LOUIS University of Alabama in Huntsville
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Impact of an integrated yoga and body image program on body image, self-esteem, and physical activity in African American adolescent girls
No full textThe literature posits body dissatisfaction in the adolescent maturational period is a risk factor for the development of numerous negative health outcomes. These include but are not limited to; depressive symptoms, suicide, low self-esteem, unsafe sexual behaviors, onset of smoking, poor academic achievement, and overweight/obesity. The female adolescent African American population suffers disparately from health issues associated with cultural and normative influences that impact body image, self-esteem, and physical activity. Hence, the importance of early risk assessment and intervention. In the literature, school-based body image programs have been shown to improve body image in adolescent girls. African American girls represent a marginalized and underrepresented group in terms of culturally responsive interventions that seek to mitigate negative health outcomes that they are disproportionately burdened with. This project targeted the female African American adolescent population (ages 10-15) to participate in a program to enhance positive body image, self-esteem, and physical activity. A total of 20 participants were recruited for this project. Results showed there was a statistically significant median increase in Body Appreication Scores (4.55) for post intervention compared to pre intervention (4.33), and statistically significant median increase in Self- Esteem Scores (30.55) for post intervention compared to pre intervention (29.55). However, there was not a statistically significant difference in physical activity scores. The outcomes of this project underscore how nurses can be at the forefront for continued development of culturally tailored interventions that target under researched and diverse populations given these interventions have great potential for significant impact and sustainability
The impact of the 2018 camp fire on land-atmosphere interactions
Get PDFResearch on the effects of wildfire-induced changes in land use and land cover (LULC) on atmospheric processes is limited. This thesis presents a thorough analysis using satellite remote sensing and numerical modeling to examine how land-atmosphere interactions have been altered by the burn scar from the 2018 Camp Fire event in California. Satellite data reveals significant changes in surface characteristics affecting land-atmosphere interactions, such as land cover type, vegetation fraction (-0.12), albedo (+0.01), daytime temperature (+2.5 K), and roughness length (\u3e-90%). Numerical modeling, based on satellite-derived LULC change scenarios, indicates notable shifts in net radiation (-0.2 MJ m-2), sensible heat flux (+15Wm-2), diurnal temperature range (+5%), mesoscale circulation patterns, and rainfall patterns. The influence on cloud formation and rainfall is heightened by the fire scar\u27s occurrence in complex terrain, with implications for water resource management and assessing drought-flood risks in fire-prone areas
Shocks and cold fronts in merging galaxy clusters
Get PDFGalaxy clusters, found at the nodes of the large-scale structures in the universe, are the most massive gravitationally bound and virialized structures in the Universe. They are formed via accretion, gravitational infall, and hierarchical mergers of smaller sub-clusters and galaxy groups. Mergers of galaxy clusters are the most energetic events in the Universe after the Big Bang, wherein the sub-clusters collide at velocities of ~1000km/s, releasing energy of the order of 10^(64) ergs. During such a merger, the galaxies and dark matter of both clusters interact only gravitationally and move unhindered through the region of the collision. This dissertation presents findings from the new deep Chandra observations (256 ks) of the merging galaxy cluster SPT-CLJ 2031-4037. Our observations reveal intricate structures seen in a major merger akin to the Bullet Cluster. The X-ray data confirm the existence of two shock fronts, one to the northwest and one to the southeast, by directly measuring the temperature jump of gas across the surface brightness edges. The stronger shock front in the northwest has a density jump of 3.11 +/- 0.32 across the sharp surface brightness edge and a Mach number M = 3.23^(+0.89)_(-0.56), which makes this cluster one of the rare merging systems with a Mach number M\u3e2. The northwestern shock is used to compare two models for shock heating - the instant heating model and the Coulomb collisional heating model, and it is determined that the temperatures across the shock front agree with the Coulomb collisional model of heating. For the shock front in the southeastern region, there is a density jump of 1.53 +/- 0.14 and a Mach number M = 1.36 ^(+0.09)_(-0.08). In addition, I will also present new results of cold fronts in the nearby Perseus Cluster, which are also produced by galaxy cluster merging activity, and provide insights into its merger history
Developing an Aerosol Database for Understanding Aerosols\u27 Effects on Atmospheric Processes and for HEL Research and Applications
Get PDFA systematic comprehensive pressure injury (PI) preventive plan to guide care
No full textPatients living in long-term care facilities are highly susceptible to developing pressure injuries. Decubitus and pressure ulcers, commonly identified as pressure injuries, are potentially the most highly preventable injuries in the healthcare setting. These adverse events remain a critical problem. Pressure injuries in the United States continue to increase due to a growing aging population and a lack of efficient, theory-based preventive plans. Examining this healthcare concern as a crisis versus an inevitable run-off of long-term care gives practitioners a necessary perspective to reverse and eliminate pressure injury prevalence. Pressure injuries frequently occur among older adults with compromised health and mobility problems. Many aged adults live with a physical or cognitive disability and other health issues such as obesity, diabetes, cardiovascular, peripheral vascular, and chronic obstructive pulmonary disease, which requires care dependency. Pressure injuries develop when tissue has been damaged due to diminished blood supply to localized areas, causing increased pressure, shearing, and friction to bony prominences. The most affected areas are the shoulders, elbows, hips, sacrum, knees, ankles, and heels. Pressure injury (PI) development is associated with approximately 2.5 million hospitalizations annually, with a significant financial burden on the healthcare system caused by prolonged care and treatment estimated at 11 billion dollars annually. Subsequently, pressure injuries are associated with severe illness, advanced age, and care dependency. The primary objective of the Doctor of Nursing Practice (DNP) clinical practice change project was to decrease the incidence of PIs in a long-term care unit by implementing a PI preventive plan. Despite healthcare education advances, pressure injuries remain a significant and common problem. Instrumental in preventing PIs involves continuing education and learning through the practice of skilled-based education related to the preventive care and treatment of PIs. Equally relevant to PI prevention is skilled-based instruction that applies to layering education, creating valuable opportunities in the clinical setting to develop critical-thinking skills and fostering clinical decision-making proficiencies to improve knowledge of PI prevention, which is essential in nursing practice
Exploring the impact of ionizing radiation on security and reliability in modern semiconductor memories
Get PDFRadiation effects in semiconductor devices have gained great traction in recent years due to an exponential growth in space exploration. The harsh conditions of space, devoid of the atmosphere and Earth\u27s magnetic field, pose considerable challenges to electronic systems due to ionizing radiation exposure. While radiation-hardened (rad-hard) components are continually under development, they often lag several technology generations compared to commercial off-the-shelf (COTS) parts. Notably, rad-hard memories, particularly in terms of capacity (megabytes vs. terabytes) and cost, fall short compared to regular COTS memories. This underscores the compelling need to evaluate the radiation tolerance of COTS memories. This dissertation focuses on ionizing radiation effects on NAND flash and Static Random Access Memory (SRAM). We explore the total-ionizing-dose (TID) effects on 3D NAND by studying the bit error pattern with TID. We find that electrical noise contributes to a significant percentage of bit-errors and that radiation causes noise to increase during memory read operation. We present a powerful mitigation strategy to counteract radiation-induced noise increase by pre-programming factory-erase memory blocks before deployment. Furthermore, we investigate TID effects on the power-up characteristics of COTS-SRAM memories. The SRAM power-up state, serving as a unique digital fingerprint or physical unclonable function (PUF) for device authentication, undergoes significant alterations due to ionizing radiation exposure. This may lead to authentication failures in the space and other harsh environment. To protect SRAM PUF from ionizing radiation, we propose a robust mitigation strategy involving the storage of an appropriate data pattern during irradiation. Lastly, we explore ionizing radiation as a potential attack vector posing a significant security threat to SRAM-based computing systems. Our research uncovers data imprinting effects caused by ionizing radiation, which could be exploited by adversaries for data leakage. Additionally, ionizing radiation induces a substantial reduction in SRAM data remanence time, and we present this as a mitigation strategy against security attacks relying on SRAM data remanence
Legacy of Sir Christopher Wren and His City Churches
Get PDFhttps://louis.uah.edu/honors-399/1010/thumbnail.jp
Game Theoretic Strategies to Optimize Global Healthcare Resource Allocation during Pandemics
Get PDFhttps://louis.uah.edu/rceu-hcr/1483/thumbnail.jp