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Christian School Leaders’ Perspectives On Identifying And Hiring High-Quality Teachers, Alison Johnson, Rian R. Djita, Lynn E. Swaner Aug 2024

Christian School Leaders’ Perspectives On Identifying And Hiring High-Quality Teachers, Alison Johnson, Rian R. Djita, Lynn E. Swaner

Education Reform Faculty and Graduate Students Publications

Teacher quality is one of the most important factors influencing a student’s educational outcomes, yet scant research has examined teacher hiring and quality in Protestant Christian schools. In this qualitative work, we thematically analyze interviews about Christian schools’ teacher hiring practices with a group of 12 leaders from 10 member schools in the Association of Christian Schools International. We find that these 10 schools generally follow a standard hiring process. The qualifications they seek in teachers could be arranged into a pyramid, where the base—the most fundamental quality—is demonstration of authentic belief in Protestant Christian doctrines. After faith, school leaders …


Pragmatism And Feasibility: A Qualitative Study Of Experiences Implementing And Upgrading Care In Geriatric Emergency Departments, Lauren Southerland, Aanand Naik, Kyler Godwin, Maura Kennedy Aug 2024

Pragmatism And Feasibility: A Qualitative Study Of Experiences Implementing And Upgrading Care In Geriatric Emergency Departments, Lauren Southerland, Aanand Naik, Kyler Godwin, Maura Kennedy

Faculty, Staff and Students Publications

OBJECTIVES: Implementation and sustainability of new care processes in emergency departments (EDs) is difficult. We describe experiences of implementing geriatric care processes in EDs that upgraded their accreditation level for the Geriatric Emergency Department Accreditation (GEDA) program. These EDs can provide a model for adopting and sustaining guidelines for evidence-based geriatric care.

METHODS: We performed qualitative interviews with geriatric ED nurse and physician leaders overseeing their ED's geriatric accreditation processes. The interview guide was based on the Consolidated Framework for Implementation Research (CFIR), a framework consisting of a comprehensive set of factors that impact implementation of evidence-based interventions. We used …


Influence Of Stimulation Frequency On Brain-Derived Neurotrophic Factor And Cathepsin-B Production In Healthy Young Adults, Yuichi Nishikawa, Hiroyuki Sakaguchi, Tatsuya Takada, Noriaki Maeda, Allison S. Hyngstrom Aug 2024

Influence Of Stimulation Frequency On Brain-Derived Neurotrophic Factor And Cathepsin-B Production In Healthy Young Adults, Yuichi Nishikawa, Hiroyuki Sakaguchi, Tatsuya Takada, Noriaki Maeda, Allison S. Hyngstrom

Physical Therapy Faculty Research and Publications

Electrical muscle stimulation (EMS) has been shown to stimulate the production of myokines (i.e., brain-derived neurotrophic factor (BDNF)), but the most effective EMS parameters for myokine production have not been fully elucidated. The purpose of this study was to quantify the optimal EMS frequency for stimulating myokine production. This study included sixteen young adults (male, n = 13, age = 27.3 ± 5.5 years). Participants underwent four EMS interventions (20 min each) with the following conditions: (1) 4 Hz, (2) 20 Hz, (3) 80 Hz, and (4) control (no intervention). Blood samples were obtained before and immediately after EMS. For …


The Effects Of A Period Of Match Congestion On Countermovement Jump Height And Match Performance Variables In Ncaa Division I Female Soccer Players, Fiona Dodge Aug 2024

The Effects Of A Period Of Match Congestion On Countermovement Jump Height And Match Performance Variables In Ncaa Division I Female Soccer Players, Fiona Dodge

Electronic Theses and Dissertations

Effects of a congested match period on countermovement jump height (CMJ) and match performance variables were examined over the course of a D-I female soccer season. Twenty-one female collegiate soccer players (20.3 ± 1.8 yrs, body mass (kg): 62.3 ± 7.3, height (cm): 168.9 ± 6.1, body fat (%): 23.0 ± 3.7. performed CMJ testing prior to regular season matches. Global Positioning System (GPS) was used to assess physical match performance, while pre- and post-season lab and field-based testing was also performed. Analysis of variance trend analyses (ANOVA) were conducted using a linear mixed-effects model (LMM) to examine trends in …


Dengue And Climate Change: Assessing Potential Future Areas Of Concern For Transmission In The United States, Matthew Beer Aug 2024

Dengue And Climate Change: Assessing Potential Future Areas Of Concern For Transmission In The United States, Matthew Beer

Electronic Theses and Dissertations

Background: Global climate change severely impacts human life, particularly health, as rising temperatures and extreme weather affect physical and mental well-being. Climate change can also alter the risk factors and epidemiology of infectious diseases, notably vector-borne diseases (VBDs), including those transmitted by mosquitoes. The Aedes mosquito, responsible for dengue, poses a significant threat due to its prevalence vector. Dengue prevention lacks effective methods beyond vector control, and the current vaccine has limitations, emphasizing the need for intensified research and prevention strategies to mitigate the expanding dengue burden worldwide. The goal of these studies was to establish a novel risk index …


Enriching The Pcos Lifestyle, Callie Coleman Aug 2024

Enriching The Pcos Lifestyle, Callie Coleman

Electronic Theses and Dissertations

Polycystic Ovary Syndrome (PCOS) is an endocrine disorder affecting approximately 4 – 20% of women worldwide. It is associated with insulin resistance, fertility problems, and an increased susceptibility to chronic conditions through multiple inflammatory pathways. Women with PCOS are also at increased risk for disordered eating. The Mediterranean diet is associated with decreased inflammation and risk of chronic conditions, and intuitive eating principles are associated with decreased disordered eating patterns. The purpose of this study was to determine if a six-week nutrition education workshop incorporating information and skills related to both the Mediterranean lifestyle and intuitive eating principles can improve …


Disparities Surrounding The Availability Of Feminine Hygiene Products In The Workplace, Marlene Ventura Aug 2024

Disparities Surrounding The Availability Of Feminine Hygiene Products In The Workplace, Marlene Ventura

Electronic Theses, Projects, and Dissertations

Menstrual inequality in the workplace continues to exist, affecting financial welfare, mental health, physical health, and access to care. Women have been enduring disparities related to menstruation, including stigma, shame, and period poverty, which are often exacerbated in the workplace. This study aims to explore the experiences of women who do not have access to free feminine hygiene products in the workplace.

The researcher conducted one-to-one interviews in person with employed women (n=9). The questions were semi-structured and based on a survey with nineteen questions addressing areas of menstrual inequality in the workplace. Seven themes were identified: 1) work performance, …


Ai-Driven Cybersecurity Threats And Organizational Consequences, Apeksha Kale Aug 2024

Ai-Driven Cybersecurity Threats And Organizational Consequences, Apeksha Kale

Electronic Theses, Projects, and Dissertations

ABSTRACT

This project used a case study research strategy to investigate the impact of AI-driven cybersecurity threats on organizations. The research questions are: Q1: How can different types of organizations improve their defenses against AI-driven cybersecurity attacks? Q2: How will future hackers most likely access AI tools, and what AI tools will they use? Q3: What strategies can organizations implement to enhance resilience against phishing emails? Three Case Studies were selected and analyzed to answer the three research questions. The findings are Q1: AI-driven cyberattacks pose significant risks, but organizations can improve defenses by investing in AI technologies like Vectra …


Corn Leaf Disease Prediction Using Deep Learning, Meghana Varayuri Aug 2024

Corn Leaf Disease Prediction Using Deep Learning, Meghana Varayuri

Electronic Theses, Projects, and Dissertations

Corn is a widely cultivated agricultural product, serving as a cornerstone in food production and industrial applications such as biofuels, playing a crucial role in the global economy. This study explores the application of deep transfer learning to accurately classify major corn diseases from leaf images, aiming to enhance disease management strategies for improved agricultural productivity and sustainability. The customized Dense net 201 model achieved 95% prediction accuracy on an untrained dataset. Data augmentation improved the model’s accuracy from 91% to 95%. This supervised learning approach enhances the model’s performance by increasing the diversity, leading to better generalization and accuracy. …


Exploring The Integration Of Blockchain In Iot Use Cases: Challenges And Opportunities, Ivannah George Aug 2024

Exploring The Integration Of Blockchain In Iot Use Cases: Challenges And Opportunities, Ivannah George

Electronic Theses, Projects, and Dissertations

Blockchain and The Internet of Things (IoT) is a significant paradigm which has gained traction in today’s digital age as two complimentary technologies. The combination of IoT's connectivity with blockchain's security creates new opportunities and solves problems associated with centralized systems. This culminating project aims to delve deeper into the integration of blockchain technology in IoT applications based on select use cases to uncover potential benefits and significant challenges of blockchain integration across different sectors. The research objectives to be addressed are: (RO1) How emerging vulnerabilities manifest in the implementation of blockchain within current IoT ecosystems. (RO2) How current opportunities …


Emotional Eating In Adolescents With Obesity: Case Series, Paula Dayan Aug 2024

Emotional Eating In Adolescents With Obesity: Case Series, Paula Dayan

Electronic Theses, Projects, and Dissertations

Childhood obesity remains a significant public health concern, with substantial implications for physical and mental well-being. This thesis aims to explore the intricate relationship between emotional eating and obesity among adolescents, with a focus on identifying emotional triggers and assessing their psychological impact. Utilizing a cross-sectional study design at a university in southern California, data were collected from two adolescents aged 13-18 years. Through surveys and body composition measurements, participants' emotional barriers to weight loss and readiness for change were assessed. The findings underscore the presence of varying degrees of emotional hurdles among adolescents with obesity, including depression, frustration, and …


Classification Model For Discovering The Type Of Crop To Plant Using Ensemble Techniques, Uma Mahesh Addanki Aug 2024

Classification Model For Discovering The Type Of Crop To Plant Using Ensemble Techniques, Uma Mahesh Addanki

Electronic Theses, Projects, and Dissertations

Farming plays a role in ensuring survival, especially with the growing need for increased agricultural output. It is vital for farmers to efficiently choose the crops to cultivate. By using crop recommendation systems farmers can make decisions on what crops to plant leading to yields and improved resource management. The success of crop production depends on maintaining the balance of soil nutrients and favorable weather conditions. In this research project, we created a crop recommendation system utilizing learning methods to predict the appropriate crops based on essential soil nutrients and weather patterns. We worked with a dataset sourced from Kaggle, …


Crime Data Prediction Based On Geographical Location Using Machine Learning, Sai Bharath Yarlagadda Aug 2024

Crime Data Prediction Based On Geographical Location Using Machine Learning, Sai Bharath Yarlagadda

Electronic Theses, Projects, and Dissertations

This project employs machine learning methods like K Nearest Neighbors (KNN), Random Forest, Logistic Regression, and Decision Tree algorithms to monitor crime data based on location and pinpoint areas with risks. The project implements and tunes the four models to improve the precision of predicting crime levels. These models collaborate to offer a trustworthy evaluation of crime patterns. K Nearest Neighbors (KNN) categorizes locations by examining the proximity of data points considering coordinates and other factors to identify trends linked to increased crime data. Logistic Regression gauges the likelihood of crime incidents by studying the connection, between factors (like location …


Food Waste Study At A School District In California, Monica Ibarra Aug 2024

Food Waste Study At A School District In California, Monica Ibarra

Electronic Theses, Projects, and Dissertations

This study is aimed at evaluating food leftovers and wastes among elementary school students by comparing their food preferences for different ethnic cuisines, developing strategies to reduce food waste, and an assessment of quality assurance of food served. Data were collected from a cafeteria at an elementary school located in California. The total number of students served each day at this elementary school was 475. Data were provided by the cafeteria staff after the lunch was served. It was observed that students preferred Chinese food (specifically, Orange Chicken) over Mexican (Beef Chalupas) and American (Turkey with Gravy) where100% of the …


Service Connect, Namrata Bomble Aug 2024

Service Connect, Namrata Bomble

Electronic Theses, Projects, and Dissertations

ServiceConnect is an innovative web-based marketplace platform designed to revolutionize how local services are accessed and managed in the US. By connecting service providers and customers directly, ServiceConnect provides a simple, secure, user-friendly platform for a range of services such as home repairs, tutoring, pet care and more. Featuring convenient booking tools that increase efficiency while simultaneously building trust among both parties involved. ServiceConnect stands out with its comprehensive service range, user-friendly interface, secure payment processing and rigorous verification process for service providers. Leveraging advanced technologies like ReactJS on the frontend, Node.js & Express on the backend and MongoDB for …


Development Of A Cookbook To Increase Calcium Intake In Black Women, Janai Yvonne-Aubrey Johnson Aug 2024

Development Of A Cookbook To Increase Calcium Intake In Black Women, Janai Yvonne-Aubrey Johnson

Electronic Theses, Projects, and Dissertations

Background:

Black women face considerable challenges in maintaining adequate calcium intake due to limited access to nutrition education and calcium-rich foods. This issue is compounded by the global prevalence of lactose intolerance, affecting 75% of the population (Isoa & Sarkar, 2022). Given the significance of calcium for overall health, it is imperative to ascertain the optimal daily intake for adults and assess the shortfall in consumption compared to recommended guidelines. Additionally, it underscores the importance of investigating current calcium consumption levels among diverse populations to identify deficiencies and potential health implications. By addressing these gaps in knowledge, policymakers, healthcare professionals, …


Accumulation Of Alkyl-Lysophosphatidylcholines In Niemann-Pick Disease Type C1, Sonali Mishra, Pamela Kell, David Scherrer, Dennis J Dietzen, Charles H Vite, Elizabeth Berry-Kravis, Cristin Davidson, Stephanie M Cologna, Forbes D Porter, Daniel S Ory, Xuntian Jiang Aug 2024

Accumulation Of Alkyl-Lysophosphatidylcholines In Niemann-Pick Disease Type C1, Sonali Mishra, Pamela Kell, David Scherrer, Dennis J Dietzen, Charles H Vite, Elizabeth Berry-Kravis, Cristin Davidson, Stephanie M Cologna, Forbes D Porter, Daniel S Ory, Xuntian Jiang

2020-Current year OA Pubs

Lysosomal function is impaired in Niemann-Pick disease type C1 (NPC1), a rare and inherited neurodegenerative disorder, resulting in late endosomal/lysosomal accumulation of unesterified cholesterol. The precise pathogenic mechanism of NPC1 remains incompletely understood. In this study, we employed metabolomics to uncover secondary accumulated substances in NPC1. Our findings unveiled a substantial elevation in the levels of three alkyl-lysophosphatidylcholine [alkyl-LPC, also known as lyso-platelet activating factor (PAF)] species in NPC1 compared to controls across various tissues, including brain tissue from individuals with NPC1, liver, spleen, cerebrum, cerebellum, and brain stem from NPC1 mice, as well as in both brain and liver …


Association Between Interpregnancy Interval And The Labor Curve, Julia Burd, Candice Woolfolk, Antonina Frolova, Amanda Zofkie, Anthony Odibo, Ebony B Carter, Jeannie C Kelly, Alison G Cahill, Nandini Raghuraman Aug 2024

Association Between Interpregnancy Interval And The Labor Curve, Julia Burd, Candice Woolfolk, Antonina Frolova, Amanda Zofkie, Anthony Odibo, Ebony B Carter, Jeannie C Kelly, Alison G Cahill, Nandini Raghuraman

2020-Current year OA Pubs

BACKGROUND: Both short and long interpregnancy intervals are associated with adverse pregnancy outcomes; however, the impact of interpregnancy intervals on labor progression is unknown.

OBJECTIVE: We examined the impact of interpregnancy intervals on the labor curve, hypothesizing that those with a longer interpregnancy intervals would have slower labor progression.

STUDY DESIGN: This is a retrospective cohort study of patients with a history of one prior vaginal delivery admitted for induction of labor or spontaneous labor with a singleton gestation ≥37 weeks at an academic medical center between 2004 and 2015. Repeated measures regression was used to construct labor curves, which …


Genetic Variance Present In Toll-Like Receptor 2 Of Gopherus Polyphemus, Hannah Varghese Aug 2024

Genetic Variance Present In Toll-Like Receptor 2 Of Gopherus Polyphemus, Hannah Varghese

Harriet L Wilkes Honors College Theses 2020 - Present

Gopher tortoises (Gopherus polyphemus), a keystone species of the Abacoa Greenway Preserve, face many health risks, like Upper Respiratory Tract Disease (URTD), caused by Mycoplasma agassizii infection. While URTD’s effects differ among tortoise populations, Abacoa’s tortoises display lower fatality rates with unclear causes. This study explores genetic variance in Toll-like Receptor 2 (TLR2) as a possible contributor to lower fatality rates from URTD infection. TLR2 initiates the immune response to Gram-positive bacteria in other tortoise species but is not currently sequenced in Gopherus polyphemus. Genetic sequencing targeted TLR2 through blood genomic DNA extraction, PCR fragment amplification with newly designed primers, …


Co-Rumination, Psychological Inflexibility, And Internalizing Symptoms In Adolescence, John Parigger Aug 2024

Co-Rumination, Psychological Inflexibility, And Internalizing Symptoms In Adolescence, John Parigger

Electronic Theses and Dissertations

Two risk factors for anxiety and depression in adolescence were examined: co-rumination, which occurs when friends excessively talk about problems; and psychological inflexibility, which occurs when one avoids negative feelings and fails to act on values. I hypothesized that psychological inflexibility would exacerbate the effect of co-rumination on adolescent anxiety and depression. Participants were 167 adolescents (Mage = 14.60 years, SD = 1.3; 65.7% cisgender males) who completed standard measures as part of an online survey. Results indicated no moderation effect, but there were main effects of co-rumination and psychological inflexibility on depression symptoms. Co-rumination may relate to …


Transatlantic Memory And Identity: The Legacy Of Colonel Heg And The 15th Wisconsin In Norway And Norwegian America, Remi Berg Aug 2024

Transatlantic Memory And Identity: The Legacy Of Colonel Heg And The 15th Wisconsin In Norway And Norwegian America, Remi Berg

Electronic Theses and Dissertations

While memory studies of the American Civil War flourishes, ethnic and immigrant perspectives remain obscured. This project attempts to uncover how Norwegian-Americans remembered the 6000 Norwegian immigrants who fought in the Union Army. It explores the processes behind commemoration of Colonel Hans Christian Heg and the 15th Wisconsin Infantry Regiment from 1914 to 1928. It reveals that Norwegian-Americans commemorated Colonel Heg on three different and connected levels. Nationally, Norwegian-Americans raised a statue of Heg in Wisconsin after the individual determination of Waldemar Ager to challenge nativism and Americanization. Transnationally, Ager cooperated with the organization Nordmands-Forbundet who facilitated the erection of …


Exploring Early Childhood Teachers’ Experiences In Teaching Multilingual Children In Public Mainstream Schools In Tennessee, Maria Dias Aug 2024

Exploring Early Childhood Teachers’ Experiences In Teaching Multilingual Children In Public Mainstream Schools In Tennessee, Maria Dias

Electronic Theses and Dissertations

This qualitative study, grounded in a phenomenological perspective, delves into the lived experiences of early childhood teachers who teach multilingual children in mainstream classrooms in Tennessee. Amidst the rising number of multilingual learners in mainstream educational settings and the dearth of adequate teacher training to address their needs, this research illuminates the experiences of these teachers. Furthermore, it seeks to advocate for the integration of translanguaging pedagogy into teacher training programs and state policies. This study employed a qualitative study using the three-in-depth-interview series from a phenomenological perspective (Seidman, 2019). The first interview focused on participants’ overall teaching experiences and …


Human Platelet Lysate Enhances In Vivo Activity Of Car-Vδ2 T Cells By Reducing Cellular Senescence And Apoptosis, Chonghui Cheng, Helen E Heslop, Malcolm K Brenner, Maksim Mamonkin, Norihiro Watanabe Aug 2024

Human Platelet Lysate Enhances In Vivo Activity Of Car-Vδ2 T Cells By Reducing Cellular Senescence And Apoptosis, Chonghui Cheng, Helen E Heslop, Malcolm K Brenner, Maksim Mamonkin, Norihiro Watanabe

Faculty, Staff and Students Publications

BACKGROUND AIMS: Vγ9Vδ2 T cells are an attractive cell platform for the off-the-shelf cancer immunotherapy as the result of their lack of alloreactivity and inherent multi-pronged cytotoxicity, which could be further amplified with chimeric antigen receptors (CARs). In this study, we sought to enhance the in vivo longevity of CAR-Vδ2 T cells by modulating ex vivo manufacturing conditions and selecting an optimal CAR costimulatory domain.

METHODS: Specifically, we compared the anti-tumor activity of Vδ2 T cells expressing anti-CD19 CARs with costimulatory endodomains derived from CD28, 4-1BB or CD27 and generated in either standard fetal bovine serum (FBS)- or human platelet …


The Duty To Diversify And The Logic Of Indexing, Richard A. Booth Aug 2024

The Duty To Diversify And The Logic Of Indexing, Richard A. Booth

Faculty Publications

Index funds, such as those that track the S&P 500, are popular with investors because they offer maximum diversification—and thus minimum risk—with management fees that are far lower than those charged by traditional, actively managed stock-picking mutual funds. As a result, investors have flocked to such funds, which have grown dramatically in size. But many observers find this trend alarming because they see index funds as a threat to both corporate governance and competition.

Most critics have focused on the passivity of index funds, which they see as a failure of fund managers to do their duty as stockholders to …


Microbiome Assembly And Function In The Solitary Mason Bee, Osmia Lignaria (Megachilidae), Bailey Crowley Aug 2024

Microbiome Assembly And Function In The Solitary Mason Bee, Osmia Lignaria (Megachilidae), Bailey Crowley

All Graduate Theses and Dissertations, Fall 2023 to Present

Animal-microbe interactions can influence host biology, ecology, and evolution. The assembly and function of microbes found within animal hosts oftentimes depends on which species are involved. Advances in sequencing technologies have permitted the exploration of host-microbe interactions in a variety of animals, including bees. Early research aimed at understanding the microbiomes of social bees, such as honey bees and bumble bees, found that microbes prevent the spoilage of stored pollen, breakdown indigestible nutrients into smaller molecules available for uptake by the host, and also protect the host from pathogens. When environmental stressors, such as increased temperatures, disrupt the microbiome, the …


Evidence For Partitioning? A Comparison Of Thermal Niche In Three Species Of Sympatric Lizards In Northeastern Utah, Kristopher B. Pedersen Aug 2024

Evidence For Partitioning? A Comparison Of Thermal Niche In Three Species Of Sympatric Lizards In Northeastern Utah, Kristopher B. Pedersen

All Graduate Theses and Dissertations, Fall 2023 to Present

Lizards actively maintain a narrow range of body temperatures through behavioral thermoregulation and microhabitat selection. Body temperature plays a critical role in many physiological processes. As a result, there is a range of body temperatures at which a lizard’s reproductive success (fitness) is maximized, known as the lizard’s thermal niche. There is strong evidence linking the available temperatures, or thermal properties of a microhabitat, to success in maintaining body temperatures within a preferred set range. Microhabitats have differing thermal properties, and so have different relative quality. Because thermal properties are limited in space and time, competition for high quality microhabitat …


Covering The Care: Most Prevalent Health Conditions And Their Associated Costs Among Nh’S Insured Population – Behavioral Health And Cardiovascular Disease Top The List, Bethany Swanson, Erica Plante, Deborah Fournier Aug 2024

Covering The Care: Most Prevalent Health Conditions And Their Associated Costs Among Nh’S Insured Population – Behavioral Health And Cardiovascular Disease Top The List, Bethany Swanson, Erica Plante, Deborah Fournier

Faculty Publications

This data brief presents an analysis of available claims data from New Hampshire’s commercial, Medicaid, and Medicare insured populations. Specifically, the study identifies the top ten most prevalent health conditions, the cost of treatment for those conditions, and the overall medical cost for those with one of the identified conditions. The analysis is based on the most recent calendar year of available claims data (January – December 2022).


Response Of The First Polar-2 Prototype To Polarized Beams, Merlin Kole, Nicolas De Angelis, Ana Bacelj, Franck Cadoux, Agnieszka Elwertowska, Johannes Hulsman, Hancheng Li, Grzegorz Łubian, Tomasz Kowalski, Gilles Koziol, Agnieszka Pollo, Nicolas Produit, Dominik Rybka, Adrien Stil, Jianchao Sun, Xin Wu, Kacper Zezuliński, Shuang-Nan Zhang Aug 2024

Response Of The First Polar-2 Prototype To Polarized Beams, Merlin Kole, Nicolas De Angelis, Ana Bacelj, Franck Cadoux, Agnieszka Elwertowska, Johannes Hulsman, Hancheng Li, Grzegorz Łubian, Tomasz Kowalski, Gilles Koziol, Agnieszka Pollo, Nicolas Produit, Dominik Rybka, Adrien Stil, Jianchao Sun, Xin Wu, Kacper Zezuliński, Shuang-Nan Zhang

Faculty Publications

POLAR-2 is a dedicated gamma-ray polarimeter currently foreseen to be launched towards the China Space Station around 2027. The design of the detector is based on the legacy of its predecessor mission POLAR which was launched in 2016. POLAR-2 aims to measure the polarization of the Gamma-ray Burst prompt emission within the 30–800 keV energy range. Thanks to its high sensitivity to gamma-ray polarization, as well as its large effective area, POLAR-2 will provide the most precise measurements of this type to date. Such measurements are key to improve our understanding of the astrophysical processes responsible for Gamma-Ray Bursts. The …


On The Effect Of Driving Turbulent-Like Fluctuations On A Harris Current Sheet Configuration And The Formation Of Plasmoids, Jeffersson A. Agudelo Rueda, Yi-Hsin Liu, Kai Germaschewski, Michael Hesse, Naoki Bessho Aug 2024

On The Effect Of Driving Turbulent-Like Fluctuations On A Harris Current Sheet Configuration And The Formation Of Plasmoids, Jeffersson A. Agudelo Rueda, Yi-Hsin Liu, Kai Germaschewski, Michael Hesse, Naoki Bessho

Faculty Publications

Energy dissipation in collisionless plasmas is one of the most outstanding open questions in plasma physics. Magnetic reconnection and turbulence are two phenomena that can produce the conditions for energy dissipation. These two phenomena are closely related to each other in a wide range of plasmas. Turbulent fluctuations can emerge in critical regions of reconnection events, and magnetic reconnection can occur as a product of the turbulent cascade. In this study, we perform 2D particle-in-cell simulations of a reconnecting Harris current sheet in the presence of turbulent fluctuations to explore the effect of turbulence on the reconnection process in collisionless …


The Plasma Pressure Contribution From Low-Energy (0.05–2 Kev) Energetic Neutral Atoms In The Heliosheath, André Galli, Peter Wurz, Nathan A. Schwadron, Eberhard Möbius, Stephen A. Fuselier, Justyna M. Sokół, Paweł Swaczyna, Maciej Bzowski, David J. Mccomas Aug 2024

The Plasma Pressure Contribution From Low-Energy (0.05–2 Kev) Energetic Neutral Atoms In The Heliosheath, André Galli, Peter Wurz, Nathan A. Schwadron, Eberhard Möbius, Stephen A. Fuselier, Justyna M. Sokół, Paweł Swaczyna, Maciej Bzowski, David J. Mccomas

Faculty Publications

Energetic neutral atoms (ENAs) from the heliosphere are a unique means to remotely image the boundary regions of our heliosphere. The Interstellar Boundary Explorer (IBEX) has been very successful in measuring these ENAs since 2008 at energies from tens of eV to 6 keV. The main question raised by one solar cycle of IBEX-Lo observations at 0.05–2 keV is the strong and ubiquitous underestimation of several model predictions compared with actually measured ENA intensities at energies between 100 and 500 eV. This study converts the observed ENA intensities into plasma pressures for different sky directions and considers the implications for …