T carbon emission price (yuan /kg); p represents of fresh merchandise (yuan/kg); represents the demand (kg) of buyer j; q j indicates freshness loss coefficient; is definitely the cost thefresh goods prospects inside the distribution network; Q represents of demand of all (yuan/kg); h represents the demand car client ; section (i, j) within the period h; tijk represents the time for (kg) of k to travel onh dij represents the distance Compound 48/80 MedChemExpress traveled by vehicle k on the road section (i, j) inside the time period h; si indicates the service duration for client i. tijk represents the total time for car k to travel on section (i, j); Lik may be the point in time when car k leaves consumer i; Xijk is actually a variable of 0. Xijk = 1 when the car k travels around the section (i, j), otherwise Xijk = 0; h h xijk is actually a variable of 0. xijk = 1 when the car k travels around the road section (i, j) h inside the time period h, otherwise xijk = 0; yik can be a variable of 0. When car k visits buyer i, yik = 1; otherwise, yik = 0; zk is actually a 0 variable, if vehicle k is made use of zk = 1, otherwise zk = 0.two.2.six. TDGVRPSTW Model Formulation The TDGVRPSTW model is constructed as follows: minC = C1 C2 C3 Among them C1 = (five)i N j N kKXijk Dij zk kKPc ( Tik )i NAppl. Sci. 2021, 11,eight ofC2 =h H i N j N kKh h xijk Eijk C3 = Topic to:kK j N0j pq j y jki Nqi yik Q, k K X0jk 1, k K(six) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17)j NkKyik = 1, i Nj Ni NXijk = Xijk , k Kh Xijk tijk , i N, j N, k K h dijk Xijk , i N, j N, k Ktijk = Dij =h Hh HET0 Xi0k ( Tis si ti0k ) LT0 , i N , k K Tis Tik , i N , k K Lik = Tis si , i N, j N, k K t0i = Tis , i N , k Kj N h xijk 0, 1, Xijk 0, 1, yik 0, 1, zk 0, 1X0jk 1, k KML-SA1 Neuronal Signaling Equation (5) with the objective function represents cost minimization, exactly where C1 represents distribution expense, which includes car transportation price, automobile fixed use expense, and soft time window penalty cost. The time windows penalty expense is defined in Equation (4). C2 represents the cost of carbon emission and C3 represents the cost of freshness loss. Carbon emission cost is defined in Equation (three), and freshness loss expense is defined in Section 2.2.2. Equation (six) represents the load limit of every automobile. Equation (7) indicates that each car or truck can only be made use of as soon as. Equation (eight) indicates that every buyer have to be served only after. Equation (9) indicates that the amount of departing and arriving cars at each and every node needs to be balanced. Equation (ten) represents the relationship amongst the road section driving time as well as the automobile driving time inside the time period. Equation (11) represents the connection amongst the road section distance and also the distance traveled by the automobile in every period. Equation (12) indicates that vehicles returning for the distribution center really should meet the constraints of the distribution center’s functioning time window. Equation (13) represents the connection between the begin time of service plus the arrival time. Equation (14) represents the connection amongst the service commence time, duration, and departure time. Equation (15) indicates the time when the buyer receives the fresh goods. Equation (16) indicates that the customer’s demand is much less than the automobile capacity, and there’s only one particular car to serve them. Equation (17) represents the variable worth constraint. 3. Variable Neighborhood Adaptive Genetic Algorithm three.1. Algorithm Model The adaptive genetic algorithm (AGA), compared with.
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