Physical Sciences and Mathematics Commons^™

The Radio Neutrino Observatory Greenland (Rno-G): Status Update, Steffen Hallmann

Department of Physics and Astronomy: Faculty Publications

The Radio Neutrino Observatory in Greenland (RNO-G) is an in-ice radio detector for ultrahigh energy neutrinos with the potential to make the first detection of a neutrino shower beyond ∼10 PeV via the Askaryan emission. With a projected 90% CL upper limit below 𝐸²Φ ≈ 10⁻⁸ GeV/cm²/s/sr within 10 years of operation, RNO-G will reach realistic models of GZK and astrophysical neutrino fluxes. In 2021, the first three stations of RNO-G were installed and started data-taking. Four additional stations were added in 2022 with some upgrades to the station hardware. Here, we present the current …

Development Of Cooperative Catalytic Systems And Bimetallic Catalysts For Organic Synthesis, Kelton Guy Forson

Theses and Dissertations

The development of new catalysts for organic synthesis is an important pursuit that enables the discovery of new and more efficient reactions and the identification of new reaction mechanisms. Cooperative catalytic systems and bimetallic catalysts represent unique approaches to catalyst development that achieve reactivity that cannot be obtained with a single catalyst or metal. These types of catalysts can activate substrates in unique ways, facilitate reactions under mild conditions, increase substrate scope, and provide access to completely new transformations. The first part of this work describes the development of a cooperative nickel-titanium-catalyzed amination of allylic alcohols. The cooperative effects of …

Synthesis And Antibacterial Testing Of Novel Thiosulfonate Compounds, Lindsay I. Blume

USF Tampa Graduate Theses and Dissertations

Methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Staphylococcus aureus (VRSA) are increasing concerns in the medical community. In addition to the threat of Staphylococcus aureus, the increase in number and severity of infections caused by other antibiotic-resistant bacteria is problematic to human health, particularly among the ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter). The antibiotics like the penicillins and cephalosporins used commonly to treat MRSA, VRSA, and ESKAPE pathogens have continued to decline in the effectiveness. Our laboratory has developed a number of new families of anti-MRSA and anti-VRSA antibacterial compounds. In this thesis, …

Using Nuradiomc To Study The Performance Of Uhe Radio Neutrino Detectors, S. Bouma, B. Clark, P. Giri, C. Glaser, S. Hallmann, N. Heyer, Ilya Kravchenko, A. Nelles, B. Oeyen, I. Plaisier, L. Pyras, F. Schlüter, C. Welling

Department of Physics and Astronomy: Faculty Publications

NuRadioMC is an open-source, Python-based simulation and reconstruction framework for radio detectors of ultra-high energy neutrinos and cosmic rays. Its modular design makes NuRadioMC suitable for use with a range of past, current and future detectors. In addition, the recent deployment of a complete documentation as well as a pip release make NuRadioMC relatively easy to learn and use. Here, we outline the features currently available and under development in NuRadioMC, with a focus on its usage to simulate and study in-ice radio neutrino detectors.

Angular Resolution For The Radio Neutrino Observatory Greenland (Rno-G), Ilse Plaisier

Department of Physics and Astronomy: Faculty Publications

In the ultra-high energy regime, the low predicted neutrino fluxes are out of reach for currently running neutrino detectors. Larger instrumented volumes are needed to probe these lowfluxes. The Radio Neutrino Observatory Greenland (RNO-G) detects in-ice radio waves emitted by neutrino induced particle showers in the Greenlandic ice sheet. Radio waves have a large attenuation length in ice O(1 km) and therefore RNO-G implements a sparse instrumentation to cover an unprecedented volume. The first seven RNO-G stations have been deployed in the summer of 2021 and 2022 and deployment will be ongoing in the next years. This contribution discusses …

Investigating Student Engagement In General Chemistry Active Learning Activities Using The Activity Engagement Survey (Aces), Nicole Naibert, Jack Barbera

Chemistry Faculty Publications and Presentations

Investigating student engagement in active learning activities could provide valuable insight into variations of student learning outcomes when active learning is included in a course. This study sought to explore students’ engagement in relation to active learning activities incorporated in a general chemistry lecture course using the Activity Engagement Survey (AcES). The AcES can be used to simultaneously assess students’ overall engagement, as well as dimensions above and beyond overall engagement including their combined behavioral/cognitive engagement, emotional engagement, and social engagement. As students’ engagement may be influenced by aspects related to the learning environment and context, differences in engagement were …

Unomaha Problem Of The Week (2021-2022 Edition), Brad Horner, Jordan M. Sahs

UNO Student Research and Creative Activity Fair

The University of Omaha math department's Problem of the Week was taken over in Fall 2019 from faculty by the authors. The structure: each semester (Fall and Spring), three problems are given per week for twelve weeks, with each problem worth ten points - mimicking the structure of arguably the most well-regarded university math competition around, the Putnam Competition, with prizes awarded to top-scorers at semester's end. The weekly competition was halted midway through Spring 2020 due to COVID-19, but relaunched again in Fall 2021, with massive changes.

Now there are three difficulty tiers to POW problems, roughly corresponding to …

Learning To Control Under Time-Varying Environment, Yuzhen Han, Ruben Solozabal, Jing Dong, Xingyu Zhou, Martin Takac, Bin Gu

Machine Learning Faculty Publications

This paper investigates the problem of regret minimization in linear time-varying (LTV) dynamical systems. Due to the simultaneous presence of uncertainty and non-stationarity, designing online control algorithms for unknown LTV systems remains a challenging task. At a cost of NP-hard offline planning, prior works have introduced online convex optimization algorithms, although they suffer from nonparametric rate of regret. In this paper, we propose the first computationally tractable online algorithm with regret guarantees that avoids offline planning over the state linear feedback policies. Our algorithm is based on the optimism in the face of uncertainty (OFU) principle in which we optimistically …

Tunable Physical Properties In Bi-Based Layered Supercell Multiferroics Embedded With Au Nanoparticles, Jianan Shen, Zihao He, Di Zhang, Ping Lu, Julia Deitz, Zhongxia Shang, Matias Kalaswad, Haohan Wang, Xiaoshan S. Xu, Haiyan Wang

Department of Physics and Astronomy: Faculty Publications

Multiferroic materials are an interesting functional material family combining two ferroic orderings, e.g., ferroelectric and ferromagnetic orderings, or ferroelectric and antiferromagnetic orderings, and find various device applications, such as spintronics, multiferroic tunnel junctions, etc. Coupling multiferroic materials with plasmonic nanostructures offers great potential for optical-based switching in these devices. Here, we report a novel nanocomposite system consisting of layered Bi_1.25AlMnO_3.25 (BAMO) as a multiferroic matrix and well dispersed plasmonic Au nanoparticles (NPs) and demonstrate that the Au nanoparticle morphology and the nanocomposite properties can be effectively tuned. Specifically, the Au particle size can be tuned from …

Mapping Narrations, Narrating Maps: Concepts Of The World In The Middle Ages And The Early Modern Period, Ingrid Baumgartner, Daniel Gneckow, Anna Hollenbach, Phillip Landgrebe

Research in Medieval and Early Modern Culture

This volume offers the author's central articles on the medieval and early modern history of cartography for the first time in English translation. A first group of essays gives an overview of medieval cartography and illustrates the methods of cartographers. Another analyzes world maps and travel accounts in relation to mapped spaces. A third examines land surveying, cartographical practices of exploration and the production of Portolan atlases.

Comments On The Draft Butte Priority Soils Operable Unit (Bpsou) 2021 Groundwater Monitoring Data Summary Report, January 2021 – December 2021 (Dated April 8, 2022), Nikia Greene

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Comments For The Draft Residential Metals Abatement Program (Rmap) (Non- Residential Parcels) Quality Assurance Project Plan (Qapp) (Dated May 12, 2022), Nikia Greene

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Approval Letter For Revised 2021 Bres (Butte Reclamation Evaluation System) Inspection And Technical Recommendations Report (Dated May 27, 2022), Nikia Greene

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Approval Letter For Revised 2021 Stormwater Bmps Repairs, Inspection Report And Maintenance Work Plan (Dated May 27, 2022), Nikia Greene

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Draft Final 2021 Unreclaimed Sites Sampling Ur-33 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Introduction To Classical Field Theory, Charles G. Torre

All Complete Monographs

This is an introduction to classical field theory. Topics treated include: Klein-Gordon field, electromagnetic field, scalar electrodynamics, Dirac field, Yang-Mills field, gravitational field, Noether theorems relating symmetries and conservation laws, spontaneous symmetry breaking, Lagrangian and Hamiltonian formalisms.

Mobile Health Applications For Postpartum Depression Management: A Theory-Informed Analysis Of Change-Use-Engagement (Cue) Criteria In The Digital Environment, Amy Franklin, Sahiti Myneni

Faculty, Staff and Student Publications

Postpartum Depression (PPD) is the most common childbirth complication, with approximately 15% of postpartum women experiencing depression symptoms. Mobile applications have potential to expand delivery of mental health interventions. However, our understanding of how these tools engage women with PPD and facilitate positive behavioral changes is limited. In our paper, we analyze 15 commercial PPD applications to understand their role as facilitators of change, engagement, and sustained use. Applications reviewed contained an average of four theory-based behavioral change techniques, and highest patient engagement level reached was to empower patients through patient-generated data. Heuristic violations were identified in areas including user …

Virtual Expeditions Facilitated By Open Source Solutions Broaden Student Participation In Natural History Research, Richelle L. Tanner, Talia Y. Moore

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

From its genesis in the Victorian era as an activity for the elite to today's emphasis on “Big Data” and continuous monitoring, natural history has a prominent role in scientific discoveries for many fields. However, participation in field expeditions is limited by funding, space, accessibility, and safety constraints. Others have detailed the active exclusion of minoritized groups from field expeditions and harm/discrimination faced by the few who do participate, but we provide one solution to broaden opportunities for participation in natural history: Virtual Expeditions. Virtual Expeditions are broadly defined as open source, web-facilitated research activities designed to analyze bulk-collected digital …

"We've Created Cheap Energy Off The Backs Of Salmon": Dam Removal Politics And Alliances In The Lower Snake River Basin, Krista Harrington

Dissertations and Theses

Dams, once considered by many to be good for water development in the Western U.S., might not be a part of a climate resilient future. Dams have come under increasing scrutiny due to undesirable ecological implications. Although dam removal proposals are growingly popular in recent decades, they are controversial since they impact different stakeholders in different ways. In the Pacific Northwest, the Lower four Snake River dams have long been criticized for their negative impacts on salmon. In February 2021, US Congressman Mike Simpson (R-Idaho) proposed a comprehensive framework to deconstruct the Lower four Snake River dams as an attempt …

Mapping Ecosystem Service Flows Of Estuary Restoration Projects On The Oregon Coast To Identify Impacted Stakeholders, Shersten King Finley

Dissertations and Theses

The recent impetus for estuarine restoration has largely focused on resolving key ecological problems; however, less is known about how people might benefit or be impacted by restoration. By mapping benefits that flow from functional salt marshes and estuarine systems I examined how different social groups might be impacted by restoration based on race and class. In this study, I considered three ecosystem services (recreation, aesthetics, cultural/historical/spiritual) and where they might impact surrounding communities. In this paper I argue that stakeholder groups can be identified by mapping ecosystem service flow areas. I hypothesized that these three ecosystem services would have …

Flecs: A Federated Learning Second-Order Framework Via Compression And Sketching, Artem Agafonov, Dmitry Kamzolov, Rachael Tappenden, Alexander Gasnikov, Martin Takac

Machine Learning Faculty Publications

Inspired by the recent work FedNL (Safaryan et al, FedNL: Making Newton-Type Methods Applicable to Federated Learning), we propose a new communication efficient second-order framework for Federated learning, namely FLECS. The proposed method reduces the high-memory requirements of FedNL by the usage of an L-SR1 type update for the Hessian approximation which is stored on the central server. A low dimensional 'sketch' of the Hessian is all that is needed by each device to generate an update, so that memory costs as well as number of Hessian-vector products for the agent are low. Biased and unbiased compressions are utilized to …

A Preliminary Study Of Proinflammatory Cytokines And Depression Following West Nile Virus Infection, Allison Lino, Timothy A. Erickson, Melissa Nolan Ph.D., Mph, Kristy O. Murray, Shannon E. Ronca

Faculty Publications

West Nile virus (WNV) is a neurotropic flavivirus that can cause acute febrile illness leading to neuroinvasive disease. Depression is a well-described outcome following infection, but the underlying pathogenic mechanisms are unknown. Proinflammatory cytokines play important roles in WNV infection, but their role in depression post-WNV remains unstudied. This research aimed to retrospectively evaluate associations between proinflammatory cytokines and new onset depression in a WNV cohort. Participants with asymptomatic WNV infection were significantly less likely to report new onset depression when compared to those with symptomatic disease. Participants with encephalitis and obesity were significantly more likely to report new onset …

Fertilizer Waste Mistreatment Facilities: Investigating The Barrier That Keep Waste In And Attention Out At Central Florida's Phosphogypsum Stacks., Harsha Devaraj

Masters Theses

This project investigates the physical and narrative barriers constructed by the phosphate mining and processing industry to dissuade public engagement with its phosphogypsum sites in Central Florida, USA. The barriers around PG utilize decades of misinformation, racial geographies, and misrepresentations of scale, origin, and risk to create powerful narratives about how we should imagine and relate to these materials. These barriers hinder sustained public attention to their sites, enabling extractive industries to expand while avoiding oversight and responsibility. Attention to how these barriers around phosphogypsum are constructed allows us to recognize these strategies at work in how we see and …

The Tails Of Two Avian Schistosomes: Paired Exposure Study Demonstrates Trichobilharzia Stagnicolae Penetrates Human Skin More Readily Than A Novel Avian Schistosome From Planorbella, Nathaniel J. Anderson, Curtis L. Blankespoor, Randall J. Dejong

University Faculty Publications and Creative Works

A novel schistosome from Planorbella snails currently known as avian schistosomatid sp. C (ASC) was recently described as being capable of causing the papules associated with swimmer’s itch. We conducted a paired study with 24 human volunteers, exposing each of their forearms to five drops of water containing cercariae of ASC or Trichobilharzia stagnicolae, and examined the skin for papules 1–3 days later. A mixed effects model showed that only the parasite species significantly affected the number of papules, while prior experimental exposure, swimming history, and swimmer’s itch experience did not. The total number of papules produced by the two …

The Synthesis Of Deuterated Isohumulones For Use As Internal Standards In Lc-Ms Stable Isotope Dilution Assays, Patrick Gleason, Bruce Hamper Dr.

Undergraduate Research Symposium

Humulones are compounds that are prevalent in the hops flowers (Humulus Lupulus) used in beer brewing. These compounds undergo isomerization during the brewing process, and the resulting isohumulones are considered to be the primary contributors to the bitter flavors present in beer. As such, quantifying their presence, and the relative presence of their homologs(n-, co-, ad-), is of great importance in the characterization of beer. In this effort, one of the homologs of humulone (co) was isolated before being subsequently isomerized and deuterated for the purpose of analyzing beer by stable isotope dilution assay mass spectrometry(SIDA-MS). The addition of this …

Session 4: Plunging Into Deep Water: An Immersion In Fintech, Defi (Decentralized Finance), & Web3, Joseph M. Vincent

SITIE Symposiums

This panel featured entrepreneurs providing their expert insight into the background, workings, and expected developments of the FinTech industry. Moderated by Adjunct Professor of Law Joseph M. Vincent, the panel features Ron Oliveira, Kory Hoang, and Jonathan Blanco.

The panelists provided insight on topics regarding: (1) the fundamental changes in financial services since the advent of FinTech; (2) background on the Stablecoin industry including a background of what Stablecoin is, and why it has been under recent scrutiny; and (3) the NFT market and the direction the NFT space is heading. In a Q&A session, the panelists also offered their …

Session 3: Deep Innovation Dive In Health Equity: Truveta (“Saving Lives With Data”), Steve Tapia, Dave Heiner

SITIE Symposiums

This session is a “deep dive” into health equity and research via a moderated discussion with Truveta, a new data partnership company poised for research breakthroughs in the healthcare sector. In it, Dave Heiner, General Counsel and Chief Policy Officer for Truveta, discusses the company’s healthcare-centered mission and the key role that data plays in the healthcare field.

Session 2: Diversity Perspectives: In-House Counsel, Debbie Akhbari

SITIE Symposiums

This expert panel addressed diversity perspectives in the legal field. Moderated by Debbie Akhbari, six panelists shared their stories. The panelists were Leticia Hernández, Bernadette Lopez, Elida Moran, Catherine Romero, Rachel Seals, and Katina Thornock. Each panelist's stories have been broken into its own section in the summary of proceedings.

Many diverse candidates have incorrect assumptions made about them, resulting in doors being closed by those in positions of power. This panel shared their personal stories and encouraged students and newer attorneys to keep “knocking on those doors” and for those in positions of power to open those doors. Through …

Session 1: Innovation In Legal Services, Steven W. Bender, Michael Cherry, Matthew Spencer

SITIE Symposiums

This panel featured two “disrupters” who detailed their experiences innovating in the legal services space. The first panelist spoke about data-driven regulatory reform and the other spoke as an entrepreneur whose product introduces artificial intelligence (AI) into the legal recruiting process. Two additional panelists provided commentary regarding the second panelist’s presentation.

The panel provided insight on the topics of: (1) the legal regulatory process at large; (2) how a data-driven and feedback-oriented sandbox provides an alternative regulatory process; (3) the legal hiring and recruiting process and (4) how AI allows law firms to consider alternative hiring metrics when assessing candidates …

Introduction To The 5th Annual Innovation And Technology Law Conference, Annette Clark

SITIE Symposiums

Seattle University School of Law’s then dean, now Dean Emerita, Annette Clark, opens the 5^th annual Innovation and Technology Law Conference, co-sponsored by the Seattle Journal of Technology, Environmental, and Innovation Law (SJTEIL) at Seattle University School of Law. Annette Clark has been involved with the planning and organization of the Innovation and Technology Law Conference since the conference’s inception. The theme of the 5^th annual 2022 conference is “deep innovation dives.”

Annette Clark explains that “This conference is part of our continuing efforts at Seattle [University] Law to expand educational opportunities for our students and community in …