Yutaka NAKAMURA


A Workload Assignment Policy for Reducing Power Consumption in Software-Defined Data Center Infrastructure
Takaaki DEGUCHI Yoshiaki TANIGUCHI Go HASEGAWA Yutaka NAKAMURA Norimichi UKITA Kazuhiro MATSUDA Morito MATSUOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/02/01
Vol. E99-B  No. 2  pp. 347-355
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
data centerpower consumption reductionworkload assignmentair conditionercomputational fluid dynamics
 Summary | Full Text:PDF(4.2MB)

A New Approach to Identify User Authentication Methods toward SSH Dictionary Attack Detection
Akihiro SATOH Yutaka NAKAMURA Takeshi IKENAGA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/04/01
Vol. E98-D  No. 4  pp. 760-768
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security―Against Cyberattacks―)
Category: Authentication
Keyword: 
SSH dictionary attackuser authentication methodflow analysisnetwork operation
 Summary | Full Text:PDF(537.9KB)

Development of Single Sign-On System with Hardware Token and Key Management Server
Daiki NOBAYASHI Yutaka NAKAMURA Takeshi IKENAGA Yoshiaki HORI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/05/01
Vol. E92-D  No. 5  pp. 826-835
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Authentication and Authorization Techniques
Keyword: 
single sign-onhardware tokenkey management serverauthenticationsecurity
 Summary | Full Text:PDF(795.9KB)

An Analysis of WWW Server Status by Packet Monitoring
Yutaka NAKAMURA Ken-ichi CHINEN Suguru YAMAGUCHI Hideki SUNAHARA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2000/05/25
Vol. E83-D  No. 5  pp. 1012-1019
Type of Manuscript:  Special Section PAPER (Special Issue on Next Generation Internet Technologies and Their Applications)
Category: 
Keyword: 
server managementserver statereal time measurementpacket monitoringENMA
 Summary | Full Text:PDF(794.3KB)

Characterization of Monotonic Multiple-Valued Functions and Their Logic Expressions
Kyoichi NAKASHIMA Yutaka NAKAMURA Noboru TAKAGI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1998/06/25
Vol. E81-D  No. 6  pp. 496-503
Type of Manuscript:  PAPER
Category: Computer Hardware and Design
Keyword: 
p-valued functionsmonotonicitypartial-ordering relationlogic expression
 Summary | Full Text:PDF(591.7KB)