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Reinterpreting Stochastic Optimal Control Under Ecological Uncertainty: Inferring Decision Urgency From Vegetation Biomass Dynamics, Komi Mensah Agboka, Tobias Landmann, Elfatih M. Abdel-Rahman

All Peer-Reviewed Publications

Stochastic optimal control provides a rigorous framework for systems subject to uncertainty, yet its operational use in ecological crisis contexts remains limited by interpretability. We reinterpreted a stochastic control formulation in which selected parameters emerged as indicators of decision urgency rather than normative preferences. Vegetation biomass was modeled as a stochastic stock subject to nonlinear loss driven by feeding pressure (e.g., desert locust activity) and multiplicative noise, with uncertainty represented by a time-varying volatility term that integrated extreme rainfall anomalies and conflict-related disruption. Rather than prescribing an optimal policy, we inverted the closed-form solution of the control problem to infer …

2026 Annual Report, Tennessee. Department Of Human Services

Annual Reports

This annual report highlights the accomplishments of the Department of Human Services for the fiscal year.

The Colorado River: Searching For Solutions In The Face Of Uncertainty: Conference Summary, Emilia Endara, Douglas Kenney

Books, Reports, and Studies

The Colorado River is facing unprecedented change and uncertainty. Average annual flows continue to decline, and negotiations to craft post-2026 guidelines to manage the river have repeatedly bogged down in disagreements about delivery obligations, sharing shortages, and mandatory conservation. While some clarity may emerge in the coming months, the ability to sustain many existing municipal and agricultural water users is already being compromised. Meanwhile, there is growing recognition that a durable resolution must also address the water rights of sovereign Tribal Nations and better integrate environmental values into river management. All sovereigns, stakeholders, and sectors must work together now more …

Thirst For Data: State Responses To Data Center Water Use, Daniel Anderson, Sydney Stellato

Books, Reports, and Studies

No abstract provided.

Employment Preferences Of Favela Residents, Mayara Felix, Beatriz Marcoje, Ieda Matavelli, Maria Clara Rodrigues

Cowles Foundation Discussion Papers

We document employment preferences of workers at the margin of informality using open-ended questions and discrete choice experiments in Brazil’s largest favela complex. Stated preferences emphasize pay and tangible job benefits rather than meaning or purpose, while primary complaints center on poor management, customers, and inflexible schedules. Workers exhibit high valuations for all formal sector amenities on average—unemployment insurance, parental leave, and termination notice—as well as for learning opportunities, but lower for non-formal sector amenities such as shorter commutes. Valuations vary systematically by employment sector in ways consistent with sorting: formal workers value formal amenities most, the self-employed value them …

Pamphlet, The Great Book, Ellen Davies-Rodgers, 1973

Documents

A pamphlet advertising, "The Great Book, Calvary Protestant Episcopal Church, 1832-1972, Memphis, Tennessee" by Ellen Davies-Rodgers, published by The Plantation Press, Davies Plantation Road, Brunswick, Tennessee, 1973.

Streamlining Literacy Assessment, Sheila Mulder, Katie Anderson, Samuel W. Flint

Annual Research Symposium

Reading proficiency scores are low throughout the nation. Reading proficiency is a foundational skill that supports academic success across all content areas. Skilled reading involves multiple interrelated components. Assessment can support teachers to identify skill deficits and inform instruction; however, rural teachers lack the time, resources, and specialized support to translate the data into effective instruction and interventions. To better contextualize this need, we received 59 surveys from South Dakota teachers with 23 of the surveys being valid responses, finding that teachers feel prepared to teach reading and struggling readers. Teachers reported that they spend relatively little time in assessment, …

Secure-Home: Detect And Redact Pii, Hajar Niroomand, Omar F. El-Gayar

Annual Research Symposium

Personally Identifiable Information (PII) leakage from home environments poses significant identity theft risks. While enterprise networks employ robust security measures, firewalls, intrusion detection systems, and access controls, these protections rarely extend to home settings, creating a critical security gap. Current firewall technologies lack the capability to detect and scrub PII from outbound traffic, leaving vulnerable populations such as children, elderly users, and remote workers exposed. This design science research proposes Secure-Home, a prototype outbound inspection tool that detects and redacts clear-text PII before data leaves home networks. Using rule-based detection and selective redaction, Secure-Home provides a practical last line of …

Geospatial Analysis Of Sinkhole Density And Characteristics In West Virginia, Marissa Shannon Loftus

Graduate Theses, Dissertations, and Problem Reports (ETD)

Creation of a sinkhole map of West Virginia provides useful data to help identify areas susceptible to sinkhole related hazards, as well as allowing for detailed analysis of factors controlling karst development. Newly available, statewide LiDAR-derived digital elevation data have made mapping sinkholes over larger spatial extents feasible. For this study, sinkholes were mapped for all areas of West Virginia that are underlain by carbonate rocks; then the distribution and characteristics were evaluated overall and in four focus areas (Berkeley and Jefferson counties, Pendleton County, Greenbrier County, and Monroe County). These areas correspond to broader physiographic regions, with Berkeley, Jefferson, …

Gcn5l1-Mediated Lysine Acetylation Regulates Mitochondrial Dysfunction In The Aged Heart, Jackson Edmond Stewart

Graduate Theses, Dissertations, and Problem Reports (ETD)

For over a century, cardiovascular disease (CVD) has been and remains the leading cause of death globally. CVD risk and severity increase significantly with advanced age, and mitochondrial dysfunction has been implicated in the pathogenesis of aging. Furthermore, mitochondrial health is crucial for cardiac function, as one-third of total cardiomyocyte volume is occupied by mitochondria in order to meet the high energy demand of contractile and relaxational function. It is thus crucial that we understand the pathological mechanisms driving mitochondrial dysfunction in aging and how this contributes to age-associated cardiovascular disease. The current manuscript aims to fill this knowledge gap …

Facial Aesthetics And The Esthetic Plane: Effects Of Modern Lip Trends, Allison Paige Fritz

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives: The objective of this study is to evaluate whether there is a difference in aesthetic preferences of lip position between dental professionals and the general public, which we will refer to throughout the paper as lay people. In addition, age and gender differences will be determined to evaluate whether there is a need to re-evaluate the accepted normative values for lips to Esthetic plane (E-plane).

Experimental Design and Methods: A cross sectional, observational study design was used. The study aim was to evaluate the perception and opinions regarding lip position and fullness of both lay people …

Divided Loyalties: Military Recruitment And Emancipation In Kentucky, Jacob Joseph Klinger

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores how Unionist Kentuckians leveraged their military recruitment to negotiate the scope of federal emancipation during the American Civil War. By 1863, the War Department’s need for troops superseded the racial sensitivities of inhabitants in loyal slave states like Kentucky by promising to free and enlist Black men if white recruits failed to fill the quota. Kentucky’s proslavery Unionists responded and white volunteerism surged by 23 percent, 10 percent more than the national average, to fill the quota and negate military emancipation. Kentucky leaders heralded the recruiting effort but struggled to sustain it alongside an uncredited militia which …

Assessment Of Countermovement Jump In Athlete Status And Monitoring, Michael David Delong

Graduate Theses, Dissertations, and Problem Reports (ETD)

Utilizing a CMJ to test athlete physical abilities and training program efficacy is popular, as it is simple, noninvasive, and has significant relations with sport qualities. However, assessments often use discrete outcome measures. This research explored strategy-based measures accounting for eccentric power and time and may explain athlete status more effectively. The research objectives are to analyze the use of the mean power rate of the CMJ to compare athletes' playing ability and its usefulness in monitoring during off-season training. Additionally, power-time curve analysis added location and timing of effects due to fatigue or fitness adaptation. Proper testing and monitoring …

White Lies Of Time: Temporal Racialization In 19th-20th Century American Literature, Yu Uchida

Graduate Theses, Dissertations, and Problem Reports (ETD)

By examining mid-nineteenth to mid-twentieth century American literary texts, this dissertation project aims to theorize the ways in which whiteness relies on conceptualizations of time to hegemonize non-white subjects and prescribe their historical representations. Because whiteness is dynamic in its emergence and effects and ubiquitous in sociopolitical and cultural realms, this dissertation holistically turns to white, Black, and Indigenous writers to delineate how whiteness functions throughout the period and how racialized subjects negotiate it. Portraying the nation’s history as lived experience rather than objectified knowledge, the racialized authors I examine undermine the concept of linear progressive time that subtends structural …

High-Resolution Laser Diagnostics For Ion Measurements In Magnetized Plasmas, Katey Stevenson

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this work, we investigate ion heating in two plasma systems (helicon plasmas and flux rope plasmas) using the PHAse Space MApping (PHASMA) experiment. Our studies rely on high-resolution laser diagnostics, specifically laser-induced fluorescence (LIF), to measure ion velocity distribution functions (IVDFs). The temperature and bulk flow of each species are inferred from their respective VDFs. This dissertation is organized into three main parts: the study of ion heating in helicon plasmas, pulsed LIF modeling and diagnostic development, and the study of ion heating in flux rope plasmas. Helicon plasma sources efficiently generate high-density plasmas and are widely used to …

Three Essays On Option Markets, Fangzheng Ou

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation includes three essays examining index option and stock option markets. The first essay investigates the pricing kernel puzzle by examining S&P 500 index option returns and empirical pricing kernels across expiration dates ranging from one month to one year. We document that at short maturities, out-of-the-money call option returns are negative and decrease with the strike price, while at long maturities, at least some are positive and increase with the strike price. Empirical pricing kernels predominantly exhibit a W-shape at short maturities, with this pattern becoming less pronounced and evolving toward a monotonically decreasing curve at longer maturities. …

Congolese Journalists: Professional Identity And Legitimacy, Hannah L. Heiskell

Graduate Theses, Dissertations, and Problem Reports (ETD)

This paper examines how Congolese journalists construct their professional identity

and legitimacy while working under conditions of conflict and state pressure, and how

international media outlets discursively represent them through Western journalistic norms.

Addressing previous research and centering local perspectives, this study uses critical

discourse analysis to compare language, framing, and narratives across Congolese and

international media texts, and the works in which they produce. Attention is given to how

agency, professionalism, and constraint are represented within each discourse. The analysis

focuses on metajournalistic discourse, or journalism talking about journalism, to examine

how professional norms and boundaries are articulated and …

Back To The Office Or Out The Door: The Impact Of Return-To-Office Mandates On Employee Well-Being And Turnover Intention, Charlotte Renee Nelson

Graduate Theses, Dissertations, and Problem Reports (ETD)

The widespread adoption of remote work during the COVID-19 pandemic significantly altered traditional workplace arrangements. As organizations increasingly implement RTO mandates, questions have emerged about how these changes affect employee well-being and turnover intentions. Guided by the Job Demands–Resources framework, this study examined the relationship between RTO mandates and two employee outcomes: employee well-being and turnover intention. The study also tested whether work engagement mediated these relationships and whether perceived organizational support and work stressors moderated the relationship between RTO mandates and work engagement.

A quantitative, non-experimental, cross-sectional survey design was employed. Data were collected from 229 U.S. employees working …

Exploring Shared Experiences As Citizen Sport Diplomats: A Collaborative Self-Ethnography, Randall J. Griffiths, Jacob K. Tingle, Angela Breidenstein

School of Business Faculty Research

Research purpose: This study was a critical analysis of the lived experiences of three American university professors who served as volunteer citizen diplomats in a bi-lateral U.S. State Department sport exchange program with North Macedonian volleyball coaches.

Research methods: With the aim of capturing the experience of serving as citizen sport diplomats and making sense of it to inform future practice, this research utilized a collaborative self-ethnography approach. This reflexive approach brings together: (a) analytic autoethnography as individuals themselves are engaged in the ethnography and study, and (b) collective ethnography as a team collects and makes sense of shared data …

Genocide And Politicide: The Psychology Of State Terrorism, Clark Mccauley

Psychology Faculty Research and Scholarship

This chapter reviews the psychologies that enable mass killing of civilians by government (politicide). A typology of perceived threats is advanced, with special attention to contamination threat and essentializing the enemy. Three groups of actors are distinguished: perpetrators, leaders, and the mass public that leaders and actors claim to represent. Predictors of genocide are considered, highlighting the importance of means and opportunity.

In Search Of The Soul Of Creativity: Authorship, Agency, And Meaning In Refractive Collaboration With Generative Ai, Fatima Nazir

Theses and Dissertations

When images can be generated in seconds, what remains uniquely human in the act of creation? In Search of the Soul of Creativity: Authorship, Agency, and Meaning in Refractive Collaboration with Generative AI investigates where authorship, agency, and meaning reside within design practices mediated by generative AI. Rather than using AI to produce predictable results, this research deliberately relinquishes control to observe how generative systems interpret language through their own learned associations. Through a practice-led investigation across four generative models within the Higgsfield platform, user prompts were progressively shortened from full sentences to single words, revealing recurring patterns and cultural …

Markov Chain Wave Generative Adversarial Network For Bee Bioacoustic Signal Synthesis, Kumudu Samarappuli, Iman Ardekani, Mahsa Mohaghegh, Abdolhossein Sarrafzadeh

Electrical & Computer Engineering Faculty Publications

This paper presents a framework for synthesizing bee bioacoustic signals associated with hive events. While existing approaches like WaveGAN have shown promise in audio generation, they often fail to preserve the subtle temporal and spectral features of bioacoustic signals critical for event-specific classification. The proposed method, MCWaveGAN, extends WaveGAN with a Markov Chain refinement stage, producing synthetic signals that more closely match the distribution of real bioacoustic data. Experimental results show that this method captures signal characteristics more effectively than WaveGAN alone. Furthermore, when integrated into a classifier, synthesized signals improved hive status prediction accuracy. These results highlight the potential …

An Explainable Cs-Mitigation Triangular (Ecsmt) Framework To Secure Graph Neural Networks, Sabah Ettahri, Sergio Pallas Enguita, Chung-Hao Chen, Wen-Chao Yang

Electrical & Computer Engineering Faculty Publications

This research addresses cyber risk by defending against backdoor attacks on Graph Neural Networks (GNNs). We propose the Explainable Complex System-Mitigation Triangular (ECSMT) Framework, which integrates Robust Training, Graph Regularization, and Data Sanitization into a lightweight, hardware-efficient defense layer. To evaluate structural generalizability, we conducted empirical evaluations across three distinct benchmark domains (AIDS, MUTAG, and PROTEINS) using a Graph Isomorphism Network (GIN) backbone. Under a baseline 5% backdoor subgraph trigger injection ratio, ECSMT achieves excellent utility retention, securing a Clean Accuracy (CA) of 97.33% (±0.62%) while reducing the Attack Success Rate (ASR) from 97.00% down to 69.45% on the primary …

Dynamic Direct Voltage Control Under Maximum Torque Per Ampere For Interior Pmsms, Mohamad Alzayed, Hicham Chaoui, Alaref Elhaj

Electrical & Computer Engineering Faculty Publications

A novel method for controlling the speed of interior permanent magnet synchronous motors (IPMSMs), known as the current-sensing-based dynamic direct voltage control method under the maximum torque per ampere (MTPA) concept, is introduced. This technique achieves precise tracking of machine velocity by determining the optimal combination of voltage amplitude and angle for each specific motor velocity and current/load condition. Unlike previous studies, this approach takes into account the transient model of the machine, resulting in improved accuracy during dynamic operating conditions compared with existing methods in the literature. Moreover, a comparative analysis is conducted involving different direct voltage MTPA speed …

Generalized Inverter Fault Detection Using Normalized Current Features And A Lightweight Bilstm Network, Mohammad Zamani Khaneghah, Mohamad Alzayed, Hicham Chaoui

Electrical & Computer Engineering Faculty Publications

Fault detection and diagnosis of three-phase inverter-fed motor drives is essential for ensuring system reliability, safety, and continuous operation in applications such as electric vehicles and industrial automation. This paper proposes a data-driven fault detection framework based on normalized current features and a lightweight bidirectional long short-term memory (BiLSTM) network which can be generalized to different motor power rating in the same controller system. A compact set of six time-domain features, consisting of the mean and root-mean-square (RMS) values of the phase currents, is extracted and normalized with respect to the average RMS value. This normalization effectively removes dependency on …

Generative Ai-Driven Optimization In Flexible And Reconfigurable Manufacturing Systems, Salah Hammedi, Hicham Chaoui, Lotfi Nabli

Electrical & Computer Engineering Faculty Publications

Flexible and Reconfigurable Manufacturing Systems (FRMSs) are essential for coping with variability in modern production environments; however, efficient scheduling and rapid reconfiguration remain challenging. This paper presents a hybrid optimization framework that integrates Colored Petri Net (CPN) modeling with Generative Artificial Intelligence (GenAI) to enhance scheduling performance and system adaptability. The CPN formalism ensures verifiable modeling of system dynamics, while a transformer-based generative model produces candidate scheduling and reconfiguration strategies. Simulation experiments were conducted under static, dynamic, and adaptive scenarios, including machine breakdowns and dynamic job arrivals. Performance was evaluated using makespan, mean flow time, machine utilization, and reconfiguration latency. …

Automated Writer And Acquisition-Condition Classification Of Digitally Captured Handwriting Using Statistical Dynamic Features And Support Vector Machines, Long-Huang Tsai, Hsiang-Ju Lai, Wen-Chao Yang, Jiajun Jiang, Chung-Hao Chen

Electrical & Computer Engineering Faculty Publications

Digitally captured handwriting preserves pen trajectories and dynamic signals, but it also records hardware- and input-dependent properties that can confound forensic interpretation. This study revises a support vector machine (SVM) screening framework using 16,500 samples from 30 writers, 11 writing-content categories, and five acquisition conditions spanning three tablets and stylus or finger input. Twenty-four raw and derived time-series variables were summarized by maximum, minimum, mean, median, and standard deviation, yielding 120 features; the mode statistic was removed. Writing direction and angular velocity were recalculated with atan2-based vector formulas. Unavailable device/API channels were encoded as zero, and Z-score parameters were estimated …

Exploring The Intersectionality Of Sociodemographic Factors And Adverse Childhood Experiences That Impact College Performance, Taylor June Brown

Graduate Theses, Dissertations, and Problem Reports (ETD)

Success in higher education is influenced by a range of social and economic factors that do not affect all students equally. This thesis examined how Adverse Childhood Experiences (ACEs), socioeconomic status (SES), first-generation college status, minority status, and geographic isolation independently and multiplicatively relate to academic outcomes. Using data from 775 first-year students at a large public university in rural Appalachia, this study assessed whether these factors independently and/or multiplicatively predicted first-year GPA and odds of dropping out. ACEs linearly predicted first-year cumulative GPA and odds of dropping out. A significant ACE x Race interaction emerged for predicting first-year cumulative …

Do Transdiagnostic Factors Predict Emotion Recognition?, Grace L. Wheeler

Graduate Theses, Dissertations, and Problem Reports (ETD)

While emotion recognition deficits have been found in several anxiety and related disorders (e.g., social anxiety, obsessive-compulsive), consistent results have not been established. To clarify the relationship between emotion recognition abilities and anxiety, the current study tested if transdiagnostic factors related to anxiety are predictors of emotion recognition abilities. Data was analyzed from participants (N = 188) recruited via CloudResearch; they completed measures of three transdiagnostic factors related to anxiety (e.g., anxiety sensitivity, intolerance of uncertainty, and rumination), followed by an emotion recognition task. Multiple regression analyses revealed higher levels of anxiety sensitivity predicted worse recognition for anger, disgust, …

Undermining Discretion: The Selective Attacks On Progressive Prosecutors, Angela J. Davis

Scholarly Articles in Law Reviews & Journals

Prosecutors are the most powerful officials in the criminal legal system. They decide whether to bring criminal charges and what those criminal charges should be. These decisions are totally within their discretion. The U.S. Supreme Court has consistently protected the power and discretion of prosecutors in making these decisions, and legal challenges to the exercise of prosecutorial discretion have been largely unsuccessful.

In recent years, a growing number of individuals have successfully run for chief prosecutor on platforms of reducing the prison and jail populations, consistent with public safety. They pledged to use their power and discretion to implement policies …