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 43 for “"Range Based"”.
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Ambiguities in range-based system identification
… inverse problem, and is sometimes equivalent to range-based operator recovery. The aim of this research is to study the structure of solutions for range-based identification, which is typically an affine or projective variety, and is usually ambiguous (containing more than one element - not …
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Range-based Volatility Modelling, Forecasting and Spillovers
Given the advantages of using the high-low price range to reflect price movement information, this thesis aims to investigate the forecast performance of univariate and multivariate range-based volatility models and applies these models to study volatility spillovers during Chinese stock market …
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Range-based Risk Estimation in Euro Area Countries
This dissertation considers a range of topics on the use of range-based risk estimators for financial markets (with the exception of Chapter 5 discussed below). Chapter 1 provides an introduction to the existing literature and the research objectives of the dissertation. Chapter 2 uses time series …
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Range-based navigation of AUVs operating near ship hulls
… AUV navigation often involves dead reckoning based on velocity measurements from an acoustic Doppler Velocity Log (DVL) sensor. As this strategy is inherently susceptible to drift, related efforts seek to generate vehicle position updates through either Simultaneous Localization and Mapping …
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Range-Based Autonomous Underwater Vehicle Navigation Expressed in Geodetic Coordinates
… navigation technologies. This thesis describes a range-based acoustic navigation system that utilizes range measurements from a single moving transponder with a known location to estimate the position of an AUV in geodetic coordinates. Additionally, the navigation system simultaneously estimates …
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Enhance of LCOS Phase Modulation in Visible Wavelength Range Based on Metasurface
… phase modulation capability in the visible light range is 1.45π on average. Then after increasing by 37.5%, it becomes 1.45π × (1 + 0.375) ≈ 2.0π. In optical devices, if the phase modulation range does not reach 2π, that is, one complete cycle, the wavefront cannot be modulated arbitrarily, which …
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Robust range-based localization and motion planning under uncertainty using ultra-wideband radio
… we improve upon traditional approaches to range-based localization by capturing non-linear sensor dynamics using a Monte Carlo method for hidden bias estimation. For the latter, we overcome current limitations of scalable belief space planning by adapting the Probabilistic Roadmap algorithm …
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Design of a Control System for Multiple Autonomous Ground Vehicles to Achieve a Self Deployable Security Perimeter
… vehicles. This paper presents a novel approach based on the Received Signal Strength Indication (RSSI) measurement between broadcast and receive nodes to calculate distance and using the data transfer capability to allow each vehicle to develop a table of relative positions. These relative …
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A Novel Level-of-Detail Technique for Virtual City Environments: Design and Evaluation
… We implement and evaluate a novel X3D-based Level-of-Detail technique called ProxyPrismLOD, which leverages the CityGML standard of a 4-step LOD hierarchy. For switching between different models of the same object at near ranges, our LOD technique uses a custom shape we call a …
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Physical Layer Security for Wireless Position Location in the Presence of Location Spoofing
… position location, particularly associated with range-based localization. Of particular interest are security risks and vulnerabilities in location estimation, types of localization attacks, and their impact. The second objective is to characterize the effects of signal strength and beamforming …
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Sensei : sensing educational interaction
… measure proximity between each node in a dynamic range-based mesh network. The sensors can be worn in the shoes, attached to selected landmarks in the classroom, and placed on lessons. This data, accessible to teachers in a web dashboard, enables teachers to derive deeper insights from their …
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Flow, Heat Transfer, and Pressure Drop Interactions in Louvered-Fin Arrays
… the louvered arrays over a Reynolds number range (based on louver pitch) of 75--1400, and local mass transfer data on fins are acquired for the convex-louver geometry over a Reynolds number range (based on hydraulic diameter) of 200 to 5400. Compared to flow far from the walls where spanwise …
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Analysis of non-synchronous trading effects on the pricing of Exchange Traded Products: an empirical analysis of the effects on ETP price volatility that result when the ETP instrument is listed on an exchange that is in a different time zone to that of the underlying securities basket
… for overlapping hours. By assessing a measure of range-based volatility during 15-minute intra-day intervals throughout the NYSE trading day, an understanding of the volatility profile of these ETPs is determined and analysed. It is found that non-synchronous ETPs do exhibit a higher relative …
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Packrat middens: A tool for environmental reconstruction and human adaptation analysis
… and ancient middens were tabulated by elevation range based on modern analogs to estimate the modern equivalent of the elevations of ancient middens. Differences of these reconstructed vegetation elevations relative to modern elevations of vegetation are ordered chronologically, after correction …
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Ultra-Wideband Error Modeling for Improved Localization
Ultra-wideband (UWB) is a modern range measurement technology which can provide high-speed, low-cost ranging, however UWB measurements can be difficult to model. In an effort to increase accuracy of localization using UWB, this thesis develops models to better understand the complex error patterns …
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Whole Grain Intake in College Students and its Association with Body Mass Index
… consumed 5.4±1.7 (mean±SD) servings of grain based foods per day, of which 13% (0.71±0.76 servings) were from whole grain foods. The students who were in the normal weight range (based on their BMI) consumed more servings of whole grains per day than the overweight and obese students (ANOVA …
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Distributed sensor network for sensing educational interaction in early childhood classrooms
… measure proximity between each node in a dynamic range-based mesh network and establish interaction context through motion and ambient sound data. In this system, I designed a distributed sensor network protocol to collect sensory data, a synchronized network event scheduling scheme to establish a …
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Effects of Free Stream Turbulence on Compressor Cascade Performance
… cascade of nine airfoils was tested at a range of Mach numbers between 0.59 and 0.88. The airfoils were tested at both the lowest loss level cascade angle and extreme positive and negative cascade angles about this condition. The cascade was tested in a Reynolds number range based on the …
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Real-time localization using received signal strength
… However, translating time of flight-based GPS technique for indoor solutions has proven very costly and inaccurate primarily due to the need for high resolution clocks and the non-availability of reliable line of sight condition between the transmitter and receiver. In this …
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Development of a model to explain the effect of variable membrane compliance on single molecule adhesive bond force
… to study biological forces in the piconewton range. Based on the work of Evans and others, the concept has emerged that molecular pairs do not possess characteristic bond strength, but rather that bond strength varies as a function of the rate at which a disrupting force is applied. On a …
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