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Setting Up Shop Down South: Gay Visibility And Identity Formation At A New Orleans Bookstore, Katelyn N. Spencer Nov 2022

Setting Up Shop Down South: Gay Visibility And Identity Formation At A New Orleans Bookstore, Katelyn N. Spencer

LSU Master's Theses

Looking specifically at the South’s first gay bookstore, Faubourg Marigny (FM) Books, this thesis will connect the existence of gay literature and space as impetuses of gay community identity within New Orleans. It will use the political, social, and cultural histories of the 1970s through the 2010s to contextualize the gay bookstore as a microcosm of its time and location. In doing so, it will examine how FM Books’ New Orleans location affected its function and its relationship with its community. It will also analyze how the bookstore fit into the city’s history of social tradition and aversion to flagrant …


A Performance Guide To Michael Patterson's "People Of The Land" For Baritone And Piano, Thaddeus Harm Ennen Nov 2022

A Performance Guide To Michael Patterson's "People Of The Land" For Baritone And Piano, Thaddeus Harm Ennen

LSU Doctoral Dissertations

The purpose of this document is to supply a comprehensive performer’s guide to Iowa composer, Dr. Michael Patterson’s, People of the Land, an eight song, song cycle for baritone and piano, set to poetry by Iowa poet James Hearst. This song cycle was personally commissioned to fulfill a need in the American song cycle literature on the topic of farming and more specifically Iowa farmers. The poetry of James Hearst, farmer and poet, has never been previously set in a song cycle.

People of the Land tells the story of an Iowa farmer from the beginning to end of …


Shaky Ground: Educators At The Intersection Of Gender Diversity And Early Childhood Environments, Elizabeth Gragg Elizardi Nov 2022

Shaky Ground: Educators At The Intersection Of Gender Diversity And Early Childhood Environments, Elizabeth Gragg Elizardi

LSU Doctoral Dissertations

This dissertation examines the hidden curriculum of gender socialization in early childhood classrooms. Purposes of this study included exploring how teachers’ beliefs about gender are enacted in activities, roles, and relationships with children to inform and recommend future directions for gender conscious education and pedagogies. This dissertation includes an assessment of participants’ gender schema, an analysis of participant interviews and focus groups, field notes from classroom observations and artifact collection. This study draws on Brofenbrenner’s (2005) bioecological theory of human development, positioning teachers as a primary engine of development in a child’s life. Cognitive-developmental theories are forwarded to explain gender …


“You Can’T Wash Your Hands In A House Without Running Water”: Pandemic Precautionary Behaviors In The Wake Of Hurricane Laura, Cécile Girard Nov 2022

“You Can’T Wash Your Hands In A House Without Running Water”: Pandemic Precautionary Behaviors In The Wake Of Hurricane Laura, Cécile Girard

Honors Capstones

No abstract provided.


Narcissism And Risk-Taking For Others, Tyler B. Cowley Oct 2022

Narcissism And Risk-Taking For Others, Tyler B. Cowley

LSU Master's Theses

While prior findings demonstrate that narcissists are excessively risk-seeking for themselves, research does not yet understand if their risk-seeking behaviors extend to others as well. This paper examines the role of narcissism in risk-taking on behalf of others. I hypothesize that narcissists will take more risks when deciding for others because they lack empathy and perspective taking. Therefore, narcissists are more likely to take risks based on their personal preferences, rather than the recipient’s desires. To test my hypotheses, participants completed the Balloon Analogue Risk Task (BART) for themselves, another individual, and an anonymous individual, followed by completing the Narcissistic …


Investigating The Relational Element Of Trust In Teacher-Principal Relationships: An Autoethnographic Case Study, Angela Bradley Oct 2022

Investigating The Relational Element Of Trust In Teacher-Principal Relationships: An Autoethnographic Case Study, Angela Bradley

LSU Doctoral Dissertations

This autoethnographic case study was designed to investigate the relational aspect of trust, a characteristic of servant leadership, in the teacher-principal relationship. This trusting bond is an often overlooked, foundational element of a school’s success. I examined the role that trust plays in enhancing a school’s culture and how trust is established and maintained among one principal and teachers under my supervision. In addition, as researcher, I sought to uncover specific indicators that trust was present on a school campus. Finally, I sought to examine trust’s effects on collaboration and organizational commitment.

Through weekly reflections, I sought to examine my …


Hydrogeologic Investigation Of A Covered Karst Terrain, Joseph Peter Honings Oct 2022

Hydrogeologic Investigation Of A Covered Karst Terrain, Joseph Peter Honings

LSU Doctoral Dissertations

Increasing demand for water for agricultural use within the Dougherty Plain of the Southeastern United States has depleted surface water bodies. In karstic landscapes, such as the Dougherty Plain in southwest Georgia where the linkages between surface and ground waters are close, there is a need to understand the physical characteristics of the subsurface that allow these close linkages. Having a better understanding of the subsurface characteristics will aid numerical modeling efforts that underpin policy decisions and economic analyses. Two common features on this karstic landscape are draws and geographically isolated wetlands. Using LiDAR, aerial imagery, and ground-penetrating radar, this …


Verb Diversities Of Children With And Without Developmental Language Disorder: A Study Of Language Samples, Caitlyn J. Kearns Oct 2022

Verb Diversities Of Children With And Without Developmental Language Disorder: A Study Of Language Samples, Caitlyn J. Kearns

LSU Master's Theses

Background: There have been numerous studies that have researched word learning in children with Developmental Language Disorder (DLD). These studies have found that children with DLD present with higher vocabulary deficits compared to their typically developing (TD) peers. Many of these studies’ results suggest that verb learning is the most difficult word type to comprehend in early language development for both TD children and children with DLD. This current study aims to examine verb use in children with and without DLD and to specifically examine their usage of GAP verbs. Methods: Participants included 36 children, 18 TD and 18 DLD …


Device Free Indoor Localization Of Human Target Using Wifi Fingerprinting, Prasanga Neupane Oct 2022

Device Free Indoor Localization Of Human Target Using Wifi Fingerprinting, Prasanga Neupane

LSU Master's Theses

Indoor localization of human objects has many important applications nowadays. Proposed here is a new device free approach where all the transceiver devices are fixed in an indoor environment so that the human target doesn't need to carry any transceiver device with them. This work proposes radio-frequency fingerprinting for the localization of human targets which makes this even more convenient as radio-frequency wireless signals can be easily acquired using an existing wireless network in an indoor environment. This work explores different avenues for optimal and effective placement of transmitter devices for better localization. In this work, an experimental environment is …


The Risks Posed By Mosquito Ultra-Low Volume Applications To Procambarus Clarkii Production, Timothy Mcnamara Oct 2022

The Risks Posed By Mosquito Ultra-Low Volume Applications To Procambarus Clarkii Production, Timothy Mcnamara

LSU Doctoral Dissertations

Mosquito abatement has received much scrutiny due to concerns about the impacts of control applications on non-target organisms. In Louisiana, a great deal of this concern has come from crawfish farmers claiming mosquito abatement applications have damaged crawfish production. To determine which mosquito abatement practices and products pose a risk to crawfish production, we conducted a series of studies examining mosquito abatement practices in the vicinity of crawfish production fields and the impacts of common mosquito abatement product exposure on crawfish health and production. We found that mosquito ULV applications are the most likely to result in exposure to crawfish …


Physical To Cyber: A Case Study Of The Print And Digital Literacy Of Burgeoning Older Adult Learners, Laura Elizabeth Williams Oct 2022

Physical To Cyber: A Case Study Of The Print And Digital Literacy Of Burgeoning Older Adult Learners, Laura Elizabeth Williams

LSU Doctoral Dissertations

This intrinsic single case study explored the ways in which two older adult burgeoning literacy learners in a capital city in the U.S. Gulf South utilized the skills of print literacy and digital literacy both together and apart. This study was an investigation of print and digital literacy, individually and combined, in order to examine the way older adult burgeoning literacy learners used one kind of literacy (print) to develop the other (digital). Using semi-structured interviews, observations, and literacy journals, participants’ perceptions were explored. Findings included that fully literate older adults used their literacy to enact and maintain social connections, …


A Saturated Map Of Common Genetic Variants Associated With Human Height, Loïc Yengo, Sailaja Vedantam, Eirini Marouli, Julia Sidorenko, Eric Bartell, Saori Sakaue, Marielisa Graff, Anders U. Eliasen, Yunxuan Jiang, Sridharan Raghavan, Jenkai Miao, Joshua D. Arias, Sarah E. Graham, Ronen E. Mukamel, Cassandra N. Spracklen, Xianyong Yin, Shyh Huei Chen, Teresa Ferreira, Heather H. Highland, Yingjie Ji, Tugce Karaderi, Kuang Lin, Kreete Lüll, Deborah E. Malden, Carolina Medina-Gomez, Moara Machado, Amy Moore, Sina Rüeger, Xueling Sim, Scott Vrieze, Tarunveer S. Ahluwalia, Masato Akiyama, Matthew A. Allison Oct 2022

A Saturated Map Of Common Genetic Variants Associated With Human Height, Loïc Yengo, Sailaja Vedantam, Eirini Marouli, Julia Sidorenko, Eric Bartell, Saori Sakaue, Marielisa Graff, Anders U. Eliasen, Yunxuan Jiang, Sridharan Raghavan, Jenkai Miao, Joshua D. Arias, Sarah E. Graham, Ronen E. Mukamel, Cassandra N. Spracklen, Xianyong Yin, Shyh Huei Chen, Teresa Ferreira, Heather H. Highland, Yingjie Ji, Tugce Karaderi, Kuang Lin, Kreete Lüll, Deborah E. Malden, Carolina Medina-Gomez, Moara Machado, Amy Moore, Sina Rüeger, Xueling Sim, Scott Vrieze, Tarunveer S. Ahluwalia, Masato Akiyama, Matthew A. Allison

Faculty Publications

Common single-nucleotide polymorphisms (SNPs) are predicted to collectively explain 40–50% of phenotypic variation in human height, but identifying the specific variants and associated regions requires huge sample sizes1. Here, using data from a genome-wide association study of 5.4 million individuals of diverse ancestries, we show that 12,111 independent SNPs that are significantly associated with height account for nearly all of the common SNP-based heritability. These SNPs are clustered within 7,209 non-overlapping genomic segments with a mean size of around 90 kb, covering about 21% of the genome. The density of independent associations varies across the genome and the regions of …


Understanding Motivations Among Sustained Cooperative Extension Partners For Obesity Prevention In Rural Louisiana, Catherine R. Losavio Oct 2022

Understanding Motivations Among Sustained Cooperative Extension Partners For Obesity Prevention In Rural Louisiana, Catherine R. Losavio

LSU Master's Theses

Louisiana consistently has one of the highest rates of obesity in the nation with higher concentrations of obesity in many rural parishes (i.e., counties). Due to over a century of visibility and engagement in rural communities, Cooperative Extension (Extension) is uniquely poised to reach remote rural communities disproportionately impacted by obesity. As Extension increases its use of community coalitions and implements its new National Framework for Health Equity and Well-Being, understanding motivations and communication preferences among long-term rural coalition partners for obesity prevention and health promotion has become essential for duplicating successful local-level policy, system, and environmental (PSE) changes. This …


Overcoming Gifted Student Underachievement Through Teacher Best Practices, Samantha Simmons Webre Oct 2022

Overcoming Gifted Student Underachievement Through Teacher Best Practices, Samantha Simmons Webre

LSU Doctoral Dissertations

The goal of this study is to collect the best practices being utilized by gifted teachers affecting change amongst their gifted underachieving students. Data collected will explore trends deemed significant among the successful best practices being utilized by academically gifted certified teachers.

The researcher will administer surveys, conduct interviews, and classroom observations to collect data from a sample of participants who are currently employed as academically gifted certified teachers. This study will focus on these academically gifted certified teacher’s definitions and recognition of underachievement, identified causes for underachievement, best practices employed to re-engage underachieving students, as well as perceptions of …


Experience That Works: An Investigation Uncovering Essential Elements Of Field Experiences And Internships Within Principal Preparation Programs That Significantly Impact And Contribute To Principal Effectiveness, Nathan Wayne Hite Oct 2022

Experience That Works: An Investigation Uncovering Essential Elements Of Field Experiences And Internships Within Principal Preparation Programs That Significantly Impact And Contribute To Principal Effectiveness, Nathan Wayne Hite

LSU Doctoral Dissertations

This study applied situational leadership and transformational leadership theories to discern essential elements of principal preparation program field experiences and internships that contributed most to principal effectiveness. Identifying critical components of principal preparation field experiences and internships were imperative to ensure principal effectiveness within the ever-changing landscape of education. The objective of this study was to discover essential components of field experiences and internships provided by principal preparation programs that contributed most to principal effectiveness, increasing the likelihood public school districts hired principal candidates who were equipped with the skills necessary to step into the position with minimal on-the-job training. …


"A Sort Of Pain, Which Is New": Unresolved Grief In British Romantic Literature, Eta Farmacelia Nurulhady Oct 2022

"A Sort Of Pain, Which Is New": Unresolved Grief In British Romantic Literature, Eta Farmacelia Nurulhady

LSU Doctoral Dissertations

This dissertation examines the cultural phenomenon of mourning in relation to British Romantic Literature. In chapters on the work of William Wordsworth, Jane Austen, Felicia Hemans, and Charles Lamb, it argues that the Romantic period, as a time of increased mobility due to three revolutions, wars, and the expansion of empire, was a moment when unresolved grief became a common experience. Using the psychologist Pauline Boss’s concept of “ambiguous loss” as a lens for a new reading of British Romantic writing, and distinguishing this concept from the modern concept of “nostalgia,” this dissertation analyzes poetry, novels, and essays written by …


Simulation Modeling Of A High-Throughput Oyster Cryopreservation Pathway, Sarah Bodenstein, Isabelina Nahmens, Terrence R. Tiersch Oct 2022

Simulation Modeling Of A High-Throughput Oyster Cryopreservation Pathway, Sarah Bodenstein, Isabelina Nahmens, Terrence R. Tiersch

Faculty Publications

The genetic resources of oysters in Louisiana and the Gulf of Mexico are threatened due to high unexplained oyster mortality. Germplasm repositories are collections of cryopreserved genetic material stored alongside associated information that are used to protect genetics resources and facilitate breeding programs in agricultural industries. Therefore, there is great need for oyster repositories. Development of repositories has been slow despite research on high-Throughput cryopreservation protocols because of logistical complexities. The goal of this study was to begin to address the gap between cryopreservation research and repository development in oyster aquaculture by modeling a cryopreservation protocol to understand and improve …


Evaluation Of Noise Regression Techniques In Resting-State Fmri Studies Using Data Of 434 Older Adults, Norman Scheel, Jeffrey N. Keller, Ellen F. Binder, Eric D. Vidoni, Jeffrey M. Burns, Binu P. Thomas, Ann M. Stowe, Linda S. Hynan, Diana R. Kerwin, Wanpen Vongpatanasin, Heidi Rossetti, C. Munro Cullum, Rong Zhang, David C. Zhu Oct 2022

Evaluation Of Noise Regression Techniques In Resting-State Fmri Studies Using Data Of 434 Older Adults, Norman Scheel, Jeffrey N. Keller, Ellen F. Binder, Eric D. Vidoni, Jeffrey M. Burns, Binu P. Thomas, Ann M. Stowe, Linda S. Hynan, Diana R. Kerwin, Wanpen Vongpatanasin, Heidi Rossetti, C. Munro Cullum, Rong Zhang, David C. Zhu

Clinical Research Faculty Publications

Subject motion is a well-known confound in resting-state functional MRI (rs-fMRI) and the analysis of functional connectivity. Consequently, several clean-up strategies have been established to minimize the impact of subject motion. Physiological signals in response to cardiac activity and respiration are also known to alter the apparent rs-fMRI connectivity. Comprehensive comparisons of common noise regression techniques showed that the “Independent Component Analysis based strategy for Automatic Removal of Motion Artifacts” (ICA-AROMA) was a preferred pre-processing technique for teenagers and adults. However, motion and physiological noise characteristics may differ substantially for older adults. Here, we present a comprehensive comparison of noise-regression …


Household Salt Production By The Late Classic Maya: Underwater Excavations At Ta'ab Nuk Na, Heather Mckillop, E. Cory Sills Oct 2022

Household Salt Production By The Late Classic Maya: Underwater Excavations At Ta'ab Nuk Na, Heather Mckillop, E. Cory Sills

Faculty Publications

Salt is an essential commodity; archaeological remains around the world attest to the importance of its production, exchange and consumption. Often located in coastal locations, many production sites were submerged by rising seas, including the Paynes Creek Salt Works on the southern Belize coast. Survey and excavation of these sites has identified 'kitchens' for brine boiling, as well as Terminal Classic residential structures at Ek Way Nal. The authors report the discovery of an earlier residential building alongside salt kitchens at the nearby site of Ta'ab Nuk Na. This finding indicates that surplus household production began during the Late Classic, …


Identity Composition: A Qualitative Study Of Community College English Composition And Lgbtq-Inclusive Pedagogical Practices, Lucas Michel Gassen Oct 2022

Identity Composition: A Qualitative Study Of Community College English Composition And Lgbtq-Inclusive Pedagogical Practices, Lucas Michel Gassen

LSU Doctoral Dissertations

This research investigates the identity-based practices and experiences of English composition instructors who teach at community colleges and assesses the extent to which LGBTQ-inclusive pedagogical approaches are undertaken to meet the needs of sexual and gender minority students. The participant pool was comprised of community college instructors within the Louisiana Community and Technical College System (LCTCS) who have taught English composition courses within the past five years. This study aims to answer the following research questions: 1. In what ways and to what extent is identity-based instructional content incorporated in community college English composition courses? 2. In what ways and …


Investigating The Theoretical Orientations Of Select Louisiana Preservice Teachers Regarding Teaching Reading: A Mixed-Methods Study, Megan Jenny Oct 2022

Investigating The Theoretical Orientations Of Select Louisiana Preservice Teachers Regarding Teaching Reading: A Mixed-Methods Study, Megan Jenny

LSU Doctoral Dissertations

Teacher quality is one of the most significant factors contributing to student success, and Teacher Preparation Programs (TPPs) are traditionally responsible for teaching preservice teachers how to teach reading. Effective reading instruction is responsive, complex, and equitable. Acknowledgement of a disconnect between preparation programming and critical teacher knowledge for teachers of reading indicated a need for this exploratory mixed-methods study. The purpose of the current study, grounded by the theoretical framework of Sociocultural Theory, was to investigate what a select group of 21 preservice grades 1-3 elementary teachers were taught about teaching reading, preservice teachers’ theoretical orientations for teaching reading, …


Are Teachers Prepared For Writing? Insight On The Training And Development Of Teachers For Writing Instruction In K-2 Classrooms, Denise Shillingsburg Rueter Oct 2022

Are Teachers Prepared For Writing? Insight On The Training And Development Of Teachers For Writing Instruction In K-2 Classrooms, Denise Shillingsburg Rueter

LSU Doctoral Dissertations

This multiple case study examined the degree to which pre-service teachers were prepared to teach writing and how these skills were further developed in the beginning years of teaching to ensure students were receiving foundational literacy skills to be successful in both reading and writing. The setting for this study took place in an urban charter school and a suburban traditional public school in southeastern Louisiana. The participants for this study included two university instructors of teacher preparation programs who taught literacy methods courses. Also included were four K-2 classroom teachers, one kindergarten teacher, one second-grade teacher, and two first-grade …


Case Study Of The Impact Of Teacher Efficacy On Select Pk-3 School Faculty In A South Louisiana School: A Perceptual Investigation, Tara L. Alfred-Pellerin Oct 2022

Case Study Of The Impact Of Teacher Efficacy On Select Pk-3 School Faculty In A South Louisiana School: A Perceptual Investigation, Tara L. Alfred-Pellerin

LSU Doctoral Dissertations

This single case study explored the perceptions, feelings, and ideas of a select group of PK-3 certified teachers in a small, south Louisiana elementary school. As educators, perceptions and opinions often go unrecognized within the central school board and in the district. In order for teachers to be successful, it is imperative they are equipped with professional development and opportunities for collaboration in order to increase their self-efficacy to become more invested. This study focused on steps to increase self-efficacy, the importance of teacher collaboration, and professional development within an elementary school. It was grounded by theoretical frameworks of self-efficacy …


Of Language And Thought: American Political Discourse, Normative Reason, And Essentially Contested Concepts, Riley Clare Valentine Oct 2022

Of Language And Thought: American Political Discourse, Normative Reason, And Essentially Contested Concepts, Riley Clare Valentine

LSU Doctoral Dissertations

This dissertation analyzes progressive liberalism and neoliberalism as forms of normative reason that redefine specific political concepts, which are central to American liberalism – equality, liberty, the role of the State, and the pursuit of happiness. I contend that language is an important expression of normative reason. Language is how political reason and the norms accompanying it are expressed. I move through Presidents Franklin Delano Roosevelt to Barack Obama, exploring shifts in language and interpretations of political concepts through progressive liberal and neoliberal forms of normative reason. I argue that a tension emerges between progressive liberalism and neoliberalism, and a …


Wave-Front Reconstruction Via Single-Pixel Homodyne Imaging, Savannah L. Cuozzo, Charris Gabaldon, Pratik J. Barge, Ziqi Niu, Hwang Lee, Lior Cohen, Irina Novikova, Eugeniy E. Mikhailov Oct 2022

Wave-Front Reconstruction Via Single-Pixel Homodyne Imaging, Savannah L. Cuozzo, Charris Gabaldon, Pratik J. Barge, Ziqi Niu, Hwang Lee, Lior Cohen, Irina Novikova, Eugeniy E. Mikhailov

Faculty Publications

We combine single-pixel imaging and homodyne detection to perform full object recovery (phase and amplitude). Our method does not require any prior information about the object or the illuminating fields. As a demonstration, we reconstruct the optical properties of several semi-transparent objects and find that the reconstructed complex transmission has a phase precision of 0.02 radians and a relative amplitude precision of 0.01.


Fashion Or Function: Examining Consumers' Perceived Values Of Mass-Customized Menswear Via A Content Mining Approach, Yuli Liang, Snigdha Rangineni, Chuanlan Liu Oct 2022

Fashion Or Function: Examining Consumers' Perceived Values Of Mass-Customized Menswear Via A Content Mining Approach, Yuli Liang, Snigdha Rangineni, Chuanlan Liu

Faculty Publications

Mass customization has been used in various clothing products including T-shirts, dress shirts, jeans, sports shoes, accessories, etc. However, even though the concept of mass customization has been accepted among scholars and business practitioners, and the application of mass customization has been practiced in the fashion industry for more than two decades, the acceptance among ultimate consumers and the market of MC in the apparel industry has not taken off yet. To this end, this study intends to fill the identified gap through a content mining exploratory qualitative study using customer value theory to evaluate individual consumers' actual customization experiences. …


Utilizing Genomics And Historical Data To Optimize Gene Pools For New Breeding Programs: A Case Study In Winter Wheat, Carolina Ballén-Taborda, Jeanette Lyerly, Jared Smith, Kimberly Howell, Gina Brown-Guedira, Md Ali Babar, Stephen A. Harrison, Richard E. Mason, Mohamed Mergoum, J. Paul Murphy, Russell Sutton, Carl A. Griffey, Richard E. Boyles Oct 2022

Utilizing Genomics And Historical Data To Optimize Gene Pools For New Breeding Programs: A Case Study In Winter Wheat, Carolina Ballén-Taborda, Jeanette Lyerly, Jared Smith, Kimberly Howell, Gina Brown-Guedira, Md Ali Babar, Stephen A. Harrison, Richard E. Mason, Mohamed Mergoum, J. Paul Murphy, Russell Sutton, Carl A. Griffey, Richard E. Boyles

Faculty Publications

With the rapid generation and preservation of both genomic and phenotypic information for many genotypes within crops and across locations, emerging breeding programs have a valuable opportunity to leverage these resources to 1) establish the most appropriate genetic foundation at program inception and 2) implement robust genomic prediction platforms that can effectively select future breeding lines. Integrating genomics-enabled1 breeding into cultivar development can save costs and allow resources to be reallocated towards advanced (i.e., later) stages of field evaluation, which can facilitate an increased number of testing locations and replicates within locations. In this context, a reestablished winter wheat breeding …


Low Levels Of Hybridization Between Domestic And Wild Mallards Wintering In The Lower Mississippi Flyway, J. Brian Davis, Diana C. Outlaw, Kevin M. Ringelman, Richard M. Kaminski, Philip Lavretsky Oct 2022

Low Levels Of Hybridization Between Domestic And Wild Mallards Wintering In The Lower Mississippi Flyway, J. Brian Davis, Diana C. Outlaw, Kevin M. Ringelman, Richard M. Kaminski, Philip Lavretsky

Faculty Publications

The Mallard (Anas platyrhynchos) duck is a ubiquitous and socio-economically important game bird in North America. Despite their generally abundant midcontinent population, Mallards in eastern North America are declining, which may be partially explained by extensive hybridization with human-released domestically derived game-farm Mallards. We investigated the genetic composition of Mallards in the middle and lower Mississippi flyway, key wintering regions for the species. We found that nearly 30% of wild Mallards carried mitochondrial (mtDNA) haplotypes derived from domestic Mallards present in North America, indicating that the individuals had female game-farm Mallard lineage in their past; however, nuclear results identified only …


An Automated Pipeline For Scattered Light Noise Characterization, Stefano Bianchi, Alessandro Longo, Guillermo Valdes, Gabriela González, Wolfango Plastino Oct 2022

An Automated Pipeline For Scattered Light Noise Characterization, Stefano Bianchi, Alessandro Longo, Guillermo Valdes, Gabriela González, Wolfango Plastino

Faculty Publications

Scattered light noise (or scattering) affects the sensitivity of gravitational wave detectors in their detection frequency band. The mitigation of such nonlinear and nonstationary noise can be carried out experimentally and employing data analysis techniques, e.g., applying adaptive algorithms to the data affected by noise. We present gwas , a fully automated pipeline based on the time-varying filter empirical mode decomposition (tvf-EMD) algorithm, to identify, characterize, and monitor objects inducing scattering to the gravitational wave detector’s output. The tvf-EMD algorithm is suitable for decomposing signals with time-dependent frequency, such as scattering. The pipeline application to LIGO Livingston data shows that …


Optimizing Self-Pollinated Crop Breeding Employing Genomic Selection: From Schemes To Updating Training Sets, Felipe Sabadin, Julio César Dovale, John Damien Platten, Roberto Fritsche-Neto Oct 2022

Optimizing Self-Pollinated Crop Breeding Employing Genomic Selection: From Schemes To Updating Training Sets, Felipe Sabadin, Julio César Dovale, John Damien Platten, Roberto Fritsche-Neto

Faculty Publications

Long-term breeding schemes using genomic selection (GS) can boost the response to selection per year. Although several studies have shown that GS delivers a higher response to selection, only a few analyze which stage GS produces better results and how to update the training population to maintain prediction accuracy. We used stochastic simulation to compare five GS breeding schemes in a self-pollinated long-term breeding program. Also, we evaluated four strategies, using distinct methods and sizes, to update the training set. Finally, regarding breeding schemes, we proposed a new approach using GS to select the best individuals in each F2 progeny, …