Browsing Civil engineering by Title
Now showing items 290-309 of 413
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Quantification of uncertainties in snow accumulation, snowmelt, and snow disappearance dates
(2013-11-14)Seasonal mountain snowpack holds hydrologic and ecologic significance worldwide. However, observation networks in complex terrain are typically sparse and provide minimal information about prevailing conditions. Snow ... -
QUANTIFYING AIR QUALITY, HUMAN HEALTH, AND CLIMATE IMPACTS FROM ENERGY SYSTEMS: ELECTRICITY AND TRANSPORTATION
Atmospheric emissions from the energy sector contribute to air pollution and climate change. Harmful gases in ambient air degrade air quality; exposure to those gases can lead to health impacts locally and regionally. ... -
Quantifying and Modeling Subgrid Scale Snow Depth Variability in Forested Areas Throughout Multiple Climates in the Western United States
The mountain snowpack provides natural storage of freshwater. This natural storage far exceeds the extent of manmade reservoirs. Furthermore, watersheds throughout the western United States can be predominantly covered in ... -
Quantifying and Modeling the Influence of Forest on the Magnitude and Duration of Mountain Snow Storage in the Pacific Northwest, USA
Forests strongly influence the amount and duration mountain snow storage because forest cover modifies both snow accumulation and ablation processes. Quantifying and predicting forest effects on snow processes and snow ... -
Quantifying Equity and Equity Biases in Transportation and Data
Equity is a critical field of study in transportation. The built transportation network does not serve the needs of the population to achieve equal levels of economic vitality and prosperity. Because of these concerns, ... -
Quantifying seasonal snow using very-high-resolution stereo optical satellite images
Seasonal snow is one of the most dynamic components of the cryosphere. This water resource serves multiple roles in ecohydrology, climate modulation, and nutrient cycling. Measuring snow distributions is critical to ... -
Quasi-sparsity Based Origin-Destination Demand Estimation
A good knowledge of the Origin-Destination (OD) demand matrix has been always important in various transportation applications, including simulation studies, transportation planning, traffic operations and control, and ... -
Rapid Prediction of Infrastructure Damage and Loss Due to Earthquake-Induced Soil Liquefaction
Semi-empirical models based on in-situ geotechnical tests have been the standard-of-practice for predicting soil liquefaction since 1971. Recently, geospatial prediction models utilizing free, readily-available data were ... -
Real-Time Video Analytics Empowered by Machine Learning and Edge Computing for Smart Transportation Applications
Traffic cameras have the properties of being cost-effective, information-rich, and widely deployed, which are filling up a big gap in today’s traffic sensor needs. With the recent progress in traffic operations, information ... -
Recent Warming and Watershed Impacts of the Tonle Sap Lake, Cambodia
Tonle Sap Lake in Cambodia is arguably the world’s most productive freshwater ecosystems and the dominant source of animal protein for the country. The rapid rise of hydropower schemes, deforestation, land development and ... -
Reconstruction algorithms to improve nondestructive evaluation of reinforced concrete
(1997)Two reconstruction algorithms have been developed to improve nondestructive evaluation of reinforced concrete structures. Both algorithms implement computationally demanding strategies to estimate the properties of potentially ... -
Recovering biomethane from fats, oils, and greases: Examining the impacts of microbial ecology on anaerobic codigester stability and bioconversion kinetics
Recovering biomethane with anaerobic digestion is of global interest to reduce carbon footprints and improve process economics for the treatment of organic wastes. Fats, oils, and greases (FOG) are desirable co-substrates ... -
Regional-Scale Coseismic Landslide Hazard Modeling and Consequence Analysis
Earthquake-induced, or coseismic, landslides occur in great number during moderate to large (>M5) earthquakes. These landslides typically occur across regions spanning hundreds to thousands of square kilometers. The ... -
Regulating uncertainty: Institutional implications of regulatory mechanisms for temporary accommodations for displaced persons in Germany and Sweden
Regulations exist to provide a minimum standard for quality and delivery of service. However, during times of uncertainty, it is unclear as to how regulations are utilized within the immediate response. This dissertation ... -
Remote sensing of mountain snow surface temperatures at high temporal resolution using geostationary satellites
Remote sensing by geostationary satellites, such as by the NOAA GOES-R series with the Advanced Baseline Imager (ABI), can provide imagery of surface temperatures at high temporal resolutions due to their fixed views of ... -
Remote Sensing of Water Surface Variability Near River Mouths
Rivers discharge approximately 1,000,000 cubic meters per second of freshwater to the oceans yet less than 60% of this discharge is measured at the river mouth. The standard method of measuring river discharge is to use ... -
Remote Sensing Surface Temperatures of Forests and Melting Snow at Different Spatial Scales
Uncooled thermal infrared (TIR) imagers, commonly used on aircraft and small unoccupied aerial systems (UAS, “drones”), can provide high-resolution surface temperature maps, but their accuracy is dependent on reliable ... -
Representing atmospheric moisture content in the mountains: Examination using distributed sensors in the Sierra Nevada, California
(2013-02-25)Atmospheric moisture content is a critical factor in both the water balance and the energy balance for a river basin. Despite its importance to hydrology, atmospheric moisture is sparsely measured, particularly in the ... -
Reservoir Assessment Tool 2.0: Stakeholder driven improvements to Satellite Remote Sensing based Reservoir Monitoring
In light of the rapidly increasing regulation of rivers due to planned and constructed reservoirs, monitoring reservoir operations has become very crucial. The Reservoir Assessment Tool (RAT) framework was developed to ... -
Reservoir Assessment Tool 3.0: An open source and user-friendly modeling platform to Mobilize the Global Water Community
Rivers, Earth's circulatory system for surface water, akin to human arteries, ensure water distribution for the planet. While these river networks are natural, human intervention has led to the construction of dams. In the ...