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 14 of 14 for “"Speed Variability"”.
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Modeling Traffic Dispersion
… dispersion is modeled as differences in desired speed selection, or speed variability. The dissertation first investigates the corresponding steady-state behavior of the car-following models used in popular commercially available traffic microsimulation software and classifies them based on their …
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Processing Speed and Executive Abilities in Children with Phenylketonuria
… This study was conducted to examine processing speed, variability in processing speed, and the relationship between processing speed variables and executive abilities in children with early- and continuously-treated PKU. Method: Participants were 42 children with PKU and 81 typically-developing …
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Effects of internal waves on low frequency, long range, acoustic propagation in the deep ocean
… propagation through internal-wave-induced sound-speed fluctuations are explored experimentally and theoretically. The thesis starts with the investigation of the North Pacific Acoustic Laboratory 98-99 data by exploring the space-time scales of ocean sound speed variability and the contributions …
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Analytic model for matched-filtered scattered intensity of volume inhomogeneities in an ocean waveguide calibrated to measured seabed reverberation
… and actual measurements of bathymetry and sound speed at the experimental locations. Monte Carlo simulations are used to account for the sound speed variability in the ocean waveguide due to internal waves or other sources of acoustic field randomization. The computationally efficient …
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Human physical interaction with a circular constraint
… (clockwise and counterclockwise), and in three speed conditions (slow (0.075 rev/s), medium (0.5 rev/s), and fast (2 rev/s)). We made several predictions about the dependent measures including: mean speed, standard deviation of speed, coefficient of variation of speed, mean normal force, and …
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Effects of internal waves on low frequency, long range, acoustic propagation in the deep ocean
… propagation through internal-wave-induced sound-speed fluctuations are explored experimentally and theoretically. The thesis starts with the investigation of the North Pacific Acoustic Laboratory 98-99 data by exploring the space-time scales of ocean sound speed variability and the contributions …
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Modeling the effects of aircraft flight track variability on community noise exposure
… of capturing the noise impacts of flight track variability. This thesis develops a model for this purpose. First, twenty days of radar flight trajectory data from 2015 and 2016 at Boston Logan International Airport (KBOS) is used to quantify the observed distributions of variability in speed, …
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Aging, Gait Variability, and Adaptability
… the relationships between age, measures of gait variability, and locomotor adaptability. Measures of gait variability are used to identify maladapted locomotor behavior, motor disease, and risk of falls. The first aim was to determine the relationships between age and measures of gait …
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Ice-ocean interactions beneath the north-western Ross Ice Shelf, Antarctica
… to the site. Tides account for half of the flow speed variance, and low frequency variability is influenced by local winds, and eddies associated with sea ice production in the polynya. Four years of basal melt rate observations show a mean melt rate of 1.8 m y$^{-1}$ at the mooring site and a …
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Caracterización de la capacidad y parámetros representativos de distintos sistemas de transporte público urbano bajo distinto tipo de infraestructura y grado de reserva de plataforma
… platform; and second, the analysis of the speed variability according to the running way and busway segregation barrier. Both aspects are characterized by means of an efficient sampling in the bus lines numbers 70 and 27 of the Transports Municipal Company in Madrid-Spain, and the line 1 of …
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The Influence of the Initiation of a Graded Exercise Protocol on Dynamic Postural Stability Following a Concussion
… with moderate intensity exercise. Gait variability, defined as the fluctuation in gait characteristic between steps, is a sensitive measure of postural stability in populations with higher level gait disorders. Objective: The purpose of this study was to examine the influence of a …
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Quantifying the Impact of Traffic-Related and Driver-Related Factors on Vehicle Fuel Consumption and Emissions
… (i.e. Mobile5 and EMFAC7) uses the average speed as a single explanatory variable. However, up to date there has not been a systematic attempt to quantify the impact of various travel and driver-related factors on vehicle fuel consumption and emissions. This thesis first systematically …
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Self-paced treadmill as a rehabilitation tool for recovering functional gait in people with stroke
… evidence of improvement to fitness and walking speed. These changes are not, however, translated to improved ability or participation in community walking which is an important goal of rehabilitation. When combined with an immersive virtual reality environment, self-paced treadmill (in which the …
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Interannual variability and long-term trends of surface hydrography around the Prince Edward Island Archipelago, Southern Ocean
… study of ecosystem response to intrinsic climate variability in the Southern Ocean and the impact of climate change. They are positioned in the Polar Frontal Zone, which is constrained by the subAntarctic Front and the Antarctic Polar Front, all of which are part of the strong, uninterrupted …