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 13 of 13 for “"Coefficient of variation (COV)"”.
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The effect of stiffness and mass on the dynamic response of wood floors
This thesis describes the effects of coefficient of variation (COV) of joist modulus of elasticity (MOE), floor mass and stiffness, imposed load, and boundary conditions on the floor vibrational performance. Three main parameters used to describe the vibration are resonant frequency, damping ratio, …
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A Study Of The Mechanical Behavior Of Composite Materials Exposed To Corrosive Environments
… study was conducted to examine the degradation of commercially pultruded uni-directional e-glass composites. The case study specimens, including a variety of commercially pultruded polyester/e-glass and vinylester/e-glass composites were exposed to corrosive environments, namely: distilled water …
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Gender differences in mandibular bone mineral distribution with aging
ABSTRACTObjectives: The purposes of this study were to determine 1) if cone beam computed tomography (CBCT) can determine relative differences in bone mineral density distribution using clinical images of patients’ mandibular bone and 2) if the relative differences can be used to detect the effects …
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Intraindividual Variability as a Correlate of White Matter Decline
… has not been contextualized with other aspects of cognitive performance and neuroanatomical structure, in particular with median reaction time and estimates of gray matter. Using cognitive composites derived from three attentional tasks (Stroop, Simon, and CVOE switching), in conjunction with …
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Combustion characteristics of a spark ignition engine operating with liquid lpg injection
… among the primary reasons that lead to the usage of alternative fuels in internal combustion engines. Liquefied petroleum gas (LPG) is one of the most popular alternative fuels for spark ignition (SI) engines that received lots of attention due to its availability and acknowledged superior …
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Measurement and modelling of combustion in a spark ignition engine
A study has been conducted into the causes of cycle by cycle variations in combustion within a spark ignition engine, the best measured engine parameter to use for its characterization, and the effects that: ignition timing, equivalence ratio, fuel type, throttle position and knock, have upon it. A …
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In-Vivo Ct Dosimetry During Virtual Colonoscopy
… and Medicaid Services (CMS) partially because of potential risks from radiation exposure. To date, no in‐vivo organ dose measurements have been performed for MDCT scans; thus, the accuracy of any current dose estimates is currently unknown.</p> <p>In this study, two TLDs were affixed to the …
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Double volumetric navigators for real-time simultaneous shim and motion measurement and correction in Glycogen Chemical Exchange Saturation Transfer (GlycoCEST) MRI
… role in systemic glucose homeostasis. The study of muscle glycogen concentrations in vivo still largely relies on tissue sampling methods via needle biopsy. However, muscle biopsies are invasive and limit the frequency of measurements and the number of sites that can be assessed. Non-invasive …
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Stochastic Analysis Of Storm-Surge Induced Infrastructure Losses In New York City
Hurricanes are among the most catastrophic types of natural hazards, with the potential to cause serious losses in lives and property. While hurricanes rarely have a huge impact on the New York City area, they do have the potential to cause major damage to the city's transportation infrastructure. …
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Pore-scale Study of Flow and Transport in Energy Georeservoirs
… -deposition patterns in a hydraulic fracture is of critical importance to sustain effective and economical production of petroleum hydrocarbons. In this research, a numerical modeling approach, combining the discrete element method (DEM) with the lattice Boltzmann (LB) simulation, was developed …
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Modelling the effects of soil variability and vegetation on the stability of natural slopes.
… the inherent soil variability and the effect of vegetation, in particular the effect of tree root reinforcement, have a significant effect on the stability of a natural slope. However, in practice, these factors are not commonly considered in routine slope stability analysis. This is due …
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A Regional Study on Champlain Sea Clay: Empirical Prediction of Consolidation Parameters and Statistical Characterization of Undrained Shear Strength Based on Historical Geotechnical Data
… challenges associated with the performance of geo-infrastructures on Champlain Sea Clay (CSC) deposits, with a particular focus on the Ottawa Valley region of Eastern Ontario. CSCs are highly compressible sensitive marine clays, which pose serious risks both with respect to deformation as …
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Evaluating soil pressures on a deep foundation element due to liquefaction-induced lateral spreading
The behavior of bridge foundations during earthquakes includes the inertial response of the foundation and superstructure system, and the kinematic forces induced by the lateral spreading ground. Both must be analyzed in practice to design a bridge foundation, or other foundation type, subject to …