This paper studies a continuous Bertrand duopoly game model with two-stage delay. Our aim is to investigate the influence of delay and weight on complex dynamic characteristics system. We obtain bifurcation point system respect parameter by calculating. In addition, properties are simulated power spectrum, attractor, diagram, largest Lyapunov exponent, 3D surface chart, 4D Cubic Chart, 2D diagram. The results show that stability depends weight, in order maintain price ensure firm profit,...

Based on the carbon emission policy and low-carbon capacity sharing, this paper studies optimal product pricing matching strategies of competition cooperation between two companies in a duopoly market. And with or without sharing are discussed. In addition, differential game model based constraints, delayed decision-making is established. We also study evolution enterprises from initial state to equilibrium state. Besides, influence decision variables, price adjustment speed weights...

Abstract The development of COVID-19 vaccine is highly concerned by all countries in the world. So far, many kinds vaccines have entered phase III clinical trial. However, it difficult to deliver efficiently and safely areas affected epidemic. This paper focuses on transportation a supply chain model composed one distributor retailer (clinic or hospital), which procures from manufacturer then resells them retailer. Distributor detects activity level vaccines, responsible for vaccines....

ABSTRACT This paper examines a two‐tier supply chain system where the manufacturer leads by managing aftersales service, and retailer follows handling presales service. To address manufacturer's capital constraints, we develop three game‐theoretic models: model without another with external financing under yet internal constraints. We identify optimal strategies across these scenarios through comparative analysis. The findings reveal that does not improve level of service provided retailer....

This paper constructs a continuous dual-channel closed-loop supply chain (DCLSC) model with delayed decision under government intervention. The existence conditions of the local stability equilibrium point are discussed. We analyze influence delay parameters, adjustment speed wholesale price, recovery rate waste products, direct carbon quota subsidy, and tax on complexity by using bifurcation diagram, entropy attractor, time series diagram so on. Besides, feedback control method is adopted...

A delayed SEIRS-V model on the transmission of worms in a wireless sensor network is considered. Choosing delay as bifurcation parameter, existence Hopf investigated. Furthermore, we use normal form method and center manifold theorem to determine direction stability bifurcated periodic solutions. Finally, some numerical simulations are presented verify theoretical results.

Research on the output game behavior of oligopoly has greatly advanced in recent years. But many unknowns remain, particularly influence consumers’ willingness to buy green products game. This paper constructs a triopoly model with multiple delays competition products. The parameters stability and complexity system is studied by analyzing existence local asymptotic equilibrium point. It found that loses increases if delay exceed certain range. In unstable or chaotic market, decisions will be...

In this paper, a duopoly game model with double delays in hydropower market is established, and the research focus on influence of time delay parameter complexity system. Firstly, we established for enterprises considering both current historical output when making decisions. Secondly, existence stability Hopf bifurcation are analyzed, conditions main conclusions given. Thirdly, numerical simulation analysis carried out to verify theoretical analysis. The effect system simulated by diagram,...

Purpose The purpose of this study is to analyze the short-term development pattern and long-term trend digital supply chain. Design/methodology/approach This uses combination game evolutionary theory. Findings suggest that irrational decisions can make path chain complex unpredictable. Originality/value proposes an model for provide good guidance digitalization process enterprises.

Taking the carbon emissions per unit product as standard to measure low-carbon technology level of enterprise, this article analyzed how supplier enterprises realize production and achieve a win-win situation for both supply demand through sharing research development. Based on positive effect demand, we studied optimal pricing strategy in under Stackelberg game 3 conditions (i.e., without development or sharing, with but no sharing). We also drew comparative analysis price, level, profit...

Due to the important role of vaccines in prevention global epidemics, this paper focuses on a vaccine transportation supply chain composed one distributor and retailer. Based assumption that decision-maker does not make decision instantaneously, we present decision-making time-delay model. Firstly, captured some sufficient conditions delay-induced bifurcation for model by regarding different combinations delay periods as parameters analyzed how speed adjustment or retailer affects critical...

In this paper, a four-dimensional model of energy supply–demand with two-delay is built. The interactions among demand east China, supply west China and the utilization renewable in are delayed model. We discuss stability system affected by parameters existence Hopf bifurcation at equilibrium point from two aspects: single delay two-delay. complexity demonstrated through diagram, Poincare section plot, entropy etc. numerical simulation. simulation results show that beyond stable region will...

In this paper, we investigate a supply chain consisting of an OEM (i.e., original equipment manufacturer) and CM (contract manufacturer), in which the decides design effort level marketing level, makes decision on product manufacturing level. We establish three-dimensional discrete dynamic model with time delay. Firstly, sufficient conditions for Neimark–Sacker bifurcation are obtained by using different combinations delay periods as parameters, effect adjustment speeds variables system...

Chaotic dynamics theory provides an analytical method for securities price in a stock. In this paper the Shanghai Composite Index is selected to analyze nonlinear characteristics of fluctuations. Through processing data with logarithmic-eliminating trend method, chaotic attractor Stock computed. The results show that Chinese market obvious system.

In response to the decision-making problem of a secondary supply chain system composed manufacturers and retailers, optimal strategy master-slave game was studied, considering carbon emissions reduction. We compared analyzed differences in strategies with without coordination mechanisms, explored impact sensitivity on strategy. Research has shown that profit retailers under mechanisms is greater than mechanisms; Wholesale prices, reduction levels, retail manufacturer profits are all...

In order to meet consumers' demand for green products, it is necessary manufacturers improve the greenness of their products during production process. On basis considering strategy evolution behavior multi-period game model was studied, and stability complexity system explored. The domain given, effects product market adjustment speed on were analyzed. Research has shown that there are scope limitations strategies, positively correlated with price sensitivity coefficient, while negatively...

The ideological and political education of students is an important link in talent cultivation. By analyzing the foundation role tutors carrying out education, exploring difficulties process graduate providing feasible implementation paths, we aim to assist their comprehensive development.

In order to reduce the carbon emissions of manufacturers and retailers in their business activities, emission limits must be set for respectively, they make favorable decisions within limits. This paper will focus on a two-level supply chain system composed single manufacturer retailer, explore optimal wholesale price, retail profit under four scenarios: neither is constrained by quotas, only retailer both are constructing Lagrange functions. Comparative analysis conducted. Research has...

Stable software is used to make the empirical research for return rate in Shanghai and Shenzhen stock market this paper. The results show that returns distribution has an obvious peak fat tail fractal characteristics. traditional normal been very difficult describe phenomenon, but stable able deal with kind of problem.