Browsing by Author "Jara Díaz, Sergio"
Now showing items 1-20 of 25
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(Springer, 2020)Based on a time-use model with a sound theoretical basis and carefully collected data for Austria, the value of leisure (VoL) for different population segments has been estimated. Through the combination of these results ...
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Are returns to scale with variable network size adequate for transport industry structure analysis? (INST OPERATIONS RESEARCH MANAGEMENT SCIENCES, 2006-08)It is customary to analyze transport industry structure using two indices: (1) economies of density and (2) economies of scale with variable network size. The latter has been defined to analyze the behavior of costs when ...
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(Elsevier, 2017)Time allocation literature coming from all disciplines is reviewed and organized by means of a conceptual classification. A brief account of the origins and evolution of the modeling perspectives on time use research is ...
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(UNIV BATH, JRNL OF TRANSPORT ECON & POL CLAVERTON DOWN, 2010-09)In this journal, van Reeven (2008) develops a model aimed at showing that scale economies on users' time costs would not provide a justification for public transport subsidies. He claims that a profit-maximising operator ...
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(SPRINGER, 2006-06)In order to produce a certain vector of flows over a fixed-size network, a transport firm has to choose, among many other things, a route structure. In accommodating increasing traffic, transport firms will adjust their ...
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(INFORMS, 2008-05)This paper describes the derivation and the econometric calibration of a joint time assignment-mode choice model with a microeconomic foundation, to be applied to the TASTI (time assignment travel and income) database. The ...
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(ELSEVIER, 2004-11)The Spanish electric sector is empirically analysed using a multistage-multiproduct quadratic cost function estimated with data on firms from 1985 to 1996. Economies of both vertical (EVI) and horizontal (EHI) integration ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2008-12)A new approach to calculate the value of leisure is developed and applied. This is derived from a consumer behaviour model that includes goods and activities. A system of time assignment equations is explicitly obtained ...
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(Springer, 2011)Origin-Destination surveys, which are regularly conducted in many cities (to calibrate transport models), contain indirect information on individual time use that can be recovered through the declared trip purpose. ...
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(Springer Science+Business Media, 2014)Using a single line model, it has been shown recently that the presence of a stringent financial constraint induces a less than optimal bus frequency and larger than optimal bus size. This occurs because the constraint ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2011-06)Urban transit demand exhibits peaks in time and space, which can be efficiently served by means of different fleets, increasing frequencies in those groups of stops with larger passenger inflow. In this paper we develop a ...
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(TAYLOR & FRANCIS LTD, 2006-07)A new methodology for the estimation of social values of urban air pollution for project appraisal is proposed. This is performed by using individual perceptions (marginal disutilities) of those who are directly affected ...
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(ELSEVIER, 2008-11)Microeconomic public transport models aimed at maximizing social benefits usually consider demand in an aggregate manner. in this paper we examine the effect of this approach on the optimal values of frequency and vehicle ...
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(Springer, 2016)Users’ perceptions are identified as key elements to understand bicycle use, whose election cannot be explained with usual mobility variables and socio-economic characteristics. A hybrid model is proposed to model the ...
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(SPRINGER, 2005-05)Cargo handling in ports is a multioutput activity, as freight can arrive in many forms such as containers, bulk, rolling stock, or non-containerised general cargo. In this paper, the operation of cargo handling firms in a ...
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(Springer, 2011)We develop a short turning model using demand information from station to station within a single bus line-single period setting, aimed at increasing the service frequency on the more loaded sections to deal with spatial ...
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(Elsevier, 2017)The fleet for surface transit in urban areas - number of buses and vehicle size - is usually determined by the characteristics of demand during the peak period, adjusting frequencies for other periods where those characteristics ...
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(SPRINGER, 2008-12)Port workers services have been usually heavily regulated and reserved exclusively for a special kind of workers, dockworkers, which seems to have been the cause of serious inefficiencies worldwide. During the eighties, ...
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(SPRINGER, 2008-09)The objective of this research is to measure productivity changes in cargo handling operations in Spanish ports. By means of Data Envelopment Analysis and the calculation of the Malmquist indices we have decomposed those ...
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(Blackwell Publishing, 2013)We apply a time assignment model system to estimate and analyse spatial differences in the values of work and leisure for segments of travellers who work in Santiago, Chile, a large, spatially segregated South American ...
