Detailed Information

Research Field/Keywords for Research Field

• traffic flow, academic information systems, unified authentication systems

Education

• 1982/03, Departmentn of Physics, Graduated
• 1984/03, Master Course, Completed
• 1987/04, Doctor Course, Completed

Employment Experience

• 1988/04 - 1990/03 Postdoctoral Fellowships of Japan Society for the Promotion of Science Kyoto University
• 1990/04 - 2000/03 Associate Professor, Saga University
• 2000/04 - 2000/09 Professor, Information Science, Faculty of Science and Engineering, Saga University
• 2000/10 - 2006/01 Professor, Saga University
• 2000/11 - 2006/01 Abolition organization, Saga University
• 2006/02 - 2013/09 Professor, Computer and Network Center, Saga University
• 2006/04 - 2014/03 Computer and Network Center, Saga University
• 2013/10 -  *  Professor, Information Science, Graduate School of Science and Engineering, Saga University

Field of Specialization

• Mathematical physics/Fundamental condensed matter physics, Civil engineering project/Traffic engineering, Statistical science, Information network, Information security

Membership in Academic Societies

• Physical Society of Japan, American Physical Society, Japan Society for Industrial and Applied Mathematics, Information Processing Society of Japan

Awards

• New Journal of Physics, Best of 2008 （2009/01）

Themes for Ongoing Research

• Quantum Field Theory in curved spacetime
• Experimental study of traffic jam formation
• Integrated Authentication System
• Thermodynamics of systems with a black hole
• Intelligent Tutoring System
• Traffic Flow Models and Their Simulations
• User Network System
• Time Series Analysis of Traffic Flow

Research Themes in the Past

• Quantum Field Theory in curved spacetime
• Thermodynamics of systems with a black hole
• Intelligent Tutoring System

Research Topics and Results

• Characterizing and distinguishing free and jammed traffic flows from the distribution and correlation of experimental speed data 2016年08月
• Quantitative explanation of circuit experiments and real traffic using the optimal velocity model 2016年04月
• Phase transition in traffic jam experiment on a circuit 2013年10月
• Effects of Fast Noises on Long-Range Correlations 2011年01月
• Metastability in the formation of an experimental traffic jam 2009年08月
• Traffic jam without bottleneck - Experimental evidence for the physical mechanism of forming a jam - 2008年03月
• Long-term power-law fluctuation in Internet traffic 2007年04月
• Power-Law Fluctuation in Expressway Traffic Flow: Detrended Fluctuation Analysis 2006年03月
• 利用者移動端末に対応した大規模ネットワークのOpengateによる構築と運用 2005年04月
• 公開端末及び利用者移動端末の認証システムとそのディスクレスマシンによる運用 2001年
• Coupled Map Traffic Flow Simulator Based on Optimal Velocity Functions 1998年
• Jam Phases in a Two-Dimensional Cellular Automaton Model of Traffic Flow 1994年
• Hadamard Regularization and Conformal Transformation 1989年

Books

• Fundamentals of numerical simulations;　2000
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Original Articles

• Origins of Reverse Lane Usage Using Nagel–Schreckenberg Model;　2019/02
  ANNOUNCEMENT INFO.;　Journal of the Physical Society of Japan, 88, 024801
  AUTHOR;　Toshihiro Noda, Yasuhiro Hieida, and Shin-ichi Tadaki
  
• Semi-automated Conversion of Bibliographic Data for Japanese Historical Rare Books into Linked Data;　2018/02
  ANNOUNCEMENT INFO.;　Transactions of Information Processing Society of Japan, 59, 2, 257 -266
  AUTHOR;　Natsuko Yoshiga and Shin-ichi Tadaki
  
• Characterizing and distinguishing free and jammed traffic flows from the distribution and correlation of experimental speed data;　2016/08
  ANNOUNCEMENT INFO.;　New Journal of Physics, 18, 083022
  AUTHOR;　Shin-ichi Tadaki, Macoto Kikuchi, Akihiro Nakayama, Akihiro Shibata, Yuki Sugiyama and Satoshi Yukawa
  
• Quantitative explanation of circuit experiments and real traffic using the optimal velocity model;　2016/04
  ANNOUNCEMENT INFO.;　New Journal of Physics, 18, 043040
  AUTHOR;　Akihiro Nakayama, Macoto Kikuchi, Akihiro Shibata, Yuki Sugiyama, Shin-ichi Tadaki and Satoshi Yukawa
  
• Critical Density of Experimental Traffic Jam;　2015/01
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '13, 505
  AUTHOR;　S. Tadaki, M. Kikuchi, M. Fukui, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama, T. Yosida and S. Yukawa.
  
• Phase transition in traffic jam experiment on a circuit;　2013/10
  ANNOUNCEMENT INFO.;　New Journal of Physics, 15, 103034
  AUTHOR;　Shin-ichi Tadaki, Macoto Kikuchi, Minoru Fukui, Akihiro Nakayama, Katsuhiro Nishinari, Akihiro Shibata, Yuki Sugiyama, Taturu Yosida and Satoshi Yukawa
  
• Fluctuation in e-mail sizes weakens power-law correlations in e-mail flow;　2013/09
  ANNOUNCEMENT INFO.;　The European Physical Journal B, 86, 9, 371
  AUTHOR;　Yoshitsugu Matsubara, Yasuhiro Hieida and Shin-ichi Tadaki
  
• Effects of Fast Noises on Long-Range Correlations;　2011/01
  ANNOUNCEMENT INFO.;　Computer Physics Communications, 182, 1, 237-239
  AUTHOR;　Shin-ichi TADAKI
  
• Development of the Network User Authentication System Supporting Single Sign-On;　2010/03
  ANNOUNCEMENT INFO.;　IPSJ Journal, 51, 3, 1031-1039
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Metastability in the formation of an experimental traffic jam;　2009/08
  ANNOUNCEMENT INFO.;　New Journal of Physics, 11, 083025 1-083025 16
  AUTHOR;　Akihiro Nakayama, Minoru Fukui, Macoto Kikuchi, Katsuya Hasebe, Katsuhiro Nishinari, Yuki Sugiyama, Shin-ichi Tadaki and Satoshi Yukawa
  
• Detailed data of traffic jam experiment;　2009/05
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '07 (Springer-Verlag, Berlin), 389-394
  AUTHOR;　A. Nakayama, M. Fukui, K. Hasebe, M. Kikuchi, K. Nishinari, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Packet flow and its temporal properties in the Internet;　2009/05
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '07 (Springer-Verlag, Berlin), 745-750
  AUTHOR;　S. Tadaki
  
• "Error-based translation" as a new approach in learning Japanese particles for Indonesians;　2009/05
  ANNOUNCEMENT INFO.;　Journal of Information and Systems in Education, 7, 1, 15-25
  AUTHOR;　Saida Ulfa, Y. Okazaki, Y. Hieida, T. Hayashi, K. Watanabe and S. Tadaki
  
• Development and Smooth Installation of a Network Authentication System with Detecting Usave Termination by Watching HTTP Connection;　2009/03
  ANNOUNCEMENT INFO.;　IPSJ Journal, 50, 3, 1032-1042
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Single Sign-On with Opengate;　2009/02
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Reports, 2009, 21, 259264
  AUTHOR;　ETO Hirofumi;OTANI Makoto;WATANABE Kenzi;TADAKI Shin-ichi
  
• Traffic jam without bottleneck - Experimental evidence for the physical mechanism of forming a jam -;　2008/03
  ANNOUNCEMENT INFO.;　New Journal of Physics, 10, 033001 1-7
  AUTHOR;　Y. Sugiyama, M. Fukui, M. Kikuchi, K. Hasebe, A. Nakayama, K. Nishinari, S. Tadaki and S. Yukawa
  
• An Intelligent Tutoring System with Error Based Translation in Learning Japanese Particles for Indonesians;　2007/07
  ANNOUNCEMENT INFO.;　8th International Conference on Information Technology Based Higher Education and Training, Kumamoto, Japan
  AUTHOR;　Saida Ulfa, Yasuhisa Okazaki, Yasuhiro Hieida, Toshihiro Hayashi, Kenzi Watanabe, Shin-ichi Tadaki
  
• Long-term power-law fluctuation in Internet traffic;　2007/04
  ANNOUNCEMENT INFO.;　Journal of Physical Society of Japan, 76, 4, 044001-1- 044001-5
  AUTHOR;　S. Tadaki
  
• Scale-free features in the observed traffic flow;　2007
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '05 (Springer-Verlag, Berlin ), 706-709
  AUTHOR;　S. Tadaki, M. Kikuchi, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama and S. Yukawa
  
• Effects of Bottlenecks on Vehicle Traffic;　2006/11
  ANNOUNCEMENT INFO.;　Journal of the Physical Society of Japan, 75, 11, 114601-1- 114601-5
  AUTHOR;　Syohei Yamamoto, Yasuhiro Hieida and Shin-ichi Tadaki
  
• Power-Law Fluctuation in Expressway Traffic Flow: Detrended Fluctuation Analysis;　2006/03
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 75, 3, 034002-1-034002-5
  AUTHOR;　Tadaki, S / Kikuchi, M / Nakayama, A / Nishinari, K / Shibata, A / Sugiyama, Y / Yukawa, S
  
• Implementation of IPv6 Functions for a Network User Authentication System Opengate;　2005/11
  ANNOUNCEMENT INFO.;　ACM SIGUCCS 2005 Fall Conference (held in Monterey, California, November 6 - 9, 2005), 283-286
  AUTHOR;　Makoto Otani, Katsuhiko Eguchi, Hirofumi Eto, Kenzi Watanabe, Shin-ichi Tadaki and Yoshiaki Watanabe
  
• Implementation and Operation of Large Scale Network for Users' Mobile Computers by Opengate;　2005/04
  ANNOUNCEMENT INFO.;　PSJ Journal, 46, 4, 922-929
  AUTHOR;　S. Tadaki, H. Eto, K. Watanabe and Y. Watanabe
  
• Observation, Theory and Experiment for Freeway Traffic as Physics of Many-Body System;　2005
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '03 (Springer-Verlag, Berlin, 45-58
  AUTHOR;　Y. Sugiyama, A. Nakayama, M. Fukui, K. Hasebe, M. Kikuchi, K. Nishinari, S. Tadaki and S. Yukawa
  
• Fluctuation in Experssway Traffic Flow;　2005
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '03 (Springer-Verlag, Berlin, 59-65
  AUTHOR;　S. Tadaki, M. Kikuchi, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama and S. Yukawa
  
• Application of the "Opengate" System to Public Terminals;　2004/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 8, 9-16
  AUTHOR;　S. Yasuda, H. Hanaishi, H. Eto, S. Tadaki, K. Watanabe and Y. Watanabe
  
• Stable Service of Educational Windows Terminals with Diskless Boot Mechanism;　2004/01
  ANNOUNCEMENT INFO.;　IPSJ JOURNAL, 45, 1, 2-11
  AUTHOR;　H. Eto, Y. Tanaka, Y. Matsubara, K. Wtanabe, Y. Watanabe and S. Tadaki
  
• Network Operation for User Mobile Terminals;　2004/01
  ANNOUNCEMENT INFO.;　IPSJ Symposium Series, 2004, 3, 85-90
  AUTHOR;　S. Tadaki, H. Eto, K. Watanabe and Y. Watanabe
  
• Traffic Flow as Physics of Many-Body System;　2004
  ANNOUNCEMENT INFO.;　Transportation Systems 2003, Proceedings of the 10th IFAC Symposium (Elsevier), 335-340
  AUTHOR;　Y. Sugiyama, M. Kikuchi, A. Nakayama, A. Nishinari, K. Shibata, S. Tadaki and S. Yukawa
  
• Formation of Synchronized Flow at the Upper Stream of Bottleneck in Optimal Velocity Model;　2004
  ANNOUNCEMENT INFO.;　Transportation Systems 2003, Proceedings of the 10th IFAC Symposium (Elsevier), 347-351
  AUTHOR;　M. Kikuchi, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Asymmetric Optimal Velocity Model;　2003/11
  ANNOUNCEMENT INFO.;　Journal of Physical Society of Japan, 72, 11, 2754-2758
  AUTHOR;　A. Okumura and S. Tadaki
  
• Strategies for Migrating to IPv6 in Saga University;　2003/06
  ANNOUNCEMENT INFO.;　IPSJ Symposium Series , 2003, 9, 713-716
  AUTHOR;　Ferry A. S., H. Eto, M. Otani, K. Watanabe and S. Tadaki
  
• Integrated Authentication System as a Base of Campus Information Infrastructure;　2003/01
  ANNOUNCEMENT INFO.;　IPSJ Symposium Series , 2003, 6, 43-48
  AUTHOR;　H. Etoh, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Observational Aspects of Japanese Highway Traffic;　2003
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '01 (Springer-Verlag, 2003), 243-256
  AUTHOR;　S. Yukawa, M. Kikuchi, A. Nakayama, K. Nishinari, Y. Sugiyama and S. Tadaki
  
• Long-Term Traffic Data from Japanese Expressway;　2003
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '01 (Springer-Verlag, 2003), 257-262
  AUTHOR;　M. Kikuchi, A. Nakayama, K. Nishinari, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Congestion Induced by Bottlenecks in Two-lane Optimal Velocity Traffic Flow Model;　2003
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '01 (Springer-Verlag, 2003), 211-220
  AUTHOR;　S. Tadaki, M. Kikuchi, K. Nishinari, Y. Sugiyama and S. Yukawa
  
• Asymmetric Optimal Velocity Model;　2003
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '01 (Springer-Verlag, 2003), 115-118
  AUTHOR;　A. Okumura and S. Tadaki
  
• Analysis of congested flow at the upper stream of a tunnel;　2002/11
  ANNOUNCEMENT INFO.;　Physica A Vol.315 No.1-2 (2002) 156-162, 315, 1-2, 156-162
  AUTHOR;　S. Tadaki, K. Nishinari, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• Traffic Flow Data on Expressways and Two Lane Traffic Flow Model;　2002/06
  ANNOUNCEMENT INFO.;　Bull. Japan Soc. Indust. Appl. Math., 12, 2, 17-25
  AUTHOR;　S. Tadaki
  
• 新しい教育情報基盤の実現に向けて～認証システムをベースとしてキャンパス規模のオープンネットワーク～;　2002
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 6, 13-20
  AUTHOR;　
  
• Observation of Congested Two-lane Traffic Caused by a Tunnel;　2002
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 71, 9, 2326-2334
  AUTHOR;　Tadaki, S.-i / Nishinari, K / Kikuchi, M / Sugiyama, Y / Yukawa, S
  
• An Authentication System for Public and Mobile Terminals and Its Operation with Discless Boot Mechanism;　2001
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net., 5, 15-20
  AUTHOR;　S. Tadaki, H. Eto, K. Watanabe and Y. Yatanabe
  
• n User Authentication Gateway System with Simple User Interface, Low Administration Cost and Wide Applicability;　2001
  ANNOUNCEMENT INFO.;　IPSJ Journal, 42, 12, 2802-2809
  AUTHOR;　Y. Watanabe, K. Watanabe, H. Eto and S. Tadaki
  
• Congested Flow Induced by Noise in Headway Measurements;　2001
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 70, 6, 1842-1848
  AUTHOR;　Uchida, T / Tadaki, S.-i
  
• IMAP に対応した Web ベースメールクライアントWebMailerの開発;　2000
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 4, 35-43
  AUTHOR;　K. Watanabe, A. Takada and S. Tadaki
  
• Noise Induced Congestion in Coupled map Optimal Velocity Model of Traffic Flow;　2000
  ANNOUNCEMENT INFO.;　Y. Suzuki et al ed. Soft Computing in Industrial Applications (Springer, London), 383-391
  AUTHOR;　S. Tadaki, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• A universal e-mail environment - WebMailer : Web based e-mail client software supporting IMAP4 Protocol;　2000
  ANNOUNCEMENT INFO.;　Proc. International ICSC Symposium on Interactive and Collaborative Computing (ICC'2000) (2000)
  AUTHOR;　K. Watanabe, A. Takeda and S. Tadaki
  
• Congestion in multi-lane coupled map traffic flow model;　2000
  ANNOUNCEMENT INFO.;　M. Tokuyama and H. E. Stanley ed. Statistical Physics (AIP, 2000)
  AUTHOR;　M. Kikuchi, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Asymmetric Optimal Velocity Model for Traffic Flow;　2000
  ANNOUNCEMENT INFO.;　Y. Hiwatari, Y. Oyanagi, Y. Okabe and H. Takayama ed. Proceedings of The 5th International Conference on Computational Physics (Progress of Theoretical Physics Supplement No.138) (2000)
  AUTHOR;　M. Kikuchi, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Congestion in Multi-lane Roads with Coupled Map Traffic Flow Model;　2000
  ANNOUNCEMENT INFO.;　Y. Hiwatari, Y. Oyanagi, Y. Okabe and H. Takayama ed. Proceedings of The 5th International Conference on Computational Physics (Progress of Theoretical Physics Supplement No.138) (2000)
  AUTHOR;　S. Tadaki, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• Science of Traffic Flow;　2000
  ANNOUNCEMENT INFO.;　, 55, 3, 166-171
  AUTHOR;　
  
• Noise Induced Congested Traffic Flow in Coupled Map Optimal Velocity Model;　1999/04
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 68, 9, 3110-3114
  AUTHOR;　Tadaki, S.-i / Kikuchi, M / Sugiyama, Y / Yukawa, S
  
• Noise Induced Congested Traffic Flow in Coupled Map Optimal Velocity Model;　1999
  ANNOUNCEMENT INFO.;　Proceedings of International Workshop on Soft Computing in Industry '99
  AUTHOR;　S. Tadaki, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• Coupled map traffic flow simulator based on optimal velocity functions;　1998
  ANNOUNCEMENT INFO.;　M. Schreckenberg and D. E. Wolf ed. Traffic and Granular Flow '97 (Springer, 1998)
  AUTHOR;　S. Tadaki, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• UNIXとWindows の共存する教育用システムにおける利用者管理と端末管理;　1998
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 2, 14
  AUTHOR;　
  
• Traffic Flow Simulator Based on Optimal Velocity Function;　1998
  ANNOUNCEMENT INFO.;　M. Tokuyama and I. Oppenheim ed. Statistical Physics (World Scientific, Singapore, 1998)
  AUTHOR;　M. Kikuchi, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Coupled Map Traffic Flow Simulator Based on Optimal Velocity Functions;　1998
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 67, 7, 2270-2276
  AUTHOR;　Tadaki, S.-i / Kikuchi, M / Sugiyama, Y / Yukawa, S
  
• Distribution of Jam Clusters in a Two-Dimensional Cellular Automaton Traffic Flow Model with Open Boundaries;　1997
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 66, 3, 514-517
  AUTHOR;　Tadaki, S.-i
  
• Two-dimensional cellular automaton model of traffic flow with open boundaries;　1996
  ANNOUNCEMENT INFO.;　PHYSICAL REVIEW -SERIES E-, 54, 3, 2409-2413
  AUTHOR;　Tadaki, S.-i
  
• Self-Organization in a Two-Dimensional Cellular Automaton Model of Traffic Flow;　1995
  ANNOUNCEMENT INFO.;　JOURNAL- PHYSICAL SOCIETY OF JAPAN, 64, 12, 4504-4508
  AUTHOR;　Tadaki, S.-i / Kikuchi, M
  
• Dynamical Phase Transition in One Dimensional Traffic Flow Model with Blockage;　1994
  ANNOUNCEMENT INFO.;　Journal of Physical Soeity of Japan , 63, 10, 3609-3618
  AUTHOR;　S. Yukawa, M. Kikuchi and S. Tadaki
  
• Design of Pseudo-Random Patterns with Low Linear Dependence and Equi-Distribution;　1994
  ANNOUNCEMENT INFO.;　Proceedings of The Third Asian Test Symposium (IEEE Computer Society Press, Los Alamitos, USA, 1994)
  AUTHOR;　S. Matsufuji, S. Tadaki and T. Yamanaka
  
• Orbits in One-dimensional Finite Linear Cellular Automata;　1994
  ANNOUNCEMENT INFO.;　Physical Review E , 49, 2, 1168-1173
  AUTHOR;　S. Tadaki
  
• An Implementation of an ITS for Guiding Fraction Calculation;　1994
  ANNOUNCEMENT INFO.;　, J77-A, 3, 518-529
  AUTHOR;　
  
• Jam Phases in a Two-Dimensional Cellular Automaton Model of Traffic Flow;　1994
  ANNOUNCEMENT INFO.;　Physical Review E, 50, 6, 4564-4570
  AUTHOR;　S. Tadaki and M. Kikuchi
  
• Analysis of student's errors in differential calculations and buggy model;　1993/09
  ANNOUNCEMENT INFO.;　, 10, 3, 91-101
  AUTHOR;　
  
• Periodicity in One-dimensional Finite Linear Cellular Automata;　1993
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 89, 2, 325-331
  AUTHOR;　S. Tadaki and S. Matsufuji
  
• Courseware Knowledge and Recognition of Strategies in an ITS for Guiding Fraction Calculation;　1992
  ANNOUNCEMENT INFO.;　Proc. Pacific Rim Intern. Conf. on Artificial Intelligence `92, 1, 464-470
  AUTHOR;　H. Kondo, Y. Okazaki, K. Watanabe and S. Tadaki
  
• Quantum Field Theory in Two-dimensional Schwarzschild-de Sitter Spacetime. II;　1990
  ANNOUNCEMENT INFO.;　Pregress of Theoretical Physics, 83, 6, 1126-1139
  AUTHOR;　S. Tadaki and S. Takagi
  
• Quantum Field Theory in Two-dimensional Schwarzschild-de Sitter Spacetime. I;　1990
  ANNOUNCEMENT INFO.;　Pregress of Theoretical Physics, 83, 5, 941-952
  AUTHOR;　S. Tadaki and S. Takagi
  
• Cosmological Domain Walls Coupled to Gravity;　1990
  ANNOUNCEMENT INFO.;　Physical Review D, 41, 10, 3047-3051
  AUTHOR;　S. Tadaki and H. Ishihara
  
• Classification of Conformal Cosmological Models;　1990
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 83, 3, 491-498
  AUTHOR;　S. Tadaki, M. Den, K. Ohnishi and Y. Yamada
  
• Spectrum of Casimir Energy;　1989
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 82, 4, 737-743
  AUTHOR;　S. Tadaki and S. Takagi
  
• Hadamard Regularization and Conformal Transformation;　1989
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 81, 4, 891-903
  AUTHOR;　S. Tadaki
  
• Stress Tensor in de Sitter Space;　1988
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 80, 4, 654-662
  AUTHOR;　S. Tadaki
  
• Renormalized Stress Tensor and Field Fluctuation in a Friedmann Universe;　1988
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 79, 4, 790-799
  AUTHOR;　S. Tadaki
  
• Hadamard Regularization in Curved Spacetime;　1987
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 77, 3, 671-680
  AUTHOR;　S. Tadaki
  
• Casimir Effect at Finite Temperature;　1986
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 75, 2, 262-271
  AUTHOR;　S. Tadaki and S. Takagi
  
• Phenomenological Theory of the Equilibrium State of the System with a Black Hole and Radiation;　1985
  ANNOUNCEMENT INFO.;　Progress of Theoretical Physics, 73, 1, 288-291
  AUTHOR;　S. Tadaki and S. Takagi
  

Material, Commentary, Editorials, Research Report, A Comprehensive Journal Articles

• Dunbar's number in a microblogging service and its origin;　2016/12
  ANNOUNCEMENT INFO.;　Proceedings of the 22th Symposium on Traffic Flow and Self-driven Particles, 25
  AUTHOR;　N. Araki, Y. Hieida and S. Tadaki
  
• Origins of Reverse Lane Usage Studied with Nagel-Schreckenberg MOdel;　2016/12
  ANNOUNCEMENT INFO.;　Proceedings of the 22th Symposium on Traffic Flow and Self-driven Particles, 53
  AUTHOR;　T. Noda, Y. Hieida and S. Tadaki
  
• Linked Data Applied a Bibliographic Ontology as a Metadata Design of Historical Rare Books;　2015/03
  ANNOUNCEMENT INFO.;　, SIG-SWO-035-08
  AUTHOR;　N. Yoshiga, K. Wtanabe and S. Tadaki
  
• 書誌学的情報およびデータ入力を考慮した貴重書書誌オントロジーの構築;　2014/05
  ANNOUNCEMENT INFO.;　, JSAI2014, 1G5-OS-19b-1
  AUTHOR;　
  
• Constructing Ontology and a Visual Search System for Bibliography of Historical Documents and Art Objects by Extracting Metadata from Miscellaneous Fields;　2013/09
  ANNOUNCEMENT INFO.;　IPSJ SIG Notes, 2013, 5, 18
  AUTHOR;　Natsuko Yoshiga;Kenzi Watanabe;Shin-ichi Tadaki
  
• Developing a Bibliographical Ontology and a Visual Search System for Histrocal Documents with Semantic Web Technologies;　2013/06
  ANNOUNCEMENT INFO.;　The 27th Annual Conference of the Japanese Society for Artificial Intelligence 2013, 1N3-OS-10a-4in
  AUTHOR;　N. Yoshiga, K. Watanabe and S. Tadaki
  
• Development of Opengate Capable of Detecting Usage Termination by WebSocket;　2013/05
  ANNOUNCEMENT INFO.;　IEICE technical report. Information and communication management, 113, 23, 121125
  AUTHOR;　OTANI MAKOTO;ETO HIROFUMI;WATANABE KENZI;TADAKI SHIN-ICHI;WATANABE YOSHIAKI
  
• A Visual Search System with Semantic Web Technologies on Digital Archives for Historical Documents;　2012/12
  ANNOUNCEMENT INFO.;　International Conference on Convergence Content, 23-24
  AUTHOR;　Natsuko Yoshiga, Kenzi Watanabe, Shin-ichi Tadaki
  
• Improving the efficiency in an authentication system and its compatibility for the Gakunin federation;　2012/05
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2012, IOT17, 10
  AUTHOR;　S. Tadaki, H. Eto, M. Otani and K. Watanabe
  
• OpengateM: MAC-address Base Authentication System Complementary To Opengate;　2012/03
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2011, IOT-16
  AUTHOR;　Yoshiaki Watanabe, Makoto Otani, Hirofumi Eto, Kenzi Watanabe and Shin-ichi Tadaki
  
• Opengate on Cloud;　2012/03
  ANNOUNCEMENT INFO.;　Proceedings of The 26th IEEE International Conference on Advanced Information Networking and Applicatioins (AINA-2012), W-ITIS Workshop, Fukuoka, Japan, March 26th - 29th (2012.3). 1027
  AUTHOR;　Kenzi Watanabe, Makoto Otani, Shin-ichi Tadaki and Yoshiaki Watanabe
  
• Analysis of power-law correlation of e-mail sending demands;　2011/12
  ANNOUNCEMENT INFO.;　Proceedings of the 17th Symposium on Simulation of Traffic Flow, 105-108
  AUTHOR;　Y. Matsubara, Y. Hieida and S. Tadaki
  
• Phase transition in traffic flow experiments in circuit;　2011/12
  ANNOUNCEMENT INFO.;　Proceedings of the 17th Symposium on Simulation of Traffic Flow, 109-112
  AUTHOR;　S. Tadaki, M. Kikuchi, M. Fukui, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama, T. Yoshida and S. Yukawa
  
• Simulations of pedestrian crossing-flow based on a cellular automaton model with floor field;　2011/12
  ANNOUNCEMENT INFO.;　Proceedings of the 17th Symposium on Simulation of Traffic Flow, 113-116
  AUTHOR;　D. Takahashi, Y. Hieida and S. Tadaki
  
• Anti-power-failure plans and power management at university ICT centers;　2011/10
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2011-IOT-15, 8-1-8-5
  AUTHOR;　S. Tadaki, Y. Tanaka, T. Ono and K. Watanabe
  
• Cost reduction and Service Improvement in E-mail Services by a Private Cloud Service;　2011/07
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2011-IOT-14, 8-1-8-6
  AUTHOR;　Y. Matsubara, M. Otani, H. Eto, K. Watanabe and S. Tadaki
  
• “Documents distribution board” with Shibboleth for all faculty members;　2011/05
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2011-IOT-13, 16-1-16-6
  AUTHOR;　Natsuko Yoshiga, Hirofumi Eto, Makoto Otani, Kenzi Watanabe and Shin-Ichi Tadaki
  
• 佐賀大学の新しい学術情報基盤 -仮想化、シンクライアント、シングルサインオン-;　2010/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Virtual user desktops through server-hosted thin-clients (The new educational terminal system in Saga University);　2010/10
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2010-IOT-11, 3-1
  AUTHOR;　S. Tadaki, Y. Tanaka, Y. Matsubara, Y. Hieida, H. Eto and K. Watanabe
  
• Evaluation of Anti-spam Practical Use Using by Greylisting;　2010/10
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2010-IOT-11, 7, 1-6
  AUTHOR;　Y. Matsubara, M. Otani, Y. Hieida and S. Tadaki
  
• Campus Information Network and Virtualization Technology;　2010/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 14, 158-163
  AUTHOR;　M. Otani, K. Watanabe and S. Tadaki
  
• Operation of SSO-Opengate using virtual machine;　2010/05
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2010-IOT-9, 5-1-5-6
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Effects of diagonal motions and partition lines on simulations of pedestrian counter flow;　2009/12
  ANNOUNCEMENT INFO.;　Proceedings of the 15th Symposium on Simulation of Traffic Flow, 69-72
  AUTHOR;　D. Takahashi, Y. Hieida and S. Tadaki
  
• Forced Display of Portal Site with Single Sign-On;　2009/05
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report, 2009-IOT-5, 6-1-6-6
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Effects of short-range noises on the power spectrum and the Detrended Fluctuation Analysis;　2008/11
  ANNOUNCEMENT INFO.;　Proceedings of the 14th Symposium on Simulation of Traffic Flow, 69-72
  AUTHOR;　S. Tadaki
  
• Long-term correlation in Internet demand: case of e-mail sending;　2008/11
  ANNOUNCEMENT INFO.;　Proceedings of the 14th Symposium on Simulation of Traffic Flow, 73-75
  AUTHOR;　Y. Matsubara, Y. Hieida and S. Tadaki
  
• For flexible management of new e-mail addresses;　2008/09
  ANNOUNCEMENT INFO.;　Journal of Academic Computing and Networking, 12, 98-102
  AUTHOR;　H. Eto and S. Tadaki
  
• Installation to the authentication network of UPKI initiative server certificate;　2008/09
  ANNOUNCEMENT INFO.;　Journal of Academic Computing and Networking, 12, 103-107
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Collecting assessment data form all teaching staffs: Results and Problems;　2008/09
  ANNOUNCEMENT INFO.;　Journal of Academic Computing and Networking, 12, 112-116
  AUTHOR;　S. Tadaki, T. Endo, K. Funakubo, Y. Kishikawa, S. Murayama and H. Yamada
  
• Usage of the name resolution in Opengate;　2008/09
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report 2008-IOT-3, 2008, 87, 55-60
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Unified data services in universities: From viewpoints of university assessments;　2008/09
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report 2008-IOT-3, 2008, 87, 61-66
  AUTHOR;　S. Tadaki, T. Endo, K. Funakubo, Y. Kishikawa, S. Murayama and H. Yamada
  
• 情報センターと図書館の融合の行方 - 情報統合と活用 -;　2008/03
  ANNOUNCEMENT INFO.;　, 8, 54 - 58
  AUTHOR;　
  
• Detailed Data of Traffic Jam Experiment;　2007/12
  ANNOUNCEMENT INFO.;　Proceedings of the 13th Symposium on Simulation of Traffic Flow, 7-10
  AUTHOR;　A. Nakayama, M. Fukui, K. Hasebe, M. Kikuchi, K. Nishinari, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Structure of Networks and Fluctuations in Flow;　2007/12
  ANNOUNCEMENT INFO.;　Proceedings of the 13th Symposium on Simulation of Traffic Flow, 41-44
  AUTHOR;　S. Tadaki
  
• Development and operation of a network authentication system with detecting usage termination by watching HTTP connection;　2007/09
  ANNOUNCEMENT INFO.;　Journal of Academic Computing and Networking, 11, 87-91
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Operatability of educational terminals by Diskless Solaris;　2007/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 11, 115-119
  AUTHOR;　H. Eto and S. tadaki
  
• Installation and Operation of New Opengate with detecting Usage Termination by Watching HTTP Connection;　2007/09
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report 2007-DSM-47, 31-36
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• 情報系センターと附属図書館 - 連携と情報基盤の共通化 -;　2007/03
  ANNOUNCEMENT INFO.;　, 7, 38-41
  AUTHOR;　
  
• Development of the new Opengate capable of detecting usage termination by HTTP Keep-Alive;　2007/03
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report 2007-DSM-44, 65-70
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• ボトルネックによる渋滞形成;　2006/12
  ANNOUNCEMENT INFO.;　, 53-56
  AUTHOR;　
  
• Improvement of the network user authentication system Opengate for IPv4/IPv6 network;　2006/09
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Reports 2006-DSM-43, 19-24
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• Outline of New System of Computer and Network Center;　2006/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 10, 75-80
  AUTHOR;　H. Eto and S. tadaki
  
• System for Preventing of Multilogin in Educational terminals;　2006/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 10, 91-96
  AUTHOR;　Y. Matsubara, Y. Tanaka, H. Eto and S. Tadaki
  
• Improvement and operation of the network user authentication system Opengate;　2006/09
  ANNOUNCEMENT INFO.;　Journal of Academic Computing and Networking, 10, 97-102
  AUTHOR;　M. Otani, H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• An automatic generator of static whitelists in the milter-greylist system;　2006/07
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Report 2006-DSM-42, 43-45
  AUTHOR;　Y. Matsubara and S. Tadaki
  
• ボトルネック上流の高密度一様流：流量保存による現象論;　2005/12
  ANNOUNCEMENT INFO.;　, 33-36
  AUTHOR;　
  
• Development of network usage authentication system using Java Servlet;　2005/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 9, 85-89
  AUTHOR;　T. Nomura, S. Tobo, Y. Watanabe, K. Watanabe, H. Eto and S. Tadaki
  
• Development of an online submission system by PHP;　2005/09
  ANNOUNCEMENT INFO.;　Journal for Academic Computing and Networking, 9, 113-117
  AUTHOR;　H. Eto, N. Yoshiga and S. Tadaki
  
• Effective Writing Processes of System Specifications by XML;　2005/08
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Report 2005-DSM-38, 17-22
  AUTHOR;　S. Tadaki
  
• ボトルネック上流における渋滞形成;　2004/12
  ANNOUNCEMENT INFO.;　, 57-60
  AUTHOR;　
  
• University Database: Problems and Solutions for Collecting Basic Information of Teaching Staffs;　2004/07
  ANNOUNCEMENT INFO.;　IPSJ SIG Technical Reports, 2004-DSM-33, 49 - 54
  AUTHOR;　S. Tadaki, Y.Hieida, M. Otsuki, K. Watanabe and Y. Watanabe
  
• Authentication and logging at public terminals with the "Opengate" system;　2004/05
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Report 2004-DSM-33, 65-70
  AUTHOR;　S. Yasuda, H. Hanaishi, K. Watanabe, Y. Watanabe, H. Eto and S. Tadaki
  
• 大規模分散ネットワーク環境における教育用計算機システム：Diskless Dual Boot編;　2004/03
  ANNOUNCEMENT INFO.;　, 45, 3, 250-254
  AUTHOR;　
  
• LDAPによる情報管理機能を有するウェブメールソフトウェアの開発;　2004
  ANNOUNCEMENT INFO.;　, 8, 83-88
  AUTHOR;　
  
• 大学データベースにおける教員基礎情報収集の問題点と解決法;　2004
  ANNOUNCEMENT INFO.;　, 2004-DSM-34, 49-54
  AUTHOR;　
  
• Unification of Information Systems at University-Integration;　2003/11
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2003-DSM-31, 1-5
  AUTHOR;　H. Eto, Y. Tanaka, Y. Matubara and S. Tadaki
  
• Stable service of Educational Windows Terminals with Diskless Boot Mechanism;　2003/04
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2003-DSM-29, 19-24
  AUTHOR;　H. Eto, Y. Tanaka, Y. Matubara, S. Tadaki, K. Watanabe and Y. Watanabe
  
• 車線間相関 - 大型車の役割 -;　2002/11
  ANNOUNCEMENT INFO.;　, 9
  AUTHOR;　
  
• 東名高速道路における流量ゆらぎ;　2002/11
  ANNOUNCEMENT INFO.;　, 13
  AUTHOR;　
  
• 二車線路CMOV模型;　2002/11
  ANNOUNCEMENT INFO.;　, 29
  AUTHOR;　
  
• Integrated Authentication for Campus-wide Information Systems;　2002/10
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2002-DSM-27, 31-36
  AUTHOR;　H. Eto, K. Watanabe, S. Tadaki and Y. Watanabe
  
• UNIX環境とWindows環境を提供可能な教育用ディスクレス端末システム;　2002
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2002-DSM-25, 19-23
  AUTHOR;　
  
• Can we explain traffic congestion?;　2001/02
  ANNOUNCEMENT INFO.;　RIMS Kokyuroku, 1191, 84-89
  AUTHOR;　S. Tadaki
  
• WEBベース講義支援システムの開発;　2001
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2001-DSM-21, 25-30
  AUTHOR;　
  
• Webブラウザを用いたDNS管理システムの開発;　2001
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2001-DSM-21, 31-36
  AUTHOR;　
  
• オンライン・シラバスの出力システムの開発;　2001
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 5, 57-60
  AUTHOR;　
  
• 佐賀大学電子図書館システム「とんぼの眼」;　2001
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 5, 81-86
  AUTHOR;　
  
• Webベースネットワーク運用システムの開発;　2001
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 2001-DSM-24, 25-30
  AUTHOR;　
  
• 1車線高速道路におけるトンネル上流の渋滞形成;　2000/11
  ANNOUNCEMENT INFO.;　, 14
  AUTHOR;　
  
• トンネル上流の渋滞形成 - 2車線モデルと実測の比較 -;　2000/11
  ANNOUNCEMENT INFO.;　, 21
  AUTHOR;　
  
• 東名高速道路観測データからの知見(その2);　2000/11
  ANNOUNCEMENT INFO.;　, 21
  AUTHOR;　
  
• 利用者認証と利用記録機能を実現するゲートウェイシステムOpengateの開発;　2000
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 情報処理教育における統一した電子メール利用環境の実現;　2000
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• オンライン・シラバス;　2000
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 4, 105-109
  AUTHOR;　
  
• センターの利用者管理を支援するWebベース統合環境;　2000
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 4, 111-118
  AUTHOR;　
  
• 非対称Optimal velocity 模型;　1999/11
  ANNOUNCEMENT INFO.;　, 13
  AUTHOR;　
  
• 流入のある高速道での渋滞形成;　1999/11
  ANNOUNCEMENT INFO.;　, 17
  AUTHOR;　
  
• 車間距離観測ノイズによる輻輳流;　1999/11
  ANNOUNCEMENT INFO.;　, 51
  AUTHOR;　
  
• 東名高速道路観測データからの知見;　1999/11
  ANNOUNCEMENT INFO.;　, 63
  AUTHOR;　
  
• 情報教育用システムにおける管理作業とその振り分け;　1999
  ANNOUNCEMENT INFO.;　J. Acad. Comp. Net. , 3, 97
  AUTHOR;　
  
• CMOVモデルと輻輳交通流形成;　1998/11
  ANNOUNCEMENT INFO.;　, 49
  AUTHOR;　
  
• TCP/IPを利用したWindowsNT リモートシャットダウン;　1998
  ANNOUNCEMENT INFO.;　IPSJ SIG Techanical Reports, 99-DSM-12, 61-66
  AUTHOR;　
  
• 最適速度関数に基づく結合写像交通流シミュレータ;　1997/11
  ANNOUNCEMENT INFO.;　, 19
  AUTHOR;　
  
• パーソナルコンピュータを中心とした管理可能な情報処理教育環境の構築;　1997
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 開放交通網モデルのシミュレーション;　1996/11
  ANNOUNCEMENT INFO.;　, 18
  AUTHOR;　
  
• Self-organization in a two-dimensional cellular automaton model of traffic flow;　1996
  ANNOUNCEMENT INFO.;　Bussei Kenkyu, 66, 3, 610-611
  AUTHOR;　S. Tadaki
  
• 二次元開放端CA交通流モデルにおける自己組織化;　1995/12
  ANNOUNCEMENT INFO.;　, 28
  AUTHOR;　
  
• 2次元交通量モデルにおける渋滞相の性質;　1994/12
  ANNOUNCEMENT INFO.;　, 27
  AUTHOR;　
  
• 2 次元セルオートマトン交通量モデルにおける渋滞相の安定性;　1994
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Schwarzschild 時空上の_μ^ν>;　1987
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

General Lectures

• Semi-automated Generation of Linked Data from Unstructured Bibliographic Data for Japanese Historical Rare Books;　2017/09
  ANNOUNCEMENT INFO.;　14th International Conference on Digital Preservation (Kyoto, Sep. 2017)
  AUTHOR;　N. Yoshiga and S. Tadaki
  
• Extracting and Construction Contextual Information from Unstructured Texts in Bibliographical Data of Japanese Historical Rare Books;　2016/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Natsuko Yoshiga and Shin-ichi Tadaki
  
• Origins of Reverse Lane Usage Studied with Nagel-Schreckenberg Model;　2016/12
  ANNOUNCEMENT INFO.;　The 22th Symposium on Traffic Flow and Self-driven Particles (Kyoto University, 2016)
  AUTHOR;　Toshihiro Noda, Yasuhiro Hieida, and Shin-ichi Tadaki
  
• Linked Data Applied a Bibliographic Ontology as a Metadata Design of Historical Rare Books;　2015/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　N. Yoshiga, K. Wtanabe and S. Tadaki
  
• Critical density of experimental traffic jam;　2013/09
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '13 (Sep. 25-27, 2013, Forschungszentrum Jeulich, Germany)
  AUTHOR;　S. Tadaki, M, Kikuchi, M. Fukui, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama, T. Yosida and S. Yukawa
  
• A MAC address based authentication system applicable to campus-scale network;　2013/09
  ANNOUNCEMENT INFO.;　The 15th Asia-Pacific Network Operations and Management Symposium (APNOMS2013), Hiroshima, Japan (2013.09.27)
  AUTHOR;　Yoshiaki Watanabe, Makoto Otani, Hirofumi Eto, Kenzi Watanabe and Shin-ichi Tadaki
  
• Developing a Bibliographical Ontology and a Visual Search System for Histrocal Documents with Semantic Web Technologies;　2013/06
  ANNOUNCEMENT INFO.;　The 27th Annual Conference of the Japanese Society for Artificial Intelligence 2013
  AUTHOR;　N. Yoshiga, K. Watanabe and S. Tadaki
  
• A Visual Search System with Semantic Web Technologies on Digital Archives for Historical documents;　2012/12
  ANNOUNCEMENT INFO.;　International Conference on Convergence Content
  AUTHOR;　Natsuko Yoshiga, Kenzi Watanabe, Shin-ichi Tadaki
  
• Improving the efficiency in an authentication system and its compatibility for the Gakunin federation;　2012/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　S. Tadaki, H. Eto, M. Otani and K. Watanabe
  
• Phase transition in traffic flow experiments in circuit;　2011/12
  ANNOUNCEMENT INFO.;　The 17th Symposium on Simulation of Traffic Flow (Nagoya University、2011/12/8-9)
  AUTHOR;　S. Tadaki, M. Kikuchi, M. Fukui, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama, T. Yoshida and S. Yukawa
  
• Anti-power-failure plans and power management at university ICT centers;　2011/10
  ANNOUNCEMENT INFO.;　IPSJ SIG-IOT (Ehime University, 2011/10/7)
  AUTHOR;　S. Tadaki, Y. Tanaka, T. Ono and K. Watanabe
  
• Cost reduction and Service Improvement in E-mail Services by a Private Cloud Service;　2011/07
  ANNOUNCEMENT INFO.;　IPSJ SIG-IOT (Okayama University, 2011/7/15)
  AUTHOR;　Y. Matsubara, M. Otani, H. Eto, K. Watanabe and S. Tadaki
  
• シボレスに対応し全教職員が利用可能な「事務連絡ボード」;　2011/05
  ANNOUNCEMENT INFO.;　IPSJ SIG-IOT (Kyushu University, 2011/5/12-13)
  AUTHOR;　Natsuko Yoshiga, Hirofumi Eto, Makoto Otani, Kenzi Watanabe and Shin-Ichi Tadaki
  
• Vehicle Traffic Flow, Packet Flow and Human Behavior;　2011/03
  ANNOUNCEMENT INFO.;　International Workshop on Information System for Social Innovation (The Institute of Statistical Mathematics, Tachikawa, Tokyo, 2011/2/28-3/4)
  AUTHOR;　Shin-ichi TADAKI
  
• 佐賀大学の新しい学術情報基盤 -仮想化、シンクライアント、シングルサインオン-;　2010/12
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Virtual user desktops through server-hosted thin-clients (The new educational terminal system in Saga University);　2010/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　S. Tadaki, Y. Tanaka, Y. Matsubara, Y. Hieida, H. Eto and K. Watanabe
  
• Rewiring through epidemic spreading;　2010/06
  ANNOUNCEMENT INFO.;　Conference on Computational Physics 2010 (Trondheim, Norway)
  AUTHOR;　S. Tadaki
  
• Effects of Fast Noises on Long-Range Correlations;　2009/12
  ANNOUNCEMENT INFO.;　Conference on Computational Physics 2009 (Kaohsiung, Taiwan)
  AUTHOR;　S. Tadaki
  
• Effects of short-range noises on the power spectrum and the Detrended Fluctuation Analysis;　2008/12
  ANNOUNCEMENT INFO.;　The 14th Symposium on Simulation of Traffic Flow (2008/11/28, Nagoya University)
  AUTHOR;　S. Tadaki
  
• Long-term correlation in Internet demand: case of e-mail sending;　2008/12
  ANNOUNCEMENT INFO.;　the 14th Symposium on Simulation of Traffic Flow (2008/11/28, Nagoya University)
  AUTHOR;　Y. Matsubara, Y. Hieida and S. Tadaki
  
• Collecting assessment data form all teaching staffs: Results and Problems;　2008/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　S. Tadaki, T. Endo, K. Funakubo, Y. Kishikawa, S. Murayama and H. Yamada
  
• Unified data services in universities: From viewpoints of university assessments;　2008/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　S. Tadaki, T. Endo, K. Funakubo, Y. Kishikawa, S. Murayama and H. Yamada
  
• Packet flow and its temporal properties on networks;　2007/06
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow 2007 (Paris)
  AUTHOR;　S. Tadaki
  
• ボトルネックによる渋滞形成;　2006/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• インターネットパケット流の長時間ゆらぎ;　2006/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Scale-free features in the observed traffic flow;　2005
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow 2005(Berlin, Germany)
  AUTHOR;　S. Tadaki, M. Kikuchi, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama and S. Yukawa
  
• Slow stable traffic flow at the upper stream of bottleneck;　2004/09
  ANNOUNCEMENT INFO.;　Conference on Computational Physics 2004 (Genoa, Italy)
  AUTHOR;　S. Tadaki, M. Kikuchi, A. Nakayama, Y. Sugiyama and S. Yukawa
  
• 交通流実測データ解析とシミュレーション;　2004/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 交通流時系列における特徴的時間スケール;　2004/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Fluctuation in Experssway Traffic Flow;　2003/10
  ANNOUNCEMENT INFO.;　Traffic and Granular Flow '03 (TU Delft, Netherland)
  AUTHOR;　M. Kikuchi, A. Nakayama, K. Nishinari, A. Shibata, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Traffic Flow as Physics of Many-Body System;　2003/08
  ANNOUNCEMENT INFO.;　CTS2003(10th IFAC Symposium on Control in Transportation Systems)Seikei University (Tokyo)
  AUTHOR;　Y. Sugiyama, M. Kikuchi, A. Nakayama, A. Nishinari, K. Shibata, S. Tadaki and S. Yukawa
  
• Formation of Synchronized Flow at the Upper Stream of Bottleneck in Optimal Velocity MOdel;　2003/08
  ANNOUNCEMENT INFO.;　CTS2003(10th IFAC Symposium on Control in Transportation Systems)Seikei University (Tokyo)
  AUTHOR;　M. Kikuchi, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• Computational Science -New tools for opening new research area-;　2003/05
  ANNOUNCEMENT INFO.;　SIM2003(The 3rd Indonesian Scientific Meeting 2003) Saga University 2003/5
  AUTHOR;　S. Tadaki
  
• 高速道路交通流のゆらぎ;　2003/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 高速道路交通流の渋滞パターン;　2003/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 高速道交通流における大型車の役割;　2003/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Properties of congestion at an upper stream of a tunnel;　2002/08
  ANNOUNCEMENT INFO.;　Conference on Computational Physics (San Diego, USA)
  AUTHOR;　S. Tadaki
  
• Analysis of congested flow at the upper stream of a tunnel;　2001/11
  ANNOUNCEMENT INFO.;　International Symposium on Slow Dynamical Processes in Nature (Seoul, Korea)
  AUTHOR;　S. Tadaki, K. Nishinari, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• 非対称最適速度交通流模型における渋滞形成;　2001/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Coupled map traffic flow model for one-lane expressways with blockades;　2000/12
  ANNOUNCEMENT INFO.;　Conference on Computational Physics 2000 (Gold Coast, Australia)
  AUTHOR;　S. Tadaki, M. Kikuchi, Y. Sugiyama and S. Yukawa
  
• セルオートマトン交通網模型 - 経路制御と渋滞形成 -;　1999/07
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Congestion in Generalized Force Model of Traffic Flow;　1999/03
  ANNOUNCEMENT INFO.;　54th JPS Meeting (Hiroshima University)
  AUTHOR;　S. Tadaki and E. Schahverdiev
  
• 雑音による輻輳交通流形成II;　1998/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Noise-induced congested flow in coupled map traffic flow model;　1998/06
  ANNOUNCEMENT INFO.;　XXth IUPAP International Conference on Statistical Physics (Paris, France)
  AUTHOR;　S. Tadaki, M. kikuchi, Y. Sugiyama and S. Yukawa
  
• 結合写像型最適速度交通流モデル;　1998/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 雑音による輻輳交通流形成;　1998/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Traffic flow simulator based on optimal velocity function;　1997/11
  ANNOUNCEMENT INFO.;　2nd Tohwa University International Meeting (Fukuoka, Japan)
  AUTHOR;　M. Kikuchi, Y. Sugiyama, S. Tadaki and S. Yukawa
  
• 最適速度関数を用いた結合写像型交通流シミュレータ;　1997/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2次元開放端セルオートマトン交通流モデルにおける渋滞クラスタの形成;　1996/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2次元開放端セルオートマトン交通流モデルにおける自己組織化;　1996/04
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 交通流の2次元セルオートマトンによるモデル化 - 相転移と自己組織化 -;　1996/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Self-organization in a two-dimensional cellular automaton model of traffic flow;　1995/11
  ANNOUNCEMENT INFO.;　1st Tohwa University Statistical Physics Meeting (Fukuoka, Japan)
  AUTHOR;　S. Tadaki
  
• 1次元有限線形セルオートマトンの周期が持つ階層構造;　1995/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Jam phases in a two-dimensional cellular automaton model of traffic flow;　1995/08
  ANNOUNCEMENT INFO.;　19th IUPAP International Conference on Statistical Physics (Xiamen, China)
  AUTHOR;　S. Tadaki and M. Kikuchi
  
• 2次元セルオートマトン交通流モデルにおける渋滞相のフラクタル構造;　1995/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2次元交通量モデルにおける渋滞相の空間構造;　1994/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 非等方二次元交通量モデルにおける渋滞;　1994/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 周期境界条件を持つ1次元線形セルオートマトンの周期性;　1994/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Periodic orbits of finite linear cellular automata;　1994/07
  ANNOUNCEMENT INFO.;　BrisPhys '94 (Brisbane, Australia)
  AUTHOR;　S. Tadaki
  
• 2次元セルオートマトン交通量モデルにおける渋滞相の性質;　1994/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 2次元交通量モデルにおける渋滞相の性質;　1993/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Freeway Jam II : 二次元モデル;　1993/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 1次元有限線形セルオートマトンにおける周期性;　1993/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 1次元有限線形セルオートマトンにおける周期性;　1992/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 曲がった時空上の_μ^ν>;;　1990
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Dynamics of Cosmological Domain Walls;　1990
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 分数計算を指導する知的CAI--分数の基礎概念と加減算の多重階層世界--;　1990
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 分数計算を指導する知的CAI --システム構成--;　1990
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 一様等方宇宙に埋め込まれたブラックホールからのホーキング輻射;　1989
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Hawking Radiation from Cosmological Black Holes;　1989
  ANNOUNCEMENT INFO.;　12th International Conference on General Relativity and Gravitation (July 2-8, 1989) (University of Colorado)
  AUTHOR;　S. Tadaki
  
• 2次元Schwarzschild-de Sitter時空上の場の量子論;　1989
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Classification of Conformal Cosmological Models;　1989
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Domain Walls Coupled to Gravity;　1989
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Schwarzschild 時空上の_μ^ν>;;　1987
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Schwarzschild 時空上の_μ^ν>; II;　1987
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Friedmann 時空上のスカラー場;　1987
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Hadamard正則化法とconformal変換;　1987
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Schwarzschild 時空上の_μ^ν>;;　1986
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ブラックホールと黒体輻射からなる系の平衡状態;　1984
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Other Lectures

• Toward Business Continuity Plans for ICT Sections in Universities;　2011/08
  ANNOUNCEMENT INFO.;　Lecture at TOPIC meeting (Tohoku University, 2011/8/3)
  AUTHOR;　S. Tadaki
  
• 佐賀大学におけるシングルサインオンの取り組みと今後の展望;　2011/02
  ANNOUNCEMENT INFO.;　
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• 学術情報基盤の現状と課題 - 所有から利用へ -;　2009/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 大学情報システムの強化・効率化 -統合・アウトソーシング。協同化-;　2009/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ITは大学運営の効率化に寄与しているか?;　2008/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 情報センターと図書館の融合の行方;　2007/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 利用者用ネットワークと統合認証;　2006/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• シンクライアントで実現！コンピュータ管理コスト削減;　2005/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Invited Lecture, Special Lecture

• Information Infrasturcture based on Authentication System: Case of Saga University;　2011/03
  ANNOUNCEMENT INFO.;　74th Annual Meeting of Information Processing Society of Japan
  AUTHOR;　Shin-ichi Tadaki