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Hazard Identification, Risk Assessment And Risk Control (Hirarc) In A Steel Foundry., Lee Hooi Nee

Student Works (2010-2019)

Abstract NA

Representing The Rhinoceros: The Royal Society Between Art And Science In The Eighteenth Century, Craig A, Hanson

University Faculty Publications and Creative Works

Discrepancies between the empirical evidence of single-horned rhinoceroses witnessed by Europeans and references from antiquity regarding double-horned rhinos puzzled members of the Royal Society for decades, particularly the circle of physicians around Drs Richard Mead and Hans Sloane. Three articles published in the Philosophical Transactions proposing solutions to the two-horned dilemma and the kinds of evidence onwhich they depended raised crucial issues for the Royal Society during the period - antiquarian concerns tied to philology, numismatics, textual emendation and collecting as well as the conceptual overlap between medical theory and the knowledge of the ancient world generally.

Art And Memory: An Examination Of The Learning Benefits Of Visual-Art Exposure, James Tyler Rosier

College of Graduate Studies: Theses & Dissertations

Past research has indicated that art education can be beneficial to students' education, possibly through beneficial effects related to learning and memory. Although some prior research has explored effects of art education for children, relatively little research has investigated beneficial effects of art in relation to adult learners. The aim of the current study was to explore whether a beneficial relationship exists between art and memory for adults in the context of an experimental study. Participants were randomly assigned to one of four conditions: Engaging in creative art, viewing art, discriminating among visually presented shapes, and writing a description of …

Perelman's Theory Of Argumentation And Natural Law, Francis J. Mootz Iii

McGeorge School of Law Scholarly Articles

No abstract provided.

Artisanal Whaling In The Atlantic: A Comparative Study Of Culture, Conflict, And Conservation In St. Vincent And The Faroe Islands, Russell Fielding

LSU Doctoral Dissertations

Whalers from the Caribbean island of St. Vincent and the North Atlantic archipelago of the Faroe Islands hunt pilot whales and a variety of other small cetaceans for food. Vincentian whalers use harpoons, thrown by hand or fired from a modified shotgun mounted on the boat. Faroese whalers, using several dozen boats, work cooperatively to drive an entire pod of whales ashore, where shore-based whalers are waiting to complete the kill with traditional whaling knives. Vincentian whaling traces its origins to the late nineteenth century. Records of Faroese whaling date to the late sixteenth century but the practice is thought …

The Conserved Deda Family Of E. Coli Membrane Proteins: Genetic And Topological Analysis, Kandi Sheral Thompkins

LSU Doctoral Dissertations

Ludox density gradients were used to enrich for Escherichia coli mutants with conditional growth defects and alterations in membrane composition. A temperature-sensitive mutant named Lud135 was isolated with mutations in two related, nonessential genes: yghB and yqjA. yghB harbors a single missense mutation (G203D) and yqjA contains a nonsense mutation (W92TGA) in Lud135. Both mutations are required for the temperature-sensitive phenotype: targeted deletion of both genes in a wild-type background results in a strain with a similar phenotype and expression of either gene from a plasmid restores growth at elevated temperatures. The mutant has altered membrane phospholipid levels, with elevated …

Signaling Of Integrin Lower Leg And Transmembrane Domains, Wei Wang

LSU Doctoral Dissertations

Integrin conformational changes mediate integrin activation and signaling triggered by intracellular molecules or extracellular ligands. Even though it has been shown that TM and/or cytoplasmic α and β domains associate in the resting state and separation of these domains is required for integrin signaling, it is still not clear how this signal is transmitted from the transmembrane domain through two long extracellular legs to the ligand-binding headpiece. In addition, integrin TM homomeric association was also observed. But the role of this interaction remains elusive. In this work, the platelet integrin, αIIbβ3, has been used to elucidate the roles of integrin …

The Relationship Between Social Skills And Challenging Behaviors In Children With Autism Spectrum Disorders, Jonathan Wilkins

LSU Doctoral Dissertations

The autism spectrum disorders (ASD) are among the most serious and debilitating conditions with onset in early childhood. Deficits in social interaction skills are considered to be the hallmark set of symptoms and are given the most weight in current diagnostic systems. Although not considered among the core symptoms of ASD, challenging behaviors in the form of physical aggression, property destruction, and self-injury also commonly occur. Challenging behaviors of this nature are a salient feature of ASD because of their potential to cause harm to self and others as well as limit a child’s access to opportunities in community and …

The Theoretical Learning Impact Of A Summer Engineering Program Curriculum For Underrepresented Middle School Students, Vaneshette Teshawn Henderson

LSU Doctoral Dissertations

This mixed methods, exploratory and confirmatory study was designed to evaluate the theoretical learning impact of a innovative summer engineering program curriculum would have on its audience, middle school minority students. Several theories were used to develop the innovative curriculum including Human Constructivism, cultural learning styles of African Americans, visual spatial learning and graphic design learning. This study was completed in two phases: evaluation of existing middle school summer engineering program curriculum for best practices and development of innovative curriculum and expert evaluation of the innovative curriculum. Three existing programs from across the country participated in this study. Five engineering …

Retrotransposon-Mediated Genomic Dynamism, Thomas Joshua Meyer

LSU Doctoral Dissertations

Retrotransposons, a class of mobile elements, generate new copies in host genomes using RNA intermediates and reverse transcribing new copies into new loci. As such, the copy numbers of many active retrotransposon families increase dramatically over time. For example, ~42% of the human genome is comprised of retrotransposon sequences. The insertion activity of these elements, and the high degree of identity existing between the copies, have been shown to significantly impact the structure and stability of genomes, contributing in various ways from exon shuffling to inversions and from non-allelic homologous recombination to altering gene regulation. The two most successful mobile …

Upland Nesting Waterfowl Population Responses To Predator Reduction In North Dakota, Matthew R. Pieron

LSU Doctoral Dissertations

Population growth for mallards (Anas platyrhynchos), and presumably other upland nesting ducks, in the Prairie Pothole Region is most sensitive to nest success, and nest success is most strongly influenced by predation. I evaluated the efficacy of reducing predator populations to improve nest success and increase local breeding populations of upland nesting ducks on township-sized (93.2 km2) management units in eastern North Dakota, USA, during 2005−2008. I also examined potential territorial limitations on local population growth for mallards. Trappers annually removed an average of 245 predators per trapped site. I monitored 7,489 nests on 7 trapped and 5 nontrapped sites, …

"Teach Us Incessantly": Lessons And Learning In The Antebellum Gulf South, Sarah L. Hyde

LSU Doctoral Dissertations

Before 1860 people in the Gulf South valued education and sought to extend schooling to residents across the region. Southerners learned in a variety of different settings – within their own homes taught by a family member or hired tutor, at private or parochial schools as well as in public free schools. Regardless of the venue, the ubiquity of learning in the region reveals the importance of education in Southern culture. In the 1820s and 1830s, legislators in Louisiana, Mississippi, and Alabama sought to increase access to education by offering financial assistance to private schools in order to offset tuition …

Modeling Biological Structures Via Abstract Grammars To Solve Common Problems In Computational Biology, David J. Russell

Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research

Grammars are generally understood to be the set of rules that define the relationships between elements of a language. However, grammars can also be used to elucidate structural relationships within sequences constructed from any finite alphabet. In this work abstract grammars are used to model the primary and secondary structures present in biological data. These grammar models are inferred and applied to efficiently solve various sequence analysis problems in computational biology, including multiple sequence alignment, fragment assembly, database redundancy removal, and structural prediction.

The primary structures, or sequential ordering of symbols, of biological data are first modeled with Lempel-Ziv (LZ) …

Sources Of Variability In Iso-Inertial Jump Assessments, Kristie-Lee Taylor, John Cronin, Nicholas Gill, Dale Chapman, Jeremy Sheppard

Research outputs pre 2011

Purpose: This investigation aimed to quantify the typical variation for kinetic and kinematic variables measured during loaded jump squats. Methods: Thirteen professional athletes performed six maximal effort countermovement jumps on fouroccasions. Testing occurred over 2 d, twice per day (8 AM and 2 PM) separated by 7 d, with the same procedures replicated on each occasion. Jump height, peak power (PP), relative peak power (RPP), mean power (MP), peak velocity (PV), peak force (PF), mean force (MF), and peak rate of force development (RFD) measurements were obtained from a linear optical encoder attached to a 40 kg barbell. Results: A …

Wireless Acoustic Communications And Power Supply For In-Vivo Biomedical Devices, Graham Wild, Steven Hinckley

Research outputs pre 2011

Pacemakers are common biomedical devices used in the treatment of specific cardiovascular problems. Current research in biomedical engineering is investigating the use of so called brain pacemakers to regulate conditions such as Parkinson's and other neurological conditions. In this paper, we demonstrate the principle of acoustic communications and power harvesting, in vivo. The signals are intended to be used for fixed in vivo biomedical devices, such as pacemakers, were wired and wireless RF communications cannot be used. Results show the performance of the communications channel. The frequency response, transfer function and transient response (at resonance) of the communications channel were …

Proximity To Rocky Reefs Alters The Balance Between Positive And Negative Effects On Seagrass Fauna, Fernando Tuya, Mathew Vanderklift, Glenn Hyndes, Thomas Wernberg, Mads Thomsen, Christine Hanson

Research outputs pre 2011

Proximity to habitat margins can alter the balance between positive and negative forces on species abundance. Based on this idea we examined abundance patterns of herbivorous gastropods in seagrasses adjacent to rocky reefs. We tested whether the balance between the intensity of predation (negative effect) and recruitment of new individuals (positive effect) changes with increasing distance from reefs. Abundances of gastropods varied with distance to reefs, but the direction of changes in abundance was taxon-specific: some taxa decreased in abundance with increasing distance from reefs (e.g. Pyrene bidentata), while others showed the opposite pattern (e.g. Cantharidus lepidus). Predators were more …

Light Reductions Drive Macroinvertebrate Changes In Amphibolis Griffithii Seagrass Habitat, Adam Gartner, Paul S. Lavery, Kathryn Mcmahon, Anne Brearley, Helen Barwick

Research outputs pre 2011

Numerous anthropogenic activities can significantly reduce the amount of light reaching seagrass habitats. Typically these result in morphological and physiological changes to the plant and associated algal epiphytes. However, the flow-on effects to seagrass-dependent fauna induced by these disturbances has yet to be examined. This study investigated the effects of different light reduction intensity (high: ~92% reduction; moderate: ~84% reduction), duration (3, 6 and 9 mo) and timing (post-winter and post-summer) on the density and biomass of macroinvertebrate epifauna within an Amphibolis griffithii seagrass ecosystem (Western Australia). There were generally lower epifauna densities and biomass within shaded seagrass plots. When …

Stable Isotopes Reveal A Consistent Consumer-Diet Relationship Across Hundreds Of Kilometres, Mathew A. Vanderklift, Thomas Wernberg

Research outputs pre 2011

Characterising geographical variation in trophic interactions is an important step towards understanding the consequences of changes in food webs. We characterised geographical variation across ~1000 km in stable isotope values (δ15N and δ13C) of the widely distributed sea urchin Heliocidaris erythrogramma and macroalgae that are its potential food. Variation in δ15N of H. erythrogramma and macroalgae was typically greatest among locations separated by hundreds of km, while variation in δ13C was typically greatest among reefs separated by a few km. Geographical variation in δ15N and δ13C of H. erythrogramma was well-explained by variation in δ15N and δ13C of the kelp …

The Adsl Router Forensics Process, Patryk Szewczyk

Research outputs pre 2011

In 2010 the number of threats targeting ADSL routers is continually increasing. New and emergent threats have been developed to bypass authentication processes and obtain admin privileges directly to the device. As a result many malicious attempts are being made to alter the configuration data and make the device subsequently vulnerable. This paper discusses the non-invasive digital forensics approach into extracting evidence from ADSL routers. Specifically it validates an identified digital forensic process of acquisition. The paper then discusses how the approach may be utilised to extract configuration data ever after a device has been compromised to the point where …

The Relationship Between A Teacher Check List And Standardised Tests For Visual Perception Skills: A South African Remedial Primary School Perspective, Janet Richmond, K Holland

Research outputs pre 2011

Occupational therapy in remedial education settings has been questioned by the South African Government as they see occupational therapy as a costly service and thus has challenged occupational therapy clinicians’ approach to assessment. This study was undertaken to establish whether the results of standardised tests of visual perception skills, relate to teachers’ observations in respect of primary remedial school age children (six to eleven years) attending a short term remedial school because of low scholastic achievement despite having average or above intellectual ability. The Test of Visual Perceptual Skills – Revised, the Developmental Test of Visual Perception-2, the Jordan Left-Right …

Pax3 Expression In Normal Skin Melanocytes And Melanocytic Lesions (Naevi And Melanomas), Sandra Medic, Mel Ziman

Research outputs pre 2011

Background Cutaneous Malignant Melanoma is an aggressive form of skin cancer, arising in cutaneous melanocytes. The transcription factor PAX3 regulates melanocyte specification from neural crest cells during development but expression in differentiated melanocytes is uncertain. By contrast it is frequently found in melanomas and naevi and is a marker for melanoma staging and detection. In this study we analysed the expression of PAX3 across the spectrum of melanocytic cells, from normal melanocytes to cells of benign and malignant lesions to better assess its function in these various tissues. Pax3 and PAX3 (italicized) refer to the mouse and human gene, respectively; …

Turban Snails As Habitat For Foliose Algae: Contrasting Geographical Patterns In Species Richness, Thomas Wernberg, Fernando Tuya, Mads Thomsen, Gary Kendrick

Research outputs pre 2011

Understanding patterns of species richness is a major goal for ecologists, especially in space-limited habitats where many organisms live on top of others (epibiosis, e.g. by algae growing on gastropods in marine environments). We tested the hypotheses that species richness of epiflora on the gastropod Turbo torquatus would not differ between regions with similarly rich algal floras, and that epifloral richness would increase with increasing gastropod size. Macroalgal floras of Hamelin Bay (HB), Marmion (M), Jurien Bay (JB) and Kalbarri (K), Western Australia, ranged from ~20 to 40 species reef–1 (JB = HB = M ≥ K). Epiflora on small …

The Impact Of Consanguinity On Neonatal And Infant Health, Alan H. Bittles, Michael L. Black

Research outputs pre 2011

Marriage between biological relatives is widely popular in many parts of the world, with over 1000 million people living in countries where 20–50+% of unions are contracted between couples related as second cousins or closer. Consanguinity is, however, a controversial topic, in part due to public misunderstanding, complicated by often exaggerated past estimates of the adverse health outcomes. While some consanguineous couples are at high risk of conceiving a child with a genetic disorder, they are a small minority. Thus a multi-population meta-analysis has indicated an excess infant death rate of 1.1% in the progeny of first cousins, and even …

Differences In Satiety Effects Of Alginate- And Whey Protein-Based Foods, Vicky A. Solah, Deborah A. Kerr, Cynthia D. Adikara, Xingqiong Meng, Colin W. Binns, Kun Zhu, Amanda Devine, Richard L. Prince

Research outputs pre 2011

Satiety is important in regulating food intake and has important public health significance in the control of obesity. Food containing protein and non-starch polysaccharides provides a satiety effect through various mechanisms but a comparison of the satiety effect on each has not previously been investigated. This study compared the satiety effect or reduction of hunger after consumption of (i) a whey proteinbased drink versus an alginate-based drink of the same viscosity where only the protein content differed, (ii) two alginate-based drinks differing in alginate type and viscosity, and (iii) a whey protein-based drink versus an alginate-based drink differing in protein …

Assemblage Turnover And Taxonomic Sufficiency Of Subtidal Macroalgae At Multiplespatial Scales, Dan A. Smale, Gary A. Kendrick, Thomas Wernberg

Research outputs pre 2011

Spatial variability in the structure of subtidal macroalgal assemblages in southwest Australia was examined at multiple spatial scales using a three-factor hierarchal design. Spatial extents ranged from metres (between quadrats) to many hundreds of kilometres (between regions), and the study encompassed N2000 km of temperate coastline. In addition, the influence of taxonomic resolution, from species level data to class level, on spatial patterns was investigated to assess the potential evolutionary timescales of the pattern and for developing cost effective regionally applicable surrogates for biodiversity monitoring. Almost 300 species were identified from 14 sites, representing considerable biodiversity and a significant subset …

Endocrine Disruptors And Obesity: An Examination Of Selected Persistent Organic Pollutants In The Nhanes 1999-2002 Data, Mai A. Elobeid, Miguel A. Padilla, David W. Brock, Douglas M. Ruden, David B. Allison

Psychology Faculty Publications

Recent evidence suggests that endocrine disrupting chemicals (EDCs) may cause perturbations in endogenous hormonal regulation that predispose to weight gain. Using data from NHANES (1999-2002), we investigated the association between body mass index (BMI), waist circumference (WC) and selected persistent organic pollutants (POPs) via multiple linear regressions. Consistent interaction was found between gender, ln oxychlordane and ln p,p' DDT. Also, we found an association between WC and ln oxychlordane and ln hpcdd in subjects with detectable levels of POPs, whereas an association between WC and ln p,p' DDT was observed in all subjects. Furthermore, ln Ocdd showed an increase with …

Evolving Group Strategies For Ipd, Philip Hingston

Research outputs pre 2011

The Iterated Prisoners Dilemma (IPD) is often used to model cooperation between self-interested agents. In an earlier study, we introduced a framework using IPD to study the effects of species-level competition on the evolution of cooperative behaviour. In this paper, we extend the previous work, using co-evolutionary simulations of interactions between species of IPD-playing agents to investigate how group strategies may evolve. We find that the ability to cooperate more with agents of the same species greatly increases the ferocity of competition between species.

Autonomous Bee Colony Optimization For Multi-Objective Function, F Zeng, James Decraene, Malcolm Low, Philip Hingston, C Wentong, Z Suiping, M Chandramohan

Research outputs pre 2011

An Autonomous Bee Colony Optimization (A-BCO) algorithm for solving multi-objective numerical problems is proposed. In contrast with previous Bee Colony algorithms, A-BCO utilizes a diversity-based performance metric to dynamically assess the archive set. This assessment is employed to adapt the bee colony structures and flying patterns. This self-adaptation feature is introduced to optimize the balance between exploration and exploitation during the search process. Moreover, the total number of search iterations is also determined/optimized by A-BCO, according to user pre-specified conditions, during the search process. We evaluate A-BCO upon numerical benchmark problems and the experimental results demonstrate the effectiveness and robustness …

A Wrapper-Based Feature Selection For Analysis Of Large Data Sets, Jinsong Leng, Craig Valli, Leisa Armstrong

Research outputs pre 2011

Knowledge discovery from large data sets using classic data mining techniques has been proved to be difficult due to large size in both dimension and samples. In real applications, data sets often consist of many noisy, redundant, and irrelevant features, resulting in degrading the classification accuracy and increasing the complexity exponentially. Due to the inherent nature, the analysis of the quality of data sets is difficult and very limited approaches about this issue can be found in the literature. This paper presents a novel method to investigate the quality and structure of data sets, i.e., how to analyze whether there …

Absorption Enhancement Of Msm Photodetector Structure With A Plasmonic Double Grating Structure, Chee Leong Tan, Volodymyr V. Lysak, Narottam Das, Ayman Karar, Kamal Alameh, Yong Lee

Research outputs pre 2011

We present finite difference time domain simulation to analyze the optical absorption enhancement of metal-semiconductor-metal photo detectors employing double plasmonic grating structures. Simulation results show that the combination of a subwavelength aperture and double nano-structured metal grating results in up to 25 times enhancement in optical absorption, in comparison to MSM photodetector structures employing only a subwavelength aperture. This improvement of the absorption enhancement is due to the coupling out function of the bottom grating structure which distributes the light to both side of the subwavelength aperture.