Electronic Thesis or Dissertation

The veterans are a unique community shaped by past military experiences that may have positive and negative effects on their well-being as soldiers. With nearly half of the 18.4 million veterans in the United States living beyond 61 years, age-related physical and mental health conditions may impact the veterans’ well-being. Promoting veterans’ well-being has been studied extensively but literature on how they define it is scanty. It is critical to understand how veterans define well-being to inform future program development to address mental health needs. The purpose of this study is to discover the meaning and the lived experience of well-being among veterans. The methodology used for this study was a qualitative hermeneutic interpretative phenomenological approach to understand the meaning of veterans’ well-being. It allowed the phenomena to surface while exposing the essence of and the experience. The sampling method for recruiting participants was purposive sampling, with semi structured interviews conducted via ZOOM and direct observations at Veteran Service Organizations (VSOs) to obtain data. Fourteen veterans participated in this study, comprising eight males and six females with majority aged over 61 years. In terms of race/ethnicity, 64 % were White, 21% Hispanic and 15 % African American. With the use of Max van Manen’s analysis strategy, seven major themes emerged: (a) A Connection With A Special Bond To The Military Sisterhood/Brotherhood, (b) The Lingering Effects Of Military Service Continue To Simmer In Veteran life, (c) Feeling Grateful/Prideful Through Appreciation For Their Military Service, (d) Healthy Companionships/Relationships With Mutual Respect Yield Veteran Equilibrium, (e) Creating A Veteran Framily/Fraternity, (f) Self-fulfilment By Giving Back And Making A Life With A Purpose and (g) Veterans Living A Healthy Life Caring For Self. Six of the seven themes addressed the veterans’ well-being. The lingering effects have persisted and challenged the Veterans’ emotional well-being. However, they were able to express their military camaraderie even in the veterans’ life. Programs based on social relationships that allow connections with veterans and/or their significant others need to be established.

The ctenophore Mnemiopsis leidyi is an opportunistic species that can be extremely abundant and invasive in many parts of the world. It is well known for its bright bioluminescence, but its light emission response to flow stimulation has not been rigorously quantified. The objective of this study is to determine the luminescent response of M. leidyi to several types of mechanical stimuli, an impeller pump with the Underwater Bioluminescence Assessment Tool (UBAT) bathyphotometer and stirring as the stimulus within an integrating sphere. Tests were conducted with three day old cydippid larvae, analyzing flash parameters of rise time, peak intensity, decay slope, decay time, total integrated emission, total mechanically stimulable luminescence (TMSL), integrated flash emission, and flash duration. There were four patterns of bioluminescent responses measured with the UBAT, but they did not have statistically different flash kinetics. For the integrating sphere, the average peak intensity and TMSL were much greater than for the UBAT due to the different forms of stimulation. This study provides a well-defined baseline of cydippid larvae flash responses which may be used for identifying this species at this life stage in situ.

Both research and lived experience indicate that intangible things such as myths and absences may acquire agency, becoming Latourian actants and causing changes in people’s thoughts, beliefs, and actions. This dissertation focuses on myths and absences located in Spain’s 20th century—specifically Francoist-generated political myths, the absences of those disappeared by the Franco regime, and the literary myths created by authors of historical fiction set during the Spanish Civil War, the resulting dictatorship, and the Transition to Democracy. The argument is made that these three actants— political myth, absence, and literary myth—have acted and interacted in the following sequence: the political myths put forth by the Francoists and presented as facts led to the complicity of many of the Spanish people in the extermination of those considered dangerous or undesirable to the regime; once released into the popular imagination, the political myths gained agency, spurring the bigoted beliefs and persecutory actions that led to the absences of the maligned people. The presence of these tragic absences in the lives of their surviving loved ones then gained agency, indelibly marking the survivors and causing grief, anger, and bewilderment as well as fear, humiliation, silence, and transgenerational trauma. The absences also caused the desire among contemporary writers of historical fiction, some of them descendants of the disappeared who grew up under the cloud of fear and silence perpetuated by those disappearances, to write alternate histories pointing out the absurdities and atrocities connected to the earlier political myths and the resulting absences of undesirables. These literary myths thus acquired their own agency, changing the thoughts, beliefs, and actions of readers who were able to finally see through the truths and tragedies that lay hidden for so long behind the hostile myths. In these chapters, eight historical fictions—five novels, two plays, one film—and one non-fiction account, described by its author as “a novel without fiction”—are analyzed for evidence of the presence and the agency of political myth, absence, and literary myth.

In the inter-coastal waters of Florida, green sea turtles (Chelonia mydas) are regularly exposed to regional blooms of harmful algae which produce biotoxins. A retrospective analysis was conducted on stranded green sea turtles along the Indian River Lagoon, FL, USA. Stranding, necropsy, and histopathology reports were analyzed for 40 juvenile turtles. Liver (N=40) and kidney (N=36) tissues were analyzed for a suite of 14 harmful algal bloom (HAB)-associated biotoxins. Thirty-four (85%) turtles tested positive for at least one biotoxin, including 21(53%) liver and 22(61%) kidney tissues. Statistically significant relationships were identified between the presence of common histopathological abnormalities and biotoxins of: melanomacrophage/hyperplasia and brevetoxin-3 (P=0.03) in liver tissues, and renal fibrosis and nodularin (P = 0.04) and lymphocytosis and neosaxitoxin (P=0.03) in kidney tissues. These data demonstrate that wild turtles are commonly exposed to HAB-associated biotoxins with potential chronic health effects that contribute to strandings in the Indian River Lagoon.

This study utilized environmental, social, and governance (ESG) data to analyze how institutional investors' strategies relate to the approaches of the private equity (PE) funds they invest in. Using limited partner (LP) investor and general partner (GP) PE fund data from Preqin, I created ESG scores for both LP and PE funds. Ordinary least-squares regression showed a significant, positive relationship between LP/GP ESG strategies. However, the relationship became negative and significant when firm-, fund-, and country-level controls were added. This misalignment between statements and action, often called greenwashing, suggests that firms are driven to ESG reporting due to external factors and do not feel accountable for investment decisions that follow strategic disclosures. Investor environmental (E), social (S), and governance (G) strategies had different relationships with GP ESG approaches. Public institutional investors, fund size, and the presence of a civil law system were positive contributing factors to the LP/GP ESG relationship. Fund performance was negatively associated with the relationship. There was also a significant difference in the LP/GP ESG approach between European PE funds versus those in North America. These findings show that E, S, and G factors may be more accurately analyzed separately than as one combined cluster. The findings also show that local conditions influence ESG strategic alignment between LPs and GPs. They suggest policymakers consider unique country-level attributes and differences in fund-level characteristics when attempting to influence ESG disclosure. ESG rating services could consider including factors that measure alignment between investors’ strategic statements and their investment decisions. The results provide valuable information on corporate social responsibility (CSR) in private markets, which has yet to be broadly studied compared to the extensive CSR literature available on public companies.

A sense of belonging is instrumental to an individual’s mental health. The American School Counselor Association outlined that school counselors are responsible for helping students manage emotions and apply interpersonal skills. The school setting plays an integral part in the development of student’s social and emotional competencies. Approaches to school counseling, such as Advocating Student-within-Environment (ASE), are pivotal in efforts to help students expand their social/emotional skills. This study examined the phenomenological experience of sixth grade students who participated in an ASE-influenced counseling program. One objective for this study was to advance the current literature regarding school counseling’s efficacy in promoting greater connectedness among students and their school environment. The study was conducted using the Student Success Skills (SSS) small group intervention, led by a school counselor already trained in the program. The research questions under investigation were: What is the phenomenological experience of middle school students’ participation in an ASE-aligned evidence-based guidance curriculum? Does the phenomenological experience of middle school students’ participation in an ASE-aligned evidence-based guidance curriculum translate to connectedness among the students in the intervention? Does the phenomenological experience of middle school students’ participation in an ASE-aligned evidence-based guidance curriculum lead to coregulatory relationships among students and school faculty?

Existing brood fish research has ascertained that eggs are heavily influenced by broodstock diet but there is no information regarding this timeline of nutritional incorporation. The objective of this study is to determine duration of nutritional incorporation from diet to eggs through fatty acids. Nine California Yellowtail (Seriola dorsalis) broodstock were fed alternating diets of commercial pellets (Vitalis PRIMA: Skretting) and cutbait. Biochemical and biometric data from spawns were collected and analyzed for differences and similarities throughout the alternating diets. Eggs were observed to selectively incorporate higher sources of linolenic and linoleic acid from the pelleted diet, and eicosapentaenoic acid from the cutbait diet. Interestingly, results showed overall fatty acids from both diets were fully incorporated by eggs within 9 days following the diet switch. These findings provided new insight towards the selective incorporation of nutrients and will open new doors for future broodstock nutrition research.

Encrusters have a proven history as indicators of environmental conditions in nearshore habitats and are useful in both ecological and paleoenvironmental research within benthic ecosystems. Off the coast of Pompano Beach, Florida, a Holocene storm deposit contains large accumulations of subfossil Acropora palmata fragments with these same encrusting organisms attached to their surfaces. The objective of this research was to create an inventory of encrusters found within the storm deposit and document their successional outgrowth to determine the post-depositional history of sampled coral fragments. Foraminifera and coralline algae were the most common species found, and various sequences of successional outgrowth were observed that indicated fragments were either deposited gradually, immediately buried, or reworked after initial burial. This information is vital for understanding modern biodiversity on the Pompano coast, and the development of nearshore benthic marine ecosystems during the mid-late Holocene.

Alzheimer’s disease (AD) is one of the most common neurodegenerative diseases affecting an estimated 20 million worldwide. The primary pathology of AD is the progressive loss of basal forebrain cholinergic neurons, which is responsible for the cognitive decline experienced by AD patients. The mechanisms underlying this selective vulnerability have not been fully elucidated. Furthermore, oxidative stress is a key factor behind the pathology of AD leading to this neuronal loss. The current literature suggests that there are limited in-vitro models available to accurately simulate the hallmark symptoms of Alzheimer's disease (AD). The SH-SY5Y cell line has been used extensively to study neuronal stress responses but the undifferentiated cell type has been predominantly used. Undifferentiated SH-SY5Y versus differentiated SH-SY5Y have been shown to have different interaction, expression and localization with AD hallmark, amyloid-b -42. This project sought to use differentiated cholinergic cells from the line SH-SY5Y to further isolate and elucidate, in-vitro, the mechanisms behind the oxidative stress response, a key stressor in the pathology of AD. Building upon previous studies, a protocol to differentiate SH-SY5Y cells with retinoic acid (RA) and neurotrophin (BDNF) to mature neurons of the cholinergic phenotype was optimized and implemented. The results showed successful differentiation into the cholinergic phenotype as evidenced via immunofluorescence imaging of choline acetyl transferase (ChAT) expression and mature neurite morphology. To simulate oxidative stress, we exposed both undifferentiated and differentiated SH-SY5Y cells to hypoxic conditions. Results indicated a stress response to mild hypoxic conditions with higher sensitivity in cholinergic differentiated SH-SY5Y. Understanding these hallmark mechanisms behind oxidative stress is crucial to developing mechanism-based therapeutics for AD.

Reefs off the coast of Florida face threats from stressors associated with climate change which leads to phase shifts. Under rapid climate change, a clear understanding of how reefs and their benthic organisms respond is still lacking and needs to be investigated. Using in situ imagery, a sponge cell model, and long-term benthic biota surveys, the effects of climate change on reef dynamics were explored in this dissertation project. Results from the in situ imagery found that differences in spectral signatures are found between functional groups (i.e., corals, sponges, and algae) and different species from substrate. Results based on a sponge cell model and transcriptomics data have found a resilience of these sponges to the predicted thermal extremes. Results from benthic biota surveys suggested that depth and light attenuation have the largest influence on the predicted distribution of corals, sponges, and algae at Pulley Ridge. Climate change has been impacting reef benthic biota starting at the organismal scale up to the reef scale. This research demonstrates the importance of monitoring reefs at a finer scale and determining the thresholds and limits of benthic biota to projected thermal extremes to better inform resource managers to preserve these irreplaceable ecosystems.