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Binding With Heraldic Plants, Kerry M. Muhlestein Sep 2004

Binding With Heraldic Plants, Kerry M. Muhlestein

Faculty Publications

Binding prisoners is a pictorial icon which spans the entire length of ancient Egyptian history; therefore various aspects of this image have received scholarly treatment from time to time. One sub-motif which has received little attention is the image of binding prisoners, seemingly exclusively foreign prisoners, with the heraldic plants.

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Accounting For Accountability, Melvin J. Dubnick, Jonathan B. Justice Sep 2004

Accounting For Accountability, Melvin J. Dubnick, Jonathan B. Justice

Faculty Publications

Accountability is often presented as a means by which to achieve the collective and individual goods of democracy, justice, administrative performance, and ethical conduct in governance. Treating this presumption as a collection of testable hypotheses rather than as a self- evident truth leads to an interest in operationalizing and measuring accountability. Accountability is, however, a conceptually and empirically slippery word, subject to a host of competing definitions, interpretations, understandings, and rhetorical usages. One solution is to turn from accountability-the-word to accountability-the-concept. Consideration of the complexity of the conceptual space of accountability as well as its historical contingency suggests that the …

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Subverting Whiteness: Pedagogy At The Crossroads Of Performance, Culture, And Politics, J. Warren, Deanna Fassett Sep 2004

Subverting Whiteness: Pedagogy At The Crossroads Of Performance, Culture, And Politics, J. Warren, Deanna Fassett

Faculty Publications

No abstract available.

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Prickly Pear Cactus And Pastoralism In Southwest Madagascar, Jeffrey C. Kaufmann Sep 2004

Prickly Pear Cactus And Pastoralism In Southwest Madagascar, Jeffrey C. Kaufmann

Faculty Publications

Madagascar's Mahafale cattle raisers have adopted several species of the prickly pear cactus (Opuntia) into their subsistence patterns. Their use of Opuntia has had the economic effects of both sedentary and transhumant intensification. It lengthens the stay of pastoralists at their villages and structures the timing of their seasonal migration to distant pastures.

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Evaluation Of Power Costs In Applying Tmr To Fpga Designs, Nathaniel Rollins, Michael J. Wirthlin, Paul S. Graham Sep 2004

Evaluation Of Power Costs In Applying Tmr To Fpga Designs, Nathaniel Rollins, Michael J. Wirthlin, Paul S. Graham

Faculty Publications

Sponsorship: Los Alamos National Laboratory. Triple modular redundancy (TMR) is a technique commonly used to mitigate against design failures caused by single event upsets (SEUs). The SEU immunity that TMR provides comes at the cost of increased design area and decreased speed. Additionally, the cost of increased power due to TMR must be considered. This paper evaluates the power costs of TMR and validates the evaluations with actual measurements. Sensitivity to design placement is another important part of this study. Power consumption costs due to TMR are also evaluated in different FPGA architectures. This study shows that power consumption rises …

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Detection Of Configuration Memory Upsets Causing Persistent Errors In Sram-Based Fpgas, D. Eric Johnson, Keith S. Morgan, Michael J. Wirthlin, Michael P. Caffrey, Paul S. Graham Sep 2004

Detection Of Configuration Memory Upsets Causing Persistent Errors In Sram-Based Fpgas, D. Eric Johnson, Keith S. Morgan, Michael J. Wirthlin, Michael P. Caffrey, Paul S. Graham

Faculty Publications

Sponsorship: Los Alamos National Laboratory. FPGA designers are becoming increasingly aware of fault tolerance issues in modern FPGA designs, especially designs destined for a radiation environment. We classify errors due to upsets within the configuration bitstream into two categories; namely, persistent and non-persistent. Persistent errors generally cannot be tolerated. However, non-persistent errors can be tolerated in certain types of designs as long as they are properly accounted for. We discuss situations in which non-persistent errors are acceptable, and describe a technique for the detection of upsets causing persistent errors within the configuration memor of an SRAM-based FPGA.

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Jumpstarting Phylogenetic Analysis, Mark J. Clement, Keith A. Crandall, Kevin Seppi, Quinn O. Snell Sep 2004

Jumpstarting Phylogenetic Analysis, Mark J. Clement, Keith A. Crandall, Kevin Seppi, Quinn O. Snell

Faculty Publications

When a new epidemic strikes, it is often important to determine the relationship between the current organism and others that have been successfully treated previously. The phylogenetic analysis problem generates the most likely family tree for a group of organisms based on DNA sequence data. This process can take a prohibitively long period of time with current algorithms. If trees resulting from prior searches are used to seed the search, correct trees can be found much more quickly. This jumpstarting algorithm can generate superior phylogenetic solutions much more quickly than existing algorithms.

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Pharmacokinetics Of Once-Daily Amikacin In Healthy Foals And Therapeutic Drug Monitoring In Hospitalized Equine Neonates, Erica Paige Bucki, Steeve Giguère, Margo Macpherson, Rachel E. Davis Sep 2004

Pharmacokinetics Of Once-Daily Amikacin In Healthy Foals And Therapeutic Drug Monitoring In Hospitalized Equine Neonates, Erica Paige Bucki, Steeve Giguère, Margo Macpherson, Rachel E. Davis

Faculty Publications

The objectives of this study were to investigate the pharmacokinetics of once-daily amikacin in healthy neonates, to determine amikacin concentrations in hospitalized foals, and to determine the minimum inhibitory concentrations (MICs) of amikacin against gram-negative isolates from blood cultures in septic foals. Median half-life, clearance, and volume of distribution of amikacin in healthy 2- to 3-day-old foals after administration of an intravenous bolus of amikacin (25 mg/kg) were 5.07 hours (4.86-5.45 hours), 1.82 mL/min/kg (1.35-1.97 mL/min/kg), and 0.785 L/kg (0.638-0.862 L/kg), respectively. Statistically significant (P or = 3 microg/mL between the 2 groups. An initial dose at 25 mg/kg is …

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This Land Is Our Land: Immigrants And Power In Miami, Jimy M. Sanders Sep 2004

This Land Is Our Land: Immigrants And Power In Miami, Jimy M. Sanders

Faculty Publications

No abstract provided.

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Review Of The Software "La Chaise Berçante", Lara Lomicka Sep 2004

Review Of The Software "La Chaise Berçante", Lara Lomicka

Faculty Publications

No abstract provided.

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Every Polynomial-Time 1-Degree Collapses If And Only If P=Pspace, Stephen A. Fenner, Stuart A. Kurtz, James S. Royer Sep 2004

Every Polynomial-Time 1-Degree Collapses If And Only If P=Pspace, Stephen A. Fenner, Stuart A. Kurtz, James S. Royer

Faculty Publications

No abstract provided.

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Every Polynomial-Time 1-Degree Collapses If And Only If P=Pspace, Stephen A. Fenner, Stuart A. Kurtz, James S. Royer Sep 2004

Every Polynomial-Time 1-Degree Collapses If And Only If P=Pspace, Stephen A. Fenner, Stuart A. Kurtz, James S. Royer

Faculty Publications

No abstract provided.

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Aligning Paper Tests With Multimedia Instruction, Scott L. Howell Sep 2004

Aligning Paper Tests With Multimedia Instruction, Scott L. Howell

Faculty Publications

Although the "click-and-point" virtual classrooms of today hardly resemble the brick-and-mortar classrooms of yesterday, one thing seems to not have changed: the prevalence of paper-based tests. Paper-based tests have been the staple of education for centuries and will most likely persist for many years to come. This article explores some of the issues surrounding the growing chasm between the way students are now taught and how they are still tested from three perspectives: researcher, student, and teacher.

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When And How Trustworthiness Matters: Knowledge Transfer And The Moderating Effect Of Causal Ambiguity, Robert J. Jensen, Gabriel Szulanski, Rossella Cappetta Sep 2004

When And How Trustworthiness Matters: Knowledge Transfer And The Moderating Effect Of Causal Ambiguity, Robert J. Jensen, Gabriel Szulanski, Rossella Cappetta

Faculty Publications

The recognition that better use of existing internal knowledge could enhance survival chances or organizations has spawned substantial interest in the transferability of routinized, experiential learning to additional settings within the organization Previous research has established that trustworthiness of the source enhances such knowledge transfer. More recent work, however, suggests that this may not always be the case. Yet, little systematic attention has been paid to moderating conditions. The major purpose of this paper is to identify a moderator, causal ambiguity, which delineates the conditions as to when and how a recipient's perception of the trustworthiness of a source affects …

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The Palawai Pioneers On The Island Of Lanai: The First Hawaiian Latter-Day Saint Gathering Place (1854-1864), Fred E. Woods Sep 2004

The Palawai Pioneers On The Island Of Lanai: The First Hawaiian Latter-Day Saint Gathering Place (1854-1864), Fred E. Woods

Faculty Publications

A decade after the death of the Prophet Joseph Smith and his brother Hyrum, the message of the Restoration continued to breathe new spiritual life into thousands who were part of scattered Israel, and the Hawaiians were no exception. The call to gather had go forth: "Gather ye out from among the nations, from the four winds, from one end of heaven to the other. Send forth my elders of my church unto the nations, which are afar off; unto the islands of the sea" (D&C 133:7-8). After the Saints had been exiled from Nauvoo in 1846 and had migrated …

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Initial Experiments In The Cooperative Control Of Unmanned Air Vehicles, Derek R. Nelson, Timothy W. Mclain, Reed S. Christiansen, Randal W. Beard, David Johansen Sep 2004

Initial Experiments In The Cooperative Control Of Unmanned Air Vehicles, Derek R. Nelson, Timothy W. Mclain, Reed S. Christiansen, Randal W. Beard, David Johansen

Faculty Publications

This paper addresses cooperative control for a team of unmanned air vehicles (UAVs). Specifically, a team of three small UAVs is controlled to perform a cooperative timing mission. Starting at loiter locations distributed around the periphery of a 2 km square battle area, the UAVs cooperatively plan paths to arrive at a target at the center of the battle area in sequence at 10 sec intervals. Cooperative path planning is performed using the methodology of coordination variables and coordination functions. Coordination and waypoint path planning are centralized on a ground station computer. Experiments have been performed using BYU’s fleet of …

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Testing Species Boundaries In An Ancient Species Complex With Deep Phylogeographic History: Genus Xantusia (Squamata: Xantusiidae), Keith A. Crandall, Elizabeth A. Sinclair, Robert L. Bezy, Kathryn Bolles, Jose L. Camarillo, Jack W. Sites Sep 2004

Testing Species Boundaries In An Ancient Species Complex With Deep Phylogeographic History: Genus Xantusia (Squamata: Xantusiidae), Keith A. Crandall, Elizabeth A. Sinclair, Robert L. Bezy, Kathryn Bolles, Jose L. Camarillo, Jack W. Sites

Faculty Publications

Identification of species in natural populations has recently received increased attention with a number of investigators proposing rigorous methods for species delimitation. Morphologically conservative species (or species complexes) with deep phylogenetic histories (and limited gene flow) are likely to pose particular problems when attempting to delimit species, yet this is crucial to comparative studies of the geography of speciation. We apply two methods of species delimitation to an ancient group of lizards (genus Xantusia) that occur throughout southwestern North America. Mitochondrial cytochrome b and nicotinamide adenine dinucleotide dehydrogenase subunit 4 gene sequences were generated from samples taken throughout the geographic …

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Public Sector Transition In Post-Communist Economies: The Struggle For Fiscal Decentralization In The Czech And Slovak Republics, Phillip J. Bryson, Gary C. Cornia Sep 2004

Public Sector Transition In Post-Communist Economies: The Struggle For Fiscal Decentralization In The Czech And Slovak Republics, Phillip J. Bryson, Gary C. Cornia

Faculty Publications

Transition studies have often been studies of transitioning private sectors. How centralist governments withdraw from the business of micromanaging a nation's enterprises is a fascinating story indeed. The other side of the coin, how the public sector is to be brought to decentralization and democracy, is likewise of great moment for the peoples of the transitioning countries. Under central planning the tradition was to provide all public goods and services under the direction of the central government and its ministries. There were no genuine subnational governments, since all policy decisions pertaining to taxation and the distribution of public services were …

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Optimal Sampling For Single-Tone Frequency Estimation, Travis E. Oliphant Aug 2004

Optimal Sampling For Single-Tone Frequency Estimation, Travis E. Oliphant

Faculty Publications

Single-tone frequency estimation from irregularly spaced samples is analyzed. The ratio of the Cramr-Rao Bound (CRB) for regularly spaced samples to the bound for irregularly spaced samples is presented and shown to be a globally convex function. It's minima and maxima over the domain of interest are identified which reveals that improvements in the CRB can be obtained using non-equally-spaced samples. For a given sampling density, the best estimates of frequency are obtained when half of the samples are taken at one end of the total available interval and the remaining samples are taken at the other end.

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Merrill's Code For Classifiers, Anita Coleman Aug 2004

Merrill's Code For Classifiers, Anita Coleman

Faculty Publications

This Microsoft PowerPoint presentation of 25 slides includes several pictures and quotations about and from the "Code for Classifiers: Principles governing the consistent placing of books in a system of classification" by William Stetson Merrill. Coleman briefly explores the problems of classification presented in the Code, the model of collaboration that was used to develop the principles documented in the various editions of the Code, and how the Code can be used to develop a federated classification (classifying) model for digital library organization. The discussion also makes it clear that early American library classification was not just a "mark and …

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Noncontact Scanning Impedance Imaging In An Aqueous Solution, Aaron R. Hawkins, Hongze Liu, Travis E. Oliphant, Stephen M. Schultz Aug 2004

Noncontact Scanning Impedance Imaging In An Aqueous Solution, Aaron R. Hawkins, Hongze Liu, Travis E. Oliphant, Stephen M. Schultz

Faculty Publications

We present a method for imaging based on noncontact electrical impedance measurements and mechanical scanning. Measurement results are shown for an initial system based on this concept. An impedance probe design is presented, applicable to the test system. Line-scan data plots of high impedance contrast structures show a good fit to a theoretical physical model. Image resolutions on the order of 100 m are indicated for the initial system. Two-dimensional impedance images of biological tissue generated by this technique are shown.

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An Unusually Large Aulocopella Winnipegensis And Associated Demosponges From The Upper Ordovician Beaverfoot Formation, Southeastern British Columbia, J. Keith Rigby, Paul A. Johnston Aug 2004

An Unusually Large Aulocopella Winnipegensis And Associated Demosponges From The Upper Ordovician Beaverfoot Formation, Southeastern British Columbia, J. Keith Rigby, Paul A. Johnston

Faculty Publications

An unusually large specimen of the rare digitate to bladed Aulocopella winnipegensis Rauff and three relatively normal sized specimens of ashtray-shaped Hudsonospongia? sp. constitute the first record of demosponges from the Upper Ordovician Beaverfoot Formation in southeastern British Columbia and the first record of these taxa from western Canada. Gross form and canal structure are well preserved, but dolomitization and (or) coarse microsphaeroidal silicification have obliterated spicules and other structural details. We interpret these sponges as epifaunal recliners, without means of attachment to the substrate, a life mode rarely encountered in the modern sponge biota.

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Percolation Paths Of Three-Dimensions In Sensitized Stainless Steel, Alisa J. Millar Henrie Aug 2004

Percolation Paths Of Three-Dimensions In Sensitized Stainless Steel, Alisa J. Millar Henrie

Faculty Publications

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 boundaries with no known special qualities; they are not …

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T-Spline Simplification And Local Refinement, David L. Cardon, G. Thomas Finnigan, Nicholas S. North, Thomas W. Sederberg, Jianmin Zheng, Tom Lyche Aug 2004

T-Spline Simplification And Local Refinement, David L. Cardon, G. Thomas Finnigan, Nicholas S. North, Thomas W. Sederberg, Jianmin Zheng, Tom Lyche

Faculty Publications

A typical NURBS surface model has a large percentage of superfluous control points that significantly interfere with the design process. This paper presents an algorithm for eliminating such superfluous control points, producing a T-spline. The algorithm can remove substantially more control points than competing methods such as B-spline wavelet decomposition. The paper also presents a new T-spline local refinement algorithm and answers two fundamental open questions on T-spline theory.

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President's Page, Samantha K. Hastings Aug 2004

President's Page, Samantha K. Hastings

Faculty Publications

No abstract provided.

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Characteristics Of Preschoolers With Lower Perceived Competence, Robert J. Coplan, Leanne C. Findlay, Larry J. Nelson Aug 2004

Characteristics Of Preschoolers With Lower Perceived Competence, Robert J. Coplan, Leanne C. Findlay, Larry J. Nelson

Faculty Publications

The goal of the present study was to identify preschool children with “age-inappropriate” less positive self-perceptions, and to explore their parental and peer relationships as compared to their classmates with “age normal” self-perceptions. Participants were n = 127 preschool children (M age = 54.98 mos., SD = 8.21). Data were collected from multiple sources including parental ratings, child self-reports, and teacher ratings. Results indicated that as compared to their peers, children with less positive self-perceptions demonstrated more internalizing problems (i.e., loneliness, social-withdrawal), were more excluded by peers, and had mothers with less positive parenting styles. Results are discussed in …

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High Efficiency 90 Degree Silica Waveguide Bend Using An Air Hole Photonic Crystal Region, J. Cai, S. Kim, Gregory P. Nordin, J. Jiang Aug 2004

High Efficiency 90 Degree Silica Waveguide Bend Using An Air Hole Photonic Crystal Region, J. Cai, S. Kim, Gregory P. Nordin, J. Jiang

Faculty Publications

We propose the hybrid integration of an air hole photonic crystal (PhC) structure with a high (0.75%) single-mode silica waveguide to achieve an ultracompact high efficiency 90 bend for transverse-magnetic polarized light. Diffraction from the periodic boundary between the PhC and silica waveguide regions is shown to seriously degrade the optical efficiency of the bend. A microgenetic algorithm ( GA) combined with a two-dimensional finite-difference time-domain method is used to modify the PhC and its boundary layer to suppress this diffraction which in turn maximizes bend efficiency. The final optimized structure has a 99.4% bend efficiency at a wavelength of …

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Feature Weighting Using Neural Networks, Tony R. Martinez, Xinchuan Zeng Jul 2004

Feature Weighting Using Neural Networks, Tony R. Martinez, Xinchuan Zeng

Faculty Publications

In this work we propose a feature weighting method for classification tasks by extracting relevant information from a trained neural network. This method weights an attribute based on strengths (weights) of related links in the neural network, in which an important feature is typically connected to strong links and has more impact on the outputs. This method is applied to feature weighting br the nearest neighbor classifier and is tested on 15 real-world classification tasks. The results show that it can improve the nearest neighbor classifier on 14 of the 15 tested tasks, and also outperforms the neural network on …

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Using Permutations Instead Of Student’S T Distribution For P-Values In Paired-Difference Algorithm Comparisons, Tony R. Martinez, Joshua Menke Jul 2004

Using Permutations Instead Of Student’S T Distribution For P-Values In Paired-Difference Algorithm Comparisons, Tony R. Martinez, Joshua Menke

Faculty Publications

The paired-difference t-test is commonly used in the machine learning community to determine whether one learning algorithm is better than another on a given learning task. This paper suggests the use of the permutation test instead hecause it calculates the exact p-value instead of an estimate. The permutation test is also distribution free and the time complexity is trivial for the commonly used 10-fold cross-validation paired-difference test. Results of experiments on real-world problems suggest it is not uncommon to see the t-test estimate deviate up to 30-50% from the exact p-value.

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Softprop: Softmax Neural Network Backpropagation Learning, Tony R. Martinez, Michael E. Rimer Jul 2004

Softprop: Softmax Neural Network Backpropagation Learning, Tony R. Martinez, Michael E. Rimer

Faculty Publications

Multi-layer backpropagation, like many learning algorithms that can create complex decision surfaces, is prone to overfitting. Softprop is a novel learning approach presented here that is reminiscent of the softmax explore-exploit Q-learning search heuristic It fits the problem while delaying settling into error minima to achieve better generalization and more robust learning. This is accomplished by blending standard SSE optimization with lazy training, a new objective function well suited to learning classification tasks, to form a more stable learning model. Over several machine learning data sets, softprop reduces classification error by 17.1 percent and the variance in results by 38.6 …

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