Currently,most of the policies for the dynamic demand vehicle routing problem are based on the traditional method for static problems as there is no general method for constructing a real-time optimization policy for ...Currently,most of the policies for the dynamic demand vehicle routing problem are based on the traditional method for static problems as there is no general method for constructing a real-time optimization policy for the case of dynamic demand.Here,a new approach based on a combination of the rules from the static sub-problem to building real-time optimization policy is proposed.Real-time optimization policy is dividing the dynamic problem into a series of static sub-problems along the time axis and then solving the static ones.The static sub-problems’transformation and solution rules include:Division rule,batch rule,objective rule,action rule and algorithm rule,and so on.Different combinations of these rules may constitute a variety of real-time optimization policy.According to this general method,two new policies called flexible G/G/m and flexible D/G/m were developed.The competitive analysis and the simulation results of these two policies proved that both are improvements upon the best existing policy.展开更多
This paper employs the real option theory to develop a pricing model for the transfer of property rights.We list the conditions for the good,intermediate and bad firms respectively,and work out the closed-form solutio...This paper employs the real option theory to develop a pricing model for the transfer of property rights.We list the conditions for the good,intermediate and bad firms respectively,and work out the closed-form solution to the equilibrium transfer price,the optimal transfer timing.Using the comparative static analysis,we find that for good firms the transfer price of the target is increasing in its capital.The higher the capital of the target owns,the faster it will be transferred.For intermediate and bad firms,similar conclusions can be derived.The larger gap between the acquirer＇s size and market power and those of the target,the lower the transfer triggered price.The transfer price goes up as the capital ratio of the acquirer over the target diminishes,while it is decreasing in the amount of the capital the target owns.展开更多
基金Supported by the National Natural Science Foundation of China(71461006,71461007,71761009)Hainan Province Planning Program of Philosophy and Social Science(HNSK(YB)19-06,HNSK(YB)19-11)a Key Program of Hainan Educational Committee(hnky2019ZD-10).
文摘Currently,most of the policies for the dynamic demand vehicle routing problem are based on the traditional method for static problems as there is no general method for constructing a real-time optimization policy for the case of dynamic demand.Here,a new approach based on a combination of the rules from the static sub-problem to building real-time optimization policy is proposed.Real-time optimization policy is dividing the dynamic problem into a series of static sub-problems along the time axis and then solving the static ones.The static sub-problems’transformation and solution rules include:Division rule,batch rule,objective rule,action rule and algorithm rule,and so on.Different combinations of these rules may constitute a variety of real-time optimization policy.According to this general method,two new policies called flexible G/G/m and flexible D/G/m were developed.The competitive analysis and the simulation results of these two policies proved that both are improvements upon the best existing policy.
基金financial supports from National Natural Science Foundation of China(70825003, 70971144 and 71273271)
文摘This paper employs the real option theory to develop a pricing model for the transfer of property rights.We list the conditions for the good,intermediate and bad firms respectively,and work out the closed-form solution to the equilibrium transfer price,the optimal transfer timing.Using the comparative static analysis,we find that for good firms the transfer price of the target is increasing in its capital.The higher the capital of the target owns,the faster it will be transferred.For intermediate and bad firms,similar conclusions can be derived.The larger gap between the acquirer＇s size and market power and those of the target,the lower the transfer triggered price.The transfer price goes up as the capital ratio of the acquirer over the target diminishes,while it is decreasing in the amount of the capital the target owns.
