===== Welcome to this website ! =====
A simple-minded physics researcher
A view in my office: The four Chinese characters on the Japanese fan mean a
serene state of mind just like clear mirrors and still waters, which are
pronounced as gMei-Kyo-Shi-Suih in Japanese.
Department of Mathematical Sciences
Graduate School of Engineering
Osaka Prefecture University
Sakai 599-8531, Japan
Nonlinear dynamics; Statistical mechanics and dynamics of coupled oscillators.
Introduction to Mechanics
Introduction to Statistical Mechanics
Advanced Nonlinear Dynamics
Recent research subjects
1. Dynamics of coupled active and inactive units;
in particular, aging transitions in large populations of active and inactive
(Such a study was initiated by our work: H.D. & K. Nakanishi, Phys. Rev. Lett. 93, 104101 (2004).)
2. Critical phenomena, including the synchronization transition, in large
populations of@coupled oscillators.
(For my papers in this direction, see the following reviews:
S. H. Strogatz, Physica D, 143, 1 (2000); J. A. Acebron et al., Rev. Mod. Phys. 77, 137 (2005).)
3. Population dynamics of clock-controlled biological species.
(See H. D., Phys. Rev. Lett. 87, 048101 (2001); J. theor. Biol. 217, 425 (2002).)
Limit cycle, coupled oscillators, entrainment, synchronization, chaos, biological
Doctor of Science (Kyoto University).
Watching games of professional baseball, especially MLB, on TV. You might as well
guess what other hobbies of mine would be.
Usually PERIODIC, but sometimes CHAOTIC.
@ Aging-Related Studies
My recent studies have been mainly devoted to effects of AGING in large
populations of coupled dynamical units, where gagingh is defined to be an
increase in the ratio of inactive units caused by deterioration due to literal
aging, accidents, diseases (in the case of living organisms) and so on.
As aging in this sense proceeds, a transition takes place from a dynamic state
to a static one at a certain critical value of the ratio, which transition is what we
call an AGING TRANSITION. The occurrence of such a transition is fatal to
technological systems as well as living creatures. The critical ratio is a measure
of the robustness of the systemfs dynamic activity against defects. So far, a
variety of systems have been investigated from this point of view not only by
our group, but also by other groups. The above concept of robustness is also
used in the area of complex networks.
My studies in this direction have been supported by KAKENHI ( Grant in aid
for scientific research from the Japan Society for the Promotion of Science).
G. Tanaka, K. Morino, H. Daido, and K. Aihara, gDynamical robustness of
coupled heterogeneous oscillatorsh,
Phys. Rev. E 89, 052906 (2014).
H. Daido, A. Kasama, K. Nishio, gOnset of dynamic activity in globally coupled
excitable and oscillatory unitsh ,
Phys. Rev. E 88, 052907 (2013).
H. Daido, gStrong-coupling limit in heterogeneous populations of coupled
Phys. Rev. E 84, 016215 (2011).
H. Daido, gDynamics of a large ring of coupled active and inactive oscillatorsh,
Phys. Rev. E 83, 026209 (2011).
H. Daido, gSuppression and recovery of spatiotemporal chaos in a ring of
coupled oscillators with a single inactive siteh,
Europhys. Lett. 87, 40001 (2009).
H. Daido, gAging transition and disorder-induced coherence in locally coupled
Europhys. Lett. 84, 10002 (2008).
H. Daido, gCooperative entrainment and aging in globally coupled oscillatorsh,
Nonlinear Phenomena in Complex Systems 10, 72 (2007).
H. Daido and K. Nakanishi, gAging and clustering in globally coupled
Phys. Rev. E 75, 056206 (2007); 76, 049901(E) (2007).
H. Daido and K. Nakanishi, gDiffusion-induced inhomogeneity in globally
coupled oscillators: Swing-by mechanismh,
Phys. Rev. Lett. 96, 054101 (2006).
H. Daido and K. Nakanishi, gAging transition and universal scaling in oscillator
networksh, Phys. Rev. Lett. 93, 104101 (2004).
H. Daido, gDynamics of heterogeneous populations of coupled oscillatorsh,
AIP Conf. Proc. 1468, 127 (2011).
H. Daido, gDynamics of large ensembles of coupled active and inactive oscillatorsh,
Procedia IUTAM 5, 220 (2012).
H. Daido, gDynamics of a partially inactivated population of coupled oscillatorsh,
NOLTA f09 Proceedings, 163 (2009).
H. Daido, N. Kawata, Y. Sano, and S. Yamaguchi, gDynamics of a large
population of coupled active and inactive oscillators: Effects of nonscalar
coupling and frequency distributionh,
AIP Conf. Proc. 1076, 33 (2008).
H. Daido, gDynamics of a large population of coupled active and inactive
NDESf07 Proceedings, 22 (2007).
K. Nakanishi and H. Daido, gAging transition and universal scaling in in
globally coupled oscillatorsh,
Prog. Theor. Phys. Suppl. 161, 173 (2006).