Digital Commons Network^™

The Past, Present, And Future Of Equine Science, Sarah H. White-Springer, Jason E. Bruemmer, Robert J. Coleman

United States Department of Agriculture Wildlife Services: Staff Publications

A core group of 27 equine nutritionists and physiologists joined together in the late 1960s to formally address and enhance the direction of equine research, creating the Equine Nutrition and Physiology Soci- ety. In 2003, that growing society transformed into the Equine Science Society, which now serves as the preeminent, internationally recognized scientific equine organization. In recent years, it has been appre- ciated that equine science encompasses a wide range of focus areas, including exercise science, nutrition, genetics, reproductive physiology, teaching and extension, production and management, and mix of other specialties, qualified as biosciences. Additionally, trainees are highly valued in …

Switchable Anomalous Hall Effects In Polar-Stacked 2d Antiferromagnet Mnbi2Te4, Tengfei Cao, Ding-Fu Shao, Kai Huang, Gautam Gurung, Evgeny Y. Tsymbal

Department of Physics and Astronomy: Faculty Publications

Van der Waals (vdW) assembly allows controlling symmetry of two-dimensional (2D) materials that determines their physical properties. Especially interesting is the recently demonstrated breaking inversion symmetry by polar layer stacking to realize novel electronic, magnetic, and transport properties of 2D vdW materials switchable by induced electric polarization. Here, based on symmetry analyses and density-functional calculations, we explore the emergence of the anomalous Hall effect (AHE) in antiferromagnetic MnBi2Te4 films assembled by polar layer stacking. We demonstrate that breaking 𝑃̂ 𝑇̂ symmetry in an MnBi₂Te₄ bilayer makes this 2D material magnetoelectric and produces a spontaneous AHE switchable by …

Direct Observation Of The Magnetic Anisotropy Of An Fe (Ii) Spin Crossover Molecular Thin Film, Ashley S. Dale, Saeed Yazdani, Thilini K. Ekanayaka, Esha Mishra, Yuchen Hu, Peter A. Dowben, John W. Freeland, Jian Zhang, Ruihua Cheng

Department of Physics and Astronomy: Faculty Publications

Spin crossover molecules are a promising candidate for molecular spintronics that aim for ultrafast and low-power devices for data storage and magnetic and information sensing. The rapid spin state transition is best controlled by non-thermal methods including magnetic field. Unfortunately, the magnetic field normally required to switch the spin state is normally high (~30 T), which calls for better understanding of the fundamental mechanism. In this work, we provide clear evidence of magnetic anisotropy in the local orbital moment of a molecular thin film based on spin crossover complex [Fe(H₂B(pz)₂)₂(bipy)] (pz = pyrazol−1−yl, bipy …

Interface-Tuning Of Ferroelectricity And Quadruple-Well State In Cuinp2S6 Via Ferroelectric Oxide, Kun Wang, Du Li, Jia Wang, Yifei Hao, Hailey Anderson, Li Yang, Xia Hong

Department of Physics and Astronomy: Faculty Publications

Ferroelectric van der Waals CuInP₂S₆ possesses intriguing quadruple-well states and negative piezoelectricity. Its technological implementation has been impeded by the relatively low Curie temperature (bulk T_C ~42 °C) and the lack of precise domain control. Here we show that CuInP₂S₆ can be immune to the finite size effect and exhibits enhanced ferroelectricity, piezoelectricity, and polar alignment in the ultrathin limit when interfaced with ferroelectric oxide PbZr_0.2Ti_0.8O₃ films. Piezoresponse force microscopy studies reveal that the polar domains in thin CuInP₂S₆ fully conform to those of underlying …

Femtosecond Electronic And Hydrogen Structural Dynamics In Ammonia Imaged With Ultrafast Electron Diffraction, Elio G. Champenois, Nanna H. List, Matthew Ware, Mathew Britton, Philip H. Bucksbaum, Xinxin Cheng, Martin Centurion, James P. Cryan, Ruaridh Forbes, Ian Gabalski, Kareem Hegazy, Matthias C. Hoffmann, Andrew J. Howard, Fuhao Ji, Ming-Fu Lin, J. Pedro F. Nunes, Xiaozhe Shen, Jie Yang, Xijie Wang, Todd J. Martinez, Thomas J. A. Wolf

Department of Physics and Astronomy: Faculty Publications

Directly imaging structural dynamics involving hydrogen atoms by ultrafast diffraction methods is complicated by their low scattering cross sections. Here we demonstrate that megaelectronvolt ultrafast electron diffraction is sufficiently sensitive to follow hydrogen dynamics in isolated molecules. In a study of the photodissociation of gas phase ammonia, we simultaneously observe signatures of the nuclear and corresponding electronic structure changes resulting from the dissociation dynamics in the time-dependent diffraction. Both assignments are confirmed by ab initio simulations of the photochemical dynamics and the resulting diffraction observable. While the temporal resolution of the experiment is insufficient to resolve the dissociation in time, …

Echinococcus Species Infections Among Wild Canids In Pennsylvania, Usa, Kayla Garrett, Justin Brown, Ryan K. A. Grunert, Jonathan Hunte, Mark G. Ruder, Kyle Van Why, Michael J. Yabsley, Christopher A. Cleveland

United States Department of Agriculture Wildlife Services: Staff Publications

Echinococcus species are zoonotic tapeworms that can impact the health of wildlife, domestic animals, livestock, and humans. Two species of interest in North America are Echinococcus multilocularis and Echinococcus canadensis (Echinococcus granulosus sensu lato). The primary wildlife definitive hosts for E. multilocularis and E. canadensis are similar, including red foxes (Vulpes vulpes), gray foxes (Urocyon cinereoargenteus), coyotes (Canis latrans), and wolves (Canis lupus). These two Echinococcus spp. use different intermediate hosts, including small mammals for E. multilocularis and artiodactylids for E. canadensis. Although historically absent from …

Turkey Vulture Survival Is Reduced In Areas Of Greater Road Density, Adrián Naveda-Rodríguez, Keith L. Bildstein, David R. Barber, Jean-François Therrien, Michael L. Avery, Bryan M. Kluever, Scott A. Rush, Francisco J. Vilella

United States Department of Agriculture Wildlife Services: Staff Publications

The demography of, and factors that influence these metrics, are largely unknown for most vultures in the Americas. Survivorship of turkey vultures (Cathartes aura) may be influenced by landscape heterogeneity and human disturbance. We quantified the effects of landscape composition (Shannon’s diversity index) and configuration (contagion, edge density, and largest patch index), and human disturbance (road density) on the annual and seasonal survival probabilities of the three North American breeding populations (western, central, and eastern) of turkey vultures that spend the nonbreeding season in the southeastern portion of the Nearctic and the northern Neotropics during a 17-year period. …

Helminth And Protozoan Parasites Of Subterranean Rodents (Chordata, Mammalia, Rodentia) Of The World, Altangerel Tsogtsaikhan Dursahinhan, Daniel A. Kenkel, Scott Lyell Gardner

Scott L. Gardner Publications

Published studies and ten new unpublished records included herein reveal that approximately 174 species of endoparasites (helminths and protozoans) are known from 65 of 163 species of rodents that occupy the subterranean ecotope globally. Of those, 94 endoparasite species were originally described from these rodents. A total of 282 host-parasite associations are summarized from four major zoogeographic regions including Ethiopian, Palearctic/Oriental, Nearctic, and Neotropical. Thirty-four parasite records from the literature have been identified to only the level of the genus. In this summary, ten new records have been added, and the most current taxonomic status of each parasite species is …

Filling The Gap In Distribution Ranges And Conservation Status In Ctenomys (Rodentia: Ctenomyidae), Diego A. Caraballo, Sabrina Laura Lopez, Sebastian Botero-Cañola, Scott Lyell Gardner

Scott L. Gardner Publications

South American subterranean rodents of the genus Ctenomys (Rodentia, Ctenomyidae, tuco-tuco) are one of the most diverse genera among mammals. Recently described species, new taxonomic revisions, and new distribution range delimitation made the revision of distribution areas and conservation status of these mammals mandatory. Implementing the first part of the DAMA protocol (document, assess, monitor, act), here we compile updated sets of species distribution range maps and use these and the number of collection localities to assess the conservation status of ctenomyids. We integrate potential for conservation in protected areas, and levels of habitat transformation to revise previous conservation status …

Tapping Into Natural History Collections To Assess Latitudinal Gradients Of Parasite Diversity, Sebastian Botero-Cañola, Scott Lyell Gardner

Scott L. Gardner Publications

Parasites are key components of the biosphere not only due to their huge diversity, but also because they exert important influences on ecological processes. Nevertheless, we lack an understanding of the biogeographical patterns of parasite diversity. Here, we tap into the potential of biodiversity collections for understanding parasite biogeography. We assess species richness of supracommunities of helminth parasites infecting mammal assemblages in the Nearctic, and describe its relation to latitude, climate, host diversity, and land area. We compiled data from parasitology collections and assessed parasite diversity in Nearctic ecoregions for the entire parasite supracommunity of mammals in each ecoregion, as …

Modeling Perennial Bioenergy Crops In The E3sm Land Model (Elmv2), Eva Sinha, Katherine V. Calvin, Ben Bond-Lamberty, Beth A. Drewniak, Daniel M. Ricciuto, Khachik Sargsyan, Yanyan Cheng, Carl Bernacchi, Caitlin E. Moore

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Perennial bioenergy crops are increasingly important for the production of ethanol and other renewable fuels, and as part of an agricultural system that alters the climate through its impact on biogeophysical and biogeochemical properties of the terrestrial ecosystem. Few Earth System Models (ESMs) represent such crops, however. In this study, we expand the Energy Exascale Earth System Land Model to include perennial bioenergy crops with a high potential for mitigating climate change. We focus on high-productivity miscanthus and switchgrass, estimating various parameters associated with their different growth stages and performing a global sensitivity analysis to identify and optimize these parameters. …

Honors In Practice, Volume 19, 2023

Honors in Practice Online Archive

In This Issue:

Dedication to Kathleen B. King

Editor’s Introduction • Ada Long

2022 Presidential Address: The NCHC’s Inclusive Mission • Christina M. McIntyre

NCHC Article Reprinted from Inside Higher Ed: Can Honors Education Reach More Students? • Richard Badenhausen and James Buss

Essays:

Promoting Holistic Wellness in Honors Students through Peer Coaching • Leah Horton, Aaron Conrad, and Patricia J. Smith

Empowering Student Leadership amid Transition: Student-Centered Revision of First-Year Honors Peer Mentoring • Jacob R. Schlange and Tamy Burnett

Relational Peer Review Practices in the Honors Research Methods Classroom: Toward a Scaffolded and Multidisciplinary Model • Holly Riley …

A Network Perspective On Multi-Scale Water Governance In The Lake Champlain Basin, Vermont, Patrick Bitterman, Christopher Koliba, Anna Singer

School of Global Integrative Studies: Faculty Publications

The prevalence and persistence of harmful cyanobacterial blooms demonstrate the importance of governance systems that effectively engage with many actors to address nonpoint pollution from a variety of sources across multiple spatial domains. Although the importance of social-ecological alignment on effective governance is increasingly clear, governance systems often evolve incrementally and in a manner that fails to adequately align resources and governance networks with biophysical structures, processes, and legacies. Through a survey of water governance actors in the Lake Champlain Basin, we map the structure of the water governance network and identify the key information brokers, flows of resources, and …

Multiplatform Untargeted Metabolomics, Micah J. Jeppesen, Robert Powers

Robert Powers Publications

Metabolomics samples like human urine or serum contain upwards of a few thousand metabolites, but individual analytical techniques can only characterize a few hundred metabolites at best. The uncertainty in metabolite identification commonly encountered in untargeted metabolomics adds to this low coverage problem. A multiplatform (multiple analytical techniques) approach can improve upon the number of metabolites reliably detected and correctly assigned. This can be further improved by applying synergistic sample preparation along with the use of combinatorial or sequential non-destructive and destructive techniques. Similarly, peak detection and metabolite identification strategies that employ multiple probabilistic approaches have led to better annotation …

Histidine Enhances The Anticancer Effect Of Gemcitabine Against Pancreatic Cancer Via Disruption Of Amino Acid Homeostasis And Oxidant—Antioxidant Balance, Narendra Kumar, Satyanarayana Rachagani, Gopalakrishnan Natarajan, Alexandra Crook, Thiyagarajan Gopal, Vinothkumar Rajamanickam, Jyoti B. Kaushal, Sirpu N. Nagabhishek, Robert Powers, Surinder K. Batra, Viswanathan Saraswathi

Robert Powers Publications

Simple Summary: Amino acid metabolism is aberrantly altered in pancreatic cancer (PC). Evidence suggests that circulating histidine (His) levels are low in PC. However, the role of His in modulating the progression of PC remains unknown. We determined the role of His in altering the therapeutic effectiveness of gemcitabine (Gem) against PC. We provide evidence that the expression of histidine ammonia lyase (HAL), an enzyme involved in His catabolism, is greatly increased in mouse and human pancreatic tumors. We show that combining His with Gem led to enhanced cytotoxic effects against aggressive PC cell lines. Our metabolomics analysis revealed that …

Entomology Outreach Presentations To Four Audiences, Michael Goldman

Department of Entomology: Distance Master of Science Projects

I proposed that my master’s Project would be outreach on Entomology at four levels: School aged children, laymen, non-entomologists in a technical field, and entomologists. The idea here is basically how to talk about entomology to varying levels of expertise, from first graders to experts in both entomology and occupational health and safety. Presentations were given to audiences at each of the four levels. The specific topics varied for each audience. The determination was made by the inviting audience in the cases of school aged children and adult laymen and by me in the cases of Occupational Safety and Health …

Student Experiences Reporting Sexual And Gender-Based Misconduct To The Title Ix Office At A Public State University, Aliya R. Webermann, Kathryn Holland, Christopher M. Murphy

Department of Psychology: Faculty Publications

Twenty-five survivors completed anonymous surveys about reporting sexual and gender-based misconduct to their public university’s Title IX office, including case characteristics, perceptions of the reporting and response process (e.g., helpfulness, respect), and experiences of institutional betrayal and support. Measures and open-ended responses described varied misconduct incidents, reporting behaviors, case outcomes, process issues, and negative process consequences. Additionally, process perceptions correlated with institutional betrayal and support. Findings illuminate how survivors’ Title IX process perceptions relate to experiencing harm or support from larger institutions, and offer insights into developing a Title IX process which maintains student rights and dignity regardless of outcome.

The Persistence And Stabilization Of Auxiliary Genes In The Human Skin Virome, Ema H. Graham, Wesley A. Tom, Alison C. Neujahr, Michael Adamowicz, Jennifer Clarke, Joshua R. Herr, Samodha C. Fernando

Nebraska Center for Virology: Faculty Publications

Background The human skin contains a diverse microbiome that provides protective functions against environmental pathogens. Studies have demonstrated that bacteriophages modulate bacterial community composition and facilitate the transfer of host-specific genes, potentially influencing host cellular functions. However, little is known about the human skin virome and its role in human health. Especially, how viral-host relationships influence skin microbiome structure and function is poorly understood.

Results Population dynamics and genetic diversity of bacteriophage communities in viral metagenomic data collected from three anatomical skin locations from 60 subjects at five different time points revealed that cutaneous bacteriophage populations are mainly composed of …

Better To Be Loved By Some? Firm Flaunting As An Impression Management Strategy, A. Erin Bass, Michael D. Pfarrer, Ivana Milosevic, Varkey K. Titus Jr.

Department of Management: Faculty Publications

Firms can use a range of proactive impression management behaviors to reduce the impact of a negative event on firmoutcomes. When a negative event is unpredictable, we theorize that firms can engage in ostentatious behaviors that display the firm’s affluence and robust resource base. We term these behaviors “flaunting,” and we present a twopart model that investigates how flaunting can reduce the impact of an unpredictable negative event on firm outcomes and why it is effective at doing so. In part one, we theorize how flaunting can generate net positive stakeholder group evaluations by enhancing distinctiveness among stakeholder groups. In …

Typology Of Tweets And User Engagement Generated By U.S. Companies Involved In Developing Covid-19 Vaccines, Priyanka Khandelwal, Leslie Ramos Salazar, Soni Khandelwal

Department of Marketing: Faculty Publications

This study analyzes 295 tweets by four U.S. companies engaged in discovering a vaccine for COVID-19. Tweets were analyzed to understand how their Twitter feeds balanced corporate and product branding (vaccine, medicines, etc.) and disseminated scientific information relating to COVID-19. The results suggest that these companies were actively embedding technical information about COVID-19 in their corporate and product branding. Tweets providing technical and scientific information about the progress made toward developing a COVID-19 vaccine garnered high levels of user engagement from their target audience. Findings from this study indicate the growing importance of technical communication in corporate settings during a …

Situated Data: Feminist Epistemology And Data Curation, Scout Calvert

University of Nebraska-Lincoln Libraries: Faculty Publications

In the last decade or more, academic libraries have taken up the challenge of providing data curation and research data support, bringing expertise in metadata and digital preservation to key aspects of the research data life cycle. This activity has hastened since 2013, when the White House Office of Science and Technology Policy (OSTP) issued a memo directing federal funding agencies to require data, among other products of research, to be shared as a condition of funding.1 The OSTP memo did not come out of the blue, but recognized changes in data practice in some disciplines as the costs of …

Comparison Of Library Publishing Workflows By Open Access Model As Practiced In The University Of Nebraska–Lincoln Libraries, Sue Ann Gardner

University of Nebraska-Lincoln Libraries: Faculty Publications

Workflows for green and diamond open access (OA) models in a library publishing program may be very similar to one another (green = republishing; diamond = original publishing). As administered in the University of Nebraska–Lincoln Libraries, the details of each of these workflows are outlined and compared with each other and compared also with the interaction with authors that stems from gold OA (= outsourcing publishing). Vignettes related to each type of publishing model are included to demonstrate the types of conversations we tend to have with authors about the various OA types and give an indication of how much …

Creating Informed Learners In The Classroom Facilitator Handbook, Clarence Maybee, Michael Flierl, Rachel Fundator, Catherine Fraser Riehle, Maribeth Slebodnik, Amity Saha

University of Nebraska-Lincoln Libraries: Faculty Publications

Higher education has a responsibility to prepare graduates to traverse the challenges of today’s information environment. While many institutions offer information literacy programming, including courses, they typically do not address learning to use information that occurs as part of disciplinary learning and enculturation. Creating Informed Learners in the Classroom (CILC) was an educational development program implemented at three research universities (Purdue University, University of Arizona, and University of Nebraska, Lincoln) between September 1, 2019 to August 31, 2024. Originally titled Academic Librarian Curriculum Developers: Building Capacity to Integrate Information Literacy across the University, the project was partially funded by …

Higher Concentrations Of Microplastics In Runoff From Biosolid-Amended Croplands Than Manure-Amended Croplands, Nasrin Naderi Beni, Shahab Karimifard, John Gilley, Tiffany Messer, Amy Schmidt, Shannon L. Bartelt-Hunt

Department of Civil and Environmental Engineering: Faculty Publications

Land-applied municipal biosolids, produced from municipal wastewater treatment sludge, contributes to microplastics contamination in agroecosystems. The impacts of biosolids on microplastic concentrations in agricultural soil have been previously investigated, however, the potential for microplastics transport from biosolid-amended croplands has not been previously quantified. In this study, manure and biosolids were applied to field plots, runoff was collected following natural precipitation events and the potential of bacterial biofilm to grow on different microplastic morphologies was investigated. Higher concentrations of microplastics were detected in runoff from plots with land-applied biosolid in comparison with manure-amended and control plots. Fibers and fragments were the …

Difficult Conversations Concerning Identity And Difference: Diverse Approaches And Perspectives, Jordan Soliz, Srividya Ramasubramanian

Department of Communication Studies: Faculty Publications

This essay is an introduction to the special issue on “Difficult Conversations Concerning Identity and Difference.” The essay begins with our argument that inquiries into difficult conversations are important as these interactions are key to addressing social inequities, creating and/or maintaining community and relational solidarity, amplifying voices of marginalized populations and/or diverse experiences, and enacting social change. Following this, we introduce the articles in the special issue highlighting the theoretical frameworks and methodological pluralism across the various relational and social contexts represented in the research (e.g., health care, higher education, community organizations, personal relationships). To complement the implications discussed by …

Advocating For A Patient‐ And Family Centered Care Approach To Management Of Short Bowel Syndrome, Vanessa J. Kumpf, Marie L. Neumann, Swapna R. Kakani

Department of Communication Studies: Faculty Publications

Patient‐ and family centered care (PFCC) is a model of providing healthcare that incorporates the preferences, needs, and values of the patient and their family and is built on a solid partnership between the healthcare team and patient/family. This partnership is critical in short bowel syndrome (SBS) management since the condition is rare, chronic, involves a heterogenous population, and calls for a personalized approach to care. Institutions can facilitate the practice of PFCC by supporting a teamwork approach to care, which, in the case of SBS, ideally involves a comprehensive intestinal rehabilitation program consisting of qualified healthcare practitioners who are …

Dynamic Field Programmable Logic-Driven Soft Exosuit, Frances Cleary, Witawas Srisa-An, David C. Henshall, Sasitharan Balasubramaniam

School of Computing: Faculty Publications

The next generation of etextiles foresees an era of smart wearable garments where embedded seamless intelligence provides the ability to sense, process and perform. Core to this vision is embedded textile functionality enabling dynamic configuration. In this paper we detail a methodology, design and implementation of a dynamic field programmable logic-driven fabric soft exosuit. Dynamic field programmability allows the soft exosuit to alter its functionality and adapt to specific exercise programs depending on the wearers need. The dynamic field programmability is enabled through motion based control arm movements of the soft exosuit triggering momentary sensors embedded in the fabric exosuit …

A Light-Weight Technique To Detect Gps Spoofing Using Attenuated Signal Envelopes, Xiao Wei, Muhammad Naveed Aman, Biplab Sikdar

School of Computing: Faculty Publications

Global Positioning System (GPS) spoofing attacks have attracted more attention as one of the most effective GPS attacks. Since the signals from an authentic satellite and the spoofer undergo different attenuation, the captured envelope of fake GPS signals exhibits distinctive transmission characteristics due to short transmission paths. This can be utilized for GPS spoofing detection. The existing technique for GPS spoofing are either computationally too expensive, require specialize hardware/ software updates, or are not accurate enough. To solve these issues, we propose a light-weight GPS spoofing detection method based on a dynamic threshold and captured signal envelope. We validate the …

Co-Existence With Ieee 802.11 Networks In The Ism Band Without Channel Estimation, Muhammad Naveed Aman, Muhammad Ishfaq, Biplab Sikdar

School of Computing: Faculty Publications

Any new deployment of networks in the industrial, scientific, and medical (ISM) band, even though it is license-free, has to co-exist with IEEE 802.11 networks. IoT devices are typically deployed in the ISM band, creating a spectrum bottleneck for competing networks. This paper investigates the issue of co-existence of wireless networks with WiFi networks. In our scenario, we consider WiFi as the “primary” or higher priority network co-existing with multiple “secondary” networks that may be used for low priority devices, with both networks operating in the ISM band. Towards this end, we first develop an analytical model for a metric …

Sexuality Training In Counseling Psychology: A Mixed-Methods Study Of Student Perspectives, Dena Abbott, Jacob E. Vargas, Hali J. Santiago

Department of Educational Psychology: Faculty Publications

Counseling psychologists are a cogent fit to lead the movement toward a sex-positive professional psychology (Burnes et al., 2017a). Though centralizing training in human sexuality (HS; Mollen & Abbott, 2021) and sexual and reproductive health (Grzanka & Frantell, 2017) is congruent with counseling psychologists’ values, training programs rarely require or integrate comprehensive sexuality training for their students (Mollen et al., 2020). We employed a critical mixed-methods design in the interest of centering the missing voices of doctoral-level graduate students in counseling psychology in the discussion of the importance of human sexuality competence for counseling psychologists. Using focus groups to ascertain …