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Origins Of High Latitude Introductions Of Aedes Aegypti To Nebraska And Utah During 2019, Andrea Gloria-Soria, Ary Faraji, Jeff Hamik, Gregory White, Shanon Amsberry, Matthew Donahue, Bryan Buss, Evlyn Pless, Luciano Veiga Cosme, Jeffrey R. Powell

Department of Educational Psychology: Faculty Publications

Aedes aegypti (L.), the yellow fever mosquito, is also an important vector of dengue and Zika viruses, and an invasive species in North America. Aedes aegypti inhabits tropical and sub-tropical areas of the world and in North America is primarily distributed throughout the southern United States states and Mexico. The northern range of Ae. aegypti is limited by cold winter months and establishment in these areas has been mostly unsuccessful. However, frequent introductions of Ae. aegypti to temperate, non-endemic areas during the warmer months can lead to seasonal activity and disease outbreaks. Two Ae. aegypti incursions were …

Onboarding Program Eastern Band Of Cherokee Indians - Theory Of Change, Quality Improvement Center For Workforce Development

Other QIC-WD Products

During the needs assessment process facilitated by the Quality Improvement Center for Workforce Development (QIC-WD) three areas of need were discussed for possible intervention at Eastern Band of Cherokee Indians (EBCI) Family Safety Program (FSP): 1) team cohesion across the various agency units, 2) unhealthy levels of employee stress and work overload, and 3) inconsistent onboarding practices. For each area, a problem statement was developed, and in-depth root cause analysis and theory of change discussions were conducted. Ultimately, one theory of change was developed to step through the “if, then” logic for implementation of an onboarding program to improve worker …

Optimization Of Nozzle, Application Height, And Speed For Uass Pesticide Applications, Trenton Houston

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Unmanned aerial spray systems (UASS) applications have the potential to be efficient pesticide application platforms under conditions that are not accessible or fit for typical pesticide application equipment. Although this type of application is still under development in the United States, UASS pesticide applications are common in Asia, as they have replaced backpack sprayers. There is limited literature on the optimization of UASS applications and many parameters need to be investigated to identify the best combination of application variables such as flight height, flight speed, and nozzle selection. The objectives were to identify the deposition patterns of a four rotor …

Differential Effects Of Protein Isolates On The Gut Microbiome Under High And Low Fiber Conditions, Marissa Behounek

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

Protein isolates are a growing market share in the food industry both as food ingredients and as supplements. All dietary habits can influence and alter the gut microbiome; however, little is known about how protein isolates from different sources will change the composition and function of the gut microbiota under high and low fiber conditions. The study aims to determine the microbiome response to plant and animal protein isolates under high- and low-dietary fiber (H/LDF) conditions. Six commercially available protein isolates (beef, egg white, milk, pea, and two soy protein isolates) were subjected to in vitro enzymatic digestion and dialysis …

Analyzing Clustered Longitudinal Data Using Latent Curve Model With Structured Residuals (Lcm-Sr), Dongho Choi

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

The LCM-SR can provide an inferential basis for understanding reciprocal relations while controlling for individual differences in the trajectories of young children’s psychological development. Yet, a hierarchical structure in the data has not been often adequately addressed even though that is common in social and educational research. The purpose of this study is to explore the impact of dependency among observations on the results when using the LCM-SR, and how to appropriately analyze the clustered longitudinal data for more accurate inference. To do this, the MLCM-SR (disaggregated approach; the “two-level” model) was introduced and compared with the single level LCM-SR …

Education Anywhere? A Constructivist Grounded Theory Study Of Montessori Around The World, Victoria J. Johnson

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

Providing education for children residing in remote or difficult-to-access locations, including children in refugee and displacement camps, is a staggering global challenge. In addition to logistical challenges (such as access, infrastructure, teaching professionals and resources), differences in language, culture, environment, and values render conventional (i.e., Western-based, traditional) modes of education unfeasible and frequently ineffective. However, a strengths-based lens reminds us that communities have the capacity to initiate solutions when they have access to the right tools. Historically underrepresented in the literature, Montessori education has been used for over a century by communities all over the world to prepare children through …

Understanding Unwanted Sexual Experiences Of Transgender And Gender Diverse Individuals: An Interpretative Phenomenological Study, Melissa Larosa

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

Transgender and gender diverse (TGD) people represent a small percent of the population and yet, they experience sexual violence at disproportionately high rates compared to their cisgender counterparts (Grant et al, 2011; James et al., 2016). The purpose of this interpretative phenomenological study is to gain a more nuanced understanding of the role that unwanted sexual experiences play in the lives of transgender and gender diverse people, particularly in relation to how they conceptualize their gender identity and the construct of posttraumatic growth (PTG). Semi-structured interviews were conducted with eight TGD participants who met the inclusion criteria. Two superordinate (i.e., …

Molecular Mechanisms Underlying Mucosal Attachment And Colonization By Clostridioides Difficile, Ben Sidner

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

Clostridioides difficile is a Gram-positive, spore-forming, anaerobic bacterium which causes gastrointestinal disease and is a leading cause of nosocomial infections. Although infection typically occurs following antibiotic therapy, in recent years there has been an increase in infections which are not preceded by antibiotic use. Additionally, community-associated infections and rates of disease recurrence have increased. While it is understood that a healthy gastrointestinal microbiota provides protection against infection, the molecular mechanisms which underly C. difficile's ability to colonize and persist in the gut are mostly unknown. Building on work from others that suggests C. difficile associates with the outer mucus …

Neuropilin-2 Regulates Androgen-Receptor Transcriptional Activity In Advanced Prostate Cancer, Samikshan Dutta, Navatha Shree Polavaram, Ridwan Islam, Sreyashi Bhattacharya, Sanika Bodas, Thomas Mayr, Sohini Roy, Sophie Alvarez, Marieta I. Toma, Anza Darehshouri, Angelika Borkowetz, Stefanie Conrad, Susanne Fuessel, Manfred Wirth, Gustavo B. Baretton, Paramita Ghosh, Kenneth J. Pienta, David L. Klinkebiel, Surinder K. Batra, Michael H. Muders, Kaustubh Datta

Department of Agronomy and Horticulture: Faculty Publications

Aberrant transcriptional activity of androgen receptor (AR) is one of the dominant mechanisms for developing of castration-resistant prostate cancer (CRPC). Analyzing AR-transcriptional complex related to CRPC is therefore important towards understanding the mechanism of therapy-resistance. While studying its mechanism, we observed that a transmembrane protein called neuropilin-2 (NRP2) plays a contributory role in forming a novel AR-transcriptional complex containing nuclear pore proteins. Using immunogold electron microscopy, high-resolution confocal microscopy, chromatin immunoprecipitation, proteomics, and other biochemical techniques, we delineated the molecular mechanism of how a specific splice variant of NRP2 becomes sumoylated upon ligand stimulation and translocates to the inner nuclear …

Effect Of Injury Mechanism And Severity On The Molecular Pathophysiology Of Traumatic Brain Injury, Brandon Mcdonald

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Traumatic brain injury (TBI) mechanism and severity are heterogenous clinically, resulting in a multitude of physical, cognitive, and behavioral deficits. However, approximately 80% suffer from milder injuries. Thus, examining pathophysiological changes associated with mild TBI is imperative for improving clinical translation and evaluating the efficacy of potential therapeutic strategies. Through this work, we developed models of TBI, ranging in both injury mechanism and severity, using an electromagnetic controlled cortical impact (CCI) device. First, we characterized and optimized a closed head, mild TBI model (DTBI) to determine the clinical translatability and practicality of producing repeated mild injuries. Interestingly, we determined that …

Comparative Susceptibility Of Eastern Cottontails And New Zealand White Rabbits To Classical Rabbit Haemorrhagic Disease Virus (Rhdv) And Rhdv2, Fawzi Mohamed, Thomas Gidlewski, Mary L. Berninger, Heather M. Petrowski, Alexa J. Bracht, Carla Bravo De Rueda, Roger W. Barrette, Meredith Grady, Emily S. O'Hearn, Charles E. Lewis, Karen E. Moran, Tracy L. Sturgill, Lorenzo Capucci, J. Jeffrey Root

United States Department of Agriculture Wildlife Services: Staff Publications

Rabbit haemorrhagic disease virus (RHDV) is associated with high morbidity and mortality in the European rabbit (Oryctolagus cuniculus). In 2010, a genetically distinct RHDV named RHDV2 emerged in Europe and spread to many other regions, including North America in 2016. Prior to this study it was unknown if eastern cottontails (ECT(s); Sylvilagus floridanus), one of the most common wild lagomorphs in the United States, were susceptible to RHDV2. In this study, 10 wild-caught ECTs and 10 New Zealand white rabbits (NZWR(s); O. cuniculus) were each inoculated orally with either RHDV (RHDVa/GI.1a; n = 5 per species) or RHDV2 (a recombinant …

Solar Radiation And Soil Moisture Drive Tropical Forest Understory Responses To Experimental And Natural Hurricanes, J. Aaron Hogan, Joanne M. Sharpe, Ashley Van Beusekom, Sarah Stankavich, Samuel Matta Carmona, John E. Bithorn, Jamarys Torres-Díaz, Grizelle González, Jess K. Zimmerman, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

Tropical forest understory regeneration occurs rapidly after disturbance with compositional trajectories that depend on species availability and environmental conditions. To predict future tropical forest regeneration dynamics, we need a deeper understanding of how pulse disturbance events, like hurricanes, interact with environmental variability to affect understory demography and composition. We examined fern and sapling mortality, recruitment, and community composition in relation to solar radiation and soil moisture using 17 years of forest dynamics data (2003–2019) from the Canopy Trimming Experiment in the Luquillo Experimental Forest, Puerto Rico. Solar radiation increased 150% and soil moisture increased 40% following canopy trimming of experimental …

Frontline Job Redesign Louisiana - Needs Assessment Summary, Quality Improvement Center For Workforce Development

Other QIC-WD Products

Exploration of Need

The QIC-WD and the Louisiana Department of Child and Family Services (DCFS) Child Welfare Division (CWD) worked together to conduct a needs assessment. A variety of information was explored to learn about the current workforce and the agency’s child welfare workforce practices, including: 1) recruitment, hiring, and retention metrics and processes; 2) organizational culture and climate; and 3) other workforce processes and initiatives, such as onboarding, mentoring, supervision, performance management, and employee recognition.

More specifically, five major types of information were considered: 1) objective administrative data; 2) subjective perceptions of staff and supervisors, gathered through QIC-WD …

Access To Online Formative Assessments In Introductory Biology Courses: Investigating Barriers To Student Engagement, Allison M. Upchurch

School of Biological Sciences: Dissertations, Theses, and Student Research

Instructors use a variety of online formative assessment (FA) activities to support learning outside of class. Previous studies have revealed barriers for students in online courses, but little is known about the barriers students experience when completing online FA assignments. Understanding these barriers to access is critical to fostering more inclusive learning for all students. Using a framework from previous work in online learning, we examined student perceptions of online FA access with respect to five barrier categories: technical resources, instructor organization, social interactions, personal engagement, and learning environment. We developed and administered a survey to over 1200 undergraduate biology …

Methanogen Metabolic Flexibility, Sean R. Carr

School of Biological Sciences: Dissertations, Theses, and Student Research

Methanogens are obligately anaerobic archaea which produce methane as a byproduct of their respiration. They are found across a wide diversity of environments and play an important role in cycling carbon in anaerobic spaces and the removal of harmful fermentation byproducts which would otherwise inhibit other organisms. Methanogens subsist on low-energy substrates which requires them to utilize a highly efficient central metabolism which greatly favors respiratory byproducts over biomass. This metabolic strategy creates high substrate:product conversion ratios which is industrially relevant for the production of biomethane, but may also allow for the production of value-added commodities. Particularly of interest are …

Frontline Job Redesign Louisiana - Intervention Background, Quality Improvement Center For Workforce Development

Other QIC-WD Products

What is job redesign and why was it selected?

The Louisiana Department of Children and Family Services (DCFS), Child Welfare Division (CWD) partnered with the Quality Improvement Center for Workforce Development (QIC-WD) to develop, implement, and test an intervention to address issues identified in the needs assessment including low employee morale, high staff turnover, and poor outcomes for families and children. A frontline job redesign was selected as the intervention because the agency wished to approach these long-standing challenges in an innovative manner. A job redesign is comprised of activities that alter specific jobs or interdependent systems of jobs in …

Sped 874: Language Arts And Literacy For Students Who Are Deaf/Hard Of Hearing, Anne E. Thomas

UNL Faculty Course Portfolios

This portfolio documents the process I used to critically analyze the structure, teaching methods, assessment, and students learning in SPED 874 Language Arts and Literacy for Children who are Dear/Hard of Hearing. This is a course that students in the Deaf Education Program at the University of Nebraska-Lincoln (UNL) take while pursuing a master’s degree and/or graduate endorsement in Deaf Education. This portfolio documents how I aligned the course objectives, content, and activities to the Council for Exceptional Children - Initial Specialty Set for Teachers of the Deaf/Hard of Hearing (CEC-DHH). I share the results of one method I use …

Key Factors Surrounding The Survival And Thrival Of Rural Schools In Nebraska Through The Eyes Of Superintendents: A Mixed Methods Study, Sadie Coffey

Department of Educational Administration: Dissertations, Theses, and Student Research

Rural school success is crucial for the Nebraska education system. Without rural schools, many students and families would be without access to high quality educational opportunities. Despite the importance of rural education, the number of rural schools in Nebraska continues to decline, and “one thing is clear from academic research on rural schools: closings and consolidations can drastically change the flavor of civic life in a rural community” (McCullum & Merrefield, 2019, p. 1). Identity loss and identity crisis theories may explain why these rural schools in Nebraska continue to survive and thrive. Without the rural school, a community and …

The Impact Of Steam-Flaked Rye Replacing Steam-Flaked Corn On Performance And Carcass Characteristics Of Yearling Steers And The Effect Of Exogenous Megasphaera Elsdenii Administration Techniques On Ruminal Fermentation And Blood Parameters In An Acidosis Challenge Model, Samantha K. Wagner

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

A feedlot study was conducted to evaluate the effects of replacing steam-flaked corn (SFC) with steam-flaked rye (SFR) in the diets of yearling steers (Exp. 1). A separate study was conducted to evaluate the effects of three different administration techniques of Megasphaera elsdenii NCIMB 41125 on rumen fermentation and blood parameters in an acidosis challenge model (Exp. 2). In Exp. 1, SFC was replaced with SFR to create four different treatments, each differing in the ratio of SFC:SFR. The four treatments were 0:100, 25:75, 50:50, and 100:0 SFR:SFC (as a percentage of the grain inclusion). Increasing inclusions of SFR resulted …

Algorithmic Decision-Making And Corporate Risk: Toward Transparency Through Corporate Disclosures, Kevin X. Kuhn

Nebraska Law Review

Consider this hypothetical scenario: a national car seller implements an algorithmic decision-making system to raise profits by ten percent in the next year. The algorithm will target the most competitive geographic market for a particular vehicle, recommend a price, and screen consumers for creditworthiness. The algorithm is immensely successful, and the corporation achieves its goal for increased profits. But a disturbing trend emerges when multiple consumers file lawsuits alleging discriminatory practices. Consumers claim that the corporation gave Black borrowers with otherwise equal credentials less favorable loan terms than white borrowers. Barred from bringing suit by a contractual arbitration provision and …

Saying The Quiet Parts Out Loud: Teaching Students How Law School Works, Alexa X. Chew, Rachel Gurvich

Nebraska Law Review

The summer of 2020 was an inflection point for legal education’s relationship with racial and other inequities. After Minneapolis police murdered George Floyd, faculty, administrators, and students spoke out with increased urgency about the need to address race in law school curricula. For example, professors sought to give race context to cases found in law school casebooks by not presenting judicial opinions as neutral statements of the law. Many law schools, including our own, formally (re)dedicated themselves to helping students recognize and analyze structural inequalities and how the law perpetuates them. Law schools focused on what their faculty and graduates …

Nebraska’S Anything-But-Uniform Residential Landlord And Tenant Act, Ryan P. Sullivan

Nebraska Law Review

This Article examines Nebraska’s “Uniform” Residential Landlord and Tenant Act (Nebraska’s Act or the Act), discusses recent attempts by the modern legislature to return balance to the laws governing residential tenancies, and offers guidance for continuing this effort. Part II of the Article offers an overview of landlord–tenant law and why protections are necessary in this unique consumer environment. Part III describes what went down in 1973–1974, when Nebraska’s Legislature adopted its version of the Act, and examines select provisions that were substantially and substantively modified from the Uniform Act. Finally, Part IV proposes options to obtain equilibrium and uniformity …

Involuntary Sterilization Of Native American Women In The United States: A Legal Approach, Genesis M. Agosto

Nebraska Law Review

United States law permitted involuntary sterilization of Native American women through federal policies and regulations during the 1970s. Although the federal laws regarding sterilization were facially neutral, the administrative acts implemented by the government had disparate impacts on minority and socially disadvantaged communities, particularly Indigenous women. A close analysis of these laws and administrative funding reveals that the government ultimately enabled involuntary sterilization of Indigenous women. As a result, Native American victims and their respective tribes should be entitled to some form of legal remedy by the federal government.

Native Americans, in general, represented a unique class of victims among …

Nanoporous Starch Aerogels Impregnated With Phytosterols And Methods Of Preparing The Nanoporous Starch Aerogels, Ozan Nazim Ciftci

Department of Food Science and Technology: Faculty Publications

Formation of low - crystallinity phytosterol nanoparticles via cooling - controlled supercritical carbon dioxide (SC - CO₂) impregnation of phytosterols into biodegradable nanoporous starch aerogels and methods of preparing these aerogels are disclosed . The nanoporous starch aerogels increase water dissolution and bioaccessibility of the phytosterols , thereby making them available for preparation of high nutraceutical value foods .

Variation On A Theme: The Structures And Biosynthesis Of Specialized Fatty Acid Natural Products In Plants, Samuel Scott, Edgar B. Cahoon, Lucas Busta

Department of Biochemistry: Faculty Publications

Plants are able to construct lineage-specific natural products from a wide array of their core metabolic pathways. Considerable progress has been made toward documenting and understanding, for example, phenylpropanoid natural products derived from phosphoenolpyruvate via the shikimate pathway, terpenoid compounds built using isopentyl pyrophosphate, and alkaloids generated by the extensive modification of amino acids. By comparison, natural products derived from fatty acids have received little attention, except for unusual fatty acids in seed oils and jasmonate-like oxylipins. However, scattered but numerous reports show that plants are able to generate many structurally diverse compounds from fatty acids, including some with highly …

A New Species Of Neostenoptera Meunier (Diptera: Cecidomyiidae: Winnertziinae) From Hawai‘I, John D. Plakidas, Nhu H. Nguyen, Michael L. Ferro

Insecta Mundi

A new paedogenetic midge (Diptera: Cecidomyiidae: Winnertziinae: Heteropezini) from O‘ahu Island, Hawai‘i, Neostenoptera hawaiiensis Plakidas, Nguyen, and Ferro, new species, is described and illus­trated. A key to all species in the genus is provided. Specimens were emergent from deadwood gathered at Waimea Arboretum and Botanical Garden. Neostenoptera appalachiensis Plakidas and Ferro were collected from the same set of samples in Hawai‘i, and additional specimens are reported from Georgia and South Carolina, three new state records. The discovery of two paedogenetic midges in Hawai‘i poses a unique set of questions as to their possible mode of arrival on an …

Tomoxia Bucephala A. Costa (Coleoptera: Mordellidae), A Palearctic Tumbling Flower Beetle Established In North America, R. F. C. Naczi, Robert A. Androw, John Rosenfeld

Insecta Mundi

Tomoxia bucephala A. Costa (Coleoptera: Mordellidae), a Palearctic tumbling flower beetle native to Europe, Asia, and northernmost Africa, is now known from North America. The first known occurrences were in 2015 in Essex and Union counties, New Jersey, U.S.A. and in 2019 in Passaic County, New Jersey, all in the New York City metropolitan area. An additional collection documents the species in 2016 from Allegheny County, Pennsylvania, in the Pittsburgh metropolitan area. The multiple occurrences, the large distance between those in New Jersey and Pennsylvania, and multiple detections in natural areas indicate T. bucephala is established in North America and …

Mentoring Undergraduate Research In Mathematical Modeling, Glenn Ledder

Department of Mathematics: Faculty Publications

In writing about undergraduate research in mathematical modeling, I draw on my 31 years as a mathematics professor at the University of Nebraska–Lincoln, where I mentored students in honors’ theses, REU groups, and research done in a classroom setting, as well as my prior experience. I share my views on the differences between research at the undergraduate and professional levels, offer advice for undergraduate mentoring, provide suggestions for a variety of ways that students can disseminate their research, offer some thoughts on mathematical modeling and how to explain it to undergraduates, and discuss the challenges involved in broadening research participation …

Mentoring Undergraduate Research In Mathematical Modeling, Glenn Ledder

Department of Mathematics: Faculty Publications

In writing about undergraduate research in mathematical modeling, I draw on my 31 years as a mathematics professor at the University of Nebraska–Lincoln, where I mentored students in honors’ theses, REU groups, and research done in a classroom setting, as well as my prior experience. I share my views on the differences between research at the undergraduate and professional levels, offer advice for undergraduate mentoring, provide suggestions for a variety of ways that students can disseminate their research, offer some thoughts on mathematical modeling and how to explain it to undergraduates, and discuss the challenges involved in broadening research participation …

Metaphylactic Antimicrobial Effects On Occurrences Of Antimicrobial Resistance In Salmonella Enterica, Escherichia Coli And Enterococcus Spp. Measured Longitudinally From Feedlot Arrival To Harvest In High-Risk Beef Cattle, Nathan S. Long, James E. Wells, Elaine D. Berry, Jerrad F. Legako, Dale R. Woerner, Guy H. Loneragan, Paul R. Broadway, Jeff A. Carroll, Nicole C. Burdick Sanchez, Samodha C. Fernando, Carley M. Bacon, Cory L. Helmuth, Taylor M. Smock, Jeff L. Manahan, Ashley A. Hoffman, Kristin E. Hales

Department of Animal Science: Faculty Publications

Aims: Our objective was to determine how injectable antimicrobials affected populations of Salmonella enterica, Escherichia coli and Enterococcus spp. in feedlot cattle.

Methods and Results: Two arrival date blocks of high-risk crossbred beef cattle (n = 249; mean BW = 244 kg) were randomly assigned one of four antimicrobial treatments administered on day 0: sterile saline control (CON), tulathromycin (TUL), ceftiofur (CEF) or florfenicol (FLR). Faecal samples were collected on days 0, 28, 56, 112, 182 and study end (day 252 for block 1 and day 242 for block 2). Hide swabs and subiliac …