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2009

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Using Icesat's Geoscience Laser Altimeter System To Assess Large Scale Forest Disturbance Caused By Hurricane Katrina, Katelyn A. Dolan Jan 2009

Using Icesat's Geoscience Laser Altimeter System To Assess Large Scale Forest Disturbance Caused By Hurricane Katrina, Katelyn A. Dolan

Master's Theses and Capstones

We assessed the use of GLAS data as a tool to quantify large-scale forest damage. GLAS data for the year prior to and following Hurricane Katrina were compared to wind speed, forest cover, and MODIS NPV maps to analyze senor sampling, and changes in mean canopy height. We detected significant losses in mean canopy height post-Katrina that increased with wind intensity, from ∼.5m in forests hit by tropical storm winds to ∼4m in forests experiencing category two force winds. Season of data acquisition was shown to influence calculations of mean canopy height. There was insufficient sampling to adequately detect changes …

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Patterns Of Population Structure And Productivity In Saltmarsh Sparrows, Jennifer Walsh Jan 2009

Patterns Of Population Structure And Productivity In Saltmarsh Sparrows, Jennifer Walsh

Master's Theses and Capstones

The Saltmarsh Sparrow (Ammodramus caudacutus) is one of the few species globally that is exclusively restricted to coastal wetlands. Despite the high vagility characteristic of avian species, the highly patchy distribution of tidal marshes can often lead to fine scale genetic structure in salt marsh obligates. To elucidate patterns of population structure, we investigated the degree of genetic differentiation among nine Saltmarsh Sparrow populations along the northeastern coastline of the United States. Although overall FST values were small (0.008), population substructuring was detected along with a positive correlation between geographic distance and genetic differentiation, suggesting that Ammodramus caudacutus follow an …

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Genome-Wide Mapping Of Beaf Binding Sites In Drosophila Links Beaf To Transcription, Nan Jiang Jan 2009

Genome-Wide Mapping Of Beaf Binding Sites In Drosophila Links Beaf To Transcription, Nan Jiang

LSU Doctoral Dissertations

Gene expression is regulated by the chromatin environment and various cis-regulatory elements. Gene activators and repressors target specific regulatory elements in the genome to regulate nearby genes. But they function only in limited regions called domains. In each domain, genes are regulated independently without interference from outside. Boundary elements (insulators), binding sites for insulator proteins, are proposed to separate neighboring domains. One function of insulators is to block interactions between an enhancer and a promoter if positioned between them; the second function is to block the spreading of certain chromatin states along chromatin. BEAF-32 (with two 32 kDa variants: BEAF-32A …

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Sharing Stories: Narrative Lawyering In Bench Trials, Paul Holland Jan 2009

Sharing Stories: Narrative Lawyering In Bench Trials, Paul Holland

Faculty Articles

Narrative lawyering theorists have demonstrated the ways in which the dynamics of stories affect the way lawyers deliver and jurors receive messages within trial. However, relatively little attention has been paid to the distinctive ways in which stories are developed in bench trials. Examining three roughly contemporaneous bench trials, this Article illuminates how this trial format requires lawyers to be both performers and audience, alternating roles frequently, sometimes within the span of a breath or a gesture. The availability of feedback to the lawyer and the possibility of direct intervention by the fact-finder produce a stark contrast to what lawyers …

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Environmental Impact Assessment In Post-Colonial Societies: Reflections On The Proposed Expansion Of The Panama Canal, Carmen Gonzalez Jan 2009

Environmental Impact Assessment In Post-Colonial Societies: Reflections On The Proposed Expansion Of The Panama Canal, Carmen Gonzalez

Faculty Articles

Post-colonial societies endowed with abundant natural resources often under-perform economically when these resources are exploited as economic enclaves lacking significant linkages to other sectors of the economy. The Panama Canal, a symbol of Panamanian identity and a reminder of Panama's lengthy colonial history, has historically functioned as an economic enclave akin to the mineral extraction and industrial agriculture enclaves prevalent throughout the developing world. Based on a case study of the contentious decision to expand the Panama Canal, this article examines the ways in which the colonial legacy distorts the development planning process, and discusses strategies that might be deployed …

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Pressure-Driven Transport Of Particles Through A Converging-Diverging Microchannel, Ye Ai, Sang W. Joo, Xiangchun Xuan, Shizhi Qian Jan 2009

Pressure-Driven Transport Of Particles Through A Converging-Diverging Microchannel, Ye Ai, Sang W. Joo, Xiangchun Xuan, Shizhi Qian

Mechanical & Aerospace Engineering Faculty Publications

Pressure-driven transport of particles through a symmetric converging-diverging microchannel is studied by solving a coupled nonlinear system, which is composed of the Navier-Stokes and continuity equations using the arbitrary Lagrangian-Eulerian finite-element technique. The predicted particle translation is in good agreement with existing experimental observations. The effects of pressure gradient, particle size, channel geometry, and a particle's initial location on the particle transport are investigated. The pressure gradient has no effect on the ratio of the translational velocity of particles through a converging-diverging channel to that in the upstream straight channel. Particles are generally accelerated in the converging region and then …

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Global Behavior Of Solutions To A Class Of Second-Order Rational Difference Equations, Sukanya Basu Jan 2009

Global Behavior Of Solutions To A Class Of Second-Order Rational Difference Equations, Sukanya Basu

Open Access Dissertations

For every choice of positive parameters α, β, γ, A, B and C, consider the two difference equations [special characters omitted] and [special characters omitted] In this thesis, it is shown that all solutions to Eqns.(E1) and (E2) converge to the positive equilibrium or to a prime period-two solution. A complete qualitative description of the global behavior of solutions to (El) with nonnegative parameters is also given in this thesis whenever prime period-two solutions exist. Furthermore, a relation is established between local stability of equilibria and slopes of critical curves of planar maps. Then this result is used to give …

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Bio-Optical And Remote Sensing Investigation Of Phytoplankton Community Size Structure, Colleen Beckmann Mouw Jan 2009

Bio-Optical And Remote Sensing Investigation Of Phytoplankton Community Size Structure, Colleen Beckmann Mouw

Open Access Dissertations

This dissertation examines the optical and ecological role of phytoplankton cell size in the context of chlorophyll concentration and the presence of other optically active constituents. The first study isolates the effect phytoplankton cell size has on varying spectral remote sensing reflectance (Rrs(λ)) through the use of optical and radiative transfer models that are linked in an off-line diagnostic calculation to a global monthly numerical model. Two separate simulations of the optical model were run with cell size-dependent and cell size-independent phytoplankton absorption with all other optical constituents treated identically. The consideration of size-varying phytoplankton absorption resulted in more realistic …

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Making Room For One Another: Practicing Dynamic And Designed Dialogicality In A Kindergarten Classroom, Gerri August Jan 2009

Making Room For One Another: Practicing Dynamic And Designed Dialogicality In A Kindergarten Classroom, Gerri August

Open Access Dissertations

The territory of this critical ethnography lies at the intersection of democratic, transformative pedagogy and differences that made a difference in an urban kindergarten. It is an interpretation of a democratic, transformative educator responding to sociocultural differences that emerged in the classroom discourse. Often, such differences lead to otherization. This study interprets the constraints and possibilities that encouraged students to recognize and respect difference. The kindergarten classroom is interpreted in the framework of activity theory. Drawing largely on discourse analysis, this interpretation turns on the interplay between two primary elements in the activity system. The first is Zeke, the kindergarten …

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Benthic Macrofauna In Narragansett Bay, Rhode Island: An Examination Of Factors Causing Variability In Community Structure, Christopher John Calabretta Jan 2009

Benthic Macrofauna In Narragansett Bay, Rhode Island: An Examination Of Factors Causing Variability In Community Structure, Christopher John Calabretta

Open Access Dissertations

Benthic macrofaunal communities in the upper Narragansett Bay, Rhode Island have been sampled annually since 2000 as part of the Narragansett Bay Benthic Study (NBBS). This work explored the natural and anthropogenic drivers underlying spatial and temporal variability in benthic community structure. Spatial variability in the structure of Narragansett Bay's benthic macrofaunal communities was related to the degree of exposure to anthropogenic stress. Results suggested a progression in the structure of benthic assemblages from early successional stages in the areas of Mt. Hope Bay and Conimicut Point, to an intermediate stage at the mouth of Greenwich Bay and culminating with …

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A Validation Study Of The Misbehaviors Questionnaire, Racheal Taki Reavy Jan 2009

A Validation Study Of The Misbehaviors Questionnaire, Racheal Taki Reavy

Open Access Dissertations

This study examined the validity of the Misbehaviors Questionnaire (MBQ), a revision of the Self Report Delinquency scale, which aims to diagnose conduct disorder (CD) and to serve as a valid measure for assessing misbehaviors. The MBQ further assesses whether each misbehavior involved the use of alcohol or marijuana, allowing for comparisons of substance-related clusters of misbehaviors. Participants were 190 incarcerated adolescents (85.8% male; average age 17 years) at a juvenile correctional facility in the Northeast. While incarcerated, they were asked about substance use and misbehaviors in the three months prior to incarceration, as well as parental, peer, and demographic …

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Exploration Of The Quality Of Three Measures For Assessing State Anxiety In Hospitalized Cardiac Patients, Kari A. Radford Jan 2009

Exploration Of The Quality Of Three Measures For Assessing State Anxiety In Hospitalized Cardiac Patients, Kari A. Radford

Open Access Dissertations

For many years it has been documented that cardiac patients in the acute care setting experience episodic elevations in anxiety which often have a significant, negative physiological impact. The purpose of this exploratory study was to test three state anxiety short-form scales (NEWTEN - a newly created scale, Anxiety Scale - AS, and SAI-6 - short form of Spielberger's State Anxiety Inventory-SAI) for measuring state anxiety in hospitalized cardiac patients. Criteria-related validity was used to correlate each state anxiety scale with Spielberger's SAI, which is considered the gold standard and has yielded high levels of validity and reliability. The study …

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Scoring Silent Film: Music/Nation/Affect, George Steele Jan 2009

Scoring Silent Film: Music/Nation/Affect, George Steele

Open Access Dissertations

Scoring Silent Film: Music/Nation/Affect studies the history of film music as a way to understand how the "soundtrack" operates in contemporary popular culture. I argue that forms of playful appropriation of film music today, as in the technological innovations of iPod culture, of re-mixing movie trailers on YouTube, or most importantly, of performing original scores live to silent film are all implicated in past industrial cinematic production practices. Early twentieth century film accompaniment in America began as something commentarial before an industry preoccupied with its social and affective influence began to shape its course. In time, the ability for improvisational …

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Therapeutic Treatments For Children With Recurrent Abdominal Pain: A Multiple Baseline Pilot Study, Christine Barrett Sieberg Jan 2009

Therapeutic Treatments For Children With Recurrent Abdominal Pain: A Multiple Baseline Pilot Study, Christine Barrett Sieberg

Open Access Dissertations

Chronic pain in children is a significant problem affecting about 15-20% of children (Goodman & McGrath, 1991), yet it is a neglected area in pediatric research and clinical service. Recurrent Abdominal Pain (RAP) is an example of chronic pain in children and one of the most common complaints of childhood and is associated with many adverse outcomes. Research has also identified parental anxiety and depression as potent risk factors for RAP (Garber et al., 1990). Despite the high prevalence rates of RAP, only 12 intervention studies from 1974-2006 have been conducted in this area (Spirito & Kazak, 2006). The primary …

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Solubility And Permeability Enhancement Of Levothyroxine Sodium For Oral Administration, Dimple Pabla Jan 2009

Solubility And Permeability Enhancement Of Levothyroxine Sodium For Oral Administration, Dimple Pabla

Open Access Dissertations

Levothyroxine (14), an endogenous hormone secreted by the thyroid gland is subject to complex biologic regulation. On conversion to active metabolite, triiodothyronine, 14 influences diverse metabolic processes including growth and maturation, cell respiration, total energy expenditure and the turnover of essentially all substrates. T4 is a narrow therapeutic index drug such that doses only about 20-25% outside the normal therapeutic window can put patients at risk of severe side effects of hyper or hypothyroidism. Levothyroxine is a known example of classic bioequivalence problem between various available products. Dissolution of a drug is a crucial step in its oral absorption and …

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Subseafloor Sulfate Reduction: Investigation Of An Unrecognized Pathway And Quantification Of Low Rates, Heather Nicole Schrum Jan 2009

Subseafloor Sulfate Reduction: Investigation Of An Unrecognized Pathway And Quantification Of Low Rates, Heather Nicole Schrum

Open Access Dissertations

Bacterially-catalyzed sulfate reduction is the dominant respiratory pathway in much of the deep subseafloor sediment, where it yields energy for a significant fraction of the Earth's total biomass. Sulfate reduction impacts the ecology of the deep biosphere, the biogeochemistry of sediment pore water and the global marine sulfur and carbon cycles. Chemical concentration profiles, thermodynamics, and sulfate isotopic compositions are a few of the methods used to determine the presence of sulfate reduction, its biochemical mechanisms, and the rates at which it occurs. By employing these methods we show that a previously unrecognized sulfate reduction pathway is likely to occur …

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Exploring Some Inattended Affective Factors In Performing Nonroutine Mathematical Tasks, John D. Butler Jan 2009

Exploring Some Inattended Affective Factors In Performing Nonroutine Mathematical Tasks, John D. Butler

Open Access Dissertations

The purpose of this study was to describe students' attempts to solve nonroutine math problems and to explore possible correlates of their performance. The focus of this study was on inattended (i.e., intentionally avoided) dimensions that have been underrepresented in the literature, including attitudes, interests, values, aesthetics, metacognition, and representation. Both objective and subjective data--drawn from 13 separate sources--using quantitative and qualitative procedures, were analyzed. Fine-grained rubrics were developed and used to score student work on six nonroutine math problems. These objective data were complemented with students' written "logs" of their work in real time, followed by semi-structured debriefing interviews …

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Polyaniline As Stationary Phase For Hplc, Gang Li Jan 2009

Polyaniline As Stationary Phase For Hplc, Gang Li

Open Access Dissertations

This dissertation consists of two manuscripts. The first manuscript concerns the study of polyaniline as a stationary phase for high performance liquid chromatography and the elucidation of the mechanism for chemical separation in these chromatographic columns. The second manuscript is an analysis of the reproducibility and reliability of the experimental data. The objective is to prove that dispersion forces in polyaniline stationary phase are the dominant, non-Coulombic interactions that determine the order of the retention time of the analytes. In the first manuscript we compared the chromatograms of a pair of anionic analytes eluded in a polyaniline stationary phase and …

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A New Look At Some Old Animals, Neil W. Blackstone Jan 2009

A New Look At Some Old Animals, Neil W. Blackstone

Faculty Articles, Papers, and Other Scholarship

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Association Of Drg1 And Drg2 With Ribosomes From Pea, Arabidopsis And Yeast, Joel P. Stafstrom, B.J. Nelson, K.J. Maas, J.L.M. Dekeyser Jan 2009

Association Of Drg1 And Drg2 With Ribosomes From Pea, Arabidopsis And Yeast, Joel P. Stafstrom, B.J. Nelson, K.J. Maas, J.L.M. Dekeyser

Faculty Articles, Papers, and Other Scholarship

DRGs are highly conserved GTP binding proteins.All eukaryotes examined contain DRG1 and DRG2 orthologs. The first experimental evidence for GTP binding by a plant DRG1 protein and by DRG2 from any organism is presented. DRG1 antibodies recognized a single ~43-kDa band in plant tissues, whereas DRG2 antibodies recognized ~45-,43-,and 30-kDa bands.An in vitro transcription and translation assay suggested that the 45-kDa band represents full-length DRG2 and that the smaller bands are specific proteolytic products. Homogenates from pea roots and root apices were used to produce fractions enriched in cytosolic and microsomal monosomes and polysomes. DRG1 and the 45- and 43-kDa …

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Effects Of R-Alpha Lipoic Acid On Hba1c, Lipids And Blood Pressure In Type-2 Diabetics: A Preliminary Study, Judith Lukaszuk, Aimee Prawitz, Theresa M. Schultz, Elisa Hoffman Jan 2009

Effects Of R-Alpha Lipoic Acid On Hba1c, Lipids And Blood Pressure In Type-2 Diabetics: A Preliminary Study, Judith Lukaszuk, Aimee Prawitz, Theresa M. Schultz, Elisa Hoffman

Faculty Articles, Papers, and Other Scholarship

R-alpha lipoic acid (R-ALA) supplementation improves blood glucose in diabetic animals, but there have been no long-term clinical trials in humans testing its use for glucose control (HbA1c). This double-blind study pre-/post-test control group (PL) design sought to determine the effect of R-ALA on HbA1c. Twenty type-2 diabetics were randomly assigned to 200 mg capsules of R-ALA (n=13; 8M 5F) or PL (n=7; 2M 5F) 3 times daily, 30 minutes before meals (600 mg total) for 91 days. Samples were obtained for HbA1c at baseline and day 91. No significant differences between R-ALA and PL groups were found at baseline …

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From Sputnik To Minerva: Education And American National Security, Sean Kay Jan 2009

From Sputnik To Minerva: Education And American National Security, Sean Kay

Defense Horizons

This paper examines how external challenges have prompted national investments in education to enhance American national security. Rather than focusing primarily on traditional professional military education, this analysis examines how education has been used as a tool of American power. Four major moments of transformation in the international system are surveyed to illustrate a link between strategic educational capacity, defined as the application of attained knowledge and skills, and national power. The study then assesses how education is used as a power asset in the contemporary security environment. Today, an important educational capacity is emerging in the new Minerva program …

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Validity And Problem-Based Learning Research: A Review Of Instruments Used To Assess Intended Learning Outcomes, Brian Robert Belland, Brian F. French, Peggy A. Ertmer Jan 2009

Validity And Problem-Based Learning Research: A Review Of Instruments Used To Assess Intended Learning Outcomes, Brian Robert Belland, Brian F. French, Peggy A. Ertmer

Instructional Technology and Learning Sciences Faculty Publications

Problem-based learning (PBL) spread from the medical school to other university and K-12 contexts due, in part, to the stated promise that PBL produces the target outcomes of deep content learning, increased problem-solving ability, and increased self-directed learning (Hmelo-Silver, 2004). However, research results have been unclear. This paper examines how the three target outcomes of PBL were measured in 33 empirical studies. Results indicate that few studies included 1) theoretical frameworks for the assessed variables and constructs, 2) rationales for how chosen assessments matched the constructs measured, or 3) other information required for readers to assess the validity of authors’ …

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Liquid Chromatography-Tandem Mass Spectrometry For The Determination Of Methylprednisolone In Rat Plasma And Liver After Intravenous Administration Of Its Liver-Targeted Dextran Prodrug, Shuang-Qing Zhang, Helen R. Thorsheim, Suman Penugonda, Venkateswaran C. Pillai, Quentin R. Smith, Reza Mehvar Jan 2009

Liquid Chromatography-Tandem Mass Spectrometry For The Determination Of Methylprednisolone In Rat Plasma And Liver After Intravenous Administration Of Its Liver-Targeted Dextran Prodrug, Shuang-Qing Zhang, Helen R. Thorsheim, Suman Penugonda, Venkateswaran C. Pillai, Quentin R. Smith, Reza Mehvar

Pharmacy Faculty Articles and Research

A specific and sensitive liquid chromatography (LC)-tandem mass spectrometric method for quantitative determination of methylprednisolone (MP) in rat plasma and liver was developed and validated using triamcinolone acetonide as an internal standard. Liquid-liquid extraction using tert-butyl methyl ether was used to extract the drug and the internal standard from plasma and liver. The separation of MP was performed on a C(18) column with a mobile phase of acetonitrile:0.5% formic acid aqueous solution (85:15, v/v) over 4 min. The assay was based on the selected reaction monitoring transitions at m/z 375 -> 161 for MP in plasma, 375 -> 357 for …

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What Do Students Gain From A Week At Science Camp? Youth Perceptions And The Design Of An Immersive Research-Oriented Astronomy Camp, Deborah A. Fields Jan 2009

What Do Students Gain From A Week At Science Camp? Youth Perceptions And The Design Of An Immersive Research-Oriented Astronomy Camp, Deborah A. Fields

Instructional Technology and Learning Sciences Faculty Publications

This study explored American high school students’ perceptions of the benefits of a summer astronomy camp, emphasizing a full cycle of the research process and how the organization of the camp contributed to those perceptions. Semi-structured interviews with students and staff were used to elicit the specific benefits that campers perceived from their experiences and examine them in relation to the stated goals and strategies of camp staff. Among the perceived benefits that students described were peer relationships, personal autonomy, positive relationships with staff, and deepened science knowledge. These perceived benefits appear to influence the kinds of identities students constructed …

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Nonpoint Source Pollution, Lu Lin, Zhi Qiang Deng, Daniel Dianchen Gang Jan 2009

Nonpoint Source Pollution, Lu Lin, Zhi Qiang Deng, Daniel Dianchen Gang

Faculty Publications

A critical review of the peer-reviewed literature published in 2008 on topics related to nonpoint source pollution (NPS) is presented. This review is divided into three sections: sources of NPS pollution, modeling of NPS pollution, and NPS control strategies. Copyright © 2009 Water Environment Federation.

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Bisexuals Need Not Apply: A Comparative Appraisal Of Refugee Law And Policy In Canada, The United States, And Australia, Sean Rehaag Jan 2009

Bisexuals Need Not Apply: A Comparative Appraisal Of Refugee Law And Policy In Canada, The United States, And Australia, Sean Rehaag

Articles & Book Chapters

This paper offers an analysis of refugee claims on grounds of bisexuality. After discussing the grounds on which sexual minorities may qualify for refugee status under international refugee law, the paper empirically assesses the success rates of bisexual refugee claimants in three major host states: Canada, the United States, and Australia. It concludes that bisexuals are significantly less successful than other sexual minority groups in obtaining refugee status in those countries. Through an examination of selected published decisions involving bisexual refugee claimants, the author identifies two main areas for concern that may partly account for the difficulties that bisexual refugee …

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Method Against Method: Swarm And Interdisciplinary Research Methodology, Dylan E. Wittkower Jan 2009

Method Against Method: Swarm And Interdisciplinary Research Methodology, Dylan E. Wittkower

Philosophy Faculty Publications

Part of a special issue on “swarm methodology,” this paper, written by a swarm participant, reflects upon the purpose and value of this kind of interdisciplinary research methodology. First, by way of a recognition of the interdisciplinary status of this paper itself, the question of what we hope to accomplish when we engage in conversations across disciplinary boundaries is broached. Second, a discussion of the practice of peer-review provides an approximate view of one paradigmatic understanding of how we produce a “conversation” within a given established research methodology. We are then, third, able to consider a number of possible related …

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Understanding How Disease And Environment Combine To Structure Resistance In Estuarine Bivalve Populations, Eileen E. Hofmann, David Bushek, Susan E. Ford, Ximing Guo, Dale Haidvogel, Dennis Hedgecock, John M. Klinck, Coren Milbury, Diego Narvaez, Eric Powell, Yongping Wang, Zhiren Wang, Liusuo Zhang Jan 2009

Understanding How Disease And Environment Combine To Structure Resistance In Estuarine Bivalve Populations, Eileen E. Hofmann, David Bushek, Susan E. Ford, Ximing Guo, Dale Haidvogel, Dennis Hedgecock, John M. Klinck, Coren Milbury, Diego Narvaez, Eric Powell, Yongping Wang, Zhiren Wang, Liusuo Zhang

CCPO Publications

Delaware Bay oyster (Crassostrea virginica) populations are influenced by two lethal parasites that cause Dermo and MSX diseases. As part of the US National Science Foundation Ecology of Infectious Diseases initiative, a program developed for Delaware Bay focuses on understanding how oyster population genetics and population dynamics interact with the environment and these parasites to structure he host populations, and how these interactions might modified by climate change. Laboratory and field studies undertaken during this program include identifying genes related to MSX and Dermo disease resistance, potential regions for refugia and the mechanisms that allow them to exist, …

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Multiple Stable Reference Points In Oyster Populations: Implications For Reference Point-Based Management, Eric N. Powell, John M. Klinck, Kathryn A. Ashton-Alcox, John N. Kraeuter Jan 2009

Multiple Stable Reference Points In Oyster Populations: Implications For Reference Point-Based Management, Eric N. Powell, John M. Klinck, Kathryn A. Ashton-Alcox, John N. Kraeuter

CCPO Publications

In the second of two companion articles, a 54-year time series for the oyster population in the New Jersey waters of Delaware Bay is analyzed to examine how the presence of multiple stable states affects reference-point-based management. Multiple stable states are described by four types of reference points. Type I is the carrying capacity for the stable state: each has associated with it a type-II reference point wherein surplus production reaches a local maximum. Type-II reference points are separated by an intermediate surplus production low (type III). Two stable states establish a type-IV reference point, a point-of-no-return that impedes recovery …

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