Digital Commons Network^™

The Lsu-Argonne Conversion Electron Spectrometer: A New Detector For The X-Array And Saturn Decay Station, S. Lopez-Caceres, S. T. Marley, M. P. Carpenter, G. Savard, F. G. Kondev, P. Copp, W. Reviol, C. Müller-Gatermann, D. Seweryniak, J. A. Clark, D. Santiago-Gonzalez, G. E. Morgan, A. J. Mitchell, G. L. Wilson, M. L. Smith

Faculty Publications

A new conversion electron detector has been commissioned at the ATLAS/ CARIBU facility at Argonne National Laboratory. The LSU-Argonne Conversion Electron Spectrometer (LACES) is a LN2-cooled Si(Li) detector system designed to be incorporated into a decay station that comprises the dedicated HPGe clover array with a box geometry (X-Array) and the Scintillator and Tape Using Radioactive Nuclei (SATURN) device. This integration enables simultaneous measurements of conversion electrons and gamma-rays in decay experiments, yielding novel information on transition multipolarities, electric monopole transitions, and isomeric states that decay mostly via conversion electrons. A measurement of the energy resolution of LACES yielded 2.3-keV …

The Roles Of Perceived Safety Climate And Innovativeness In The Performance Of Sport And Recreation Organizations, Minjung Kim, Han Soo Kim, Brent D. Oja, Jasamine Hill, Claire Zvosec, Paul Yuseung Doh

Faculty Publications

The recent COVID-19 pandemic created an unpredictable environment regarding the safety operations of sport and recreation organizations. This study was designed to examine how safety climate and organizational innovativeness could promote preferred organizational behavior outcomes in college campus sport and recreation centers. A total of 227 sport and recreation employees were recruited through the National Intramural and Recreational Sports Association. With the collected data, we employed structural equation modeling to assess the research hypotheses. The results indicated that safety climate and innovativeness positively influenced job engagement, therefore leading to enhanced safety compliance and employee innovativeness, which ultimately resulted in higher …

Dispersal Sweepstakes: Biotic Interchange Propelled Air-Breathing Fishes Across The Globe, Richard C. Harrington, Matthew Kolmann, Julia J. Day, Brant C. Faircloth, Matt Friedman, Thomas J. Near

Faculty Publications

Aim: Biotic interchanges between Africa, India, and Eurasia are central to explaining the present-day distribution and diversity of freshwater organisms across these landmasses. Synbranchiformes is a diverse and species-rich clade of freshwater acanthomorph fishes found on all southern continents except Antarctica, and include eel- and perch-like, air-breathing and non-air-breathing fishes. Lacking a comprehensive and resolved phylogeny of the entire clade, contemporary interpretations of synbranchiform biogeography invoke scenarios as disparate as Gondwanan vicariance and pan-global rafting to explain their modern-day distribution. Here, we study their biogeographic history of continental dispersal events and test whether these are associated with increases in lineage …

In The Spotlight—Early Career Researcher, Patricia Schneider

Faculty Publications

No abstract provided.

Cellulose Nanofiber As Mask/Personal Protective Equipment Surface Agent For Enhanced Anti-Bacterial Performance, Sophia Jackson, Jonathan Chen

Faculty Publications

The utilization of face-covering masks as an extended form of personal protective equipment has led to exponential waste measures during the COVID-19 pandemic, with estimations of up to 7200 tons of medical-type waste daily. A primary cause of this waste is surgical layered disposable masks that are constructed by melt-blown nonwovens usually made of non-biodegradable thermoplastic polymers like polypropylene. To increase widespread sustainable options to the public, commercialized or do-it-yourself-based fabric masks serve as a solution, but their resistance to harmful molecules is less than that of the medical-grade masks due to the fabric structure that leaves space for penetration. …

Research: Why Do It?, Tom Goodwin

Faculty Publications

No abstract provided.

Cpeb3 Maintains Developmental Competence Of The Oocyte, Lucie Lamacova, Denisa Jansova, Zongliang Jiang, Michal Dvoran, Daria Aleshkina, Rajan Iyyappan, Anna Jindrova, Heng Yu Fan, Yuxuan Jiao, Andrej Susor

Faculty Publications

Mammalian oocyte development depends on the temporally controlled translation of maternal transcripts, particularly in the coordination of meiotic and early embryonic development when transcription has ceased. The translation of mRNA is regulated by various RNA-binding proteins. We show that the absence of cytoplasmic polyadenylation element-binding protein 3 (CPEB3) negatively affects female reproductive fitness. CPEB3-depleted oocytes undergo meiosis normally but experience early embryonic arrest due to a disrupted transcriptome, leading to aberrant protein expression and the subsequent failure of embryonic transcription initiation. We found that CPEB3 stabilizes a subset of mRNAs with a significantly longer 3’UTR that is enriched in its …

Aerial, Surface, And Subsurface Multimodal Mapping In Coastal Peru: Insights From Cerro San Isidro, Moro Region, Nepeña Valley, Kayla Golay Lausanne, David Chicoine, Jeisen Navarro Vega, George F. Lau

Faculty Publications

This article describes a series of steps to integrate multiple modes of archaeological mapping in arid and agricultural settings. We use the coastal region of Peru as a case study and share our recent field experience at Cerro San Isidro, a multicomponent hill site located in the agriculture-intensive and mid-elevation (about 500 m asl) Moro region of the Nepeña Valley. In June and July 2022, we spent eight weeks deploying a combination of drone aerial imagery, pedestrian GPS reconnaissance, and GPR survey to map the surface and subsurface features at the site and in the adjacent agricultural fields. Our efforts …

Editorial Introduction: Exploring The Frontier Of Policy Theory Research, Geoboo Song, Melissa K. Merry, Saba Siddiki, Gwen Arnold, Aaron Smith-Walter, Holly L. Peterson, Creed Tumlison, Heasun Choi, Briana Huett, Davor Mondom, Christopher Giller, Meerim Seiitova

Faculty Publications

No abstract provided.

Constitutional Rights And Remedial Consistency, Katherine Mims Crocker

Faculty Publications

When the Supreme Court declined definitively to block Texas’s S.B. 8, which effectively eliminated pre-enforcement federal remedies for what was then a plainly unconstitutional restriction on abortion rights, a prominent criticism was that the majority would have never tolerated the similar treatment of preferred legal protections—like gun rights. This refrain reemerged when California enacted a copycat regime for firearms regulation. This theme sounds in the deep-rooted idea that judge-made law should adhere to generality and neutrality values requiring doctrines to derive justification from controlling a meaningful class of cases ascertained by objective legal criteria.

This Article is about consistency, and …

Making Library Student Employment More Meaningful, Jeremy Myntti

Faculty Publications

Generally speaking, the twofold mission of a university includes both research and teaching. While each institution has a varying degree of focus on these two overarching missions, universities are in the business of advancing knowledge and producing high-quality graduates ready for a competitive job market.

Judges Should Be Discerning Consensus, Not Evaluating Scientific Expertise, David S. Caudill, Harry Collins, Robert Evans

Faculty Publications

One of the most constructive critiques of the Daubert admissibility regime is Professor Edward Cheng’s recent proposal for a new Consensus Rule in the Federal Rules of Evidence. Rejecting the notion that judges and juries have the capacity to evaluate scientific expertise, Cheng’s proposal would eliminate Daubert hearings—and judicial gatekeeping concerning expert testimony—and require judges and juries, in their verdicts, to follow consensus in the relevant scientific community. Significantly, Cheng argues that judges and juries would have an easier time identifying consensus than they have in deciding between experts who disagree.

We find Cheng’s emphasis on consensus compelling, and …

A Sensor-Based Simulation Method For Spatiotemporal Event Detection, Yuqin Jiang, Andrey A. Popov, Zhenlong Li, Michael E. Hodgson, Binghu Huang

Faculty Publications

Human movements in urban areas are essential to understand human–environment interactions. However, activities and associated movements are full of uncertainties due to the complexity of a city. In this paper, we propose a novel sensor-based approach for spatiotemporal event detection based on the Discrete Empirical Interpolation Method. Specifically, we first identify the key locations, defined as “sensors”, which have the strongest correlation with the whole dataset. We then simulate a regular uneventful scenario with the observation data points from those key locations. By comparing the simulated and observation scenarios, events are extracted both spatially and temporally. We apply this method …

Chemically Amplified, Dry-Develop Poly(Aldehyde) Photoresist, Jose Lopez Ninantay, Anthony Engler, Jared Schwartz, Paul A. Kohl

Faculty Publications

The catalytic decomposition of poly(phthalaldehyde) with a photoacid generator can be used as dry-develop photoresist, where the exposed film depolymerizes into small molecules to allow the development of features via controlled vaporization. Higher temperatures enabled shorter dry-development times, but also promoted faster photoacid diffusion that compromised pattern fidelity. Trihexylamine was used as a base quencher to counteract acid diffusion in a phthalaldehyde-propanal co-polymer photoresist. The propanal co-monomer in the polymer improves the vaporization rate because it has a higher vapor pressure than phthalaldehyde. Addition of the base quencher was found to improve the contrast, pattern fidelity, and ease-of-handling of the …

Adaptive Apparel For People With Disabilities: A Systematic Literature Review And Future Research Agenda, Md. Rafiqul Islam Rana M.S.,Ph.D, Kerri Mcbee-Black, Ishtehar Sharif Swazan

Faculty Publications

This systematic literature review examines research on adaptive apparel for people with disabilities (PWDs), an underrepresented consumer group. Using the scientific procedures and rationales for systematic literature reviews (SPAR-4-SLR) protocol and the theories, contexts, characteristics, and methods (TCCM) framework, 51 articles from three academic databases were analyzed based on specific keywords and inclusion/exclusion criteria. The review highlighted advancements addressing the needs of PWD consumers, such as innovative designs, user-centered methodologies, and inclusive marketing. However, there remain gaps in areas like disability types, methodologies, cultural factors, and societal barriers. The implications of this research underscore the urgent need for the apparel …

Using Tensile And Compressive Stress Superposition During Incremental Forming To Manipulate Martensitic Transformation In Ss304, E M. Mamros, F Maab, A E. Tekkaya, Brad L. Kinsey, J Ha

Faculty Publications

Single point incremental forming (SPIF) is a flexible manufacturing process that has applications in industries ranging from biomedical to automotive. In addition to rapid prototyping, which requires easy adaptations in geometry or material for design changes, control of the final part properties is desired. One strategy that can be implemented is stress superposition, which is the application of additional stresses during an existing manufacturing process. Tensile and compressive stresses applied during SPIF showed significant effects on the resulting microstructure in stainless steel 304 truncated square pyramids. Specifically, the amount of martensitic transformation was increased through stress superposed incremental forming. Finite …

The Second-Order Features Adjoint Sensitivity Analysis Methodology For Response-Coupled Forward/Adjoint Linear Systems (2nd-Fasam-L): Mathematical Framework And Illustrative Application To An Energy System, Dan Gabriel Cacuci

Faculty Publications

The Second-Order Features Adjoint Sensitivity Analysis Methodology for Response-Coupled Forward/Adjoint Linear Systems (abbreviated as “2nd-FASAM-L”), presented in this work, enables the most efficient computation of exactly obtained mathematical expressions of first- and second-order sensitivities of a generic system response with respect to the functions (“features”) of model parameters. Subsequently, the first- and second-order sensitivities with respect to the model’s uncertain parameters, boundaries, and internal interfaces are obtained analytically and exactly, without needing large-scale computations. Within the 2nd-FASAM-L methodology, the number of large-scale computations is proportional to the number of model features (defined as functions of model parameters), as opposed to …

Peritextual Elements In Chinese Nonfiction Picturebooks, Sunah Chung, Jongsun Wee, Sohyun Meacham

Faculty Publications

The present work is a comparison of the peritext typology found across various nonfiction picturebooks focusing on Chinese people, including Chinese Americans. Nineteen nonfiction books were chosen following selection methods described in previous literature. Books were individually analysed to see which of five categories they fit under, and insider/outsider status for each author and illustrator was recorded as well. All five types were found in the surveyed Chinese nonfiction picturebooks; however, none of the books encouraged readers to take action for social change. We also found slight variation in peritext usage between the insiders and outsiders for authors and illustrators. …

Deterministic Global 3d Fractal Cloud Model For Synthetic Scene Generation, Aaron M. Schinder, Shannon R. Young, Bryan J. Steward, Michael L. Dexter, Andrew Kondrath, Stephen Hinton, Ricardo Davila

Faculty Publications

This paper describes the creation of a fast, deterministic, 3D fractal cloud renderer for the AFIT Sensor and Scene Emulation Tool (ASSET). The renderer generates 3D clouds by ray marching through a volume and sampling the level-set of a fractal function. The fractal function is distorted by a displacement map, which is generated using horizontal wind data from a Global Forecast System (GFS) weather file. The vertical windspeed and relative humidity are used to mask the creation of clouds to match realistic large-scale weather patterns over the Earth. Small-scale detail is provided by the fractal functions which are tuned to …

Employing Digital Pcr For Enhanced Detection Of Perinatal Toxoplasma Gondii Infection: A Cross-Sectional Surveillance And Maternalinfant Outcomes Study In El Salvador, Mary K. Lynn, Marvin Stanley Rodriguez Aquino, Pamela Michelle Cornejo Rivas, Xiomara Miranda, David F. Torres-Romero, Hanson Cowan, Madeleine M. Meyer, Willber D. Castro-Godoy, Mufaro Kanyangarara Ph.D., Stella C.W. Self Ph.D., Ms, Berry A. Campbell, Melissa S. Nolan Ph.D., Mph

Faculty Publications

Toxoplasma gondii is a parasitic infection that can be transmitted in utero, resulting in fetal chorioretinitis and other long-term neurological outcomes. If diagnosed early, pregnancysafe chemotherapeutics can prevent vertical transmission. Unfortunately, diagnosis of acute, primary infection among pregnant women remains neglected, particularly in low-andmiddle-income countries. Clinically actionable diagnosis is complex due to the commonality of infection during childhood and early adulthood which spawn long-last antibody titers and historically unreliable direct molecular diagnostics. The current study employed a cross-sectional T. gondii perinatal surveillance study using digital PCR, a next generation molecular diagnostic platform, and a maternal-fetal outcomes survey to ascertain the …

Examining Mechanical Property Differences In Concrete With Natural And Synthetic Fiber Additives, Walid Fouad Edris, Sammy Elbialy, Ayman El-Zohairy, Ashraf Mohamed Soliman

Faculty Publications

The rapid growth of Natural Fiber Laminate (NFL) innovation is a direct response to environmental challenges, positioning these materials as superior alternatives to synthetic fiber composites. This paper delved into the outcomes of an extensive experimental study investigating the influence of sisal fiber (SLF), banana fiber (BF), and glass fiber (GF) on the mechanical and microstructural characteristics of concrete. The water absorption curves were established for sisal fiber concrete (SLFC), banana fiber concrete (BFC), and glass fiber concrete (GFC). Furthermore, Scanning Electron Microscope (SEM) observations were conducted to perform microanalysis and failure analysis of the tested specimens. The results revealed …

Can Listeners Differentiate Varieties Using Prosodic Information? Lect Identification In A Persona-Matching Task, Nicole Holliday, Rachel Steindel Burdin, Paul Reed

Faculty Publications

Sociolinguists and lay people have long been interested in the mechanisms by which dialect and speaker identification occur. The current study aims to test whether realizational differences found in production studies are salient factors in identification of different lects, as well as to examine differences between groups in identification. In this study, listeners were instructed to match clips containing H* and L+H* pitch accents with specific personae who represented speakers of five lects of interest (African American English, Jewish English, Appalachian English, Southern English, and Midwestern English). Listeners from different groups (Appalachian, African American, Jewish, and those who were not …

Direct Precipitation Of Siderite In Ferruginous Environments, A Grengs, G Ledesma, Y Xiong, S Katsev, S W. Poulton, E D. Swanner, C Wittkop

Faculty Publications

Siderite (FeCO 3 ) is often assumed to precipitate from dissimilatory reduction of Fe-(oxyhydr)oxides, but geochemical and mineralogical analyses from ferruginous (anoxic, Fe-rich) Canyon Lake, USA, suggest Fe-carbonate represents a direct early precipitate unrelated to substantial oxide burial.X-ray absorption near edge structure (XANES) spectroscopy of sediment trap materials and an anoxic sediment core indicated a mixture of Fe(II) and Fe(III) in water column particulates and ferruginous surface sediments, while all Mn phases were reduced.About 60 cm below the sediment-water interface, Fe-Mn carbonates were detected by X-ray diffraction and XANES, while Fe extended X-ray absorption fine structure (EXAFS) spectra were best …

Can Listeners Differentiate Varieties Using Prosodic Information? Lect Identification In A Persona-Matching Task, Nicole Holliday, Rachel Steindel Burdin, Paul Reed

Faculty Publications

Sociolinguists and lay people have long been interested in the mechanisms by which dialect and speaker identification occur. The current study aims to test whether realizational differences found in production studies are salient factors in identification of different lects, as well as to examine differences between groups in identification. In this study, listeners were instructed to match clips containing H* and L+H* pitch accents with specific personae who represented speakers of five lects of interest (African American English, Jewish English, Appalachian English, Southern English, and Midwestern English). Listeners from different groups (Appalachian, African American, Jewish, and those who were not …

Investigating Turbulence Distribution In The Lower Atmosphere Using Time-Lapse Imagery From A Camera Bank, Benjamin C. Wilson, Santasri R. Bose-Pillai, Jack E. Mccrae, Steven T. Fiorino, Robert P. Freeman, Laura R. Slabaugh

Faculty Publications

The atmosphere’s surface layer (first 50–100 m above the ground) is extremely dynamic and is influenced by surface radiative properties, roughness, and atmospheric stability. Understanding the distribution of turbulence in the surface layer is critical to many applications, such as directed energy and free space optical communications. Several measurement campaigns in the past have relied on weather balloons or sonic detection and ranging (SODAR) to measure turbulence up to the atmospheric boundary layer. However, these campaigns had limited measurements near the surface. We have developed a time-lapse imaging technique to profile atmospheric turbulence from turbulence-induced differential motion or tilts between …

Direct Precipitation Of Siderite In Ferruginous Environments, A Grengs, G Ledesma, Y Xiong, S Katsev, S W. Poulton, E D. Swanner, C Wittkop

Faculty Publications

Siderite (FeCO 3 ) is often assumed to precipitate from dissimilatory reduction of Fe-(oxyhydr)oxides, but geochemical and mineralogical analyses from ferruginous (anoxic, Fe-rich) Canyon Lake, USA, suggest Fe-carbonate represents a direct early precipitate unrelated to substantial oxide burial.X-ray absorption near edge structure (XANES) spectroscopy of sediment trap materials and an anoxic sediment core indicated a mixture of Fe(II) and Fe(III) in water column particulates and ferruginous surface sediments, while all Mn phases were reduced.About 60 cm below the sediment-water interface, Fe-Mn carbonates were detected by X-ray diffraction and XANES, while Fe extended X-ray absorption fine structure (EXAFS) spectra were best …

Maternal Care Utilization And Provision During The Covid-19 Pandemic: Voices From Minoritized Pregnant And Postpartum Women And Maternal Care Providers In Deep South, Ran Zhang, Tiffany Byrd, Shan Qiao Ph.D., Myriam E. Torres Phd, Msph, Xiaoming Li Ph.D., Jihong Liu Sc.D.

Faculty Publications

Background

The COVID-19 pandemic has significantly affected maternal care services especially for minoritized individuals, creating challenges for both service users (i.e., African American and Hispanic pregnant/postpartum women) and maternal care providers (MCPs). Guided by a socioecological framework, this study aims to investigate the experiences of African American and Hispanic pregnant and postpartum women, as well as MCPs, in accessing and providing maternal care services during the COVID-19 pandemic in the Deep South.

Methods

We conducted semi-structured interviews with 19 African American women, 20 Hispanic women, and 9 MCPs between January and August 2022. Participants were recruited from Obstetrics and Gynecology …

Laser-Induced Breakdown Spectroscopy Analysis Of Tourmaline: Protocols, Procedures, And Predicaments, Nancy J. Mcmillan, Barbara L. Dutrow

Faculty Publications

Laser-induced breakdown spectroscopy (LIBS) is an appropriate choice of analytical tool for analysis of complex minerals because it is rapid, requires little sample preparation, and acquires major and trace element compositional information on all naturally occurring elements at concentrations above their intrinsic levels of detection for the specific analyte material. Tourmaline, a complex borosilicate mineral supergroup, was chosen as a test mineral due to the complexity of its major and minor element composition. Four analytical issues were investigated during project development: (1) the spacing between analytical laser shots to avoid analysis of the recast from previous laser ablations, (2) the …

Exploring The Impact Of The Aging Effect On Inferred Properties Of Solar Coronal Mass Ejections, F Regnault, Nada Al-Haddad, Noé Lugaz, Charles J. Farrugia, Bin Zhuang, Wenyuan Yu, A Strugarek

Faculty Publications

In situ measurements of coronal mass ejections (CMEs) when they pass over an interplanetary probe are one of the main ways we directly measure their properties. However, such in situ profiles are subject to several observational constraints that are still poorly understood. This work aims at quantifying one of them, namely, the aging effect, using a CME simulated with a three-dimensional magnetohydrodynamical code. The synthetic in situ profile and the instantaneous profile of the magnetic field strength differ more from each other when taken close to the Sun than far from it. Moreover, out of three properties we compute in …

Exploring The Impact Of The Aging Effect On Inferred Properties Of Solar Coronal Mass Ejections, F Regnault, Nada Al-Haddad, Noé Lugaz, Charles J. Farrugia, Bin Zhuang, Wenyuan Yu, A Strugarek

Faculty Publications

In situ measurements of coronal mass ejections (CMEs) when they pass over an interplanetary probe are one of the main ways we directly measure their properties. However, such in situ profiles are subject to several observational constraints that are still poorly understood. This work aims at quantifying one of them, namely, the aging effect, using a CME simulated with a three-dimensional magnetohydrodynamical code. The synthetic in situ profile and the instantaneous profile of the magnetic field strength differ more from each other when taken close to the Sun than far from it. Moreover, out of three properties we compute in …