Digital Commons Network^™

Kryging: Geostatistical Analysis Of Large-Scale Datasets Using Krylov Subspace Methods, Suman Majumder, Yawen Guan, Brian J. Reich, Arvind K. Saibaba

Department of Statistics: Faculty Publications

Analyzing massive spatial datasets using a Gaussian process model poses computational challenges. This is a problem prevailing heavily in applications such as environmental modeling, ecology, forestry and environmental health. We present a novel approximate inference methodology that uses profile likelihood and Krylov subspace methods to estimate the spatial covariance parameters and makes spatial predictions with uncertainty quantification for point-referenced spatial data. The proposed method, Kryging, applies for both observations on regular grid and irregularly-spaced observations, and for any Gaussian process with a stationary isotropic (and certain geometrically anisotropic) covariance function, including the popular Matérn covariance family. We make use of …

Hands-On With Ne Stem 4u: For Budding Stemers In Grades 4-8, Ne Stem 4u Program

Worlds of Connections Resources

Character Biographies 5

Chemistry: The Crystal Tree 10

Biology: Fruitful DNA 15 • Honey Purity Test 22 • Human DNA Extraction 26 • Model Cell 32 • Stethoscopes and Heart Rate 36

Engineering: Build a Catapult 41 • Building Bridges 47

Physics: Battling Balloons 51 • Balloon Popping 57 • Divin' Challenge 60 • Life Jackets and Buoyancy 65 • Simple Circuits 69 • Newton's Tower 75

Geology: Aquifers and Artesian Wells 80 • The Center of the Earth 84 • Mapping and Location Intelligence 88 • Seismology and Earthquakes 92 • Volcanoes 98

Mathematics: Hexaflexagons 102 • Stick Puzzle …

Measuring The Social And Ecological Performance Of Agricultural Innovations On Rangelands: Progress And Plans For An Indicator Framework In The Ltar Network, S. Spiegal, N. P. Webb, E. H. Boughton, R. K. Boughton, A. Bentley Brymer, P. E. Clark, C. D. Holifield Collins, D. L. Hoover Et. Al

School of Natural Resources: Faculty Publications

No abstract provided.

Research At Nebraska, 2021-2022 Report, University Of Nebraska-Lincoln

Office of Research and Economic Development: Publications

This publication is a snapshot of the fiscal year’s activities. To read more stories about research and creativity at Nebraska, visit the online edition at https://research.unl.edu/annualreport/2022. Additional multimedia are available for many stories.

Incorporating Chokeberry (Aronia) Into A Home Landscape, Claude J. Jean, Paul E. Read, Ellen T. Paparozzi

Nebraska Cooperative Extension: Faculty and Staff Publications

Chokeberry (Aronia) is an ornamental plant that has found use in the home landscape, providing colorful displays and annually producing berries for the enjoyment of the homeowner and wildlife alike. With careful placement, this durable plant needs minimal care and has few pest problems. It is gaining attention for its timeless beauty.

Differential Impact Of Biological And Behavioral Traits On Postexercise Energy Intake In Men Andwomen, Christoph Höchsmann, Safiya E. Beckford, Jeffery A. French, Julie B. Boron, Jared Stevens, Karsten Koehler

Department of Psychology: Faculty Publications

The energy intake response to exercise is highly variable and energy (over-) compensation via increased post-exercise energy intake occurs in some individuals but not others. In explorative analyses, we aimed to identify biological and behavioral predictors of post-exercise ad libitum energy intake and whether these predictors differ from ad libitum energy intake after rest.

Conclusions:Post-exercise energy intake is associatedwithdifferent factors than energy intake after rest and behavioral and biological traits differentially affect post-exercise energy intake in men and women. In women, habitual exercise behavior seems to predict postexercise energy intake, protecting against compensatory eating. Inmen, appetite-regulating hormones play a role …

Stem Exploration, Caitlyn Scott, Erin Case

Honors Program: Expanded Learning Clubs

After school club for middle school students consisting of individual and partner activities that will building teamwork and problem-solving skills. The club will also introduce the students to many different areas of STEM.

The Mythic World, Luci Anderson, Jaron Raj David Nallathambi

Honors Program: Expanded Learning Clubs

Lesson plans for a Middle School club on world mythology.

Stem Club Curriculum, Emily Hogg

Honors Program: Expanded Learning Clubs

No abstract provided.

Us Women In History Club, Savannah Toth, Elizabeth Herbin

Honors Program: Expanded Learning Clubs

An afterschool club that teaches children about women trailblazers from the past and today while integrating activities to demonstrate the importance of women outside of typical school curriculum and textbooks.

“Many People Have No Idea”: A Qualitative Analysis Of Healthcare Barriers Among Yazidi Refugees In The Midwestern United States, Falah N. Rashoka, Megan S. Kelley, Jeong‑Kyun Choi, Marc A. Garcia, Weiwen Chai, Hazim N. Rashawka

Department of Nutrition and Health Sciences: Faculty Publications

Background: The COVID-19 pandemic has shed new light on inequities in healthcare access faced by immigrant and refugee communities. To address ongoing disparities, there is an urgent need for ecological approaches to better understand the barriers that hinder and resources that facilitate access to healthcare. This study investigates barriers to healthcare system access faced by Yazidi refugees in the Midwestern United States.

Methods: Informed by the Interpretative Phenomenological Approach, three focus group meetings with a community advisory board were conducted between September 2019 and January 2020. The nine-member focus group included social workers, healthcare providers, and members of the Yazidi …

Nebline, January/February 2022

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

2021 Extension Highlights

Your Trusted Educational Resource

4-H Programs Engaged 24,313 Youth

A New Year, A New You, A Renewed Community by Emily Gratopp

Garden Guide: Things to Do This Month

Extension’s 2022 Master Gardener Training, Two Sites Available

Upcoming Green Industry Conferences

ProHort Lawn & Landscape Update

2022 Pesticide Applicator Trainings

Crop Production Clinics In-Person and Zoom

Heart of 4-H Volunteer Award: Phil Wharton and Jenny DeBuhr

Watch Chicks Hatch on Egg Cam

4-H Rabbit Show, March 19

Dog Club Accepting New Members, Starts Jan. 10

4-H Club Gives Youth With Special Needs Opportunity to Show Lambs

4-H Announcements …

Conserving Endangered Black-Footed Ferrets: Biological Threats, Political Challenges, And Lessons Learned, Travis M. Livieri, Steven C. Forrest, Marc R. Matchett, Stewart Breck

United States Department of Agriculture Wildlife Services: Staff Publications

There may be few stories in the annals of wildlife management that are as dramatic as the near demise and comeback of the black-footed ferret (Mustela nigripes). Endemic only to North America, this charming little carnivore found only in the continent’s central grasslands was hardly known to science until the mid-20th century. By then, vast colonies of the prey it depended on for food and shelter, the prairie dog (Cynomys spp.), had been wiped out through disease (sylvatic plague) and an agricultural industry with little tolerance for burrowing and grazing rodents. At its low point, the species’ …

Spatial Variability Of Silver Carp Population Demographics In A Large Tributary River, J. P. Werner, Q. J. Dean, Mark A. Pegg, M. J. Hamel

School of Natural Resources: Faculty Publications

No abstract provided.

An Evaluation Of Carbon Indicators Of Soil Health In Long-Term Agricultural Experiments, D. Liptzin, C. E. Norris, S. B. Cappellazzi, G. Macbean, Andrew E. Suyker Et Al.

School of Natural Resources: Faculty Publications

No abstract provided.

How Do Consumers’ Beliefs About Product Price, Taste, And Health Affect Attention To Health-Differentiated Product-Sets?, Henriette Gitungwa, Christopher R. Gustafson

Department of Agricultural Economics: Faculty Publications

Objectives: Consumers facemyriad food products in supermarkets, obviating consideration of all options. Consumers are likely to direct scarce attention to products they believe will provide them the best outcome. However, consumers may hold inaccurate beliefs— particularly about health attributes which can lead them to omit items from consideration that they would have optimally considered We examine how consumers’ beliefs about the relative price, taste, and healthiness of food product sets affect the healthiness of the set of products they consider.

Conclusions: Believes about relative differences in nutritional quality of foods importantly influence consideration of products, potentially perpetuating misconceptions about relative …

Metabolic Synergy Between Human Symbionts Bacteroides And Methanobrevibacter, Jennie L. Catlett, Sean Carr, Mikaela Cashman, Megan D. Smith, Mary Walter, Zahmeeth Sakkaff, Christine A. Kelley, Massimiliano Pierobon, Myra B. Cohen, Nicole R. Buan

Department of Biochemistry: Faculty Publications

ABSTRACT Trophic interactions between microbes are postulated to determine whether a host microbiome is healthy or causes predisposition to disease. Two abundant taxa, the Gram-negative heterotrophic bacterium Bacteroides thetaiotaomicron and the methanogenic archaeon Methanobrevibacter smithii, are proposed to have a synergistic metabolic relationship. Both organisms play vital roles in human gut health; B. thetaiotaomicron assists the host by fermenting dietary polysaccharides, whereas M. smithii consumes end-stage fermentation products and is hypothesized to relieve feedback inhibition of upstream microbes such as B. thetaiotaomicron. To study their metabolic interactions, we defined and optimized a coculture system and used software testing …

A Survey Of Insects Collected From Wild Flowering Plants At One Site In Michigan, Bryan W. Shields

Department of Entomology: Distance Master of Science Projects

The goal of this project was to document the wild flowering plants and the insect diversity present during a one season survey of an unmanaged habitat. Adult insects were collected from June to September 2020. A total of 58 families from 9 orders (Coleoptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera, Mantodea, Neuroptera, Odonata, Orthoptera) of insects were collected or observed. The insects collected were from multiple functional groups including: fungivores, herbivores, nectarivores, pollinavores, and predators. The type and number of insect orders as well as the number of functional groups suggests that insect diversity was attained at the time of this survey. …

Arginine Catabolism And Polyamine Biosynthesis Pathway Disparities Within Francisella Tularensis Subpopulations, Yinshi Yue, Bhanwar Lal Puniya, Tomáš Helikar, Benjamin Girardo, Steven H. Hinrichs, Marilyn A. Larson

Department of Biochemistry: Faculty Publications

Francisella tularensis is a highly infectious zoonotic pathogen with as few as 10 organisms causing tularemia, a disease that is fatal if untreated. Although F. tularensis subspecies tularensis (type A) and subspecies holarctica (type B) share over 99.5% average nucleotide identity, notable differences exist in genomic organization and pathogenicity. The type A clade has been further divided into subtypes A.I and A.II, with A.I strains being recognized as some of the most virulent bacterial pathogens known. In this study, we report on major disparities that exist between the F. tularensis subpopulations in arginine catabolism and subsequent polyamine biosynthesis. The genes …

Sew Zambia! Home Economics In Primary And Secondary Schools Of The Eastern And Southern Provinces, Clare Schinzel

UCARE: Research Products

Introduction: Home Economics (HE) is within the main curriculum for primary school students in Zambia, yet it remains unclear what is included.

Methods: Survey research conducted between May-June 2022 on 6-7th-grade students within 9 Zambian schools. Classroom observations were made, and teachers were interviewed in primary and secondary public schools.

Results: Most know how to cook and sew. Zambian women cook more than men and learn at an older age. Both males and females are trained to sew learning at a much younger age.

Discussion: HE remains critical to learning life skills in Zambia and the curriculum reflects skills related …

Annual Report: Nebraska Extension In Lancaster County, January 1, 2022 Through December 31, 2022

Lancaster County, Nebraska Extension: Reports

Lancaster County Extension information from 2022. Contents include:

1) About Extension - Lancaster County Extension mission statement, overview and impact reports;

2) Staff and Programs - staff directory and Extension Educator annual program summaries;

3) Financials - summaries of 2021-2022 budget expenditures and fiscal year 2022-2023 budget; and

4) Media - website and social media information, samples of our Nebline newsletter and local newspaper articles.

Barriers To Summer Food Service Program (Sfsp) Implementation Before And After Covid-19: A Qualitative, Collective Case Study, Masoomeh Hajizadeh Oghaz, Falah N. Rashoka, Megan S. Kelley

Department of Nutrition and Health Sciences: Faculty Publications

Objectives: SFSP, as a federal food assistance program, could ensure that children have sufficient nutritious food during summer. According to a 2016 USDA report, only 0.4–0.6% of eligible children participated in this program in Nebraska, which makes for one of the lowest SFSP participation rates in the U.S. This study aims to better understand how the COVID-19 pandemic has impacted SFSP implementation in urban and rural settings across the state.

Conclusions: Insights from this study may inform the development of policies that expand food access to vulnerable families. On the organizational level, this includes providing participating kids and their parents …

2022 Nebraska Beef Cattle Report

Nebraska Beef Cattle Reports

The purpose of beef cattle and beef product research at the University of Nebraska-Lincoln is to provide reference information that represents the various populations (cows, calves, heifers, feeders, carcasses, retail products, etc.) of beef production.

Dedicated in memory of Dr. Terry Klopfenstein (March 10, 1939-April 30, 2021), Professor Emeritus, Animal Science Department, University of Nebraska-Lincoln.

Cow-Calf Nutrition and Management

Impact of Cow Size on Economic Profitability in the Cow-Calf and Feedlot Production Systems

Comparison of Partially Confined and Traditional Cow-Calf Systems

Concepts in Stress Physiology

Inflammatory Modulators Improve Daily Gain of Heat-Stressed Wethers

Zilpaterol Supplementation Improved Indicators of Well-Being, but …

Impact Of Urea On Corn Silage Growing Cattle Diets, Tyler J. Spore, Hannah C. Wilson, Nolan R. Meier, Galen E. Erickson, James C. Macdonald, Terry J. Klopfenstein, Andrea K. Watson

Nebraska Beef Cattle Reports

Two experiments were conducted to evaluate the effects of increasing urea in a corn silage growing cattle diet and ensiling time impact on rumen undegradable protein content of corn silage. Four treatments (urea inclusion at 0, 0.5, 1, and 1.5% of diet dry matter) were evaluated in diets containing 95% corn silage using 10 ruminally and duodenally cannulated heifers. Corn silage was sampled 5 times (every 32 days) to determine rumen undegradable protein content. Intake and total tract digestibility of dry matter, organic matter, and neutral detergent fiber all increased linearly with increasing inclusion of urea in the diet. Measured …

Inflammatory Modulators Improve Daily Gain Of Heat-Stressed Wethers, Micah S. Most, Pablo C. Grijalva, Dustin T. Yates

Nebraska Beef Cattle Reports

Inflammation during heat stress may mediate poor growth in livestock. The effects of anti-imflammatory treatments on muscle growth during chronic heat stress were evaluated by using meat lambs as a smaller cheaper model for feedlot steers. Wethers were maintained in normal (75^oF) or heat stress (105^oF for 12 hours/day, 85^oF for 12 hours/day) environments for 30 days and received dexamethasone injections every 3 days, oral fish oil supplementation twice daily, or no intervention. Growth was tracked and muscles were weighed when harvested afterward. Dexamethasone and fish oil both increased average daily gain over the …

Economics Of Grazing Calves On Oats Planted After Corn Silage In Eastern Nebraska, Kallie J. Calus, Mckenna M. Brinton, Benjamin H. Hansen, Kristen M. Ulmer, Zachery E. Carlson, Fred H. Hilscher, M. E. Drewnoski, Jay Parsons, J. C. Macdonald

Nebraska Beef Cattle Reports

A five-year study (2015–2019) evaluated profitability of planting and grazing an oats cover crop after early harvested corn silage in eastern Nebraska. Oats were typically planted in the first week of September. Stocking rate ranged from 1.7 to 0.6 steers per acre and was based on oats biomass. Calves were turned out in early November each year and allowed to graze until oats biomass or weather limited intake. Grazing period ranged from 30 to 69 days. Average daily gain of calves ranged from 3.35 to 1.29 pounds with an average of 1.97 pounds. Shortened grazing seasons in some years were …

Building Community During Covid-19 And Beyond: How A Community Garden Strengthened An Honors Community, Steve Garrison

Honors in Practice Online Archive

Amid social distancing restrictions, community gardening becomes a focal point of one honors program. While providing fresh produce to the campus food pantry, this student-run initiative generates a new setting for experiential and service learning.

With the onset of the COVID-19 pandemic, honors programs across the U.S. struggled to maintain community as higher education moved largely to a virtual setting. Although this shift produced numerous innovations in creative programming, real social interaction greatly diminished. For young adults, social interaction is especially crucial to intellectual and social development, and with community as a key pillar of honors education, compensating for this …

Sheep & Goat Research Journal, Volume 37, 2022

Sheep and Goat Research Journal

Sheep & Goat Research Journal, Volume 37, 2022

Effect Of Health Aid On Life Expectancy In Sub-Saharan Africa, Sakiru Oladele Akinbode Dr., Isiaq O. Oseni

Journal for the Advancement of Developing Economies

No abstract provided.

The Effect Of Taste On Swallowing: A Scoping And Systematic Review, Rachel Mulheren, Ross M. Westemeyer, Angela M. Dietsch

Department of Special Education and Communication Disorders: Faculty Publications

Consuming foods and liquids for nutrition requires the coordination of several muscles. Swallowing is triggered and modified by sensory inputs from the aerodigestive tract. Taste has recently received attention as a potential modulator of swallowing physiology, function, and neural activation; additionally, taste impairment is a sequela of COVID-19. This review presents factors impacting taste and swallowing, systematically summarizes the existing literature, and assesses the quality of included studies. A search was conducted for original research including taste stimulation, deglutition-related measure(s), and human participants. Study design, independent and dependent variables, and participant characteristics were coded; included studies were assessed for quality …