Digital Commons Network^™

Analysis Of Online Platforms’ Free Trial Strategies For Digital Content Subscription, Li Chen

College of Business and Economics

Adopting subscription models has become a popular trend in e-commerce. Digital content platforms often use free trials to attract potential subscribers. However, rigorous research on platforms’ free trial strategies is lacking. Our paper aims to fill this gap using a horizontal duopoly framework. We investigate both the scenario of market symmetry and of market asymmetry. We study the benchmark case with no free trial for each scenario and derive equilibrium results with free trial promotion. We find that the platform will not benefit from free trials unless consumers’ learning rate exceeds a threshold. When a free trial is introduced in …

Demographics And Status Of The Eastern Woodrat In Southern Illinois, Tiffanie Atherton

Dissertations

The objectives of this study were to: (1) quantify levels of genetic intermixing in remnant Illinois eastern woodrat populations augmented with Ozark woodrats, and (2) assess genetic health and population viability in remnant and reintroduced woodrat populations. This dissertation is arranged into 3 chapters. DNA extractions, microsatellite genotyping, and mtDNA haplotype sequencing were conducted for individuals from the western Shawnee National Forest (WSNF) (i.e., LaRue Pine Hills [LPH], Fountain Bluff, Horseshoe Bluff), eastern Arkansas (AR), southern Missouri (MO), and 5 locations in the eastern Shawnee National Forest (ESNF), Illinois. Genetic data provided a strong signal in STRUCTURE which confirmed MO, …

Thawing And Storage Effects On Quality Of Plant-Based Sausage Patties, Dakota Cook

All Theses

Maintaining sausage analogue quality during a thawing process and storage is important for increasing consumer satisfaction. Following new trends and prevalence of plant-based meats and a flexitarian diet, two experiments were conducted to test how thawing methods (experiment 1) and storage temperatures (experiment 2) affect meat analogue quality. For Experiment 1, Jimmy Dean Original Sausage Patties Made with Pork & Turkey, Morningstar Veggie Original Patties and Beyond Sausage Original Patties were purchased pre-frozen and subsequently thawed in one of three ways: 1. thawed at 4°C for 24 hours, 2. thawed at room temperature (22°C±2°C) for 4 hours and 3. thawed …

Clinical Trials In Cardiogenic Shock: Challenges And Solutions For The Future, Anju Bhardwaj, Sahoor Khan, Shashank Sinha, Preethi Pirlamarla, Rajiv Sankaranarayanan, Alexander Hajduczok, Holger Thiele, Navin Kapur

Division of Cardiology Faculty Papers

No abstract provided.

Anxiety Screening At A Psychiatric Inpatient Facility: A Quality Improvement Project, Irene Akwitti

Doctor of Nursing Practice

Background. Generalized anxiety disorder is characterized by persistent anxiety and uncontrollable worry occurring more days than not for a minimum of 6 months (Patriquin & Mathew, 2017). Presently, anxiety screening and evidence-based practice treatment for adults are suboptimal. It is impossible to overemphasize the importance of early diagnosis and prompt treatment of generalized anxiety disorder in patients. Purpose. The purpose of this quality improvement project was to implement the Generalized Anxiety Disorder-7 (GAD-7) screening tool, a validated, evidence-based instrument, in a psychiatric inpatient facility to improve early detection and treatment of anxiety disorders in patients. Methods. Staff members were educated …

Jaepl - Volume 28, Wendy Ryden

The Journal of the Assembly for Expanded Perspectives on Learning

Full Issue of The Journal of the Assembly for Expanded Perspectives on Learning Volume 28.

Reformed Worship (Rw) 150 - Lent / Easter (December 2023), Reformed Worship Editors

Reformed Worship Magazine

Editorial: Walking with Jesus by Joyce Borger....2

Grief over Injustice, Hope for Wholeness by Elly Boersma Sarkany....3

A Refugee Prays the Psalms of Ascent by Carlos Colón....11

I Confess by Howard Thurman....19

Confessing with Our Bodies by Anthony Bolkema....20

Journeying to Shalom with the Prophets by Hilary Ritchie....22

An Ash Wednesday Compline Service by Linda Langstaff....24

"Nearer, My God to Thee" by Bethany Besteman....27

A Good Friday Service of Remembrance and Love by Erin Stout and Rachel Kroll....32

For Pastors: An Easter That Fits Us by Scott Hoezee....38

A Liturgy …

Mark Twain On The Soviet Silver Screen: Stalinist Laughter And Anti-Racism In Tom Soier, Cassio De Oliveira

World Languages and Literatures Faculty Publications and Presentations

This article is an analysis of the Soviet film Tom Soier, an adaptation of Mark Twain’s Tom Sawyer and Huckleberry Finn released in 1936, at the height of the Stalinist period. In the article, the author places the film in the context of the Soviet support of the Black struggle against racial segregation in America by showing how Tom Soier creatively combines the plots of Twain’s novels in order to propagate an antiracist message. Furthermore, by casting African American actors in the roles of Black enslaved characters, the film also engages with what Steven Lee has called the ethnic …

Vulnerabilities Of Greater Prairie Chicken And Tier 1 At-Risk Species In Nebraska Caused By Grassland Transition To Woody Dominance, Robert Peterson

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

Woody plant encroachment is a global threat and has been transitioning grasslands to woody dominance at a biome scale. This threat is present in the Great Plains grassland biome which is currently experiencing grassland biome collapse as the alternative woody biome advances northwest. Nebraska, which contains the most intact temperate grassland in the world, is currently at the front lines of this large-scale transition making this state’s management decisions vital for the remaining grasslands and the species which rely on these ecosystems. In this study, we assess the vulnerability of Greater Prairie Chicken and Tier 1 at-risk species in Nebraska …

Transferability Of Tsetse Habitat Models Between Different Regions In Kenya And Rwanda, Stella Gachoki, Anton Vrieling, Thomas A. Groen, Andrew Skidmore, Daniel Masiga

All Peer-Reviewed Publications

Accurate and reliable information on the distribution of tsetse habitats is crucial for the effective management of African Trypanosomiasis in sub-Saharan Africa. However, conducting large-scale surveillance of tsetse flies to develop distribution maps is impractical due to vast areas infested and limited resources available. To address this challenge, we evaluated the applicability of tsetse habitat models developed in the intensively sampled Shimba Hills National Reserve in Kenya for both the wet and the dry season, to two other regions in Kenya (Ruma National Park and Nguruman Conservancy) and one region in Rwanda (Akagera National Park). The models utilized satellite-based estimates …

Amine-Functionalized Lignin-Based Ionomer Nanocomposites For Redox Flow Batteries, Joshua Wilder

All Theses

As the development of energy storage technologies for renewable energy sources continues to garner attention, vanadium redox flow batteries (VRFBs) have emerged as promising source for grid-scale energy storage. A major component of the VRFB is the ion exchange membrane (IEM), as it serves to physically separate the two liquid electrolytes and also directly impacts the battery’s capacity, efficiency, and cost. The current industry standard IEM, Nafion™, not only accounts for a large portion of the cost of the VRFB but also suffers from poor proton selectivity. Herein, we have synthesized sulfonated poly(ether ether ketone) (SPEEK) composite membranes containing amine …

The Floral Thermal Environment: Physical, Morphological, And Environmental Determinants, And Their Impact On Plant-Pollinator Interactions, Jennifer Apland

All Theses

Anthropogenic climate change is driving major shifts in global temperatures and increases in extreme temperature events that contribute to reduced survival and species loss. To counteract extreme temperatures, many organisms can undergo geographic range shifts or engage in behavioral thermoregulation (e.g., movement to suitable microhabitats). While plants are sessile and thus subject to highly variable ambient temperatures, they have evolved mechanisms to regulate internal floral temperature. Floral thermoregulation may mitigate thermal stress on pollen and ovules and impact plant-pollinator interactions. These mechanisms for thermoregulation are often highly dependent on ambient temperature and solar radiation as most plants are not endothermic. …

The Effects Of Sous Vide Cooking And Cysteine Proteases On Instrumental And Sensory Textural Properties Of Lower Value Cuts Of Beef, Ian Smith

All Theses

Sous vide cooking has the potential to increase the value of lower quality cuts of beef. Understanding the textural properties following a cook-chill sous vide process is crucial to maximizing this potential. The use of enzymes may further increase the value of these products if able to positively alter the texture of the final product.

The first research objective was to use instrumental texture analysis to evaluate potential relationships between enzymatic treatments and sous vide processing time of lower value cuts of beef. Three cuts were evaluated: infraspinatus (top blade), semitendinosus (eye of round), and beef tongue. Infraspinatus and semitendinosus …

Phenology Of Asian Longhorned Beetle (Anoplophora Glabripennis, Coleoptera: Cerambycidae) In South Carolina, U.S.A., Lena Schmitt

All Theses

A new population of the Asian longhorned beetle (Anoplophora glabripennis Motschulsky, hereafter ALB), an invasive species in the United States since 1996, was discovered in Charleston County, South Carolina in 2020. This population is the furthest south ALB has been found in North America and provides an opportunity to examine the phenology of this beetle in a novel climate. I collected 1009 eggs, larvae, pupae, and adult beetles from the federal quarantine zone in South Carolina and used larval head capsule widths to determine the rate of development and voltinism of ALB in South Carolina’s coastal climate. With this …

Novel Protected Gelatin Capsules Containing Fish Oil Mitigated The Effect Of Milk Fat Depression And Reduced Rumen Degradation Compared To Untreated Capsules, Omar Manuel Pena Pena

All Theses

The objective of this study was to assess the effects of feeding gelatin capsules treated with alcoholic solutions of flavoring agents followed by drying containing fish oil on lactation performance, rumen fatty acids content and milk enrichment of fatty acids. In Trial 1, four multiparous ruminally-fistulated Holstein cows were randomly assigned to one of four dietary treatment sequences in a 4 x 4 Latin square design. Treatments consisted of 1) Control with no capsules, 2) Control plus 200 untreated capsules per cow/day, mixed with the TMR; 3) Control plus 200 treated capsules per cow/day placed directly into the rumen, 4) …

From The Pen Of The Secretary: Latter-Day Saint Women And Relief Society Minute Books, 1868–1889, Mckall Erin Ruell

All Graduate Theses and Dissertations, Fall 2023 to Present

In 1868, the Church of Jesus Christ of Latter-day Saints (also known as the Mormon church) re-organized their women's organization, the Relief Society. The secretaries of each local ward or congregation of the Relief Society in Utah kept a record of their meetings in their own minute books. These records have largely been neglected by scholars and much can be learned about nineteenth-century Latter-day Saint women through their pages. This thesis examines Relief Society minute books from Cedar City, Fillmore, Meadow, Holden, Spring Lake, Provo, Salt Lake City, and Millville, Utah, looking specifically at Latter-day Saint women's discourse, testimonies, and …

Increasing Social And Emotional Competencies Among Special Education Preschoolers, Alix Li Katz-Polowitz

Capstone Projects and Master's Theses

My capstone project focused on preschoolers’ emotional competence, which is defined as the ability to purposefully and truly experience a variety of emotions while regulating behavior patterns (Domitrovich et al., 2017). It is difficult for preschoolers to regulate their emotions and even more challenging for SPED children. Children who have difficulties associated with being in SPED are often rejected by other children and do not have opportunities to develop strong social skills. This can result in these children avoiding social situations in general, which causes them to fall further behind their peers with their social abilities (Schmitt et al., 2021). …

Nurses’ Perceptions Of Ppe Compliance Among South Mississippi Medical- Surgical Nurses, Jenna Roush

Honors Theses

Utilizing Personal Protective Equipment (PPE) appropriately is critical in protecting nurses and patients from contracting infectious diseases. Poor compliance with PPE is associated with increased hospital-acquired infections and directly impacts infection control measures. This thesis delves into the perceptions of PPE compliance and awareness among medical-surgical nurses in South Mississippi. A quantitative study utilizing a 28-item survey was implemented. Likert-style and open-ended survey questions were completed by n=28 participants. Univariate analysis was used to determine compliance among each PPE item, awareness and confidence of PPE items, and whether there was a lack of training or a PPE shortage. Based on …

Filming A Hidden Resource: The Soil In The Seventh Art Narrative, Antonio Ganga, Ludmila Ribeiro Roder, Enzo Antônio Paganini, Arun Dilipkumar Jani, Cassio Hamilton Abreu-Junior, Thiago Assis Rodrigues Nogueira, Gian Franco Capra

Biology, Agriculture and Chemistry Faculty Publications and Presentations

The general public often perceives soil as a hidden resource. In recent years, the film industry has shown an increasing awareness about the soil environment. Indeed, as public opinion about environmental problems has increased, soil as a natural resource has become more popular in public discourse, and, consequently, the film industry, partly because of its ability to showcase public concerns and mainstream opinion. This review aims to identify depictions of soil in films and the following consequences regarding their impact on society. We investigated movies containing different perspectives and aimed to understand: i) the role of the soil environment in …

Increasing Accessibility For Hard-To-Reach Cultural Heritage Sites Using Low-Cost Drone Photogrammetry, Eray Can

Graduate Theses and Dissertations

New recording technologies have ushered in a transformative era in archaeological research, with drone photogrammetry emerging as a pioneering tool in this field. This innovative approach leverages unmanned aerial vehicles (UAVs) equipped with high-resolution cameras to capture precise aerial imagery of archaeological sites. Drone photogrammetry offers numerous advantages, such as cost-efficiency, rapid data collection, and the ability to access remote or challenging terrain. By seamlessly integrating photogrammetric techniques, these technologies offer archaeologists the ability to create highly detailed 3D models. This study delves into the principles and applications of low-cost drone photogrammetry in archaeology, highlighting its potential to enhance site …

Virtue-Driven Leadership: Powering Excellence In Organizations, Joseph Scherrer

Arts & Sciences Graduate Student Theses and Dissertations

In this thesis, I seek to answer the question “What makes a good leader?” I approach this question systematically, starting in Chapter 1 by asking “What is Leadership?” In attempting to formulate a response, I find that the concept is slipperier than it first appears and difficult to pin down. All the same, I construct a thematic, contextually pertinent definition that provides reasonable precision for the purposes of this study. In Chapter 2, I present a representative survey of the social-scientific academic literature in order to establish the prospect that a philosophy of virtuous leadership can be empirically validated in …

Real-Time Analysis Of Aerosol Size Distributions With The Fast Integrated Mobility Spectrometer (Fims), Daisy Wang

McKelvey School of Engineering Graduate Student Theses & Dissertations

The Fast Integrated Mobility Spectrometer (FIMS) has emerged as an innovative instrument in the aerosol science domain. It employs a spatially varying electric field to separate charged aerosol particles by their electrical mobilities. These separated particles are then enlarged through vapor condensation and imaged in real time by a high-speed CCD camera. FIMS achieves near 100% detection efficiency for particles ranging from 10 nm to 600 nm with a temporal resolution of one second. However, FIMS’ real-time capabilities are limited by an offline data analysis process. Deferring analysis until hours or days after measurement makes FIMS' capabilities less valuable for …

Thermodynamics And Kinetics Analyses Of Clc-Ec1 Dimerization Reaction In Lipid Bilayers, Taeho Lee

Arts & Sciences Graduate Student Theses and Dissertations

The efforts of this thesis are directed towards understanding the thermodynamics and kinetics underlying the dimerization reaction of a chloride/proton antiporter membrane protein, CLC-ec1, in lipid membranes. Due to the inherent challenges of working with membrane proteins, thermodynamic and kinetic information for the protein association reactions in membranes has been historically limited. The research presented in this thesis demonstrates the technological advancements for these measurements in a model membrane protein system, thereby setting an important milestone for the field. Since CLC-ec1 dimerizes via a greasy, membrane embedded binding interface, the physical driving forces involved in this reaction were unknown. It …

Effects Of Seasonal Environment On Abundance, Behavior, Visual Signaling, And Perception In Prairie Butterflies, Grace Elizabeth Hirzel

Graduate Theses and Dissertations

Phenotypic plasticity is a widespread mechanism that allows animals to respond quickly to seasonal changes in their environment. However, the depth and complexity of these plastic responses is still being discovered. One aspect of seasonal physiology that is relatively unstudied is changes to sensory physiology and how it may explain changes in behavior. To determine how changes in seasonal conditions affect behavior, coloration, and vision, I examined populations of wild butterflies in Northwest Arkansas. Focusing on a single species, the common buckeye Junonia coenia, I found that seasonal coloration covaries with thermoregulating behavior and is accompanied by changes in visual …

A Framework Of Flow Models For The Development And Testing Of Cardiovascular Devices, Megan Laughlin

Graduate Theses and Dissertations

Cardiovascular disease (CVD) is the leading cause of death worldwide and its treatment continues to improve due to the advancement of innovative cardiovascular medical devices. In vitro and in silico models serve to replicate the in vivo environment for the development and testing of these devices prior to using animals for testing, and eventually humans in clinical trials. However, limitations related to these models exist in multiple areas including general, cardiac, and venous applications. Specifically, current gaps have been identified with customizable, tissue-mimicking phantoms (general), 2D Blood Speckle Imaging (BSI) (cardiac) and a bioprosthetic venous valve (venous). This dissertation focuses …

Impact Of Reducing Ammonia Concentration By Ozone Technology And Its Potential Improvement On Broiler Performance, Odilpio Quintana Ortega

Graduate Theses and Dissertations

The employment of ozone in livestock production as a means of mitigating ammonia is used for enhancing air quality within animal confinement facilities, such as swine or poultry barns. Ammonia is a byproduct of animal excrement. Elevated ammonia concentrations can adversely affect the well-being of both animals and humans. The aim of this thesis was to investigate the effects of Ozone Technology Machine Unit (OTMU) utilization in poultry barns regarding ammonia concentration and its potential benefit in terms of broilers performance and welfare. In recent years, there has been a significant boom in technological advances. New devices that help mitigate …

Characteristics Of Award-Winning Children’S Books About Agriculture: An Analysis Of Content, And The Perspectives Of Authors, Illustrators, And Publishers, Addison L. Beckham

Graduate Theses and Dissertations

The purpose of this two-article qualitative study was to characterize children's literature about agriculture and to describe the perceptions of authors and illustrators who are responsible for writing and designing these successful publications. This will result in the ability of organizations like Feeding Minds Press to provide writers, illustrators, and publishers with effective strategies and techniques to improve the accuracy and overall quality of children’s literature about agriculture. Few parameters exist for authors of children’s books about agriculture (Biser, 2007). These parameters are necessary to ensure the quality and accuracy of these educational efforts (Serafini, 2012). Though Feeding Minds Press …

Examining The Hormonal Underpinnings Of Affiliation Motivation In Oral Contraceptive Users, Hormonal Iud Users, And Naturally Cycling Women, Mikayla Tolliver

Graduate Theses and Dissertations

Affiliation is important for women during times of stress. Although, affiliation has been linked to women’s hormones across the menstrual cycle, many women use hormonal contraceptives which disrupt the links between hormones, psychology, and behavior. This study examined how hormonal contraceptives (hormonal IUD vs. the oral contraceptive pill) and menstrual cycle phase (follicular vs. luteal) are associated with affiliative motivations following the Trier Social Stress Test (TSST). Further, this study examined women’s cortisol reactivity and whether cortisol reactivity mediated affiliative motivation following the stressor. I found that oral contraceptive pill users projected more stress and rejection onto others’ faces and …

Demographics, Sexual Dimorphism, And Ecological Aspects Of Ambystoma Annulatum (Ringed Salamander) In Northwest Arkansas, Usa, Brian M. Becker

Graduate Theses and Dissertations

The need to study and monitor amphibian populations is increasing along with the threats to their population stability and persistence in nature. Northwest Arkansas is one of the fastest growing areas in the nation and with that growth comes rapid changes in land use, massive alterations to habitats, habitat loss, and the introduction of nonnative plants and animals. Ambystoma annulatum (Ringed Salamander) is an Ambystomatid endemic to the Ozark and Ouachita Mountains of southern Missouri, northern and western Arkansas, and eastern Oklahoma giving it a relatively small distribution compared to most Ambystoma. Therefore, Arkansas constitutes a significant portion of the …

Diminishing Creative Returns: Predicting Optimal Creative Performance Via Individual Differences In Executive Functioning, Kent F. Hubert

Graduate Theses and Dissertations

A robust finding in creativity research is that during idea generation, later (vs. earlier) responses on a divergent thinking task tend to be more creative, while the number of responses start off quickly, and then slow down over time, termed the serial order effect. Divergent thinking and time may follow a diminishing returns curve, where there is an optimal amount of time that should be spent while generating ideas. Executive functions (inhibition, updating, and shifting) have been associated with divergent thinking, specifically with the idea generation phase, but the effect of individual differences on the temporal dynamics of divergent thinking …