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Online Video Recommendation through Tag-Cloud Aggregation
Jonghun Park,Sang-Jin Lee,Sung-Jun Lee,Kwanho Kim,Beom-Suk Chung,Yong-Ki Lee IEEE 2011 IEEE multimedia Vol.18 No.1
<P>A framework for recommending online videos operates by constructing user profiles as an aggregate of tag clouds and generating recommendations according to similar viewing patterns.</P>
엑츄에이터 시스템의 모터와 기어에 대한 소음 영향성에 관한 연구
박종훈(Jonghun Park),김수현(Soohyeon Kim) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
This paper proposes the analysis method for noise level of the actuator system, composed of motor and gears. The actuator system, one of the components of the automobile, has still some reliability problems due to operational performance, noise level, leakage. Among these issues, the noise level has been especially focused for customers to ensure a more comfortable in driving the car. For actuator system, in order to reduce the negative effects such as noise and vibrations, the influence of not only the motor noise but also gear noise should be considered. In this paper, we propose the method for analyzing the frequency level step by step from the motor to the end of the gear. In order for this achievement, structure of the designed actuator system was described and the frequency was theoretically analyzed. And the experimental equipment was configured to measure the noise level and noise factors of the actuator.