Article
Physics, Multidisciplinary
Nikita P. Kryuchkov, Vladimir N. Mantsevich, Stanislav O. Yurchenko
Summary: This study numerically and analytically investigates the spectra of two harmonic oscillators with stochastically fluctuating coupling and driving forces, showing that the oscillation spectra exhibit mixing even at small coupling.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
K. Premalatha, V. K. Chandrasekar, L. Senthilkumar, M. Lakshmanan
Summary: We investigate the impact of shear on the emergence of symmetry-breaking dynamical states in a globally coupled Stuart-Landau oscillator system with attractive and repulsive interactions. Without shear, the system displays synchronization, nontrivial oscillation death states, and oscillation death states. However, the introduction of shear leads to diverse dynamical patterns, such as amplitude clusters, solitary states, complete synchronization, and nontrivial oscillation death states.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Fluids & Plasmas
A. Ragavan, M. Manoranjani, D. V. Senthilkumar, V. K. Chandrasekar
Summary: We have observed the emergence of distinct multistable chimera states, in addition to chimera death and synchronized states, in a smallest population of three globally coupled oscillators with mean-field diffusive coupling. A series of torus bifurcations result in the manifestation of distinct periodic orbits, leading to the creation of chimera states with two synchronized oscillators coexisting with an asynchronous oscillator. Subsequent Hopf bifurcations lead to homogeneous and inhomogeneous steady states, resulting in desynchronized steady states and chimera death state among the coupled oscillators. The stability of periodic orbits and steady states is lost through a sequence of saddle-loop and saddle-node bifurcations, ultimately resulting in a stable synchronized state. We have also extended these findings to N coupled oscillators and derived the variational equations corresponding to perturbation transverse to the synchronization manifold, confirming the synchronized state in the two-parameter phase diagrams using its largest eigenvalue. Chimera states in three coupled oscillators emerge as a solitary state in N coupled oscillator ensemble.
Article
Chemistry, Multidisciplinary
Zhengyuan Zhang, Liming Dai
Summary: This research explores the impact of synaptic pruning on a ring-shaped neural network with non-locally coupled FitzHugh-Nagumo (FHN) oscillators. Neurons in the pruned region synchronize and repel the coherent domain of chimera states. The width of the pruned region determines the precision and efficiency of controlling the position of coherent domains.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Mingxue Yang, Shuangjian Guo, Yirui Chen, Qionglin Dai, Haihong Li, Junzhong Yang
Summary: This study identified a two-frequency chimera state in which oscillators in different coherent domains oscillate at different velocities. Oscillators in coherent domains with higher mean phase velocity almost synchronize, while those in domains with lower mean phase velocity are randomly partitioned into two groups in antiphase. Additionally, the dynamics of local mean fields in these two types of coherent domains are found to be different.
NONLINEAR DYNAMICS
(2021)
Article
Mathematics, Applied
N. Nikishina, E. Rybalova, G. Strelkova, T. Vadivasova
Summary: This study investigates the spatio-temporal dynamics of networks of chaotic discrete-time systems in the presence of colored Gaussian noise-modulated nonlocal coupling. The results show that the dynamics and spatio-temporal structures of the network can be controlled by varying the intensity and spectral characteristics of the coupling noise.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2024)
Article
Mathematics, Interdisciplinary Applications
Marouane Ayyad, Saliya Coulibaly
Summary: Cellular automata are useful in information theory and their patterns are closely related to computational mechanics in distributed complex systems. Investigating their physical implementation in the framework of chimera states reveals the existence of cellular automata-type dynamics in optical chimera states. These two systems share a variety of attributes in terms of computational abilities.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Mathematics, Applied
Hyunsuk Hong, Erik A. Martens
Summary: This study investigated the phase coherence dynamics in coupled oscillators based on the correlation between frequencies and coupling strengths. Results showed that in the case of correlated disorder, the oscillator population splits into two subpopulations, while in the uncorrelated case, it may split into four phase-locked subpopulations, leading to periodic global synchronization motion. In both cases of disorder, an incoherent state exists, with instability observed in the correlated case and neutral stability in the uncorrelated case.
Article
Mathematics
Francisco Javier Martin-Pasquin, Alexander N. Pisarchik
Summary: In this paper, a method is proposed to analyze chaotic dynamics using the Langevin equation, discussing the role of Brownian motion and chaotic oscillators in quantum mechanics and phase synchronization. The results show that both stochastic and deterministic models can explain the phenomenon of phase synchronization, demonstrating the existence of phase multistability in the phase synchronization regime.
Article
Mathematics, Applied
Igor A. Shepelev, Sishu S. Muni, Eckehard Schoell, Galina I. Strelkova
Summary: In a bilayer network of van der Pol oscillators with repulsive coupling, anti-phase synchronization of spatiotemporal structures was observed for all considered combinations of intra-layer coupling. The correlation coefficient between symmetrical pairs of network nodes tended to be close to -1 in the case of anti-phase synchronization. The form of synchronous structures depended on the intra-layer coupling strengths, which varied with the repulsive inter-layer coupling.
Article
Mathematics, Applied
Yifan Liu, Juan Perez-Mercader, Istvan Z. Kiss
Summary: A passive electrochemical coupling approach is proposed to induce spontaneous synchronization between chemical oscillators. The coupling strength is sufficient to maintain synchronization in a highly drifting system. Numerical simulations and experiments confirm the effectiveness of the proposed coupling scheme, opening new avenues for designing pattern recognition and neuromorphic computation systems using chemical reactions in a spontaneous process.
Article
Mechanics
Gabriel Mercado-Vasquez, Denis Boyer, Satya N. Majumdar
Summary: This study investigates the mean first passage time (MFPT) of a one-dimensional Brownian particle with an external potential in a finite domain. It shows that there is an optimal stiffness that minimizes the MFPT to an absorbing target when the target distance exceeds a critical value. However, when the target distance is below the critical value, the optimal stiffness disappears. The study also reveals that the freezing transition in the optimal stiffness becomes discontinuous when the reflective wall is replaced by a second absorbing target. The phase diagram exhibits three dynamical phases and metastability, with a 'triple' point at specific coordinates. Finally, for harmonic or higher order potentials, the MFPT always increases with stiffness at small values.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Multidisciplinary Sciences
Sh Saedi, F. Kheirandish
Summary: Exact matrix elements of the reduced density matrix for a prototype quadratic Hamiltonian describing a driven, dissipative system are obtained from a generating function using normal characteristic functions. The approach is based on Heisenberg equations of motion and operator calculus, with special and limiting cases discussed.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Multidisciplinary
Leonard Hallier, Everton S. Medeiros, Antonio Mihara, Rene O. Medrano-T, Anna Zakharova
Summary: The replication of periodic windows in networked nonlinear systems can lead to stable periodic behavior, expanding the stability domains and enhancing the network's resilience to external disturbances.
Article
Physics, Fluids & Plasmas
Bojun Li, Nariya Uchida
Summary: The study shows that the multichimera state disappears when the phase delay parameter alpha exceeds a critical value, but reappears when further increased. A transition from multichimera to multitwisted states is observed, involving five collective phases.
Article
Physics, Multidisciplinary
Wenchen Han, Shun Gao, Changwei Huang, Junzhong Yang
Summary: This study introduces a circular opinion model and investigates the dynamics of circular opinions on a ring with the backfire effect. The interplay between circular opinions and repulsive interaction leads to rich opinion dynamics. Six types of opinion states are identified based on their profiles in opinion space and spatial organizations.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2022)
Article
Physics, Multidisciplinary
Liming Zhang, Haihong Li, Qionglin Dai, Junzhong Yang
Summary: This study investigates the promotion of cooperation in a population that migrates based on the comparison between local and global environments. The results show that cooperation can be significantly enhanced through the clustering of cooperators and the coalescence of cooperator clusters.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2022)
Article
Mathematics, Applied
Liming Zhang, Haihong Li, Qionglin Dai, Junzhong Yang
Summary: This study investigates how players adjust their persistence levels based on the comparison between local and global environments. The results show that adaptive strategy persistence can greatly enhance network reciprocity, especially in hostile environments to cooperation.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Computer Science, Interdisciplinary Applications
Mingxue Yang, Yirui Chen, Wenchen Han, Junzhong Yang
Summary: In this study, the multi-stability of multi-clustered chimera states in a ring of nonlocally coupled Brusselators is investigated. It is found that the phenomenon is insensitive to the coupling radius. The mechanisms behind the multi-stability of different types of multi-clustered chimera states are explored.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2023)
Article
Physics, Condensed Matter
Jiawei Wang, Liming Zhang, Haihong Li, Qionglin Dai, Junzhong Yang
Summary: Inequality induces two types of emotions, envy and guilt, which have different effects on the evolution of cooperation in spatial evolutionary games. Envy hinders cooperation, while guilt promotes it. Additionally, envy has a negative impact on fairness, while guilt has a positive role in fairness.
EUROPEAN PHYSICAL JOURNAL B
(2023)
Article
Computer Science, Interdisciplinary Applications
Hongwei Zhu, Qionglin Dai, Haihong Li, Junzhong Yang
Summary: In this paper, the authors study the effects of parameter heterogeneity on the coupling dynamics of three coupled Lorenz oscillators. It is found that in the presence of parameter heterogeneity, the complete synchronous state is replaced by lag synchronous state with the same Lyapunov exponent as the complete synchronous chaos. Two types of oscillation quenching states, homogeneous nontrivial equilibria and heterogeneous equilibria, are observed depending on the coupling strength. The transition among lag synchronous state and different types of quenching states is found to be discontinuous.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2023)
Article
Chemistry, Applied
Wenhao Wang, Koji Miyatake, Takeo Saito, Yuto Harada, Shohei Yamaguchi, Masahiro Koyama, Kozo Nakamura
Summary: Acetylcholine in eggplants has the potential to alleviate hypertension and negative psychological state by suppressing sympathetic nervous activity. Information about eggplants with high acetylcholine content is limited. In this study, we investigated 100 eggplant accessions and found that they commonly contain high levels of acetylcholine, with the green spherical eggplant from Laos having the highest content.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Biochemistry & Molecular Biology
Wenhao Wang, Shohei Yamaguchi, Masahiro Koyama, Kozo Nakamura
Summary: Daily consumption of eggplant powder containing 2.3 mg acetylcholine (ACh) can alleviate hypertension and improve mental status. However, the antihypertensive compound γ-aminobutyric acid (GABA) in eggplant is not sufficient to have a hypotensive effect. ACh is the main component associated with the antihypertensive effects of eggplant. Compared with GABA, ACh could be a more effective functional food constituent for lowering blood pressure.
Article
Materials Science, Multidisciplinary
Rui Wang, Shaoxiong Hu, Wei Zhu, Yue Huang, Wenhao Wang, Ying Li, Yuchen Yang, Jiajie Yu, Yuan Deng
Summary: This article summarizes the recent advances in modern tactile sensor arrays, from sensor array fabrication to advanced applications. The main preparation methods of patterned arrays, including screen printing, 3D printing, laser microprocessing, and textile technology, are discussed in detail. Strategies to optimize signal crosstalk caused by flexible high-density sensor arrays are introduced from the perspective of structure design and circuit design. The development of multimodal detection for sensors is also discussed.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Wenhao Wang, Xuchao Gu, Ziyi Cao, Xiaojun Wang, Yiming Lei, Xiaoli Xu, Shiwen Wang, Tao Wu, Zhijun Bao
Summary: This study explores the association between adipokines, skeletal muscle function, and bone mineral density (BMD) in middle-aged and elderly individuals. The results show that individuals with lower skeletal muscle mass have poorer grip strength, longer 5-Times-Sit-to-Stand Test (FTSST) duration, and lower BMD, while expressing higher levels of adipokines LEP, ADIPOQ, RBP4, and DPP4.
LIPIDS IN HEALTH AND DISEASE
(2023)
Article
Materials Science, Biomaterials
Wenhao Wang, Shengyuan Jia, Guohou Miao, Zhenmin Sun, Feng Yu, Zhixing Gao, Yuli Li
Summary: In this study, a new type of calcium-enhanced radial mesoporous micro-nano bioactive glass (HCa-MBG) was found to be more effective than traditional bioactive glasses (BGs) in treating ulcerative colitis (UC). BGs significantly reduced the expression of inflammatory factors and repaired the damaged colonic mucosa in UC models. This study confirmed for the first time that BGs can be used as an adjuvant drug in UC treatment, thereby preventing UC progression.
BIOMATERIALS ADVANCES
(2023)
Article
Chemistry, Analytical
Xiaodong Wang, Wenhao Wang, Qinggui Lei, Zhengming Qian, Wenbin Deng
Summary: The study develops a rapid and eco-friendly LC-MS method for the determination of aesculin and aesculetin in Cortex Fraxini. The method reduces the use of harmful solvents and analysis time significantly. Through careful optimization and selection of LC-MS conditions, the analysis time is reduced to only 1 minute without compromising the method's efficiency. The developed method exhibits excellent specificity, linearity, limit, precision, accuracy, and stability, and can quantitate aesculin and aesculetin in Cortex Fraxini samples.
Article
Mathematics
Wenhao Wang
Summary: This paper studies bi-orders on groups and proves that the derived subgroup is convex under any bi-order, and studies the convex hull of the derived subgroup of a free metabelian group of higher rank. As an application, it is proved that the space of bi-orders of a non-abelian free metabelian group of finite rank is homeomorphic to the Cantor set, and it is shown that no bi-order for these groups can be recognized by a regular language.
JOURNAL OF GROUP THEORY
(2023)
Correction
Biochemical Research Methods
Zhengming Qian, Qinggui Lei, Chuanxi Wang, Qi Huang, Wenqiang Li, Wenhao Wang
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
(2023)
Article
Biochemistry & Molecular Biology
Peng Jiang, Nian Liu, Yuyang Xiu, Wenhao Wang, Changyuan Wang, Dongjie Zhang, Zhijiang Li
Summary: This study identified and analyzed antioxidant peptides in sorghum and rice through in vitro gastrointestinal digestion. The results showed that the protein digestibility of both sorghum and rice increased after digestion. Certain peptides in sorghum and rice exhibited antioxidant activities and could potentially be used as functional foods to modulate chronic diseases.