Digital Commons Network^™

Effects Of The Psb-To-Ow Ratio And Light Intensity On Biogas Composition During Phototrophic-Assisted Anaerobic Fermentation Of Organic Waste, Kridsana Jirasansawat, Sirilak Prasertkulsak, Nitiwist Teangthai

Applied Environmental Research

The integration of phototrophic processes into anaerobic fermentation offers a promising strategy for improving biogas quality; however, the combined effects of the photosynthetic bacteria-to-organic waste (PSB-to-OW) ratio and light intensity remain unclear. In this study, the photosynthetic bacteria (PSB)-assisted anaerobic fermentation of municipal organic waste under varying PSB-to-OW ratios and light intensities was evaluated. An optimal PSB-to-OW ratio of 1:2 resulted in significantly higher CH4 concentrations and lower CO2 and H2S concentrations than the other tested ratios did (p < 0.05). At this ratio, moderate illumination (2000 lx) resulted in the highest CH4 concentration (68.2 ± 0.3%), compared with 1000 lx (61.5 ± 0.4%) and 4000 lx (63.1 ± 0.5%). Under illumination, the CO2 and H2S concentrations were lower than those under dark conditions, indicating a more favorable biogas composition. Kinetic analysis indicated that CO2 and H2S exhibited apparent first-order behavior under illumination, with the highest rates occurring at 2000 lx (kH2S = 0.093 day-1; kCO2 = 0.059 day-1), suggesting light-dependent transformation processes. Metagenomic analysis revealed a microbial community dominated by sulfide-oxidizing (Chlorobium sp.), photoheterotrophic (Rhodopseudomonas sp.), and syntrophic bacteria, supporting coupled carbon conversion and sulfur transformation. Overall, optimization of the …

Metal–Organic Frameworks : Opportunities And Challenges In Nutrient Recovery, Suchana Amnuaychaichana, Chi-Wang Li, Pongsak (Lek) Noophan, Sumeth Wongkiew

Applied Environmental Research

Nutrient recovery from waste streams is a critical strategy for promoting sustainable agriculture and mitigating environmental degradation. Essential nutrients commonly present in organic waste and wastewater, such as nitrogen and phosphorus, can be reclaimed and reintegrated into agricultural systems. Metal‒organic frameworks (MOFs), which are composed of metal clusters coordinated with organic ligands, have emerged as promising materials for adsorption and have the potential for nutrient recovery and pollutant removal because of their high porosity, large surface area, and tunable physicochemical properties. These attributes enable MOFs to serve in diverse applications, including heavy metal adsorption, organic pollutant degradation, and nutrient transformations. …

A Living Epidemic: The Persistence Of Tuberculosis In Contemporary Indigenous Alaska, Sharon Kim , ‘26

Senior Theses, Projects, and Awards

No abstract provided.

Toward Ethical Provenance Tracking: The Ga4gh Model Data Access Agreement (Daa), Alexander Bernier, Bartha Maria Knoppers, Jonathan Lawson, Robyn Mcdougall, Maili Raven-Adams, Vasiliki Rahimzadeh

Center for Medical Ethics and Health Policy Staff Publications

Purpose: Standardizing contractual clauses that govern data access enables research institutions to responsibly steward genomic and related health data while enabling its efficient downstream reuse.

Methods: We describe a document analysis study using both qualitative and comparative law analytical approaches to identify the most common categories of clauses from 29 different data access agreements used by human biomedical research consortia globally. We furthermore characterized the legal positions and standard practices for each common element of the agreement and synthesized across them to develop model clauses. A total of 3 discussion sessions were organized virtually to refine the clauses among members …

Be A Man: Hypermasculinity And Hostile Attribution Bias As Predictors Of Violence, Kaley Nicole Potter

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years, violence has risen to record-high numbers in communities and correctional facilities, with men perpetrating the vast majority of violent crimes. Hypermasculine values (e.g., power, aggression, and domination) have been linked to aggressive and violent behavior. Hostile attribution bias, which leads individuals to attribute hostile intent to neutral or ambiguous stimuli, has also been linked to aggression.

The current study used structural equation modeling (SEM) to examine hypermasculinity and hostile attribution bias as predictors of proclivity for violence, comprised of aggression and historical violence. The model was iteratively modified to assess changes in model fit and constructs. Male …

Data-Driven Methodologies For Mapping Cultural Heritage: The Case Of The National Coal Heritage Area, West Virginia, Usa, Hossain Mohammad Nahyan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this dissertation was to develop a comprehensive, data-driven spatial framework for characterizing the complex cultural landscape of the National Coal Heritage Area (NCHA) in West Virginia. By transitioning away from traditional, heuristic spatial mapping, this research integrates advanced spatial statistics, machine learning, and GIS-based methodologies to objectively quantify the physical, visual, and cultural dimensions of the post-mining environment. The research is structured around three interconnected empirical studies, each addressing a specific scale of the Landscape Character Assessment (LCA) framework to support heritage conservation and sustainable spatial planning. The first paper focused on landform classification, developing an automated …

Exploring Youth Soccer Coach Recruitment Practices, Han-Earl Lim

Graduate Theses, Dissertations, and Problem Reports (ETD)

This qualitative single-case study examined how a private-interest, nonprofit youth soccer club in the Midwestern United States recruits coaches, what coach qualities are prioritized in hiring, and how organizational and sociocultural conditions shape those practices. The study was guided by three research questions focused on (a) recruitment and early support processes, (b) hiring criteria and decision rationales, and (c) the organizational and sociocultural contexts influencing recruitment. Data were generated through five semi-structured interviews with four participants who were involved in recruitment practices (the Executive Director, the Assistant Director, and two full-time head coaches). Additional sources included an organizational mapping survey …

Dispositional Mindfulness And Autonomic Reactivity, Thomas Dylan Boyer

Graduate Theses, Dissertations, and Problem Reports (ETD)

To explain how different facets of mindfulness were associated with task performance in distinctive ways, Lindsay and Creswell (2017) proposed the Monitor and Acceptance Theory (MAT). According to this model, the mindfulness facet of monitoring present state awareness was thought to influence task performance differently than the nonjudgmental acceptance facet of mindfulness, but no studies to date have examined this model with respect to an individual's physiological response to stressful tasks. Because dispositional mindfulness has been associated with both increased and decreased physiological and affective reactions to stress in previous studies, the present study tested whether the Monitoring facet of …

The Bleeding Edge Of Misogyny: How Gender-Based Harassment And Infrastructural Neglect Shape Menstrual Distress, Mackenzie J. Miller

Graduate Theses, Dissertations, and Problem Reports (ETD)

Despite growing attention to menstrual health, organizational research has largely overlooked how workplace conditions shape menstrual experiences. Dominant perspectives frame menstruation as an individual issue that negatively affects work, neglecting how features of the work environment – such as gender-based harassment and access to menstrual-related infrastructure – contribute to menstrual distress. Addressing this gap, this dissertation adopts a bidirectional perspective, examining how social and material workplace conditions shape menstrual distress, defined as the extent to which menstrual symptoms interfere with daily functioning. Drawing on the transactional model of stress and objectification theory, I hypothesized that gender-based harassment would predict menstrual …

Bringing Patriarchy To Looksmaxxing: Identification And Exploration Of Strategies To Restabilize The Patriarchy In The Looksmaxxing Community, Mackenzie Grace Freeman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Research literature on looksmaxxing is subsumed under the incelosphere, which is acknowledged as a white and male supremacist space. Yet, researchers fail to attend critically to the structure of patriarchy, choosing instead to base their analyses within the mainstream hegemonic masculinity paradigm. Using a Bourdieusian framework, this project fills a gap in the literature by transcending the mainstream paradigm to explain how the looksmaxxing community uses the body as a site of crisis management in response to patriarchal backlash, with the ultimate goal of restabilizing the patriarchy. This project uses a community-led survey from a popular online looksmaxxing community. This …

The Dual-Factor Model (Dfm) Of Mental Among Appalachian Youth, Mawyah Adel Bashatah

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background. Adolescent mental health is a critical public health concern, particularly in rural Appalachian communities where rates of depression, anxiety, and substance use exceed national averages and access to mental health resources remain severely limited. Traditional mental health frameworks rely predominantly on the identification and reduction of psychopathological symptoms, neglecting the independent contributions of positive well-being to adolescent risk and resilience. The Dual-Factor Model (DFM) of mental health offers a more comprehensive alternative by simultaneously assessing subjective well-being (SWB) and psychopathology, classifying individuals into four distinct groups: Complete mental health, Vulnerable, Symptomatic but content, and Troubled. Despite the DFM’s growing …

The Hows And Whys Of Gendered Grouping Practices In Primary Physical Education In England, Shaun D. Wilkinson, Annette Stride, Dawn Penney

Research outputs 2022 to 2026

Background: Single- and mixed-sex grouping have long been a focus of attention in physical education (PE) and are matters often at the fore of discussions about curriculum planning, teaching, and learning. Nonetheless, there remains little consensus or guidance on which approach (or combination of approaches) should be preferred in PE in primary and secondary schools in England. Further, while single- and mixed-sex grouping have been extensively researched in PE in secondary schools, hitherto there remains an absence of research examining these practices in PE in primary schools. This research sought to address gaps in the literature to build a stronger …

I Am Still Concerned About Them: Grandmother Kinship Caregivers And The Challenge Of Abuse By Children In Their Care, Hajara Bentum, Vicki Banham, Kwadwo Adusei-Asante

Research outputs 2022 to 2026

Research evidence has shown that adverse occurrences within the kinship caregiving environment, such as the grandparents' experiences of violence and abuse, may introduce new stressors or exacerbate existing aged-related challenges, leading to adverse impacts on grandparent kinship carers. Yet no research has explored the impact of abuse and violence experienced by grandparent kinship caregivers from children in their care. This study involved narrative interviews with 31 grandmother kinship caregivers in Ghana to explore the adverse effects of the abuse they have experienced from children in their care. The study findings revealed the following impacts on grandmothers: (1) high blood pressure, …

Emancipatory Research In Social Work: What Does Critical Realism Offer?, Shajimon Peter, Lynne Soon Chean Park, Liz Beddoe

Research outputs 2022 to 2026

Summary: Critical realism offers a promising philosophical framework for emancipatory research in social work. Emancipatory research recognizes that people experience multiple realities and necessitates an inclusive participatory approach. However, these experiences are shaped by powers inherent in objectively existing structures, systems, and processes that must be identified and addressed for true emancipation. This theoretical article suggests a critical realism-informed methodology for emancipatory social work research. Findings: The critical realist framework acknowledges a stratified ontology and relativist epistemology that recognizes both subjective experiences and objective structures, bridging the subject–object binary created by objectivist and constructivist approaches. This allows for a radical …

Embodied Tales Of Older Women And Their Relationship With Movement And Their Younger, Present And Future Selves, Valeria Varea, Robyne Garrett, Alfonso García-Monge, Gustavo González-Calvo

Research outputs 2022 to 2026

Ageing has been often seen as negative in Western cultures. Older bodies are frequently associated with decline, loss, dependency, illness and increasing incompetence. Significantly, this ‘decline model’ of ageing tends to ignore the diverse lived experiences of older adults. This paper draws on the theoretical concepts of embodiment and affect to explore the embodied experiences of a group of 17 older women, focussing on their relationship with movement and with their younger, present and future selves. We used a narrative analysis approach and creative nonfiction to represent the data. The findings are presented in composite narratives in the form of …

Providing Help In Europe: Are In-Household Care And Outside-Household Support Associated With Grandparental Child Care?, Roosa Maria Savela, David A. Coall, Mirkka Danielsbacka, Antti O. Tanskanen

Research outputs 2022 to 2026

Grandparental child care is a vital form of social support that can enhance family well-being. Prior studies have found that older adults who provide support to one individual are more likely to offer help to others within their families and social networks. However, little research has examined whether helping others is associated with grandparental child care. Using data from the Survey of Health, Aging and Retirement in Europe, covering 27 countries, and using multinomial regression models, we show that (a) support provided to individuals outside the household is associated with increased grandparental child care, whereas (b) family care provided within …

Overview Of Aboriginal And Torres Strait Islander Health Status 2025, Australian Indigenous Healthinfonet

Research outputs 2022 to 2026

This Overview provides a summary of the most recent indicators of the health and wellbeing of Aboriginal and Torres Strait Islander people (of all ages, where data are available). The topics included in the Overview cover chronic health conditions which are featured on the HealthInfoNet website. Over the years as additional funding has been obtained and in consultation with HealthInfoNet networks, more topics have been covered on the website and are now included in the Overview. The topics aim to reflect the status of Aboriginal and Torres Strait Islander health over this period and going forward.

Dropouts And Refusers: Clinicians’ Insights And Initiatives Into Reducing Treatment Attrition Amongst Young People Who Sexually Offend, James L. Finney, Natalie Gately, Suzanne Rock, Jocelyn Jones

Research outputs 2022 to 2026

Sexual offending by young people causes significant harm to victims, families and communities. Treatment engagement and completion are therefore important for reducing future harm; however, young people who drop out of, or refuse to engage in, treatment present a unique challenge for clinicians and justice systems. Drawing on Bronfenbrenner’s (1979) ecological systems theory, this study explored clinicians’ perspectives on the barriers to treatment engagement and completion for young people who have sexually offended in the Australian context. Semi-structured interviews were conducted with clinicians who provided or facilitated treatment for young people who had sexually offended (N = 22). Two major …

The Complex And Multifaceted Nature Of Social Media: Perspectives From Young Adolescents, Parents And Experts, Cindy Branch-Smith, Diarmuid Hurley, Nasim Salehi

Research outputs 2022 to 2026

Purpose: This study explores the complex and multifaceted nature of social media use among young adolescents, drawing on the perspectives of young adolescents, parents and experts. It examines both the benefits and risks of social media and associated implications for adolescent mental health, self-development and social relationships. Methodology: A qualitative, interpretive design was utilised, using interviews across three stakeholder groups, with data analysed using reflexive thematic analysis. Findings: The analysis identified a range of perceived opportunities, benefits and challenges associated with adolescent social media engagement. Participants highlighted its role in fostering connection, education and self-expression, alongside significant risks, including cyberbullying, …

The Lived Experience Of Intimate Partner Violence For Females In Emerging Adulthood: A Qualitative Study, Laurel Dobkin M.S.

Selected Full Text Dissertations, 2011-

Emerging adulthood is the developmental period between ages 18 to 25 where individuals begin to explore their worldviews and develop intimate relationships. This period is important for developing a sense of identity and self (Arnett, 2000, 2014). During this period, negative events or relationships, such as intimate partner violence (IPV), may have detrimental effects (Erikson, 1968; Barreto & Frazier, 2012). While literature suggests that IPV has high rates and negative consequences in emerging adulthood (Bhattacharjee & Gopal, 2022; Centers for Disease Control and Prevention [CDC], 2024; Shen & Kusunoki, 2019), there is little research on the subjective experience of females …

Enhancing Coastal Vulnerability Assessments And Policy Impacts On Socioeconomic And Environmental Equity In Michigan's Great Lakes Communities, Esther N. Acheampong

Dissertations, Master's Theses and Master's Reports

Accelerating shoreline erosion, fluctuating lake levels, and climate-induced hazards are transforming the Great Lakes’ freshwater coasts, exposing the limitations of static and inequitable management frameworks. This dissertation investigates how Michigan’s coastal governance systems produce and manage vulnerability along the Lake Michigan shoreline by integrating geospatial modeling, institutional policy analysis, and environmental justice theory. It argues that both physical processes and institutional designs co-determine patterns of exposure, protection, and equity. The research begins by developing a refined Coastal Vulnerability Index (CVI) tailored for lacustrine environments, applying it to Muskegon County to assess how shoreline change, armoring, and seasonality influence localized risk. …

Sex Differences In The Use Of Cognitive Strategies In Brown-Headed Cowbirds (Molothrus Ater), Nicole E. Robinson Ms.

Theses and Dissertations (Comprehensive)

Cognition is widely believed to be adaptive, yet few studies directly show that variation in cognitive performance is related to fitness. Brown-headed cowbirds (Molothrus ater) provide a powerful system for addressing this gap because brood parasitism creates strikingly different reproductive problems for females and males. Females face the spatial demands of nest-prospecting, whereas males face social and competitive demands associated with access to mates. Across five experiments, cowbirds were tested on an outdoor foraging task designed as an analogue of nest prospecting, with manipulations of retention interval, cue conflict, and breeding condition, followed by observations of reproductive behaviour. …

Investigating The Impact Of Winter Exposure To Natural Environments On Perceived Health And Well-Being Using Geographic Ecological Momentary Assessment: A Case Study At Arrowhead Provincial Park, Faith M. Laing

Theses and Dissertations (Comprehensive)

This study examined how winter exposure to specific natural environments influenced perceived health and well-being outcomes using Geographic Ecological Momentary Assessment (GEMA) in Arrowhead Provincial Park. Studies performed in the wintertime are limited, as is our understanding of how specific park features and/or activities impact health and well-being. To address this, GEMA was used with a video component to capture participants’ real-time experience and emotional responses in specific park locations defined by polygon boundaries. Two surveys were administered through participants mobile devices, one being an in-situ engagement survey triggered by entering a bounded location, which included a video and …

Injury To Insight: Exploring The Influence Of Media On Acl Rehabilitation Experiences Of Female Soccer Players, Chynna Ho-Young Cadogan, Jill Tracey

Theses and Dissertations (Comprehensive)

Participation in soccer inherently carries a risk of injury, with female athletes facing a significantly higher susceptibility to anterior cruciate ligament (ACL) injuries (Campbell et al., 2014; Le et al., 2025; Silvers-Granelli, 2021). The increasing participation in women’s soccer, coupled with the growing demand for its consumption through spectatorship, has contributed to a rise in ACL injuries, and increase in media coverage on this phenomenon (Parsons et al., 2021). Understanding how media narratives surrounding ACL injuries and recovery may influence rehabilitation experiences can educate coaches, mental performance consultants, athletic therapists, and female soccer players to better understand and navigate ACL …

Organ Chips And Translational Research: Identifying And Examining New Ethical Issues, Melanie Jeske

Center for Medical Ethics and Health Policy Staff Publications

Organ chips, also known as organ-on-a-chip devices, tissue chips, or microphysiological systems, have emerged over the last decade as a promising translational technology amidst growing concern about the translational crisis between laboratory research and patient bedside. Pointing to high rates of failure between nonhuman animal models and safety and efficacy in humans, organ chips and similar new approach methods have attracted substantial public and private investment. As human-cell-based alternatives to animal models, organ chips promise more predictive, efficient, and ethical platforms for pharmaceutical and toxicity testing. Engineered cultivation systems that enable cells to assemble into tissue-like structures (e.g. kidney, brain, …

Imagining Genomics And Population Health In 2050: Anticipating Future Research, Policy, And Governance Needs, Bartha Maria Knoppers, Yann Joly, Ma Apos N H Zawati, Habiba Alsafar, Jeffrey C Barrett, Laura Blackburn, Brian Hon-Yin Chung, Martina C Cornel, Edward S Dove, David Glazer, Calvin Wai-Loon Ho, Muin J Khoury, Anna C F Lewis, Anneke Lucassen, Peter F R Mills, Colin Mitchell, Nicola Mulder, Ainsley J Newson, Anthony Ng, Paul D P Pharoah, Vasiliki Rahimzadeh, Megan C Roberts, Saskia C Sanderson, Jeffrey M Skopek, Ron Zimmern, Eric M Meslin

Center for Medical Ethics and Health Policy Staff Publications

No abstract provided.

Access To Digital Health Technologies: Personalized Framework And Global Perspectives, Sanjiv M Narayan, Mina K Chung, Demilade Adedinsewo, Luisa C C Brant, Leslie L Davis, David Duncker, Jennifer L Hall, Janet K Han, Carolyn S P Lam, Eldrin Lewis, Joseph Loscalzo, Manlio F Márquez, Vasiliki Rahimzadeh, Fatima Rodriguez, Prashanthan Sanders, Emma Svennberg, Kenneth Stein, Mintu Turakhia, Clyde Yancy, Antonis A Armoundas

Center for Medical Ethics and Health Policy Staff Publications

The emergence and rapid adoption of digital health technologies (DHT) present unprecedented opportunities to democratize and reduce disparities in health care by monitoring health and disease at the point of care in all patients. However, limited access to DHT is becoming a major obstacle to realizing these goals. Access to DHT is influenced not only by well-recognized social determinants of health, but also by digital determinants of health, such as digital literacy and the need for broad access to digital infrastructure, as well as commercial and economic factors. Addressing these challenges and designing unbiased systems of care are essential to …

Do Lineage-Based Inheritance Norms Matter In Kinship Care Arrangements? Exploring Inheritance Paths In Grandparent Kinship Care Practice In Ghana, Hajara Bentum, Alhassan Abdullah, Vicki Banham, Kwadwo Adusei-Asante

Research outputs 2022 to 2026

Kinship lineage and inheritance norms in Ghana play a significant role in shaping family decisions. Research has shown that kinship lineage and inheritance norms determine kin membership for children by specifying whether they belong to their maternal or paternal family, as well as whether they can inherit properties of their biological father or mother. The notion of kinship membership has shaped parenting and child welfare practices in Ghana, including child maintenance payments and parental neglectful behaviours. This research explored whether kinship-based inheritance norms could influence decisions about selecting a grandmother (maternal vs. paternal grandmother) as a child’s caregiver. We interviewed …

Between Care And Protection: Constraints On Political Authority In Kamala Harris's 2024 Presidential Campaign, Marissa Barbara Pax

Graduate Student Theses, Dissertations, & Professional Papers

Competing expectations about strength, care, and protection shape how presidential leadership and authority are constructed in contemporary U.S. politics, particularly for members of marginalized communities. This thesis examines Kamala Harris’s 2024 presidential campaign as a case study to explore how candidates negotiate competing understandings of political authority through appeals to Lakoff’s (2002, 2008) Strict Father Morality and the Nurturant Parent Morality. An analysis of her campaign reveals that Harris repeatedly appeals to both moral frameworks, constructing authority through empathy, mutual responsibility, and care while also emphasizing threat identification, protection, discipline, and moral strength. Although Harris successfully mobilizes the rhetorical resources …

From Custody To Care: Understanding Mental Health And Recidivism In The Criminal Justice System, India Cox

Undergraduate Research Posters

Previous studies on genetic influences in mental health disorders have been shown to correlate with incarceration rates in families. Consequently, there are individuals within the criminal justice system under the clinical threshold of a mental health diagnosis; it has been found that almost half of the incarcerated population was arrested due to acting upon their mental health disorder, while 27 to 38 percent developed PTSD while imprisoned. Furthermore, the serious and exhausting cycle of recidivism within the criminal justice system highlights the failure to provide the necessary mental health treatment required to support rehabilitation while incarcerated and prevent reoffending upon …