广义D运输问题

D运输问题是一类要求将货物在某一个时间以前如数运抵目的地的运输问题,比如节日物资的运输问题.基于物流管理的需要,提出了广义D运输问题.广义D运输问题是各个销地对货物的运抵时间有不同要求,即各个销地对于货物的需求时间不一定相同的一般情况.建立了广义D运输问题的数学模型,引入了可实施解、满意解、最优解等概念,给出了求解方法和一个计算例子.

Generalized D-Transportation Problems

D-transportation problem is the transportation problem which requires all the demanded goods must be transported to all destinations before a given time. Based on the logistics management, the author introduces the generalized D-transportation problem. The generalized D-transportation problem is a new problem which requires all the demanded goods must be transported to each destination according to their demands of time. It considers the general case that the destinations have different demands of time. This paper establishes the mathematical model of the generalized D-transportation problems, and introduces some theories, such as implementable solution, satisfactory solution, and optimal solution and so on. Finally, an example is provided to illustrate the proposed algorithm for solving D-transportation problems.