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Reconstructing Sub-Saharan, Mayan And Other Prehistoric Civilizations In A Mathematical Macro-Theory Of Civilizations, Stephen Blaha

Comparative Civilizations Review

No abstract provided.

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Philosophical Identity And The Quest For Planetary Thinking, Norman Swazo

Comparative Civilizations Review

No abstract provided.

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George H. Brimhall's Legacy Of Service To Brigham Young University, Joseph H. Groberg, Mary Jane Woodger

BYU Studies

Franklin S. Harris, president of Brigham Young University from 1921 to 1945, said of his predecessor, George H. Brimhall (fig. 1), "George H. Brimhall, under a tree would make a university any day for where he teaches students will always gather to be taught." Brimhall had two great causes, Harris said: his religion and the cause of education. From his youth to his old age, Brimhall carried these causes forward with unrelenting vigor. In his service as president of Brigham Young University (1904-1921), they merged into one: a university supported by, loyal to, and controlled by The Church of Jesus …

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A Piecewise Linear Approach To Overbooking, Robert Ball, Mark J. Clement, Casey T. Deccio, Feng Huang, Quinn O. Snell

Faculty Publications

Overbooking is frequently used to increase the revenue generated by a network infrastructure without incurring additional costs. If the overbooking factor is chosen appropriately, additional virtual circuits can be admitted without degrading quality of service for existing customers. Most implementations use a single factor to accept a linear fraction of traffic requests. If a piecewise linear approach is used in admissions, additional traffic can be accepted without causing proportional increases in loss rate and utilization. This additional accepted traffic can significantly improve the profit margin for network service providers.

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Aggressive Telecommunications Overbooking Ratios, Robert Ball, Mark J. Clement, Casey T. Deccio, Feng Huang, Quinn O. Snell

Faculty Publications

The Internet is comprised of vast networks of wires and fiber. A common misconception is that there is an unlimited amount of bandwidth; in reality there exists only a finite amount. Each length of wire and fiber is owned by a company, and every company wants to maximize its profit. One means of improving profit is to overbook existing transmission lines in order to increase income without increasing expenses. If too much overbooking is performed, the Quality of Service (QoS) seen by customers will decline. This paper explains a process to achieve an optimal Overbooking Ratio (OR) for admission control …

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Fast Registration Of Tabular Document Images Using The Fourier-Mellin Transform, Luke Alexander Daysh Hutchison

Theses and Dissertations

Image registration, the process of finding the transformation that best maps one image to another, is an important tool in document image processing. Having properly-aligned microfilm images can help in manual and automated content extraction, zoning, and batch compression of images. An image registration algorithm is presented that quickly identifies the global affine transformation (rotation, scale, translation and/or shear) that maps one tabular document image to another, using the Fourier-Mellin Transform. Each component of the affine transform is recovered independantly from the others, dramatically reducing the parameter space of the problem, and improving upon standard Fourier-Mellin Image Registration (FMIR), which …

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Microsecond Spin-Flip Times In N-Gaas Measured By Time-Resolved Polarization Of Photoluminescence, John S. Colton, T. A. Kennedy, A. S. Bracker, D. Gammon

Faculty Publications

We have observed microsecond spin-flip times in lightly doped n-GaAs, by measuring the photoluminescence polarization in the time domain with pump and probe pulses. Times up to 1.4 μs have been measured. Our results as a function of magnetic field indicated three regions governing the spin relaxation: a low field region, where spin-flip times increase due to suppression of the nuclear hyperfine interaction for localized electrons, a medium field region where spin-flip times increase due to narrowing of the hyperfine relaxation for interacting electrons, and a high field region where spin-flip times begin to level off due to the increasing …

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Prioritized Soft Constraint Satisfaction: A Qualitative Method For Dynamic Transport Selection In Heterogeneous Wireless Environments, Heidi R. Duffin, Michael A. Goodrich, Charles D. Knutson

Faculty Publications

This paper presents Prioritized Soft Constraint Satisfaction (PSCS), a novel approach to selecting the “best” transport in dynamic wireless transport switching systems. PSCS maintains a satisfying connection to another endpoint by choosing transports based on a user-established range of preferences and priority for criteria such as speed, power, range and cost. Additionally, feedback is provided regarding tradeoffs among the criteria, thus enabling the user to adjust inputs according to the capabilities of the system. We also recommend guidelines for setting preferences and priorities.

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Dynamic Autonomous Transport Selection In Heterogeneous Wireless Environments, Jeffrey M. Brown, Heidi R. Duffin, Charles D. Knutson, Shannon B. Barnes, Ryan W. Woodings

Faculty Publications

In this paper, we introduce Quality of Transport (QoT), an architecture for synergistically and autonomously managing session-layer protocol access to multiple transports in heterogeneous wireless environments. We present an overview of the QoT architecture including: 1) transport discovery, 2) service discovery, 3) object exchange, 4) transport switching, and 5) intelligent transport selection. Preliminary successes with our design and implementation of QoT suggest that dynamic intelligent autonomous transport switching can help to optimize user experience and session layer performance in multi-transport environments.

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The Effect Of Wearing Mouthguards On Vo2, Ventilation, And Perceived Exertion At Two Different Exercise Intensities, Jeffrey Scott Hurst

Theses and Dissertations

Objective: To assess the effects of wearing a protective mouthguard during exercise on ventilation and oxygen consumption.
Design and Setting: All participants performed a graded maximal exercise test on a cycle ergometer to determine peak oxygen consumption (VO2peak). Each participant also performed 6 submaximal exercise tests while wearing one of two facemasks (nasal or non-nasal breathing) and one of three mouthguard conditions (no mouthguard, boil and bite, custom-fit). Steady-state VO2, rate of perceived exertion (RPE), and other ventilatory values were measured at 60% and 80% of VO2max during each submaximal exercise test. All 6 submaximal exercise tests were completed within …

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Transmission Strategies For Wireless Multi-User, Multiple-Input, Multiple-Output Communication Channels, Quentin H. Spencer

Theses and Dissertations

Multiple-Input, Multiple-Output (MIMO) processing techniques for wireless communication are of interest for next-generation systems because of their potential to dramatically improve capacity in some propagation environments. When used in applications such as wireless LAN and cellular telephony, the MIMO processing methods must be adapted for the situation where a base station is communicating with many users simultaneously. This dissertation focuses on the downlink of such a channel, where the base station and all of the users have antenna arrays. If the transmitter has advance knowledge of the users' channel transfer functions, it can use that information to minimize the interuser …

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Active Minimization Of Acoustic Energy Density In A Mock Tractor Cab, Benjamin Mahonri Faber

Theses and Dissertations

An active noise control (ANC) system has been applied to the problem of attenuating low-frequency tonal noise inside small enclosures. The intended target application of the system was the reduction of the engine firing frequency inside heavy equipment cabins. The ANC system was based on a version of the filtered-x LMS adaptive algorithm, modified for the minimization of acoustic energy density (ED), rather than the more traditional minimization of squared acoustic pressure (SP). Three loudspeakers produced control signals within a mock cabin composed of a steel frame with plywood sides and a Plexiglas® front. An energy density sensor, capable of …

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A Forbidden Subgraph Characterization Problem And A Minimal-Element Subset Of Universal Graph Classes, Michael D. Barrus

Theses and Dissertations

The direct sum of a finite number of graph classes H_1, ..., H_k is defined as the set of all graphs formed by taking the union of graphs from each of the H_i. The join of these graph classes is similarly defined as the set of all graphs formed by taking the join of graphs from each of the H_i. In this paper we show that if each H_i has a forbidden subgraph characterization then the direct sum and join of these H_i also have forbidden subgraph characterizations. We provide various results which in many cases allow us to exactly …

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Using Graphics, Animations, And Data-Driven Animations To Teach The Principles Of Simple Linear Regression To Graduate Students, Daniel Taylor Rowe

Theses and Dissertations

This report describes the design, development, and evaluation of the Simple Linear Regression Lesson (SLRL), a web-based lesson that uses visual strategies to teach graduate students the principles of simple linear regression. The report includes a literature review on the use of graphics, animations, and data-driven animations in statistics pedagogy and instruction in general. The literature review also summarizes the pertinent instructional design and development theories that informed the creation of the lesson. Following the literature review is a description the SLRL and the methodologies used to develop it. The evaluation section of the report details the methods used during …

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Analysis And Design Of Low-Jitter Oscillators, Justin Jennings Fitzpatrick

Theses and Dissertations

This thesis presents an examination of the jitter performance of different oscillator types in the presence of flicker noise, white noise and power supply noise. Key results are achieved using time domain simulations to determine cycle jitter of several different oscillator architectures, semiconductor processes and component features. In the end, a design procedure is developed for creating a low-jitter oscillator in a TSMC .25mm CMOS semiconductor process.

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Problems Related To The Zermelo And Extended Zermelo Model, Benjamin Zachary Webb

Theses and Dissertations

In this thesis we consider a few results related to the Zermelo and Extended Zermelo Model as well as outline some partial results and open problems related thereto. First we will analyze a discrete dynamical system considering under what conditions the convergence of this dynamical system predicts the outcome of the Extended Zermelo Model. In the following chapter we will focus on the Zermelo Model by giving a method for simplifying the derivation of Zermelo ratings for tournaments in terms of specific types of strongly connected components. Following this, the idea of stability of a tournament will be discussed and …

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Autonomous Landing Of A Rotary Unmanned Aerial Vehicle In A Non-Cooperative Environment Using Machine Vision, Joshua Martin Hintze

Theses and Dissertations

Landing an Unmanned Aerial Vehicle (UAV) is a non-trivial problem. Removing the ability to cooperate with the landing site further increases the complexity. This thesis develops a multi-stage process that allows a UAV to locate the safest landing site, and then land without a georeference. Machine vision is the vehicle sensor used to locate potential landing hazards and generate an estimated UAV position. A description of the algorithms, along with validation results, are presented. The thesis shows that software-simulated landing performs adequately, and that future hardware integration looks promising.

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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.

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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.

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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 …

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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.

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Beavers Indirectly Enhance The Growth Of Russian Olive And Tamarisk Along Eastern Montana Rivers, Peter Lesica, Scott Miles

Western North American Naturalist

Russian olive and tamarisk are introduced woody plants invading western North American riparian communities. Beavers can play an important role in structuring these communities by removing the dominant cottonwood trees. Our study explored the way in which beavers interact with cottonwood, Russian olive, and tamarisk along 4 rivers on the Great Plains of eastern Montana. We sampled cottonwood stands that supported populations of 1 or both exotic species, recording beaver damage and density in addition to size and age of cottonwood, Russian olive, and tamarisk. In stands where beaver had been present, they felled an average of 80% of cottonwood …

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Boron Alloying In Gan, Gus L. W. Hart, Laurian Escalanti

Faculty Publications

Using first-principles calculations in the local density approximation, we studied effects of adding up to 6% boron to zinc-blende GaN. We found that the band gap increases monotonically with boron incorporation, in agreement with experiment. A composition-independent band-gap bowing parameter of 4.30 eV was determined, and proved to be large compared to bowing for other mixed cation systems. The formation enthalpy of mixing, ΔH, was determined for BxGa1-xN, BxGa1-xAs, and GaAs1-xNx. A comparison of enthalpies indicates that the production of BxGa1-xN films with boron concentrations of at least 5% may be possible.

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Famous Japanese Individuals To Visit Chicago In The Late 19th And Early 20th Centuries: From Unknown Students To Distinguished Prime Ministers, Eizaburo Okuizumi

Journal of East Asian Libraries

No abstract provided.

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Minutes Of The Meetings Of The North American Coordinating Council On Japanese Library Resources, Journal Of East Asian Libraries

Journal of East Asian Libraries

No abstract provided.

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Laboratory Project In Wireless Fsk Receiver Design, Michael A. Jensen, Cynthia Fuse, Raymond Woodward

Faculty Publications

This paper describes a wireless local area network laboratory project that provides senior and first-year graduate students in microwave engineering courses the opportunity to design, build, and test several passive microstrip components and integrate them into a working system. Students design filters, couplers, amplifiers, diode detectors, quarter-wave transformers, antennas, and stub matching networks in weekly labs that parallel-lectures in a one-semester microwave engineering course. This paper also describes simple inexpensive prototyping and testing methods that have been used in this course. Laboratory materials and technical details of the design are provided on the web for students and educators.

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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 …

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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 …

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Prediction Of Ground Water Vulnerability Using An Integrated Gis-Based Neuro-Fuzzy Techniques

Journal of Spatial Hydrology

There is a need to develop new modeling techniques that assess ground water vulnerability with less expensive data and which are robust when data are uncertain and incomplete. Incorporation of Geographic Information Systems (GIS) with a modeling approach that is robust has the potential for creating a successful modeling tool. The specific objective of this study was to develop a model using Neuro-fuzzy techniques in a GIS to predict ground water vulnerability. The Neuro-fuzzy model was developed in JAVA using four plausible parameters deemed critical in transporting contaminants in and through the soil profile. These parameters include soil hydrologic group, …

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Prediction Of Daily Maximum Streamflow Based On Stochastic Approaches

Journal of Spatial Hydrology

This study analyzed daily maximum streamflow data of each month from three gauge stations on Cekerek Stream for simulation using stochastic approaches. Initially non-parametric test (Mann-Kendall) was used to identify the trend during study period. The two approaches of stochastic modeling, ARIMA and Thomas-Fiering models, were used to simulate monthly maximum data. The error estimates (RMSE and MAE) of predictions from both approaches were compared to identify the most suitable approach for reliable simulation. The two error estimates calculated for two approaches indicate that ARIMA model appear to be slightly better than Thomas-Fiering. However, both approaches were identified as appropriate …

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Full-Text Articles in Entire DC Network

Reconstructing Sub-Saharan, Mayan And Other Prehistoric Civilizations In A Mathematical Macro-Theory Of Civilizations, Stephen Blaha

Comparative Civilizations Review

Philosophical Identity And The Quest For Planetary Thinking, Norman Swazo

Comparative Civilizations Review

George H. Brimhall's Legacy Of Service To Brigham Young University, Joseph H. Groberg, Mary Jane Woodger

BYU Studies

A Piecewise Linear Approach To Overbooking, Robert Ball, Mark J. Clement, Casey T. Deccio, Feng Huang, Quinn O. Snell

Faculty Publications

Aggressive Telecommunications Overbooking Ratios, Robert Ball, Mark J. Clement, Casey T. Deccio, Feng Huang, Quinn O. Snell

Faculty Publications

Fast Registration Of Tabular Document Images Using The Fourier-Mellin Transform, Luke Alexander Daysh Hutchison

Theses and Dissertations

Microsecond Spin-Flip Times In N-Gaas Measured By Time-Resolved Polarization Of Photoluminescence, John S. Colton, T. A. Kennedy, A. S. Bracker, D. Gammon

Faculty Publications

Prioritized Soft Constraint Satisfaction: A Qualitative Method For Dynamic Transport Selection In Heterogeneous Wireless Environments, Heidi R. Duffin, Michael A. Goodrich, Charles D. Knutson

Faculty Publications

Dynamic Autonomous Transport Selection In Heterogeneous Wireless Environments, Jeffrey M. Brown, Heidi R. Duffin, Charles D. Knutson, Shannon B. Barnes, Ryan W. Woodings

Faculty Publications

The Effect Of Wearing Mouthguards On Vo2, Ventilation, And Perceived Exertion At Two Different Exercise Intensities, Jeffrey Scott Hurst

Theses and Dissertations

Transmission Strategies For Wireless Multi-User, Multiple-Input, Multiple-Output Communication Channels, Quentin H. Spencer

Theses and Dissertations

Active Minimization Of Acoustic Energy Density In A Mock Tractor Cab, Benjamin Mahonri Faber

Theses and Dissertations

A Forbidden Subgraph Characterization Problem And A Minimal-Element Subset Of Universal Graph Classes, Michael D. Barrus

Theses and Dissertations

Using Graphics, Animations, And Data-Driven Animations To Teach The Principles Of Simple Linear Regression To Graduate Students, Daniel Taylor Rowe

Theses and Dissertations

Analysis And Design Of Low-Jitter Oscillators, Justin Jennings Fitzpatrick

Theses and Dissertations

Problems Related To The Zermelo And Extended Zermelo Model, Benjamin Zachary Webb

Theses and Dissertations

Autonomous Landing Of A Rotary Unmanned Aerial Vehicle In A Non-Cooperative Environment Using Machine Vision, Joshua Martin Hintze

Theses and Dissertations

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

Theses and Dissertations

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

Theses and Dissertations

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

Theses and Dissertations

Lattices And Their Applications To Rational Elliptic Surfaces, Gretchen Rimmasch

Theses and Dissertations

Beavers Indirectly Enhance The Growth Of Russian Olive And Tamarisk Along Eastern Montana Rivers, Peter Lesica, Scott Miles

Western North American Naturalist

Boron Alloying In Gan, Gus L. W. Hart, Laurian Escalanti

Faculty Publications

Famous Japanese Individuals To Visit Chicago In The Late 19th And Early 20th Centuries: From Unknown Students To Distinguished Prime Ministers, Eizaburo Okuizumi

Journal of East Asian Libraries

Minutes Of The Meetings Of The North American Coordinating Council On Japanese Library Resources, Journal Of East Asian Libraries

Journal of East Asian Libraries

Laboratory Project In Wireless Fsk Receiver Design, Michael A. Jensen, Cynthia Fuse, Raymond Woodward

Faculty Publications

Studies In Multiple-Antenna Wireless Communications, Christian Bruce Peel

Theses and Dissertations

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

Theses and Dissertations

Prediction Of Ground Water Vulnerability Using An Integrated Gis-Based Neuro-Fuzzy Techniques

Journal of Spatial Hydrology

Prediction Of Daily Maximum Streamflow Based On Stochastic Approaches

Journal of Spatial Hydrology