| In recent years,with the frequent occurrence and frequent occurrence of a series of natural disasters such as earthquakes,landslides,mudslides,rain and snow,China has faced enormous challenges in the deployment of emergency resources for natural disaster relief.On the one hand,emergency logistics infrastructure such as vehicles and oil materials,as one of the important support and "constraints" of the emergency logistics system,plays a pivotal role in the emergency resource allocation process,and the mismatch between supply and demand will seriously affect.The implementation efficiency of emergency resource allocation will delay the progress of rescue.On the other hand,the emergency logistics demand under the natural disaster rescue is more and more complex,and the form shows more complex network features,which is reflected in the emergency logistics integration in the integration of supply chain network.It is necessary to ensure that the supply and demand of vehicles and oils are matched,and the difficulty in making decision-making optimization for the quantity of materials,the number of vehicles and the path selection under complex network conditions is further increased.Therefore,it is especially important to establish an emergency resource allocation network equilibrium model considering supply and demand matching for analysis and decision making.Firstly,this paper refines the emergency resource allocation decision-making problem on the basis of predecessors,comprehensively considers the impact of material allocation cost,vehicle deployment cost and other factors on emergency resource allocation and path optimization,and constructs material resource flow and vehicle resource flow decision-making variables.The network allocation model for emergency resource allocation under the influence.Secondly,this paper takes the emergency resource allocation decision problem under the complex network considering the matching of supply and demand as the research perspective,and considers the requirements of the most matching of supply and demand of vehicles and oil materials,as well as the emergency resource allocation consisting of material allocation cost and vehicle deployment cost.The goal of minimum cost,based on the different demand conditions of the disaster site and the different characteristics and demand properties of infrastructure resources such as vehicle resources and oil resources in the emergency logistics system,establishes a single decision variable close to reality and the vehicle supply and demand closeness with constraints The function,multi-decision variable and unconstrained oil supply and demand difference degree function show the degree of supply and demand matching from different angles.On this basis,the emergency resource allocation network equilibrium model considering vehicle supply and demand matching,the emergency resource allocation network equilibrium model considering oil supply and demand matching are constructed respectively,and the optimal allocation strategy of emergency resources considering supply and demand matching is discussed.Based on the theory of super network,supply and demand matching,streamline optimization theory and variational inequality theory,combined with multi-objective optimization,this paper studies the network allocation model of emergency resource allocation considering supply and demand matching,combined with"8·8 Jiuzhaigou earthquake".The application research and sensitivity analysis for the case solve the practical problem of ensuring the optimization of emergency resource allocation decision while ensuring the matching of supply and demand of vehicles(oil)under complex network conditions.Through the projection shrinkage algorithm,it is theoretically and practically meaningful to solve the equilibrium solution of the optimal emergency material allocation number and vehicle allocation quantity of the emergency resource allocation network equilibrium model considering supply and demand matching.The main research work of this paper includes the following aspects:(1)Refining the problem of emergency resource allocation decision-making,based on the existing research,comprehensively consider the impact of material allocation cost,vehicle deployment cost and other factors on emergency resource allocation and path optimization,and construct material resource flow and vehicle resource flow decision-making.The emergency resource allocation network equilibrium model under the joint influence of variables.This "cargo" and "car" separation mode can more comprehensively optimize and analyze emergency resource allocation decision-making problems.(2)Aiming at the characteristics and demand nature of infrastructure resources such as vehicle resources and oil resources in the emergency logistics system,we constructed a single decision-making variable close to reality and constrained vehicle supply and demand similarity function,multi-decision variables and unconstrained oil supply and demand differences.Degree function.For the similarity function,the closer the function value is to 1,the greater the matching between supply and demand.For the difference degree function,the closer the function value is to 0,the greater the matching between supply and demand.The degree of supply-demand matching is expressed and measured from different angles,and the"measurement of supply and demand" metrics suitable for natural disaster background is established.(3)The emergency resource allocation network equilibrium model considering vehicle supply and demand matching,the emergency resource allocation network equilibrium model considering oil supply and demand matching are constructed respectively,and the channel congestion degree coefficient,vehicle loading rate,emergency capacity limitation,vehicle deployment cost,fuel demand,The impact of a series of factors,such as the weight optimization goal and the supply-demand matching optimization goal,and the stochastic demand change of the disaster site,on the network equilibrium result.Taking "8·8 Jiuzhaigou Earthquake" as an example,the optimal allocation strategy of emergency resources in the context of similar natural disasters is obtained,which provides a complete set of theoretical analysis tools for government/enterprise decision-making optimization in emergency resource allocation.significance.(4)Based on the projection shrinkage algorithm,the numerical examples in the applied research are solved.The MatlabR2014a is used to perform thousands of or even thousands of iterative calculations.The Origin2018 performs data analysis to verify the validity of the model and draws a series of important conclusions.Provide scientific reference and policy recommendations for optimal decision making for emergency resource allocation. |
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