Sökning: "temporal changes"

Visar resultat 1 - 5 av 471 avhandlingar innehållade orden temporal changes.

  1. 1. Modelling calving and sliding of Svalbard outlet glaciers Spatio-temporal changes and interactions

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Dorothée Vallot; Uppsala universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cryospheric science; glacier modelling; time-lapse imagery; undercutting; sliding inversion; discrete particle model; calving model; subglacial hydrology; sliding law; automatic detection method; calving events size and frequency; ocean interaction; melt water runoff; ice dynamics; ice flow model; Earth Science with specialization in Physical Geography; Geovetenskap med inriktning mot naturgeografi;

    Sammanfattning : Future sea level rise associated to global warming is one of the greatest societal and environmental challenges of tomorrow. A large part of the contribution comes from glaciers and ice sheets discharging ice and meltwater into the ocean and the recent worldwide increase is worrying. LÄS MER

  3. 2. Radar Measurements of Temporal Variation in a Boreal Forest

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Albert Monteith; [2018]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; remote sensing; temporal variation; tomography; antenna array; temporal coherence; Synthetic aperture radar SAR ;

    Sammanfattning : Synthetic aperture radar (SAR) on a satellite platform is a suitable technique for all-weather global monitoring of forest parameters such as biomass. This is important for increasing the accuracy of the global terrestrial carbon flux, the largest uncertainty in our current understanding of the Earth’s carbon cycle. LÄS MER

  4. 3. A Purkinje cell Timing Mechanism. On the Physical Basis of a Temporal Duration Memory

    Detta är en avhandling från Associative Learning

    Författare :Fredrik Johansson; Lund University.; Lunds universitet.; [2015]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cerebellum; Purkinje cell; Timing; Temporal; Memory; Eyeblink conditioning; mGluR7; Kir3; GIRK;

    Sammanfattning : The standard view of neural signaling is that a neuron can influence its target cell by exciting or inhibiting it. Learning is thought to involve strengthening or weakening synaptic connections. For most behaviors, the brain must learn to produce precisely timed activity patterns. LÄS MER

  5. 4. Spatio-Temporal Stream Reasoning with Adaptive State Stream Generation

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Daniel de Leng; Linköpings universitet.; Linköpings universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stream reasoning; stream processing; temporal reasoning; spatial reasoning; configuration planning; intelligent robotics;

    Sammanfattning : A lot of today's data is generated incrementally over time by a large variety of producers. This data ranges from quantitative sensor observations produced by robot systems to complex unstructured human-generated texts on social media. With data being so abundant, making sense of these streams of data through reasoning is challenging. LÄS MER

  7. 5. Peakflow response of stream networks implications of physical descriptions of streams and temporal change

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Anna Åkesson; KTH.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Streamflow routing; peakflow predictions; parameterization; hydrological response; stage-dependency; flooded cross-sections; stream networks; backwater effects; temporal change; land use change; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : Through distributed stream network routing, it has quantitatively been shown that the relationship between flow travel time and discharge varies strongly nonlinearly with stream stage and with catchment-specific properties.Physically derived distributions of water travel times through a stream network were successfully used to parameterise the streamflow response function of a compartmental hydrological model. LÄS MER