Digital Commons Network^™

Facilitating Transformative Innovations In Sustainability Education [Version 2], Martin Melin, Geir Lieblein, Tor Arvid Breland, Charles A. Francis

Department of Agronomy and Horticulture: Faculty Publications

Educational strategies globally are changing from an authoritative, top-down model to one focused on greater student and stakeholder participation in planning and implementation of research and educational activities. In addition to emphasis on student-centered education, strategies currently evolve to encompass learning organizations and multistakeholder learning networks. These are essential to address the complexity and scope of tomorrow’s challenges, involving issues that could be called ’wicked problems’ not easily addressed by single disciplines nor resulting in solutions that please all the players. In this study we describe how a transformative innovation – the NEXTFOOD educational approach – may contribute substantially to …

Do Ceo Gratification Preferences Influence Accounting Choices Near Retirement?, Nicholas Wilson

College of Business: Dissertations, Theses, and Student Research

CEOs near retirement are less motivated to act in shareholders' best interests than those planning to remain indefinitely; this is the horizon problem. Financial reporting that personifies the horizon problem includes an abrupt reduction in discretionary spending and an increase in current accounting earnings; this abrupt change in reporting is potentially detrimental to long-term gains. Gratification preference, defined by observable tendencies, is a personal characteristic reflecting one's prior life experiences and environments. This study offers an archival measure of these gratification preferences and examines whether these preferences mitigate or exacerbate the CEO horizon problem. The results suggest that discretionary accounting …

Functional Annotation Of The Animal Genomes: An Integrated Annotation Resource For The Horse, Sichong Peng, Anna R. Dahlgren, Callum G. Donnelly, Erin N. Hales, Jessica Lynn Petersen, Rebecca R. Bellone, Ted Kalbfleisch, Carrie J. Finno

Department of Animal Science: Faculty Publications

The genomic sequence of the horse has been available since 2009, providing critical resources for discovering important genomic variants regarding both animal health and population structures. However, to fully understand the functional implications of these variants, detailed annotation of the horse genome is required. Due to the limited availability of functional data for the equine genome, as well as the technical limitations of short-read RNAseq, existing annotation of the equine genome contains limited information about important aspects of gene regulation, such as alternate isoforms and regulatory elements, which are either not transcribed or transcribed at a very low level. To …

Oo-Mah-Ha Ta-Wa-Tha (Omaha City), Fannie Reed Giffen, Susette La Flesche Tibbles, Judi M. Gaiashkibos

Zea E-Books Collection

“This little book tells many important tribal stories for today and for future generations. These historic vignettes of the Omaha Nation and its leaders are shared so personally by author Fannie Reed Giffen and her col­laborators, Susette and Susan La Flesche. It has been a treasure of mine for 25 years and I hope it becomes one of yours.

The re-publication of the original comes on the 125-year anniversary of the 1898 Omaha Trans-Mississippi Expo­sition and Indian Congress. Its arrival is timely as many of its stories and people are vital to our nation’s history. A sculpture of Omaha Chief …

Proceedings Of The 50th Annual Meeting, Southern Soybean Disease Workers (March 1-2, 2023, Pensacola Beach, Florida), Kiersten A. Wise, Ian Small, Tessie Wilkerson, Danise Beadle, Trey Price, Tom W. Allen

Southern Soybean Disease Workers: Conference Proceedings

Southern United States Soybean Disease Loss Estimates for 2022. TW Allen, K Bissonnette, CA, Bradley, TR Faske, Z Grabau, T Isakeit, RC Kemerait, A Koehler, D Langston, J Lofton, JD Mueller, GB Padgett, PP Price, EJ Sikora, IM Small, R Vann, and H Young

Reflecting and Looking Forward: Perspectives from “Legends” and “Fresh Faces” of the SSDW (Moderators: Kiersten Wise and Ian Small)

The Implementation of a National Response to a New Soybean Pathogen, Phakopsora pachyrhizi, in North America. J Marois

Fungicide Resistance in Cercospora sojina: How Did We Get Here and What’s Next? CA Bradley

Exploring Mechanisms …

Fragments Of The Dark: Essays On Heritage, Anxiety, And Spirit, Nicholas Diaz

Department of English: Dissertations, Theses, and Student Research

“I am the war my family forgot to mention.” With these words from my essay, “My Parents Never Taught Me About My Ancestors,” I stake my position in the struggle for happiness. In a series of five experimental essays, I aim to reflect upon my assimilated white, working-class upbringing in the US Midwest and the emptiness with which it has left me. Deploying fragmentary essay forms, elements of memoir, question-and-answer, quotation, prayer, and other devices, I hope to pose destabilizing questions about our understandings of whiteness, masculinity, ancestry, and faith. Questions which, I hope, can help us (particularly those of …

Aiding In The Creation Of A Track And Field Recruiting Dataset, Gavin Struve

Honors Program: Senior Projects (Public)

While recruiting rankings are an area of coverage unto themselves for football and men’s basketball, there is a relative dearth of recruiting media available for other sports. That includes track and field, despite boasting the most participation of any high school sport, according to the National Federation of State High School Associations.

For my thesis, I aided in the development of a full-scale track and field recruiting dataset, the only known one currently in operation, hosted by The Stride Report — the preeminent NCAA distance running site. This platform will provide my work with the largest scope and viewership possible. …

All Bark And No Byte: A Case Study On Nuclear Weapons' Role In Cyber Deterrence, Phuc Nguyen

Honors Program: Senior Projects (Public)

In what some scholars consider a marked departure from its traditional policy, the U.S.' 2018 Nuclear Deterrence Posture Review declared that the U.S. would consider the use of nuclear weapons in response to "significant, non-nuclear strategic attacks." However, despite real-world examples of the type of significant cyberattacks on U.S., allied, or partner civilian population or infrastructure alluded to in the Review, the factors that might trigger multidomain escalation remain underexplored, which creates a credibility gap in the U.S.' deterrence policy. This paper explores these factors by providing a case study of the North Korean WannaCry and Russian NotPetya cyberattacks and …

Prairie Dogs, Gary Witmer, Jon Grant, Kendra Cross

Wildlife Damage Management Technical Series

Prairie dogs (Cynomys spp.) occur throughout the prairie states of middle North America from Mexico northward into Canada. They occupy a variety of habitats from prairies to high mountain valleys and sage brush-dominated deserts. The most common species is the black-tailed prairie dog (Cynomys ludovicianus; Figure 1). Prairie dogs are considered a “keystone species.” They provide habitat for many other native, grassland species. Prairie dogs live in colonies or “towns” that can span hundreds to thousands of acres. Depending on the species, their presence is evident by their burrow system. Despite the many ecosystem benefits prairie dogs provide by modifying …

Performance Of High Early-Strength Materials Used In Concrete Bridge Repair, Zina Ebrahim, Fray F. Pozo-Lora, Zachary Benson, Mohammad Mastali, Marc Maguire, Jiong Hu

Nebraska Department of Transportation: Research Reports

High early-strength materials are widely used for rapid concrete patching projects to limit road closure time and traffic obstruction. This research investigated the field performance of multiple high early-strength materials used in maintenance projects across Nebraska. Data from high early-strength products included in the state’s approved product list were collected and compared to field performance. In addition, a survey was prepared and distributed to the surrounding states to understand standard practices related to appropriate specifications of these materials that can be later used to develop specifications for the utilization of high early strength materials in Nebraska based on experimental and …

Uhpc Decked I-Beam For Accelerated Bridge Construction, George Morcous, Maher K. Tadros

Nebraska Department of Transportation: Research Reports

Ultra-High-Performance Concrete (UHPC) is an excellent material for bridge construction due to its exceptional durability and superior mechanical properties. Several Departments of Transportations (DOTs), including NDOT, have limited the use of UHPC in bridge construction to joints and connections between bridge components due to the relatively high materials cost of commercially UHPC products. Recently, NDOT has sponsored a research project to develop a non-proprietary UHPC using local materials to reduce materials cost and ensure its availability to local contractors and precast producers. The project was completed successfully and an economical UHPC mix that satisfied all workability, durability, and strength requirements …

Two Qtls Govern The Resistance To Sclerotinia Minor In An Interspecific Peanut Ril Population, Melina H. Rosso, Francisco J. De Blas, Alicia N. Massa, Claudio Oddino, Damian F. Giordano, Jose G. Seijo, Renee S. Arias, Juan H. Soave, Sara J. Soave, Mario I. Buteler, Marina Bressano

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

Sclerotinia blight is a soilborne disease caused by Sclerotinia minor Jagger and can produce severe decrease in yield. Cultural management strategies and chemical treatment are not completely effective; therefore, growing peanut-resistant varieties is likely to be the most effective control method for this disease. Sclerotinia blight resistance has been identified in wild Arachis species and further transferred to peanut elite cultivars. To identify the genome regions conferring Sclerotinia blight resistance within a tetraploid genetic background, this study evaluated a population of recombinant inbred lines (RIL) with introgressed genes from three wild diploid species: A. cardenasii, A. correntina, and A. batizocoi. …

Association Of IsvSa3 With Multidrug Resistance In Salmonella Enterica Isolates From Cattle (Bos Taurus), Gentry L. Lewis, Robert J. Fenton, Etsuko Moriyama, John Dustin Loy, Rodney A. Moxley

School of Veterinary and Biomedical Sciences: Faculty Publications

Salmonella enterica is, globally, an important cause of human illness with beef being a significant attributable source. In the human patient, systemic Salmonella infection requires antibiotic therapy, and when strains are multidrug resistant (MDR), no effective treatment may be available. MDR in bacteria is often associated with the presence of mobile genetic elements (MGE) that mediate horizontal spread of antimicrobial resistance (AMR) genes. In this study, we sought to determine the potential relationship of MDR in bovine Salmonella isolates with MGE. The present study involved 111 bovine Salmonella isolates obtained collectively from specimens derived from healthy cattle or their environments …

Use Of Organic Acid Mixtures Containing 2-Hydroxy-4-(Methylthio) Butanoic Acid (Hmtba) To Mitigate Salmonella Enterica, Shiga Toxin-Producing Escherichia Coli (Stec) And Aspergillus Flavus In Pet Food Kibbles, Aiswariya Deliephan, Janak Dhakal, Bhadriraju Subramanyam, Charles G. Aldrich

Department of Food Science and Technology: Faculty Publications

Post-processing operations of extruded pet food kibbles involve coating the product with fats and flavorings. These processes increase the risk for cross-contamination with food-borne pathogens such as Salmonella and Shiga toxin-producing Escherichia coli (STEC), and mycotoxin-producing molds such as Aspergillus spp. after the thermal kill step. In this study, the antimicrobial effects of two types of organic acid mixtures containing 2-hydroxy-4-(methylthio) butanoic acid (HMTBa), Activate DA™ and Activate US WD-MAX™, against Salmonella enterica, STEC and Aspergillus flavus when used as a coating on pet food kibbles were evaluated. Using canola oil and dry dog digest as fat and flavor …

Generative Artificial Intelligence And Copyright Law, Christopher T. Zirpoli

Copyright, Fair Use, Scholarly Communication, etc.

Recent innovations in artificial intelligence (AI) are raising new questions about how copyright law principles such as authorship, infringement, and fair use will apply to content created or used by AI. So-called “generative AI” computer programs—such as Open AI’s DALL-E 2 and ChatGPT programs, Stability AI’s Stable Diffusion program, and Midjourney’s self-titled program—are able to generate new images, texts, and other content (or “outputs”) in response to a user’s textual prompts (or “inputs”). These generative AI programs are “trained” to generate such works partly by exposing them to large quantities of existing works such as writings, photos, paintings, and other …

Sphingolipid Long-Chain Base Signaling In Compatible And Non-Compatible Plant–Pathogen Interactions In Arabidopsis, Mariana Saucedo-García, Ariadna González-Solís, Priscila Rodríguez-Mejía, Guadalupe Lozano-Rosas, Teresa De Jesús Olivera-Flores, Laura Carmona-Salazar, A. Arturo Guevara-García, Edgar B. Cahoon, Marina Gavilanes-Ruíz

Center for Plant Science Innovation: Faculty Publications

The chemical diversity of sphingolipids in plants allows the assignment of specific roles to special molecular species. These roles include NaCl receptors for glycosylinositolphosphoceramides or second messengers for long-chain bases (LCBs), free or in their acylated forms. Such signaling function has been associated with plant immunity, with an apparent connection to mitogen-activated protein kinase 6 (MPK6) and reactive oxygen species (ROS). This work used in planta assays with mutants and fumonisin B1 (FB1) to generate varying levels of endogenous sphingolipids. This was complemented with in planta pathogenicity tests using virulent and avirulent Pseudomonas syringae strains. Our results indicate that the …

Dose And Route Of Administration Determine The Efficacy Of Prophylactic Immunotherapy For Peanut Allergy In A Brown Norway Rat Model, Tiffany Kirkaldy Spaanager Sztuk, Neil Marcus Rigby, Lasse Nørskov-Nielsen, Stef J. Koppelman, Ana Isabel Sancho, Niels-Peter Hell Knudsen, Justin Marsh, Philip Johnson, Shashank Gupta, Alan Robert Mackie, Jeppe Madura Larsen, Katrine Lindholm Bøgh

Department of Food Science and Technology: Faculty Publications

Introduction: Allergen-specific immunotherapy (IT) is emerging as a viable option for treatment of peanut allergy. Yet, prophylactic IT remains unexplored despite early introduction of peanut in infancy was shown to prevent allergy. There is a need to understand how allergens interact with the immune system depending on the route of administration, and how different dosages of allergen may protect from sensitisation and a clinical active allergy. Here we compared peanut allergen delivery via the oral, sublingual (SL), intragastric (IG) and subcutaneous (SC) routes for the prevention of peanut allergy in Brown Norway (BN) rats.

Methods: BN rats were …

Exhumed Fluvial Landforms Reveal Evolution Of Late Eocene– Pliocene Rivers On The Central And Northern Great Plains, Usa, Jesse T. Korus, Robert Matthew Joeckel

Department of Earth and Atmospheric Sciences: Faculty Publications

Cenozoic strata on the Great Plains are the products of a long- lived, continental sediment routing system, and yet strikingly little is known about these ancient rivers. This article details the discovery of ~3100 fluvial ridges—erosionally inverted alluvial- fan, channel- fill, channel- belt, and valley- fill deposits—extending from the Rocky Mountain front to the eastern margin of the Great Plains. The direct detection of these channel bodies reveals new insights into late Eocene– Pliocene drainage evolution. Late Eocene– Oligocene streams were morphologically diverse. Alluvial fans adjacent to the Rocky Mountain front changed eastward to parallel or downstream- divergent, fixed, single- …

Greenbug Feeding-Induced Resistance To Sugarcane Aphids In Sorghum, Heena Puri, Edith Ikuze, Jessica Ayala, Isabella Rodriguez, Rupesh Kariyat, Joe Louis, Sajjan Grover

Department of Entomology: Faculty Publications

Plants are attacked by multiple insect pest species and insect herbivory can alter plant defense mechanisms. The plant defense responses to a specific herbivore may also contribute to the herbivore growth/survival on plants. Feeding by one insect species can modulate the plant defenses, which can either facilitate or hamper the colonization of subsequent incoming insects. However, little is known about the effect of sequential herbivory on sorghum plants. In this study, we demonstrate that a specialist aphid, sugarcane aphid (SCA; Melanaphis sacchari) grows faster on sorghum than a generalist aphid species, greenbug (GB; Schizaphis graminum). We also determined …

Drought Stress Prediction And Propagation Using Time Series Modeling On Multimodal Plant Image Sequences, Sruti Das Choudhury, Sinjoy Saha, Ashok Samal, Anastasios Mazis, Tala Awada

School of Natural Resources: Faculty Publications

The paper introduces two novel algorithms for predicting and propagating drought stress in plants using image sequences captured by cameras in two modalities, i.e., visible light and hyperspectral. The first algorithm, VisStressPredict, computes a time series of holistic phenotypes, e.g., height, biomass, and size, by analyzing image sequences captured by a visible light camera at discrete time intervals and then adapts dynamic time warping (DTW), a technique for measuring similarity between temporal sequences for dynamic phenotypic analysis, to predict the onset of drought stress. The second algorithm, HyperStressPropagateNet, leverages a deep neural network for temporal stress propagation using hyperspectral imagery. …

The Uncertain Fate Of L.B. 753 Under Article Vii, Section 11 Of The Nebraska Constitution’S No-Aid Provision, Anthony B. Schutz

Nebraska Law Bulletin (Selected Issues)

The Nebraska Legislature is considering a bill–Legislative Bill 753 (L.B. 753)–that would provide a non-refundable, 5-year carry-over tax credit for donations to qualifying scholarship-providing organizations. To qualify, the scholarship organization must provide qualifying education scholarships. Those qualifying education scholarships must be used to pay tuition and fees at a qualifying school. Qualifying schools are “any nongovernmental, privately operated elementary or secondary school located in this state.” The state administers the issuance of the tax credits through a program that keeps the budgeted caps in place. The program starts with a $25 million cap that gradually expands to $100 million if …

Expression Of Malic Enzyme Reveals Subcellular Carbon Partitioning For Storage Reserve Production In Soybeans, Usda Agricultural Research Service, Donald Danforth Plant Science Center, Donald Danforth Plant Science Center, Thomas E. Clemente, Hanh T. Nguyen

Department of Agronomy and Horticulture: Faculty Publications

• Central metabolism produces amino and fatty acids for protein and lipids that establish seed value. Biosynthesis of storage reserves occurs in multiple organelles that exchange central intermediates including two essential metabolites, malate, and pyruvate that are linked by malic enzyme. Malic enzyme can be active in multiple subcellular compartments, partitioning carbon and reducing equivalents for anabolic and catabolic requirements. Prior studies based on isotopic labeling and steady-state metabolic flux analyses indicated malic enzyme provides carbon for fatty acid biosynthesis in plants, though genetic evidence confirming this role is lacking. We hypothesized that increasing malic enzyme flux would alter carbon partitioning …

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Economics Of Deficit Irrigation Utilizing Soil Moisture Probes In The Western Corn Belt, Emily O’Donnell, Lia Nogueira, Cory Walters, E Wesley F. Peterson, Suat Irmak

Department of Agricultural Economics: Faculty Publications

Effective irrigation management is critical for future food supplies and the prosperity of producers engaged in irrigation production. Through a deficit irrigation field experiment, we determine the financial impact on producers caused by changing irrigation costs, corn prices, extreme weather events, and restricting irrigation levels. Results suggest that the optimal economic strategy within our constrained optimization model is to fully irrigate, with the economic impact highly dependent on commodity prices, restriction level, and irrigation costs. The greatest economic losses caused by irrigation restrictions come from decreases in yield. Some simulations resulted in negative profits, indicating that a switch to alternative …

Additional Taxonomic Refinements Suggested By Genomic Analysis Of Butterflies, Jing Zhang, Qian Cong, Jinhui Shen, Leina Song, Paul A. Opler, Nick V. Grishin

The Taxonomic Report of the International Lepidoptera Survey

Comparative analyses of genomic data reveal further insights into the phylogeny and taxonomic classification of butterflies presented here. As a result, 2 new subgenera and 2 new species of Hesperiidae are described: Borna Grishin, subgen. n. (type species Godmania borincona Watson, 1937) and Lilla Grishin, subgen. n. (type species Choranthus lilliae Bell, 1931) of Choranthus Scudder, 1872, Cecropterus (Murgaria) markwalkeri Grishin, sp. n. (type locality in Mexico: Sonora), and Hedone yunga Grishin, sp. n. (type locality in Bolivia: Yungas, La Paz). The lectotype is designated for Aethilla toxeus Plötz, 1882. The type locality of Dion uza (Hewitson, 1877) is likely …

Updated List Of Intercepted Coccidae (Hemiptera: Coccomorpha) At South Korean Ports Of Entry And Potential Invasive Species To South Korea, Soo-Jung Suh

Insecta Mundi

An updated list is given of 25 species of soft scale insects (Hemiptera: Coccidae) which have been intercepted on plants imported into South Korea during the period of 1996 to 2021. Information on the num­ber of interceptions, host plants, distribution and origin of species intercepted at South Korean ports of entry is provided. In addition, data on intercepted species was analyzed to determine potential invasive species of soft scales that could threaten South Korean plants.

Soft scale insects (Hemiptera: Coccomorpha: Coccidae) occur in all zoogeographical regions of the world. The Coccidae is the third largest family of scale insects (Hemiptera: …

Eeg Decoding Of Finger Numeral Configurations With Machine Learning, Roya Salehzadeh, Brian Rivera, Kaiwen Man, Nader Jalili, Firat Soylu

Department of Psychology: Faculty Publications

In this study, we used multivariate decoding methods to study processing differences between canonical (montring and count) and noncanonical finger numeral configurations (FNCs). While previous research investigated these processing differences using behavioral and event-related potentials (ERP) methods, conventional univariate ERP analyses focus on specific time intervals and electrode sites and fail to capture broader scalp distribution and EEG frequency patterns. To address this issue a supervised learning classifier—support vector machines (SVM)—was used to decode ERP scalp distributions and alpha-band power for montring, counting, and noncanonical FNCs (for integers 1 to 4). The SVM was used to test whether the numerical …

Decomposition Rate As An Emergent Property Of Optimal Microbial Foraging, Stefano Manzoni, Arjun Chakrawal, Glenn Ledder

Department of Mathematics: Faculty Publications

Decomposition kinetics are fundamental for quantifying carbon and nutrient cycling in terrestrial and aquatic ecosystems. Several theories have been proposed to construct process-based kinetics laws, but most of these theories do not consider that microbial decomposers can adapt to environmental conditions, thereby modulating decomposition. Starting from the assumption that a homogeneous microbial community maximizes its growth rate over the period of decomposition, we formalize decomposition as an optimal control problem where the decomposition rate is a control variable. When maintenance respiration is negligible, we find that the optimal decomposition kinetics scale as the square root of the substrate concentration, resulting …

Intraguild Predation Is Increased In Areas Of Low Prey Diversity In A Generalist Predator Community, Stella F. Uiterwaal, Amber J. Squires, Bennett A. Grappone, Brian Dillard, Ariadne Castaneda, Sora L. Kim, John P. Delong

School of Biological Sciences: Faculty Publications

1. Niche differentiation and intraguild predation (IGP) can allow ecologically similar species to coexist, although it is unclear which coexistence mechanism predominates in consumer communities. Until now, a limited ability to quantify diets from metabarcoding data has precluded the use of sequencing data to determine the relative importance of these mechanisms.

2. Here, we pair a recent metabarcoding quantification approach with stable isotope analysis to examine diet composition in a wolf spider community.

3. We compare the prevalence of resource partitioning and IGP in these spiders and test whether factors that influence foraging performance, including individual identity, morphology, prey community and environmental conditions, …

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‘Chinese Virus’: A Critical Discourse Analysis Of Anti-Asian Racist Discourse During The Covid-19 Pandemic, Peiwen Wang, Theresa Catalano

Department of Teaching, Learning, and Teacher Education: Faculty Publications

Since the emergence of COVID-19, researchers have documented an increase in cases of anti-Asian racism and hate crimes. Research shows a possible connection between the ‘Chinese virus’ discourse of the Trump administration and violence in society (Arora and Kim 2020:387). Drawing from critical discourse studies we explore 2,071 comments from one YouTube video which documents anti-China rhetoric by the Trump administration in order to understand the underlying strategies commenters relied on in their reproduction and defence of this discourse. Findings show the trickle-down influence of Trump’s discourse on YouTube commenters, but also ways in which social media created a platform …

Amicus Brief - Eggers V. Evnen, No. 22-2268, 8th Circuit, August 2, 2022, Anthony Schutz

Nebraska State Constitution

Because Nebraska’s constitutional provision for direct democracy involves voting and the exercise of the People’s legislative authority, it is subject to the principles of Reynolds v. Sims and the Fourteenth Amendment to the U.S. Constitution. This understanding of the People’s power of initiative and referendum as legislative is supported by Nebraska history, as is the severability of the two-fifths, county-distribution requirement from Article III, § 2 of the Nebraska Constitution. The county-distribution requirement fails the one-person-one-vote constraint placed upon States by the federal constitution. As a matter of statistical analysis, that requirement gives more power to voters in counties with …