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Articles 159931 - 159960 of 5209480
Full-Text Articles in Entire DC Network
Resource Assessment Report No. 04: North Coast Demersal Scalefish Resource - Kimberley 2025 Assessment, Fabian Trinnie, Rubie Evans-Powell, Ainslie Denham, Sybrand A. Hesp, Corey Wakefield, Craig L. Skepper, Brett Crisafulli, Stephen J. Newman
Resource Assessment Report No. 04: North Coast Demersal Scalefish Resource - Kimberley 2025 Assessment, Fabian Trinnie, Rubie Evans-Powell, Ainslie Denham, Sybrand A. Hesp, Corey Wakefield, Craig L. Skepper, Brett Crisafulli, Stephen J. Newman
Resource Assessment Reports
The North Coast Demersal Scalefish Resource (NCDSR) comprises ecological suites of tropical demersal fish species that occur predominantly in inshore waters (20–250 m deep) and offshore waters ( > 250 m deep) of the North Coast Bioregion (NCB). More than 60 demersal species are landed by fisheries operating in the Kimberley and Pilbara regions of the NCB each year, including high-value snappers (Lutjanidae), groupers (Epinephelidae), and emperors (Lethrinidae). As outlined in the NCDSR Harvest Strategy (DPIRD, 2017), the Kimberley resource is currently monitored through annual reviews of total removals and catch rate trends of indicator species, as well as periodic (every …
A Word From The Writing Team (September 2025), Pam Walter, Mfa
A Word From The Writing Team (September 2025), Pam Walter, Mfa
A Word From the Writing Team (Newsletter)
This issue includes:
- Our New Editor!
- Publications Spotlight
- Check out these Free Workshops Wiley is Offering in September
- Sign up for the First Friday Writing Retreat (Online)
- Did you Know Jefferson Provides Funding Support for Article Processing Charges (APC)?
If You Take Care Of Me, I’Ll Take Care Of You: The Mutual Gains Of Parental Support For Employee And Organizational Well-Being, Cara-Lynn Scheuer, Angela R. Grotto, Jessica L. Doll
If You Take Care Of Me, I’Ll Take Care Of You: The Mutual Gains Of Parental Support For Employee And Organizational Well-Being, Cara-Lynn Scheuer, Angela R. Grotto, Jessica L. Doll
Department of Management Faculty Scholarship and Creative Works
As the number of working parents rises, employers are increasingly called upon to support employees’ work–family (WF) obligations. Grounded in conservation of resources theory, we examined how providing varying degrees of parental support (paid vs. unpaid leave and family-supportive vs. -unsupportive leadership) is mutually beneficial to employee and organizational well-being – the ultimate criterion for organizational science. Participants (N = 538) were randomly assigned to read vignettes that varied the amount of parental support provided for expectant working parents. We tested whether WF benefits fairness perceptions moderated the indirect effects of parental support on felt obligation through job-related anxiety. Findings …
A Novel “Stairstep” Approach To The Management Of Extreme Hypernatremia Using Continuous Kidney Replacement Therapy And Hypertonic Saline, Bahar Barani, Xuexin Lu, Darcy Weidemann, Judith Vansickle, Vimal Chadha, Nathan Beins
A Novel “Stairstep” Approach To The Management Of Extreme Hypernatremia Using Continuous Kidney Replacement Therapy And Hypertonic Saline, Bahar Barani, Xuexin Lu, Darcy Weidemann, Judith Vansickle, Vimal Chadha, Nathan Beins
Posters
Hypernatremia is defined as a serum sodium greater than 145 mEq/L and is due to either a deficit of free water or excess sodium intake. Extreme hypernatremia (sodium level > 190 mEq/L) is immediately life–threatening with mortality rates > 60%. It is especially challenging to avoid complications, such as permanent neurological injury, respiratory failure, and profound electrolyte derangement, when children are in kidney failure. Established guidelines are lacking for correcting such extreme levels due to a paucity of information in the literature, although general recommendations are to decrease levels by no more than 10-12 mEq/L per day to prevent neurological complications. We …
Recombinant Erythropoietin Use For Anemia Of Prematurity: A Three Year Since Center Experience, Hannah Darland, Krishna Dummula, Chaitali Mahajan, Vishal Pandey
Recombinant Erythropoietin Use For Anemia Of Prematurity: A Three Year Since Center Experience, Hannah Darland, Krishna Dummula, Chaitali Mahajan, Vishal Pandey
Posters
Background: Anemia is a common disorder of prematurity secondary to limited blood volume, excessive blood draws, inadequate nutrition, poor iron reserves, and insufficient endogenous erythropoietin. While many NICUs use recombinant erythropoietin (rEpo) to treat anemia of prematurity, the absence of universal guidelines has led to variability in dosing and schedules. Here we present our experience on the use of rEpo in a level 3 NICU. Our unit protocol uses 400 IU/kg three times a week for a total of 9 doses if hematocrit < 30%. Objectives: The purpose of this study was to evaluate the response to rEpo in infants with anemia of prematurity. Methods: Charts of infants born between 2018 and 2020 with gestation ≤34 weeks who received rEpo for anemia of prematurity were retrospectively reviewed. We defined response to therapy as an increase of hematocrit by 5% from pre-treatment baseline. Infants who did not achieve the therapeutic goal or who received blood transfusions were considered non-responders. Neutropenia, thrombocytopenia, and retinopathy of prematurity (ROP) requiring treatment were treated as adverse events. Results: A total of 44 infants were treated with rEpo during the study period. Clinical characteristics are described in Table I. Average hematocrit at birth was 44.8±7.5 (32.7 to 60.8). Infants were started on rEPO at a median corrected age of 33.3 ±3 weeks and a weight of 1674±622 g. Average DOL was 37±18 at initiation of therapy. Average baseline hematocrit at the start of therapy was 27.9±1.8%. 80% of patients (35/44) responded with increase of hematocrit by >5%, 20% (9/44) did not respond. 75% of infants (33/44) received all 9 doses. 11 patients received …
No Suspicion For Nocarh: A Cautionary Tale Of Anchoring Bias, Nicole Demarco, Julia Allyson Hays, Bonnie Sullivan, Michael Price, Kimberly A. Horii, Shannon Haines
No Suspicion For Nocarh: A Cautionary Tale Of Anchoring Bias, Nicole Demarco, Julia Allyson Hays, Bonnie Sullivan, Michael Price, Kimberly A. Horii, Shannon Haines
Posters
Introduction: Neonatal onset of cytopenia autoinflammation rash and hemophagocytic lymphohistiocytosis syndrome (NOCARH), a subset of hemophagocytic lymphohistiocytosis (HLH), is a rare and life-threatening condition characterized by uncontrolled immune response. It presents a diagnostic challenge in neonates due to the overlap of clinical features with other conditions, particularly congenital infections. We report a case of NOCARH in a late pre-term neonate, highlighting an atypical age group and the diagnostic difficulty of this syndrome. Case Presentation: A 1 day old ex-35 week er neonate presented to a level 4 NICU with chief complaints of pancytopenia,; an extensive petechialmaculopapular rash of on the …
Week 1: Can I Get A Witness?, Calvin University
Week 1: Can I Get A Witness?, Calvin University
Campus Ministries Resources
No abstract provided.
Lung Cancer Prevention Among Appalachian Kentucky Women, Jessica R. Thompson, Nancy E. Schoenberg, Pamela C. Hull
Lung Cancer Prevention Among Appalachian Kentucky Women, Jessica R. Thompson, Nancy E. Schoenberg, Pamela C. Hull
Anthropology Faculty Publications
Purpose: Appalachian Kentucky (KY) residents experience the highest lung cancer rates in the US with declines lagging among women; we sought to uncover barriers and facilitators to lung cancer prevention for Appalachian KY women and to identify community-specific interventions. Approach: We utilized concept mapping, a participatory mixed method, to generate consensus on perceived barriers and facilitators. Setting/Participants: We recruited 71 adult women from Appalachian KY counties. Method: After collecting online concept mapping data, we used multidimensional scaling to generate a point map of perceived similarities and hierarchical cluster analysis to create a thematic cluster map. We compared average cluster ratings …
Innocent Fun Or Unhealthy Habit: What's Your Game? Personality And Engagement With Video Games, Derrick Angier
Innocent Fun Or Unhealthy Habit: What's Your Game? Personality And Engagement With Video Games, Derrick Angier
Doctoral Dissertations
This thesis reports two exploratory studies of similar design, both of which investigated which gamers might be at risk for problematic or aggressive gaming. In both Study 1 (N = 480) and Study 2 (N = 761), which served as a replication, four composite scores representing participants’ personality attributes were created from big traits of the HEXACO—Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness, and Openness, a people-centered intelligence—personal intelligence—and motives for gaming. These composite scores and the subordinate individual variables were used to predict lifespace measures of unhealthy/healthy gaming behaviors and aggressive/pro-social in-game interactions. Lifespace scales capture a person’s reports of their …
Synthetic And Analytical Methods For Metal Targeting Peptides For The Sensing And Removal Of Metals Across Various Matrices, Emily Andrews
Synthetic And Analytical Methods For Metal Targeting Peptides For The Sensing And Removal Of Metals Across Various Matrices, Emily Andrews
Doctoral Dissertations
Metal chelators developed from peptides boast favorable attributes such as low toxicity, ease of synthesis, and high tunabilty to the target metal ion. It is for these reasons that peptides are used for metal sensing and sequestration in the body and environment. Herein, two unique sets of metal targeting peptides are discussed: (1) bifunctional Szeto-Schiller and Kelley peptide probes to signal the presence of and remove labile iron (Fe2+ and Fe3+) in the mitochondria, to mitigate the progression of Ferroptosis and (2) Pb2+ targeting peptides designed to exist in aqueous environments for the removal of toxic lead ions from waterways. …
Multiscale Modeling And Analysis Of Biomedically Relevant Uhmwpe-Based Composite Materials, Stanislav Buklovskyi
Multiscale Modeling And Analysis Of Biomedically Relevant Uhmwpe-Based Composite Materials, Stanislav Buklovskyi
Doctoral Dissertations
The development of ultra-high-molecular-weight-polyethylene (UHMWPE) based composite materials continues to present significant opportunities in biomedical engineering, particularly in joint arthroplasty and implant technologies. As applications expand, the need for accurate modeling of microstructure–property relationships to guide informed material design and manufacturing decisions is increasing. This dissertation presents a multiscale numerical modeling framework informed by X-ray micro-computed tomography (μCT) data to corelate the effective mechanical, thermal, and electrical properties of biomedically relevant composite systems with their microstructure.
Two material systems are considered: UHMWPE reinforced with conductive carbon black (CB) nanoparticles, and porous UHMWPE with two processes of pores generation. For CB/UHMWPE …
From Structure To Specificity: Biophysical Characterization Of Functional Interfaces In Protein Systems, Logan M. Brown
From Structure To Specificity: Biophysical Characterization Of Functional Interfaces In Protein Systems, Logan M. Brown
Doctoral Dissertations
Proteins are nature’s dynamic molecular machines, operating across a spectrum from highly ordered scaffolds to intrinsically disordered systems, and executing functions that depend on both precise structures and conformational flexibility. Yet, the mechanistic rules linking sequence, structure, and activity particularly in disordered proteins and specialized functional adaptations remain incompletely understood. This dissertation addresses that gap by integrating structural biology, biophysics, and protein engineering to dissect molecular recognition, stability, and function across three diverse yet thematically connected protein systems. Building on this understanding of protein structure and function, the following four projects apply these concepts to address diverse biological questions, ranging …
Evaluating The Effects Of Agricultural Management Practices On Beneficial Arthropod Communities, Isaac Newton Ativor
Evaluating The Effects Of Agricultural Management Practices On Beneficial Arthropod Communities, Isaac Newton Ativor
Doctoral Dissertations
Arthropods provide essential ecosystem services to our agricultural landscapes. These ecosystem services include biological control of pest organisms, including weed seeds, and plant pollination. Concerningly, however, there has been a global decline in insect populations over the last decade, a major cause of which is agricultural intensification. Previous research has demonstrated that agricultural management practices can strongly influence the species composition and abundance of arthropod communities, and therefore presumably the ecosystem services or disservices these organisms provide; however, our understanding of these interactions remains limited. I conducted three studies to investigate whether agricultural practices common in annual row crop (tillage …
Interpolated Factored Green's Function (Ifgf) Method Of Acceleration For Electromagnetic Scattering Off Of A Perfectly Electrically Conducting Surface, Mathew D'Amico
Doctoral Dissertations
Boundary integral equation (BIE) methods are advantageous in scattering problems due to their reduction of the problem's dimensionality as well as their automatic satisfaction of far-field radiation conditions. Specifically, for electromagnetic scattering off of perfectly electrically conducting (PEC) geometries, we are concerned with the magnetic field integral equation (MFIE). Typically, BIE implementation is iterative, with each direct integration requiring $\mathcal{O}(N^2)$ operations for a grid size $N$. For large $N$, this incurs very large computation times. To date, all existing methods that reduce the asymptotic operational complexity of evaluating the MFIE integral to $\mathcal{O}(N\log N)$ rely on use of the Fast …
Reentry, Justice Involvement, And Evolving Perspectives: Moving Toward Rehabilitation?, Casey Cavanaugh
Reentry, Justice Involvement, And Evolving Perspectives: Moving Toward Rehabilitation?, Casey Cavanaugh
Doctoral Dissertations
As prison populations climb, it is inevitable that the vast majority of incarcerated individuals will eventually return to the community. As they return, they face numerous barriers resulting from their incarceration. While it is important to identify barriers to reentry, it is also important to identify facilitators of reentry, which include forces that may mitigate reentry challenges. A tool is needed to measure this comprehensive list of barriers and facilitators, and in doing so, one may identify improvements and successes that stretch beyond merely that of recidivism. “Successful” reentry is typically measured through low recidivism rates, which recent government reports …
"She Wrote Too Much": Overproduction And The Canonicity Of Victorian Women Novelists, Elizabeth Drummey
"She Wrote Too Much": Overproduction And The Canonicity Of Victorian Women Novelists, Elizabeth Drummey
Doctoral Dissertations
Though the Victorian era is often viewed as “the age of female novelists,” many of the most prolific and popular women writers of the time have been belittled, ignored, and forgotten. While the feminist literary recovery work of the 1980s and 1990s has brought many of these women back into scholarly consciousness, they have still not gained the respect given to their more famous yet less prolific contemporaries: the Brontë sisters, George Eliot, and Elizabeth Gaskell. In this dissertation, I argue that the reason can be found in a criticism frequently applied to these women writers both in their own …
Investigations Into Prior Knowledge And Self-Efficacy As Predictors Of Exam Performance In General Chemistry, And Student Interactions With Chemistry Textbooks, Gordon Hunter
Doctoral Dissertations
The first chapter addresses the validity and reliability of the Motivated Strategies for Learning Questionnaire (MSLQ) as a tool for chemistry education research. The study shows that the original MSLQ did not meet modern standards of reliability and presents a modified version that better captures self-efficacy in chemistry-specific contexts. The revised instrument shows improved model fit, reinforcing the importance of refining assessment tools for chemistry education research.The effects of prior knowledge and self-efficacy on student performance in a first-semester general chemistry course are investigated in the second chapter. Self-efficacy, defined as a learner's belief in their capability to successfully accomplish …
Planning Responses To Drinking Water System Emergencies, Jingyan Huang
Planning Responses To Drinking Water System Emergencies, Jingyan Huang
Doctoral Dissertations
Despite extensive efforts to ensure clean and safe drinking water, drinking water contamination emergencies remain a persistent challenge in the United States. These events can result in widespread public health impacts, economic losses, and long-term environmental damage, particularly when triggered by hazardous chemical releases. Effective management of such crises requires a dual focus on both technical preparedness and human decision-making. This dissertation addresses these challenges through a two-part investigation that bridges pre-incident planning and post-incident response. It is guided by two core research objectives: (1) to evaluate commonly applied emergency countermeasures from both resilience and sustainability perspectives; and (2) to …
Psychological Factors Of Acting Talent And Success: You've Got "It", Lorelei Tierney Himlin
Psychological Factors Of Acting Talent And Success: You've Got "It", Lorelei Tierney Himlin
Doctoral Dissertations
The goal of an actor is to become invisible, bringing a character to life so convincingly that the audience forgets the actor exists outside the role. Different schools of acting often describe differing methods of portraying characters to this same general effect. To followers of the Meisner school, for example, “acting is behaving truthfully under imaginary circumstances” (Meisner et al., 1987). The “truthful” part involves creating a comprehensive mental model of a character’s imagined personality in order to fully embody that personality and extrapolate it to a situation. Then the actor uses a variety of acting techniques to think and …
Black Hole-Neutron Star Mergers: Numerical Relativity Studies Of Remnant Matter, Gravitational Waveforms, And Automated Simulation Workflows, Tia Kathleen Martineau
Black Hole-Neutron Star Mergers: Numerical Relativity Studies Of Remnant Matter, Gravitational Waveforms, And Automated Simulation Workflows, Tia Kathleen Martineau
Doctoral Dissertations
Black hole–neutron star (BHNS) mergers are key sources for multimessenger astrophysics, offering insight into strong-field gravity and the behavior of matter at supranuclear densities. This dissertation presents three independent contributions to the study of BHNS systems using the Spectral Einstein Code (SpEC). First, a set of simulations spanning a range of mass ratios, black hole spins, and neutron star equations of state is used to map disruption thresholds and quantify remnant disk masses, unbound ejecta, and ejecta composition. These results are compared to predictions from remnant mass model FNH18, to assess its reliability in accurately predicting the resulting remnant masses …
Multi-Level Characterization And Testing Of Fatigue, Fracture And Creep Of The Ultra-High Strength Low-Alloy Steel Fabricated Via Laser Powder Bed Fusion, Nemanja Kljestan
Multi-Level Characterization And Testing Of Fatigue, Fracture And Creep Of The Ultra-High Strength Low-Alloy Steel Fabricated Via Laser Powder Bed Fusion, Nemanja Kljestan
Doctoral Dissertations
This dissertation presents a comprehensive experimental investigation of the mechanical behavior of an high-strength low-alloy (HSLA) steel fabricated via laser powder bed fusion (LPBF). The work focuses on fatigue strength, laser shock peening (LSP) effects, creep behavior, fatigue crack growth and fracture toughness. Fatigue strength was assessed using rotating bending tests, showing superior performance of LPBF specimens compared to as-cast materials due to the dual-variant martensitic microstructures. Laser shock peening enhanced fatigue life by inducing compressive residual stresses, delaying crack initiation and slowing crack propagation. Creep behavior was evaluated for different layer thicknesses, with thinner layers improving secondary creep resistance …
Simulations Of Perpendicular Electron Holes, James Patrick Mcclung
Simulations Of Perpendicular Electron Holes, James Patrick Mcclung
Doctoral Dissertations
Bernstein–Greene–Kruskal modes commonly manifest as electron holes and electrostatic solitary waves in space plasmas. These Debye-scale structures are nonlinear solutions to the steady-state Vlasov–Poisson system. Solutions in one dimension are highly tractable mathematically, observationally, and computationally, and are relatively well-understood. Higher-dimensional, magnetized plasmas are less amenable to study, however. Following a 20-year history of theoretical developments in two-dimensional BGK modes, this thesis presents the first high-resolution 2D and 3D simulations thereof. Stability conditions and phase-space dynamics are discovered and discussed. The simulated modes are ultimately compared to observed electron holes and modern width-amplitude relations. In addition, a significant portion of …
Missing Child Incidents Resulting In Death: Distinguishing Features Between False Allegations, Wander-Offs, And True Child Abductions, Madison N. Sundberg-Alley
Missing Child Incidents Resulting In Death: Distinguishing Features Between False Allegations, Wander-Offs, And True Child Abductions, Madison N. Sundberg-Alley
Doctoral Dissertations
Children are reported missing in the United States for a multitude of reasons every year. Often, law enforcement is tasked with investigating these disappearances and recovering the missing child. In some instances, determining the reason why a child is missing can be challenging. This study focuses on three types of missing child episodes that result in fatality: child abduction homicides (CAH), false allegations of child disappearance (FACD), and wander-offs (WO). This exploratory analysis contributes to a gap in the literature by identifying some possible differences between case types that may assist police in determining the likely explanation for the disappearance. …
Analyzing Regions For The Study Of Localized Fluctuations In The Ground Magnetic Field For The Development Of A Global Risk-Assessment Forecast, Michael Kavanagh Coughlan
Analyzing Regions For The Study Of Localized Fluctuations In The Ground Magnetic Field For The Development Of A Global Risk-Assessment Forecast, Michael Kavanagh Coughlan
Doctoral Dissertations
The dynamic relationship between the solar wind and the Earth's magnetic field can produce rapid changes in the geomagnetic field measured on the ground ($dB_H/dt$). The fluctuations can be highly localized, with differences of up to 100s of nT/min in a small geographic area. The field of space weather is entering a more data-driven era, with enormous amounts of publicly available datasets from satellites and ground measurements. In this work modern machine learning techniques were employed to make forecasting risk-assessment predictions of large and localized $dB_H/dt$, and model explainability methods were employed to understand the non-linear connections being made. These …
Computational String Theory Using Machine Learning, Giorgi Butbaia
Computational String Theory Using Machine Learning, Giorgi Butbaia
Doctoral Dissertations
Low-energy couplings of certain superstring theories are related to the masses of the particles. One of the most promising superstring theories is $\mathcal{N}=1$ supersymmetric $E_8\times E_8$ heterotic string theory. In a certain embedding of the standard model into $E_8\times E_8$ gauge group of the heterotic string, the particle spectrum consists of $(\mathbf{27})^3$, $(\overline{\mathbf{27}})^3$, $(\mathbf{1})^3$ and $\mathbf{1}\cdot \mathbf{27}\cdot\overline{\mathbf{27}}$ couplings. While the $(\overline{\mathbf{27}})^3$ couplings are quasi-topological, the $(\mathbf{27})^3$ explicitly depend on the Ricci-flat metric on Calabi-Yau.
In this dissertation, we explore recently developed techniques for calculating the normalized Yukawa couplings on various Calabi-Yau manifolds. In Chapter 2, we describe a novel architecture, …
Counting Kelp: Development And Assessment Of Modelling Approaches To Improve Understanding Of Kelp Bed Abundance And Resilience In The Gulf Of Maine, Constance N. Tyler
Counting Kelp: Development And Assessment Of Modelling Approaches To Improve Understanding Of Kelp Bed Abundance And Resilience In The Gulf Of Maine, Constance N. Tyler
Doctoral Dissertations
Kelp habitats in the Gulf of Maine are threatened by rising ocean temperatures and marine invasions. The replacement of kelps with red turf macroalgae fundamentally alters these habitats and disrupts the ecosystem services they provide. Thorough assessment and monitoring of kelp habitats is needed for proper conservation of these habitats, but most long-term monitoring is performed using traditional survey methods that are restricted in the amount of space they can cover. Habitat modelling approaches are required to expand our knowledge of Gulf of Maine kelp habitats, and to better understand the interactions between kelp and red turf habitats across the …
Verifying Interchange Reconnection Models For Magnetic Switchbacks Using The Parker Solar Probe And Mms, Emily Owen Mcdougall
Verifying Interchange Reconnection Models For Magnetic Switchbacks Using The Parker Solar Probe And Mms, Emily Owen Mcdougall
Doctoral Dissertations
Ever since their initial observation by the Ulysses probe, many models of magnetic switchbacks were put forth, but relatively little empirical evidence exists to verify these models, especially in terms of the ions that make up the accompanying plasma. I take energetic particle data from the Parker Solar Probe within switchbacks to provide experimental evidence to bolster the interchange reconnection driven models with particular interest in the interchange reconnection driven linear model. Statistical Analysis of switchbacks in the vicinity of CMEs, solar flares, and high-speed streams show properties consistent with the linear interchange reconnection model, and an analysis of switchbacks …
The Assessment Of Language, The Language Of Assessment: Understanding How Language Teachers Support Dynamic, Communicative Language Learning Through Assessment, Rebecca Kelley
Doctoral Dissertations
As language classrooms in K-12 schools in the United States seek to promote students’ proficiency in the language they teach and to prepare students for a multilingual world, the role of assessment in these classrooms is often overlooked. This study draws from theories of formative and dynamic assessment, as well as a socially-constructed view of language and language learning, in order to examine the way in which secondary language teachers plan for, elicit, interpret, and use evidence from classroom assessments in such a way that promotes and supports the language learning happening in the classroom. Through a series of three …
Bio-Acoustical Statistical Signal Processing For Detection, Classification, And Population Estimation In Wildlife Monitoring, Yue Liang
Doctoral Dissertations
Sound is a primary way for many animal species to communicate, forage, navigate, and assess their environment. As a result, passive acoustic monitoring (PAM), the recording and analysis of animal vocalizations, has become a valuable, non-invasive alternative to visual surveys. However, the massive volume of acoustic data generated annually, often reaching hundreds of terabytes, presents a significant challenge for efficient analysis. Since manual inspection of every frame in such data is infeasible, it is essential to develop automated detection and classification tools.
This thesis investigates and develops several statistical signal processing and machine learning techniques to address this challenge. The …
Fine Structure Of Magnetic Reconnection: Impact On Reconnection And Dissipation Rates, Steven Ver Bryck Heuer
Fine Structure Of Magnetic Reconnection: Impact On Reconnection And Dissipation Rates, Steven Ver Bryck Heuer
Doctoral Dissertations
Magnetic reconnection is a fundamental process in magnetized plasmas where stored magnetic energy is converted to heat and kinetic energy. The objective of this thesis is to examine the role of small-scale structure of the reconnection region and the background plasma conditions on the rate that reconnection converts and dissipates magnetic energy. This is done using in situ data from NASA’s Magnetospheric Multiscale (MMS) mission and particle-in-cell (PIC) simulations of reconnection for different regimes. First, we introduce a new technique for measuring the reconnection rate and demonstrate its accuracy for the simplest regime of reconnection. Next, we show that it …