Digital Commons Network^™

Southeast Asia Must Narrow Down The Yield Gap To Continue To Be A Major Rice Bowl, Shen Yuan, Alexander M. Stuart, Alice G. Laborte, Juan I. Rattalino Edreira, Achim Dobermann, Le Vu Ngoc Kien, Lưu Thị Thúy, Kritkamol Paothong, Prachya Traesang, Khin Myo Tint, Su Su San, Marcelino Q. Villafuerte Ii, Emma D. Quicho, Anny Ruth P. Pame, Rathmuny Then, Rica Joy Flor, Neak Thon, Fahmuddin Agus, Nurwulan Agustiani, Nanyan Deng, Tao Li, Patricio Grassini

Department of Agronomy and Horticulture: Faculty Publications

Southeast Asia is a major rice-producing region with a high level of internal consumption and accounting for 40% of global rice exports. Limited land resources, climate change and yield stagnation during recent years have once again raised concerns about the capacity of the region to remain as a large net exporter. Here we use a modelling approach to map rice yield gaps and assess production potential and net exports by 2040. We find that the average yield gap represents 48% of the yield potential estimate for the region, but there are substantial differences among countries. Exploitable yield gaps are relatively …

The Public’S Preferences In Supreme Court Rationale, William Svob

Honors Program: Senior Projects (Public)

Public approval of the Supreme Court has been decreasing in recent years. Given the literature’s consensus that Supreme Court rulings coincide with popular opinion more often than not, the decrease in popularity cannot be explained away by assuming the justices have made a series of widely despised rulings. This raises questions about what exactly the public wants the Supreme Court to do. There is an abundance of research covering the many factors that influence a justice to rule in a particular manner, but there is little written about what the average American believes should influence the Court. This study is …

Ecological And Social Strategies For Managing Fisheries Using The Resist-Accept- Direct (Rad) Framework, Abigail J. Lynch, Frank J. Rahel, Doug Limpinsel, Suresh A. Sethi, Augustin C. Engman, David J. Lawrence, Katherine E. Mills, Wendy Morrison, Jay Jay Peterson, Mark T. Porath

United States Fish and Wildlife Service: Publications

Fisheries management is a complex task made even more challenging by rapid and unprecedented socioecological transformations associated with climate change. The Resist-Accept- Direct (RAD) framework can be a useful tool to support fisheries management in facing the high uncertainty and variability associated with aquatic ecosystem transformations. Here, RAD strategies are presented to address ecological goals for aquatic ecosystems and social goals for fisheries. These strategies are mapped on a controllability matrix which explores the ability to guide a system's behaviour towards a desired state based on ecological responsiveness and societal receptivity to change. Understanding and improving the controllability of aquatic …

Investigation Of Students’ Understanding Of Light Matter Interactions In A Chemistry Context, Archer Harrold

Honors Program: Senior Projects (Public)

Students’ have varying levels of understanding of light matter interactions in chemistry contexts. This study investigated students’ understanding through the use of semi-structured interviews and PhEt simulations of both the single slit and double slit experiments. Coding qualitative analysis and construct maps were used to assign students to specific levels of sophistication. It was found that students’ carry differing levels of understanding of light and light matter interactions where low level learners struggled to connect ideas in their explanations while high level learners had strong connections between their knowledge and explanations.

Queueing Theory Model Of Pentose Phosphate Pathway, Sylwester M. Kloska, Krzysztof Pałczyński, Tomasz Marciniak, Tomasz Talaśka, Marissa Miller, Beata J. Wysocki, Paul H. Davis, Tadeusz A. Wysocki

Department of Electrical and Computer Engineering: Faculty Publications

Due to its role in maintaining the proper functioning of the cell, the pentose phosphate pathway (PPP) is one of the most important metabolic pathways. It is responsible for regulating the concentration of simple sugars and provides precursors for the synthesis of amino acids and nucleotides. In addition, it plays a critical role in maintaining an adequate level of NADPH, which is necessary for the cell to fight oxidative stress. These reasons prompted the authors to develop a computational model, based on queueing theory, capable of simulating changes in PPP metabolites’ concentrations. The model has been validated with empirical data …

Protocol To Engineer Nanofilms Embedded Lipid Nanoparticles For Controlled And Targeted Drug Delivery (Nectar), Rashi Porwal, Stephen L. Hayward, Srivatsan Kidambi

Department of Chemical and Biomolecular Engineering: Faculty Publications

We present a protocol to engineer a substrate-mediated delivery platform comprising hyaluronic acid-coated lipid nanoparticles (HALNPs) embedded into polyelectrolyte multilayer (PEM) films. This platform allows controlled spatiotemporal release of lipid nanoparticles (LNP) by embedding them within the polyelectrolyte multilayer films matrix. HALNP conjugate with antibodies also adds the ability for targeted delivery. The use of LNP enables this platform to encapsulate both hydrophobic and hydrophilic drugs. This platform can easily be reproduced and utilized for various biomedical drug delivery applications. For complete details on the use and execution of this protocol, please refer to Hayward et al. (2015, 2016a, 2016b), …

The Broadband Mapping Challenge: An Overview Of Rural Broadband Status And Policy Solutions For Nebraska, Payton Flower

Honors Program: Senior Projects (Public)

Broadband, the availability of high-speed internet service for the transmission of electronic data, it is a critical component in the daily life of Americans. However, there is significant disparity in the United States between urban and rural areas in regard to broadband availability and adoption. This issue has created what is known as the “digital divide”, a situation in which lower income, rural residents, and those living on tribal lands are most severely impacted by limited broadband services. “Broadband Mapping” refers to a data collection process that is primarily overseen by the Federal Communications Commission. Unfortunately, a variety of flaws …

A Documentation Of A Year As An Artistic Director For Unl, Philip Crawford

Honors Program: Senior Projects (Public)

The goal of this project was to document a year of being an Artistic Director for UNL’s student run theatre company Theatrix. Through this documentation, I will be able to reflect upon and learn from my experiences as a leader, director, and theatre maker.

This thesis will be broken up into eight different parts to outline the eight different stages I experienced as Artistic Director this year: season selection, the 24-hour Play Festival, The Revolutionists, The Thanksgiving Play, Clown Bar, season changes, Based on a Totally True Story, and Lemons, Lemons, Lemons, Lemons, Lemons. Through these eight stages, I will …

Split Classification Model For Complex Clustered Data, Katherine Gerot

Honors Program: Senior Projects (Public)

Classification in high-dimensional data has generated tremendous interest in a multitude of fields. Data in higher dimensions often tend to reside in non-Euclidean metric space. This prevents Euclidean-based classification methodologies, such as regression, from reliably modeling the data. Many proposed models rely on computationally-complex embedding to convert the data to a more usable format. Others, namely the Support Vector Machine, rely on kernel manipulation to implicitly describe the "feature space" to arrive at a non-linear decision boundary. The proposed methodology in this paper seeks to classify complex data in a relatively computationally-simple and explainable manner.

A Qualitative Analysis Of How Individuals Utilized The Twitter Hashtags #Notokay And #Metoo To Comment On The Perpetration Of Interpersonal Violence, Katherine W. Bogen, Prachi H. Bhuptani, Michelle Haikalis, Lindsay M. Orchowski

Department of Psychology: Faculty Publications

The present study examined how individuals describe the nature of interpersonal violence perpetrated against them using the Twitter hashtags #NotOkay and #MeToo. Iterative qualitative coding of 437 tweets resulted in four major themes (i.e., the nature of violence and tactics utilized, the identity of the perpetrator, the location of the assault, and whether the perpetrator was held accountable). Subthemes nested beneath perpetrator identity included whether the perpetrator was known, as well as perpetrator gender identity. Subthemes nested beneath perpetrator tactic included the presence of multiple perpetrators, whether the assault was a crime of opportunity, engagement in physical aggression, utilization of …

Pitfalls And Guidelines For Using Time-Based Git Data, Samuel W. Flint, Jigyasa Chauhan, Robert Dyer

School of Computing: Faculty Publications

Many software engineering research papers rely on time-based data (e.g., commit timestamps, issue report creation/update/close dates, release dates). Like most real-world data however, time-based data is often dirty. To date, there are no studies that quantify how frequently such data is used by the software engineering research community, or investigate sources of and quantify how often such data is dirty. Depending on the research task and method used, including such dirty data could affect the research results. This paper presents an extended survey of papers that utilize time-based data, published in the Mining Software Repositories (MSR) conference series. Out of …

Greater Numbers Of Antral Follicles In The Ovary Are Associated With Increased Concentrations Of Glucose In Uterine Luminal Fluid Of Beef Heifers, Alexandria P. Snider, Matthew S. Crouse, Shelby L. Rosasco, Kaitlin M. Epperson, Emmalee J. Northrop-Albrecht, Jerica J.J. Rich, Chadwick C. Chase Jr., Jeremy R. Miles, George A. Perry, Adam F. Summers, Robert A. Cushman

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

Increased antral follicles are associated with greater fertility and a uterine environment that is more supportive of early embryonic development in beef heifers. Glucose is a primary energy source for embryos, and glucose concentrations are elevated in uterine luminal fluid (ULF) of pregnant heifers. We hypothesized that ULF glucose concentrations and endometrial transcript abundance for glucose transporters on d16 after insemination would be greater in heifers with increased numbers of antral follicles. Heifers classified with either increased or diminished antral follicle counts were artificially inseminated following the CO-Synch protocol (d0). On d16 after insemination, reproductive tracts of heifers were collected …

Creation Of An Influenza A Virus Neuraminidase Consensus Vaccine In An Adenoviral Vector, Leigh Jahnke

Honors Program: Senior Projects (Public)

In the last decade, the estimated annual burden of the flu includes 12,000-52,000 deaths, 140,000-710,000 hospitalizations, and 9 million – 41 million illnesses (Centers for Disease Control and Prevention: Disease burden of the flu). Influenza A virus can mutate and infect a variety of different hosts, which results in frequent antigenic changes and even pandemics. This has led to increased attention on the creation of a universal Influenza A vaccine containing broader immunogenic coverage than current vaccines. Our research involved detailing the steps of the cloning process utilizing a consensus neuraminidase antigen. We utilized the pAdEasy Adenoviral Vector …

Predicting Autism From Infant Characteristics: A Systematic Review, Alysha Y. Henrichs, Cynthia Cress Ph.D.

Honors Program: Senior Projects (Public)

A literature review was conducted of 73 articles to explore 12-month-old characteristics in infants that predicted later diagnosis with autism (ASD). Articles were reviewed if they discussed ASD, infants with siblings diagnosed with autism (high-risk) and/or infants later diagnosed with autism without known family history of ASD (low risk). Articles were not reviewed if the participants were 36 months or older at the start of the study. More factors were identified that discriminate characteristics associated with later ASD diagnosis in infants between 12-24 months compared to characteristics of infants below 12 months. Characteristics of infants under 12 months that were …

Canopy Spectral Reflectance Detects Oak Wilt At The Landscape Scale Using Phylogenetic Discrimination, Gerard Sapes, Cathleen Lapadat, Anna K. Schweiger, Jennifer Juzwik, Rebecca Montgomery, Hamed Gholizadeh, Philip A. Townsend, John A. Gamon, Jeannine Cavender-Bares

School of Natural Resources: Faculty Publications

The oak wilt disease caused by the invasive fungal pathogen Bretziella fagacearum is one of the greatest threats to oak-dominated forests across the Eastern United States. Accurate detection and monitoring over large areas are necessary for management activities to effectively mitigate and prevent the spread of oak wilt. Canopy spectral reflectance contains both phylogenetic and physiological information across the visible near-infrared (VNIR) and short-wave infrared (SWIR) ranges that can be used to identify diseased red oaks. We develop partial least square discriminant analysis (PLS-DA) models using airborne hyperspectral reflectance to detect diseased canopies and assess the importance of VNIR, SWIR, …

Legislative Bill 519: Creating And Lobbying For Original Legislation, Brooklyn Terrill

Honors Program: Senior Projects (Public)

This project reflects the process of writing and attempting to pass state legislation, Legislative Bill 519, as a college student. LB 519 is an immunity policy for certain drug and alcohol charges that would be potentially prohibitive to a survivor or witness of sexual assault reporting the crime. The first several sections cover the process of developing and introducing legislation. These sections cover the process of developing the idea for LB 519 and the thought process behind the language and structure of the bill. It then covers the advocacy portion of passing a bill which includes testifying and lobbying for …

Development Of Controller Area Network Bus Programming For Quarter-Scale Tractor Pulling Sled, Brittani Wacker

Honors Program: Senior Projects (Public)

Usage of Controller Area Network (CAN) technology has allowed for advancements in many industries, including agriculture. Most importantly, its application is useful for refining data acquisition methods. With support from the Quarter-scale Tractor Design Team at UNL, this project united a CAN bus with the team’s current tractor pulling sled. The objectives were to install new instrumentation needed for the CAN bus and to program the updated system utilizing CAN data. The program needed to give the pulling sled functionality and the ability to read and log important pulling data. These goals were all accomplished by implementing new sensors, coding …

Search For Strongly Interacting Massive Particles Generating Trackless Jets In Proton–Proton Collisions At √S = 13tev, A. Tumasyan

Department of Physics and Astronomy: Faculty Publications

A search for dark matter in the form of strongly interacting massive particles (SIMPs) using the CMS detector at the LHC is presented. The SIMPs would be produced in pairs that manifest themselves as pairs of jets without tracks. The energy fraction of jets carried by charged particles is used as a key discriminator to suppress efficiently the large multijet background, and the remaining background is estimated directly from data. The search is performed using proton–proton collision data corresponding to an integrated luminosity of 16.1 fb⁻¹, collected with the CMS detector in 2016. No significant excess of events …

Understanding Queer Women’S Satisfaction With Healthcare Providers: The Role Of Positive Lgb Identity And Communication, Maddie Luebe

Honors Program: Senior Projects (Public)

Much research has explored the negative effects of having a queer identity in healthcare, such as stigmatization and discrimination, but little research examined the potential benefits of a positive LGBTQ identity in healthcare. This study investigated the relationship between having a positive LGBTQ identity and provider satisfaction through comfort communicating with a provider. This study also considered the potential effect of participants’ fear of provider heterosexism in this relationship. Survey data were collected from 506 queer-identified women in the United States. Using moderated mediation, results found that more positive feelings associated with one’s queer identity was associated with increased comfort …

Resource Selection Of Deer Hunters In Georgia's Appalachian Mountains, Jacalyn P. Rosenberger, Andrew R. Little, Adam C. Edge, Cheyenne J. Yates, David A. Osborn, Charlie H. Killmaster, Kristina L. Johannsen, Karl V. Miller, Gino J. D'Angelo

School of Natural Resources: Faculty Publications

White‐tailed deer (Odocoileus virginianus) and hunters on 2 Wildlife Management Areas (WMAs) within the Chattahoochee National Forest of northern Georgia, USA, significantly declined in number from the 1980s to 2018. Managers were interested in understanding how they could manipulate hunter distribution according to deer management goals. To understand the spatial distribution of hunting pressure and factors driving hunter resource selection, we analyzed GPS tracking data from 58 deer hunters over the 2018–2019 and 2019–2020 hunting seasons. We evaluated hunter selection on 3 spatial scales relative to elevation, slope, and distance from roads, trails, wildlife openings, deciduous forest, mixed …

Design Of A Week-Long Introduction To Engineering Summer Camp To Increase Interest And Eagerness Of Stem In Young Children, Beth Cannon

Honors Program: Senior Projects (Public)

For this creative project, a one-week camp curriculum was designed for elementary students (Grades 3-5) to introduce engineering. This work includes a rationale and camp curriculum. The rationale describes the research-based design of the curriculum. It outlines engineering basics and why and how to teach engineering to young students. The curriculum intends to introduce engineering to young children and excite the possibility of a future career. The following engineering disciplines are presented throughout the week of camp: mechanical, environmental, civil, electrical, and chemical. The first day of camp focuses on the basics of engineering. Following that, each day of camp …

Educating Elementary Students About Nutrition: An After-School Club Curriculum, Morgan Gurwell

Honors Program: Senior Projects (Public)

This creative project was created to serve as a 10-week afterschool club curriculum for 3rd-5th graders to teach them about nutrition and healthy eating patterns. The goal of the program is to help kids establish a foundation for healthy eating that they can utilize throughout their lives, potentially reducing their risk of developing chronic diseases as an adult. Information presented during the program is a representation of the key components of the USDA MyPlate and the 2020-2025 Dietary Guidelines for Americans. The curriculum aims to teach these concepts by breaking down the different food groups, reading nutrition facts labels, and …

Proteomic Analyses Identify Differences Between Bovine Epididymal And Ejaculated Spermatozoa That Contribute To Longevity, Saulo Menegatti Zoca, Emmalee J. Northrop-Albrecht, Julie A. Walker, Robert A. Cushman, George A. Perry

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

Sperm are stored for extended periods of time in the epididymis, but upon ejaculation motility is increased and lifespan is decreased. The objective of this study was to identify differences in proteins between epididymis and ejaculated samples that are associated with longevity. Ejaculated semen was collected from mature Angus bulls (n = 9); bulls were slaughtered and epididymal semen was collected. Epididymal and ejaculated semen were centrifuged to separate sperm and fluid. Fluids were removed and sperm pellets were resuspended in a high ionic solution and vortexed to remove loosely attached proteins. Sperm samples were centrifuged, and the supernatant was …

A Daughter Of The Samurai, Etsu Inagaki Sugimoto

Zea E-Books Collection

Born in 1874 the youngest daughter of a samurai and former daimyo—a feudal prince under the Takugawa shogunate—Etsu Inagaki grew up surrounded by ghosts of an aristocratic military lineage. Having fought on the losing side in the wars that installed the Meiji emperor, the ­Inagaki family was reduced in power, status, and wealth but not in pride or ­devotion to its traditional roles and customs. Etsu’s upbringing and education were conservative and old-fashioned, guided by the Shinto and Buddhist beliefs her family held. The samurai virtues of honor, ­stoicism, and sacrifice applied to daughters and wives as well as sons …

Instructional Models For Course-Based Research Experience (Cre) Teaching, David I. Hanauer, Mark J. Graham, Rachel J. Arnold, Mary A. Ayuk, Mitchell F. Balish, Andrea R. Beyer, Kristen A. Butela, Christine A. Byrum, Catherine P. Chia, Hui Min Chung, Kari L. Clase, Stephanie Conant, Roy J. Coomans, Tom D'Elia, Jason Diaz, Arturo Diaz, Jean A. Doty, Nicholas P. Edgington, Dustin C. Edwards, Elvira Eivazova, Christine B. Emmons, Kayla M. Fast, Viknesh Sivanathan, And About 50 Others

School of Biological Sciences: Faculty Publications

The course-based research experience (CRE) with its documented educational benefits is increasingly being implemented in science, technology, engineering, and mathematics education. This article reports on a study that was done over a period of 3 years to explicate the instructional processes involved in teaching an undergraduate CRE. One hundred and two instructors from the established and large multi-institutional SEA-PHAGES program were surveyed for their understanding of the aims and practices of CRE teaching. This was followed by large-scale feedback sessions with the cohort of instructors at the annual SEA Faculty Meeting and subsequently with a small focus group of expert …

Self-Compassion Mediates The Link Between Attachment Security And Intimate Relationship Quality For Couples Navigating Pregnancy, Tuyen Huynh, Eric Phillips, Rebecca L. Brock

Department of Psychology: Faculty Publications

Millions of couples navigate the transition from pregnancy to postpartum in a given year, and this period of change and adjustment in the family is associated with elevated risk for intimate relationship dysfunction. Self-compassion has the potential to promote skills that are essential for healthy adaptation (e.g., emotion regulation, greater openness and flexibility, more awareness of the needs of oneself and one’s partner). The overarching goal of the present study was to investigate the role of self-compassion in intimate relationship quality during pregnancy. A sample of 159 couples completed semi-structured interviews and questionnaires. Parents engaging in more compassionate self-responding during …

Toward The Understanding Of The 2018 Arnold, Ne Earthquake Cluster: Relocation Of Hypocenters And Establishment Of New Gravity Base Stations, Kris Guthrie

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

In 2018, 27 unexpected earthquakes occurred in central Nebraska near Arnold. These earthquakes have no readily apparent cause and no evidence of the responsible fault system is seen at the surface. A joint analysis of vintage, regional gravity and magnetic datasets before the first earthquake revealed a lineament that could represent a pre-existing fault system. New high resolution potential fields data are needed to confidently map the subsurface features around the cluster. To design a survey and collect the data, the following tasks need to be addressed: [1] The earthquakes’ hypocenters need to be improved (relocated) to increase the efficiency …

All These Things We've Done Before: A Brief History Of Red-Power Inspired Projects, Programs, And Efforts At The University Of Nebraska-Lincoln And What They Can Do For Us Today, Jake Borgmann

Honors Program: Senior Projects (Public)

The Red Power Movement from 1969-1975 inspired both Indigenous and non- Indigenous students and faculty from the University of Nebraska-Lincoln (UNL) to work for the betterment of Indigenous peoples in areas of affirmation, education, leadership, and language preservation and revitalization. For a time, student efforts by the Council of American Indian Students, faculty sponsored Indigenous education-centered programs, educational outreach through television, and Lakota language courses helped carve out an Indigenous space on campus where Indigenous students could thrive and seek empowerment through education. This era of Red Power-inspired projects, programs, and efforts at UNL peaked from 1969 to the early …

Existence And Uniqueness Of Minimizers For A Nonlocal Variational Problem, Michael Pieper

Honors Program: Senior Projects (Public)

Nonlocal modeling is a rapidly growing field, with a vast array of applications and connections to questions in pure math. One goal of this work is to present an approachable introduction to the field and an invitation to the reader to explore it more deeply. In particular, we explore connections between nonlocal operators and classical problems in the calculus of variations. Using a well-known approach, known simply as The Direct Method, we establish well-posedness for a class of variational problems involving a nonlocal first-order differential operator. Some simple numerical experiments demonstrate the behavior of these problems for specific choices of …

Seventh Grade Book Club Unit, Emily Donnell

Honors Program: Senior Projects (Public)

The purpose of this book club unit is to teach students the valuable lessons they need to learn about adversity and emotions while still preparing them for the assessments that are required by school districts. This unit is centered around “Drums Girls and Dangerous Pie” and “Wonder”. These books are part of the required curriculum for on-level 7th graders within Lincoln Public Schools (LPS) in Lincoln, NE. Open discussions and collaboration are the two main ways that students will come to understandings within this unit.