Search Results - "Ishiwata, Tetsuya"

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  1. 1

    Positivity-preserving numerical schemes for stochastic differential equations by Abiko, Keisuke, Ishiwata, Tetsuya

    “…The solutions of stochastic differential equations arising in biology, finance and so on often have positivity. However, numerical solutions by the standard…”
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    Journal Article
  2. 2

    Upper estimates for blow-up solutions of a quasi-linear parabolic equation by Anada, Koichi, Ishiwata, Tetsuya, Ushijima, Takeo

    “…In this paper, we consider a quasi-linear parabolic equation u t = u p ( x xx + u ) . It is known that there exist blow-up solutions and some of them develop…”
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    Journal Article
  3. 3

    A note on blow-up solutions for a scalar differential equation with a discrete delay by Ishiwata, Tetsuya, Nakata, Yukihiko

    “…We study blow-up solutions for a general scalar differential equation with a discrete delay. It is shown that the existence of blow-up solutions for a discrete…”
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    Journal Article
  4. 4

    Asymptotic expansions of traveling wave solutions for a quasilinear parabolic equation by Anada, Koichi, Ishiwata, Tetsuya, Ushijima, Takeo

    “…In this paper, we investigate so-called slowly traveling wave solutions for a quasilinear parabolic equation in detail. Over the past three decades, the motion…”
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    Journal Article
  5. 5

    Blow-up rates of solutions of initial-boundary value problems for a quasi-linear parabolic equation by Anada, Koichi, Ishiwata, Tetsuya

    Published in Journal of Differential Equations (05-01-2017)
    “…We consider initial-boundary value problems for a quasi linear parabolic equation, kt=k2(kθθ+k), with zero Dirichlet boundary conditions and positive initial…”
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    Journal Article
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    Delay-induced blow-up in a planar oscillation model by Eremin, Alexey, Ishiwata, Emiko, Ishiwata, Tetsuya, Nakata, Yukihiko

    “…In this paper we study a system of delay differential equations from the viewpoint of a finite time blow-up of the solution. We prove that the system admits…”
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    Journal Article
  9. 9

    A numerical method of estimating blow-up rates for nonlinear evolution equations by using rescaling algorithm by Anada, Koichi, Ishiwata, Tetsuya, Ushijima, Takeo

    “…In this paper, we proposed a numerical method for estimating blow-up rate of blow-up solutions for a class of nonlinear evolution equations which have a…”
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    Journal Article
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    Motion of non-convex polygons by crystalline curvature and almost convexity phenomena by Ishiwata, Tetsuya

    “…The behavior of solution polygons to generalized crystalline curvature flow is discussed. The conditions to guarantee that the solution polygon keeps its…”
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    Journal Article
  12. 12

    Finite difference scheme for the Landau–Lifshitz equation by Fuwa, Atsushi, Ishiwata, Tetsuya, Tsutsumi, Masayoshi

    “…In this paper we propose a finite difference scheme for the Landau–Lifshitz equation and the Heisenberg equation. These equations describe the evolution of…”
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    Journal Article
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    Solid Phase Extraction of Phosphorus-containing Amino Acid-type Herbicides and Their Metabolites from Human Blood with Titania for Determination by Capillary Electrophoresis by ISHIWATA, Tetsuya, ISHIJIMA, Chiho, OHASHI, Akira, OKADA, Haruki, OHASHI, Kousaburo

    Published in Analytical Sciences (01-06-2007)
    “…Phosphorus-containing amino acid-type herbicides (PAAHs) and their metabolites in human plasma and whole blood were extracted with titania and determined by…”
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    Journal Article
  15. 15

    On the blow-up rate for fast blow-up solutions arising in an anisotropic crystalline motion by Ishiwata, Tetsuya, Yazaki, Shigetoshi

    “…We consider the asymptotic behavior of motion of polygonal convex curves by crystalline curvature in the plane. There appear spontaneously two types of…”
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    Journal Article Conference Proceeding
  16. 16

    The blow-up curve of solutions to one dimensional nonlinear wave equations with the Dirichlet boundary conditions by Ishiwata, Tetsuya, Sasaki, Takiko

    “…In this paper, we consider the blow-up curve of semilinear wave equations. Merle and Zaag (Am J Math 134:581–648, 2012) considered the blow-up curve for ∂ t 2…”
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    Journal Article
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    Absolute Determination Method Using Chirality for Glufosinate and Bialaphos by γ-Cyclodextrin Modified Capillary Zone Electrophoresis by ASAMI, Takayuki, IMURA, Hisanori, OHASHI, Akira, OHASHI, Kousaburo, ISHIWATA, Tetsuya

    Published in Analytical Sciences (2005)
    “…A novel absolute determination method using chirality without any calibration curves or comparison standards has been proposed for phosphorus-containing amino…”
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    Journal Article
  20. 20

    Development of salicylic acid dipstick test by Kirihara, Miho, Ishizawa, Fujio, Ishiwata, Tetsuya

    “…A dipstick test was successfully devised for the screening of salicylic acid in urine. It, named "salicylic acid dipstick test", is TLC plastic sheet which was…”
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    Journal Article