A5066219206- Nonlinear Dynamics and Pattern Formation
- Neural Networks Stability and Synchronization
- Magnetic and transport properties of perovskites and related materials
- Complex Network Analysis Techniques
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Photonic and Optical Devices
- Opinion Dynamics and Social Influence
- Gene Regulatory Network Analysis
- Semiconductor Lasers and Optical Devices
- Neuroscience and Neuropharmacology Research
- Catalytic Processes in Materials Science
- Analytical Chemistry and Chromatography
- Analytical Methods in Pharmaceuticals
- stochastic dynamics and bifurcation
- Electronic and Structural Properties of Oxides
- TiO2 Photocatalysis and Solar Cells
- Neurobiology of Language and Bilingualism
- Advanced Photocatalysis Techniques
- Epilepsy research and treatment
- Engineering Structural Analysis Methods
- Quantum chaos and dynamical systems
- Complex Systems and Time Series Analysis
- Neural dynamics and brain function
- Advanced ceramic materials synthesis
Northwestern University
2013-2024
Kobe City Medical Center General Hospital
2024
Daikin (Japan)
2021-2023
Dai Nippon Printing (Japan)
2023
Osaka University
1962-2021
Naragakuen University
2021
Tokyo Institute of Technology
1993-2020
The University of Tokyo
1996-2019
National Astronomical Observatory of Japan
2016
Tohoku University
2015
Small-world and scale-free networks are known to be more easily synchronized than regular lattices, which is usually attributed the smaller network distance between oscillators. Surprisingly, we find that with a homogeneous distribution of connectivity synchronizable heterogeneous ones, even though average larger. We present numerical computations analytical estimates on synchronizability in terms its heterogeneity parameters. Our results suggest some degree homogeneity expected naturally...
Abstract Purpose: Histone deacetylase (HDAC) inhibitors have emerged recently as promising anticancer agents. They arrest cells in the cell cycle and induce differentiation death. The antitumor activity of HDAC has been linked to their ability gene expression through acetylation histone nonhistone proteins. However, it suggested that may also enhance other cancer therapeutics, including radiotherapy. purpose this study was evaluate radiosensitize human melanoma vitro. Experimental Design: A...
The domino effect in power failure Sometimes a can be fairly local, but other times, seemingly identical initial cascade to cause massive and costly breakdown the system. Yang et al. built model for North American grid network based on samples of data covering years 2008 2013 (see Perspective by D'Souza). Although observed cascades were widespread, small fraction all components, particularly ones that most cohesive within network, vulnerable cascading failures. Larger associated with...
We consider maximization of the synchronizability oscillator networks by assigning weights and directions to links a given interaction topology. By extending master stability formalism all possible network structures, we show that, unless some is linked others, maximally synchronizable are necessarily nondiagonalizable can always be obtained imposing unidirectional information flow with normalized input strengths. The results provide insights into hierarchical structures observed in complex...
Spin susceptibility and spin-lattice relaxation rate of 51 V nuclear moments CaV 4 O 9 with tetragonal structure have been measured. They exhibit characteristics spin gap systems. This provides the first example quasi-two-dimensional systems gap.
Synchronization, in which individual dynamical units keep pace with each other a decentralized fashion, depends both on the and properties of interaction network. Yet, role played by network has resisted comprehensive characterization within prevailing paradigm that interactions facilitating pairwise synchronization also facilitate collective synchronization. Here we challenge this show networks best complete synchronization, least coupling cost, maximum robustness, have arbitrary complexity...
We derive a master stability function (MSF) for synchronization in networks of coupled dynamical systems with small but arbitrary parametric variations. Analogous to the MSF identical systems, our generalized simultaneously solves linear-stability problem near-synchronous states (NSS) all possible connectivity structures. also general sufficient condition stable near-synchronization and show that error scales linearly magnitude parameter Our analysis underlines significant role played by...
The dynamics of power-grid networks is becoming an increasingly active area research within the physics and network science communities. results from such studies are typically insightful illustrative, but often based on simplifying assumptions that can be either difficult to assess or not fully justified for realistic applications. Here we perform a comprehensive comparative analysis three leading models recently used study synchronization in -- fundamental problem practical significance...
Cluster synchronization is a phenomenon in which network self-organizes into pattern of synchronized sets. It has been shown that diverse patterns stable cluster can be captured by symmetries the network. Here we establish theoretical basis to divide an arbitrary symmetry clusters independently synchronizable sets, stability individual each set decoupled from all other Using this framework, suggest new approach find permanently chimera states capturing two or more clusters---at least one and...
Spontaneous synchronization has long served as a paradigm for behavioral uniformity that can emerge from interactions in complex systems. When the interacting entities are identical and their coupling patterns also identical, complete of entire network is state inheriting system symmetry. As other systems subject to symmetry breaking, such symmetric states not always stable. Here we report on discovery converse breaking--the scenario which stable identically-coupled oscillators but becomes...
Transport properties of La 2- x Sr CuO 4 , YBa 2 Cu 3 O 6+ and Bi 1.6 Pb 0.5 1.9- y 1.05 z have been studied over wide temperature regions. Drastic variations the Hall coefficients R H found in underdoped region hole carriers suggest that there exists a crossover-like change electronic state above room temperature. Temperature dependence other transport at high temperatures is also discussed relation to this anomalous behavior . These results elucidate formation process abnormal metallic...
Fractalization of a torus and its transition to chaos in quasiperiodically forced logistic map is reinvestigated relation strange nonchaotic attractor, with the aid functional equation for invariant curve. The existence fractal an interval parameter space confirmed by length number extrema as well Fourier mode analysis. Mechanisms onset are studied connection intermittency.
Determining the effect of structural perturbations on eigenvalue spectra networks is an important problem because characterize not only their topological structures, but also dynamical behavior, such as synchronization and cascading processes networks. Here we develop a theory for estimating change largest adjacency matrix or extreme eigenvalues graph Laplacian when small arbitrary set links are added removed from network. We demonstrate effectiveness our approximation schemes using both...
In previously identified forms of remote synchronization between two nodes, the intermediate portion network connecting nodes is not synchronized with them but generally exhibits some coherent dynamics. Here we report on a phenomenon call incoherence-mediated (IMRS), in which noncontiguous parts are identically while dynamics part statistically and information-theoretically incoherent. We identify mirror symmetry structure as mechanism allowing for such behavior, show that IMRS robust...
The antiferromagnetic Weyl semimetal ${\mathrm{Mn}}_{3}\mathrm{Sn}$ has been shown to generate strong intrinsic anomalous Hall effect (AHE) at room temperature, due large momentum-space Berry curvature from the time-reversal symmetry-breaking electronic bands of Kagome planes. This prompts us investigate spin effect, a transverse phenomenon with identical origin as AHE. We report inverse experiments in nanocrystalline nanowires temperature using absorption method, which enables...
Behavioral homogeneity is often critical for the functioning of network systems interacting entities. In power grids, whose stable operation requires generator frequencies to be synchronized--and thus homogeneous--across network, previous work suggests that stability synchronous states can improved by making generators homogeneous. Here, we show a substantial additional improvement possible instead suitably heterogeneous. We develop general method attributing this counterintuitive effect...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Y. Shimada, H. Nishimura, M. Nakai, K. Hashimoto, Yamaura, Tao, Shigemori, T. Okuno, Nishihara, Kawamura, A. Sunahara, Nishikawa, Sasaki, Nagai, Norimatsu, S. Fujioka, Uchida, N. Miyanaga, Izawa, C. Yamanaka; Characterization of extreme ultraviolet emission from laser-produced spherical tin plasma generated...
The small-world phenomenon in complex networks has been identified as being due to the presence of long-range links, i.e., links connecting nodes that would otherwise be separated by a long node-to-node distance. We find, surprisingly, many scale-free are more sensitive attacks on short-range than links. This result, besides its importance concerning network efficiency and/or security, striking implication property is mainly
Melanoma differentiation-associated gene-7 (mda-7), recently classified as interleukin-24 (approved gene symbol IL24), is thought to be a tumor suppressor based on the loss of its expression in many different types cancer. Gene therapy by adenovirus-mediated mda-7 (Ad-mda7) transfer has been shown inhibit growth several cell lines, vitro and vivo. We previously demonstrated that Ad-mda7 radiosensitized non-small-cell lung cancer (NSCLC) lines enhancing an apoptosis pathway through activation...