Nowadays the growing concerns about the environment and society in general led companies to invest in a sustainable development. In this way, companies’ design and planning decisions need to encompass simultaneously economic, environmental and social concerns. In addition, considering…
Continue ReadingSupply Chains (SC) have been facing a vast set of events that can endanger their operations and produce permanent damage, which are unknown until its occurrence. This led to an increased awareness of SC Resilience to deal with such SC uncertainty. This work uses a Mixed Integer Linear…
Continue ReadingTaking into account the increase of business competitiveness and legislation compliance faced by industry’s SC, environmental SC problems became a reality that companies have to deal with. This work is developed along this line and proposes a mixed integer linear programming model (MILP)…
Continue ReadingWhile planning to expand its tissue paper business, a Portuguese company aims to explore options regarding the design and planning of its supply chain accounting not only for economic objectives but also environmental and social concerns (the three pillars of sustainability). A multi-objective mixed…
Continue ReadingSustainability is more than ever a central concern when deciding a company’s strategy. Stakeholders are continuously pressuring industries to further reduce their environmental impact. In order to achieve that, it is imperative to look for solutions across all of the company’s operations adopting a supply…
Continue ReadingCompanies are continuously being pressured by governments, customers and NGOs to become environmentally sustainable. In the process industries this is a very important problem since the environmental impacts are often very significant. Although the assessment of the environmental…
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The planning of a supply chain (SC) subject to market demand uncertainty is challenging in regards to defining update mechanisms that deal with demand variations. This study addresses this challenge and proposes a new reorder point update procedure for order-up-to-level (OUTL) policies in…
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This work deals with characterization of the dynamic behavior of a single product supply chain (SC) composed by two levels. It is modeled by Industrial Dynamics concepts developed by Jay Forrester in the 60’s with the objective of determining the information and material flows using a discrete…
Continue ReadingIn the present work a design and planning model with uncertainty in products’ demand is applied to two supply chains (SCs): a traditional forward network and a closed-loop supply chain (CLSC). The objective is to maximize the ENPV and evaluate their resilience towards different types of disruption…
Continue ReadingThis work aims to study the economic impact of incorporating corporate social responsibility issues in supply chain design and planning. A mathematical programming model that allows the optimal design and planning of supply chains is developed. A social benefit indicator is established where the…
Continue ReadingThis paper discusses the current trends in optimization methods for solving planning and scheduling problems in the chemical-pharmaceutical industry. The challenges of this industry and the recent advances in modeling these problems show that optimization methods need to provide highly…
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Within a large set of renewable energies being explored to tackle energy sourcing problems, bioenergy can represent an attractive solution if effectively managed. The supply chain design supported by mathematical programming can be used as a decision support tool to the successful bioenergy…
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Closed-loop supply chain (CLSC) design implies the modelling of the forward and the reverse flows of products in an integrated way. This paper introduces nonlinear dimensioning factors in the design of CLSC and uses ant colony optimization to optimize the design of the supply chain. The…
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