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Impact Of The Texas Leaf-Cutting Ant (Atta Texana (Buckley) (Order Hymenoptera, Family Formicidae) On A Forested Landscape, David Kulhavy, L. A. Smith, W. G. Ross Jan 2001

Impact Of The Texas Leaf-Cutting Ant (Atta Texana (Buckley) (Order Hymenoptera, Family Formicidae) On A Forested Landscape, David Kulhavy, L. A. Smith, W. G. Ross

Faculty Publications

Atta texana (Buckley), the Texas leaf-cutting ant, rapidly expanded in a harvested forested landscape on sandhills characterized by droughty soils, causing mortality of planted loblolly pine (Pinus taeda (L.)). The site, composed primarily of Quartzipsamments soils classified as thermic coated Typic Quartzipsamments in the Tonkawa soil series, accounts for approximately 5,000 ha in Nacogdoches, Rusk, Panola, and San Augustine Counties in eastern Texas, USA (Dolezel 1980). These soils are characterized by low fertility, rapid permeability, and extreme acid reaction. These sandhills are resistant to erosion and are considered important ground water recharge areas. The distribution of A. texana central …

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Il-1Α And Tnf-Α Down-Regulate Crh Receptor-2 Mrna Expression In The Mouse Heart, Sarah C. Coste, Kurt A. Heldwein, Susan L. Stevens, Eric Tobar-Dupres, Mary P. Stenzel-Poore Jan 2001

Il-1Α And Tnf-Α Down-Regulate Crh Receptor-2 Mrna Expression In The Mouse Heart, Sarah C. Coste, Kurt A. Heldwein, Susan L. Stevens, Eric Tobar-Dupres, Mary P. Stenzel-Poore

Faculty Publications

Two receptors (CRH receptor type 1 and CRH receptor type 2) have been identified for the stress-induced neuropeptide, CRH and related peptides, urocortin, and urocortin II. We previously found marked down-regulation of cardiac CRH receptor type 2 expression following administration of bacterial endotoxin, lipopolysaccharide, a model of systemic immune activation, and inflammation. We postulated that inflammatory cytokines may regulate CRH receptor type 2. We show that systemic IL-1α administration significantly down-regulates CRH receptor type 2 mRNA in mouse heart. In addition, TNFα treatment also reduces CRH receptor type 2 mRNA expression, although the effect was not as marked as with …

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Chloropigment Distribution And Transport On The Inner Shelf Off Duck, North Carolina, E.J. D'Sa, S.E. Lohrenz, J.H. Churchill, V.L. Asper, J.L. Largier, A.J. Williams Iii Jan 2001

Chloropigment Distribution And Transport On The Inner Shelf Off Duck, North Carolina, E.J. D'Sa, S.E. Lohrenz, J.H. Churchill, V.L. Asper, J.L. Largier, A.J. Williams Iii

Faculty Publications

No abstract provided.

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Hair Comparison Evidence, Paul C. Giannelli Jan 2001

Hair Comparison Evidence, Paul C. Giannelli

Faculty Publications

No abstract provided.

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The Use Of Placebos In Clinical Trials: Responsible Research Or Unethical Practice?, Sharona Hoffman Jan 2001

The Use Of Placebos In Clinical Trials: Responsible Research Or Unethical Practice?, Sharona Hoffman

Faculty Publications

Developments in medical research have been occurring at a rapidly increasing rate during the past two decades. Expanding budgets, augmented computer capabilities, and new research tools have all dramatically enhanced research technology. Accompanying the proliferation of medical research are increasing concerns about research risks. This article focuses on placebo-controlled clinical trials. The use of placebos enables clinical investigators to compare results from subjects taking an experimental intervention to results from a group that is receiving an inactive substance, such as a sugar pill, in order to determine the efficacy of the new medication. In recent years, some surgeons have also …

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Colonialism And Landscape In The Americas: Material/Conceptual Transformations And Continuing Consequences, Andrew Sluyter Jan 2001

Colonialism And Landscape In The Americas: Material/Conceptual Transformations And Continuing Consequences, Andrew Sluyter

Faculty Publications

No abstract provided.

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Ganadería Española Y Cambio Ambiental En Las Tierras Bajas Tropicales De Veracruz, México, Siglo Xvi, Andrew Sluyter Jan 2001

Ganadería Española Y Cambio Ambiental En Las Tierras Bajas Tropicales De Veracruz, México, Siglo Xvi, Andrew Sluyter

Faculty Publications

No abstract provided.

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Comparison Of Genomic And Predicted Amino Acid Sequences Of Respiratory And Enteric Bovine Coronaviruses Isolated From The Same Animal With Fatal Shipping Pneumonia, V. N. Chouljenko, X. Q. Lin, J. Storz, K. G. Kousoulas, A. E. Gorbalenya Jan 2001

Comparison Of Genomic And Predicted Amino Acid Sequences Of Respiratory And Enteric Bovine Coronaviruses Isolated From The Same Animal With Fatal Shipping Pneumonia, V. N. Chouljenko, X. Q. Lin, J. Storz, K. G. Kousoulas, A. E. Gorbalenya

Faculty Publications

The complete genome sequences are reported here of two field isolates of bovine coronavirus (BCoV), which were isolated from respiratory and intestinal samples of the same animal experiencing fatal pneumonia during a bovine shipping fever epizootic. Both genomes contained 31028 nucleotides and included 13 open reading frames (ORFs) flanked by 5′- and 3′-untranslated regions (UTRs). ORF1a and ORF1b encode replicative polyproteins pp1a and pp1ab, respectively, that contain all of the putative functional domains documented previously for the closest relative, mouse hepatitis virus. The genomes of the BCoV isolates differed in 107 positions, scattered throughout the genome except the 5′-UTR. Differences …

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Elucidation Of The Genomic Nucleotide Sequence Of Bovine Coronavirus And Analysis Of Cryptic Leader Mrna Fusion Sites, Vladimir N. Chouljenko, Timothy P. Foster, Xiaoqing Lin, Johannes Storz, Konstantin G. Kousoulas Jan 2001

Elucidation Of The Genomic Nucleotide Sequence Of Bovine Coronavirus And Analysis Of Cryptic Leader Mrna Fusion Sites, Vladimir N. Chouljenko, Timothy P. Foster, Xiaoqing Lin, Johannes Storz, Konstantin G. Kousoulas

Faculty Publications

No abstract provided.

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A Phylogenetic Analysis Of Variation In Reproductive Mode Within An Australian Lizard (Saiphos Equalis, Scincidae), Sarah A. Smith, Christopher C. Austin, Richard Shine Jan 2001

A Phylogenetic Analysis Of Variation In Reproductive Mode Within An Australian Lizard (Saiphos Equalis, Scincidae), Sarah A. Smith, Christopher C. Austin, Richard Shine

Faculty Publications

Saiphos equalis, a semi-fossorial scincid lizard from south-eastern Australia, is one of only three reptile species world-wide that are known to display geographic variation in reproductive mode. Uniquely, Saiphos equalis includes populations with three reproductive modes: oviparous with long (15-day) incubation periods; oviparous with short (5-day) incubation periods; and viviparous (0-day incubation periods). No Saipho populations show 'normal' scincid oviparity (>30-day incubation period). We used mitochondrial nucleotide sequences (ND2 and cytochrome b) to reconstruct relationships among populations from throughout the species' distribution in New South Wales, Australia. Under the phylogenetic species concept, phylogenetic analyses are consistent with the oviparous …

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Rickettsia Felis: Molecular Characterization Of A New Member Of The Spotted Fever Group, D. H. Bouyer, J. Stenos, P. Crocquet-Valdes, C. G. Moron, V. L. Popov, J. E. Zavala-Velazquez, L. D. Foil, D. R. Stothard, A. F. Azad, D. H. Walker Jan 2001

Rickettsia Felis: Molecular Characterization Of A New Member Of The Spotted Fever Group, D. H. Bouyer, J. Stenos, P. Crocquet-Valdes, C. G. Moron, V. L. Popov, J. E. Zavala-Velazquez, L. D. Foil, D. R. Stothard, A. F. Azad, D. H. Walker

Faculty Publications

In this report, placement of Rickettsia felis in the spotted fever group (SFG) rather than the typhus group (TG) of Rickettsia is proposed. The organism, which was first observed in cat fleas (Ctenocephalides felis) by electron microscopy, has not yet been reported to have been cultivated reproducibly, thereby limiting the standard rickettsial typing by serological means. To overcome this challenge, several genes were selected as targets to be utilized for the classification of R. felis. DNA from cat fleas naturally infected with R. felis was amplified by PCR utilizing primer sets specific for the 190 kDa surface antigen (rOmpA) and …

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The Genetics Of Reproductive Isolation And The Potential For Gene Exchange Between Drosophila Pseudoobscura And D. Persimilis Via Backcross Hybrid Males, Mohamed A.F. Noor, Katherine L. Grams, Lisa A. Bertucci, Yvette Almendarez, Jane Reiland, Kelley R. Smith Jan 2001

The Genetics Of Reproductive Isolation And The Potential For Gene Exchange Between Drosophila Pseudoobscura And D. Persimilis Via Backcross Hybrid Males, Mohamed A.F. Noor, Katherine L. Grams, Lisa A. Bertucci, Yvette Almendarez, Jane Reiland, Kelley R. Smith

Faculty Publications

Hybrid male sterility, hybrid inviability, sexual isolation, and a hybrid male courtship dysfunction reproductively isolate Drosophila pseudoobscura and D. persimilis. Previous studies of the genetic bases of these isolating mechanisms have yielded only limited information about how much and what areas of the genome are susceptible to interspecies introgression. We have examined the genetic basis of these barriers to gene exchange in several thousand backcross hybrid male progeny of these species using 14 codominant molecular genetic markers spanning the five chromosomes of these species, focusing particularly on the autosomes. Hybrid male sterility, hybrid inviability, and the hybrid male courtship dysfunction …

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Estimating The Unbiased Estimator Θ For Population Genetic Survey Data, Jacqueline J. Weicker, Robb T. Brumfield, Kevin Winker Jan 2001

Estimating The Unbiased Estimator Θ For Population Genetic Survey Data, Jacqueline J. Weicker, Robb T. Brumfield, Kevin Winker

Faculty Publications

We consider a method of approximating Weir and Cockerham's θ, an unbiased estimator of genetic population structure, using values readily available from published studies using biased estimators (Wright's FST or Nei's GST). The estimation algorithm is shown to be useful for both model populations and real-world avian populations. However, the correlation between Wright's FST and Weir and Cockerham's θ is strong when compared among 39 empirical avian datasets. Thus, the advantage of approximating an unbiased estimator is unclear considering the small actual effect of θ's bias-removing power on empirical datasets.

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Sexual Selection On Plumage And Behavior In An Avian Hybrid Zone: Experimental Tests Of Male-Male Interactions, David B. Mcdonald, Robert P. Clay, Robb T. Brumfield, Michael J. Braun Jan 2001

Sexual Selection On Plumage And Behavior In An Avian Hybrid Zone: Experimental Tests Of Male-Male Interactions, David B. Mcdonald, Robert P. Clay, Robb T. Brumfield, Michael J. Braun

Faculty Publications

In western Panama, an unusual hybrid zone exists between white-collared manakins, Manacus candei, and golden-collared manakins, M. vitellinus. Unidirectional introgression of plumage traits from vitellinus into candei has created a region in which all definitively plumaged males have a collar that is lemon-colored. These males are nearly indistinguishable from white-collared candei genetically and morphometrically, but strongly resemble golden-collared vitellinus due to the introgression of secondary sexual plumage traits, particularly the lemon-colored collar. The introgression could be explained by sexual selection for golden-collared traits or by a series of mechanisms that do not invoke sexual selection (e.g., neutral diffusion, dominant allele). …

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Effect Of Sweetpotato Genotype, Storage Time And Production Site On Feeding And Oviposition Behavior Of The Sweetpotato Weevil, Cylas Formicarius (Coleoptera: Apoinidae), L. Mao, R. N. Story, A. M. Hammond, D. R. Labonte Jan 2001

Effect Of Sweetpotato Genotype, Storage Time And Production Site On Feeding And Oviposition Behavior Of The Sweetpotato Weevil, Cylas Formicarius (Coleoptera: Apoinidae), L. Mao, R. N. Story, A. M. Hammond, D. R. Labonte

Faculty Publications

The effect of sweetpotato genotype, storage time and production site on Cylas formicarius (Fab.) feeding and oviposition was investigated. Sweetpotato genotype had a significant effect on feeding and oviposition rates in both no-choice and choice arenas. Beauregard and Centennial were uniformly susceptible across all age groups. W-250 had the least number of feeding punctures and eggs at 7 and 25 days after harvest. At 85 days after harvest, W-244 had the least number of feeding punctures and eggs, while W-250 was not significantly different from Beauregard and Centennial. Roots of the same genotype grown in different locations differed in the …

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The Asymptotic Equivalence Of The Fisher Information Matrices For Type I And Type Ii Censored Data From Location-Scale Families, Luis A. Escobar, William Q. Meeker Jan 2001

The Asymptotic Equivalence Of The Fisher Information Matrices For Type I And Type Ii Censored Data From Location-Scale Families, Luis A. Escobar, William Q. Meeker

Faculty Publications

Type I and Type II censored data arise frequently in controlled laboratory studies concerning time to a particular event (e.g., death of an animal or failure of a physical device). Log-location-scale distributions (e.g., Weibull, log-normal, and loglogistic) are commonly used to model the resulting data. Maximum likelihood (ML) is generally used to obtain parameter estimates when the data are censored. The Fisher information matrix can be used to obtain large-sample approximate variances and covariances of the ML estimates or to estimate these variances and covariances from data. The derivations of the Fisher information matrix proceed differently for Type I (time …

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Differential Detection Of Bartonella Species And Strains In Cat Scratch Disease Diagnostics By Polymerase Chain Reaction Amplification Of 16s Ribosomal Rna Gene, Ronald A. Tapp, Alma F. Roy, Richard E. Corstvet, Vincent L. Wilson Jan 2001

Differential Detection Of Bartonella Species And Strains In Cat Scratch Disease Diagnostics By Polymerase Chain Reaction Amplification Of 16s Ribosomal Rna Gene, Ronald A. Tapp, Alma F. Roy, Richard E. Corstvet, Vincent L. Wilson

Faculty Publications

Cat scratch disease (CSD) has been difficult to diagnose in animals because of the protracted clinical course of infection and the quiescent phases when the microbial culprit lies dormant. The causative agent in CSD appears to be multiple species and strains of Bartonella. Using polymerase chain reaction (PCR) techniques for amplification of highly variable regions of the 16S ribosomal RNA (rRNA) gene sequence, a very sensitive species- and strain-specific assay for CSD-causing Bartonella species was developed. PCR primers were designed to specifically amplify the 16S rRNA gene of Bartonella species but not of other microbial pathogens. This initial PCR was …

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Race And Races: Constructing A New Legal Actor, Margalynne J. Armstrong Jan 2001

Race And Races: Constructing A New Legal Actor, Margalynne J. Armstrong

Faculty Publications

No abstract provided.

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Storytelling, Folktales And The Comic Book Format, Gail De Vos Jan 2001

Storytelling, Folktales And The Comic Book Format, Gail De Vos

Faculty Publications

The reading process in comics is an extension of text. In text alone the process of reading involves word-to-image conversion. Comics accelerate that by providing the image. When properly executed, it goes beyond conversion and speed and becomes a seamless whole. In every sense, this misnamed form of reading is entitled to be regarded as literature because the images are employed as a language. There is a recognizable relationship to the iconography and pictographs of oriental writing. When this language is employed as a conveyance of ideas and information, it separates itself from mindless visual entertainment. This makes comics a …

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Using Upper Boundary Constraints To Quantify Competitive Response Of Desert Annuals, Laura M. Lessin, Andrew R. Dyer, Deborah E. Goldberg Jan 2001

Using Upper Boundary Constraints To Quantify Competitive Response Of Desert Annuals, Laura M. Lessin, Andrew R. Dyer, Deborah E. Goldberg

Faculty Publications

Using a target-neighborhood approach with six annual dicot species in the Negev Desert of Israel, we tested whether neighborhood biomass constrained the upper limit of plant performance and if the slope of the upper boundary was correlated to species trait means, such as relative growth rate (RGR) and seed mass. Target individuals were measured in early spring and then collected at the onset of the dry season along with all naturally occurring neighbors within a 5-cm radius of the target. Using a minimum of 50 samples for each of the six target species, we found no significant relationships between target …

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An Operator-Based Account Of Semantic Processing, Deryle W. Lonsdale, C. Anton Rytting Jan 2001

An Operator-Based Account Of Semantic Processing, Deryle W. Lonsdale, C. Anton Rytting

Faculty Publications

This paper explores issues of psychological plausibility in modeling natural language understanding within Soar, a symbolic cognitive model. It focuses on constructing syntactic and semantic representations in simulated real time, with particular emphasis on word sense disambiguation (WSD). We discuss (i) what level of WSD should be modeled and (ii) how to use resources such as WordNet to inform these models. A preliminary model of coarse-grained WSD is included to show how syntactic, semantic, and other knowledge sources interact in Soar. Finally, we explore issues of interleaving, learning, and integrating other WSD approaches with Soar's native model of learning.

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Contractual Choice Of Law: Legislative Choice In An Era Of Party Autonomy, William J. Woodward Jr. Jan 2001

Contractual Choice Of Law: Legislative Choice In An Era Of Party Autonomy, William J. Woodward Jr.

Faculty Publications

No abstract provided.

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"Language-Qualifying" Juries To Exclude Bilingual Speakers, Marina C. Hsieh Jan 2001

"Language-Qualifying" Juries To Exclude Bilingual Speakers, Marina C. Hsieh

Faculty Publications

No abstract provided.

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Consensus Ontologies: Reconciling The Semantics Of Web Pages And Agents, Larry M. Stevens, Michael N. Huhns Jan 2001

Consensus Ontologies: Reconciling The Semantics Of Web Pages And Agents, Larry M. Stevens, Michael N. Huhns

Faculty Publications

As you build a Web site, it is worthwhile asking, "Should I put my information where it belongs or where people are most likely to look for it?" Our recent research into improving searching through ontologies is providing some interesting results to answer this question. The techniques developed by our research bring organization to the information received and reconcile the semantics of each document. Our goal is to help users retrieve dynamically generated information that is tailored to their individual needs and preferences. We believe that it is easier for individuals or small groups to develop their own ontologies, regardless …

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Not So Different: Tangible, Intangible, Digital, And Analog Works And Their Comparison For Copyright Purposes, I. Trotter Hardy Jan 2001

Not So Different: Tangible, Intangible, Digital, And Analog Works And Their Comparison For Copyright Purposes, I. Trotter Hardy

Faculty Publications

No abstract provided.

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A Preliminary Assessment Of Tidal Flooding Along The New Hampshire Coast: Past, Present And Future, Larry G. Ward, Jamie R. Adams Jan 2001

A Preliminary Assessment Of Tidal Flooding Along The New Hampshire Coast: Past, Present And Future, Larry G. Ward, Jamie R. Adams

Faculty Publications

This report presents the results of a preliminary study that examines several critical coastal issues for New Hampshire including sea level fluctuations (past, present and future), shoreline migrations, and tidal flooding. Included are: 1) an analysis of sea level changes over the Holocene and resulting shoreline migrations, 2) an assessment of low-lying areas with elevations below selected tidal flooding datums in coastal areas, and 3) an assessment of increases in low-lying areas that are potentially at risk to tidal flooding over the next century due to sea level rise.

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Public Librarians And The Civil Rights Movement: Alabama, 1955-1965, Patterson Toby Graham Jan 2001

Public Librarians And The Civil Rights Movement: Alabama, 1955-1965, Patterson Toby Graham

Faculty Publications

Racial segregation in southern public libraries affected millions of African Americans before the Civil Rights movement, and for librarians in the South it created a conflict between professional and regional values. Ultimately, it was the efforts of black activists rather than librarians acting on their ethical impulses that ended library segregation. Librarians were constrained by local racial customs, Jim Crow laws, and, often, by their own racial attitudes. Also, librarians recognized that there were inherent dangers associated with defying the segregationists. There were a few, however, who challenged the racial status quo, and these individuals demonstrated the potential of librarians …

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Congressional Factfinding And The Scope Of Judicial Review: A Preliminary Analysis, Neal Devins Jan 2001

Congressional Factfinding And The Scope Of Judicial Review: A Preliminary Analysis, Neal Devins

Faculty Publications

No abstract provided.

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Contact (Chapter 2 Of The Book Between Gay And Straight: Understanding Friendship Across Sexual Orientation"), Lisa M. Tillmann Ph.D. Jan 2001

Contact (Chapter 2 Of The Book Between Gay And Straight: Understanding Friendship Across Sexual Orientation"), Lisa M. Tillmann Ph.D.

Faculty Publications

“Contact” is chapter 2 of the book Between Gay and Straight: Understanding Friendship Across Sexual Orientation (AltaMira Press, 2001). The timeframe portrayed extends from June 1994 to September 1995. It opens with my boyfriend Doug meeting David Holland, who would become our first gay male friend. David and his partner Chris introduce us to gay spaces around Tampa. Also in this chapter, Doug begins his four-year tenure with The Cove, a team in the predominantly gay Suncoast Softball league.

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Latin American Legal History: Some Essential Spanish Terms, M C. Mirow Jan 2001

Latin American Legal History: Some Essential Spanish Terms, M C. Mirow

Faculty Publications

Terms related to Latin American legal history translated into English.

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