• 한국전산구조공학회논문집
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• 제20권3호
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• pp.371-377
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• 2007

본 논문에서는 진동대를 이용하여 고층 건축물의 수평진동에 대한 지각임계가속도를 측정하였다. 바람에 의한 초고층 건축물의 과도한 진동은 거주자들에게 시각차와 현기증 같은 불쾌감을 줄 수 있다. 초고층 건축물 거주자들에게 쾌적한 환경을 제공하기 위해서는 가속도를 제한할 필요가 있다. 초고층 건축물은 1차 고유주기에 지배적이다 본 연구진은 1차 고유주기를 재연하기 위해 진동대를 사용하여 사인파진동에서 실험을 수행하였다. 실험은 진동하우스를 제작하고, 건장한 40명의 피험자를 대상으로 실시하였다 40명의 피험자를 8명씩 5개조로 나누고, 특정주파수범위$(0.2Hz{\sim}1.2Hz)$에서 가속도를 증가시키면서 수평진동에 대한 인지도를 측정하였다. 수평진동실험으로 피험자들의 진동에 대한 인지도를 누적분포표로 만들고, $0{\sim}20%,\;21{\sim}40%,\;41{\sim}60%,\;61{\sim}80%,\;81{\sim}100%$의 누적분포에 대해 추세선을 그려서 성능평가곡선을 작성하였다.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.751-756
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• 2007

In this paper, perception threshold for horizontal vibration of tall buildings was investigated. After a comparative study of human comfort criteria for wind-induced vibration in foreign countries being made, perception threshold was recorded by increasing acceleration in the range of 0.2Hz through 1.2Hz of frequency in horizontal vibration experiments, and perception of subjects was examined by a proper questionnaire. Also, the results obtained from experiments of horizontal vibration were compared with Japanese standard(AIJES-A001-2004).

• 대한기계학회논문집A
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• 제31권6호
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• pp.686-693
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• 2007

To perceive body movement, the nervous system uses multi-sensory cues such as vision, vestibular signals, and somatosensation. Among the multi-sensory modality, the previous researchers reported that the lower limb somatosensation plays an important role on maintaining postural balance. In this study, we examined the contribution of somatosensory cues to linear motion perception by measuring the detection threshold of the direction of linear motion with and without lower limb somatosensory constraints. Six healthy male volunteers participated in randomly ordered 33 single sinusoidal acceleration trials with the stimulus at 0.25Hz with peak magnitude ranged from 0 to 8mG. After each stimulus, subjects reported their perceived direction of motion by button press. Results showed that the reduced lower limb somatosensation significantly increased perception threshold. Without constraints, mean threshold was $0.82{\pm}0.23mG$, while it was $1.23{\pm}0.35mG$ with reduced lower limb somatosensation. The results suggest that without visual cues, perception of the movement direction strongly depends on the lower limb somatosensory information.