相沢 洋二 Aizawa Y.

ID:1000070088855

早稲田大学理工学術院応用物理学科 (2008年 CiNii収録論文より)

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Articles:  1-20 of 120

  • A Memorial Writing for Dr.E.N.Lorenz  [in Japanese]

    Aizawa Yoji

    日本物理學會誌 63(9), 719, 2008-09-05

  • The Lempel-Ziv Complexity of Non-Stationary Chaos in Infinite Ergodic Cases

    SHINKAI Soya , AIZAWA Yoji , Department of Applied Physics Faculty of Science and Engineering Waseda University , Department of Applied Physics Faculty of Science and Engineering Waseda University

    The large deviation properties of the Lempel-Ziv complexity are studied using a one-dimensional non-hyperbolic chaos map called the "modified Bernoulli map", where the transition between stationary an …

    Progress of Theoretical Physics 116(3), 503-515, 2006-09-25

    DOI  References (28)

  • Weibull and Log-Weibull Laws in the Stationary-Nonstationary Chaos Transition Process : A Phenomenological Model of the Aftershock Statistics in Seismology

    AKIMOTO Takuma , AIZAWA Yoji

    The statistical features of the large fluctuations in the model of the aftershock phenomenon are studied in terms of the stationary-nonstationary chaos transition process. We demonstrate that the cros …

    Progress of Theoretical Physics (161), 148-151, 2006-04-20

    DOI  NDL Digital Collections  References (6)

  • Non-Stationary Effect on the Behavior of an On-Off Ratchet

    MATSUMOTO Takashi , AIZAWA Yoji , Department of Physics and Applied Physics Waseda University , Department of Physics and Applied Physics Waseda University

    The behavior of an on-off ratchet driven by a non-stationary effect is examined numerically. We find that at the stationary/non-stationary transition, mean velocity of the on-off ratchet is independen …

    Progress of Theoretical Physics 115(2), 455-460, 2006-02-25

    DOI  References (11)

  • Large Fluctuations in the Stationary-Nonstationary Chaos Transition

    AKIMOTO T. , Yoji AIZAWA , Department of Applied Physics Faculty of Science and Engineering Waseda University , Department of Applied Physics Faculty of Science and Engineering Waseda University

    Dynamical aspects of the transition process between stationary and nonstaionary chaos are numerically studied using the modified Bernoulli map. It was shown in a previous paper that the mean path of t …

    Progress of Theoretical Physics 114(4), 737-748, 2005-10

    DOI  Cited by (2)

  • Logarithmic Scaling in the Stationary-Nonstationary Chaos Transition

    AKIMOTO Takuma , AIZAWA Yoji , Department of Applied Physics Faculty of Science and Engineering Waseda University , Department of Applied Physics Faculty of Science and Engineering Waseda University

    Statistical features of the transition process from stationary to nonstationary chaos are studied using modified Bernoulli maps. The stationary-nonstationary chaos transition process can be generated …

    Progress of Theoretical Physics 110(5), 849-860, 2003-11-25

    DOI  References (15) Cited by (3)

  • Anomalous Diffusion in a Hamiltonian System

    MIYAGUCHI Tomoshige , AIZAWA Yoji , Department of Applied Physics Faculty of Science and Engineering Waseda University , Department of Applied Physics Faculty of Science and Engineering Waseda University

    We investigate transport properties of a Hamiltonian system with two degrees of freedom. We found that, for a range of parameter values, transport is superdiffusive, and we numerically comfirmed that …

    Progress of Theoretical Physics 109(1), 145-149, 2003-01-25

    DOI  References (11) Cited by (1)

  • Generation of the Correlation between Rule and Density in Rule-Dynamical Systems

    KIM Song-Ju , AIZAWA Yoji

    `Rule-dynamics' is a framework for simple models of rule-changing systems using cellular automata (CA) rules. We realize the transition process from CA to rule-dynamics by adjusting one parameter. Thr …

    Journal of the Physical Society of Japan 71(8), 1798-1801, 2002-08-15

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  • Dynamical Systems That Produce the Levy Flights

    MIYAGUCHI Tomoshige , AIZAWA Yoji , Department of Applied Physics Faculty of Science and Engineering Waseda University , Department of Applied Physics Faculty of Science and Engineering Waseda University

    We introduce a one-dimensional map producing flights of arbitrary length and explain that the orbits and the density functions that evolve under this map have the same properties as Levy flight. We de …

    Progress of Theoretical Physics 106(4), 697-704, 2001-10-25

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  • Cluster Formations in Rule Dynamical Systems : Emergence of Non-Local Effects

    KIM Song-ju , AIZAWA Yoji , Department of Applied Physics Waseda University , Department of Applied Physics Waseda University

    A rule dynamical system is constructed using one-dimensional elementary cellular automata, and the mechanism of pattern clustering is studied in detail. We are able to explain cluster formation in ter …

    Progress of Theoretical Physics 104(2), 289-305, 2000-08-25

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  • On the Diagram for the Onset of Global Chaos and Reconnection Phenomena in the Quadratic Nontwist Map

    SHINOHARA Susumu , AIZAWA Yoji

    The quadratic nontwist map is studied by defining the "indicator points" for the phase space.The indicator points enable us to obtain useful information concerning the onset of global chaos and reconn …

    Progress of Theoretical Physics 139, 527-534, 2000-07-14

    DOI  NDL Digital Collections  References (12)

  • Kinetic Laws of Clustering Motions in N-Body Systems

    AIZAWA Yoji

    A kinetic theory of cluster formation is developed based on the recent numerical results of N-body systems.First, a stability criterion for equilibrium clusters is formulated in terms of residence tim …

    Progress of Theoretical Physics 139, 1-11, 2000-07-14

    DOI  NDL Digital Collections  References (9)

  • Clustering Motions in N-Body Systems : Computer Experiments of Kinetic Laws

    AIZAWA Yoji , SATO Kunihiro , ITO Kenichiro , Department of Applied Physics Faculty of Science and Engineering Waseda University:International Solvay Institute for Physics and Chemistry , Department of Applied Physics Faculty of Science and Engineering Waseda University , Department of Applied Physics Faculty of Science and Engineering Waseda University

    The dynamical process of cluster formation is numerically studied by carrying out with 2-dimensional N-body systems under short-range interactions. First, we give a theoretical definition of cluster b …

    Progress of Theoretical Physics 103(3), 519-540, 2000-03-25

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  • Punctuated Equilibrium Behavior and Zipf's Law in the Stochastic Branching Process Model of Phylogeny

    MATSUMOTO Takashi , AIZAWA Yoji , Department of Applied Physics Waseda University , Department of Applied Physics Waseda University

    A stochastic branching process model of phylogeny with niche space and interactions among species is considered. For an intermediate interaction range, the time series of diversity has long periods of …

    Progress of Theoretical Physics 102(5), 909-915, 1999-11-25

    DOI  References (11)

  • Criticality in the Time Evolution of the Crust Strength  [in Japanese]

    UTSUMI Taisuke , AIZAWA Yoji

    日本地震学会講演予稿集 = Programme and abstracts, the Seismological Society of Japan 1999(2), A33, 1999-11-09

    References (3)

  • Synchronization Phenomena in Rule Dynamical Systems

    KIM Song-Ju , AIZAWA Yoji , Department of Applied Physics Waseda University , Department of Applied Physics Waseda University

    A rule-dynamical system is constructed using a simple one-dimensional cellular automata (CA), and a method to construct a generalized rule-dynamical system is also introduced. The various synchronizat …

    Progress of Theoretical Physics 102(4), 729-748, 1999-10-25

    DOI  References (10)

  • Indicators of Reconnection Processes and Transition to Global Chaos in Nontwist Maps

    SHINOHARA Susumu , AIZAWA Yoji , Department of Applied Physics Waseda University , Department of Applied Physics Waseda University

    Reconnection processes of twin-chains are systematically studied in the quadratic twist map. By using the reversibility and symmetry of the mapping, the location of the indicator points is theoretical …

    Progress of Theoretical Physics 100(2), 219-233, 1998-08-25

    DOI  References (6)

  • ノン・ツイスト写像のカオスへの遷移機構 (ハミルトン力学系とカオス)  [in Japanese]

    篠原 晋 , 相沢 洋二

    この論文は国立情報学研究所の電子図書館事業により電子化されました。

    物性研究 70(4), 584-587, 1998-07

    IR  NDL Digital Collections 

  • One-Dimensional Fractal Map  [in Japanese]

    永井 喜則 , 相沢 洋二

    Memoirs of the Kokushikan University,Center for Information Science (19), 21-28, 1998-03

  • Separation and Sub-statistics of Energy Levels in Oval billiard  [in Japanese]

    MAKINO H. , HARAYAMA T. , AIZAWA Y.

    Meeting Abstracts of the Physical Society of Japan 53.2.3(0), 773, 1998

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