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 18 of 18 for “"Threshold detection"”.
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EMG Threshold Detection and Reliability of Boys and Men Using an Isometric Contraction Protocol
… children grow, they utilize more of their higher-threshold (type II) motor units (MU). Such developmental changes in MU utilization can potentially underlie many observed physiological differences between children and adults. The EMG threshold (EMGTh¬) is a proposed non-invasive tool to …
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An analytic model to predict detection threshold and performance data for misconvergence on a shadow-mask CRT
… computers. The second objective was to determine detection thresholds for various levels of misconvergence of the three electron guns. When the three guns are properly registered, the luminance profiles converge and one perceives a color combination rather than the separate red, green, and blue …
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Olfactory identification, detection thresholds, and sensitivity in kidney disease patients
… Disease, there are contradictory results for detection thresholds. Some results indicate higher thresholds while others found similar thresholds or elevated thresholds for one odorant, but not others. The current study evaluated the olfactory abilities with participants diagnosed with Kidney …
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Comparator design and analysis for comparator-based switched-capacitor circuits
… techniques. The design of a low-noise threshold detection comparator using a preamplifier is discussed.
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Parametric Resampling Methods for Retrospective Changepoint Analysis
… statistics in that it provides a methodology for threshold detection and modeling processes subject to periodic changes in the underlying model due to anthropogenic effects or natural phenomena. Several applications of changepoint analysis are investigated here. The use of inappropriate …
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Temperature reconstruction and acoustic time of flight determination for boiler furnace exit temperature measurement
… in the presence of noise. Methods such as threshold detection with bandpass filtering, cross correlation, generalized cross-correlation (GCC) and a new method developed employing variable notch filters with locations and widths based on repetitive frequencies identified in the noise with …
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Mapping and Localization Using LiDAR Fiducial Markers
… letter-sized markers compatible with VFMs. A detection method locates 3D fiducials from intensity images, enabling LiDAR pose estimation. Second, an enhanced algorithm extends detection to 3D maps, increasing marker range and facilitating tasks like 3D map merging. This method leverages both …
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Transition between single and multiple stepping strategies in forward fall recovery
… length where the transition occurred (transition threshold) and the biomechanics of the first step on either side of the transition were quantified in terms of temporal, kinematic, and kinetic parameters. Results. The magnitude of the transition threshold displayed hysteresis sensitive to …
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Flexible Smart Sensor Framework for Autonomous Full-Scale Structural Health Monitoring
… for high-fidelity modal analysis and damage detection. While much of the technology associated with smart sensors has been available for nearly a decade, there have been limited numbers of full-scale implementations due to the lack of critical hardware and software elements. This research …
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Supra-Characteristic-Frequency Response in Gerbil Auditory Nerve Frequency Tuning Curves
… The main findings of this study include: The detection of the plateau threshold within the supra-CF region of the ANF tuning curve. A larger BM motion was necessary for an ANF to reach a threshold response within the plateau region than the traveling wave region, based on the previous lack of …
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Detection of signals corrupted by the combination of Gaussian and Non-Gaussian noise
The detection of signals in the presence of noise is one of the most basic and important problems encountered by communication engineers. Although the literature abounds with analyses of communications in Gaussian noise, relatively little work has appeared dealing with communications in …
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A wide-dynamic-range time-based CMOS imager
This thesis describes a novel dual-threshold time-based current sensing algorithm suitable for use in wide-dynamic-range CMOS imagers. A prototype 150 x 256 pixel imager employing this algorithm experimentally achieves 95.5 dB dynamic range, 37 dB peak signal-to-noise ratio (SNR), and a …
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Automated Visual Inspection of Lace Using Machine Vision
… was tried on the lace samples, involving threshold detection, followed by non-linear binary filtering. This could however detect only hole like defects, and could not verify the fine intricate pattern of the lace. A more powerful processing methodology was developed that compares each …
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Comparison of anaerobic and aerobic fatigue on visual skills
… components of sports vision (i.e. peripheral threshold detection and coincidence-anticipation) and may result in instantaneous improvements in sports vision performance. Thus, the primary aim of the study was to investigate the effects of short- and prolonged-duration maximal exercise effects …
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Bridge to digital converters for environmental monitoring in edge IoT devices
… a Walden FoM of 0.048 nJ/Conv-step. Finally, a threshold detection-based BDC is presented, aimed at reducing power consumption by decreasing the volume of generated output data. This design occupies 0.012 mm2 with 10 bits resolution, consuming 4.8 μW of power while operating at a clock frequency …
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Beamforming and scan pattern performance evaluation of rotating maritime multi-beam phased array surveillance radar
… different beamforming and scan patterns on the detection performance of different possible targets in the maritime environment per antenna rotation. MATLAB, with various Phased Array Toolbox objects, was used as the platform to create the simulation model. A wide variety of variables were …
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Digital pulse interval modulation for indoor optical wireless communication systems
… efficiency and bandwidth efficiency when simple threshold detection is employed.</p> <p>Indoor optical wireless systems generally operate in the presence of intense ambient light, emanating from both natural and artificial sources. Along with contributing to the generation of shot noise, …
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Highly Accurate Ultrasonic Positioning and Tracking Systems
… the TOF is estimated based on a pre-defined threshold. The proposed technique has advantages in terms of computational complexity and hardware cost when compared to the correlation technique, as in this approach TOF estimation decisions are made using threshold detection and only the received …