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Droughtscape, Spring 2023, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

DroughtScape, Spring 2023

The Future Of Recycling Pickup, Ciara Nelson, Olivia Prawoto, Noelle Phillipi, Michelle Zenk

Environmental Engagement in the Community (ENVR 319): Student Projects

Environmental Engagement in the Community projects, fall 2023

A poster titled The Future of Recycling Pickup for client South Sioux City, Nebraska (Oscar Gomez).

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Lighting The Mad Day, Francisco Hermosillo Iii

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

This thesis describes the production process of the lighting design for the opera, The Marriage of Figaro, K. 492, byWolfgang Amadeus Mozart, which was produced by the Glenn Korf School of Music and performed in Kimball Recital Hall on November 11 and 13, 2022. The opera was directed by William Shomos and conducted by Tyler White, with scenic design by JD Madsen, costume design by Camille Lerner, technical direction provided by Jason Hibbard, and the head electrician was Obadiah Harvey.

This thesis documents the entire lighting design process including the production meetings, research, conceptual ideas, technical rehearsals, responses to …

Understanding The Participation Gap At Predominantly White Institutions: Examining Institutional Practices That Prevent Black Students From Studying Abroad, Jamil Funnah

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

Study abroad is an opportunity students in higher education increasingly participate in (Institute of International Education, 2022). However college Students of Color, particularly Black students, participate in study abroad at disproportionately lower rates when compared to their white peers. This case study seeks to understand the multiple influences that inform lower levels of Black student participation in study abroad. Using Gusa’s (2010) white institutional presence framework, I examine multiple data points within a singular site including institutional messaging, procedures, and students interviews. Findings showed that multiple reasons impact Black students' decisions to study abroad. Understanding the findings can lead to …

Experimentation On Nebraska Farms For Sustaining Soil Health Management, Fernanda Souza Krupek

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

Soil health management practices have increasingly been promoted across US agroecosystems to address many interrelated environmental and economic food system challenges. Sustaining conservation behavior – through farmer’s adoption and continued use of practices – is key for achieving many soil health-related intended social-ecological benefits. Using a range of scientific methods, from lab-based experiments to on-farm research to farmer interviews, the overall objective of this dissertation research was to explore soil and human dimension considerations to design farming and knowledge transfer systems for sustaining soil health management in the US Midwest. In a multivariate analysis of ten on-farm research sites, we …

Estimating Crop Stomatal Conductance Through High-Throughput Plant Phenotyping, Junxiao Zhang

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

During photosynthesis and transpiration, crops exchange carbon dioxide and water with the atmosphere through stomata. When a crop experiences water stress, stomata are closed to reducing water loss. However, the closing of stomata also negatively affects the photosynthetic efficiency of the crop and leads to lower yields. Stomatal conductance (gs) quantifies the degree of stomatal opening and closing by using the rate of gas exchange between the crop and the atmosphere, which helps to understand the water status of the crop for better irrigation management. Unfortunately, gs measurement typically requires contact measuring instruments and manual collection in the field, which …

“Evolving Homes, Not Revolving Doors”: Examining Lesbian, Gay, And Bisexual Foster Parents’ Discursive Construction And Negotiation Of Identity Layers And Identity Gaps, Lucas Hackenburg

Department of Communication Studies: Dissertations, Theses, and Student Research

The United States foster care system serves more than half a million children each year (U.S. Department of Health and Human Services [DHH], 2023). The purpose of this study was to examine how LGB foster parents discursively construct and navigate their identities in the fostering context. The researcher undertook in-depth interviews with 18 LGB people who were currently fostering or had previously fostered at least one child from the foster care system. The researcher analyzed the interview data using Braun and Clarke’s reflexive thematic analysis (2019).

Consistent with the Communication Theory of Identity (Hecht, 1993; 2015; Hecht & Phillips, 2022), …

Exploring Modern Trends And Prevention Strategies For Childhood Obesity: A Comprehensive Literature Review, Anya E. Bogen

Honors Program: Senior Projects (Public)

This literature review seeks to provide an overview of the current research on childhood obesity. The study examines the prevalence and causes of childhood obesity, including genetic, environmental, and behavioral factors. The review also discusses the health consequences associated with childhood obesity, such as the increased risk for chronic diseases and psychological and social problems. Additionally, the review explores the effectiveness of interventions designed to prevent childhood obesity, including individual lifestyle modifications, education from health practitioners and school programs, and global, national, and state programs to promote wellness. The literature review concludes that childhood obesity is a complex and multifactorial …

Die Deutsche Nationalversammlung Und Weimar: On The Creation Of Democracy In Weimar Germany, Jason Wendling

Honors Program: Senior Projects (Public)

This paper is a historical analysis of the creation of the Weimar Republic, as well as a political analysis of the Weimar Republic’s constitution. In reviewing both Weimar’s history as well as the constitution, I hope to inspire learners to look back to the Weimar Republic, and not focus primarily on the failures that led to the rise of the Nazi Regime, but rather celebrate the successes that the drafters of the constitution were able to achieve. I review the history of the 1918 November Revolution, the history and party programs of the three important parties of the Weimar Republic, …

Jpl Robotic Avionics & Sensor Kit (Rask), John Helzer

Honors Program: Senior Projects (Public)

No abstract provided.

The Effects Of Exercise On The Lipid Profile Of Extracellular Vesicles, Tesha Kerr

Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research

We sought to ascertain the effect of different types of exercise (aerobic training and resistance training) on the lipid profile of extracellular vesicles. Thus, we had participants perform bouts of AT and RT and rest (control) and collected blood samples from them immediately after (timepoint 0) and 30 minutes after (timepoint 30) exercise. Small extracellular vesicles (sEVs) were isolated from plasma of participants using cushioned-density gradient ultracentrifugation (C-DGUC). Small EV size, morphology, and protein markers were determined using nanoparticle tracking analysis, transmission electron microscopy, and western blot, respectively. Additionally, we performed untargeted lipidomics on the sEV isolate. We found that …

Regenerative Farming Practices: How Much Carbon Do They Sequester?, Andrew M. Havens

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

Along with the recent rise of voluntary carbon markets comes potential carbon credit producers seeking reliable information on how much carbon they can expect to sequester. In this thesis a distribution of expected sequestration outcomes is constructed using cost-benefit analysis and data gathered from agronomic experiments and land-grant university crop budgets for cover crops and no-till practices. The inverse cumulative distribution of carbon sequestration outcomes from adopting a regenerative agricultural practice is visualized and the net social benefit of paying farmers to produce carbon credits is estimated. Results show that on average there is between $29.02 and $37.20 of social …

Wakara's Waterscapes: Storytelling, Cartography, And Rhetorical Sovereignty On The Shores Of The Green River, Abbey O'Brien

Honors Program: Senior Projects (Public)

In the mid nineteenth-century, Wakara, a prominent Ute leader, witnessed the invasion of his homeland by Mormon settlers and mountain-men. He met the scouts and explorers who were sent out to examine the land and waterscapes, and who drew maps along their way. It was those same maps which were eventually used as tools to justify colonial expansion all across the Utah territories, Wakara’s home. But Wakara resisted. Employing his understandings of the roles that cartography and the written word played in Mormon and settler discourse, Wakara created his own maps in order to assert his Indigenous authority over the …

Crpl 400/800: Introduction To Planning—A First Project Benchmark Portfolio, Abigail L. Cochran

UNL Faculty Course Portfolios

In this benchmark portfolio, I reflect on course design and assess student learning in a cross-listed course that serves as a core, introductory course for all undergraduate minor and graduate major students in the Community and Regional Planning (CRP) program, CRPL 400/800: Introduction to Planning. CRPL 400/800 is a survey course intended to introduce students to the discipline of community and regional planning. I taught this course fully online in the spring of 2023, which represented a new format for the class (it is typically taught in person) and a new format of instruction for me. Content wise, this course …

Alec 805 Teaching Portfolio: Exploring Students' Teaching Effectiveness, Becky Haddad

UNL Faculty Course Portfolios

This portfolio explores students attainment on InTASC Standards 1 & 3 through ALEC 805: Advanced Teaching Strategies. Students completed an initial teaching roots reflection and a final education philosophy that served as the basis for analyzing growth in effective teaching. Overall, students had more statements discussing teaching methods and strategies in their final education philosophies than they did in their initial reflections, but used their own experience to substantiate these methods much less. This provides opportunities for additional synthesis and reflection through the course, as well as opportunities for future scholarship in the course focused on students' connection to their …

Does Being Known Matter? Analyzing The Effects Of Name Recognition By Instructor And Student, Brandon Bosch

Department of Sociology: Faculty Publications

Trying to learn the names of students is a challenging semester ritual for many professors and graduate students. In support of this endeavor, research suggests that learning students’ names promotes greater student participation and engagement (Auster and MacRone 1994; Pearson and Lucas 2011). However, both research and practical pedagogical advice has typically focused only on the importance of students believing that instructors know their names. Consequently, we know little about students feeling recognized by name by other students. To further explore this issue, this study analyzes both the predictors and outcomes of student name recognition. The results of the study …

United States Geological Survey Response To The Office Of Science And Technology Policy Memo, 2022: Public Access Plan (April 2023)

Copyright, Fair Use, Scholarly Communication, etc.

USGS response to OSTP memo, 2022: Public Access Plan (April 2023)

Infusion Rather Than Isolation: Integrating Principles Of Equity, Diversity, Inclusion, Decolonization, And Indigenization In Toolkits For Remote Instruction During The Covid-19 Pandemic, Robin Attas, Lauren Anstey, Lindsey Brant, Karalyn Mcrae

To Improve the Academy: A Journal of Educational Development

In the spring of 2020, our Centre for Teaching and Learning (CTL) developed the Transforming Teaching and Teaching Assistant Toolkits, consisting of in-house and curated open-access resources on various aspects of remote teaching, along with accompanying webinars. We deliberately infused principles of equity, diversity, and inclusion (EDI) and decolonization and Indigenization across all aspects of the resources for several reasons: our CTL’s commitment to these principles as institutional priorities that are the responsibility of all staff, numerous theorists’ advocacy to adopt inclusive pedagogies across the curriculum rather than tokenistic “add-and-stir” gestures, and a desire to counter the inequities in education …

Purpose, Place, And People: How The Pandemic Helped Foster Open And Inclusive Course Design, Benjamin K. Haywood, Diane E. Boyd, John A. Mcarthur

To Improve the Academy: A Journal of Educational Development

In the spring of 2020, many institutions of higher education rapidly adopted new models of course delivery to support the ongoing need for instructional flexibility in response to the SARS-CoV-2 pandemic. This article discusses how the transition to a flexible instructional model at Furman University created space for faculty to consider the value of intentional learning environment design to meet students where they are both literally and figuratively. Reporting on a course planning framework focused on the alignment of learning outcomes, learning space, and considerations of student engagement and accessibility, this article reviews data from a faculty survey on pedagogical …

Learning Communities Promote Pedagogical Metacognition In Higher Education Faculty, Audrey J. Tocco, Lauren A. Mehrhoff, Haley M. Osborn, Lyda F. Mccartin, Molly M. Jameson

To Improve the Academy: A Journal of Educational Development

Pedagogical metacognition, or the reflective and reflexive actions associated with teaching practice, strengthens the planning, monitoring, evaluation, and adjustment of teaching in higher education faculty. Learning communities are optimal environments to foster this active teaching reflection. This study incorporated pedagogical metacognition into a faculty learning community curriculum and explored its impacts on higher education instructors’ reflective and reflexive practices. Faculty participants completed monthly metacognitive reflections for one academic year, each corresponding to a research-based principle of learning. Qualitative analysis indicated that faculty learning community participants recognized their lack of pedagogical training, successfully reflected on their teaching strategies, identified areas for …

Extremal Absorbing Sets In Low-Density Parity-Check Codes, Emily Mcmillon, Allison Beemer, Christine A. Kelley

Department of Mathematics: Faculty Publications

Absorbing sets are combinatorial structures in the Tanner graphs of low-density parity-check (LDPC) codes that have been shown to inhibit the high signal-to-noise ratio performance of iterative decoders over many communication channels. Absorbing sets of minimum size are the most likely to cause errors, and thus have been the focus of much research. In this paper, we determine the sizes of absorbing sets that can occur in general and left-regular LDPC code graphs, with emphasis on the range of b for a given a for which an (a, b)-absorbing set may exist. We identify certain cases of extremal …

Snowmass 2021 Computational Frontier Compf4 Topical Group Report Storage And Processing Resource Access, W. Bhimji, D. Carder, E. Dart, J. Duarte, I. Fisk, R. Gardner, C. Guok, B. Jayatilaka, T. Lehman, M. Lin, C. Maltzahn, S. Mckee, M. S. Neubauer, O. Rind, O. Shadura, N. V. Tran, P. Van Gemmeren, G. Watts, B. A. Weaver, F. Würthwein

Holland Computing Center: Faculty Publications

The Snowmass 2021 CompF4 topical group’s scope is facilities R&D, where we consider “facilities” as the hardware and software infrastructure inside the data centers plus the networking between data centers, irrespective of who owns them, and what policies are applied for using them. In other words, it includes commercial clouds, federally funded High Performance Computing (HPC) systems for all of science, and systems funded explicitly for a given experimental or theoretical program. However, we explicitly consider any data centers that are integrated into data acquisition systems or trigger of the experiments out of scope here. Those systems tend to have …

Establishment Of Wildflower Islands To Enhance Roadside Health, Ecological Value, And Aesthetics Phase Ii, Jackson Ebbers, Heidi L. Hillhouse, John A. Guretsky, Thomas J. Weissling

Nebraska Department of Transportation: Research Reports

No abstract provided.

Ithaka S+R Us Library Survey 2022: Navigating The New Normal, Ioana G. Hulbert

Copyright, Fair Use, Scholarly Communication, etc.

The Ithaka S+R Library Survey has examined leadership and strategic perspectives in the field by surveying library deans and directors nationally on a triennial basis since 2010. The research project’s overarching goals are to provide the library community with a valuable data source to inform decision making and track the emerging opportunities and challenges leaders face in steering their organizations. In fall 2022, we surveyed library leaders at not-for-profit four-year academic institutions across the United States, with a response rate of 42 percent based on 612 responses.

In this sixth iteration of the project, we continued to track high-level issues …

Interface-Engineered Ferroelectricity Of Epitaxial Hf0.5Zr0.5O2 Thin Films, Shu Shi, Haolong Xi, Tengfei Cao, Weinan Lin, Zhongran Liu, Jiangzhen Niu, Da Lan, Chenghang Zhou, Jing Cao, Hanxin Su, Tieyang Zhao, Ping Yang, Yao Zhu, Xiaobing Yan, Evgeny Y. Tsymbal, He Tian, Jingsheng Chen

Department of Physics and Astronomy: Faculty Publications

Ferroelectric hafnia-based thin films have attracted intense attention due to their compatibility with complementary metal-oxide-semiconductor technology. However, the ferroelectric orthorhombic phase is thermodynamically metastable. Various efforts have been made to stabilize the ferroelectric orthorhombic phase of hafnia-based films such as controlling the growth kinetics and mechanical confinement. Here, we demonstrate a key interface engineering strategy to stabilize and enhance the ferroelectric orthorhombic phase of the Hf_0.5Zr_0.5O₂ thin film by deliberately controlling the termination of the bottom La_0.67Sr_0.33MnO₃ layer. We find that the Hf_0.5Zr_0.5O₂ films on …

From Laboratory To Field: Unsupervised Domain Adaptation For Plant Disease Recognition In The Wild, Xinlu Wu, Xijian Fan, Peng Luo, Sruti Das Choudhury, Tardi Tjahjadi, Chunhua Hu

School of Computing: Faculty Publications

Plant disease recognition is of vital importance to monitor plant development and predicting crop production. However, due to data degradation caused by different conditions of image acquisition, e.g., laboratory vs. field environment, machine learning-based recognition models generated within a specific dataset (source domain) tend to lose their validity when generalized to a novel dataset (target domain). To this end, domain adaptation methods can be leveraged for the recognition by learning invariant representations across domains. In this paper, we aim at addressing the issues of domain shift existing in plant disease recognition and propose a novel unsupervised domain adaptation method via …

College Students' Relationship With Attention Deficit Hyperactivity Disorder And Learning Accommodations At The University Of Nebraska-Lincoln, Brianna Danehey, Kim Hansen Dr., Chelsea Witt Dr.

Honors Program: Senior Projects (Public)

Attention deficit hyperactivity disorder (ADHD) can provide many challenges for college students due to difficulties focusing, multi-tasking, and staying organized. Colleges are required to offer academic accommodations to students with disabilities in an attempt to provide students with an equitable learning environment. However, accommodations may be ineffective if they are highly unattainable, unused by the student once granted, or hindered by university faculty.

The objective of this study was to identify barriers to receiving effective and beneficial academic accommodations for individuals with ADHD at the University level and to provide insight into college students' knowledge and relationships relating to the …

Harvest Aids Did Not Advance Maturity Of Non-Shatter Pennycress, Julija A. Cubins, Samantha Wells, Russ W. Gesch, Gregg A. Johnson, Maninder K. Walia, Ratan Chopra, M. David Marks, Rebecca D. Swenson, Katherine Anna Frels

Department of Agronomy and Horticulture: Faculty Publications

Reliance on summer annual crops in the Upper Midwest results in fallow land from late fall through early spring, providing opportunities to integrate winter crops, such as pennycress (Thlapsi arvense L.), onto the landscape. Pennycress agronomics have primarily been studied using unimproved wild-type lines prone to seed shatter, resulting in significant yield loss if not harvested early. However, high plant and seed moisture complicates harvest and seed storage. A new breeding line with a reducedshatter mutation made it possible to use harvest aids to reduce plant moisture without the risk of seed loss. The objectives of this study were …

Stictoleptura Cordigera (Füssli, 1775) (Cerambycidae: Lepturinae: Lepturini), A New Alien Longhorn Beetle Introduced In Chile, José Mondaca, Guido Rebolledo, Francesco Vitali

Insecta Mundi

The Palaearctic longhorn beetle Stictoleptura cordigera (Füssli, 1775) (Cerambycidae: Lepturinae: Lepturini) is recorded for the first time in Chile, based on specimens collected in a rural locality of the Maule Region. This new record is the first in the New World and increases to eleven the number of exotic cerambycids introduced and established in the Chilean territory. A brief diagnosis for recognition of the species and data about its distribution and natural history are provided. The possible route of entry of this cerambycid into Chile is discussed.

Stictoleptura cordigera (Füssli, 1775) is a polyphagous, saproxylic, anthophilous cerambycid widely distributed in …

Graphene Twistronics: Tuning The Absorption Spectrum And Achieving Metamaterial Properties, Ammar Armghan, Meshari Alsharari, Khaled Aliqab, Osamah Alsalman, Juveriya Parmar, Shobhit K. Patel

Department of Mechanical and Materials Engineering: Faculty Publications

Graphene twistronics using multilayer graphene is presented in such a way that it provides a metamaterial effect. This manuscript also analyzes the prediction of behavior using machine learning. The metamaterial effect is achieved by twisting the graphene layers. Graphene twistronics is a new concept for changing the electrical and optical properties of bilayer graphene by applying a small angle twist between the layers. The angle twists of 5^o, 10^o, and 15^o are analyzed for the proposed graphene twistronics design. Tuning in the absorption spectrum is achieved by applying small twists to the angles of the …