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A Comparison Of Fall-Related Psychological Measures In A Community-Based Setting, Delilah Susanne Moore

LSU Doctoral Dissertations

Falls and the fall-related psychological concerns associated with these events pose a serious public health problem among aging adults. Fall-related psychological instruments can be useful in quantifying important endpoints for fall prevention programs (Jorstad et al., 2005), yet no research currently exists to justify the use of these psychological instruments in a community-based falls risk screening. Therefore, the purpose of this dissertation was to examine the psychometric properties of several fall-related psychological measures in a falls risk screening context by: (a) examining the reliability and validity of the Falls Efficacy Scale-International (FES-I), Activities-specific Balance Confidence (ABC), modified Survey of Activities …

Function Based Interventions Versus Non-Function Based Interventions Within A General Education Setting, Michael J. Vance

LSU Master's Theses

Functional Behavioral Assessment is a multi-method set of strategies used to determine a particular behaviors purpose. This method, currently seen as the gold standard for creating behavioral interventions, has since 1997 been required by law for a number of special education concerns. While there is a great deal of data supporting the use of function based interventions for populations with low incidence disabilities, little has been done to analyze their effectiveness for more typically developing children. Given that functional behavioral assessment can be quite time consuming and requires prior training the purpose of this study is to compare function based …

The Detection Of Malingered Mental Retardation In High- And Low-Cognitive Ability Individuals, Daniel Anthony Proto

LSU Master's Theses

The detection of malingering is an area of research that has received increasing attention in recent decades. Neuropsychologists in particular are often asked to assess the validity of symptoms such as cognitive impairment due to brain injury or toxic chemical exposure. Additionally, given the decision of the U.S. Supreme court in Atkins v. Virginia (2002), incentive to feign mental retardation in order to avoid capital punishment has greatly increased. However, few measures of malingering detection have been thoroughly studied for their applicability to mentally retarded individuals, and for their ability to accurately distinguish between malingerers, normal controls, and individuals with …

Systematically Increasing Contextual Interference Is Beneficial For Learning Novel Motor Skills, Jared Marak Porter

LSU Doctoral Dissertations

Traditionally, contextual interference (CI) has been investigated by the use of extreme low and high levels of CI (blocked and random practice schedules); with results generally suggesting that higher rather than lower amounts of CI facilitated motor skill learning (Magill & Hall, 1990). To better understand the CI effect, two experiments were conducted investigating an alternative form of practice schedule. Practice using this alternative schedule provided novices experiences with systematic increases in CI, which were compared to traditional blocked and random scheduling. Experiment 1 tested the hypothesis that practicing variations of the same tasks with systematic increases in CI would …

Neuroimaging Research Into Disorders Of Consciousness: Moral Imperative Or Ethical And Legal Failure?, Stacey A. Tovino

Scholarly Works

This article explores the ethical and legal implications of enrolling individuals with disorders of consciousness (DOC) in neuroimaging research studies. Many scientists have strongly emphasized the need for additional neuroimaging research into DOC, characterizing the conduct of such studies as morally imperative. On the other hand, institutional review boards charged with approving research protocols, scientific journals deciding whether to publish study results, and federal agencies that disburse grant money have limited the conduct, publication, and funding of consciousness investigations based on ethical and legal concerns. Following a detailed examination of the risks and benefits of neuroimaging research involving individuals with …

The Effect Of Contamination, Sediment Source And Salinity On The Uptake, Distribution, And Excretion Of Metals By Spartina Alterniflora, Sarahfaye Mahon

LSU Doctoral Dissertations

Spartina alterniflora, the dominant vegetation in many salt marshes, has the potential to remobilize metals (Cd, Cr, Cu, Ni, Pb, Zn) from sediment to the local salt marsh environment. My research determined the influence of sediment metal concentration, sediment type and salinity on the uptake, distribution and accumulation of metals by S. alterniflora tissues and excreted salts. Spartina alterniflora was cultivated at a constant salinity in natural and dredge sediments with three levels of metal additions (control, low, and high). The distribution and concentration of metals in S. alterniflora was influenced by both metal treatments and sediment type; however, the …

The Culture Of Conservative Protestantism And Income Inequality: A Multilevel Analysis, Skylar Craig Gremillion

LSU Master's Theses

Despite major advances in equality of rights, women still earn less money than men. Social science researchers see sex-based income inequality as an issue of discrimination. While the problem has been identified, its causes are a matter of debate. In this study I offer one possible influence on this discrimination. I theorize that conservative Protestant culture has a strong effect on local norms and business practices. Those norms are a part of the institutional environment, and manifest themselves as allocative and valuative discrimination, keeping women out of high paying jobs or paying women in high skilled jobs less than men …

Avian Diversification In The Afrotropics, Ben D. Marks

LSU Doctoral Dissertations

Widespread bird species endemic to the lowlands of the Guineo-Congolian rainforest of Africa have traditionally been thought to lack substantial intraspecific structure. This view owes largely to their widespread distributions coupled with the absence of discrete geographic variation in plumage. In the following chapters I examine the phylogeographic patterns of three such species using a combination of molecular and morphometric data. The three species investigated are the Green Hylia (Hylia prasina), the Red-tailed Bristlebill (Bleda syndactylus), and the Yellow-whiskered Greenbul (Andropadus latirostris). Using the phylogeographic patterns from these data, I assess 1) models of rainforest species diversification, 2) current taxonomy, …

Only Skin Deep: The Cost Of Partisan Politics On Minority Diversity Of The Federal Bench: Why Care Whether Judges Look “Like America” If, Because Of Politics, A “Voice Of Color” Has Become A “Whisper Of Color”?, Sylvia R. Lazos

Scholarly Works

This article explores the difficulties encountered in diversifying the federal bench and why the partisanship of the confirmation process decreases the diversity of viewpoints on the bench. Presidents value diversity in nominating judges. While Bill Clinton and George W. Bush had very contrasting political styles and judicial philosophies, the judges appointed by these two presidents now account for almost 80% of the current active federal minority judges. There has been progress in the area of descriptive diversity; currently 18% of the active federal bench is made up of minority judges according to data compiled from the Judicial Center. However, there …

Sulphur Removal Using Regenerable Sorbents Of Rare Earth/Transition Metal Oxides, Vikram Reddy Kalakota

LSU Master's Theses

Hot gas desulfurization of gases from primary gasifier can be accomplished using sorbents composed Zn, calcium and transition metal oxide sorbents. The problem with metal oxide sorbents alone is that they are easily reduced at high temperature above 873 K to metallic state under reducing atmosphere decreasing their desulfurization capacity. Sorbents studied for hot gas desulfurization were based on Ce/La/M (M = transition metal) oxides and Ce/La/RE (RE = a rare earth) oxide. Sorbents were prepared using sol-gel method and the rare earth oxides were doped with transition metals using incipient wetness impregnation. Sulfidation experiments were carried out at 873 …

When Shakespeare Meets Al Gore: Imagine Interactions, Communication Competence, And Immediacy Traditional And Online-Based Distance Education, Tammy L. Croghan

LSU Doctoral Dissertations

The growth of distance education, in its many forms, has had consequences for both online universities as well as more traditional universities. This study examines instructional behaviors and communication strategies used in face-to-face and online educational settings. The purpose of this study is to explore student perceptions of instructor immediacy, motivation, and communicator competence in addition to their own motivation and intrapersonal communication use in higher education settings. This dissertation follows a social scientific organizational pattern: introduction, literature review, methods, results, and discussion. The first two chapters examine the purpose of the study and the appropriate research on distance education, …

Neglecting Parameter Changes In Garch Option Pricing Models And Var, Burak Hurmeydan

LSU Doctoral Dissertations

In GARCH models, neglecting parameter changes in the conditional volatility process results in biased estimation. The estimated sum of the autoregressive parameters of the conditional volatility converges to one. In Chapter 2, I analyze the effect of changes in the parameters of conditional volatility on European call option prices when these parameters are estimated ignoring the change-points. Simulation studies show that ignoring parameter changes in the conditional variance process of GARCH(1,1) models leads to biased estimates of option prices. The bias, measured in percentages, is most pronounced for out-of-the-money options, substantial for at-the-money options, and vanishes as options move deep-in-the-money. …

The Automobile Exception In Nevada: A Critique Of The Harnisch Cases, Thomas B. Mcaffee, John P. Lukens, Thaddeus J. Yurek Iii

Scholarly Works

This Article offers a critique of Nevada's Harnisch cases and calls for the Nevada Supreme Court to reconsider its ruling. The authors begin by examining the historical development of the automobile exception, beginning with Carroll v. United States. There the Supreme Court reasoned that both probable cause and the exigency of the mobility of automobiles justified a search without a warrant. But almost seventy-five years later, in Maryland v. Dyson, the Court clarified its conclusion that the automobile exception has no separate exigency requirement. In turn, the authors will then examine Nevada's application of the automobile exception prior to 1998's …

Claims To Information Qua Information And A Structural Theory Of Section 101, Kevin Emerson Collins

Articles by Maurer Faculty

In this article, I start from the premises that claims to inventive information qua information are not and should not be patentable, and I pursue two lines of inquiry. First, I argue that a structural theory of Section l0l of the Patent Act provides a policy-driven, conceptually coherent and statutorily justified interpretation that explains why claims to inventive information qua information should be excluded from the realm of patentable subject matter. In brief, patentable subject matter must be restricted in this manner to preserve the duality of claiming and disclosing upon which the entire patent regime is constructed.

Second, I …

The Reach Of Literal Claim Scope Into After-Arising Technology: On Thing Construction And The Meaning Of Meaning, Kevin Emerson Collins

Articles by Maurer Faculty

Broadly speaking, courts and commentators have offered two theories to explain the relationship between the literal scope of a patent claim and after-arising technology (AAT), i.e. technology that is not discovered until after a claim has been filed. The fixation theory asserts that claim scope is and/or should be fixed on the date a claim is filed and that this fixation makes it impossible for the claim to encompass AA T because a claim must grow in some sense after the filing date in order to encompass AA T. In stark contrast, the growth theory argues that literal claim scope …

The Effect Of Consistency Of Price Promotion Cues On Retailer Credibility, Product Quality, Value Of A Deal And Purchase Intentions, Igor Makienko

LSU Doctoral Dissertations

Research on price promotions suggests that higher discounts often result in more favorable deal evaluations. However, consumers’ reactions do not always follow a consistently linear path when evaluating the deal. Price promotions offering “too high” or “too low” value may result in adverse deal evaluations. In this dissertation we investigate consumers’ reactions and possible evaluations of price promotions when they are provided information on the two primary price promotion attributes - discount and time restrictions. If the price promotion attributes, acting as cues, are consistent with consumers’ expectations (e.g., a high discount with a short time period, or vice versa), …

Off-Line Maldi Mass Spectrometry Of Bioaerosols, Jae-Kuk Kim

LSU Doctoral Dissertations

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry was used for off-line analysis of bioaerosols. The overall goal of the work is to develop methods and instrumentation to minimize sample treatment and maximize sensitivity and selectivity for bioaerosol analysis. This work is divided into three parts: sample preparation, test bioaerosol analysis, and instrument development. Untreated silicon wafer substrates were used as an alternate to conventional stainless steel targets and proved to be excellent substrates for large molecule analyses as well as small molecule analyses with excellent spot-to-spot and shot-to-shot reproducibility, which is useful for high-throughput and automated sample analysis. MALDI sample preparation …

Pileated Woodpeckers (Dryocopus Pileatus) And Saproxylic Beetles In Partial Cut And Uncut Bottomland Hardwood Forests, Patricia Jean Newell

LSU Master's Theses

Relative abundance and species richness of saproxylic beetles and nesting, roosting, and foraging ecology of pileated woodpeckers were studied in recent partial cuts and uncut forest during the summers of 2006 and 2007. Relative abundance of saproxylic beetles was greater in one-year old cuts than uncut forest during 2006 but was not consistent during 2007. The number of dead trees, period of capture, and trapping year also influenced beetle abundance. Species richness was similar in partial cuts and uncut forest. Characteristics of habitat used by pileated woodpeckers for nesting and roosting in one-year-old and two-year-old partial cuts and uncut forest …

Experimental Study Of A Foam Flow In Horizontal Pipes: Two Flow Regimes And Its Implications, Miodrag Bogdanovic

LSU Master's Theses

Although foam has been widely used in many scientific and engineering applications, the current understanding of foam rheology in pipes is still very limited because of its complex nature. This experimental study, for the first time, investigates the flow rheology of foams in pipes by placing a special emphasis on two distinct foam flow regimes. A wide range of experimental conditions are examined in this study, which include five different surfactant formulations (Cedepal FA-406, Petrostep CG-50, Stepanform 1050, Aquet TD-600, and Ultra-Palmolive), three different surfactant concentrations (0.1, 1, and 5 wt %), two different pipe diameters (0.5 and 1 inch …

The Emerging Importance Of "Social Visibility" In Defining A Particular Social Group And Its Potential Impact On Asylum Claims Related To Sexual Orientation And Gender, Fatma E. Marouf

Scholarly Works

An emerging issue in U.S. asylum claims based on "membership in a particular social group" is the relevance of social visibility in determining whether such a group exists. Of the five protected grounds for asylum, "membership in a particular social group" has always generated the most debate. In 2002, the United Nations High Commissioner for Refugees (UNHCR) issued guidelines that present the "protected characteristic" and "social perception" approaches as alternative ways of establishing a particular social group, instructing States Parties to the 1951 Refugee Convention (the "Convention") to determine first if there is a protected characteristic and, only if no …

Physical Modeling Of Flow And Sediment Transport Using Distorted Scale Modeling, Ryan L. Waldron

LSU Master's Theses

As coastal Louisiana's land loss problem continues to grow unabated, many different solutions have been proposed. One such solution is the concept of diverting fresh water and sediment from the river into the coastal wetlands. Louisiana State University has a Small Scale Physical Model (SSPM) for the study of the potential of such diversions; it is deisgned to study the bulk movement of sediment in the river and diversions. The model is a distorted scale model with a horizontal scale of 1:12,000 and a vertical scale of 1:500; this extreme distortion has brought into question the applicability of the model. …

Development Of An Algorithm For Switching Compensator Control Based On The Currents' Physical Components Theory, Samuel Pearce

LSU Master's Theses

Development of a three-phase switching compensator algorithm, based on the Currents’ Physical Components (CPC) power theory and capable of performing in real time, is the subject of this thesis. The compensator algorithm could be implemented to control a PWM Inverter, which would perform as a shunt switching compensator of harmonic, reactive and unbalanced currents or a customizable combination of the three. The hardware used to demonstrate the ability of the algorithm to perform within the restraints or real time operation is a Motorola DSP56F807 evaluation mode DSP board and a set of voltage and current sensors. The Evaluation Board was …

A Novel Modulatory Role For Nitric Oxide In Retinal Amacrine Cells, Emily Ann Mcmains

LSU Doctoral Dissertations

Nitric oxide is a gaseous signaling molecule that is produced by subsets of each cell type in the vertebrate retina. Though there is evidence that nitric oxide (NO) can affect multiple cellular processes in the retina, much remains unknown, especially with respect to its function in the inner retina. We have used a simplified system of cultured amacrine cells (interneurons that signal in the inner retina) to explore the role of nitric oxide in amacrine cell signaling. We find that physiological concentrations (100’s of nM – low μM) of nitric oxide (NO) transiently invert the sign of voltage responses mediated …

Feasibility Testing For Salsa Neutrino Astrophysics Project, Jarrod Christopher Marsh

LSU Master's Theses

Research is presented that was performed to determine possible locations for a full scale Salt Dome Shower Array (SalSA) neutrino telescope sensitive to energies from TeV ($10^{12}$ eV), PeV ($10^{15}$ eV), and EeV ($10^{18}$ eV) neutrinos. A detector to test possible site locations was designed around a half-Watt Ham radio to transmit short pulses of 145.500 MHz radiation. The research began by designing the system. Several phases of design took place as the system was refined and calibrated. Once finished, it was taken into a field and tested. The objective was to determine how the signals depended on distance. In …

Elements Of Mythmaking In Witness Accounts Of Colonial Piracy, Plamen Ivanov Arnaudov

LSU Doctoral Dissertations

Focusing on historical accounts (1684-1734) by English, French, and Spanish witnesses, this dissertation establishes a continuity in fictionalized representations of anti-heroic pirates from the buccaneering period to the Golden Age of Piracy. Informed by history, literary, myth, and performance theory, the analysis identifies significant distortions in reports by observers and participants. The distortions that pertain to mythmaking patterns are classified and analyzed further. Conflicting and ambivalent representations of the pirate as an anti-hero are resolved through the positing of a literary scapegoat hypothesis drawing from René Girard and Joseph Roach. While demonstrating mythical archetypes at work in the construction of …

The Madden-Julian Oscillation And Tropical Cyclone Frequency Variability, Stephen Caparotta

LSU Master's Theses

Recent years have seen a dramatic increase in monetary losses from hurricanes along the U.S. coastline. The vast majority of the damage resulted from major hurricanes (Category 3-5), with 2005’s Katrina, Rita, and Wilma producing an estimated $60 billion in insured losses alone (Insurance Information Institute, 2008). In light of these record damages, it is crucial to have a better understanding of the atmospheric and oceanic conditions that produce the most powerful hurricanes. Prior research has focused on interseasonal variability in tropical cyclones, but much less attention has been devoted to intraseasonal variability. Maloney and Hartmann (2000a) showed that hurricanes …

An Embarrassment Of Riches: The Enzymology Of Rna Modification, Dirk Iwata-Reuyl

Chemistry Faculty Publications and Presentations

The maturation of transfer RNA (tRNA) involves extensive chemical modification of the constituent nucleosides and results in the introduction of significant chemical diversity to tRNA. Many of the pathways to these modified nucleosides are characterized by chemically complex transformations, some of which are unprecedented in other areas of biology. To illustrate the scope of the field, recent progress in understanding the enzymology leading to the formation of two distinct classes of modified nucleosides, the thiouridines and queuosine, a 7-deazaguanosine, is reviewed. In particular, recent data validating the involvement of several proposed intermediates in the formation of thiouridines are discussed, including …

Transitioning To Organic: Fertility Management In Potato Production, Lacey Theresa Dupreé

LSU Master's Theses

An increasing demand for organic crops in the US represents a considerable opportunity for organic, as well as conventional growers interested in exploring the transition to organic production. Renewed interest in organic farming has resulted in a need for research involving organic fertilizers. Limited research has been conducted on organic vegetable production with previous research conducted primarily outside the Deep South US. Field studies were conducted at the Louisiana State University (LSU) AgCenter Burden Center to investigate the effect of three levels of pre-plant organic NPK fertilizer (8-5-5, Nature Safe) combined with a sidedress application of organic NPK fertilizer (13-0-0, …

Design, Fabrication, And Testing Of A Micro Fuel Injection Swirler For Lean Premixed Combustion In Gas Turbine Engines, Anthony Louis Giglio

LSU Master's Theses

Due to growing energy demands and the need for increased fuel consumption efficiency, environmental protection agencies are imposing more stringent emissions regulations on gas turbine combustion systems with emphasis on NOx emissions reduction. Emerging technological combustion schemes to reduce NOx commonly employ lean premixed combustion. Decreases in NOx are globally obtained by flame temperature decrease and locally improved by homogeneity of the reacting mixture. A new micro fuel injection swirler, capable of providing efficient and rapid mixing over a short distance, is presented in this thesis. The conception of the Micro Fuel Injection Swirler (MFIS) was motivated by the need …

Resistant Starch Is Effective In Lowering Body Fat In A Rat Model Of Human Endocrine Obesity, Julina Ann Robert

LSU Master's Theses

Two studies were performed to determine the effects of resistant starch (RS) on body weight and fat. A 2x2 factorial design was used in both studies, and results were considered significant when p<0.05 for both studies. The first study examined the effects of RS in a high fat diet (44.8% of energy) on weight, fat, peptide-YY (PYY) levels, and cecal pH in male Sprague-Dawley rats. Rats were fed a low fat energy control diet for one week prior to diet treatment. On week two, rats were blocked by weight and fed one of the following diets for 12 weeks (n=10): low fat, energy control (LFEC); LF resistant starch (LFRS); high fat, energy control (HFEC); or high fat resistant starch (HFRS). RS did not lower weight or fat with either the HF or LF diets. RS consumption resulted in greater full and empty cecal weights, and a lower pH for the LFRS diet. This data indicate fermentation, even though weight and fat loss did not occur. This is contrary to previous reports with RS, which has been shown to decrease body fat compared to controls. The second study examined the effects of RS on the weight, fat, PYY levels, and glucagon-like peptide-1 (GLP-1) levels in female Sprague-Dawley rats. Ovariectomized (OVX) rats were used to represent rats prone to gaining weight, and sham rats represented normal rats. Rats were assigned to one of four groups (n=10): OVEC, OVRS, SHEC, or SHRS. Rats were fed the EC diet for 6 weeks prior to diet treatment to gain weight after surgery, and then blocked by weight and fat into diet treatment groups, and spent 13 weeks on treatment diets. Energy intake, total gastrointestinal weight, large intestine/cecum weight, and small intestine weight were all higher in RS fed rats relative to EC fed rats. Mesenteric, ovarian, perirenal, retroperitoneal, and total fat pads were lower in RS rats relative to EC rats. Although RS was not effective in lowering body weight or body fat in the first study, the data indicates that resistant starch may lower body weight and fat in postmenopausal women.