Digital Commons Network^™

The Role Of An Educational Intervention In Addressing Parent Spectator Behaviors In Louisiana Youth Sports, Jerry F. Reynolds Ii

LSU Doctoral Dissertations

Contemporary youth sports environments present significant psychosocial challenges to the family system. Among the greatest challenges to address are spectator behaviors of parents, which in the public eye has deteriorated and is out of control. Spectator behaviors and their impact upon the sports environment and family system is the topic of investigation in this study. Within the state of Louisiana, the advent of Act 355 extends the consequences of parent behavior and presents challenges to families, referees, and sports organizations. To better understand how legislation impacts parent perceptions of their spectator behaviors, the author examined spectator behaviors parents are observing, …

A Linear-Space Data Structure For Range-Lcp Queries In Poly-Logarithmic Time, Paniz Abedin, Arnab Ganguly, Wing Kai Hon, Kotaro Matsuda, Yakov Nekrich, Kunihiko Sadakane, Rahul Shah, Sharma V. Thankachan

Faculty Publications

Let T[1,n] be a text of length n and T[i,n] be the suffix starting at position i. Also, for any two strings X and Y, let LCP(X,Y) denote their longest common prefix. The range-LCP of T w.r.t. a range [α,β], where 1≤α0 is an arbitrarily small constant. Later, Patil et al. [5] proposed another linear space structure with an improved query time of O(δlogϵ⁡δ). This poses an interesting question, whether it is possible to answer rlcp(⋅,⋅) queries in poly-logarithmic time using a linear space data structure. In this paper, we settle this question by presenting an O(n) space data structure …

Superposed Ornstein-Uhlenbeck Processes, Julius Esunge, Auguste Muhau

Journal of Stochastic Analysis

No abstract provided.

Transcriptomic Analysis Of Extracellular Rna Governed By The Endocytic Adaptor Protein Cin1 Of Cryptococcus Deneoformans, Muxing Liu, Zhengguang Zhang, Chen Ding, Tuo Wang, Ben Kelly, Ping Wang

Faculty Publications

© Copyright © 2020 Liu, Zhang, Ding, Wang, Kelly and Wang. Membrane vesicles are considered virulence cargoes as they carry capsular and melanin components whose secretory transport is critical for the virulence of the human fungal pathogen Cryptococcus species. However, other components of the vesicles and their function in the growth and virulence of the fungus remain unclear. We have previously found that the cryptococcal intersectin protein Cin1 governs a unique Cin1-Wsp1-Cdc42 endocytic pathway required for intracellular transport and virulence. Using RNA sequencing, we compared the profiles of extracellular RNA (exRNA), including microRNA (miRNA), small interference RNA (siRNA), long noncoding …

Gw190814: Gravitational Waves From The Coalescence Of A 23 Solar Mass Black Hole With A 2.6 Solar Mass Compact Object, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, A. Aich, L. Aiello, A. Ain, P. Ajith, S. Akcay, G. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Ansoldi, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda

Faculty Publications

We report the observation of a compact binary coalescence involving a 22.2-24.3 M o˙ black hole and a compact object with a mass of 2.50-2.67 M o˙ (all measurements quoted at the 90% credible level). The gravitational-wave signal, GW190814, was observed during LIGO's and Virgo's third observing run on 2019 August 14 at 21:10:39 UTC and has a signal-to-noise ratio of 25 in the three-detector network. The source was localized to 18.5 deg2 at a distance of 241 +41-41 Mpc; no electromagnetic counterpart has been confirmed to date. The source has the most unequal mass ratio yet measured with gravitational …

Von Neumann's Minimax Theorem For Continuous Quantum Games, Luigi Accardi, Andreas Boukas

Journal of Stochastic Analysis

No abstract provided.

Reconsidering The Obstetrical Dilemma: Correlations Between Head And Pelvic Size, Kelsey Catrice Fox

LSU Master's Theses

The Obstetrical Dilemma (OD) theory has become canon in biological anthropology. The OD posits that i] dystocia results from bipedal mothers and encephalized infants, ii] contrasting selection for bipedality and obstetrics hinders locomotive efficiency, and iii] the contradicting requirement of the fetus being small enough to pass through the birth canal yet being cognitively advanced enough to cling to its mother after birth. Females, theoretically, exhibit deficient gait efficiency for the sake of successful childbirth. An obstetric advantage theory has been posited where taller individuals with a larger head size have larger pelves. If the distance between the acetabulae increases …

Controllable And Scalable Engineered Soil Surrogates Utilizing Simulated Soil Organic Matter For The Study Of Environmental, Ecological, And Agricultural Processes, Arjun Pandey, Benjamin J. Haywood, Ghada Abdalla, Stephen Smith, Balamurugan Subramanian, David A. Spivak, Robert L. Cook

Faculty Publications

Copyright © 2020 American Chemical Society. An entirely new, tunable, and scalable platform (model) approach for the detailed study of important molecular processes that take place in geomacromolecular matrices, such as soils, using block copolymer materials at inorganic interfaces has been developed and applied to gain a molecular-level understanding of environmental pollutant/soil interactions. This approach provides a scalable platform with molecular-level control of the soil organic matter (SOM) chemical composition and structure, allowing one to examine proposed SOM interactions with agricultural chemicals (ACs). Accordingly, a series of engineered soil surrogates (ESSs) utilizing simulated SOM was synthesized, in which multiblock oligomers …

Mitochondrial Utilization Of Competing Fuels Is Altered In Insulin Resistant Skeletal Muscle Of Non-Obese Rats (Goto-Kakizaki), Nicola Lai, Ciarán E. Fealy, Chinna M. Kummitha, Silvia Cabras, John P. Kirwan, Charles L. Hoppel

Division of Basic Science Faculty Publications

Aim: Insulin-resistant skeletal muscle is characterized by metabolic inflexibility with associated alterations in substrate selection, mediated by peroxisome-proliferator activated receptor δ (PPARδ). Although it is established that PPARδ contributes to the alteration of energy metabolism, it is not clear whether it plays a role in mitochondrial fuel competition. While nutrient overload may impair metabolic flexibility by fuel congestion within mitochondria, in absence of obesity defects at a mitochondrial level have not yet been excluded. We sought to determine whether reduced PPARδ content in insulin-resistant rat skeletal muscle of a non-obese rat model of T2DM (Goto-Kakizaki, GK) ameliorate the inhibitory effect …

Current Practices And Infrastructure For Open Data Based Research On Occupant-Centric Design And Operation Of Buildings, Mikkel B. Kjærgaard, Omid Ardakanian, Salvatore Carlucci, Bing Dong, Steven K. Firth, Nan Gao, Gesche Margarethe Huebner, Ardeshir Mahdavi, Mohammad Saiedur Rahaman, Flora D. Salim, Fisayo Caleb Sangogboye, Jens Hjort Schwee, Dawid Wolosiuk, Yimin Zhu

Faculty Publications

Many new tools for improving the design and operation of buildings try to realize the potential of big data. In particular, data is an important element for occupant-centric design and operation as occupants’ presence and actions are affected by a high degree of uncertainty and, hence, are hard to model in general. For such research, data handling is an important challenge, and following an open science paradigm based on open data can increase efficiency and transparency of scientific work. This article reviews current practices and infrastructure for open data-driven research on occupant-centric design and operation of buildings. In particular, it …

Magic-Angle Semimetals With Chiral Symmetry, Yang Zhi Chou, Yang Zhi Chou, Yixing Fu, Justin H. Wilson, E. J. König, J. H. Pixley

Faculty Publications

We construct and solve a two-dimensional, chirally symmetric model of Dirac cones subjected to a quasiperiodic modulation. In real space, this is realized with a quasiperiodic hopping term. This hopping model, as we show, at the Dirac node energy has a rich phase diagram with a semimetal-to-metal phase transition at intermediate amplitude of the quasiperiodic modulation, and a transition to a phase with a diverging density of states (DOS) and subdiffusive transport when the quasiperiodic hopping is strongest. We further demonstrate that the semimetal-to-metal phase transition can be characterized by the multifractal structure of eigenstates in momentum space and can …

An Inverse Function Theorem Converse, Jimmie Lawson

Faculty Publications

We establish the following converse of the well-known inverse function theorem. Let g:U→V and f:V→U be inverse homeomorphisms between open subsets of Banach spaces. If g is differentiable of class Cp and f is locally Lipschitz, then the Fréchet derivative of g at each point of U is invertible and f must be differentiable of class Cp.

Effects Of Valence And Spin Of Fe In Mgsio3 Melts: Structural Insights From First-Principles Molecular Dynamics Simulations, Dipta B. Ghosh, Bijaya B. Karki

Faculty Publications

Iron (Fe) is present in terrestrial melts and at all depths inside the Earth. How Fe in its varying oxidation and spin states influences the properties of silicate melts is of critical importance to the understanding of the chemical evolution of our planet. Here, we report the results of first-principles molecular dynamics simulations of molten Fe-bearing MgSiO over a wide pressure range covering the entire mantle. Our results suggest that the structural properties of the host melt, such as the average bond length and coordination in Mg–O and Si–O do not differ much when compared with the pure melt. More …

Hamiltonian Theory Of Classical And Quantum Gauge Invariant Perturbations In Bianchi I Spacetimes, Ivan Agullo, Javier Olmedo, V. Sreenath

Faculty Publications

We derive a Hamiltonian formulation of the theory of gauge invariant, linear perturbations in anisotropic Bianchi I spacetimes, and describe how to quantize this system. The matter content is assumed to be a minimally coupled scalar field with potential V(φ). We show that a Bianchi I spacetime generically induces both anisotropies and quantum entanglement on cosmological perturbations, and provide the tools to compute the details of these features. We then apply this formalism to a scenario in which the inflationary era is preceded by an anisotropic Bianchi I phase, and discuss the potential imprints in observable quantities. The formalism developed …

Disorder In Twisted Bilayer Graphene, Justin H. Wilson, Yixing Fu, S. Das Sarma, J. H. Pixley

Faculty Publications

We develop a theory for a type of disorder in condensed matter systems arising from local twist-angle fluctuations in two strongly coupled van der Waals monolayers twisted with respect to each other to create a flat-band moiré superlattice. The paradigm of "twist-angle disorder"arises from the currently ongoing intense research activity in the physics of twisted bilayer graphene. In experimental samples of pristine twisted bilayer graphene, which are nominally free of impurities and defects, the main source of disorder is believed to arise from the unavoidable and uncontrollable nonuniformity of the twist angle across the sample. To address this physics of …

Taylor Expansions And Castell Estimates For Solutions Of Stochastic Differential Equations Driven By Rough Paths, Qi Feng, Xuejing Zhang

Journal of Stochastic Analysis

No abstract provided.

Cultural Heritage And User Interface Design, Narges Tavakoli

LSU Master's Theses

This study centers around localizing the user interface and experience design of digital products considering the culture of the audience and their visual heritage. Even though it seems the internet has made the distance between developing and advanced countries less than before, there are still fundamental differences between people’s beliefs and expectations. As a graphic designer who is based in The United States and is from Iran, I noticed the digital products (web, mobile applications) produced in Iran disregard the Iranian’s specific needs and emulate western patterns. So, I researched the dissimilarities between the two countries by using Greet Hofstede’s …

Seasonal Transport Of Dissolved Inorganic Carbon And Total Alkalinity Across The Louisiana Shelf, Michelle M. Anderson

LSU Master's Theses

Rivers and wetlands are a major source of terrestrial derived carbon for coastal ocean margins. Unfortunately, Louisiana’s wetlands are threatened by ongoing high rates of erosion, deterioration, and unprecedented rates of river water discharge that changes seasonally, leading to a net loss of terrestrial carbon into the northern Gulf of Mexico (nGOM). There exists a current lack of understanding about the distribution of dissolved inorganic carbon (DIC) and total alkalinity (TAlk) within the shallowest regions of the Louisiana shelf. Even less is known about how the transport of DIC alters seasonally with changes in river outflow and shelf currents. Quantifying …

Estimating The Onset And Extent Of Dieback Of Phragmites Australis Using The Normalized Difference Vegetation Index And Remotely Sensed Land Cover Classifications, Aimee M. Beaudette

LSU Master's Theses

Phragmites australis is cosmopolitan plant species with an invasive variety present throughout most of North America. In the Balize Delta, Louisiana, USA, P. australis plays an important role in combatting subsidence, maintaining navigation channels, and protecting interior fish and wildlife habitat from waves and storm surge. In 2016 a dieback of P. australis was reported by wetland managers, coinciding with the appearance of an invasive Asian scale insect (Nipponaclerda biwakoensis), though the specific cause is still unknown. Two previous efforts attempted to identify the onset of dieback conditions met with limited success. Using Landsat images from 1985 to …

Microplastics In Mississippi River Fishes: A Watershed Approach, Ahmed Gad

LSU Master's Theses

Microplastics are plastic particles less than 5mm that come from different sources, such as industrial products, cosmetics, and the breakdown of the macroplastics. Microplastics derive from terrestrial sources but concentrate in flowing freshwaters where they may enter aquatic food webs. The northern Gulf of Mexico has shown very high microplastic concentrations, which are assumed to be sourced from the Mississippi River and its watershed. This study seeks to study microplastics in fish in the Mississippi River and the Gulf of Mexico. Fish stomachs and intestines from fish underwent chemical digestion, filtration, and microplastics identification and enumeration through FT-IR spectrometry. Chapter …

Coastal Taxodium Distichum Growth Responses To Marine Influences And Stand Density, Stephanie Moothart

LSU Master's Theses

Ecological processes controlling transition areas of coastal wetlands between marshes (not forested) and swamps (forested) are poorly understood, despite important ecosystem services provided and strong interest in managing for ecosystem structure and function. The objective of this work was to identify how soil chemistry and stand density control individual-tree growth of the important coastal species baldcypress (Taxodium distichum (L.) Rich.) and pondcypress (Taxodium distichum var. imbricarium (Nutt.) Croom) along a coastal salinity gradient. Tree cores, soil samples, and stand density measurements were collected for sixty cypress trees at the coastal Joyce Wildlife Management Area, Louisiana, which is a …

Future Colors, Jessi Maddocks

LSU Master's Theses

Future Colors considers everyday personal stories and those held in functional objects as they leave the studio to find new homes. This work considers daily transitional moments, everyday occurrences that present an opportunity to witness shifts from one state of being to another. Utilizing digital fabrication tools and handworking techniques, Future Colors brings a synthesis of design methods to create this exhibition of functional vessels and porcelain tiles.

Techno-Economic Analysis Of Floating Offshore Airborne Wind Energy Systems In The Gulf Of Mexico, Alexandria Savannah Leake

LSU Master's Theses

Techno-economic analyses play an important role in determining locations for conventional wind turbine installations. This method is utilized to assess energy production potential for a new type of wind technology, known as airborne wind energy (AWE). The first objective of the present thesis was to determine overall investment potential of a utility-scale floating offshore airborne wind farm, testing five floating platform design concepts. The second objective was to determine whether the wind resources (100-1500 m) are ideal to support AWE systems in the Gulf of Mexico. Specifically, a hypothetical benchmark wind farm was developed 15 km offshore from Venice, Louisiana. …

A Comprehensive Examination Of Clinical Cutoff Scores For The Inventory Of Callous-Unemotional Traits (Icu), Emily C. Kemp

LSU Master's Theses

Youth with elevated callous-unemotional (CU) traits represent a clinically important subgroup of youth who display particularly severe conduct problems and antisocial behavior and thusly impose great costs to themselves, other individuals, and society. The recent addition of the specifier for CU traits, “with Limited Prosocial Emotions (LPE),” to major classification systems has prompted the need for comprehensive and valid assessment tools that aid in the identification of these traits. One such tool is a multi-informant questionnaire, the Inventory of Callous-Unemotional Traits (ICU). However, a major limitation of this measure is a lack of well-validated cutoff scores. With this, the present …

A Case Study On Alternative Spring Break: Supporting Black Women At An Hbcu, Aeryel Williams

LSU Doctoral Dissertations

Alternative Spring Break (ASB) is a college-based travel program in which students spend their traditional spring break vacation traveling to a new domestic or international city to complete a service-learning project such as community restoration in New Orleans after Hurricane Katrina. As a result of participating in Alternative Spring Break, students gain invaluable experiences and transferable skills that can be applied to their academic and career goals. In this dissertation, the specific transferable skill explored is emotional intelligence.

The purpose of this dissertation is to illuminate the lived experiences of Black women who have participated in a college-based travel program …

Second Sonata For Piano And Violin In F Minor Op. 6 By George Enesco A Transcription For Cello, Andrian Harabaru

LSU Doctoral Dissertations

George Enesco (1881-1955) was one of the most important musical personalities, fascinating and diverse of the XX Century. Acclaimed as a composer, appreciated as a conductor, and considered an example of the highest order of violin playing, he performed throughout Europe, Russia, and North America. His compositional legacy succeeded in incorporating a wide variety of genres: chamber music for strings, wind and voice, instrumental solo concertos, symphonies, and operas, Oedipe being one of the most acclaimed. The purpose of this paper is to explain the process of transcribing Enesco’s Violin and Piano Sonata No. 2 in F minor Op. 6 …

Design, Synthesis And Characterization Of New Superconductors, Xin Gui

LSU Doctoral Dissertations

Design and synthesis of new materials are a long-standing goal for chemistry, physics and material science, especially those with intriguing properties such as magnetism and superconductivity. With consideration and incorporation of the highlights in some existing design rules, we successfully designed and discovered the superconductivity in BaPt₂Bi₂, SrSnP and Yb_xPt₅P.

With the help of valence electron counting method, we synthesized a new intermetallic compound, BaIr₂Ge₂, which was then found to be non-superconducting above 1.8 K. Thus, we considered both valence electron counting and chemical pressure adjustment to reach …

Development Of Water Coning Control Design Metrics In Naturally Fractured Reservoirs, Samir Prasun

LSU Doctoral Dissertations

Naturally fractured reservoirs (NFRs) with bottom-water are known for their instant water breakthrough and severe water coning that reduces oil recovery. This is because water channels through the highly permeable fractures easily connecting the well to the aquifer bypassing the oil contained in the matrix. Remedial techniques such as producing below critical-oil rate, optimizing the well spacing and installing the downhole water sink (DWS)/ downhole water loop (DWL) technology, have already been successfully tested in single-porosity reservoirs (SPR). However, applicability of these techniques in NFRs are unknown since only a few studies have been performed on their feasibility in NFRs, …

Opto-Optical Modulator (Oom) For Extreme Ultraviolet Pulses, A. Olofsson, E. R. Simpson, M. Labeye, S. Camp, N. Ibrakovic, S. Bengtsson, K. J. Schafer, M. B. Gaarde, J. Mauritsson

Faculty Publications

There is a profound, almost symbiotic relation between electrons and photons. When light interacts with matter the electrons in the material will start to move and oscillate. When a charged particle, such as an electron, oscillates it will act as a dipole and emit light. We utilize this symbiotic relation and extend the control of light to the extreme ultraviolet (XUV) region using the newly developed XUV opto-optical modulator.

Assessing The Location Of Ionic And Molecular Solutes In A Molecularly Heterogeneous And Nonionic Deep Eutectic Solvent, Xiaobing Chen, Yaowen Cui, Habtom B. Gobeze, Daniel G. Kuroda

Faculty Publications

Copyright © 2020 American Chemical Society. Deep eutectic solvents (DES) are emerging sustainable designer solvents viewed as greener and better alternatives to ionic liquids. Nonionic DESs possess unique properties such as viscosity and hydrophobicity that make them desirable in microextraction applications such as oil-spill remediation. This work builds upon a nonionic DES, NMA-LA DES, previously designed by our group. The NMA-LA DES presents a rich nanoscopic morphology that could be used to allocate solutes of different polarities. In this work, the possibility of solvating different solutes within the nanoscopically heterogeneous molecular structure of the NMA-LA DES is investigated using ionic …