Digital Commons Network^™

Minerals Matter: Science, Technology, And Society, Barbara L. Dutrow

Faculty Publications

The expertise of earth scientists is crucial for solving some of today's most pressing challenges, including global warming and the climate crises, natural hazard reduction, water and soil quality, exploration for critical elements for our technological society, and many others.

Search Full Text Options Here 3 Of 3 Heat-Mitigated Design And Lorentz Force-Based Steering Of An Mri-Driven Microcatheter Toward Minimally Invasive Surgery, Martin Francis Phelan Iii, Mehmet Efe Tiryaki, Jelena Lazovic, Hunter Gilbert, Metin Sitti

Faculty Publications

Catheters integrated with microcoils for electromagnetic steering under the high, uniform magnetic field within magnetic resonance (MR) scanners (3-7 Tesla) have enabled an alternative approach for active catheter operations. Achieving larger ranges of tip motion for Lorentz force-based steering have previously been dependent on using high power coupled with active cooling, bulkier catheter designs, or introducing additional microcoil sets along the catheter. This work proposes an alternative approach using a heat-mitigated design and actuation strategy for a magnetic resonance imaging (MRI)-driven microcatheter. A quad-configuration microcoil (QCM) design is introduced, allowing miniaturization of existing MRI-driven, Lorentz force-based catheters down to 1-mm …

A Survey Of Blind Modulation Classification Techniques For Ofdm Signals, Anand Kumar, Sudhan Majhi, Guan Gui, Hsiao-Chun Wu, Chau Yuen

Faculty Publications

Blind modulation classification (MC) is an integral part of designing an adaptive or intelligent transceiver for future wireless communications. Blind MC has several applications in the adaptive and automated systems of sixth generation (6G) communications to improve spectral efficiency and power efficiency, and reduce latency. It will become a integral part of intelligent software-defined radios (SDR) for future communication. In this paper, we provide various MC techniques for orthogonal frequency division multiplexing (OFDM) signals in a systematic way. We focus on the most widely used statistical and machine learning (ML) models and emphasize their advantages and limitations. The statistical-based blind …

A Survey Of Blind Modulation Classification Techniques For Ofdm Signals, Anand Kumar, Sudhan Majhi, Guan Gui, Hsiao-Chun Wu, Chau Yuen

Faculty Publications

Blind modulation classification (MC) is an integral part of designing an adaptive or intelligent transceiver for future wireless communications. Blind MC has several applications in the adaptive and automated systems of sixth generation (6G) communications to improve spectral efficiency and power efficiency, and reduce latency. It will become a integral part of intelligent software-defined radios (SDR) for future communication. In this paper, we provide various MC techniques for orthogonal frequency division multiplexing (OFDM) signals in a systematic way. We focus on the most widely used statistical and machine learning (ML) models and emphasize their advantages and limitations. The statistical-based blind …

The Effects Of Negative Life Events On Pessimistic Future Outlook: Mediating Effects Of Anxiety And Behavior, Kia Harris

Honors Capstones

No abstract provided.

The Effects Of Team Surface-Level Diversity On Creativity & Innovation, Roman Mitchell

Faculty Publications

During the last 20 years, the global marketplace has become more competitive due to increased globalization, aggressive market competition, and changing customer demands. This has forced organizations to assemble teams with diverse knowledge, skills, and abilities to remain competitive. However, previous meta-analytic investigations examining the relationship between team surface-level diversity (i.e., race or gender identity), creativity, and innovation have indicated a small negative relationship. Despite the said positive effects of team diversity, theory and empirical evidence suggests that increased surface-level team diversity leads to decreased team collaboration, team cohesion, and diminished creativity and innovation (Bell, 2007).

This study explores the …

A New Matroid Lift Construction And An Application To Group-Labeled Graphs, Zach Walsh

Faculty Publications

A well-known result of Brylawski constructs an elementary lift of a matroid M from a linear class of circuits of M. We generalize this result by constructing a rank-k lift of M from a rank-k matroid on the set of circuits of M. We conjecture that every lift of M arises via this construction. We then apply this result to group-labeled graphs, generalizing a construction of Zaslavsky. Given a graph G with edges labeled by a group, Zaslavsky's lift matroid K is an elementary lift of the graphic matroid M(G) that respects the group-labeling; specifically, the cycles of G that …

An Investigation Of How Previous Diagnoses Affect The Developmental Functioning Of Children At Risk For Autism Spectrum Disorder, Michaela Brown

LSU Master's Theses

Research has shown that children with autism spectrum disorder (ASD) often have co-occurring medical and/or psychiatric disorders. This current study aimed to investigate how previous diagnoses, which may become comorbidities of ASD if diagnosed, affect the developmental functioning of children presenting as at risk for ASD compared to those presenting with no risk. Developmental areas such as communication, motor, adaptive, cognitive and social, as well as overall developmental functioning, were considered in the analysis. 11,970 children under the age of three were studied. Results found that the presence of previous diagnoses significantly predicted developmental functioning, particularly in the motor functioning …

Heteroaggregation Of Lignin-Zein Nanoparticles: Effects Of Relative Size And Concentration, Yada Chulakham

LSU Master's Theses

Nanotechnology has become an advanced tool for manufacturing materials of the future. As the size of a material is reduced to a nanoscale, its surface area to volume ratio increases drastically, and its surface property becomes size dependent. This allows scientists to make use of unique properties that nanomaterials have to offer to create novel materials that otherwise could not have been achieved in meter-scale materials. As more industrial companies have planned to incorporate different types of nanomaterials into their products, it is undeniable that some of these nanomaterials will be released to the environment. Such possibility has led to …

Three Essays On Climate Smart Agriculture And Multidimensional Poverty In Uganda, Sarah Kagoya

LSU Doctoral Dissertations

Agriculture is the backbone of the Ugandan economy. It contributes about 23.1% to the gross domestic product and employs approximately 72% of the total labor force (World Bank, 2021). However, Uganda suffers from low agricultural productivity resulting from pests and diseases, changing climate, deteriorating natural resources, and lack of modern factors of production. In addition, land deterioration and fluctuating weather patterns lead to reduced crop productivity and cause food insecurity in the country. Climate-Smart Agriculture (CSA) can help transform the agricultural system and ensure food security in the country.

The dissertation is written in a three-essay format. The first essay …

Simulation_Data_Nasem_Grp, Temitope Ajayi, Ipsita Gupta

Petroleum Engineering Datasets

No abstract provided.

Deformed No-Core Shell Model And Symplectic Effective Field Theory, David Kekejian

LSU Doctoral Dissertations

Most nuclei are deformed! This simple fact has been established since Bohr and Mot- telson, and successfully demonstrated from first principles by nuclear structure calculations carried out using the ab-initio Symmetry-Adapted No-Core Shell Model (SA-NCSM) us- ing realistic interactions. This simple fact has been the main driver towards understanding the underlying physics; namely, that symplectic symmetry describes deformation and is a dominant symmetry in all nuclei independent of A (nucleon number) and of the realistic interaction used. These two simple observations laid the foundation of this thesis work to explore the applications of symplectic symmetry towards defining a deformed symplectic …

Diabetes Status Modifies The Association Between Different Measures Of Obesity And Heart Failure Risk Among Older Adults: A Pooled Analysis Of Community-Based Nhlbi Cohorts, Kershaw V. Patel, Matthew W. Segar, Carl J. Lavie, Nitin Kondamudi, Ian J. Neeland, Jaime P. Almandoz, Corby K. Martin, Salvatore Carbone, Javed Butler, Tiffany M. Powell-Wiley, Ambarish Pandey

Clinical Research Faculty Publications

Background: Obesity and diabetes are associated with a higher risk of heart failure (HF). The interrelationships between different measures of adiposity-overall obesity, central obesity, fat mass (FM)-and diabetes status for HF risk are not well-established. Methods: Participant-level data from the ARIC study (Atherosclerosis Risk in Communities; visit 5) and the CHS (Cardiovascular Health Study; visit 1) cohorts were obtained from the National Heart, Lung, and Blood Institute Biologic Specimen and Data Repository Information Coordinating Center, harmonized, and pooled for the present analysis, excluding individuals with prevalent HF. FM was estimated in all participants using established anthropometric prediction equations additionally validated …

Generalized Cost-Effectiveness Of Residential Wind Mitigation Strategies For Wood-Frame, Single Family House In The Usa, Fatemeh Orooji, Carol J. Friedland, Rose Dominic Savio, Arash Taghinezhad, Carol C. Massarra, Nazla Bushra, Robert V. Rohli

Faculty Publications

Wind is one of the deadliest and most expensive hazards in the United States. Wind hazards cause significant damage to buildings and economic losses to homeowners. Economic losses average approximately $3.8 billion annually from hurricane winds and are not decreasing, even despite enhanced construction practices to reduce wind damage. Thus, the effectiveness of mitigation strategies should be evaluated in order to lower the cost incurred by this hazard. Several studies have suggested building code improvements to mitigate the wind hazard, this additional comprehensive research provides selecting economically beneficial mitigation strategies to consider in building code revisions. In a step toward …

Connecting Ansatz Expressibility To Gradient Magnitudes And Barren Plateaus, Zoe Holmes, Kunal Sharma, M Cerezo, Patrick Coles

Faculty Publications

Parametrized quantum circuits serve as ansatze for solving variational problems and provide a flexible paradigm for the programming of near-term quantum computers. Ideally, such ansatze should be highly expressive, so that a close approximation of the desired solution can be accessed. On the other hand, the ansatz must also have sufficiently large gradients to allow for training. Here, we derive a fundamental relationship between these two essential properties: expressibility and trainability. This is done by extending the well-established barren plateau phenomenon, which holds for ansatze that form exact 2-designs, to arbitrary ansatze. Specifically, we calculate the variance in the cost …

A Necessary Shift? A Qualitative Exploration Of Black Women’S Experiences With Altering Self-Presentation For Job Attainment, Dorothy Rachael Kemp

LSU Doctoral Dissertations

The purpose of this study was to explore how Black women describe their experiences with shifting for job attainment, including their perception of identity, and how they interpret and negotiate any outcomes of shifting. The study was guided by the following research questions: (1) How do Black women describe their experiences with shifting for job attainment? (2) How do Black women interpret and negotiate any outcomes of shifting? (3) How do Black women perceive their identity in terms of their experiences with shifting?

Ten participants shared their personal experiences shifting throughout their job attainment process. Each participant self-identified as Black …

Drug Resistance In The Canine Filarial Parasite, Dirofilaria Immitis: Emergence And Clinical Epidemiology In The Lower Mississippi River Alluvial Valley, Cassan Nicole Pulaski

LSU Doctoral Dissertations

Strains of Dirofilaria immitis suspected of lack of efficacy (LOE) to macrocyclic lactone (ML) preventive drugs have been increasingly reported in dogs by practicing veterinarians since 2005 in the Lower Mississippi Delta region. If proven, and not controlled in the early stages, the emergence of ML drug resistance threatens to become a widespread problem in the US that may limit the effectiveness of current preventive drug treatment methods. To validate practice reports, a statewide survey of Louisiana veterinarians was done to define the extent of the problem and identify focal ‘hotspots’ of reported ML LOEs using Geographic Information Systems (GIS) …

Fibrogenesis And Adipogenesis In Farm Animals And Rodents, Chaoyang Li

LSU Doctoral Dissertations

In this dissertation, we aimed to provide additional insight into the mechanisms of fibrogenesis and adipogenesis based on different animal models to help the discovery of new treatments in cardiovascular disease, beef breeding strategies, and feed nutrition modifications.

Wayu, the Japanese Black cow, are well-known for their high IMF content, while the Brahman cattle have much less marbling. The development of IMF correlated with the increase in the size and number of IMF adipocytes, which have identified to be derived from a group of progenitor cells known as fibro/adipogenic progenitor (FAP) cells because of their bipotent differentiation ability. Interestingly, the …

Interpretable And Anti-Bias Machine Learning Models For Human Event Sequence Data, Zihan Zhou

LSU Doctoral Dissertations

Growing volumes and varieties of human event sequence data are available in many applications such as recommender systems, social network, medical diagnosis, and predictive policing. Human event sequence data is usually clustered and exhibits self-exciting properties. Machine learning models especially deep neural network models have shown great potential in improving the prediction accuracy of future events. However, current approaches still suffer from several drawbacks such as model transparency, unfair prediction and the poor prediction accuracy due to data sparsity and bias. Another issue in modeling human event data is that data collected from real word is usually incomplete, and even …

The Body As A Means Of Cultural Awareness And Social Intervention: The Case Of Raymond Duncan And Penelope Sikelianos, Ekaterini Diakoumopoulou

Tête à Tête: Journal of Francophone Studies

Using the example of the Duncan family this article will explore the human body as an object of self-determination, a means of overcoming social boundaries, a field of racist shooting and phobic enforcement, a reference point of public outrage and the complex between sociality and corporality, but also as a tool of political vigilance and social intervention. Does a body dressed in a tunic resist the western way of life? Or is it a stereotypical outpouring of people unable to modernize? Is the body instrumentalized as a means of narrating exoticism? The bodies of the Duncan family members are an …

Notation That Considers The Body: The Glyphs Of Nancy Stark Smith, Margarita Delcheva

Tête à Tête: Journal of Francophone Studies

No abstract provided.

“Mieux Vaut Goujat Debout Qu’Empereur Enterré !” : An Examination Of The Arts Incohérents Movement And Its Place In French Artistic Canon, Ashley Holt

Tête à Tête: Journal of Francophone Studies

No abstract provided.

Elgin's "Native Tongue": A "Me Too" Universe?, Amir Barati

Tête à Tête: Journal of Francophone Studies

Suzette Haden Elgin’s novel Native Tongue (1984) provides a fascinating critique of the ideologies inscribed into patriarchal language and evokes an extremely valuable linguistic and political awareness. This article will examine the liability of the ways the novel revolts against the patriarchal society via the introduction of a gynocentric linguistic intervention. I claim, Elgin’s novel showcases an invaluable instance of how it is possible for women to revolt against the pillars of patriarchy through manipulations at the gestalt and schematic level of language and most specifically, the bodily metaphoric quality of the English. This proposed transformation of the schematic and …

Witnessing And The Gaze In Barbusse’S Hell, Rebecca Stobaugh

Tête à Tête: Journal of Francophone Studies

Stripped down to its most basic plot summary, the premise of Henri Barbusse’s 1908 novel Hell, or L’enfer, sounds like the plot of a cheap porno: a man discovers a peep hole in his hotel room and proceeds to spy on the private lives of the people next door. Indeed, the novel obsesses over the erotic; yet, this obsession is often just as unsensual as it is pleasurable, as descriptions of sex become increasingly disillusioning, and the characters, unsatisfied. Moreover, the narrator does not spy on others for a strictly sexual thrill, but because he believes seeing people …

The Sensible Body Of The Female Reader, Anoosheh Ghaderi

Tête à Tête: Journal of Francophone Studies

No abstract provided.

Women Of The Dalit Unrest: Rewriting Bodies, Reinforcing Resistance, Suddhadeep Mukherjee

Tête à Tête: Journal of Francophone Studies

The paper aims to take the scholarship on corporeal feminism and Dalit Studies forward by focusing on the Dalit woman’s body. The body is not treated as an inert surface in this paper but is considered as a transformative medium that can alter its embedded codifications and significations through transgressive performances in the face of systemic and systematized caste violence. In doing so the gendered body not only challenges to rewrite the Dalit epistemology from the vantage of resistance but also initiates a rethinking of Indian feminism. The paper begins with a discursive discussion on the importance of the gender …

The Affective Construction Of Plurality Of Nationalism And Citizenship, Aparajita Dutta

Tête à Tête: Journal of Francophone Studies

No abstract provided.

The Resisting Female Body In India, Nancy Boissel-Cormier

Tête à Tête: Journal of Francophone Studies

No abstract provided.

Imagined Locality Of A Girlhood Home: A Performative Reading Of Maxine Hong Kingston’S “White Tigers”, Jing Tan

Tête à Tête: Journal of Francophone Studies

Both the locality and the language of Sze Yup are of immense significance to Kingston, as well as to her narrator-protagonist: it is the locus of her mother’s storytelling, the land whence her mother absorbed the incredible power of “talking-story” that has been inherited by Kingston and has permeated her text, the soil whose spirit has been transplanted to her birthplace in America and whose mystery has never ceased to inspire her imagination. Likewise, the Sze Yup dialect is the language that both the writer and her narrator first learned to speak (Jaggi): she “entered school speaking no English” (Talbot …

Transgressing Boundaries Of Identity, Geography And Time In Transmutadxos And La Mucama De Omicunlé, Lucinda Smith

Tête à Tête: Journal of Francophone Studies

The literary works of Rita Indiana (1977) and Yolanda Arroyo Pizarro (1970) are recognised for exposing and challenging hegemonic ideas of identity, sexuality and power. The transgression of boundaries appears time and again in the fiction of both writers, whether these be boundaries of sexual or gender identity, desire, geography, time or even life and death. Using Rita Indiana’s novel La mucama de Omicunlé (2015) and Arroyo’s collection of short stories Transmutadxs (2016), the authors’ representations of such transgressions are the focus of this essay.

Further to addressing similar themes in their texts, both Rita Indiana and Arroyo Pizarro were …