Digital Commons Network^™

Anomalous Collective Modes In Atomic Nuclei Within The Proton-Neutron Interacting Boson Model, Wei Teng, Yu Zhang, Sheng Nan Wang, Feng Pan, Chong Qi, J. P. Draayer

Faculty Publications

Novel collective modes characterized by a B4/2 ratio (≡B(E2;41⁺→21⁺)/B(E2;21⁺→01⁺)) less than 1.0 that were observed recently have been identified within the proton-neutron interacting boson model (IBM-2) using the consistent-Q Hamiltonian. These modes are shown to give rise to triaxial spectral features, including significant band mixing. The results provide a compelling explanation for the deeply suppressed B4/2 ratio observed in ¹⁶⁶W, ^168,170Os, and ¹⁷²Pt, offering new insights into the B(E2) anomaly phenomenon in neutron-deficient nuclei.

Theory Of Two-Level Tunneling Systems In Superconductors, Junguang He, Wei Ting Lin, J. A. Sauls

Faculty Publications

We develop a field theory formulation for the interaction of an ensemble of two-level tunneling systems (TLSs) with the electronic states of a superconductor. Predictions for the impact of two-level tunneling systems on superconductivity are presented, including Tc and the spectrum of quasiparticle states for conventional BCS superconductors. We show that nonmagnetic TLS impurities in conventional s-wave superconductors can act as pair-breaking or pair-enhancing defects depending on the level population of the distribution of TLS impurities. We present calculations of the enhancement of superconductivity, both Tc and the order parameter, for TLS defects in thermal equilibrium with the electrons and …

Quantum Classical Algorithm For The Study Of Phase Transitions In The Hubbard Model Via Dynamical Mean-Field Theory, Anshumitra Baul, Herbert Fotso, Hanna Terletska, Ka Ming Tam, Juana Moreno

Faculty Publications

Modeling many-body quantum systems is widely regarded as one of the most promising applications for near-term noisy quantum computers. However, in the near term, system size limitation will remain a severe barrier for applications in materials science or strongly correlated systems. A promising avenue of research is to combine many-body physics with machine learning for the classification of distinct phases. We present a workflow that synergizes quantum computing, many-body theory, and quantum machine learning (QML) for studying strongly correlated systems. In particular, it can capture a putative quantum phase transition of the stereotypical strongly correlated system, the Hubbard model. Following …

Interval Spectrum For Electric Quantum Walk And Related Skew-Shift Cmv Matrices, Fan Yang

Faculty Publications

We show that for a family of quantum walk models with electric fields, the spectrum is the unit circle for any irrational field. The result also holds for the associated CMV matrices defined by skew-shifts, as well as a family of the Blattner and Browne model. Generalizations to CMV matrices with skew-shifts on higher dimensional torus are also obtained.

Facial Recognition Ai, Margaret Hu

Faculty Publications

The integration of algorithmic decisionmaking and artificial intelligence (“AI”) into facial recognition technology poses new, unprecedented risks to privacy and individual autonomy rights, particularly in urban settings. The murder of Brian Thompson, CEO of UnitedHealthcare, in New York City on December 4, 2024, provides a timely case study to examine the deployment of facial recognition systems by the New York Police Department and other law enforcement agencies to identify the suspect. New York City deploys some of the most sophisticated surveillance architecture in the nation, put into place following the terrorist attacks of September 11, 2001. This Article explores the …

Unwarranted Warrants?: An Empirical Analysis Of Judicial Review In Search And Seizure, Brett James Hashimoto, Miguel F.P. De Figueiredo, Dane Thorley

Faculty Publications

Every year, police perform searches governed by the Fourth Amendment on hundreds of thousands of individuals and their property throughout the United States. Many of the academy’s most decorated scholars have focused on the genesis and jurisprudential nature of the Fourth Amendment’s warrant requirement. Surprisingly, we know almost nothing about how the Fourth Amendment regulates searches and how searches actually work in practice.

In this Article, we pull back the curtain on the search and seizure process by presenting the largest quantitative study of warrants of any kind. We analyze over 33,000 warrant applications filed through Utah’s “e-Warrants” system over …

Carolyn Parker's Electronic Frequencies, Charnell Chasten Long

Faculty Publications

The chapter illustrates what it meant for Carolyn Beatrice Parker (1917–1966) to be a Black woman physicist in the US during the Jim Crow era. Her father, a physician, and her mother, a teacher, shepherded her into Fisk University, an historically Black college. As a physics major she studied infrared spectroscopy with the Black physicist Elmer Imes, graduating with a BS in 1938. She later attended the University of Michigan, obtaining an MA in physics in 1941. But like many Black women, she spent time before and after graduate school teaching in the K–12 system. In 1943, she became a …

Residential Factors Associated With Mental Health In United States Veterans, Air Force Military, And Air Force Employees, Andrew J. Hoisington, Christopher A. Stamper, Molly Penzenik, Meredith Reitter, Elizabeth J. Kovacs, Nazanin H. Bahraini, Lisa A. Brenner

Faculty Publications

Individuals in Westernized countries spend most of their time indoors. However, exploration of residential building factors that may influence occupants’ mental health is limited in scientific literature. The purpose of this study was to explore investigator's perceived areas of importance in residences to mental health via survey methods. To that end, we administered the Housing, Occupancy, Materials, and Environment (HOME) survey to assess factors that may influence mental health to those working in the United States (US) Air Force (n = 230) or past military members, US Veterans (n = 180). Self-reported mental health surveys were also administered to the …

Iberian Origins Of New Mexico's Community Acequias, Jose A. Rivera Ph.D., Thomas F. Glick Ph.D.

Faculty Publications

When Spanish officials first entered the northern region of New Spain in the late sixteenth century, they realized that irrigation would be a necessary development in the establishment of permanent communities. To sustain the early settlements, they built irrigation systems following the Iberian model, itself an extension of Arabo-Berber traditions from north Africa and the Middle East.

Motivations For Early High-Profile Frib Experiments, B. Alex Brown, Alexandra Gade, S. Ragnar Stroberg, Jutta E. Escher, Kevin Fossez, Pablo Giuliani, Calem R. Hoffman, Witold Nazarewicz, Chien Yeah Seng, Agnieszka Sorensen, Nicole Vassh, Daniel Bazin, Kyle W. Brown, Mark A. Caprio, Heather Crawford, Pawel Danielewicz, Christian Drischler, Ronald F. Garcia Ruiz, Kyle Godbey, Robert Grzywacz, Linda Hlophe, Jeremy W. Holt, Hiro Iwasaki, Dean Lee, Silvia M. Lenzi, Sean Liddick, Rebeka Lubna, Augusto O. Macchiavelli, Gabriel Martínez-Pinedo, Anna Mccoy, Alexis Mercenne, Kei Minamisono, Belen Monteagudo

Faculty Publications

This white paper is the result of a collaboration by many of those that attended a workshop at the facility for rare isotope beams (FRIB), organized by the FRIB Theory Alliance (FRIB-TA), on ‘Theoretical Justifications and Motivations for Early High-Profile FRIB Experiments’. It covers a wide range of topics related to the science that will be explored at FRIB. After a brief introduction, the sections address: section 2: Overview of theoretical methods, section 3: Experimental capabilities, section 4: Structure, section 5: Near-threshold Physics, section 6: Reaction mechanisms, section 7: Nuclear equations of state, section 8: Nuclear astrophysics, section 9: Fundamental …

Snow, Ice And Permafrost Landscapes As ‘Frozen Commons’: Examples From Northern Mongolia, Mariia Kuklina, Vera Kuklina, Nikolay Shiklomanov, Alexander Shiklomanov, Kelsey Nyland, Khadbaatar Sandag, Enkh Amgalan Sandag, Natalia Krasnoshtanova, Dmitrii Kobylkin, Alexander Kholodov, Andrey Petrov

Faculty Publications

Cryosphere has a global role as a biogeophysical phenomenon. It affects the livelihoods of people inhabiting permafrost areas and is affected by human activity within and outside of the cryosphere’s geographical span. ‘Frozen commons’ (FCs) are cryosphere resources and landscapes, defined by snow, ice, and permafrost, that are experienced, used, protected and managed by groups of people together. This paper highlights collaboration between herders and scientists aimed at improving the understanding of FCs in northern Mongolia, a region of rapid cryosphere transformation. The impact of climate change on Indigenous and pastoralist communities in Mongolia is profound, leading to the damage …

Neo-Gender Balancing In Saudi Arabia: Divorce Under Social Exchange Theory, Abdullah F. Alrebh, Radhi H. Al-Mabuk

Faculty Publications

This paper uses Richard Emerson’s social exchange theory to analyze the balance in the exchange relations between men and women in Saudi Arabia. The paper is comprised of four major sections: (1) Emerson’s social exchange theory; (2) Saudi women in Vision 2030; (3) Statistics on Saudi women marital status; (4) Power dependence. Emerson’s five assumptions are applied to cases of Saudi women in order to demonstrate how winds of social change are affecting not only attitudes but also actual behaviors and decisions regarding divorce. Using the Comparison Level for Alternatives model, the results of the analysis are reported, and a …

Impact Of Social Media On Family Relations In The Arab Gulf Region, Radhi H. Al-Mabuk, Abdullah F. Alrebh

Faculty Publications

Social media use especially among children and adolescents has become a topic of concern in the Gulf region especially for parents. This chapter addresses the issue of social media use and its impact on family relations, and is comprised of six parts: (1) place of social media in sociology; (2) prevalence of social media in the Gulf region with an emphasis on how much use, nature of use and motivation for use; (3) positive and detrimental consequences of social media use; (4) impact of social media use, especially problematic social media, on family relations; (5) parents’ role in guiding their …

The Influence Of Geographic Ranges, Climatic Niches And Temperature Fluctuations On Population Variability, Cleber Ten Canten, Lauren Holian, Tad Dallas

Faculty Publications

The existence of patterns in population dynamics across species geographic ranges and climatic niches is a pervasive idea in ecology. Population variability (i.e. temporal variability in population density) should hypothetically increase near range edges or niche limits because of less suitable environments in these areas, but the occurrence of such patterns remains largely unexplored. Further, fluctuations in temperature could pose demographic constraints on populations and also influence their variability. We used Breeding Bird Survey data to show that the population variability of 97 resident North American birds consistently increases towards their niche limits and in areas with more variable temperatures, …

Implementation Outcomes And Associated Constructs From The Consolidated Framework For Implementation Research Among Churches Trained Online To Implement Faith, Activity, And Nutrition In A National Implementation Study, Sara Wilcox Phd, Ruth P. Saunders Phd, Andrew T. Kaczynski Ph.D., Caroline Rudisill Ph.D., Msc, Ye Sil Kim Phd, Jasmin Parker-Brown, Kelsey R. Day

Faculty Publications

Churches hold promise for reaching populations with high rates of chronic disease, yet few faith-based large-scale implementation studies exist. The study purpose was to examine 12-month implementation outcomes and associated Consolidated Framework for Implementation Research (CFIR) constructs after converting in-person training to online for an evidence-based intervention designed to improve church organizational practices related to physical activity (PA) and healthy eating (HE). US churches recruited from 2020 to 2022 participated in eight online lessons prior to implementation. Each church’s coordinator completed an online baseline and 12-month survey assessing church practices for PA/HE components targeted in the Faith, Activity, and Nutrition …

The Role Of Civic Education On The Types And Causes Of Bullying In School, Besim Gollopeni, Ferdi Kamberi, William R. Henninger

Faculty Publications

Educational institutions have a responsibility to create a safe and peaceful environment, where the emotional and social well-being of students is promoted. In such an environment, students are encouraged to engage with pleasure in the learning process to develop their knowledge but also to interact constructively with their peers, strengthening their social skills and sense of belonging to the community. Such an environment is being challenged by the spread of the phenomenon of bullying, which creates deep concerns among students, parents, schools and the community. This study aims to investigate the types, causes and effects that lead to the occurrence …

Surface Resistivity Correlation To Nano-Defects In Laser Powder Bed Fused Molybdenum (Mo)-Silicon Carbide (Sic) Alloys, Andrew Mason, Larry W. Burggraf, Ryan A. Kemnitz, Nate Ellsworth

Faculty Publications

The integration of Silicon Carbide (SiC) nanoparticles into Laser Powder Bed Fusion (LB-PBF) Molybdenum (Mo) printing represents a significant advancement in refractory metal additive manufacturing. Our investigation examined how varying SiC nanoparticle sizes affect the microstructural and electrical properties of LB-PBF-printed molybdenum components while maintaining a 0.01 mass fraction of Mo. At an Linear Energy Densities (LED) of 1.8 J/mm, the addition of 80 nm SiC particles achieved a 46% reduction in porosity, while sheet resistance decreased by 6% at LED of 2.0 J/mm with 80 nm SiC particles. These performance improvements stem from several mechanisms: SiC particles serve as …

Enhanced Nuclear Binding Near The Proton Drip Line Opens Possible Bypass Of The 64Ge Rapid Proton Capture Process Waiting Point, Zachary Meisel, W.-J Ong, J. S. Ranhawa

Faculty Publications

We performed astrophysics model calculations with updated nuclear data to identify a possible bypass of the ⁶⁴Ge waiting point, a defining feature of the rapid proton capture (rp) process that powers type I X-ray bursts on accreting neutron stars. We find that the rp-process flow through the 64Ge bypass could be up to 36% for astrophysically relevant conditions. Our results call for new studies of ⁶⁵Se, including the nuclear mass, β-delayed proton emission branching, and nuclear structure as it pertains to the 64As(p, γ) reaction rate at X-ray burst temperatures.

The Nature Of Optical Afterglows Without Gamma-Ray Bursts: Identification Of At2023lcr And Multiwavelength Modeling, Maggie L. Li, Anna Y.Q. Ho, Geoffrey Ryan, Daniel A. Perley, Gavin P. Lamb, A. J. Nayana, Igor Andreoni, G. C. Anupama, Eric C. Bellm, Edo Berger, Joshua S. Bloom, Eric Burns, Ilaria Caiazzo, Poonam Chandra, Michael W. Coughlin, Kareem El-Badry, Matthew J. Graham, Mansi Kasliwal, Garrett K. Keating, S. R. Kulkarni, Harsh Kumar, Frank J. Masci, Richard A. Perley, Josiah Purdum, Ramprasad Rao, Antonio C. Rodriguez, Ben Rusholme, Nikhil Sarin, Jesper Sollerman, Gokul P. Srinivasaragavan, Vishwajeet Swain, Zachary Vanderbosch

Faculty Publications

In the past few years, the improved sensitivity and cadence of wide-field optical surveys have enabled the discovery of several afterglows without associated detected gamma-ray bursts (GRBs). We present the identification, observations, and multiwavelength modeling of a recent such afterglow (AT 2023lcr), and model three literature events (AT 2020blt, AT 2021any, and AT 2021lfa) in a consistent fashion. For each event, we consider the following possibilities as to why a GRB was not observed: (1) the jet was off-axis; (2) the jet had a low initial Lorentz factor; and (3) the afterglow was the result of an on-axis classical GRB …

Integrating Community Assets, Place-Based Learning, And Career Development Through Project-Based Learning In Rural Settings, Denae Kizys, Christine Lotter Ph.D., Lucas Perez, Rachel Gilreath, Dodie Limberg

Faculty Publications

Our study investigates the first year of a two-year place-based education (PBE) professional development model that focuses on career development in rural middle schools through project-based learning (PBL) units. Rural science, technology, engineering, and mathematics (STEM) educators face unique challenges, including geographic isolation, limited resources, and reduced access to professional development opportunities, which can hinder the effective integration of career-oriented learning in the classroom. We addressed these challenges by implementing professional development in which school counselors and teachers collaborate to design PBL units aligned with rural community local needs and STEM careers. Using a descriptive multiple-case study methodology to document …

Extreme Bandgap Polarization Doped Algan Layers On Bulk Aln For Pn-Diodes With An 8.5 Mv Cm−1 Breakdown Field And Forward Current Density Exceeding 20 Ka Cm−2, Tariq Jamil, Abdullah Al Mamun Mazumder, Muhammad Ali, Mafruda Rahman, Kenneth Stephenson, Grigory Simin, Asif Khan

Faculty Publications

In this paper we present a study of distribution polarization doped Al_xGa_1−xN layers and their use in quasi-vertical configuration pn-diodes which exhibited a high breakdown field of ∼8.5 MV cm⁻¹ and a large forward current density (∼23 kA cm⁻²). We also establish their potential use in UVC light emitters by studying the optical emission from a quantum well inserted at the distribution polarization doped pn-junction interface.

Hydrogen Peroxide Photoformation In Particulate Matter And Its Contribution To S(Iv) Oxidation During Winter In Fairbanks, Alaska, Michael Oluwatoyin Sunday, Laura Marie Dahler Heinlein, Junwei He, Allison Moon, Sukriti Kapur, Ting Fang, Kasey C. Edwards, Fangzhou Guo, Jack E. Dibb, James H. Flynn Iii, Becky Alexander, Manabu Shiraiwa, Cort Anastasio

Faculty Publications

The high levels of sulfate in wintertime particles in Fairbanks, Alaska, are a subject of keen research interest and regulatory concern. Recent results from the 2022 Alaska Layered Pollution And Chemical Analysis (ALPACA) field campaign indicate that roughly 40 % of wintertime sulfate in Fairbanks is secondary, with hydrogen peroxide (HOOH) the dominant oxidant. Since formation of HOOH in the gas phase should be negligible during ALPACA because of high levels of NOx, we examined whether reactions within particles could be a significant source of HOOH. To test this, we collected particulate matter (PM) samples during the ALPACA campaign, extracted …

Using T-Sne For Characterizing Glitches In Ligo Detectors, Tabata Aira Ferreira, Gabriela González

Faculty Publications

Glitches are non-Gaussian noise transients originating from environmental and instrumental sources that contaminate data from gravitational wave detectors. Some glitches can even mimic gravitational wave signals from compact object mergers, which are the primary targets of terrestrial observatories. In this study, we present a method to analyze noise transients from the Laser Interferometer Gravitational-Wave Observatory observatories using Q-transform information combined with t-distributed stochastic neighbor embedding. We implement classification techniques, examine the influence of parameters on glitch classification, and conduct a week-long daily analysis to track outlier transients over time.

Generative Ai For Thematic Analysis In A Maternal Health Study: Coding Semistructured Interviews Using Large Language Models, Shan Qiao, Xingyu Fang, Junbo Wang, Ran Zhang, Xiaoming Li, Yuhao Kang

Faculty Publications

Study Objectives: The coding of semistructured interview transcripts is a critical step for thematic analysis of qualitative data. However, the coding process is often labor-intensive and time-consuming. The emergence of generative artificial intelligence (GenAI) presents new opportunities to enhance the efficiency of qualitative coding. This study proposed a computational pipeline using GenAI to automatically extract themes from interview transcripts. Methods: Using transcripts from interviews conducted with maternity care providers in South Carolina, we leveraged ChatGPT for inductive coding to generate codes from interview transcripts without a predetermined coding scheme. Structured prompts were designed to instruct ChatGPT to generate and summarize …

Impact Of Prior Exposures On Biomarkers Of Blast During Military Tactical Training, Zhaoyu Wang, Shengnan Sun, Alis Aksar Kranfli, Jeffrey Nemes, Molly J. Sullan, Andrew J. Hoisington, Lisa A. Brenner, Miciej Skotak, Christina R. Lavalle, Yongchao Ge, Walter Carr, Fatemah Haghighi

Faculty Publications

Blast injuries and subclinical effects are of significant concern among those Service Members (SMs) participating in military operations and tactical trainings. Studies of SMs repeatedly exposed during training find concussion-like symptomology with transient decrements in neurocognitive performance, and alterations in blood biomarkers. How prior mild TBI (mTBI) history interacts with low-level blast (LLB) exposure, however, remains unexplored, which we investigate in the present study, to identify interindividual biomarker changes from LLB exposures influenced by prior history of mTBI.

Pulse Pressure, White Matter Hyperintensities, Andcognition: Mediating Effects Across The Adult Lifespan, Jade Hannan, Sarah Newman-Norlund, Natalie Busby, Sarah C. Wilson, Roger Newman-Norlund, Chris Rorden, Julius Fridriksson, Leonardo Bon, Nicholas Riccardi

Faculty Publications

Objectives: To investigate whether pulse pressure or mean arterial pressure mediates the relationship between age and white matter hyperintensity load and to examine the mediating effect of white matter hyperintensities on cognition.

Methods: Demographic information, blood pressure, current medication lists, and Montreal Cognitive Assessment scores for231 stroke- and dementia-free adults were retrospectively obtained from the Aging Brain Cohort study. Total WMH load was determined from T2-FLAIR magnetic resonance scans using the TrUE-Net deep learning tool for white matter segmentation. In separate models, we used mediation analysis to assess whether pulse pressure or MAP mediates the relationship between age and total …

Pulse Pressure, White Matter Hyperintensities, And Cognition: Mediating Effects Across The Adult Lifespan, Jade Hannan, Sarah Newman-Norlund, Natalie Busby, Sarah C. Wilson, Roger Newman-Norlund, Chris Rorden, Julius Fridriksson Ph.D., Leonardo Bonilha

Faculty Publications

Objectives: To investigate whether pulse pressure or mean arterial pressure mediates the relationship between age and white matter hyperintensity load and to examine the mediating effect of white matter hyperintensities on cognition.

Methods: Demographic information, blood pressure, current medication lists, and Montreal Cognitive Assessment scores for231 stroke- and dementia-free adults were retrospectively obtained from the Aging Brain Cohort study. Total WMH load was determined from T2-FLAIR magnetic resonance scans using the TrUE-Net deep learning tool for white matter segmentation. In separate models, we used mediation analysis to assess whether pulse pressure or MAP mediates the relationship between age and total …

Untethered Isoperimetric Robotic Truss For Lunar Applications, Mihai Stanciu, Spencer Stowell, Isaac Weaver, Adam Rose, Chris Paul, James Wade, Ashleigh Cerven, Annie O'Bryan, Brian Bodily, Logan Yang, Nathan Usevitch

Faculty Publications

We introduce a robotic system designed to function as a lightweight, modular, and reconfigurable structure on the Moon. This robust system consists of truss-like robotic triangles, each formed by a continuous inflated fabric tube routed through two robotic roller units and a connecting unit. When deflated, these triangles can be compacted to roughly the volume of the roller units, offering an advantageous stowed-to-deployed volume ratio of 1 to 6.24. Upon inflation, the roller units pinch the tubes, creating corners by reducing the bending stiffness of the tube. Once fully deployed, electric motors move the robotic roller units along the tube, …

Podcasts In Mental, Physical, Or Combined Health Interventions For Adults: Scoping Review, Elizabeth M. Dascombe, Philip J. Morgan, Ryan J. Drew, Casey P. Regan, Gabrielle Turner-Mcgrievy, Myles D. Young

Faculty Publications

Background:

The increasing prevalence of poor mental and physical health in adults is a global health concern. Given the scope of this problem, scalable and effective treatment interventions are needed. While podcasts (online digital audio files) are becoming more popular, the extent of podcast use in mental, physical, or combined health interventions has not been reviewed.

Objective:

This scoping review primarily aims to summarize the available evidence regarding the use of podcasts in health promotion interventions. A series of 5 research questions was designed to systematically review and accurately represent podcast use in current research interventions.

Methods:

We conducted a …

Review Of Tethered Unmanned Aerial Vehicles: Building Versatile And Robust Tethered Multirotor Uav System, Dario Handrick, Mattie Eckenrode, Junsoo Lee

Faculty Publications

This paper presents a comprehensive review of tethered unmanned aerial vehicles (UAVs), focusing on their challenges and potential applications across various domains. We analyze the dynamic characteristics of tethered UAV systems and address the unique challenges they present, including complex tether dynamics, impulsive forces, and entanglement risks. Additionally, we explore application-specific challenges in areas such as payload transportation and ground-connected systems. The review also examines existing tethered UAV testbed designs, highlighting their strengths and limitations in both simulation and experimental settings. We discuss advancements in multi-UAV cooperation, ground–air collaboration through tethers, and the integration of retractable tether systems. Moreover, we …