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정기수(Ki-Su Jung),노영식(Young-Shick Ro),강희준(Hui-Jun Kang),서영수(Young-Su Seo),윤승준(Seong-Jun Yun) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
본 논문은 네트워크를 통한 원격셰어 시스템을 구축하는 연구로써 무선 랜과 AP를 이용하여 독립 무선 네트워크를 구축하고, 이동로봇의 주변 환경에 대한 레이저 센서정보와 영상정보를 전송한다. 그리고 스테레오 카메라와 Head Mounted Display를 사용하여 원격지에서 입체감 있는 영상을 보며 조작을 할 수 있게 하였으며. Head Motion Tracking를 이 용해 이동로봇의 카메라를 별도의 조작 없이 컨트롤 가능하도록 방법을 제안하였다.
이동로봇 원격조작를 위한 인터넷기반 제어시스템에 관한 연구
노영식(Young-Shick Ro),강희준(Hee-Jun Kang),정기수(Ki-Su Jung) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, we construct the infrastructure for the teleoperating system of mobile robots. For the stable teleoperating system, we develope an algorithm that measure communication time delay on real-time. We propose the force-reflected teleoperation method that control the stiffness of joystick according to VFH(Vector Field Histogram). Also, an obstacle avoidance method using VFH is presented for the mobile robot to move to the indicated direction without collision. Experiments are conducted to demonstrate the feasibility of the proposed methods.
부분 간절제술을 시행한 랫드에서 간재생에 관한 이과두주 급성투여에 따른 영향
조진연 ( Jin Youn Cho ),송지예 ( Ji Yae Song ),안재범 ( Jae Bum Ahn ),김현석 ( Hyun Seok Kim ),김민수 ( Min Su Kim ),임현 ( Hyun Im ),임준성 ( Jun Sung Lim ),신동석 ( Dong Seok Shin ),김현철 ( Hyun Chul Kim ),정기수 ( Ki Soo Jung 한국가축위생학회 2006 韓國家畜衛生學會誌 Vol.29 No.1
Alcoholism and alcohol abuse are major public health concerns. This is linked to the injury of many organs, especially liver. Experiments were performed to know the acute effects of LeeKwaDoo(LKD) induced by two-third partial hepatectomy(PH) in rats. In liver samples, regeneration parameters and histological assessment were performed. For the blood biochemical study, the blood were assayed with AST, ALT. The portal branch of liver lobes was ligated in the male Sprague-Dowley rats, two-thirds partial hepatectomies were also performed. It was estimated bodyweight and relative liver weight for the index of liver For the marker of blood chemistry, we investigate the serum sample of rats and demonstrated the level of AST, ALT. Remaining tissues of liver developed as microscopic structures. Resection of the lobes in PH+LKD group resulted in a marked change of liver weight, blood chemistry and histological changes. The initiation of the proliferative response in PH group stimulated as well as reduction of the liver mass. On the other hands, the initiation of the proliferative response in PH+LKD group delayed. Eventually, both PH group and PH+LKD group was restored relative liver weigh after 7 day. In conclusion, the acute adminstration of LKD seems to inhibit the initial response of liver regeneration through alcohol effects.