Digital Commons Network^™

Strategies Small Business Leaders Use To Retain Employees To Reduce Turnover Costs, Karla Gilchrist-Saunders

Walden Dissertations and Doctoral Studies

Failure to retain employees negatively affects organizational financial sustainability. Small business leaders become concerned when their organizations fail to retain employees, resulting in increased costs and decreased competitiveness, organizational knowledge, team dynamics, and valuable human resources. Grounded in transformational leadership theory, the purpose of this qualitative pragmatic inquiry study was to identify and explore leadership strategies some small business leaders use to retain employees to reduce turnover costs. The participants were six small business leaders in the Washington, DC, metropolitan area with successful strategies used to retain employees to reduce turnover costs. Data were collected from semistructured interviews and publicly …

The Psychological And Physical Impact Of The Opioid Crisis On Families, Adrienne Antoinette Hunter Wells Green

Walden Dissertations and Doctoral Studies

Many rural areas in the United States have experienced an opioid crisis. Social support programs could be created to address social support for the families affected by opioid addiction. The purpose of this non-experimental, cross-sectional research study was to examine the possible relationship between (a) prescription or non-prescription addiction; (b) opioid addiction or another addiction; (c) the amount of family social support of a family member who has ongoing interactions with the individual struggling with addiction; and (d) stress of the family member in a rural area. Bowen’s family systems theory provided the theoretical framework for the study. A non-probability …

Gene Expression Regulation By Au-Rich Elements And Au-Rich Element Binding Proteins, Courtney Fay Jungers

Arts & Sciences Graduate Student Theses and Dissertations

The regulation of messenger RNA (mRNA) splicing, stability, and translation efficiency are major modes for controlling gene expression – which is essential for life. RNA-binding proteins (RBPs) and microRNAs (miRNAs) are trans-acting factors that bind to cis-elements influencing the stability and translation of the mRNA transcript. AU-rich elements (AREs) are cis-elements that are targeted by AU-rich element binding proteins (ARE-BPs). Here, I show a novel role for AREs and AU-rich element binding protein 1 (AUF1) during alternative splicing and report on interactions of RBPs and miRNAs to design a new treatment for breast cancer by interrupting these interactions in the …

Enhanced Lsmc For Valuation Of Options, Amr Mekawy

Theses and Dissertations

In the world of finance, whether you are a hedger or a speculator, a risk-adverse or a risk-advocate, the use of financial instruments and derivatives will remain pertinent to providing new opportunities for mitigating risks as well as generating profit. Among these instruments are Options, which regardless of their complexity, can be an extremely versatile tool to be utilized across a wide range of different markets.

An option is a derivative that gives the holder the right, but not the obligation to buy or sell the underlying asset either before or at the maturity date of the contract. There are …

Targeting Corticotropin-Releasing Hormone Receptor Type 1 (Crhr1) Neurons: Validating The Specificity Of A Novel Transgenic Crhr1-Flpo Mouse

Faculty, Staff and Student Publications

Corticotropin-releasing hormone (CRH) signaling through its cognate receptors, CRHR1 and CRHR2, contributes to diverse stress-related functions in the mammalian brain. Whereas CRHR2 is predominantly expressed in choroid plexus and blood vessels, CRHR1 is abundantly expressed in neurons in discrete brain regions, including the neocortex, hippocampus and nucleus accumbens. Activation of CRHR1 influences motivated behaviors, emotional states, and learning and memory. However, it is unknown whether alterations in CRHR1 signaling contribute to aberrant motivated behaviors observed, for example, in stressful contexts. These questions require tools to manipulate CRHR1 selectively. Here we describe and validate a novel Crhr1-FlpO mouse. Using bacterial artificial …

Terrestrial Evidence For Volcanogenic Sulfate-Driven Cooling Event ~30 Ka Before The Cretaceous–Paleogene Mass Extinction: Volcanism-Induced Cooling ~30 Ka Pre-K–Pg Boundary, Lauren O'Connor, Rhodri Jerrett, Gregory Price, Tyler Lyson, Sabine Lengger, Francien Peterse, Bart Van Dongen

School of Geography, Earth and Environmental Sciences

Alongside the Chicxulub meteorite impact, Deccan volcanism is considered a primary trigger for the Cretaceous–Paleogene (K–Pg) mass extinction. Models suggest that volcanic outgassing of carbon and sulfur—potent environmental stressors—drove global temperature change, but the relative timing, duration, and magnitude of such change remains uncertain. Here, we use the organic paleothermometer MBT′5me and the carbon-isotope composition of two K–Pg-spanning lignites from the western Unites States, to test models of volcanogenic air temperature change in the ~100 kyr before the mass extinction. Our records show long-term warming of ~3°C, probably driven by Deccan CO2 emissions, and reveal a transient (<10 kyr) ~5°C cooling event, coinciding with the peak of the Poladpur “pulse” of Deccan eruption ~30 kyr before the K–Pg boundary. This cooling was likely caused by the aerosolization of volcanogenic sulfur. Temperatures returned to pre-event values before the mass extinction, suggesting that, from the terrestrial perspective, volcanogenic climate change was not the primary cause of K–Pg extinction.

Recent Trends And Biases In Mesophotic Ecosystem Research, Veronica Z. Radice, Alejandra Hernández-Agreda, Gonzalo Pérez-Rosales, Ryan Booker, Jessica Bellworthy, Manon Broadribb, Gaby E. Carpenter, Clara Diaz, Ryan J. Eckert, Nicola L. Foster, Johanna C. Gijsbers, Erika Gress, Jack H. Laverick, Valerio Micaroni, Miriam Pierotti, Héloïse Rouzé, Angela Stevenson, Alexis B. Sturm, Pim Bongaerts

School of Biological and Marine Sciences

Mesophotic ecosystems (approx. 30-150 m) represent a significant proportion of the world's oceans yet have long remained understudied due to challenges in accessing these deeper depths. Owing to advances in underwater technologies and a growing scientific and management interest, there has been a major expansion in research of both (sub)tropical mesophotic coral ecosystems and temperate mesophotic ecosystems. Here, we characterize the recent global trends in mesophotic research through an updated release of the 'mesophotic.org' database (www.mesophotic.org) where we reviewed and catalogued 1500 scientific publications. In doing so, we shed light on four major research biases: a gross imbalance in (a) …

Examining The Internet Hunting Styles Of Violent Sexual Predators Who Rape And Murder Their Victims, Rebecca Meyers

Walden Dissertations and Doctoral Studies

The proposed study sought to explore the impact of the internet on the hunting styles of sexual predators who sexually assault and kill their victims. A sample of 32 cases, divided equally among offenders who used the internet to target adult females and those who did not use the internet, was used for the study. The findings showed that various internet-based platforms were used for targeting, including dating apps such as Grindr, Match.com, Meetme.com, Tinder, Craigslist, Sex chat rooms, Kik Messenger, and BDSM sites. Three themes emerged about the impact of the internet on the hunting styles of sexual predators …

Suicide Risk Assessment And Student Competency In Cacrep-Accredited Master's Counseling Programs, Meghan Kyle O'Meara

Walden Dissertations and Doctoral Studies

Suicide remains a public health issue, demanding proficient training of future counselors in suicide risk assessment (SRA). However, concerns persist regarding the competency of counselors-in-training (CITs) in this crucial area. This study explored the predictive relationship between theory of planned behavior (TPB) constructs and students’ perceived competency in SRA. Grounded in the TPB, the research addressed how attitudes (ATT), subjective norms (SN), and perceived behavioral control (PBC) influence intentions and subsequent behavior, using a nonexperimental survey design to collect data from students in Council for Accreditation of Counseling & Related Educational Programs (CACREP)–accredited master's counseling programs via a comprehensive questionnaire. …

Strategies Small Business Leaders Use To Retain Employees To Reduce Turnover Costs, Karla Gilchrist-Saunders

Walden Dissertations and Doctoral Studies

Failure to retain employees negatively affects organizational financial sustainability. Small business leaders become concerned when their organizations fail to retain employees, resulting in increased costs and decreased competitiveness, organizational knowledge, team dynamics, and valuable human resources. Grounded in transformational leadership theory, the purpose of this qualitative pragmatic inquiry study was to identify and explore leadership strategies some small business leaders use to retain employees to reduce turnover costs. The participants were six small business leaders in the Washington, DC, metropolitan area with successful strategies used to retain employees to reduce turnover costs. Data were collected from semistructured interviews and publicly …

The Psychological And Physical Impact Of The Opioid Crisis On Families, Adrienne Antoinette Hunter Wells Green

Walden Dissertations and Doctoral Studies

Many rural areas in the United States have experienced an opioid crisis. Social support programs could be created to address social support for the families affected by opioid addiction. The purpose of this non-experimental, cross-sectional research study was to examine the possible relationship between (a) prescription or non-prescription addiction; (b) opioid addiction or another addiction; (c) the amount of family social support of a family member who has ongoing interactions with the individual struggling with addiction; and (d) stress of the family member in a rural area. Bowen’s family systems theory provided the theoretical framework for the study. A non-probability …

A Topological Route To Engineering Robust And Bright Supersymmetric Laser Arrays, Soujanya Datta, Mohammad Alizadeh Fard, Ramy El-Ganainy, Krishanu Roychowdhury

Michigan Tech Publications

In recent years, several proposals that leverage principles from condensed matter and high-energy physics for engineering laser arrays have been put forward. The most important among these concepts are topology, which enables the construction of robust zero-mode laser devices, and supersymmetry (SUSY), which holds the potential for achieving phase locking in laser arrays. In this work, we show that the relation between supersymmetric coupled bosonic and fermionic oscillators on one side, and bipartite networks (and hence chiral symmetry) on another side can be exploited together with non-Hermitian engineering for building one- and two-dimensional laser arrays with in-phase synchronization. To demonstrate …

Beyond The Surface: Understanding Temperature Polarisation In Dcmd Membranes Through Varied Operational Parameters, Hiras Ahamed Hijaz, Masoumeh Zargar, Abdellah Shafieian, Amir Razmjou, Mehdi Khiadani

Research outputs 2022 to 2026

Conventionally, a single Temperature Polarisation Coefficient (TPC) value is calculated to quantify Temperature Polarisation (TP). In this research, the extent of polarisation is investigated by capturing temperature profiles at specific points along a MD membrane using miniature thermocouples, eliminating the need for TPC calculations. The extent of polarisation at a point is affected by two contributory factors, namely the proximity of flow inlets and the difference in vapour pressure across the membrane at that point. Under this direction, this work examined the influence of permeate temperature, feed salinity, and flow direction on the development of the temperature profiles. Our analysis …

Multi-Antigen Elephant Endotheliotropic Herpesvirus (Eehv) Mrna Vaccine Induces Humoral And Cell-Mediated Responses In Mice, Rongsheng Peng, Jie Tan, Paul D Ling

Faculty, Staff and Students Publications

Background/Objectives: Elephant endotheliotropic herpesvirus (EEHV) causes lethal hemorrhagic disease (HD) in Asian and African elephants in human care and the wild. It is the leading cause of death for young Asian elephants in North American and European zoos despite sensitive diagnostic tests and improved treatments. Thus, there is a critical need to develop an effective vaccine to prevent severe illness and reduce mortality from EEHV-HD. We generated a multi-antigenic EEHV mRNA vaccine to address this need that encodes the EEHV1A-subtype glycoproteins gB, gH, gL, and gO. These conserved proteins are the entry machinery for several herpesviruses in the betaherpesvirus subfamily …

Amorfe: An Ai-Integrated Interactive Brainstorming Interface, Ipshita Pal

Theses

Amorfe is an interactive multi-touch digital interface that reimagines brainstorming and collaboration using artificial intelligence (AI). Designed to make ideation more dynamic, the platform allows participants to explore, merge, and refine ideas in real time. AI is a creative catalyst, offering unpredictable outcomes and streamlining the brainstorming process. This makes Amorfe engaging, intuitive, and inclusive, encouraging active participation. The platform’s potential was demonstrated through a hypothetical scenario: “How do we create more green spaces on the RIT campus?” Four participants explored various brainstorming phases through touch interaction, leading to the creation of a prototype simulation video and a promotional video. …

Rental Property Demand And Supply Analysis Using Machine Learning, Ahmed Amiri

Theses

The real estate market in Dubai is famous for its activity and stimulating potential due to the geographical position of the emirate, well-developed transport and legal framework. Timely determination and prediction of rental price is crucial for investors, property owners and managers, tenants and authorities in their decision making to maximize returns and ensure market stability. Traditional approaches are insufficient for the analysis of the temporal and spatial relations between property characteristics and market processes, which require the use of sophisticated machine learning algorithms. This paper aims to predict the rental prices of properties in Dubai using machine learning models …

Social Media Intelligence: Responding To Crime And Violence In The Digital World, Chloe Lynn Sitton

Theses

The integration of social media into everyday life has transformed how crime is committed, communicated, and investigated. This capstone project examines the emerging field of social media intelligence and its growing influence on modern policing, surveillance, and the community. Drawing from sociological theory, law enforcement practice, legal analysis, and community-based research, this project offers a far-reaching interdisciplinary view of how social media is shaping crime and justice in the United States.

Distinct Effects Of Extra- And Intracellular Trehalose Supplementation In Freezing Medium On The Post-Thaw Developmental Capacity Of Feline Oocytes, Saengtawan Arayatham, Wirakan Kallayanathum, Panuwat Padungros, Theerawat Tharasanit

The Thai Journal of Veterinary Medicine

Oocyte cryopreservation is a crucial technique for preserving the genetic material of female cats, yet maintaining post-thaw oocyte developmental competence remains a significant challenge. This study investigated the impact of intra- and extracellular trehalose on the developmental competence of feline oocytes following cryopreservation. In Experiment 1, immature feline oocytes were matured in vitro (IVM) with varying concentrations (0, 1.5, and 3 mM) of intracellular trehalose hexaacetate (Tre-(OAc)6). The matured oocytes were then cryopreserved and thawed prior to in vitro fertilization and embryo culture. Experiment 2 examined the effects of extracellular trehalose supplementation at concentrations of 0, 0.125, 0.25, and 0.5 …

The Four Domains Model Of Artificial Intelligence In Surgical Education: Adapting Applications To Trainee Level, Anant R. Tewari, Jasraj Raghuwanshi, Lawal A. Labaran, Xudong Li

Journal of Innovation in Health Sciences Education

Since the inception of modern medicine, surgical trainees have benefitted from coaching and feedback from senior surgeons. In the high-demand operating room environment, granular feedback is often limited by time constraints. Artificial intelligence (AI) represents a novel frontier in surgical education in that it may be able to provide reliable, objective, and comprehensive feedback in an automated manner. While prior studies have given broad overviews of AI in surgical training, there has been no study to our knowledge that has codified the myriad applications and offered guidance for which applications best suit trainees at various levels of surgical education. We …

Integrating Supports To Meet The Needs Of The Whole Child, Rebecca Wright, Deshonda Stringer

Georgia Association for Positive Behavior Support Conference

Georgia Multi-Tiered System of Supports (GaMTSS) is a data-driven, multi-level prevention system designed to meet the needs of the whole child by implementing a continuum of tiered supports. This session will discuss the integration of academics, behavior, and well-being which is essential for student and educator success. These supports play a critical role in impacting positive school climate. An overview of the five essential components of GaMTSS, with an emphasis on building a strong infrastructure, will also be discussed.

The Private Cause Of Action Under Maine's Unfair Trade Practices Act, Steven A. Shaw

Maine Law Review

In 1970 the Maine Legislature passed the Unfair Trade Practices Act (UTPA) which declared unlawful any "unfair methods of competition and unfair or deceptive acts or practices in the conduct of any trade or commerce . . . ." UTPA-type statutes, now common to all states, offer several advantages. The statutes provide for a statutory award of attorneys' fees, create a private cause of action which is simple in comparison to analogous common law claims, and offer a flexible concept of unlawful conduct which many courts have shown a willingness to interpret broadly and sympathetically. Although Maine's UTPA was originally …

Supplements To Environmental Impact Statements: Implementation Of The Standards Set By The Council On Environmental Quality, Dale Lynn Gavin

Maine Law Review

Environmental impact statements (EISs) are prepared before any major federal project is undertaken, as required by the National Environmental Policy Act (NEPA). An original EIS may become obsolete if a Project's operation later changes in any significant way, or if previously unsuspected environmental impacts are later discovered. When either of these two events occurs, compliance with NEPA demands that a supplemental EIS be prepared to focus on the changes. The decision whether a supplement is required in any particular situation is guided by standards set by the Council on Environmental Quality (CEQ). In addition, some federal agencies have promulgated their …

Comeau V. Maine Coastal Services: The Quantum Theory And The Rescue Doctrine In Workers' Compensation, George F. Eaton Ii

Maine Law Review

Section 51 of the Maine Workers' Compensation Act provides that in order to be compensable, an employee's injury must arise out of and occur in the course of the employment. The decision of the Maine Supreme Judicial Court in Comeau v. Maine Coastal Services upheld the Workers' Compensation Commission's denial of the plaintiff's petition for an award of compensation. In reaching its decision, however, the Law Court departed from the long-settled analytical approach of treating the "arising out of" and the "in the course of" requirements as separate criteria both of which must be met in order to establish a …

Global Historical Tsunami Database, Andrew Allegra

Benefits of Ocean Observing Catalog (BOOC)

The Historical Tsunami Database contains information on tsunami sources and locations where tsunami waves were observed by eyewitnesses, field reconnaissance surveys, tide gauges or deep-ocean sensors.

Pmp2+ Scs Maintain The Survival And Functioning Of Large-Caliber Motor Axons, Mikolaj Kozlowski

Arts & Sciences Electronic Theses and Dissertations

Neurodegenerative diseases are characterized by selective neuronal vulnerability, a phenomenon in which a specific pathology induces the death of a particular subpopulation of neurons. For example, selective neuronal vulnerability in the peripheral nervous system results in sensory, motor, or mixed peripheral neuropathies. While the intrinsic differences between neuronal subtypes cannot fully explain the basis of selective neuronal vulnerability, it is plausible that it partially stems from neuron extrinsic mechanisms such as the malfunction of distinct Schwann cell (SC) subtypes. Recently, we identified an exciting subpopulation of myelinating SCs characterized by the expression of Adamtsl1, Cldn14, and Pmp2 (hereafter referred to …

Improving Clinical Information Extraction From Electronic Health Records: Leveraging Large Language Models And Evaluating Their Outputs, Kriti Bhattarai

McKelvey School of Engineering Theses & Dissertations

Accurate extraction of clinical entities and phenotypes from unstructured electronic health record (EHR) text is crucial for various clinical research tasks, including cohort identification, tracking temporal patterns in disease progression and deciding treatment course. However, this task remains challenging due to the complexity and ambiguity of medical language. This dissertation explores the application of advanced generative pre-trained transformer (GPT) models, such as GPT-4, GPT-3.5-turbo, Llama-3.1, Llama-3 and Flan-T5, for clinical entity and phenotype extraction from EHRs. Building upon these findings, this dissertation also investigates a hybrid approach where integration of external knowledge sources, such as Unified Medical Language System (UMLS) …

Phosphorus Adsorption Capacity Of Volcanic Scoria, Easton Jeffrey Perkins

Theses and Dissertations

Phosphorus (P) pollution in stormwater runoff poses a significant threat to water quality, contributing to eutrophication and ecosystem degradation. This research evaluates the potential of volcanic scoria (VSco), an abundant and cost-effective resource in Utah, USA, to influence P concentrations in urban stormwater systems. Batch adsorption experiments examined the behavior of VSco across three particle sizes—fine (<0.841 mm), medium (0.841–2 mm), and granular (2.38–9.5 mm)—under conditions mimicking stormwater scenarios. The results reveal that fine VSco exhibited higher adsorption efficiency than medium and granular sizes, achieving notable P removal at higher concentrations. However, at lower concentrations, fine VSco showed potential for P release due to desorption of pre-existing P. Medium and granular VSco showed minimal adsorption capacity and, in some cases, acted as P sources, highlighting a dual potential depending on stormwater conditions. Adsorption isotherms indicate that the adsorption behavior of fine VSco aligns with the Langmuir model, with a finite and relatively low adsorption capacity. Calculated distribution coefficient (Kd) values for fine VSco ranged from 0.04 to 0.005 L/g, indicating weak adsorption efficiency compared to materials like activated carbon (1–10 L/g) or soils with moderate adsorption capacity (0.1–0.5 L/g). Loss-on-ignition tests confirmed that VSco’s performance is driven by its physical and chemical properties, particularly its calcium content, rather than organic matter. The study emphasizes caution in applying fine VSco for stormwater remediation due to its potential to release P under typical runoff conditions. However, fine VSco may still be viable in specific scenarios where P levels are higher, such as in stormwater hotspots or localized areas with elevated concentrations, allowing for targeted remediation. The research underscores the need for further testing to refine VSco’s applications, particularly in low-impact development (LID) practices, such as infiltration basins and rain gardens, to effectively manage P levels while supporting ecological and aesthetic goals. These findings contribute to understanding the complex role of VSco in urban stormwater systems, offering insights for sustainable water quality management and nutrient cycling in urban landscapes.

Artificial Intelligence-Based Methodologies For Early Diagnostic Precision And Personalized Therapeutic Strategies In Neuro-Ophthalmic And Neurodegenerative Pathologies, Rahul Kumar, Ethan Waisberg, Joshua Ong, Phani Paladugu, Dylan Amiri, Jeremy Saintyl, Jahnavi Yelamanchi, Robert Nahouraii, Ram Jagadeesan, Alireza Tavakkoli

SKMC Student Presentations and Publications

Advancements in neuroimaging, particularly diffusion magnetic resonance imaging (MRI) techniques and molecular imaging with positron emission tomography (PET), have significantly enhanced the early detection of biomarkers in neurodegenerative and neuro-ophthalmic disorders. These include Alzheimer's disease, Parkinson's disease, multiple sclerosis, neuromyelitis optica, and myelin oligodendrocyte glycoprotein antibody disease. This review highlights the transformative role of advanced diffusion MRI techniques-Neurite Orientation Dispersion and Density Imaging and Diffusion Kurtosis Imaging-in identifying subtle microstructural changes in the brain and visual pathways that precede clinical symptoms. When integrated with artificial intelligence (AI) algorithms, these techniques achieve unprecedented diagnostic precision, facilitating early detection of neurodegeneration and …

Early Considerations And Estimates For The Performance Of An Alaska-Based Earthquake Early Warning System, Alexander Fozkos

Geosciences

The complexity of Alaska presents several challenges for earthquake early warning systems. These include the presence of offshore earthquakes, transform boundaries and crustal faults extending hundreds of kilometers, deep earthquakes, and a complicated coastline. This variety, combined with population centers spread far apart, makes it challenging to anticipate an earthquake early warning system's performance and to design a network accordingly. As Alaska begins to plan for earthquake early warning, our objective is to envision how and how well it might function in Alaska. We present here sets of scenarios with warning time and ground motion estimates for a variety of …

Creating A Digital House Of Knowledge: Ensuring The Continuation And Integrity Of Indigenous Knowledge Transfers In The Digital Era, Jacquelyn C. Cordova

Indigenous Studies

Traditional Indigenous knowledge transfer systems have contributed to the sustainability of highly advanced Indigenous societies since time immemorial. These systems have been purposefully targeted since European arrival to the Americas in the late 1400s and early 1500s, consequently creating barriers for Indigenous Peoples as they strive to conduct their traditional knowledge transfer processes within their communities. These barriers, paired with the continual rise and use of global technologies, have created circumstances where many Native Elders and Knowledge Keepers experience difficulty reaching their youth and community members to ensure the successful transfer of Indigenous data and knowledge to current and future …