A collection of poetry concerned with loss and the act of creation.

Mechanical pressure offers unique control over the energy landscape of chemical reactions, opening up pathways that are inaccessible through conventional thermochemistry. We hypothesize that the reduced dimensionality defines the conformational space of the high-pressure reaction, giving rise to new selectivity that is unavailable in 3D systems. Here, we demonstrate this concept through the pressure-controlled topochemical polymerization of the diacetylene molecule deca‐3,5‐diyn‐1‐amine (DDA) incorporated in the two-dimensional (2D) perovskite [DDA]2PbBr4. Compression at 3 GPa drives the first topochemical polymerization through 1,2 addition, forming a polyene product at room temperature. The reaction is initiated by the mechanical bending of the linear DDA molecule, a mechanism fundamentally different from the 1,4-addition in 3D solids. Importantly, pressure hinders the second 1,2-addition by disfavoring the gauche conformation between the remaining acetylene groups, allowing for the selective formation of polyene versus polyacene products. We characterize the reaction mechanisms and products using spectroscopies (Raman, X-ray photoelectron, ultraviolet-visible), X-ray diffraction and density-functional theory simulations. These results highlight the important role of dimensionality in high-pressure chemistry, and offers a new paradigm for creating low-dimensional functional materials.

This thesis project investigates, analyzes, designs, simulates, constructs and tests a dual-axis solar tracker system to track the sun and concentrates the heat of the sunlight, using a Fresnel lens, into a small area, which is above of an evaporator, to increase the temperature of the seawater to convert it into freshwater. The dual-axis solar tracker was designed with the main objectives that the structure was portable, dismountable, lightweight, low cost, corrosion resistant, wires inside pipes, accurate, small size, follow the sun automatically, off-grid (electrical), use green energy (solar powered), and has an empty area right below of the lens. First, a 500 mm diameter flat Fresnel lens was selected and simulated based on an algorithmic method achieved by a previous PhD student at UNT using MATLAB®, to give the optimization lens dimensions. The lens profile was drawn with AutoCAD®, then output profile lens was simulated in COMSOL Multiphysics®. The objective was to provide the high efficiency, optimum and high precision of the focal rays and heat to the receiver of the evaporator. A novel dual-axis solar tracker system was then designed that is portable, dismountable, lightweight and corrosion resistant. The solar tracker tracks the sun in two axis of …

Synthetic biology is a rapidly growing field that aims to treat cellular biological networks in an analogous way to electrical circuits. However, the field of plant synthetic biology has not grown at the same pace as bacterial and yeast synthetic biology, leaving a dearth of characterized tools for the community. Due to the need for tools for the synthetic plant biologist, I have endeavored to create a library of well-characterized TATA box variants in the cauliflower mosaic virus (CaMV) 35S promoter using the standardized assembly method Golden Braid 2.0. I introduced single nucleotide changes in the TATA box of the CaMV 35S promoter, a genetic part widely used in plant gene expression studies and agricultural biotechnology. Using a dual-luciferase reporter system, I quantified the transcriptional strength of the altered TATA box sequences and compared to the wild-type sequence, both in transient protoplast assays and stable transgenic Arabidopsis thaliana plants. The library of TATA-box modified CaMV 35S promoters with varying transcriptional strengths created here can provide the plant synthetic biology community with a series of modular Golden Braid-adapted genetic parts that can be used dependably and reproducibly by researchers to fine-tune gene expression levels in complex, yet predictable, synthetic genetic circuits.

Compared to other examples of human behavior, humor responses have received relatively little attention from the scientific community and by the behavior analytic community in particular. This study investigated what some of the controlling variables for humans to emit a humor response may be. Participants were randomly presented two types of word sequences/jokes: one with a matching punchline and one without a matching punchline. Participants rated whether the jokes were funny or not funny, and reaction time was measured for all stimuli presented. Generally, the results showed that reaction times to punchlines rated as not funny were shorter than punchlines that were rated funny. These differences in reaction time were interpreted with priming, intraverbal control, and multiple control as an experimental foundation. Limitations include the absence of physiological measures due to COVID-19 restrictions and the forced choice of two rating responses. The implications of this research reveal opportunities for future research of humor responses.

Recently, 3D printing has received increasing attention for the fabrication and assembly of electrodes for batteries due to the freedom of creating structures in any shape or size, porosity, flexibility, stretchability, and chemistry. Particularly, zinc ion batteries (ZIBs) are favored due to high safety, cheap materials cost, and high volumetric capacity (5,849 mAh/cm3), however, rapid evaporation of Zn due to low melting temperature has limited its 3D printability via conventional laser-based additive manufacturing technique. Here, we develop a printable ink for the fabrication of flexible and 3D printed Zn anode with varied surface areas using the direct ink writing (DIW) method. Our 3D printed porous and high surface area Zn anode structures effectively suppressed the dendrite growth while providing high Zn ion diffusion towards the cathode to significantly enhance the performance of ZIB. By varying filament distancing and path, we 3D printed zinc anode structures with different active surface areas, surface area to volume ratio, porosity, flexible and multiple layer structures that can be incorporated on any device. Carbon in the composite improved conductivity, and mechanical stability of 3D printed zinc anode. Our 3D printed composite anodes allowed flexible designing of batteries surpassing conventional battery designs such as coin cells …

Behavior analysts often work with families from diverse cultural backgrounds. Ideally, behavior analysts and families interact in ways that are responsive to the family's culture and valued outcomes. The data indicate that most behavior analysts, however, come from one dominant cultural group. This is a proposal for training program and evaluation method to support culturally responsive professional-family interactions. This proposed study is designed to be conducted via Zoom-- a cloud-based video conferencing service. A pre-post treatment design is proposed to assess the effects of the training. Hypothetical data were generated to consider the range of effects such a program might have on trainee responses to written/live scenarios. Responses in the observation protocol included written descriptions, empathetic statements, perspective taking statements, and non-verbal behaviors. Overall, the program was designed using evidence-based procedures and is likely to support behavior analysts in training and in practice to improve their interactions with families and become more culturally responsive to groups of people that are from the non-dominant culture.

All street hawkers are not the same in many Newly Industrialized Countries (NICs) of the global south as often portrayed by the media and documented in extant literature. This perception has created a gap in knowledge as researchers explore street hawking activities in NICs. In this study, I investigated a new informality trend of street hawking is coming into being within the capital city of Accra, Ghana. As governance is increasingly becoming entrepreneurial, informal activities are gradually becoming formal. Formal and registered businesses are increasingly capitalizing on hawking activities to occupy public spaces. The advent of the informality trend, I term corporate street hawking opens up new issues for the political economy, labor, and urban studies. By employing semi-structured interviews with 47 street hawkers in Accra, this paper sought to investigate three broadly interrelated questions. First, how do neoliberal policies impact the production of public space in Accra? Second, is corporate street hawking a form of creative destruction? Finally, how do corporate street hawkers practice agency within Accra?

Bad Paper follows the lives of former military service members, who have received an other-than-honorable discharge, but also have service-connected post traumatic stress disorder (PTSD). Due to the "suck it up" culture of the military, many of these veterans would not report any psychological troubles in fear of being labeled "weak" and potentially affecting their promotions. With no outlet for their PTSD, drugs and alcohol became a way of "self-medicating," which led to their dismissal from the service. A dishonorable discharge, commonly called "bad paper," from the military disqualifies veterans from receiving help from the VA. The process to overturn this status is arduous and veterans must navigate the bureaucracy of the Veterans Affairs (VA) administration as well as the individual military branches with virtually no help from either.

This research project focuses on using a multiproxy approach to discriminate between overwash and non-hurricane marsh sediments within the bed of a coastal lake. 3 marsh cores were collected in an area of McFaddin National Wildlife Refuge just south of Clam Lake that are known to contain 4 hurricane overwash deposits, Ike, Rita, Carla, and Audrey. LOI and XRF analysis were used to determine the signature of the hurricane overwash layers. 3 more cores were collected from Clam Lake where there are no visible sand layers. The elemental signature of the overwash layers found in the marsh cores was used to run a hierarchical cluster analysis on the lake cores. This was able to determine the effectiveness of XRF's ability to distinguish between hurricane overwash and marsh sediments. The combination of cluster analysis, LOI, and XRF can tentatively identify hurricane overwash deposits in a coastal lake, however, it is more successful in the marsh cores. Results in the lake cores are somewhat inconsistent and uncertain, possibly because there may have not been enough overwash deposits to identity or that the XRF analysis needs more distinct sand layers to distinguish between overwash and marsh.

Prevalence of mental health concerns among young adults is high and continues to increase. As a specific subset of young adults, NCAA student-athletes seem to experience these concerns at a similar or greater prevalence than their non-athlete, age-matched peers. Despite the number of college student-athletes who are experiencing mental health concerns, understanding how mental health impacts sport performance has not been robustly studied and has not included the diversity of identities present in the athlete population. Thus, I explored the beliefs of 266 college student-athletes who represented diverse identities and sports regarding how mental health impacts sport performance. Responses were collected using an on-line survey and analyzed using both quantitative and qualitative methods. Overall, as well as by gender, race/ethnicity, and sport type, 96.4% to 100.0% of participants believed that mental health impacts sport performance. From thematic analysis emerged three themes and various subthemes: (a) cognitive disruptions (concentration, confidence, self-talk, motivation, mindset, and decision-making), (b) the stress of being a student-athlete (life impact sport, team factors, sport impacts mental health), and (c) a mind-body connection (mind correlates with body, and mental health symptoms impact sport performance). Post-hoc cluster analysis by demographic and sport-type variables did not reveal clustering; these variables …

This thesis illustrates how Melodrama and the melodramatic mode have been adapted within contemporary cinema as both a means of commenting on prior LGBTQI representation, and of exposing mainstream audiences to the issues still faced by many within this spectrum. Through my analyses of Carol (2015), Brokeback Mountain (2005), and A Single Man (2009), I examine how filmmakers have drawn on Melodrama as both an aesthetic form, and as a reference to the broader field of generic history and criticism which ground it as a subversive form of societal critique. By focusing specifically on how these three films portray ideological issues of gender, stereotyping, parenthood, aging, and personal shame, my thesis argues that these films are making a commentary on the damaging effects of these discourses on broader society. I also simultaneously question whether the Period Melodrama as a genre can ever fully escape the conservative nature of this form, as well as the implications of continuing to portray those on the LGBTQI spectrum as victims.

Establishing effective language intervention for those who struggle to acquire it early on has received significant attention from researchers within the field of behavior analysis. The procedures of the present study were adapted from Spurgin' thesis research from 2021, in which a stimulus specific consequence was used during teaching after participants made correct responses. In this case, the stimulus specific consequence was a label for a picture that participants were required to point to during teaching trials. When participants pointed to the correct card, the researcher would label the card and deliver a small wooden block which the participants were told they were working for. In the hear-say procedures, participants were taught one set of cards and instructed to echo the researchers' labels. In the see-say participants were taught a second set of cards and instructed to "beat' the researcher to saying the word. After all cards were taught, were tested with a non-vocal receptive identification test. Immediately following this, participants were tested with a vocal expressive identification test. An extended teaching was included to determine the effects of additional practice within each condition. Results indicated that the participants were able to require some receptive and expressive language but targets …

This thesis is a critical analysis and creative commentary providing research and insight into my 150-minute multimedia exhibition, "Femininity: Ownership and Power," that premiered October 23, 2021. All of my research, composition, and collaboration efforts seek to recontextualize the semiotics of ‘femininity' through ownership and empowerment from varying intersections and identities. The titles of the eight works composed and premiered as part of the exhibition include: a beautiful reckoning; Dust; Moirai; Gaia; Portrait of the American Woman; Shared, In Balanced Contrast; At My Intersection; and I See You. Also included was #pinkcode, an exhibit that features a fuschia graphic user interface for an interactive modulation synthesis application built in Csound designed to bring femininity into computer music spaces. The musical compositions vary in instrumentation including flute, alto flute, voice, guitar, viola, harp, cajon, vibraphone, live electronics, and fixed media. They also vary in medium including live performance, virtual reality video, music video, audio-reactive TouchDesigner video, immersive text projections, light show, and live dance. Feminist texts by women poets and authors recited by women personally connected to me are also included in the fabric of the musical fixed media of multiple pieces in the thesis exhibition. Collaborators of artistic media including …

To what extent does Margaret Atwood draw from American slavery to write The Handmaid's Tale? How does Offred's narrative compare with traditional slave narratives, and to what effect? This thesis explores intersectionality (or lack thereof) in The Handmaid's Tale and compares Offred's narrative to traditional slave narratives to find answers to why Atwood chose to draw from American slavery to write her novel in the first place. Offred's narrative is compared to three traditional slave narratives written/orated by three women, Harriet Jacobs, Hannah Crafts, and Mary Prince, to demonstrate how enslavement dehumanizes Offred in similar or different ways to these three women, and to reveal how the enslavement of and violence committed against the female slave body ultimately deforms even the most intimate human relationships in both Gilead and in historical American slavery. I discuss other tactics used to maintain control of the slaves both in Gilead and in historical American slavery, with particular emphasis on the development of justifications for enslavement in both societies. Violence against the body is not enough in Gilead, so Gilead implements religious rhetoric and controls knowledge to maintain its control of the Handmaids. Despite being used to control, religion also becomes a source of …

Previous literature has identified links between psychopathic trait severity and disturbed styles of attachment on sexual outcomes in adulthood. However, few studies have investigated these domains within one design. Therefore, it is unclear how they may influence each other, given that an association between attachment styles and psychopathic traits has also been previously documented. This study sought to explore the possible role of psychopathic traits upon the association between attachment and sexual outcomes. Participants were sampled from an undergraduate student population at a large university. Data were analyzed using correlational and hierarchical regression analyses, as well as two exploratory path models. Analyses suggested that aspects of attachment and psychopathic trait severity were significantly associated with each other and differentially predicted certain sexual outcomes. Furthermore, results indicated that the effects of attachment avoidance on sexual outcomes were mediated by Factor 1 traits of psychopathy, while the effects of attachment anxiety were mediated by Factor 2 traits. Additionally, it was found that attachment style was linked with contempt, and this was further linked to disturbances in sexual outcomes, which is a novel finding. Implications of the findings, limitations, and future directions are discussed.

After the hit of the COVID-19 pandemic, the hotel industry's efforts need to focus on recovering travelers' confidence by introducing new safe and clean programs or seals. However, there is a lack of guidelines regarding which hotel safety/cleaning programs and what communication strategies are more effective when approaching guests. This study aims to address this gap by using a 2 (COVID-19 Message Type: Fear Appeals vs. Hope Appeals) × 2 (Hotel Safety/Cleaning Program Type: Internal vs. Third-Party) between-subject experiment design. Specifically, it applies the protection motivation theory in investigating the effects of different messages (hope vs. fear) along with different types of hotel safety/cleaning programs (internal vs. third-party) on guests' booking intentions. The moderating role of risk propensity was also explored. The data were collected in a public university located south of the U.S. Different ANOVA and MANOVA tests were conducted. The results suggest that hope appeal messages and hotel internal cleaning programs arouse higher booking intentions. When presenting COVID-19 related information provided by hotels, hope appeals represent a better communication strategy. In addition, the coping and threat appraisals showed to be correlated with hotel guests' booking intentions. Moreover, response efficacy was the strongest predictor with a positive correlation, whereas …

The corrosion resistance under elevated temperature of additively manufactured 316L stainless steel made by directed energy deposition was studied. Test samples were prepared in a hybrid additive manufacturing machine using standard deposition parameters recommended by the manufacturer. Control samples were cut from wrought material to compare the results. The test was performed under a corrosive atmosphere with a solution of water with 3.5 % in weight of salt (NaCl). The total duration of the test was 635 hours, divided in five stages of 12, 24, 48, 226, and 325 hours to analyze the samples between each stage. The samples were analyzed quantitatively measuring weight loss and surface topography, and qualitatively by macroscopic inspection with digital photography, and microscopic inspection with optical and scanning electron microscopy. The results show a higher corrosion rate for the additively manufactured samples compared to the control samples. An evident increase in the size of pits initially present on the samples was observed and quantified on the additively manufactured. Although the additively manufactured samples were more aggressively attacked by corrosion, they still presented a shiny surface finish at the end of the test, reinforcing the idea of the formation of a passive oxide layer and suggesting …

Multiple contributors to neurocognitive impairment in individuals with sickle cell disease have been identified. Research indicates that a history of cerebrovascular accidents, such as silent infarcts and strokes are associated with greater cognitive decline among children with sickle cell disease. Additionally, disease effects such as hemoglobin and hematocrit levels significantly effect cognitive performance among this population and should be taken into consideration when examining neurocognitive impairment. Further, previous studies show a significant relationship between child behavior problems, family functioning, and cognitive performance in children with sickle cell, marking those as important targets for intervention among this population. While cognitive decline with increased age is not typically examined in healthy child populations, some research indicates the presence of age effects in those with SCD. A majority of the literature addresses cognitive impairment from a broad perspective, while a limited number of studies have begun to address effects among specific cognitive domains. Using archival data from the National Institutes of Health's Cooperative Study of Sickle Cell Disease, results revealed that disease severity was negatively correlated with some aspects of cognitive functioning, including visual-spatial domains. Additionally, some measures of cognitive performance were inversely correlated with age. Consistent with hypothesized outcomes, family functioning was …

This thesis is focused on dynamic assessment (DA), an instructional approach based on Vygotskian sociocultural theory, applied to French pronunciation instruction, which can be neglected or inconsistent in the foreign language curriculum. DA aims to combine instruction and assessment into a cooperative, mediated approach in which the mediator works with the learner to identify and develop emergent abilities. These emergent abilities can appear in what is often referred to as the zone of proximal development (ZPD), or the difference between what a learner can do independently and what he/she can do with mediation, which in the present study was the difference between what the participant could pronounce correctly with or without mediation. In carrying out an individual DA session with a learner, the author aimed to find suggestions of potential benefits by applying DA to French pronunciation instruction and gain a more detailed understanding of the learner's performance than is generally possible from a traditional assessment, which is totally devoid of mediation for the sake of validity and reliability. The study includes a discussion of some potential benefits and limitations related to the use of DA for teaching French pronunciation to intermediate L2 learners based on what was observed in …

Adult attachment has been found to play an important role for romantic relationship satisfaction. Specifically, the existent literature generally suggests that attachment anxiety is negatively related to relationship satisfaction. However, the underlying mechanism for this link still needs further exploration. The present study examined the direct and indirect effect of attachment anxiety on relationship satisfaction via two distinct relationship commitment variables: constraint commitment and dedication commitment. The final sample included 146 unmarried participants who were in a romantic relationship for at least three months. Results of multiple regression analyses on the indirect effect model indicated that attachment anxiety had a significant direct effect on relationship satisfaction as well as a significant indirect effect on relationship satisfaction via constraint commitment. However, the hypothesized indirect effect through dedication commitment was not supported. Findings are discussed from the adult attachment perspective. Counseling implications, limitations, and future research directions are outlined.

The Godzilla media franchise is one of the longest running media franchises, which means the character himself has gone through many changes throughout the years. However, in American pop culture, the characters of Godzilla is perceived as a hero, a friend of humanity and defender of Earth. This reputation comes from the Showa Era, where Godzilla often fought on the side of humanity, rather than trying to destroy them as depicted in the original Gojira. In recent years, Toho, Godzilla's corporate owners, have been steering the King of the Monsters back into the villain role. Despite this tone shift by Godzilla's owners, American Godzilla paratexts still generally depict Godzilla as a hero. These depictions of Godzilla are used to maintain his status as a family friendly heritage brand and keep a door open for parents to introduce their children to the brand. Such a strategy allows Godzilla to survive into the modern day as an international powerhouse franchise.

Yttria stabilized zirconia (YSZ) is a polymorph with possible phase transformation toughening occurring during impact. The fractography and mechanical properties of laminated alumina and YSZ were studied in this thesis. Five sample types were studied in this thesis: (5:5) Al2O3/YSZ (a sequence of 5 alumina tapes stacked on 5 YSZ tapes), (5:5) Al2O3/YSZ (1 wt.% Pure ZrO2), (7:3) Al2O3/YSZ, Al2O3, and YSZ. Scanning electron microscopy (SEM) and X-ray microscopy (XRM) were used to study morphology and crack propagation with three-point tests performed to study the flexural strength. X-ray diffraction (XRD) spectra of all samples pre and post three-point tests were examined to determine if a change in monoclinic zirconia occurred. The combination of SEM and XRM data found microcracks in the YSZ layers of Al2O3/YSZ laminates with none present on YSZ laminates, leading to the conclusion tensile stress was performed on YSZ during sintering with Al2O3. Fracture patterns show a curving of cracks in Al2O3 layers and abrupt, jagged breaks in YSZ layers with crack forking at major YSZ microcrack regions. YSZ laminates were found to have the highest average flexural strength, but a very high standard deviation and low sample count and Al2O3 laminates having the second highest flexural …

Low Earth orbit (LEO) satellite systems have been proposed as a resource for combating the challenges in 5G network coverage and expanding connectivity to a global realm. This research focuses on the current architecture of LEO satellite constellations, with an emphasis on satellite coverage, visibility patterns and coordination schemes. Key-elements of integrating LEO satellites into the eMBB component of 5G are presented and a breakdown of potential link channel characteristics and physical layer performance metrics are described. The produced information allows for a justified analysis on the conceptualized integration.