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 23 for “"Source Modeling"”.
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Voice source modeling and analysis of speakers with vocal-fold nodules
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1998.
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GIS for source water assessment and nonpoint source modeling in the Las Vegas Valley
… contamination and protection of drinking water sources in the Las Vegas Valley. A Geographic Information System (GIS) was used to identify source water protection zones and to estimate nonpoint source loads for the entire watershed; The extent of the source water protection zones is represented …
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Crustal deformation source monitoring using advanced InSAR time series and time dependent inverse modeling
… data. Furthermore, to better understand the source of such spatiotemporal deformation fields, I present novel static and time dependent model inversion approaches. Almost any interferograms include areas where the signal decorrelates and is distorted by atmospheric delay. In this thesis I …
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Acoustic emission signal analysis
… made which permits identification of probable source mechanisms for signals emitted during the failure of metals. This was achieved through the construction of a unique instrument and the development of special computer programs. The instrument permitted wideband digital waveform recordings to …
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Modular Approach for Characterizing and Modeling Conducted EMI Emissions in Power Converters
… studies EMI noise emission characterization and modeling in power converters. A modular-terminal-behavioral (MTB) equivalent EMI noise source modeling approach is proposed. This work is the first to systematically develop a 3-terminal EMI noise source model for a switching phase-leg device …
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DESIGN, MODELING AND TESTING OF OPTICAL SURFACES IN ILLUMINATION OPTICS
This dissertation investigates design, modeling and testing methods of optical surfaces in illumination optics.The main focus of this dissertation is to investigate the faceted non-imaging specular light reflector that is often used to generate a uniform, incoherent illuminance distribution. …
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An Operational Value Stream Analysis for Developmental Excellence
… and improved efficiencies in predictive modeling techniques for two separate air vehicle programs: A and B. A Monte Carlo analysis using SEER-H estimation software quantifies the financial and schedule impacts of engineering requirements, revealing a 10–30% cost increase due to volatility …
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A probabilistic graphical model based data compression architecture for Gaussian sources
… encoding. The two aspects of data compression, source modeling, ie. using knowledge about the source, and coding, ie. assigning an output sequence of symbols to each output, are not inherently related, but most existing algorithms mix the two and treat the two as one. This work builds on recent …
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Analysis and modeling of induced seismicity in petroleum reservoirs
… models of wave propagation using simple source representations to a small subset of these microearthquakes, with three goals in mind: 1) to understand whether the microearthquakes are generated by movement along a known fault system in the field, or by some other mechanism; 2) if the …
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On Quantitative Modeling and Simulation of Biological Systems: An Open-Source Approach Using Biological Networks and Rule-Based Transformation to Hybrid Functional Petri Nets
… /> This thesis identifies the requirements for modeling and simulating HFPN and evaluates existing solutions accordingly. As a result, a novel open-source modeling and simulation environment VANESA 2.0, utilizing OpenModelica and PNlib, is presented. It offers reliable simulation results and …
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An investigation of complex deformation patterns detected by using InSAR at Llaima and Tendürek volcanoes
… allow the parameters of possible deformation sources to be estimated through analytical or numerical modeling. This is one way to improve the understanding of subsurface processes acting at volcanoes. Although the monitoring of volcanoes has significantly improved in the last decades (in terms …
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Analysis And Simulation Tools For Solar Array Power Systems
… of the system design phases, including solar source modeling, system simulation, and controller verification. A tool to automate the study of solar array configurations using general purpose circuit simulators has been developed based on the modeling of individual solar cells. Hierarchical …
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Biogeochemical controls on arsenic cycling in a hydrocarbon plume
… into groundwater, contaminating drinking water sources. This dissertation investigates As cycling in an aquifer contaminated by petroleum hydrocarbons near Bemidji, Minnesota, where As is mobilized into groundwater due to biodegradation of hydrocarbons coupled to reduction of ferric oxides. The …
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Statistical Analysis of Wireless Systems Using Markov Models
… Markov models is also discussed. Error source modeling in slow and fast fading conditions is also considered in great detail. Cognitive Radio is an emerging technology in wireless communications that can improve the utilization of radio spectrum by incorporating some intelligence in its …
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Markov Modeling of Third Generation Wireless Channels
… wireless channels in a discrete sense. For modeling these channels, mathematical tools known as hidden Markov models are used. These models have proved themselves to be very efficient in many areas of electrical engineering including speech recognition, pattern recognition, artificial …
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Heat Generation and Transfer in Additive Friction Stir Deposition
… substrate as would be expected by moving heat source modeling. The total heat generated was also quantified as being equal to between 60% and 80% of the mechanical spindle power depending on the tool type and the exact process conditions. That ratio was found to be time-invariant. At the same …
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Comparison of Two Algorithms for Removing Depressions and Delineating Flow Networks From Grid Digital Elevation Models
… frequently as inputs to hydrologic and nonpoint source modeling. The depressions which are frequently present in DEMs may represent the actual topography, but are often the result of errors. Creating a depression-free surface is commonly required prior to deriving flow direction, flow …
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The role of binary stars in searches for extrasolar planets by microlensing and astrometry
… curve solution between binary lens and binary source microlensing events was studied on simulated data, and data observed by the PLANET collaboration. The fitting code BISCO using the PIKAIA genetic algorithm optimizing routine was written for optimizing binary-source microlensing light curves …
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Gravitational waves as direct probes of binary evolution and astrophysical environments
… the foundation for the gravitational waveform source modeling of astrophysical binary systems that interact or are in the presence of astrophysical environments. We then consider the case of supernova explosions in close binaries. Such explosions may be asymmetric such that a kick is imparted …
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