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 27 for “"fuel loading"”.
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Effects of Wildfire Intensity on Invasives, Stand Structure and Fuel Loading in Shenandoah National Park
… the influence of wildfire intensity on fuel loading, invasives, species richness, diversity, and evenness were studied at Shenandoah National Park. Most National Parks identify invasive species as the biggest threat to their goal of maintaining native ecosystems. Eight study sites were …
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The Greedy Exhaustive Dual Binary Swap methodology for fuel loading optimization in PWR reactors using the poropy reactor optimization Tool
… for the optimization of nuclear reactor core loading patterns. The goal of this optimization scheme is to emulate the approach taken by an engineer when manually optimizing a reactor core loading pattern. This is to determine if this approach is able to locate high quality patterns that, due …
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Wildland fuel loading estimates along a gradient of forest cover types and landscape factors in Harpers Ferry National Historic Park, West Virginia and Rock Creek Park, Virginia, USA
Wildland fuel loading estimates are utilized by natural resource managers today for a variety of reasons, including but not limited to the approximation of fire behavior and potential fire effects. Standing and dead trees, downed woody material, litter (Oi Horizon), and duff (Oe+Oa Horizons) …
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Effects of prescribed burning, mechanical and chemical treatments to curtail rhododendron dominance and reduce wildfire fuel loads
… regeneration and the potential for dangerous fuel conditions around suburban structures near the wildland-urban interface. The purpose of this study was to determine the effects of seven silvicultural treatments on both the fuel loading within an R. maximum thicket and the control of R. …
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The relationships between the forest fuels and vegetation of Richmond National Battlefield Park, Virginia
… objectives of this study were to determine the loading of dead and down forest fuels in 6 forest cover types on the upper Coastal Plain of Virginia, specifically in the Richmond National Battlefield Park, and to determine the relationships between the fuels and the vegetation. The forest fuels …
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Quantification of Influential Surface Fuel Parameters in Fire-Prone Ecosystems of the Netherlands
… wildfire risk in the Netherlands. Focus on fuels monitoring in this region is not as extensive as it is in the United States. Accurate estimation of biomass fuel loading is integral to prevention of wildfires which pose a significant risk to both human lives and property. This research …
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Effectiveness of Treatments to Reduce Rhododendron maximum and Promote Tree Seedling Regeneration in the Southern Appalachians
… 1) controlling of R. maximum as a forest weed 2) fuel loading inside of a R. maximum thicket, and 3) canopy tree seedling regeneration. Mechanical cutting treatments were successful in reducing R. maximum basal area per acre; however stump sprouting and increased fuel loading occurred. Herbicide …
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Surrogate Model Optimisation for PWR Fuel Management
Pressurised Water Reactor (PWR) fuel management is an operational problem for nuclear operators, requiring solutions on a regular basis throughout the life of the plant. A variety of conflicting factors and changing goals mean that fuel loading pattern design problems are multiobjective and, by …
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DOUBLE SAMPLING FOR COARSE WOODY DEBRIS ESTIMATIONS FOLLOWING LINE INTERSECT SAMPLING
… a useful metric for assessing wildlife habitat, fuel loading, and more recently, carbon sequestration. Although many CWD sampling methods exist, accurate estimation is difficult and expensive. Double sampling incorporates auxiliary data that is positively correlated with the attribute of interest …
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DOUBLE SAMPLING FOR COARSE WOODY DEBRIS ESTIMATIONS FOLLOWING LINE INTERSECT SAMPLING
… a useful metric for assessing wildlife habitat, fuel loading, and more recently, carbon sequestration. Although many CWD sampling methods exist, accurate estimation is difficult and expensive. Double sampling incorporates auxiliary data that is positively correlated with the attribute of interest …
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Online higher-order error correction of nonlinear diffusion generalized perturbation theory using neural networks
… The primary application of this work is nuclear fuel loading optimization. The k[Subscript eff] approximation is generated which estimates perturbed conditions as a function of fuel material perturbations (i.e., fuel assembly shuffles) relative to a reference core loading pattern. The …
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Characterization of the MIT Graphite Exponential Pile
… including flux profile, source-dependence, and fuel slug composition, should be well known. In this thesis neutron radiography was performed on 10 different fuel slugs from the pile to directly measure the thickness of the aluminum cladding and confirm the suspected method of slug fabrication. …
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Consumption minimization of the uranium resources by the use of mixed-oxide fueled reactors
… the determination of the optimal use of M0X fueled reactors under various reactor growth scenarios. The reactor growth scenarios include an industry that attains 400, 507, and 600 operating reactors by the year 2000. The reactor-fuel types under consideration include a PWR and a BWR, each of …
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Three-dimensional wildland fuel mapping with remote sensing and machine learning
… affected by climate, weather, topography, and fuel. The amount and arrangement of fuels are of particular interest because they can be directly controlled by managers to manage present-day fire risk and influence future response to fire. Existing fuel maps have a coarse resolution that limits …
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Reactor configurations to support advanced material research
… of high and low-power levels alongside advanced fuel with high physical density and low enriched <sup>235</sup>U. Selected fuel was U-10Mo with 19.75% <sup>235</sup>U enrichment. The fuel and control rods system geometries were adopted from Missouri S&T Reactor (MSTR).</p> <p>A high-power …
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Comparing crown fire predictions in ponderosa pine stands among four fire behavior models
… used across the western United States to plan fuel treatments that reduce hazard fuels, especially as a drier climate has resulted in more frequent high severity wildfire. Given differences in model types, approaches, assumptions, and sensitivity to various input parameters, modeling systems …
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Using Airborne Laser Altimetry to Characterize Surface Fuels in Western Montana
Quantifying surface fuels in forests is problematic for land managers due to the difficulty in measuring fuels of different sizes and spatial variability. Estimating fuel loads is important for identifying departures from historical fire regimes, predicting fire behavior and effects, and …
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Using Airborne Laser Altimetry to Characterize Surface Fuels in Western Montana
Quantifying surface fuels in forests is problematic for land managers due to the difficulty in measuring fuels of different sizes and spatial variability. Estimating fuel loads is important for identifying departures from historical fire regimes, predicting fire behavior and effects, and …
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SOCIAL VALUES FOR ATTRIBUTES AT RISK FROM WILDFIRE IN NORTHWEST MONTANA
… within the WUI, climate change, and excessive fuel loading from decades of successful fire suppression, it is likely that fire suppression costs will continue to rise if current wildfire management priorities are not modified. Previous economic models utilized by the Forest Service to support …
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SOCIAL VALUES FOR ATTRIBUTES AT RISK FROM WILDFIRE IN NORTHWEST MONTANA
… within the WUI, climate change, and excessive fuel loading from decades of successful fire suppression, it is likely that fire suppression costs will continue to rise if current wildfire management priorities are not modified. Previous economic models utilized by the Forest Service to support …
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