Digital Commons Network^™

Proton Dose Calculations In Homogeneous Media, John Wesley Chapman, Jr.

LSU Master's Theses

In this study, a proton pencil beam dose calculation algorithm was developed for a parallel, monoenergetic beam incident on a homogeneous water phantom. Fermi-Eyges theory (Eyges 1948) was used to transport pencil beams, and the characteristic width of elastic scatter events was modeled using the differential Moliere scattering power (Gottschalk 2010). The incorporation of this scattering power formalism allowed our model to account for multiple Coulomb scattering, single scattering, plural scattering, and rigorously accounted for material effects on scatter. Nonelastic nuclear interactions were incorporated into an additional pencil beam model. The attenuation of primary fluence due to nuclear events was …

Collective Security Or World Domination: The Soviet Union And Germany, 1917-1939, Mark Davis Kuss

LSU Doctoral Dissertations

Since the end of World War II, a rather consistent narrative has appeared regarding the origins of this terrible conflict: Hitler started it. The victorious western powers emerged as innocent victims in the titanic struggle while the USSR, once allied to both Hitler and the west, took on the role of principal villain during the Cold War. With the collapse of communism and the partial opening of Soviet archives, a re-assessment appeared, principally under the heading of the “Collective Security School.” As politically incorrect as it may seem, sober reflection indicates that the Soviet Union was actually the peacemaker in …

A Seminaphthofluorescein-Based Fluorescent Chemodosimeter For The Highly Selective Detection Of Cysteine, Xiaofeng Yang, Yixing Guo, Robert M. Strongin

Chemistry Faculty Publications and Presentations

A fluorescent chemodosimeter for cysteine detection was developed based on a tandem conjugate addition and intramolecular cyclization reaction. The method exhibited an excellent selectivity for cysteine over other biothiols such as homocysteine and glutathione.

An Investigation Into Urban Elementary Teachers' Educational Beliefs In Regards To Teaching Writing: Comparing Experiences And Self-Reported Beliefs To Teacher Practices, Shalanda Stanley

LSU Doctoral Dissertations

This six week study investigated six urban elementary teachers’ educational beliefs in regards to teaching writing, comparing their personal histories as writers with their self-reported beliefs on writing and teaching writing, with that of their teacher practices. A further analysis examined how closely aligned their teacher practices were to research-validated practices. During this ethnographic case study, three questions were explored. These questions were: (a) How do teachers’ personal histories with writing inform their beliefs regarding writing in general, as well as their beliefs on teaching writing?, (b) How do teachers’ educational beliefs in regards to teaching writing inform their instructional …

Shadow Citizens: Felony Disenfranchisement And The Criminalization Of Debt, Ann Cammett

Scholarly Works

The disenfranchisement of felons has long been challenged as anti-democratic and disproportionately harmful to communities of color. Critiques of this practice have led to the gradual liberalization of state laws that expand voting rights for those who have served their sentences. Despite these legal developments, ex-felons face an increasingly difficult path to regaining the franchise. This article argues that, for ex-felons in particular, criminal justice debt can serve as an insurmountable obstacle to the resumption of voting rights and broader participation in society. This article uses the term “carceral debt” to identify criminal justice penalties levied on prisoners, “user fees” …

Tainted Love: An Increasingly Odd Arbitral Infatuation In Derogation Of Sound And Consistent Jurisprudence, Jeffrey W. Stempel

Scholarly Works

No abstract provided.

Taking Cognitive Illiberalism Seriously: Judicial Humility, Aggregate Efficiency, And Acceptable Justice, Jeffrey W. Stempel

Scholarly Works

No abstract provided.

The Role Of Managers Within The Welfare System: How Race And Negative Stereotypes About Clients Affect Managers' Tolerance Of Caseworker Discretion, Alethia Marie Picciola

LSU Master's Theses

Previous research studies found differences in social welfare policy implementation based on the racial and ethnical differences of clients, workers, and managers. The public perception of welfare recipients being content with living on government money and unmotivated to become self-sufficient is a central theme throughout American culture. The current study examined whether parish-level managers’ personal beliefs about their clients are associated with their tolerance of frontline staff’s discretionary practices. Additionally, the author examined the role that the race of managers plays in the personal beliefs they hold about their clients as well as their tolerance of frontline discretion. This study …

Double-Bond Isomerization Of Long Chain Olefins, James Edward Bruno

LSU Master's Theses

Bruno, James Edward, B.S., Western Michigan University, 2010 Master of Science, Fall Commencement, 2012 Major: Chemical Engineering Double-Bond Isomerization of Long Chain Olefins Thesis directed by Professor Kerry Dooley Pages in thesis, 54. Words in Abstract, 349. ABSTRACT Alkenyl Succinic Anhydride (ASA) is commonly used in the paper industry as a sizing agent. ASA is produced by reacting maleic anhydride with long-chain internal olefins. Such olefins are only available with the double bond in the terminal position, so an isomerization step is necessary. The isomerization can be catalyzed using solid strong acid catalysts, such as those containing sulfonic acid groups. …

Evading Legislative Jurisdiction, Austen L. Parrish

Articles by Maurer Faculty

In the last few years, and mostly unnoticed, courts have adopted a radically different approach to issues of legislative jurisdiction. Instead of grappling with the difficult question of whether Congress intended a law to reach beyond U.S. borders, courts have side-stepped it entirely. Courts have done so by redefining the definition of extraterritoriality. Significant and contentious decisions in the Ninth and D.C. Circuits paved the way by holding that not all regulation of overseas foreign conduct is extraterritorial. And then suddenly, last term, the U.S. Supreme Court breathed life into the practice. In its landmark Morrison v. National Australia Bank …

Inside The Seed Of School Accountability: An African-Centered Analysis, Rodrick Lerone Jenkins

LSU Doctoral Dissertations

I use Marimba Ani’s Asili concept as defined in Yurugu to examine the school accountability model. By school accountability model, I mean the school model that consists of privately managed “public schools” regulated by state testing programs. I argue that school accountability is essentially oppressive and its success depends on the falsification of African and African American history. Ani explains that Asili is a Kiswalhili term meaning “beginning,” “origin,” “source,” “nature (in the sense of the ‘nature’ of a person or thing),” “essence,” or “fundamental principle.” Furthermore, Ani writes that seed is an “ubiquitous African analogical symbol in African philosophical …

Fatigue Performance Of Existing Bridges Under Dynamic Loads From Winds And Vehicles, Wei Zhang

LSU Doctoral Dissertations

During the life cycle of bridges, varied amplitude of stress ranges on structural details are induced by the random traffic and wind loads. The progressive deteriorated road surface conditions might accelerate the fatigue damage accumulations. Micro-cracks in structural details might be initiated. An effective structural modeling scheme and a reasonable fatigue damage accumulation rule are essential for stress range acquisitions and fatigue life estimation. The present research targets at the development of a fatigue life and reliability prediction methodology for existing steel bridges under real wind and traffic environment with the capability of including multiple random parameters and variables in …

Photojournalism As Photonationalism, Jeremy Kreusch

LSU Master's Theses

The public saw the wars in Iraq (2003 – 2012) and Afghanistan (2001 – present) through the lens of reverence and sentimentality toward the soldier. This was manifest not simply in the catchy “support our troops” rhetoric, but in the one-sided depiction of the experience of battle by the photojournalists who worked for the major news organizations in the Western world. From the emotionally bloated to the nationalistic, the photographs taken by “embedded” photojournalists, whether the result of heavy-handed censorship or merely political influence, presented a consistent image: the soldier as a selfless victim of his or her own heroism. …

Multiscale Viscoplastic-Viscodamage Analysis Of Shape Memory Polymer Fibers With Application To Self Healing Smart Materials, Amir Shojaei

LSU Doctoral Dissertations

Self-healing smart material systems have been introduced into the research arena and they have already been deployed into industrial applications. The Close-Then-Heal (CTH) healing mechanism for polymeric self-healing systems is addressed herein and then a new generation of Shape Memory Polymer (SMP) based self-healing system is proposed in this work. This system incorporates SMP fibers to close the cracks while the embedded Thermoplastic Particles (TPs) are diffused into the crack surfaces upon heating and provide a molecular level of healing. The SMP fiber manufacturing procedure is briefly addressed in this work in which the bobbin of SMP fibers are heat …

Integrative Gene Regulatory Network Analysis Reveals Light-Induced Regional Gene Expression Phase Shift Programs In The Mouse Suprachiasmatic Nucleus., Haisun Zhu, Rajanikanth Vadigepalli, Rachel Rafferty, Gregory E Gonye, David R Weaver, James S Schwaber

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

We use the multigenic pattern of gene expression across suprachiasmatic nuclei (SCN) regions and time to understand the dynamics within the SCN in response to a circadian phase-resetting light pulse. Global gene expression studies of the SCN indicate that circadian functions like phase resetting are complex multigenic processes. While the molecular dynamics of phase resetting are not well understood, it is clear they involve a "functional gene expression program", e.g., the coordinated behavior of functionally related genes in space and time. In the present study we selected a set of 89 of these functionally related genes in order to further …

Knockdown Of Ki-67 By Dicer-Substrate Small Interfering Rna Sensitizes Bladder Cancer Cells To Curcumin-Induced Tumor Inhibition., Sivakamasundari Pichu, Swapna Krishnamoorthy, Andrei Shishkov, Bi Zhang, Peter Mccue, Biddanda C Ponnappa

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Transitional cell carcinoma (TCC) of the urinary bladder is the most common cancer of the urinary tract. Most of the TCC cases are of the superficial type and are treated with transurethral resection (TUR). However, the recurrence rate is high and the current treatments have the drawback of inducing strong systemic toxicity or cause painful cystitis. Therefore, it would be of therapeutic value to develop novel concepts and identify novel drugs for the treatment of bladder cancer. Ki-67 is a large nucleolar phosphoprotein whose expression is tightly linked to cell proliferation, and curcumin, a phytochemical derived from the rhizome Curcuma …

Emergence Of Bimodal Cell Population Responses From The Interplay Between Analog Single-Cell Signaling And Protein Expression Noise., Marc R Birtwistle, Jens Rauch, Anatoly Kiyatkin, Edita Aksamitiene, Maciej Dobrzyński, Jan B. Hoek, Walter Kolch, Babatunde A Ogunnaike, Boris N Kholodenko

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

BACKGROUND: Cell-to-cell variability in protein expression can be large, and its propagation through signaling networks affects biological outcomes. Here, we apply deterministic and probabilistic models and biochemical measurements to study how network topologies and cell-to-cell protein abundance variations interact to shape signaling responses.

RESULTS: We observe bimodal distributions of extracellular signal-regulated kinase (ERK) responses to epidermal growth factor (EGF) stimulation, which are generally thought to indicate bistable or ultrasensitive signaling behavior in single cells. Surprisingly, we find that a simple MAPK/ERK-cascade model with negative feedback that displays graded, analog ERK responses at a single cell level can explain the experimentally …

Finding A Forum For North Korea, Morse Tan

Faculty Articles, Papers, and Other Scholarship

North Korea’s gross and systematic violations of human rights violate international law, including contravention of the treaties that North Korea itself has ratified (i.e., the International Covenant on Civil and Political Rights; the International Covenant on Economic, Social and Cultural Rights; the Convention on the Rights of the Child; and the Convention on the Elimination of All Forms of Discrimination Against Women). Nevertheless, a surprising dearth of legal scholarship exists with respect to arguably the worst human rights situation in the world. This Article analyzes possible tribunals to provide a measure of redress for the victims of these heinous violations …

Measurement Of The Differential Cross Section Dσ/Dt In Elastic Pp- Scattering At √S = 1.96 Tev, David Hedin

Faculty Articles, Papers, and Other Scholarship

We present a measurement of the elastic differential cross section dσ( pp-→ pp-)/dt as a function of the four-momentum-transfer squared t. The data sample corresponds to an integrated luminosity of ≈ 31 nb-1 collected with the D0 detector using dedicated Tevatron pp- Collider operating conditions at √s = 1.96 TeV and covers the range 0.26 < │t │ < 1:2 GeV2. For │t│< 0.6 GeV2, dσ/dt is described by an exponential function of the form Ae-b│t│with a slope parameter b = 16.86 ± 0.10(stat) ± 0.20(syst) GeV-2. A change in slope is observed at │t│≈ 0.6 GeV2, followed by a more gradual │t│ dependence with increasing values of │t│.

Combination Of The Top Quark Mass Measurements From The Tevatron Collider, David Hedin

Faculty Articles, Papers, and Other Scholarship

The top quark is the heaviest known elementary particle, with a mass about 40 times larger than the mass of its isospin partner, the bottom quark. It decays almost 100% of the time to a W boson and a bottom quark. Using top-antitop pairs at the Tevatron proton-antiproton collider, the CDF and D0 Collaborations have measured the top quark’s mass in different final states for integrated luminosities of up to 5.8 fb-1. This paper reports on a combination of these measurements that results in a more precise value of the mass than any individual decay channel can provide. It describes …

Glacial Deposits, Vol. 40, 2011-2012, Department Of Geography-Geology

Glacial Deposits

Newsletter of the Department of Geography-Geology

Variations In Pore Water Salinities Above And Below Allochthonous Salt Sheets In The Deepwater Gulf Of Mexico: Implications For Mechanisms Of Solute Transport, Miles Alexander Mccammon

LSU Master's Theses

Spatial variations in salinity of pore waters in marine sediments provide useful information on processes and rates of subseafloor fluid flow and solute transport, particularly if there are evaporites in the section. Pore water salinities were determined for 18 drill holes which penetrated allochthonous salt bodies in 12 widely-scattered protraction blocks on the Louisiana offshore continental shelf and slope. Salinities were calculated from Log ASCII Standard-Logging While Drilling (LAS-LWD) logs using the Revil et al. (1998) dual-conductivity technique. The sites represent a wide range of field settings. Water depths range from 30 to 1990 m, depths to the top of …

A Safety Elements Model For The Building Construction Industry, Cliff Dunlap Dunlap

LSU Doctoral Dissertations

The Abstract was sent to Ms. McKenzie as an attachment to an e-mail

Improving Middle School Math Achievement Using A Web-Based Program And Extended Written Tasks, Sarah Claire Dyer

LSU Master's Theses

This thesis outlines a dual-intensity approach using a web-based program, MyMathLab, for procedural fluency and, in parallel, extended written tasks for helping students improve their reasoning skills, to learn to use multiple representations, and securing mathematical knowledge. The new Common Core State Standards have increased expectations and achievement goals at all grade levels, the required changes being most significant at earlier grade levels (in elementary and middle schools). It is my assertion that a combined approach, one that encompasses both procedure-oriented practice for fluency and extended written tasks designed to stretch thinking and reasoning is needed to meet these goals.

Incorporating Neonicotinoid And Anthranilic Diamide Insecticides Into Integrated Pest Management Of Rice Water Weevil, Lissorhoptrus Oryzophilus, Srinivas K. Lanka

LSU Doctoral Dissertations

Seed treatments with chlorantraniliprole and thiamethoxam have been used for the management of rice water weevil, Lissorhoptrus oryzophilus in the United States. Both insecticides being plant-systemic could potentially target multiple life stages of L. oryzophilus. The rational use of these chemicals as seed treatments in weevil management requires thorough understanding on targeted life stages of L.oryzophilus and, the relative persistence and potency of both chemicals. A series of greenhouse and laboratory experiments were conducted on weevils by culturing rice plants treated as seeds with different rates of chlorantraniliprole and thiamethoxam. Adult feeding assays on foliage from treated plants revealed divergent …

Volunteer Based Organizations: Bridging The Gap Between Political Efficacy And Civic Engagement, Kristin Nicole Marks

LSU Master's Theses

With the declining participation in civic engagement behaviors such as voting, people are turning to other means to demonstrate civic participation. This study examined the role of volunteering as a means to establish civic engagement. Because of this civic participation behavioral shift, the relationship between civic engagement and the communication tactics used by volunteer based organizations was investigated. This study investigated the relationship between civic engagement and political efficacy. Additionally, this study examined the interplay between organizational characteristics (trust, control mutuality, exchange relationship, and commitment) and civic engagement. Lastly, perceptions of new and traditional methods of communications to encourage civic …

Ayahuasca Characterization, Metabolism In Humans, And Relevance To Endogenous N,N-Dimethyltryptamines, Ethan Hamilton Mcilhenny

LSU Doctoral Dissertations

Ayahuasca denotes an Amazonian psychotropic plant tea obtained from Banisteriopsis caapi, which contains beta-carboline (b-carboline) alkaloids, chiefly harmine, harmaline and tetrahydroharmine. The tea usually incorporates the leaves of Psychotria viridis, which are rich in N,N-dimethyltryptamine (DMT), a psychoactive 5-HT2A agonist. The beta-carbolines reversibly inhibit monoamine-oxidase (MAO), effectively preventing oxidative deamination of the orally inactive DMT and allowing its absorption and access to the central nervous system. Despite increased use of the tea worldwide, easy to perform and validated methods for its characterization do not exist and the metabolism and excretion of DMT and the b-carbolines has not been studied systematically …

A Seismic Attribute Study To Assess Well Productivity In The Ninilchik Field, Cook Inlet Basin, Alaska, Andrew Sampson

LSU Master's Theses

Coal bed methane which has formed in the Tertiary Kenai Group strata has been produced from the Ninilchik field of Cook Inlet, Alaska since 2001. Ninilchik field is located on the eastern margin of the central Cook Inlet along the Kenai Peninsula. Cook Inlet is a forearc basin and is characterized by northeast trending anticlines with upwards of 10,000 feet of Late Oligocene and younger, non-marine sediments. Highly variable well production within the Oligocene to Miocene Tyonek formation of the Kenai Group has been a source of uncertainty. A series of seismic attributes visualized in Schlumberger's Petrel® software were studied …

Biomass And Mass Balance Isotope Content Of Mussel Seep Populations, Philip Martin Riekenberg

LSU Master's Theses

Cold seep mussels, Bathymodiolus childressi, are common cold seep constituents that form large populations at upper continental slope (500-1000 m) cold seep sites in the Northern Gulf of Mexico. These mussels utilize methane present through symbiotic relationships with methanotrophic bacteria. This study uses a coupled isotope technique to determine the relative incorporation of respiratory carbon in the shell as a measure of the availability of methane between different seep sites. This method indicates a higher abundance of methane at the Brine Pool site than at the Bush Hill site which appears significantly more resource limited and that changes in methane …

Composing A Method: Écriture Féminine As Performance Practice, Brianne Waychoff

LSU Doctoral Dissertations

The overall aim of this project is to theorize and invent a method of performance based on écriture féminine. This method is meant to be useable, generative, and transferable to other practitioners. Following a heuretic practice of reading selected texts for what they suggest about making new texts, writerly method that invites expansion in future research is revealed. This project is but a beginning of an articulation and proposes only one path through these texts. The tracking of the process of reading and experimenting with performance provides a space for reflection that illuminates gaps to be explored in future work. …