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0544a New Ridge-Type Estimator For The Gamma Regression Model, Zakariya Yahya Algamal, Ahmed Maher Salih, Mundher Abdullah Khaleel

Iraqi Journal for Computer Science and Mathematics

When there is collinearity among the regressors in gamma regression models, we present a new two-parameter ridge estimator in this study. We look into the new estimator's mean squared error characteristics. Additionally, we offer several theorems to contrast the new estimators with the current ones. To compare the estimatorsunder various collinearity designs in terms of mean squared error, we run a Monte Carlo simulation analysis. We also offer a real data application to demonstrate the usefulness of the new estimator. The results from simulations and actual data reveal thatthe proposed estimator is superior to competing estimators.

The Choice Is Hers: Floral Preference And Habitat Use Of Early Season Queen Bumble Bees In Restored Ecosystems, Kathryn E. Mccabe

Graduate Research Theses & Dissertations

Restored ecosystems play a vital role in providing a sanctuary for native flora and fauna, offering crucial habitat and resources for many at-risk and declining taxa. Ensuring optimal functionality of these restorations is essential to supporting taxon like bumble bees. While many studies have focused on understanding the needs of bumble bees, much of this effort has relied on information gathered during their peak foraging season when workers are abundant, thus, neglecting other critical life stages, such as emerging spring queens. In this study, I investigated how spring queen bumble bees use three types of restored habitats (woodland, edge, and …

Perceptions Of Lightboard Videos On Engineering Students' Engagement For Learning: A Mixed-Methods Case Study, Rana Sanyal

Graduate Research Theses & Dissertations

Purpose. Researchers have recommended using comprehensive visual materials in engineering courses, as visuals instill more information in students than auditory information and they have the ability to engage students more effectively than other types of content and to convey the nuances of non-verbal communication. The purpose of this study was to explore the perceptions of engineering students on incorporating technologically advanced video course materials (TAVCM) created with lightboard technology on their engagement in learning. Theoretical Framework. The theoretical framework was based upon an integrative learning environment that incorporated many theories of cognitive learning. The Cognitive Theory of Multimedia Learning (CTML) …

Genetic Engineering Of Escherichia Coli For The Production Of Riboflavin, Adeyemi Adesanwo

Graduate Research Theses & Dissertations

Riboflavin, a water-soluble vitamin B2, is essential for the growth and reproduction of living organisms. However, humans and animals lack a riboflavin synthesis pathway and must rely on diets derived from plants and microbes for this essential vitamin. To meet our needs for vitamin B2, industrial riboflavin production is currently being pursued using strains of Bacillus subtilis. The fermentation process is successful, but improvements are needed for better substrate-to-product conversion yield. To this end, it is imperative to develop alternative microbial strains for cost-effective riboflavin production.

Due to its simple growth requirement, well-understood genetic background, and widely available genetic tools, …

Adhd Symptoms As A Moderator For The Relationship Between Childhood Maltreatment And Adolescent Delinquency, Demy Alfonso

Graduate Research Theses & Dissertations

Childhood maltreatment (i.e., physical abuse, emotional abuse, and neglect) has consistently been shown to be a significant predictor of engagement in subsequent delinquent behaviors during adolescence. ADHD symptoms have also been shown to be both a risk factor for experiencing childhood maltreatment, as well as a potential consequence of having been exposed to maltreatment. Additionally, concurrent symptoms of ADHD and experiences of maltreatment are significantly associated. ADHD symptoms have also been shown to be related to delinquency. Further, research has found that the prevalence of these difficulties (e.g., ADHD symptoms, delinquent behaviors) may differ according to an individual’s gender. The …

Analyzing Sex Differences In Human Performance Through 3d Isotonic Resistance, Jacob M. Cunha

University of the Pacific Theses and Dissertations

Appraisal of scientific literature and understanding continues to grow in the domain of human performance. The effects of sex on concentric resistance training and power output are not well understood. Recent advancements in technology permit more precise measurements of force output and the kinematic changes elicited by training stress. A unique device in capturing kinematic performance output is Proteus Motion. The machine produces an external magnetic load through a protruding apparatus connected to a gyrosphere, which in turn captures concentric movement through all three planes of movement (sagittal, coronal, transversal). The aim of this study is to investigate power output …

Roles Of Ppp1r15a (Gadd34) And Ppp1r15b (Crep) In Er Stress-Induced Apoptosis In Zebrafish Caudal Fin Epidermal Cells, Ayano Ohata

University of the Pacific Theses and Dissertations

ER stress occurs in response to the accumulation of unfolded or misfolded proteins in the ER lumen, subsequently activating three signal transduction pathways collectively called the unfolded protein response (UPR). Although the goal of the UPR is to restore ER homeostasis, it can result in apoptosis when ER stress is too severe or prolonged. CHOP, which is induced by all three branches of the UPR, is central to inducing ER stress-induced apoptosis by regulating the expression of numerous pro-apoptotic genes. One of the downstream targets of CHOP is GADD34, which contributes to PP1-mediated dephosphorylation of eIF2α together with its homolog …

Synthesis Of Hydroxycinnamate Derivatives And Characterization Of Bioactivity As Radical Scavengers And Α-Glucosidase Inhibitors, Cate Simmermaker

University of the Pacific Theses and Dissertations

Hydroxycinnamic acids (HCAs), a class of polyphenols commonly found in regularly consumed fruits and vegetables, have been investigated for efficacy as radical scavengers and glycosidase inhibitors. These compounds could mitigate the negative health effects of free radicals in oxidative stress diseases including neurodegeneration, cancer and diabetes. The HCAs investigated were caffeic acid (1), p-coumaric acid (2), ferulic acid (3), and sinapic acid (4). The compounds were derivatized with synthetically prepared amino acid esters through a four-step synthesis including protective acetylation, chlorination of the carboxylic acid, amidation, and subsequent deprotection of all applied protecting groups. The inclusion of diverse derivative groups …

Close To The Pain: Alternative Education And The Unheard Voices Of Young Adults’ Transformative Learning Experiences, Vicki Lynn Lock

University of the Pacific Theses and Dissertations

This dissertation focuses on amplifying the voices of marginalized students in alternative education, with an emphasis on the positive impact of resilience on their outcomes. The study addresses the challenges these students face, particularly those from BIPOC communities, in navigating educational systems that have historically marginalized them. The purpose of this qualitative research was to explore the experiences of BIPOC students in a Central Valley alternative education program, highlighting how nurturing relationships, resilience, and the fulfillment of basic needs contribute to their academic success and personal growth. Utilizing a framework that incorporates theories of resilience, educational equity, and transformative leadership, …

Softening And Cross-Susceptibility: Exposure To Heat And Desiccation Reduces Future Stress Tolerance In An Insect, Lauren Harter

University of the Pacific Theses and Dissertations

The frequency and duration of environmental stressors, such as heat waves and drought, will continue to grow due to ongoing climate change, thereby increasing the likelihood that organisms will experience stressors consecutively. Exposure to one stressor can improve or impair future tolerance to the same stressor (i.e., hardening or softening, respectively), or enhance or reduce future tolerance to a different stressor (i.e., cross-protection or cross-susceptibility, respectively). Understanding whether stress improves or impairs animals’ abilities to withstand future stressors is critical for determining the physiological sensitivity of animals to ongoing climate change. Here, I evaluated the responses to consecutive heat and …

Volume 15, Connor Thompson, Emily Steffenhagen, Emily Robertson, Luis Fernando Dos Reis, Emily Farmer, Samuel Villa, Robert Allison, Zachary Chessor, Megan Borden, Austin Burnett, Larry W. Grant Jr., Tristan Marowski, Emma Moore, Pearl Siff

Incite: The Journal of Undergraduate Scholarship

Introduction Dr. Amorette Barber, Director, Office of Student Research

From the Editor Dr. Hannah Dudley-Shotwell

Artist’s Statement Connor Thompson

On Mentorship Dr. John Miller

The Meat of the Matter: Alien, Human, and Animal in Terry Bisson’s “They’re Made Out of Meat” by Emily Steffenhagen

“Please REBLOG!”: An Ethical Analysis of Doxxing, Internet Vigilantism and Racists Getting Fired by Emily Robertson

Journaling: Paper Has More Patience Than People by Luis Fernando Dos Reis

The Effects of Climate Change on the Archaeological World by Emily Farmer

Lowered Seat Height Does Not Impair Wingate Performance in Untrained Cyclists by Samuel Villa, Robert Allison, …

Deconstruction Of Body Representation Of The Back In Healthy Back Pain-Free Individuals And People With Chronic Low Back Pain, Simon Pratt

Theses

Changes in various body representations have been increasingly investigated and subsequently posited to be potentially important factors in the development and maintenance of chronic low back pain. Three main domains of body representation are considered here: body model, body schema (comprising superficial and postural schema), and body image. Most studies informing our contemporary understanding of these body representations have been undertaken in areas such as the hand and forearm, with a comparative dearth of studies performed on the low back. Consequently, this thesis consists of a comprehensive investigation of body representation initially in healthy back pain-free individuals and then in …

Lived Experiences Of Former Secondary School Students With Attention Deficit Hyperactivity Disorder: A Phenomenological Study, Dinoshi Sajivini Keiper

Theses

This study was an exploration of the lived experiences of students with ADHD in the Australian secondary school classroom in identifying factors influencing their learning outcomes. Students with ADHD face short-term issues, such as strained relationships with teachers, peers, and parents, a lack of relatedness and engagement with school, late arrival and absenteeism, and high drop-out rates, leading to poor academic outcomes (Dembo et al., 2016; Fried et al., 2016). In the long-term, their poor academic achievements have led to many other negative outcomes including psychological conditions, under-employment, substance abuse, criminality, and an overall poorer quality of life, causing significant …

Teachers’ Perspectives And Practices For Ameliorating Dysregulation In School-Aged Children Through Trauma-Informed Education Practice, Linda Lane

Theses

The research investigates Western Australian (WA) teachers’ understanding of the impact of trauma-informed education practice. The main research question, which forms the basis of the study, is How do the trauma-informed education practices, currently being used in Western Australian public schools, impact the capacity of children to self-regulate their behaviour? The literature examines the impact of unresolved trauma on the developing child and reviews the trauma-informed education practices that are designed to ameliorate the negative effects of trauma. The research also investigates the trauma-informed practices that are currently being used in WA public school classrooms, as described by teachers, and …

The Cumulative Incidence And Site Of Recurrent Metastatic Breast Cancer And Post-Metastasis Survival Of Females With An Initial Diagnosis Of Non-Metastatic Breast Cancer In New South Wales, Sarah Jane Lord

Theses

This dissertation aimed to investigate the population-level incidence, site, and survival of recurrent metastatic breast cancer (rMBC) occurring after stage I−III breast cancer, and changes over time. Breast cancer mortality has declined over the last 30 years due to advances in screening, diagnosis, and treatment. However, the impact of improved cancer care on rMBC is not yet well understood because cancer registries do not routinely report on cancer recurrence (Chapter 1). A systematic review of 20 population-based studies provided evidence of improvements in survival for people with de novo metastatic breast cancer (stage IV at diagnosis) since 1995 in high-income …

An Investigation Into The Nature Of The Knee Pain Experience In People With Knee Osteoarthritis, Gemma Mary Orange

Theses

Knee osteoarthritis poses a substantial and escalating socioeconomic burden globally, exacerbated by demographic trends towards an aging population, sedentary lifestyles and increasing obesity rates. Defined by knee pain and functional limitations (Wood et al., 2023; Zhang, Doherty, et al., 2010), traditional approaches have viewed knee OA related pain and disability primarily through a biomedical lens, linking symptoms directly to structural damage and advocating surgical interventions such as total knee arthroplasty to address presumed causative pathology (Bunzli et al., 2019; Darlow et al., 2018). Despite the capacity of surgery to ameliorate structural pathology, patient centred outcomes vary considerably. Up to 30% …

The Impact Of Treatment Dosage On Cognitive-Linguistic Outcomes Of Patients With Aphasia: An Investigation Of Three Service Delivery Models, Adele J. Derendinger

Graduate Student Theses, Dissertations, & Professional Papers

This study addresses the gap in literature by directly comparing the effectiveness of Intensive Comprehensive Aphasia Programs (ICAPs) and modified ICAPs (mICAPs) to usual care service delivery models for people with aphasia. Through a prospective study design, cognitive-linguistic function change scores across different service delivery models were examined. The findings reveal significant within-group improvements in cognitive-linguistic function for participants in ICAPs, with some improvement seen in mICAPs and usual care conditions. Intensive models demonstrated greater improvement compared to non-intensive usual care models, particularly evident in the Western Aphasia Battery – Revised and the Boston Naming Test – Second Edition. …

The Effects Of Beaver Dam Anaolgs On Linked Aquatic-Terrestrial Communities In Western Headwater Streams, Michelle Elyse Fillion, Benjamin P. Colman, Rachel L. Malison

Graduate Student Theses, Dissertations, & Professional Papers

In response to stream degradation resulting from the near eradication of American Beavers (Castor canadensis), managers of freshwater systems have turned to using beaver dam analogs (BDAs) as one means of restoring waterways from stream and riparian degradation. Though BDAs have been shown to restore physical traits of riparian areas, their influence on macroinvertebrates and linked aquatic-terrestrial systems is not well understood. To examine how BDAs influence aquatic habitats, macroinvertebrate communities, and riparian insectivores, we compared unrestored reference stream segments to BDA-restored segments with 7-14 BDAs in three western Montana headwater streams. We collected physical stream measurements and quantitative samples …

Structural And Functional Analysis Of Glun2a-Selective Negative Allosteric Modulators, James Scott Lotti

Graduate Student Theses, Dissertations, & Professional Papers

NMDA-type ionotropic glutamate receptors are widely expressed throughout the central nervous system and are critically involved in many healthy neuronal processes. Dysregulation of NMDA receptor activity underlies many disease pathologies, several of which benefit from treatment with antagonists, such as the FDA-approved channel blockers ketamine, memantine, and adamantine. NMDA receptors are composed of two glycine-binding GluN1 subunits and two glutamate-binding GluN2A-D subunits. The GluN2A-D subunits display distinct regional and developmental expression patterns, enabling region- or cell type-specific targeting of NMDA receptors through subunit-selective pharmacological intervention. There are several classes of subunit-selective negative allosteric NMDA receptor modulators, but the mechanisms of …

Perspectives On Using Pharmacogenomics To Guide Tobacco Cessation: Survey Results From An American Indian Community, Daniela Mariana Wall

Graduate Student Theses, Dissertations, & Professional Papers

Pharmacogenomics research has predominantly focused on populations of European ancestry, limiting the application for diverse populations such as American Indian and Alaska Native (AIAN) communities. Our community-centric study aims to understand perspectives of utilizing pharmacogenomics to guide tobacco cessation in an AIAN community using a survey with qualitative and quantitative components. We assessed participant (n=273) tobacco usage and cessation history, pharmacogenomics knowledge, and perceptions of utilizing pharmacogenomics in the context of tobacco cessation. We found that the majority of participants (92%) were aware of risks associated with tobacco usage and believe it to be a problem within their community (76%). …

Understanding Cellular Dynamics: Investigating A Yeast-Two Hybrid Protein-Protein Interaction, Riok3:Cse1l; Also By Investigating Trogocytosis Of Cd4+ T Cells From Rhog-/- Mice, Brittnee N. Crane

Graduate Student Theses, Dissertations, & Professional Papers

Rift Valley fever virus (RVFV) is a negative-sense virus that was first described in 1930 when it was isolated from sheep during an outbreak. In the last 25 years there has been a spread in the geographical range into the Middle East. The most susceptible animals are cattle, goats, sheep, and camels. The most overt symptom of livestock infection is that infected pregnant animals experience spontaneous abortion. Humans are susceptible as well and symptoms range from mild febrile illness to liver necrosis, blindness, hemorrhagic fever, and death. An important player in the cellular innate response to RVFV infections is the …

Temporal And Spatial Connectivity And The Impacts Of Hydropower In The Magdalena River Basin, Colombia, Serena Lynn Butler

Graduate Student Theses, Dissertations, & Professional Papers

Tropical regions hold untapped hydropower potential, but dam construction often adversely impacts multiple dimensions of connectivity in river systems, rigorous evaluation of which is often lacking. This study investigates temporal and spatial dimensions of longitudinal and lateral connectivity in the Magdalena River Basin, Colombia, a region with ongoing and planned hydropower projects. Limited in-situ monitoring data is a common challenge in tropical rivers. To address this, we utilized satellite imagery from Landsat (via Google Earth Engine) and Surface Water and Ocean Topography (SWOT) data. We examined alterations in the flow regime over time and relative to dam construction. We also …

Turbulence Resistant Schools: A Qualitative Phenomenological Study Of Educational Leadership In Central And Eastern Europe, Sofia Reis

Graduate Student Theses, Dissertations, & Professional Papers

The expanding complexity and increasing disruptions of our world affects schools. During both stable and unstable times, successful educational leaders support their schools’ ability to accomplish their core mission: student learning and development. Using a qualitative approach, this research explored experiences of educational leaders who established schools in Central and Eastern Europe during the post-Soviet era and continue leading them to this day. The central question was: What is the lived experience of successful assertive educational leaders as they navigate extreme turbulence? In this study, leadership is understood as a collegial activity determined by the context where it is embedded, …

Resilience, Adaptability, And Transformation: School Principal’S Response To Critical Events, Justine Jean Alberts

Graduate Student Theses, Dissertations, & Professional Papers

School principals face critical events as part of their professional roles. These critical events can profoundly impact their ability to lead, which is why this phenomenological study explored the central question, how do principals experience critical events that include perceived trauma? Using Moustakas’ (1994) process of transcendental phenomenological analysis, this research investigated the multifaceted emotional, professional, and personal responses of these educational leaders, revealing the complexities and consequences of their experiences. Semistructured interviews with fourteen current and former principals provided rich, in-depth qualitative data that captured the essence of their experiences. Findings indicated that principals often transition from their day-to-day …

Evaluating Early-Life Characteristics And Responses Of Native Plant Materials For Dryland Restoration, Sophia N. Lasche

Graduate Student Theses, Dissertations, & Professional Papers

Globally, many drylands are in need of restoration due to anthropogenic land use changes, climate change-related biodiversity loss, and broad scale degradation. Within this degradation framework, many perennial grass species and populations have been lost from drylands. A common method of restoring vital perennial grass populations is through seed-based restoration. Using seed-based restoration, or the act of adding desirable seed to a system to restore plant populations, requires a depth of knowledge on species level responses, as well as seed sources within those species. My research examines three workhorse perennial grass species and associated seed sources for dryland restoration, especially …

Acute Toxicity Of Chlorpyrifos On The Freshwater Bivalves (Unio Tigridis) And Effects On Bioindicators, Nihal Suhail Hanna, Yahya Ahmed Shekha

Baghdad Science Journal

A freshwater bivalve plays a crucial function in aquatic habitats as the filtered water and burrowing mussels mix the sediment, thus increasing oxygen content and making the ecosystem healthier. The aim of the study is to see how chlorpyrifos affects biochemical markers in freshwater mussel Unio tigridis. About 180 individuals per taxon and water samples were collected from the Qandil water resource on the Greater Zab River, Erbil Province, Iraq. Once arrived at the lab, the individuals were kept in aquaria with river water and an air-conditioned room Temperature: 25±2 and Light: 12h/12h and acclimatized to laboratory conditions for seven …

The Evaluation Of Semen Extraction Efficiency And Recovery From Reusable Menstrual Underwear, Caitlyn Spencer

Master of Science in Forensic Science Directed Research Projects

A new type of undergarment and feminine product is being submitted to crime laboratories as evidence for sexual assaults: menstrual underwear is underwear that have absorbency and leak-proof abilities and can be washed and re-worn multiple times. The goal of this research was to determine if semen and sufficient DNA could be recovered from reusable menstrual underwear and used to obtain quality DNA profiles. Three menstrual underwear brands of Hanes, Knix, and Thinx were evaluated. Simulated post-coital samples were deposited onto three pairs of each brand of underwear. One pair of each brand was analyzed unwashed, another set was washed …

A Comparison Of Particulate Collection Methods Using Fluorescent Polyethylene Beads And An Introduction To The Use Of A Pulse Lavage For Particulate Evidence Collection, Madison E. Smith

Master of Science in Forensic Science Directed Research Projects

Using fluorescent polyethylene beads as an analog for trace particulates, five evidence collection techniques were compared to determine their efficacy by the percentages collected and recovered from the initial deposition. The efficacy of each method based on the particle’s size was also assessed. Finally, each method underwent a cost-benefit analysis to evaluate the financial toll that each technique would take on the performing agency.

Trace particulate evidence such as glass fragments, soil, or pollen can establish contextual links between scenes, victims, and suspects. To improve the collection of this evidence, swabbing, tape lifts, dry vacuuming, and pulse lavaging were assessed …

The Determination Of Ethanol And Phosphatidylethanol (Peth) In Donated Packed Red Blood Cells, Jordan E. Keller

Master of Science in Forensic Science Directed Research Projects

This research investigates the safety and reliability of blood donations by examining the presence of ethanol and phosphatidylethanol (PEth) in packed red blood cells (pRBCs). As blood donation is integral to healthcare, ensuring the safety of blood products is paramount. Current protocols focus on screening for infectious diseases, such as hepatitis C and human immunodeficiency virus (HIV), but do not routinely asses alcohol consumption, which can significantly impact patient outcomes. As a direct indicator of alcohol consumption, ethanol can affect blood quality, interfere with medical treatments, and present legal issues, such as false conclusions or assumptions. Ethanol detection methods include …

Spin Wave Devices For Embedded Applications And Information Processing, Raisa Fabiha

Theses and Dissertations

Device miniaturization is a prerequisite for modern day electronics. Spintronics offers immense potential in energy efficient data storage, solid states devices, ultrafast computing and other electronic applications because of their low power consumption, non-volatile nature and unique activation mechanism. The conventional nano-antennas used for wireless communication, biomedical and wearable devices and IoT applications are limited by the traditional Harrington limit. As we attempt to miniaturize the antenna size beyond its emitted wavelength (also called “subwavelength” antenna), its gain and efficiency plummet. To overcome this challenge, the researchers have proposed magnetoelectric antennas. The ultra-thin film based magnetoelastic antennas suffer from eddy …