Now showing items 222-241 of 261

    • Spatio-temporal configurations of human-caused fires in Spain through point patterns 

      Costafreda Aumedes, Sergi; Comas Rodríguez, Carles; Vega García, Cristina (MDPI, 2016)
      Human-caused wildfires are often regarded as unpredictable, but usually occur in patterns aggregated over space and time. We analysed the spatio-temporal configuration of 7790 anthropogenic wildfires (2007–2013) in nine ...
    • Special issue on 'Terrestrial laser scanning': editors' notes 

      Rosell Polo, Joan Ramon; Gregorio López, Eduard; Llorens Calveras, Jordi (MDPI, 2019-10-21)
      In this editorial, we provide an overview of the content of the special issue on 'Terrestrial Laser Scanning'. The aim of this Special Issue is to bring together innovative developments and applications of terrestrial laser ...
    • Species proportions by area in mixtures of Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) 

      Dirnberger, G.; Sterba, Hubert; Condés, Sonia; Ammer, Christian; Annighöfer, P.; Avdagic, A.; Bielak, Kamil; Brazaitis, G.; Coll Mir, Lluís; Heym, Michael; Hurt, V.; Kurylyak, V.; Motta, R.; Pach, Maciej; Ponette, Quentin; Ruiz-Peinado, Ricardo; Skrzyszewski, J.; Srámek, V.; de Streel, G.; Svoboda, M.; Zlatanov, Tzvetan; Pretzsch, Hans (Springer, 2016)
      Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) dominate many of the European forest stands. Also, mixtures of European beech and Scots pine more or less occur over all European countries, but have ...
    • Species richness of woody plants in the landscapes of Central Spain: the role of management disturbances, environment and non-stationarity 

      Martín Queller, E.; Gil Tena, Assumpció; Saura Martínez de Toda, Santiago (Wiley online library, 2011)
      How important is management disturbance on gamma species richness of woody plants at intermediate landscape scales? How is species richness related to other climatic and biotic factors in the study area? How does the ...
    • Statistics and Nosé formalism for Ehrenfest dynamics 

      Alonso, J. L.; Castro, Alberto; Clemente-Gallardo, Jesús; Cuchí Oterino, J. C.; Echenique, Pablo; Falceto, Fernando (IOP Publishing, 2011)
      Quantum dynamics (e.g., the Schrödinger equation) and classical dynamics (e.g., Hamilton equations) can both be formulated in equal geometric terms: a Poisson bracket defined on a manifold. The difference between both ...
    • Stratified sampling in fruit orchards using cluster-based ancillary information maps: a comparative analysis to improve yield and quality estimates 

      Uribeetxebarria Alonso de Armiño, Asier; Martínez Casasnovas, José Antonio; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon; Arnó Satorra, Jaume (Springer, 2019-03-25)
      Estimation of yield or other fruit quality parameter is of great interest to farmers to decide on management actions just before harvesting and, in any case, to anticipate and plan harvesting operations. Making accurate ...
    • Sustainable precision livestock farming: a vision for the future of the Canadian swine industry 

      Pomar Gomà, Jesús; Pomar, Càndido (University of Alberta, 2012)
      Current feeding programs typically use a three-phase schedule, and feed for the nutritional requirements of the most demanding pig. The result is that most of the other pigs are being overfed and feed is wasted. Precision ...
    • Terrain classification using ToF sensors for the enhancement of agricultural machinery traversability 

      Yandun, Francisco J.; Gregorio López, Eduard; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon; Torres-Torriti, Miguel; Auat Cheein, Fernando A. (2017-11-14)
      Ground properties influence various aspects of mobile machinery navigation including localization, mobility status or task execution. Excessive slipping, skidding or trapping situations can compromise the vehicle itself ...
    • Testing the suitability of a terrestrial 2D LiDAR scanner for canopy characterization of greenhouse tomato crops 

      Llop, Jordi; Gil Moya, Emilio; Llorens Calveras, Jordi; Miranda-Fuentes, Antonio; Gallart, Montserrat (MDPI, 2016)
      Canopy characterization is essential for pesticide dosage adjustment according to vegetation volume and density. It is especially important for fresh exportable vegetables like greenhouse tomatoes. These plants are thin ...
    • Tècniques d'aplicació de fitosanitaris 

      Planas de Martí, Santiago (Institució Catalana d’Estudis Agraris, 2004)
    • The relationship between landscape patterns and human-caused fire occurrence in Spain 

      Costafreda Aumedes, Sergi; García Martín, Alberto; Vega García, Cristina (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2013)
      Aim of study: Human settlements and activities have completely modified landscape structure in the Mediterranean region. Vegetation patterns show the interactions between human activities and natural processes on the ...
    • The wildland-urban interface raster dataset of Catalonia 

      Alcasena, Fermín; Evers, Cody R.; Vega García, Cristina (Elsevier, 2018-01-03)
      We provide the wildland-urban interface (WUI) map of the autonomous community of Catalonia (Northeastern Spain). The map encompasses an area of some 3.21 million ha and is presented as a 150-m resolution raster dataset. ...
    • Towards an Optimized Method of Olive Tree Crown Volume Measurement 

      Miranda-Fuentes, Antonio; Llorens Calveras, Jordi; Gamarra Diezma, Juan L.; Gil-Ribes, Jesús A.; Gil Moya, Emilio (MDPI, 2015)
      Accurate crown characterization of large isolated olive trees is vital for adjusting spray doses in three-dimensional crop agriculture. Among the many methodologies available, laser sensors have proved to be the most ...
    • Tractores especiales: viñeros y fruteros 

      Arnó i Pujol, Judit; Masip Vilalta, Joan (Eumedia, 1997)
      A la hora de adquirir un tractor el viticultor y el fruticultor han de tener en cuenta sus necesidades, las características técnicas de la máquina y la utilidad de las innovaciones tecnológicas del mismo.
    • Trajectory analysis in community ecology 

      De Cáceres, Miquel; Coll Mir, Lluís; Legendre, Pierre; Allen, Robert B.; Wiser, Susan; Fortin, Marie-Josée; Condit, Richard; Hubbell, Stephen P. (Ecological Society of America, 2019)
      Ecologists have long been interested in how communities change over time. Addressing questions about community dynamics requires ways of representing and comparing the variety of dynamics observed across space. Until now, ...
    • Tratamientos de plantaciones frutales 

      Planas de Martí, Santiago (Eumedia, 1997)
      Existe un avance significativo en el diseño tecnológico de los equipos para tratamientos frutales. También se desarrollan elementos que mejoran la defensa sanitaria. El control químico tiene un escenario mucho más amplio. ...
    • Tratamientos fitosanitarios de calidad: avances realizados 

      Planas de Martí, Santiago (Eumedia, 2001)
      Las exigencias derivadas del marco competitivo en el que se desenvuelve la agricultura, la necesidad de proveer alimentos seguros y de calidad a los consumidores y, simultáneamente, asegurar la mayor protección de las ...
    • Tratamientos químicos en los invernaderos 

      Planas de Martí, Santiago (Eumedia, 2000)
    • Tree dynamics and co-existence in the montane¿sub-alpine ecotone: the role of different light-induced strategies 

      Améztegui González, Aitor; Coll Mir, Lluís (Wiley, 2011)
      Questions: Is light availability the main factor driving forest dynamics in Pyrenean sub-alpine forests? Do pines and firs differ in growth, mortality and morphological response to low light availability? Can differences ...
    • Tree light capture and spatial variability of understory light increase with species mixing and tree size heterogeneity 

      Ligot, Gauthier; Améztegui González, Aitor; Courbaud, Benoît; Coll Mir, Lluís; Kneeshaw, Daniel (NRC Research Press, 2016)
      Mixed and multi-layered forest ecosystems are sometimes more productive than monospecific and single-layered ones. It has been suggested that trees of different species and sizes occupy complementary positions in space, ...