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Current Affiliation Organization 【 display / non-display 】

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Affiliated academic organizations 【 display / non-display 】

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Research Interests 【 display / non-display 】

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Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Research Theme 【 display / non-display 】

Research Theme 【 display / non-display 】

• Atmospheric Electricity

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  We have analyzed the lightning flashes shownf in digital photographs. In order to evaluate the brightness of the lightning flashes in the digital photographs, we have studied the optical properties of some digital cameras. We have also studied particle dynamics in the thundercloud. Some other research themes are performing.

• Solid-state Physics(Computational Physics)

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  We have studied solid-state physics using the DV-Xa method, VASP code, and ESPRESSO code. So far, we studied superionic conductors, AgI, AgBr, AgCl, CuI, CuBr, and CuI, carbon tube, carbon sheet, and battery electrode such as LiCoO2.

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• Development of lightning-leader extraction algorithm for digital photographs applying quartile and deep learning

  Musashi Okizaki, Nobuaki Shimoji

  Journal of Atmospheric and Solar-Terrestrial Physics ( Elsevier )  242   106001   2023.01 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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    DOI

• Theoretical formulation and experimental validation of brightness evaluation using digital cameras

  Nobuaki Shimoji, Musashi Okizaki

  Results in Optics ( Elsevier )  2   100050   2021.01 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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    DOI Repository

• Color analysis based on the color indices of lightning channels obtained from a digital photograph

  Nobuaki Shimoji, Takahiro Nakano

  Results in Physics ( Elsevier )  15   102662   2019.12 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• A dynamics simulation of particles in a thundercloud model

  Nobuaki Shimoji, Yu Iida

  AIP Conference Proceedings ( AIP Publishing )  1906   030029   2017.11 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Color analysis of lightning leaders: Application of astronomical photometry

  Nobuaki Shimoji, Yamato Uehara

  AIP Conference Proceedings ( AIP Publishing )  1906   030030   2017.11 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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Other Papers 【 display / non-display 】

Other Papers 【 display / non-display 】

• Fabrication of an Integrator and Its Implementation in an Antenna System for Thundercloud Observation

  Itsuki Tofuku, Nobuaki Shimoji

  Meeting Abstract of Okinawa Branch of Meteorological Society of Japan in 2022 ( Okinawa Local Branch of Meteorological Society of Japan )    33 - 35   2023.03

   

• Development of UHF Antenna System foDevelopment of Uniform Light Source and a Study of Camera Optical Characteristicsr Discharge Observations

  Yuto Suzuki, Nobuaki Shimoji

  Meeting Abstract of Okinawa Branch of Meteorological Society of Japan in 2022 ( Okinawa Local Branch of Meteorological Society of Japan )    30 - 32   2023.03

   

• Development of an Algorithm for Extracting Lightning Leaders in Digital Photographs Using Quartile Filter and Machine Learning

  Musashi Okizaki, Nobuaki Shimoji

  preprints of the MSJ annual scientific meetings, Vol.122 ( Meteorological Society of Japan )  122   410 - 410   2022.10

   

• Recognition of Luminous Objects in Digital Photographs: A Lightning Study

  Musashi Okizaki, Nobuaki Shimoji

  preprints of the MSJ annual scientific meetings, Vol.120 ( Meteorological Society of Japan )  120   2021.12

   

• Development of UHF Antenna System for Discharge Observations

  Taiga Tajima, Nobuaki Shimoji

  Meeting Abstract of Okinawa Branch of Meteorological Society of Japan in 2021 ( Okinawa Local Branch of Meteorological Society of Japan )    8 - 10   2021.02

   

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