Pennsylvania Principals’ Describe Their Work, Examined Through The Theory Of Transformational Leadership, Shannon O'Donnell

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Being raised in a district composed of rural and suburban communities and later spending years teaching in urban and suburban school districts, I was able to define one key factor: successful students had one or more significant adult who provided them with meaningful guidance and support. For many, a classroom teacher and the experiences, mentorship, and compassion they provided happen to be that significant factor that changed the lives. I observed that as a classroom teacher, individuals are only responsible for designing instruction and activities, and regularly interacting with 20-30 students on a consistent basis. I felt that as an …

Perspectives On Insecticide Resistance Management: Past, Present, And Future, Jacob Nikodym

Doctor of Plant Health Program: Dissertations and Student Research

The use of chemical products to control arthropod pests has occurred for thousands of years, beginning with the use of inorganic products in ancient cultures, and progressing to the development of synthetic insecticides beginning in the early 20^th century. As these chemicals have imposed selection pressure on insects, the insects have adapted to this pressure, leading to the development of insecticide resistance. Since it was first reported in 1914, insecticide resistance has grown to be a major concern facing agricultural production, as each insecticide chemistry introduced is impacted by the evolution of resistance.

In the latter half of the …

Considerations For Science Communications In A Changing Media Landscape, Emily Stine

Doctor of Plant Health Program: Dissertations and Student Research

Technology development has radically shaped science communication techniques. Science communicators should be prepared to face these changes as they provide valuable new methods for increased engagement. Currently, communicators rely on deficit models (top-down transmission) and dialogic models (bottom-up transmission) to present information. The decision on which model to use is reliant upon the communicator’s skill level and impression of the relationship between scientists and the general public. Developing effective communication relies on communicators determining goals (long-term aspirations) and objectives (short-term aspirations) while maintaining a clear view of the public’s attitudes and evaluation frames. The tools available to science communicators and …

Investigating The Role Of Spiders In Integrated Pest Management For Biological Control Of Nebraska Crop Pests, Samantha Daniel

Department of Entomology: Dissertations, Theses, and Student Research

As generalist predators, spiders are capable of fulfilling a wide variety of ecological niches allowing them to intercept and prey upon an array of insect species. This characteristic could be particularly advantageous within agricultural ecosystems. This project sought to reveal the composition and abundance of spider communities within cornfields in western Nebraska and the impact of agronomic practices on those communities as well as determine the potential for spider predation upon two key pests of corn. Spiders were collected from eight corn fields from May to August 2017 and four corn fields from May to August 2018. Additionally, the populations …

From Starter To Finish: Learning The Literacy Of Sourdough, Molly Mcconnell

Department of English: Dissertations, Theses, and Student Research

Using the New Literacy Studies and the work of James Paul Gee, the process of making sourdough bread is conceptualized as a literacy, which is then located within food literacy. The literacy of sourdough offers an alternative to neoliberal discourse. The literacy is linked to the rise in popularity of sourdough during the COVID-19 pandemic and is used to explore Bourdieu’s cultural capital. It also connects, rhizomatically (Deleuze and Guattari), and is used to explore concepts of interdependence and time. After establishing this literacy, a pedagogically- focused essay draws upon ecocomposition to expand on what a composition process would look …

Risk-Based Evaluation Of Treatments For Water Used At A Pre-Harvest Stage To Mitigate Microbial Contamination Of Fresh Raspberry In Chile, Constanza Avello Lefno

Department of Food Science and Technology: Dissertations, Theses, and Student Research

The global agricultural sectors are facing challenges of providing food for a rapidly growing population while still meeting appropriate food quality and safety standards. Chile, a South American country with great climatic and soil diversity, is positioned among the top ten agricultural exporters in the world.

Berries are considered highly prioritized produce in terms of microbiological hazards. The work presented in this thesis primarily focuses on the control of microbial contamination in water used at a pre-harvest stage, for enhanced quality and safety of raspberry products in Chile destined for export.

Two studies were conducted to achieve the goals. In …

Groundwater Education: An Investigation Of Students' Use Of A Groundwater Modeling Tool, Holly White

School of Natural Resources: Dissertations, Theses, and Student Research

Groundwater is a critical resource for life on Earth. However, our groundwater resources are at risk due to human activities, making this a topic of importance within K-12 and undergraduate environmental education. Yet, students hold alternative conceptions and may have limited awareness about groundwater systems. One way to support students’ learning is by incorporating computer-based modeling tools into classrooms. Here, we explore the use a groundwater modeling tool, the Hydrogeology Challenge (HGC), among two age groups of students: seventh grade students and undergraduate students. In the seventh-grade population, we investigated how students relate or map model components to their real-world …

Conceptual Framework Linking Resource Size And Recreational Use, Derek Kane

School of Natural Resources: Dissertations, Theses, and Student Research

Participation in recreational activities at natural resource systems is important to many people. However, the use of these resource systems can cause negative social and ecological impacts. To manage the potential negative impacts of resource use, natural resource managers must have the ability to quantify and monitor the amount of use that is occurring. Unfortunately, it is difficult and costly to quantify and monitor resource system use. Natural resource management would benefit from uncovering a simple, easily accessible metric that could predict resource system use. The size of a resource system is related to social and ecological aspects of the …

The Relationship Between Quality Of Life, Extreme Climatological Conditions And Social Unrest In India, Daniel Schaefer

Department of Sociology: Dissertations, Theses, and Student Research

Scholars have grown increasingly interested in the association between climate conditions and social unrest. Though no consensus exists regarding the specific mechanisms that connect both phenomena, scholars have found a links between rising temperatures, precipitation, or the magnitude of disasters and social unrest. However, is unclear to what extent deviations from historical trends rather than absolute levels might serve as important indicators of unrest. Moreover, it remains unclear how effectively socio-demographic factors like quality of life and ethno-religious fragmentation can explain trends on unrest, net of climatological indicators. This project tests the extent to which deviation from historical trends in …

Arbor Day Foundation Tree Programs Recommendations Report, Lane Knott, Mary Morton, Peyton Walker, Haley Faust, Kyler Caverzagie, Alex Sanchez

Honors Program: Senior Projects (Public)

Executive Summary

Project Description

We explored ways for the Arbor Day Foundation (ADF) to increase the value proposition for Tree Cities and Tree Campuses through application addendums and existing organizations.

Recommendation

We propose including an addition to the Tree City application for a grant awarded to Tree Cities that plant trees in underserved areas of the community.

We also recommend inviting Tree Campus to join the Alliance for Community Trees (ACT). Through membership, they will attend and participate in the Partners in Community Forestry Conference.

Rationale

The Tree City program is being under-utilized in connecting resources with communities. ADF can …

Prospective Predictors Of Receiving Disclosures Of Intimate Partner Violence And Sexual Assault Among College Students, Christina M. Dardis, Katie R. Davin, Lindsey M. Rodriguez, Emily R. Dworkin, Katie M. Edwards, Sarah E. Ullman, Emily A. Waterman

Department of Educational Psychology: Faculty Publications

Objective: Previous research has indicated that many undergraduates receive disclosures of sexual assault and intimate partner violence (IPV) from their peers; however, much of this research has been cross-sectional. The present study assessed the extent to which demographic characteristics and victimization history predicted whether participants received disclosures over the subsequent 6 months. Directional hypotheses assessed whether psychological symptoms and attitudes predicted, or were consequences of, disclosures at follow-up.

Method: College students (n = 867) from a broader treatment intervention study completed pretest (Time 1) and 6-month follow-up surveys (Time 2).

Results: Individuals who reported new disclosures at follow-up (56%) were …

Gray Wolves, Eric Gese, John P. Hart, Patricia Terletzky

Wildlife Damage Management Technical Series

Wolf conflicts are primarily related to predation on livestock, pets and other domestic animals, as well as their direct and indirect impacts on native ungulates (i.e., big game). Economic losses vary widely with some livestock producers facing high levels of depredation in some areas. This publication focuses on wolf ecology, damage, and management, particularly as it relates to wolf depredation on livestock and other conflicts with people.

Wolves and people share the same environments more than people realize. In the U.S., wolves are not confined to wilderness areas. Though curious, wolves generally fear people and rarely pose a threat to …

A Midsummer Night’S Dream: A Scenic Design, Grace Trudeau

Johnny Carson School of Theatre and Film: Theses, Student Research, and Creative Work

The purpose of this thesis is to provide research, supporting paperwork, production photographs, and other materials which document the scenic design for the Nebraska Repertory Theatre’s production of A Midsummer Night’s Dream by William Shakespeare. This thesis contains the following: research images indicating thematic ideas for Athens and the Forest, weather patterns for Athens and Woodland, environmental textures and colors, shapes, and forms; preliminary sketches and photographs of the ¼” scale model; a full set of drafting plates and paint samples, a set dressing reference book; paperwork generated during the rehearsal process; and additional information. Archival production photographs are available …

Nebraska Cow–Calf Operations: Use Of Pricing Tools And Market Diversification Strategies To Manage Market Risk, Logan Kalkowski

Department of Agricultural Economics: Dissertations, Theses, and Student Research

This thesis is divided into three chapters. The first chapter of this thesis investigates years of research and data collection from multiple agencies to find connections to reasoning for producers to choose marketing and diversification tools used in their operation.

The second chapter examines cow-calf marketing and risk management practices in Nebraska. Marketing and risk management behavior are examined by using the University of Nebraska-Lincoln Cow-calf survey data collected in 2016. The survey captures characteristics of operations and their use of marketing and risk management practices. While it is important to understand what operations are doing currently, it is also …

Building A Comprehensive Tree Index, Lauren Leapley

Honors Program: Senior Projects (Public)

No abstract provided.

Mngt 475h: Tree Programs Recommendation Report, Mary Morton

Honors Program: Senior Projects (Public)

Executive Summary

Project Description

We explored ways for the Arbor Day Foundation (ADF) to increase the value proposition for Tree Cities and Tree Campuses through application addendums and existing organizations.

Recommendations

We propose including an addition to the Tree City application for a grant awarded to Tree Cities that plant trees in underserved areas of the community.

We also recommend inviting Tree Campus to join the Alliance for Community Trees (ACT). Through membership, they will attend and participate in the Partners in Community Forestry Conference.

Rationale

The Tree City program is being under-utilized in connecting resources with communities. ADF can …

Arbor Day Foundation Tree Program Recommendation, Kyler Caverzagie

Honors Program: Senior Projects (Public)

We propose including an addition to the Tree City application for a grant awarded to Tree Cities that plant trees in underserved areas of the community.

We also recommend inviting Tree Campus to join the Alliance for Community Trees (ACT). Through membership, they will attend and participate in the Partners in Community Forestry Conference.

Drinking Water: Iron And Manganese, Bruce I. Dvorak, Becky Schuerman

Department of Civil and Environmental Engineering: Faculty Publications

Iron and manganese are two naturally occurring drinking water contaminants that can cause poor taste and odor issues, and be associated with discoloration that leads to staining of fixtures, dishes, and laundry. They are primarily found in Eastern Nebraska groundwater and most people mention these issues when iron levels exceed 300 micrograms per liter (µg/L) and manganese levels exceed 50 µg/L. Levels of iron can be much higher and are not associated with health concerns but manganese concentrations above 300 µg/L may pose a health issue for rice or soy formula-fed infants. Higher levels, over 1,000 µg/L, may pose a …

Population Genomics Of Invasive Rodents On Islands: Genetic Consequences Of Colonization And Prospects For Localized Synthetic Gene Drive, Kevin P. Oh, Aaron B. Shiels, Laura Shiels, Dimitri V. Blondel, Karl J. Campbell, J. Royden Saah, Alun L. Lloyd, Paul Q. Thomas, Fred Gould, Zaid Abdo, John R. Godwin, Antoinette J. Piaggio

United States Department of Agriculture Wildlife Services: Staff Publications

Introduced rodent populations pose significant threats worldwide, with particularly severe impacts on islands. Advancements in genome editing have motivated interest in synthetic gene drives that could potentially provide efficient and localized suppression of invasive rodent populations. Application of such technologies will require rigorous population genomic surveys to evaluate population connectivity, taxonomic identification, and to inform design of gene drive localization mechanisms. One proposed approach leverages the predicted shifts in genetic variation that accompany island colonization, wherein founder effects, genetic drift, and island-specific selection are expected to result in locally fixed alleles (LFA) that are variable in neighboring nontarget populations. Engineering …

Phenological Corrections To A Field-Scale, Et-Based Crop Stress Indicator: An Application To Yield Forecasting Across The U.S. Corn Belt, Yang Yang, Martha C. Anderson, Feng Gao, David M. Johnson, Yun Yang, Liang Sun, Wayne Dulaney, Christopher R. Hain, Jason A. Otkin, John Prueger, Tilden P. Meyers, Carl J. Bernacchi, Caitlin E. Moore

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

Soil moisture deficiency is a major factor in determining crop yields in water-limited agricultural production regions. Evapotranspiration (ET), which consists of crop water use through transpiration and water loss through direct soil evaporation, is a good indicator of soil moisture availability and vegetation health. ET therefore has been an integral part of many yield estimation efforts. The Evaporative Stress Index (ESI) is an ET-based crop stress indicator that describes temporal anomalies in a normalized evapotranspiration metric as derived from satellite remote sensing. ESI has demonstrated the capacity to explain regional yield variability in water-limited regions. However, its performance in some …

Understanding Rumen Microbial Community Structure And Function Towards Decreasing Methane Emissions, Allison L. Knoell

Department of Animal Science: Dissertations, Theses, and Student Research

Resource use is continually being limited due to this growth, therefore, production of high-quality animal protein sources, such as meat and milk, are challenged. The rumen microbiome is extensive and serves to provide several metabolic requirements for the animal for growth. Recently, a significant amount of research is being driven towards understanding the rumen microbiome due to its large effect on metabolic requirements.

A study was conducted to replace alfalfa with nonforage fiber sources in dairy cows. It was determined milk yield and intake are maintained when nonforage fibers replace forage sources, while decreasing methane levels. Water consumption decreased when …

Environmental Impacts Of Overdesign In Small Community Water Resource Recovery Facilities, Andrew Pham

Department of Environmental Engineering: Theses and Other Student Research

Although water resource recovery facilities (WRRFs) reduce environmental impacts related to water quality, their construction and operation result in negative environmental impacts in other categories. Past research into Nebraska WRRFs investigated variables determining energy intensity, opportunities and barriers for energy efficiency improvements, and environmental impacts of the construction and operation phase. This leads to the research question of what design practices can be considered to reduce the environmental impacts.

The Life Cycle Assessment (LCA) methodology was used to evaluate and compare the inventory and environmental impacts of nine small WRRFs, most of which are serving slow growing or declining populations. …

Development Of An Intraperitoneal Catheter Placement Device For Use On The Battlefield, Riley Reynolds

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

The objective of this project was to simplify peritoneal cavity access so an Airforce field medic can safely infuse oxygen microbubbles (OMBs) into the intraperitoneal space for the emergency treatment of hypoxia due to lung damage. To solve this problem, we created an intraperitoneal catheter placement device for use on the battlefield. The three common methods and some of the most common devices for peritoneal cavity access were reviewed. Injury frequencies for each of the three methods were analyzed. The results showed that each of the access techniques gives a similar rate of iatrogenic injury.

The battlefield conditions where the …

Examining Spatial Inequality In Covid-19 Positivity Rates Across New York City Zip Codes, Tse-Chuan Yang, Seulki Kim, Yunhan Zhao, Seung-Won Emily Choi

Department of Sociology: Faculty Publications

We aim to understand the spatial inequality in Coronavirus disease 2019 (COVID-19) positivity rates across New York City (NYC) ZIP codes. Applying Bayesian spatial negative binomial models to a ZIP-code level dataset (N = 177) as of May 31st, 2020, we find that (1) the racial/ethnic minority groups are associated with COVID-19 positivity rates; (2) the percentages of remote workers are negatively associated with positivity rates, whereas older population and household size show a positive association; and (3) while ZIP codes in the Bronx and Queens have higher COVID-19 positivity rates, the strongest spatial effects are clustered in Brooklyn and …

An Intron Variant Of The Gli Family Zinc Finger 3 (Gli3) Gene Differentiates Resistance Training-Induced Muscle Fiber Hypertrophy In Younger Men, Christopher G. Vann, Robert W. Morton, Christopher B. Mobley, Ivan J. Vechetti, Brian K. Ferguson, Cody T. Haun, Shelby C. Osburn, Casey L. Sexton, Carlton D. Fox, Matthew A. Romero, Paul A. Roberson, Sara Y. Oikawa, Chris Mcglory, Kaelin C. Young, John J. Mccarthy, Stuart M. Phillips, Michael D. Roberts

Department of Nutrition and Health Sciences: Faculty Publications

We examined the association between genotype and resistance training-induced changes (12 wk) in dual x-ray energy absorptiometry (DXA)-derived lean soft tissue mass (LSTM) as well as muscle fiber cross-sectional area (fCSA; vastus lateralis; n = 109; age = 22 ± 2 y, BMI = 24.7 ± 3.1 kg/m2). Over 315 000 genetic polymorphisms were interrogated from muscle using DNA microarrays. First, a targeted investigation was performed where single nucleotide polymorphisms (SNP) identified from a systematic literature review were related to changes in LSTM and fCSA. Next, genome-wide association (GWA) studies were performed to reveal associations between novel SNP targets with …

First Record Of Palonica Viridia (Ball, 1903) (Hemiptera: Membracidae) In Utah, Lawrence Barringer

Insecta Mundi

Palonica viridia (Hemiptera: Membracidae) is reported from Utah for the first time. Ecological and trapping information is also provided.

The genus Palonica Ball, 1931 contains seven species, four of which occur in the United States (Deitz and Wal­lace 2012; Wallace 2015). Palonica nogalana Ball is found only in Arizona while P. pyramidata (Uhler) and P. tremulata (Ball) have wide distributions across much of the United States and parts of Canada (Deitz and Wallace 2012). Palonica viridia (Ball) ranges west from Arizona, north to British Columbia and east to Texas and New York into Quebec. Presented is the first record of …

First Record Of Phaenops Obtusa (Horn) (Coleoptera: Buprestidae) In Massachusetts, Lawrence Barringer

Insecta Mundi

Phaenops obtusa (Coleoptera: Buprestidae) is reported from Massachusetts for the first time. Eco­logical and trapping information is also provided.

The genus Phaenops Dejean, 1833 (Coleoptera: Buprestidae), sometimes treated as a subgenus of Melanophila Eschscholtz (e.g. Bright 1987), contains 15 species in North America, five which occur in the northeast (Nelson et al. 2008; Paiero et al. 2012). Phaenops obtusa (Horn) is primarily distributed in southeastern United States from Louisiana to Florida and South Carolina, with a disjunct occurrence reported from New York (Nelson et al. 2008). Presented here is the first record of P. obtusa from Massachusetts, extending its disjunct …

Thyreos Completes Seed Funding From Invest Nebraska, Strategic Angel Investors, Nebraska Combine

The Combine

First paragraph:

Thyreos (https://www.thyreosvaccines.com/), a vaccine company that is developing a novel vaccine platform that protects against a range of herpesviruses, has announced a $750,000 investment round led by Invest Nebraska with participation from other local angel investors in the animal health and veterinary space.

Challenges And Opportunities In Precision Irrigation Decision-Support Systems For Center Pivots, Jingwen Zhang, Kaiyu Guan, Bin Peng, Chongya Jiang, Wang Zhou, Yi Yang, Ming Pan, Trenton Franz, Derek M. Heeren, Daran R. Rudnick, Olufemi P. Abimbola, Hyungsuk Kimm, Kelly Caylor, Stephen Good, Madhu Khanna, John Gates, Yaping Cai

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Irrigation is critical to sustain agricultural productivity in dry or semi-dry environments, and center pivots, due to their versatility and ruggedness, are the most widely used irrigation systems. To effectively use center pivot irrigation systems, producers require tools to support their decision-making on when and how much water to irrigate. However, currently producers make these decisions primarily based on experience and/or limited information of weather. Ineffective use of irrigation systems can lead to overuse of water resources, compromise crop productivity, and directly reduce producers’ economic return as well as bring negative impacts on environmental sustainability. In this paper, we surveyed …

Variants At The Asip Locus Contribute To Coat Color Darkening In Nellore Cattle, Beatriz B. Trigo, Adam T.H Utsunomiya, Alvaro A.A.D. Fortunato, Marco Milanesi, Rafaela B.P. Torrecilha, Harrison Lamb, Loan Nguyen, Elizabeth M. Ross, Ben Hayes, Romulo C.M. Padula, Thayla S. Sussai, Ludmilla B. Zabarez, Rafael S. Cipriano, Maria M.T. Caminhas, Flavia L. Lopes, Cassiano Pelle, Tosso Leeb, Danika Bannasch, Derek Bickhart, Timothy P.L. Smith, Tad S. Sonstegard, Jose F. Garcia, Yuri T. Utsunomiya

Roman L. Hruska U.S. Meat Animal Research Center: Reports

Background: Nellore cattle (Bos indicus) are well-known for their adaptation to warm and humid environments. Hair length and coat color may impact heat tolerance. The Nellore breed has been strongly selected for white coat, but bulls generally exhibit darker hair ranging from light grey to black on the head, neck, hump, and knees. Given the potential contribution of coat color variation to the adaptation of cattle populations to tropical and sub-tropical environments, our aim was to map positional and functional candidate genetic variants associated with darkness of hair coat (DHC) in Nellore bulls. Results: We performed a genome-wide association study …