Big and beautiful? On non-parametrically measuring scale economies in non-convex technologies

Witte, Kristof De; Marques, Rui Cunha

doi:10.1007/s11123-010-0191-1

Cited by 34 publications

(5 citation statements)

References 31 publications

(38 reference statements)

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“…From the point of view of inputs, the ones most used in different works are included in the IWA's category of indicators of maintenance management operations or quality of service. They are staff cost, operational expenditures, energy, and length of mains [72,73].…”

Section: Inputs and Outputs Used To Analyze The Efficiency Of The Water Supply Managementmentioning

confidence: 99%

Evaluating the Efficiency of Water Distribution Network Sectors Using the DEA-Weight Russell Directional Distance Model: The Case of the City of Valencia (Spain)

2021

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In many cities, sectorization projects of the drinking water distribution network have been implemented. This study provides a methodology to evaluate the efficiency of the sectors of a water distribution network by applying a data envelopment analysis weighted Russell directional distance (DEA-WRDD) model. This non-radial DEA model gives the overall efficiency of each unit of analysis, as well as each input, output, and undesirable output considered in the evaluation. The variables used in the analysis provide a multidisciplinary view: economic factors (covering costs), water quality parameters, and technical aspects. The empirical analysis was performed for the sectors of the water distribution network of the city of Valencia (Spain) for the year 2016. In this particular case, the results showed that approximately half of the sectors were efficient. The efficiency values of each variable indicate that the main challenges (faced by the water distribution company) were the optimization of maintenance costs and the reduction of leaks, both of which have an impact on the quality of the distributed water. So, the purpose of this article is to highlight the usefulness of efficiency analysis to help the decision making of managers of sectorized water distribution networks so that they can optimize the management.

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Section: Inputs and Outputs Used To Analyze The Efficiency Of The Water Supply Managementmentioning

confidence: 99%

Evaluating the Efficiency of Water Distribution Network Sectors Using the DEA-Weight Russell Directional Distance Model: The Case of the City of Valencia (Spain)

2021

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“…The hospital deriving from the "merger" would have lower storage cost than the two hospitals considered separately, with yet the same stock out risk [17,18]. d) Economies of product multiple [19][20][21][22] Any industrial productive process consists of an endless series of physical and chemical transformations, in which the input (except for the first one) is partly or entirely determined by the output of the previous phase.…”

Section: Origins Of Economies Of Scalementioning

confidence: 99%

Determinants of Economies of Scale in Large Businesses—A Survey on UE Listed Firms

Celli¹

2013

AJIBM

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This article aims at giving a contribution to the issue of the determinants of economies of scale in large businesses. After the economies of scale definition, the study identifies and analyzes the economies of cost that, according to most of the well-established literature, contribute jointly to originate the phenomenon at stake. Then, the study analyzes the information collected through specially created questionnaires from a sample of businesses listed on regulated European markets. The aim of the questionnaires is to verify if such companies obtain economies of scale in their productive processes and, if so, to identify which of the cost economies previously analyzed are actually achieved. Finally, the article analyzes data and information obtained through the questionnaires and draws some conclusions. Specifically, the study tries to overcome a one-way and sole interpretation of the economies of scale phenomenon in favour of distinction in economies of scale of II level ("in the strict sense") and economies of scale of I level ("generic").

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“…Its non-convex generalization, the free disposal hull (FDH) model, could be more adequate (De Witte and Marques, 2008) and used to test for the convexity assumption, shedding some light on the RTS characterization issue.…”

Section: The Datamentioning

confidence: 99%

“…(1). This binary constraint ensures that the efficiency score is only affected by observed production units, in contrast to a convex combination of quantities in DEA (De Witte and Marques, 2008).…”

Section: The Datamentioning

confidence: 99%

Efficiency of Brazil's airports: Evidences from bootstrapped DEA and FDH estimates

Wänke

2012

Journal of Air Transport Management

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Big and beautiful? On non-parametrically measuring scale economies in non-convex technologies

Cited by 34 publications

References 31 publications

Evaluating the Efficiency of Water Distribution Network Sectors Using the DEA-Weight Russell Directional Distance Model: The Case of the City of Valencia (Spain)

Evaluating the Efficiency of Water Distribution Network Sectors Using the DEA-Weight Russell Directional Distance Model: The Case of the City of Valencia (Spain)

Determinants of Economies of Scale in Large Businesses—A Survey on UE Listed Firms

Efficiency of Brazil's airports: Evidences from bootstrapped DEA and FDH estimates

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