Digital Commons Network^™

Determination Of Conversion Factors For Various Calibration Geometries Using Barium-133 In A Silver Zeolite Cartridge, Amin Hamideh

LSU Master's Theses

Iodine-131 (I-131) is a major fission product among other radionuclides released during a nuclear incident. This radioiodine has a half-life of 8.02 days and the primary organ of uptake through ingestion or inhalation is the thyroid gland. For these reasons, nuclear power plants must routinely monitor I-131 through air sampling. Currently, there are two adsorbing media to collect I-131: activated charcoal and silver zeolite cartridges. Silver zeolite cartridges are generally used during a post nuclear incident due to its affinity for iodine while not adsorbing noble gases such as krypton-85 and xenon-135. After an air sample is taken from a …

Investigating Cationic Metal Centers For Hydroformylation, Ryan Alexander Johnson

LSU Doctoral Dissertations

Bimetallic cooperativity can potentially increase activity of reactions. This concept is another way to increase reactivity besides simply focusing on the steric and electronic effects of a ligand. A binucleating tetrasphosphine ligand has been developed to showcase bimetallic cooperativity between two rhodium metal centers. Hydroformylation is a widely used industrial process to produce aldehydes from alkenes, H₂, and CO. The dirhodium catalyst, [Rh₂(μ-CO)(CO)₃(rac-et,ph-P4-Ph)](BF₄)₂,is highly active leading to favorable results when using a DMF/water solvent system, 1-hexene, 90 psi 1:1 H₂/CO, and 90° C: initial turnover frequency …

Entropic Energy-Time Uncertainty Relation, Patrick J. Coles, Vishal Katariya, Seth Lloyd, Iman Marvian, Mark M. Wilde

Faculty Publications

Energy-time uncertainty plays an important role in quantum foundations and technologies, and it was even discussed by the founders of quantum mechanics. However, standard approaches (e.g., Robertson's uncertainty relation) do not apply to energy-time uncertainty because, in general, there is no Hermitian operator associated with time. Following previous approaches, we quantify time uncertainty by how well one can read off the time from a quantum clock. We then use entropy to quantify the information-theoretic distinguishability of the various time states of the clock. Our main result is an entropic energy-time uncertainty relation for general time-independent Hamiltonians, stated for both the …

Assessing The Relation Between Quality And Sustainability In The Operating Room, Yasaswi Sri Sai Gudipudi

LSU Master's Theses

Maintaining quality at an affordable cost has been a major challenge for many healthcare organizations. Healthcare providers are trying to address this issue while protecting the environment, meeting social responsibilities and contributing to sustainable development of systems. Instead of linking quality with just clinical outcomes, healthcare services are trying to view quality and safety as part of professional ethics or “the right thing to do.” In order to provide a framework for quality assessment in healthcare systems, the Institute of Medicine (IOM) pointed out that the system should have the following six aims: safety, effectiveness, patient-centeredness, timeliness, efficiency, and equity. …

The Calorimetric Electron Telescope (Calet) On The International Space Station: Results From The First Two Years On Orbit, Y. Asaoka, O. Adriani, Y. Akaike, K. Asano, M. G. Bagliesi, E. Berti, G. Bigongiari, W. R. Binns, S. Bonechi, M. Bongi, A. Bruno, P. Brogi, J. H. Buckley, N. Cannady, G. Castellini, C. Checchia, M. L. Cherry, G. Collazuol, V. Di Felice, K. Ebisawa, H. Fuke, T. G. Guzik, T. Hams, N. Hasebe, K. Hibino, M. Ichimura, K. Ioka, W. Ishizaki, M. H. Israel, K. Kasahara, J. Kataoka, R. Kataoka, Y. Katayose

Faculty Publications

The CALorimetric Electron Telescope (CALET) is a high-energy astroparticle physics space experiment installed on the International Space Station (ISS), developed and operated by Japan in collaboration with Italy and the United States. The CALET mission goals include the investigation of possible nearby sources of high-energy electrons, of the details of galactic particle acceleration and propagation, and of potential signatures of dark matter. CALET measures the cosmic-ray electron+positron flux up to 20 TeV, gamma-rays up to 10 TeV, and nuclei with Z=1 to 40 up to 1, 000 TeV for the more abundant elements during a long-term observation aboard the ISS. …

Reflector Dip Trends In Seismic Sh-Wave Imaging Of A Modern Lower Mississippi River Point Bar, Adam Gostic

LSU Master's Theses

Various studies of ancient point bars have noted that a relationship can be observed between the dip angle and grain size of point bar lateral accretion deposits, with the most mud-rich deposits tending to exhibit the greatest dip. No analysis and only cursory explanations for this relationship have been provided. Additionally, buried mid-channel bars are absent from typical models of point bar architecture.

We successfully image the architecture of late-stage point bar deposits with a near surface 2D seismic SH-wave reflection survey and generate an SH-wave velocity model of the subsurface in the study area in order to interpret the …

Measurement Of The Average Shape Of Longitudinal Profiles Of Cosmic-Ray Air Showers At The Pierre Auger Observatory, A. Aab, P. Abreu, M. Aglietta, I. F.M. Albuquerque, J. M. Albury, I. Allekotte, A. Almela, J. Alvarez Castillo, J. Alvarez-Muñiz, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, H. Asorey, P. Assis, G. Avila, A. M. Badescu, A. Bakalova, A. Balaceanu, F. Barbato, R. J.Barreira Luz, S. Baur, K. H. Becker, J. A. Bellido, C. Berat, M. E. Bertaina, X. Bertou, P. L. Biermann, J. Biteau, S. G. Blaess, A. Blanco, J. Blazek

Faculty Publications

The profile of the longitudinal development of showers produced by ultra-high energy cosmic rays carries information related to the interaction properties of the primary particles with atmospheric nuclei. In this work, we present the first measurement of the average shower profile in traversed atmospheric depth at the Pierre Auger Observatory. The shapes of profiles are well reproduced by the Gaisser-Hillas parametrization within the range studied, for E>10 17.8 eV . A detailed analysis of the systematic uncertainties is performed using ten years of data and a full detector simulation. The average shape is quantified using two variables related to …

Iron Mediated Organic Preservation In A River Influenced Continental Margin, Neha Ajit Ghaisas

LSU Doctoral Dissertations

Continental margins such as the Mississippi river influenced Louisiana shelf (MIS), are important land-ocean interfaces where excessive water column productivity and rapid burial results in large amounts of organic carbon (OC) being sequestered in the sediments. The preservation of OC in sediments is controlled by a number of processes among which mineral-OC interactions are considered to be more important. Specifically, the interactions between sediment iron (Fe) species and OC have been shown to promote carbon preservation. However, the exact nature of preservation mechanism is not well understood and is based on limited global data, which specifically lacks estimates from large …

Conceptualizing Emotion Within Physical Education: Exploration Of Antecedents And Outcomes Using The Control-Value Theory Of Achievement Emotions, Kelly L. Simonton Jr

LSU Doctoral Dissertations

Investigating student emotions has gained attention in motivational literature because they represent mechanisms for interpreting experiences and behaviors. Physical education (PE) is critical to promoting skills and positive experiences that lead to an active and healthy lifestyle. Yet, in PE there is a dearth of information and theoretical evaluation of student emotions. To address this gap, this dissertation uses the control value theory of achievement emotions (CVTAE) as a lens to investigate student emotions, antecedents, and outcomes in PE-related settings.

The purpose of Study 1 was to investigate effects of an attribution-training treatment on participants’ emotions and motivation toward a …

Carceral Dreams: Punishment In Contemporary Utopian Fiction, Amandine Faucheux

LSU Doctoral Dissertations

This dissertation argues that the representation of legal violence—punishment—is an essential definitional axis to utopian literature. Utopian scholarship tends to position the political or economic system that a text imagines as the key determinant of that text’s identity as a Utopia, a dystopia, or an anti-Utopia. I propose instead that the propensity of the imaginary society to inflict violence in a legal or official context defines its utopian or dystopian quality. Through an analysis of twentieth and twenty-first century Anglophone utopian novels and stories by George Orwell, Octavia E. Butler, James Tiptree Jr. (Alice Sheldon), Adam Roberts, and Kelley Eskridge, …

Phase Estimation In Linear And Nonlinear Interferometers, Sushovit Adhikari

LSU Doctoral Dissertations

Phase estimation has a wide range of applications. Over the years, several strategies have been studied to improve precision in phase estimation. These strategies include using exotic quantum states to quantum detection schemes. This dissertation summarizes my effort in improving the precision of phase estimation with a linear and nonlinear interferometer.

Chapter 1 introduces quantum optics and quantum metrology. I introduce all relevant quantum states of light used. We also look into tools and terminologies of quantum metrology such as Fisher information, shot-noise limit, Heisenberg limit, etc., along with examples of phase estimation with a Mach-Zehnder interferometer.

In Chapter 2, …

Assessing Knowledge Of Coastal Land Loss In Louisiana High School Graduates, Madelyn Smith

Honors Capstones

No abstract provided.

Deep-Ultraviolet Laser Ablation Electrospray Ionization Mass Spectrometry, Remilekun O. Lawal, Fabrizio Donnarumma, Kermit K. Murray

Faculty Publications

© 2019 John Wiley & Sons, Ltd. A 193-nm wavelength deep ultraviolet laser was used for ambient laser ablation electrospray ionization mass spectrometry of biological samples. A pulsed ArF excimer laser was used to ablate solid samples, and the resulting plume of the desorbed material merged with charged electrospray droplets to form ions that were detected with a quadrupole time-of-flight mass spectrometer. Solutions containing peptide and protein standards up to 66-kDa molecular weight were deposited on a metal target, dried, and analyzed. No fragmentation was observed from peptides and proteins as well as from the more easily fragmented vitamin B …

Impact Of The S.T.R.I.P.E.S. Leadership And Extended Orientation Program On Philanthropic Giving, Beverly Brooks Thompson, Michael F. Burnett

Faculty Publications

This study investigated the impact participating in S.T.R.I.P.E.S., a leadership and extended orientation program, had on philanthropic giving of recent alumni of Louisiana State University. The goal was to determine if leadership development, loyalty, and engagement taught through leadership and extended orientation programs influence donations of recent graduates. S.T.R.I.P.E.S. participants had a higher percentage of donors who are female, although males gave a greater cumulative amount of money, gave more frequently, and made larger average donations. Black/African Americans and Hispanics gave greater cumulative amounts than Whites. Findings of the study revealed that participation in S.T.R.I.P.E.S. has a positive influence on …

Peerra: An Extensible And Structured Web Service For Peer-To-Peer Assistance, Drake Lambert

Honors Capstones

No abstract provided.

Racial Discrimination In Jury Selection: James Batson, The Sixth Amendment Fair-Cross-Section Doctrine, And The Racially-Based Peremptory Challenge, Kristen Marie Vicknair

Honors Capstones

No abstract provided.

The Political Leanings Of Louisiana’S Young Independents, Zoe Williamson

Honors Capstones

No abstract provided.

The Spatial Distribution Of Poverty And The Long Reach Of The Industrial Makeup Of Places: New Evidence On Spatial And Temporal Regimes, Katherine J. Curtis, Junho Lee, Heather A. O'Connell, Jun Zhu

Faculty Publications

A wealth of research identifies industrial structure as a central correlate of place-level poverty and suggests that changes in and the clustering of industry contribute to the spatial clustering of poverty over time. However, few studies have investigated the spatial and temporal dimensions simultaneously, and none have effectively examined spatiotemporal interactions. Consequently, a core tenet of theory on poverty in place has not been adequately examined. To address this limitation, we explicitly test hypotheses about systematic variation in the poverty-industry relationship over time and across space using a new method to quantify dynamic associations by simultaneously accounting for spatial and …

On The Spectrum Of Self-Adjoint Lévy Generators, David Applebaum

Communications on Stochastic Analysis

No abstract provided.

Robust Resource Allocation With Imperfect Channel Estimation In Noma-Based Heterogeneous Vehicular Networks, Shengjie Guo, Xiangwei Zhou

Faculty Publications

In heterogeneous vehicular networks, non-orthogonal multiple access (NOMA) with effective resource allocation improves spectrum efficiency by allowing multiple users to share the same channel. However, channel estimation errors caused by high mobility in vehicular networks affect system robustness and link reliability. As a result, resource allocation in high-mobility scenarios is a challenging issue. In this paper, robust resource allocation is studied to improve both the throughput performance and reliability of NOMA-based heterogeneous vehicular networks. A cascaded Hungarian channel assignment algorithm is proposed to simplify the formulated resource allocation problem with reliability requirements into a robust power allocation problem with chance …

Voc Emission Factors From 3d Printers - Abs (Acrylonitrile-Butadiene-Styrene) Type Filaments, Dean Lay

LSU Master's Theses

Acrylonitrile-butadiene-styrene (ABS) is a polymer that is widely used in many plastic products and is receiving new attention due to its use as a filament for fused deposition modelling (FDM) 3D printers. It has been shown to emit potentially dangerous volatile organic compounds (VOCs) when heated at temperatures used in the 3D printing process. Many new products are becoming available that contain various additives to the polymer matrix, which have an unknown effect on the emission profiles and rates. In this study a method is developed using a modified system for thermal diagnostic studies (STDS) to evaluate VOC emission from …

Intertwined Markings: Metafiction In The Digital Age, Taylor Danielle Orgeron

LSU Doctoral Dissertations

Intertwined Markings: Metafiction in the Digital Age maps the historical and thematic relationship between video games and contemporary works of metafiction first by detailing the intertwined histories of video games and contemporary metafiction, and then by applying new materialist and game studies methodologies to both video games and contemporary novels. Not only does the height of postmodern metafiction directly coincide with the introduction of home consoles and the golden age of arcade video games in the 1970s, but the same postmodern works considered to be canonical in metafiction studies are also those lauded as the first hypertexts in new media …

Evaluation Of Naturally Occurring Radioactive Material In Seafood From The Gulf Of Mexico, Charles Algeo Wilson Iv

LSU Doctoral Dissertations

Radioactive disintegration of naturally occurring radioactive material was modeled with high precision and no assumptions to better understand serial decay in high order disequibrlia. This model helped develop a new method of quick analysis of NORM, where radioactivity can be measured with reasonable certainty before secular equilibrium is established. This approach was a significant improvement on previous similar approaches, halving time required for the same results and reduced wait time compared to classical approaches by 92%. Consequentially, NORM was measured in selected seafood samples from three areas in the Gulf of Mexico. Red Snapper, Red Drum, Northern Whiting, Spotted Trout …

The Griffin Facility For Decay-Spectroscopy Studies At Triumf-Isac, A. B. Garnsworthy, C. E. Svensson, M. Bowry, R. Dunlop, A. D. Maclean, B. Olaizola, J. K. Smith, F. A. Ali, C. Andreoiu, J. E. Ash, W. H. Ashfield, G. C. Ball, T. Ballast, C. Bartlett, Z. Beadle, P. C. Bender, N. Bernier, S. S. Bhattacharjee, H. Bidaman, V. Bildstein, D. Bishop, P. Boubel, R. Braid, D. Brennan, T. Bruhn, C. Burbadge, A. Cheeseman, A. Chester, R. Churchman, S. Ciccone, R. Caballero-Folch, D. S. Cross, S. Cruz

Faculty Publications

Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei, GRIFFIN, is a new high-efficiency γ-ray spectrometer designed for use in decay spectroscopy experiments with low-energy radioactive ion beams provided by TRIUMF's Isotope Separator and Accelerator (ISAC-I) facility. GRIFFIN is composed of sixteen Compton-suppressed large-volume clover-type high-purity germanium (HPGe) γ-ray detectors combined with a suite of ancillary detection systems and coupled to a custom digital data acquisition system. The infrastructure and detectors of the spectrometer as well as the performance characteristics and the analysis techniques applied to the experimental data are described.

Conductors' Annotated Scores: A Comprehensive Study, Leandro De Magalhaes Gazineo

LSU Doctoral Dissertations

Conductors’ annotations have a different nature and goal from those of orchestral musicians.

The purpose of this study is to obtain a better understanding of the process of conductors’ annotations based on examined scores[1]collected from professional conductors and supported by a questionnaire answered by twenty-seven participants.

Certain questions provided a better understanding of the elements used in conductors’ annotations. For example: Why do some conductors prefer to use symbols, words, numbers, or colors? What kind of annotations are more suitable to specific repertories? Why are reinforcement markings, although redundant, so popular among conductors and why do some conductors …

Constraining The P-Mode-G-Mode Tidal Instability With Gw170817, B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, B. Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya

Faculty Publications

We analyze the impact of a proposed tidal instability coupling p modes and g modes within neutron stars on GW170817. This nonresonant instability transfers energy from the orbit of the binary to internal modes of the stars, accelerating the gravitational-wave driven inspiral. We model the impact of this instability on the phasing of the gravitational wave signal using three parameters per star: An overall amplitude, a saturation frequency, and a spectral index. Incorporating these additional parameters, we compute the Bayes factor (lnB!pgpg) comparing our p-g model to a standard one. We find that the observed signal is consistent with waveform …

Key Ne 19 States Identified Affecting Γ-Ray Emission From F 18 In Novae, M. R. Hall, D. W. Bardayan, T. Baugher, A. Lepailleur, S. D. Pain, A. Ratkiewicz, S. Ahn, J. M. Allen, J. T. Anderson, A. D. Ayangeakaa, J. C. Blackmon, S. Burcher, M. P. Carpenter, S. M. Cha, K. Y. Chae, K. A. Chipps, J. A. Cizewski, M. Febbraro, O. Hall, J. Hu, C. L. Jiang, K. L. Jones, E. J. Lee, P. D. O'Malley, S. Ota, B. C. Rasco, D. Santiago-Gonzalez, D. Seweryniak, H. Sims, K. Smith, W. P. Tan, P. Thompson, C. Thornsberry

Faculty Publications

Detection of nuclear-decay γ rays provides a sensitive thermometer of nova nucleosynthesis. The most intense γ-ray flux is thought to be annihilation radiation from the β+ decay of F18, which is destroyed prior to decay by the F18(p,α)O15 reaction. Estimates of F18 production had been uncertain, however, because key near-threshold levels in the compound nucleus, Ne19, had yet to be identified. We report the first measurement of the F19(He3,tγ)Ne19 reaction, in which the placement of two long-sought 3/2+ levels is suggested via triton-γ-γ coincidences. The precise determination of their resonance energies reduces the upper limit of the rate by a …

An Intersectional Analysis Of Black Working-Class Women Becoming Members Of The Academy, Tifanie W. Pulley

LSU Doctoral Dissertations

In a society based on race, gender and class, Black working-class women are some of the most economically marginalized invisible people in American society. However, some of these women have managed to escape economic marginalization and rise to the highest academic levels. Black working-class women becoming members of the academy is a curious phenomenon, given that the traditional American faculty profile is populated largely by white males from middle class backgrounds. Being Black, ­­working-class and female brings together a complex process of identity construction, class-consciousness, and status negotiation. For one, they were not raised in families that have traditional economic, …

Deepdrug3d: Classification Of Ligand-Binding Pockets In Proteins With A Convolutional Neural Network, Michal Brylinski, Limeng Pu, Rajiv Gandhi Govindaraj, Jeffrey Mitchell Lemoine

Faculty Publications

Comprehensive characterization of ligand-binding sites is invaluable to infer molecular functions of hypothetical proteins, trace evolutionary relationships between proteins, engineer enzymes to achieve a desired substrate specificity, and develop drugs with improved selectivity profiles. These research efforts pose significant challenges owing to the fact that similar pockets are commonly observed across different folds, leading to the high degree of promiscuity of ligand-protein interactions at the system-level. On that account, novel algorithms to accurately classify binding sites are needed. Deep learning is attracting a significant attention due to its successful applications in a wide range of disciplines. In this communication, we …

Evaluating The Impact Of Employing Local Tax Collectors To Improve State-Level Licensing Program Outcomes In Florida, Sergio Alvarez, Maria Bampasidou, Daniel Solís

Faculty Publications

© The Author(s) 2019. The improvement of public services is an important public policy objective, and several approaches have been proposed and implemented across all levels of government to achieve this goal. A recent policy in Florida (FL) fosters collaboration between local and state governments by allowing local tax collector (TC) offices to receive and support applications for the state’s concealed weapons (CW) license program. We use 80,020 application records to estimate process improvements brought about by this policy. Our analysis shows that by using TCs, the time for the application to be processed was one third the time it …