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- Operational research models in warehouse design and planningPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeThe design and operation of a warehouse involve many challenging decision problems. In this paper, a literature review on warehousing models is presented. Authors start with a hierarchy of decision problems encountered in setting up warehouse design and planning processes. Next, some operational research decision models and solution algorithms supporting decision making at each discussed level are presented. The aim is to link academic researchers and warehouse practitioners, explaining what planning models and methods are currently available for warehouse design and planning, and what are the future research opportunities.
- An optimisation model for the warehouse design and planning problemPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeIn spite of the importance of warehouses in the field of the supply chain management, there is not a single decision model that integrates all the decisions that concerns the warehouse design and planning problem. In this paper we discuss a mathematical programming model aiming to support some warehouse management and inventory decisions. Our aim is to address the complexity related to the modeling of the warehouse design and planning problem. In particular an optimisation model is presented to capture the trade-offs among both inventory and warehouse costs in order to achieve global optimal design satisfying throughput requirements.
- An integrated approach for warehouse design and planningPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeWarehouse design and planning is a great challenge in the field of Supply Chain Management. Inventory level management, warehouse design and operations, and customers’ requirements are examples of important challenges in this context. Throughout this work we discuss a mathematical model aiming to support some warehouse management decisions and inventory decisions. Our aim is to show model’s potentialities and weaknesses when applied to real world problems and to identify challenging research opportunities for developing more global warehouse decision support models to fill the gap between researchers and warehouse practitioners.
- Operational research models in warehouse design and planningPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeThe design and operation of a warehouse involve many challenging decision problems. In this paper, a literature review on warehousing models is presented. Authors start with a hierarchy of decision problems encountered in setting up warehouse design and planning processes. Next, some operational research decision models and solution algorithms supporting decision making at each discussed level are presented. The aim is to link academic researchers and warehouse practitioners, explaining what planning models and methods are currently available for warehouse design and planning, and what are the future research opportunities.
- An integrated model for warehouse design and planningPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeWarehouse design is a field of interest for both practitioners and researchers that have attracted a lot of research attention in the last years. Nevertheless it remains a complex task with very few general models that capture the existing and often conflicting trade-offs of a warehouse system. Literature surveys show that most research efforts have been devoted to solve limited and well-defined problems rather than integrated ones. This is not surprising since developing an integrated model is more difficult to analyse and treat analytically. In this talk we present and discuss a high-level model that integrates some decisions involved in warehouse design and planning. Our aim is to analyse the value of integrating warehouse decisions showing that additional savings can be achieved.
- Simulation in the warehouse design and management context: a surveyPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeThe dynamic character of today’s competitive markets forces organizations to an incessant reassessment in an effort to respond to the continuous challenges. Warehouses as an important link in most supply chains should be an integral part of this effort. Hence, warehouses must continually be revaluated to ensure that they are consistent with both the market’s demands and the management’s strategies. The aim of this paper is to survey how simulation technique could represent one decision support system in the warehousing context.
- Integrated models for warehouse design and planningPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeMarket competition requires continuous improvement in the design and operation of supply chains. Warehouse management is a field of interest for both practitioners and researchers and involves material, information and financial flow management in a highly dynamic environment. Designing and planning a warehouse (distribution centre) involve different levels of decision-making, with high levels of interactions and interdependencies. So, to ensure an efficient performance of the warehouse, decisions having a significant impact on each other must be integrated. The aim of this work is to develop integrated models capable of capture the complex tradeoffs of a warehouse system.
- Warehouse design and product assignment and allocation: a mathematical programming modelPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeWarehouses can be considered one of the most important nodes in supply chains. The dynamic nature of today’s markets compels organizations to an incessant reassessment in an effort to respond to continuous challenges. Therefore warehouses must be continually re-evaluated to ensure that they are consistent with both market’s demands and management’s strategies. In this paper we discuss a mathematical programming model aiming to support product assignment and allocation to the functional areas as well as the size of each area. In particular a large mixed-integer programming model (MILP) is presented to capture the trade-offs among the different warehouse costs in order to achieve global optimal design satisfying throughput requirements.
- An optimisation model for the warehouse design and planning problemPublication . Geraldes, Carla A.S.; Carvalho, Sameiro; Pereira, GuilhermeIn spite of the importance of warehouses in the field of the supply chain management, there is not a single decision model that integrates all the decisions that concerns the warehouse design and planning problem. A number of warehouse decision support models have been proposed in the literature but considerable difficulties in applying these models still remain, due to the large amount of information to be processed and to the large number of possible alternatives. In this paper we discuss a mathematical programming model aiming to support some warehouse management and inventory decisions. Our aim is to address the complexity related to the modeling of the warehouse design and planning problem. In particular a large mixed-integer nonlinear programing model (MINLP) is presented to capture the trade-offs among both inventory and warehouse costs in order to achieve global optimal design satisfying throughput requirements.