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        검색결과 4

        1.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In the era of the 4th Industrial Revolution, Logistic 4.0 using data-based technologies such as IoT, Bigdata, and AI is a keystone to logistics intelligence. In particular, the AI technology such as prognostics and health management for the maintenance of logistics facilities is being in the spotlight. In order to ensure the reliability of the facilities, Time-Based Maintenance (TBM) can be performed in every certain period of time, but this causes excessive maintenance costs and has limitations in preventing sudden failures and accidents. On the other hand, the predictive maintenance using AI fault diagnosis model can do not only overcome the limitation of TBM by automatically detecting abnormalities in logistics facilities, but also offer more advantages by predicting future failures and allowing proactive measures to ensure stable and reliable system management. In order to train and predict with AI machine learning model, data needs to be collected, processed, and analyzed. In this study, we have develop a system that utilizes an AI detection model that can detect abnormalities of logistics rotational equipment and diagnose their fault types. In the discussion, we will explain the entire experimental processes : experimental design, data collection procedure, signal processing methods, feature analysis methods, and the model development.
        4,000원
        2.
        2013.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 129년 역사를 가지고 있는 우체국의 지속성장을 위한 핵심역량을 IPA기법으로 재평가하여 역량 강화 방안의 방향을 제시하는 것이 목적이다. 이를 위해 전국에 분포한 394명의 우체국 구성원 설문조사를 활용하여 대응표본 t-검증(paired t-test)과 IPA 매트릭스 차이(gap) 분석을 실시하였다. 분석 결과 5개 역량군과 39개 세부 역량의 중요도-수행도 차이가 있는 것으로 조사되었다. 또한 IPA매트릭스의 영역별로 유지 11개, 집중
        5,800원
        3.
        2012.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        5,800원
        4.
        2019.06 KCI 등재 서비스 종료(열람 제한)
        This paper presents a 6-DOF relocalization using a 3D laser scanner and a monocular camera. A relocalization problem in robotics is to estimate pose of sensor when a robot revisits the area. A deep convolutional neural network (CNN) is designed to regress 6-DOF sensor pose and trained using both RGB image and 3D point cloud information in end-to-end manner. We generate the new input that consists of RGB and range information. After training step, the relocalization system results in the pose of the sensor corresponding to each input when a new input is received. However, most of cases, mobile robot navigation system has successive sensor measurements. In order to improve the localization performance, the output of CNN is used for measurements of the particle filter that smooth the trajectory. We evaluate our relocalization method on real world datasets using a mobile robot platform.