改进平衡运输问题表上作业法中的最优方案判别法则

OPTIMIAZATION SCHEME FOR A DIAGRAM SOLUTION TO THE BALANCE TRANSPORTATION

平衡运输问题数学模型的约束条件Ｘ＿（ｉｊ）≥０，表明只讨论从发车点驶往收车点，不讨论任何形式的“逆向行驶”，但“逆向行驶”在运输实际中往往发生。本文旨在通过改进平衡运输问题表上作业法中的判别法则，解决“逆向行驶”问题，使平衡运输方案真正达到最优化。

Accordhg to the binding condition for the mathematical model of the balance trans-portation,i.e.Xij≥0,there would be the only discussion of the transportation from thestart to the terminal without any form of an Inverse-Travel.But there are frequent oc-curences of Inverse-Travels in the practical transportation. By making improvements inthe discriminating principle for a diagram solution to the balance transportation this thesisaims at solving the problem of Inverse-Travel,and therefore arrives at a true optimalityfor the balance transportation scheme.