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Ensuring service levels in routing problems with time windows and stochastic travel times

Ehmke, Jan Fabian; Campbell, Ann Melissa; Urban, Timothy L. - In: European Journal of Operational Research 240 (2015) 2, pp. 539-550

In the stochastic variant of the vehicle routing problem with time windows, known as the SVRPTW, travel times are assumed to be stochastic. In our chance-constrained approach to the problem, restrictions are placed on the probability that individual time window constraints are violated, while...

Persistent link: https://www.econbiz.de/10011097676

A 4D-sequencing approach for air traffic management

Prot, D.; Rapine, C.; Constans, S.; Fondacci, R. - In: European Journal of Operational Research 237 (2014) 2, pp. 411-425

The current air traffic system is forecasted to face strong challenges due to the continuous increase in air traffic demand. Hence, there is a need for new types of organization permitting a more efficient air traffic management, with both a high capacity and a high level of safety, and possibly...

Persistent link: https://www.econbiz.de/10011097819

Freight railway operator timetabling and engine scheduling

Bach, Lukas; Gendreau, Michel; Wøhlk, Sanne - In: European Journal of Operational Research 241 (2015) 2, pp. 309-319

In this paper we consider timetable design at a European freight railway operator. The timetable is designed by choosing the time of service for customer unit train demands among a set of discrete points. These discrete points are all found within the a time-window. The objective of the model is...

Persistent link: https://www.econbiz.de/10011077620

Serial batching scheduling of deteriorating jobs in a two-stage supply chain to minimize the makespan

Pei, Jun; Pardalos, Panos M.; Liu, Xinbao; Fan, Wenjuan; … - In: European Journal of Operational Research 244 (2015) 1, pp. 13-25

This paper investigates the coordinated scheduling problem of production and transportation in a two-stage supply chain … delivered to a customer by a single vehicle with limited capacity during the transportation stage, and the vehicle can only … model with a buffer for storing the processed batches before transportation, we develop an optimal algorithm to solve it …

Persistent link: https://www.econbiz.de/10011209376

Robust bunker management for liner shipping networks

Wang, Shuaian; Meng, Qiang - In: European Journal of Operational Research 243 (2015) 3, pp. 789-797

This paper examines the sailing speed of containerships and refueling of bunker in a liner shipping network while considering that the real speed may deviate from the planned one. It develops a mixed-integer nonlinear optimization model to minimize the total cost consisting of ship cost, bunker...

Persistent link: https://www.econbiz.de/10011209378

Hybrid algorithms for the vehicle routing problem with clustered backhauls and 3D loading constraints

Bortfeldt, Andreas; Hahn, Thomas; Männel, Dirk; … - In: European Journal of Operational Research 243 (2015) 1, pp. 82-96

In this paper, we extend the vehicle routing problem with clustered backhauls (VRPCB) to an integrated routing and three-dimensional loading problem, called VRPCB with 3D loading constraints (3L-VRPCB). In the VRPCB each customer is either a linehaul or a backhaul customer and in each route all...

Persistent link: https://www.econbiz.de/10011190753

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

The Share-a-Ride Problem: People and parcels sharing taxis

Li, Baoxiang; Krushinsky, Dmitry; Reijers, Hajo A.; Van … - In: European Journal of Operational Research 238 (2014) 1, pp. 31-40

New city logistics approaches are needed to ensure efficient urban mobility for both people and goods. Usually, these are handled independently in dedicated networks. This paper considers conceptual and mathematical models in which people and parcels are handled in an integrated way by the same...

Persistent link: https://www.econbiz.de/10010776938

Distribution-free vessel deployment for liner shipping

Ng, ManWo - In: European Journal of Operational Research 238 (2014) 3, pp. 858-862

One important problem faced by the liner shipping industry is the fleet deployment problem. In this problem, the number and type of vessels to be assigned to the various shipping routes need to be determined, in such a way that profit is maximized, while at the same time ensuring that (most of...

Persistent link: https://www.econbiz.de/10010785319

Transport operations in container terminals: Literature overview, trends, research directions and classification scheme

Carlo, Héctor J.; Vis, Iris F.A.; Roodbergen, Kees Jan - In: European Journal of Operational Research 236 (2014) 1, pp. 1-13

Internal transport operations connect the seaside, yard side, and landside processes at container terminals. This paper presents an in-depth overview of transport operations and the material handling equipment used, highlights current industry trends and developments, and proposes a new...

Persistent link: https://www.econbiz.de/10010871065