Quasi-consensus tracking problems of uncertain multi-agent systems are investigated in this paper. By integrating impulsive control theory with event-triggered mechanism, a new hybrid consensus protocol is presented, under which the information transmission agents occurs at sequence state-dependent instants. Based on Lyapunov method, several quasi-consensus criteria constructed, as well relation among gains, event parameters, error level, and convergence rate established. It shows that...

This brief investigates nonautonomous stochastic reaction-diffusion neural-network models with S-type distributed delays. First, the existence and uniqueness of mild solution are studied under Lipschitz condition without linear growth condition. Due to a term infinite dimensional Wiener process, criteria for well-posedness established based on evolution system theory. Then, delay, which is an handled by truncation method, sufficient conditions global exponential stability obtained...

Food safety is an important basis for promoting economic development, ensuring social stability and maintaining national security. Research on the evaluation of food security by which to accurately grasp situation establish policies in a scientific manner. Based China’s agricultural data from 2001 2020, this research uses entropy weight TOPSIS model start new connotations goals development stage, takes quantity security, structural ecological resources, policy as breakthrough points, builds...

This article focuses on stability analysis of delayed reaction-diffusion neural-network models with hybrid impulses based the vector Lyapunov function. First, several properties a Halanay-type inequality are given to be key ingredient for analysis. Then, Krasovskii-type theorems established sufficient conditions exponential stability, which removes common threshold in each neuron subsystem at every impulse time. It shows that neural networks can retained involved networks, and...

Dear Editor, This letter establishes several criteria for fixed-time stability and predefined-time of impulsive systems. First, sufficient conditions systems are presented to treat the destabilizing impulses hybrid involving multiple jump maps by control without linear feedback regulation. It determines robustness nonlinear against disturbance which has effect dynamics. Then, is ensured under requirement that have stabilizing accumulative effect. Finally, validity theoretical results...

Considering the impulsive delayed reaction-diffusion stochastic neural networks (IDRDSNNs) with hybrid impulses, finite-time boundedness (FTB) and contractive (FTCB) are investigated in this article. First, a novel delay integral inequality is presented. By integrating comparison principle, some sufficient conditions that ensure FTB FTCB of IDRDSNNs obtained. This study demonstrates impulses can be maintained, even presence perturbations. And for system not due to perturbations, achieving...

It is critical to encourage farmers adopt agriculture technology that beneficial the environment in context of ongoing emphasis on ecological growth agriculture, yet risk and uncertainty diminish incentive these technologies. This research examines whether crop insurance might affect increase willingness Environmentally Friendly Agricultural Technology (EFAT) from a psychological perspective, utilizing data 219 questionnaires Shandong Province. The findings suggest can boost readiness...

<abstract> This paper concerns the input-to-state stability problem of delayed reaction-diffusion neural networks with multiple impulses. After reformulating neural-network model in term an abstract impulsive functional differential equation, criteria are established by direct estimate mild solution and integral inequality infinite distributed delay. It shows that continuous dynamics can be retained under certain disturbance unstable stabilised control, if intervals between impulses bounded....

In this paper, the optimization problem of harvesting for a stochastic logistic model with S-type distributed time delay (which contains both discrete and continuously delay) is studied by using ergodic method.

Dear Editor, This letter studies the input-to-state stability (ISS) for a class of impulsive switched systems, where uncertain impulse-switching moments are involved. The robustness ISS with respect to perturbations occurrence time is revealed by several less conservative dwell-time conditions combined Lyapunov conditions. Moreover, have multiple coefficients at discrete so as handle hybrid effect impulseswitching moments, and case that derivative function indefinite also taken into account....

<abstract> In this paper, a class of survival red blood cells model with time-varying delays and impulsive effects is considered. First, some sufficient conditions for the persistence are derived by use theory on differential equations. The describes persistent mature in mammal under delay perturbations. Then assuming that coefficients $ \omega $-periodic, criteria ensuring existence-uniqueness global attractivity positive $-periodic solution addressed obtained, which suitable any \omega\in...

This article focuses on input-to-state stability (ISS) of impulsive time-delay systems where the hybrid effect impulses with time-dependent multiple jump maps in different subsystems is fully considered. By virtue M-matrix and vector Lyapunov function, some theorems for ISS are established Krasovskii-type conditions which avoid common threshold allow simultaneous existence stable unstable continuous subdynamics. If time intervals between bounded, can be ensured even though exist each...

China is the world’s largest potato producer, and potato’s role in ensuring food security rural development irreplaceable. Therefore, how to achieve sustainable growth production has attracted widespread attention from academia. However, few existing studies have analyzed main potato-producing areas based on farmers’ micro perspectives terms of both technical efficiency output elasticity input factor. This paper investigates elasticities factors, efficiency, its influencing factors among 398...

This paper investigates exponential synchronization for stochastic complex dynamical networks with reaction–diffusion terms and S-type distributed delays. Based on a generalized Halanay inequality Poincaré inequality, adaptive control strategies are established by constructing simple Lyapunov–Krasovskii functional candidate utilizing the truncation method. Some numerical examples provided to demonstrate effectiveness of obtained results. Finally, proposed theoretical results successfully...

Abstract The fine periodic growth patterns on shell surfaces have been widely used for studies in the ecology and evolution of scallops. Modern X‐ray CT scanners digital cameras can provide high‐resolution image data that contain abundant information such as formation rate, ontogenetic age, life span shellfish organisms. We introduced a novel multiscale processing method based matched filters with Gaussian kernels partial differential equation ( PDE ) hierarchical decomposition to segment...

We propose a comprehensive method using multiscale and multicycle features for retinal vessel image registration with local global strategy. The maps generated by multiwavelet kernels hierarchical decomposition contain segmentation results at varying resolutions in different levels of details. Then the feature composed various combinations cycle structures numbers vertices is extracted. structure consisting bifurcation points, crossover points arteries veins, connected vessels can be found...