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한무경,서정용 한국자기공명학회 2015 Journal of the Korean Magnetic Resonance Society Vol.19 No.2
The plant hormone auxin is involved in all stages of plant development. Aux/IAAs are the transcriptional repressors that bind to the Auxin Response Factors (ARFs) to regulate the gene expression upon auxin release. Aux/IAA have highly conserved C-terminal domains (domains III-IV) that mediate both homotypic and heterotypic interactions between Aux/IAA and ARF family proteins. Recent studies revealed that the conserved domains III-IV share a common β-grasp fold that oligomerizes in a front-to-back manner.1,2,3 In particular, Aux/IAA contains a mobile insert helix in the domain III-IV, whereas ARFs do not. Here, we investigated the dynamics of the insert helix using paramagnetic NMR spectroscopy. The insert helix exhibited fast motions in the ps-ns time scale from 15N relaxation data, but the amplitude of the motion is likely limited to the local neighborhood. Our result suggests that the motion of the helix may have functional implications in protein-protein interactions for transcriptional regulations.
혼합윤활조건에서 마이크로딤플의 크기에 따른 마찰특성평가
이승훈,최시근,김규만,채영훈(Younghun Chae),한무경,이영춘 한국트라이볼로지학회 2008 한국트라이볼로지학회 학술대회 Vol.2008 No.11
The current study investigated the size effect of Micro-scale surface pattern to understand the potential benefits of friction reduction and durability in relative contact. Also, reduction of friction is therefore considered to be a necessary requirement for improved efficiency of machine. In this paper attempts to investigate the effect of density for micro-scale dimple pattern on bearing steel flat mated with pin-on-disk. We demonstrated the lubrication mechanism for a Stribeck curve, which has a relationship between the friction coefficient and a dimensionless parameter for lubrication condition. It is found that friction coefficient is depended on the density of surface pattern. It was thus verified that micro-scale dimple could affect the friction reduction considerably under mixed and hydrodynamic lubrication conditions from based on friction map. Lubrication condition regime has an influence on the friction coefficient induced the density of micro dimple.
김나영(Nayoung Kim),유원대(Wondae Yoo),이용일(Yongil Lee),정승은(Seungeun Chung),한무경(Mookyoung Han),여운승(Woonseung Yeo) 한국HCI학회 2009 한국HCI학회 학술대회 Vol.2009 No.2
User interface design environment has been known to be part of important elements in user experience and play, and its significance of functionalities are growing bigger each year. In present day, use of intuitive user interface design are on demand. Player can expect to get a new experience that they can not get from other exiting or similar form of games. For the better user experience, essential use of intuitive game play is necessary along with its perceptive user interface. This paper describes intuitive game environment design which will enhance user experience with use of brainwave signal for Brain Computer Interface. 사용자들에게 새로운 경험을 전달해주는 중요한 요소인 게임 인터페이스는 게임 플레이어에게 새로운 경험을 전달해주는 중요한 요소이며, 그 역할이 점점 커지고 있다. 최근에는 게임 플레이어의 움직임을 게임 컨트롤에 직접 반영하는 새로운 게임 인터페이스가 주목받고 있으며, 이렇게 직관성이 강화된 게임 인터페이스를 사용한 체감형 게임은 플레이어에게 컨트롤러를 조작하는 방식의 기존 게임보다 더 나은 몰입감을 제공하고 있다. 게임 플레이어들은 비슷한 형태로 반복되던 기존의 인터페이스에서 얻을 수 없는 새로운 경험을 원하고 있으며, 플레이어에게 다른 사용자 경험을 제공하기 위해서는 직관성이 강화된 새로운 게임 인터페이스와 더불어 그에 적합한 게임 컨텐츠가 필요하다. 본 논문에서는 뇌파를 이용한 Brain Computer Interface를 활용하여 직관적인 게임 인터페이스를 개발하고, 개발된 인터페이스를 통해 플레이어의 경험을 최대한 높일 수 있는 게임 환경 디자인을 제안해 보고자 한다.