Digital Commons Network^™

Examination Of The Attitudes Towards Substance Use Treatment Approaches By Substance Use Professionals, Cameron Lacy Ortega

Theses and Dissertations

This quantitative study focuses on substance use professionals and students who are seeking employment in substance use treatment or support services. The substance use treatment profession started as a group of people who were supporting each other in recovery through abstinence based practices and has developed in to a recognized profession with multiple methods of treatment approaches. Abstinence based treatment has been and continues to be the primary method of treatment preferred in the United States. Since the 1980, harm reduction increased in application in the profession, but remains a less popular method of treatment. This study examines substance use …

Investigating The Relationship Between Dissolved Oxygen And Nitrate Concentration As A Proxy For Marine Ecosystem Health, Natalia M. Moore

Theses and Dissertations

Coastal environments such as seagrass meadows span a wide range of spatial scales and can experience disturbances that cause rapid shifts to ecosystem dynamics. Increased pressure to the coastal zone has highlighted the need for constant, real-time monitoring to monitor current ecosystem status. A custom, low cost, high resolution, in situ sensor network was designed and tested in the Lower Laguna Madre, Texas to characterize primary productivity in seagrass meadows through gradient patterns of dissolved oxygen concentration, with the purpose of determining whether seagrass or phytoplankton were the more dominant primary producer. There was a distinct vertical and horizontal gradient …

Student Success At One Borderlands Hispanic-Serving Institution, Neda Goerlitz Ramirez

Theses and Dissertations

This study investigated the perceptions of student success of campus leaders at one Borderlands Hispanic-Serving Institution. The study incorporated 4 interviews, 9 observations, analysis of 23 documents as well as additional research to answer the research questions. The three themes emerged from the study were: (1) encouraging and empowering students to succeed, (2) removing barriers to student success, and (3) serving by default. Recommendations for educational leaders included serving by design, setting high expectations, getting to know students, encouraging and empowering students, and removing barriers to student success. Additionally, the findings of this study suggest that studying student success, investigating …

Effects Of Roundup Exposure On Redox Status, Cellular Apoptosis, And Antioxidant And Osmoregulatory Enzyme Expressions In Goldfish (Carassius Auratus), Md Imran Noor

Theses and Dissertations

Intense anthropogenic activities of industrialized nations dramatically increase environmental pollution. This study focused on the effects of Roundup, a glyphosate-based herbicide, exposure (low- and high-dose: 0.5 and 5 mg/L for 2 weeks) on dinitrophenyl protein (DNP), nitrotyrosine protein (NTP), superoxidase dismutase (SOD), catalase (CAT), Na+ /K+ - ATPase (NKA), and renin expressions, and cellular apoptosis in the gills and kidneys of goldfish. Histopathological analysis showed widespread tissue damage in both gills and kidneys. Immunohistochemical analysis provided insights into the expression of molecular biomarkers in tissues. Fish exposed to Roundup exhibited a significant (P<0.05) upregulation in DNP, NTP, SOD, and CAT expressions, and apoptotic nuclei in both tissues. Additionally, exposure to Roundup significantly increased renin expression in kidneys and decreased NKA expression in gills. Overall, our results suggest that exposure to Roundup induces oxidative/nitrative stress and cellular apoptosis and alters osmoregulatory and antioxidant systems which may lead to impaired physiological functions in goldfish.

Growing Up Butchona On The Texas-Mexico Border A Marimacha Memoir, Julietta Rivera

Theses and Dissertations

Growing Up Butchona on the Border is a queer, Latina memoir that takes place on the Texas-Mexico border. This thesis is a journey in words and pictures that spans throughout an immigration crisis, a worldwide pandemic and the fallout that follows a world-wide lockdown; eventually leading down the rocky road to self-discovery. The thesis opens with a fictional account of Torita Torcida, a seven-year-old Honduran immigrant that makes her way across the Texas-Mexico border with her mother only to be ripped away from her when the truck they were smuggled in is seized by border patrol. Images and words come …

Incorporating Native Plants In Insectary Strips To Promote Insect Diversity And Below-Ground Beneficial Microbes In South Texas, Lindsey N. Richards

Theses and Dissertations

Farm edges are generally the most undisturbed areas in a farm with diverse vegetation and can enhance agrobiodiversity and provide crucial food and shelter for wildlife, insects, and soil biota. Planting native wildflowers with the ability to reseed and withstand local climatic conditions for semi-permanent vegetation around farm edges or in between crops has potential to biologically control pests. To test this, we ran a two-year study and installed three different flowering insectary strips on a certified organic vegetable farm in South Texas during the winter season. The treatments were: 1) a commercially sourced 17-species native wildflower seed mix; 2) …

Foxo Factors Regulate The Expression Of Canonical Wnt Target Genes In A Set Of Basal-Like Breast And Glioblastoma Multiforme Cancer Cell Lines, Shania Pintor

Theses and Dissertations

Basal-like breast cancer (BBC) and Glioblastoma Multiforme (GBM) each express stem gene expression signatures which are partly driven by FOXO transcription factors. Preliminary data from Gene Set Enrichment Analysis (GSEA) with RNA Seq. data indicated that a set of WNT target genes including LEF1, and TCF7 were robustly induced after 48-hours of AS1842856 (FOXO1 inhibitor) treatment. These same genes were also induced in GBM cell lines U87MG, LN18, LN229, A172, and DBTRG upon treatment with AS1842856. In contrast to FOXO1 inhibition, RNAi targeting of FOXO1, led to reduced LEF1, and TCF7 gene expression in BT549 and U87MG …

Influence Of Glucose And Lactic Acid On Macrophage Transition In Pancreatic Tumors, Anyssa A. Rodriguez

Theses and Dissertations

Pancreatic cancer is the seventh leading cause of cancer-related mortality worldwide. According to the American Cancer Society, it is the eleventh most common cancer diagnosed in both men and women in the United States. Pancreatic ductal adenocarcinoma (PDAC) comprises 90% of all pancreatic malignancies and is associated with poor clinical outcome because of late diagnosis and resistance to therapy. In addition, studies show that the tumor microenvironment has become an emerging interest in cancer research due to its complex components and unique characteristics that aid in cancer initiation, maintenance, and progression. Accumulating evidence signifies that tumor associated macrophages (TAMs) play …

Weather Parameters Influencing The Incidence Of Citrus Canker Caused By Aw Strain In The Rio Grande Valley, Amit Sharma

Theses and Dissertations

Citrus canker caused by bacterium Xanthomonas citri subsp. citri (Xcc) seriously affects the citrus industry by making the fruit unmarketable due to unsightly lesions on the fruit. Canker caused by Aw strain of Xcc was reported in the citrus trees located in the residential areas of the Rio Grande Valley (RGV). Canker severity differs amongst cultivars/varieties, and it is influenced by prevailing environmental conditions. Multiple regression modeling of the disease incidence with the environmental variables such as temperature, humidity, windspeed, wind gust, and rainfall was performed to understand the environmental conditions that are favorable for spread of citrus …

Effects Of Disturbance (Mowing) On Florivory And Floral Defenses In Solanum Elaeagnifolium, A Noxious And Worldwide Invasive Weed, Alejandro Rafael Vasquez Marcano

Theses and Dissertations

Chapter 1: Literature Review- In this literature review we have examined weed management as it concerns urban and agricultural ecosystems, as well as the need for mowing assessments as it relates to floral traits and defense against herbivory.

Chapter 2: Experiments- In the experiments we examined the role of mowing on floral growth traits, floral defense traits, and their effect on Manduca sexta specialist herbivores.

Chapter 3: Results- In the results we found SLN flowers to have larger diameters than unmowed flowers; however, flower mass was in line with our predictions as unmowed flowers were heavier in high mowing frequency …

Is It Undervalued? A Qualitative And Quantitative Review Of The Work Values-Job Performance Relationship, Sherif Al-Qallawi

Theses and Dissertations

Researchers have been calling for greater exploration of the relationship between work values and job performance for about five decades (Goodale, 1973; J.-I. C. Hansen & Wiernik, 2017). The current study integrates research on the relationship between work values and job performance over the course of those five decades to better understand this connection. First, a thorough review of work values is presented, including a discussion of their nature, antecedences, construct clarification (how they differ from other individual differences), construct specification (how they differ from other value-based constructs), operationalization, taxonomy, measurement, group differences, stability, and outcomes. This review also includes …

Internal Waves Of Port Everglades: Experimental And Numerical Studies To Characterize Ambient Magnetic Signals, Johanna Riley Evans

Theses and Dissertations

Ocean dynamics are an important contributing factor to measurable environmental magnetic noise. Seawater is conductive and as an internal wave oscillates across Earth’s magnetic field, a small yet detectable induced magnetic field develops. A significant source of underwater magnetic noise off the southeast coast of Florida comes from internal waves. Characterizing the magnetic signals present required a combination of computational modeling effort and field experiments. For this research, undersea sensors were monitored as a continuous field experiment and a computational fluid dynamic (CFD) magneto-hydrodynamic (MHD) model was customized to simulate internal wave-induced magnetic fields at the site. I developed the …

Call The Doctor! A Study Of Parental Medical Nonadherence Within Child Custody Proceedings, Karissa Lynn Cummons

Theses and Dissertations

Medical nonadherence is a common and formidable problem that many pediatric healthcare providers face when treating children with acute and chronic medical conditions because adhering to a physicians’ treatment recommendations is beneficial for successful treatment, disease prevention, and healthy promotion (Dawood et al., 2010). It was estimated that at least one third of patients are unable to complete or adhere to relatively short treatment regimens (Dawood et al., 2010). Reasons for nonadherence to a physicians’ recommendations range from extended duration of treatment, multiple prescribed medications, and periods of symptom remission (Dawood et al., 2010). Despite a parent’s or family’s reason …

Intersections Of Gender And Age: Identification And Attributional Processes On Leadership Effectiveness, Kayla Lynne Bigerton

Theses and Dissertations

As more women enter leadership roles and the ages of leaders becomes more diverse, there is a need for more intersectional research. An intersectional approach was used to assess the impact of leader gender and age on leadership effectiveness through identification and attributional processes. In doing so, different age conceptualizations were also examined. Gender did not have an impact on identification and attributional processes and age had mixed results. Age similarity was not significantly related to leader identification, but perceived leader age had a negative relationship with idiosyncratic fit. Further, social age was examined with different age ranges representing "young”, …

The Effect Of Video Model Dosage And Self-Monitoring On Parent's Use Of Language-Promoting Behavior, Kacie Marie Mcgarry

Theses and Dissertations

Previous research has found a disparity between the language trajectories of children within a high, medium, or low-economic-status family. A relationship is reliably found between the language trajectory of toddlers and success throughout school. This study will evaluate a training package to teach parents to engage in behaviors that promote language and assess the training's short-term effect on the trajectories of children (i.e., growing language) within low-socioeconomic backgrounds. Specifically, experimenters will evaluate the impact of the dosage of video modeling, self-evaluation, and self-monitoring on the acquisition of the targeted skills. Data may suggest that the more accurate the individual is …

Knowledge Integration, Complex Adaptive Systems, And The Choice Of Foreign Entry Mode: Internationalization From A Knowledge-Based Perspective, Thomas Michael Santomauro Iii

Theses and Dissertations

Knowledge is the most critical strategic asset that a firm possesses, and the ability to integrate knowledge is among the most essential determinants of competitive advantage. However, the multiple characteristics of knowledge result in inconsistent definitions, leading to a wide range of constructs and studies that yield conflicting results, reducing generalizability. Limited empirical evidence supports the proposition that knowledge integration is a function of the changing knowledge structures of firms. In this study, complex adaptive systems theory was leveraged to develop an empirical examination of the influence of knowledge complexity on foreign entry mode (FEM) choices and the subsequent ability …

Analysis Of Proposed Active Radiation Shielding Design Concept For Spacecraft, Claire Mechmann

Theses and Dissertations

A need exists to protect the crew of interplanetary spacecraft from lethal doses of Galactic Cosmic Radiation (GCR) and Solar Energetic Particles (SEPs). As plans progress to send humans beyond lower Earth orbit (LEO) and outside of Earth’s protective magnetosphere, agencies involved in this endeavor find themselves confronted with the obstacle of shielding the crew from this harmful radiation. A proposed active shielding concept design has been suggested, utilizing charged dielectric capacitors to deflect incoming charged particles. This analysis will examine the feasibility of the proposed design and offer potential materials useful for application. The results should prove informative for …

Examining The Effects Of Payload Type And Framing On Weather-Related Decision-Making In A Simulated Urban Air Mobility (Uam) Environment, Maria Chaparro Osman

Theses and Dissertations

The purpose of the current research study was two-fold. First, the study examined the effect of payload type on the riskiness of weather-related decision-making in a simulated urban air mobility (UAM) environment. Second, the current study examined whether framing information using prospect theory (Kahneman & Tversky, 1979) could influence the riskiness of weather-related decision-making in a simulated UAM environment. In the context of the current study, riskiness referred to the risk associated with the decision outcome, specifically whether participants selected a risk-averse decision outcome (return to the departure site) or risk-seeking decision outcome (continue to the destination site) based on …

Importance Of Light Activation For Plant Cryptochrome And Antibacterial Drug Delivery Strategies, Merfat Ahmed Hammad

Theses and Dissertations

The goal of this project is to investigate the benefits of applying light in different systems. In the first part, the magnetoreception process that occurs in the light activated cryptochrome of Arabidopsis Thaliana was investigated. In the second part, photo-carbon monoxide releasing molecules (photo-CORMs) were investigated for their antibacterial effect to develop biomedical strategies. Overall, this has been achieved in three different studies. The first study investigated if the forward lightdriven reaction is involved in the magnetoreception process or not in cryptochrome (CRY). To accomplish this, the plant seedlings were tested for 90 minutes as follows: 5 minutes in the …

Investigating The Role Of Cryptochrome Activity In Arabidopsis Plant And Blue Light Exposure In Saos-2 Cell-Mediated Mineralization, Maria Nijr Albaqami

Theses and Dissertations

Cryptochromes (CRYs) are flavoproteins that absorb blue light and are associated with the perception of electromagnetic stimuli in a variety of organisms including animals and plants. When exposed to blue light, CRYs undergo flavin redox cycles and form radical pairs intermediates that are assumed to be magnetically sensitive as predicted by the radical-pair hypothesis. However, it is unknown if CRYs fulfill the criteria to act as biological magnetosensors. In the first aim, Arabidopsis thaliana seedlings were exposed to blue light and a time-dependent weak magnetic field at radiofrequency (RF) of 7 MHz as a diagnostic tool to test the radical-pair …

Tympanostomy Tubes In Children: A Fem Study Of Adverse Effects, Manuel Nicolas Jaramillo Bucheli

Theses and Dissertations

Background: The current study investigates if tympanic (myringotomy) tubes affect hearing by comparing the harmonic displacement response to sound excitation within the hearing frequency range for healthy vs. surgically-treated pediatric tympanic membranes. The use of ear myringotomy tubes has proven an effective method for combating recurrent ear infections in infants and children. These tubes are placed in the tympanic membrane through an incision and connect the middle ear to the external ear, thereby allowing fluid drainage and middle-ear ventilation. While this treatment has been proven beneficial in alleviating urgent pus accumulation in the middle ear, recent research shows that it …

The Effect Of Zonation, Biofouling, And Corrosion Products On Cathodic Protection Design For Offshore Monopiles, Caglar Erdogan

Theses and Dissertations

Cathodic protection (CP) is required to prevent corrosion of the submerged steel for offshore wind monopile foundations in the marine environment. The design of these systems depends on the environmental conditions, including temperature, salinity, pH, dissolved oxygen, depth, micro- and macro-organisms, and water flow rates. The standards utilized to design cathodic protection systems consider only some of these conditions. This research identified the gaps in knowledge for the design of corrosion prevention systems for offshore wind monopile foundations and investigated the changes in cathodic current densities due to macro-galvanic cells, fouling communities and corrosion products established on uncoated vertical steel …

Modeling Settlement And Filtration Of The Indian River Lagoon Benthic Community, With An Emphasis On Living Dock Restoration Mats, Sandra Lisette Rech

Theses and Dissertations

The Indian River Lagoon (IRL) is one of the most biologically diverse estuaries in North America. An increase in population and anthropogenic effects have led to eutrophication, a decline in water quality, and overall degradation. The Living Docks program is a citizen science initiative started at the Florida Institute of Technology for lagoon restoration. In this program, public and private docks are volunteered to become Living Docks, where oyster mats made of plastic mesh and dead, dried oyster shells are attached to dock pilings in an effort to provide a natural substrate for benthic organism growth. The community which develops …

Headache Disorders And Neurocognitive Performance Pre- And Post-Concussive Injury, Kaci Gorres

Theses and Dissertations

Objective: The aim of this study is to examine the relationship between pre-existing headache disorders, such as headache or migraine, and neurocognitive testing obtained before and after college-athletes sustain a concussion. Method: A total of 1129 NCAA Division II college athletes from Florida Tech were included in the present study. Participants were included in this study if they completed baseline and/or post-trauma neuropsychological evaluations that included the Sports Concussion Assessment Tool – Fifth Edition (SCAT-5) and Immediate Post-Concussion Assessment and Cognitive Tool (ImPACT). Athletes’ headache and/or migraine history was self-reported at baseline and indicated their position in headache history or …

On Clinical Use Of Infrared Cameras For Video-Based Estimation Of 3d Facial Kinematics, William Mackenzie Harrington

Theses and Dissertations

Neurological and neurodegenerative disorders such as Parkinson’s disease (PD), amyotrophic lateral sclerosis (ALS), and stroke can cause speech and orofacial motor impairments with devastating effects on quality of life. Analysis of orofacial movement provides vital information for early diagnosis and tracking disease progression, but current clinical practice relies on perceptual assessments performed by clinicians, which are unreliable and insensitive to early symptoms. New methods in machine learning have enabled automatic and objective assessment of orofacial kinematics from color and depth videos, hence we introduce MEADepthCamera, a mobile application for RGB-D video and audio recording and automatic estimation of 3D facial …

Performance Comparison Of Weak And Strong Learners In Detecting Gps Spoofing Attacks On Unmanned Aerial Vehicles (Uavs), Aydan Gasimova

Theses and Dissertations

Unmanned Aerial Vehicle systems (UAVs) are widely used in civil and military applications. These systems rely on trustworthy connections with various nodes in their network to conduct their safe operations and return-to-home. These entities consist of other aircrafts, ground control facilities, air traffic control facilities, and satellite navigation systems. Global positioning systems (GPS) play a significant role in UAV's communication with different nodes, navigation, and positioning tasks. However, due to the unencrypted nature of the GPS signals, these vehicles are prone to several cyberattacks, including GPS meaconing, GPS spoofing, and jamming. Therefore, this thesis aims at conducting a detailed comparison …

An Indepth Look On Earth-Anchoring Through Architectural Treatments To Mitigate Psychological And Psychosocial Issues During Long-Duration Spaceflight, Skye Elizabeth Schwartz

Theses and Dissertations

Astronauts' mental health is of significant concern for any spaceflight mission. For low-Earth orbit (LEO) spaceflights, crews are four to six hours away from home. They can still see planet Earth, and if there is an emergency, there are escape routes; however, when it comes to long-duration spaceflights millions of miles away from home, crews cannot see planet Earth, cannot turn around in an emergency and are on their own in a monotone and sterile environment. These desensitizing conditions directly impact astronauts’ psychological and psychosocial well-being. Crews must learn how to interact with each other for an extended period, considering …

South Texas Wildlife Activity Across A Fragmented Landscape And Road Mitigation Corridor, Caitlin K. Brett

Theses and Dissertations

Wildlife crossing structures (WCS) and roadside fencing are commonly installed to mitigate habitat fragmentation, wildlife road mortalities, and other negative effects that roads can have on the surrounding landscape. Eight such WCS were constructed below Farm-to-Market (FM)106 in Cameron County, Texas, across a 16 km corridor transecting the Laguna Atascosa National Wildlife Refuge. These WCS, paired with adjacent roadside fencing, were intended to prevent road mortalities of the endangered ocelot (Leopardus pardalis) and to mitigate the barrier effect of FM106 on this and other meso-mammal species. This study will analyze camera trap data from roadside and habitat reference …

Grapefruit Peel Biochar Applications For Immobilizing Copper And Lead In Soil, Michael Alfredo Navarro

Theses and Dissertations

This study investigated the efficacy of grapefruit peel (GP) derived biochar materials (two pyrolysis temperatures 450°C and 800°C) as a potential adsorbent to immobilize heavy metal (copper and lead) in a local sandy loam clay soil. A batch adsorption test with heavy metal concentrations at 50 mg L-1, and 100 mg L-1 revealed that soil itself had the highest immobilization percentage compared to the GP biochars. A soil column experiment was conducted to determine how much the GP biochar samples and the tested soil will exhibit adsorptive characteristics for heavy metals when 50 ml of 50 mg L-1 copper or …

Synthesis Of Bioactive Heterocycles, Shaila Akter Shetu

Theses and Dissertations

The Discovery of a variety of heterocyclic drugs for the treatment of cancer and other diseases (e.g, neglected tropical diseases) is a medical breakthrough and inspiring for the research community as a whole. A wide range of natural, semi-synthetic, and synthetic anticancer drugs are synthesized using various methods. Among them, β -lactams stand out as a novel class of antibiotics that has different types of biological as well as anti-cancer properties. β -lactam has become a premier and active research subject towards the development of revolutionary anti-cancer drugs. In recent years, a large amount of investigations have been done to …