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Gomez A.,Campus Universitario Of Gijon | Rodriguez M.A.,Campus Universitario Of Gijon
Journal of Cleaner Production | Year: 2011

During recent decades, the impact of industrial organisations on the environment has become clearly evident. It has also become more difficult to hide and more expensive. Globally, this has caused many enterprises to put all their efforts into seeking management instruments that allow them to reduce their negative impact on the environment as well as improving their economic efficiency. This environmental interest is either voluntary or forced by customers or by legal pressure. Environmental Management Systems (EMSs) are among the many tools that have appeared to fulfil that goal and that have drawn international researchers' attention. The most popular system and the one most often used is the ISO 14001 standard. This paper examines empirically the influence that this certification exerts on the company's pollutant emission policy. The analysis was carried out in four regions of Spain: Asturias, Cantabria, Galicia and Castilla-León and includes 126 industrial organisations. The goal of this paper is to investigate the behaviour of the companies according to their emissions policies once they have achieved the ISO 14001 certification. In the paper the Toxics Release Index of 56 certified companies is compared with the Index of 70 non-certified companies. Through a statistical analysis based on the Student's t-test and the Mann-Whitney U test, it was concluded that ISO 14001 does not represent an environmental proactivity signal clearly enough to result in a reduction of the company's environmental polluting index. © 2010 Elsevier Ltd. All rights reserved. Source


De Cos M.E.,University of Oviedo | De Cos M.E.,Campus Universitario Of Gijon | Alvarez Y.,University of Oviedo | Alvarez Y.,Campus Universitario Of Gijon | And 2 more authors.
EuCAP 2010 - The 4th European Conference on Antennas and Propagation | Year: 2010

A novel design of planar Artificial Magnetic Conductor (AMC) for frequencies in the SHF RFID band is presented. The designed AMC is based on a Frequency Selective Surface (FSS) and shows polarization angle independency. Its angular margin when operating under oblique incidence is also tested. Design parameters are discussed with the support of FEM simulations and measurements in anechoic chamber of the manufactured prototype, with a good agreement between simulations and measurements. Source


Hadarig R.C.,Campus Universitario Of Gijon | De Cos M.E.,Campus Universitario Of Gijon | Las-Heras F.,Campus Universitario Of Gijon
International Journal of Antennas and Propagation | Year: 2012

A microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor (AMC)/electromagnetic band-gap structure (EGB) is presented. The electrical characteristics of the embedded structure are evaluated using MoM simulations. The manufactured prototypes are characterized in terms of return loss, gain, and radiation pattern measurements in an anechoic chamber. Copyright © 2012 R. C. Hadarig et al. Source


Arboleya A.,Campus Universitario Of Gijon | Alvarez Y.,Campus Universitario Of Gijon | Las-Heras F.,Campus Universitario Of Gijon
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) | Year: 2013

A three-axes planar measurement setup for antenna characterization and inverse scattering applications is described. The need for a new measurement facility capable of working at millimeter and sub millimeter frequency bands is the main motivation of this work. The system can be divided into two main blocks devoted to mechanical and radiofrequency control respectively. Frequency band is extended up to 330 GHz by means of mixing heads, and a working surface of 1450×1500×1100 mm, with 0.01 mm positioning accuracy is achieved. Measurement setup is provided with an easy-to-use graphical user interface allowing configuration of mechanical and radiofrequency devices, as well as graphical representation of the results and post processing tasks. © 2013 IEEE. Source


Hadarig R.C.,Campus Universitario Of Gijon | De Cos M.E.,Campus Universitario Of Gijon | Las-Heras F.,Campus Universitario Of Gijon
International Journal of Antennas and Propagation | Year: 2012

In this contribution High-Performance Computing electromagnetic methods are applied to the design of a patch antenna combined with EBG structure in order to obtain bandwidth enhancement. The electrical characteristics of the embedded structure (patch antenna surrounded by EBG unit cells) are evaluated by means of method of moment technique (MoM) whereas for designing the unit cell, the finite element method (FEM) together with the Bloch-Floquet theory is used. The manufactured prototypes are characterized in terms of return loss and radiation pattern in an anechoic chamber. Copyright © 2012 R. C. Hadarig et al. Source

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