Zobrazeno 1 - 10
of 252
pro vyhledávání: '"Yoshikawa Akimasa"'
Autor:
Muhammad Asraf H., Nur Dalila K.A., Nooritawati Md Tahir, Zatul Iffah Abd Latiff, Mohamad Huzaimy Jusoh, Yoshikawa Akimasa
Publikováno v:
Alexandria Engineering Journal, Vol 61, Iss 1, Pp 937-947 (2022)
Data imputation studies include reconstruction or estimation of imperfect data gaps caused by system sensing failure, and non-responsive data transmission remains an open issue. In space weather applications, imputation of ground electromagnetism is
Externí odkaz:
https://doaj.org/article/3481f95bf7834fbe8038d1824f63f605
Autor:
Higuchi, Hayato, Pedersen, Juan W., Toyoizumi, Kiichiro, Yoshikawa, Kohji, Kiumi, Chusei, Yoshikawa, Akimasa
The Vlasov-Maxwell equations provide kinetic simulations of collisionless plasmas, but numerically solving them on classical computers is often impractical. This is due to the computational resource constraints imposed by the time evolution in the 6-
Externí odkaz:
http://arxiv.org/abs/2408.11550
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 48 (2021)
A test particle simulation code was developed to simulate the inner proton belt response during the intense geomagnetic storm of 15 May 2005. The guiding center model was implemented to compute the proton trajectories with an energy range of 70–180
Externí odkaz:
https://doaj.org/article/c1634630456044c691de7046d9ac3429
A novel quantum algorithm for solving the Boltzmann-Maxwell equations of the 6D collisionless plasma is proposed. The equation describes the kinetic behavior of plasma particles in electromagnetic fields and is known for the classical first-principle
Externí odkaz:
http://arxiv.org/abs/2306.05967
Publikováno v:
E3S Web of Conferences, Vol 127, p 02025 (2019)
The analysis of 20-year long-term semidiurnal lunar tidal variations gave the evidence that the semidiurnal variations are completely different between the magnetic quiet and disturbed periods. This is the first time that the seasonal dependence of d
Externí odkaz:
https://doaj.org/article/0e3bf1da463e47eaaf186db9b0a2dd84
Publikováno v:
E3S Web of Conferences, Vol 62, p 01007 (2018)
Intense X-ray fluxes during solar flares are known to cause enhanced ionization in the Earth’s ionospheric D, E and F region. This sudden change of ionospheric electron density profile is serious problem to radio wave communication and navigation s
Externí odkaz:
https://doaj.org/article/f08d9f1717844694ad3622210fc8efab
Publikováno v:
E3S Web of Conferences, Vol 62, p 01012 (2018)
We examined the Schumann resonance (SR) at low-latitude station KUJ by comparing with solar X-ray flux and solar proton flux at a geostationary orbit. For intense solar activity in October-November 2003, the reaction of the SR frequency to X-ray enha
Externí odkaz:
https://doaj.org/article/56cd721a3d28445885a06e55f42b7f16
Publikováno v:
E3S Web of Conferences, Vol 20, p 01013 (2017)
For study of coupling processes in the Solar-Terrestrial System, International Center for Space Weather Science and Education (ICSWSE), Kyushu University has developed a real time magnetic data acquisition system (the MAGDAS project) around the world
Externí odkaz:
https://doaj.org/article/26ea2ca7a4f944f9a77d01de2bb981d5
Autor:
Ikeda Akihiro, Uozumi Teiji, Yoshikawa Akimasa, Fujimoto Akiko, Abe Shuji, Nozawa Hiromasa, Shinohara Manabu
Publikováno v:
E3S Web of Conferences, Vol 20, p 01004 (2017)
The ground magnetic field variation in the extremely low frequency (ELF) range has been measured by an induction magnetometer at Kuju, Japan (KUJ; M.Lat. = 23.4 degrees, M. Lon. = 201.0 degrees) since 2003. The first mode of the Schumann resonance (S
Externí odkaz:
https://doaj.org/article/03f2581c995c49f786d84da86fd5d687
Autor:
Arslan Tariq, M., Liu, Libo, Shah, Munawar, Yang, Yuyan, Sun, Wenjie, Ali Shah, M., Zhang, Ruilong, Yoshikawa, Akimasa
Publikováno v:
In Advances in Space Research 15 March 2024 73(6):3033-3049