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 “"localization errors"”.
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An Investigation of Peripheral Localization Errors in Older Adults
… focal attention. This explanation of peripheral localization difficulties in older adults posited that some older adults have a slowing in the ability to disengage attention from the center target in the UFOV paradigm. Three hypotheses were tested based on this explanation. The second explanation …
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The Effects of Sound Cue Characteristics on Overcoming Front/Back Localization Errors in a 3-D Auditory Display
… 3-D auditory display sound stimulus to increase localization accuracy. Previous literature has provided evidence that localization accuracy for direct front and direct back regions is significantly worse than that of locations in the periphery for virtual 3-D auditory stimuli. In the study …
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Network navigation with scheduling
… affects the time evolution of agents' localization errors. The key to achieve high navigation accuracy and efficient channel usage is to maximize the benefit from agents' inter-node measurements. Therefore, it is critical to design scheduling algorithms that decide for each agent with …
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The Useful Field of View of Reading Disabled Children
… of a central target simultaneously with localization of a peripheral target at eccentricities of 10, 20, or 30 degrees. The third subtest requires the same responses but adds visual distractors with the peripheral target. The reading disabled subjects required longer durations to achieve …
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Intelligent energy efficient localisation in wireless sensor networks
… should know its geographic position coordinates. Localization solutions, such as GPS are not feasible due to their energy cost and size. Hence, sensor nodes estimate their positions using an algorithm. This thesis focuses on the localization of sensor nodes and related key issues, such as …
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LOCALIZATION ABILITIES OF PERSONAL AUDIO DEVICE USERS
… measures of preferred listening levels and a localization task were conducted in these listening situations with three different headphones as well as in an open ear condition. On average, listeners increased the music levels by 28 dB in the traffic noise (with smaller increases with …
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Microsecond Time Synchronization for Computing Fiber Networks
… time synchronization method and time localization system for a sensor network of spatially-separated, low-power Bluetooth nodes, with the goal of integrating this system into thermally-drawn computing fibers. Each node consists of an nRF54L15 SoC paired with an ICS-43434 digital I2S …
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Microphone Array Based Sound Source Detection and Localization with Beamforming, GCC-PHAT, and Triangulation using Arduino and MATLAB
… arrays are becoming popular for sound source localization (SSL). Keeping real-time applications in mind, such as search and rescue missions, military operations for gunshot detection, scream based localization, etc., it will help us understand how important sound localization is for people’s …
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Exploring Maneuvering Strategies for Heterogeneous Cooperative Navigation in Underwater Environments
… underwater vehicles (AUVs) experience unbounded localization errors when operating below the surface. Range measurements between vehicles can be utilized to improve localization estimates. We define a two-agent team composed of a leader and a follower, in which the former has better navigational …
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Effect of Sound Cue Frequency Filters on Front/Back Localization Performance for Three-Dimensional Verbal and Non-Verbal Warnings
… technology is the increase in front and back localization errors in which a listener may confuse the location of the warnings. Mistakes in localization may be dangerous in flight, especially when locating such hazards like air traffic.</p> <p>This study compares both verbal and non-verbal …
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Sensor network localization based on natural phenomena
Autonomous localization is crucial for many sensor network applications. The goal of this thesis is to develop a distributed localization algorithm for the PLUG indoor sensor network by analyzing sound and light sensory data from naturally occurring background phenomena as well as synthesized …
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Quantifying The Magnitude of to tal Dose Deviation Caused By Various Sources of Error Among Iroc Phantom Irradiation Results
… work was to investigate the various types of errors that may occur during the treatment process and quantify the magnitude of their contribution to planned treatment planning system (TPS) to measured TLD phantom dose deviation (TPS vs TLD dose deviation).</p> <p>First, a preliminary study was …
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A Multi-Sensor Passive Occupant Localization
Indoor localization has emerged as a critical technology for enhancing the functionality and efficiency of smart environments. This dissertation focuses on vibro-localization, a novel IOL methodology that determines occupant positions by analyzing floor vibrations caused by footfall patterns. …
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Online 3D Reconstruction and Ground Segmentation using Drone based Long Baseline Stereo Vision System
… clouds. To correct and control orientation and localization errors, it fits re-projected UAV positions on GPS recorded UAV positions using iterative closest point (ICP) algorithm as the correction step. A new but computationally intensive process of use of superpixel clustering and plane fitting …
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An Automated Ultrasound Calibration Framework Incorporating Elevation Beamwidth for Tracked Ultrasound Interventions
… the ultrasound beam pattern that gives rise to localization errors and imaging uncertainties. In this thesis, we aim to provide an automated, pure-computation-based, intraoperative calibration solution that also incorporates the slice thickness to improve the calibration accuracy, precision and …
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Enabling methodologies for optimal coverage by multiple autonomous industrial robots
… in base placements, due to sensing and localization errors, need to be accounted for if necessary. Coverage path planning, i.e. generating the AIRs’ end-effector path, is another problem that needs to be addressed. Coverage path planning needs to be adaptable with respect to dynamic …
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Effect of Occlusion, Directionality and Age on Horizontal Localization
<p>Localization acuity of a given listener is dependent upon the ability discriminate between interaural time and level disparities. Interaural time differences are encoded by low frequency information whereas interaural level differences are encoded by high frequency information. Much research has …
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On-board Robotic Multi-pinhole SPECT System for Region-of-interest (ROI) Imaging
… information for treatment planning and target localization. Recently, studies have shown that treatment planning based on functional and molecular information about the tumor and surrounding tissue could potentially improve the effectiveness of radiation therapy. However, current on-board …
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Decentralized Multiagent Trajectory Planning in Real-World Environments
… share their future trajectories. However, due to localization errors/uncertainties, trajectory deconfliction can fail even if trajectories are perfectly shared between agents. To address this issue, we first present PARM and PARM*, perception-aware, decentralized, asynchronous multiagent …
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Il ruolo del collicolo superiore nell'orientamento spaziale
… using S-cone distractors, invisible to the SC, localization errors were similar to those observed in the distractor-free condition. Conversely, with long-wavelength distractors, visible to the SC, saccadic localization error and variability were significantly greater than in either the …
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