Kazuyuki Nakamura

Objective identification of aerosol transport regimes from long-term polarization micro-pulse lidar observations over coastal Antarctica

Kazue Suzuki, Kazuyuki Nakamura, Masanori Yabuki

Long-term polarization-sensitive micro-pulse lidar (PMPL) observations provide valuable information on aerosol transport over coastal Antarctica. Still, the interpretation of aerosolenhanced layers has largely relied on manual inspection of quick-look images. Here we propose an objective image-based framework for identifying aerosol transport regimes …

jp (code pays fourni par la source)

A hypofunctional PREX1 variant (p.Y191C) leads to neurodevelopmental abnormalities and epilepsy by attenuating RAC1 signaling

Masashi Nishikawa, Yuri Uchiyama, Kazuyuki Nakamura, Mitsuhiro Kato et autres

The RAC subfamily of Rho family small GTPases plays a crucial role in neurodevelopment by regulating cellular signaling pathways and the actin cytoskeleton. The activity of RAC is controlled by guanine nucleotide exchange factors (GEFs), which facilitate the transition from an inactive …

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SAR Disksat in Very Low Earth Orbit

Hirobumi Saito, Mitsuteru Kaneoka, Ryo Natsuaki, Kazuyuki Nakamura

us (code pays fourni par la source)

Anomaly detection in Polarized Micro-Pulse Lider observation data using f-AnoGAN

Kei Nakamitsu, Kazue Suzuki, Masanori Yabuki, Kazuyuki Nakamura

The 16th Symposium on Polar Science/Interdisciplinary sessions [ID] Polar data science, Fri. 5 Dec. / Atrium (1st floor), National Institute of Polar Research

Causal interaction of metabolic oscillations in monolayers of HeLa cervical cancer cells: emergence of complex networks

Takashi Amemiya, Susumu Shuto, Kenichi Shibata, Kazuyuki Nakamura et autres

A novel global cooperative phenomenon was observed in monolayers of HeLa cervical cancer cells that exhibited glycolytic oscillations but did not exhibit synchronisation or partial synchronisation. The analysis of causality of the oscillations between cell pairs in the cell-monolayer sheet revealed a …

jp (code pays fourni par la source)

Cell position-based evaluation of mechanical features of cells in multicellular systems

Hiroshi Koyama, Atsushi M Ito, Hisashi Okumura, Tetsuhisa Otani et autres

jp (code pays fourni par la source)

Surface Accuracy Measurement and Analysis of Fan-Fold Deployable Reflector

Tadashi Masuoka, Satoru Ozawa, Nobuaki Minami, Takahiro Kuhara et autres

Large, light onboard antenna reflectors are required for SAR applications and high-performance communications. One of the significant issues with a large deployable reflector is ensuring parabolic surface accuracy. This study investigated surface error and deformation mechanisms of Fan-fold deployable reflectors with apertures …

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The Application of Zig-Zag Sampler in Sequential Markov Chain Monte Carlo

Yu Han, Kazuyuki Nakamura

Particle filtering methods are widely utilized for state estimation in nonlinear non-Gaussian state space models. However, traditional particle filtering methods often suffer from weight degeneracy issues in high-dimensional situations. To overcome this challenge, various particle filtering methods have been developed to enhance …

jp (code pays fourni par la source)

Cell position-based evaluation of mechanical features of cells in multicellular systems

Hiroshi Koyama, Atsushi M Ito, Hisashi Okumura, Tetsuhisa Otani et autres

Abstract Measurement of mechanical forces of cell–cell interactions is important for studying the emergence of diverse three-dimensional morphologies of multicellular organisms. We previously reported an image-based statistical method for inferring effective pairwise forces of cell–cell interactions (i.e., attractive/repulsive forces), where a cell …

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Effective mechanical potential of cell–cell interaction in tissues harboring cavity and in cell sheet toward morphogenesis

Hiroshi Koyama, Hisashi Okumura, Tetsuhisa Otani, Atsushi M Ito et autres

Measuring mechanical forces of cell-cell interactions is important for studying morphogenesis in multicellular organisms. We previously reported an image-based statistical method for inferring effective mechanical potentials of pairwise cell-cell interactions by fitting cell tracking data with a theoretical model. However, whether this …

jp (code pays fourni par la source)

Aortic root landmark localization with optimal transport loss for heatmap regression

Tsuyoshi Ishizone, Masaki Miyasaka, Sae Ochi, Norio Tada et autres

Anatomical landmark localization is gaining attention to ease the burden on physicians. Focusing on aortic root landmark localization, the three hinge points of the aortic valve can reduce the burden by automatically determining the valve size required for transcatheter aortic valve implantation …

Deep learning-based flocculation sensor for automatic control of flocculant dose in sludge dewatering processes during wastewater treatment

Hiroshi Yokoyama, Takahiro Yamashita, Yoichiro Kojima, Kazuyuki Nakamura

jp (code pays fourni par la source)