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Modeling Crash Severity And Collision Types Using Machine Learning, Amit Kumar, Hari Krishnan Melempat Kalapurayil

Data

Traffic safety analysis is the fundamental step for reducing economic, social, and environmental cost incurred due to traffic accidents. The essence of traffic safety is understanding the factors affecting crash occurrence, injury severity and collision type and their underlying relationships and predict-prevent future crash instances. Crash injury severity studies in past have utilized numerous statistical, econometric and Machine Learning (ML) and Artificial Intelligence (AI) tools to extract the underlying relationship between the crash causal factors and the consequent severity or collision type. The study aims to explore the Multi-Label Classification (MLC) tool from the domain of Artificial Intelligence (AI) for …

Modeling Crash Severity And Collision Types Using Machine Learning, Amit Kumar, Hari Krishnan Melempat Kalapurayil

Publications

Traffic safety analysis is the fundamental step for reducing economic, social, and environmental cost incurred due to traffic accidents. The essence of traffic safety is understanding the factors affecting crash occurrence, injury severity and collision type and their underlying relationships and predict-prevent future crash instances. Crash injury severity studies in past have utilized numerous statistical, econometric and Machine Learning (ML) and Artificial Intelligence (AI) tools to extract the underlying relationship between the crash causal factors and the consequent severity or collision type. The study aims to explore the Multi-Label Classification (MLC) tool from the domain of Artificial Intelligence (AI) for …

Data Files Used In The Book Time Series Data Analysis In Oceanography By C. Li, Cambridge University Press, Chunyan Li

WAVCIS

The files provided here are used in Li (2022), a book of data analysis. These data files are used as examples or for exercises at the end of chapters in the book.

Li, C., 2022. Time Series Data Analysis in Oceanography: Applications using MATLAB. Cambridge University Press, pp 465. (ISBN: 9781108474276; DOI: https://doi.org/10.1017/9781108697101).

High-Resolution Air Pressure Measured From Ground Stations, Chunyan Li

WAVCIS

Air pressure data were recorded at two ground stations separated by 9.6 km. The sampling intervals are ~ 3 sec and 21 sec, respectively. The data files provided here are the raw data.

A Triple Threat: The Parastagonospora Nodorum Sntox267 Effector Exploits Three Distinct Host Genetic Factors To Cause Disease In Wheat, Jonathan K. Richards, Gayan K. Kariyawasam, Sudeshi Seneviratne, Nathan A. Wyatt, Steven S. Xu, Zhaohui Liu, Justin D. Faris, Timothy L. Friesen

Faculty Publications

Parastagonospora nodorum is a fungal pathogen of wheat. As a necrotrophic specialist, it deploys effector proteins that target dominant host susceptibility genes to elicit programmed cell death (PCD). Here we identify and functionally validate the effector targeting the host susceptibility genes Snn2, Snn6 and Snn7. We utilized whole-genome sequencing, association mapping, gene-disrupted mutants, gain-of-function transformants, virulence assays, bioinformatics and quantitative PCR to characterize these interactions. A single proteinaceous effector, SnTox267, targeted Snn2, Snn6 and Snn7 to trigger PCD. Snn2 and Snn6 functioned cooperatively to trigger PCD in a light-dependent pathway, whereas Snn7-mediated PCD functioned in a light-independent pathway. Isolates harboring …

The Parastagonospora Nodorum Necrotrophic Effector Sntox5 Targets The Wheat Gene Snn5 And Facilitates Entry Into The Leaf Mesophyll, Gayan K. Kariyawasam, Jonathan K. Richards, Nathan A. Wyatt, Katherine L.D. Running, Steven S. Xu, Zhaohui Liu, Pawel Borowicz, Justin D. Faris, Timothy L. Friesen

Faculty Publications

Parastagonospora nodorum is an economically important necrotrophic fungal pathogen of wheat. Parastagonospora nodorum secretes necrotrophic effectors that target wheat susceptibility genes to induce programmed cell death (PCD). In this study, we cloned and functionally validated SnTox5 and characterized its role in pathogenesis. We used whole genome sequencing, genome-wide association study (GWAS) mapping, CRISPR-Cas9-based gene disruption, gain-of-function transformation, quantitative trait locus (QTL) analysis, haplotype and isoform analysis, protein modeling, quantitative PCR, and laser confocal microscopy to validate SnTox5 and functionally characterize SnTox5. SnTox5 is a mature 16.26 kDa protein with high structural similarity to SnTox3. Wild-type and mutant P. nodorum strains …

A New Detection Of The Invasive Mexican Rice Borer (Lepidoptera: Crambidae) From Georgia In The United States Based On Morphological And Molecular Data, Ilgoo Kang, Blake Wilson, Blake Carter, Rodrigo Diaz

Faculty Publications

The Mexican rice borer, Eoreuma loftini (Dyar), is an invasive herbivore that attacks many gramineous host plants. The species is an economic pest of several grass crops in North America including sugarcane (Saccharum spp.), rice (Oryza sativa), corn (Zea mays), and sorghum (Sorghum bicolor). The species was first detected in the United States in 1980 and has since expanded its range eastward along the Gulf Coast reaching Louisiana in 2008. A disjointed introduction was detected in Florida in 2012, though range expansion of this population within the state has been limited. Most recently, a separate introduction was detected along the …

Context-Dependent Viral Transgenerational Immune Priming In Honey Bees (Hymenoptera: Apidae), Sarah Lang, Michael Simone-Finstrom, Kristen Healy

Faculty Publications

Transgenerational immune priming is the process of increased resistance to infection in offspring due to parental pathogen exposure. Honey bees (Apis mellifera L. (Hymenoptera: Apidae)) are hosts to multiple pathogens, and this complex immune function could help protect against overwhelming infection. Honey bees have demonstrated transgenerational immune priming for the bacterial pathogen Paenibacillus larvae; however, evidence for viral transgenerational immune priming is lacking across insects in general. Here we test for the presence of transgenerational immune priming in honey bees with Deformed wing virus (DWV) by injecting pupae from DWV-exposed queens and measuring virus titer and immune gene expression. Our …

Impact Report, 2021-2022, Lsu Libraries

Libraries Impact Reports

No abstract provided.

Fin-Tastic Fish Science, Christy Rose Wayne

Maruska Lab

This comic introduces topics relevant to lab publications ranging from general neuroscience to detailed fish behavior in a fun, narrative setting to improve general understand of our research.

A Longitudinal Investigation Of The Semantic Receptive-Expressive Gap In Spanish-English Bilingual Children, Todd A. Gibson, Elizabeth D. Peña, Lisa M. Bedore, Kevin S. Mccarter

Faculty Publications

Although a semantic receptive-expressive gap appears to be a universal feature of early bilingualism, little is known about its development. We sought to determine if the magnitude of the discrepancy between receptive and expressive standard scores changed over time in bilingual children’s two languages. In this longitudinal study, standardized receptive and expressive semantics tests of 106 Spanish-English bilingual children with TD were taken at kindergarten and first grade in both English and Spanish. We used a multivariate analysis approach to identify interactions and main effects. Although both receptive and expressive standard scores improved across the year in both languages, the …

Genetic And Stress Influences On The Prevalence Of Hypertension Among Hispanics/Latinos In The Hispanic Community Health Study/Study Of Latinos (Hchs/Sol), Liana K. Preudhomme, Marc D. Gellman, Nora Franceschini, Krista M. Perreira, Lindsay E. Fernández-Rhodes, Linda C. Gallo, Carmen R. Isasi, Sylvia Smoller, Sheila F. Castañeda, Martha Daviglus, Christina Hutten, Richard S. Cooper, Jianwen Cai, Neil Schneiderman, Maria M. Llabre

Faculty Publications

Purpose: The current study examined the effects of chronic stress and a genetic risk score on the presence of hypertension and elevated systolic blood pressure and diastolic blood pressure among Hispanics/Latinos in the target population of Hispanic Community Health Study/Study of Latinos. Materials and Methods: Of the participants (N = 11,623) assessed during two clinic visits (Visit 1 2008–2013 & Visit 2 2014–2018), we analysed data from 7,429 adults (50.4% female), aged 18–74, who were genotyped and responded to chronic stress questionnaires. We calculated an unweighted genetic risk score using blood pressure increasing single nucleotide polymorphisms (SNPs) found to be …

Effects Of Testing And Disclosing Ancestry-Specific Genetic Risk For Kidney Failure On Patients And Health Care Professionals: A Randomized Clinical Trial, Girish N. Nadkarni, Kezhen Fei, Michelle A. Ramos, Diane Hauser, Emilia Bagiella, Stephen B. Ellis, Saskia Sanderson, Stuart A. Scott, Tatiana Sabin, Ebony Madden, Richard Cooper, Martin Pollak, Neil Calman, Erwin P. Bottinger, Carol R. Horowitz

Faculty Publications

Importance: Risk variants in the apolipoprotein L1 (APOL1 [OMIM 603743]) gene on chromosome 22 are common in individuals of West African ancestry and confer increased risk of kidney failure for people with African ancestry and hypertension. Whether disclosing APOL1 genetic testing results to patients of African ancestry and their clinicians affects blood pressure, kidney disease screening, or patient behaviors is unknown. Objective: To determine the effects of testing and disclosing APOL1 genetic results to patients of African ancestry with hypertension and their clinicians. Design, Setting, and Participants: This pragmatic randomized clinical trial randomly assigned 2050 adults of African ancestry with …

The Band Of American Ladies : Children’S Librarians And The Creation Of Children’S Literature In The Long 19th Century, Suzanne Stauffer

Faculty Publications

No abstract provided.

Price Response Of The High Fructose Corn Syrup Industry In The United States: A Bertrand Model Application, Pablo A. Garcia-Fuentes, P. Lynn Kennedy, Gustavo F.C. Ferreira

Faculty Publications

This paper uses a Bertrand duopoly model application and derives a high fructose corn syrup (HFCS) price reaction function that shows the response of the price of HFCS to changes in the price of sugar. It conducts cointegration analysis and assesses the performance of the HFCS price reaction model by estimating a Dynamic Ordinary Least-Squares model. It finds that the prices of HFCS-55, sugar, and corn are cointegrated over the period 1981:1 to 2017:12. The estimated long-run relationship shows that a one percent increase in the price of sugar increases the price of HFCS-55 by 0.19 percent. Additionally, the price …

The Impact Of Cultivar Development And Cultural Practices On Louisiana Rice Yield, P. Lynn Kennedy, Andrew Schmitz, Steve Linscombe, Fangyi Zhang

Faculty Publications

This analysis investigates the impact of cultivar development and cultural practices on Louisiana rice (Oryza sativa L.) yield growth using the Chow test (Chow, 1960) in combination with regression analysis. The analysis examines the 1895–2019 period, and uses four scenarios in which one, two, three, and four subperiods show varying rates of rice yield growth in Louisiana. There has been a significant increase in Louisiana rice yields over time. However, the growth in yields for some of the subperiods is greater than for others. Our results of significant rice yield increase over time correspond with events such as the establishment …

Alternative Nesting Strategies Of Polistine Wasps In A Subtropical Locale, Scott Nacko, Mark A. Hall, Gregg Henderson

Faculty Publications

Phylogenetic studies suggest that historically all paper wasps (Vespidae: Polistinae) in North America have tropical origins, but some species have adapted to survive temperate conditions. Subtropical climates, which are intermediate between temperate and tropical, allow a unique opportu-nity to study ancestral traits which can be retained or lost within populations, and ultimately elucidate the process of social wasp evolution. We investigated the phenology of paper wasps at study sites in subtropical Baton Rouge, USA, through nest searching and monitoring of nest parameters throughout the warm season (March–October). Across the year, two periods of nest initiation occurred: from March–May (early season …

Lsu General Catalog 2022-2023, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The LSU General Catalog includes information on registration and financial aid as well as academic services offered to all students.

The Association Of The Development Of The Internal Reproductive Organs Of Male Desert Locusts, Schistocerca Gregaria (Orthoptera: Acrididae), With Age, Phase And The Effect Of Exposure To Pheromones, Satoshi Hiroyoshi, Takayuki Mitsunaga, Gadi V.P. Reddy

Faculty Publications

The regulation of the development of the male reproductive organs in insects is still an open question. Although the desert locust, Schistocerca gregaria, has been extensively examined, there is little information on the effects of phase and pheromones on the development of the male reproductive organs. This study clarifi ed the association of these two factors with reproductive development (length or width of each organ) of the testis, testicular follicles, accessory glands, and seminal vesicles in this locust. The width of the follicles and width and length of the accessory gland mass are signifi cantly associated with phase (solitary or …

Holistic Management Of Pollinators And Pests: Integrating Semiochemicals With On-Farm Pesticides, Olabimpe O. Okosun, Gadi V.P. Reddy

Faculty Publications

Insect pollinators and insect herbivores affect plant reproduction and fitness. Floral displays are used to attract and manipulate pollinators' behavior to support plant sexual reproduction while rewarding the visitors with access to nectar and pollen. The plant-pollinator interactions use various semiochemicals as important communication channels for successful species interaction networks. Floral display and scents can also attract insect herbivores (in which case they act as kairomones). Consequently, semiochemical-color-based traps used for monitoring pest insects in crop fields often accidentally capture pollinators, and these interactions simultaneously affect pest monitoring, pollinator assemblages, and crop production in agroecosystems. An integrated interdisciplinary approach that …

Inference On Moderation Effect With Third-Variable Effect Analysis–Application To Explore The Trend Of Racial Disparity In Oncotype Dx Test For Breast Cancer Treatment, Qingzhao Yu, Lu Zhang, Xiaocheng Wu, Bin Li

Faculty Publications

Third variable effect refers to the effect from a third variable that explains an observed relationship between an exposure and an outcome. Depending on whether there is causal relationship, typically, a third variable takes the format of a mediator or a confounder. A moderation effect is a special case of the third-variable effect, where the moderator and other variables have an interactive effect on the outcome. In this paper, we extend the R package ‘mma’ for moderation analysis so that third-variable effects can be reported at different levels of the moderator. The proposed moderation analysis use tree-structured models to automatically …

Louisiana Agriculture Winter, 2022, Lsu Agcenter

Louisiana Agriculture

Louisiana’s agricultural and natural resources continue to be under attack from a wide variety of invasive species. Some are new to the state, while others have been here for a long time. This issue of Louisiana Agriculture highlights the broad range of research activities being conducted by LSU AgCenter scientists to understand how invasive species survive and thrive and to identify effective means of controlling or limiting their damage in the state.

On The Need For New Measures Of Phylogenomic Support, Robert C. Thomson, Jeremy M. Brown

Faculty Publications

The scale of data sets used to infer phylogenies has grown dramatically in the last decades, providing researchers with an enormous amount of information with which to draw inferences about evolutionary history. However, standard approaches to assessing confidence in those inferences (e.g., nonparametric bootstrap proportions [BP] and Bayesian posterior probabilities [PPs]) are still deeply influenced by statistical procedures and frameworks that were developed when information was much more limited. These approaches largely quantify uncertainty caused by limited amounts of data, which is often vanishingly small with modern, genome-scale sequence data sets. As a consequence, today's phylogenomic studies routinely report near-complete …

Regenerative Agriculture Effects On Invertebrate And Bird Communities And Insect-Provided Ecosystem Services, Alex Michels

Electronic Theses and Dissertations

Conventional agricultural practices can have unintended consequences on the environment and wildlife. Insects and birds are declining at rapid rates around the world, and the current conventional agricultural paradigm is a major driver through habitat loss and the intensification of production. Invertebrates in agroecosystems provide services to both farmers and the rest of society. Regenerative systems may promote the functioning of an agroecosystem by influencing invertebrate abundance, diversity, and ecosystem services and mitigate bird and insect declines through conservation practices that increase soil health, reduce disturbances, and increase biological diversity. Here I address knowledge gaps of the effects of regenerative …

Leveraging Queueing Theory To Develop Advanced Synthetic Biological Circuits, Prajakta K. Jadhav

Electronic Theses and Dissertations

The complexity and redundancy in the network topology of the cell hinder our understanding of the natural system, making it challenging to engineer living organisms with the desired functionality. The long-term goal of synthetic biology and bioengineering is to engineer cells to perform specific functions with increased robustness. The robust engineered systems can be easily applied to different species with the same outcome. An effective approach is a bottom-up approach where we tease apart the biological pathways and study them independently. Understanding the underlying mechanisms of biological pathways can be further applied to construct complex biological circuits that function similarly …

Learning By Doing: Student Group Fitness Instructors Gain Leadership, Communication, And Relationship Building Skills In Campus Recreation, Morgyn Felty

Electronic Theses and Dissertations

Student employee positions in campus recreation allow students to gain transferrable skills. Previous studies show that students employed in specialized program areas have different experiences that are beneficial for their development. Addressing the gap in research, the purpose of this study was to understand the relationship between leadership, communication, and relationship building skills among student group fitness instructors. Additionally, to investigate if transferrable skill development varies based on an instructor’s work experience and demographics. A total of 112 student group fitness instructors from 17 different NIRSA institutions completed an electronic questionnaire in the fall of 2021. Recreation directors were invited …

Response Of Soil Biochemical And Physical Properties To Long Term Prairie Cordgrass And Kura Clover Intercropping System, Vaishnavi Varikuti

Electronic Theses and Dissertations

Prairie cordgrass (Spartina pectinata) (PCG) is a warm-season perennial grass that can be used as a biofuel feedstock and can be grown on marginal lands. Previous studies on intercropping of a perennial legume i.e., kura clover (Trifolium ambiguum) (KC) with PCG can improve soil biochemical properties, increase biomass production, mitigate greenhouse gas (GHG) emissions while reducing the chemical fertilizer requirement. However, there is a lack of evidence about the effects of PCG production on soil biochemical and physical properties during the cropping season and at deeper soil depths in reference to support plant growth, environmental implications and enhance the soil …

Characterization Of Shear Strength And Cracking Resistance Of A Chemically Stabilized Clayey Soil, Abdulaziz Alhawiti

Electronic Theses and Dissertations

Improving the engineering properties of the subgrade soil by means of chemical stabilization is known to enhance the construction conditions in plastic soils and result in a reduction in design thickness requirements of the base, subbase, and wearing course in a layered pavement structure. This can also potentially lead to an increase in pavement life. This study was undertaken to study the effect of hydrated lime and Portland cement used as a stabilizing agents on the strength properties and the cracking resistance of a clayey soil collected from South Dakota. Hydrated lime was mixed with the collected soil by 2%, …

Nanomechanical Characterization And Comparison Of Additively Manufactured Grcop-42 Alloy, Trupti Suresh Mali

Electronic Theses and Dissertations

In an aggressive thermomechanical environment, the superior mechanical as well as thermal properties of materials play an essential role. GRCop which is a copper-based alloy developed by NASA has the potential to fulfill the requirements necessary for hightemperature applications such as the combustion chamber of liquid rocket engines. The first alloy of this family, GRCop-84 (Cu-8 wt.% Cr-4 wt.% Nb) was discovered followed with the development of GRCop-42 (Cu-4 wt.% Cr, 2 wt.% Nb). The reduction in alloying element percentage enhanced thermal conductivity with less built time while maintaining the strength of the material. The conventional fabrication is replaced with …

Using Structure Location Data To Map The Wildland-Urban Interface In Montana, Usa, Alexander R. Ketchpaw

Electronic Theses and Dissertations

The increasing wildfire activity and rapid population growth in the wildfire-urban interface (WUI) make more Americans exposed to wildfire risk. WUI mapping plays a significant role in wildfire management. This study used the Microsoft building footprint (MBF) and the Montana address/structure framework datasets to map the WUI in Montana. A systematic comparison of the following three types of WUI was performed: the WUI maps derived from the Montana address/structure framework dataset (WUI-P), the WUI maps derived from derived from the MBF dataset (WUI-S), and the Radeloff WUI map derived from census data (WUI-Z). The results show that WUI-S and WUI-P …