CEGI - Book Chapters

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    Constraint aggregation in non-linear programming models for nesting problems
    ( 2016) Pedro Filipe Rocha ; Gomes,AM ; Rui Pedro Rodrigues ; Toledo,FMB ; Andretta,M
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    Design of retail backroom storage: A research opportunity?
    ( 2015) Maria João Pires ; Pedro Amorim ; Liz,J ; Pratas,J
    The design of retail backroom storage has a great impact on in-store operations, customer service levels and store life-cycle costs. Moreover, backroom storage in modern retail stores is crucial to several functions, such as acting as a buffer against strong demand lifts yielded by an increasing promotional activity, seasonal peak demand and e-commerce activities. Despite having similar functions to a distribution center, backroom storage facilities have particularities that deserve a distinct analysis. In this paper we aim to draw attention to the lack of research about this topic.
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    An operating theater planning decision support system
    ( 2013) Gomes,C ; Sperandio,F ; Peles,A ; José Luís Borges ; António Carvalho Brito ; Bernardo Almada-Lobo
    The operating theater is the biggest hospital budget expenditure. The usage of surgery related resources and its intrinsic planning must be carefully devised in order to achieve better operational performance. However, from long to short term planning, the decision processes inherent to the operating theater are often the subject of empiricism. Moreover, the current hospital information systems available in Portuguese public hospitals lack a decision support system component, which could assist in achieving better planning solutions. This work reports the development of a centralized system for the operating theater planning to support decision-making tasks of surgeons, chief specialty managers, and hospital administration. Its main components concern surgery scheduling, operating theater's resource allocation and performance measurement. The enhancement of the planning processes, the increase of policy compliance, and the overall performance of the operating theater compared to the former methodologies are also discussed. © 2013, IGI Global.
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    Eco-efficiency assessment at firm level: An application to the mining sector
    ( 2015) Renata Melo Oliveira ; Ana Camanho ; Andreia Zanella
    Assessing firms' Eco-efficiency is important to ensure they succeed in creating wealth without compromising the needs of future generations. This work aims to extend the Eco-efficiency concept by including in the assessment new features related to environmental benefits. Eco-efficiency is evaluated using a DEA model specified with a Directional Distance Function. The new methodology proposed in this paper is illustrated with an application to world-class mining companies, whose results and managerial implications are discussed.