Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 158851 - 158880 of 818072

Full-Text Articles in Entire DC Network

The Role Of Dock3 In Normal Skeletal Muscle Function And Metabolism, Adrienne Samani Jan 2022

The Role Of Dock3 In Normal Skeletal Muscle Function And Metabolism, Adrienne Samani

All ETDs from UAB

DOCK (dedicator of cytokinesis) are proteins of an 11-member family of typical guanine exchange factors (GEFs) expressed almost exclusively in the brain and spinal cord. Human pathogenic DOCK3 variants have been identified to cause debilitating neuromuscular phenotypes such as muscle hypotonia, ataxia, and intellectual disability. Our lab identified DOCK3 as being strongly upregulated in Duchene muscular dystrophy (DMD), specifically in the skeletal muscles of DMD patient and mouse skeletal muscles. Global Dock3 KO mice on the dystrophin-deficient background exacerbated skeletal muscle and cardiac phenotypes. Similarly, DOCK3 KO mice appeared to have poor muscle architecture, locomotive activity, reduced myogenic fusion, impaired …

Go to article

Alterations In Synaptic Structure And Tau Phosphorylation In Alheimer's Disease, Courtney K. Walker Jan 2022

Alterations In Synaptic Structure And Tau Phosphorylation In Alheimer's Disease, Courtney K. Walker

All ETDs from UAB

Alzheimer’s disease (AD) is the most common cause of dementia in individuals over the age of 65. Of the two hallmark pathologies of AD, tau neurofibrillary tangles (NFTs) correlate more strongly with cognitive decline than do Aβ plaques. NFTs form in the entorhinal cortex (EC) and appear in anatomically connected regions over time as disease progresses. This tau spreading may occur via synaptic connections. Most excitatory synapses occur on dendritic spines, which house the postsynaptic machinery. Spines are actin-rich, plastic structures that change their size and shape in response to synaptic activity in a process that is dependent on actin …

Go to article

The Requirement Of Transcriptional Lim Complex Co-Regulators For Pancreatic Endocrine Cell Development And Function, Eliana Davi Toren Jan 2022

The Requirement Of Transcriptional Lim Complex Co-Regulators For Pancreatic Endocrine Cell Development And Function, Eliana Davi Toren

All ETDs from UAB

The prevalence and tremendous impact of diabetes mellitus has made glucose regulation of the insulin-producing -cell and surrounding pancreatic islet of Langerhans a center of public and research interests alike. A comprehensive understanding of these hormone-producing cells begins with their developmental origins. What are the genetic cues and participants in the tightly orchestrated process of their formation? Investigating the earliest determinants of islet-cell fate not only allows us to deeply understand mature - and islet-cell function, but also produces a data-driven template for how these cells can be reproduced in future stem-cell based diabetes therapies. LIM transcriptional complexes are indispensable …

Go to article

Renal Lactate Dehydrogenase A: Underlying Mechanisms And Inflammatory Roles In Acute Kidney Injury, Gunars Osis Jan 2022

Renal Lactate Dehydrogenase A: Underlying Mechanisms And Inflammatory Roles In Acute Kidney Injury, Gunars Osis

All ETDs from UAB

Kidneys are physiologically vital organs responsible for blood homeostasis preservation through fluid balance maintenance, blood pressure regulation, hormone production, and toxic compound removal. Acute kidney injury (AKI) is a global condition affecting more than 13 million people yearly, and is characterized by a rapid decline in renal filtration capacity, consequent rise in serum creatinine and nitrogenous waste levels, and is associated with an elevated risk of morbidity in the form of progressive chronic kidney disease, kidney failure, and mortality. AKI-induced renal epithelial cell death forces surviving tubular cells to undergo de-differentiation, rapid proliferation to replace lost cells, and re-differentiation to …

Go to article

The Role Of Alternative Payment Models In Pharmaceutical Services And Outcomes, Matthew G. Parker Jan 2022

The Role Of Alternative Payment Models In Pharmaceutical Services And Outcomes, Matthew G. Parker

All ETDs from UAB

A persistent challenge within the healthcare sector is balancing cost containment for health services and the quality of care associated with these services. This challenge has reinvigorated interest in alternative payment models (i.e., risk-sharing, shared savings, capitation), arrangements between payers and healthcare providers that structure reimbursement for services based on health outcomes. Although much research has assessed the association between these payment models and financial outcomes for medical services, there is a paucity of research that has likewise assessed pharmaceutical outcomes (i.e., electronic prescribing, evidence-based prescribing, medication adherence). The papers comprising this dissertation contribute to this limited body of research …

Go to article

Examining Family Health Through Family-Centered Care Within An Organizational Context, Bria Kathryn Morgan Jan 2022

Examining Family Health Through Family-Centered Care Within An Organizational Context, Bria Kathryn Morgan

All ETDs from UAB

Introduction: Family health is characterized as a multi-dimensional process that is shaped by a number of social determinants. Similar to individual health, various domains work in conjunction and intersect to produce family health. Family-centered care is one of the many ways that healthcare providers can support health, however, little is known about if and how it is beneficial for family health. Considering the relevance of an organizational context, this study seeks to understand the delivery of care within an organization and providers’ perceptions of family-centered care. Data/Methods: Using the case of the Ronald McDonald House, this study integrates qualitative content …

Go to article

In Vitro And In Vivo Antidiabetic Potential Of Monoterpenoids: An Update, Lina T. Al Kury, Aya Abdoh, Kamel Ikbariah, Bassem Sadek, Mohamed Mahgoub Jan 2022

In Vitro And In Vivo Antidiabetic Potential Of Monoterpenoids: An Update, Lina T. Al Kury, Aya Abdoh, Kamel Ikbariah, Bassem Sadek, Mohamed Mahgoub

All Works

Diabetes mellitus (DM) is a chronic metabolic condition characterized by persistent hyper-glycemia due to insufficient insulin levels or insulin resistance. Despite the availability of several oral and injectable hypoglycemic agents, their use is associated with a wide range of side effects. Monoterpenes are compounds extracted from different plants including herbs, vegetables, and fruits and they contribute to their aroma and flavor. Based on their chemical structure, monoterpenes are classified into acyclic, monocyclic, and bicyclic monoterpenes. They have been found to exhibit numerous biological and medicinal effects such as antipruritic, antioxidant, anti-inflammatory, and analgesic activities. Therefore, monoterpenes emerged as promising molecules …

Go to article

Barriers And Facilitators Of Availability Of Hydroxyurea For Sickle Cell Disease In Tanzania; A Qualitative Study Of Pharmaceutical Manufacturers, Importers, And Regulators, Hamu J. Mlyuka, Manase Kilonzi, Ritah F. Mutagonda, Lulu Chirande, Wigilya P. Mikomangwa, David T. Myemba, Godfrey Sambayi, Dorkasi L. Mwakawanga, Joyce Ndunguru, Paschal Ruggajo Jan 2022

Barriers And Facilitators Of Availability Of Hydroxyurea For Sickle Cell Disease In Tanzania; A Qualitative Study Of Pharmaceutical Manufacturers, Importers, And Regulators, Hamu J. Mlyuka, Manase Kilonzi, Ritah F. Mutagonda, Lulu Chirande, Wigilya P. Mikomangwa, David T. Myemba, Godfrey Sambayi, Dorkasi L. Mwakawanga, Joyce Ndunguru, Paschal Ruggajo

Internal Medicine, East Africa

Despite three decades of proven safety and effectiveness of hydroxyurea in modifying sickle cell disease (SCD), its accessibility is limited in Sub-Saharan Africa, which shares 75% of the world’s SCD burden. Therefore, it is time to explore the barriers and facilitators for manufacturing and importation of hydroxyurea for SCD in Tanzania. This was qualitative research that employed a case study approach. Purposive sampling followed by an in-depth interview (IDI) using a semi-structured questionnaire aspired by data saturation enabled us to gather data from 10 participants. The study participants were people with more than three years of experience in pharmaceuticals importation, …

Go to article

Nutrition Practices And Body Composition In Infants Born Preterm, Maggie Jerome Jan 2022

Nutrition Practices And Body Composition In Infants Born Preterm, Maggie Jerome

All ETDs from UAB

Adequate nutrition and optimal growth are critical goals of clinical care for premature infants in the NICU due to rapid brain growth and development that occur during this time. Emerging evidence suggests that body composition in preterm infants is predictive of neurodevelopmental and metabolic outcomes later in childhood. The objective of this dissertation is to investigate factors affecting premature infant growth and body composition, including high enteral protein supplementation, nutrition during the first two weeks of life, and race of infants born at 22-32 weeks gestational age admitted to the UAB NICU. In a pilot study, 56 preterm infants were …

Go to article

Relationship Between Neighborhood Deprivation And Epigenetic Age Acceleration With Pain In Adults With Musculoskeletal Pain, Pamela Jackson Jan 2022

Relationship Between Neighborhood Deprivation And Epigenetic Age Acceleration With Pain In Adults With Musculoskeletal Pain, Pamela Jackson

All ETDs from UAB

Residents of high-deprivation neighborhoods shoulder a greater burden of age-related health conditions, including experiencing worse chronic musculoskeletal pain outcomes, compared to residents of more affluent neighborhoods. Advancing age is a risk factor for chronic health conditions, which epigenetic modifications may explain. Epigenetic age acceleration occurs when an individual’s epigenetic age is older than their chronological age, and that discordance has been identified as a strong predictor of age-related conditions. Epigenetic age acceleration has also been correlated with neighborhood deprivation. However, the mechanisms for neighborhood disparities in chronic musculoskeletal pain remain unclear. The purpose of this dissertation study was to examine …

Go to article

Evaluation Of A Living Shoreline Technique On A Southeastern United States Reservoir, Eric V. Muth Jan 2022

Evaluation Of A Living Shoreline Technique On A Southeastern United States Reservoir, Eric V. Muth

All ETDs from UAB

The impoundment of rivers in the southeastern United States has led to the creation of reservoirs that have seen the riparian zone become heavily developed with residential real estate. As the hybrid river/lake systems started forming new shorelines, property owners reacted by attempting to reduce their losses. This has been done in a variety of ways, with the majority falling into the bulkhead category. The use of vertical hard armament has resulted in a loss of ecological function and an increase in erosion of the lakebed at the toe or escarpment. In response to this, the idea was proposed by …

Go to article

Molecular Imaging Of Cancer For Detection And Monitoring Of Response To Combination Therapy, Tiara S. Napier Jan 2022

Molecular Imaging Of Cancer For Detection And Monitoring Of Response To Combination Therapy, Tiara S. Napier

All ETDs from UAB

Imaging is a primary component of cancer care and aids in diagnosing, response assessment, and monitoring. Molecular imaging techniques provide visualization of unique tumor biology that can be used to personalize treatment. Key features of an effective biomarker are sensitivity, specificity, and ability to provide clinical value beyond that of other types of information already available at the time of diagnosis. For particularly heterogeneous cancer subtypes, such as glioblastoma (GBM) and triple negative breast cancer (TNBC), reliable biomarkers can be challenging to identify and there are few tar-getable receptors for therapy. Our findings demonstrate that quantifying tumor EGFR (panitumumab-IRDye800CW), granzyme …

Go to article

Restoring The Sphingolipid Balance In Glioblastoma, Cyntanna C. Hawkins Jan 2022

Restoring The Sphingolipid Balance In Glioblastoma, Cyntanna C. Hawkins

All ETDs from UAB

Glioblastoma (GBM) is a highly aggressive brain tumor with a median survival of 15 months even with standard of care—surgical resection, radiotherapy, and chemotherapy. Two of the key characteristics contributing to this malignancy are its highly invasive phenotype and resistance to the chemotherapy, temozolomide (TMZ). We, and others, have identified the sphingolipid balance as a driver of these phenotypes with dysregulated sphingolipid metabolism seen in GBM patient samples. The ceramidases, specifically acid ceramidase (ASAH1), mediate the balance between ceramides and sphingosine-1-phosphate (S1P). ASAH1 breaks down ceramides ultimately forming S1P. While ceramides induce cell death, S1P promotes migration and cell survival. …

Go to article

Cell Type-Specific Diurnal Variation In Hippocampus Physiology, Lacy Kathryn Goode Jan 2022

Cell Type-Specific Diurnal Variation In Hippocampus Physiology, Lacy Kathryn Goode

All ETDs from UAB

Circadian rhythms are biological processes that cycle across 24 hours. Driven endogenously by widely expressed and highly conserved clock genes that compose the circadian molecular clock, circadian rhythms are exhibited in numerous facets of physiology across nearly every tissue throughout the body. Diurnal rhythms in cognition, long-term potentiation (LTP), and the expression of clock genes in hippocampus subfields support a role for circadian regulation of hippocampus physiology. However, little is known regarding the circadian molecular clock and diurnal rhythms in neurophysiology at the cellular level. Here, we characterized diurnal differences in spatial memory, LTP, excitability of and synaptic transmission onto …

Go to article

Exploring The Influence Of Psychosocial Stress And Inflammatory Properties Of The Diet On Cardiometabolic Risk And Gut Microbiome Health Among Young Adult Women Of Birmingham, Alabama, Rachel Olivia Knight Jan 2022

Exploring The Influence Of Psychosocial Stress And Inflammatory Properties Of The Diet On Cardiometabolic Risk And Gut Microbiome Health Among Young Adult Women Of Birmingham, Alabama, Rachel Olivia Knight

All ETDs from UAB

Concerning trends for obesity, diabetes, heart attacks, and obesity-related cancers, or cardiometabolic disease (CMD), are developing within the emerging and young adult/adulthood (EYA) population. Evidence supports the concept that chronic stress leads to physiologic dysregulation, reduced mental health, chronic diseases, and reduced longevity; however, these are not inevitable outcomes, and resilience or vulnerability is determined by interacting environmental and biobehavioral factors. Although CMD manifests clinically in older adulthood, disease pathophysiology begins earlier, and thus, EYA is a critical time for observation and intervention. Growing evidence indicates inflammation is a major risk factor in CMD development and may be exacerbated by …

Go to article

Hedgehog Signaling Rewires M2 Macrophage And Regulatory T Cell Metabolism Within The Tumor Microenvironment Of Breast Cancer, Dominique C. Hinshaw Jan 2022

Hedgehog Signaling Rewires M2 Macrophage And Regulatory T Cell Metabolism Within The Tumor Microenvironment Of Breast Cancer, Dominique C. Hinshaw

All ETDs from UAB

Current treatments for breast cancer offer little relief to patients with metastatic disease. A contributory factor to tumor growth and metastasis is aberrant up-regulation of developmental signaling pathways such as the Hedgehog (Hh) signaling pathway. This pathway is aberrantly activated in breast cancer and contributes to tumor progression and metastasis. The success of these events is highly influenced by the surrounding immune microenvironment. Macrophages exist along a spectrum of M1 (tumor-eradicating) to M2 (tumor-promoting), while regulatory T cells (Tregs) are an immunosuppressive cell type. The predominant functions of M2 macrophages and Tregs include dampening the immune response and promoting wound …

Go to article

Intrinsically-Photosensitive Retinal Ganglion Cells And Their Functional Roles, Kevin Q. Chang Jan 2022

Intrinsically-Photosensitive Retinal Ganglion Cells And Their Functional Roles, Kevin Q. Chang

All ETDs from UAB

This project was conducted in Old World monkeys and focused on characterization of the intrinsically photosensitive retinal ganglion cells (ipRGCs) as they pertain to the pupillary light reflex, as well as on the neuroanatomical and electrophysiological characterization of the suprachiasmatic nucleus (SCN) of the hypothalamus as it pertains to circadian rhythms. A custom antibody was developed against the human melanopsin gene. We validated the antibody using western blot and immunohistochemistry. The functional role of ipRGCs in driving pupillary responses was investigated through immunotoxin-induced ablation in Rhesus macaques with the antibody conjugated to saporin. As hypothesized, the pupillary light reflex and …

Go to article

Comprehensive Characterization Of Structural Variations Using Long-Read Sequencing Data, Yu Chen Jan 2022

Comprehensive Characterization Of Structural Variations Using Long-Read Sequencing Data, Yu Chen

All ETDs from UAB

Structural variants (SVs) contribute to genomic diversity and play pathogenic roles in a wide range of genetic disorders. Accurate characterization of SVs is critical for genomic research and studies of disease mechanisms. The rapid development of Third-Generation Sequencing (TGS) technologies has largely increased sequencing read length compared to Next-Generation Sequencing (NGS), bringing both great potentials and challenges in SV discovery through alignment-based and assembly-based approaches. In order to take full advantage of TGS data, I have developed a suite of bioinformatics tools focusing on comprehensive characterization of SVs. For the alignment-based SV discovery, I have developed DeBreak to identify SVs …

Go to article

Distinct Clinical Manifestations Associated With Autoantibodies And Cytokines In Systemic Lupus Erythematosus, Fatima K. Alduraibi Jan 2022

Distinct Clinical Manifestations Associated With Autoantibodies And Cytokines In Systemic Lupus Erythematosus, Fatima K. Alduraibi

All ETDs from UAB

Objective: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by production of autoantibodies (autoAbs) and cytokines. Moreover, lupus nephritis (LN) occurs in approximately 50% of SLE patients. AutoAb and cytokine levels produced by B and T cells are high in LN patients, although their relationship with histological patterns requires investigation. Methods: We analyzed the relationship between B cell cytokines and major T cell cyto-kines, including their association with autoAbs, and the clinical manifestations of SLE, especially LN. We also analyzed endogenous intracellular interferon beta (IFNβ) expression in the peripheral blood mononuclear cells and serum circulating nephritogenic autoAbs from …

Go to article

The Importance Of Building Positive Classroom Community For Adolescents After The Relational Disconnect From The Covid-19 Pandemic, Jessica Ann Swanson Jan 2022

The Importance Of Building Positive Classroom Community For Adolescents After The Relational Disconnect From The Covid-19 Pandemic, Jessica Ann Swanson

All Electronic Theses and Dissertations

This paper aims to analyze the importance of providing students with a positive classroom environment that supports adolescent mental health. Middle school can be a time when students feel lonely, isolated, and oftentimes, it can be physiologically confusing as the body is transforming to becoming an adult. The Covid-19 pandemic exemplified the negative characteristics of normal adolescence. Research suggests that schools that incorporate belonging, relationship building, resilience training, community, and conflict resolution into the classroom can translate to academic success. Social-emotional learning programs can build community and improve adolescent mental health by promoting well-being. Addressing mental health through these types …

Go to article

Beyond The Controversy: An Exploration Of Cultural Socialization Behaviors In Transracial Adoptive Families, Karmen Smith Jan 2022

Beyond The Controversy: An Exploration Of Cultural Socialization Behaviors In Transracial Adoptive Families, Karmen Smith

Antioch University Dissertations & Theses

The voices of the families that have successfully raised transracially adopted children with a positive cultural identity are missing from the literature: “Further research is needed on adoption from the perspective of the adoptee” (Clark et al., 2006, p. 192). There are methodological shortcomings that inhibit our ability to definitively determine adjustment outcomes for this population. Such shortcomings, combined with a failure to address additional variables that influence outcomes, have left identified gaps in the research unaddressed. The purpose of this grounded theory study is to identify the cultural socialization behaviors that contributed to the development of the participant’s positive …

Go to article

Attachment And Creativity Focused Counseling Intervention For Parents And Adolescents Presenting With A Trauma History, Leah Merle Batty-Hibbs Jan 2022

Attachment And Creativity Focused Counseling Intervention For Parents And Adolescents Presenting With A Trauma History, Leah Merle Batty-Hibbs

Antioch University Dissertations & Theses

The central research question that informed this study asks: How do attachment and creativity focused counseling interventions encourage connection between an adolescent and their parent or caregiver? The research study centered on two mother and son dyads that participated in six weeks of a therapeutic intervention. The modality utilized an attachment and creativity focused approach created by the author. Data was collected through a post intervention semi-structured interview with the parent (adult). Data was transcribed and evaluated with an interpretive phenomenological approach. Six themes were identified by a team of researchers. The findings have implications for clinical practice with parents …

Go to article

It Permeated Everything: A Lived Experience Of Slow Violence And Toxicological Disaster, Tara Jo Holmberg Jan 2022

It Permeated Everything: A Lived Experience Of Slow Violence And Toxicological Disaster, Tara Jo Holmberg

Antioch University Dissertations & Theses

Impacts of disasters on individuals are dependent on numerous factors: local to international political dynamics, socioeconomics, geography, educational background, and outside support among others. Currently, much of disaster research focuses on those of natural origin, acute and large-scale environmental events, emergency management, and the ability of individuals, communities, and societies to prepare for, and recover from, likely known disasters in their region. However, there is a lack of data about individual experiences through ‘invisible’ anthropogenic disasters, especially those that fall under the umbrella of slow environmental violence (Davies, 2019; Rice, 2016). Through critical phenomenological autoethnography, I examine an individual experience …

Go to article

Promoting Stem Learning Through A Multidisciplinary Sencer Framework At A Minority-Serving Institution, Diana Samaroo, Sandie Han, Liana Tsenova, Urmi Ghosh-Dastidar Jan 2022

Promoting Stem Learning Through A Multidisciplinary Sencer Framework At A Minority-Serving Institution, Diana Samaroo, Sandie Han, Liana Tsenova, Urmi Ghosh-Dastidar

Publications and Research

The Prospect Park Biodiversity Project was a SENCER collaboration project between the Departments of Biological Sciences, Chemistry, and Mathematics at the New York City College of Technology. The goal of this project was to enhance students' participation and learning in STEM disciplines through a civically engaged framework. The project utilized the eco-complexity of Prospect Park Lake in Brooklyn, New York for an interdisciplinary study on the water quality. The project, which involved ten students and four faculty mentors, integrated microbiology, chemistry, and mathematics perspectives using active-learning pedagogies, including hands-on exploration and collaborative learning.

Go to article

Best Reference 2021, Mahnaz Dar, Maggie Knapp, Dave Pugl, Laurie Selwyn, Rob Tench Jan 2022

Best Reference 2021, Mahnaz Dar, Maggie Knapp, Dave Pugl, Laurie Selwyn, Rob Tench

Libraries Faculty & Staff Publications

No abstract provided.

Go to article

Not Just Women’S Work: Recruiting Men To Occupational Therapy, Alexandra I. Zelin, Erin Melhorn, Kristen J. Black, Nicole Harty Jan 2022

Not Just Women’S Work: Recruiting Men To Occupational Therapy, Alexandra I. Zelin, Erin Melhorn, Kristen J. Black, Nicole Harty

Journal of Occupational Therapy Education

Compared to women, men are less likely to become occupational therapists (OT). To have a more diverse workforce, and to relate to various patient groups, reasons men do not enter the field of OT must be better understood. Our study compares men and women in their familiarity with OT and desire to work in the field. Data were gathered using an online, self-report survey administered to students at a public university in the southeast. The sample included 334 undergraduate students who were in majors that often serve as feeder programs to OT graduate programs. The average age was 19.8 years …

Go to article

Occupational Therapy Students’ Perceived Preparedness To Work With Transgender Clients, Meredith Rosol, Karissa Rogers, Raigan Borsh, Rachel Pavlinec, Marion Russell, Asa N. Russell Jan 2022

Occupational Therapy Students’ Perceived Preparedness To Work With Transgender Clients, Meredith Rosol, Karissa Rogers, Raigan Borsh, Rachel Pavlinec, Marion Russell, Asa N. Russell

Journal of Occupational Therapy Education

In order to be a successful practitioner, an occupational therapist must have proper knowledge for treating diverse populations, including clients who are transgender. However, many occupational therapy (OT) programs do not teach content that is specific to the transgender population. This study utilized a complementary mixed-methods design to determine how prepared occupational therapy students perceived themselves to be for working with transgender clients. Entry-level masters and doctoral level occupational therapy students from accredited OT programs across the United States that had completed at least their first Level II fieldwork were recruited to participate. Eighty-five occupational therapy students completed the quantitative …

Go to article

First Year Occupational Therapy Students’ Engagement In Learning Activities: A Qualitative Study, Mona Asbjørnslett, Helen Bull, Gry Mørk, Tore Bonsaksen Jan 2022

First Year Occupational Therapy Students’ Engagement In Learning Activities: A Qualitative Study, Mona Asbjørnslett, Helen Bull, Gry Mørk, Tore Bonsaksen

Journal of Occupational Therapy Education

When students enter a bachelor program in occupational therapy, they engage in a variety of learning activities. To explore students’ perceptions of learning activities, this qualitative study investigated the experiences of six first year students participating in an occupational therapy study program at a Norwegian university. The students took part in two focus group interviews. The interview analysis focused on meaning and ended up with three main themes: 1) Getting to know each other through collaborative learning activities, 2) Engaging in classroom learning activities, and 3) Approaching the syllabus and doing assignments. The study concludes that early engagement in social …

Go to article

Dynamics Of Mutualism In A Two Prey, One Predator System With Variable Carrying Capacity, Randy Huy Lee Jan 2022

Dynamics Of Mutualism In A Two Prey, One Predator System With Variable Carrying Capacity, Randy Huy Lee

UNF Graduate Theses and Dissertations

We considered the livelihood of two prey species in the presence of a predator species. To understand this phenomenon, we developed and analyzed two mathematical models considering indirect and direct mutualism of two prey species and the influence of one predator species. Both types of mutualism are represented by an increase in the preys' carrying capacities based on direct and indirect interactions between the prey. Because of mutualism, as the death rate parameter of the predator species goes through some critical value, the model shows transcritical bifurcation. Additionally, in the direct mutualism model, as the death rate parameter decreases to …

Go to article

Geographic Range Size As A Predictor Of Dispersal-Dependent Behavioral Traits In Two Clades Of A Terrestrial Salamander, Teah Evers Jan 2022

Geographic Range Size As A Predictor Of Dispersal-Dependent Behavioral Traits In Two Clades Of A Terrestrial Salamander, Teah Evers

Masters Theses

Animal movement has the potential to affect diverse processes within ecology and evolution including range expansion, gene flow, adaptation, and speciation. Two aspects of animal personality that are germane to dispersal are exploratory and aggressive behavior. These behavioral categories may represent a trade-off such that energy invested in territorial defense leaves little energy for movement and dispersal. The Eastern Red-backed Salamander (Plethodon cinereus) is a wide ranging, dispersal limited, terrestrial salamander with well documented phylogeographic divisions. I examined dispersal-relevant behavioral traits within two clades of P. cinereus with disparate geographic ranges. The Northern Clade (NC) has a range extending from …

Go to article

First Prev Next Last