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UWB is a short range (up to 10 m) wireless communication technology which provides high throughput with low transmission and high reliability. We developed a PHY prototype conformed to ECMA-368, one of UWB standards, and a network simulator for evaluating MAC throughput of ECMA-368. In this paper, we propose an evaluation method considering the characteristic of PHY, the channel model and the propagation...
We propose a delegation function on Web-based applications federated with a single sign-on system, in which users are authenticated by their electronic certificate, based on SAML protocol. The function enables a delegatee to access Web-based business applications instead of delegator. In order to realize the function, we first design the contents and issuing process of the electronic ''delegation...
In developmental research, tutoring behavior has been identified as scaffolding infants' learning processes. It has been defined in terms of child-directed speech (Motherese), child-directed motion (Motionese), and contingency. In the field of developmental robotics, research often assumes that in human-robot interaction (HRI), robots are treated similar to infants, because their immature cognitive...
This research addresses the challenge of developing an action learning model employing bottom-up visual attention. Although bottom-up attention enables robots to autonomously explore the environment, learn to recognize objects, and interact with humans, the instability of their attention as well as the poor quality of the information detected at the attentional location has hindered the robots from...
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