Search results for "Horton"
showing 6 items of 6 documents
Variable power-law scaling of hillslope Hortonian rainfall–runoff processes
2019
Hydrological studies focused on Hortonian rainfall–run-off scaling have found that the run-off depth generally declines with the plot length in power-law scaling. Both the power-law proportional coefficient and the scaling exponent show great variability for specific conditions, but why and how they vary remain unclear. In the present study, the scaling of hillslope Hortonian rainfall–run-off processes is investigated for different rainfall, soil infiltration, and hillslope surface characteristics using the physically based cell-based rainfall-infiltration-run-off model. The results show that both temporally intermittent and steady rainfalls can result in prominent power-law scaling at the …
Distribuzione di probabilità della portata di piena a scala di versante generata da deflusso hortoniano
2008
Cell Immunity in Inflammatory Vasculitis
2015
The vasculitides are a highly heterogeneous group of disorders characterized by the presence of inflammatory leukocytes in the vessel walls and reactive inflammation. Giant cell arteritis (GCA) and Takayasu’s arteritis (TA) are the two primary large-vessel vasculitides. Two distinct cellular pathways have been identified in GCA: Th17 polarization and IL-17 secretion and generation of Th1 cells which secrete IFN-γ. These two pathways may play different roles in the pathogenesis of vasculitides. The antineutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAVs) are small vessel vasculitis associated with antibodies directly to myeloperoxidase (MPO-ANCA) such as eosinophilic granulo…
An Evaluation Matrix to Compare Computer Hydrological Models for Flood Predictions
2020
In order to predict and control the impacts of floods in torrents, it is important to verify the simulation accuracy of the most used hydrological models. The performance verification is particularly needed for applications in watersheds with peculiar climatic and geomorphological characteristics, such as the Mediterranean torrents. Moreover, in addition to the accuracy, other factors affect the choice of software by stakeholders (users, modellers, researchers, etc.). This study introduces a &ldquo
A model of dunnian flow at hillslope scale
2005
The development of a thin stream above the soil surface (overland flow) is associated to two mechanism of runoff generation on the hillslope: the infiltration excess (hortonian flow) and saturation excess (dunnian flow) mechanism. The first one is typical of arid and semi-arid regions, usually characterised by high rainfall intensities on soil exhibiting low permeability. The second one, firstly introduced by Hewlett and Hibbert, constitutes the main mechanism of runoff generation in humid regions, characterised by high groundwater table. In the last mechanism runoff is produced by contributing areas of restricted extent that expands with time, where near to the bottom of the hillslope a hi…
Jauno tehnoloģiju pielietojums datu noliktavās
2015
Maģistra darbs „Jauno tehnoloģiju pielietojums datu noliktavās” balstās uz lielo datu analīzes realizācijas problēmu datu noliktavās. Darba mērķis ir izpētīt jaunās tehnoloģijas datu noliktavās un lielo datu apstrādes platformas piemērotību datu analīzes veikšanai praktiski realizējot iepriekš definētu lietojuma gadījumu. Rezultātā tika izpētītas lielo datu tehnoloģijas, kuras jau pielieto datu noliktavu risinājumos, un praktiski realizēts lietojuma gadījums datu analīzei izmantojot lielo datu apstrādes platformu Hortonworks, kā arī apzīmēts tālākais iespējamais datu noliktavu attīstības virziens lielo datu laikmetā.