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  1. Article

    Open Access

    A study on the implementation of nonlinear Kalman filter applying MMG model

    Many technologies need to be established to realize autonomous ships. In particular, accurate state estimation in real time is one of the most important technologies. In the ship and ocean engineering fields, ...

    Hiroaki Koike, Leo Dostal, Ryohei Sawada… in Journal of Marine Science and Technology (2023)

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  2. No Access

    Chapter and Conference Paper

    Facial Mask Region Completion Using StyleGAN2 with a Substitute Face of the Same Person

    In recent years, there has been a worldwide outbreak of coronaviruses, and people are wearing facial masks more and more often. In many cases, people wear masks even when taking photos of themselves, and when ...

    Hiroaki Koike, Norihiko Kawai in Frontiers of Computer Vision (2022)

  3. No Access

    Chapter and Conference Paper

    Effects of Chronic Taurine Administration on Gene Expression, Protein Translation and Phosphorylation in the Rat Hippocampus

    Taurine is one of the most abundant amino acids in the brain. It plays various important physiological functions as a neuromodulator and antioxidant. Taurine is suspected to be involved in depression as famili...

    Atsushi Toyoda, Hiroaki Koike, Kouichiro Nishihata, Wataru Iio, Tatsuhiko Goto in Taurine 9 (2015)

  4. No Access

    Article

    Lung ventilation–perfusion imbalance in pulmonary emphysema: assessment with automated V/Q quotient SPECT

    Tc-99m-Technegas–MAA single photon emission computed tomography (SPECT)-derived ventilation (V)/perfusion (Q) quotient SPECT was used to assess lung V–Q imbalance in patients with pulmonary emphysema.

    Kazuyoshi Suga, Yasuhiko Kawakami, Hiroaki Koike… in Annals of Nuclear Medicine (2010)