Digital Commons Network^™

Focus-Stacked Images Of Fish Jawbones For Stomach Content Analyses: A Case Study With Select Taxa From Tampa Bay, Florida, Gabriel E. Ramos-Tafur, Kevin A. Thompson, Julianne Knight-Gray, Brittany J. Hall-Scharf, David D. Chagaris, Ted S. Switzer, Richard E. Matheson, Robert H. Mcmichael Jr.

Gulf and Caribbean Research

Trophodynamics and ecosystem models have been increasingly used in evaluating fish stocks, requiring accurate diet data; however, complications with identifications arise when the soft tissues of fish prey break down during digestion, limiting the taxonomic resolution obtained during stomach content analyses. Although scales and otoliths are relatively resistant to digestion, their usefulness for distinguishing among fish prey species is limited. Jawbones are frequently observed in predator stomach contents, and while morphologies of some fishes have been described, available information is frequently inadequate for practical application in stomach content analyses. Line drawings have long been the traditional means to convey complex …

Lake Or Estuary? Sedimentary And Benthic Foraminiferal Characterization Of A Gulf Of Mexico Coastal Dune Lake, Kaylyn C. Bellais, Samuel T. Barber, Donald A. Beebe, Murlene W. Clark

Gulf and Caribbean Research

Coastal dune lakes are shallow estuaries located within dune environments that share a permanent or intermittent connection with the sea. Because coastal dune lakes are found in few locations worldwide (e.g. Australia, New Zealand, Florida, etc.) they represent unique environments worthy of protection. However; there is a distinct lack of scientific data related to the function and ecology of coastal dune lakes, especially in the Gulf of Mexico. Therefore, the purpose of this study was to characterize the sedimentology and foraminifera of a representative coastal dune lake in Walton County, FL (i.e. Eastern Lake) and determine whether it shares geologic …

Assessing A Two-Hit Model Of Schizophrenia: Prenatal Choline Deficiency And Induced Hypofunction Of Nmda Receptors In Male And Female Long Evans Rats, Samuel Gray, Samuel W. Gray

Honors Theses

Choline is an essential dietary nutrient essential to the development and function of the central nervous system. Prenatal choline deficiency alters hippocampal development as well as acetylcholine metabolism, leading to cognitive impairments and attentional and sensory processing deficits into adulthood. MK-801 is an NMDA receptor antagonist frequently used in rodent models of neuropsychiatric conditions, particularly schizophrenia. Acutely and sub- chronically, it causes hyperlocomotion and social withdrawal. One primary goal of the present study were to investigate prenatal choline deficiency induces a biological vulnerability to the motor deficits, anhedonia, and social impairment precipitated by low-dose sub-chronic MK-801 administration in adulthood. Another …

Executive Function Deficit As A Precursor To Memory Impairments In Hapoe4 Transgenic Rats, Kaitlin Mcmanus

Honors Theses

The hApoE4 allele is one of the strongest genetic risk factors for Alzheimer’s disease (AD). It underlies amyloid-bdeposits and neurofibrillary tangles, the two hallmarks associated with AD pathology, and is subsequently associated with AD symptomology. Despite its importance, no rat animal studies to date use hApoE4 knock-ins. In addition to this deficit in the field of AD literature, the vast majority of AD studies focus on memory, even though executive function deficits may precede memory impairments in AD, and may be a predictor of AD development. Thus, the present study addressed these gaps in AD research by investigating the behavioral …

When Prosecutors Politick: Progressive Law Enforcers Then And Now, Bruce A. Green, Rebecca Roiphe

Faculty Scholarship

A new and recognizable group of reform-minded prosecutors has assumed the mantle of progressive prosecution. The term is hard to define in part because its adherents embrace a diverse set of policies and priorities. In comparing the contemporary movement with Progressive Era prosecutors, this Article has two related goals. First, it seeks to better define progressive prosecution. Second, it uses a historical comparison to draw some lessons for the current movement. Both groups of prosecutors were elected on a wave of popular support. Unlike today’s mainstream prosecutors who tend to campaign and labor in relative obscurity, these two sets of …

Chlorophyll-Inspired Tunable Metamaterials With Multi-Negative Refractive Index Bands: The Porphyrin Ring And Hydrophobic Tail Effect, Nantakan Wongkasem

Electrical and Computer Engineering Faculty Publications

Tunable negative electromagnetic properties: permittivity, permeability, and refractive index, in mimic Chlorophyll metamaterial structures in the X- and Ku-band regimes are theoretically and numerically demonstrated. A very broad negative permeability covering the majority of the X- and Ku bands, from 8GHz to 16GHz, is observed, while five negative permittivity bands are found within the same range. The two aforementioned properties result in a broad, greater than 25% bandwidth, low-loss negative-refractive index transmission band. These negative electromagnetic properties can be effectively tailored within the low-loss multi-transmission and the high-loss multi-absorption bands in the operating frequency range by modifying the structure’s tiller …

Ensemble Node Embeddings Using Tensor Decomposition: A Case-Study On Deepwalk, Jia Chen, Evangelos E. Papalexakis

Electrical and Computer Engineering Faculty Publications

Node embeddings have been attracting increasing attention during the past years. In this context, we propose a new ensemble node embedding approach, called TENSEMBLE2VEC, by first generating multiple embeddings using the existing techniques and taking them as multiview data input of the state-of-art tensor decomposition model namely PARAFAC2 to learn the shared lower-dimensional representations of the nodes. Contrary to other embedding methods, our TENSEMBLE2VEC takes advantage of the complementary information from different methods or the same method with different hyper-parameters, which bypasses the challenge of choosing models. Extensive tests using real-world data validates the efficiency of the proposed method.

2020-2021 Lindenwood University Undergraduate Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University Undergraduate Course Catalog

Recovering Lost Voices: The Rappahannock Tribe And The Jamestown Festival Of 1957, Woodie L. Walker Ii

Theses and Dissertations

This thesis employs the interdisciplinary methodologies of ethnohistory and oral history to examine the legacy of the 1957 Jamestown Festival through the experiences and memories of Rappahannock people. “Recovering Lost Voices: The Rappahannock Tribe and the Jamestown Festival of 1957” adds to the historiography of Virginia Natives by revealing that Rappahannock participation in the Jamestown Festival was the culmination of centuries of cultural preservation, greatly influenced and made immediate by their experiences in “Jim Crow” Virginia during the twentieth century. This research establishes that the enduring legacy of the Festival for the Rappahannock Tribe was political influence, culminating in state …

Synthesis And The Genetic Encoding Of Novel Lysine Post-Translational Modifications, Sahan A. Galbada Liyanage

Theses and Dissertations

Post-translational modifications (PTMs) play a significant role in regulating cell signaling and regulating the inner cellular environment. The study of PTMs and their primary biological functions is critical for the development of new medicines targeting the pathways and biomolecules responsible for the PTMs.

Previous studies revealed the direct coupling of the β -hydroxybutyryl lysine (K_BHB) modification with the gene expression. K_BHB in histone proteins links metabolism to epigenetics and gene expression and enables to study in-depth, how cell metabolism controls the gene expression and vice versa. Similar novel histone modification, K_Lac, attracts a special interest …

The Efficacy Of The Healthy Families Flourish Program For Families Raising Children With Autism Spectrum Disorder, Carli Madalena Rita

Honors Theses and Capstones

The family unit is the driving force that creates a foundation for life satisfaction and wellbeing of a child that extends across the lifespan. Understanding family health and family participation in meaningful daily activities are critical components of family life lacking in current research, especially for families raising children with autism spectrum disorder (ASD). This study seeks to determine the effectiveness of an occupational therapy intervention program designed to support families raising children with ASD to identify and overcome barriers to everyday family activities. The Healthy Families Flourish Program is a 10-session occupational therapy intervention program developed for this study …

Summer Research Fellowship Project Descriptions 2020, Clark Science Center's Summer Research Fellows Program

SURF Abstracts (Women in Science)

A summary of research done by Smith College’s 2020 Summer Research Fellowship (SURF) Program participants. Ever since its 1967 start, SURF has been a cornerstone of Smith’s science education. Supervised by faculty mentor-advisors drawn from the Clark Science Center and connected to its eighteen science, mathematics, and engineering departments and programs and associated centers and units. At summer’s end, SURF participants were asked to summarize their research experiences for this publication.

A Numerical And Experimental Study On Effect Of Composition Of Ar-N2 Shielding Gas On The Weld Bead Profile And Its Prediction For Hot Wire Arc Additive Manufacturing, Niraj Pudasaini

College of Graduate Studies: Theses & Dissertations

Wire arc additive manufacturing is a process of making three-dimensional metal parts in a layer-by-layer approach using a feed wire and electric arc as a heat source. Wire arc additive manufacturing (WAAM) is becoming more popular due to its ability to create complex 3D parts, less build time, high deposition rate, and significant cost savings. Out of the many parameters used in WAAM, one of the important parameters is shielding gas which plays a significant role in material quality, properties, and defects. In this study, a controlled amount of Argon (Ar) and Nitrogen (N₂) shielding gases are used …

Developmental Biology (Embryology) Course Syllabus And Policies, Steelman Library, Todd D. Schraw Dr.

Syllabus Repository

No abstract provided.

Research In Biological Sciences, Steelman Library, Melba Horton

Syllabus Repository

No abstract provided.

Deep Learning For Digitized Histology Image Analysis, Sudhir Sornapudi

Doctoral Dissertations

“Cervical cancer is the fourth most frequent cancer that affects women worldwide. Assessment of cervical intraepithelial neoplasia (CIN) through histopathology remains as the standard for absolute determination of cancer. The examination of tissue samples under a microscope requires considerable time and effort from expert pathologists. There is a need to design an automated tool to assist pathologists for digitized histology slide analysis. Pre-cervical cancer is generally determined by examining the CIN which is the growth of atypical cells from the basement membrane (bottom) to the top of the epithelium. It has four grades, including: Normal, CIN1, CIN2, and CIN3. In …

The Combined Toxic Effect Of Nanoparticles And Lead In The Presence Of Algae (Raphidocelis), Xuesong Liu

Doctoral Dissertations

"The elevated toxicity of toxic metals in the presence of nanoparticles (NPs) has raised significant concerns on the NP environmental safety. This research focuses on the impact of environmental conditions, specifically algae, on this type of toxicity. An indicator aquatic organism, Ceriodaphnia dubia (C. dubia), was used to examine the combined toxicity and toxicity mitigation from algae by monitoring its 24-h mortality. Four papers are included in this research, which focus on four aspects of the combined toxicity and the corresponding algae (Raphidocelis) impact. The first paper examines the algae impact on the combined toxicity of …

Studies On The Stability Of Plasma Proteins And Their Fragments, Paul Praveen Nakka

Doctoral Dissertations

“The stability of a protein-based biological drug is an important concern during processing, storage or patient administration. There are various forces which contribute to the stabilizing of proteins. Both hydrogen bonds and hydrophobic interactions play an important role in protein stability. Improper folding or misfolding of proteins leads to aggregation, which is a major problem found in the bioprocessing industry. The objectives of this research are: 1) to determine the effect of environmental factors such as pH, temperature, additives or salts, and cosolvents on the stability human serum albumin (HAS), which is the most abundant protein in plasma, 2) to …

Predicting Complex System Behavior Using Hybrid Modeling And Computational Intelligence, Vinayaka Gude

Doctoral Dissertations

“Modeling and prediction of complex systems is a challenging problem due to the sub-system interactions and dependencies. This research examines combining various computational intelligence algorithms and modeling techniques to provide insights into these complex processes and allow for better decision making. This hybrid methodology provided additional capabilities to analyze and predict the overall system behavior where a single model cannot be used to understand the complex problem. The systems analyzed here are flooding events and fetal health care. The impact of floods on road infrastructure is investigated using graph theory, agent-based traffic simulation, and Long Short-Term Memory deep learning to …

Investigating The Role Of Protein Phosphatase 2a In The Salt Stress Response In Arabidopsis Thaliana, Daniel J. Dirocco

Honors Theses and Capstones

Protein Phosphatase 2A (PP2A) is a ubiquitous enzyme in eukaryotes that regulates a large array of cellular signaling processes. PP2A is composed of three subunits: catalytic C subunit, regulatory B subunit, and scaffolding/regulatory A subunit. In Arabidopsis thaliana, the A subunit has three isoforms - A1, A2, and A3 - that are highly conserved at the protein level, indicating that these proteins may be functionally interchangeable. In comparison to wildtype plants, seedlings with a mutation in the A1 gene have roots with obvious root cell file rotation or twisting under conditions of moderate salt stress. Twisted root cells result …

Tick-Borne Infections In New Hampshire: An Evaluation Of The Diagnostic Process In A Local Patient Population, Katherine Anderson

Honors Theses and Capstones

Overall, approximately 95 percent of reported cases of vector-borne disease were associated with ticks, making these the most medically important group of arthropods in the United States.¹ Despite the prevalence of tick-borne infections, the process for the diagnosis of this condition is not well studied. This study aims to analyze data from a pool of 100 patients who underwent testing for tick-borne disease in the same institution in Dover, New Hampshire during the most recent peak tick season of 2019. Information utilized in this study included: patient age, sex, location of testing (inpatient versus outpatient), diagnostic testing methods used …

It Security Policy Compliance: A University Perspective, Jack D. Barnes

Honors Theses and Capstones

No abstract provided.

How Efficient Is Market Pricing: Can Investors Beat The Market? Further, Are Prices Always Right As Stated In The Efficient Market Hypothesis?, Porter M. Mcmanus

Honors Theses and Capstones

The Efficient Market Hypothesis is a widely accepted economic theory developed by economist Eugene Fama. The theory states that at any given time, an asset’s price reflects all available public information and will always trade at fair value. The motivation for this research is derived from the content taught in undergraduate finance courses. In undergraduate academia finance students are introduced to the idea of market efficiency, as it is a building block for future theory and application. However, this theory is rarely questioned in the world of undergraduate academia, rather just taken as fact by students.

The underlying research in …

Identifying Rpa-Dependent Epigenetic Modifications Influencing Arabidopsis Thaliana Flowering Time, Emily S. Berry

Honors Theses and Capstones

Epigenetics is the study of heritable changes that do not directly alter the DNA sequence. Many of these inheritance mechanisms are caused by the addition of a methyl group to cytosine nucleotides in DNA that prevent gene expression. The model organism Arabidopsis thaliana (abbreviated A. thaliana) is commonly used in genetic experiments, and its usefulness is extended to research in epigenetics. Our current research (Culligan lab), in part, focuses on genes involved in DNA damage and repair, such as brca2 and the rpa1a/b/c/d/e genes. Previous genetic analyses suggests that the rpa1c/e double-mutant typically expresses an early flowering phenotype despite …

The Cholera Crisis In Yemen: Case Studies On Vulnerability And Resilience In Sana'a, Al Hudaydah, And Ma'areb, Noor Albannein A. Al-Saad

Honors Theses and Capstones

The largest recorded cholera epidemic in history is happening right now in Yemen, a country which has reported over 2 million cases of cholera as of 2020. Yemen has a history of endemic cholera, but prolonged conflict in the country has led to deteriorating conditions that have triggered massive outbreaks of the disease. The purpose of this study is to investigate the direct and indirect causes of the cholera epidemic in Yemen by proposing factors that may confer vulnerability and resilience in Yemeni governorates. Case studies were constructed for three governorates: Sana’a and the inner municipality of Amanat Al Asimah; …

Therapeutic Dna: Delivery And As A Delivery Vehicle, Natalie J. Holl

Masters Theses

"A review of gene delivery methods and gene editing methods, as well as original research utilizing DNA as a delivery vehicle is presented in the following thesis. Thousands of diseases have been linked to genes. Gene therapy, either delivering therapeutic genes or editing DNA bases, has arisen as a treatment option with the potential to cure diseases, rather than just ease symptoms. Genes and editing tools need to be delivered to cells for these therapies to be effective and many techniques have been developed to address the issue of delivery. Nonviral and viral methods have been used to deliver nucleic …

Aquatic Plants And Their Application To Successful Floating Treatment Wetlands, Katherine May Mazanec

Masters Theses

“This research aims to mitigate eutrophication of freshwater habitats affected by urban stormwater runoff. Two highly impacted urban ponds near the Missouri S&T campus in Rolla were the focus of this research on the application of floating treatment wetlands (FTWs). An FTW consists of a man-made floating mat that is planted with emergent or floating macrophytes. The plants grow on the mat and their roots extend into the water column below the mat. Plant tissues, especially roots in direct contact with the water, take up nutrients, act as biofilm growth sites, and may facilitate precipitation of nutrients. With urbanization, ponds …

Micro-Analysis Of Contaminants In Suspended Load And Bank Deposits From The Mineral Fork Creek Watershed In Potosi, Missouri, 2019-2020, William Joseph Miller

Masters Theses

”There are rising concerns pertaining to water contamination produced by toxic heavy metal contaminants such as lead and zinc. For this study, lead, zinc, and barite are three identified contaminants currently threatening Missouri water supplies. A microanalysis of the amounts of lead, zinc, and barite in the water of Mineral Fork Creek was conducted, involving both field and laboratory work. The purpose of the study was to determine the levels of lead, zinc, and barite contaminants, contributing to Big River, by Mineral Fork Creek, in Potosi Missouri, Washington County.

This research study uses a quantitative micro-analysis approach to determine the …

Evaluation Of The Symbiotic Relation Between Endophyte And Poplar Trees Exposed To Landfill Leachate, Catalina Vega Hurtado

Masters Theses

“The contamination of soil and groundwater from leachate leakage from landfill has turned, nowadays, into a global public issue. One of the main concerns about this pollutant is the potential threat to human and ecosystem health. The current research studied endophyte bacteria in association with poplar trees (Populus sp.), as a method of bioremediation of landfill leachates. The objective of the project was to identify treatment strategies that may improve plant performance (survival rates, plant fitness, and degradation efficacy) with the purpose of being implemented in phytoremediation plots, aimed to intercept and treat landfill leachate, before the contamination of watershed. …

Quantifying Effects Of Sleep Deprivation On Cognitive Performance, Quang Nghia Le

Masters Theses

“The most commonly used metric for evaluating alertness and vigilance is the Psychomotor Vigilance Test (PVT), previous studies have indicated that alertness and vigilance can be affected by the lack of sleep as a function of sleep loss. This study explores methods to predict median psychomotor vigilance reaction times. The data used in this study comes from a series of tests and surveys conducted on volunteer students. The data set contains many potential predictors of PVT and one aspect of the study was to identify variables that are useful in prediction. The performances of various prediction methods that allow for …