• Journal of Korea Society of Industrial Information Systems
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• v.10 no.4
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• pp.54-64
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• 2005

The study investigated genetic algorithms for the optimal control model of maximum height vertical jumping. The model includes forward dynamic simulations by the neural excitation-control variables. Convergence of genetic algorithms is very slow. In this paper the micro genetic algorithm(micro-GA) was used to reduce the computation time. Then a near optimal solution from micro-GA was an initial solution for VF02, which is one of well-developed and proven nonlinear programming algorithms. This approach provided the successful optimal solution for maximum-height jumping without a reasonable initial guess.

• Journal of the Korean Society for Precision Engineering
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• v.14 no.7
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• pp.59-66
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• 1997

A general procedure for a motion capture and mimic system has been delineated. Utilizing sensors operated in the magnetic fields, complicated and optimized movements are easily digitized to analyze and repreduce. The system consists of a motion capture module, a motion visualization module, a motion plan module, a motion mimic module, and a GUI module. Design concepts of the system are modular, open, and user friendly to ensure the overall system performance. Custom-built and/or off-the-shelf modules are ease- ly integrated into the system. With modifications, this procedure can be applied for complicated motion controls. This procedure is implemented on tracking a head and balancing a pole. A neural controller based on this control scheme dtilizing human motions can easily evolve from a small amount of learning data.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.11a
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• pp.158-159
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• 2009

감성은 동일한 대상에 대해서도 개인의 생활경험에 따라 다양하게 나타나며 시간과 환경에 따라 변화한다. 감성은 개인의 생활경험을 바탕으로 환경 자극에 직관적, 순간적으로 반응하기 때문에, 뇌의 복잡한 정보처리단계를 거치지 않으므로 그 개인은 느낀 감성을 잘 설명할 수 없고, 이러한 이유로 뚜렷한 심리반응이 유도되지 않으며, 뇌가 어떻게 생각하느냐에 따라 반응하는 신체반응 또한 미약할 수밖에 없다. 결론적으로, 감성은 종족유지를 위한 본능에 관련되어 직관적으로 나타나며, 그 측정방법도 이러한 차원에서 시도되어야 할 것이다. 본 연구에서는 행동인체운동역학에 기초하여 감성형 콘텐츠의 감성자극에 의한 인체 흉선의 생명에너지 흐름 제어력 변화를 이용하여 콘텐츠로부터 유발되는 감성을 측정하는 방법을 제안하고자 한다.

• 한국체육학회지인문사회과학편
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• v.58 no.6
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• pp.449-459
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• 2019

The purpose of this study is to identify how postural mechanics affects postural control on balance and stability by using frequency analysis technique from the kinematic data acquired during the one leg standing posture. For this purpose, the experimental group consisted of two groups, the normal group (n=6) and the national Gymnastics group (n=6). Displacement data of CoP were analyzed by frequency analysis of rambling (RM) and trembling (TR) by FFT signal processing. As a results, there was a significant difference in evaluating the stabilization index between the two groups with the eyes open and closed one leg stnading (p <.05). The cause of the difference was found to be the output of the maximum amplitude of RM (f1) and TR (f2) (p <.05). In particular, in the low frequency RM of 8-9 Hz, which is a natural frequency of signal wave involved in postural feedback feedback, the main frequency appeared to be performs the exercise mechanism of stable brain posture control. And in the high frequency TM of 120-135 Hz, it is considered that the adaptation of the reflective muscle response is minimized to minimize posture shaking. In conclusion, this study provides evidence for the intrinsic main frequencies according to the postural control ability which affects the CNS in one leg standing.