Digital Commons Network^™

A Geospatial Assessment Of Groundwater Salinization In A Multi-Aquifer System: Durango, Mexico, Juan Lopez-Sierra

Graduate Theses/Dissertations

Groundwater salinization poses a critical environmental concern for water resource sustainability in arid and semi-arid regions. This study evaluates spatial and temporal patterns of groundwater salinity across the state of Durango, Mexico, using total dissolved solids (TDS), sodium adsorption ratio (SAR), as salinity indicators and nitrate-nitrogen (NO₃–N) as an anthropogenic indicator. Groundwater quality data were obtained from (CONAGUA), a Mexican water agency. To assess salinity variations with respect to time, while minimizing interannual sampling bias, two multi-year sampling periods were selected: 2012-2013, and 2020-2021. Final datasets consisted of 122 wells for 2012–2013 and 131 wells for 2020–2021. The wells were …

The Ones Who Watched: Technology, Proxy Warfare, And The Testing Ground Hypothesis, Sean J. Oliver

Graduate Theses/Dissertations

Great powers need laboratories for war. This thesis argues that great powers find these laboratories in proxy forces. Proxy warfare is not just a tool for strategic influence. It is a machine for experimentation. This study posits a central testing-ground hypothesis. It contends that great powers deliberately use surrogates to vet emerging technologies, doctrines, and mobilization schemes under the pressure of real combat. The analytical methodology is historical. It traces patterns from the ancient world's proxy forces and the innovations of the Crusades to the Cold War and the digital age. The thesis examines enduring patterns, including the tension between …

Stopping The Buck: What Made The Truman Committee Uniquely Successful In Its Oversight Of World War Two Military Contracts, Victoria Kelley-Chiarelli

Graduate Theses/Dissertations

During World War Two, Harry S. Truman led the Senate Select Committee to Investigate the National Defense Program, also known as the Truman Committee, in its oversight of military contracts and the war effort. The Truman Committee saved the U.S. government billions by identifying and discouraging waste, fraud, and abuse, and saved many armed forces personnel’s lives through identifying defective products. Truman’s background in World War One service and his time as a local official in Missouri show signs of the integrity and commitment to good governance that made the Truman Committee so successful. The Truman Committee’s membership, staff, principles, …

The Room That Remembers: A Sanctuary Built From Silence, Kayla Brown

Graduate Theses/Dissertations

This installation is a process-based paper artwork that seeks to protect, enlighten, and discover what healing can be in silence. Through the creation of immersive art objects and experiences, I seek understanding and resolutions for my lived experiences. I utilize the physicality of paper in conjunction with the fragility of topic to enhance the meaning behind my material choices. I transform the idea of a traumatic room into an activated space of healing: one that rest, time, and momentary silence exist as choice rather than by force.

Twelve Preludes, Sarah Miller-Ross

Graduate Theses/Dissertations

This set of 12 Preludes for solo piano draws inspiration from Chopin’s set of 24 Preludes for the same instrument, along with ideas from other composers and various genres to create a varied set in which each piece is centered around a note of the 12-note chromatic scale. The movements are titled based on the material that inspired them, the effect they create, or the special technique or limitation they used. A brief overview of inspirational material will be discussed, then each movement will be described through the lens of their compositional processes.

31p Solution Nmr Investigation Of Abasic Dna, Clarissa R. Krimmel

Graduate Theses/Dissertations

Base excision repair (BER) mechanisms fix single base lesions in DNA, such as T:G mismatches. During the base excision repair mechanism, an abasic site (AP site) is formed as an intermediate. AP sites are unstable and highly mutagenic; they can stop DNA replication. This research investigates how the conformational properties of abasic sites in DNA affect the binding recognition of enzymes involved in DNA repair mechanisms, including BER. Three different abasic sequences are being analyzed for this research project. A second project looks at the effects of a naturally occurring purine derivative, hypoxanthine, on the DNA backbone. These hypoxanthine lesions …

Corpus Meum, Mea Electio, Kara L. Coonrod

Graduate Theses/Dissertations

The right to bodily autonomy and reproductive freedom is something I hold very close to my heart. Women who did not wish to embrace motherhood, or who grew beyond the walls of the hearth and home, have been far more often persecuted than praised. Over the past two years, I have created artwork borrowing the visual and material language of the Catholic church (along with personally relevant folklore) to elevate my freedom of choice and bodily autonomy in the face of religiously driven political oppression. Using a less frequently referenced organ from my reproductive system to represent my struggle against …

The United States' Nuclear Deterrent Outlook: Strategies, Challenges, And Future Prospects, Jonathon L. Beening

Graduate Theses/Dissertations

This study contends that the United States cannot sustain a credible nuclear deterrent through the mid-21st century without modernizing its aging nuclear arsenal and revising its nuclear doctrine to address emerging technological, geopolitical, and strategic threats posed by both near-peer adversaries and non-state actors. Through an examination of deterrence theory, historical developments, current force posture, modernization initiatives, doctrinal debates, counterarguments, and prospective geopolitical scenarios, this research assesses the adequacy of existing policies in maintaining strategic stability. The analysis concludes that credible deterrence in the coming decades will require integrated modernization, doctrinal clarity, and strategic adaptability to face any future threat …

Herp Count 2025, Camryn Gulledge

Graduate Theses/Dissertations

Herp Count 2025 is a process-based project in which I log and document every herp (reptile or amphibian) I encounter in the wild while investigating the realities of human impact on ecosystems. During 2025, I observed 1,406 individual herps, most of which appeared not in remote wilderness but in the compromised margins of human spaces. When I observe them in a littered area, I collect nearby trash and bring it back to my studio to combine it with a detailed drawing of that specific individual. In my Contact series, I use a clean-touch printmaking process that involves a stretched plastic …

Remediation Impacts Metal Concentrations And Metal Tolerant Bacteria In Soils Of The Missouri Tri-State Mining District, Ophelia R. Pettington

Graduate Theses/Dissertations

After over 100 years of Zn and Pb mining in the Tri-State mining district (TSMD), former mines continue to be sources of metals. Metal contaminated soils can be remediated using plant-microbe interactions. Plants manipulate their microbiome and recruit microbes to increase metal tolerance. Remediating bacteria are site-specific and identifying native microbes can accelerate remediation efforts. Studies relating microbes and metal concentrations in remediated areas in the TSMD are scarce. I collected root and bulk zone soils associated with Andropogon virginicus from remediated and non-remediated sites in Webb City, MO. I used 16S rRNA gene amplicon sequencing to evaluate the bacterial …

Heterogeneous Robots Cooperation Via Multi-Agent Reinforcement Learning, Rehab Uddin Shawon

Graduate Theses/Dissertations

Enabling heterogeneous robots with diverse capabilities, roles, and task responsibilities to coordinate effectively in complex, dynamic environments remains a fundamental challenge in autonomous multi-robot systems. Multi-Agent Reinforcement Learning (MARL) provides a promising framework for decentralized cooperation. However, most existing MARL approaches assume homogeneous agents or fixed single-task settings and suffer significant performance degradation as the number of robot and task types increases. This thesis presents a scalable shared-policy MARL framework that allows heterogeneous robots to learn specialized behaviors for individual, sequential, and collaborative tasks involving temporal and spatial dependencies through a single neural policy. I first embed robot identity directly …

The Effect Of Sex On A-To-I Editing In Skeletal Muscle During Inflammation, Skyler Lee

Graduate Theses/Dissertations

Adenosine-to-inosine (A-to-I) RNA editing is a post-transcriptional mechanism mediated by ADAR enzymes that can alter RNA sequence, protein function, and gene regulation. Because ADAR1 is upregulated during inflammation and plays a critical role in innate immunity, previous studies investigated the effects of acute inflammation on RNA editing in male and female mice. Lipopolysaccharide (LPS) was used to induce inflammation, and RNA editing levels were examined in the heart, brain, and skeletal muscle. While editing levels in the heart and brain remained unchanged, skeletal muscle exhibited tissue- and sex-specific differences in editing. In this thesis, LPS treatment affected selective editing, increasing …

Climate Change In Gilgit-Baltistan: Satellite-Based Land Use/Land Cover Change Detection, Socio-Economic Dimensions, And Adaptation Strategies, Ali Muhammad

Graduate Theses/Dissertations

Climate change is increasingly transforming the cryosphere, hydrology, and human landscape of Gilgit-Baltistan, a highly climate-sensitive mountain region in northern Pakistan. This thesis investigates these transformations through satellite-based land use/land cover (LULC) change detection in four representative tehsils of Gilgit-Baltistan—Ali Abad, Gilgit, Nagar, and Sikander Abad—selected to span a gradient of human pressure and cryospheric exposure within the region. Using summer, cloud-free (< 10%) imagery from USGS Landsat 7 (2000) and Landsat 8 (2025), it conducts a multi-temporal comparison of environmental and socio-spatial change. After atmospheric correction and band compositing, the imagery is classified in ArcGIS Pro into six classes—Water, Barren land, Vegetation, Snow, Glacier, and Built-up—using a Support Vector Machine (SVM) classifier, with Maximum Likelihood Classification and Random Forest also tested but found less suitable for the final workflow. The analysis detects a pronounced reduction in mapped glacier-class area alongside a comparatively stable snow class, together with built-up expansion, while examining how temperature, precipitation, tourism, and population dynamics relate to observed LULC transitions. The results reveal a pattern of cryospheric decline and urban growth, with implications for water availability, ecological stability, hazard exposure, and settlement pressure. By integrating geospatial change detection with climatic and socio-economic interpretation, the thesis moves beyond mapping to explain interacting environmental and human drivers of landscape transformation and provides a reproducible remote-sensing baseline for monitoring land-surface change in heterogeneous mountainous terrain. It recommends integrated water-resource management, climate-resilient land-use planning, watershed and glacier monitoring, and sustainable tourism governance, supporting evidence-based decision-making by the Government of Gilgit-Baltistan and organizations working on climate adaptation, disaster risk reduction, and sustainable regional development.

American Elderberry's Next Top Pollinator: Evaluating The Role Of Arthropods In Pollination, Jenny K. Burrow

Graduate Theses/Dissertations

American elderberry (Sambucus nigra subsp. canadensis) is a woody deciduous shrub native to eastern North America. In addition to its long history of use by indigenous peoples, there is renewed interest in cultivating and consuming American elderberry, primarily driven by expanding health supplement markets. Despite recent advances in horticultural development of American elderberry, its pollination ecology remains poorly understood. In this field study, I evaluated the contribution of arthropod visitors to pollination of American elderberry. To do this, I first characterized the identities and abundances of arthropod visitors via timed arthropod collections and floral observations during peak flowering …

Advancing Hate Speech Detection: Binary And Multiclass Approaches From Traditional Methods To Parameter-Efficient And Ontology-Guided Language Models, Mahmoud Abusaqer

Graduate Theses/Dissertations

The widespread proliferation of hate speech on social media platforms poses significant challenges for content moderation and user safety, requiring automated systems that are simultaneously accurate, efficient, and capable of fine-grained distinctions. This thesis investigates hate speech detection through five published manuscripts organized into two complementary threads: binary detection (hateful vs. non-hateful) and multiclass detection across demographic targeting categories. The binary thread progresses from a broad 38-model baseline spanning traditional machine learning, deep learning, and transformer architectures (where RoBERTa reaches 91.48% accuracy and CatBoost remains competitive at 88.60%) to parameter-efficient adaptation, in which Low-Rank Adaptation (LoRA) of large language models …

Development And Validation Of The Ipip-Ocean: A Hierarchical Facet-Level Measure Of The Big Five, Caleb Niccum

Graduate Theses/Dissertations

This study focused on developing a mid-range, hierarchical, five-factor, 20-facet personality inventory (the IPIP-OCEAN) composed of 100 items drawn from both the IPIP-NEO-300 and the Abridged Big Five Circumplex. Hierarchical confirmatory factor analysis was used to validate the factor structure. Depression and anxiety, measured with the PHQ-9 and GAD-7, were used to further validate the measure through discriminant and convergent validity by examining whether the domains and facets of the IPIP-OCEAN produced findings consistent with those reported for similar scales in prior depression and anxiety research. Numerous factor analyses were conducted on the IPIP-OCEAN dataset (N = 1,058), and a …

Synthesis And Characterization Of The New G3 Family Of Organoantimony(V) Cyanoximates, Thao Trang Phan

Graduate Theses/Dissertations

Bacterial infections pose a serious threat to humans by developing resistance, rendering antibiotics ineffective. Of the 12 antibiotics recently approved since 2017, 10 belong to an already existing class. Various resistance mechanisms, such as reduced drug uptake, active efflux, drug inactivation, and target modification, can significantly reduce the efficacy of entire classes of antibiotics. Discovering novel strategies to overcome diverse mechanisms of resistance and improve therapeutic efficacy is in high demand. Inorganic compounds with organic ligands (both complexes and organometallics) represent a new class of compounds against which antimicrobial resistance has not yet been established. Recently, we discovered two series …

In The Beginning There Was Positive Law: Section 25, Calder V. Bull, And Constitutional Continuity, Kevin C. Walsh

Scholarly Articles

From the beginning of its operation as fundamental law for the government of the United States, the Constitution has continually operated as supreme and judicially enforceable positive law. This is the principal claim I offer as an “original-law originalist” in response to contrary claims advanced by Professor Jonathan Gienapp in Against Constitutional Originalism: A Historical Critique. Gienapp argues in Against Constitutional Originalism that “[h]istoricizing the original Constitution . . . poses a foundational challenge to originalism as it has long been conceived.”2 Constitutional originalism depends on perceived continuity with the past. But the perception of constitutional continuity turns out to …

Laudato Si' And The Limits Of Law: Reflections On The Vocation To Protect Integral Ecology, Lucia A. Silecchia

Scholarly Articles

In 2015, Pope Francis’s widely anticipated encyclical, Laudato Si’: On Care for Our Common Home, was released. It was a wide-ranging commentary on the state of the world, with much to say to economists, ecologists, farmers, theologians, educators, architects, artists, and pastors. It may, however, have been of particular interest to lawyers eager to see what Pope Francis had to say about law’s particular role. 

On this question, Laudato Si’ painted an inconsistent portrait of law’s suitability to this task. Pope Francis spoke passionately about the need for law at all levels to tackle the complexities of caring for our …

Constitutional Theory At A Catholic University, J. Joel Alicea

Scholarly Articles

No abstract provided.

The Genius Dilemma: Innovation Versus Antifraud In Stablecoin Regulation, Seth C. Oranburg

Scholarly Articles

The 2022 TerraUSD collapse, erasing $50 billion and exposing unregulated stablecoin risks in a $260 billion market, led Congress to enact the Guiding and Establishing National Innovation for U.S. Stablecoins Act of 2025 (GENIUS Act). This statute exempts compliant payment stablecoins from the Securities Act's "security" definition, enforces strict reserve requirements, and creates a tailored private right of action-shifting authority from ex post Rule lob-5 litigation to ex ante prudential oversight while maintaining market discipline via calibrated remedies.

As the first doctrinal analysis of this landmark legislation, this Article contends GENIUS resolves regulatory fragmentation, optimizes risk allocation under uncertainty, and …

Strict Scrutiny And The Viewpoint Continuum, A.G. Harmon

Scholarly Articles

Consider the following instances: A cell phone photograph picturing a man's left kneecap. A statement that the speaker thinks, "The name Josiah is really cool." A woman who runs her bicycle over a business owner in order to gain celebrity and increase attention for her new podcast. An intentional lie told to acquire a job. A student who insists on answering his math exam questions in runic symbols.

At one point or another, American courts have considered the merits found in favor of instances similar to these and other like circumstances as amounting to "viewpoints." As such, they …

The Constitution Of Conversations: The Enduring Legacy Of Sandra Day O'Connor, Derek A. Webb

Scholarly Articles

Soon after Justice O'Connor's passing in December 2023, commentators and court watchers across the ideological spectrum questioned whether anything in the legacy of the first woman to serve on the Supreme Court— once called “the most powerful woman in Washington, D.C.”—remained intact.

Drawing upon speeches and interviews she gave over her entire forty-year public career, I argue that O’Connor’s deepest and most enduring contribution was a subtle, compelling, interconnected, and yet today largely countercultural vision of the Constitution as a site of multiple conversations, a “Constitution of Conversations,” that took place variously within institutions, across institutions, and across time. More …

Vested Rights And The Presumption Of Lawful Use, Adam J. Macleod

Scholarly Articles

Presumptions matter in cases and controversies about private rights. A party who bears the burden of proof or persuasion and who cannot meet that burden will lose. But private law presumptions are not as well under-stood as the presumption of innocence in criminal prosecutions. This article explains a number of presumptions governing property, especially land use, by reference to the concept of vested private rights. A person may enjoy the presumption that his use of property is lawful when he has a right to make the use prior to a legal challenge or change in the law, and his right …

The Constitutional Significance Of The First American Pope: The Promise Of Listening In An Era Of Mutual Suspicion, Derek A. Webb

Scholarly Articles

Pope Leo XIV has focused a good deal of writing and speaking in the first year of his pontificate on the theme of listening, dialogue, and bridgebuilding. For Leo, listening, dialogue, and creating harmony across diverse perspectives where possible are at the heart of the Christian life. But his reflections on these themes, while rooted in theology, are aimed at a wider audience, going well beyond the church community, and addressing philosophical issues of universal human concern. Indeed, the first American pope happens to be highlighting certain ideals regarding dialogue that, while perhaps forgotten today, are central to the American …

A Commemoration: 75th Anniversary Of The Catholic University Law Review, Veryl Victoria Miles

Scholarly Articles

This essay celebrates the 75th Anniversary of the Catholic University Law Review.  A retrospective of the law review’s first 50 years (1950-2000) was published in volume 50 by Professor Ralph Rohner.  Ralph J. Rohner, The 50th Anniversary of the Catholic University Law Review, 50 Cath. U. L. Rev. 267 (2001). Similarly, this essay reviews the law review publication experience and production output from 2001 through 2026, its contributions to the educational and scholarly development of student editors, student authors, and the greater body of legal scholarship.

Nuclear Deterrence And Nuclear Modernization: A Strategic Analysis Of Global Nuclear Threats And U.S. Policy, Abraham Morland

Graduate Theses/Dissertations

The nuclear imperative comes from the idea that all three legs of the Triad must be retained to ensure a viable deterrent posture, provide flexibility in a response, and give decision makers options to create uncertainty in an adversary’s decision calculus. The nuclear imperative is the need to fund suggested shortfalls in the nuclear enterprise and modernize the U.S. Triad, not just one or two legs, but all three, due to the ever-increasing nuclear risk. To understand the current state in which the United States finds itself and the need for the nuclear modernization program, this thesis will review nuclear …

Early Drowsiness Detection Via Second-Order Derivative Analysis Of Heart Rate Variability: A Non-Contact Ecg Approach With Machine Learning, Fabrice Vaussenat, Abhiroop Bhattacharya, Julie Payette, Alireza Saidi, Victor Bellemin, Geordi-Gabriel Renaud-Dumoulin, Sylvain G. Cloutier, Ghislain Gagnon

Études primaires

Drowsy driving contributes to roughly 20% of traffic fatalities, yet most detection systems rely on behavioral cues that appear only after impairment has set in. Here we ask whether first and second derivatives of heart rate variability (HRV) can detect pre-crash states earlier than conventional approaches. Twenty-five participants completed 49 driving simulator sessions while we recorded cardiac activity through capacitive ECG electrodes embedded in the seat backrest—a non-contact method that avoids the privacy concerns of camera-based monitoring. To prevent circular evaluation, ground truth labels were based solely on crash proximity rather than HRV-derived scores. The combined HRV feature set (conventional …

Le Parcours Des Travailleurs Immigrants Blessés Et Son Incidence Sur L’Alliance Thérapeutique : Une Étude De Cas Longitudinale En Contexte De Réadaptation Au Travail Au Québec, Maude Arsenault, Jessica Dubé, Daniel Côté

Études primaires

Cette étude explore l’incidence du parcours prélésionnel des travailleuses et travailleurs immigrants (TI) blessés sur l’alliance thérapeutique (AT) en réadaptation au travail. À partir d’une ethnographie longitudinale menée dans une clinique québécoise, sept trajectoires ont été analysées selon leurs dimensions migratoires, socioprofessionnelles et linguistiques. Les résultats montrent que le déclassement professionnel, la précarité de l’emploi, les barrières linguistiques et les expériences de racisme fragilisent la construction du lien de confiance et la définition partagée des objectifs de retour au travail. Lorsque l’emploi prélésionnel est perçu comme transitoire ou inadéquat, l’obligation institutionnelle d’y retourner crée une rupture symbolique qui entre en …

Occupational Exposure To Pesticides Increases The Risk Of Amyotrophyc Lateral Sclerosis: A Systematic Review And Meta-Analysis, France Labrèche, Pamela Prudhomme, Maryse Gagnon, Nicolas Dupré, Sabrina Gravel

Études primaires

Objective To systematically review the evidence on the association between occupational exposure to pesticides and the risk of amyotrophic lateral sclerosis (ALS).

Methods A systematic search, conducted in eight bibliographic databases for publications between 1990 and 2025, identified observational studies estimating the risk of ALS after occupational pesticide exposure. Study quality was assessed using the WHO Risk of Bias (RoB) assessment instrument for systematic reviews, with the ROBINS-E (RoB in non-randomised studies of exposure) tool domains of bias. Pooled risk estimates were produced using random-effects models with restricted maximum likelihood, heterogeneity was assessed with I² statistics, and meta-regressions and publication …