Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 874 for “"Timescales"”.
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The perception of timescales in electroacoustic music
… is to explore the nature and perception of timescales in electroacoustic music, to examine modes of experiencing time, and to discover a method that uses this knowledge to the advantage of the composer. Although the main focus is on acousmatic works, much of the research presented here has a …
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Carbon dynamics in restiad peatlands across different timescales
… tend to dominate ecosystem response over long-timescales and may amplify or dampen external influences. This has made predicting the effects of environmental change, beyond a few years, highly challenging. Here we use CO₂ fluxes and down-core measurements of carbon accumulation to study the …
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River bifurcations: key processes, timescales and evolutionary trajectories
… works aimed at quantifying the characteristic timescales with which a bifurcation evolves towards its long-term configuration. Among the different fluvial contexts in which the dynamics of bifurcations is relevant, river deltas are of particular interest from both a geomorphological and coastal …
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Anomalous statistical properties and fluctuations on multiple timescales
… methods are stability and smoothness for timescales up to one fourth of the measurement time and the ability to neglect the slow dynamics and trends. Recently, a theory for an analytical understanding of this method was introduced. In this thesis, the method is further analyzed and …
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Timescales of magma residence and transport underneath Iceland
… and storage depths in order to characterise the timescales of pre-eruptive residence and transport: the Skuggafjöll eruption, Bárðarbunga volcanic system; the Borgahraun eruption, Theistareykir volcanic system; and the Laki eruption, Grímsvötn volcanic sytem. These findings are then synthesised …
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Representational dynamics across multiple timescales in human cortical networks
Human cognition occurs at multiple timescales, including immediate processing of the ongoing experiences and slowly drifting higher-level thoughts. To understand how the brain selects and represents these various types of information to guide behavior, this thesis examined representational content …
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The timescales of andesite generation at Mount Ruapehu, New Zealand
… term processes which produce such magmas and the timescales over which they operate. U-series systematics have considerable potential for helping to understand these timescales, although very few studies to date have examined individual volcanoes in detail. A detailed series of …
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Timescales of processes controlling water vapour entry to the stratosphere
… However, their relative importance at different timescales, and the role of the other influences such as detailed ice microphysics, are not yet well known. It is a crucial priority to improve the generally poor representation of stratospheric water vapour in global climate models for both present …
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On the external forcing of Indian Ocean climate variability across timescales
… AMOC weakening. This thesis bridges disparate timescales and data sources to gain insight into how the external forcing of the Earth system works at a fundamental level, from geochemical records of abrupt climate transitions during the last ice age to numerical simulations of the Atlantic …
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Exploration of Small Peptide Binding Interactions with Inorganic Surfaces Across Timescales
Peptide adhesion presents a novel method of binding surfaces which could not otherwise be permanently bound through conventional methods. Two such surfaces of practical interest are titanium dioxide (the surface of osseous implants) and hydroxyapatite (the primary mineral component of bone). The …
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Landscape forcing mechanisms on Quaternary timescales: The Tabernas Basin, SE Spain
Quaternary landform features and their associated sedimentary assemblages (river terraces and alluvial fans) often provide important records of long-term landscape evolution. The reconstruction of global terrace sequences has enabled the identification of numerous external and internal forcing …
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Internet congestion control architecture with application-aware utilities and adaptive timescales
… Second, aimed at introducing adaptability to the timescales in congestion control, we design Rubato. It starts from a pacing scheme encapsulating packet bursts with multiple burst rates, and inherently supports adaptive timescales by leveraging statistical inference techniques. Depending on the …
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Capturing dynamics of inorganic carbon fluxes from diurnal to decadal timescales
The marine carbon cycle plays an important role in regulating Earth's climate. The vastness of the open ocean and the large variability in the coastal ocean provide obstacles to accurately quantify storage and transport of inorganic carbon within marine ecosystems and between marine and other earth …
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On the external forcing of Indian Ocean climate variability across timescales
… AMOC weakening. This thesis bridges disparate timescales and data sources to gain insight into how the external forcing of the Earth system works at a fundamental level, from geochemical records of abrupt climate transitions during the last ice age to numerical simulations of the Atlantic …
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Capturing dynamics of marine inorganic carbon fluxes from diurnal to decadal timescales
The marine carbon cycle plays an important role in regulating Earth’s climate. The vastness of the open ocean and the large variability in the coastal ocean provide obstacles to accurately quantify storage and transport of inorganic carbon within marine ecosystems and between marine and other earth …
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Relationships between wintertime modes of atmospheric variability on intermediate and long timescales
… intermediate (6-30 days), and long (> 30 days) timescales is examined. Sectoral EOF analysis shows the leading patterns of variability on short timescales to correspond to the climatological storm tracks, and on long timescales to resemble the North Atlantic Oscillation (NAO) and the …
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Response of the Texas coast to global change: Geologic versus historic timescales
The response of coastal systems to global change is currently not well understood. To understand current patterns and predict future trends, we establish a geologic record of coastal change along the Gulf of Mexico coast. A study examining the natural versus anthropogenic mechanisms of erosion …
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Medial temporal lobe and prefrontal cortex contributions to memory expressed on short timescales
Oftentimes, adaptive behavior relies on using memory for past events to guide upcoming decisions. To achieve this, memory structures in the brain interact with structures that exert cognitive control over the expression of such memories. This thesis investigated such interactions – the use of …
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Brain-wide representations of behavior spanning multiple timescales and states in C. elegans
Changes in an animal’s behavior and internal state are accompanied by widespread changes in activity across its brain. However, how neurons across the brain encode behavior and how this is impacted by state is poorly understood. We recorded brain-wide activity and the diverse motor programs of …
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Tropical cyclones within the sedimentary record : analyzing overwash deposition from event to millennial timescales
Tropical cyclone activity over the last 5000 years is investigated using overwash sediments from coastal lagoons on the islands of Vieques, Puerto Rico and Koshikijima, Japan. A simple sediment transport model can reproduce the landward fining deposits observed at Vieques, and reveals that although …
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