1,209 research outputs found
Adaptive reconstruction of radar reflectivity in clutter-contaminated areas by accounting for the space-time variability
Identification and elimination of clutter is necessary for ensuring data quality in radar Quantitative Precipitation Estimates (QPE). For uncorrected scanning reflectivity after signal processing, the removed areas have been often reconstructed by horizontal interpolation, extrapolation of non-contaminated PPIs aloft, or combining both based on a classification of the precipitation type. We present a general reconstruction method based on the interpolation of clutter-free observations. The method adapts to the type of precipitation by considering the spatial and temporal variability of the field provided by the multi-dimensional semivariogram. Six different formulations have been tested to analyze the gain introduced by each source of information: (1) horizontal interpolation, (2) vertical extrapolation, (3) extrapolation of past observations, (4) volumetric reconstruction, (5) horizontal and temporal reconstruction, and (6) volumetric and temporal reconstruction. The evaluation of the reconstructed fields obtained with the 6 formulations has been done (i) over clutter-free areas by comparison with the originally observed values, and (ii) over the real clutter-contaminated areas by comparison with the rainfall accumulations from a raingauge network. The results for 24 analyzed events (with a variety of convective and widespread cases) suggest that the contribution of extrapolation of past observations is not fundamental, and that the volumetric reconstruction is the one that overall adapted the best to the different situations.Peer ReviewedPostprint (author’s final draft
Definit un subtipus impulsiu de Transtorn LĂmit de la Personalitat
El Trastorn LĂmit de la Personalitat (TLP) Ă©s una patologia molt heterogènia. Aquest treball ha permès determinar-ne un subtipus amb major homogeneĂŻtat clĂnica: els casos que presenten aquest trastorn juntament amb el Trastorn per Dèficit d'AtenciĂł i Hiperactivitat (TDAH). Aquest subtipus presenta un perfil de pacient marcadament mĂ©s impulsiu, amb mĂ©s problemes d'abĂşs de drogues i mĂ©s tendència a la conducta suĂŻcida. TambĂ© s'observa una major freqüència d'altres trastorns de personalitat caracteritzats per la impulsivitat, com el Trastorn Antisocial de Personalitat, de perfil completament oposat al Trastorn Evitatiu de Personalitat, observat exclusivament al grup 'TLP-no TDAH'.El Trastorno LĂmite de la Personalidad (TLP) es una patologĂa muy heterogĂ©nea. Este trabajo ha permitido determinar un subtipo con mayor homogeneidad clĂnica: los casos que presentan este trastorno junto con el Trastorno por DĂ©ficit de AtenciĂłn e Hiperactividad (TDAH). Este subtipo presenta un perfil de paciente marcadamente más impulsivo, con más problemas de abuso de drogas y más tendencia a la conducta suicida. TambiĂ©n se observa una mayor frecuencia de otros trastornos de personalidad caracterizados por la impulsividad, como el Trastorno Antisocial de Personalidad, de perfil completamente opuesto al Trastorno Evitativo de Personalidad, observado exclusivamente en el grupo 'TLP-no TDAH'
Terrassa 1809: un SuĂs a la Font Vella
La Guerra el FrancĂ©s a Terrassa ha estat habitualment explicada a partir de les veus d'eminents prohoms de la vila com Joaquim de Sagrera, Salvador Vinyals, Antoni Barata...No obstant, hi ha un personatge acreditat per narrar els fets que hi van tenir lloc el 23 de març de 1809 i que ha estat poc esmentat: el brigadier sĂs Ludwig von Wimpffe
Causalidad, informaciĂłn que genera riesgo y derecho al honor: una lectura de la STS, 1ÂŞ, 10.1.2001
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