• PNF and Movement
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• v.17 no.2
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• pp.237-243
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• 2019

Purpose: The purpose of the present study was to investigate the effects of toe wedges on the gait ability of adolescents with spastic diplegic cerebral palsy. Methods: Six adolescents with spastic diplegic cerebral palsy participated in this study. During the participants walked with- and without toe wedges, the gait ability was analyzed using the electronic walkway system. Gait parameters, including velocity, cadence, step length, stride length, single support time, and double support time, were collected and analyzed. Results: When the participants walked with toe wedges, there were significant improvements in gait velocity, cadence, and double support time compared to those without toe wedges (p<0.05). However, there were no significant differences in step length, stride length, and single support time. Conclusion: Toe wedges may have a positive effect on the gait ability of adolescents with spastic diplegic cerebral palsy. However, it is necessary to conduct high-quality studies to identify the effects of toe wedges.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.977-978
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• 2011

21세기 초부터 휴대폰으로 인터넷에 접속하는 다양한 서비스가 제공되었으며 스마트폰 사용량은 급증하였고 위협요소 또한 많아졌다. 본 논문은 스마트 폰을 위협하는 악성코드의 종류와 감염경로를 파악하고 그 사례를 통해 문제점을 제시한다.

• Bulletin of the Korean Chemical Society
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• v.19 no.4
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• pp.397-399
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• 1998

• PNF and Movement
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• v.20 no.1
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• pp.67-72
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• 2022

Purpose: The aim of this study was to compare trunk and lower extremity muscle activity during deadlift on stable - and unstable surfaces. Methods: Twenty healthy men participated in this study. The participants performed deadlift exercise on both a stable surface and an unstable surface. During the deadlift, the activities of the trunk and lower extremity muscle were collected by using electromyography. Results: The results showed that the electromyographic activity of the gluteus maximus significantly increased during deadlift on an unstable surface compared to on a stable surface (p <0.05). However, in the electromyographic activities of the rectus femoris, biceps femoris, and erector spinae, there were no significant differences (p >0.05). Conclusion: The finding that the electromyographic activity of the gluteus maximus increases significantly during deadlift on an unstable surface compared to stable one could be used to develop an efficient exercise program.

• Journal of the Korean Society of Industry Convergence
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• v.21 no.6
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• pp.369-378
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• 2018

This study proposes a new approach to real time implimemtation of shape recognition technology of die casting and forging parts based on robot vision for smart factory. The proposed shape recognition and inspection technology for forging and die casting parts is very useful for manufacturing process automatiom and smart factory including external form's automatic inspection of machanical or electronic panrs for the precision verification. The reliabiblity of proposed technology Ihas been illustrated through experiments.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.972-974
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• 2011

최근 인터넷을 통한 개인정보 유출사례가 빈번히 발생하고 있으며, 유출된 개인정보는 변경 및 회수가 어렵고 제 2,3의 범죄로 이어지고 있다. 최근 국내 주요 사이트 및 데이터베이스의 개인정보 유출사고가 빈번했으며, 그에 대한 대책수립이 이루어지지 않은 상황임에도 불구하고 국내 포털사이트는 물론 소규모 웹 사이트에서도 주민등록번호(개인식별번호)를 요구하고 있다. 본 논문은 국내와 미국의 사례를 통해 개인 식별번호 관리 방법에 대해 비교하고 있다.

• Journal of the Korean Society of Industry Convergence
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• v.22 no.2
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• pp.209-218
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• 2019

This study proposes a new approach to Control the Orientation and position based on obstacle avoidance technology by multi sensors fusion and autonomous travelling control of mobile robot system for implimentation of Smart FA. The important focus is to control mobile robot based on by the multiple sensor module for autonomous travelling and obstacle avoidance of proposed mobile robot system, and the multiple sensor module is consit with sonar sensors, psd sensors, color recognition sensors, and position recognition sensors. Especially, it is proposed two points for the real time implementation of autonomous travelling control of mobile robot in limited manufacturing environments. One is on the development of the travelling trajectory control algorithm which obtain accurate and fast in considering any constraints. such as uncertain nonlinear dynamic effects. The other is on the real time implementation of obstacle avoidance and autonomous travelling control of mobile robot based on multiple sensors. The reliability of this study has been illustrated by the computer simulation and experiments for autonomous travelling control and obstacle avoidance.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2019.10a
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• pp.223-223
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• 2019

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2020.10a
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• pp.232-232
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• 2020

• Journal of the Korean Society of Industry Convergence
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• v.22 no.3
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• pp.337-351
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• 2019

We Proposed a new technology to develop vertical type multi-joint robot system enable to adapt in high temperature environment. The main contents is a new approach to design a vertical type articulated robot with prismatic joint and analysis of thermal for process automation of casting and forging. The proposed robot is suitable to use handling working parts of casting and forging. for the manufacturing process of forging and casting. The reliability is illustrated that the proposed technique is more stable and robust than the conventional system. This study is concerned with an analytical methodology of kinematic computation for 7 DOF manipulators for optimization of forging manufacturing process.