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Articles 31 - 60 of 252
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Evaluation Of Enhanced Efficiency Nitrogen Fertilizers On Corn Production Systems In The Mid-South, Shanice M. Jones
Evaluation Of Enhanced Efficiency Nitrogen Fertilizers On Corn Production Systems In The Mid-South, Shanice M. Jones
LSU Master's Theses
Nitrogen (N) is often the most yield limiting nutrient, particularly in corn (Zea mays L.) production systems. In the Mid-South, high N application rates have the potential to lead to high N loss. To minimize this loss, proper N management should focus on improving N use efficiency (NUE) while optimizing productivity. The potential to achieve both tasks can be met using enhanced efficiency N fertilizer (EENF). However, limited research has directly compared the active chemicals in EENFs for corn production in the Mid-South. A study was conducted in 2013 and 2014 at two locations in Louisiana to determine the effectiveness …
A Model-Based Framework To Control The Crystal Size Distribution, Navid Ghadipasha
A Model-Based Framework To Control The Crystal Size Distribution, Navid Ghadipasha
LSU Master's Theses
Crystallization is an old unit operation in the industry which is widely used as a separation process due to its ability to produce highly valued chemical with high purity. Despite the long history of batch crystallization, industry still relies on rule of- thumb techniques for their crystallization processes. Thus, any method to improve the products characteristics such as size and morphology will be highly valued. Advances in robustness and accuracy of automated in situ sensors give the possibility to move towards an engineering based approach by implementing the real-time monitoring and control of the process. The research undertaken here investigates …
Examining Healthy Food Accessibility In Baton Rouge, Louisiana Using A Huff-Modified 2sfca Method, Xuan Kuai
Examining Healthy Food Accessibility In Baton Rouge, Louisiana Using A Huff-Modified 2sfca Method, Xuan Kuai
LSU Master's Theses
Food accessibility refers to people’s ability to access the service of food providers. Disparities in healthy food accessibility have long been a public health concern. This study proposes a new approach modified from the popular 2-Step Floating Catchment Area (2SFCA) method to measure spatial access. By incorporating a self-adaptive kernel density function extracted from the Huff Model, the proposed new method is termed the Huff-modified 2SFCA method. It is then applied to measure the healthy food accessibility in East Baton Rouge Parish, Louisiana. The research accounts for the economically disadvantaged groups that may walk or depend on public transit for …
Framing Theory And Its Application To The Fracking Controversy In St. Tammany Parish, Lindsay Colleen Rabalais
Framing Theory And Its Application To The Fracking Controversy In St. Tammany Parish, Lindsay Colleen Rabalais
LSU Master's Theses
When Helis Oil & Gas Company announced it was interested in drilling for oil in Louisiana’s St. Tammany Parish, it ignited a firestorm. The proposed drilling project would use hydraulic fracturing – or “fracking” – causing some residents to voice their concerns for the parish’s wellbeing. My thesis looks to framing theory to analyze how local media covered the issue, as well as the effects those frames might have on public policy and the lawsuits that arose out of the proposed drilling operation. I performed quantitative and qualitative content analyses of local media coverage of this issue from April 2014 …
Dosimetric Advantages Of Personalized Phantoms For Quality Assurance And Research In Radiation Dose Measurements, Andrew Michael Halloran
Dosimetric Advantages Of Personalized Phantoms For Quality Assurance And Research In Radiation Dose Measurements, Andrew Michael Halloran
LSU Master's Theses
Background: Phantoms have been in use in medical and health physics for decades, serving as a surrogate for human tissue in several different applications. In radiation dose measurements, anthropomorphic phantoms are designed with tissue substitute materials to mimic both the elemental compositions and anatomical structures of the human body. In some cases the performance of anthropomorphic phantoms for personalized measurements is severely limited by the use of reference anatomy in the geometric design. 3D printing could potentially be used to overcome some of these shortcomings by enabling rapid fabrication of personalized phantoms for individual patients based on radiographic imaging data. …
A Glorious Assemblage: The Rise Of The Know-Nothing Party In Louisiana, Ryan M. Hall
A Glorious Assemblage: The Rise Of The Know-Nothing Party In Louisiana, Ryan M. Hall
LSU Master's Theses
Between 1853 and 1856, the nativist and anti-Catholic Know-Nothing party became a powerful political force in Louisiana despite the state’s unique religious and political makeup. This thesis studies the rise of the party in three regions of the state: New Orleans, the Sugar Parishes, and North Louisiana and the Florida Parishes to show that the party gained popularity in the state differently in different regions. In New Orleans, the party rejected anti-Catholicism and adopted a stance against political corruption. In the Sugar Parishes, the Know-Nothings were merely a continuation of the Whig Party under a new name. In North Louisiana …
Nationalization And Regionalism In 1920s College Football, Bennett Jeffery Koerber
Nationalization And Regionalism In 1920s College Football, Bennett Jeffery Koerber
LSU Master's Theses
By illuminating the complexities of 1920s American society, college football serves as a remarkably insightful cultural device. At the commencement of the decade, a national business community – one that had been developing since the late nineteenth century – appeared to have come to fruition. The more connected nature of the country served to homogenize the United States economically, politically, and even socially. Citizens who had once lived autonomously found themselves more interconnected with neighboring regions of the country, and thus increasingly defined by national characteristics. This served as an internal crisis of sorts because regional identity operated as a …
Biofuel Production From Chinese Tallow Tree Seeds Using Microwave Technology, Mohamad Barekati Goudarzi
Biofuel Production From Chinese Tallow Tree Seeds Using Microwave Technology, Mohamad Barekati Goudarzi
LSU Master's Theses
In-situ transesterification (simultaneous extraction and transesterification) of Chinese tallow tree seeds into methyl esters using two microwave systems were investigated in this study. In the first part, utilizing a batch system, parameters tested were catalyst concentration (1-4 wt.%), solvent ratio (2-6 v/w), reaction time (15-60 min) and temperature (50-70°C). A high degree of oil extraction and efficient conversion of oil to biodiesel were found in the proposed range. The process was further optimized in terms of product yields and conversion rates using Dohlert optimization methodology. Based on the experimental results and statistical analysis, the optimal production yield conditions for this …
The Cost Of Design: A Life-Cycle Assessment Of Green Infrastructure Technology, Cheryl Kaye Lough
The Cost Of Design: A Life-Cycle Assessment Of Green Infrastructure Technology, Cheryl Kaye Lough
LSU Master's Theses
Landscape architectural research of green infrastructural practices has increased dramatically over the last decade. Due to this research, many designers are suggesting some form of green infrastructure within their projects. Much of the present-day research focuses on function and not long term impacts of individual materials. The current rate of implementation of green infrastructures might not produce a drastic impact upon the environment, but with installations being realized at an ever-increasing and larger scales, even minute elements within the construction of these structures begin to influence the overall ecological footprint produced by our designs. Designers must re-evaluate the materiality of …
Recent Advances And Additives Of Bone Cement And Bone Augments For Arthroplastic Surgeries, Nicholas Patrick Totaro
Recent Advances And Additives Of Bone Cement And Bone Augments For Arthroplastic Surgeries, Nicholas Patrick Totaro
LSU Master's Theses
ABSTRACT As life expectancies rise and the average age of our population increases, there has emerged a growing need for joint repair and replacement surgeries due to worn out, torn, or damaged cartilage and bone tissue. This has resulted in an escalating demand for further development of the materials used in joint replacement surgeries and advances in joint repair technology. Researchers in the tissue engineering and regenerative medicine fields have furthered the development of advanced materials for musculoskeletal repair by utilizing growth factors, nanomaterials, and antibiotics within the repair material. The first aim of this thesis was to provide a …
Language Processing And The Artificial Mind: Teaching Code Literacy In The Humanities, Jerry Scott Weltman
Language Processing And The Artificial Mind: Teaching Code Literacy In The Humanities, Jerry Scott Weltman
LSU Master's Theses
Humanities majors often find themselves in jobs where they either manage programmers or work with them in close collaboration. These interactions often pose difficulties because specialists in literature, history, philosophy, and so on are not usually "code literate." They do not understand what tasks computers are best suited to, or how programmers solve problems. Learning code literacy would be a great benefit to humanities majors, but the traditional computer science curriculum is heavily math oriented, and students outside of science and technology majors are often math averse. Yet they are often interested in language, linguistics, and science fiction. This thesis …
Comparison Of 3d And 4d Cbct For The Localization Of Moving Targets, Runyon Colie Woods
Comparison Of 3d And 4d Cbct For The Localization Of Moving Targets, Runyon Colie Woods
LSU Master's Theses
Purpose: Compare the localization accuracy of 3D cone beam computed tomography (CBCT) and 4D CBCT for a dynamic respiratory phantom, considering cases with and without respiratory variations between planning and treatment. Methods and Materials: A respiratory phantom was imaged using 3D CBCT and 4D CBCT. Measurements of the amplitude of motion in 3D CBCT and 4D CBCT and size of the sphere at its exhale position in 4D CBCT were acquired. The phantom was then misaligned by known distances relative to a reference position. 3D CBCT and 4D CBCT were used to re-align the phantom by comparing localization images to …
Social Anxiety And Cannabis-Related Impairment: The Roles Of Anxiety Sensitivity And Intolerance Of Uncertainty, Emily Robin Jeffries
Social Anxiety And Cannabis-Related Impairment: The Roles Of Anxiety Sensitivity And Intolerance Of Uncertainty, Emily Robin Jeffries
LSU Master's Theses
Cannabis use is associated with many negative consequences. Identification of factors associated with cannabis could inform prevention and treatment efforts. Social anxiety appears to be one risk factor for cannabis-related problems. Thus, it is important to identify malleable cognitive vulnerability factors that may play a role in the social anxiety-cannabis problems relationship. Anxiety sensitivity (AS) is the fear of anxiety-related bodily sensations and is composed of three subfacets: physical, cognitive, and social concerns. AS is associated with greater social anxiety and may play a role in cannabis-related impairment. Intolerance of uncertainty (IU) refers to a tendency to respond negatively to …
Dendrotempestology: Identifying The Statistical Relationship Between Hurricanes And Tree Growth In The Pine Savannas Of Coastal Mississippi, Clay Stephens Tucker
Dendrotempestology: Identifying The Statistical Relationship Between Hurricanes And Tree Growth In The Pine Savannas Of Coastal Mississippi, Clay Stephens Tucker
LSU Master's Theses
Hurricanes cause massive destruction of property and land through high wind speeds, high precipitation, and flooding from storm surge inundation. Hurricane Katrina produced nearly an 8.5 meter-high storm surge at Pass Christian, Mississippi. The envelope of high water from Hurricane Katrina covered a large area of the Gulf Coast including, but not limited to, the area from the Atchafalaya Bay in Louisiana to Mobile Bay in Alabama. This study assesses the relationship between hurricane characteristics (i.e., storm surge and maximum wind) and tree growth using coastal pine tree cores taken in Grand Bay National Estuarine Research Reserve (GBNERR). GBNERR, an …
Neodymium Isotope Ratios And A Positive Δ13c Excursion: Connecting Oceanographic And Climate Changes Near The M4-M5 Sequence Boundary Of The Late Ordovician, Zachary Wright
LSU Master's Theses
A significant positive carbon isotope excursion first described from the Guttenberg Member of the Decorah Formation in Iowa called the GICE is a defining feature of Late Ordovician chemostratigraphy. It occurs near the M4-M5 sequence boundary of the Late Ordovician and has been correlated across the globe using prominent K-bentonite ash beds and conodont biomarkers. The cause of the GICE has been debated, with some arguing that it represents the initiation of a glacial period in a greenhouse climate 10 Ma before the end Ordovician glaciation and extinction. A variety of cooling signals have been identified across the M4-M5 sequence …
Correcting The Conversation: An Argument For A Public Health Perspective Approach To University Timely Warnings About Sexual Assault, Ashley Hesson
Correcting The Conversation: An Argument For A Public Health Perspective Approach To University Timely Warnings About Sexual Assault, Ashley Hesson
LSU Master's Theses
Reports of sexual violence should be written from a public health perspective approach to appropriately frame the occurrence and encourage accurate understandings of sexual assault as a larger societal issue. This research consists of two studies to investigate the way universities do (and should) communicate about sexual violence with their students. For Study 1, interviews were conducted with a random sample of public state Universities regarding their emergency alert processes and template usage to determine current emergency communication practices. The majority of universities contacted do not have a template or best practice guidelines in place for creating timely warnings. For …
"A Circle Form'd Of Friends:" Candor, Contentiousness, And The Democratic Clubs Of The Early Republic, Andrew Luke Hargroder
"A Circle Form'd Of Friends:" Candor, Contentiousness, And The Democratic Clubs Of The Early Republic, Andrew Luke Hargroder
LSU Master's Theses
From 1792 to 1794, a confluence of frightening events created an environment of profound distrust and apprehension in the United States. Anxieties over the future of the American and French republics prevailed over sentiments of friendship and Union. Moreover, inflamed language in the partisan press, rising tensions between emerging political parties, and the centralization of federal (but seemingly monarchical) power rendered the public sphere a hostile place for all but the most secretive and cunning of participants. The tense and impassioned setting posed the following questions for Americans to contemplate: who were the true friends of the Union? What constituted …
Natural Order: The Case For Applying Biomimetic Design Principles To Mass Communication Technology Design, William Glass
Natural Order: The Case For Applying Biomimetic Design Principles To Mass Communication Technology Design, William Glass
LSU Master's Theses
In this paper I tested the effectiveness of a biomimetically designed classifier algorithm in an effort to support a new argument for the systemic application of biomimetic design principles to mass communication technology. To supplement the purely system-level test, I conducted a series of interviews with interface-level designers regarding their own design strategies, generally accepted design strategies in the field of mass communication technology design, new design strategies, and the landscape of the field in general. The findings of my test lend strong credence to biomimicry's potential systemic contribution to mass communication technology design, and the tone of the interview …
The Influence Of Marine Topography On The Antarctic Ice Sheet, Daniel Michael Mullally Jr
The Influence Of Marine Topography On The Antarctic Ice Sheet, Daniel Michael Mullally Jr
LSU Master's Theses
The primary controls on Antarctic Ice Sheet (AIS) volume and extent include changes in water temperature, precipitation, atmospheric temperature, and sea level. Here we evaluate the influence of a 5th control, the depth of the continental shelf. Shelf depth affects ice sheet mass balance in the marine environment by controlling the flux of ice that can be exported to the marine environment. This is significant because heat exchange between ocean and ice sheet have been demonstrated to be a dominant control on marine ice volume (Pollard and DeConto, 2009). We used the Parallel Ice Sheet Model (PISM) to simulate AIS …
Between-Space: Bungalows And Shadows Of Spanish Town, Anna Carey Aldridge
Between-Space: Bungalows And Shadows Of Spanish Town, Anna Carey Aldridge
LSU Master's Theses
In Spanish Town, the fabrics of the patterned streets are cross-stitched with roots of mature trees providing an airy canopy to the neighborhood below. I live in a space on the second floor of a cubed structure situated only a few steps between a small one-way street and a row of unkempt brush imitating a flowerbed. With its relationship to the street, the house seems to stand above the surrounding pitched roofs of one-story rectangles. Behind the house, you will find a light blue-gray staircase ascending to a small porch floor mounted in the trees. There is something warm and …
Potential For Geothermal Energy In Northern Louisiana: Analysis Of The Subsurface Environment In Union And Morehouse Parishes, Tessa Shizuko Hermes
Potential For Geothermal Energy In Northern Louisiana: Analysis Of The Subsurface Environment In Union And Morehouse Parishes, Tessa Shizuko Hermes
LSU Master's Theses
Efforts to mitigate greenhouse gas emissions and reduce dependence on fossil fuels have led to renewed focus on the exploration and development of alternative energy production. One such option is hydrothermal binary geothermal energy production from geothermal reservoirs with temperatures of at least 100 °C at depths no greater than 5 km. In the U.S., such systems have the potential to provide 5,400 % of 2013 total U.S. energy consumption. This study evaluates the potential for geothermal energy systems implementation in Morehouse and Union Parishes, Louisiana, by using publicly available bottom hole temperature (BHT), mud weight (MW), logged formation top …
Evaluating The Interspersal Procedure Using Free Access To A Competing Reinforcer, Catherine Rose Lark
Evaluating The Interspersal Procedure Using Free Access To A Competing Reinforcer, Catherine Rose Lark
LSU Master's Theses
Previous research has shown that interspersing additional easy problems among difficult target problems increases target problem fluency and student preference for an assignment. Nonetheless, there have been some contradictory findings concerning the efficacy of the interspersal procedure, so more research is needed to determine whether teachers should use this procedure for academic assignments. The current study attempted to replicate and extend the research on this procedure by using access to a competing reinforcer (an iPad) and a homework analogue. Fourth-grade students were given access to an iPad, but were told to work first for 10 minutes each on a control …
Influence Of Atrazine Formulation And Irrigation Incorporation Of Off-Site Transport In A Centipedegrass Home Lawn, Kimberly Joy Pope
Influence Of Atrazine Formulation And Irrigation Incorporation Of Off-Site Transport In A Centipedegrass Home Lawn, Kimberly Joy Pope
LSU Master's Theses
Atrazine, one of the most widely used herbicides in the United States, is commonly applied to southern lawn grasses to reduce weed encroachment. According to the EPA, atrazine is also one of the most frequently identified herbicidal compounds in surface and ground waters. Given the increased management intensity of home lawns in Louisiana, coupled with urban sprawl and high rainfall has led to a higher potential for movement of atrazine into surface waters during runoff events. Experiments were conducted at the LSU AgCenter Burden Botanic Gardens on centipedegrass (Eremochloa ophiuroides) at a 5% slope to evaluate the effect of atrazine …
The Physical And The Divine: Images Of Inebriation In Medieval Islamic Art Of The Umayyads From The 7th To The 11th Century, Leslie Anne Schepp
The Physical And The Divine: Images Of Inebriation In Medieval Islamic Art Of The Umayyads From The 7th To The 11th Century, Leslie Anne Schepp
LSU Master's Theses
The holy text of Islam, the Qur’an, frequently refers to wine both praising and condemning the substance. Within the confines of earth, wine is prohibited because of its intoxicating nature. Believers who imbibe wine reaching an inebriated state separate themselves from God by failing to heed his law. However, for those believers righteous enough to enter the ideal, pastoral, paradisiacal afterlife, wine is not only permitted, but a great reward from Allah. In Paradise, the righteous will lounge on soft, supple couches, and will be served copious amounts of wine from goblets of silver and glass by beautiful, immortal youths. …
A Cleansing Breath: A Journey Of Creation On The Hard Road, Addie Leigh Barnhart
A Cleansing Breath: A Journey Of Creation On The Hard Road, Addie Leigh Barnhart
LSU Master's Theses
To adhere to the structure of Louisiana State University and Swine Palace’s Actor Training program, the M.F.A. candidates are required to develop new work. This project is in place to cultivate the individual actor’s sensitivities to his/her own process in theatre making, grow as an artist, and begin the long journey of devising and constructing work, in this case a solo play, that has the potential to continue to grow after graduation. My piece is derived from several of the classic Greek plays and myths but told with a twist on the traditional stories and entirely from different women’s perspectives. …
Effect Of The Herbicide Atrazine On Phytoplankton, Water Quality, And Ecosystem Functions In Louisiana Estuaries, Alexis Victoria Starr
Effect Of The Herbicide Atrazine On Phytoplankton, Water Quality, And Ecosystem Functions In Louisiana Estuaries, Alexis Victoria Starr
LSU Master's Theses
Pesticides are used primarily for agricultural purposes in the US and while these chemicals provide many benefits, the inherent toxicity of the compounds pose a substantial risk to the environment. These chemicals may enter water bodies in areas with a high proportion of agricultural land use through surface run off, ground water discharge, and erosion, and negatively impact non-target aquatic organisms. As a result, Louisiana’s estuaries may be vulnerable to a variety of compounds, including the herbicide atrazine. Atrazine is used extensively throughout the Midwest and has been known to enter the Mississippi River through surface runoff and ground water …
Do People With Aphasia Interpret Road Signs Differently Than People Without Aphasia?, Caitlin Elise Brown
Do People With Aphasia Interpret Road Signs Differently Than People Without Aphasia?, Caitlin Elise Brown
LSU Master's Theses
Purpose: This study increased our understanding of how aphasia may affect interpretation of road signs. Background: Despite aphasia’s theoretical effects on road sign comprehension and promising initial findings in studies that investigated driving and aphasia, the literature examining aphasia and road signs has been sparse. Research has shown that aphasia may have some effect on road sign interpretation. However, more study is needed regarding both accuracy and response time to road sign interpretation, which are equally important for safe driving. Methods: This was a prospective, between group study that used data collected from a larger study by Donovan, Savage, Varnado, …
Magnetic Resonance Elastography Of The Brain Using An Ergonomic Driver: Assessment Of Scan-Rescan Reproducibility, Hatim Chafi
Magnetic Resonance Elastography Of The Brain Using An Ergonomic Driver: Assessment Of Scan-Rescan Reproducibility, Hatim Chafi
LSU Master's Theses
Magnetic resonance elastography (MRE) allows the visualization of displacement patterns from induced harmonic mechanical waves propagating in tissue. Strain and mechanical properties can be computed from these displacement patterns. Mechanical properties of tissue are affected by various disease processes. MRE has shown brain tumor to differ in stiffness in comparison to normal tissue. MRE is currently being offered as an upgrade on most conventional MRI scanners. However, the actuator supplied by vendors is a drum driver designed primarily for hepatic MRE scan. The goals of the project was to design and build an ergonomic flexible driver for use in MRE …
Reliability Of Subjective Endoscopic Parameters In The Differentiation Of Essential Voice Tremor And Adductor Spasmodic Dysphonia Using High-Speed Videoendoscopy, Lindsey A. Parker
Reliability Of Subjective Endoscopic Parameters In The Differentiation Of Essential Voice Tremor And Adductor Spasmodic Dysphonia Using High-Speed Videoendoscopy, Lindsey A. Parker
LSU Master's Theses
Certain neurogenic voice disorders present with similar or overlapping audio perceptual voice characteristics. Developing reliable and standardized perceptual measures of vocal fold vibratory characteristics for such voice disorders can enable accurate diagnosis and lead to faster, targeted treatment. In this study, subjective perceptual vocal fold vibratory characteristics and the presence and absence of supraglottic events during phonation were investigated to differentiate between Adductor Spasmodic Dysphonia (ADSD) and Essential Vocal Fold Tremor (EVT) using high-speed videoendoscopy (HSV). The specific aims of the study were to 1) assess which subjective endoscopic vocal fold vibratory measures differentiate EVT from AdSD; and 2) assess …
Fish Biomass And Community Structure Around Standing And Toppled Oil And Gas Platforms In The Northern Gulf Of Mexico Using Hydroacoustic And Video Surveys, Emily Marissa Reynolds
Fish Biomass And Community Structure Around Standing And Toppled Oil And Gas Platforms In The Northern Gulf Of Mexico Using Hydroacoustic And Video Surveys, Emily Marissa Reynolds
LSU Master's Theses
There has been relatively little study of the efficacy of decommissioned oil and gas platforms as artificial reef habitats for fish assemblages in the northern Gulf of Mexico (GOM). A variety of fish species have been reported on these structures, but the species biomass distribution and community structure has not been studied thoroughly. Hydroacoustic and video surveys were conducted quarterly from June 2013 to June 2014 at three standing and two toppled oil and gas platforms located approximately 130 km off the coast of Louisiana at 90 m depth; to gain information about the spatial biomass distribution and community structure …