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Santander, Spain

University of Cantabria , is a public university located in Santander, Torrelavega and Comillas in Cantabria, Spain. It was founded in 1972 and is organized in 15 schools and colleges.It was selected as Campus of International Excellence by the Government of Spain in 2009. The UC is part, as a founding member, of the Group 9 of Spanish Universities , created in 1997 with the aim of promoting collaboration between academic institutions.The University of Cantabria first appeared in the Academic Ranking of World Universities in 2013 in the range of 151-200 best universities in the world in the field of Physics. Wikipedia.

San Cristobal J.R.,University of Cantabria
Renewable Energy | Year: 2011

The growing concern in the negative effects of fossil fuels on the environment has forced a more intensive use of Renewable Energy sources which are considered an important solution to the large atmospheric pollution caused from fossil fuel combustion. In the electricity-generating industry, due to the high costs associated with the construction and operation of plants and the regulations that enforce productivity evaluations, efficiency is a key managerial concept. DEA is a non-parametric method which produces detailed information on the efficiency of a unit, to be measured without any assumptions regarding the functional form of the production function. In this paper, the efficiency of 13 Renewable Energy technologies is evaluated through a Multiple Criteria Data Envelopment Analysis (MCDEA) model. Two additional criterion, the minsum and minimax criterion, are included in the model which are the most restrictive than that defined in the classical DEA. The results show that the only Decision Making Unit rated as efficient is the Windpower 10 ≤ P ≤ 50 MW technology and it can be considered the only non-dominated solution. © 2011 Elsevier Ltd. Source

San Cristobal J.R.,University of Cantabria
Renewable and Sustainable Energy Reviews | Year: 2012

The capacity expansion planning problem of the renewable energy industry involves decisions regarding the optimal mix of different plant types, locations where each plant should be built, and capacity expansion decisions over the planning horizon for each plant. The aim of this paper is to develop a goal programming model, based on a multi-source multi-sink network, in order to locate five renewable energy plants for electric generation in five places located in the autonomous region of Cantabria, in the north of Spain. As different types of plants can be placed in each location, the goal is to locate one plant in each place, maximizing the number of plants that are matched with comparable locations, in a way that the total deviations from goals are minimized. © 2012 Elsevier Ltd. All rights reserved. Source

Pazo D.,University of Cantabria | Montbrio E.,University Pompeu Fabra
Physical Review X | Year: 2014

Large communities of biological oscillators show a prevalent tendency to self-organize in time. This cooperative phenomenon inspired Winfree to formulate a mathematical model that originated the theory of macroscopic synchronization. Despite its fundamental importance, a complete mathematical analysis of the model proposed by Winfree-consisting of a large population of all-to-all pulse-coupled oscillators-is still missing. Here, we show that the dynamics of the Winfree model evolves into the so-called Ott- Antonsen manifold. This important property allows for an exact description of this high-dimensional system in terms of a few macroscopic variables, and also allows for the full investigation of its dynamics. We find that brief pulses are capable of synchronizing heterogeneous ensembles that fail to synchronize with broad pulses, especially for certain phase-response curves. Finally, to further illustrate the potential of our results, we investigate the possibility of "chimera" states in populations of identical pulse-coupled oscillators. Chimeras are self-organized states in which the symmetry of a population is broken into a synchronous and an asynchronous part. Here, we derive three ordinary differential equations describing two coupled populations and uncover a variety of chimera states, including a new class with chaotic dynamics. Source

Green M.O.,NIWA - National Institute of Water and Atmospheric Research | Coco G.,University of Cantabria
Reviews of Geophysics | Year: 2014

Waves are fundamentally important to the physical and biological functioning of estuaries. Understanding and predicting contaminant transport, development of sedimentary structures, geomorphological response to changes in external forcings such as rising sea level, and response of estuarine ecosystems to contaminant stressors require understanding of the relative roles of wave- and current-driven sediment transport. We review wave-driven sediment resuspension and transport in estuaries, including generation of bed shear stress by waves, initiation of sediment motion by waves, and the ways waves modulate, add to, and interact with sediment transport driven by currents. A key characteristic of the wave-induced force on the seabed is extreme spatial and temporal variations; simple analytical models are revealing of the way such patterns develop. Statistical methods have been widely applied to predict wave resuspension of intertidal-flat bed sediments, and physically based predictors of resuspension developed from open-coast studies appear to also apply to short-period estuarine waves. There is ample experimental evidence to conclude that over the long term, waves erode and tidal currents accrete intertidal flats. Waves indirectly add to the formation of fluid mud by adding to the estuarine pool of fine sediment, and waves may fluidize subtidal seabeds, changing bed erodibility. Models have been used to explore the dynamic balance between sediment transport by waves and by currents and have revealed the key control of waves on estuarine morphology. Estuarine intertidal flats are excellent natural laboratories that offer opportunities for working on a number of fundamental problems in sediment transport. © 2013. American Geophysical Union. All Rights Reserved. Source

Agency: Cordis | Branch: H2020 | Program: IA | Phase: LCE-03-2015 | Award Amount: 28.87M | Year: 2016

The aim is to develop and install a pre-commercial wave energy converter (WEC) of 1MW power, the WAVESTAR C6-1000 device, with main targets the device industrialization and the demonstration of wind and wave energy applications. The utility company Parkwind, which develops, builds and operates wind farms in the North Sea, is committed to the achievement of WAVESTARs next development stage. Parkwind provides the installation site with grid connection for the first full-scale WAVESTAR WEC, located within a Belgian offshore wind farm. The UPWAVE project consortium has been developed through the establishment of strong synergies and partnerships, by bringing together key European industrial players and European universities represented by wave energy experts whose overall objectives focus on: 1) Reduction of the devices cost by introducing new design, components and materials. Cost optimization is achieved through new methods on deployment, installation, operation and maintenance. 2) Improvement of the energy efficiency by developing a more advanced Power Take Off based on a second generation digital hydraulic system and innovative control strategy. 3) Integration of wave energy converters in wind farms by considering the interaction between wave and wind devices in terms of operation, cost reduction and maximization of environmental benefits. Public research programs, industrial cooperation and technology transfer from the offshore industry (offshore wind, oil and gas) ensure the development of manufacturing processes, automation and optimisation of the WAVESTAR C6-1000 WEC. New certificates and standards will be made available for the wave energy industry. After the completion of the UPWAVE project, the cost of wave energy will be significantly reduced to a level in line with the cost of offshore wind energy (around 15 c/kWh). The WAVESTAR C6-1000 demonstrator device will lead to a commercial WEC and a hybrid renewable energy device (wind and wave).

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