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.
Results
Showing 1 to 20 of 47 for “"Speed of Light"”.
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Reducing short flows' latency in the internet
… and are widely used by applications in the form of web requests or with user interactions. These kinds of applications are extremely sensitive to latency. A small additional delay, like one or two round trip times (RTTs), may easily cause user frustration and lose usability of services. In the …
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"Spark" for wind ensemble.
… to compose an accessible and exciting piece of concert music for the wind ensemble that possesses a depth and richness rarely achieved within the medium's repertoire. The idea of a spark is expressed in various ways throughout the music, such as: electrical sparks and the starting of an …
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Precision X-ray spectroscopy of 3C 273 jet knots
… high-resolution ([delta lambda] = 0.01A) spectra of 3C 273 jet knots extracted from eight observations made using Chandra in conjunction with the HETGS. Using these spectra we searched for narrow emission line candidates and, based on significance values calculated for the observed photon counts …
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Glass population study and discrimination of glass samples using Glass Refractive Index Measurement III and scanning electron microscopy/energy dispersive X-ray spectroscopy
… nature when combined with some force, glass is often broken, and is then submitted as a type of trace evidence to a crime laboratory in cases such as hit and runs, breaking and enterings, and homicides. Broken glass is most often obtained from bottles, windows, doors, and automobiles, and can …
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Gravitational waves from a string cusp in Einstein-aether theory
The motivation of this thesis is to look for a signature of Lorentz violation, hopefully observable, in the gravitational waves emitted by cosmic strings. Aspects of cosmic strings are reviewed, in particular how focused bursts of gravitational radiation are emitted when a cusp forms on the string. …
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The cosmic ray muon energy spectum via Čerenkov radiation
… Cerenkov detector to measure the energy spectrum of cosmic ray muons for use in the graduate experimental physics courses, 8.811/2. The apparatus consists of a light-tight central volume with a phototube to detect the Cerenkov radiation of muons whose speed is higher than the speed of light in the …
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Packaging solution for VLSI electronic photonic chips
As the demand of information capacity grows, the adoption of optical technology will increase. The issue of resistance and capacitance is limiting the electronic transmission bandwidth while fiber optic delivers data at the speed of light and is only limited by scattering as well as absorption. …
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Atomistic Simulations of Antiferromagnetic Solitons and their High-Speed Dynamics
… driven by currents and achieve velocities of several kilometers per second. These solitons are massive particles and therefore cannot travel faster than a limiting velocity akin to the speed of light for the material. The specifics of these high velocity dynamics, in which solitons begin to …
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Numerical Simulations of Galaxy Formation During the Epoch of Reionization
… questions in galaxy formation during the epoch of reionization and presents multiple new computational techniques developed specifically to study this era. This work naturally divides into two main sections: 1) The formation of the first massive black holes and 2) Interpreting ALMA observations …
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Experimental demonstration of displacement noise free interferometry
… relativity describes gravity as the curvature of space-time. The theory predicts the existence of gravitational waves (GWs), which can be described as ripples in space-time propagating at the speed of light. So far no direct detection of GWs has been achieved. The sensitivities of the currently …
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Interferometric experiments towards advanced gravitational wave detectors
In 1905, Einstein postulated that the speed of light is not only finite, but that its speed in vacuum is a universal limit that no process can exceed. The Theory of General Relativity later extended this concept to include gravitational interactions, and Eddington's timely measurements of stellar …
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A Programming Model For Optimism
… advances are increasing the throughput of most aspects of computing systems. However, latency is being held back by the speed of light, particularly in distributed systems. Optimistic algorithms that "guess" the results of operations and proceed in parallel with confirmation of the guess …
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Investigating Real-Time Sonar Performance Predictions Using Beowulf Clustering
… prediction capabilities based on commercially off the shelf (COTS) hardware and software. A sonar system measures ambient noise in real-time. Based on the active sonar range scale, new ambient measurements can be available every 1 to 24 seconds. Traditional sonar performance prediction …
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ADAM : a decentralized parallel computer architecture featuring fast thread and data migration and a uniform hardware abstraction
The furious pace of Moore's Law is driving computer architecture into a realm where the the speed of light is the dominant factor in system latencies. The number of clock cycles to span a chip are increasing, while the number of bits that can be accessed within a clock cycle is decreasing. Hence, …
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Imagining the Voltage of Neurons Distributed Across Entire Brains of Larval Zebrafish
… voltage indicators (GEVIs) raise the possibility of imaging voltage of neurons distributed across brains. However, due to the high imaging speed and signal-to-noise ratio requirements of GEVIs, microscopy hardware to date has only been able to image the voltage of neurons within subregions of the …
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Test of Light Speed Constancy With Light Age Using an Active Fiber-Based Mach-Zehnder Interferometer
This thesis investigates the constancy of light speed with respect to the light age using an active fiber-based Mach-Zehnder interferometer (MZI) illuminated by sunlight. The original sunlight in one arm, which has the age of 8.3 minutes since it was emitted from the sun, interferes with the young …
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State of Being
My work speaks to the processes of adaptation and assimilation, phenomena that explain the way in which we transform life experience and incorporate the effects of such experience into the daily workings of our psyche. To this extent my work is a self-analysis, an autobiographical reckoning, a …
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Reverberation mapping of Active Galactic Nuclei
… aimed at contributing to the overall sample of active galactic nuclei (AGNs) with central super-massive black hole (SMBH) mass estimates using reverberation mapping (RM) technique. RM makes use of the time variability of the broad emission lines from the nearby broad-line region (BLR) to …
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Fluctuation-induced phenomena in non-equilibrium systems
In this thesis, we investigate the implications of fluctuations in systems away, possibly even far, from equilibrium due to their motion either in or out of thermal equilibrium. This subject encompasses several topics in physics including the dynamical Casimir effect in the presence of moving …
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Femtosecond Transient Imaging
… impulse illumination and time images. Using time-of-flight cameras and multi-path analysis of global light transport, we pioneer new algorithms and systems for scene understanding through time images. We demonstrate that our proposed transient imaging framework provides opportunities to accomplish …
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