Digital Commons Network^™

Emergence Of Algal Blooms: The Effects Of Short-Term Variability In Water Quality On Phytoplankton Abundance, Diversity, And Community Composition In A Tidal Estuary, Todd A. Egerton, Ryan E. Morse, Harold G. Marshall, Margaret R. Mulholland

OES Faculty Publications

Algal blooms are dynamic phenomena, often attributed to environmental parameters that vary on short timescales (e.g., hours to days). Phytoplankton monitoring programs are largely designed to examine long-term trends and interannual variability. In order to better understand and evaluate the relationships between water quality variables and the genesis of algal blooms, daily samples were collected over a 34 day period in the eutrophic Lafayette River, a tidal tributary within Chesapeake Bay's estuarine complex, during spring 2006. During this period two distinct algal blooms occurred; the first was a cryptomonad bloom and this was followed by a bloom of the mixotrophic …

Neurobiological Mechanisms That Contribute To Stress-Related Cocaine Use, John R. Mantsch, Oliver Vranjkovic, Robert C. Twining, Paul J. Gasser, Jayme R. Mcreynolds, Jordan M. Blacktop

Biomedical Sciences Faculty Research and Publications

The ability of stressful life events to trigger drug use is particularly problematic for the management of cocaine addiction due to the unpredictable and often uncontrollable nature of stress. For this reason, understanding the neurobiological processes that contribute to stress-related drug use is important for the development of new and more effective treatment strategies aimed at minimizing the role of stress in the addiction cycle. In this review we discuss the neurocircuitry that has been implicated in stress-induced drug use with an emphasis on corticotropin releasing factor actions in the ventral tegmental area (VTA) and an important pathway from the …

Building Interfaith Bridges: Dirce And Nohad Toulan's Contribution To Interfaith Dialogue, Mark Rosenbaum

Metroscape

In early January, 2014, the Institute of Portland Metropolitan Studies brought together key leaders of Portland's faith community to remember Nohad and Dirce Toulan's contribution to interfaith dialogue. A conversation with Rabbi Daniel Isaak, Sister Mollie Reavis, and Imam Mikal Shabazz, moderated by Mark Rosenbaum.

Nohad Toulan: The University In The City, Carl Abbott

Metroscape

A commentary on the life and significance of Nohad Toulan, founder of Portland State University's College of Urban and Public Affairs, by Professor Emeritus Carl Abbott.

Regional Connections, Sheila A. Martin, Jeremy Young

Metroscape

This atlas provides evidence that the metropolitan region is indeed connected as people travel through the region to live and work. We provide two sets of maps that speak to the region’s connectedness through the movement of people. The first set of maps demonstrates how people move about the region on a daily basis to work; the second set shows how people move into and about the region as they change their place of residence.

Part 2: http://archives.pdx.edu/ds/psu/13318

Dispersive And Dissipative Errors In The Dpg Method With Scaled Norms For Helmholtz Equation, Jay Gopalakrishnan, Ignacio Muga, Nicole Olivares

Mathematics and Statistics Faculty Publications and Presentations

This paper studies the discontinuous Petrov--Galerkin (DPG) method, where the test space is normed by a modified graph norm. The modification scales one of the terms in the graph norm by an arbitrary positive scaling parameter. The main finding is that as the parameter approaches zero, better results are obtained, under some circumstances, when the method is applied to the Helmholtz equation. The main tool used is a dispersion analysis on the multiple interacting stencils that form the DPG method. The analysis shows that the discrete wavenumbers of the method are complex, explaining the numerically observed artificial dissipation in the …

British Cultural Narrative In Winston Churchill's Political Communication, Andres L. Faza

USF Tampa Graduate Theses and Dissertations

This study uses Winston Churchill's "We Shall Fight on the Beaches" speech, delivered to the House of Commons following the evacuation of Dunkirk, France in June 1940, as a source text by which to examine Churchill's use of British cultural narratives in political communication. Narrative and heuristic theories are proposed as means by which listeners process such messages. A number of rhetorical devices are defined, in order to inform a discussion of the narratives identified, particularly the means by which those narratives were rhetorically embedded in the text. After a careful examination of the source text, the narratives of knighthood …

Theoretical And Experimental Investigations To Improve The Performance Of Surface Acoustic Wave (Saw) Biosensors, Mandek Richardson

USF Tampa Graduate Theses and Dissertations

The objective of this dissertation is to improve the performance of surface acoustic wave (SAW) biosensors for use in point-of-care-testing (POCT) applications. SAW biosensors have the ability to perform fast, accurate detection of an analyte in real time without the use of labels. However, the technology suffers from the inability to differentiate between specific and non-specific binding. Due to this limitation, direct testing of bodily fluids using SAW sensors to accurately determine an analyte's concentration is difficult. In addition, these sensors are challenged by the need to detect small concentrations of a biomarker that are typically required to give a …

(Dis)Abled Gaming: An Autoethnographic Analysis Of Decreasing Accessibility For Disabled Gamers, Kyle David Romano

USF Tampa Graduate Theses and Dissertations

Within the context of culture, disability has long existed as a stigmatizing quality (Goffman, 1963). As a result, people with disabilities are often overlooked or completely omitted from various, cultural artifacts. This exclusion of people with disabilities is largely recognized as unproblematic because their disabilities imply an inevitable failing. Through my own experiences as a disabled gamer, I have recognized that video games have also framed gamers with disabilities as problematic. Video games are largely constructed in a one-size-fits-all mentality (Grammenos, 2014), where very specific people, with very specific kinds of bodies, are granted access to play them. Since disabled …

The Syrian Civil War: Four Concentric Forces Of Tensions, Majid Rafizadeh

USF Tampa Graduate Theses and Dissertations

The ongoing Syrian conflict has been subject to considerable amount of political polemics. Nevertheless, little scholarly work has been conducted in order to comprehend the complexities as well as underlying reasons behind the intensity, scope, and duration of the conflict in Syria. Through qualitative methodology, this research examines the character of the Syrian conflict, by conducting an in-depth and nuanced case study of the Syrian civil war. While some theories of intrastate conflict and civil wars, concentrate on the domestic character of internal conflicts within states, transnational theories focus on external factors in examining intrastate conflicts. Both theoretical framework fail …

Synthetic Triterpenoids Can Protect Against Toxicity Without Reducing The Efficacy Of Treatment With Carboplatin And Paclitaxel In Experimental Lung Cancer, Karen T. Liby

Dartmouth Scholarship

Synthetic oleanane triterpenoids are multifunctional drugs being developed for the prevention and treatment of a variety of chronic diseases driven by inflammation and oxidative stress. Low nanomolar concentrations of triterpenoids inhibit the induction of inflammatory cytokines, and these drugs are potent activators of the Nrf2 cytoprotective pathway. In contrast, low micromolar concentrations of triterpenoids increased the production of ROS and induced apoptosis in a dose-dependent manner in malignant MCF10 CA1a breast cancer cells. Because cancer cells respond differently to ROS than normal cells, it should be possible to exploit these differences therapeutically. In an experimental model of lung cancer, the …

Premature Birth As A Factor In Autism Spectrum Disorder, Rachel Lichtenstein Goldin

LSU Master's Theses

Autism Spectrum Disorder (ASD) is characterized by pervasive delays in socialization, communication, and repetitive behaviors and restricted interests. While there is a growing body of evidence on the etiology of ASD, there are a limited number of studies examining factors which may impact the differentiation of ASD compared to other developmental disabilities. Additionally, few studies have examined factors which may predict level of ASD symptom severity. The primary aim of this study was to investigate whether premature birth occurs more commonly in infants and toddlers (17-37 months) with ASD than those with atypical development. A secondary aim of this study …

Audio-Based Visualization Of Expressive Body Movements In Music Performance: An Evaluation Of Methodology In Three Electroacoustic Compositions, Yeamin Oh

LSU Doctoral Dissertations

An increase in collaboration amongst visual artists, performance artists, musicians, and programmers has given rise to the exploration of multimedia performance arts. A methodology for audio-based visualization has been created that integrates the information of sound with the visualization of physical expressions, with the goal of magnifying the expressiveness of the performance. The emphasis is placed on exalting the music by using the audio to affect and enhance the video processing, while the video does not affect the audio at all. In this sense the music is considered to be autonomous of the video. The audio-based visualization can provide the …

Incompetent But Deportable: The Case For A Right To Mental Competence In Removal Proceedings, Fatma E. Marouf

Scholarly Works

Important strides are currently being made toward increasing procedural due process protections for noncitizens with serious mental disabilities in removal proceedings, such as providing them with competency hearings and appointed counsel. This Article goes even further, arguing that courts should recognize a substantive due process right to competence in removal proceedings, which would prevent those found mentally incompetent from being deported. Recognizing a right to competence in a quasi-criminal proceeding such as removal would not be unprecedented, as most states already recognize this right in juvenile adjudication proceedings. The Article demonstrates that the same reasons underlying the prohibition against trial …

Travel Time Reliability And Level Of Service, Marlene Beverley Russell

LSU Master's Theses

Travel time reliability (TTR) is familiar to travelers, and its indices are useful measures of the quality of a freeway’s service. Technical groups such as highway agencies are more familiar with a freeway’s level of service (LOS), but the LOS does not capture the variability in travel time. Similar to Pu (2011) this thesis introduces a modified buffer index (BI) incorporating a median rather than average travel time as a new travel time reliability measure. Current research by the SHRP 2 L08 Project Team defines freeway reliability LOS by determining equivalent travel time index for similar travel speed ranges shown …

What Jurors Want To Know: Motivating Juror Cognition To Increase Legal Knowledge & Improve Decisionmaking, Sara Gordon

Scholarly Works

What do jurors want to know? Jury research tells us that jurors want to understand the information they hear in a trial so they can reach the correct decision. But like all people, jurors who are asked to analyze information in a trial—even jurors who consciously want to reach a fair and accurate verdict—are unconsciously influenced by their internal goals and motivations. Some of these motives are specific to individual jurors; for instance, a potential juror with a financial interest in a case would be excluded from the jury pool. But other motivations, like the motive to understand the law …

Effect Of Process Mixing On The Size Distribution And Mean Diameter Of The Thiol-Triacrylate Microcapsules, Rubaiyet Abedin

LSU Master's Theses

An important limitation in the development of the microparticles is the difficulty to develop a precise size distribution. Microparticles have a wide spread applicability in different fields including medical, pharmaceutical, textile, cosmetics, pesticide, printing industry, etc. The large and growing impact of microencapsulation in different fields of technology has made this process important. Microparticle size is a primary determinant of control release mechanism and the reaction kinetics and also impacts the allowable routes of administration, The main objective of this research work is to evaluate the effect of the process mixing on the size and size distribution of the trithiol-triacrylate …

Making The World In Atlanta's Image: The Student Nonviolent Coordinating Committee, Morris Abram, And The Legislative History Of The United Nations Race Convention, H. Timothy Lovelace

Articles by Maurer Faculty

No abstract provided.

Programming Generalization : The Use Of Sufficient Exemplars Within A Discrete Trial Training Early Intervention Program For Children With Autism Spectrum Disorder, Carolyn Barahona

LSU Doctoral Dissertations

Discrete Trial Training (DTT), a skill acquisition paradigm using Applied Behavioral Analysis (ABA) principles, is an empirically validated early intervention method for children with ASD. However, one disadvantage of this treatment is its highly structured method that hinders generalization. Since generalization is essential for independence and overall functioning in children with ASD, programming for generalized behavior change is an important treatment component. Training sufficient exemplars is one generalization programming technique that has led to the transfer of skills across several stimulus contexts. Very few scientific investigations have evaluated the use of sufficient exemplars within a DTT format. Experiment 1 evaluated …

The Contribution Of Fly Ash Components To Pcdd/F Formation, Phillip M. Potter

LSU Doctoral Dissertations

Chlorinated aromatics undergo surface-mediated reactions with metal oxides to form environmentally persistent free radicals (EPFRs) which can further react to produce polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). Previous work using laboratory-made fly ash surrogates composed of transition metal oxides deposited on silica powder has confirmed their ability to mimic fly ash in the production of PCDD/Fs. However, little is known about the propensity of alumina and aluminosilicates to form PCDD/Fs. Cooperative catalysis between transition metals in the formation of PCDD/Fs has also seen little research. A fly ash sample containing both alumina and mullite, an aluminosilicate, was tested for PCDD/F formation …

Alumni Services: Strategies For Keeping The Law Library's Doors Open After Graduation, Michelle M. Trumbo

Articles by Maurer Faculty

No abstract provided.

The Contribution Of Comorbid Symptomology To The Social Skill Deficits In Infants And Toddlers With Autism Spectrum Disorder, Paige Elizabeth Cervantes

LSU Master's Theses

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social communication and the presence of restricted and repetitive patterns of behavior or interests. The onset of ASD symptomology occurs prior to 30 months of age; however, typical diagnosis is made at 3 to 4 years old. Early identification of ASD is imperative for more effective treatment and a bettered prognosis. The evaluation and treatment of ASD is complicated by high rates of comorbid psychopathology. When an individual presents with ASD and a co-occurring disorder, symptoms may manifest differently. Utilizing the Baby and Infant Screen for Children with …

Health Policy And The Syrian Chemical Weapons Crisis, David P. Fidler

Articles by Maurer Faculty

For health policy, armed conflicts constitute one of the most severe emergency contexts in which health, well-being, and determinants of health are threatened. The Syrian civil war has proved no different, as health experts re­peatedly lament the humanitarian debacle the Syrian conflict has become. The main distinguishing feature of the Syrian civil war has been the large-scale use of chemical weapons in August 2013. This essay analyzes the chemical weapons crisis and its diplomatic resolution from a health policy perspective, with particular attention on whether the handling of this crisis created positive health policy “spillover” opportunities for more effectively addressing …

Advanced And Novel Modeling Techniques For Simulation, Optimization And Monitoring Chemical Engineering Tasks With Refinery And Petrochemical Unit Applications, Gregory M. Robertson

LSU Doctoral Dissertations

Engineers predict, optimize, and monitor processes to improve safety and profitability. Models automate these tasks and determine precise solutions. This research studies and applies advanced and novel modeling techniques to automate and aid engineering decision-making. Advancements in computational ability have improved modeling software’s ability to mimic industrial problems. Simulations are increasingly used to explore new operating regimes and design new processes. In this work, we present a methodology for creating structured mathematical models, useful tips to simplify models, and a novel repair method to improve convergence by populating quality initial conditions for the simulation’s solver. A crude oil refinery application …

Using Brand Concept Maps To Examine The Extension Of Ford And Jeep Brands, Yao Wei

LSU Master's Theses

The intense competition in marketing today has led to excessive financial risks when a new brand enters the market. To avoid the extremely high costs and difficulties associated with this process, many firms choose to take advantage of established brands to launch new product lines or categories. The purpose of this study was to explore the evaluation of brand extension in fashion using brand concept mapping (BCM). Specifically, the first objective was to identify consumers’ associations with Ford and Jeep apparel using BCM, while the second objective was to categorize those associations using Korchia’s (1999) brand association categories to compare …

The Transition From Clinical Practice To Academic Citizenship In Nursing Faculty, Valerie S. Schluter

LSU Doctoral Dissertations

The purpose of this phenomenological study was to explore the experience of female registered nurses who transitioned from clinical practice to a faculty role in a baccalaureate program of nursing as experienced by the study participants. An improved understanding of the experience of registered nurses who transition from clinical practice to academic citizenship in an academic community will fill a gap in the literature and assist administrators of schools of nursing in planning faculty orientation and development programs to facilitate a successful transition of new nursing faculty members into academic citizenship in an academic community. Most nursing faculty members begin …

Characterization Of A Σ54-Dependent Response Regulator, Tepr, In The Rice-Pathogenic Bacterium Burkholderia Glumae And Development Of Biocontrol Strategies For Bacterial Panicle Blight Of Rice, Surendra Osti

LSU Master's Theses

Bacterial panicle blight, caused by Burkholderia glumae, is a major bacterial disease of rice in Louisiana. This bacterium contains several virulence factors required for disease development such as toxoflavin, lipase and flagella. In a genome-wide search for regulatory factors related to the virulence of B. glumae, tepR was identified as a negative regulator for toxoflavin production and found to encode a sigma 54-dependent response regulator. TepR is homologous to LuxO, a quorum-sensing signaling component of Vibrio spp. A markerless tepR deletion mutant of B. glumae 336gr-1, LSUPB401, produced more toxoflavin and showed higher lipase and protease activities compared to the …

Citizenship At Work: How The Supreme Court Politically Marginalized Public Employees, Ruben J. Garcia

Scholarly Works

Collective bargaining by public sector employees has been the subject of recent heated debates in the state legislatures of Wisconsin, Michigan, Ohio, and Indiana. The right of public sector employees to freedom of association, collective bargaining, and the right to participate in politics are among the “citizenship rights” of public employees. In many states, however, the citizenship rights of public employees are under threat both in state legislatures and in the courts. Paradoxically, the ability of public sector employees to change legislation has been hampered over the years by Supreme Court decisions, making it more difficult to organize politically by …

An Experimental Investigation Of The Effects Of N-Decane On The Supercritical Pyrolysis Of Toluene, Catherine A. Grubb

LSU Master's Theses

Future and current high-speed jet aircraft will require their fuels to act as the primary coolants as well as propellants. Fuels will be exposed to severe temperatures and pressures in hypersonic aircraft, up to 700°C and 130 atm, respectively, conditions that are supercritical for most pure hydrocarbons. Under supercritical conditions, hydrocarbon fuels undergo pyrolytic reactions, which may lead to the formation of polycyclic aromatic hydrocarbons (PAH), known precursors to carbonaceous solid deposits. Such deposits may clog fuel lines and injection nozzles, hindering safe engine performance. Hence, it is important to understand the reactions that lead to the formation of PAH. …

Buying Time? False Assumptions About Abusive Appeals, Michael Kagan, Fatma Marouf, Rebecca Gill

Scholarly Works

The federal government has expressed fear that immigrants abuse the appellate process to delay their deportations by filing meritless petitions for review with the federal courts. Some courts have responded to these concerns by imposing stricter standards for issuing stays of removal, so that the government can more easily deport petitioners even while their appeals remain pending. The risk with this approach is that immigrants who ultimately prevail may be erroneously deported. What is often overlooked is that the potential for abuse is really a function of time, with longer appeals posing a greater threat to immigration enforcement. This study …