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- Age dependency ratio; Demographic characteristics; Economic development; Female labor force participation; Lagged fertility; Newey west standard errors; Unemployment (1)
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Terahertz Radiation From High-Temperature Superconducting Bscco Mesas Of Various Geometries, Daniel P. Cerkoney
Terahertz Radiation From High-Temperature Superconducting Bscco Mesas Of Various Geometries, Daniel P. Cerkoney
HIM 1990-2015
The purpose of this thesis is to examine the radiation from high-temperature superconducting mesas of Bi2Sr2CaCu2O8+ (BSCCO). This is motivated by the need for coherent sources of continuous wave terahertz (THz) emission capable of radiating practically in the THz frequency band. As BSCCO has been shown to be tunable from 0.5–2.4 THz (i.e., through the entire socalled terahertz gap centered about 1 THz), and has a higher peak operating temperature near 1 THz than most alternative sources, it is a good candidate for imaging and spectroscopy device applications [1]. When a static DC voltage is applied to a BSCCO mesa, …
To Hydrate Or Chlorinate: A Regression Analysis Of The Levels Of Chlorine In The Public Water Supply, Drew A. Doyle
To Hydrate Or Chlorinate: A Regression Analysis Of The Levels Of Chlorine In The Public Water Supply, Drew A. Doyle
HIM 1990-2015
Public water supplies contain disease-causing microorganisms in the water or distribution ducts. In order to kill off these pathogens, a disinfectant, such as chlorine, is added to the water. Chlorine is the most widely used disinfectant in all U.S. water treatment facilities. Chlorine is known to be one of the most powerful disinfectants to restrict harmful pathogens from reaching the consumer. In the interest of obtaining a better understanding of what variables affect the levels of chlorine in the water, this thesis will analyze a particular set of water samples randomly collected from locations in Orange County, Florida. Thirty water …
Angular Dependence Of The Emission From The Intrinsic Josephson Junction In Pie-Shaped Wedge Triangular Bscco Mesas, Manuel Morales
Angular Dependence Of The Emission From The Intrinsic Josephson Junction In Pie-Shaped Wedge Triangular Bscco Mesas, Manuel Morales
HIM 1990-2015
The purpose of this thesis is to determine the radiation patterns from an acute isosceles triangular superconducting mesa modeled by a pie-shaped geometry. The terahertz band lies between the microwave and infrared regions of the electromagnetic spectrum. The terahertz radiation from atomic-scale layered superconducting mesas is caused by the tunneling of electron pairs in the ac-Josephson effect. To determine the terahertz power radiated per unit solid angle of an acute isosceles triangular superconducting mesa, a model was employed in which the shape of the mesa is approximated as a pie-shaped wedge. This model is shown to have an accuracy of …
Sparsification Of Social Networks Using Random Walks, Bryan Wilder
Sparsification Of Social Networks Using Random Walks, Bryan Wilder
HIM 1990-2015
Analysis of large network datasets has become increasingly important. Algorithms have been designed to find many kinds of structure, with numerous applications across the social and biological sciences. However, a tradeoff is always present between accuracy and scalability; otherwise promising techniques can be computationally infeasible when applied to networks with huge numbers of nodes and edges. One way of extending the reach of network analysis is to sparsify the graph by retaining only a subset of its edges. The reduced network could prove much more tractable. For this thesis, I propose a new sparsification algorithm that preserves the properties of …
A Price-Volume Model For A Single-Period Stock Market, Yun Chen-Shue
A Price-Volume Model For A Single-Period Stock Market, Yun Chen-Shue
HIM 1990-2015
The intention of this thesis is to provide a primitive mathematical model for a financial market in which tradings affect the asset prices. Currently, the idea of a price-volume relationship is typically used in the form of empirical models for specific cases. Among the theoretical models that have been used in stock markets, few included the volume parameter. The thesis provides a general theoretical model with the volume parameter for the intention of a broader use. The core of the model is the correlation between trading volume and stock price, indicating that volume should be a function of the stock …
Prototype Of An Educational Video Game For Knowledge Retention In Youth Health Education, Jennifer Vogel
Prototype Of An Educational Video Game For Knowledge Retention In Youth Health Education, Jennifer Vogel
HIM 1990-2015
There is some debate about the most effective and least controversial means of sex education in schools. In several states, state law does not require education about Sexually Transmitted Diseases and Human Immunodeficiency Virus Infection/Acquired Immunodeficiency Syndrome (STDs and HIV/AIDS.) There is also debate about the effect and pervasiveness of sexual situations in video games and its effect on the healthy sexual development of adolescents. This research therefore aims to try to solve these two problems and answer the following question: Is it possible to represent sex in a more realistic and educational way through a video game while teaching …
Gpu Accelerated Approach To Numerical Linear Algebra And Matrix Analysis With Cfd Applications, Adam Phillips
Gpu Accelerated Approach To Numerical Linear Algebra And Matrix Analysis With Cfd Applications, Adam Phillips
HIM 1990-2015
A GPU accelerated approach to numerical linear algebra and matrix analysis with CFD applications is presented. The works objectives are to (1) develop stable and efficient algorithms utilizing multiple NVIDIA GPUs with CUDA to accelerate common matrix computations, (2) optimize these algorithms through CPU/GPU memory allocation, GPU kernel development, CPU/GPU communication, data transfer and bandwidth control to (3) develop parallel CFD applications for Navier Stokes and Lattice Boltzmann analysis methods. Special consideration will be given to performing the linear algebra algorithms under certain matrix types (banded, dense, diagonal, sparse, symmetric and triangular). Benchmarks are performed for all analyses with baseline …
Periodic Nonlinear Refractive Index Of Carbon Disulfide Vapors, Evelyn Strunk
Periodic Nonlinear Refractive Index Of Carbon Disulfide Vapors, Evelyn Strunk
HIM 1990-2015
The purpose of this thesis is to explore the nonlinear refractive index of carbon disulfide vapors as opposed to its liquid form. With CS[sub2] vapors, the vapors are less dense so they will rotate longer than liquid CS[sub2] because there are less intermolecular interactions. The electric field of the beam causes the molecules to align with the electric field and applies a torque to the molecules. After this excitation, the molecules continue rotating. The rotations change the index of refraction of the material. Continuous rotation of the molecules causes the index of refraction to be periodic which means the molecules …
Coarse Grained Monte Carlo Simulation Of The Self-Assembly Of The Hiv-1 Capsid Protein, Jeffrey Weber
Coarse Grained Monte Carlo Simulation Of The Self-Assembly Of The Hiv-1 Capsid Protein, Jeffrey Weber
HIM 1990-2015
In this study, a Monte Carlo simulation was designed to observe the self-assembly of the HIV-1 capsid protein. The simulation allowed a coarse grained model of the capsid protein with defined interaction sites to move freely in three dimensions using the Metropolis criterion. Observations were made as to which parameters affected the assembly the process. The ways in which the assembly were affected were also noted. It was found that proper dimerization of the capsid protein was necessary in order for the lattice to form properly. It was also found that a strong trimeric interface could be responsible for double-layered …
Pressure And Temperature Response Of A Stimuli-Responsive Polymer Probed With Raman Microscopy, Coleman Cariker
Pressure And Temperature Response Of A Stimuli-Responsive Polymer Probed With Raman Microscopy, Coleman Cariker
HIM 1990-2015
Poly(N-isopropylacrylamide) (PNIPAM) is a thermo-responsive hydrogel; that is, it is a macromolecule which exists in a hydrated state beneath its lower critical solution temperature (LCST). Polymers such as PNIPAM undergo a phase transition in response to changes in temperature, pressure, pH, salt concentration, and the addition of co-solvents. Previously, visible-light microscopic measurements of the pressure-induced phase transition have been hindered by the lack of a pressurization apparatus with the short working distance and optical transmission properties necessary for high resolution microscopy. We employ a high pressure setup which uses a fused silica micro-capillary to contain the sample. Our experiment reveals …
Micro-Raman Spectroscopy Of Carbonaceous Chondrite Meteorites, Asmail Habach
Micro-Raman Spectroscopy Of Carbonaceous Chondrite Meteorites, Asmail Habach
HIM 1990-2015
Analyzing the constituents of meteorites has played an important role in forming the contemporary theories of solar system evolution, planets formation, and stellar evolution. Meteorites are often a complex mixture of common rock forming silicates, such as olivines and pyroxenes, with a range of exotic species including hydrated silicates, and in some cases organic compounds. We used Micro-Raman spectroscopy to analyze the compositions of three carbonaceous chondrites: NWA852, Murchison and Allende. Raman spectra were measured using laser sources with different excitation wavelengths: HeNe 633 nm and Nd:YAG 532 nm. We were able to detect 9 minerals in NWA852, 3 minerals …
Computation Of Boolean Formulas Using Sneak Paths In Crossbar Computing, Alvaro Velasquez
Computation Of Boolean Formulas Using Sneak Paths In Crossbar Computing, Alvaro Velasquez
HIM 1990-2015
Memristor-based nano-crossbar computing is a revolutionary computing paradigm that does away with the traditional Von Neumann architectural separation of memory and computation units. The computation of Boolean formulas using memristor circuits has been a subject of several recent investigations. Crossbar computing, in general, has also been a topic of active interest, but sneak paths have posed a hurdle in the design of pervasive general-purpose crossbar computing paradigms. In this paper, we demonstrate that sneak paths in nano-crossbar computing can be exploited to design a Boolean-formula evaluation strategy. We demonstrate our approach on a simple Boolean formula and a 1-bit addition …
Theoretical Tailoring Of Perforated Thin Silver Films For Surface Plasmon Resonance Affinity, Renan Gongora
Theoretical Tailoring Of Perforated Thin Silver Films For Surface Plasmon Resonance Affinity, Renan Gongora
HIM 1990-2015
Metallic films, in conjunction with biochemical-targeted probes, are expected to provide early diagnosis, targeted therapy and non-invasive monitoring for epidemiology applications [1-4]. The resonance wavelength peaks, both plasmonic and Wood-Rayleigh Anomalies (WRAs), in the scattering spectra are affected by the metallic architecture. As of today, much research has been devoted to extinction efficiency in the plasmonic region. However, Wood Rayleigh Anomalies (WRAs) typically occur at wavelengths associated with the periodic distance of the structures. A significant number of papers have already focused on the plasmonic region of the visible spectrum, but a less explored area of research was presented here; …
On Well-Quasi-Orderings, Forrest Thurman
On Well-Quasi-Orderings, Forrest Thurman
HIM 1990-2015
A quasi-order is a relation on a set which is both reflexive and transitive, while a well-quasi-order has the additional property that there exist no infinite strictly descending chains nor infinite antichains. Well-quasi-orderings have many interesting applications to a variety of areas which includes the strength of certain logical systems, the termination of algorithms, and the classification of sets of graphs in terms of excluded minors. My thesis explores how well-quasi-orderings are related to these topics through examples of four known well-quasi-orderings which are given by Dickson's Lemma, Higmans's Lemma, Kruskal's Tree Theorem, and the Robertson-Seymour Theorem. The well-quasi-ordering conjecture …
Squaraine Dyes For Two-Photon Fluorescence Bioimaging Applications, Maria Colon Gomez
Squaraine Dyes For Two-Photon Fluorescence Bioimaging Applications, Maria Colon Gomez
HIM 1990-2015
No abstract provided.
Modification To Einstein's Field Equations Imposed By String Theory And Consequences For The Classical Tests Of General Relativity, Christopher Frye
Modification To Einstein's Field Equations Imposed By String Theory And Consequences For The Classical Tests Of General Relativity, Christopher Frye
HIM 1990-2015
String theory imposes slight modifications to Einstein's equations of general relativity (GR). In (4), the authors claim that the gravitational field equations in empty space, which in GR are just R [subscript greek letters mu nu ] = 0, should hold one extra term which is first order in the string constant [alpha'] and proportional to the Riemann curvature tensor squared. They do admit, however, that this simple modification is just schematic. In (1) the authors use modified equations which are coupled to the dilation field. We show that equations given in (4) do not admit an isotropic solution; justification …
Gold Nanoparticle Generation Using In Situ Reduction On A Photoresist Polymer Substrate, Christopher J. Clukay
Gold Nanoparticle Generation Using In Situ Reduction On A Photoresist Polymer Substrate, Christopher J. Clukay
HIM 1990-2015
This report presents evidence that in-situ reduction of metal ions bound to a cross-linked polymer surface does not always result in nanoparticle formation solely at the interface, as is commonly assumed, but also as much as 40 nm deep within the polymer matrix. Tetrachloroaurate ions were bound using a variety of multi-functional amines to cured films of SU-8 -- a cross-linkable epoxide frequently used for micro- and nanofabrication -- and then treated using one of several reducing agents. The resulting gold-nanoparticle decorated films were examined by X-ray photoelectron spectroscopy and by plan-view and cross-sectional transmission electron microscopy. Reduction using sodium …
Approximation By Bernstein Polynomials At The Point Of Discontinuity, Jie Ling Liang
Approximation By Bernstein Polynomials At The Point Of Discontinuity, Jie Ling Liang
HIM 1990-2015
Chlodovsky showed that if x0 is a point of discontinuity of the first kind of the function f, then the Bernstein polynomials Bn(f, x0) converge to the average of the one-sided limits on the right and on the left of the function f at the point x0. In 2009, Telyakovskii in (5) extended the asymptotic formulas for the deviations of the Bernstein polynomials from the differentiable functions at the first-kind discontinuity points of the highest derivatives of even order and demonstrated the same result fails for the odd order case. Then in 2010, Tonkov in (6) found the right formulation …
Small-Scale Hybrid Alternative Energy Maximizer For Wind Turbines And Photovoltaic Panels, Ross Kerley
Small-Scale Hybrid Alternative Energy Maximizer For Wind Turbines And Photovoltaic Panels, Ross Kerley
HIM 1990-2015
This thesis describes the creation of a small-scale Hybrid Power System (HPS) that maximizes energy from a wind turbine and photovoltaic array. Small-scale HPS are becoming an increasingly viable energy solution as fossil fuel prices rise and more electricity is needed in remote areas. Modern HPS typically employ wind speed sensors and three power stages to extract maximum power. Modern systems also use passive rectifiers to convert AC from the wind turbine to DC that is usable by power electronics. This passive system inefficiently wastes power and introduces damaging harmonic noise to the wind turbine. The HPS described in this …
An Analysis Of The Relationship Between Economic Development And Demographic Characteristics In The United States, Chad M. Heyne
An Analysis Of The Relationship Between Economic Development And Demographic Characteristics In The United States, Chad M. Heyne
HIM 1990-2015
Over the past several decades there has been extensive research done in an attempt to determine what demographic characteristics affect economic growth, measured in GDP per capita. Understanding what influences the growth of a country will vastly help policy makers enact policies to lead the country in a positive direction. This research focuses on isolating a new variable, women in the work force. As well as isolating a new variable, this research will modify a preexisting variable that was shown to be significant in order to make the variable more robust and sensitive to recessions. The intent of this thesis …
High Yield Assembly And Electron Transport Investigation Of Semiconducting-Rich Local-Gated Carbon Nanotube Field Effect Transistors, Kristy Kormondy
High Yield Assembly And Electron Transport Investigation Of Semiconducting-Rich Local-Gated Carbon Nanotube Field Effect Transistors, Kristy Kormondy
HIM 1990-2015
Single-walled carbon nanotubes (SWNTs) are ideal for use in nanoelectronic devices because of their high current density, mobility and subthreshold swing. However, assembly methods must be developed to reproducibly align all-semiconducting SWNTs at specific locations with individually addressable gates for future integrated circuits. We show high yield assembly of local-gated semiconducting SWNTs assembled via AC-dielectrophoresis (DEP). Using individual local gates and scaling the gate oxide shows faster switching behavior and lower power consumption. The devices were assembled by DEP between prefabricated Pd source and drain electrodes with a thin Al/Al2O3 gate in the middle, and the electrical characteristics were measured …
Size-Effect Of Pd Nanoparticles Supported On Zro2 In The Catalytic Reduction Of No By H2, Young Woo Joh
Size-Effect Of Pd Nanoparticles Supported On Zro2 In The Catalytic Reduction Of No By H2, Young Woo Joh
HIM 1990-2015
Size-selected Pd nanoparticles were synthesized by the reverse-micelle encapsulation method and deposited on a ZrO2 support for the catalytic NO reduction by H2. All of our samples were found to be highly selective, but a significant size effect was not seen for Pd nanoparticles of between 1.2 nm and 5.5 nm. Ultra-small Pd clusters of less than 1 nm were found to be much less active, and are assumed to be affected by an encapsulation effect of the support. Catalyst activity was comparable to that of literature, and is applicable to H2-SCR research.
Estimation And The Stress-Strength Model, Naomi Brownstein
Estimation And The Stress-Strength Model, Naomi Brownstein
HIM 1990-2015
The paper considers statistical inference for R = P(X < Y) in the case when both X and Y have generalized gamma distributions. The maximum likelihood estimators for R are developed in the case when either all three parameters of the generalized gamma distributions are unknown or when the shape parameters are known. In addition, objective Bayes estimators based on non informative priors are constructed when the shape parameters are known. Finally, the uniform minimum variance unbiased estimators (UMVUE) are derived in the case when only the scale parameters are unknown.
Directory-Based Cache Coherence In Smtp Machines Without Memory Overhead Using Sparse Directories, Anton Kiriwas
Directory-Based Cache Coherence In Smtp Machines Without Memory Overhead Using Sparse Directories, Anton Kiriwas
HIM 1990-2015
As computing power has increased over the past few decades, science and engineering have found more and more uses for this new found computing power. With the advent of multiprocessor machines, we are achieving MIPS and FLOPS ratings previously unthought-of. Distributed shared-memory machines (DSM) are quickly becoming a powerful tool for computing, and the ability to build them from commodity off-the-shelf parts would be a great benefit to computing in general. In the paper entitled, "SMTp: An Architecture for Next-generation Scalable Multi-threading", Heinrich, et al. presents an architecture for a scalable DSM built from slightly modified machines capable of simultaneous …