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Browsing CEGI - Book Chapters by Author "Ana Camanho"
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ItemBenchmarking dos serviços dos hospitais portugueses: uma aplicação de data envelopment analysis( 2014) Castro,RAS ; Portela,CS ; Ana Camanho
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ItemDesenho de promoções diferenciadas em empresas de retalho recorrendo à segmentação de clientes( 2014) Vera Miguéis ; Ana Camanho ; João Falcão Cunha
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ItemEco-efficiency assessment at firm level: An application to the mining sector( 2015) Renata Melo Oliveira ; Ana Camanho ; Andreia ZanellaAssessing 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.
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ItemImproving the robustness of bus schedules using an optimization model( 2015) Hora,J ; Teresa Galvão ; Ana CamanhoThis study pursues the operational improvement of urban transportation services. Non-foreseen events lead to the occurrence of delays, which are further propagated during the daily operations of bus services. This paper applies an optimization model to obtain robust schedules of bus lines. The model builds a new schedule which minimizes delays and anticipations from a set of observations. The decision variables are the slack time to be allocated at each segment of two subsequent stops. The solutions obtained are assessed with two robustness measures: price of robustness (i.e. the deviations from schedule) and the percentage of absorbed delays. The results obtained in a real-world case study (a bus line operating in Porto) are promising.
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ItemModelo de apoio à gestão da pescaria de bivalves com ganchorra no Algarve baseado em dinâmica de sistemas( 2014) Ana Camanho ; Joana Maria Hora ; Manuela Maria Oliveira ; Gaspar,MB