The Capacitated Facility Location Problem (CFLP) is to locate a set of facilities with capacity constraints, to satisfy at the minimum cost the order-demands of a set of clients. A multi-source version of the problem is considered in which each client can be served by more than one facility. In this paper we present a reformulation of the CFLP based on Mixed Dicut Inequalities, a family of minimum knapsack inequalities of a mixed type, containing both binary and continuous (flow) variables. By aggregating flow variables, any Mixed Dicut Inequality turns into a binary minimum knapsack inequality with a single continuous variable. We will refer to the convex hull of the feasible solutions of this minimum knapsack problem as the Mixed Dicut polytope.
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机译:带有可动短臂的挖掘机等-在后面的旋转范围AB处的面向抓爪的侧面具有松动元件AB DE4218502A在短臂(2)的自由端装有一个工作元件(4),相对于该抓手的对面装有抓爪(6)。工作元件可在悬臂上旋转并且可停在每个相应的位置。抓爪独立于工作元件枢转地安装在其旋转平面上。抓爪被往复驱动w.r.t.工作元素。悬臂在与抓爪相反的一侧具有一个松动元件(8),该元件伸入抓爪的旋转范围内。首选松开元件具有渐缩的切削刃。使用/优点-对于重土工作,应使用在起吊过程中松开挖出的物料的设施。 AN 93396177 TI隔热材料的制造方法-使用额外的工艺均匀混合结合剂和隔热材料,然后用CO2气体冲洗