Search Results - "Takahashi, Hiroyuki"

FORMATION OF OVERHEATED REGIONS AND TRUNCATED DISKS AROUND BLACK HOLES: THREE-DIMENSIONAL GENERAL RELATIVISTIC RADIATION-MAGNETOHYDRODYNAMICS SIMULATIONS by Takahashi, Hiroyuki R., Ohsuga, Ken, Kawashima, Tomohisa, Sekiguchi, Yuichiro

“…ABSTRACT Using three-dimensional general relativistic radiation-magnetohydrodynamics simulations of accretion flows around stellar mass black holes, we report…”
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Rapid growth of black holes accompanied with hot or warm outflows exposed to anisotropic super-Eddington radiation by Takeo, Eishun, Inayoshi, Kohei, Ohsuga, Ken, Takahashi, Hiroyuki R, Mineshige, Shin

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A Mobile App Engagement Comprehensive Model of Matching to Purchase History Data: Empirical Research Using Customer Data from a Food Company by Takahashi, Hiroyuki

“…Mobile app engagement is receiving increasing attention in both practice and academic research. The aim of this study was to examine structural relationships…”
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RAIKOU (来光): A General Relativistic, Multiwavelength Radiative Transfer Code by Kawashima, Tomohisa, Ohsuga, Ken, Takahashi, Hiroyuki R.

“…We present a general relativistic radiative transfer code RAIKOU (来光) for multiwavlength studies of spectra and images including the black hole shadows around…”
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A Numerical Scheme for General Relativistic Radiation Magnetohydrodynamics Based on Solving a Grid-based Boltzmann Equation by Asahina, Yuta, Takahashi, Hiroyuki R., Ohsuga, Ken

“…We develop a general relativistic radiation magnetohydrodynamics (GR-RMHD) code inazuma in which the time-dependent radiation transfer equation…”
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Component of Energy Flow from Supercritical Accretion Disks Around Rotating Stellar Mass Black Holes by Utsumi, Aoto, Ohsuga, Ken, Takahashi, Hiroyuki R., Asahina, Yuta

“…By performing two-dimensional axisymmetric general relativistic radiation magnetohydrodynamics simulations with spin parameter a * varying from −0.9 to 0.9, we…”
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Supercritical Accretion onto a Non-magnetized Neutron Star: Why is it Feasible? by Takahashi, Hiroyuki R., Mineshige, Shin, Ohsuga, Ken

“…To understand why supercritical accretion is feasible onto a neutron star (NS), we carefully examine the accretion flow dynamics by 2.5-dimensional general…”
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Modeling of Thermal Emission from ULX Pulsar Swift J0243.6+6124 with General Relativistic Radiation MHD Simulations by Inoue, Akihiro, Ohsuga, Ken, Takahashi, Hiroyuki R., Asahina, Yuta

“…We perform general relativistic radiation magnetohydrodynamics simulations of super-Eddington accretion flows around a neutron star with a dipole magnetic…”
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Terahertz wireless communications based on photonics technologies by Nagatsuma, Tadao, Horiguchi, Shogo, Minamikata, Yusuke, Yoshimizu, Yasuyuki, Hisatake, Shintaro, Kuwano, Shigeru, Yoshimoto, Naoto, Terada, Jun, Takahashi, Hiroyuki

“…There has been an increasing interest in the application of terahertz (THz) waves to broadband wireless communications. In particular, use of frequencies above…”
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A NUMERICAL SCHEME FOR SPECIAL RELATIVISTIC RADIATION MAGNETOHYDRODYNAMICS BASED ON SOLVING THE TIME-DEPENDENT RADIATIVE TRANSFER EQUATION by Ohsuga, Ken, Takahashi, Hiroyuki R.

“…ABSTRACT We develop a numerical scheme for solving the equations of fully special relativistic, radiation magnetohydrodynamics (MHDs), in which the…”
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Relativistic resistive magneto-hydrodynamics code for high-energy heavy-ion collisions by Nakamura, Kouki, Miyoshi, Takahiro, Nonaka, Chiho, Takahashi, Hiroyuki R.

“…We construct a relativistic resistive magneto-hydrodynamic (RRMHD) numerical simulation code for high-energy heavy-ion collisions as a first designed code in…”
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Super-Eddington growth of black holes in the early universe: effects of disc radiation spectra by Takeo, Eishun, Inayoshi, Kohei, Ohsuga, Ken, Takahashi, Hiroyuki R, Mineshige, Shin

“…We investigate the properties of accretion flows on to a black hole (BH) with a mass of MBH embedded in an initially uniform gas cloud with a density of n∞ in…”
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A NUMERICAL TREATMENT OF ANISOTROPIC RADIATION FIELDS COUPLED WITH RELATIVISTIC RESISTIVE MAGNETOFLUIDS by Takahashi, Hiroyuki R, OHSUGA, KEN

“…We develop a numerical scheme for solving fully special relativistic, resistive radiation magnetohydrodynamics. Our code guarantees conservation of total mass,…”
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The vascular endothelial growth factor (VEGF)/VEGF receptor system and its role under physiological and pathological conditions by Takahashi, Hiroyuki, Shibuya, Masabumi

“…The VEGF (vascular endothelial growth factor) family and its receptors are essential regulators of angiogenesis and vascular permeability. Currently, the VEGF…”
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Acoustic emission analysis during fatigue crack propagation by Bayesian statistical modeling by Shiraiwa, Takayuki, Takahashi, Hiroyuki, Enoki, Manabu

“…Acoustic emission (AE) during fatigue crack growth of pure iron, three carbon steels and two Mg–Y–Zn alloys were measured and analyzed using Bayesian…”
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Radiation MHD Simulations of Soft X-Ray Emitting Regions in Changing Look AGN by Igarashi, Taichi, Takahashi, Hiroyuki R., Kawashima, Tomohisa, Ohsuga, Ken, Matsumoto, Yosuke, Matsumoto, Ryoji

“…Strong soft X-ray emission called soft X-ray excess is often observed in luminous active galactic nuclei (AGN). It has been suggested that the soft X-rays are…”
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OCT-Based Diagnostic Criteria for Different Stages of Myopic Maculopathy by Fang, Yuxin, Du, Ran, Nagaoka, Natsuko, Yokoi, Tae, Shinohara, Kosei, Xu, Xian, Takahashi, Hiroyuki, Onishi, Yuka, Yoshida, Takeshi, Ohno-Matsui, Kyoko

“…To analyze the choroidal thickness (CT) of each type of myopic maculopathy, and to establish an OCT-based classification of myopic maculopathy. Retrospective,…”
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Investigating the Disk–Jet Structure in M87 through Flux Separation in the Linear and Circular Polarization Images by Tsunetoe, Yuh, Mineshige, Shin, Kawashima, Tomohisa, Ohsuga, Ken, Akiyama, Kazunori, Takahashi, Hiroyuki R.

“…For testing different electron temperature ( T e ) prescriptions in general relativistic magnetohydrodynamics (GRMHD) simulations through observations, we…”
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Acute myeloid leukemia in children: Current status and future directions by Taga, Takashi, Tomizawa, Daisuke, Takahashi, Hiroyuki, Adachi, Souichi

“…Acute myeloid leukemia (AML) accounts for 25% of pediatric leukemia and affects approximately 180 patients annually in Japan. The treatment outcome for…”
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Global Trends of Latent Prostate Cancer in Autopsy Studies by Kimura, Takahiro, Sato, Shun, Takahashi, Hiroyuki, Egawa, Shin

“…The incidence of prostate cancer (PC) has been increasing in Asian countries, where it was previously low. Although the adoption of a Westernized lifestyle is…”
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