Envíos recientes

  • Project management in development cooperation. Non-governmental organizations 

    Montes Guerra, Maricela I.; Romero de Miguel, Aida; Pérez Ezcurdia, Amaya; Gimena Ramos, Faustino; Díez Silva, H. Mauricio (Universidad Nacional de Colombia, 2015)   Artículo / Artikulua
    Este artículo analiza la adopción de prácticas propias de la gestión de proyectos en las ONG destinadas a la cooperación para el desarrollo, así como su influencia en la ejecución y el impacto de la aplicación de metodologías, ...
  • Clasificación de cultivos en la zona media de Navarra mediante imágenes radar polarimétricas 

    Larrañaga, Arantzazu; Albizua, L.; Álvarez Mozos, Jesús (Universidad Politécnica de Valencia, 2010)   Artículo / Artikulua
    Navarra lleva años empleando la técnica de clasificación supervisada de imágenes multiespectrales de satélite para la realización de la estadística agraria. La cubierta nubosa, muy habitual en esta zona, limita e incluso ...
  • Accuracy of methods for field assessment of rill and ephemeral gully erosion 

    Casalí Sarasíbar, Javier; Loizu Maeztu, Javier; Campo Bescós, Miguel Ángel; Santisteban Comino, Luisa María de; Álvarez Mozos, Jesús (Elsevier, 2006)   Artículo / Artikulua
    To properly assess soil erosion in agricultural areas, it is necessary to determine precisely the volume of ephemeral gullies and rills in the field by using direct measurement procedures. However, little information is ...
  • Evaluation of TOPLATS on three Mediterranean catchments 

    Loizu Maeztu, Javier; Álvarez Mozos, Jesús; Casalí Sarasíbar, Javier; Goñi Garatea, Mikel (Elsevier, 2016)   Artículo / Artikulua
    Physically based hydrological models are complex tools that provide a complete description of the different processes occurring on a catchment. The TOPMODEL-based Land-Atmosphere Transfer Scheme (TOPLATS) simulates water ...
  • Evaluation of surface roughness parameters in agricultural soils with different tillage conditions using a laser profile meter 

    Martinez de Aguirre Escobar, Alejandro; Álvarez Mozos, Jesús; Giménez Díaz, Rafael (Elsevier, 2016)   Artículo / Artikulua
    Surface roughness crucially affects the hydrological and erosive behaviours of soils. In agricultural areas surface roughness is directly related to tillage, whose action strongly affects the key physical properties of ...
  • Multi-criteria evaluation of topographic correction methods 

    Sola Torralba, Ion; González de Audícana Amenábar, María; Álvarez Mozos, Jesús (Elsevier, 2016)   Artículo / Artikulua
    In the last decades, several topographic correction methods (TOC) have been proposed, but there is not an agreement on the best method. Furthermore, different evaluation criteria have been used in the past, and there is ...
  • On the added value of quad-pol data in a multi-temporal crop classification framework based on RADARSAT-2 imagery 

    Larrañaga, Arantzazu; Álvarez Mozos, Jesús (MDPI, 2016)   Artículo / Artikulua
    Polarimetric SAR images are a rich data source for crop mapping. However, quad-pol sensors have some limitations due to their complexity, increased data rate, and reduced coverage and revisit time. The main objective of ...
  • Error in radar-derived soil moisture due to roughness parameterization: an analysis based on synthetical surface profiles 

    Lievens, Hans; Vernieuwe, Hilde; Álvarez Mozos, Jesús; Baets, Bernard de; Verhoest, Niko E. C. (MDPI, 2009)   Artículo / Artikulua
    In the past decades, many studies on soil moisture retrieval from SAR demonstrated a poor correlation between the top layer soil moisture content and observed backscatter coefficients, which mainly has been attributed ...
  • Effective roughness modelling as a tool for soil moisture retrieval from C-and L-band SAR 

    Lievens, Hans; Verhoest, Niko E. C.; Keyser, E. de; Vernieuwe, Hilde; Matgen, P.; Álvarez Mozos, Jesús; Baets, Bernard de (Copernicus Publications, 2011)   Artículo / Artikulua
    Soil moisture retrieval from Synthetic Aperture Radar (SAR) using state-of-the-art backscatter models is not fully operational at present, mainly due to difficulties involved in the parameterisation of soil surface ...
  • On the soil roughness parameterization problem in soil moisture retrieval of bare surfaces from synthetic aperture radar 

    Verhoest, Niko E. C.; Lievens, Hans; Wagner, Wolfgang; Álvarez Mozos, Jesús; Moran, M. Susan; Mattia, Francesco (MDPI, 2008)   Artículo / Artikulua
    Synthetic Aperture Radar has shown its large potential for retrieving soil moisture maps at regional scales. However, since the backscattered signal is determined by several surface characteristics, the retrieval of soil ...
  • Bean moisture diffusivity and drying kinetics: a comparison of the liquid diffusion model when taking into account and neglecting grain shrinkage 

    Resende, O.; Correa, P. C.; Jarén Ceballos, Carmen; Moure Gil, José (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2007)   Artículo / Artikulua
    El objetivo de este trabajo fue ajustar el modelo de difusión líquida para predecir las pérdidas de volumen de grano en el secado de judía (Phaseolus vulgaris L.). Se recolectaron granos de judía con una humedad del 0,92 ...
  • Evaluation of mechanical tomato harvesting using wireless sensors 

    Arazuri Garín, Silvia; Arana Navarro, Ignacio; Jarén Ceballos, Carmen (MDPI, 2010)   Artículo / Artikulua
    The harvesting of processing tomatoes is fully mechanised and it is well known that during harvest, fruits are subjected to mechanical stress causing physical injuries, including skin punctures, pulp and cell rupture. Some ...
  • Evaluation of risk factors in fatal accidents in agriculture 

    Arana Navarro, Ignacio; Mangado, Jesús; Arnal Atarés, Pedro; Arazuri Garín, Silvia; Alfaro López, José Ramón; Jarén Ceballos, Carmen (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2010)   Artículo / Artikulua
    En el ámbito agrario se producen anualmente muchos accidentes mortales, no siendo todos ellos registrados oficialmente como accidentes laborales. El objetivo de esta investigación es comparar los datos reales y oficiales ...
  • Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations 

    Álvarez Mozos, Jesús; Verhoest, Niko E. C.; Larrañaga, Arantzazu; Casalí Sarasíbar, Javier; González Audicana, María (MDPI, 2009)   Artículo / Artikulua
    Radar-based surface soil moisture retrieval has been subject of intense research during the last decades. However, several difficulties hamper the operational estimation of soil moisture based on currently available ...