Digital Commons Network^™

Nonlinear Optics Through Femtosecond Light-Matter Interactions, Shah Faisal B. Mazhar

Dissertations, Theses, and Capstone Projects

This dissertation offers experimental and theoretical insights into nonlinear light-matter interactions induced by intense femtosecond (fs) laser pulses. It investigates key phenomena, including stimulated Raman scattering (SRS) from phonon and magnon quasiparticles, supercontinuum (SC) generation via self-phase modulation (SPM), conical emission (CE) arising from four-wave mixing (4WM), and modulation instability (MI) driven by cross-phase modulation (XPM) between SRS and SC processes. These effects are studied in diverse media using state-of-the-art femtosecond lasers.

The interplay among SRS, SC, 4WM, and MI is examined to probe vibrational modes and temperature-dependent magnetic excitations in condensed-matter systems. Experiments are conducted on anisotropic uniaxial calcite …

Choreographies Of Care: Disability And Relationality In Performance, Kiera Bono

Dissertations, Theses, and Capstone Projects

My dissertation explores enactments of what I am calling “choreographies of care” in interdisciplinary performance practices in the 21^st century. Working across disability studies, race and ethnicity studies, queer theory, and performance studies, I investigate the ways in which chronically ill and disabled artists have generated multisensorial movement, sound, and performance works that resist normative understandings of time, space, bodies, and interactions between bodies. Focusing mostly on performances and events that I have attended in New York City or virtually over the past decade, my project engages directly with disability arts communities in which I have been deeply embedded …

Teaching And Technology: "You Can't Just Do The Same Thing Online", Sakina Laksimi

Dissertations, Theses, and Capstone Projects

This dissertation examines how faculty at the City University of New York navigated the abrupt transition to online teaching during the COVID-19 pandemic, revealing how pedagogy is shaped by technological, institutional, and social conditions. Drawing on twenty-two interviews with twelve faculty across eight disciplines, I use a grounded theory approach to analyze how instructors adapted courses, reimagined assessment, and sustained connection with students amid crisis. Three overlapping pedagogical orientations emerged: improvisational, relational, and design-based teaching. These approaches highlight how faculty balanced responsiveness, care, and intentional course design in environments mediated by digital platforms and marked by inequity. The study situates …

Non-Linear Heart Rate Variability: Investigating Cardiac Complexity Of Psychopathic Traits, Khaya A. Roach

Dissertations, Theses, and Capstone Projects

Psychopathy is a complex personality disorder characterized by distinct emotional and interpersonal deficits, and affects approximately 25% of the prison population and 4.5% of nonincarcerated populations. The manifestation of psychopathy can be understood through two distinct variants, each demonstrating unique etiological pathways and clinical presentations. Primary psychopathy is characterized by core interpersonal and affective deficits, including shallow emotions and manipulativeness, while demonstrating reduced autonomic responsivity and lower anxiety levels. Secondary psychopathy presents with higher levels of impulsivity, anxiety, and emotional dysregulation, showing stronger associations with various psychopathologies. Treatment outcomes also vary between the variants, with primary psychopaths typically showing poor …

Towards Automated Evolution Of Imperative Deep Learning Programs, Tatiana Castro-Vélez

Dissertations, Theses, and Capstone Projects

Software engineering (SE) is increasingly intersecting with data-centric domains such as machine learning (ML) and deep learning (DL). Similar to bugs in traditional software systems, defects can emerge in ML and DL systems. ML, including DL, systems are now widespread and rely on dynamic models defined by input data. Developers face the challenge of building dependable systems while addressing the demand for scalable software.

Efficiency is essential to support responsiveness with respect to ever-growing datasets. Traditional DL frameworks achieve scalability through deferred execution, enabling symbolic, graph-based deep neural network (DNN) computation. While efficient, this approach is error-prone, cumbersome, and difficult …

Toward A Generalizable Perceptual Hashing Framework For Image Manipulation Detection, Priyanka Samanta

Dissertations, Theses, and Capstone Projects

This thesis contributes to research in adversarial image manipulation detection. The primary motivation is the increasing need to verify digital images, especially for legal evidence, journalistic proof, or social media content—where manipulated or fabricated images can mislead, defame, or distort reality. A key application and contribution of this work is the development of eWitness, a blockchain application that generates and registers image provenance at capture time to enable independent verification of authenticity. The secret sauce behind the system is SmartHash, a novel and efficient perceptual hashing algorithm designed for real-world deployment in systems like eWitness. Unlike existing algorithms, SmartHash targets …

Asian American Artists, Improvisation, And Collaboration, Johnna Wu

Dissertations, Theses, and Capstone Projects

The purpose of my dissertation is to explore how contemporary Asian Americans artist-performers have formulated their identities through collaborations with the Association for the Advancement of Creative Musicians (AACM). The project addresses issues in the existing literature on this topic and provides an alternative framework of cosmopolitanism to understanding the multidimensional aspects of artistic collaborations. The dissertation examines the history of the AACM and the Asian American improvisers and reveals ideological differences among its members on how music should reflect their identities. These histories paved the way for the artist subjects of my three case studies: Miya Masaoka, Vijay Iyer, …

The Effect Of Tbi On Working Memory And Anxiety In Rats, Mariola Sobolewska

Dissertations, Theses, and Capstone Projects

Traumatic Brain Injury (TBI) is a significant public health concern, often leading to cognitive and emotional impairments. This study examined the effects of TBI on working memory and anxiety-like behavior in young male Sprague-Dawley rats using the Radial Arm Maze (RAM) and Elevated Plus Maze (EPM), which are behavioral assessments. The RAM tests spatial working memory by evaluating the animal’s ability to remember and efficiently navigate multiple arms to retrieve rewards. The EPM assesses anxiety-like behavior based on the animal’s preference for open versus closed arms. The study utilized young male Sprague-Dawley rats, a well-established rodent model known for its …

Repurposing Atractylenolide Iii, A Natural Anti-Inflammatory Compound, For Alzheimer’S Disease, Angela M. Steele

Dissertations, Theses, and Capstone Projects

Alzheimer’s disease (AD) is a debilitating neurological condition ranked as the fifth leading cause of death in adults over the age of 65. Despite the severity, 98% of drugs have failed as treatments for AD. Current novel drug development approaches have been unable to produce a disease-modifying treatment as they often have a one-target approach, not accounting for the complex nature of the disease. One of the hallmarks of the disease, inflammation, may provide a better target for treatment because it interacts with multiple facets of the disease. Drug repurposing to identify compounds that mitigate inflammation in AD could provide …

Text-Based Propaganda Detection, Vivek Sharma

Dissertations, Theses, and Capstone Projects

In the digital age, the swift consumption of news and the widespread dissemination of propaganda significantly threaten democratic principles and informed decision-making. News organizations, often aligned politically, tailor their content to appeal to specific audiences, thereby perpetuating biases. Despite advancements in detecting propaganda through various computational techniques, including Large Language Models(LLM) and BERT-based approaches, significant challenges persist concerning data availability and the effectiveness of detection tools. This thesis explores the landscape of text-based propaganda and reviews related research in textual analysis. It introduces a novel method for collecting a social-media based dataset, which includes analysis of journalists' tweets to discern …

The Architecture Of Exclusion: Disability, Race, And The History Of New York City’S 600 Schools, Francine Almash

Dissertations, Theses, and Capstone Projects

This dissertation investigates the largely erased history of New York City’s 600 schools—segregated public schools created to house students labeled as emotionally disturbed or socially maladjusted. These institutions, operating throughout the mid-20th century, disproportionately served Black and Puerto Rican youth, many of whom were placed in these schools under vague behavioral criteria and with little to no pathway for return to general education settings.

Combining archival research, longitudinal policy analysis, historical media review, and critical race and disability studies frameworks—including DisCrit (Disability Critical Race Theory)—this project situates the 600 schools at the intersection of institutional racism and ableism. It argues …

Online Resources For Oral Communication Courses, Sean P. Palmer

Dissertations, Theses, and Capstone Projects

Online resources focusing on oral communication skills are lacking, even as online education itself expands. While I was aware of this lack, I didn’t realize its severity until LaGuardia Community College went fully remote during the 2020 global pandemic, and I was looking for online tutoring aids for oral communication. Furthermore, the information presented online is frequently unsuitable for the purposes of online pedagogy due to its specialized and jargony mode of presentation. Also, many existing assignments involving oral communication assume public speaking as the default model, despite the growing importance of emergent digital modes of oral performance, like podcasting …

Between The Buffer And The Black Box: Ed(1), Invisible Text, And Delegation In Word Processing, Kai Prenger

Dissertations, Theses, and Capstone Projects

This thesis provides a media archaeological and theoretical examination of ed(1), the Unix line editor developed by Ken Thompson at Bell Labs in 1969, arguing that its approach to "invisible text" processing established lasting patterns of human-computer collaboration that persist in contemporary digital systems. Through historical research, technical analysis, and critical interpretation, this study demonstrates how ed(1) embodied a particular epistemology of text processing that appears alien in a contemporary context, but proves insightful in the age of generative text creation.

ed(1) emerged from the unique convergence of Bell Labs' collaborative research culture, severe hardware constraints of early Unix systems, …

From Stories To Strategy: Oral Histories As Qualitative Evidence For Neighborhood Planning, Randip K. Parhar

Dissertations, Theses, and Capstone Projects

Developments in neighborhood planning have sought more grounded and community- engaged approaches to space and service design. This capstone project examines how oral history recordings can serve as a data source for neighborhood planning. It asks “How can computational methods of analysis be applied to oral history recordings to provide a source of information for neighborhood planning?” using Jamaica, Queens, as a testbed. Using R as a computational tool, the project applies foundational text mining techniques, such as term frequency analysis, n-gram analysis, and topic modeling, to explore patterns and themes within the recorded narratives. These methods can provide a …

Socioeconomic Stasis And Racial Immobility In The United States: How Does American Political Polarization Contribute To African American Poverty?, Carmel Agnant

Dissertations, Theses, and Capstone Projects

African Americans in the United States presently exist in a poverty-stasis, a perpetual social and economic underclass positioning despite a constantly evolving American economy, society, and bodies of legislations due to political polarization. This follows a lengthy history of racial immobility (preventing a racial group from economic mobility) and stagnation since America’s era of sectional polarization over slavery. African Americans lack access to build wealth and have always struggled with societal exclusion. Legislation created and enacted that would support them politically, legally, socially, and/or economically are consistently met with legislative gridlock or countervailing measures to reverse and nullify advancements in …

Re-Envisioning Digital Agency: From Representationalism To Interpretant-Driven Epistemology, Michael C. Lee

Dissertations, Theses, and Capstone Projects

This thesis examines the epistemological and ethical foundations of digital technologies, particularly code and algorithmic systems, by considering their entanglement with representationalism. Arguing that code now functions as a dominant social agent and epistemic subject, through the concept of the Code’s-eye view, I explore how automated datafication reduces human experience to quantifiable inputs, reinforcing epistemic closure and social fragmentation. Drawing on pragmatist philosophy, including Peirce’s semiotics, Dewey’s democratic ethics, and Rorty’s conversational inquiry, I propose an interpretant-driven epistemology grounded in communal inquiry and interpretive openness. This alternative framework resists the binary logic of algorithmic rationality by emphasizing conflict and the …

Starspot Inference Using Light Curve Inversion Techniques, Mohammad Refat

Dissertations, Theses, and Capstone Projects

Star spots are patches that are dark or bright on the surface of a star. They are tightly correlated to the magnetic activity of stars. One of the reasons we want to study star spots is to better understand where the active latitude of stars are located, which helps us understand planet habitability around low mass stars. The Starry package is a set of tools that can map the surface of stars and exoplanets using time series data, with spherical harmonics. Butterpy is a package that allows for the simulation of starspot evolution and their lightcurves. Fleck is a package …

Flotsam And Jetsam: The Role Of Mlb Integration In The Wreckage Of The Negro Leagues, Nastasia Pollas

Dissertations, Theses, and Capstone Projects

“We are the ship, all else the sea.” Adapted from a Frederick Douglass speech, this quote by Rube Foster became the slogan of the Negro Leagues, illustrating the resolve and determination to prosper alone during a time of segregation. Setting aside long-standing rivalry and strife, Black baseball teams united under a shared vision of forming the first professional Black baseball league.

This paper examines how Giddens' structuration theory, connecting social structures with individual actions, can explain both the development and success of the league under segregation and its eventual demise during integration.

Effect Of Equation Of State On The Formation Of Binary Black Holes In Active Galactic Nucleus Disks, Theodore Edwards

Dissertations, Theses, and Capstone Projects

Active galactic nucleus disks have been proposed as a possibly dominant location of the mergers of binary black holes detected by gravitational wave observatories. The nonlinear interactions between stellar mass black holes and disk gas determine when binaries will form from single objects on nearby orbits. Prior work has used smoothed particle hydrodynamics models in an isothermal disk to study this problem. However, the local equation of state near the midplane of an optically thick accretion disk is adiabatic rather than isothermal, even if the radiative equilibrium temperature is azimuthally isothermal. Therefore, we investigate the use of an adiabatic equation …

Britten’S Violin Concerto And His Early Period—Score Analysis And Pacifist Narrative, Magdalena Filipczak

Dissertations, Theses, and Capstone Projects

This dissertation presents a comprehensive study of Benjamin Britten’s Violin Concerto, Op. 15, using the work as a lens through which to examine the composer’s early period. Rather than treating the concerto as a purely technical or stylistic artifact, the study situates it within the broader context of Britten’s formative years, his early artistic circles, the political tensions of the 1930s, and his evolving pacifist stance.

The final third of the dissertation offers a detailed formal and interpretative analysis of the full orchestral score, tracing an expressive arc across the entire work by identifying an idée fixe motif and following …

Liberated Learning Spaces: A Visual Playlist, Tarilyn R. Little

Dissertations, Theses, and Capstone Projects

Liberation can be defined as “the act of setting free” or “being free from limits on thoughts and behavior.” Both an action and a state of being, liberation has long been centered as a key function of education, particularly for those who live in historically and systemically marginalized identities. Despite the long-standing existence of liberation-focused pedagogies and activism aimed at transforming schools and students’ lived experiences, educational institutions in the United States have struggled to live out these ideals, often sustaining and replicating systems and practices of oppression. Drawing on historical and contemporary conversations in education and psychology, Liberated Learning …

Processing Of Diphthongs By Turkish English Bilinguals: An Erp Study, Ecem Kopuz

Dissertations, Theses, and Capstone Projects

This study examines how native phonological experience influences the brain’s response to speech sounds in Turkish-English late bilinguals and English monolinguals. We asked whether neural responses reflecting encoding of auditory information would be sensitive to language specific experience. Using event-related potentials (ERPs), and specifically, the Acoustic Change Complex (ACC) we measured neural responses to four stimuli, /u/, /ua/, /iu/, and /ia/, where vowel quality changes for three of these. A change from /u/ to /a/ or /i/ to /a/ within a syllable (as in [ua] and [ia]) represents a clear vowel quality shift. All participants were expected to show sensitivity …

Reinforcement Learning Based Resource Management In Edge Systems, Motahare Mounesan

Dissertations, Theses, and Capstone Projects

Modern end-user applications that are highly compute- and data-intensive, while being extremely latency- and accuracy-sensitive, are increasingly reliant on distributed computing. This paradigm spans a range of architectures, from cloud computing to in-device processing. Cloud computing, though scalable, often incurs high latency and cost, constraints that are particularly problematic for time-sensitive applications. In contrast, in-device computing on end or IoT devices is limited by resource constraints, making it inadequate for many complex workloads. Edge computing presents a compelling alternative by bringing computation closer to data sources, thereby reducing end-to-end latency and improving responsiveness. However, the inherent decentralized and dynamic nature …

Crisis Narratives And The Vicissitudes Of Haitian Foodways: A Critical Comparison Of Three Food Items, Marc S. Gabriel

Dissertations, Theses, and Capstone Projects

Polities and media external to Haiti direct a lot of narrative focus on the country being the source of its own protracted crises. This represents a powerful narrative hegemony that casts the post-colonial nation as a zone of perpetual disasters or crisis. To maintain that narrative domination over Haiti, opportunistic observers of Haiti’s media spectacles of crisis only need to atomize the country’s newest crisis or natural disaster from the history that situates it. The elision of the Haitian memory – a memory of structural adjustment programs, systematic displacement, foreign-sponsored paramilitary violence, erosion of peasant foodways and agriculture – from …

Tradition, Individuality, And Innovation In Western Classical Music Performance: A Quantitative Analysis Of Bach’S Fourth Cello Suite Prelude, Clare Monfredo

Dissertations, Theses, and Capstone Projects

Why do we seek out new performances of a commonly performed piece of music? An essential tradition of Western classical music (WCM) is the performance of canonical works by composers, an activity that requires the interpretation and execution of written scores by individual performers. In this practice, performers are not only expected to determine the composer’s “intentions,” but also somehow (paradoxically) share these in a “unique” performance interpretation. In musical education, performers are trained by teachers to create these “unique” interpretations by learning how to intuit composers’ intentions in a system that passes down interpretative traditions through master-apprentice one-on-one lessons. …

Satellite-Host Galaxy Co-Evolution With Next-Generation Regulator Models, Austen Gabrielpillai

Dissertations, Theses, and Capstone Projects

The evolution of satellites galaxies is an unsolved problem in galaxy formation. Recent observations such as the SAGA and ELVES surveys find tension in HI contents and star formation of satellites around their central host galaxies when compared to our own local environment, the Milky Way. These processes are potentially highly influenced by the host's circumgalactic medium (CGM), and to constrain these cases requires accurate and fast modeling of satellites-host interactions. In this work, we present our methodology for evolving z = 0 surviving satellites alongside their central galaxy in sapphire, a CGM regulator co-evolution model of galaxy formation. …

Improving The Assessment Of Functional Ability In Older Adults, Aneela Rahman

Dissertations, Theses, and Capstone Projects

Deficits in instrumental activities of daily living (IADL) are a hallmark of dementia, and the unprecedented aging of the population strongly motivates early identification of older adults at-risk for functional decline. In 2015, the White House Conference on Aging emphasized the need to improve detection of diminished capacity across important areas of functioning. To date, there is very limited research on early IADL changes in cognitively unimpaired (CU) individuals and those with subjective cognitive decline (SCD) and mild cognitive impairment (MCI), who may be in early preclinical dementia stages. Additionally, little is known about how changes in functional brain networks …

Evaluating Dental Ai Research Papers: Key Considerations For Editors And Reviewers, Sergio E. Uribe, Manal H. Hamdan, Nicola Alberto Valente, Satoshi Yamaguchi, Fahad Umer, Antonin Tichy, Ruben Pauwels, Falk Schwendicke

School of Dentistry Faculty Research and Publications

Objective

Artificial intelligence (AI) is increasingly used in dental research for diagnosis, treatment planning, and disease prediction. However, many dental AI studies lack methodological rigor, transparency, or reproducibility, and no dedicated peer-review guidance exists for this field.

Methods

Editors and reviewers from the ITU/WHO/WIPO AI for Health – Dentistrygroup participated in a structured survey and group discussions to identify key elements for reviewing AI dental research. A draft of the recommendations was circulated for feedback and consensus.

Results

The consensus from editors and reviewers identified four key indicators of high-quality AI dental research: (1) relevance to a real clinical …

Corrigendum To “A Compound Of Concentrated Growth Factor And Periodontal Ligament Stem Cell-Derived Conditioned Medium” [Tissue Cell 65 (2020) 101373], Z. Aghamohammadi, M. Kadkhodazadeh, M. Torshabi, Fahimeh Tabatabaei

School of Dentistry Faculty Research and Publications

No abstract provided.

Urgent Issues And Prospects In Guilty Plea Research And Practice, Allison D. Redlich, Lydia Becker, Lucian E. Dervan, Michael P. Donnelly, Annabelle Frazier, Meredith Gallen, Oren Gazal-Ayal, Rebecca K. Helm, Brian D. Johnson

Department of Psychology Faculty Scholarship and Creative Works

Criminal legal systems around the world rely heavily on defendants foregoing their right to trial and pleading guilty. However, legal scholars, social scientists, and practitioners have identified and empirically examined numerous problems with pleas, such as the high potential for coercion, innocent defendants falsely pleading guilty, and undue incentives in exchange for accepting plea offer. In this article, leading guilty plea experts (practitioners and researchers) were asked to identify what they considered to be the most urgent questions surrounding pleas. Across nine commentaries, three primary themes emerged. First were calls for increased transparency in pleas, specific to rules of discovery …