Digital Commons Network^™

F22rs Sgb No. 12 (Absence Policy), Angel Puder, Emma Bruney

Student Senate Enrolled Legislation

To Amend Title 2, Chapter 3, Sections 207, 209, 210, and 211 to change the attendance policy

F22rs Sgb No. 13 (Vacancy Policy), Olivia Devall

Student Senate Enrolled Legislation

A Bill to amend Title II of the Student Government Code

F22rs Sgb No. 14 (Cc Vacancy Policy), Olivia Devall

Student Senate Enrolled Legislation

To amend Title V Section 203-205 of the Student Government code

F22rs Sgb No. 23 (Exec Code Of Conduct), Devin Meche

Student Senate Enrolled Legislation

To Amend the Student Government Code

F22rs Sgb No. 16 (Lead Author's Rights), Colin Raby, Cooper Ferguson, Landon Zeringue

Student Senate Enrolled Legislation

To Amend Title 2, Chapter 7, Section 606: Consideration of Legislation to change Presentation Rights of Lead Authors

F22rs Sgb No. 25 (Amend Election Code), Olivia Devall

Student Senate Enrolled Legislation

A Bill to amend Title VI Chapter 5 of the Student Government Code of Louisiana State University

F22rs Sgb No. 26 (Election Code Amendment), Olivia Devall

Student Senate Enrolled Legislation

A Bill to amend Title VI Chapter 3 Section 212 of the Student Government Code of Louisiana State University

F22rs Sgcr No. 2-7, 10-49, 51-85 (Appointments And Vacancies), Olivia Devall

Student Senate Enrolled Legislation

To appoint a member or fill a vacancy

F22rs Sgcr 53 (Sg Fee Referendum), Cooper Ferguson, Jack Griswold

Student Senate Enrolled Legislation

TO PLACE A REFERENDUM BEFORE THE LOUISIANA STATE UNIVERSITY STUDENT BODY IN THE FALL 2022 ELECTION TO AMEND THE SELF-ASSESSED STUDENT GOVERNMENT FEE TO $3.50 PER FULL TIME STUDENT

F22rs Sgcr No. 55 (Student Media Fee), Adam Dohrenwend, Cooper Ferguson, Jack Griswold, Mavi Pace, Angel Puder

Student Senate Enrolled Legislation

TO PLACE A REFERENDUM BEFORE THE LOUISIANA STATE UNIVERSITY STUDENT BODY IN THE FALL 2022 ELECTION TO INCREASE THE SELF-ASSESSED STUDENT MEDIA FEE BY $2.75 TO BE DISTRIBUTED ALL STUDENT MEDIA ENTITIES

Louisiana Agriculture Fall, 2022

Louisiana Agriculture

Livestock industries contribute $2.5 billion to the state’s economy, and beef cattle production is one of the most important sectors of the state’s agricultural enterprise. LSU AgCenter researchers study how to improve cattle production at research stations across the state. AgCenter Extension agents in every parish connect producers with their findings.

In this issue of Louisiana Agriculture magazine, livestock agents and research faculty describe the many programs they have developed to educate cattle producers and help 4-H’ers raise and show animals. Producers discuss what they have learned from Master Cattleman classes, and writer V. Todd Miller details how some cattle …

F22rs Sgr No. 10 (More Graduate Thesis Editors), Adam Dohrenwend, Gabriella Boodhoo, Alicia Cerquone, Leah Clendaniel, Blessing Egbejiogu, Terry Geraldsen, Ritu Ghose, Cullen Hodges, Natalie Kaczynski, Soheil Kafiliveyjuyeh

Student Senate Enrolled Legislation

To urge and request the Graduate School to hire additional thesis and dissertation editors

Re-Training Of Convolutional Neural Networks For Glottis Segmentation In Endoscopic High-Speed Videos, Michael Döllinger, Tobias Schraut, Lea A. Henrich, Dinesh Chhetri, Matthias Echternach, Aaron M. Johnson, Melda Kunduk, Youri Maryn, Rita R. Patel, Robin Samlan, Marion Semmler, Anne Schützenberger

Faculty Publications

Endoscopic high-speed video (HSV) systems for visualization and assessment of vocal fold dynamics in the larynx are diverse and technically advancing. To consider resulting “concepts shifts” for neural network (NN)-based image processing, re-training of already trained and used NNs is necessary to allow for sufficiently accurate image processing for new recording modalities. We propose and discuss several re-training approaches for convolutional neural networks (CNN) being used for HSV image segmentation. Our baseline CNN was trained on the BAGLS data set (58,750 images). The new BAGLS-RT data set consists of additional 21,050 images from previously unused HSV systems, light sources, and …

Variability Of Carbon Export In The Lower Mississippi River During An Extreme Cold And Warm Year, Lee Potter, Y. Jun Xu

Faculty Publications

The Mississippi River (MR) discharges on average 474 km3 of water annually into the Northern Gulf of Mexico (NGOM) with a large quantity of carbon, playing a vital role in the ecosystem’s food chain and water quality. In this study, we analyzed exports of dissolved inorganic (DIC) and organic carbon (DOC) from January 2021 to December 2021, during which the contiguous United States experienced one of the coldest winters as well as the hottest summer on record. Bi-weekly in situ river measurements and water sampling were conducted in the lower MR at Baton Rouge in Louisiana, USA, approximately 368 km …

Microhabitat And Landscape Drivers Of Richness And Abundance Of Freshwater Mussels (Unionida: Unionidae) In A Coastal Plain River, Corinne T. Bird, Michael D. Kaller, Tiffany E. Pasco, William E. Kelso

Faculty Publications

Although rivers support significant unionid mussel (Unionida: Unionidae) diversity, Gulf of Mexico tributary rivers have been subject to changes in water quality and habitat due to altered watershed land use. We quantified mussel species richness and relative abundance and environmental factors in small tributary streams of the Pearl River, Mississippi-Louisiana. Freshwater mussel and habitat surveys were conducted at 27 stream sampling sites over two summers (9 sites revisited), and coverage of seven land use categories and seven geological categories above each reach were calculated. Mussels were patchily distributed (53% of sites sampled yielded mussels) and typically not abundant (only 26% …

A 3-D Printed Vitrification Device Integrated With French Straws, Nolan J. Tiersch, Jacqueline Paulsen, Yue Liu, Terrence R. Tiersch

Faculty Publications

The goal of this work was to develop prototypes of open-hardware vitrification devices for sperm cryopreservation that can be integrated with existing straw platforms. The open-hardware Vitrification Device for French Straws (VD-FS) is low-cost, customizable, 3-D printable, standardized, and allows long-term sample storage and identification. The feasibility was shown for vitrifying and storing samples with multiple configurations. The results can be improved by design alternation and evaluation of various vitrification solutions. This is the first complete open-hardware vitrification device that can be integrated with existing French-straw storage systems, providing a foundation for future community-level modifications and improvements.

Cryopreservation Of Hydractinia Symbiolongicarpus Sperm To Support Community-Based Repository Development For Preservation Of Genetic Resources, Aidan L. Huene, Jack C. Koch, Lucía Arregui, Yue Liu, Matthew L. Nicotra, Virginia M. Weis, Terrence R. Tiersch

Faculty Publications

Hydractinia symbiolongicarpus is an emerging model organism in which cutting-edge genomic tools and resources are being developed for use in a growing number of research fields. One limitation of this model system is the lack of long-term storage for genetic resources. The goal of this study was to establish a generalizable cryopreservation approach for Hydractinia that would support future repository development for other cnidarian species. Specific objectives were to: (1) characterize basic parameters related to sperm quality; (2) develop a generalizable approach for sperm collection; (3) assess the feasibility of in vitro fertilization (IVF) with sperm after refrigerated storage; (4) …

Profiling Of Shelter Campers, Their Attitudes, And Perceptions Towards Environmental Impacts Of Campsite Use And Management: Evidence From National Parks Of Sri Lanka, Priyan Perera, Shashini Tara Mallikage, David Newsome, Richard Vlosky

Faculty Publications

There is a dearth of research describing the campsite user segment and in assessing camp-site users’ perceptions of the bio-physical impacts of campsite use in Sri Lanka. Using a structured questionnaire, we evaluated campsite user characteristics, visitor motivations, behaviors, and how visitor experience is affected by visible biophysical impacts at campsites. Based on underlying visitor motivations derived through a Factor Analysis and Cluster Analysis, we identified three distinct segments of campsite users: Eco-tourists, Prestige seekers, and Adventure seekers. Results indicate that the overall cleanliness of the campsite is an important attribute that affects the visitor experience. The Ecotourist segment reported …

Social Influences On Physical Activity For Establishing Criteria Leading To Exercise Persistence, Ensela Mema, Everett S. Spain, Corby K. Martin, James O. Hill, R. Drew Sayer, Howard D. Mcinvale, Lee A. Evans, Nicholas H. Gist, Alexander D. Borowsky, Diana M. Thomas

Clinical Research Faculty Publications

Despite well-documented health benefits from exercise, a study on national trends in achieving the recommended minutes of physical activity guidelines has not improved since the guidelines were published in 2008. Peer interactions have been identified as a critical factor for increasing a population’s physical activity. The objective of this study is for establishing criteria for social influences on physical activity for establishing criteria that lead to exercise persistence. A system of differential equations was developed that projects exercise trends over time. The system includes both social and non-social influences that impact changes in physical activity habits and establishes quantitative conditions …

Integration Of Qtl Mapping And Whole Genome Sequencing Identifies Candidate Genes For Alkalinity Tolerance In Rice (Oryza Sativa), Lovepreet Singh, Sapphire Coronejo, Rajat Pruthi, Sandeep Chapagain, Prasanta K. Subudhi

Faculty Publications

Soil alkalinity is an important stressor that impairs crop growth and development, resulting in reduced crop productivity. Unlike salinity stress, research efforts to understand the mechanism of plant adaptation to alkaline stress is limited in rice, a major staple food for the world population. We evaluated a population of 193 recombinant inbred lines (RIL) developed from a cross between Cocodrie and N22 under alkaline stress at the seedling stage. Using a linkage map consisting of 4849 SNP markers, 42 additive QTLs were identified. There were seven genomic regions where two or more QTLs for multiple traits colocalized. Three important QTL …

Antimicrobial Resistant Bacteria In Shrimp And Shrimp Farms Of Bangladesh, Murshida Khan, Sulav Indra Paul, Md Mahbubur Rahman, Julie Anderson Lively

Faculty Publications

The purpose of this study was to investigate the presence of pathogenic bacteria, specifically Escherichia coli and Salmonella and Vibrio species, and their antimicrobial resistance in shrimp aquaculture facilities of Bagerhat (Bangladesh). Sediment samples were collected from both Penaeus monodon and Macrobrachium rosenbergii farms and shrimp samples from the Macrobrachium rosenbergii facility. The abovementioned bacteria were not found, but five Enterobacterales (Proteus penneri, Proteus alimentorum, Morganella morganii, Enterobacter hormaechei subsp. xiangfangensis and Plesiomonas shigelloides) were detected. This is the first documented case of Enterobacter hormaechei subsp. xiangfangensis in a shrimp farm. Nine antibiotics—ampicillin, gentamicin, chloramphenicol, oxytetracycline, nitrofurantoin, levofloxacin, ciprofloxacin, azithromycin, …

A Physical Activity Intervention In Older African Americans: The Paace Pilot Randomized Controlled Trial, Robert L. Newton, Robbie Beyl, Callie Hebert, Melissa Harris, Leah Carter, William Gahan, Owen Carmichael

Clinical Research Faculty Publications

Introduction Older African Americans have low levels of physical activity, which increases the risk of aging-related health conditions. This study aimed to determine the effectiveness of, and satisfaction with, a community-engaged physical activity intervention targeting older African Americans. Methods Fifty-six older African Americans were randomized to a successful aging group (SAG) or a physical activity group (PAG) for 12 wk. The PAG consisted of two weekly group exercise sessions and two to three home-based exercise sessions per week. The SAG consisted of weekly group educational sessions related to various aspects of healthy aging. Physical activity was measured by ActiGraph accelerometers …

Novel Pcr-Based Multiplex Assays For Detecting Major Quality And Biotic Stress In Commercial And Weedy Rice, Noraikim Mohd Hanafiah, Acga Cheng, Phaik Eem Lim, Gomathy Sethuraman, Nurul Amalina Mohd Zain, Niranjan Baisakh, Muhamad Shakirin Mispan

Faculty Publications

While previous research has demonstrated that multiplex polymerase chain reaction (PCR) can be a cost-effective approach to detect various genes in crops, the availability of multiplex assays to simultaneously screen both grain quality and biotic stress resistance traits in rice (Oryza sativa) is limited. In this work, we report six novel multiplex assays that use a universal protocol to detect major rice grain quality (amylose content and fragrance) and biotic stress (blast, sheath blight, and bacterial leaf blight) traits with amplified products consisting of up to four primer pairs that can be analyzed using a standard agarose-based gel electrophoresis system. …

Event-Triggered Control Of Robotic Fish With Reduced Communication Rate, Wenyu Zuo, Animesh Chakravarthy, Michael Malisoff, Zheng Chen

Faculty Publications

Underwater robots often need to communicate with external localization sensors. The low bandwidth in such communications is one of the bottlenecks in achieving accurate tracking control. Toward this end, we adopt a novel periodic event-triggered control (PETC) which allows a robotic fish to reduce its communication load in tracking a desired heading angle with position feedback from an external sensor. To design the PETC, a linear state-space model is derived from a nonlinear dynamic model of the robotic fish with a small perturbation assumption. The PETC consists of an observer, state-feedback controller, integrator, event-trigger rule, and predictor. The observer and …

Observational Constraints On Anisotropies For Bouncing Alternatives To Inflation, Ivan Agullo, Javier Olmedo, Edward Wilson-Ewing

Faculty Publications

We calculate how primordial anisotropies in the background space-time affect the evolution of cosmological perturbations for bouncing alternatives to inflation, like ekpyrosis and the matter bounce scenario. We find that the leading order effect of anisotropies in the contracting phase of the universe is to induce anisotropies in the cosmic microwave background with a very concrete form: a scale-invariant quadrupolar angular distribution. Sub-leading effects are the generation of higher-order moments in the angular distribution, as well as cross-correlations between scalar and tensor modes. We also find that observational constraints from the cosmic microwave background on the quadrupole moment provide strong …

Cosmological Fast Optical Transients With The Zwicky Transient Facility: A Search For Dirty Fireballs, Anna Y.Q. Ho, Daniel A. Perley, Yuhan Yao, Dmitry Svinkin, A. De Ugarte Postigo, R. A. Perley, D. Alexander Kann, Eric Burns, Igor Andreoni, Eric C. Bellm, Elisabetta Bissaldi, Joshua S. Bloom, Thomas G. Brink, Richard Dekany, Andrew J. Drake, José Feliciano Agüí Fernández, Alexei V. Filippenko, Dmitry Frederiks, Matthew J. Graham, Boyan A. Hristov, Mansi M. Kasliwal, S. R. Kulkarni, Harsh Kumar, Russ R. Laher, Alexandra L. Lysenko, Bagrat Mailyan, Christian Malacaria, A. A. Miller, S. Poolakkil, Reed Riddle, Anna Ridnaia, Ben Rusholme, Volodymyr Savchenko

Faculty Publications

Dirty fireballs are a hypothesized class of relativistic massive-star explosions with an initial Lorentz factor Γinit below the Γinit ∼ 100 required to produce a long-duration gamma-ray burst (LGRB), but which could still produce optical emission resembling LGRB afterglows. Here we present the results of a search for on-axis optical afterglows using the Zwicky Transient Facility (ZTF). Our search yielded seven optical transients that resemble on-axis LGRB afterglows in terms of their red colors (g − r > 0 mag), faint host galaxies (r > 23 mag), rapid fading (dr/dt > 1 mag day⁻¹), and in some cases X-ray and radio …

All-Sky Medium Energy Gamma-Ray Observatory Explorer Mission Concept, Regina Caputo, Marco Ajello, Carolyn A. Kierans, Jeremy S. Perkins, Judith L. Racusin, Luca Baldini, Matthew G. Baring, Elisabetta Bissaldi, Eric Burns, Nicholas Cannady, Eric Charles, Rui M.Curado Da Silva, Ke Fang, Henrike Fleischhack, Chris Fryer, Yasushi Fukazawa, J. Eric Grove, Dieter Hartmann, Eric J. Howell, Manoj Jadhav, Christopher M. Karwin, Daniel Kocevski, Naoko Kurahashi, Luca Latronico, Tiffany R. Lewis, Richard Leys, Amy Lien, Lea Marcotulli, Israel Martinez-Castellanos, Mario Nicola Mazziotta, Julie Mcenery, Jessica Metcalfe, Kohta Murase

Faculty Publications

The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) is designed to identify and characterize gamma rays from extreme explosions and accelerators. The main science themes include supermassive black holes and their connections to neutrinos and cosmic rays; binary neutron star mergers and the relativistic jets they produce; cosmic ray particle acceleration sources including galactic supernovae; continuous monitoring of other astrophysical events and sources over the full sky in this important energy range. AMEGO-X will probe the medium energy gamma-ray band using a single instrument with sensitivity up to an order of magnitude greater than previous telescopes in the energy range …

Academic Program Recommendations For Graduate Degrees In Medical Physics: Aapm Report No. 365 (Revision Of Report No. 197), Jay W. Burmeister, Nathan C. Busse, Ashley J. Cetnar, Rebecca R. Howell, Robert Jeraj, A. Kyle Jones, Steven H. King, Kenneth L. Matthews, Victor J. Montemayor, Wayne Newhauser, Anna E. Rodrigues, Ehsan Samei, Timothy V. Turkington, Mary P. Gronberg, Brian Loughery, Alison R. Roth, Michael C. Joiner, Edward F. Jackson, Paul A. Naine, Leonard H. Kim

Faculty Publications

No abstract provided.

Kmt-2021-Blg-0171lb And Kmt-2021-Blg-1689lb: Two Microlensing Planets In The Kmtnet High-Cadence Fields With Followup Observations, Hongjing Yang, Weicheng Zang, Andrew Gould, Jennifer C. Yee, Kyu Ha Hwang, Grant Christie, Takahiro Sumi, Jiyuan Zhang, Shude Mao, Michael D. Albrow, Sun Ju Chung, Cheongho Han, Youn Kil Jung, Yoon Hyun Ryu, In Gu Shin, Yossi Shvartzvald, Sang Mok Cha, Dong Jin Kim, Hyoun Woo Kim, Seung Lee Kim, Chung Uk Lee, Dong Joo Lee, Yongseok Lee, Byeong Gon Park, Richard W. Pogge, John Drummond, Dan Maoz, Jennie Mccormick, Tim Natusch, Matthew T. Penny, Wei Zhu, Ian A. Bond, Fumio Abe

Faculty Publications

Follow-up observations of high-magnification gravitational microlensing events can fully exploit their intrinsic sensitivity to detect extrasolar planets, especially those with small mass ratios. To make followup observations more uniform and efficient, we develop a system, HighMagFinder, to automatically alert possible ongoing high-magnification events based on the real-time data from the Korea Microlensing Telescope Network (KMTNet). We started a new phase of follow-up observations with the help of HighMagFinder in 2021. Here we report the discovery of two planets in high-magnification microlensing events, KMT-2021-BLG-0171 and KMT-2021-BLG-1689, which were identified by the HighMagFinder. We find that both events suffer the 'central-resonant' caustic …

A Covariant Polymerized Scalar Field In Semi-Classical Loop Quantum Gravity, Rodolfo Gambini, Florencia Benítez, Jorge Pullin

Faculty Publications

We propose a new polymerization scheme for scalar fields coupled to gravity. It has the advantage of being a (non-bijective) canonical transformation of the fields, and therefore ensures the covariance of the theory. We study it in detail in spherically symmetric situations and compare to other approaches.