• Pohlke theorem: demonstration and graphical solution 

      Gimena Ramos, Faustino Upna Orcid; Gimena Ramos, Lázaro Upna; Goñi Garatea, Mikel Upna Orcid; Gonzaga Vélez, Pedro Upna Orcid (Springer, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      It is known that the axonometric defined by Pohlke, is geometrically known as a means of representing the figures of space using a cylindrical projec-tion and proportions. His theorem says that the three unit vectors ...
    • Automatic detection of uprooted orchards based on orthophoto texture analysis 

      Ciriza Labiano, Raquel; Sola Torralba, Ion Upna Orcid; Albizua, Lourdes; Álvarez-Mozos, Jesús Upna Orcid; González de Audícana Amenábar, María Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      Permanent crops, such as olive groves, vineyards and fruit trees, are important in European agriculture because of their spatial and economic relevance. Agricultural geographical databases (AGDBs) are commonly used by ...
    • Assessment of soil factors controlling ephemeral gully erosion on agricultural fields 

      Ollobarren del Barrio, Paul Upna; Campo-Bescós, Miguel Upna Orcid; Giménez Díaz, Rafael Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid (Wiley, 2017)   Artículo / Artikulua  OpenAccess
      The soil factor is crucial in controlling and properly modeling the initiation and development of ephemeral gullies (EGs). Usually, EG initiation has been related to various soil properties (i.e. sealing, critical shear ...
    • Assessing soil properties controlling interrill erosion: an empirical approach under Mediterranean conditions 

      Ollobarren del Barrio, Paul Upna; Giménez Díaz, Rafael Upna Orcid; Campo-Bescós, Miguel Upna Orcid (Wiley, 2017)   Artículo / Artikulua  OpenAccess
      Soil erodibility is a complex phenomenon that comprises a number of different soil properties. However, most current (empirical) erodibility indices are based on only a few soil properties. A feasible soil characterization ...
    • Analysis of the hydrological and erosive behavior of agrararian watersheds in Navarre (Spain) by experimentation and modelling 

      Chahor, Youssef Upna Orcid (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Es de general conocimiento que la actividad agraria causa un importante efecto en el medio ambiente. Se hace por tanto necesario conocer este efecto así como proponer medidas para su control. Para ello, la información ...
    • Influence of surface roughness measurement scale on radar backscattering in different agricultural soils 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Lievens, Hans; Verhoest, Niko E. C. (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      Soil surface roughness strongly affects the scattering of microwaves on the soil surface and determines the backscattering coefficient (σ 0 ) observed by radar sensors. Previous studies have shown important scale issues ...
    • Influence of surface roughness sample size for C-band SAR backscatter applications on agricultural soils 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Lievens, Hans; Verhoest, Niko E. C.; Giménez Díaz, Rafael Upna Orcid (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      Soil surface roughness determines the backscatter coefficient observed by radar sensors. The objective of this letter was to determine the surface roughness sample size required in synthetic aperture radar applications and ...
    • Analysis of surface roughness in agricultural soils using in-situ measurements and remote sensing techniques 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
      El término rugosidad superficial del suelo es utilizado para describir las variaciones de elevación de la superficie del suelo (micro-relieve). La rugosidad afecta diferentes procesos hidrológicos importantes como el ...
    • Residual stresses with time-independent cyclic plasticity in finite element analysis of welded joints 

      Lostado Lorza, Rubén; Corral Bobadilla, Marina; Martínez Calvo, María Ángeles; Villanueva Roldán, Pedro Upna Orcid (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      Due to the intense concentration of heat in a reduced area when Gas Metal Arc Welding (GMAW) is used to join mechanical components, the regions near the weld bead are subjected to severe thermal cycles. Firstly, the region ...
    • Geometric locus associated with thriedra axonometric projections. Intrinsic curve associated with the ellipse generated 

      Gonzaga Vélez, Pedro Upna Orcid; Gimena Ramos, Faustino Upna Orcid; Gimena Ramos, Lázaro Upna; Goñi Garatea, Mikel Upna Orcid (Springer, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In previous work on the axonometric perspective, the authors presented some graphic constructions that allowed a single and joint invariant description of the relations between an orthogonal axonometric system, its related ...
    • Challenges in Life Cycle Assessment (LCA) of stabilised clay-based construction materials 

      Marcelino Sádaba, Sara Upna Orcid; Kinuthia, John; Oti, Jonathan; Seco Meneses, Andrés Upna Orcid (Elsevier, 2017)   Artículo / Artikulua  OpenAccess
      The preference of clay-based materials for sustainable construction is well-established. The establishment ofsustainability credentials of emergent construction materials is very subjective, and most available tools are ...
    • Non-destructive detection of blackspot in potatoes by Vis-NIR and SWIR hyperspectral imaging 

      López Maestresalas, Ainara Upna Orcid; Keresztes, Janos C.; Goodarzi, Mohammad; Arazuri Garín, Silvia Upna Orcid; Jarén Ceballos, Carmen Upna Orcid; 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 ...
    • Sulfate soils stabilization with magnesium-based binders 

      Seco Meneses, Andrés Upna Orcid; Miqueléiz Jiménez, Luis Upna; Prieto Cobo, Eduardo Upna Orcid; Marcelino Sádaba, Sara Upna Orcid; 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 ...
    • Phytochemicals determination and classification in purple and red fleshed potato tubers by analytical methods and near infrared spectroscopy 

      Tierno, Roberto; López Maestresalas, Ainara Upna Orcid; Riga, Patrick; Arazuri Garín, Silvia Upna Orcid; Jarén Ceballos, Carmen Upna Orcid; Ruiz de Galarreta, José Ignacio Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      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 ...
    • Evaluation of TOPLATS on three Mediterranean catchments 

      Loizu Maeztu, Javier Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Goñi Garatea, Mikel Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      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 ...
    • Clasificación de cultivos a partir de observaciones de teledetección radar. Aplicación a zonas de secano y regadío de Navarra. 

      Larrañaga, Arantzazu Upna (2016)   Tesis doctoral / Doktoretza tesia  OpenAccess
      La teledetección consiste en adquirir a través de sensores de observación, información de un objeto concreto o un área. Una de las principales aplicaciones de la teledetección en el ámbito agrícola es la clasificación ...
    • Estimated and real durability of unfired clay bricks: Determining factorsand representativeness of the laboratory tests 

      Seco Meneses, Andrés Upna Orcid; Urmeneta, Pablo; Prieto Cobo, Eduardo Upna Orcid; García, Beñat; Miqueléiz Jiménez, Luis Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      This paper presents an analysis of the representativeness of the main laboratory tests and the real dura-bility of earth-based construction materials. For this study, a natural marl soil, mixed with different per-centages ...
    • Demonstrating correspondence between decision-support models and dynamics of real-world environmental systems 

      Huffaker, Ray; Muñoz Carpena, Rafael Upna Orcid; Campo-Bescós, Miguel Upna Orcid; Southworth, Jane (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      There are increasing calls to audit decision-support models used for environmental policy to ensure that they correspond with the reality facing policy makers. Modelers can establish correspondence by providing empirical ...
    • Evaluation of 2D models for the prediction of surface depression storage using realistic reference values 

      Giménez Díaz, Rafael Upna Orcid; Mezkiritz Barberena, Irantzu; Campo-Bescós, Miguel Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; González de Audícana Amenábar, María Upna Orcid; Martínez de Aguirre Escobar, Alejandro Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      Depression storage (DS) is the maximum storage of precipitation and runoff in the soil surface at a given slope. The DS is determined by soil roughness that in agricultural soils is largely affected by tillage. The direct ...
    • Desarrollo de productos avanzados para la misión SEOSAT/Ingenio 

      Sabater, N.; Ruiz Verdú, A.; Delegido, J.; Fernández Beltrán, R.; Latorre Carmona, P.; Pla, F.; González de Audícana Amenábar, María Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Sola Torralba, Ion Upna Orcid; Villa, G.; Tejeiro, J. A.; Miguel, E. de; Jiménez, M.; Molina, S.; Moreno, J. (Universitat Politecnica de Valencia, 2016)   Artículo / Artikulua  OpenAccess
      SEOSAT/Ingenio es la futura misión española de observación de la Tierra en el óptico en alta resolución espacial. Mientras que los productos de imagen a Nivel 1, radiancias geo-referenciadas a nivel de sensor, se encuentran ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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