**International Journals**

- Takumi Hamada and Shigemasa Takai: Reliable decentralized failure diagnosis of discrete event systems using single-level inference; Discrete Event Dynamic Systems: Theory and Applications, accepted for publication.
- Wataru Hashimoto, Kazumune Hashimoto, Akifumi Wachi, Xun Shen, Masako Kishida, and Shigemasa Takai: Data-efficient safe learning and control with on-board sensors: Bayesian meta-learning and barrier function based approach; Advanced Robotics, accepted for publication.
- Shigemasa Takai and Ratnesh Kumar: Nonexistence of upper bound to inferencing level in decentralized discrete event control; IEEE Transactions on Automatic Control, accepted for publication.
- Koki Okamoto, Naoki Hayashi, and Shigemasa Takai: Distributed online adaptive gradient descent with event-triggered communication; IEEE Transactions on Control of Network Systems, Vol. 11, No. 2, pp. 610-622, 2024.
- Keishin Tada, Naoki Hayashi, and Shigemasa Takai: Distributed online primal-dual subgradient method on unbalanced directed networks; Advanced Robotics, Vol. 38, No. 9-10, pp. 591-602, 2024.
- Hiroaki Sakuma, Naoki Hayashi, and Shigemasa Takai: Distributed primal-dual method on unbalanced digraphs with row stochasticity; International Journal of Control, Vol. 97, No. 6, pp. 1377-1388, 2024.
- Daichi Ishikawa, Naoki Hayashi, and Shigemasa Takai: Quantized distributed event-triggered stochastic gradient-tracking for nonconvex optimization; IEICE Transactions on Fundamentals, Vol. E107-A, No. 5, pp. 762-769, 2024.
- Wang Zhijun, Kazumune Hashimoto, Wataru Hashimoto, and Shigemasa Takai: A lifting approach to learning-based self-triggered control with Gaussian processes; Advanced Robotics, Vol. 38, No. 6, pp. 410-420, 2024.
- Lichen Ding, Kazumune Hashimoto, and Shigemasa Takai: Synthesis of event-triggered controllers for SIRS epidemic models; Nonlinear Analysis: Hybrid Systems, Vol. 51, Article No. 101437, 16 pages, 2024.
- Keishin Tada, Naoki Hayashi, and Shigemasa Takai: Constrained distributed online convex optimization with bandit feedback for unbalanced digraphs; IET Control Theory & Applications, Vol. 18, No. 2, pp. 184-200, 2024.
- Akihito Hayano and Shigemasa Takai: A general architecture for intersection-based decentralized supervisory control of discrete event systems; IEEE Transactions on Automatic Control, Vol. 69, No. 1, pp. 674-680, 2024.
- Junya Yoshida, Naoki Hayashi, and Shigemasa Takai: Quantized gradient descent algorithm for distributed nonconvex optimization; IEICE Transactions on Fundamentals, Vol. E106-A, No. 10, pp. 1297-1304, 2023.
- Keito Inoue, Naoki Hayashi, and Shigemasa Takai: Distributed online optimization with dynamic coupling constraints under time-varying communication delays; IEEE Access, Vol. 11, pp. 87256-87269, 2023.
- Konika Rani, Norimasa Ozaki, Yoichiro Hironaka, Kazumune Hashimoto, Ryosuke Kodama, Kanji Mukai, Hirotaka Nakamura, Shigemasa Takai, and Hideo Nagatomo: Prediction of superimposed laser shot number for copper using deep convolutional neural network; Optics Express, Vol. 31, No. 15/17, pp. 24045-24053, 2023.
- Jinglun Li and Shigemasa Takai: Maximally permissive supervisors for nonblocking similarity control of nondeterministic discrete-event systems; IEEE Transactions on Automatic Control, Vol. 68, No. 6, pp. 3529-3544, 2023.
- Shigemasa Takai: Polynomial-time verification for bisimilarity control of partially observed nondeterministic discrete event systems with deterministic specifications; Automatica, Vol. 125, Article No. 110940, 5 pages, 2023.
- Yoshihiro Kameoka, Naoki Hayashi, and Shigemasa Takai: Cooperative tracking in camera sensor networks with sliding mode control; Advanced Robotics, Vol. 37, No. 1-2, pp. 130-140, 2023.
- Weilin Wang, Yanwei Zang, Shigemasa Takai, Lachlan L. H. Andrew, and Chaohui Gong: Deterministic supervisory control with flexible upper-bounds on observation delay and control delay; Automatica, Vol. 144, Article No. 110480, 13 pages, 2022.
- Takashi Adachi, Naoki Hayashi, and Shigemasa Takai: Cooperative target tracking by multiagent camera sensor networks via Gaussian process; IEEE Access, Vol. 10, pp. 71717-71727, 2022.
- Akihito Wada and Shigemasa Takai: Decentralized diagnosis of discrete event systems subject to permanent sensor failures; Discrete Event Dynamic Systems: Theory and Applications, Vol. 32, No. 2, pp. 159-193, 2022.
- Shigemasa Takai and Sho Yoshida: Reliable decentralized supervisory control of discrete event systems with single-level inference; IEICE Transactions on Fundamentals, Vol. E105-A, No. 5, pp. 799-807, 2022.
- Wataru Hashimoto, Kazumune Hashimoto, and Shigemasa Takai: STL2vec: Signal temporal logic embeddings for control synthesis with recurrent neural networks; IEEE Robotics and Automation Letters, Vol. 7, No. 2, pp. 5246-5253, 2022.
- Jinglun Li and Shigemasa Takai: Maximally permissive modular similarity control of composite nondeterministic discrete event systems; IEEE Control Systems Letters, Vol. 6, pp. 2305-2310, 2022.
- Jinglun Li and Shigemasa Takai: Synthesis of maximally permissive supervisors for similarity control of partially observed nondeterministic discrete event systems; Automatica, Vol. 135, Article No. 109978, 13 pages, 2022.
- Jinglun Li and Shigemasa Takai: Modular similarity control of nondeterministic discrete event systems with modular specifications; IEEE Control Systems Letters, Vol. 6, pp. 1358-1363, 2022.
- Makoto Yamashita, Naoki Hayashi, Takeshi Hatanaka, and Shigemasa Takai: Logarithmic regret for distributed online subgradient method over unbalanced directed networks; IEICE Transactions on Fundamentals, Vol. E104-A, No. 8, pp. 1019-1026, 2021.
- Takashi Adachi, Naoki Hayashi, and Shigemasa Takai: Distributed gradient descent method with edge-based event-driven communication for non-convex optimization; IET Control Theory & Applications, Vol. 15, No. 12, pp. 1588-1598, 2021.
- Shigemasa Takai: Synthesis of maximally permissive supervisors for nondeterministic discrete event systems with nondeterministic specifications; IEEE Transactions on Automatic Control, Vol. 66, No. 7, pp. 3197-3204, 2021.
- Hiroaki Sakuma, Naoki Hayashi, and Shigemasa Takai: Distributed primal-dual perturbation algorithm over unbalanced directed networks; IEEE Access, Vol. 9, pp. 75324-75335, 2021.
- Shigemasa Takai: A general framework for diagnosis of discrete event systems subject to sensor failures; Automatica, Vol. 129, Article No. 109669, 12 pages, 2021.
- Yuichi Kajiyama, Naoki Hayashi, and Shigemasa Takai: Linear convergence of consensus-based quantized optimization for smooth and strongly convex cost functions; IEEE Transactions on Automatic Control, Vol. 66. No. 3, pp. 1254-1261, 2021.
- Kohei Shimatani and Shigemasa Takai: Deterministic supervisors for bisimilarity control of partially observed nondeterministic discrete event systems with deterministic specifications; IEICE Transactions on Fundamentals, Vol. E104-A, No. 2, pp. 438-446, 2021.
- Makoto Yamashita, Naoki Hayashi, and Shigemasa Takai: Dynamic regret analysis for event-triggered distributed online optimization algorithm; IEICE Transactions on Fundamentals, Vol. E104-A, No. 2, pp. 430-437, 2021.
- Naoki Hayashi, Yuichi Kajiyama, and Shigemasa Takai: Consensus-based quantized algorithm for convex optimization with smooth cost functions; IEICE Transactions on Fundamentals, Vol. E103-A, No. 2, pp. 435-442, 2020.
- Naoki Hayashi, Kazuyuki Ishikawa, and Shigemasa Takai: Distributed subgradient method for constrained convex optimization with quantized and event-triggered communication; IEICE Transactions on Fundamentals, Vol. E103-A, No. 2, pp. 428-434, 2020.
- Shimpei Miura and Shigemasa Takai: Decentralized supervisory control of timed discrete event systems with conditional decisions for enforcing forcible events; IEICE Transactions on Fundamentals, Vol. E103-A, No. 2, pp. 417-427, 2020.
- Naoki Hayashi, Tomohiro Sugiura, Yuichi Kajiyama, and Shigemasa Takai: Distributed event-triggered algorithm for unconstrained convex optimization over weight-balanced directed networks; IET Control Theory & Applications, Vol. 14, No. 2, pp. 253-261, 2020.
- Shigemasa Takai: Bisimilarity enforcing supervisory control of nondeterministic discrete event systems with nondeterministic specifications; Automatica, Vol. 108, Article No. 108470, 2019.
- Jinglun Li and Shigemasa Takai: Maximally permissive nonblocking supervisors for similarity control of nondeterministic discrete event systems under event and state observations; IEICE Transactions on Fundamentals, Vol. E102-A, No. 2, pp. 399-403, 2019.
- Yuichi Kajiyama, Naoki Hayashi, and Shigemasa Takai: Distributed constrained convex optimization with accumulated subgradient information over undirected switching networks; IEICE Transactions on Fundamentals, Vol. E102-A, No. 2, pp. 343-350, 2019.
- Yuichi Kajiyama, Naoki Hayashi, and Shigemasa Takai: Distributed subgradient method with edge-based event-triggered communication; IEEE Transactions on Automatic Control, Vol. 63, No. 7, pp. 2248-2255, 2018.
- Shigemasa Takai and Ratnesh Kumar: Implementation of inference-based diagnosis: Computing delay bound and ambiguity levels; Discrete Event Dynamic Systems: Theory and Applications, Vol. 28, No. 2, pp. 315-348, 2018.
- Naoki Kushi and Shigemasa Takai: Synthesis of similarity enforcing supervisors for nondeterministic discrete event systems; IEEE Transactions on Automatic Control, Vol. 63, No. 5, pp. 1457-1464, 2018.
- Kazuyuki Ishikawa, Naoki Hayashi, and Shigemasa Takai: Consensus-based distributed particle swarm optimization with event-triggered communication; IEICE Transactions on Fundamentals, Vol. E101-A, No. 2, pp. 338-344, 2018.
- Hiroki Yamada and Shigemasa Takai: Nonblocking similarity control of nondeterministic discrete event systems under event and state observations; IEICE Transactions on Fundamentals, Vol. E101-A, No. 2, pp. 328-337, 2018.
- Shigemasa Takai and Ratnesh Kumar: A generalized framework for inference-based diagnosis of discrete event systems capturing both disjunctive and conjunctive decision-making; IEEE Transactions on Automatic Control, Vol. 62, No. 6, pp. 2778-2793, 2017.
- Naoki Hayashi, Kohei Segawa, and Shigemasa Takai: 2D Voronoi coverage control with Gaussian density functions by line integration; SICE Journal of Control, Measurement, and System Integration, Vol. 10, No. 2，pp. 110-116, 2017.
- Naoki Hayashi and Shigemasa Takai: Distributed source identification by two-hop consensus dynamics with uniform time-varying communication time-delays; SICE Journal of Control, Measurement, and System Integration, Vol. 10, No. 2，pp. 70-76, 2017.
- Shoichi Yokota, Takashi Yamamoto, and Shigemasa Takai: Computation of the delay bounds and synthesis of diagnosers for decentralized diagnosis with conditional decisions; Discrete Event Dynamic Systems: Theory and Applications, Vol. 27, No. 1，pp. 45-84, 2017.
- Masanori Hoshino and Shigemasa Takai: Decentralized similarity control of composite nondeterministic discrete event systems with local specifications; IEICE Transactions on Fundamentals, Vol. E100-A, No. 2, pp. 395-405, 2017.
- Shiori Miyake, Naoki Hayashi, and Shigemasa Takai: Discrete-time average consensus with multi-hop communication; SICE Journal of Control, Measurement, and System Integration, Vol. 9, No. 5, pp. 187-191, 2016.
- Misato Yokotani, Tetsuya Kondo, and Shigemasa Takai: Abstraction-based verification and synthesis for prognosis of discrete event systems; Asian Journal of Control, Vol. 18, No. 4, pp. 1279-1288, 2016.
- Shinji Iwase, Naoki Hayashi, and Shigemasa Takai: A gradient-based approach for discrete-time average consensus with self-triggered control; SICE Journal of Control, Measurement, and System Integration, Vol. 9, No. 3, pp. 122-127, 2016.
- Toshimitsu Ushio and Shigemasa Takai: Nonblocking supervisory control of discrete event systems modeled by Mealy automata with nondeterministic output functions; IEEE Transactions on Automatic Control, Vol. 61, No. 3, pp. 799-804, 2016.
- Nam Tung Vu and Shigemasa Takai: Synthesis of output feedback controllers for bisimilarity control of transition systems; IEICE Transactions on Fundamentals, Vol. E99-A, No. 2, pp. 483-490, 2016.
- Naoki Kanagawa and Shigemasa Takai: Diagnosability of discrete event systems subject to permanent sensor failures; International Journal of Control, Vol. 88, No. 12, pp. 2598-2610, 2015.
- Naoki Hayashi and Shigemasa Takai: GTS-based communication task scheduling for quantized output consensus over IEEE 802.15.4 wireless networks; Automatica, Vol. 55, pp. 6-11, 2015.
- Mustafa Seckin Durmus, Shigemasa Takai, and Mehmet Turan Soylemez: Decision making strategies in fixed-block railway signaling systems: A discrete event systems approach; IEEJ Transactions on Electrical and Electronic Engineering, Vol. 10, No. 2, pp. 186-194, 2015.
- Takashi Yamamoto and Shigemasa Takai: Online synthesis of conjunctive decentralized diagnosers for discrete event systems; IEICE Transactions on Fundamentals, Vol. E98-A, No. 2, pp. 650-653, 2015.
- Shigemasa Takai: Robust prognosability for a set of partially observed discrete event systems; Automatica, Vol. 51, pp. 123-130, 2015.
- Kenta Hamada, Naoki Hayashi, and Shigemasa Takai: Event-triggered and self-triggered control for discrete-time average consensus problems; SICE Journal of Control, Measurement, and System Integration, Vol. 7, No. 5, pp. 297-303, 2014.
- Mustafa Seckin Durmus, Shigemasa Takai, and Mehmet Turan Soylemez: Fault diagnosis in fixed-block railway signaling systems: A discrete event systems approach; IEEJ Transactions on Electrical and Electronic Engineering, Vol. 9, No. 5, pp. 523-531, 2014.
- Takashi Yamamoto and Shigemasa Takai: Reliable decentralized diagnosis of discrete event systems using the conjunctive architecture; IEICE Transactions on Fundamentals, Vol. E97-A, No. 7, pp. 1605-1614, 2014.
- Katsuyuki Kimura and Shigemasa Takai: Maximally permissive similarity enforcing supervisors for nondeterministic discrete event systems under event and state observations; IEICE Transactions on Fundamentals, Vol. E97-A, No. 7, pp. 1500-1507, 2014.
- Katsuyuki Kimura and Shigemasa Takai: Bisimilarity control of nondeterministic discrete event systems under event and state observations; IEICE Transactions on Information and Systems, Vol. E97-D, No. 5, pp. 1140-1148, 2014.
- Mustafa Seckin Durmus and Shigemasa Takai: Modeling moving-block railway systems: A generalized batches Petri net approach; SICE Journal of Control, Measurement, and System Integration, Vol. 6, No. 6, pp. 403-410, 2013.
- Shuhei Nakata and Shigemasa Takai: Reliable decentralized failure diagnosis of discrete event systems; SICE Journal of Control, Measurement, and System Integration, Vol. 6, No. 5, pp. 353-359, 2013.
- Masashi Nomura and Shigemasa Takai: A synthesis method for decentralized supervisors for timed discrete event systems; IEICE Transactions on Fundamentals, Vol. E96-A, No. 4, pp. 835-839, 2013.
- Masashi Nomura and Shigemasa Takai: Computation of sublanguages for synthesizing decentralized supervisors for timed discrete event systems; IEICE Transactions on Fundamentals, Vol. E96-A, No. 1, pp. 345-355, 2013.
- Shigemasa Takai: Verification of robust diagnosability for partially observed discrete event systems; Automatica, Vol. 48, No. 8, pp. 1913-1919, 2012.
- Masashi Nomura and Shigemasa Takai: Decentralized supervisory control of timed discrete event systems using a partition of the forcible event set; IEICE Transactions on Fundamentals, Vol. E95-A, No. 5, pp. 952-960, 2012.
- Shigemasa Takai and Ratnesh Kumar: Distributed failure prognosis of discrete event systems with bounded-delay communications; IEEE Transactions on Automatic Control, Vol. 57, No. 5, pp. 1259-1265, 2012.
- Shigemasa Takai and Toshimitsu Ushio: Verification of codiagnosability for discrete event systems modeled by Mealy automata with nondeterministic output functions; IEEE Transactions on Automatic Control, Vol. 57, No. 3, pp. 798-804, 2012.
- Masashi Nomura and Shigemasa Takai: Decentralized supervisory control of timed discrete event systems; IEICE Transactions on Fundamentals, Vol. E94-A, No. 12, pp. 2802-2809, 2011.
- Shigemasa Takai and Yuta Watanabe: Modular synthesis of maximally permissive opacity-enforcing supervisors for discrete event systems; IEICE Transactions on Fundamentals, Vol. E94-A, No. 3, pp. 1041-1044, 2011.
- Shigemasa Takai and Ratnesh Kumar: Inference-based decentralized prognosis in discrete event systems; IEEE Transactions on Automatic Control, Vol. 56, No. 1, pp. 165-171, 2011.
- Shigemasa Takai and Ratnesh Kumar: Synthesis of over-approximating inference-based decentralized supervisors for discrete event systems; IEEE Transactions on Automatic Control, Vol. 55, No. 8, pp. 1881-1887, 2010.
- Shengbing Jiang, Ratnesh Kumar, Shigemasa Takai, and Wenbin Qiu: Decentralized control of discrete event systems with multiple local specifications; IEEE Transactions on Automation Science and Engineering, Vol. 7, No. 3, pp. 512-522, 2010.
- Shigemasa Takai and Ratnesh Kumar: Decentralized diagnosis for nonfailures of discrete event systems using inference-based ambiguity management; IEEE Transactions on Systems, Man, and Cybernetics-Part A: Systems and Humans, Vol. 40, No. 2, pp. 406-412, 2010.
- Ratnesh Kumar and Shigemasa Takai: Decentralized prognosis of failures in discrete event systems; IEEE Transactions on Automatic Control, Vol. 55, No. 1, pp. 48-59, 2010.
- Ratnesh Kumar and Shigemasa Takai: Inference-based ambiguity management in decentralized decision-making: Decentralized diagnosis of discrete-event systems; IEEE Transactions on Automation Science and Engineering, Vol. 6, No. 3, pp. 479-491, 2009.
- Shigemasa Takai and Yusuke Oka: A formula for the supremal controllable and opaque sublanguage arising in supervisory control; SICE Journal of Control, Measurement, and System Integration, Vol. 1, No. 4, pp. 307-311, 2008.
- Shigemasa Takai and Ratnesh Kumar: Synthesis of inference-based decentralized control for discrete event systems; IEEE Transactions on Automatic Control, Vol. 53, No. 2, pp. 522-534, 2008.
- Ratnesh Kumar and Shigemasa Takai: Inference-based ambiguity management in decentralized decision-making: Decentralized control of discrete event systems; IEEE Transactions on Automatic Control, Vol. 52, No. 10, pp. 1783-1794, 2007.
- Shigemasa Takai and Yongming Bai: Computation of controllable sublanguages for unbounded Petri nets using their approximation models; IEICE Transactions on Fundamentals, Vol. E89-A, No. 11, pp. 3250-3253, 2006.
- Shigemasa Takai and Toshimitsu Ushio: A new class of supervisors for timed discrete event systems under partial observation; Discrete Event Dynamic Systems: Theory and Applications, Vol. 16, No. 2, pp. 257-278, 2006.
- Shigemasa Takai and Toshimitsu Ushio: Decentralized supervisory control of discrete event systems using dynamic default control; IEICE Transactions on Fundamentals, Vol. E88-A, No. 11, pp. 2982-2988, 2005.
- Ratnesh Kumar, Shigemasa Takai, Martin Fabian, and Toshimitsu Ushio: Maximally permissive mutually and globally nonblocking supervision with application to switching control; Automatica, Vol. 41, No. 8, pp. 1299-1312, 2005.
- Shigemasa Takai, Ratnesh Kumar, and Toshimitsu Ushio: Characterization of co-observable languages and formulas for their super/sublanguages; IEEE Transactions on Automatic Control, Vol. 50, No. 4, pp. 434-447, 2005.
- Toshimitsu Ushio and Shigemasa Takai: Control-invariance of hybrid systems with forcible events; Automatica, Vol. 41, No. 4, pp. 669-675, 2005.
- Shigemasa Takai and Toshimitsu Ushio: Supervisory control of a class of concurrent discrete event systems under partial observation; Discrete Event Dynamic Systems: Theory and Applications, Vol. 15, No. 1, pp. 7-32, 2005.
- Yoshitaka Ukawa, Toshimitsu Ushio, Masakazu Adachi, and Shigemasa Takai: Formal detection of three automation surprises in human-machine interaction; IEICE Transactions on Fundamentals, Vol. E87-A, No. 11, pp. 2878-2884, 2004.
- Shigemasa Takai and Toshimitsu Ushio: Supervisory control of a class of concurrent discrete event systems; IEICE Transactions on Fundamentals, Vol. E87-A, No. 4, pp. 850-855, 2004.
- Guisheng Zhai, Xinkai Chen, Shigemasa Takai, and Kazunori Yasuda: Stability and H_infinity disturbance attenuation analysis for LTI control systems with controller failures; Asian Journal of Control, Vol. 6, No. 1, pp. 104-111, 2004.
- Shigemasa Takai: Maximizing robustness of supervisors for partially observed discrete event systems; Automatica, Vol. 40, No. 3, pp. 531-535, 2004.
- Shigemasa Takai and Toshimitsu Ushio: Reliable decentralized supervisory control of discrete event systems with the conjunctive and disjunctive fusion rules; IEICE Transactions on Fundamentals, Vol. E86-A, No. 11, pp. 2731-2738, 2003.
- Guisheng Zhai, Shigemasa Takai, Anthony N. Michel, and Xuping Xu: Improving closed-loop stability of second-order LTI systems by hybrid static output feedback; International Journal of Hybrid Systems, Vol. 3, No. 2 & 3, pp. 237-250, 2003.
- Shigemasa Takai and Toshimitsu Ushio: Effective computation of an Lm(G)-closed, controllable, and observable sublanguage arising in supervisory control; Systems & Control Letters, Vol. 49, No. 3, pp. 191-200, 2003.
- Shigemasa Takai and Toshimitsu Ushio: Reliable decentralized supervisory control for marked language specifications; Asian Journal of Control, Vol. 5, No. 1, pp. 160-167, 2003.
- Shigemasa Takai: Synthesis of maximally permissive and robust supervisors for prefix-closed language specifications; IEEE Transactions on Automatic Control, Vol. 47, No. 1, pp. 132-136, 2002.
- Shigemasa Takai and Toshimitsu Ushio: A modified normality condition for decentralized supervisory control of discrete event systems; Automatica, Vol. 38, No. 1, pp. 185-189, 2002.
- Shigemasa Takai and Toshimitsu Ushio: Weak normality for nonblocking supervisory control of discrete event systems under partial observation; IEICE Transactions on Fundamentals, Vol. E84-A, No. 11, pp. 2822-2828, 2001.
- Shigemasa Takai and Toshimitsu Ushio: On-line synthesis of decentralized supervisors for discrete event systems; IEICE Transactions on Fundamentals, Vol. E83-A, No. 11, pp. 2282-2285, 2000.
- Shigemasa Takai and Toshimitsu Ushio: Synthesis of reliable decentralized supervisors for discrete event systems; IEICE Transactions on Fundamentals, Vol. E83-A, No. 11, pp. 2212-2218, 2000.
- Shigemasa Takai and Toshimitsu Ushio: Reliable decentralized supervisory control of discrete event systems; IEEE Transactions on Systems, Man, and Cybernetics-Part B: Cybernetics, Vol. 30, No. 5, pp. 661-667, 2000.
- Shigemasa Takai: Supervisory control of partially observed discrete event systems with arbitrary control patterns; International Journal of Systems Science, Vol. 31, No. 5, pp. 649-656, 2000.
- Shigemasa Takai: Robust supervisory control of a class of timed discrete event systems under partial observation; Systems & Control Letters, Vol. 39, No. 4, pp. 267-273, 2000.
- Shigemasa Takai and Yoshinori Ito: Supervisory control of timed event graphs with partial specifications; International Journal of Systems Science, Vol. 30, No. 11, pp. 1187-1192, 1999.
- Shigemasa Takai: Minimizing the set of local supervisors in fully decentralized supervision; IEEE Transactions on Automatic Control, Vol. 44, No. 7, pp. 1441-1444, 1999.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Supervisory control of discrete event systems using partial event and state observations; International Journal of Intelligent Control and Systems, Vol. 2, No. 3, pp. 453-466, 1998.
- Shigemasa Takai, Akiteru Takae, and Shinzo Kodama: The extremal languages arising in supervisory control for service specifications; International Journal of Intelligent Control and Systems, Vol. 2, No. 1, pp. 161-175, 1998.
- Shigemasa Takai and Shinzo Kodama: Formulas for the extremal controllable sequences in timed-event graphs; IEEE Transactions on Automatic Control, Vol. 43, No. 10, pp. 1465-1468, 1998.
- Shigemasa Takai: On the language generated under fully decentralized supervision; IEEE Transactions on Automatic Control, Vol. 43, No. 9, pp. 1253-1256, 1998.
- Shigemasa Takai: Optimal state-space partition for control of discrete-event systems with static specifications; IEEE Transactions on Automatic Control, Vol. 43, No. 7, pp. 1013-1016, 1998.
- Shigemasa Takai and Shinzo Kodama: Characterization of all M-controllable subpredicates of a given predicate; International Journal of Control, Vol. 70, No. 4, pp. 541-549, 1998.
- Shigemasa Takai: A characterization of realizable behavior in supervisory control of timed event graphs; Automatica, Vol. 33, No. 11, pp. 2077-2080, 1997.
- Shigemasa Takai: Estimate based limited lookahead supervisory control for closed language specifications; Automatica, Vol. 33, No. 9, pp. 1739-1743, 1997.
- Shigemasa Takai and Shinzo Kodama: M-controllable subpredicates arising in state feedback control of discrete event systems; International Journal of Control, Vol. 67, No. 4, pp. 553-566, 1997.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Balanced state feedback controllers for discrete event systems described by the Golaszewski-Ramadge model; IEICE Transactions on Fundamentals, Vol. E80-A, No. 5, pp. 928-931, 1997.
- Jae-won Yang, Shigemasa Takai, Toshimitsu Ushio, Sadatoshi Kumagai, and Shinzo Kodama: Stabilization of timed discrete event systems with forcible events; IEICE Transactions on Fundamentals, Vol. E80-A, No. 3, pp. 571-573, 1997.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Static-state feedback control of discrete-event systems under partial observation; IEEE Transactions on Automatic Control, Vol. 40, No. 11, pp. 1950-1954, 1995.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: The infimal controllable and n-observable superpredicate of a given predicate; IEEE Transactions on Automatic Control, Vol. 40, No. 7, pp. 1249-1253, 1995.
- Wooi Voon Chang, Toshimitsu Ushio, Shigemasa Takai, Sadatoshi Kumagai, and Shinzo Kodama: A forbidden marking problem in controlled complementary-places Petri nets; IEICE Transactions on Fundamentals, Vol. E78-A, No. 3, pp. 382-388, 1995.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Stabilization and blocking in state feedback control of discrete event systems; Discrete Event Dynamic Systems: Theory and Applications, Vol. 5, No. 1, pp. 33-57, 1995.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Concurrency and maximally permissive feedback in Petri nets with external input places; International Journal of Control, Vol. 60, No. 4, pp. 617-629, 1994.
- Shigemasa Takai, Toshimitsu Ushio and Shinzo Kodama: Decentralized state feedback control of discrete event systems; Systems & Control Letters, Vol. 22, No. 5, pp. 369-375, 1994.

**International Conferences,
Symposiums, and Workshops**

- Yuki Uehara, Kazumune Hashimoto, and Shigemasa Takai: Sampling-based motion planning for lunar water exploration under time-variant illumination areas; Proceedings of the 2025 AIAA SciTech Forum, accepted for publication.
- Akari Kimura and Shigemasa Takai: Deterministic decentralized supervisors for bisimilarity control of nondeterministic discrete event systems; Proceedings of the 2024 American Control Conference, pp. 5426-5431, 2024.
- Xun Shen, Akifumi Wachi, Wataru Hashimoto, Kazumune Hashimoto, and Shigemasa Takai: Safe reinforcement learning using model predictive control with probabilistic control barrier function; Proceedings of the 2024 American Control Conference, pp. 74-79, 2024.
- Shigemasa Takai and Takashi Yamamoto: Verification of codiagnosability arising in intersection-based decentralized diagnosis of discrete event systems; Proceedings of the 17th International Workshop on Discrete Event Systems, pp. 132-137, 2024.
- Shigemasa Takai and Takashi Yamamoto: Codiagnosability for intersection-based decentralized diagnosis of discrete event systems; Proceedings of the 22nd IFAC World Congress, pp. 3985-3590, 2023.
- Akihito Hayano and Shigemasa Takai: A general intersection-based architecture for decentralized supervisory control of discrete event systems; Proceedings of the 61st IEEE Conference on Decision and Control, pp. 4244-4249, 2022.
- Keishin Tada, Naoki Hayashi, and Shigemasa Takai: Distributed inequality constrained online optimization for unbalanced digraphs using row stochastic property; Proceedings of the 61st IEEE Conference on Decision and Control, pp. 2283-2285, 2022.
- Takumi Hamada and Shigemasa Takai: Verification of reliable inference-diagnosability for decentralized diagnosis with single-level inference; Proceedings of the 16th International Workshop on Discrete Event Systems, pp. 244-249, 2022
- Wataru Hashimoto, Kazumune Hashimoto, Yuga Onoue, and Shigemasa Takai: Learning-based iterative optimal control for unknown systems using Gaussian process regression; Proceedings of the 2022 European Control Conference, pp. 1554-1559, 2022.
- Akari Kimura and Shigemasa Takai: Decentralized control of nondeterministic discrete event systems with deterministic specifications; Proceedings of the 37th International Technical Conference on Circuits/Systems, Computers and Communications, pp. 1-4, 2022.
- Takumi Hamada and Shigemasa Takai: Reliable diagnosability for decentralized diagnosis of discrete event systems with single-level inference; Proceedings of the 2022 American Control Conference, pp. 3746-3751, 2022.
- Jinglun Li and Shigemasa Takai: Maximally permissive nonblocking similarity control of nondeterministic discrete event systems; Proceedings of the 59th IEEE Conference on Decision and Control, pp. 73-78, 2020.
- Shigemasa Takai: A generalized diagnosability condition for diagnosis of discrete event systems subject to sensor failures; Proceedings of the 15th International Workshop on Discrete Event Systems, pp. 344-349, 2020.
- Toshiyuki Miyamoto, Toyohiro Umeda, and Shigemasa Takai: Distributed job shop scheduling using consensus alternating direction method of multipliers; Proceedings of the 21st IFAC World Congress, pp. 10785-10790, 2020.
- Kohei Shimatani and Shigemasa Takai: Deterministic bisimilarity-enforcing supervisors for nondeterministic discrete event systems with deterministic specifications; Proceedings of the 35th International Technical Conference on Circuits/Systems, Computers and Communications, pp. 45-48, 2020.
- Jinglun Li and Shigemasa Takai: Maximally permissive similarity enforcing supervisors for nondeterministic discrete event systems under partial observation; Proceedings of the 58th IEEE Conference on Decision and Control, pp. 1037-1042, 2019.
- Ryoma Sawasaki and Shigemasa Takai: Sufficient condition for state attraction of discrete event systems under partial observation; Proceedings of the SICE Annual Conference 2019, pp. 1432-1435, 2019.
- Akihito Wada and Shigemasa Takai: Verification of codiagnosability for decentralized diagnosis of discrete event systems subject to permanent sensor failures; Proceedings of the 2019 European Control Conference, pp. 1726-1731, 2019.
- Shigemasa Takai: Maximally permissive supervisory control of nondeterministic discrete event systems with nondeterministic specifications; Proceedings of the 57th IEEE Conference on Decision and Control, pp. 3975-3980, 2018.
- Shimpei Miura and Shigemasa Takai: Decentralized control of timed discrete event systems with conditional decisions for enforcement of forcible events; Proceedings of the 57th IEEE Conference on Decision and Control, pp. 3956-3961, 2018.
- Naoki Hayashi, Tomohiro Sugiura, Yuichi Kajiyama, and Shigemasa Takai: Event-triggered consensus-based optimization algorithm for smooth and strongly convex cost functions; Proceedings of the 57th IEEE Conference on Decision and Control, pp. 2120-2125, 2018.
- Kenta Suzuki, Naoki Hayashi, and Shigemasa Takai: Uniform ultimate boundedness of event-triggered control for time-varying nonlinear systems; Proceedings of the 2018 IEEE International Conference on Systems, Man, and Cybernetics, pp. 2003-2008, 2018.
- Itsuki Okubo and Shigemasa Takai: Decentralized supervisor synthesis for composite nondeterministic discrete event systems with local specifications; Proceedings of the SICE Annual Conference 2018, pp. 1793-1796, 2018.
- Makoto Yamashita, Naoki Hayashi, and Shigemasa Takai: Regret analysis of distributed online subgradient method with event-triggered communication; Proceedings of the SICE Annual Conference 2018, pp. 1296-1300, 2018.
- Akihito Wada, Nadda Chawalarat, and Shigemasa Takai: Codiagnosability for decentralized diagnosis of discrete event systems subject to permanent sensor failures; Proceedings of the SICE Annual Conference 2018, pp. 1069-1072, 2018.
- Tatsuya Ito, Kohei Segawa, Naoki Hayashi, and Shigemasa Takai: Cooperative Voronoi tracking by multiple quadrotors with onborad PTZ cameras ; Proceedings of the SICE Annual Conference 2018, pp. 331-335, 2018.
- Shigemasa Takai: Synthesis of bisimilarity enforcing supervisors for nondeterministic discrete event systems; Proceedings of the 14th International Workshop on Discrete Event Systems, pp. 1-6, 2018. Correcting Notice
- Yuichi Kajiyama, Naoki Hayashi, and Shigemasa Takai: Distributed multi-step subgradient algorithm for constrained convex optimization with undirected time-varying communications; Proceedings of the 56th IEEE Conference on Decision and Control, pp. 4650-4655, 2017.
- Hiroki Yamada and Shigemasa Takai: Nonblocking supervisors for similarity control of nondeterministic discrete event systems under event and state observations; Proceedings of the SICE Annual Conference 2017, pp. 160-163, 2017.
- Yuichi Kajiyama, Naoki Hayashi, and Shigemasa Takai: Distributed event-triggered subgradient method for convex optimization with a common constraint set; Proceedings of the 20th IFAC World Congress, pp. 15319-15324, 2017.
- Shigemasa Takai and Ratnesh Kumar: A generalized inference-based prognosis framework for discrete event systems; Proceedings of the 20th IFAC World Congress, pp. 6819-6824, 2017.
- Sho Yoshida and Shigemasa Takai: Reliable conditional-coobservability for decentralized supervisory control of discrete event systems with conditional decisions; Proceedings of the 55th IEEE Conference on Decision and Control, pp. 414-419, 2016.
- Hayato Fujimura, Naoki Hayashi, and Shigemasa Takai: Linear convergence of distributed periodically-triggered ADMM for unconstrained optimization; Proceedings of the SICE Annual Conference 2016, pp. 1735-1736, 2016.
- Shigemasa Takai and Ratnesh Kumar: Delay bound of inference-based decentralized diagnosis in discrete event systems; Proceedings of the 13th International Workshop on Discrete Event Systems, pp. 224-229, 2016.
- Shigemasa Takai and Ratnesh Kumar: A generalized inference-based diagnosis framework for discrete event systems capturing both disjunctive and conjunctive decision-making; Proceedings of the 54th IEEE Conference on Decision and Control, pp. 3522-3527, 2015.
- Kohei Segawa, Kenta Hamada, Naoki Hayashi, and Shigemasa Takai: Cooperative target tracking by 2-level hierarchical PTZ camera sensor networks; Proceedings of the 54th IEEE Conference on Decision and Control, pp. 2975-2980, 2015.
- Koki Abe, Naoki Hayashi, and Shigemasa Takai: Cooperative Voronoi coverage with velocity feedback of centroids; Proceedings of the First International Symposium on Swarm Behavior and Bio-Inspired Robotics, pp. 372-374, 2015.
- Shigemasa Takai and Ratnesh Kumar: Verification of generalized inference diagnosability for decentralized diagnosis of discrete event systems; Proceedings of the 20th IEEE International Conference on Emerging Technologies and Factory Automation, 125, 8 pages, 2015.
- Naoki Kushi and Shigemasa Takai: Supervisor synthesis for similarity control of nondeterministic discrete event systems; Proceedings of the 20th IEEE International Conference on Emerging Technologies and Factory Automation, 291, 4 pages, 2015.
- Naoki Hayashi, Yu Muranishi, and Shigemasa Takai: Distributed event-triggered control for Voronoi coverage; Proceedings of the First International Conference on Event-Based Control, Communication, and Signal Processing, 4 pages, 2015.
- Shoichi Yokota and Shigemasa Takai: Computation of the delay bound in decentralized diagnosis of discrete event systems with conditional decisions; Proceedings of the 53rd IEEE Conference on Decision and Control, pp. 5961-5966, 2014.
- Yu Muranishi, Kenta Hamada, Naoki Hayashi, and Shigemasa Takai: Distributed estimation of 1-D convection-diffusion phenomena by discrete-time event-triggered consensus dynamics; Proceedings of the 53rd IEEE Conference on Decision and Control, pp. 1995-2000, 2014.
- Naoki Kanagawa and Shigemasa Takai: Verification and synthesis for failure diagnosis of discrete event systems subject to permanent sensor failures; Proceedings of the 19th IEEE International Conference on Emerging Technologies and Factory Automation, PD-001147, 8 pages, 2014.
- Kenji Nomura, Naoki Hayashi, and Shigemasa Takai: Distributed event-triggered control for consensus problems with non-linear output functions; Proceedings of the ISCIE/ASME 2014 International Symposium on Flexible Automation, 2014-99S, 4 pages, 2014.
- Naoki Hayashi and Shigemasa Takai: Consensus-based distribution estimation of 1-D diffusion phenomena; Proceedings of the 2014 American Control Conference, pp. 2569-2574, 2014.
- Misato Yokotani and Shigemasa Takai: Abstraction-based verification for partially observed discrete event systems; Proceedings of the 12th International Workshop on Discrete Event Systems, pp. 356-361, 2014.
- Shoichi Kitamura, Kazuyuki Mori, Yoshio Izui, Toshiyuki Miyamoto, and Shigemasa Takai: Operation optimization method for factory power generation plant considering probability distribution; Proceedings of the IASTED International Symposium on Power and Energy, pp. 6-13, 2013.
- Misato Yokotani and Shigemasa Takai: Abstraction-based verification of observability for discrete event systems; Proceedings of the SICE Annual Conference 2013, pp. 1016-1017, 2013.
- Takashi Yamamoto and Shigemasa Takai: Conjunctive decentralized diagnosis of discrete event systems; Proceedings of the 4th IFAC Workshop on Dependable Control of Discrete Systems, pp. 67-72, 2013.
- Naoki Hayashi and Shigemasa Takai: A GTS scheduling for consensus problems over IEEE 802.15.4 wireless networks; Proceedings of the 12th European Control Conference, pp. 1764-1769, 2013.
- Katsuyuki Kimura, Masashi Nomura, and Shigemasa Takai: Bisimilarity enforcing supervisory control of nondeterministic systems under event and state observations; Proceedings of the 11th International Workshop on Discrete Event Systems, pp. 169-174, 2012.
- Ratnesh Kumar and Shigemasa Takai: A framework for control-reconfiguration following fault-detection in discrete event systems; Proceedings of the 8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, pp. 848-853, 2012.
- Shigemasa Takai: Robust failure prognosis of partially observed discrete event systems; Proceedings of the 2012 American Control Conference, pp. 6077-6082, 2012.
- Masashi Nomura and Shigemasa Takai: A new forcing mechanism for decentralized supervisory control of timed discrete event systems; Proceedings of the 26th International Technical Conference on Circuits/Systems, Computers and Communications, pp. 11-14, 2011.
- Shigemasa Takai: Robust failure diagnosis of partially observed discrete event systems; Proceedings of the 10th International Workshop on Discrete Event Systems, pp. 205-210, 2010.
- Shigemasa Takai and Toshimitsu Ushio: Decentralized diagnosis of discrete event systems modeled by Mealy automata with nondeterministic output functions; Proceedings of the 2010 American Control Conference, pp. 2613-2618, 2010.
- Shigemasa Takai and Ratnesh Kumar: Distributed prognosis of discrete event systems under bounded-delay communications; Proceedings of the 48th IEEE Conference on Decision and Control, and the 28th Chinese Control Conference, pp. 1235-1240, 2009.
- Shigemasa Takai and Ratnesh Kumar: Verification and synthesis for secrecy in discrete-event systems; Proceedings of the 2009 American Control Conference, pp. 4741-4746, 2009.
- Toshimitsu Ushio and Shigemasa Takai: Supervisory control of discrete event systems modeled by Mealy automata with nondeterministic output functions; Proceedings of the 2009 American Control Conference, pp. 4260-4265, 2009.
- Shigemasa Takai and Ratnesh Kumar: Inference-based decentralized prognosis in discrete event systems; Proceedings of the 47th IEEE Conference on Decision and Control, pp. 871-876, 2008.
- Shigemasa Takai and Yusuke Oka: A Formula for the supremal controllable and opaque sublanguage in discrete event systems; Proceedings of the 2008 International Symposium on Nonlinear Theory and its Applications, pp. 656-659, 2008.
- Shigemasa Takai: A sufficient condition for diagnosability of large-scale discrete event systems; Proceedings of the 23rd International Technical Conference on Circuits/Systems, Computers and Communications, pp. 321-324, 2008.
- Ratnesh Kumar and Shigemasa Takai: Decentralized prognosis of failures in discrete event systems; Proceedings of the 9th International Workshop on Discrete Event Systems, pp. 376-381, 2008.
- Shigemasa Takai and Ratnesh Kumar: Inference-diagnosability: Nonconvergence and other complexity results; Proceedings of the SICE Annual Conference 2007, pp. 533-539, 2007.
- Shigemasa Takai and Ratnesh Kumar: Synthesis of over-approximating inference-based decentralized supervisors for discrete event systems; Proceedings of the 2007 American Control Conference, pp. 4268-4273, 2007.
- Shigemasa Takai and Ratnesh Kumar: Synthesis of inference-based decentralized control for discrete event systems; Proceedings of the 45th IEEE Conference on Decision and Control, pp. 410-415, 2006.
- Shigemasa Takai and Yongming Bai: Computation of controllable sublanguages for unbounded Petri nets using their approximation models; Proceedings of the 2006 International Symposium on Nonlinear Theory and its Applications, pp. 411-414, 2006.
- Shigemasa Takai and Ratnesh Kumar: Decentralized diagnosis for nonfailures of discrete event systems using inference-based ambiguity management; Proceedings of the 8th International Workshop on Discrete Event Systems, pp. 242-247, 2006.
- Ratnesh Kumar and Shigemasa Takai: Inference-based ambiguity management in decentralized decision-making: Decentralized diagnosis of discrete event systems; Proceedings of the 2006 American Control Conference, pp. 6069-6074, 2006.
- Ratnesh Kumar and Shigemasa Takai: Inference-based ambiguity management in decentralized decision-making: Decentralized control of discrete event systems; Proceedings of the 44th IEEE Conference on Decision and Control, and the European Control Conference ECC 2005, pp. 3480-3485, 2005.
- Shigemasa Takai and Toshimitsu Ushio: Computation of closed, controllable, and weakly observable sublanguages for timed discrete event systems; Proceedings of the 16th IFAC World Congress, pp. 139-144, 2005.
- Shigemasa Takai and Toshimitsu Ushio: A new class of supervisors for timed discrete event systems under partial observation; Proceedings of the 43rd IEEE Conference on Decision and Control, pp. 497-502, 2004.
- Ratnesh Kumar, Shigemasa Takai, Martin Fabian, and Toshimitsu Ushio: Maximally permissive mutually & globally nonblocking supervisors for discrete event systems; Proceedings of the 7th International Workshop on Discrete Event Systems, pp. 69-74, 2004.
- Shigemasa Takai: Maximizing robustness of supervisors for partially observed discrete event systems; Proceedings of the 10th IFAC/IFORS/IMACS/IFIP/ Symposium on Large Scale Systems: Theory and Applications, pp. 361-366, 2004.
- Shigemasa Takai and Toshimitsu Ushio: Supervisor synthesis for a class of concurrent discrete event systems; Proceedings of the 42nd IEEE Conference on Decision and Control, pp. 2686-2691, 2003.
- Shigemasa Takai and Toshimitsu Ushio: Reliable decentralized supervisory control of discrete event systems with the conjunctive and disjunctive fusion rules; Proceedings of the 2003 American Control Conference, pp. 1050-1055, 2003.
- Guisheng Zhai, Shigemasa Takai, Anthony N. Michel, and Xuping Xu: Improving closed-loop stability of second-order LTI systems by hybrid static output feedback; Proceedings of the 41st IEEE Conference on Decision and Control, pp. 2792-2797, 2002.
- Shigemasa Takai, Ratnesh Kumar, and Toshimitsu Ushio: Characterization and computation of classes of co-observable languages for decentralized control of discrete event systems; Proceedings of the 41st IEEE Conference on Decision and Control, pp. 578-583, 2002.
- Toshimitsu Ushio and Shigemasa Takai: State feedback control of hybrid automata with forcible events; Proceedings of the 6th International Workshop on Discrete Event Systems, pp. 317-322, 2002.
- Shigemasa Takai and Toshimitsu Ushio: Effective computation of an Lm(G)-closed, controllable, and observable sublanguage arising in supervisory control; Proceedings of the 6th International Workshop on Discrete Event Systems, pp. 34-39, 2002.
- Shigemasa Takai and Toshimitsu Ushio: Strong co-observability conditions for decentralized supervisory control of discrete event systems; Proceedings of the 40th IEEE Conference on Decision and Control, pp. 4098-4103, 2001.
- Guisheng Zhai, Xinkai Chen, Shigemasa Takai and Kazunori Yasuda: Controller failure time analysis for H_infinity control systems; Proceedings of the 40th IEEE Conference on Decision and Control, pp. 1029-1030, 2001.
- Shigemasa
Takai and Toshimitsu Ushio: Weak normality for
supervisory control of discrete event systems under partial observation;
Proceedings of the 6th European Control Conference, pp. 1589-1594, 2001.
- Guisheng Zhai, Shigemasa Takai, and Kazunori Yasuda: Stability analysis of linear time-invariant systems with controller failures; Proceedings of the 6th European Control Conference, pp. 138-142, 2001.
- Shigemasa Takai and Toshimitsu Ushio: Strong co-observability for decentralized supervisory control of discrete event systems; Proceedinghs of the 9th IFAC/IFORS/IMACS/IFIP/ Symposium on Large Scale Systems: Theory and Applications, pp. 127-132, 2001.
- Shigemasa Takai and Toshimitsu Ushio: A modified normality condition for decentralized supervisory control of discrete event systems; Proceedings of the 2001 American Control Conference, pp. 973-974, 2001.
- Shigemasa Takai and Toshimitsu Ushio: On-line decentralized supervisory control of discrete event systems; Proceedings of the 39th IEEE Conference on Decision and Control, pp. 7-8, 2000.
- Shigemasa Takai and Toshimitsu Ushio: Reliable decentralized supervisory control of discrete event systems with marked language specifications; Proceedings of the 2000 IEEE International Conference on Systems, Man, and Cybernetics, pp. 2180-2185, 2000.
- Shigemasa Takai, Toshimitsu Ushio, and Yasunobu Furukawa: Separability of predicates and languages in large-scale discrete event systems; Proceedings of the 5th International Workshop on Discrete Event Systems, pp. 337-344, 2000.
- Shigemasa Takai and Toshimitsu Ushio: Synthesis of reliable decentralized supervisors for discrete event systems; Proceedings of the 5th International Workshop on Discrete Event Systems, pp. 131-138, 2000.
- Shigemasa Takai and Toshimitsu Ushio: Reliable decentralized supervisory control of discrete event systems; Proceedings of the 38th IEEE Conference on Decision and Control, pp. 2224-2229, 1999.
- Shigemasa Takai: Design of robust supervisors for prefix-closed language specifications; Proceedings of the 38th IEEE Conference on Decision and Control, pp. 1725-1730, 1999.
- Shigemasa Takai: Robust control of partially observed discrete event systems in the input/output semantics; Proceedings of the 14th IFAC World Congress, pp. 4717-4722, 1999.
- Shigemasa Takai: Estimate based limited lookahead control of discrete event systems with model uncertainty; Proceedings of the 4th International Symposium on Artificial Life and Robotics, pp. 110-113, 1999.
- Shigemasa Takai: Maximally permissive robust supervisors for a class of specification languages; Proceedings of the 5th IFAC Conference on System Structure and Control, pp. 429-434, 1998.
- Shigemasa Takai: Optimal state space partition for state feedback control of discrete event systems; Proceedings of the 36th IEEE Conference on Decision and Control, pp. 3582-3583, 1997.
- Shigemasa Takai and Shinzo Kodama: A note on realizable sequences in supervisory control of timed event graphs; Proceedings of IFAC/IFIP Conference on Management and Control of Production and Logistics, pp. 155-160, 1997.
- Shigemasa Takai and Shinzo Kodama: On strongly controllable behavior in supervisory control of timed event graphs; Proceedings of the 4th European Control Conference, FR-M K2, 6 pages, 1997.
- Shigemasa Takai, Akiteru Takae, and Shinzo Kodama: The extremal languages in supervisory control of discrete event systems with service specifications; Proceedings of the 35th IEEE Conference on Decision and Control, pp. 2231-2236, 1996.
- Shigemasa Takai and Shinzo Kodama: Characterization of all M-controllable subpredicates arising in predicate based control; Proceedings of the 3rd International Workshop on Discrete Event Systems, pp. 127-132, 1996.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Decentralized supervisory control using partial event and state observations; Proceedings of the 34th IEEE Conference on Decision and Control, pp. 723-724, 1995.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: A new class of supervisors for partially observed discrete event systems; Proceedings of the 1995 American Control Conference, pp. 2631-2635, 1995.
- Akiteru Takae, Shigemasa Takai, Toshimitsu Ushio, Sadatoshi Kumagai, and Shinzo Kodama: Maximally permissive controllers for controlled time Petri nets; Proceedings of the 33rd IEEE Conference on Decision and Control, pp. 1058-1059, 1994.
- Youichi Nagao, Hideaki Ohta, Hironobu Urabe, Shinichi Nakano, Sadatoshi Kumagai, Toshimitsu Ushio, and Shigemasa Takai: Net-based cooperative control for autonomous distributed systems; Proceedings of the IEEE Symposium on Emerging Technologies & Factory Automation, pp. 350-357, 1994.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Modular state feedback control of discrete event systems under partial observation; Proceedings of the First Asian Control Conference, Vol. 2, pp. 893-896, 1994.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: A note on static state feedback control of discrete event systems under partial observation; Proceedings of the 32nd IEEE Conference on Decision and Control, pp. 1206-1211, 1993.
- Shigemasa Takai, Toshimitsu Ushio, and Shinzo Kodama: Stabilization and blocking in state feedback control of discrete event systems; Proceedings of the 12th IFAC World Congress, Vol. 7, pp. 583-586, 1993.