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甲南大学知能情報学部

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学術論文 - Published Papers

Masahiro Tanaka, Masahiro Wada, Tomohiro Umetani and Minoru Ito, "Detection of Mobile Objects by Mixture PDF Model for Mobile Robots," システム制御情報学会論文誌, vol. 25, no. 11, pp. 308-315, 2012.

Tomohiro Umetani, Naomichi Kuga, Masahiro Tanaka, Masahiro Wada and Minoru Ito, "Target-Tracking based on Fusion of Unsynchronized Sensor Data from Vision System and Thermal Imaging Sensor," システム制御情報学会論文誌, vol. 25, no. 11, pp. 323-327, 2012.

Masahiro Wada, Masahiro Tanaka and Yoshifumi Nishio, "Pattern Dynamics of Stochastical Synchronization Phenomena on Coupled Multi-State Chaotic Oscillators," International Journal of ICIC, vol. 6, no. 1, pp. 43-52, Jan. 2010.

Takayuki Sunagawa and Masahiro Wada, "Watermarking Methods for Digital Images Using Chaotic Cryptography," Journal of Signal Processing, vol. 13, no. 4, pp. 355-358, July 2009.
Ryo Makita and Masahiro Wada, "A Digital Watermarking Method Using Block Partition and Simple Chaotic Maps," Journal of Signal Processing, vol. 10, no. 4, pp. 291-294, Jul. 2006.
Masahiro Wada, Junji Kawata, Yoshifumi Nishio and Akio Ushida, "BER Estimation of a Chaos Communication System Including Modulation-Demodulation Circuits," IEICE Trans. Letter, vol. E83-A, no. 3, pp. 563-566, Mar. 2000.
Masayuki Yamauchi, Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Wave Propagation Phenomena of Phase States in Oscillators Coupled by Inductors as a Ladder," IEICE Trans., vol. E82-A, no. 11, pp. 2592-2598, Nov. 1999.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Analysis of Bifurcation Phenomena on Two Chaotic Circuits Coupled by an Inductor," IEICE Trans., vol. E80-A, no. 5, pp. 869-875, May 1997.


国際会議論文 - International Conference Papers
Yuki Tanda, Tetsuya Yukinari and Masahiro Wada, "Chaos Synchronization Phenomena in Double Pendulum Robots," Proc of International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2012), pp. 80-83, Mar. 2012.
Tetsuya Yukinari, Yuki Tanda and Masahiro Wada, "Reconstruction of Music from Network Motifs using Real Sound Synthesis," Proc of International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2012), pp. 405-408, Mar. 2012.
Hiroyuki Kowa and Masahiro Wada, "Several Spatio-temporal Phase Patterns in Coupled Chaotic Maps with Delays," Proc of International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2012), pp. 736-739, Mar. 2012.
Masahiro Wada, Masahiro Tanaka, Tomohiro Umetani, Minoru Ito, "Study on Sensor Fusion Network and Control for an Inverted Pendulum Mobile Robot," Proc of International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP2011), pp. 79-82, Mar. 2011.
Masahiro Wada, Masahiro Tanaka, Tomohiro Umetani and Minoru Ito, "Framework of Control and Stabilization System for an Inverted Pendulum Moving Roboto," Proc. of the 42nd ISCIE International Symposium on Stochastic Systems Theory and Its Applications, pp. 1-5, Nov. 2010.
Masahiro Wada, Takuya Fukuda, "Analysis of Several Spatio-Temporal Phase Patterns in Coupled Chaotic Maps by Varying Coupling Strenght," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA2010), pp. 500-503, Sep. 2010.
Masahiro Tanaka, Hiroaki Hirano, Shintaro Onishi, Tomohiro Umetani and Masahiro Wada, "Localization of a Moving Robot by Sensor Fusion," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'10), pp. 556-559, Mar. 2010.
Takuya Fukuda and Masahiro Wada, "Spatio-temporal Phase Patterns in Chaotic Maps Coupled by Nonlinear Coupling Strength," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'10), pp. 41-44, Mar. 2010.
Masahiro Wada and Yoshifumi Nishio, "Phase Synchronization in a Coupled Non-Uniform Network of Multi-State Chaotic Oscillators," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'09), pp. 222-225, Oct. 2009.
Yoshitaka Nakano and Masahiro Wada, "A Universal Authentication System Using Chaotic Maps with Hybrid Processing," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09), pp. 637-640, Mar. 2009.
Takayuki Sunagawa and Masahiro Wada, "A Digital Watermarking Method for Dual Layer Images Using a Chaotic Cryptography," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09), pp. 629-632, Mar. 2009.
Masahiro Wada, Masahiro Tanaka and Yoshifumi Nishio, "Stochastic Analysis of Several Synchronization Phenomena on Coupled Chaotic Oscillators," The 40th ISCIE International Symposium on Stochastic Systems Theory and Its Applications, pp. 294-299, Nov. 2008.
Masahiro Wada and Yoshifumi Nishio, "Spatio-Temporal Phenomena of Coupled Multi-State Chaotic Circuits," International Workshop on Visions, Communications and Circuits, pp. 23-26, Nov. 2008.
Yoshitaka Nakano and Masahiro Wada, "An Improved Authentication System Using Chaotic Map and Hash Function," Proc of IEEE CASS Shikoku and Shanghai Chapters Joint Workshop on Nonlinear Circuits and Systems (SSJW'08), pp. 39-41, Aug. 2008.
Takayuki Sunagawa and Masahiro Wada, "A Digital Watermarking for Fingerprints Using a Chaotic Cryptographic Method," Proc of IEEE CASS Shikoku and Shanghai Chapters Joint Workshop on Nonlinear Circuits and Systems (SSJW'08), pp. 18-20, Aug. 2008.
Masahiro Wada and Yoshifumi Nishio, "Phase Synchronization Phenomena on Coupled Multi-State Oscillators," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'08), pp. 144-147, Mar. 2008.
Masahiro Wada and Yoshifumi Nishio, "Coexistence of Several Phase Synchronization in a Ring of Coupled Multi-State Chaotic Oscillators," Proc. of International Symposium on Nonlinear Theory and its Applications(NOLTA'07), pp. 393-396, Sep. 2007.
Masahiro Wada and Ryo Makita, "An improved Watermaking Scheme Using Chaotic Maps," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'07), pp. 445-448, Mar. 2007.
Masahiro Wada and Yoshifumi Nishio, "Pattern Dynamics of Phase Synchronization in a Family of Coupled Several One-Dimensional Chaotic Maps," Proc. of International Symposium on Nonlinear Theory and its Applications(NOLTA'06), pp. 531-534, Sep. 2006.
Shuichi Aono, Masahiro Wada and Yoshifumi Nishio, "Improvement of a Cryptosystem Using Two Chaotic Maps," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP'06), pp. 349-352, Mar. 2006.
Ryo Makita, Seiji Taira and Masahiro Wada, "A Method of Digital Watermarking by using Block Partition and Simple Chaotic Maps," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP'06), pp. 289-292, Mar. 2006.
Masahiro Wada, Kiyoto Kitsuji and Yoshifumi Nishio, "Spatio-temporal Phase Patterns in Coupled Chaotic Maps with Parameter Deviations," Proc. of International Symposium on Nonlinear Theory and its Applications(NOLTA'05), pp. 178-181, Oct. 2005.
Kiyoto Kitatsuji and Masahiro Wada, "Spatio-temporal Chaos and Several Phase Patterns in Coupled Chaotic Maps using Fifth-Power Function," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP'05), pp. 113-116, Mar. 2005.
Masahiro Wada and Yoshifumi Nishio, "Several Phase Synchronization Modes in Coupled Multi-State Chaotic Circuits," Proc. of International Symposium on Nonlinear Theory and its Applications(NOLTA'04), pp. 525-528, Nov. 2004.
Masahiro Wada and Yoshifumi Nishio, "Multimode Asynchronous Oscillations in Coupled Multi-State Chaotic Circuits," Proc. of RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP'04), pp. 535-538, Mar. 2004(CD-ROM).
Masahiro Wada and Yoshifumi Nishio, "Coexistence Phenomena of Chaotic and Non-Chaotic Oscillations in a Three Dimensional Chaotic Circuit," Proc. of International Symposium on Nonlinear Theory and its Applications(NOLTA'02), vol. 2, pp.869-872, Oct. 2002.
Masahiro Wada and Kazumasa Hirai, "A Multi-Agent System Connected Chaotic Systems and its Dynamics," 10th Japanese-German Seminar on Nonlinear Problems in Dynamical Systems, pp. 169-178, Sep. 2002.
Masahiro Wada, Kazumasa Hirai and Yoshifumi Nishio, "A Multi-Agent System and State Control of Coupled Chaotic Maps," Proc. of International Symposium on Nonlinear Theory and its Applications(NOLTA'01), vol.1, pp. 211-214, Oct. 2001.
Masayuki Yamauchi, Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Collisions between Two Phase-Inversion-Waves in an Array of Oscillators," Proc. of IEEE International Symposium on Circuits and Systems (ISCAS'00), vol. 1, pp. 679-682, May 2000.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Analysis of Synchronization of Chaos and its Breakdown on Simple Coupled Chaotic Circuits," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'99), vol. 2, pp. 795-798, Nov. 1999.
Masayuki Yamauchi, Masahiro Wada, Yoshifumi Nishio and Akio Ushida,  "Analysis of Phase Difference Propagation in Oscillators Coupled by Inductors as a Ladder," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'99), vol. 2, pp. 783-786, Nov. 1999.
Masayuki Yamauchi, Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Wave Propagation Phenomena of Phase States in Coupled Oscillators," Proc. of European Conference on Circuit Theory and Design(ECCTD'99), vol. 2, pp. 695-698, Aug. 1999.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Chaotic Itinerancy Phenomena on Coupled n-Double Scrolls Chaotic Circuits," Proc. of IEEE International Symposium on Circuits and Systems (ISCAS'99), vol. 5, pp. 487-490, May 1999.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Riddled Basins and Unstable Periodic Orbits in Coupled Chaotic Circuits," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'98), vol. 2, pp. 635-638, Sep. 1998.
Masahiro Wada, Junji Kawata, Yoshifumi Nishio and Akio Ushida, "BER Performance of Chaos Communication System Including Modulation-Demodulation Circuits," Proc. of IEEE International Symposium on Circuits and Systems (ISCAS'98), vol. 3, pp. 267-270, May 1998.
Masahiro Wada, Junji Kawata, Yoshifumi Nishio and Akio Ushida, "Influence of Modulation-Demodulation Circuits on Chaos Synchronization," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'97), vol. 1, pp. 85-88, Nov. 1997.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Blowout Bifurcation and Riddled Basin on Simple Coupled Chaotic Circuits," Proc. of European Conference on Circuit Theory and Design (ECCTD'97), vol. 3, pp. 1269-1273, Aug. 1997.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Bifurcation Phenomena Generated in Simple Coupled Chaotic Circuits," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'96), pp. 353-356, Oct. 1996.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Breakdown of In-Phase Synchronization of Two Chaotic Circuits Coupled by an Inductor," Proc. of IEEE International Symposium on Circuits and Systems (ISCAS'96), vol. 3, pp. 515-518, May 1996.
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Bifurcation Phenomena of Anti-Phase Synchronization of Two Chaotic Circuits Coupled by an Inductor," Proc. of International Symposium on Nonlinear Theory and its Applications (NOLTA'95), vol. 1, pp. 355-358, Nov. 1995.

研究報告など - Technical Reports and Others
Takuya Fukuda and Masahiro Wada, "Spatio-temporal Phenomena in Coupled Chaotic Maps with Non-uniform Coupling Strength," IEEE Workshop on Nonlinear Circuit Networks, Dec. 2009.
和田昌浩, 砂川嵩行, 中野義隆, "カオス写像を利用したセキュリティ技術-電子透かしとログイン認証への応用-," 甲南大学紀要知能情報学編, vol. 2, no. 1, pp. 47-60, 2009.
Takayuki Sunagawa and Masahiro Wada, "A Simple Method of Digital Watermarking for Biometrics Using a Chaotic Cryptography," IEEE Workshop on Nonlinear Circuit Networks, Dec. 2008.
Yoshitaka Nakano and Masahiro Wada, "A Simple Authentication System Using Several Chaotic Maps," IEEE Workshop on Nonlinear Circuit Networks, Dec. 2008.
Ryo Makita and Masahiro Wada, "An Improved Digital Watermarking Method Using Bernoulli Shift Chaotic Maps," IEEE Workshop on Nonlinear Circuit Networks, Dec. 2006.
北辻研人, 和田昌浩: "5次のカオス写像を結合した系にみられる時空カオス現象," 電子情報通信学会 2005基礎・境界ソサイエティ大会 pp. 49, 2005年9月.
平良誠司, 牧田亮, 和田昌浩: "カオス写像を用いた電子透かしの一手法," 電子情報通信学会 2005基礎・境界ソサイエティ大会 pp. 184, 2005年9月.
和田昌浩, 西尾芳文: "複数状態を有するカオス回路の結合系にみられる同期モード," 電子情報通信学会 2004基礎・境界ソサイエティ大会 pp. 49, 2004年9月.
和田昌浩, 西尾芳文: "対称な区分線形抵抗を含むカオス回路にみられる同一パラメータでのカオスと周期振動の共存現象," 電子情報通信学会 信学技報 NLP2003-83, vol. 103, no. 375, pp. 1-6, 2003年10月.
山内将行, 和田昌浩, 西尾芳文, 牛田明夫: "2種類のインダクタによって結合された発振器回路にみられる位相反転波動," 電子情報通信学会 信学技報, NLP2000-92, vol. 100, no. 469, pp. 1-8, 2000年11月.
山内将行, 和田昌浩, 西尾芳文, 牛田明夫: "梯子状に結合された発振器回路にみられる位相波の衝突について," 第13回回路とシステム(軽井沢)ワークショップ論文集, pp. 461-466, 2000年4月.
和田昌浩, 西尾芳文, 牛田明夫: "インダクタで結合されたカオス発生回路にみられるカオス同期の崩壊現象," 電気関係学会四国支部連合大会, 講演論文集, pp. 26, 1999年10月.
山内将行, 和田昌浩, 西尾芳文, 牛田明夫: "インダクタで結合された発振器回路にみられる位相差の伝搬現象," 電気関係学会四国支部連合大会, 講演論文集, pp. 24, 1999年10月.
和田昌浩, 西尾芳文, 牛田明夫: "AM変復調回路を含むカオス通信システムの評価," 電子情報通信学会 信学技報 NLP99-29, vol. 99, no. 134, pp. 23-28, 1999年6月.
山内将行, 和田昌浩, 西尾芳文, 牛田明夫: "インダクタ結合ラダー・オシレータにみられる位相波の解析," 電子情報通信学会 信学技報 NLP99-17, vol. 99, no. 133, pp. 23-30, 1999年6月.
山内将行, 西中浩文, 和田昌浩, 西尾芳文, 牛田明夫: "インダクタ結合ラダー・オシレータにみられる位相波," 電子情報通信学会 信学技報 NLP99-8, vol. 99, no. 42, pp. 1-7, 1999年5月.
和田昌浩, 西尾芳文, 牛田明夫: "7領域の区分線形素子を含むChua回路にみられるカオス現象," 電気関係学会四国支部連合大会, 講演論文集 pp. 28, 1998年10月.
山内将行, 和田昌浩, 西尾芳文, 牛田明夫: "インダクタで結合された発振器回路にみられる波動現象," 電気関係学会四国支部連合大会, 講演論文集 pp. 23, 1998年10月.
山内将行, 和田昌浩, 西尾芳文, 牛田明夫: "梯子状に結合した発振器回路にみられる同期状態の波動現象," 電子情報通信学会 信学技報 NLP98-19, vol. 98, no. 45, pp. 81-88, 1998年5月.
Masahiro Wada, Junji Kawata, Yoshifumi Nishio and Akio Ushida, "Chaos Synchronization Phenomena on Modulation-Demodulation System," 電気関係学会四国支部連合大会, 講演論文集 pp. 9, 1997年10月.
和田昌浩, 西尾芳文, 牛田明夫: "簡単なカオス発生回路にみられるカオス同期の崩壊について," 電子情報通信学会 信学技報 NLP97-9, vol. 97, no. 52, pp. 61-66, 1997年5月.
和田昌浩, 西尾芳文, 牛田明夫: "リアクタンスで結合されたカオス回路にみられる分岐現象," 電子情報通信学会 信学技報 NLP96-20, vol. 96, no. 73, pp. 67-74, 1996年5月
Masahiro Wada, Yoshifumi Nishio and Akio Ushida, "Anti-Phase Synchronization of Two Chaotic Circuits Coupled by an Inductor," 電子情報通信学会 信学技報 NLP95-79, vol. 95, no. 368, pp. 117-124, 1995年11月.
和田昌浩, 西尾芳文, 牛田明夫: "Breakdown of In-Phase Synchronization of Simple Coupled Chaotic Circuits," 電気関係学会四国支部連合大会, 講演論文集 pp. 9, 1995年11月.
和田昌浩, 西尾芳文, 牛田明夫: "インダクタで結合された2つのカオス回路の同期現象," 電子情報通信学会 信学技報 NLP95-9, vol. 95, no. 47, pp. 65-72, 1995年5月.
 
講演・口頭発表など(発表資料のみ)
和田昌浩, "多状態カオス結合系における同期状態の共存現象と今後の研究動向", 徳島大, 2007年12月7日
和田昌浩, "カオス:天気予報はなぜ当たらない!?", ひょうご講座, 2007年11月7日
和田昌浩, "新しい情報技術とWebアプリケーション", 知的情報通信研究所公開講座, 2006年8月5日
和田昌浩, "複雑系・カオス結合系の可能性と展望", 徳島大, 2006年3月18日
和田昌浩, "カオスシステムの結合系:カオスとセキュリティ技術", 徳島大, 2005年7月3日
和田昌浩, "複雑系・カオス結合系の可能性と展望", 徳島大, 2005年1月27日
和田昌浩, "結合カオス系と創発システム", 上智大学セミナーハウス, 2000年8月21日