Art work in Cardboard, Tissue paper, and paper by artist Saxon Martinez, as part of an exhibition entitled "Candalaria Paredes and Delores Martinez" in the Cora Stafford Gallery, University of North Texas, from April 4 to April 8, 2023.

This study investigated a new approach to achieving high energy density supercapacitors (SCs) by using high surface area self-activated carbon from waste coffee grounds (WCGs) and modifying 3D printed electrodes' porous structure by varying infill density. The derived activated carbons' surface area, pore size, and pore volume were controlled by thermally treating the WCGs at different temperatures (1000˚C, 1100˚C, and 1200˚C) and post-treating with HCL to remove water-soluble ashes and contaminants that block activated carbon pores. Surface area characterization revealed that the carbon activated at 1000˚C had the highest surface of 1173.48 m2 g-1, and with the addition of HCL, the surface area increased to 1209.35 m2 g-1. This activated carbon was used for fabricating the electrodes based on the surface area and having both micropores and macropores, which are beneficial for charge storage. Direct ink writing (DIW) method was utilized for 3D printing SC electrodes and changing the electrode structure by increasing the infill densities at 30%, 50%, and 100%. Upon increasing the infill densities, the electrodes' mass increased linearly, porosity decreased, and the total surface area increased for the 30% and 50% infill electrodes but decreased for the 100% infill electrode. Cyclic voltammetry (CV) test on the assembled …

Additive friction stir deposition (AFSD) is a solid-state additive manufacturing (AM) technique that breaks down large constituent particles into more refined and uniformly disturbed microstructure. AFSD was used to print Al-Ce alloys. Current commercial Al-alloys upon elevated temperatures go through dissolution and coarsening of strengthening precipitates causing mechanical degradation of these alloys. Al-Ce alloys do not have this issue as cerium's low solubility restricts dissolution into the aluminum matrix at elevated temperatures, thus giving great thermal stability to the microstructure. Al-Ce alloys lack solid solubility that affects the solid solution strengthening and precipitation strengthening. Al-Ce alloys have limitation at room temperature as they can only reach a maximum of ~65 MPa yield strength. Elements like magnesium have been added to alloy to enable solid solution strengthening, and scandium to enable precipitation strengthening to improve strength before going through the AFSD process. By adding new elements to the Al-Ce alloys, an increase in the yield strength from ~60 MPa to ~200 MPa was achieved before AFSD. The casted alloys form coarse particles that reach 300 µm in size; resulting in stress concentration that causes material fracture before necking, giving >10% ductility. AFSD breaks down these coarse particles to increase strength and …

The current study aimed to explore the direct effect of insecure adult attachment on subjective wellbeing and its indirect effect via racial-ethnic identity. Additionally, the present study examined the extent to which racial-ethnic socialization practices may moderate adult attachment and racial-ethnic identity link. The final sample included 213 emerging adults (M = 20.94; SD = 2.96) with diverse racial-ethnic backgrounds. PROCESS Model 4 and 1 were used to examine the direct and indirect effect of insecure attachment on subjective wellbeing via racial-ethnic identity variables and the interaction effect between insecure attachment and racial-ethnic socialization on racial-ethnic identity variables. Results indicated the direct effect of insecure attachment on subjective wellbeing but did not support hypotheses for the indirect effect of insecure attachment on subjective wellbeing via the racial-ethnic identity variables. Additionally, results indicated that overt socialization buffered the negative impact of attachment avoidance on racial-ethnic identity exploration. Furthermore, racial-ethnic identity variables and subjective wellbeing significantly differed across racial-ethnic groups and socioeconomic statuses. Findings provide insight on the distinct concepts of attachment and racial-ethnic identity as they highlight inter- and intra-personal components, respectively. Mental health professionals may utilize overt socialization to help clients develop a sense of purpose and meaning related to …

The bristlenose pleco (Ancistrus cirrhosus) is a species of armored catfish in the Loricariidae family that breathes air facultatively when the aquatic environment becomes hypoxic. The bristlenose pleco uses its highly vascularized stomach as an air breathing organ. The two main goals of this developmental study were to determine the size of onset of air breathing and to determine the frequency of air breathing behavior in bristlenose plecos from juveniles to adults. Developing juveniles reach functional maturity within four to six months of hatching and grow to an adult size of eight to ten cm in length. To examine the developmental timing for the onset of air breathing, we tested different sized juveniles beginning at one cm up until 8 cm in length. The developmental timing for the onset of air breathing was measured by exposing each fish to a slowly decreasing aquatic oxygen content from 100% air saturation down to 8% air saturation. Fish were first able to breathe air at just over 2 cm and 1 gram in mass. There was a weak negative correlation between fish length and % air saturation at which air breathing began. When exposed to 15% air saturation, frequency of air breathing was …

Sensory integration techniques are a common treatment procedure among occupational therapists. The goal is to "apply" input that competes with input from problem behavior. Although this is a commonly recommended intervention, there is limited empirical evaluation with adults with intellectual disabilities. Therefore, we evaluated the effectiveness of occupational therapist-suggested sensory stimuli on the automatically maintained problem behavior of adults. Specifically, we compared the effects of non-contingent access to sensory stimuli and non-contingent access to highly preferred stimuli on the rate of problem behavior. Results suggested that, relative to highly preferred stimuli, sensory stimuli had either a limited effect on problem behavior, or in some cases, were correlated with increases in problem behavior. This suggests that sensory stimuli may not produce the same automatic stimulation as problem behavior. We will discuss implications for treatment, including methods for better identifying stimuli for use in the treatment of automatically maintained problem behavior.

This thesis describes a research study to understand the current state of human trafficking data collection practices and reporting in the province of Alberta, Canada, and gather end-user design considerations for cyberinfrastructure that will enable data sharing between multiple and diverse stakeholders. The research also examines the barriers to change and the needs of stakeholders to improve the collective understanding of human trafficking in the province. Virtual semi-structured interviews were conducted with nineteen organizations including law enforcement and community serving non-profit agencies. While the research resulted in design considerations for a cyberinfrastructure prototype, findings revealed the complexity of the human trafficking ecosystem in Alberta and suggestions for how the community of stakeholders can shift towards a sustained collaborative data sharing culture. This study responds to the need to collect actionable data from multiple sources to reflect the prevalence and context of human trafficking more accurately.

My artistic practice centers around personal history, connection, and identity. I reflect on my experience as a Nigerian who has lived on three continents thus far, and how those experiences have led to the deconstruction, reassembly, and hybridization of my identity. My work pays homage to my tribe of origin, Yoruba, whilst redefining and exploring the hybridity that exists as a result of cross-cultural influences that are prominent in our world today. I incorporate varying objects and materials such as jewelry, sculpture, wood, metal, and fiber. This integration speaks to the multicultural existence of the world I live in the interrelationship between Nigeria and the West.

Image of installation view of 2023 MFA exhibition by artist Atinuke Adeleke, entitled "Asepo" in the North Cora Stafford Gallery 1201 W Mulberry St, Denton, TX from April 19 to April 22, 2023. Asepo is a simulated domestic space that speaks to being a product of the hybridization of cultures, the sense of displacement and the need for belonging that comes with being a hybrid of sorts. The exhibition includes four sectors. The first is a bed with a floating headboard accompanied by projected imagery and sound. A performance takes place upon the bed. The second is a table with three accompanying wall-mounted pieces that connect to the table through symbolism. The third is a sculptural wooden diptych and the final sector is comprised of accessories.

Asepo is a simulated domestic space that speaks to being a product of the hybridization of cultures, the sense of displacement and the need for belonging that comes with being a hybrid of sorts. The exhibition includes four sectors. The first is a bed with a floating headboard accompanied by projected imagery and sound. A performance takes place upon the bed. The second is a table with three accompanying wall-mounted pieces that connect to the table through symbolism. The third is a sculptural wooden diptych and the final sector is comprised of accessories.

Anthropogenic activities have caused many wildlife spices to decline in populations worldwide. The grassland bird communities are especially being impacted by these land use changes. Breeding success is closely tied to functional habitats for most grassland bird species in North Texas. Restoring these degraded habitats is an important component to aid in conserving wildlife biodiversity. We surveyed the bird population at Riverby Ranch Mitigation site by conducting point count sampling. This site consists of recently restored grassland, wetland, and forested habitat. This research was focused on conducting post restoration monitoring of the bird community in the early succession of the restored habitats. We set out to use the bird community as biomonitors to help assess if the restoration practices could be considered successful. We found that density estimates were more than double at the restored site when comparing to three different references sites under different management practices. This included an unrestored working ranch, a wildlife management area, and a conservation managed prairie site. We found that biodiversity metrics were as high or higher than the reference sites. In addition, we also found that there were more observations of species of high conservation concern present at the restored stie. This research …

In my thesis, I examined impacts of nesting and floral resources on ground-nesting bee assemblages at nine ranch sites with differing grazing histories. Because ecological disturbances can strongly affect the availability of foraging and nesting resources over time, I also examined the impacts of grazing history on nesting and floral resources for ground-nesting bees. I sampled bee assemblages, a comprehensive array of vegetation and soil measures, and floral abundance and richness. I used these data to determine (1) the importance of different nesting habitat resources and livestock grazing history for ground-nesting bees and (2) how livestock grazing history influenced the availability of nesting and floral resources. I found that sites with sandier soils had greater abundance and richness of ground-nesting bees, and sites with less compacted soils had greater bee abundance. Contrary to many other studies, the availability of bare ground was not important for ground-nesting bee abundance or richness. Grazing history did not affect any measures of nesting or floral habitat, and had negligible effects on ground-nesting bee abundance, richness, and community composition. My results suggest that the availability of sandier or less compacted soils may be limiting for ground-nesting bee abundance or richness, especially in areas with predominately …

This study explores the role Comunidad Milpa (Milpa) plays in implementing agroecology food systems in Comunidad Pacheco, Argentina. From teaching residents about food cultivation practices, to the importance of a healthy diet and developing relationship with local agroecology producers, the method builds upon the idea of food sovereignty and self-governance. Research conducted for this study focused on obstacles residents encountered while seeking to incorporate local agroecology foods into their diet. Incentives encouraging residents to support area agroecology efforts were also investigated, as well as barriers producers experienced while marketing their products. Design methods used for the investigation included both qualitative and quantitative methods in the form of surveys and interviews with members and participants of Milpa. Data gathered through both methods resulted in identifying the perspective Milpa participants have of the organization, their food practices and choices, and obstacles food producers encounter within the community.

Digital twins are virtual renditions of the actual world that include real-world assets, connections, activities, and processes. Recent developments in technologies play a key role in advancing the digital twin concept in urban planning, designing, and monitoring. Moreover, the latest developments in remote sensing technology have resulted in accurate city-scale light detection and ranging (LiDAR) data, which can be used to represent urban objects (buildings, vegetation, roads, and utilities), enabling the creation of digital twin of urban landscapes. This study aims to build a digital twin of the University of North Texas (UNT) using LiDAR and GIS data. In this research, LiDAR point clouds are used to create 3D building and vegetation modeling along with other GIS data (bicycle racks and parking areas) in creating a digital twin model. 3D Basemap solutions of ArcGIS Pro and ArcGIS Online Scene Viewer, respectively, are used to create an initial 3D urban model and build the ultimate digital twin of UNT. The emergency management floorplans of UNT buildings are incorporated into the digital twin to increase emergency management efficiency. Moreover, solar power potential for individual buildings at UNT has been estimated using the Digital Surface Model (DSM) and integrated into the digital twin …

Beneficial consumer outcomes are most likely when behavior-analytic interventions are implemented with high procedural fidelity (i.e., degree to which the procedure is implemented as intended). Video self-monitoring, which involves teaching staff members to monitor their own procedural fidelity when watching recordings of themselves, can be used to improve and maintain high procedural fidelity, but video self-monitoring requires additional staff time and resources. In-vivo self-monitoring, which involves monitoring procedural fidelity during or immediately following implementing a behavior-analytic intervention, could be a cost-effective option. However, in-vivo self-monitoring needs additional research to understand its effects on procedural fidelity. This current study analyzed the effects of in-vivo self-monitoring on the procedural fidelity of three behavior technicians implementing discrete trial instruction with children with autism. We used a nonconcurrent multiple baseline across participants design to teach participants how to score their procedural fidelity during their discrete trial instruction session. Data suggested that in-vivo self-monitoring was effective for two out of three participants, and those two participants were more likely to be accurate in their self-scored procedural fidelity. Procedural fidelity for the third participant did not increase with in-vivo or video self-monitoring, and the third participant was less likely to be accurate in their self-scored procedural …

My work explores my identity as a Latino, veteran, and father, and counteracts the lack of positive representation of men of color in society. While they are similar to traditional piñatas in their design and construction, my sculptures are based on abstract representations of my internalized identity. These anthropomorphic forms stand rather than being hung, enacting ownership over their space. This allows them to take on a newly assigned identity and presence. These forms allow me to display, articulate, and communicate. the struggles I have experienced throughout my life because of systemic oppression.

Art work (installetion) in ceramic and cone 10 porcelain by artist Segrest, Courtney, as part of 2023 MFA exhibition entitled: "Inside, Outside, Under" in the Cora Stafford Gallery South, 1201 W Mulberry St, Denton, Texas, from April 26 - April 29, 2023.

Ancient gynecology is a field with a large number of contradictions. Women were expected to have full awareness of their bodily functions but were not trusted as authoritative experts on the subject. In Rome, the majority of midwives were uneducated slave women, yet the expectations held for a proper midwife required formal education. The ability to give birth made women powerful in the eyes of the Greeks but was also used by Greek men (chiefly Athenians) as an excuse to oppress women. Studying ancient gynecology is a necessity for truly understanding the day-to-day lives of ancient women. In works such as the Odyssey or The Iliad, the women featured are typically upper-class nobles who are in unrealistic settings and have similar abilities, expectations, and lives. By reading through medical texts written by respected physicians such as Soranus and Hippocrates, scholars are provided an in-depth look at how ancient doctors truly saw the female body.

Just and equitable responses to the disparate impacts of climate change on communities and individuals throughout the world are at the heart of the concept of climate justice. Commodification, in the context of my research, is the process of monetizing nature and livelihoods for the purpose of surplus accumulation and profit maximization. In this study, my aim was to contextualize the concepts of climate injustice, disaster capitalism, and the commodification of lives and livelihoods in the specific setting of disaster vulnerability in southwest coastal Bangladesh. By conducting a case study in Kamarkhola and Sutarkhali regions of southwest coastal Bangladesh, I utilized discourse analysis and content analysis of livelihood interviews, semi-structured interviews, and policy documents to demonstrate the conceptual interrelation among global climate change, climate injustice, disaster capitalism, and capitalist expansion in environmentally precarious areas. I argue that in Southwest Coastal Bangladesh, the vulnerability to disasters stems from a complex and multifaceted layer of social hierarchies and inequalities, entwined with factors such as class and power relations. I also argue that Inequalities in the political, economic, and social realms have a key role in imposing vulnerability on disadvantaged people living in ecologically vulnerable areas. The perpetuation of inequality is sustained by …

Closer to Earth explores a Black midwestern family's generational spiritual connection to nature through the power of spiritual archiving, ancestral veneration, and oral storytelling.

Highly educated and skilled Indian nationals are the largest recipients of H-1B visas in the US. An employer must be willing to sponsor an H-1B work visa for the worker to continue to live and work in the US. This stipulation has granted US employers unprecedented power over H-1B visa holders, which can be understood as status coercion; employers have state-sanctioned power to threaten or discharge a worker from their status, i.e., visa status, which interconnects work and migration status. While the expansive power of employers to curtail a worker's status is one factor driving the ongoing coercive conditions, the other factor is precarious work. There is a gap in the literature in understanding what occurs at the intersection of status coercion and precarious work, especially within high-skilled information technology (IT) jobs. For instance, how does status coercion operate for employer-sponsored H-1B visa holders? Is it similar for dependent visa workers on H-4 EAD visas that rely on their spouse's H-1B, and F-1 OPT visa workers who have employment authorization from USCIS? Lastly, do these visa workers ever resist status coercion? In this study, I draw on twelve in-depth, semi-structured interviews of Indian nationals in the IT sector on H-1B, …

Scholars today deem Robinson Crusoe the first British novel. Defoe's construction of Crusoe as the atypical British traveler asserts his collective subjectivity within the framework of intimate personal experiences, accentuating his individualism. Yet, as scholars of Orientalism and Transatlantic theory can attest, calling Robinson Crusoe the first novel provides problematic methodologies that arise from affiliating the novel form to a structure associated the British colonialism and fashioning a "superior" British subject. In this essay, I work to emphasize the hybridity present within the novel, utilize historical context to provide a voice to marginalized Indigenous Americans to show how the format relies upon a relationship between collectivism and individualism, assert Indigenous voices matter in the novel, and analyze the relationship of a new collectivism that arises from narratives that cross into American spaces.

Crude oil commonly enters freshwater aquatic ecosystems as thin sheens forming on the water surface. Oil contains mixtures of toxic compounds called polycyclic aromatic hydrocarbons (PAHs), some of which are known to be photodynamic, increasing toxicity when combined with ultraviolet radiation. Benthic macroinvertebrate communities are commonly utilized as bioindicators, and as such rely on abundant data in literature concerning benthic macroinvertebrates' relative tolerances to a wide range of pollutants. A series of 10 plastic traps, half of which were filtered from UV radiation, were deployed in an urban pond for 27 days to determine colonization preferences of benthic macroinvertebrates to UV exposure. Results of this in situ experiment indicated that the majority of aquatic insects collected from traps inhabited the UV exposed treatment group, particularly the nonbiting midge, Chironomidae. A series of bioassays were then completed to investigate the sensitivities of a Chironomidae species to thin sheens of crude oil in the presence and absence of UV radiation. All bioassays were conducted using 10 day old Chironomus dilutus larvae cultured in the lab. The series of C. dilutus bioassays were all conducted under the same water quality parameters, temperatures, and oil sheen dosing methods, under a 16:8 photoperiod and exposed …

Art work, sculpture, installation by artist Jacob Tylor Gibson, as part of an exhibition entitled "From Every Depth of Good and Ill" in the Cora Stafford Gallery, University of North Texas, from April 26 to April 29, 2023.