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 24 for “"Volume estimation"”.
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Volume estimation of fruit from digital profile images
… and blemish detection purposes to estimate the volumes of the corresponding individual pieces of fruit, Data sets of actual fruit volumes and digitial images of the fruit that simulate both single and multiple camera set-ups are obtained.
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Designing a low-cost measurement system for volume estimation
… a low-cost 3D reconstruction system targeted at volumetric reconstruction for lymphedema diagnosis purposes. The goal is to construct a system capable of determining changes in volume of an arm. This thesis involves construction of multi-camera rigs, but focuses on the development of data …
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Bluetooth based dynamic critical route volume estimation on signalized arterials
… to improve system performance. Actual volume in the network is a result of the timing plans which are designed and modified based on the volume which is generated using existing timing plans in the system. This interdependency between timing plan and volume on the network is a dynamic …
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UAS as an Inventory Tool: A Photogrammetric Approach to Volume Estimation
… many industries, including those that require volumetric estimation. Traditionally volumetric inventories have been performed with tape measurements, and in some instances where accuracy is of utmost importance, survey grade GPS and/or terrestrial light detection and ranging (LiDAR) equipment. …
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Visual hulls for volume estimation : a fast marching cubes based approach
… views of an object to construct cone-like volumes that intersect, forming the visual huH. Multiple views can be generated using one of many different camera systems. The visual hull is accurately calculated using high resolution voxel based models, which can be computationally expensive. …
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Minimum tree height sample sizes necessary for accurately estimating merchantable plot volume in Loblolly pine plantations
… of 0.95, to obtain a merchantable plot volume estimate of loblolly pine within ± 3, 5, and 10% of the volume observed if all plot trees had been measured for height were determined for all combinations of volume estimation techniques and sample designs examined in this study. The volume …
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Predicted safety & excavation progress algorithms for autonomous excavation
… and methodologies in ground mapping and estimation of excavation progress, which can accelerate autonomous excavation. For autonomous excavation, safety is a significant concern to reduce accidents and machinery damage. Considering this point, this thesis deals with tracking, motion …
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The ideal stormwater runoff calculator and how to apply it to site scale planning of federal facilities
… comparison of existing stormwater runoff volume estimation methods used to determine predevelopment and post-development hydrologic conditions for site scale retention design. Results of this comparison imply that it might be advantageous for federal facilities to adopt moderate to high …
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Efficient Sampling Methods for Forest Inventories and Growth Projections
… stand-level aggregations, subsampling height for volume estimation, and updating stand projections using periodic inventories. A series of simulated loblolly pine plantations with varying degrees of spatial heterogeneity were generated at different stages in stand development. Repeated sampling …
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DEVELOPMENT OF IMPROVED ARTERIAL SPIN LABELING METHODS IN HUMANS AND ANIMAL MODELS
… ASL and ASL with added arterial cerebral blood volume estimation, which address these limitations. The first method acquires very short TIs with shortened bolus durations which allow estimation of T1 and M0 without a separate scan, and shortens TR when possible for a shortened scan time. The …
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Evaluating and improvement of tree stump volume prediction models in the eastern United States
… ratio method requires a way to get stump volume to obtain total tree aboveground biomass. Therefore, the stump volumes contribute to the National Carbon Inventory. Agencies and organizations that are concerned with carbon accounting would benefit from an improved method for predicting tree …
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Multi-tracer Study for Groundwater Dating in Southern Oman
… Trap Trace Analysis, a conversion factor for volume estimation of small samples was determined and the pressure readout was automated by a Labview program. In addition to 39Ar, other dating tracers were applied, i.e. noble gases, 14C, CFCs and SF6. While radiogenic 4He served as an initial …
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Estimating Pedestrian Crashes at Urban Signalized Intersections
… previous work. An analysis of two pedestrian volume estimation methods indicates that using a scaling technique will produce volume estimates highly correlated to observed volumes. The ratio of crash and exposure estimates gives a crash rate estimation that is useful for traffic engineers and …
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Forecasting of rainfall using statistical downscaling model (SDSM) – general circulation model (GCM) for future estimation of rainwater harvesting
… future rainfall trend and harvested rainwater volume estimation for the first interval year of Δ2030 were also made. Daily rainfall series from eight (8) stations in Johor capturing 30 years period (1988-2017) with less than 10% missing data were chosen. Of all 26 predictors, only five (5) were …
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Geochemical and sedimentological investigations of Youngest Toba Tuff ashfall deposits
… terrestrial ash sediments: a) to estimate the volume of YTT ash fallout; b) to quantify variability in the geochemistry of YTT ash; c) to assess the reliability of YTT ash as a chronostratigraphic marker; and d) to determine local influences on the reworking of YTT ash deposits. Following the …
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Algorithm and Hardware Co-optimization for Image Segmentation in Wearable Ultrasound Devices: Continuous Bladder Monitoring
… cardiovascular diseases, to estimate bladder volume, continuous autonomous tissue-monitoring is essential. Recent development in wearable ultrasound patches provide the foundation of wearable ultrasound devices with on-device image processing. Collaborating with Massachusetts General Hospital, …
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Vapor-liquid Equilibrium of Polymer Solutions During Thermal Decomposition of Rigid Foams
… of the models required values for polymer volumes, a comparison of the GCVOL and GCMCM group-contribution volume estimation methods was performed. GCMCM was found to give lower overall deviations from literature polymer volume data. The models involving an equation of state required EOS …
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Design and Evaluation of a Novel Method to Noninvasively Estimate Tidal Volumes During Administration of Nasal Cannula Therapy
… a quantitative measurement of a patient's tidal volume, the volume of air inhaled with each breath. This thesis presents a novel approach to measure tidal volume using a nasal cannula with built-in pressure sensors. Pressure waveforms obtained from continuous measurement of the pressure at the …
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Shifting Emergency Department Utilization Patterns Among Vulnerable Populations During the COVID-19 Pandemic
… analysis highlighted a key predictor for ED volume in a census tract: the percent of single-parent households, indicating accessibility challenges. While the XGBoost model performed well overall (R2 = 0.96), it had limited applicability in Memphis MSA due to census tract heterogeneity. This …
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Artificial Intelligence and Spatial Modeling to Estimate Traffic Volume Measures on Local Roadways
… and complexity of traffic flow on low-volume roads. To address this gap, the research develops and compares two modeling frameworks: a non-spatial Random Forest (RF) model and an enhanced spatial RF model. Using the comprehensive Statewide Traffic Monitoring Program (STMP) and Smart …
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