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Muto, Momotaro,Nakata, Hirotaka,Ishigaki, Kenichi,Tachibana, Shion,Yoshida, Moe,Muto, Mizue,Yanagawa, Nobuyuki,Okumura, Toshikatsu The Korean Gastric Cancer Association 2021 Journal of gastric cancer Vol.21 No.3
The abscopal effect refers to the phenomenon in which local radiotherapy is associated with the regression of metastatic cancer that is distantly located from the irradiated site. Here, we present a case of a patient with advanced gastric cancer and brain metastases who was successfully treated with brain radiotherapy and anti-programmed death-1 (PD-1) therapy-induced abscopal effect. Although anti-PD-1 therapy alone could not prevent disease progression, the metastatic lesions in the brain and also in the abdominal lymph node showed a drastic response after brain radiotherapy and anti-PD-1 therapy. To our knowledge, this is the first reported case of successful treatment of advanced gastric cancer with multiple brain and abdominal lymph node metastases, possibly through anti-PD-1 therapy combined with brain radiotherapy-induced abscopal effect. We suggest that the combination of brain radiotherapy and anti-PD-1 therapy may be considered as a therapeutic option for advanced gastric cancer, especially when there is brain metastasis.
SOME EIGENFORMS OF THE LAPLACE-BELTRAMI OPERATORS IN A RIEMANNIAN SUBMERSION
MUTO, YOSIO Korean Mathematical Society 1978 대한수학회지 Vol.15 No.1
It is given in the Lecture Note [1] of Berger, Gauduchon and Mazet that, if ${\pi}$n: (${\tilde{M}}$, ${\tilde{g}}$)${\rightarrow}$(${\tilde{M}}$, ${\tilde{g}}$) is a Riemannian submersion with totally geodesic fibers, ${\Delta}$ and ${\tilde{\Delta}}$ are Laplace operators on (${\tilde{M}}$, ${\tilde{g}}$) and (M, g) respectively and f is an eigenfunction of ${\Delta}$, then its lift $f^L$ is also an eigenfunction of ${\tilde{\Delta}}$ with the common eigenvalue. But such a simple relation does not hold for an eigenform of the Laplace-Beltrami operator ${\Delta}=d{\delta}+{\delta}d$. If ${\omega}$ is an eigenform of ${\Delta}$ and ${\omega}^L$ is the horizontal lift of ${\omega}$, ${\omega}^L$ is not in genera an eigenform of the Laplace-Beltrami operator ${\tilde{\Delta}}$ of (${\tilde{M}}$, ${\tilde{g}}$). The present author has obtained a set of formulas which gives the relation between ${\tilde{\Delta}}{\omega}^L$ and ${\Delta}{\omega}$ in another paper [7]. In the present paper a Sasakian submersion is treated. A Sasakian manifold (${\tilde{M}}$, ${\tilde{g}}$, ${\tilde{\xi}}$) considered in this paper is such a one which admits a Riemannian submersion where the base manifold is a Kaehler manifold (M, g, J) and the fibers are geodesics generated by the unit Killing vector field ${\tilde{\xi}}$. Then the submersion is called a Sasakian submersion. If ${\omega}$ is a eigenform of ${\Delta}$ on (M, g, J) and its lift ${\omega}^L$ is an eigenform of ${\tilde{\Delta}}$ on (${\tilde{M}}$, ${\tilde{g}}$, ${\tilde{\xi}}$), then ${\omega}$ is called an eigenform of the first kind. We define a relative eigenform of ${\tilde{\Delta}}$. If the lift ${\omega}^L$ of an eigenform ${\omega}$ of ${\Delta}$ is a relative eigenform of ${\tilde{\Delta}}$ we call ${\omega}$ an eigenform of the second kind. Such objects are studied.
Effectiveness of Power Gating for a Superscalar processor
Tetsuya Muto,Kimiyoshi Usami 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
As the miniaturization of manufacturing process gets advanced, leakage power consumption quickly increases and becomes dominant in the total power consumption. Power Gating (PG) is a well-known technique that efficiently reduces leakage power. However effectiveness by applying PG to Functional units of a Superscalar processor has not been studied enough. In this paper, we investigated the effectiveness for a Superscalar processor assuming “2Way” and “4Way” by using a Simplescalar processor simulator with “pisa” architecture. Simulation results for programs in SPEC CPU 2000 and MiBench showed that applying PG to one ALU in four integer ALUs is effective in “4Way.” Effective sleep cycles that gives the net energy-savings occupy 63% in the total execution cycles on average. Applying PG to the integer Mult/Div also contributes to energy reduction. In “2Way,” only applying PG to the integer Mult/Div is effective.