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Mixed integer and heuristics model for the inventory routing problem in fuel delivery

Vidović, Milorad; Popović, Dražen; Ratković, Branislava - In: International Journal of Production Economics 147 (2014) PC, pp. 593-604

with and without fleet size costs, to observe the impact of these costs on the solutions that are obtained. The heuristics … model is based on constructive heuristics with two Variable Neighborhood Descent (VND) search types: a local intra … good quality solutions suggests the use of the proposed heuristics on problems with realistic dimensions where the MIP …

Persistent link: https://www.econbiz.de/10011043361

Lower and upper bounds for location-arc routing problems with vehicle capacity constraints

Doulabi, Hashemi; Hossein, Seyed; Seifi, Abbas - In: European Journal of Operational Research 224 (2013) 1, pp. 189-208

proposed algorithm can find high quality solutions. We also show that the potential cost saving resulting from adding location …

Persistent link: https://www.econbiz.de/10010580811

LS-LIB: a library of reformulations, cut separation algorithms and primal heuristics in a high-level modeling language for solving MIP production planning problems

POCHET, Yves; VAN VYVE, Mathieu; WOLSEY, Laurence A. - Center for Operations Research and Econometrics (CORE), … - 2005

generation, and heuristics to find good feasible solutions quickly. The user must provide an initial formulation of his problem …

Persistent link: https://www.econbiz.de/10005042884

The storage location assignment problem for outbound containers in a maritime terminal

Chen, Lu; Lu, Zhiqiang - In: International Journal of Production Economics 135 (2012) 1, pp. 73-80

algorithm is applied to solve the problem in the second stage. Experimental results show that the proposed approach is effective …

Persistent link: https://www.econbiz.de/10010597246

Enriching the Tactical Network Design of Express Service Carriers with Fleet Scheduling Characteristics

Fleuren, Hein; van Dam, Edwin Robert; Meuffels, W.J.M.; … - Tilburg University, Center for Economic Research - 2009

Express service carriers provide time-guaranteed deliveries of parcels via a network consisting of nodes and hubs. In this, nodes take care of the collection and delivery of parcels, and hubs have the function to consolidate parcels in between the nodes. The tactical network design problem...

Persistent link: https://www.econbiz.de/10011096215

TWO-PHASE HEURISTIC FOR CAPACITATED DEGREE CONSTRAINED MIN-SUM ARBORESCENCE

Kawatra, Rakesh - International Institute of Social and Economic Sciences - 2014

We present a two-phase heuristic for designing a capacitated degree constrained min sum arborescence. For a given directed graph G(V,E) where V={0, 1,…,n} with nonnegative costs Cij for each (i,j)

Persistent link: https://www.econbiz.de/10011210137

Consolidating home meal delivery with limited operational disruption

Hewitt, Mike; Nowak, Maciek; Gala, Leo - In: European Journal of Operational Research 243 (2015) 1, pp. 281-291

Non-profit organizations like the Meals On Wheels (MOW) association of America prepare and deliver meals, typically daily, to approximately one million homebound individuals in the United States alone. However, many MOW agencies are facing a steadily increasing number of clients requesting meal...

Persistent link: https://www.econbiz.de/10011190764

Improved bounds for the traveling umpire problem: A stronger formulation and a relax-and-fix heuristic

de Oliveira, Lucas; Souza, Cid C. de; Yunes, Tallys - In: European Journal of Operational Research 236 (2014) 2, pp. 592-600

Given a double round-robin tournament, the traveling umpire problem (TUP) consists of determining which games will be handled by each one of several umpire crews during the tournament. The objective is to minimize the total distance traveled by the umpires, while respecting constraints that...

Persistent link: https://www.econbiz.de/10010871077

Using truck-inventory-cost to obtain solutions to multi-period logistics models

Ali, Agha Iqbal; O'Connor, Debra J. - In: International Journal of Production Economics 143 (2013) 1, pp. 144-150

The antithetic opposition between the cost of inventory and the fixed cost of transportation, which leads to multiple alternate near-optima, can be a primary contributor to the computational intractability of the mixed integer program for a two-echelon multi-period distribution system. To...

Persistent link: https://www.econbiz.de/10010869098

A mathematical formulation and complexity considerations for the blocks relocation problem

Caserta, Marco; Schwarze, Silvia; Voß, Stefan - In: European Journal of Operational Research 219 (2012) 1, pp. 96-104

The blocks relocation problem (BRP) may be defined as follows: given a set of homogeneous blocks stored in a two-dimensional stock, which relocations are necessary to retrieve the blocks from the stock in a predefined order while minimizing the number of those relocations? In this paper, we...

Persistent link: https://www.econbiz.de/10011052786