Digital Commons Network^™

Design Of A High Speed Mixed Signal Cmos Mutliplying Circuit, David Ray Bartholomew

Theses and Dissertations

This thesis presents the design of a mixed-signal CMOS multiplier implemented with short-channel PMOS transistors. The multiplier presented here forms the product of a differential input voltage and a five-bit digital code. A TSMC 0.18 µm MOSFET model is used to simulate the circuit in Cadence Design Systems. The research presented in this thesis reveals a configuration that allows the multiplier to run at a speed of 8.2 GHz with end-point nonlinearity less than 5%. The high speed and low nonlinearity make this circuit ideal for applications such as filtering and digital to analog conversion.

Implementation Issues Of Real-Time Trajectory Generation On Small Uavs, Derek B. Kingston

Theses and Dissertations

The transition from a mathematical algorithm to a physical hardware implementation is non-trivial. This thesis discusses the issues involved in the transition from the theory of real-time trajectory generation all the way through a hardware experiment. Documentation of the validation process as well as modifications to the existing theory as a result of hardware testing are treated at length. The results of hardware experimentation show that trajectory generation can be done in real-time in a manner facilitating coordination of multiple small UAVs.

Influence Of Consolidation And Interweaving On Compression Behavior Of Isotruss™ Structures, Steven Matthew Hansen

Theses and Dissertations

Composite IsoTruss™ structures incorporate intersecting longitudinal and helical members. At the intersections, the fiber tows can be interwoven to achieve mechanical interlocking for increased joint integrity. Interlocking introduces gaps and curvilinear fiber paths similar to the crossovers in filament-wound structures, potentially facilitating local delamination within the members, thus reducing the strength and/or damage tolerance of the structure. Optimizing the interlocking pattern at the joints along with efficient consolidation minimizes these effects.

Joint specimens were fabricated using a specially designed machine. Specific tow intersection patterns at the joint were: 1) Completely encapsulating the longitudinal member with the tows of the helical …

Percolation Paths Of Three-Dimensions In Sensitized Stainless Steel, Alisa Jean Henrie

Theses and Dissertations

The study of three-dimensional percolation paths through materials is important in its contribution to understanding defect sensitive properties of materials. This work shows the importance of grain boundary character in modeling defect sensitive boundaries. Also presented are trends of percolation of sensitized grain boundaries in 304 stainless steel (304SS). Of particular interest is how open paths form in a three-dimensional model created through serial sectioning. Evidence is presented that triple or quadruple points that contain typically two boundaries with special character that intersect the percolation path break up the path. Some grains with no known special qualities (i.e., CSL) have …

Lattices And Their Applications To Rational Elliptic Surfaces, Gretchen Rimmasch

Theses and Dissertations

This thesis discusses some of the invariants of rational elliptic surfaces, namely the Mordell-Weil Group, Mordell-Weil Lattice, and another lattice which will be called the Shioda Lattice. It will begin with a brief overview of rational elliptic surfaces, followed by a discussion of lattices, root systems and Dynkin diagrams. Known results of several authors will then be applied to determine the groups and lattices associated with a given rational elliptic surface, along with a discussion of the uses of these groups and lattices in classifying surfaces.

Beamforming Techniques And Interference Mitigation Using A Multiple Feed Array For Radio Astronomy, Chad K. Hansen

Theses and Dissertations

Radio frequency interference has become a large problem to radio astronomers. This thesis proposes the idea that radio frequency interference can be mitigated using a phased array feed in conjunction with a large reflector. A phased array feed would allow radio astronomers to observe fainter signals than is currently possible, while at the same time enabling rapid sky surveys. A phased array feed was designed and simulated, and sensitivity optimization was performed on the array feed. It was shown that higher sensitivity can be achieved using a 7-element phased array feed than with a conventional waveguide feed. Simulations were ran …

Using Weblogs In Scholarship And Teaching, David Wiley, Trey Martindale

Faculty Publications

The web has become an important resource for teaching and learning (National Center for Educational Statistics [NCES], 2003). One reason the web is such a vital resource is that it allows almost anyone to contribute to its "holdings." Tools like HTML editors and FTP clients have made web publishing available to many teachers and students. However, the challenge of learning to use these tools has been a barrier to web publishing for many. Weblogs reduce the technical barriers to effective web publishing significantly.

Effects Of Friction Stir Welding On Polymer Microstructure, Seth R. Strand

Theses and Dissertations

This work establishes the relationships between several key Friction Stir Welding process parameters and the resulting microstructural and flexural properties of the welded joint. A series of four single parameter experiments were run. The parameters investigated were pin diameter, feedrate, shoe temperature, and pressure time. Butt welds were made in 6 mm thick stress-relieved extruded polypropylene sheet. Three-point bend tests were used to determine the ultimate flexural strength and coincident strain. The maximum bend angle before failure was used to label the welds as "good or bad." An optical microscope capable of cross polarization was used to examine and photograph …

The British North Sea: The Importance Of And Factors Affecting Tax Revenue From Oil Production, Mark Hill

Theses and Dissertations

The oil industry is the richest and most influential industry in the world. The industry has moved the fates of nations. Oil is required to fight wars and exert power, and the restriction of this energy source is paramount to the restriction of movement, control, and in the end, power. Management of this resource and the tax revenue it generates are of serious strategic importance, both domestically and internationally. Understanding the results of taxation for this important commodity is important to international relations as well. The tax system affects tax revenue, government actions, oil company actions, and the oil supply …

Integrated Microbattery Charger For Autonomous Systems, Brian W. Lefevre

Theses and Dissertations

This thesis presents a microbattery recharging circuit suitable for autonomous microsystems. The battery charger chosen for this design is a constant current battery charger. Two methods of regulating the constant-current are discussed. A published shunt regulator design is analyzed and is presented with enhancements to the design. A series regulator that controls the current to the battery with a switch is designed and fabricated in a 1.5µm CMOS process. The fabricated prototype occupies less than 2.20x2.20mm and is expected to dissipate less than 25µW of power. A discrete model of the integrated circuit is constructed and tested to demonstrate that …

Ann Tizia Leitich: New Voice, New Woman: Packaging America For Vienna, Brooke Marie Wright

Undergraduate Honors Theses

This thesis examines the contribution which the 1920s works of Viennese journalist and novelist Ann Tizia Leitich made on the Austrian consideration of the new woman during the interwar period. Following World War I, European society was both infatuated and repulsed by American culture, and especially by American women. While many European women began to look to the United States as the model of the “new woman,” others harshly criticized the changes which American influence and the image of the American woman had brought to Europe. As an Austrian living in the United States and writing newspaper articles and other …

Studies In Multiple-Antenna Wireless Communications, Christian Bruce Peel

Theses and Dissertations

Wireless communications systems are used today in a variety of milieux, with a recurring theme: users and applications regularly require higher throughput. Multiple antennas enable higher throughput and/or more robust performance than single-antenna communications, with no increase in power or frequency bandwidth. Systems are required which achieve the full potential of this "space-time" communication channel under the significant challenges of time-varying fading, multiple users, and the choice of appropriate coding schemes. This dissertation is focused on solutions to these problems. For the single-user case, there are many well-known coding techniques available; in the first part of this dissertation, the performance …

Derivation Of Moving-Coil Loudspeaker Parameters Using Plane Wave Tube Techniques, Brian Eric Anderson

Theses and Dissertations

Small-signal moving-coil loudspeaker driver parameters are traditionally derived through electrical impedance measurement techniques. These parameters are commonly called Thiele/Small parameters, after Neville Thiele and Richard Small who are credited with developing industry-standard loudspeaker modeling techniques. However, because loudspeaker drivers are electro-mechano-acoustical transducers, it should be possible to measure their parameters in physical domains other than the electrical domain. A method of measuring loudspeaker parameters from the acoustical domain will be developed. The technique uses a plane wave tube to measure acoustical properties of a baffled driver under test. Quantities such as the transmission loss through the driver are measured for …

Androgen Receptor Expression In The Rat Prostate Is Down-Regulated By Dietary Phytoestrogens, Edwin D. Lephart, Trent D. Lund, Daniel J. Munson, Herman Aldercreutz, Robert J. Handa

Faculty Publications

Background- It is well established that the growth of the prostate gland is a hormone-dependent phenomenon involving both androgenic and estrogenic control. Proliferation of prostate cells is, at least in part, under control of estrogen receptor beta (ER-beta). Phytoestrogens bind ER-beta with high affinity and therefore may have antiproliferative effects in the prostate. Methods- The prostates of male Long-Evans rats fed a diet high in phytoestrogens (Phyto-600) or very low levels of phytoestrogens (Phyto-free) were analyzed to determine the impact of dietary phytoestrogens on prostate weight and androgen receptor (AR) expression in the prostate. Results- Dietary phytoestrogens significantly decreased post-pubertal …

Priced To Sell, William J. Hamblin

Review of Books on the Book of Mormon 1989–2011

Review of Robert M. Price. “Prophecy and Palimpsest.” Dialogue 35/3.

The Signature Books Saga, Louis Midgley

Review of Books on the Book of Mormon 1989–2011

No abstract provided.

Doing Violence To Journalistic Integrity, Craig L. Foster

Review of Books on the Book of Mormon 1989–2011

Review of Jon Krakauer. Under the Banner of Heaven: A Story of a Violent Faith.

Application Of Chemical Mass Balance To Water Quality Data Of Malaprabha River

Journal of Spatial Hydrology

Mass balance calculations carried out for Na, K, Ca, Mg, Cl, SO₄ and HCO₃ for the study area showed that the major source of contamination is through non-point sources. It is also observed that the river water quality during the non-monsoon season (February, 2000) almost resembles with the groundwater quality of the adjoining aquifer. However, during post-monsoon period (October, 1999) a wide variation was found between groundwater and surface water quality which can be attributed to the movement of fertilizers and agricultural ashes with monsoon flows reaching the stream along with overland flow. The major source of contamination …

Wedding Vows And Coffins: Canticles' Rhetoric, The Liturgical Form Of Matrimony And Middleton's A Chaste Maid In Cheapside (1613), Lisa Beauchamp

Quidditas

The concluding scene of Thomas Middleton’s A Chaste Maid in Cheapside begins as a double funeral procession and turns into a wedding as the lovers rise from their coffins to be married; but what are coffins doing in a wedding scene? The coffins, as an onstage sign of the metamorphosis of funeral into wedding, are the emblematic focus for this paper. This investigation exposes the resonances of Canticles’ erotic betrothal and Revelation’s matrimonial fulfilment as a rhetoric common to both theatrical rituals and to ecclesiastical scriptures. After briefly introducing what I call Canticles’ rhetoric – Canticles itself, its exegesis, and …

Determination Of Four Production Indicators In Llama (Lama Glama) Herds In Ayllu Pumasara, Saucari, Oruro, Magin Herrera Lopez

Theses and Dissertations

Camelid exploitation, despite its economic antiquity in our nation, recently has awakened greater interest in investigators. Currently, there are more than 2,500,000 llamas in the Altiplano, which is the highest number of camelids on the world. Production is organic, with the llama capital of Bolivia being the department of Oruro. This work's objective is to determine four production parameters: composition and structure of llama herds, percentage of births, cria [calf] mortality, and crias that reach 5 months old, in 3 communities of Ayllu Pumasa of Saucar’ province, department of Oruro. The llama-raising system is traditional and herds contain more than …

Imagine Lunch, Susan Grandfield

The Utah English Journal

The high school where I teach houses many vending machines. A vending machine resides in every comer of the school known to me, and I think there are some machines in areas that I don't frequent. It's a big school, after all. Kids can buy candy, hot and spicy chips that tum their tongues red, Pop-Tarts, Pepsi (not Coke, though) and a variety of other so-called foods, none of which have nutritional value. Kids without much money have discovered a machine with a large pastry called a "Big Texas" (as in "I got me my Big Texas") for 65 cents. …

Effect Of Canihua (Chenopodium Pallidicaule Aellen), Wheat (Triticum Aestivum L.), And Soybean (Glycine Max M) Sprouts On The Feeding Of Guinea Pigs For Growth, Eddy Wilfredo Calle Ayma

Theses and Dissertations

This study occurred during July, August, and September in the Small Animals Investigation and Production Center (CIPAM), dependent of the Faculty of Agricultural, Livestock, and Veterinary Sciences of the Technical University of Oruro, of the Central Highland of Bolivia. In order to satisfy guinea pig nutrition requirements, which are 2800.00 kcal/kg of energy, 18.00% protein, 10.00% fiber, 1.00% calcium, and 0.60% phosphorus, the following ingredients were used in feed: 11.30% yellow corn, 30.00% milled wheat [Bromus catharticus], 14.00% soy cake, 32.00% wheat bran, 9.00% alfalfa flour, 1.80% bone flour, 1.00% conchilla, 0.50% common salt, and 0.40% methionine. The effect that …

Determination Of The Nutritional Level Of Calcium And Phosphorus In Llamas (Lama Glama) In Two Seasons In The Condoriri Agricultural Experiment Center, Gustavo Adolfo León Titichoca

Theses and Dissertations

The concentrations of calcium and phosphorus were determined in 12 llamas from the Condoriri Agricultural Experiment Center (Oruro Technical University) of Oruro, Bolivia during two seasons (wet and dry) and at three ages (newborn, juvenile, and adult). Samples of flesh were taken from the arm, leg, back, rib, and neck. Pasture samples (grassland and prairie) were used to determine the rate of biting of each animal studied. The blood samples were taken by extracting blood from a jugular vein. The minerals (Ca and P) in the flesh are highest in the wet season, 113.78 mg/100 g. The newborns were found …

Utah's Plight: A Passage Through The Great Depression, Joseph F. Darowski

Theses and Dissertations

The Great Depression marked a fateful passage in the annals of the American people. President Roosevelt's New Deal, the nation's signature response, proved to be a determined but erratic reaction. Against the backdrop of a nation deeply mired in an unrelenting international depression, dramatic events played themselves out in the lives of the men and women of Utah. Throughout, fidelity to principles of independence, self-reliance, and self-sufficiency were sorely challenged.

The people of Utah found succor in two almost diametrically opposed responses. The New Deal offered an amalgam of programs and panaceas through which the federal government attempted to deliver …

Click, Jayne Marek

The Utah English Journal

"It didn't feel like anything special," Perry said. A fine winter night outside, meaning the frost had sharpened the stars. It was colder in Urbana than it had been in Madison when Sis had left that morning. "But all of a sudden I was flat on the library floor. Face hurt like hell."

"Yeah, well, no surprise, with that face," Sis said.

"Shut up."

"So are seizures hereditary?" Sis asked.

"Nah, it's stress. Studying your ass off. As if you would know."

Lord Hamlet's Lesson, Harlan Underhill

The Utah English Journal

No abstract provided.

It's Not So Elementary, Stacy Miller

The Utah English Journal

No abstract provided.

A Tribute To A Fallen Hero, Stacy Miller

The Utah English Journal

No abstract provided.

Odysseus, Harlan Underhill

The Utah English Journal

No abstract provided.

The Utah English Journal, Volume 32, 2004: Full Issue

The Utah English Journal

No abstract provided.