The Medial Temporal Memory System In Down Syndrome: Translating Animal Models Of Hippocampal Compromise, Caron A.C. Clark, Fabian Fernandez, Stella Sakhon, Goffredina Spano, Jamie O. Edgin

Department of Educational Psychology: Faculty Publications

Recent studies have highlighted the dentate gyrus as a region of increased vulnerability in mouse models of Down syndrome (DS). It is unclear to what extent these findings are reflected in the memory profile of people with the condition. We developed a series of novel tasks to probe distinct medial temporal functions in children and young adults with DS, including object, spatial, and temporal order memory. Relative to mental age-matched controls (n=45), individuals with DS (n=28) were unimpaired on subtests involving short-term object or configural recall that was divorced from spatial or temporal contexts. By contrast, …

Device Development For Long-Term Systemic Oral Biologic Drug Delivery, Benjamin Wankum

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

A biologic drug is a drug that is produced by a living organism. Biologic drugs are used to treat various medical conditions such as arthritis, diabetes, or certain forms of cancers due to their high potency and high selectivity of action. Drawbacks of biologics include their poor stability in the gastrointestinal tract and their poor absorption. In effect, this gives the drugs very low bioavailability and short therapeutic half-lives. To combat these obstacles, current delivery methods include subcutaneous injections at home or intravenous or intramuscular injections in a medical facility.

The overall scientific goal of the research was to utilize …

After-Action Reviews, Megan Paul

Umbrella Summaries

What are after-action reviews?

An after-action review (AAR) is “a systematic technique that turns a recent event into a learning opportunity through a combination of task feedback, reflection, and discussion” (Keiser & Arthur, 2020, p. 2). The process has been used in various fields, leading to a variety of labels, including after-event review, debrief, guided team self-correction, and reflexivity (e.g., Chen et al., 2018; Couper et al., 2013; Ellis & Davidi, 2005; Smith-Jentsch et al., 2008). Note that though the term “debrief” is sometimes used, AARs are distinct from debriefing sessions that are intended to help individuals process stressful or …

Spirals And Skyrmions In Antiferromagnetic Triangular Lattices, Wuzhang Fang, Aldo Raeliarijaona, Po-Hao Chang, Alexey Kovalev, Kirill Belashchenko

Department of Physics and Astronomy: Faculty Publications

We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material realization, we investigate the adsorption of transition-metal atoms (Cr, Mn, Fe, or Co) on a monolayer of MoS2, WS2, or WSe2 and obtain the exchange, anisotropy, and Dzyaloshinskii-Moriya interaction parameters using first-principles calculations. Using energy minimization and parallel-tempering Monte Carlo simulations, we determine the magnetic phase diagrams for a wide range of interaction parameters. We find that skyrmion lattices can appear even with weak Dzyaloshinskii-Moriya interactions, but their stability is hindered by magnetic anisotropy. However, a weak easy …

Model Counting Meets F0 Estimation, A. Pavan, N. V. Vinodchandran, Arnab Bhattacharyya, Kuldeep S. Meel

School of Computing: Faculty Publications

Constraint satisfaction problems (CSP’s) and data stream models are two powerful abstractions to capture a wide variety of problems arising in different domains of computer science. Developments in the two communities have mostly occurred independently and with little interaction between them. In this work, we seek to investigate whether bridging the seeming communication gap between the two communities may pave the way to richer fundamental insights. To this end, we focus on two foundational problems: model counting for CSP’s and computation of zeroth frequency moments (F₀) for data streams.

Our investigations lead us to observe striking similarity …

Modernizing Legacy Business Practices And Maintaining Backwards Compatibility When Replacing Legacy Software, Thomas Hillebrandt

Honors Program: Senior Projects (Public)

As technology advances and hardware as well as user expectations becomes more advanced, software systems must change alongside or go obsolete. When software is no longer developed, decisions must be made regarding its future. Through various methods, legacy software may continue to see usage far past its obsolescence, however legacy software will sooner or later face replacement by new applications, built for state-of-the-art machines, to comply with modern requirements. When writing new software to replace older programs, the added challenge for developers is to help the client also modernize their workflow. When a program has been in long time use …

Strain And Host-Cell Dependent Role Of Type-1 Fimbriae In The Adherence Phenotype Of Super-Shed Escherichia Coli O157:H7, Robab Katani, Indira T. Kudva, Sreenidhi Srinivasan, Judith B. Stasko, Megan Schilling, Lingling Li, Rebecca Cote, Chitrita Debroy, Terrance M. Arthur, Evgeni V. Sokurenko, Vivek Kapur

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

Super-shed (SS) Escherichia coli O157 (E. coli O157) demonstrate a strong, aggregative, locus of enterocyte effacement (LEE)-independent adherence phenotype on bovine recto-anal junction squamous epithelial (RSE) cells, and harbor polymorphisms in non-LEE-adherence-related loci, including in the type 1 fimbriae operon. To elucidate the role of type 1 fimbriae in strain- and host-specific adherence, we evaluated the entire Fim operon (FimB-H) and its adhesion (FimH) deletion mutants in four E. coli O157 strains, SS17, SS52, SS77 and EDL933, and evaluated the adherence phenotype in bovine RSE and human HEp-2 adherence assays. Consistent with the prevailing dogma that fimH expression is genetically …

Voltage-Controlled Magnetic Anisotropy In Antiferromagnetic Mgo-Capped Mnpt Films, P. H. Chang, Wuzhang Fang, T. Ozaki, Kirill Belashchenko

Kirill Belashchenko Publications

The magnetic anisotropy in MgO-capped MnPt films and its voltage control are studied using first-principles calculations. Sharp variation of the magnetic anisotropy with film thickness, especially in the Pt-terminated film, suggests that it may be widely tuned by adjusting the film thickness. In thick films the linear voltage control coefficient is as large as 1.5 and -0.6 pJ/Vm for Pt-terminated and Mn-terminated interfaces, respectively. The combination of a widely tunable magnetic anisotropy energy and a large voltage-control coefficient suggest that MgO-capped MnPt films can serve as a versatile platform for magnetic memory and antiferromagnonic applications.

Nebline, May 2021

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Building Health Equity in Lincoln: Extension Launches Health Equity Coalition

Recipe of the Month

Intensive Gardening Techniques

Garden Guide Things to Do This Month

Naturally Occurring Elements in Groundwater--Part 3 of a Series — Fluoride

Cash Rent Survey

Preparing for the Inevitable: Japanese Beetles

Challenge Accepted! Children Thrive Outside

Heart of 4-H Volunteer Award: Rusty & Heidi Hanley

4-H Announcements for 4-H'ers and Volunteers

Clover College: June 15–18, 2021

EXTENSION CALENDAR

4-H’ers Qualify for State Speech & PSA Contest

4-H Horse Stampede Results

The Experts Speak: A New Feature In The Jicr, Michael Gale, Ram Savan, Adolfo Garcia-Sastre, Ludmila Prokunina-Olsso, Kuppusamy Balamurugan, Howard A. Young

United States Public Health Resources

This month we launch a new feature in the JICR: The Experts Speak. This feature is designed to provide first-hand insight from topical experts in the fields of interferon, cytokines, innate immunity, and adaptive immune actions of cytokine biology in disease. We start by asking experts to comment on interferon, cytokines, and SARS-CoV-2.

Field Demonstration Of Gpr And Uav Technologies For Evaluation Of Two Us 75/77 Bridges, Sepehr Pashoutani, Jinying Zhu, Chungwook Sim, Ji-Yong Lee

Nebraska Department of Transportation: Research Reports

Two Nebraska bridges with asphalt overlay were selected for nondestructive testing and evaluation (NDT/NDE). Three NDT techniques were conducted on these two bridges, including Ground Penetrating Radar (GPR), Half-Cell Potential (HCP) and Unmanned Aerial Vehicle (UAV) imaging. NDT data were collected during three construction stages of the bridges: (1) before repair on existing asphalt overlay; (2) on bare concrete after asphalt removal; (3) and after repairing delaminated concrete.

A machine learning technique, autoencoder, was used to build quantitative relationships between different NDT datasets. On bare concrete, the GPR amplitude and HCP voltage show a strong linear relationship. Then a threshold …

Arbor Day Foundation Programs: Analysis And Recommendations, Justin Myers, Emily Alston, Cameron Claborn, Charles Erker, Braelyn Isernhagen, Jonathan Jameson

Honors Program: Senior Projects (Public)

We are proposing the enhancement of the current Tree City USA program to include a special recognition program for high-achieving communities. These “Golden Oak” tree cities will be recognized each year based on a variety of metrics detailed in a new and more comprehensive program application. Recommendations:

● Updated application to include more information about both quantitative and qualitative insights

● Special recognition program awarding “Golden Oak” status to communities in village, town, city, and metropolis categories based on either percentile or benchmarking system

● A cumulative “Golden Oak” award given to the State that achieves the highest percentage of …

Data Quality (Video), Quality Improvement Center For Workforce Development

Workforce Analytics Resources

Data-driven decisions cannot be effective if they are based on poor-quality data. Thus, it is important to ensure that any data that will be used for workforce analytics are accurate and can be trusted.

Data Quality Criteria

There are many potential data quality criteria to consider. Below are 9 selected criteria that are relevant for workforce data. If there are others that are also important to you, they should be included as well. These questions should be asked of every variable for which data are collected.

1. Relevance: Are the data useful and relevant for business needs?
2. Granularity: Are the data …

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. …

Bright Star: A Scenic Design, Marty Wolff

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 that document the scenic design for Midland University’s production of the 2014 musical Bright Star, written and composed by Steve Martin and Edie Brickell. This thesis contains the following: the effects of COVID 19 on the production selection process; a conceptual analysis, scenic breakdown, charting and diagrams to organize the show, preliminary modeling and plotting imagery; research images of the Blue Ridge Mountains and Appalachia, mountain cabins from the early 1900s, and various rustic landscapes; an examination of the design evolution from conception to …

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 …

“The Revolution Will Not Be Supervised": An Investigation Of The Efficacy And Reasoning Process Of Self-Supervised Representations, Atharva Tendle

School of Computing: Dissertations, Theses, and Student Research

Transfer learning technique enables training Deep Learning (DL) models in a data-efficient way for solving computer vision tasks. It involves pretraining a DL model to learn representations from a large and general-purpose source dataset, then fine-tuning the model using the task-specific target dataset. The dominant supervised learning (SL) approach for pretraining representations suffers from some limitations that include expensive labeling and poor generalizability. Recent advancements in the self-supervised learning (SSL) approach made it possible to learn effective representations from unlabeled data. The performance of the fine-tuned DL models based on pretrained SSL representations is on par with the state-of-the-art pretrained …

Keeping The Child In Mind: A Mixed Methods Study Of Reflections On Parenting Among Families In Shelter, Ann Matthews

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

Homelessness among families is a growing problem across the United States (Beard, 2020). Homelessness is associated with stressful and impoverished caregiving environments that contribute to problematic parent-child relationships and increase children’s risks for poor health and academic outcomes (e.g., Perlman et al., 2012).

Responsive caregiving may protect children from adverse outcomes and foster resilience during periods of homelessness (Labella et al., 2019; Miliotis et al., 1999; Perlman et al., 2012). A parent’s capacity to understand their own and their child’s behavior as a function of internal mental states supports such responsive caregiving (e.g., Fonagy & Target, 1997; Slade, 2005) and …

Attachment Injury-Related Responses From The Offending Partner And Forgiveness In Romantic Relationships, Shruti Pillai

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

Attachment injuries in romantic relationships carry the potential for several negative outcomes for the injured partner, the offending partner, and the relationship. Forgiveness can serve to repair the damage caused by such an injury. The concept of forgiveness, however, has predominantly only been studied as the responsibility of and of primary interest to the injured partner. There is a growing need for closer examination of what the offending partner can do to promote forgiveness. The Attachment Injury Resolution Model (AIRM) proposes eight distinct steps including actions for each partner that can lead a couple towards recovery. This study examined the …

Out-Of-Plane Behavior Of Concrete Insulated Wall Panels With 2-Inch, 8-Inch, And 10-Inch Insulation, Jacob Luebke

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

Insulated concrete sandwich wall panels provide structurally and thermally efficient building envelopes and are becoming more popular as energy regulations tighten. To continually adapt to an ever-changing building market and new energy regulations, insulated concrete wall panels are being constructed with thinner wythes, thicker insulation, and relying on partial composite action to decrease material costs and increase thermal and structural efficiency. Numerous methods of the design of partially composite insulated concrete sandwich wall panels have been introduced in recent decades and have been verified by comparing their results to existing experimental testing. Existing testing data for insulated concrete sandwich wall …

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 …

Characterizing The Susceptibility And Biological Fitness Of Nebraska Western Corn Rootworm Populations To Pyramided Plant-Incorporated Protectants, Jordan D. Reinders

Department of Entomology: Dissertations, Theses, and Student Research

The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is a pest of field corn, Zea mays L., across the United States (U.S.) Corn Belt. Transgenic corn expressing two or more insecticidal proteins (‘pyramid’) derived from Bacillus thuringiensis Berliner (Bt) is a common management strategy employed in areas of continuous corn production. The newest rootworm-Bt pyramid registered in the U.S. is SmartStax^® PRO, which contains two rootworm-Bt proteins (Cry3Bb1, Cry34/35Ab1) and DvSnf7 dsRNA. With the pending commercialization of SmartStax^® PRO, understanding the current susceptibility of Nebraska WCR populations to the Cry3Bb1 + Cry34/35Ab1 pyramid (SmartStax^®) and …

Position: A Fiction Collection, Joelle Byars

Department of English: Dissertations, Theses, and Student Research

The creative thesis “Position: A Fiction Collection” is composed of sixteen short and flash fiction stories. The critical introduction to this thesis looks at my journey as a writer that led to its genesis. I analyze the methods used in my writing process, consider the ways in which instruction and passive reading influences what drives me to write, as well as delving into how the personal informs the creative. I discuss the themes of my stories, gender, sexuality, socio-economic class, toxic relationships, and mental illness, and how they emerged in this collection. A creative sample that touches on all of …

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 …

Metacognitive Function In Moderate To Severe Traumatic Brain Injury, Grace Amadon

Honors Program: Senior Projects (Public)

Traumatic brain injury (TBI) is an injury to the brain caused by a bump, blow, jolt to the head. Individuals with TBI demonstrate decreased awareness of their own potential deficits and functional abilities. These deficits have critical implications for recovery as self-awareness is important for those recovering from TBI in the implementation and engagement of rehabilitative processes after TBI. The following study analyzed 18 individuals with TBI approximately 11 years post injury to document metacognitive functioning after injury. Participants completed a metacognitive working-memory paradigm where they made judgements of their future and past performance on identifying a target shape and …

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 …

The Effect Of Anionic Surfactants On Herbicide Mixtures And Solutions, Ely Daniel Anderson

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

Herbicide mixtures are popular for farmers to delay the evolution of herbicide-resistant biotypes from occurring and control existing herbicide-resistant weeds. Glufosinate is a contact herbicide that has been observed as a mixture partner with many herbicides. In many cases, antagonistic interactions have occurred when using glufosinate in mixture with other herbicides. The antagonistic interactions have resulted in applications with incomplete weed control. Adjuvants have been known to impact an herbicide application by increasing herbicide penetration, spreadability, and efficacy. Adjuvants added to glufosinate mixtures can impact spray applications and increase weed control. The objectives of this research were: (1) investigate the …

Evaluating Asct Operations For Dodge Street Corridor, Anuj Sharma, Subhadipto Poddar, Atousa Zarindast, Christopher Day

Nebraska Department of Transportation: Research Reports

As Adaptive Traffic Control (ATC) is increasingly being implemented by various traffic agencies, careful evaluation is needed of the degree to which a given ATC implementation improves traffic signal performance. The present study details the evaluation of ATC for two arterial corridors in the City of Omaha, Nebraska. Several performance measures were used across two stages of ATC implementation as well as during the unanticipated COVID-19 lockdown stage.

The average travel time and variability in travel time showed that Stage 1 of ATC implementation in Omaha did not improve traffic signal performance for the study’s main corridor, Dodge Street. This …

The Effect Of Agkistrodon Contortrix And Crotalus Horridus Venom Toxicity On Strike Locations With Live Prey., Chase Giese

Honors Program: Senior Projects (Public)

This paper aims to uncover if there is a significant difference in the strike location of snake species that have different values of LD50% venom. It is thought that most snakes strike their prey in the anterior (head) area in order for their venom to work quicker in killing them. Venom toxicity is measured by its LD50% value, which is the amount of venom, in mg/kg, to kill 50% of a test population. The Copperhead has an LD50% value of 10.9 mg/kg, and the Timber Rattlesnake has an LD50% value of 1.64 mg/kg. The hypothesis was that if venom toxicity …

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 …