Results 11 to 20 of about 60,609 (213)

Los sindicatos ante la globalización. ¿Hacia qué nuevas formas de solidaridad internacional? [PDF]

open access: yesCuadernos de Relaciones Laborales, 2008
En este artículo se analizan las transformaciones que el proceso de globalización conlleva para el contexto de la acción sindical y los retos estratégicos y organizativos que estos cambios suponen para los sindicatos, en particular en lo que se refiere a
Josep Maria Antenas Collderram
doaj   +4 more sources

Analytical Model for Predesigning Probe-Fed Hybrid Microstrip Antennas

open access: yesInternational Journal of Antennas and Propagation, 2018
Based on the equivalent resonant cavity model, an effective analysis methodology of probe-fed hybrid microstrip antennas is carried out in this paper, resulting in a better understanding of the parameter interrelations affecting their behavior. With that,
Nilson R. Rabelo   +6 more
doaj   +2 more sources

Seasonal behaviour and influence of altitude on fog‐water collection in the Eastern Iberian Peninsula (2003–2012)

open access: yesInternational Journal of Climatology, Volume 43, Issue 4, Page 1935-1954, 30 March 2023., 2023
This study on fog at the Mediterranean coast of the Iberian Peninsula with data from 2003 to 2012 has obtained the following findings on its collection potential: marked annual and seasonal variability, great capacity on days with no rain, and the important role of altitude.
David Corell   +2 more
wiley   +1 more source

Determinants of the efficiency of Spanish public broadcasting channels: A data envelopment analysis bootstrapping approach

open access: yesManagerial and Decision Economics, Volume 43, Issue 8, Page 3568-3575, December 2022., 2022
The autonomous public mass media must strengthen the linguistic and cultural diversity of a region. It is questioned whether its financing and management model is appropriate in view of the economic problems it often faces. It has been studied the efficiency of 11 Spanish public broadcasting channels using data envelopment analysis to know which ones ...
Javier Cifuentes‐Faura
wiley   +1 more source

Victims crossing overflowing watercourses with vehicles in Spain

open access: yesJournal of Flood Risk Management, Volume 13, Issue 4, December 2020., 2020
Abstract Heavy rainfall causes many watercourses to overflow. In these circumstances, crossing by car even on a road, can be extremely dangerous; however, dozens of drivers are swept away every year in their vehicles. This paper analyses this type of accident in Spain between 2008 and 2018, recording the date, location, number of victims, age and ...
Álvaro Enríquez‐de‐Salamanca
wiley   +1 more source

Constricted spatiotemporal foraging of the regenerating salamander, Bolitoglossa mombachoensis

open access: yesEcosphere, Volume 10, Issue 10, October 2019., 2019
Abstract Bolitoglossa mombachoensis is an endemic neotropical salamander of the Mombacho Volcano, Nicaragua. Canopy communities within the tropics are hubs for biodiversity, and many tropical plethodontids have a foraging preference for epiphytic plants, such as bromeliads, which provide moist microclimates for shelter, foraging, and nesting.
Roger A. Mendieta Donaire   +8 more
wiley   +1 more source

Modular Planar Antenna at X-band for satellite communications [PDF]

open access: yes, 2011
An antenna which has been conceived as a portable system for satellite communications based on the recommendations ITU-R S.580-6 [1] and ITU-R S.465-5 [2] for small antennas, i.e., with a diameter lower than 50 wavelengths, is introduced.
Fernández González, José Manuel   +5 more
core   +2 more sources

Bidimensional scattering of tm and te polarized waves by dielectric [PDF]

open access: yes, 1993
In the study of electromagnetic radiation effects over dielectric bodies, effective numerical methods are needed. At present, there is a lack of tools for measuring this effects and due to the huge growth of microwave devices, like cellular radio ...
Cardama Aznar, Ángel   +3 more
core   +1 more source

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