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Nebraska Summary #1298: Fendt 726 Vario Gen 7.1, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary #1294: Fendt 620 Vario, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary #1292: Fendt 616 Vario, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Nebraska Summary #1291: Fendt 614 Vario, Nebraska Tractor Test Lab

Nebraska Tractor Tests

ABOUT THE TEST REPORT AND USE OF THE DATA The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data. EXPLANATION OF THE TEST PROCEDURES Purpose The purpose of …

Cultural Factors In Alcohol And Other Drug Use Among Immigrant Youth In Western Australia: A Qualitative Investigation, Justin Dandy, Caroline Ng Tseung-Wong, Amanda M. George, Byron L. Zamboanga, Vilma Palacios

Psychological Science Faculty Publications and Presentations

Objectives: Our aim was to identify the influence of heritage cultural factors and mainstream Australian cultural norms on young culturally and linguistically diverse (CaLD) immigrants’ alcohol and other drug (AOD) use attitudes, motives for use, and behaviors. Method: We conducted nine focus groups with 55 youth (aged 16–30; 22 female, 33 male). Participants were from diverse cultural backgrounds including India, Sri Lanka, Ethiopia, Eritrea, Sudan, Hazara-Afghanistan, Burma (Chin and Karen), Malaysia, Singapore, and China. They were first- (80%) and second-generation immigrants to Australia. Results: We constructed three overarching themes: bicultural conflict, freedom versus constraints, and the intersection of gender …

Exploring The Effect Of Item Parceling Strategies And Number Of Items Per Parcel On Measurement Invariance Testing In Confirmatory Factor Analysis, Chunhua Cao, Xinya Liang

Psychological Science Faculty Publications and Presentations

Item parceling is common in structural equation modeling used in psychology, especially when the research interest is in the structural relationship between latent factors, but research on its performance in measurement invariance testing is scarce. This study examined the sensitivity of fit measures (LRT, RMSEA, CFI, AIC, BIC, and SaBIC) to measurement noninvariance with different numbers of items per parcel and parceling strategies using a simulation study. The design factors included the location of measurement noninvariance, the magnitude of measurement noninvariance, the proportion of items with measurement noninvariance, sample size, number of items per parcel, and parceling strategies. Results suggested …

Fast-Sparse-Spanner: A Practical Algorithm For Constructing Low-Stretch Sparse Geometric Graphs, Fnu Shariful

UNF Graduate Theses and Dissertations

When constructing geometric graphs (vertices are points and edges are line segments connecting point pairs) on pointsets, stretch-factor (worst-case detour between any point pair) is often considered a quality metric. A low stretch-factor (a quantity that is usually > 1) guarantees short paths between all vertex pairs. A geometric graph having a stretch-factor of t is known as a t-spanner. Creating low stretch-factor geometric graphs for large pointsets with a low number of edges is an open problem in computational geometry.

In this work, we have designed and engineered a new simple and practical (fast and memory-efficient) algorithm named Fast-Sparse-Spanner algorithm …

Spatial And Temporal Patterns In Short-Term Surface Sediment Deposition And Accretion At The Guana Tolomato Matanzas National Estuarine Research Reserve: Implications For Resilience Of Coastal Wetlands To Sea-Level Rise, Jacob Michael Berna

UNF Graduate Theses and Dissertations

Coastal wetlands are at risk of drowning due to the increasing threat of rising sea levels. Wetlands will have to build in elevation vertically or migrate horizontally to survive. Previous research has demonstrated that some wetlands have the potential to naturally build in elevation over time if deposition and accretion rates from allochthonous sediment delivery are substantial, but work in this area has been limited, and many coastal wetlands remain understudied. Portions of Northeast Florida are especially lacking in short-term surface deposition and accretion data. Without surface rates it is difficult to determine the vulnerability of different wetlands to rising …

Traffic Safety In Tacoma: A Dual Study On Community Perceptions Of Vision Zero And The Application Of The Safe System Framework, Janeroza W. Matyenyi

UNF Graduate Theses and Dissertations

The city of Tacoma adopted Vision Zero in 2020 and is planning to achieve zero traffic deaths and severe injuries by 2035. As part of its outreach plan to engage the local community, the city of Tacoma’s Vision Zero team surveyed the critical issues affecting traffic safety as perceived by road users. One of the Vision Zero strategies is to implement safer speeds across streets by reducing speed limits that are too high. This study aims to analyze the factors influencing the perceptions of speeding and high-speed limits as safety concerns, analyze narratives from respondents on issues affecting traffic safety, …

The Role Of Parental Self-Efficacy During The Preschool Years: Links To Parenting Behaviors And Parent-Child Relationship Quality In Dual-Risk Families, Catalina M. Borges

UNF Graduate Theses and Dissertations

Parental self-efficacy (PSE) has been shown to play a critical role in shaping parenting behaviors and parent-child interactions. Examining whether domain-specific PSE like parental self-efficacy helping the child succeed in school (PSEHCSS), influences broad parenting behaviors and parent-child relationships is especially important for families experiencing elevated stress. This secondary analysis explored whether PSEHCSS predicted parenting behaviors and parent-child relationship quality over the preschool years in dual-risk families (i.e., low socioeconomic status and a child with developmental concerns). It was hypothesized that higher PSEHCSS would predict more positive and fewer negative parenting behaviors, and greater parent-child relationship quality; parenting behaviors would …

Forks And Knives And Shower Times: Pro-Environmental Spillover After Emotion Appeals, Shaquille D. Rainge

UNF Graduate Theses and Dissertations

As concerns for climate change continue, pro-environmental behaviors (PEBs) need to be adopted to help combat the rapid changes occurring. The purpose of this field study was to test whether manipulating the reason for performance of an initial behavior (PEB1) can induce positive versus negative spillover to a secondary PEB (PEB2) and to investigate how long the effects of spillover last. The present study had three experimental conditions: baseline condition (no poster), a guilt-inducing poster encouraging selection of a vegan meal (PEB1), and a neutral emotion poster encouraging PEB1. After participating in PEB1 (or not), participants were asked if they …

Dynamics Of Prey-Prey Mutualism With Varying Carrying Capacity And Herd Behavior In The Presence Of Predator, Felix Dela Djokoto

UNF Graduate Theses and Dissertations

This study investigates the dynamics of mutualistic relationships between two prey species in the presence of a predator, by taking into account herding in one species along with the influence of carrying capacities between two prey species. These mutualistic dynamics are presented by constructing two mathematical models, namely an indirect and direct mutualism model. As the strength of the symbiotic relationship increases the indirect model goes through transcritical bifurcation to Hopf bifurcation whereas in the direct mutualism model goes through saddle-node bifurcation to Hopf bifurcation.

Lipschitz Conditions On Operators And Matrices, Ryan Farrell

UNF Graduate Theses and Dissertations

Lipschitz functions on the real line find various applications across mathematics, including in differential equations, optimization, and machine learning. The goal of this thesis is to investigate functions which satisfy certain Lipschitz conditions when ap- plied to operators and matrices. Our study will review two classes of such functions, the class of Operator Lipschitz functions with respect to a given matrix norm, and the class consisting of functions which do not meet Lipschitz conditions in the traditional sense but satisfy inequalities which are Lipschitz in nature – we call such conditions ”Lipschitz-like”. The thesis concludes with a survey of these …

Severe Aggression Among Zoo-Housed Coconut (Trichoglossus Haematodus) And Rainbow (Trichoglossus Moluccanus) Lorikeets: Wellbeing Considerations For Free-Flight Aviaries, Emily Simkins

UNF Graduate Theses and Dissertations

As conservation and education institutions, modern zoos balance the needs of animals with the interests of visitors through several strategies which can increase animal wellbeing and improve visitor experience. Environmental enrichment is frequently employed to increase the suitability of anthropogenic environments for zoo-housed animals, such as through walkthrough habitats and free-flight aviaries. While habitats such as these are important for visitor experience and can be enriching to animals, there are also wellbeing considerations for these spaces. Walkthrough habitats can be a potential source of fear and stress for animals, as shown by increased frequencies of vigilance, undesirable behavior, and aggression. …

Fourier Transformation Of Non-Periodic Functions And Its Application In Computed Tomography, Sabrina Hossain

UNF Graduate Theses and Dissertations

Fourier analysis plays an important role in signal processing and imaging applications,

with computed tomography (CT) being a prominent example. CT imaging relies on recon-

structing cross-sectional images of objects from multiple projections, a process deeply rooted

in the mathematical framework of the Fourier series and its extensions. This thesis explores

the mathematical principle behind CT, demonstrating how periodic and non-periodic func-

tions can be decomposed into sinusoidal components to facilitate image reconstruction. We

begin by reviewing the Fourier series and its ability to represent periodic signals, and then

extend this concept to non-periodic functions through Fourier transforms. The connection …

Leucine Catabolism Is Associated With Longevity In Female Eastern Lubber Grasshoppers, Kerri R. Conklin

UNF Graduate Theses and Dissertations

Background & Aims: Dietary isoleucine restriction can improve metabolic health and increase lifespan. It has been hypothesized that shifts in branched-chain amino acid catabolism drives this longevity effect. Impaired branched-chain amino acid catabolism is linked to several age-related diseases. We investigated whether dietary isoleucine restriction increases leucine catabolism and associates with longevity and full reproduction.

Methods: In two experiments, adult female Eastern Lubber grasshoppers (Romalea microptera) were assigned to either a high-quality diet (Balanced ile), or diets with varying isoleucine content (Moderate ile-R and Severe ile-R). In Experiment 1, we used a low-energy (Low Lettuce) group as a positive …

Understanding Fare Capping In Public Transit: Socioeconomic Predictors And Ridership Outcomes, Maige Majuto

UNF Graduate Theses and Dissertations

Fare capping is a transit policy that limits how much a rider pays within a certain period, after which all rides are free for the rest of that period. Fare capping has become a potential strategy to reverse the trend of declining transit ridership, which has been caused by factors like fare increases, service reductions, and shifts in travel behavior. While demographic and socioeconomic characteristics are known to influence ridership, their role in fare capping adoption remains underexplored. This study examines how factors like age, income, race, education, and car ownership affect fare capping adoption at the neighborhood level and …

Investigating The Roles Of Intrinsic Point Defects And Transition Metal Doping In Monolayer And Bulk Tis2, Patrick J. Keeney

UNF Graduate Theses and Dissertations

Within this thesis, the magnetic and electronic properties of various 1T-TiS₂ systems are thoroughly examined using density functional theory (DFT) and scanning tunneling microscopy (STM). Formation energies and electronic implications of intrinsic point defects in bulk TiS₂ and monolayer TiS₂ are analyzed by approximating a computational monolayer of TiS₂ as the surface layer of a bulk sample. This approximation is validated given that intralayer covalent bonding dominates interlayer van der Waals interactions. We conclude that the most energetically favorable intrinsic defects are Ti atoms settling above the outermost S plane and S vacancies. In addition, the …

Rodcast Interaction: A Novel Technique For Dense Virtual Reality Environments, Nevzat U. Demirseren

UNF Graduate Theses and Dissertations

Virtual Reality (VR) technologies continue to grow in popularity and application versatility, yet effective interaction within complex dense environments remains as a critical challenge. In particular, users with low level of VR experience often face decreased accuracy and dissatisfaction selecting occluded objects. A variety of interaction techniques to select and manipulate objects exist, but there is a research gap in understanding what kinds of techniques support users in dense environments. This study evaluates the user performance and preference in such environments. Three interaction techniques are examined in this study: Go-Go Hand, Flower Cone, and a proposed technique called RodCast Interaction. …

Understanding Shifts In Student Satisfaction Between Peak And Post Pandemic, Brian Verkamp

UNF Graduate Theses and Dissertations

This study investigates student satisfaction in online learning environments at the University of North Florida (UNF), with a focus on how satisfaction levels have fluctuated between the peak-pandemic and post-pandemic periods. Utilizing a combination of descriptive and inferential statistical techniques, the research examines the relative importance and satisfaction ratings of various educational factors, including demographic influences such as gender, race, and academic program. By creating a composite measure of overall student satisfaction, this study provides a comprehensive analysis of the factors that most significantly impact student experiences in online courses. Findings highlight the critical role of both satisfaction and importance …

Diversity Makes Me Uncomfortable: Effects Of Diversity Language On University Student Belonging, Ziena Baker

UNF Graduate Theses and Dissertations

Diversity statements and experiences form the first impressions students have of their prospective universities and employers, setting the stage for perceived feelings of belonging, otherness, and comfort within new environments (Baleria, 2021; O’Keeffe, 2013; Starck et al., 2021). Diversity statements can signal feelings of comfort and belonging or feelings of stress depending on the way in which diversity is framed (Chaney, 2022; Trawalter et al., 2016). This is especially true for students, who are more often affected mentally and physically by changes in university diversity perspectives (Sladek et al., 2021) The current study thus uses a novel blood pressure measure …

What’S For Dinner? A Multi-Pronged Approach Investigating The Foraging Habits And Diet Of St. Johns River Bottlenose Dolphins (Tursiops Erebennus), Andrea Leigh Swinehart

UNF Graduate Theses and Dissertations

Wildlife population management depends on knowledge of the population’s foraging ecology. A community of resident Tamanend’s bottlenose dolphins (Tursiops erebennus) utilizes the St. Johns River (SJR) in Jacksonville, Florida, and members of the community are regularly sighted emaciated or with skin lesions. Anthropogenic disturbances may contribute to further health decline, therefore Chapter One analyzed SJR foraging dolphin group habitat use before, during, and after a large-scale dredging event known as the Jacksonville Harbor Deepening Project (JHDP). Kernel density estimates (KDEs) of foraging dolphin group sightings were generated to estimate 95% utilization distributions (i.e., foraging home ranges) for three …

Bifurcation And Index Theory With Applications To Nonlinear Differential Equations, Asrafi Yesmin

UNF Graduate Theses and Dissertations

This thesis presents a rigorous framework for the study of bifurcation phenomena in nonlinear differential equations. Semigroup theory and index theory are introduced to examine qualitative changes in the solution structures of the nonlinear dynamic system as the parameters vary. The theoretical framework is then applied to several nonlinear differential equations from biology and physics.

Frustrated Quantum Magnetism: The Interplay Of Isotropic And Anisotropic Interactions With Application To Α-Rucl3, Evan M. Wilson

UNF Graduate Theses and Dissertations

We investigate how anisotropic spin interactions, including Dzyaloshinskii–Moriya and Kitaev terms, manifest across quantum spin systems ranging from a single S = 1/2 dimer to molecular spin clusters and layered magnetic materials. Beginning with an exact analysis of the spin dimer, we demonstrate how singlet–triplet mixing induced by Dzyaloshinskii–Moriya interaction directly influences both thermodynamic observables and inelastic neutron scattering spectra. These microscopic fingerprints are then extended to trimer, tetramer, and tetrahedron geometries, where field-induced phase transitions and heat capacity anomalies reveal the interplay between isotropic Heisenberg and anisotropic Kitaev exchanges. In the frustrated zigzag honeycomb lattice, we show that a …

Niobium Titanium Nitride Thin Film Deposition, Optimization, And Characterization, Hudson Horne

UNF Graduate Theses and Dissertations

Superconducting thin film devices such as Josephson junctions are a staple of cutting-edge quantum and classical computing architectures. Functional devices require optimized materials with properties suited to the device application; properties like superconducting critical temperature, critical current density, resistivity, and surface roughness are important depending on the intended device application. Niobium titanium nitride (NbTiN), a fcc transition metal nitride, is a promising material for these applications, with a superconducting critical temperature among the highest of the superconductors described by Bardeen, Cooper, and Schreiffer (BCS) theory. NbTiN has excellent mechanical and electrical characteristics and is easily deposited via reactive magnetron sputtering …

The Presence Of Mercury (Hg) And Perfluoroalkyl Substances (Pfas) In The Guana And Tolomato Rivers, Morgan E. Lattomus

UNF Graduate Theses and Dissertations

The Guana and Tolomato Rivers provide essential habitat for several ecologically and economically important species and is a well-loved and recreated area. Spanning the northeastern Florida coast, the rivers are home to over 50 endangered or threatened species and host several habitat restoration projects due to their ecological significance and proximity to development along the coast. The effects of human influence and pollution, and specifically toxic metal mercury (Hg) and perfluoroalkyl substances (PFAS), are not well known within the system. Hg is known to biomagnify within food webs, and there is a considerable lack of literature concerning PFAS behavior within …

Assessment Of Wave Climate Conditions At An Important Historical And Ecological Site Along The Fort George River In Northeast Florida, Ally O. Kasuwi

UNF Graduate Theses and Dissertations

This study investigated wave climate conditions at the Timucuan Preserve in northeast Florida, addressing gaps in previous shoreline erosion research that largely attributed erosion to boat wakes without detailed wave data. Field data were collected using several do-it-yourself water wave gauges. Each data collection event was for approximately one week, with an emphasis on collecting data before, during, and after periods of expected peak wave activity (i.e., holiday weekends and large-scale storms). Data were analyzed in the frequency domain to establish the likely cause of waves. Results suggested that, counterintuitively, watercraft traffic may have produced higher dominant wave periods than …

Connecting Bicyclists And Transit: A Multimodal Routing Tool With Bicycle Facilities Scoring, Raphael Y. Mrema

UNF Graduate Theses and Dissertations

This research develops a comprehensive, data-driven framework for assessing multimodal bicycle accessibility using open-source technologies and real-time routing data. Traditional active transportation studies often depend on proprietary GIS tools and static network datasets, which limit scalability, reproducibility, and integration with live mobility systems. In contrast, this study introduces a Python-based approach that leverages GeoPandas, the Google Maps Directions API, and General Transit Feed Specification (GTFS) data to dynamically evaluate infrastructure quality, operational stress, and multimodal connectivity. The framework was applied to Duval County, Florida, to examine how roadway design, facility type, and transit availability jointly influence bicycle network performance and …

Polynomial Invariants For Classical Invariant Groups, John Diller

UNF Graduate Theses and Dissertations

The classical invariant theory of matrix groups plays a fundamental role in modern algebra and geometry, with origins in Hilbert’s Fourteenth Problem concerning the finite generation of rings of invariants. In this thesis, we study polynomial functions on spaces of matrices and investigate their invariants under natural actions of classical groups. After recalling the geometric and algebraic motivations behind Hilbert’s question, we focus on invariants for several complex Lie groups, including the general linear group GL(V), the symplectic group Sp(V), the orthogonal group O(V), and the special orthogonal group SO(V). Building on foundational work of Hermann Weyl and a modern …

Faculty Involvement In Decision-Making Within Florida's State University System: Understanding Perception, Role, And Participation In Shared Governance, Elaine R. Mitchum

UNF Graduate Theses and Dissertations

Shared governance is the collaborative responsibility of faculty, administrators, and governing boards to guide institutional decision-making in colleges and universities. Faculty participation is essential in high-stakes decisions, as their disciplinary expertise and practical experience help ensure that policies align with academic values and long-term institutional goals. This qualitative case study examines faculty perceptions, roles, and participation in shared governance across the twelve institutions within the State University System (SUS) of Florida. Guided by four research questions, the study explored: (1) how faculty describe shared governance; (2) how perceptions of their role vary; (3) how recent events within the Florida SUS …