Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/43268
Title: On the proper modelling of multioutput port cargo handling costs
Authors: Jara-Díaz, Sergio
Tovar de la Fe, Beatriz Erasmi 
Trujillo Castellano, Lourdes 
UNESCO Clasification: 531212 Transportes y comunicaciones
Keywords: Puertos
Transporte marítimo
Issue Date: 2008
Publisher: 0003-6846
Journal: Applied economics (Print) 
Abstract: Cargo handling activities involve various heterogeneous outputs, e.g. general cargo, containers, dry and liquid bulk and so on. These activities in ports, however, have been usually analysed using aggregate descriptions of output such as total tons moved. The main purpose of this article is to show that ignoring this heterogeneity may lead to two types of problems: (i) the underestimation of the relevance of key dimensions (i.e. marginal costs per product and economies of scope) and (ii) a bias in the estimates of the relevance of other dimensions (economies of scale). To do so, we rely on a unique new dataset on three cargo handling firms operating in a Spanish port between 1991 and 1999. We use it to estimate both a multi-output cost for these three operators, as well as an aggregate cost function. The policy conclusions are derived from an explicit and detailed comparison of these two sets of estimates.
URI: http://hdl.handle.net/10553/43268
ISSN: 0003-6846
DOI: 10.1080/00036840600892902
Source: Applied Economics[ISSN 0003-6846],v. 40, p. 1699-1705
Appears in Collections:Artículos
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