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 176 for “"Detectability"”.
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Prediction of modulation detectability thresholds for line-scan displays
Determination of some form of modulation detectability threshold for sinusoidal gratings is a prerequisite to use of most measures of image quality for line-scan imaging systems. To develop predictive models for these thresholds, an experiment was conducted to determine the modulation detectability …
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Detectability of Self-Lensing Supermassive Black Hole Binaries in Quasars
Active galactic nuclei (AGN) or quasars are distant and luminous objects thought to be powered accretion into supermassive black holes (SMBHs) whose luminosity rivals that of their local galaxy. Since most galaxies are thought to contain SMBHs and galaxies commonly merge, it is likely that some AGN …
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Detectability of biosignature gases in the atmospheres of terrestrial exoplanets
… modeled transmissivity spectra, I determine the detectability of a range of atmospheric mixing ratios for ten biosignature gases from the HIgh-resolution TRANsmission molecular absorption (HITRAN) database: oxygen, ozone, methane, nitrous oxide, methyl bromide, methyl chloride, hydrogen sulfide, …
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Developing the detectability, identifiability, and trackability analysis for the space sustainability rating
Three of the core activities in maintaining Space Situational Awareness (SSA) efforts are the Detection, Identification, and Tracking of Anthropogenic Space Objects (ASOs). For much of the space age, the onus for improving global SSA has fallen primarily on the ground-based satellite surveillance …
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Incentivizing Collaboration on Space Sustainability: Detectability, Identifiability, and Trackability of Space Missions
… in the Space Sustainability Rating is the Detectability, Identifiability, and Trackability (DIT) module. This thesis builds on the earlier work that was done to develop the first version of the DIT module and makes three primary contributions to it. First, it investigates using the …
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Detectability, movement, and population structure of the endangered Candy Darter in Virginia
Minnows and darters are the most imperiled freshwater fish species in North America as a result of habitat degradation and restricted ranges, which often results in isolated populations. The Candy Darter Etheostoma osburni was recently listed as Endangered and may represent a suite of other …
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Detectability of dynamical tidal effects and the detection of gravitational-wave transients with LIGO
Dynamical tidal effects impact the orbital motion of extended bodies, imprinting themselves in several measurable ways. This thesis explores the saturation of weakly nonlinear dynamical tidal interactions within two very different systems: hot Jupiters orbiting main-sequence hosts with radiative …
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Gravitational radiation detectability of supernova 1987A's remnant fully matched filter for double resonant gravitational detector
Part I There is some observational evidence of the presence of a pulsating light source in the remnant of the supernova (SN) 1987A [1]. This source is considered to be a rotating neutron star. Fourier analysis of the light intensity of this source reveals a main narrow frequency peak and side bands …
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Habitat Selection, Dispersal and Detectability of Cobblestone Tiger Beetles (Cicindela marginipennis Dejean) along the Genesee River, New York
… their natural history; and (5) determine their detectability in the riparian habitat along the Genesee River, NY. Data on cobblestone tiger beetle habitat selection and populations established a baseline for monitoring environmental change and population status of this species of management …
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The Role of Harm, Detectability, and Knowledge of HIV Non-Disclosure Laws in Affecting Punishment Recommendations for HIV Law Violators
… punishment recommendations. A 2 (Harm) X 2 (Detectability) X 2 (HIV Law Knowledge) ANOVA design was utilized, with punishment recommendations (i.e., prison sentence and fine) as the dependent measures (N = 224). Research questions pertaining to potential explanations (e.g., moral outrage, …
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The influence of probability of detection when modeling species occurrence using GIS and survey data
… the species, I experimented to estimate detectability for a salamander species. Based on these estimates, I investigated the sensitivity of habitat models to varying detectability. Models were created using a database of amphibian and reptile observations at Fort A.P. Hill, Virginia, USA. …
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Auditory-nerve and energy-detection models of temporal summation in hearing: a theoretical and experimental investigation
… 2 examined the effect of rise/decay time on the detectability of brief bursts of, or gaps in, broadband noise: when the energy change was constant, 1here was no effect except at long (100 msec) rise/decay times. Experiments 3 and 4 assessed the detectability of bursts of, and gaps in, a tone …
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Investigation of the Function of the Olivocochlear Efferent Nerve Pathway in Humans
… were used to investigate the change in monaural detectability of signals (broadband, high frequency, and low frequency noise; and 1-kHz tones, 7-kHz tones, and 100-µs clicks embedded in background noise) under a range of contralateral noise stimulation (from none to 80 dB SPL). Additionally, …
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Enhancing Power Side-Channel Detection of Attacks to Additive Manufacturing Systems
… key algorithm parameters, their effect on attack detectability, and their effect on required computational resources. By manipulating these parameters, it is possible to increase the detectability of attacks. Through this, we demonstated the detction of extrusion rate change attacks and smart void …
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Quantitative Analysis of Ultrasound Images of the Preterm Brain
… to increase the qualitative diagnosis from a 70% detectability to a 98% quantitative detectability.
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Qualitative Adaptive Identification for Powertrain Systems. Powertrain Dynamic Modelling and Adaptive Identification Algorithms with Identifiability Analysis for Real-Time Monitoring and Detectability Assessment of Physical and Semi-Physical System Parameters
… and synthesis system identification tools for detectability assessment and adaptive identification of parameters with physical interpretation that can be found commonly in control-oriented powertrain models is presented. This research is motivated from the fact that future powertrain control …
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An Evaluation of Laboratory and Test Road Environments and Electric Vehicle Warning Sounds and Systems
… vehicle. This thesis explores pedestrian aural detectability of six electric vehicle additive sounds produced by two additive sound systems: a modified version of the factory equipped system and a prototype exciter transducer-based system. All additive sounds and systems were first evaluated for …
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Locating Structural Damage in Real Time Using Contrast Maximization
… to develop the average angle technique. A damage detectability measure is defined which, for a given level and location of damage and a given amount of modeling and measurement errors, compares the magnitude of the damage to the magnitude of errors in a single number. The success of the average …
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