Digital Commons Network^™

Signature Of Charge Migration In Modulations Of Double Ionization, François Mauger, Paul M. Abanador, Adam Bruner, Adonay Sissay, Mette B. Gaarde, Kenneth Lopata, Kenneth J. Schafer

Faculty Publications

© 2018 American Physical Society. We present a theoretical investigation of charge migration following strong-field ionization in a multielectron system. We study a model homonuclear molecule with two electrons, each restricted to one dimension (1+1D), interacting with a strong, static electric field. We show that in this system charge migration results from the interplay between multiple ionization channels that overlap in space, creating a coherent electron-hole wave packet in the cation. We also find that, in our case, charge migration following the first ionization manifests as a modulation of the subsequent double-ionization signal. We derive a parametrized semiclassical model from …

Using Github In Large Software Engineering Classes: An Exploratory Case Study, Miroslav Tushev

LSU Master's Theses

GitHub has been recently used in Software Engineering (SE) classes to facilitate col- laboration in student team projects. The underlying tenet is that the technical and social feature of GitHub can help students to communicate and collaborate more effectively as a team as well as help teachers to evaluate individual student contribution more objectively. To shed more light on this, in this case study, we explore the benefits and drawbacks of using GitHub in SE classes. Our study is conducted in a software engineering class of 91 students divided into 18 teams. Our research method includes an entry and an …

Waste Management By Waste: Removal Of Acid Dyes From Wastewaters Of Textile Coloration Using Fish Scales, S M Fijul Kabir

LSU Master's Theses

Removal of hazardous acid dyes by economical process using low-cost bio-sorbents from wool industry wastewaters is of a pressing need, since it causes skin and respiratory diseases and disrupts other environmental components. Fish scales (FS), a by-product of fish industry, a type of solid waste, are usually discarded carelessly resulting in pungent odor and environmental burden. In this research, the FS of black drum (Pogonias cromis) were used for the removal of acid dyes (acid red 1 (AR1), acid blue 45 (AB45) and acid yellow 127 (AY126)) from wool industry wastewaters by absorption process with a view to …

Entropic Bounds On Two-Way Assisted Secret-Key Agreement Capacities Of Quantum Channels, Noah Anthony Davis

LSU Doctoral Dissertations

In order to efficiently put quantum technologies into action, we must know the characteristics of the underlying quantum systems and effects. An interesting example is the use of the secret-key-agreement capacity of a quantum channel as a guide and measure for the implementation of quantum key distribution (QKD) and distributed quantum computation. We define the communication task of establishing a secret key over a quantum channel subject to an energy constraint on the input state and while allowing for unlimited local operations and classical communication (LOCC) between a sender and receiver. We then use the energy-constrained squashed entanglement to bound …

Development Of A Literary Dispositif: Convening Diasporan, Blues, And Cosmopolitan Lines Of Inquiry To Reveal The Cultural Dialogue Among Giuseppe Ungaretti, Langston Hughes, And Antonio D’Alfonso, Anna Ciamparella

LSU Doctoral Dissertations

This dissertation seeks to create a literary dialogue among the Italian poet Giuseppe Ungaretti, the African American author Langston Hughes, and the Quebecois writer Antonio D’Alfonso. Giuseppe Ungaretti and Langston Hughes were more or less contemporaries. Ungaretti was born in 1888 and Hughes in 1902, and both were active in modernist movements that shaped the literary history of their own countries. D’Alfonso was born in Canada about half a center after Ungaretti and Hughes. Besides significant generational differences, these three authors also underwent personal and intellectual experiences that shaped their writing in seemingly incomparable ways. While a traditional comparative approach …

Nutrition Misconceptions And Awareness Among College Students In A University Community, Shervia Singleton Taylor

LSU Doctoral Dissertations

Identification of misconceptions of macronutrients (carbohydrate, protein, and fat ) and awareness of ailments linked to micronutrients (potassium, fiber, Vitamin D. and food label use) based on certain demographics are vital to improving and developing long term health benefits, increasing consumption of fruits and vegetables, and decreasing healthcare cost associated with poor dietary lifestyles among non-major general biology college students at a historically black college and university located in the southern part of the United States. Misconception Identification (all groups) was determined using the pretest and posttest Nutrition Knowledge Test via Qualtrics that included two and three tiered question format …

On Structures Of Large Rooted Graphs, Shilin Wang

LSU Doctoral Dissertations

A rooted graph is a pair (G,R), where G is a graph and R⊆V(G). There are two research topics in this thesis. One is about unavoidable substructures in sufficiently large rooted graphs. The other is about characterizations of rooted graphs excluding specific large graphs.

The first topic of this thesis is motivated by Ramsey Theorem, which states that K_n and ¯(K_n ) are unavoidable induced subgraphs in every sufficiently large graph. It is also motivated by a classical result of Oporowski, Oxley, and Thomas, which determines unavoidable large 3-connected minors. We first determine unavoidable induced subgraphs, and unavoidable subgraphs in …

Workflows For X-Ray And Neutron Interferometry/Tomography As Applied To Additive Manufacturing, Jumao Yuan

LSU Doctoral Dissertations

Grating-based interferometry/tomography is being rapidly developed for non-destructive evaluation of additive manufacturing test articles. An application requiring an efficient workflow is extremely necessary for stress and fatigue testing samples.

At present, scientific workflows play an important role for computational experiments in additive manufacturing 3D printing and interferometry/tomography imaging analysis. A clear workflow template allows scientists to process experiments easier and faster. Work flow library grows, but to find an appropriate workflow for their task is challenging. In our research, there are mainly three portions in the workflow, interferometry analysis, image reconstruction and 3D visualization. Currently, the hierarchy of workflows in …

The Ghost You Deserve, Alicia Sarah Dennis

LSU Master's Theses

In The Ghost You Deserve, a young entrepreneur has developed the ability to artificially replicate deceased family members using the memories of their living loved ones. Spectral resurrections, as they’re called, have become status symbols among the upper middle class. These chapters follow Raj, the brilliant but flawed creator of BioSpec, juxtaposing the story of his college relationship with a young woman named Amada in 2005 with glimpses of him in the present, where he keeps a carefully constructed representation of his ex-girlfriend in a glass mansion by the sea. The novel examines campus relationship abuse and the unintended …

The Effects Of Metal Speciation, Content And Cluster Size In Fly Ash On Pcdd/F Formation, Xia Guan

LSU Doctoral Dissertations

Transition metal oxides present in waste incineration systems have the ability to catalyze the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) through surface mediated condensation of organic dioxin precursors. Current studies have concentrated on the catalytic effects of individual transition metal oxides, while the complex composition of fly ash introduces the possibility of synergistic or antagonistic effects between multiple, catalytically active components. In addition, there is at present hardly a quantitative link between fly ash physical properties/chemical reactivity and PCDD/Fs yield.

We have tested fly ash surrogates containing different ratios of iron (III) oxide and copper (II) oxide …

On The Computation Of The Rate-Equivocation Region For Wyner's Wire-Tap Channels, Meena Gangula

LSU Doctoral Dissertations

In a wire tap channel, the transmitter Alice communicates with the legitimate receiver, Bob, in the presence of another receiver, Eve. The goal is to keep the wiretapper, Eve, as ignorant as possible about the information sent to Bob. For communication channels where the adversary, Eve, eavesdrops on the information sent between the legitimate users by wiretapping at the Bob's end, Wyner introduced secure encoding schemes and showed that non zero reliable transmission rate is possible in perfect secrecy. Wyner also obtained the information theoretic achievable rate equivocation region (Rb, DeltaK) for discrete memoryless wire tap channels. The rate equivocation …

Formation Control Of Multi-Agent Systems By Using Rigid Graphs, Pengpeng Zhang

LSU Doctoral Dissertations

This research is devoted to the decentralized formation control of multi-agent systems in two- and three-dimensional space. Rigid graph theory is used to describe the interactions between the agents, and Lyapunov theory and input-to-state stability are the main tools for designing and analyzing the stability of the proposed formation controllers. Two formation problems are addressed in this work: formation acquisition, where the goal is for the agents to form and maintain a pre-defined geometric shape; and formation maneuvering, where the agents need to acquire a formation and move cohesively as a virtual rigid body.

In the first problem, we tackle …

Editors’ Introduction: On The Promise And Possibilities Of Arts Integration In Education, Margaret Mary Sulentic Dowell, Christian Z. Goering

Faculty Publications

No abstract provided.

Effects Of Enhanced Efficiency Nitrogen Fertilizers On Agronomic Parameters And Loss Pathways In The Subtropical Mississippi Delta Region, Scott Michael Pensky

LSU Master's Theses

Minimizing nitrogen (N) loss is critical for improving N use efficiency (NUE) in crop production and reducing its effects on the environment. Management practices such as seasonal application timing of N fertilizers and the addition of enhanced efficiency N fertilizers (EENFs) were investigated for the high N requirement of the two most common cereal crops globally, corn (Zea mays L.) and wheat (Triticum aestivum L.), in the subtropical climate of Louisiana. Field research was established during the 2016 and 2017 seasons at the LSU Agricultural Center’s Dean Lee and Central research stations to examine the effect of different EENFs and …

Relating Diets And Food Availability To Long-Term Population Trends Of Lesser Scaup Wintering On Lake Pontchartrain, Louisiana, Clay Michael Stroud

LSU Master's Theses

Lake Pontchartrain provides wintering habitat for a continentally-significant proportion of lesser scaup (Aythya affinis). Mid-winter aerial surveys indicate dramatic variation in annual scaup abundance (0–1,194,907), though the mechanisms driving fluctuations have not been previously investigated. In response to natural and anthropogenic disturbances, species composition, abundance, and size structure of benthic invertebrate populations in Lake Pontchartrain exhibit drastic variability among years. Given that wintering scaup feed primarily on mollusks, environmental disturbances have the potential to influence scaup dynamics on the estuary by altering the benthic community. To diagnose trophic linkages and variation in scaup abundance, we collected ducks (n=60) …

Evaluation Of Controlled-Release Nitrogen And Potassium Fertilizer In Louisiana Sugarcane Production, Samuel Kwakye

LSU Master's Theses

Sugarcane (Saccharum spp) production is an integral part of Louisiana's economy. Proper fertilizer management, particularly nitrogen (N) and potassium (K), optimizes sugarcane production. An experiment was established in 2015 at the LSU AgCenter Sugar Research Station in St. Gabriel, Louisiana to: (1) assess the effect of N and K fertilizer sources on sugarcane yield and quality parameters, and (2) monitor the changes in inorganic N and K levels in the soil at different sugarcane growth stages. The experiment was arranged in a randomized complete block design on a Sharkey clay soil and complete randomized design on a Commerce …

Linguistic Political Ecology With The Ngäbe Indigenous People Of Panama, Ginés A. Sánchez Arias

LSU Doctoral Dissertations

Indigenous communities from all corners of the globe live in uncertain times. From the vantage point of their “remote" lands, they undergo some of globalization’s most harmful externalities. Their homes become increasingly harder to maintain as extractive industries, development schemes, clandestine land grabs, and national bureaucracies encroach creating new colonial lands. First by assimilation, and then integration, these processes systematically undermine indigenous culture and autonomy. In place of such destructive coloniality, indigenous societies shelter unique ecological and linguistic knowledge that continues to serve their progress. This research applies lessons learned from studying with Ngäbe communities of western Panama, towards a …

An Index For Measuring Community Resilience To Flooding In Baton Rouge, Louisiana, Yi Ling Chan

LSU Master's Theses

The greater Baton Rouge area in Louisiana has been impacted by repeated floods throughout its history. The most recent flood in August 2016 resulted in damages to over 80,000 homes and businesses and upwards of $430 million in public assistance granted by the Federal Emergency Management Agency. East Baton Rouge Parish and neighboring Livingston and Ascension parishes are expected to face compounded pressures and risks with the threat of increasing frequency of flood events coupled with expanding populations due to continuing suburbanization and inland migration from those living on Louisiana's coast. The purpose of this research is to create and …

Weary At Work: A Conservation Of Resources Approach To Understanding Job-Related Boredom, Candace Angela Esken

LSU Doctoral Dissertations

Despite the pervasive nature of boredom in the workplace, there has been surprisingly little theoretical and empirical analysis on the phenomenon. The existing research suffers from several shortcomings preventing progress on job-related boredom including the lack of an agreed definition and a properly developed and validated measure of the construct. This dissertation addresses these deficiencies by first developing and validating a psychometrically sound measure for job-related boredom. Then, drawing upon conservation of resources theory, hypotheses for the antecedents and consequences of job-related boredom were tested using a sample of 199 employees at a large insurance organization in the United States. …

Accumulation Of Blue Carbon And Nutrients In An Active Delta Of Coastal Louisiana, Madeline Leblanc

Honors Capstones

No abstract provided.

Eddystone Beacons For Earthquake Survivors Identification, Grant Connolly

Honors Capstones

No abstract provided.

Operator Semigroups Induced By First-Order Differential Equations, Amy Adair

Honors Capstones

No abstract provided.

Resilience In Context: How Cultural Factors Influence Migration Decisions Of Individuals In Flood-Prone Areas Of Coastal Louisiana, Brandon Champagne

Honors Capstones

No abstract provided.

The Fate Of Soil Carbon In Louisiana’S Eroding Coastal Wetlands And Potential Impact On Future Climate, Amanda Fontenot

Honors Capstones

No abstract provided.

Some Results From The Lariat Experiment, Derek Walker

Honors Capstones

No abstract provided.

Evaluation Of Hertz’S Contact Stress Solution For Deformable Truncated Indenters, Kathleen M. Edwards

Honors Capstones

No abstract provided.

“When One Door Closes: The Evolution Of Journalists’ Gatekeeping Role”, Katherine Mariae Gagliano

Honors Capstones

No abstract provided.

Radiomic Feature Analysis And Classification Of Tumors For Serial Pre-Clinical Spect/Ct Data, Megan Chesal

Honors Capstones

No abstract provided.

Gastrointestinal Helminth Prevalence In Lesser Scaup (Aythya Affinis) Wintering On Lake Pontchartrain, Louisiana, Usa, Sydney Cottingham

Honors Capstones

No abstract provided.

Phylogenetic Similarities Among Bacteria Isolated From Songbirds, Rachel Croy

Honors Capstones

No abstract provided.