Things Found in My Basement

Things Found in My Basement is a poem about the bittersweet, sometimes heart-wrenching feelings parents get when realizing how unforgiving time is. This poem is simplistic, exploring the power that everyday surroundings can have on our emotions. Sometimes, just looking over at a tower of boxes left on the basement floor can spark nostalgia and yearning for moments frozen in time

COE Presents: Brazil

A lively showcase of Brazilian traditions featuring regional treats, playful challenges, and cultural insights

ELF/VLF Whistler-Mode Waves in Magnetic Ducts

This dissertation presents a comprehensive investigation into the propagation and behavior of extremely-low frequency (ELF) and very-low frequency (VLF) whistler-mode waves within small-scale irregularities of the Earth\u27s magnetospheric magnetic field, known as magnetic ducts. These irregularities, observed by NASA\u27s Magnetospheric Multiscale (MMS) mission, are categorized as high-magnetic ducts (HBDs), where the magnetic field inside the duct is stronger than the surrounding field, and low-magnetic ducts (LBDs), where the field is weaker. Analytical criteria for wave ducting within these structures are derived and validated through two-dimensional, time-dependent electron-magnetohydrodynamic (EMHD) simulations, demonstrating the ability of these ducts to guide waves effectively. A detailed analysis of LBDs reveals their susceptibility to electromagnetic energy leakage. However, a non-leaking propagation condition is identified, whereby the duct width aligns with an integer multiple of the perpendicular wavelengths of the waves inside it. This condition provides a practical method for identifying non-leaking eigenmodes, with the number of such modes being proportional to the duct\u27s width and the ambient magnetic field magnitude. The propagation of these non-leaking waves observed by MMS is successfully modeled using EMHD simulations. The study also explores the phenomenon of mode switching between two whistler-mode waves with the same frequency and parallel wavelength but different perpendicular wavenumbers in regions with transverse inhomogeneities in plasma density and magnetic field. Analytical criteria for this mode switching are established and confirmed via simulations, revealing its dependence on critical values of plasma density and magnetic field within finite-sized transition layers. Additionally, new findings on magnetic shelf structures are presented, where observations from MMS are compared with similar waves guided by density shelves observed by the Van Allen Probes. Simulations demonstrate that magnetic shelves, akin to density shelves, effectively guide whistler-mode waves along the ambient magnetic field with minimal attenuation. The parameters of the guided waves are shown to depend on the characteristics of the shelves, with distinct differences and similarities between magnetic and density shelf ducting explored. Finally, a statistical analysis of 687 ELF/VLF wave events within B-ducts is conducted, examining spatial distributions and underlying mechanisms across different magnetospheric regions. Differences between dawn-side flank and night-side magnetotail events are identified, highlighting the influence of plasma density, magnetic field extrema, and wave parameters on B-duct formation and wave propagation. These findings enhance the understanding of ELF/VLF wave dynamics in Earth\u27s space environment, providing a framework for future studies of wave-particle interactions and ducted wave phenomena

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https://commons.erau.edu/smarter-educators-conference-2025-gallery/1034/thumbnail.jp

Aerocare - Unmanned Aerial Delivery Vehicle

Certain remote areas have limited access to life saving medical supplies. Currently medical delivery efforts are reliant on ground transportation, which consumes both valuable time and resources. Studies show that aerial transport of supplies significantly decreases delivery time in both urban and rural environments. An unmanned aerial transport has the potential of reducing cost and delivery time while filling this need for medical supplies. The AeroCare project aims to pursue the development of an unmanned medical delivery aircraft capable of dropping a payload midflight. The aircraft will fly for at least 100 miles in under an hour while carrying 4 pounds of medical supplies. A normal mission will start with a short take-off (less than 56 feet), followed by a 1000 ft/min climb to the cruising altitude of 1000 feet above ground level. A descent to 400 feet will be performed before delivery where the medical package will be deployed from the internal payload bay. The aircraft will then climb back to its cruising altitude to return for recovery and resupply. Preliminary analysis has been completed on multiple design concepts, which were compared to pick a singular aircraft shape. A high-wing, conventional-tail aircraft was selected after analysis into the cruise efficiency, stability, and manufacturability of each design. The plane will be powered by a 2-stroke gas engine since gasoline has high energy density and low cost. A 2-stroke is also lighter than a 4-stroke and more reliable than a turbine at this scale

Behavioral Assessment Software: Enhancing Polygraph and Investigative Interviewing

In the rapidly evolving world of security, law enforcement, and investigative sciences, professionals are increasingly turning to advanced technologies to supplement tried-and-true methodologies. One emerging innovation is behavioral assessment software, designed to enhance both pre-employment screening and investigative interviewing. Acting as a form of modern human intelligence collection, these tools enable examiners and investigators to gather deeper insights directly from candidates and subjects, revealing behavioral cues and risk indicators that might otherwise remain hidden (Vrij, 2008). Importantly, behavioral assessment software is not intended to replace polygraph or other traditional investigative methods. Instead, it functions as a complementary resource—one that provides examiners with more data, sharper focus, and increased efficiency (National Research Council, 2003)

Evaluating the Physiological Effects of a Spacesuit While Performing CPR

Limited research exists on the challenges of performing cardiopulmonary resuscitation (CPR) while wearing a spacesuit/pressure suit; but, during a space mission or following spacecraft egress, astronauts may need to perform Basic Life Support (BLS) on a crewmember. BLS consists of CPR and External Chest Compressions (ECC). In an emergency, astronauts may not have time to remove their intravehicular (IVA) spacesuits/pressure suits or wait for their heart rates to return to resting conditions and, therefore, would have to perform CPR while physically exerted. This study sought to evaluate the physiological exertion on rescuer performance while performing ECCs over 6 minutes while wearing a commercially available IVA spacesuit supplied by Final Frontier Design (FFD). Twelve (12) participants were divided into three groups balanced by age, gender, and body mass index (BMI). Each group performed three trials: Performing CPR without wearing the IVA spacesuit, performing CPR while wearing the IVA spacesuit, and performing CPR while wearing the IVA spacesuit following physical exertion. The sequence in which trials were performed was randomized across groups. Heart rate and blood pressure readings were taken before and after each trial. Analysis suggests that the addition of the suit alone increased heart rate and, therefore, physiological stress while performing CPR, and with physical exertion adding even more stress

Political Turbulence and Aviation Safety: A Cross-National Analysis of Political Stability\u27s Effects on Aviation Accidents

To what extent does political stability affect aviation safety? This research aims to link domestic political conditions and public safety through the consideration of aviation accident frequency. Political instability can indeed have profound effects on reducing overall public safety in a variety of domains through its influence on public policies. Reduced regulations and governance efforts can appear in contentious contexts for less-prioritized fields. This could influence the reemergence of technical aviation risk factors like crew training and performance, maintenance issues, infrastructure problems, human errors, etc. This would highlight a correlation between such political instability and weaker aviation safety regulations, investments and operational efficiency. A country-year level dataset was originally aggregated and created by integrating the political instability indicators from V-Dem and the World Bank as well as the Aviation Safety Network data. A multivariate negative binomial regression analysis on aviation accidents worldwide between 1996 and 2022 is then conducted. Results show that political instability is indeed negatively correlated to greater aviation safety when accounting for various alternative variables. This suggests that policy interventions enhancing political stability could benefit both public safety and a growing economic and social sector that is aviation. This also suggests that focus on aviation safety is only efficient when coupled with political stabilization processes

Discover Eaglesearch: Using the Hunt Library For Your Research

In this webinar, you will learn how to effectively use the Hunt Library\u27s search tool, EagleSearch, to search over 100 databases at once