2005-2010

Journal Papers (Refereed)

1. Ryogo Kubo and Kouhei Ohnishi,
   "Attitude control of planar end-effector and estimation of contact point using parallel mechanism,"
   IEEJ Transactions on Industry Applications, Vol. 126-D, No. 9, pp. 1243-1250, September 2006. (in Japanese)
   Ryogo Kubo and Kouhei Ohnishi,
   "Attitude control of planar end-effector and estimation of contact point using parallel mechanism,"
   Electronics and Communications in Japan, Vol. 91, No. 3, pp. 28-36, March 2008. (reprint, English version)
2. Ryogo Kubo, Atsushi Kato, Toshiaki Tsuji and Kouhei Ohnishi,
   "A structure of bilateral control systems based on grasping/manipulating control scheme,"
   IEEJ Transactions on Industry Applications, Vol. 127-D, No. 6, pp. 563-570, June 2007. (in Japanese)
3. Tomoyuki Shimono, Ryogo Kubo, Kouhei Ohnishi, Seiichiro Katsura and Kiyoshi Ohishi,
   "Multilateral control with haptic transmission ratio,"
   IEEJ Transactions on Industry Applications, Vol. 127-D, No. 8, pp. 875-883, August 2007. (in Japanese)
4. Ryogo Kubo, Noriko Iiyama, Kenji Natori, Kouhei Ohnishi and Hirotaka Furukawa,
   "Performance analysis of a three-channel control architecture for bilateral teleoperation with time delay,"
   IEEJ Transactions on Industry Applications, Vol. 127-D, No. 12, pp. 1224-1230, December 2007.
5. Jun-ichi Kani, Ryogo Kubo, Mitsumasa Okada, Yukihiro Fujimoto and Kiyomi Kumozaki,
   "Adaptive optical network unit for point-to-point and point-to-multipoint Gigabit Ethernet-based optical access networks,"
   IEICE Electronics Express, Vol. 5, No. 10, pp. 361-365, May 2008.
6. Takayoshi Takei, Tomoyuki Shimono, Ryogo Kubo, Hiroaki Nishi and Kouhei Ohnishi,
   "Gravity compensation for improvement of operationality in bilateral teleoperation,"
   IEEJ Transactions on Industry Applications, Vol. 128-D, No. 6, pp. 767-774, June 2008. (in Japanese)
7. Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
   "Flexible controller design of bilateral grasping systems based on a multilateral control scheme,"
   IEEE Transactions on Industrial Electronics, Vol. 56, No. 1, pp. 62-68, January 2009.
8. Ryogo Kubo and Kouhei Ohnishi,
   "Method for bandwidth compression and transmission of environmental information in bilateral teleoperation,"
   IEEJ Transactions on Industry Applications, Vol. 129-D, No. 3, pp. 319-324, March 2009. (in Japanese)
   Ryogo Kubo and Kouhei Ohnishi,
   "Method for bandwidth compression and transmission of environmental information in bilateral teleoperation,"
   Electrical Engineering in Japan, Vol. 178, No. 2, pp. 47-54, January 2012. (reprint, English version)
9. Kenji Natori, Ryogo Kubo, Tomoyuki Shimono, Kouhei Ohnishi, Kanako Miura, Hirotaka Furukawa and Minoru Takahata,
   "Time-delay compensation by communication disturbance observers of different orders in bilateral teleoperation systems,"
   IEEJ Transactions on Industry Applications, Vol. 129-D, No. 4, pp. 353-362, April 2009. (in Japanese)
10. Ryogo Kubo and Kouhei Ohnishi,
    "Mechanical recognition of unknown environment using active/passive contact motion,"
    IEEE Transactions on Industrial Electronics, Vol. 56, No. 5, pp. 1364-1374, May 2009.
11. Ryogo Kubo, Jun-ichi Kani and Yukihiro Fujimoto,
    "Congestion control in TCP/AQM networks using a disturbance observer,"
    IEEJ Transactions on Industry Applications, Vol. 129-D, No. 6, pp. 541-547, June 2009. (in Japanese)
12. Jun-ichi Kani, Takashi Mitsui, Ryogo Kubo, Mitsumasa Okada, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Adaptive optical network unit for point-to-point and PON systems based on Gigabit Ethernet,"
    IEEE/OSA Journal of Lightwave Technology, Vol. 27, No. 22, pp. 5022-5028, November 2009.
13. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Adaptive power saving mechanism for 10 Gigabit class PON systems,"
    IEICE Transactions on Communications, Vol. E93-B, No. 2, pp. 280-288, February 2010.
14. Daisuke Yashiro, Ryogo Kubo, Takahiro Yakoh and Kouhei Ohnishi,
    "End-to-end flow control using PI controller for servo control over networks,"
    IEEJ Transactions on Industry Applications, Vol. 130-D, No. 3, pp. 268-276, March 2010. (in Japanese)
15. Katsutoshi Tsukamoto, Tatsuya Nishiumi, Takuya Yamagami, Takeshi Higashino, Shozo Komaki, Ryogo Kubo, Tomohiro Taniguchi, Jun-ichi Kani, Naoto Yoshimoto, Hideaki Kimura and Katsumi Iwatsuki,
    "Convergence of WDM access and ubiquitous antenna architecture for broadband wireless services,"
    PIERS Online, Vol. 6, No. 4, pp. 385-389, April 2010.
16. Ryogo Kubo, Jun-ichi Kani, Hirotaka Ujikawa, Takeshi Sakamoto, Naoto Yoshimoto and Hisaya Hadama,
    "Hybrid power-saving mechanism with cyclic sleep and adaptive link rate functions for 10G-EPON systems,"
    IET Electronics Letters, Vol. 46, No. 13, pp. 934-936, June 2010.
17. Ryogo Kubo, Jun-ichi Kani, Hirotaka Ujikawa, Takeshi Sakamoto, Yukihiro Fujimoto, Naoto Yoshimoto and Hisaya Hadama,
    "Study and demonstration of sleep and adaptive link rate control mechanisms for energy efficient 10G-EPON,"
    IEEE/OSA Journal of Optical Communications and Networking, Vol. 2, No. 9, pp. 716-729, September 2010.

Conference Talks (Refereed)

1. Ryogo Kubo and Kouhei Ohnishi,
   "An extraction method of environmental surface profile using planar end-effectors,"
   Proceedings of the 9th IEEE International Workshop on Advanced Motion Control, AMC 2006, pp. 368-373, 2006.
2. Ryogo Kubo and Kouhei Ohnishi,
   "Hybrid control for multiple robots in grasping and manipulation,"
   Proceedings of the 12th International Power Electronics and Motion Control Conference, EPE-PEMC 2006, pp. 367-372, 2006.
3. Shoyo Hyodo, Ryogo Kubo and Kouhei Ohnishi,
   "A stable grasping and manipulating control method based on grasp plane,"
   Proceedings of the 32nd Annual Conference of the IEEE Industrial Electronics Society, IECON 2006, pp. 4030-4035, 2006.
4. Ryogo Kubo and Kouhei Ohnishi,
   "Bilateral control for fine processing using virtual grasping/manipulating robots,"
   Proceedings of the 32nd Annual Conference of the IEEE Industrial Electronics Society, IECON 2006, pp. 5258-5263, 2006.
5. Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
   "A bilateral controller design method for master-slave robots with different DOF,"
   Proceedings of the IEEE International Conference on Industrial Technology, ICIT 2006, pp. 328-333, 2006.
6. Tomoyuki Shimono, Seiichiro Katsura, Ryogo Kubo and Kouhei Ohnishi,
   "Multilateral control for skill education based on haptic data storage,"
   Proceedings of the IEEE International Conference on Industrial Technology, ICIT 2006, pp. 334-339, 2006.
7. Noriko Iiyama, Kenji Natori, Ryogo Kubo, Kouhei Ohnishi, Hirotaka Furukawa, Kanako Miura and Minoru Takahata,
   "A bilateral controller design method using delay compensators,"
   Proceedings of the IEEE International Conference on Industrial Technology, ICIT 2006, pp. 836-841, 2006.
8. Kenji Natori, Ryogo Kubo and Kouhei Ohnishi,
   "Transparency of time delayed bilateral teleoperation systems with communication disturbance observer,"
   Proceedings of the 4th IEEE International Conference on Mechatronics, ICM 2007, WA1-A-3, pp. 1-6, 2007.
9. Nobuaki Fujii, Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
   "An approach to performance improvement for bilateral control based on 4ch-controller with acceleration feedback,"
   Proceedings of the 4th IEEE International Conference on Mechatronics, ICM 2007, WM1-A-1, pp. 1-6, 2007.
10. Tomoyuki Shimono, Seiichiro Katsura, Ryogo Kubo and Kouhei Ohnishi,
    "Multilateral motion control with transmission ratio based on haptic database,"
    Proceedings of the IEEE International Symposium on Industrial Electronics, ISIE 2007, pp. 3072-3077, 2007.
11. Kenji Natori, Ryogo Kubo and Kouhei Ohnishi,
    "Effects of controller parameters on transparency of time delayed bilateral teleoperation systems with communication disturbance observer,"
    Proceedings of the IEEE International Symposium on Industrial Electronics, ISIE 2008, pp. 1287-1292, 2008.
12. Jun-ichi Kani, Ryogo Kubo, Mitsumasa Okada, Yukihiro Fujimoto and Kiyomi Kumozaki,
    "Harmonization of point-to-point and passive optical network systems for reducing operational expenditure of optical access networks,"
    Proceedings of the 13th European Conference on Networks and Optical Communications/3rd Conference on Optical Cabling and Infrastructure, NOC/OC&I 2008, pp. 137-143, 2008.
13. Sho Sakaino, Tomoya Sato, Ryogo Kubo and Kouhei Ohnishi,
    "Real-time environmental mode extraction of contact points described in 3 dimensional location and direction using quaternion for bilateral control,"
    Proceedings of the 34th Annual Conference of the IEEE Industrial Electronics Society, IECON 2008, pp. 2574-2579, 2008.
14. Ryogo Kubo, Jun-ichi Kani and Yukihiro Fujimoto,
    "Advanced Internet congestion control using a disturbance observer,"
    Proceedings of the IEEE Global Communications Conference, GLOBECOM 2008, pp. 1-5, 2008.
15. Jun-ichi Kani, Takashi Mitsui, Ryogo Kubo, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Feasibility study of adaptive ONU for Gigabit optical access networks,"
    Proceedings of the Optical Fiber Communication Conference & Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2009, NThC3, pp. 1-3, 2009.
16. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Proposal and performance analysis of a power-saving mechanism for 10 Gigabit class passive optical network systems,"
    Proceedings of the 14th European Conference on Networks and Optical Communications/4th Conference on Optical Cabling and Infrastructure, NOC/OC&I 2009, pp. 87-94, 2009.
17. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Sleep and adaptive link rate control for power saving in 10G-EPON systems," Proceedings of the IEEE Global Communications Conference, GLOBECOM 2009, pp. 1-6, 2009.
18. Naoki Motoi, Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
    "Bilateral control with different inertia based on modal decomposition,"
    Proceedings of the 11th IEEE International Workshop on Advanced Motion Control, AMC 2010, pp. 697-702, 2010.
19. Ryogo Kubo, Naoki Motoi and Kouhei Ohnishi,
    "Transparency and system connection for heterogeneous haptic network systems,"
    Proceedings of the 11th IEEE International Workshop on Advanced Motion Control, AMC 2010, pp. 709-714, 2010.
20. Katsutoshi Tsukamoto, Tatsuya Nishiumi, Takuya Yamagami, Takeshi Higashino, Shozo Komaki, Ryogo Kubo, Tomohiro Taniguchi, Jun-ichi Kani, Naoto Yoshimoto, Hideaki Kimura and Katsumi Iwatsuki,
    "Convergence of WDM access and ubiquitous antenna architecture for broadband wireless services,"
    Proceedings of the 27th Progress In Electromagnetics Research Symposium, PIERS 2010, pp. 783-787, 2010.
21. Ryogo Kubo and Naoki Motoi,
    "An expression of transparency in time-delayed multilateral control systems,"
    Proceedings of the 8th edition of France-Japan and 6th Europe-Asia Congress on Mechatronics, MECATRONICS 2010, pp. 183-188, 2010.

Conference Talks (Non-refereed)

1. Ryogo Kubo and Kouhei Ohnishi,
   "An attitude control method of planar end-effector using parallel mechanism and estimation of contact point,"
   Proceedings of the 2005 Annual Conference of the IEEJ Industry Applications Society, Vol. 2, pp. 163-168, 2005. (in Japanese)
2. Ryogo Kubo, Atsushi Kato, Toshiaki Tsuji and Kouhei Ohnishi,
   "Bilateral control based on theory of grasping and manipulation,"
   Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-06-45, 2006. (in Japanese)
3. Tomoyuki Shimono, Ryogo Kubo, Kouhei Ohnishi, Seiichiro Katsura and Kiyoshi Ohishi,
   "A configuration of multilateral control system for haptic skill training,"
   Proceedings of the 2006 Annual Conference of the IEEJ Industry Applications Society, Vol. 2, pp. 467-472, 2006. (in Japanese)
4. Ryogo Kubo and Kouhei Ohnishi,
   "A data transmission method based on environmental information in bilateral teleoperation,"
   Proceedings of the 2006 Annual Conference of the IEEJ Industry Applications Society, Vol. 2, pp. 473-478, 2006. (in Japanese)
5. Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
   "Bilateral control taking unequally-spaced allocation of multiple end-effectors into account and spacelike transparency,"
   Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-07-54, 2007. (in Japanese)
6. Takayoshi Takei, Tomoyuki Shimono, Ryogo Kubo, Hiroaki Nishi and Kouhei Ohnishi,
   "Gravity compensation for improvement of operationality in bilateral teleoperation,"
   Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-07-68, 2007. (in Japanese)
7. Nobuaki Fujii, Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
   "An approach to performance improvement for bilateral control with time delay based on 4ch-controller with acceleration feedback,"
   Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-07-69, 2007. (in Japanese)
8. Ryogo Kubo, Noriko Iiyama, Kenji Natori and Kouhei Ohnishi,
   "Analysis of a three-channel control architecture for bilateral teleoperation with time delay,"
   Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-07-101, 2007.
9. Akira Yamaguchi, Noriko Iiyama, Ryogo Kubo, Kenji Natori and Kouhei Ohnishi,
   "Analysis of bilateral control system taking difference of varying time delay into account,"
   Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-07-103, 2007. (in Japanese)
10. Kenji Natori, Ryogo Kubo, Tomoyuki Shimono, Kouhei Ohnishi, Kanako Miura, Hirotaka Furukawa and Minoru Takahata,
    "Experimental validation of time delay compensation by different order communication disturbance observer in bilateral teleoperation system,"
    Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-08-52, 2008. (in Japanese)
11. Ryogo Kubo, Jun-ichi Kani and Yukihiro Fujimoto,
    "Congestion control for TCP/AQM networks using a disturbance observer,"
    Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-08-106, 2008. (in Japanese)
12. Ryogo Kubo, Jun-ichi Kani and Yukihiro Fujimoto,
    "Congestion control taking parameter variation of TCP/AQM networks into account,"
    Proceedings of the 2008 IEICE General Conference, Vol. 2, p. 11, 2008. (in Japanese)
13. Kenji Natori, Ryogo Kubo, Tomoyuki Shimono, Kouhei Ohnishi, Kanako Miura, Hirotaka Furukawa and Minoru Takahata,
    "Experimental validation of the effect of time-delay compensation by communication disturbance observer on bilateral control system under time-varying delay,"
    Proceedings of the 2008 Annual Conference of the IEEJ Industry Applications Society, Vol. 2, pp. 453-458, 2008. (in Japanese)
14. Ryogo Kubo, Jun-ichi Kani and Yukihiro Fujimoto,
    "Proposal of energy efficient 10G-PON using multirate ONUs,"
    Proceedings of the 2008 IEICE Society Conference, Vol. 2, p. 135, 2008. (in Japanese)
15. Jun-ichi Kani, Ryogo Kubo, Mitsumasa Okada, Yukihiro Fujimoto and Kiyomi Kumozaki,
    "Adaptive ONUs for point-to-point and passive optical network systems,"
    Proceedings of the 2008 IEICE Society Conference, Vol. 2, p. 136, 2008. (in Japanese)
16. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto and Naoto Yoshimoto,
    "Performance analysis of energy efficient 10G-PON with adaptive link-rate function,"
    IEICE Technical Report, Communication Systems, Vol. 108, No. 279, CS2008-34, pp. 53-58, 2008. (in Japanese)
17. Kenji Natori, Ryogo Kubo, Kouhei Ohnishi and Yutaka Uchimura,
    "A discussion on effect of time-varying delay in control systems,"
    Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-09-45, 2009. (in Japanese)
18. Naoki Motoi, Ryogo Kubo and Kouhei Ohnishi,
    "A control method for multiple end-effectors based on mode control extraction,"
    Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-09-56, 2009. (in Japanese)
19. Ryogo Kubo, Kenji Natori and Kouhei Ohnishi,
    "Network-centric bilateral control architecture for ubiquitous haptic communications,"
    Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-09-57, 2009.
20. Takashi Mitsui, Jun-ichi Kani, Ryogo Kubo, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Principle and demonstration of adaptive ONUs for preventing ONU mis-connection,"
    Proceedings of the 2009 IEICE General Conference, Vol. 2, p. 288, 2009. (in Japanese)
21. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Dynamic control mechanism of sleep time for 10G-EPON system with power saving function,"
    Proceedings of the 2009 IEICE General Conference, Vol. 2, p. 290, 2009. (in Japanese)
22. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto, Naoto Yoshimoto and Kiyomi Kumozaki,
    "Performance analysis of 10 Gigabit class PON systems with power-saving function,"
    IEICE Technical Report, Communication Systems, Vol. 109, No. 4, CS2009-2, pp. 7-12, 2009. (in Japanese)
23. Naoki Motoi, Ryogo Kubo and Kouhei Ohnishi,
    "Grasping and moving control for unknown shape object by using mode compliance,"
    Proceedings of the 2009 Annual Conference of the IEEJ Industry Applications Society, Vol. 2, pp. 459-464, 2009. (in Japanese)
24. Ryogo Kubo, Naoki Motoi and Kouhei Ohnishi,
    "Environmental information extraction and adaptive mode selection in bilateral control with communication constraint,"
    Proceedings of the 2009 Annual Conference of the IEEJ Industry Applications Society, Vol. 2, pp. 491-496, 2009. (in Japanese)
25. Ryogo Kubo, Jun-ichi Kani, Yukihiro Fujimoto and Naoto Yoshimoto,
    "Performance evaluation of energy-efficient 10G-EPON systems using sleep and adaptive link rate functions,"
    Proceedings of the 2009 IEICE Society Conference, Vol. 2, p. 147, 2009. (in Japanese)
26. Noriyuki Oota, Akihiro Otaka, Ryogo Kubo, Jun-ichi Kani, Fumihiko Yamamoto and Tetsuya Yamamura,
    "A power saving method with shared buffer for access network systems,"
    Proceedings of the 2009 IEICE Society Conference, Vol. 2, p. 150, 2009. (in Japanese)
27. Naoki Motoi, Ryogo Kubo, Tomoyuki Shimono and Kouhei Ohnishi,
    "A control method for micro-macro bilateral robots,"
    Papers of the IEEJ Technical Meeting on Industrial Instrumentation and Control, IIC-10-23, 2010. (in Japanese)
28. Satoshi Shimazu, Jun-ichi Kani, Ryogo Kubo, Masashi Tadokoro, Naoto Yoshimoto and Hisaya Hadama,
    "Proposal and performance evaluation of PON-OLT energy efficient method using DBA information,"
    Proceedings of the 2010 IEICE General Conference, Vol. 2, p. 294, 2010. (in Japanese)
29. Ryogo Kubo, Hirotaka Ujikawa, Jun-ichi Kani, Takeshi Sakamoto, Naoto Yoshimoto and Hisaya Hadama,
    "Study on energy efficient 10G-EPON systems (1) - proposal and verification of a variable sleep time control method -,"
    Proceedings of the 2010 IEICE General Conference, Vol. 2, p. 295, 2010. (in Japanese)
30. Hirotaka Ujikawa, Ryogo Kubo, Jun-ichi Kani, Takeshi Sakamoto, Naoto Yoshimoto and Hisaya Hadama,
    "Study on energy efficient 10G-EPON systems (2) - proposal and verification of an adaptive link rate control method -,"
    Proceedings of the 2010 IEICE General Conference, Vol. 2, p. 296, 2010. (in Japanese)
31. Takeshi Sakamoto, Jun-ichi Kani, Ryogo Kubo, Hirotaka Ujikawa, Ken-Ichi Suzuki and Naoto Yoshimoto,
    "A considaration of control interface for energy-efficient 10G-EPON syetem,"
    IEICE Technical Report, Communication Systems, Vol. 110, No. 20, CS2010-2, pp. 7-12, 2010. (in Japanese)

Patents

1. Flexible actuator, JP 4838576.
2. Communication control method, JP 4917501.
3. Optical network unit, optical subscriber line terminal device and communication control method, JP 4917514.
4. Communication monitoring device and monitor terminal, JP 4950089.
5. Queue management method and transfer control device, JP 4809854.
6. Optical subscriber line terminating device and optical network terminating device, JP 4783398.
7. Optical network terminating device and optical subscriber line terminating device, JP 4783400.
8. Optical network unit, JP 4727751.
9. Optical network unit, US 8340520.
10. Optical network unit, CN 101843047.
11. Optical network unit, EP 2207310.
12. Power saving method using shared buffer in communication network and communication node, JP 5102263.
13. Power saving method in communication network and communication node, JP 5048733.
14. OSU, OLT, optical access system, and link power saving control method, JP 5318739.
15. Optical line terminal and optical network unit, JP 5238877.
16. Optical subscriber line terminal and optical network unit, JP 5437469
17. Optical line terminal and method of controlling a sleep state, EP 2403191.
18. Optical line terminal and optical network unit, US 8929737.
19. Optical line terminal and optical network, EP 2685745.
20. Optical subscriber line termination device and an optical network termination device, CN 102318281.
21. Optical line terminal and optical network unit, US 9596046.
22. Optical line terminal and optical network unit, US 9680595.
23. Optical network termination apparatus, an optical device and an optical subscriber line network terminal, CN 104243178.
24. Optical radio access system and method, JP 5331968.
25. Distributed RoF-MIMO antenna system and cell forming method, JP 5435574.
26. Power consumption amount monitoring device and power consumption amount monitoring method, JP 2011-244106.

Press and Interviews

1. Manabu Kubota, Ken-Ichi Suzuki and Ryogo Kubo,
   "Efforts toward power saving of optical network unit achieved miniaturization of ONU and sleep functions,"
   Business Communication, Vol. 47, No. 1, pp. 26-27, January 2010. (in Japanese)
2. Ryogo Kubo,
   "Reducing power consumption in network systems is a major issue from the viewpoint of preventing global warming and reducing operational expenditure,"
   IET Electronics Letters, Vol. 46, No. 13, p. 874, June 2010.

Miscellaneous

1. Satoko Saito, Ryogo Kubo, Takahiro Jibiki, Wataru Fujii, Kiyokazu Tada, Tetsuhiro Nakamura and Hiroshi Ueda,
   "Present status of deregulation in the Japanese power industry,"
   Journal of the IEEJ, Vol. 125, No. 11, pp. 716-719, November 2005. (in Japanese)
2. Ryogo Kubo, Kousuke Egami, Kouta Shinoda and Seiichi Ishizu,
   "Acoustic control for comfortable acoustic space,"
   Journal of the IEEJ, Vol. 126, No. 5, pp. 296-299, May 2006. (in Japanese)
3. Kousuke Egami, Ryogo Kubo, Kouta Shinoda and Seiichi Ishizu,
   "Vehicle dynamic simulator,"
   Journal of the IEEJ, Vol. 126, No. 7, pp. 447-450, July 2006. (in Japanese)
4. Yuki Kato, Kensuke Taira, Mariko Ichikawa, Ryogo Kubo, Takahiro Jibiki, Kousuke Egami and Katsurou Maki,
   "Talk with an astronaut about the future of space development,"
   Journal of the IEEJ, Vol. 126, No. 9, pp. 618-621, September 2006. (in Japanese)
5. Shinichiro Nakahira, Toshiaki Sakurai, Ryogo Kubo and Atsuo Mutoh,
   "The projection technology of the planetarium,"
   Journal of the IEEJ, Vol. 126, No. 12, pp. 810-813, December 2006. (in Japanese)
6. Ryogo Kubo, Satoko Saito and Hiromi Ogi,
   "Human friendly broadcasting technology,"
   Journal of the IEEJ, Vol. 127, No. 1, pp. 36-39, January 2007. (in Japanese)
7. Toshiaki Sakurai, Ryogo Kubo, Masami Watanabe and Hiromi Ogi,
   "Recycle technology for recycling-based society and awareness of consumers,"
   Journal of the IEEJ, Vol. 127, No. 4, pp. 205-208, April 2007. (in Japanese)
   Toshiaki Sakurai, Ryogo Kubo, Masami Watanabe and Hiromi Ogi,
   "Recycling technology for a recycling society and the consumer's expected consciousness: recycling from the viewpoint of four items of home appliances,"
   IEEJ Transactions on Electrical and Electronic Engineering, Vol. 3, No. 1, pp. 1-4, January 2008. (reprint, English version)