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 45 for “"Reference frames"”.
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Reference Frames in Human Sensory, Motor, and Cognitive Processing
<p>Reference-frames, or coordinate systems, are used to express properties and relationships of objects in the environment. While the use of reference-frames is well understood in physical sciences, how the brain uses reference-frames remains a fundamental question. The goal of this dissertation is …
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Quantum Resource Theories for Thermodynamics, Reference Frames, and Uncertainty
… theories for measurement uncertainty and reference frames; in fact, the resource-theoretic treatment of thermodynamics is a combination of these two. Our approach is based on a model called thermal operations, applicable on individual quantum-mechanical systems out of thermal equilibrium. …
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Understanding the effect of cognitive reference frames on unmanned aircraft operations
… displays that are often oriented on misaligned reference frames. One example unmanned aircraft mission includes a target described on a north-up reference frame, such as a map. The pilot plans a flight path, to this target, on a north-up map, but controls the aircraft along that flight path …
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What's Up with High- and Low-Pitched Sounds? Reference Frames used in the Crossmodal Correspondence Between Auditory Pitch and Visuospatical Height
… self-orientation? And what spatial frame(s) of reference is used to perceptually bind these crossmodal features? In experiment 1, participants’ Perceptual Upright (PU) was measured with and without presented auditory orientation cues but there was no effect of sound. In experiment 2, the biasing …
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A Development of a New Approach to the Static Axially Symmetric Einstein- Maxwell Field.
… of the laws of physics in all inertial reference frames. They differ in that the postulate of the constancy of the velocity of light holds in special relativity. On the other hand, the premise of general relativity is that the laws of physics be expressed in generally covariant …
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Reference frame definition, use, and interaction in spatial memory
… among research groups with some concluding reference frames are self-based (egocentric), while others conclude spatial representations are independent from the self (allocentric or intrinsic). This research presents novel methods to assess spatial reference frame use in memory. Chapter 1 …
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Entanglement, uncertainty and relativity in fundamental mechanics with an application in QKD
… making measurements from different relativistic reference frames and resolve some on the tension between quantum mechanics and relativity. Finally I utilize the practical aspect of quantum uncertainty and describe a practical quantum key distribution scheme.
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Assessment of direct methods in power system transient stability analysis for on-line applications
… of a power system allows the use of two reference frames: Center of angle and one machine as reference. Formulae allowing transition between the two reference frames are derived. It is shown that the transient energy in both formulations is the same, and that line resistances do not …
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Comparison of nonlinear finite element formulations: application to trusses
… an overview of the Total and Updated Lagrangian reference frames, serve as the starting point for this review. The two nonlinear formulations are specialized for use with a geometrically nonlinear plane truss finite element. The truss formulations are then implemented into separate geometrically …
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Computational Complexity Optimization on H.264 Scalable/Multiview Video Coding
… in multiple-view video coding. The inter-view reference frames from the adjacent views are exploited for prediction in addition to the temporal prediction. However, due to the increase in the number of reference frames, the computational complexity is also increased. In order to manage the …
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Antenna axis offset and intersection determination using GPS
… how GPS is used to determine the offset and VLBI reference point. Several algorithms for calculating these parameters are investigated and evaluated. Methods are developed to minimise the size and influence of errors. An evaluation and comparison of the results to previous independent …
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"Moving Bodies: James Joyce and the ""New Physics"""
… of art draws from out-dated Newtonian absolute reference frames. Contrary to this, Joyce represents himself as a ""soft,"" Einsteinian modernist, who (though flawed) privileges an intuitive, subjective, humanist agenda."
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Images in motion?: a first look into video leakage in federated learning
… extractors and another that processes raw video frames with simple transformations. Our results indicate that the use of feature extractors offers greater resilience against gradient inversion attacks. We also demonstrate that image super-resolution techniques can enhance the frames, extracted …
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Minimalist Models and Methods for Visibility-Based Tasks
… (e.g., distances or angles), or global reference frames (e.g., without a compass, or a global positioning system). These combinatorial events served as the base of a sensor beam abstraction, from which several inferences about the path followed by the robot are made.
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Cognitive requirements for aircraft navigation
… the maintenance of a cognitive link between two reference frames (RFs)--the ego-centered reference frame (ERF) and the world-centered reference frame (WRF). The ERF corresponds to the pilot's forward view of the world and the WRF corresponds to a north-up geographic map. The new map display …
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Model predictive control for formation flying spacecraft
… of relative motion expressed in both Cartesian reference frames and Keplerian orbital elements, including new initialization techniques for widely spaced passive apertures with very general formation configurations. Also, a new linear time-varying form of the equations of relative motion is …
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Aerodynamic Modeling Using Computational Fluid Dynamics and Sensitivity Equations
… CFD formulations to general non-inertial reference frames. Generalized Navier-Stokes and Euler equations have been derived. The formulation is valid for all ranges of Mach numbers including transonic flow. The method was implemented numerically for the planar case using the generalized …
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Large contribution of light-dependent oxygen uptake to global O2 cycling
… corresponding air observations in two laboratory reference frames, and 3) puzzling discrepancies between concurrently measured Δ′17O-gross oxygen productivity and 14C-net carbon productivity rates in the ocean. We also discuss how variations in the extent of Mehler-like reactions complicate …
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