Digital Commons Network^™

Unlocking The Organizational Roles For Effective Teacher Leadership, Diane E. Johnson, Shelly Allen, Frances Perez

School Leadership Review

Teacher leader (TL) retention has emerged as a critical concern as educators increasingly exit leadership roles due to policy pressures, inadequate compensation, limited administrative support, and diminished professional recognition. Although schools rely on teacher leaders to support instructional improvement and professional collaboration, many leadership structures fail to provide sustainable pathways for teacher leadership development. Guided by a Distributed Transformational Leadership Framework, which integrates transformational and distributed leadership theories, this qualitative study examined how teacher leaders perceive leadership opportunities, organizational barriers, and potential leadership structures within K–12 school systems. Data were drawn from archived capstone reflections of 39 teacher leadership master’s …

The Impact Of The Space Science Steam Enrichment Program On Grade 11 And 12 Gifted Students' Content Knowledge, Design Thinking, And Problem-Solving Skills In The United Arab Emirates, Nada Ali Mubarak Obaid

Thesis/ Dissertation Defenses

This study examines the impact of a Space Science Enrichment Program grounded in Science, Technology, Engineering, Arts, and Mathematics (STEAM) education and designed for gifted secondary students in the Elite and Advanced Science Streams of UAE government schools. Informed by problem-based learning, project-based learning, and design thinking frameworks, the program aimed to enhance students' content knowledge, academic achievement, and design thinking and problem-solving skills. Over a two-month period, students participated in blended online and face-to-face theoretical and practical sessions introducing space science topics such as satellite missions and applications, CubeSats, rocket motion, thermal and vibration simulations, 3D modelling, and additive …

Drainage Proximity And Sinkhole Occurrence In Sivrihisar (Central Turkey): A Comparative Analysis Of Linear, Poisson, And Negative Binomial Regression Models, Bilge Bingül, Emrah Pekkan, Resul Çömert

International Journal of Speleology

This study investigates the relationship between sinkhole occurrence and distance to drainage in the Sivrihisar region (Central Turkey) and evaluates the suitability of different regression approaches for modeling clustered count data in karst terrains. A comprehensive inventory of 104 sinkholes developed within the Neogene lacustrine limestones of the Akpınar Formation was compiled using official records, remote sensing analyses, and detailed field surveys. Sinkhole occurrences were analyzed relative to a drainage network derived from a high-resolution Digital Surface Model and grouped by proximity to drainage lines. Linear Regression (LM), Poisson Regression (PR), and Negative Binomial Regression (NBR) models were comparatively applied …

Attention To Their Uniqueness: Differentiation In A University Classroom, Robin Gingerich

MITESOL Journal: An Online Publication of MITESOL

University students come to campus with unique gifts and individual challenges. To meet the needs of diverse learners, one solution is differentiation. Differentiation involves deliberately planning lessons that address the unique learning styles of diverse learners by offering pedagogy informed not only by content, but also by the students themselves. While differentiation in elementary and secondary classrooms is considered best practice, professors in higher education face unique challenges when it comes to implementing differentiation. This paper examines definitions of differentiation, research on differentiation in universities, and, from the author’s personal experience, offers suggestions for university writing instructors.

Apprenticing Towards Deeper Learning In The Ela Classroom: Using Young Adult Literature To Support Students’ Mastery, Identity, And Creativity, Julianna Kershen, Kacy M. Price, Nynke Wimp, Evie Jackson, Kaitlin Rogers

Virginia English Journal

This practitioner focused article highlights the perspectives of pre-service teachers and undergraduate researchers investigating the kinds of learning interactions and instructional decisions that result in deeper learning outcomes for high school students. Deeper learning outcomes are often described as 21^st century skills, including mastery learning, support of holistic and scholarly student identities, and the ability to engage collaboratively with critical and creative problem-solving skills. The authors suggest a series of young adult literature texts that can serve as springboards into project-based learning opportunities that provide authentic and real world-connected activities, iterative cycles of learning, peer-peer collaboration, and in-depth disciplinary …

Letter From The Editor's Desk, Cinde Wollenberg

Virginia English Journal

No abstract provided.

Limitations Of Signature-Based Network Intrusion Detection Under Modern Traffic Conditions, Henry Guidry

Cybersecurity Undergraduate Research Showcase

Network Intrusion Detection Systems are tools used to monitor network traffic and alert to suspicious or harmful activity before it can cause harm. Signature-based versions of these systems are a foundation for intrusion detection, operating by finding common patterns and forming malicious signatures. However, three developments in modern network environments have greatly impacted the significance of Network Intrusion Detection Systems. These three developments are the near-complete adoption of end-to-end encryption, the use of sophisticated packet fragmentation techniques, and the processing demands of high-throughput networks. Encryption makes deep packet inspection practically infeasible by transforming inspectable payloads into ciphertext, forcing NIDS to …

The Efficacy Of Manganese Sulfate As A Negative Contrast Agent For Magnetic Resonance Cholangiopancreatography, Zainab Abdulla Mankhi

Karbala International Journal of Modern Science

The current study aims to find an alternate oral contrast media for use in magnetic resonance cholangiopancreatography (MRCP) that satisfies the following criteria, the greatest imaging quality safety, no or few side effects, and low cost. The present study created an oral contrast agent sample (solution) by dissolving a one tablet of manganese sulfate supplement (taken daily dose) in 200 ml of distilled water. Thirty-three volunteers assessed the sample using MRCP examine pre and post contrast. By evaluating the signal intensity to compute contrast (C), signal to noise ratios (SNR), and contrast to noise ratio (CNR), the resulting MR images …

Plaques Collection Finding Aid

Finding Aids

No abstract provided.

Stylemys Nebrascensis Predation Hypothesis, Noah Lohrmeyer, Amanda Peng

SACAD: Scholarly Activities

In 2008 a fossilized tortoise shell was brought into the Sternberg Museum of Natural History. As we prepared the fossil, we observed markings that resembled predation. We are trying to find what species from the White River Formation could preyed on the tortoise. There are few publications on predation for this species. With few publications, we want to find what predator would hunt these species. We cross referenced the site of the tortoise and observed several carnivorous species. We used straight carapace length (Hermanson et al., 2024) and a regression formula (Wilson et al., 2016) to analyze the species we …

Spectroscopic Characterization And Extraction Optimization Of Catechins In Green Tea, Zach J. Mckinley, Masakatsu Watanabe

SACAD: Scholarly Activities

This research initiative immerses students in a multifaceted analytical chemistry investigation of catechins—polyphenolic antioxidants prevalent in green tea—through the application of both classical and modern techniques. The project emphasizes hands-on experience with real-world sample analysis, method development, and critical data interpretation.

Catechins were extracted from various commercial green tea products, including loose leaves, powders, and dietary supplements, by trituration with ethyl acetate followed by solvent partitioning using a methanol and water solution. The resulting extracts were analyzed using UV-Visible spectroscopy to quantify catechin content. Selected samples were further characterized by liquid chromatography–mass spectrometry (LC-MS), confirming both the identity and purity …

Mumm Vs. Minium: A Tale Of Two Quarries, Kale Link, Amanda Peng

SACAD: Scholarly Activities

In 2025, a discrepancy was discovered in the field numbers of a selection of mammal fossils, which had been mistakenly catalogued as originating from the Minium Quarry in Graham County, KS instead of the Mumm Quarry in Rawlins County, KS. While both quarries belong to the Ogallala Formation, they demonstrate differing biostratigraphic ages, faunal assemblages, and taphonomic settings. Mumm is Clarendonian aged, while Minium is Hemphillian. To correct this issue, all the Mumm specimens were assigned to an updated locality with more precise geographic and biostratigraphic data.

Developing Strategies For Pce Outreach, Mariah Blankenbaker, Gordon Carlson, Daniel Adesoji, Levi Eck

SACAD: Scholarly Activities

In collaboration with Professional and Continuing Education (PCE), we produced projects to automate their internal tasks, as well as to promote their services. By taking advantage of software techniques, we bridged live-action footage with 2D and 3D computer visuals for promotional material. In addition, we researched the capabilities of creating a custom Generative Pre-trained Transformer (GPT) and trained it to analyze and interact with thousands of industry datapoints.

Flood Frequency Analysis Of Big Creek, Ryan S. Funai, Jason T. Santoli, Gunnar F. Wainscott, Callen Zurn

SACAD: Scholarly Activities

The primary purpose of flood frequency analysis is to determine a timeframe of potential flood events. Analyzing flood frequency is a process that involves collecting years of quantitative data on discharge rates, calculating the probability of exceeding a certain rate of discharge, and calculating the average interval between events equaling or exceeding a certain rate of discharge. The Big Creek Watershed drainage area covers an area of 549 square miles in Western Kansas, including Ellis, Trego, Gove, and Sheridan Counties. This research analyzes 79 years of data collected by the USGS at the intersection of Big Creek and US-183. Water …

Fourier Analysis Of Electronic Synthesizer Waveforms, Jiayan Ling, Jack W. Maseberg

SACAD: Scholarly Activities

We compute Fourier series coefficients for some standard electronic synthesizer waveforms and provide plots of our results.

Exploring Ancestral Enzymes Through Sequence Reconstruction And Stability Prediction, Jeyun Park, Masakatsu Watanabe

SACAD: Scholarly Activities

Proteins evolve through sequence changes that shape structure, stability,

and function. Ancestral sequence reconstruction (ASR) infers ancestral

proteins from modern homologs, but many studies focus on sequence

inference without evaluating structural or energetic feasibility.

β-lactamases provide an ideal model due to their evolutionary diversity and

clinical relevance in antibiotic resistance.

Here, we present an integrated ASR workflow combining phylogenetic

inference (IQ-TREE), ancestral reconstruction, and structural and stability

validation using AlphaFold and FoldX. By reanalyzing a curated β-

lactamase dataset and comparing with a recent study (Risso et al., 2013),

we provide a controlled comparison of ancestral sequences, predicted

structures, and …

Fhsu Western Kansas Regional Water Quality Study, Gunnar F. Wainscott

SACAD: Scholarly Activities

This study, conducted by Fort Hays State University faculty and graduate students, aims to analyze water quality through systematic sampling and analysis of wells, ponds, and streams across the region. Each sample is analyzed for a suite of eighteen parameters, such as arsenic, lead, nitrate, etc. By combining laboratory results with spatial data, this project seeks to identify regional patterns, establish a foundation for future monitoring efforts, and provide participating landowners with clear, accessible information about their own water quality.

Cross-Cultural Differences In Academic Pressure, Anxiety, And Sleep Quality Among High-Achieving Students In The United States And South Korea, Yumi Choi, Brett Zollinger, Jisook Park

SACAD: Scholarly Activities

This study examines cross-cultural differences in academic pressure, anxiety, and sleep quality among high-achieving students in the United States and South Korea. As academic success becomes increasingly competitive in both countries, students often face significant psychological and physiological challenges. This research investigates how differing educational systems and cultural expectations influence levels of academic pressure and their subsequent impact on anxiety and sleep quality.

Data were collected from high-achieving high school students in both countries using standardized measures, including the Pittsburgh Sleep Quality Index (PSQI) and the Generalized Anxiety Disorder-7 (GAD-7) scale. Comparative analyses were conducted to identify differences in perceived …

Fractals Exploration Through Computer Visualization, Sihui Wei

SACAD: Scholarly Activities

This project explores the generation and visualization of fractals using computational methods. Several well-known fractal structures, including the Koch Snowflake, Sierpinski Triangle, Mandelbrot Set, and Julia Set, were implemented using C++ and the SFML graphics library.

The study focuses on how simple mathematical rules, when applied recursively or iteratively, can produce highly complex and self-similar structures. For geometric fractals, recursive algorithms were used to subdivide shapes and generate patterns. For complex-plane fractals, iterative formulas were applied pixel-by-pixel to determine set membership and visualize escape behavior.

The results demonstrate that small changes in parameters, such as recursion depth or iteration count, …

A Computational Study Of Taylor Approximation, Sihui Wei

SACAD: Scholarly Activities

This project investigates the accuracy of Taylor approximation using computational methods. Taylor polynomials of degree 1, 3, and 5 were applied to the functions e^x, sin x, and ln⁡(1+x), all centered at x=0.

Using C++, we generated both numerical data and graphical visualizations to analyze the absolute error∣f(x)−Tn(x)∣. The results show that higher-degree polynomials provide better approximation near the expansion point, while the error increases as the distance from the center grows.

In addition, the study reveals that the effectiveness of Taylor approximation depends not only on the polynomial degree but also on the structure of the function. In particular, …

Mgrre_Thinsections_Mgrre-141_2, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Mgrre-141_3, Mgrre

Thin Sections

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Mgrre_Thinsections_Mgrre-141_6, Mgrre

Thin Sections

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Mgrre_Thinsections_Mgrre-141_7, Mgrre

Thin Sections

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Mgrre_Thinsections_Mgrre-141_8, Mgrre

Thin Sections

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Mgrre_Thinsections_Mgrre-141_9, Mgrre

Thin Sections

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Mgrre_Thinsections_Mgrre-141_11, Mgrre

Thin Sections

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Mgrre_Thinsections_Mgrre-141_12, Mgrre

Thin Sections

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David Berkowitz, Enzyme-Assisted Organic Synthesis & Nsf Officer, Mark A. Griep, David B. Berkowitz

Department of Chemistry: Faculty Interviews

Dr. Dave Berkowitz was born in Urbana, Illinois. He earned his bachelor's degree in chemistry from the University of Chicago, where he did undergraduate research. Next, he earned his doctorate from Harvard University. However, his advisor, Steve Benner, moved from Harvard to ETH Zurich, also called the Swiss Federal Institute of Technology. Dave accompanied him to Zurich, where he completed his dissertation work. When Dave returned to the U.S., he did a postdoc with the legendary Samuel Danishefsky at Yale University. In 1991, he joined UNL as an assistant professor of chemistry and quickly rose through the ranks. Dave is …

Mgrre_Thinsections_Mgrre-141_1, Mgrre

Thin Sections

No abstract provided.