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Design and Construction of the Cooperation Support Agent for Face-to-face Class and E-learning
Masaaki Kunishige,Misako Urakami,Seiji Shimizu,Yasukuni Okataku,Nobukazu Yoshioka 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
E-learning study mainly helps acquisitions of knowledge. However, the effect acquired from dialog on a face-to-face class is not expectable. Thus, Blended-learning which combined a face-to-face class and e-learning attracts attention. Although the blend of ideal Blended-learning should be used by learners on consideration of their capabilities and learning records, the realization is difficulty. In this paper, we proposed and built a mobile agent system which offers cooperation support with a face-to-face class and elearning. The mobile agents operating autonomously indicate the learner’s weak points and contents which should be learned from a learning plan (learning policy) given by the contents creator and a personal learning record. Therefore, the mobile agents can support the Blended-learning by creating the personal learning result data in consideration of personal capability and personal learning records.
Ship-to-Ship Radiocommunication Trial by Using Wireless LAN
Yasuyuki NIWA,Hisaya MOTOGI,Chihiro NISHIZAKI,Misako URAKAMI,Takahiro SETA,Mitsuru KOBAYASHI,Makiko MINAMI 국제이네비해양경제학회 2015 International Journal of e-Navigation and Maritime Vol.3 No.1
Seamless transfer of electronic information/data between ship-to-shore and vice versa and between ship-to-ship and shore-to-shore is being developed in the IMO e-Navigation strategy implementation plan (SIP). We have been focused on wireless LAN for ship-to-ship radiocommunication. In a former field radiocommunication trial, omni-directional antennas were used and a few hundred kbps throughput between two ships was measured, which was not enough for our research target (over 1Mbps). In order to get faster throughput, a field radiocommunication trial was carried out again with a few types of directional antennas and RSSI (Received Signal Strength Indication) and the throughput between two ships was measured simultaneously. As a result, multi-path (2-path) model affected by the reflection of the sea surface was confirmed and also the characteristics of the directional antennas such as half-power angle were confirmed, but the measured throughput was fast enough to meet our expectation.