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 316 for “"Phase-shift"”.
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The Phase-Shift Analysis of Nuclear Cross-Section Data
Made available in DSpace on 2015-05-12T17:11:45Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0006962.PDF: 2265444 bytes, checksum: f6e2955547d67a1ff8f4557585dca2a9 (MD5) Previous issue date: 1953
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Laser-induced heating, phase-shift, and damage : measurements and simulations
… Laser-induced optical pathlength modulation or phase-shift was computed to study the thermal lensing effect. Power and irradiance damage thresholds were calculated for collimated and focused geometries to study the effect in a focusing eye on retinal damage thresholds.
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Operational Use of Specific Differential Phase Shift in Dual Polarization Radars
Specific differential phase shift is one of three new base products that have become available to operational weather forecasters since the WSR-88D upgrades were completed in May 2013. Though most often used as a component in quantitative precipitation estimates, this research focused on …
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Estimating the constant phase shift term directly from the seismic data
Includes bibliographical references.
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Determination of seismic attenuation using observed phase shift in sedimentary rocks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1982.
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A 1.25 gigabit per second binary-phase-shift-keyed optical homodyne receiver
Thesis (S.B. and S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Phase Shift Control: Application and Performance Limitations With Respect to Thermoacoustic Instabilities
… and is often impractical on a large scale. Phase shift control of the instabilities is perhaps the simplest and most popular technique employed but often does not provide good performance in that controller induced secondary instabilities are generated with increasing loop gain. This thesis …
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Investigating neuronal network dynamics : scale-invariance, preferred firing rates, and plasticity via phase-shift encoding
… conditions. In particular, the role of phase-shift encoding in driving network adaptability and plasticity has not been thoroughly explored. Here, we show that neuronal networks can dynamically integrate and process complex stimuli through phase-space modulation using a novel phase-shift …
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Simulation of a binary phase shift keyed receiver with an IF correlator for position location
… conducts a feasibility study of using a binary phase shift keyed receiver with an IF correlator in a position location application. The feasibility study is done using mathematical simulation. Traditionally the correlator, in a binary phase shift keyed receiver, is placed after the data …
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Fabrication Techniques and Modeling for Unusual Optical Systems: Near Field Phase Shift Lithography and Plasmonic Sensors
… samples. Soft lithographic techniques, including phase shift lithography and replica molding, have the potential to solve this long-standing problem if applied to the fabrication of novel plasmonic crystals. I used Finite-Difference Time-Domain (FDTD) calculations to model their optical response …
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An Examination of the Effects of Cochlear Microphonic Neutralization via Phase-Shift on the Eighth-Nerve Potential
Made available in DSpace on 2015-05-12T22:40:12Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7411984.PDF: 2052152 bytes, checksum: 7567d3f0df4329f691676c45a06363f6 (MD5) Previous issue date: 1973
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A Novel High-Power High-Efficiency Three-Phase Phase-Shift DC/DC Converter for Fuel Cell Applications
… in high power dc/dc applications. Although multiphase converters have been proposed, most of them are dealing with high input-voltage systems, and their device characteristic is not suitable for a low voltage source such as a fuel cell. For a high power fuel cell system, high voltage conversion …
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Trellis Coded Modulation Schemes Using A New Expanded 16-Dimensional Constant Envelope Quadrature-Quadrature Phase Shift Keying Constellation
… Constant Envelope Quadrature-Quadrature Phase Shift Keying constellations. Optimal demodulators for the two constellations are presented, and one of them was designed and implemented by the author. In addition, a novel expanded 16-dimensional CEQ2PSK constellation that doubles the number …
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Measuring atomic properties with an atom interferometer
… and the interference pattern exhibits a phase shift depending on the strength of the interaction. In the first experiment, the interaction involves a gas. De Broglie waves traveling through the gas experience a phase shift represented by an index of refraction. By measuring the index of …
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Terfenol based optical phase modulator and magnetometer
Two new fiber optic magnetostrictive phase modulators and magnetometers using the highly magnetostrictive rare-earth iron compound Tb<sub>x</sub>Dy<sub>l-x</sub>Fe₂ are investigated. They demonstrated to have a high sensitivity, dynamic range, minimum field detectability, and a better structural …
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COHERENT DETECTION OF SCATTERED LIGHT BY SUBMICROMETER AEROSOLS.
… light available in a laser beam to measure the phase shift in the scattered light, which is fundamentally different from previous intensity based techniques. The Van-Cittert-Zernike theorem shows that scattered light from small particles will be coherent if viewed upon at the focal point of a …
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Analysis of digital communication signals and extraction of parameters
… communication signals considered include Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Frequency Shift Keying (FSK), and On-Off Keying (00K). The analysis emphasizes the use of available signal processing software. Detection methods compared include broadband energy …
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An analysis of pion-nucleon scattering
A phase-shift analysis of elastic pion-nucleon scattering data g from threshold to a pion kinetic energy of 1100 MeV was performed. The resulting partial-wave amplitudes were investigated in the complex energy plane, and the resonance states with their associated zeros and poles were determined. …
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