Sinnathamby G.,Aalto University |
Gustavsson H.,Aalto University |
Korkiala-Tanttu L.,Aalto University |
Cervera C.P.,Fundacion Valenciaport
Environmental Geotechnics | Year: 2015
This paper presents the results of a case study where various methods were used to estimate the frost heave and the thaw settlement of a frozen ground beneath the ice rink facility in Myllypuro, Helsinki. Several undisturbed soil samples were taken from the proximity of the site and characterised for frost susceptibility. Laboratory frost-cell tests were conducted on soil samples from different depths to estimate the possible future frost heave and thaw settlements of the frozen ground. Frost heave and thaw settlement were also calculated from various empirical formulations and compared with the estimations based on the laboratory test results. The thaw settlement estimations from the frost-cell test results was 1•84m (~28% of the total frost depth), which was similar to the results from the empirical formulations. The calculated frost depth and frost heave at the end of 30 years were 6•39m and 622mm respectively. This was in good agreement with the on-site measurements taken immediately before the renovation, after about 30 years of continuous operation. © ICE Publishing: All rights reserved.
Escamilla-Navarro L.,Fundacion Valenciaport |
Garcia-Menendez L.,University of Valencia |
Perez-Garcia E.,Fundacion Valenciaport
Maritime Policy and Management | Year: 2010
This article aims to contribute to improving maritime trade data by analysing the possibility of integrating in a single enlarged databank two different databases: the Spanish foreign trade and maritime transport datasets. The methodology adopted consisted of studying the primary sources providing data compiled in the foreign trade and maritime traffic databases, analysing the electronic processes used by informants and data collectors and examining the linkages between the different electronic messages involved. Once the links between the trade and sea transport documents and electronic messages were found, a solution for integrating both databases was envisaged. The main outcome is a new proposed database including information on all export and import operations transported by sea. Compiled data for each record would include variables describing the trade operation (commodity, weight and value of the traded goods amongst other fields) as well as information on the transport route followed by each specific export or import flow. The new database would allow port planners to analyse traffic to and from ports' hinterlands without resorting to estimations, Customs could correct errors affecting the Spanish foreign trade statistics and transport policy-makers, academics and practitioners would benefit from wider-ranging higher quality statistics. © 2010 Taylor & Francis.
Juan C.,University of Valencia |
Olmos F.,University of Valencia |
Perez E.,Fundacion Valenciaport
Engineering Economist | Year: 2016
The implementation of Motorways of the Sea (MoS) within the framework of European Union aid programs experiences a period of relative stagnation. This article analyzes the suitability of current short-term nonrepayable subsidy policy and develops a decision support system (DSS) that allows a medium- and long-term feasibility analysis of MoS proposals. One significant conclusion drawn from the application of the proposed DSS to a prototypical high-frequency MoS provides that the period of initial losses prior to achievement of both modal shift and accounting profits might last 10 years. Moreover, the entire duration of the period that includes prior objectives as well as the recovering of initial losses might reach 25 years. Therefore, existing schemes of public–private collaboration should be redefined. To this end, the proposed DSS also contributes to envisioning a spectrum of possibilities for private–public collaborations schemes, as opposed to public–private dichotomy of partnerships. © 2016 Institute of Industrial Engineers
Palacio A.,University of Oviedo |
Adenso-Diaz B.,University of Oviedo |
Lozano S.,University of Seville |
Furio S.,Fundacion ValenciaPort
Networks and Spatial Economics | Year: 2013
Since the location of container depots has an impact on maritime logistics costs, the container depot location problem is usually treated as a cost minimization problem. But the location of the container depots also has a serious environmental impact, given the heavy traffic load inherent to these operations and the setting up and maintenance of the depots. In this paper a bicriteria optimization model for designing a network of depots in a hinterland is proposed and its application to the Port of Valencia, Spain is reported. The two objectives considered are (1) the total cost of the network and (2) the environmental impact of the container depots and the transport operations associated with them. An Analytic Hierarchy Process (AHP) has been used to determine the environmental impact of each depot, and the ε-constraint method to obtain the optimal Pareto set of the problem. The results clearly show that trade-offs are possible between both objective functions and that, for our case study, the proposed approach can obtain solutions that are more cost-effective and have lower environmental impacts than those currently existing. © 2013 Springer Science+Business Media New York.
Lozano S.,Polytechnic University of Valencia |
Gutierrez E.,Polytechnic University of Valencia |
Furio S.,Fundacion Valenciaport |
Salmeron J.L.,Pablo De Olavide University
International Conference on Harbour, Maritime and Multimodal Logistics Modelling and Simulation | Year: 2012
In this research a Network Data Envelopment Analysis (DEA) approach is proposed to assess the efficiency of a number of Container Shipping Lines (CSLs). Two stages are considered: one with labour, number of ships and fleet capacity as inputs, and container throughput handled as output and a second stage with the latter as input and turnover as output. A non-oriented Slacks- Based Measure of efficiency (SBM) metric is used. The approach is compared with the conventional singleprocess DEA. An increase in the discrimination power of the method is obtained by the use of the network DEA approach. In addition, the proposed approach not only computes an overall efficiency score for each CSL but also rates the relative efficiency of its two stages.
Marquez-Ramos L.,Jaume I University |
Martinez-Zarzoso I.,Jaume I University |
Martinez-Zarzoso I.,University of Gottingen |
Perez-Garcia E.,Fundacion Valenciaport |
Wilmsmeier G.,Napier University
Networks and Spatial Economics | Year: 2011
This paper aims at investigating the relationship between maritime trade and maritime freight rates at sectoral level. These rates and their effect on international trade will be estimated using highly disaggregated data of shipments from five Spanish ports to seventeen destinations, 78.34% of the tonnage exported by Spain. The paper focuses on the effect of maritime networks, services structure and port infrastructure variables on maritime freight rates. The relationship between freight rates and trade is then analysed by applying a gravity model for sectoral exports. We investigate the endogeneity of the trade and freight rate variables by estimating both equations by using instrumental variables methods. The main findings of this study should contribute significantly in explaining the variability of maritime freight rates and to quantifying the impact of maritime freight rates in maritime trade. © 2010 The Author(s).
Saz-Salazar S.D.,University of Valencia |
Garcia-Menendez L.,University of Valencia |
Feo-Valero M.,Fundacion Valenciaport
Ocean and Coastal Management | Year: 2012
In order to support effective policy-making, this research is aimed to emphasise the need of measuring the negative impact - or external costs - resulting from port growth. Considering the non-market nature of these external costs, a critical appraisal of the Contingent Valuation method is made paying special attention to the problem of hypothetical bias and the suitability of a willingness to accept (WTA) scenario for damage assessment. Finally, the results of a case study, conducted in Valencia (Spain), are presented with the intention of paving the way for future research in this specific context of port growth and negative externalities. In particular, results indicate that the average compensation required is about €100 per family negatively affected. © 2012 Elsevier Ltd.