Digital Commons Network^™

An Examination Of Students' Perceptions Of The Louisiana Act Mandate On Their Postsecondary Education Decisions, Thelma Carol Purnell

LSU Doctoral Dissertations

In the United States,the American College Test (ACT)is a standardized test that is used primarily as an indicator of college readiness and as a gauge for college admission. The governing bodies for Louisiana’s public schools—The Louisiana Department of Education (LDOE)and the Board of Elementary and Secondary Education (BESE)—made the ACT a requirement—effective spring 2013—for Louisiana’s public high school 11th grade students regardless of their postsecondary intentions. The primary purpose of this study was to ascertain from Louisiana high school seniors’ whether the Louisiana Department of Education’s ACT mandate is perceived as a factor influencing their postsecondary decisions or affecting their …

Investigating The Structure Of The Papain-Inhibitor Complex Using Spr And Nmr, Margaret Sara Thomasson

LSU Doctoral Dissertations

Cysteine proteases (CPs) are enzymes with a nucleophilic thiol in their active sites. Inhibitors of cysteine proteases (ICPs) occur naturally in bacterial pathogens and some protozoa. In parasites, ICPs are often virulence factors, contributing to the formation and survival of amastigotes within host cells. These amastigotes have higher CP activity, therefore making both ICPs and CPs potential drug targets. Despite great genetic variability, ICPs contain highly conserved structural features, including a series of defined loops that play a significant role in binding CPs. Papain, a CP from Carica papaya, complexes with ICP from Leishmania mexicana. Although the individual 3-D structures …

Fabrication And Characterization Of Thiol-Acrylate Based Polymer For Bone Tissue Engineering Application, Anoosha Forghani

LSU Master's Theses

Thiol-acrylate materials have been demonstrated to have therapeutic potential as biocompatible scaffolds for bone tissue regeneration due to their osteoconductivity, biodegradability, and well-suited mechanical properties. This study connects the mechanical properties and stability of thiol-acrylate polymer with cell adhesion and proliferation of human adipose derived stromal cells. The polymer presented in this study, trimethylolpropane ethoxylate triacrylate-co-trimethylolpropane tris (3-mercaptopropionate) (TMPeTA-co-TMPTMP), was synthesized by an amine-catalyzed Michael addition reaction. Physical, mechanical, and chemical characterizations were performed on the polymeric scaffold, followed by preliminary in vitro cytocompatibility tests. Live/dead staining assays showed significant differences in cell adhesion for TMPeTA (692 and 912 MW). …

Dietary Plant Lectins May Be An ‘Unknown Etiology’ In Parkinson’S Disease And Dietary Bioactive Compounds Affect Lifespan And Fat Storage Aspects Of Caenorhabditis Elegans, Mingming Wang

LSU Doctoral Dissertations

Dietary bioactive compounds benefit health while some might induce pathological processes. Parkinson’s disease (PD) is the second most common neurodegenerative disease. Braak and Hawkes hypothesized that the gastrointestinal tract may be a potential site of neuronal invasion by an “unknown pathogen” leading to some Parkinsonism. Neurotoxin botulinum or ricin can trans-synaptically transport in nervous system. Our hypothesis 1: dietary plant lectins might be responsible for the “unknown pathogen” causing PD. Pomegranate juice (PJ) have antioxidant and anti-obesity effects. Our hypothesis 2: PJ increases lifespan in C. elegans and reduces fat storage. Study 1: Post-feeding rhodamine or TRITC tagged dietary lectins …

Quantitative Oil Source-Fingerprinting Techniques And Their Application To Differentiating Crude Oil In Coastal Marsh Sediments, Buffy Marie Meyer

LSU Doctoral Dissertations

Oil source-fingerprinting is an environmental forensics technique that uses analytical chemistry to determine the origin of oil residues in environmental samples by comparison to a known or suspected source oil. Currently, the only standardized method for oil source fingerprinting is a qualitative approach that is very effective in almost every oil spill response situation. However, the need for quantitative oil source-fingerprinting methods to complement the qualitative determinations is extremely desired. The research herein aims to utilize data generated by gas chromatography/mass spectrometry (GC/MS) methodologies to test two different quantitative techniques: diagnostic biomarker ratio analysis and chemometrics. The most common crude …

Tracing The Development Of Willie Stark And Its Place In American Opera, Betsy Marie Uschkrat

LSU Doctoral Dissertations

Highly praised American composer Carlisle Floyd (b. 1925), well known for his musical dramas Susannah (1955) and Of Mice and Men (1970), wrote Willie Stark (1981), commissioned by the Kennedy Center for the Performing Arts and later Houston Grand Opera. Floyd’s libretto and musical score was based upon Robert Penn Warren’s Pulitzer Prize-Winning novel All The King’s Men. Despite the vast amount of publicity it received at the premiere, this opera has only occasionally been performed in the last 35 years. Chapter One discusses Carlisle Floyd’s creation of Willie Stark. Chapter Two discusses the workshop performance of the piece. Chapter …

Application Of The Variational Fracture Model To Hydraulic Fracturing In Poroelastic Media, Chukwudi Chukwudozie

LSU Doctoral Dissertations

Hydraulic fracturing has persisted through the use of simple numerical models to describe fracture geometry and propagation. Field tests provide evidence of interaction and merging of multiple fractures, complex fracture geometry and propagation paths. These complicated behaviors suggest that the simple models are incapable of serving as predictive tools for treatment designs. In addition, other commonly used models are designed without considering poroelastic effects even though a propagating hydraulic fracture induces deformation of the surrounding porous media. A rigorous hydraulic fracturing model capable of reproducing realistic fracture behaviors should couple rock deformation, fracture propagation and fluid flow in the both …

Extracting Physically Realistic Pore Network Features From Xct Data And Investigating The Impact Of Pore Topology On Flow In Porous Media, Godfrey Mills

LSU Doctoral Dissertations

Synchrotron XCT imaging approaches applied in this study provides crucial information on the impact of image voxel resolution on image based simulation results and the characteristic length scales that can be extracted from XCT image data sets. The methods and results in this work provides a holistic approach in generating reliable and representative porous media flow and transport properties via image processing and pore scale simulations through XCT image data sets of porous media. This study also shows how XCT imaging, coupled with pore topological and morphological measures can be utilized in quantifying the differences, and/or similarities between a 2.5D …

Elderly Emergent Readers: A Story To Tell And A Voice To Tell It, Laura Elizabeth Williams

LSU Master's Theses

This project involved a qualitative study with life history interviews of Black elderly men and women enrolled with a non-profit organization that seeks to provide education to adults. There was both an observational component and interviews; the observations, with the researcher acting as moderate participant observer, began in spring 2014 and continued through spring 2016. The interviews were conducted over the summer of 2014. The purpose of this project was to learn how and why the seven participants have been pursuing literacy for the majority of their lives, and how and why reading is important to them. This project began …

Study Of Resistivity And Shear Wave Velocity As A Predictive Tool Of Sediment Type In Levee Foundation Soils, Louisiana Gulf Coast Levee System, Derek Stephen Goff

LSU Master's Theses

Geotechnical sediment type of levee foundation soils may be estimated by using cross-plots of shear-wave velocity and electrical resistivity for Louisiana levees. Best-fit polynomial models for estimating soil type in Japanese levees have been created using cross-plots of shear-wave velocity and electrical resistivity. A similar study or model for flood protection structures in the Mississippi River delta plain or other major river delta does not exist. We make the soil-type estimation model more relevant to the foundation soils in the Louisiana Coastal Zone by identifying silt in addition to sand and clay, and eliminating gravel as a dominant soil type. …

Glue Sticks And Gaffs: Disassembling The Drag Queening Body, Ray Siebenkittel

LSU Master's Theses

Drag queening men, typically gay men who perform femininities for entertainment, use makeup, padding, injections and other tools to change their bodies for performance. I focus on the backstage activities of drag performers in Baton Rouge, Louisiana, rather than conventional observations from the audience, to explore the negotiation, construction and implications of these bodies, both physically and discursively. Through autoethnographic accounts and participating in my own drag performance, I highlight the often unseen, less frequently discussed aspects of drag queening in order to lessen the distance between the efforts of performers and the stage. Drag queening men’s bodies are a …

Retention Of Institutional Memory Via Knowledge Management: Perceptions Regarding The Effectiveness Of Corporate Approaches Applied In Higher Education, Sonya Yvette Marsh

LSU Doctoral Dissertations

Research has shown that private industry has a better grasp on knowledge management concepts and practices than in the higher education arena. Given the internal and external challenges facing colleges and universities, the processes and systems associated with knowledge management could serve as a resource for performance improvement and greater levels of effectiveness and efficiency. This phenomenological study was conducted to determine the perceptions and perspectives of deans regarding the usefulness and value of implementing knowledge management best practices typically employed by organizations in the private sector. Four research questions guided this study: 1) What level of awareness exists of …

Effects Of Landscape Fragmentation On Land Loss, Weijia Cheng

LSU Master's Theses

Coastal Louisiana, the seventh largest delta on earth, is one of the most vulnerable coastal areas in the United States of America (USA) because of its land loss problem. Coastal land loss is usually caused by many complicated factors. With the rapid increase in human activities, more studies on land loss have focused on the anthropogenic elements, but less on the pattern of the landscape. It is expected that the type of spatial arrangement, such as high degree of fragmentation, would affect the degree of land erosion. A quantitative evaluation of coastal landscape fragmentation and its influences on land loss …

Ultrafast And Nonlinear Spectroscopy Of Colloidal Nanomaterials, Tony Eugene Karam

LSU Doctoral Dissertations

In the first part of this dissertation, the adsorption isotherms, resonance coupling, and fluorescence of molecular dyes on the surface of plasmonic nanoparticles are investigates. SHG is also used to investigate the growth of a silver shell on the surface of gold nanoparticles in real time. Additionally, gold-silver-gold core-shell-shell nanoparticles possess extinction peak wavelengths that can be controlled over the visible and near-infrared regions and enhanced photothermal effect. Transient absorption measurements determine that the phonon-phonon scattering lifetime is considerably faster in the core-shell-shell nanoparticles than in the gold nanospheres and gold nanorods, which contributes to the higher photothermal efficiencies. Transient …

Role Of An Adenylyl Cyclase Isoform In Alcohol's Effect On Cyclic Amp Regulated Gene Expression In Mammalian Cells, Rebecca Ann Hill

LSU Doctoral Dissertations

Research suggests that the cyclic AMP (cAMP) signaling pathway including CREB-CRE regulated expression of various genes is implicated in the predisposition to and development of alcoholism in humans. Alcohol also induces changes in inflammatory and immune responses; these changes increase the incidence of pneumonias and other infections, which can negatively affect recovery from infections. Cyclic AMP (cAMP) is known for its immunosuppressive effects and is also required for proper development of the immune system. Previous work in our laboratory has demonstrated that ethanol enhances the activity of adenylyl cyclase (AC) in an isoform-specific manner; type 7 AC (AC7) is most …

The Rule Of Law, John V. Orth

Faculty Publications

No abstract provided.

Reasons For Missing Antiretroviral Therapy: Results From A Multi-Country Study In Tanzania, Uganda, And Zambia, Olivier Koole, Julie A. Denison, Joris Menten, Sharon Tsui, Fred Wabwire-Mangen, Gideon Kwesigabo, Modest Mulenga, Andrew F. Auld, Simon G. Agolory, Ya Diul Mukadi, Eric Van Praag, Kwasi Torpey, Seymour Williams, Jonathan Kaplan, Aaron Zee, David Bangsberg, Robert Colebunders

OHSU-PSU School of Public Health Faculty Publications and Presentations

Objectives To identify the reasons patients miss taking their antiretroviral therapy (ART) and the proportion who miss their ART because of symptoms; and to explore the association between symptoms and incomplete adherence.

Methods Secondary analysis of data collected during a cross-sectional study that examined ART adherence among adults from 18 purposefully selected sites in Tanzania, Uganda, and Zambia. We interviewed 250 systematically selected patients per facility (≥18 years) on reasons for missing ART and symptoms they had experienced (using the HIV Symptom Index). We abstracted clinical data from the patients’ medical, pharmacy, and laboratory records. Incomplete adherence was defined as …

Healthy & Empowered Youth: A Positive Youth Development Program For Native Youth, Stephanie N. Craig Rushing, Nichole L. Hildebrandt, Carol J. Grimes, Amanda J. Roswell, Benjamin C. Christensen, William E. Lambert

OHSU-PSU School of Public Health Faculty Publications and Presentations

Introduction: During 2010–2012, Oregon Health & Science University’s Prevention Research Center, a Northwest Tribe, and the Northwest Portland Area Indian Health Board, collaborated to evaluate the Healthy & Empowered Youth Project, a school- and community-based positive youth development program for American Indian and Alaska Native high school students.

Methods: The Native STAND (Students Together Against Negative Decisions) curriculum was enhanced with hands-on learning activities in media design to engage students in sexual and reproductive health topics covered by the curriculum. Guest speakers, field trips, and extracurricular activities were added to provide academic enrichment, engage students in cultural activities, and offer …

"New Voices": Pentecostal Preachers In North America, 1890–1930, Leah Payne

Faculty Publications - Portland Seminary

From their inception in 1901, Pentecostal preachers were convinced that they were doing and experiencing something entirely new. “A new dispensation is dawning upon us,” claimed one Pentecostal journal in 1908. They spoke of their call to ministry as the “new work” that the Holy Spirit was doing. Even familiar tasks like reading the bible were changed for Pentecostal practitioners. “The Bible becomes a new book,” wrote Azusa Street Revivalists in 1907, “to those baptized with the Holy Ghost.” Pentecostal preaching was no different. “Many have received the gift of singing as well as speaking in the inspiration of the …

Shakespeare And The Cultural Olympiad: Contesting Gender And The British Nation In The Bbc’S Hollow Crown, L Monique Pittman

Faculty Publications

As part of the 2012 Cultural Olympiad celebrating both the Queen's Diamond Jubilee and the London Olympics, the BBC launched a season of programs, entitled Shakespeare Unlocked, most notably presenting the plays of the second tetralogy in four feature-length adaptations released under the unifying title The Hollow Crown. These plays so obviously engaged with the question of English nationalism suited a year in which the United Kingdom wrestled with British identity in a post-colonial and post-Great Recession world. Through its adaptative and filmic vocabularies, however, The Hollow Crown advances a British nationalism unresponsive to the casualties — often women and …

The Relationship Between Successful Completion And Sequential Movement In Self-Paced Distance Courses, Janine M. Lim

Faculty Publications

A course design question for self-paced courses includes whether or not technological measures should be used in course design to force students to follow the sequence intended by the course author. This study examined learner behavior to understand whether the sequence of student assignment submissions in a self-paced distance course is related to successful completion of the course. The study included 543 students in 89 different general education courses at a private university in the United States during a two year period. Results indicate that students who completed at least one assignment or exam out of the intended sequence of …

Persuasive Strategies In A Chauvinistic Religious Discourse: The Case Of Women's Ordination, Eun-Young Julia Kim

Faculty Publications

Currently one of the most divisive issues in some Christian communities centers on women’s ordination. This study critically analyzes a religious discourse which defends and justifies the Southern Baptist Convention’s opposition to women’s ordination by using a sociocognitive approach as an underlying theoretical framework. The analysis aims to illustrate how a religious text both assumes and tries to formulate unified mental models to control the beliefs of the audience and promulgate dominance by assigning sovereign values to certain interpretations so that readers will understand certain texts as they see them. In doing so, the current study also hopes to demonstrate …

A Christian Perspective On Watching Secular Tv Programming, S. Joseph Kidder, David K. Penno

Faculty Publications

This article is designed to help parents educate their children how to manage the viewing of television (TV) programming from a Christian perspective. We will address the viewing of TV programming through the various media available today. Although people use the traditional TV set less, research indicates that they watch more programming via a variety of sources (TV sets, iPads, internet, etc.). The principles addressed in this article also apply to movies in the theater, videos on YouTube, and other visual media.

Sex, Drugs And Alcohol: What Adventist College Students Say About The Role Of Parents And Religion, Alina M. Baltazar, Duane C. Mcbride, Curtis J. Vanderwaal, Kathryn Conopio

Faculty Publications

Relationships with peers, parents, and God make a difference in the behavior choices of youth. If a young person spends time with peers who don’t use substances and are planning to wait until they get married to have sex, they are less likely to engage in these behaviors. In addition, if the youth has a close relationship with parents who clearly state their standards regarding substance use and premarital sex, they are less likely to practice these behaviors. Finally, when the young person has a close relationship with God, they are more likely to care about the religious standards such …

6 Reasons To Relax About Portland's Recent Sell-Offs, Thomas Kerr

Metroscape

Are you feeling nostalgic for Oregon-born companies like Dave's Killer Bread, Little Big Burger, and Precision Castparts? Thomas Kerr asserts that we need not fear the recent rash of acquisitions. New owners often bring fresh ideas and capital to the table while maintaining the characteristics we've come to love about our locally owned companies.

Curriculum Change 2016-2017, Portland State University

Bulletin & Curriculum Change Documents

No abstract provided.

Cytokinin Acts Through The Auxin Influx Carrier Aux1 To Regulate Cell Elongation In The Root, Ian H. Street, Dennis Matthews, Maria Yamburkenko, Ali Sorooshzadeh

Dartmouth Scholarship

Hormonal interactions are crucial for plant development. In Arabidopsis, cytokinins inhibit root growth through effects on cell proliferation and cell elongation. Here, we define key mechanistic elements in a regulatory network by which cytokinin inhibits root cell elongation in concert with the hormones auxin and ethylene. The auxin importer AUX1 functions as a positive regulator of cytokinin responses in the root; mutation of AUX1 specifically affects the ability of cytokinin to inhibit cell elongation but not cell proliferation. AUX1 is required for cytokinin-dependent changes of auxin activity in the lateral root cap associated with the control of cell elongation. Cytokinin …

The Influence Of Enrollment In Career And Technical Education Courses On The Achievement Of High School Special Education Students, Melinda Simoneaux Partin

LSU Doctoral Dissertations

This dissertation joins a conversation in the special education arena about the academic and vocational agenda for special education high school students. It explores the influence of enrollment in Career Technical Education (CTE) courses on the achievement of high school special education (SPED) students. The purpose of this study was to compare the achievement of special education (SPED) students enrolled in Career Technical Education (CTE) courses with special education (SPED) students who were not enrolled in Career Technical Education (CTE) courses. The study was designed to determine whether or not SPED students enrolled in CTE improved on the academic scores …

Framing The Ebola Outbreak: Systemic Influences On News Coverage, Adaobi Vivian Duru

LSU Doctoral Dissertations

ABSTRACT Using a media systems comparative framework, I investigated the relationship between systemic characteristics and news coverage of international events. Leveraging a highly salient event: the Ebola outbreak, I extended the Hallin and Mancini Model to non-western democracies. This dissertation explored differences in media coverage of Ebola across media systems. Findings revealed that characteristics of media systems inform how news about an event is framed by reporters. By investigating news influences, this dissertation broadly sheds light on the latent influences of politics and culture on what audiences receive as news. My results showed that liberal media systems such as those …

Reconciling The Premium Tax Credit: Painful Complications For Lower And Middle-Income Taxpayers, Francine J. Lipman, James E. Williamson

Scholarly Works

The Patient Protection and Affordable Care Act (ACA) makes available to certain middle and lower-income individuals a refundable tax credit, the Premium Tax Credit (PTC), designed to help them pay the premiums on their qualified health care plans. To achieve Congress’s goal of making health insurance affordable, the PTC is most often provided directly to an individual’s insurance provider each month in advance of actually claiming the PTC on the individual’s year-end annual tax return. Of the almost twelve million individuals who have enrolled in health insurance through the federal and state health exchanges in 2015, 85% of these individuals …