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All Technical Committee Conferences (Searched in: Recent 10 Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EA, SIP, SP, IPSJ-SLP [detail] | 2025-03-02 11:40 |
Okinawa | (Okinawa) | Toward nonlinear system identification Fumihiko Ishiyama (NTT) |
(To be available after the conference date) [more] | |
| NLP, CAS | 2024-10-18 14:30 |
Tottori | Information Center, Tottori University (Tottori) | Decomposition of nonlinear systems Fumihiko Ishiyama (NTT)  CAS2024-56 NLP2024-86 |
We discuss a unique decomposition for nonlinear systems. [more] | CAS2024-56 NLP2024-86 pp.146-149 |
| EA, ASJ-H | 2024-08-02 14:30 |
Miyagi | (Miyagi) | Spectrogram analysis w/o STFT Fumihiko Ishiyama (NTT) EA2024-42 |
There is a way to plot spectrogram w/o STFT. [more] | EA2024-42 pp.71-74 |
| ITE-ME, ITE-IST, BioX, SIP, MI, IE [detail] | 2024-06-06 14:35 |
Niigata | Nigata University (Ekinan-Campus "TOKIMATE") (Niigata) | Out of date numerical algorithms such as DFT Fumihiko Ishiyama (NTT) SIP2024-4 BioX2024-4 IE2024-4 MI2024-4 |
We discuss on the out of date numerical algorithms such as DFT. [more] | SIP2024-4 BioX2024-4 IE2024-4 MI2024-4 pp.19-22 |
| NLP | 2024-05-10 09:30 |
Kagawa | Kagawa Prefecture Social Welfare Center (Kagawa) | Spectrogram of electromagnetic pulse from lightning cloud Fumihiko Ishiyama, Atsushi Nagao, Toshihisa Masuda, Masato Maruyama (NTT) NLP2024-9 |
We report time-frequency characteristics of electromagnetic pulse from lightning cloud. [more] | NLP2024-9 pp.43-48 |
| SIP, IT, RCS | 2024-01-19 15:30 |
Miyagi | (Miyagi, Online) (Primary: On-site, Secondary: Online) |
Analysis of electromagnetic pulse from lightning cloud Fumihiko Ishiyama, Atsushi Nagao, Toshihisa Masuda, Masato Maruyama (NTT) IT2023-73 SIP2023-106 RCS2023-248 |
We report an observed time-frequency characteristics of a pre-lightning strike electromagnetic pulse series. [more] | IT2023-73 SIP2023-106 RCS2023-248 pp.235-238 |
| NLP | 2023-11-29 13:50 |
Okinawa | Nago city commerce and industry association (Okinawa) | Drawbacks of historical numerical algorithms Fumihiko Ishiyama (NTT) NLP2023-76 |
It is improper to use ancient numerical algorithms. [more] | NLP2023-76 pp.70-73 |
| MW, EMCJ, EST, IEE-EMC [detail] | 2023-10-20 09:00 |
Yamagata | Yamagata University (Yamagata, Online) (Primary: On-site, Secondary: Online) |
Lightning observation using a drone Fumihiko Ishiyama, Atsushi Nagao, Toshihisa Masuda, Masato Maruyama (NTT) EMCJ2023-48 MW2023-102 EST2023-75 |
We report an observed time-frequency characteristics of a recorded pre-lightning strike electromagnetic waveform. [more] | EMCJ2023-48 MW2023-102 EST2023-75 pp.68-71 |
| EE, WPT (Joint) |
2023-10-05 11:30 |
Osaka | (Osaka, Online) (Primary: On-site, Secondary: Online) |
Leakage of electromagnetic noise caused by deteriorated capacitors Fumihiko Ishiyama (NTT) EE2023-18 |
We are investigating countermeasure technique against electro-magnetic noise by investigating our own method. We applied... [more] | EE2023-18 pp.7-10 |
| COMP, IPSJ-AL | 2023-09-07 09:30 |
Osaka | Osaka Metropolitan Univ. (Osaka, Online) (Primary: On-site, Secondary: Online) |
Ancient numerical algorithms in numerical libraries Fumihiko Ishiyama (NTT) COMP2023-8 |
It is improper to use ancient numerical algorithms. [more] | COMP2023-8 pp.2-5 |
| SIP | 2023-08-08 11:00 |
Osaka | Osaka Univ. (Suita) Convention Center (Osaka, Online) (Primary: On-site, Secondary: Online) |
Unique solution for nonlinear series expansion and its implementation Fumihiko Ishiyama (NTT) SIP2023-55 |
We discuss on a unique series expansion for nonlinear systems, and its numerical implementation. [more] | SIP2023-55 pp.39-42 |
| SS, KBSE, IPSJ-SE [detail] | 2023-07-21 15:15 |
Hokkaido | (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Currentization of legacy algorithms Fumihiko Ishiyama (NTT) SS2023-11 KBSE2023-22 |
Discuss on the needs of currentization of legacy algorithms. [more] | SS2023-11 KBSE2023-22 pp.61-64 |
| EMCJ, IEE-EMC, IEE-SPC | 2023-05-12 16:30 |
Okinawa | (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Intensity of electromagnetic noise of a deteriorated power unit Fumihiko Ishiyama (NTT) EMCJ2023-9 |
We are investigating countermeasure technique against electro-magnetic noise with our own method. We evaluated the inten... [more] | EMCJ2023-9 pp.17-20 |
| NLP, MSS | 2023-03-16 11:20 |
Nagasaki | (Nagasaki, Online) (Primary: On-site, Secondary: Online) |
Ill-posed problem of Daubechies's AM-FM oscillator expansion Fumihiko Ishiyama (NTT) MSS2022-84 NLP2022-129 |
We discuss the ill-posed problem of Daubechies's AM-FM oscillator expansion. [more] | MSS2022-84 NLP2022-129 pp.110-113 |
| EMCJ | 2023-01-27 15:30 |
Okayama | WASHU BLUE RESORT (Okayama, Online) (Primary: On-site, Secondary: Online) |
Nonlinear analysis of lightning strike current waveforms Fumihiko Ishiyama (NTT) EMCJ2022-88 |
We figured out nonlinear nature of lightning strike current waveforms with our method of nonlinear time-frequency analy... [more] | EMCJ2022-88 pp.89-92 |
| CAS, NLP | 2022-10-20 15:20 |
Niigata | (Niigata, Online) (Primary: On-site, Secondary: Online) |
Nonlinear decay process of lightning strike current waveforms Fumihiko Ishiyama (NTT) CAS2022-24 NLP2022-44 |
Linear systems have eigenvalues, which are constants. In contrast, nonlinear systems do not have such values. We propose... [more] | CAS2022-24 NLP2022-44 pp.25-28 |
| EMCJ, MW, EST, IEE-EMC [detail] | 2022-10-14 09:00 |
Akita | Akita University (Akita, Online) (Primary: On-site, Secondary: Online) |
Electromagnetic noise of coupled switching power supplies through power line Fumihiko Ishiyama (NTT) EMCJ2022-51 MW2022-97 EST2022-61 |
We are investigating countermeasure technique against electro-magnetic noise. We applied our method to the analysis of ... [more] | EMCJ2022-51 MW2022-97 EST2022-61 pp.83-86 |
| SIP | 2022-08-26 09:00 |
Okinawa | Nobumoto Ohama Memorial Hall (Ishigaki Island) (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Nonlinear trends of nonlinear systems Fumihiko Ishiyama (NTT) SIP2022-60 |
Linear systems have eigenvalues, which are constants. In contrast, nonlinear systems do not have such values. We propose... [more] | SIP2022-60 pp.56-59 |
| EE, IEE-SPC | 2022-07-14 14:20 |
Aichi | WINC AICHI (Aichi, Online) (Primary: On-site, Secondary: Online) |
Nonlinear analysis of nonlinearly coupled circuits through power line Fumihiko Ishiyama (NTT) EE2022-9 |
We are investigating countermeasure technique against electro-magnetic noise. We applied our method to the analysis of e... [more] | EE2022-9 pp.7-10 |
| SIP, BioX, IE, MI, ITE-IST, ITE-ME [detail] | 2022-05-19 09:00 |
Kumamoto | Kumamoto University Kurokami Campus (Kumamoto, Online) (Primary: On-site, Secondary: Online) |
Noise analysis of nonlinearly coupled circuits through power line Fumihiko Ishiyama (NTT) SIP2022-1 BioX2022-1 IE2022-1 MI2022-1 |
We are investigating countermeasure technique against electro-magnetic noise. We applied our method to the analysis of e... [more] | SIP2022-1 BioX2022-1 IE2022-1 MI2022-1 pp.1-6 |
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