household debt in Daejeon and Chungnam and analyzes the impacts of household debt on consumption using time series data. Household debts of Daejeon and Chungnam are not relatively serious compared to other regions, we are necessary to pay attention to rapidly rise of household debts in these regions. In this point, we use two types of empirical analysis that are using quarterly data from 2003 to 2014 and monthly data from December 2007 to February 2015. Based on the results of ARDL bounds test approach, household debt does not have statistically significant impacts on consumption both long-run and short-run in all models. Exceptionally, the long-run impact of other loans of depository financial institution on the sales index at large retail stores is negative and statistically significant in Daejeon. The results suggest that the household debt does not induce the impacts increasing production and employment by increasing consumption in Daejeon and Chungnam.