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3篇 您的检索式：作者名="Y.Nishimura"

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		题名	作者	年代	出处	被引量
	1	161例肺部结节非增强MRI的定量和定性评价显示文摘本研究旨在前瞻性地比较非增强(Non-CE)MRI和多层CT(MDCT)对肺部结节的诊断能力。共161例病人的200个肺结节曾行MDCT和Non-CEMRI(T1WI,T2WI和STIR)	H.Koyama Y.Ohno A.Kono D.Takenaka Y.Maniwa Y.Nishimura 邓军	2008	国际医学放射学杂志2008，31，A06：	20
	2	Parallel Algebraic Multigrid Methods in Gyrokinetic Turbulence Simulations显示文摘Parallel algebraic multigrid methods in gyrokinetic turbulence simulations are presented.Discretized equations of the elliptic operator−■^(2)u+αu=f(with bothα=0 and α≠0)are ubiquitous in magnetically confined fusion plasma applications.Whenαis equal to zero a“pure”Laplacian or Poisson equation results and whenαis greater than zero a so called Helmholtz equation is produced.Taking a gyrokinetic turbulence simulation model as a testbed,we investigate the performance characteristics of basic classes of linear solvers(direct,one-level iterative,and multilevel iterative methods)on 2D unstructured finite element method(FEM)problems for both the Poisson and the Helmholtz equations.	M.F.Adams Y.Nishimura	2007	Communications in Computational Physics2007，2，5：	0
	3	Full Torus Electromagnetic Gyrokinetic Particle Simulations with Kinetic Electrons显示文摘The full torus electromagnetic gyrokinetic particle simulations using the hybrid model with kinetic electrons in the presence of magnetic shear is presented.The fluid-kinetic electron hybrid model employed in this paper improves numerical properties by removing the tearing mode,meanwhile,preserves both linear and nonlinear wave-particle resonances of electrons with Alfven wave and ion acoustic wave.	Y.Nishimura Z.Lin L.Chen	2009	Communications in Computational Physics2009，5，1：	0

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