http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Design of Virtual Platoon Control System using Augmented Reality to AssistWelfare Vehicle Users
Ryota Kimura,Nobutomo Matsunaga,Hiroshi Okajima,Gou Kotaki 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
Recently, welfare vehicles are widely used among the elderly and the aged. However, it is not easy for inexperienced aged to control the welfare vehicle in narrow places such as elevators and narrow corridors. In this paper, driving assistance system for the welfare vehicle which is maneuverable by Augmented Reality (AR) is proposed. In addition, the proposed control system is assessed by trial runs. In the system, the cognitive ability from the objective view point is enhanced by AR. First, the virtual platoon control is outlined with a virtual preceding vehicle and a real following vehicle. The driver rides on the following vehicle and controls using the virtual preceding vehicle on Head Mounted Display(HMD) . The virtual preceding vehicle projected on a HMD steered virtually with an objective viewpoint, and the real vehicle is robust controlled so as to follow the virtual preceding vehicle. Finally, the experimental driving in narrow space using proposed assistance system with AR is evaluated by beginners and a expert user.
Application of MIR-FEL Irradiation to Selectively Excite Phonons in Wide-gap Semiconductors
Kyohei Yoshida,Taro Sonobe,M. A. Bakr,Y. W. Choi,Ryota Kinjo,M. Omer,Masato Takasaki,Satoshi Ueda,Naoki Kimura,Keiichi Ishida,Kai Masuda,Toshiteru Kii,Hideaki Ohgaki 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.51
A mid-infrared free electron laser (MIR-FEL) (5 - 20 μm) facility (KU-FEL: Kyoto University Free Electron Laser) was constructed to aid in various energy science researchers at the Institute of Advanced Energy, Kyoto University. In May 2008, the first power saturation at 13.2 μm was achieved. A pilot application to evaluate selective phonon excitation processes in solid materials by irradiating with MIR-FEL was implemented, and a preliminary experiment without FEL irradiation was conducted. N-doped silicon carbide (SiC) was selected as a sample material due to its unique electrical property where the lattice vibration and electronic structure are coupled. Two peaks at 1.8 - 2.4 eV and 2.4 - 2.8 eV, which showed strong temperature dependences in both their intensities and peak energy, were observed. These tendencies could be explained by a donor-acceptor pair luminescence (DAP) model with impurity and defects in the SiC sample. The results imply that we can verify the selective phonon excitation by investigating the change of PL spectrum introduced by MIR-FEL irradiation.
Yuji Kasukawa,Naohisa Miyakoshi,Michio Hongo,Yoshinori Ishikawa,Daisuke Kudo,Ryota Kimura,Yuichi Ono,Jumpei Iida,Chiaki Sato,Yoichi Shimada 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.5
Study Design: Retrospective and comparative study. Purpose: We assessed surgical treatment outcomes in patients with thoracic myelopathy due to ossification of the ligamentum flavum (OLF), and OLF combined with ossification of the posterior longitudinal ligament (OPLL) or vertebral fracture (VF) at the same level. Overview of Literature: OLF and OPLL cause severe thoracic myelopathy. Osteoporotic VF commonly occurs at the thoracolumbar junction. There have been no investigations of thoracic myelopathy due to OLF and VF. Methods: Forty patients were divided among three groups: the OLF group (n=23): myelopathy due to OLF, the OLF+OPLL group (n=12): myelopathy due to OLF and OPLL, and the OLF+VF group (n=5): myelopathy due to OLF and VF. We recorded OLF, OPLL, and VF sites and operative procedures. Each patient’s neurological status, according to the Japanese Orthopaedic Association (JOA) score, and walking ability were evaluated pre- and postoperatively. Results: Patients in the OLF+OPLL group were significantly younger than those in the other two groups. The preoperative JOA score was significantly lower in the OLF+VF than OLF group. The final JOA score was significantly lower in the OLF+VF than OLF and OLF+OPLL groups. The JOA score recovery rate was significantly lower in the OLF+VF than OLF group. Final walking ability was significantly worse in the OLF+OPLL and OLF+VF groups than in the OLF group and significantly worse in the OLF+VF than OLF+OPLL group. Conclusions: Thoracic myelopathy due to OLF+VF occurs primarily in older females, who also exhibit worse preoperative and postoperative neurological status, and worse walking ability, than patients with thoracic myelopathy due to OLF or OLF+OPLL.