Author Search Result

[Author] Mitsuhiro NAKAMURA(2hit)

1-2hit
  • Unified Network Service Control Architecture for Web Content Adaptation Services

    Kazumasa USHIKI  Yoichiro IGARASHI  Takeshi YASUIE  Mitsuhiro NAKAMURA  Mitsuaki KAKEMIZU  Masaaki WAKAMOTO  Hiroyuki TANIGUCHI  Shinya YAMAMURA  

     
    PAPER-CDN Architecture

      Vol:
    E86-B No:6
      Page(s):
    1768-1777

    This paper proposes an IPv6-based network service control architecture for providing a variety of customized services to both stationary and mobile users in a unified manner. Recent trends in the Internet indicate its evolution into a combination of broadband and mobile-aware networks. One means of providing users with cost-efficient customized services in such large-scale IP networks is to introduce flexible network intelligence capabilities for managing network resources and services. The purpose of the proposed network architecture is to upgrade the Internet so that it functions more intelligently by using service profiles (data sets containing the service specifications of individual users) and mechanisms for their distribution. It is possible to make network services intelligent by using network application programming interfaces (APIs), which have been under study in international standardization groups. We apply the open API concept to our proposed architecture to produce a wide variety of services. We also propose a new open API to support Web content adaptation services, which add value to Web access.

  • Automatic Evaluation of Trainee Nurses' Patient Transfer Skills Using Multiple Kinect Sensors

    Zhifeng HUANG  Ayanori NAGATA  Masako KANAI-PAK  Jukai MAEDA  Yasuko KITAJIMA  Mitsuhiro NAKAMURA  Kyoko AIDA  Noriaki KUWAHARA  Taiki OGATA  Jun OTA  

     
    PAPER-Educational Technology

      Vol:
    E97-D No:1
      Page(s):
    107-118

    To help student nurses learn to transfer patients from a bed to a wheelchair, this paper proposes a system for automatic skill evaluation in nurses' training for this task. Multiple Kinect sensors were employed, in conjunction with colored markers attached to the trainee's and patient's clothing and to the wheelchair, in order to measure both participants' postures as they interacted closely during the transfer and to assess the correctness of the trainee's movements and use of equipment. The measurement method involved identifying body joints, and features of the wheelchair, via the colors of the attached markers and calculating their 3D positions by combining color and depth data from two sensors. We first developed an automatic segmentation method to convert a continuous recording of the patient transfer process into discrete steps, by extracting from the raw sensor data the defining features of the movements of both participants during each stage of the transfer. Next, a checklist of 20 evaluation items was defined in order to evaluate the trainee nurses' skills in performing the patient transfer. The items were divided into two types, and two corresponding methods were proposed for classifying trainee performance as correct or incorrect. One method was based on whether the participants' relevant body parts were positioned in a predefined spatial range that was considered ‘correct’ in terms of safety and efficacy (e.g., feet placed appropriately for balance). The second method was based on quantitative indexes and thresholds for parameters describing the participants' postures and movements, as determined by a Bayesian minimum-error method. A prototype system was constructed and experiments were performed to assess the proposed approach. The evaluation of nurses' patient transfer skills was performed successfully and automatically. The automatic evaluation results were compared with evaluation by human teachers and achieved an accuracy exceeding 80%.

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