Search Results - "Murata, Souichi"

Causes of anxiety among teachers giving face-to-face lessons after the reopening of schools during the COVID-19 pandemic: a cross-sectional study by Wakui, Nobuyuki, Abe, Shinichiro, Shirozu, Shunsuke, Yamamoto, Yuuki, Yamamura, Miho, Abe, Yasuyo, Murata, Souichi, Ozawa, Mizue, Igarashi, Takahiro, Yanagiya, Takahiro, Machida, Yoshiaki, Kikuchi, Mayumi

“…Abstract Background Coronavirus infections are spreading rapidly worldwide, and primary and middle schools are closed in many countries. After the state of…”
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Exact expanding solution of gas sphere under gravity by MURATA, Souichi, NOZAKI, Kazuhiro

“…Exact solutions describing a uniformly expanding or contracting gas sphere of the polytoropic index 3 and an isothermal gas cylinder under gravity are…”
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Nonclassical symmetry of nonlinear diffusion equation and factorization method by Murata, Souichi

“…We present the nonclassical symmetry of a nonlinear diffusion equation whose a nonlinear term is an arbitrary function. Generally, there is no guarantee that…”
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Symmetry of magnetized self-gravitating hydrodynamic equation by Murata, Souichi

“…We deal with a polytropic gas model for the gravitational collapse of a magnetized self-gravitating isothermal cylinder. We concentrate on radial distribution…”
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Nonclassical symmetry analysis for hyperbolic partial differential equation by Murata, Souichi

“…We consider the nonclassical symmetry of one-dimensional hyperbolic differential equations of the form u t + M( u) u x = 0. For the infinitesimal generator V =…”
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New exact solution of the blast wave problem in gas dynamics by Murata, Souichi

“…Various authors have investigated the problem of a propagation and structure of blast wave in gas dynamics during the stage when the symmetrical shock wave is…”
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Non-classical symmetry and Riemann invariants by Murata, Souichi

“…In this paper it is shown that Riemann invariants are invariant under non-classical symmetries of a hyperbolic system. As a specific example, we study the…”
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New class of symmetries for self-gravitating hydrodynamics equations by Murata, Souichi, Nozaki, Kazuhiro

“…A method of calculating a new class of symmetries is presented for partial differential equations. The method gives a new dynamical solution for an isothermal…”
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New class of symmetries and exact solution to the unsteady equations of adiabatic gas dynamics by Murata, Souichi

“…In this paper, we present a new method to obtain a new class of symmetries and invariant solution associated with the symmetries. The key point of our method…”
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Renormalization group symmetry and initial value problem for shallow water equations by Murata, Souichi

“…A new scenario in the renormalization group symmetry method is introduced to solve an initial value problem for a system of partial differential equations. As…”
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Lie symmetry analysis for classification on pattern in excitable media by Murata, Souichi, Yamada, Hiroyasu

“…The dynamics of wave front in two dimensional excitable media is described by the derivative Burgers’ equation. In this paper, we will carry out Lie symmetry…”
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Dynamics of gas sphere under self-gravity by Murata, Souichi, Nozaki, Kazuhiro

“…A new dynamical solution for a gas sphere under self-gravity is presented to describe a development of a gas sphere from a motion-less state to a state of…”
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Renormalization group symmetry method and gas dynamics by Murata, Souichi, Nozaki, Kazuhiro

“…A new scenario in the renormalization group symmetry method is introduced to solve an initial value problem for a system of partial differential equations. As…”
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Nonclassical symmetry and Riemann invariants by Murata, Souichi

“…In this paper it is shown that Riemann invariants are invariant under nonclassical symmetries of a hyperbolic system. As a specific example, we study the…”
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New class of symmetries for self-gravitating hydrodynamics equations by Murata, Souichi, Nozaki, Kazuhiro

“…A method of calculating a new class of symmetries is presented for partial differential equations. The method give a new dynamical solution for an isothermal…”
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Dynamics of gas sphere under self-gravity by Murata, Souichi, Nozaki, Kazuhiro

“…Phys.Lett. A332 (2004) 35-38 A new dynamical solution for a gas sphere under self-gravity is presented to describe a development of a gas sphere from a…”
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