Katsuyuki YAMAZAKI

Development and Evaluation of Sensor Network Using Ultrasonic Distance Sensors for Population Monitoring
Hiroshi YAMAMOTO  Shohei MINOMI  Katsuichi NAKAMURA  Katsuyuki YAMAZAKI 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2012/10/01
Vol. J95-B  No. 10  pp. 1273-1283
Type of Manuscript: Special Section PAPER (Special Section on Advanced Internet Architecture Applicable to Diverse Social Requirements)
Category: 
Keyword: 
sensor network,  digital signage,  ultrasonic distance sensor,  pedestrian traffic measurement, 
  Summary |  Full Text(in Japanese):PDF (1.3MB)
The Development and Evaluation of Walking Paths Estimation System Using Android Device and Sensors with Vector Map Matching
Hikaru OOKURA  Hiroshi YAMAMOTO  Katsuyuki YAMAZAKI 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2012/05/01
Vol. J95-D  No. 5  pp. 1081-1090
Type of Manuscript: Special Section PAPER (Special Section on Technologies and Applications of the Internet)
Category: 
Keyword: 
vector map,  orientation sensor,  turn,  elevator,  walking path, 
  Summary |  Full Text(in Japanese):PDF (789.2KB)
The Evaluation of Communication Characteristic of Cellular Network and Implementation and Evaluation of Retransmission-Controlled TCP
Shuta YOKOYAMA  Hiroshi YAMAMOTO  Katsuyuki YAMAZAKI 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2012/05/01
Vol. J95-D  No. 5  pp. 1133-1141
Type of Manuscript: Special Section PAPER (Special Section on Technologies and Applications of the Internet)
Category: 
Keyword: 
TCP,  real-time transmission,  wireless sensor networks,  hilly and mountainous area,  cellular networks, 
  Summary |  Full Text(in Japanese):PDF (945.3KB)
A Study of Digital Signage Attention Estimation System with Ultrasonic Distance Sensor
Shohei MINOMI  Hiroshi YAMAMOTO  Katsuichi NAKAMURA  Katsuyuki YAMAZAKI 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2012/05/01
Vol. J95-D  No. 5  pp. 1193-1195
Type of Manuscript: Special Section LETTER (Special Section on Technologies and Applications of the Internet)
Category: 
Keyword: 
sensor network,  digital signage,  ultrasonic distance sensor,  pedestrian traffic measurement, 
  Summary |  Full Text(in Japanese):PDF (748.4KB)
The Development of NS2 Module for High-Speed Internet Satellite (WINDS)
Hiroshi YAMAMOTO  Genki KOMADA  Katsuichi NAKAMURA  Takashi TAKAHASHI  Katsuyuki YAMAZAKI 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2011/10/01
Vol. J94-B  No. 10  pp. 1363-1372
Type of Manuscript: Special Section PAPER (Special Section on Internet Architecture for Smart Society)
Category: 
Keyword: 
WINDS (Kizuna),  satellite communication,  packet loss pattern,  network simulator, 
  Summary |  Full Text(in Japanese):PDF (681.9KB)
A Method for Inferring BGP Link Failures Based on Prefix Variation
Masafumi WATARI  Atsuo TACHIBANA  Shigehiro ANO  Katsuyuki YAMAZAKI 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2011/06/01
Vol. J94-B  No. 6  pp. 747-755
Type of Manuscript: PAPER
Category: 
Keyword: 
Internet,  Border Gateway Protocol (BGP),  failure detection, 
  Summary |  Full Text(in Japanese):PDF (632KB)
Development and Evaluation of Population Monitoring Network with Ultrasonic Distance Sensors
Kazuya TAKAHASHI  Katsuichi NAKAMURA  Katsuyuki YAMAZAKI 
Publication:   D - Abstracts of IEICE TRANSACTIONS on Information and Systems (Japanese Edition)
Publication Date: 2010/06/01
Vol. J93-D  No. 6  pp. 1065-1066
Type of Manuscript: LETTER
Category: 
Keyword: 
sensor network,  ultrasonic sensor,  ubiquitous network,  crowd observation,  distance measurement, 
  Summary |  Full Text(in Japanese):PDF (151.5KB)
Proposition and Evaluation of Fast Restoration Method for BGP
Masafumi WATARI  Yuichiro HEI  Shigehiro ANO  Katsuyuki YAMAZAKI 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2009/10/01
Vol. J92-B  No. 10  pp. 1652-1660
Type of Manuscript: Special Section PAPER (Special Issue on Secure and Sustainable Internet Architecture)
Category: 
Keyword: 
BGP,  inter-domain routing,  fast restoration,  high reliability, 
  Summary |  Full Text(in Japanese):PDF (802.1KB)