Nobuyuki OGAWA


Utilization of Bio-Signals to Understand the Physiological States of e-Learners and Improve the Learning Contents
C. M. Althaff IRFAN Shusaku NOMURA Takaoi YAMAGISHI Yoshimasa KUROSAWA Kuniaki YAJIMA Katsuko T. NAKAHIRA Nobuyuki OGAWA Yoshimi FUKUMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/06/01
Vol. E94-D  No. 6  pp. 1235-1242
Type of Manuscript:  PAPER
Category: Educational Technology
Keyword: 
e-learningskin conductance levelskin conductance responseECGheart rate variability
 Summary | Full Text:PDF

3.5-GHz-Band Low-Bias-Current Operation 0/20-dB Step Linearized Attenuators Using GaAs-HBT Compatible, AC-Coupled, Stack Type Base-Collector Diode Switch Topology
Kazuya YAMAMOTO Miyo MIYASHITA Nobuyuki OGAWA Takeshi MIURA Teruyuki SHIMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1515-1523
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
wireless LANattenuatordiodesheterojunction bipolar transistors (HBTs)linearityintermodulation distortionlinearizationmonolithic microwave integrated circuit (MMIC)
 Summary | Full Text:PDF