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 224 for “"extreme events"”.
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Extreme events in geoarchives
… time scales and identifying causal linkages to extreme hydrological events requires longer datasets. To extend instrumental flood time series back in time, natural geoarchives are increasingly explored as flood recorders. Therefore, annually laminated (varved) lake sediments seem to be the most …
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Statistical Models for Extreme Events in Atmospheric Processes
<p>Extreme events - that is, intense events so rare to be poorly represented in historical observational records - play a fundamental role in atmospheric processes, and can have far reaching consequences ranging from impacts on society, economy, the environment, as well as on the global water and …
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Power Grid Management in Response to Extreme Events
<p>Power system management in response to extreme events is one the most important operational aspects of power systems. In this thesis, a novel Event-driven Security Constrained Unit Commitment (E-SCUC) model and a statistical method, based on regression and data mining to estimate the system …
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Essays on extreme events in agricultural futures markets
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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Statistical models for dependent and non-stationary extreme events
Extreme value methods are used in a wide range of applications, for example they may be used for modelling wave heights and river levels in hydrology, wind speeds in structural engineering and share price return levels in economics. Many statistical models and methods of inference exist for the …
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Built environment system resiliency subject to extreme events with fema ihp
Repairing and rebuilding structures following an extreme event requires capital. Due to shifting demographics, high-risk settlements are increasingly placing both populations and the built environment at substantial loss exposure to such extreme events. Instead of retaining extreme event risks …
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Coupled simulation of loading and response of columns under extreme events
Forces imparted to structural columns during blast-induced loading depends on the shape and size of columns as well as on the intensity of the blast. Column's geometry - i.e., shape and size - influences the flow field around the column and consequently the flow field determines forces experienced …
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A service-driven approach to assist water management during extreme events
… using a case study of the Texas flooding events in the Lower Colorado River Basin in November 2014 and May 2015, which involved a sudden switch from drought to flooding. We have constructed two prediction models: a statistical model for flow prediction and a hybrid statistical and …
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A Hybrid Simulation Methodology To Evaluate Network Centricdecision Making Under Extreme Events
… these kinds of organizations is the so-called extreme events. This dissertation provides a hybrid simulation methodology based on classical simulation paradigms combined with social network analysis for evaluating and improving the organizational structures and procedures, mainly the incident …
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An exploration of data-driven techniques for predicting extreme events in intermittent dynamical systems
The ability to characterize and predict extreme events is a vital topic in fields ranging from finance to ocean engineering. Typically, the most-extreme events are also the most-rare, and it is this property that makes data collection and direct simulation challenging. In this thesis, I will …
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Predicting extreme events : the role of big data in quantifying risk in structural development
Engineers are well-placed when calculating the required resistance for natural and non-natural hazards. However, there are two main problems with the current approach. First, while hazards are one of the primary causes of catastrophic damage and the design against risk contributes vastly to the …
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Advances in statistical post-processing of weather forecasts, probabilistic forecasting, and modelling of extreme events
… ensemble forecasts, with a particular focus on extreme events; together with contributions more generally for the probabilistic forecasting and modelling of extremes. I first address the problem of post-processing of forecasts across multiple lead times. Standard approaches fit separate models …
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Extreme events over the contiguous United States portrayed in a CESM-WRF dynamical downscaling framework
… and projected (2050-2099) behavior of extreme precipitation (PR), maximum temperature (TMAX) and minimum temperature (TMIN) events within the contiguous United States. Compared to reanalysis data, simulations represent temperature better than precipitation, and the model performs better …
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Future changes in extreme events in Mozambique as simulated using the PRECIS regional climate modeling system
… variability and inthe frequency and intensity of extreme events. Mozambique is well known for its occurrenceof severe weather and extreme climate events such as floods, tropical cyclones and droughts.Such events have serious impacts on the livelihoods of most people who often rely on subsistence …
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Plasticity, Intraspecific Variability and Local Adaptation to Climatic Extreme Events of Ecotypes/Provenances of Key Plant Species
… increase of magnitude and frequency of climatic extreme events such as drought periods or heatwaves, will alter growing conditions for plants in the future. Persistent ecosystems, with long-living organisms, such as forest or permanent grassland will be particularly impacted by this development. …
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Assessing factors contributing to the changes in historical temperature extremes and investigating future changes in extreme events
Temperature extremes are among the most studied features in the climate research community using both the observed datasets and the simulated outputs from climate models. Such extremes often lead to irreversible societal, ecological, and economic consequences across the globe. Moreover, projected …
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The Waimakariri River and its environment: frequency analysis of extreme events and the effects of flow modifications
… for its unpredictability; flood and drought events can occur at any time of the year. Knowledge about the return period of extreme events is crucial for water management and planning. Frequency analysis uses the stochastic nature of these extreme events as a basic concept to account for …
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Data-driven modeling and analysis of the U.S. air transportation network and its resilience to extreme events
This thesis presents a data-driven approach for analyzing and predicting delays of an air transportation network using publicly available data. The first part of this thesis details methods to quantify the resilience of the network. Traditionally, network metrics rely on removal of nodes …
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