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2014

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Paul Tillich's Communication Theology And The Rhetoric Of Existentialism, Elizabeth R. Earle Jan 2014

Paul Tillich's Communication Theology And The Rhetoric Of Existentialism, Elizabeth R. Earle

LSU Master's Theses

20th century theologian and philosopher Paul Tillich believed that religion could only be understood in the context of the surrounding culture. He attempted to assert Christianity’s importance in the modern era, and did this through his use of language. In this study I examine how Tillich’s rhetorical situation uniquely informed the communication style of his sermons. Drawing on the work of Lloyd Bitzer, this rhetorical situation includes Tillich’s exigencies, rooted both in the personal and historical, his resources and constraints in the form of influences and limitations, and his audience which provided him with an arena. By examining selections from …

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Evaluation Of Pyramided Bt Corn For Management Of Corn Earworm And Fall Armyworm (Lepidoptera: Noctuidae), Fei Yang Jan 2014

Evaluation Of Pyramided Bt Corn For Management Of Corn Earworm And Fall Armyworm (Lepidoptera: Noctuidae), Fei Yang

LSU Doctoral Dissertations

The fall armyworm (FAW), Spodoptera frugiperda, and corn earworm (CEW), Helicoverpa zea, are two target pests of pyramided Bt corn in the U.S. This study determined the susceptibility of the two pests to pyramided Bt corn and evaluated if a 95:5% seed mixture of Bt and non-Bt corn was an appropriate approach for providing refuge populations of CEW for resistance management. Firstly, susceptibility of 150 F2 two-parent families to three common pyramided Bt corn traits was examined using 7-day leaf tissue bioassays and whole plant tests. A few families survived the 7-day leaf tissue bioassays but progeny of the survivors …

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Polonium-210 Dynamics In The Northern Gulf Of Mexico, Patrick Robert Jones Jan 2014

Polonium-210 Dynamics In The Northern Gulf Of Mexico, Patrick Robert Jones

LSU Master's Theses

Polonium-210 (t1/2=138 d) is the most common among the 33 known radioisotopes of Polonium found in the natural environment. It is produced by the radioactive decay of its long-lived grandparent Lead-210(t1/2=22.3 d) via Bismuth-210 (t1/2=5.012 d) and forms as part of the natural Uranium-238 decay series. The primary hazard associated with Polonium-210 is its radioactivity, as an alpha particle emitter. Marine organisms receive their maximum radioactive dose in the natural environment from Polonium-210. Polonium has been known to bioaccumulate in the marine food web and can be potentially harmful to humans via the intake of certain marine organisms. Thus it …

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Insulin Regulates Glucose Consumption And Lactate Production Through Reactive Oxygen Species And Pyruvate Kinase M2., Qi Li, Xue Liu, Yu Yin, Ji-Tai Zheng, Cheng-Fei Jiang, Jing Wang, Hua Shen, Chong-Yong Li, Min Wang, Ling-Zhi Liu, Bing-Hua Jiang Jan 2014

Insulin Regulates Glucose Consumption And Lactate Production Through Reactive Oxygen Species And Pyruvate Kinase M2., Qi Li, Xue Liu, Yu Yin, Ji-Tai Zheng, Cheng-Fei Jiang, Jing Wang, Hua Shen, Chong-Yong Li, Min Wang, Ling-Zhi Liu, Bing-Hua Jiang

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Although insulin is known to regulate glucose metabolism and closely associate with liver cancer, the molecular mechanisms still remain to be elucidated. In this study, we attempt to understand the mechanism of insulin in promotion of liver cancer metabolism. We found that insulin increased pyruvate kinase M2 (PKM2) expression through reactive oxygen species (ROS) for regulating glucose consumption and lactate production, key process of glycolysis in hepatocellular carcinoma HepG2 and Bel7402 cells. Interestingly, insulin-induced ROS was found responsible for the suppression of miR-145 and miR-128, and forced expression of either miR-145 or miR-128 was sufficient to abolish insulin-induced PKM2 expression. …

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Dynamical Models Of Elliptical Galaxies – Ii. M87 And Its Globular Clusters, A. Angello, N. Evans, Aaron Romanowsky, J. Brodie Jan 2014

Dynamical Models Of Elliptical Galaxies – Ii. M87 And Its Globular Clusters, A. Angello, N. Evans, Aaron Romanowsky, J. Brodie

Faculty Research, Scholarly, and Creative Activity

We study the Globular Cluster (GC) system of the nearby elliptical galaxy M87 using the newly available dataset with accurate kinematics (Strader et al.2011). We find evidence for three distinct sub-populations of GCs in terms of colours, kinematics and radial profiles. We show that a decomposition into three populations (blue, intermediate and red GCs) is statistically preferred to one with two or four populations, and relate them to the stellar profile. We exploit the sub-populations to derive dynamical constraints on the mass and Dark Matter (DM) content of M87 out to ∼100 kpc. We use a class of global mass-estimators …

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The Sluggs Survey: Breaking Degeneracies Between Dark Matter, Anisotropy And The Imf Using Globular Cluster Subpopulations In The Giant Elliptical Ngc 5846, N. Napolitano, V. Pota, Aaron Romanowsky, D. Forbes, J. Brodie, C. Foster Jan 2014

The Sluggs Survey: Breaking Degeneracies Between Dark Matter, Anisotropy And The Imf Using Globular Cluster Subpopulations In The Giant Elliptical Ngc 5846, N. Napolitano, V. Pota, Aaron Romanowsky, D. Forbes, J. Brodie, C. Foster

Faculty Research, Scholarly, and Creative Activity

We study the mass and anisotropy distribution of the giant elliptical galaxy NGC 5846 using stars, as well as the red and blue globular cluster (GC) subpopulations. We break degeneracies in the dynamical models by taking advantage of the different phase space distributions of the two GC subpopulations to unambiguously constrain the mass of the galaxy and the anisotropy of the GC system. Red GCs show the same spatial distribution and behaviour as the starlight, whereas blue GCs have a shallower density profile, a larger velocity dispersion and a lower kurtosis, all of which suggest a different orbital distribution. We …

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The Sluggs Survey: New Evidence For A Tidal Interaction Between The Early Type Galaxies Ngc 4365 And Ngc 4342, C. Blom, D. Forbes, C. Foster, Aaron Romanowsky, J. Brodie Jan 2014

The Sluggs Survey: New Evidence For A Tidal Interaction Between The Early Type Galaxies Ngc 4365 And Ngc 4342, C. Blom, D. Forbes, C. Foster, Aaron Romanowsky, J. Brodie

Faculty Research, Scholarly, and Creative Activity

We present new imaging and spectral data for globular clusters (GCs) around NGC 4365 and NGC 4342. NGC 4342 is a compact, X-ray luminous S0 galaxy with an unusually massive central black hole. NGC 4365 is another atypical galaxy that dominates the W' group of which NGC 4342 is a member. Using imaging from the MegaCam instrument on the Canada-France-Hawaii Telescope (CFHT) we identify a stream of GCs between the two galaxies and extending beyond NGC 4342. The stream of GCs is spatially coincident with a stream/plume of stars previously identified. We find that the photometric colours of the stream …

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Ultra Compact Dwarfs In The Core Of The Perseus Cluster: Ucd Formation Via Tidal Stripping, S. Penny, D. Forbes, J. Strader, C. Usher, J. Brodie, Aaron Romanowsky Jan 2014

Ultra Compact Dwarfs In The Core Of The Perseus Cluster: Ucd Formation Via Tidal Stripping, S. Penny, D. Forbes, J. Strader, C. Usher, J. Brodie, Aaron Romanowsky

Faculty Research, Scholarly, and Creative Activity

We present the results of a Keck/DEIMOS survey of Ultra Compact Dwarfs (UCDs) in the Perseus Cluster core. We confirm cluster membership for 14 UCDs, with radial velocities ~5300 km s−1. Two of these confirmed Perseus UCDs have extremely blue colours (B−R<0.6 mag), reside in star forming filaments surrounding NGC 1275, and have likely formed as massive star clusters in the last ~100 Myr. We also measure a central velocity dispersion of a third, UCD13 (σ0=38±8 km s−1), the most extended UCD in our sample. We determine it to have radius Re=85±1.1 pc, a dynamical mass of (2.3±0.8)×108 M⊙, and a metallicity [Z/H]=−0.52+0.33−0.29 dex. UCD13 and the cluster's central galaxy, NGC 1275, have a projected separation of 30 kpc and a radial velocity difference of ~20 km s−1. Based on its size, red colour, internal velocity dispersion, dynamical mass, metallicity and proximity to NGC 1275, we argue that UCD13 is likely the remnant nucleus of a tidally stripped dE, with this progenitor dE having MB≈−16 mag and mass ∼109 M⊙.

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A Historical And Theoretical Look At The Percussion Ensemble Work 'October Mountain' By Alan Hovhaness, Joe Willie Moore Iii Jan 2014

A Historical And Theoretical Look At The Percussion Ensemble Work 'October Mountain' By Alan Hovhaness, Joe Willie Moore Iii

LSU Doctoral Dissertations

October Mountain (1942) is one of the standard early works written for the percussion ensemble. There has, however been little examination of the work theoretically. The primary focus of this document is to study the composer, Alan Hovhaness, the compositional structure of the piece, and to provide a guide for performance as well as a historical and theoretical reference for performers, conductors, and pedagogues in the field of percussion. My research included Hovhaness’s life, his compositional styles, and the influence of cultural identity on his compositions. This required the study of compositional techniques used by Hovhaness, particularly in his percussion …

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Meso-Scale Analysis Of Deformation Induced Heating In Granular Metalized Explosives By Piston Supported Waves, Sunada Srinath Nagamani Chakravarthy Jan 2014

Meso-Scale Analysis Of Deformation Induced Heating In Granular Metalized Explosives By Piston Supported Waves, Sunada Srinath Nagamani Chakravarthy

LSU Doctoral Dissertations

Shock sensitivity of heterogeneous explosive composites is dependent on the formation of hot-spots which are small regions of elevated temperatures within the material. Changes in the initial meso-structure (i.e. packing density, composition, particle size and shapes) of the explosives can significantly alter the hot-spot fields in the material and thereby affect its shock sensitivity. In this study, an explicit, 2D, Lagrangian finite and discrete element technique is used to numerically simulate the deformation induced heating of granular mixtures of explosive (HMX), and metal (Al) particles due to piston supported uniaxial deformation waves (400 ≤ Up ≤ 800 m/s). A number …

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Conical Representations For Direct Limits Of Riemannian Symmetric Spaces., Matthew Glenn Dawson Jan 2014

Conical Representations For Direct Limits Of Riemannian Symmetric Spaces., Matthew Glenn Dawson

LSU Doctoral Dissertations

We extend the definition of conical representations for Riemannian symmetric space to a certain class of infinite-dimensional Riemannian symmetric spaces. Using an infinite-dimensional version of Weyl's Unitary Trick, there is a correspondence between smooth representations of infinite-dimensional noncompact-type Riemannian symmetric spaces and smooth representations of infinite-dimensional compact-type symmetric spaces. We classify all smooth conical representations which are unitary on the compact-type side. Finally, a new class of non-smooth unitary conical representations appears on the compact-type side which has no analogue in the finite-dimensional case. We classify these representations and show how to decompose them into direct integrals of irreducible conical …

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Reformulations For Control Systems And Optimization Problems With Impulses, Jacob Blanton Jan 2014

Reformulations For Control Systems And Optimization Problems With Impulses, Jacob Blanton

LSU Doctoral Dissertations

This dissertation studies two different techniques for analyzing control systems whose dynamics include impulses, or more specifically, are measure-driven. In such systems, the state trajectories will have discontinuities corresponding to the atoms of the Borel measure driving the dynamics, and these discontinuities require further definition in order for the control system to be treated with the broad range of results available to non-impulsive systems. Both techniques considered involve a reparameterization of the system variables including state, time, and controls. The first method is that of the graph completion, which provides an explicit reparameterization of the time and state variables. The …

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Effect Of The Bp Deepwater Horizon Oil Spill On Critical Marsh Soil Microbial Functions, Jason Paul Pietroski Jan 2014

Effect Of The Bp Deepwater Horizon Oil Spill On Critical Marsh Soil Microbial Functions, Jason Paul Pietroski

LSU Master's Theses

On April 20, 2010, the BP Deepwater Horizon (DWH) offshore oil platform exploded releasing ~ 795 million L of southern Louisiana (LA) light sweet crude oil into the Gulf of Mexico. Approximately 7.9 million liters of dispersant, Corexit EC9500A, were applied for remediation. The effect of BP DWH crude oil and Corexit EC9500A on two marsh soil microbial processes, (mineralizable nitrogen and denitrification), were examined in the laboratory. Surface soil samples were collected from an unimpacted salt marsh site proximal to areas that suffered light to heavily oiling in Barataria Bay, LA. Additions of oil were at a ratio of …

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Composition Control Of Spinel Lithium Manganese Oxide For High Voltage, High Energy Lithium Ion Batteries, Hilary Eikhuemelo Jan 2014

Composition Control Of Spinel Lithium Manganese Oxide For High Voltage, High Energy Lithium Ion Batteries, Hilary Eikhuemelo

LSU Master's Theses

In the quest for renewable source of energy, a remarkable step made was in the introduction of the battery system. The lithium ion battery was revolutionary in this regard particularly for its light weight and high energy density. There has been significant progress in the development of this battery system since the present form was introduced in the 1990s. There is currently a global dependence on the use of lithium ion battery in diverse applications such as in the electronics, communications and automobiles. Unfortunately, the energy obtainable from the lithium ion battery continuously falls behind the energy demand. This setback …

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Data Distribution In Hpx, Bibek Ghimire Jan 2014

Data Distribution In Hpx, Bibek Ghimire

LSU Master's Theses

High Performance Computation (HPC) requires a proper and efficient scheme for distribution of the computational workload across different computational nodes. The HPX (High Performance ParalleX) runtime system currently lacks a module that automates data distribution process so that the programmer does not have to manually perform data distribution. Further, there is no mechanism allowing to perform load balancing of computations. This thesis addresses that issue by designing and developing a user friendly programming interface conforming to the C++11/14 Standards and integrated with HPX which enables to specify various distribution parameters for a distributed vector. We present the three different distribution …

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Some Numerical And Phenomenological Studies In Loop Quantum Cosmology, Brajesh Kumar Gupt Jan 2014

Some Numerical And Phenomenological Studies In Loop Quantum Cosmology, Brajesh Kumar Gupt

LSU Doctoral Dissertations

A key feature of the singularity resolution in loop quantum cosmology (LQC) is the occurrence of the quantum bounce when the spacetime curvature becomes comparable to the Planck scale. The presence of quantum bounce greatly modifies the dynamics of the early universe and can have important implications for observational signatures. Although the quantum bounce has been previously studied via numerical methods for initial conditions that correspond to large macroscopic universes at late times, a detailed study of the robustness of the quantum bounce for a generic class of initial condition has so far been missing due to severe computational challenges. …

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Modeling Of Foam Flow In Porous Media For Subsurface Environmental Remediation, Seungjun Lee Jan 2014

Modeling Of Foam Flow In Porous Media For Subsurface Environmental Remediation, Seungjun Lee

LSU Doctoral Dissertations

Among numerous foam applications in a wide range of disciplines, foam flow in porous media has been spotlighted for improved/enhanced oil recovery processes in petroleum-bearing geological formations and shallow subsurface in-situ NAPL (non-aqueous phase liquid) environmental remediation in contaminated soils and aquifers. In those applications, foams are known to reduce the mobility of gas phase by increasing effective gas viscosity and improve sweep efficiency by mitigating subsurface heterogeneity. This study investigates how surfactant/foam process works fundamentally for environmental remediation purpose by using MoC (Method of Characteristics) based foam modeling and simulation techniques. It consists of two main parts: Part 1, …

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“Trans-Positioning” Carbons Within Strained Caged Bicyclic(S): Rom/Rcm (Ring-Opening/Ring-Closing) Metathesis And Dieckmann/Retro-Dieckmann Condensation Routes To A Cis-Decalin Infrastructure, Stefan Malone Cooper Jr Jan 2014

“Trans-Positioning” Carbons Within Strained Caged Bicyclic(S): Rom/Rcm (Ring-Opening/Ring-Closing) Metathesis And Dieckmann/Retro-Dieckmann Condensation Routes To A Cis-Decalin Infrastructure, Stefan Malone Cooper Jr

LSU Doctoral Dissertations

This dissertation describes methodology work involving a “Trans-Positioning” motif engaging strategically positioned carbons within a strained bi-carbocyclic core and on a tethered free-dangling hydrocarbon chain ultimately for skeletal rearrangement. Trans-alkenylation and trans-acylation processes are devised for investigation with bicyclo[2.2.2]octyl and bicyclo[2.2.1]heptyl strained cores. Recent advances in olefin metathesis led to an independent proposal of the now applicable, RRM (Ring-Rearranging Metathesis) for trans-alkenylation purposes. A resourceful Dieckmann/retro-Dieckmann sequence is devised for trans-acylation motives. Finally, this dissertation includes atypical diastereoselective reductions and additions which were serendipitously found with trigonal carbon atoms appended to our pertinent strained systems while in pursuit of our …

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Analysis Of The Risk And Protective Factors Among Low-Income, First-Generation College Students, Samantha Bates Jan 2014

Analysis Of The Risk And Protective Factors Among Low-Income, First-Generation College Students, Samantha Bates

LSU Master's Theses

One population of particular concern for college-employed social workers is the low-income, first-generation (LIFG) student population. As the national pressure to increase retention in college has intensified, many students are graduating from universities across the country and starting professional careers. In the college population, some students may be classified as either low-income, first-generation, or both. The two classifications combined define a vulnerable population within colleges and universities – those students who are both low-income and first-generation students. The need to examine LIFG college students’ experiences after admittance, particularly in relation to degree attainment, can help social workers determine what programs …

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Piercing Privilege: Confronting The White Problem Through Autoethnography, Destiny Marie Adams Cooper Jan 2014

Piercing Privilege: Confronting The White Problem Through Autoethnography, Destiny Marie Adams Cooper

LSU Master's Theses

In this reflexive autoethnography, the author explores the “White Problem” by examining narratives of personal transformation resulting from her involvement in Dialogue on Race Louisiana (DORLA), an “educational process for the elimination of race.” The main query of this piece is: How has the author’s relationship to whiteness worked to reify or trouble the “White Problem?” Using writing as a method of inquiry, the author recounts several pivotal experiences that correspond to DORLA’s Original Six Week Series session topics and exhibit personal transformations in her interpretations of racism. After defining the research process, design, and product in Chapter One, the …

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Teaching Climate Literacy Using Geospatial Tools, Steven L. Babcock Jan 2014

Teaching Climate Literacy Using Geospatial Tools, Steven L. Babcock

LSU Master's Theses

Antarctica is the world’s coldest, driest and windiest continent. It is a harsh environment that few people will ever see but it is a very important part of our Earth system. Over the past 34 million years the climate in Antarctica has deteriorated from one that supported lush vegetation to the conditions observed today. By studying this trend and the associated changes to ice and vegetation we can gain critical insight into climate changes taking place today. This thesis presents three pieces of curricula that will help students and the general public understand some of the research currently underway in …

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Spectrum Sensing, Spectrum Monitoring, And Security In Cognitive Radios, Erfan Soltanmohammadi Jan 2014

Spectrum Sensing, Spectrum Monitoring, And Security In Cognitive Radios, Erfan Soltanmohammadi

LSU Doctoral Dissertations

Spectrum sensing is a key function of cognitive radios and is used to determine whether a primary user is present in the channel or not. In this dissertation, we formulate and solve the generalized likelihood ratio test (GLRT) for spectrum sensing when both primary user transmitter and the secondary user receiver are equipped with multiple antennas. We do not assume any prior information about the channel statistics or the primary user’s signal structure. Two cases are considered when the secondary user is aware of the energy of the noise and when it is not. The final test statistics derived from …

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Changes In Climate And Moisture Availability In The Antarctic Eocene, Oligocene, And Miocene: Evidence From Palynological And Stable Isotope Geochemical Analyses Of The Shaldril And Andrill Cores, Kathryn Whitney Griener Jan 2014

Changes In Climate And Moisture Availability In The Antarctic Eocene, Oligocene, And Miocene: Evidence From Palynological And Stable Isotope Geochemical Analyses Of The Shaldril And Andrill Cores, Kathryn Whitney Griener

LSU Doctoral Dissertations

Prior to the Late Eocene, the Antarctic continent experienced lush vegetation under temperate conditions. Just before the Eocene/Oligocene Boundary, the climate of the southernmost continent began to deteriorate dramatically. This cooling trend largely continued until most Antarctic vegetation disappeared, ~13.85-12.8 Ma. Classifying the nature and cause of Antarctica’s drastic climate change is essential for furthering our knowledge of Earth’s history, and also for grasping the potential effects of current and future climate shifts. Here, I present evidence from three new palynomorph-centric studies that deepen our understanding of Antarctic earth science, climate change, and of climate proxies. The first study involved …

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Evaluating Alternative Techniques For Forecasting Industrial And Occupational Employment, Drew A. Varnado Jan 2014

Evaluating Alternative Techniques For Forecasting Industrial And Occupational Employment, Drew A. Varnado

LSU Doctoral Dissertations

This paper offers three different regional output-by-industry forecasting techniques (time series, Social Accounting Matrix (SAM)-based, and Computable General Equilibrium (CGE)-based) and two different occupation-by-industry matrices (national and state geographies) for use in the creation of industry/occupation employment forecasts. Estimates are compared to actual data from eight years from 2001 to 2010. OLS regressions are run to determine how well modeled employment estimates fit actual employment for the state of Louisiana. A meta-analysis style regression of the R-sqaured values on model characteristics (accounted for using Boolean dummy-variables) determines that industrial output forecasting techniques do not provide statistically different R-squared values, but …

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Evaluation Of Stromatolites From The 3.4 Ga Kromberg Formation, Barberton Greenstone Belt, South Africa, Corey E. Shircliff Jan 2014

Evaluation Of Stromatolites From The 3.4 Ga Kromberg Formation, Barberton Greenstone Belt, South Africa, Corey E. Shircliff

LSU Master's Theses

Silicified sedimentary rocks from the 3.4 Ga Kromberg Formation of the Barberton Greenstone Belt in South Africa contain laminated structures that have been identified as possible stromatolites in the field. Morphological evaluation and a variety of chemical analyses are presented here, in an effort to describe the samples in a sedimentary context and consider biogenicity of these laminated forms. Two major types of laminated structures were identified in the field – domical laminates and flat-laminated samples with little to no synoptic relief. The domical sample presents the best morphological evidence for biogenicity. There are several characteristics that suggest the deposition …

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Robust Preconditioners For The High-Contrast Elliptic Partial Differential Equations, Zuhal Unlu Jan 2014

Robust Preconditioners For The High-Contrast Elliptic Partial Differential Equations, Zuhal Unlu

LSU Doctoral Dissertations

In this thesis, we discuss a robust preconditioner (the AGKS preconditioner) for solving linear systems arising from approximations of partial differential equations (PDEs) with high-contrast coefficients. The problems considered here include the standard second and higher order elliptic PDEs such as high-contrast diffusion equation, Stokes' equation and biharmonic-plate equation. The goal of this study is the development of robust and parallelizable preconditioners that can easily be integrated to treat large configurations. The construction of the preconditioner consists of two phases. The first one is an algebraic phase which partitions the degrees of freedom into high and low permeability regions which …

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A Diagnosis Feature Space For Condition Monitoring And Fault Diagnosis Of Ball Bearings, Ali Kahirdeh Jan 2014

A Diagnosis Feature Space For Condition Monitoring And Fault Diagnosis Of Ball Bearings, Ali Kahirdeh

LSU Master's Theses

The problem of fault diagnosis and condition monitoring of ball bearings is a multidisciplinary subject. It involves research subjects from diverse disciplines of mechanical engineering, electrical engineering and in particular signal processing. In the first step, one should identify the correct method of investigation. The methods of investigation for condition monitoring of ball bearings include acoustic emission measurements, temperature monitoring, electrical current monitoring, debris analysis and vibration signal analysis. In this thesis the vibration signal analysis is employed. Once the method of analysis is selected, then features sensitive to faults should be calculated from the signal. While some of the …

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L'Envers De L'Histoire De Jacques Collin: On A New Approach To Balzac's Most Infamous Criminal Mastermind, Lauren Elise Pendas Jan 2014

L'Envers De L'Histoire De Jacques Collin: On A New Approach To Balzac's Most Infamous Criminal Mastermind, Lauren Elise Pendas

LSU Master's Theses

Scholarship has failed to explore adequately how Honoré de Balzac evokes the human condition’s universal elements through his most infamous criminal mastermind: Jacques Collin, alias Vautrin. Unlike analyses of Collin that I have encountered, this thesis takes all three novels and the obscure play in which Collin appears into account, challenges the transparency of his statements and the narration’s descriptions of him, explores the conservative position framing Balzac’s critique of early nineteenth-century Paris, and actively focuses on evidence of Collin’s typical subjectivity (i.e. his insatiable desire and fallibility). Consequently, this reading does not evaluate Collin’s significance solely through his apparent …

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Experiences Of A Novice Modeler Navigating The Alternative Certification Process, Melanie Matherne Dimler Jan 2014

Experiences Of A Novice Modeler Navigating The Alternative Certification Process, Melanie Matherne Dimler

LSU Master's Theses

Interactive Engagement methods of instruction have proven more effective than Traditional instruction in terms of conceptual learning in introductory physics classrooms. Modeling instruction is one type of Interactive Engagement methodology used in introductory physics at the secondary and collegiate level. This study compares the conceptual gains of students taught by an experienced traditional instructor to the conceptual gains of students taught by a novice, alternatively certified instructor who employs the Modeling methodology in physics classes at a large suburban high school. Pre-tests and post-tests were administered to all groups using validated physics conceptual inventories and a scientific reasoning assessment. AP …

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Effects Of Storm Surge And Nutrient Loading On Coastal Wetland Soil Processes: Implications For Ecosystem Function, Morgan Mckee Jan 2014

Effects Of Storm Surge And Nutrient Loading On Coastal Wetland Soil Processes: Implications For Ecosystem Function, Morgan Mckee

LSU Master's Theses

Coastal Louisiana is at risk from increases in salinity from storm surge and nutrient loading from the Mississippi River. Increased salinity causes plant death, decreases in microbial productivity, and shifts in biogeochemical processes. Eutrophication is linked to shifts in plant communities and changes in wetland biogeochemical properties. We hypothesized that 1) storm surge would increase soil porewater salinity and decrease extractable ammonium (NH4), and 2) long-term nutrient loading would decrease soil extracellular enzyme activity and increase total nutrients. Intact soil cores from two sites in the Wax Lake Delta were continually flooded with 35 g L-1 salt water for 1, …

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