Browsing Bradley Department of Electrical and Computer Engineering by Title
Now showing items 204-223 of 602
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Fabry-Perot Fiber-Optic Sensors in Full-Scale Fatigue Testing on an F-15 Aircraft
(Optical Society of America, 1992-02-01)We report results from fiber-optic-sensor field tests on an F-15 aircraft mounted within a full-scale test frame for the purpose of fatigue testing. Strain sensitivities of the order of 0.01 _m/m have been obtained. -
Facilitating the Transition to an Inverter Dominated Power System: Experimental Evaluation of a Non-Intrusive Add-On Predictive Controller
(MDPI, 2020-08-16)The transition to an inverter-dominated power system is expected with the large-scale integration of distributed energy resources (DER). To improve the dynamic response of DERs already installed within such a system, a ... -
Fast Extended Depth-of-Field Reconstruction for Complex Holograms Using Block Partitioned Entropy Minimization
(MDPI, 2018-05-21)Optical scanning holography (OSH) is a powerful and effective method for capturing the complex hologram of a three-dimensional (3-D) scene. Such captured complex hologram is called optical scanned hologram. However, ... -
Fast generation of Fresnel holograms based on multirate filtering
(Optical Society of America, 2009-12-01)One of the major problems in computer-generated holography is the high computation cost involved for the calculation of fringe patterns. Recently, the problem has been addressed by imposing a horizontal parallax only ... -
Fast Method of Recovering Reference-Wave Intensity in Two-Step-Only Quadrature Phase-Shifting Holography
(MDPI, 2017-10-19)We present a simple yet effective method, without the need for any additional recording of intensity maps or tremendous iterative computations, to recover reference-wave intensity resulting from the complex hologram acquired ... -
Fast multi-level test generation at the RTL
(2016-07)Functional, at-speed vectors continue to provide added value to the testing community as circuit complexity rises. Complex defects may escape traditional scan vectors and thus often require at-speed patterns. However, ... -
Fast numerical generation and encryption of computer-generated Fresnel holograms
(Optical Society of America, 2011-03-01)In the past two decades, generation and encryption of holographic images have been identified as two important areas of investigation in digital holography. The integration of these two technologies has enabled images to ... -
Fast-Fourier-Transform Based Numerical Integration Method For The Rayleigh-Sommerfeld Diffraction Formula
(Optical Society of America, 2006-08-01)The numerical calculation of the Rayleigh-Sommerfeld diffraction integral is investigated. The implementation of a fast-Fourier-transform (FFT) based direct integration (FFT-DI) method is presented, and Simpson's rule is ... -
Fast-Neutron Radiation Effects in A Silica-Core Optical-Fiber Studied By A Ccd-Camera Spectrometer
(Optical Society of America, 1994-05-01)A simple CCD-camera spectrometer was deployed at the Los Alamos Spallation Radiation Effects Facility to characterize fast-neutron irradiation effects in several silica-based optical fibers over the wavelength range ... -
A feasibility study to use machine learning as an inversion algorithm for aerosol profile and property retrieval from multi-axis differential absorption spectroscopy measurements
(2020-10-16)In this study, we explore a new approach based on machine learning (ML) for deriving aerosol extinction coefficient profiles, single-scattering albedo and asymmetry parameter at 360 nm from a single multi-axis differential ... -
Fermi level unpinning of GaSb (100) using plasma enhanced atomic layer deposition of Al2O3
(AIP Publishing, 2010-10-01)N-type and p-type GaSb metal-oxide-semiconductor capacitors (MOSCAPs) with atomic-layer-deposited (ALD) and plasma-enhanced-ALD (PEALD) Al2O3 dielectrics are studied to identify the optimum surface preparation and oxide ... -
Fiber Designs with Significantly Reduced Nonlinearity For Very Long Distance Transmission
(Optical Society of America, 1998-09-01)A class of low-nonlinearity dispersion-shifted fibers based on depressed-core multistep index profiles is investigated. A systematic approach for designing these fibers in which a reference W-index profile is used to ... -
Fiber Fabry-Perot Sensors For Detection Of Partial Discharges in Power Transformers
(Optical Society of America, 2003-01-01)A diaphragm-based interferometric fiber optic sensor that uses a low-coherence light source was designed and tested for on-line detection of the acoustic waves generated by partial discharges inside high-voltage power ... -
Fiberoptic Temperature Sensors Based on Differential Spectral Transmittance Reflectivity And Multiplexed Sensing Systems
(Optical Society of America, 1995-07-01)A concept for optical temperature sensing based on the differential spectral reflectivity/transmittance from a multilayer dielectric edge filter is described and demonstrated. Two wavelengths, lambda(1) and lambda(2), from ... -
Field-aligned current reconfiguration and magnetospheric response to an impulse in the interplanetary magnetic field B-Y component
(American Geophysical Union, 2013-06-16)When the interplanetary magnetic field (IMF) is dawnward or duskward, magnetic merging between the IMF and the geomagnetic field occurs near the cusp on the dayside flanks of the magnetosphere. During these intervals, flow ... -
A Finite Element Analysis Model for Partial Discharges in Silicone Gel under a High Slew Rate, High-Frequency Square Wave Voltage in Low-Pressure Conditions
(MDPI, 2020-05-01)Wide bandgap (WBG) devices made from materials such as SiC, GaN, Ga2O3 and diamond, which can tolerate higher voltages and currents compared to silicon-based devices, are the most promising approach ... -
First Simultaneous Lidar Observations of Thermosphere-Ionosphere Fe and Na (TIFe and TINa) Layers at McMurdo (77.84 degrees S, 166.67 degrees E), Antarctica With Concurrent Measurements of Aurora Activity, Enhanced Ionization Layers, and Converging Electric Field
(2020-10-28)We report the first simultaneous, common-volume lidar observations of thermosphere-ionosphere Fe (TIFe) and Na (TINa) layers in Antarctica. We also report the observational discovery of nearly one-to-one correspondence ... -
Forecast Results (Test Results for FaaS Framework)
(2014-04-03)Forecast results received by an user of the FaaS Framework. -
Four-phase interleaved TCM DC-DC buck converter with matrix inductor in battery charging application
(2021-01)In this paper, a 1-kW DC-DC buck converter with a four-phase interleaved matrix inductor is proposed for battery charging applications. It is well-known that the DC bias on the inductor will cause high core loss as it ... -
FPGA Dynamic Power Minimization through Placement and Routing Constraints
(2006-08-29)Field-programmable gate arrays (FPGAs) are pervasive in embedded systems requiring low-power utilization. A novel power optimization methodology for reducing the dynamic power consumed by the routing of FPGA circuits by ...
