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Transcranial Ac Modulation Of Cerebellar Nuclear Activity In Awake Animals, Nuran Kavakli

Dissertations

Entrainment of cerebellar nuclear (CN) cells via cerebellar transcranial alternating current stimulation (ctACS) has been reported in animals under ketamine/xylazine anesthesia. Our main objective was to demonstrate modulation of CN activity in unanesthetized, freely moving animals using ctACS. Multi-channel carbon-fiber electrodes were implanted into the interpositus nucleus for recording multi-unit (MU) activity, and thin-film electrodes were implanted subcutaneously over the posterior cerebellum for stimulation. A frequency-domain-based metric was developed to quantify modulation from MU signals. The results demonstrated modulation in a wide range of frequencies (4 Hz-300 Hz) as in anesthetized animals. In contrast, the amplitude of the peak in …

Ai-Augmented Financial Advisors: Comparing Ai And Human Analyst Investment Recommendations In Agreement, Performance, And Firm Size Effects, Crystal Chen

Honors College Theses

This study examines the level of agreement and performance between artificial intelligence (AI) generated investment recommendations and human analyst recommendations across U.S. publicly traded firms. Using a sample of twelve companies categorized by firm size (large, mid, and small), the study collects buy, hold, or sell recommendations from generative AI systems and human analysts. Agreement between AI-to-AI and AI-to-human recommendations is measured using Cohen’s Kappa agreement. Portfolio performance is evaluated by constructing equal-weighted portfolios for each recommendation source and size category. Risk-adjusted returns are measured using the Sharpe ratio over 1-, 2-, and 3-month periods. Furthermore, the study tests whether …

Voices Of The Young: Exploring Child Agency In Heritage Language Socialization In Chinese American Families, Yiyang Guan

Graduate Doctoral Dissertations

This dissertation investigates how young children in Chinese‑heritage families participate in heritage language development and maintenance (HLDM) in everyday family life. It asks four questions: what agentic behaviors young children display in heritage language socialization (HLS) and family language policy (FLP) co-construction; how they conceptualize language ideologies; what attitudes they hold toward HLDM; and whether differences in agency, ideologies, and attitudes relate to socioeconomic background.

Using a qualitative multiple‑case design, the dissertation focuses on seven families in the San Francisco Bay Area. Data includes parent and child interviews, child language portraits, child audio diaries, parent‑recorded natural conversations, and family background …

Pickleweed In The Disappearing Marsh: Population Genetics & Metal Accumulation In Salicornia Depressa, Alice Kaisla

Graduate Doctoral Dissertations

Salicornia is a genus of succulent halophytes found in salt marshes around the world. Salicornia species have a remarkably high tolerance for heavy metal pollution and have been shown to accumulate high concentrations of heavy metals in their tissue under experimental conditions. As a result, they are both a useful system for studying evolution in polluted coastlines and a potential candidate for use in phytoremediation. My research focuses on Salicornia depressa, known as pickleweed, a species commonly found in marshes along the heavily urbanized and industrialized New England coast. I investigate genetic diversity and population structure in S. depressa populations …

Streamlined Biomedical Image Processing Pipelines, Jiehyun Kim

Graduate Doctoral Dissertations

This dissertation focuses on advancing carotid artery analysis through a series of visualizations and deep learning tools for calcified plaque assessment and related biomedical imaging tasks. Accurate plaque evaluation is essential, but current workflows depend on slow, clinician-dependent manual review. To address these limitations, this work introduces the CACTAS framework, a set of tools and methods that enable fast and reliable plaque segmentation for clinicians.

The first study, the CACTAS-Tool, provides a web-based labeling tool that enables clinicians to label plaque directly in three dimensions through a streamlined one-click interface. This tool significantly reduces the effort required to generate high-quality …

Transformative Teaching And Learning - Practicing Emancipation Through Co-Construction And Dialogue In Workplace Learning, Lisa Roe

Graduate Doctoral Dissertations

ABSTRACT

TRANSFORMATIVE TEACHING AND LEARNING: PRACTICING EMANCIPATIONTHROUGH CO-CONSTRUCTION, AND DIALOGUE IN WORKPLACE TEACHING ANDLEARNING

June 2026

Lisa A. Roe, B.A., University of Maine

M.Ed., Suffolk University

Ph.D. University of Massachusetts Boston

Directed by Professor Patricia Krueger-Henney

This dissertation investigates how emancipatory and creative practices can transform vocational high school classrooms into spaces of shared power, dialogue, and mastery-based learning. Using an autoethnographic methodology, I examined my practice as a vocational educator in information technology over the course of an academic year.

Grounded in Wheatley’s fractal organization theory, Kincheloe’s critical constructivism, Lave and Wenger’s situated learning, and dialogic pedagogy, …

Negotiating Complementary Pathways In Europe: Faith-Based Actors And Humanitarian Corridors In Italy And Belgium, 2015-2017, David J. Sulewski

Graduate Doctoral Dissertations

For decades, migration has ranked among the most pressing issues in European domestic and regional politics as the number of forcibly displaced persons seeking protection continues to rise. Complementary Pathways, developed as an alternative to the retrenchment of state-led refugee resettlement and restricted access to asylum, have gained increasing prominence in policy discourse and practice. Existing scholarship often explains their emergence through transnational policy transfer or government-led initiatives. Less attention, however, has been given to cases in which civil society actors initiate and negotiate such policies with the state. This dissertation examines the development of one such model—Humanitarian Corridors—focusing on …

Computer-Aided Development Of Novel Antioxidants, Rita Bernadett Vlocsko

Graduate Doctoral Dissertations

Physiological redox homeostasis is a fine balance between prooxidants and antioxidants that are integrated elements of several reduction-oxidation mechanisms at molecular, organellar, cellular and tissue levels. When this equilibrium is disrupted and prooxidants become dominant, the body relies on endogenous and exogenous antioxidants to counterbalance the dysregulation and ultimately prevent the progression of oxidative stress. Reactive species (reactive oxygen species, reactive nitrogen species, or reactive sulfur species) are significant contributors to prooxidant activity. Over the years, substantial knowledge has been accumulated regarding their origin and roles in disease development, leading to the discovery and development of antioxidants that effectively target …

Applying A Neurodiversity-Informed Approach To Understanding Resolution In Families Raising A Child With Autism, Emma Manole

Honors College Theses

The first known documentation of the syndrome we today refer to as autism spectrum disorder (ASD) was published by Austrian psychiatrist Leo Kanner (1943), who identified a cluster of disordered symptoms among 11 young children, which he termed “early infantile autism”. Consequently, the psychiatric world became aware of autism as its own disorder separate from schizophrenia or “childhood psychosis” (Wing, 1997). Since then, the ways in which autism is studied, diagnosed, referred to, defined, and treated have seen drastic changes (Blacher & Christensen, 2011) over the course of almost a century. It is only natural that the perceptions held by …

Omama-Db: The Oregon-Massachusetts Mammography Database, Avanih Kanamarlapudi

Graduate Masters Theses

Public datasets for training AI models in breast cancer screening are limited in size and quality, making it difficult to develop reliable systems. We introduce OMAMA-DB, an extensive publicly available collection of 2D mammograms and 3D tomosynthesis volumes. Starting from 967,991 images, we created a curated set of 231,080 images us ing a multi-stage filtering process that removes missing labels, uncommon dimensions, rare scanner types, duplicate studies, and invalid DICOM files. All 2D images then undergo additional outlier detection using histogram filtering and a variational autoen coder to remove low-quality outliers. OMAMA-DB includes pathology-based cancer labels and automated lesion annotations …

The Effect Of State Abortion Restrictions On Female Labor Force Participation And School Enrollment, Elena T. Albano

Graduate Masters Theses

This paper examines the causal effect of state-level abortion restrictions on young women’s labor force participation and school enrollment following the Supreme Court’s 2022 decision in Dobbs v. Jackson Women’s Health Organization. Using a difference-in-differences design that exploits the cross-state variation in post-Dobbs abortion policies, I estimate that abortion bans led to a decline in combined school and labor force participation among young women by at least 1 percentage point. This effect is qualitatively robust to a triple difference specification that uses men as a within-state control group, confirming that the results do not reflect broader economic shocks specific to …

Racism, Coping, And In-Race Heterosexism Among Asian American Sexually Expansive People: A Moderated Moderation Analysis, Miah Theresse A. Sabas

Graduate Masters Theses

Asian American sexually expansive people (AA SEP) are at elevated risk of psychological distress at the intersection of racism and heterosexism (Takeda et al., 2021). Less is known about how AA SEP cope with intersectional oppression, including experiences of in-race heterosexism. With a sample of 105 AA SEP, correlations indicated a positive link between psychological distress (PD; DASS-21, Lovibond & Lovibond, 1995) and racism-related stress (RRS; Brief PEDQ-CV, Brondolo et al., 2005), but not in-race heterosexism (Perceived Racism in Lesbian, Gay, and Bisexual Communities Scale, Sarno et al., 2015). Moderation analyses indicated only active coping buffered the relation between RRS …

Role Of Technical Assistance In Pollution Prevention In Massachusetts Craft Breweries, Shubhechchhya Regmi

Graduate Masters Theses

This study aims to examine pollution from Massachusetts craft breweries, and if it can be lessened through a pollution prevention program. This study analyzed data from two assessments with the aim of analyzing the role of technical assistance in pollution prevention across eight impact categories. The first assessment was conducted on 29 MA breweries between 2022 and 2024, and 23 were assessed a second time (in summer 2024 and summer 2025). Craft breweries face several constraints in adopting pollution prevention practices the pollution prevention program known as BetterBev helps to bridge this gap by providing technical assistance, identifying inefficiency practices …

Temwayaj: An Exploration Of Intergenerational Trauma And Resilience Through The Wisdom Of Haitian Elders, Niara J. Carrenard

Graduate Masters Theses

Haitian people have a unique history of trauma shaped by colonial violence, the brutal legacy of slavery, and political instability all of which intersect to create a complex and multifaceted experience of trauma across generations. This study explores how intergenerational and historical trauma are understood, carried and expressed across generations in the Haitian community. Drawing from grounded theory, this research examines the layered effects of colonial violence and chronic instability on Haitian people. While trauma is typically described as an individual phenomenon, this project is examining trauma as a relational process that manifests amongst different generations. Through in-depth qualitative interviews, …

Arts On The Point: Boston's First Public Sculpture Park, Isabella Slonka

Honors College Theses

Led by the conviction that “a public campus needs public art,” Professor Paul Tucker founded UMass Boston’s Arts on the Point (AoP) sculpture park in 1997. Large-scale works by world-class contemporary artists including Sol LeWitt, Dennis Oppenheim, Luis Jiménez, Sheila Pepe, and Mark di Suvero were made accessible to students, served as teaching aids and attracted those outside of UMB to Columbia Point. AoP’s use of long term loans made the landscape itself a rotating gallery.

Consideration of the “personality” of the campus was essential in the selection of works. Site visits with artists were conducted to ensure that their …

Simulating The Movement Of A Major League Fastball, Max M. Moss

Graduate Masters Theses

The orientation of the seams on a baseball may seem arbitrary in nature; however, they play an enormous role in the aerodynamics of the ball during its short flight to home plate. This thesis aims to model the movement of a four-seam fastball as accurately as possible using the fourth order Runge-Kutta method. The model incorporates the effect of the seams on the path of the ball by utilizing the oscillating cross-sectional area, which varies for each angle of rotation. The simulated results demonstrate a strong agreement with the observed pitch trajectories, accurately reproducing both induced vertical break and horizontal …

Trends Of Pediatric Psychotropic Polypharmacy In Massachusetts Before And During The Covid-19 Pandemic, Gianna D'Ambrozio

Graduate Doctoral Dissertations

Youth in the U.S. and internationally are increasingly being diagnosed with depression and related psychiatric conditions (Murthy, 2021) many of whom are being subjected to non-evidence-based, or what has been termed irrational, psychotropic polypharmacy (Barnett & Concepcion Zayas, 2019). Psychotropic polypharmacy can be defined as “the use of 2 or more psychiatric medications in the same patient,” (Zito et al., 2021) though definitions can vary. Using data from the Center for Health Information Analysis’ Massachusetts All-Payer Claims Database, this study examined the sociodemographic factors associated with high rates of polypharmacy, a hypothesized increase in pediatric psychotropic polypharmacy rates in Massachusetts …

"It's Such A Natural Fit": Integrating Reggio Emilia And Head Start For Emergent Multilinguals, Christina Bohr

Graduate Doctoral Dissertations

Early childhood education classrooms reflect the increasing cultural and linguistic diversity of the United States where many children are raised speaking more than one language. Teachers in the early education field play a critical role in supporting children’s development of language and identity. Head Start, who serves a large population of emergent multilinguals (mls), plays an essential role in offering learning environments that foster language development in both English and their home language, among many other critical skills. The Reggio Emilia philosophy is a child-centered and community-oriented approach that promotes children’s independence, exploration, and intellectual development, and is frequently integrated …

The Hunt For Prestige: An Econometric Study Of The Impact Of Cost Of Attendance Stipends In College Football On Cost Of Attendance And Student Loan Debt, Greg Chick

Graduate Doctoral Dissertations

In 2015, the National Collegiate Athletic Association (NCAA) authorized Division I institutions to provide Cost-of-Attendance (COA) stipends to student-athletes, marking the first NCAA-endorsed form of direct athlete compensation. Critics warned that institutions would inflate COA estimates to offer larger stipends, potentially increasing student loan borrowing among the broader student population. Drawing on Bowen's (1980) revenue theory of cost and O'Meara's (2007) theory of striving institutions, this dissertation examines whether Group of 5 and FBS independent institutions increased their published COA following stipend adoption, and whether Power 5 institutions experienced downstream effects on student loan debt.

Results indicate null effects across …

Should I Stay Or Should I Go?: A Phenomenological Case Study Of Teacher Turnover In An Urban School Merger, Haven Jones

Graduate Doctoral Dissertations

School mergers are becoming a more common occurrence in urban school districts within the U.S., as an attempt to address student enrollment declines and resulting budgetary concerns. Yet very little research has been conducted to understand how the context of a school merger influences known K-12 education phenomena, such as the teacher turnover decision-making process. This study utilized a phenomenological case study approach to explore the impact of a school merger on teacher turnover within a specific middle school-high school merger in a Northeastern city. Fifteen teacher participants were interviewed and three primary source documents were analyzed to determine what …

Adapting Population Genetics, Practice, And Policy For Plant Conservation In A Changing World, Cooper M. Kimball-Rhines

Graduate Doctoral Dissertations

Biodiversity conservation is an inherently interdisciplinary goal that requires effective collaboration among academics, ecosystem managers, policymakers, and other stakeholders. Codesigning research with these groups ensures experiments are useful and improves adoption of policy and practice recommendations while advancing our understanding of basic science. This dissertation explores the power of codesigned research in shaping plant conservation strategies using stakeholder engagement, causal inference, demographic modeling, and multi-omic sequencing techniques. In chapter 1 I discuss the history of New England ecosystems and the need for research-driven changes to plant conservation policy and practice in the face of global change. In chapter 2, I …

Static Data-Race Detection For Gpu Programs: Behavioral Types With Partial Completeness Guarantees, Zhen Rong Liew

Graduate Doctoral Dissertations

GPUs are essential to modern computing but notoriously difficult to program correctly. Static analysis tools can verify data-race freedom, but their over-approximations produce spurious reports of data races that do not occur, limiting their practical usefulness. This dissertation establishes when Memory Access Protocols (MAPs), a compositional abstraction modeling memory access behavior between synchronization barriers, can be simultaneously sound and complete. We first prove that MAP-based analysis is sound and complete for well-typed Jaminan programs---those without data-dependent array indexing. This result establishes the theoretical boundary: completeness is achievable when data-dependent control flow and indexing are absent. Jaminan extends MAPs with symbolic …

Academic Identity Construction Among 1.5-Generation Students In Esl Business Communication Courses At A U.S. University, Rachel K. La Russo

Graduate Doctoral Dissertations

Although 1.5-generation students complete most of their K-12 schooling in the United States, at the university level they are often placed in ESL courses due to deficit views of multilingualism that assess their writing as grammatically inaccurate. Research shows ESL courses often fail to foster 1.5-generation students’ academic development, resulting in low educational achievement and high drop-out rates (Barsony, 2016; di Gennaro, 2016; Marchese, 2021; Uman, 2018). The purpose of this qualitative study is to investigate academic identity construction among 1.5-generation students enrolled in two de facto ESL Business Communication courses at a large urban university in Fall 2022. Drawing …

Accounts Of Student Financial Aid Counselors: Identifying And Reducing Obstacles In Their Counseling Roles And Responsibilities, Andrew Joshua Marx

Graduate Doctoral Dissertations

In the financial aid office, student financial aid counselor positions are held by professionals often new to the field of financial aid. Their work supports students’ access to financial aid through routine updates to students’ accounts, counseling students on navigating the financial aid process, and guiding students on petitions for exceptions. Their ability to resolve the financial aid concerns of students may be constrained by obstacles that result from financial aid policy, challenging work conditions, or resource limitations. Their attitudes, behaviors, and conduct not only shape how financial aid policy is implemented but, crucially, place it in the context of …

The Marginalizing Effect Of Special Education: Investigating The Overrepresentation Of Black Males Identified With Emotional Impairment In A Separate School In An Urban Setting, Cindie Neilson

Graduate Doctoral Dissertations

The American public education system relies heavily on normed and standardized mechanisms to define competence, behavior, and academic success. By design, such systems cannot accommodate the full range of human variation and instead reproduce expectations rooted in dominant culture norms. When embedded within a racially stratified educational system, Special Education, while intended to provide access and opportunity for students with disabilities, can function as a mechanism through which inequality is reproduced. This qualitative study examined the persistent overrepresentation of Black males identified with Emotional Impairment in highly restrictive separate day school settings. The research was conducted in a public separate …

Talk To Me: Exploring The Sociocultural Ecology Of Home Language And Literacy Practices Of Families In India, Surbhi Puri

Graduate Doctoral Dissertations

Existing research highlights the role of home language and literacy environments (HLLE) in shaping early language and literacy development, yet few studies have examined the practices of multilingual families in India. While home environments offer rich learning opportunities, broader sociocultural and policy contexts influence how families support literacy and language development. Families’ insights into home language use, literacy routines, and cultural practices remain underexplored in early childhood education research.

The purpose of this qualitative multiple case study was to explore the HLLE of preschool-aged children in India and examine how families support early language and literacy development within multilingual home …

Small Molecule Antioxidants As Potential Therapeutics For Preeclampsia, Maxim Mastyugin

Graduate Doctoral Dissertations

The major goal of this work was to develop a therapeutic intervention against preeclampsia (PE). Preeclampsia affects up to 5-7% of all pregnancies and has no causative treatments. It is associated with oxidative stress caused by a prolonged ischemic state and increase in reactive oxygen species (ROS) in the placenta. The cardinal symptoms include high blood pressure, kidney dysfunction, and in severe cases, eclampsia. With no treatment for the underlying causes available, we offer small molecule antioxidants which may scavenge ROS in the placenta arising from the initiating event of PE, the oxidative stress. By reducing placental ROS, these antioxidants …

Pipelines And Power: Governance, Conflict, And Hybrid Political Orders In Nigeria's Niger Delta, Nkasiobu Wodu

Graduate Doctoral Dissertations

Abstract

Many conflict-affected states in the Global South can be described as Hybrid Political Orders—governance arrangements where informal authority and formal state institutions coexist, overlap, and contest for power. In Nigeria's Niger Delta, this phenomenon is clearly evident. In this context, the exercise of governmental authority extends beyond the Weberian State. Local and non-state actors such as ethnic-based organizations, former combatants, and traditional authorities routinely perform government-like functions within their spheres of influence.

This study analyzes how extractive corporations, informal authorities, and the Nigerian state co-produce governance and shape patterns of conflict and cooperation in the Niger Delta. Its central …

Whose Knowledge Is Sustained?: Dominican Students’ Cultural And Linguistic Experiences Navigating White, Female, And Monolingual Pedagogical Spaces, Carminia Lissette Castillo

Graduate Doctoral Dissertations

This qualitative study examined how Dominican newcomer youth experience schooling in U.S. secondary schools, with emphasis on language, curriculum, identity, belonging, and students’ visions for more humanizing educational environments. Grounded in student testimonios, the study explored how school structures, pedagogical practices, and teacher–student relationships shape students’ academic engagement, emotional well-being, and sense of recognition as they navigate migration, language transition, and racialized identity formation. Informed by raciolinguistic, culturally sustaining, and critical interpretive frameworks, this study centered Dominican students’ voices as sources of knowledge about schooling, exclusion, and possibility. The findings comprise three central themes. First, students described raciolinguistic schooling …

Culturally Competent Nurse-Led Education To Reduce Delayed Diagnosis And Increase Awareness Of Polycystic Ovary Syndrome In Reproductive-Aged South Asian Women, Madeeha Syeda

Honors College Theses

Polycystic ovary syndrome (PCOS) is a common condition that affects hormones in women, especially in their 20s and 30s. Symptoms of PCOS include irregular periods, abnormal hair growth, acne, obesity, hyperpigmentation of the skin, cysts, skin tags, thinning hair, and infertility (Newin, 2023). While the exact cause of PCOS is unknown, it is linked to insulin resistance, higher levels of androgens, and low-grade inflammation (Newin, 2023). In regards to complications, PCOS can increase risk for gestational diabetes, preeclampsia, preterm term, and C-section deliveries. In terms of treatment, there is no cure but early diagnosis is key to reducing symptoms (Newin, …