• Transportation Technology and Policy
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• v.2 no.3
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• pp.171-190
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• 2005

• Proceedings of the IEEK Conference
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• 2001.06e
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• pp.13-16
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• 2001

본 논문에서는 인간의 생체 임피던스를 이용하여 인간의 팔 운동을 추정하고자 한다. 생체 신호를 이용하여 인간의 운동을 추정하기 위해서는 먼저 생체 신호와 인간의 운동 사이의 정량적인 관계를 구해야 하며 특히, 다자유도 운동의 추정에는 생체 신호간의 간섭등을 고려하여야 한다. 본 논문에서는 먼저 일자유도 운동실험을 통해 생체 임피던스와 인간 팔 관절의 회전각 사이의 선형성을 고찰한다. 그리고, 다자유도 측정시에 발생하는 근육간의 결합성과 방향성의 문제에 대해 주파수 분할 측정법을 도입하여 팔의 다자유도 운동을 추정하였다. 마지막으로, 실제의 로봇을 제어하는데 응용하였다.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.415-417
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• 1998

인터넷을 통한 다자 참여 게임서비스 분야는 최근 급격한 사용자 증가 추세를 보이고 있다. 그러나 관련 기술의 부족과 개발의 어려움으로 인해 이러한 서비스를 제공하는 웹사이트가 현재 국내에서 소개되고 있지 않다. 본 논문에서는 웹브라우저만으로 간편하게 게임을 즐길 수 있는 다자 참여 게임 시스템의 개발을 목적으로 순수 자바 기반의 그룹통신 기술을 이용하여 안정적이고 지속적인 서비스를 제공해주는 플랫폼 독립적인 범용 게임서버 시스템을 설계하고 이를 카드게임센터 개발에 적용하여 쉽게 웹 기반의 다자참여 게임을 개발할 수 있음을 제시하였다. 또한 다양한 종류의 카드게임을 체계적이고 일관성있는 인터페이스로 제공하기 위해 각 종류별 카드게임의 기반이 되는 컴포넌트들을 설계한 후 이를 확장하여 구체적 게임으로 개발하는 방안을 제시하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.493-494
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• 2008

• Journal of the Korea institute for structural maintenance and inspection
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• v.10 no.4
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• pp.175-184
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• 2006

Two methods of the nonlinear static pushover analysis have been presented for the performance-based seismic design and evaluation of MDOF continuous bridges. Guidelines for buildings presented in FEMA-273 applying the Displacement Coefficient Method (DCM) and in ATC applying the Capacity Spectrum Method(CSM) have been modified for MDOF bridges. Two methods are compared with the time- history analysis. The lateral load distribution pattern for seismic loads has been examined in the static pushover analysis. The force-based fiber frame finite element has been implemented in the modeling of reinforced concrete piers.

• Journal of the Korea Convergence Society
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• v.11 no.10
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• pp.219-224
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• 2020

Industrial mixers to homogeneously blend particulate materials have been developed and widely used in various industries. However, most industrial mixers have at most two-degree-of-freedom for the operation, which limits the range of operation parameter selection for optimal blending. This paper proposes a multi-degree-of-freedom robotic mixer designed by converging a conventional drum blender and a robotic manipulator and evaluated its performance in a virtual operating environment. Discrete element simulations were conducted for mixing performance evaluation. The numerical results showed that the proposed mixer design exhibits a better mixing performance than conventional ones.

• Journal of the Korean Geographical Society
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• v.39 no.2
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• pp.256-268
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• 2004

Korea remains one of the few countries in the world that has not participated in any formal regionalism except its first FTA with chile which was just recently concluded. The lack or regionalism in Northeast Asia reflects post-war national policies that favored international export markets as an engine of economic growth. Based on a survey of 50 firms in Korea, this paper examines the relationship between regionalism and multilateralism in terms of computer industry. The results show that the industry favors international rather than regional markets for its continued export growth. According to the results, accelerated trade liberalization measures through the mutilateralism of the WTO dilute the demand for and negative impacts from regionalism. Overall, the results suggest that the Korean computer industry supports a trading system with a strong multilateral commitment based on non-discrimination.

• Journal of the Earthquake Engineering Society of Korea
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• v.8 no.6 s.40
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• pp.13-22
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• 2004

Ductiluty factor has played an important role in seismic design as it is key component of response modification factor(R). In this stuty, ductility factors() are calculated by multiplying ductility factor for SDOF systems() and MDOF modification factors(). Ductility factors() for SDOF systems are computed from nonlinear dynamic analysis undergoing different level of displacement ductiluty demands and period when subjected to a large number of recorded earthquake ground motions. The MDOF modification factors() are proposed to account for the MDOF systems, based on previous studies. A total of 108 prototype steel frames are designed to investigate the ductility factors considering the number of stories(4, 8 and 16-stories), framing system(Perimeter Frames, PF and Distributed Frames, DF), failure mechanism(Strong-Column Weak-Beam, SCWB and Weak-Column Strong-Beam, WCSB), soil profiles(SA, SC and SE in UBC 1997) and seismic zone factors(Z=0.075, 0.2 and 0.4 in UBC 1997). It is shown that the number of stories, failure mechanisms (SCWB, WCSB), and soil profiles have great influence on the ductility factors, however, the structural system(Perimeter frames, Distributed frames), and seismic zones have no influence on the ductility factors.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.8 no.4
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• pp.269-277
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• 2010

Various multilateral approaches to the nuclear fuel cycle have been proposed in order to suppress the expansion of sensitive fuel cycle technology. In order to prepare for the future multilaterallization of the nuclear fuel cycle, existing multilateral spent fuel management programs are analyzed. A trial multilateralization of a domestic R&D facility for the back end of the nuclear fuel cycle is proposed and its challenges, possibilities and implementation strategy are discussed.

• Journal of the Korea Computer Graphics Society
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• v.1 no.2
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• pp.273-278
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• 1995

실시간 3차원 렌더링(real-time 3D rendering)은 멀티미디어와 그래픽 반도체 기술의 발달로 PC와 게임전용기에서 급속히 확산되고 있는 추세이며 응용소프트웨어의 개발과 이를 지원할 수 있는 기술 개발은 매우 중요한 과제이다. 본 논문에서는 다자참여 (multi-user)와 다목적(multi-purpose) 활용이 가능한 고성능 3차원 시뮬레이션 엔진 소프트웨어의 구현 방법을 제시한다. 또한 데이터베이스 구축을 하기위한 도구의 구성과 다목적 활용을 위한 재구성(reconfiguration) 방법을 제시한다.