Envíos recientes

  • Comparison between capacitive and microstructured optical fiber soil moisture sensors 

    López Aldaba, Aitor Upna; López Torres, Diego Upna; Campo Bescós, Miguel Ángel Upna; López Rodríguez, José Javier; Yerro Lizarazu, David; Elosúa Aguado, César Upna; Arregui San Martín, Francisco Javier Upna; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel Upna (MDPI, 2018)   Artículo / Artikulua  OpenAccess
    Soil moisture content has always been an important parameter to control because it is a deterministic factor for site-specific irrigation, seeding, transplanting, and compaction detection. In this work, a discrete sensor ...
  • Gully geometry: what are we measuring? 

    Casalí Sarasíbar, Javier Upna; Giménez Díaz, Rafael Upna; Campo-Bescós, Miguel Ángel Upna (European Geosciences UnionCopernicus Publications, 2015)   Artículo / Artikulua  OpenAccess
    Much of the research on (ephemeral) gully erosion comprises the determination of the geometry of these eroded channels, especially their width and depth. This is not a simple task due to uncertainty generated by the wide ...
  • Evaluación de la producción de sedimentos y calidad de las aguas en cuencas agrarias de Navarra 

    Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna; Díez Beregaña, Javier (Universidad de La Rioja, 2012)   Artículo / Artikulua  OpenAccess
    The Government of Navarre (Spain) established a series of experimental watersheds on different sites of its territory in order to assess the impact of the agricultural activities on the environment. Hydrological/meteorological ...
  • Coupling hysteresis analysis with sediment and hydrological connectivity in three agricultural catchments in Navarre, Spain 

    Keesstra, Saskia D.; Davis, Jason; Masselink, Rens Hein; Casalí, Javier; Peeters, Edwin T.H.M.; Dijksma, Roel (Springer Verlag, 2019)   Artículo / Artikulua
    Purpose: Rain storm events mobilise large proportions of fine sediments in catchment systems. Sediments from agriculturalcatchments are often adsorbed by nutrients, heavy metals and other (in)organic pollutants that may ...
  • La atención a las emergencias en las zonas rurales. Modelos de personal operativo de los servicios de bomberos 

    Echeverría Iriarte, Francisco Javier (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
    En 2013 un estudio sobre la ubicación de los parques de bomberos en España y de su cobertura territorial identificó deficiencias en relación a la población que no dispone de atención apropiada en un tiempo considerado como ...
  • Análisis de la información sobre accidentes en el sector agrario recogida en los medios de comunicación en el decenio 2004 a 2013 

    Arnal Atarés, Pedro Upna (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
    El presente trabajo trata de sacar a la luz muchos accidentes que ocurren en el sector agrario y a los que no se da la importancia debida haciendo que este sector parezca menos peligroso de lo que realmente es. Del ...
  • On the assimilation set-up of ASCAT soil moisture data for improving streamflow catchment simulation 

    Loizu Maeztu, Javier Upna; Massari, Christian; Álvarez Mozos, Jesús Upna; Tarpanelli, Angelica; Brocca, Luca; Casalí Sarasíbar, Javier Upna (Elsevier, 2018)   Artículo / Artikulua
    Assimilation of remotely sensed surface soil moisture (SSM) data into hydrological catchment models has been identified as a means to improve stream flow simulations, but reported results vary markedly depending on the ...
  • Análisis textural de la ortofoto PNOA para la actualización de bases de datos geográficas de cultivos permanentes 

    Ciriza Labiano, Raquel (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
    Los cultivos permanentes como los olivos, las viñas o los árboles frutales son importantes en la agricultura europea desde el punto de vista de su relevancia especial y económica. En al ámbito agricola, es muy común que ...
  • Evaluación multitemporal de métodos de corrección topográfica mediante el uso de imágenes sintéticas multiespectrales 

    Sola Torralba, Ion Upna; Álvarez Mozos, Jesús Upna; González Audicana, María Upna; Torres Escribano, José Luis Upna (Asociación Española de Teledetección, 2014)   Artículo / Artikulua  OpenAccess
    En este trabajo se presentan los resultados de la evaluación multitemporal de varios métodos de corrección topográfica (TOC), cuya bondad se determina de forma cuantitativa mediante el uso de imágenes sintéticas multiespectrales ...
  • Synthetic images for evaluating topographic correction algorithm 

    Sola Torralba, Ion Upna; González Audicana, María Upna; Álvarez Mozos, Jesús Upna; Torres Escribano, José Luis Upna (IEEE, 2013)   Artículo / Artikulua  OpenAccess
    In the last years, many topographic correction (TOC) methods have been proposed to correct the illumination differences between the areas observed by optical remote sensors. Although the available number of TOC methods is ...
  • Multitemporal evaluation of topographic correction algorithms using synthetic images 

    Sola Torralba, Ion Upna; Álvarez Mozos, Jesús Upna; González Audicana, María Upna; Torres Escribano, José Luis Upna (SPIE, 2012)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Land cover classification and quantitative analysis of multispectral data in mountainous regions is considerably hampered by the influence of topography on the spectral response pattern. In the last years, different ...
  • Understanding top management's decision-making on implementing project management systems: an exploratory study 

    Arraiza Irujo, Juan; Pérez Ezcurdia, Amaya Upna (Mechanical Engineering Faculty in Slavonski Brod, 2017)   Artículo / Artikulua  OpenAccess
    Top Management’s motivation to invest in improving their organisation’s Project Management processes and practices is arguably an important under-researched phenomenon. In this paper we present the results of an exploratory ...
  • Assessing hillslope-channel connectivity in an agricultural catchment using rare-earth oxide tracers and random forests models 

    Masselink, R. J. H.; Temme, A. J. A. M.; Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna; Keesstra, S. D. (Universidad de la Rioja, 2017)   Artículo / Artikulua  OpenAccess
    Soil erosion from agricultural areas is a large problem because of off-site effects like the rapid filling of reservoirs. To mitigate the problem of sediments from agricultural areas reaching the channel, reservoirs and ...
  • Prediction of main potato compounds by NIRS 

    López-Maestresalas, Ainara Upna; Pérez Roncal, Claudia; Tierno, Roberto; Arazuri Garín, Silvia Upna; Ruiz de Galarreta, José Ignacio Upna; Jarén Ceballos, Carmen Upna (AIDIC, 2017)   Artículo / Artikulua  OpenAccess
    Potato (Solanum tuberosum, L) compounds are generally determined by analytical methods including gasliquid chromatography (GLC), HPLC and UV-VIS spectrophotometry. These methods require a lot of time and are destructive. ...
  • A multi-year analysis of traffic accidents involving agricultural tractors 

    Arnal Atarés, Pedro Upna; López-Maestresalas, Ainara Upna; Arazuri Garín, Silvia Upna; Mangado, Jesús Upna; Jarén Ceballos, Carmen Upna (AIDIC, 2017)   Artículo / Artikulua  OpenAccess
    The agricultural sector in Spain is responsible for a high rate of accidents every year, and many of them are traffic accidents. Tractors are a relatively rare sight on roads, meaning that the incidence of accidents involving ...
  • Non-destructive detection of blackspot in potatoes by Vis-NIR and SWIR hyperspectral imaging 

    López-Maestresalas, Ainara Upna; Keresztes, Janos C.; Goodarzi, Mohammad; Arazuri Garín, Silvia Upna; Jarén Ceballos, Carmen Upna; Saeys, Wouter (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
    Blackspot is a subsurface potato damage resulting from impacts during harvesting. This type of bruising represents substantial economic losses every year. As the tubers do not show external symptoms, bruise detection in ...
  • Phytochemicals determination and classification in purple and red fleshed potato tubers by analytical methods and near infrared spectroscopy 

    Tierno, Roberto; López-Maestresalas, Ainara Upna; Riga, Patrick; Arazuri Garín, Silvia Upna; Jarén Ceballos, Carmen Upna; Ruiz de Galarreta, José I (Wiley, 2016)   Artículo / Artikulua
    BACKGROUND: Over the last two decades, the attractive colours and shapes of pigmented tubers and the increasing concern about the relationship between nutrition and health have contributed to the expansion of their ...
  • Bulk optical of potato flesh in the 500 – 1900 nm range 

    López-Maestresalas, Ainara Upna; Aernouts, Ben; Beers, Robbe van; Arazuri Garín, Silvia Upna; Jarén Ceballos, Carmen Upna; Baerdemaeker, Josse de; Saeys, Wouter (Springer US, 2015)   Artículo / Artikulua  OpenAccess
    In this study, the optical properties of potato flesh tissue were estimated using double-integrating sphere (DIS) measurements combined with an inverse adding-doubling (IAD) light propagation model. Total reflectance, ...
  • A review of the application of near-infrared spectroscopy for the analysis of potatoes 

    López-Maestresalas, Ainara Upna; Arazuri Garín, Silvia Upna; García Ruiz, Ignacio; Mangado, Jesús Upna; Jarén Ceballos, Carmen Upna (American Chemical Society, 2013)   Artículo / Artikulua  OpenAccess
    Potato (Solanum tuberosum L.) is one of the most important crops in the world being considered as a staple food in many developing countries. The potato industry like other vegetable and fruit industries is subject to the ...
  • Sulfate soils stabilization with magnesium-based binders 

    Seco Meneses, Andrés; Miqueleiz, Luis; Prieto Cobo, Eduardo; Marcelino Sádaba, Sara; García, Beñat; Urmeneta, Pablo (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
    Sulfate soils' stabilization is a very interesting subject with technical, economic and environmental implications. The difficulty of their stabilization is due to the fact that the usual stabilizer additives are based ...

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