353 research outputs found
Building Student Success and Retention through an Enhanced Peer Counseling Program
In recognition of increasing rates of repeated ground schools and flight lessons, in combination with decreasing retention rates in the flight programs at Embry-Riddle Aeronautical University, the Department of Aeronautical Science in the College of Aviation took initiative to create a program that identified struggling students before they reached excessive failure or financial distress. The students identified in the Student Success Initiative (SSI) after being assessed would be required to attend a mediation session with their academic and flight training staff in order to create a specialized training program
A pair of Jovian Trojans at the L4 Lagrange point
Asteroid pairs, two objects that are not gravitationally bound to one
another, but share a common origin, have been discovered in the Main belt and
Hungaria populations. Such pairs are of major interest, as the study of their
evolution under a variety of dynamical influences can indicate the time since
the pair was created. To date, no asteroid pairs have been found in the Jovian
Trojans, despite the presence of several binaries and collisional families in
the population. The search for pairs in the Jovian Trojan population is of
particular interest, given the importance of the Trojans as tracers of
planetary migration during the Solar system's youth. Here we report a discovery
of the first pair, (258656) 2002~ES and 2013~CC, in the Jovian
Trojans. The two objects are approximately the same size and are located very
close to the L4 Lagrange point. Using numerical integrations, we find that the
pair is at least ~Myr old, though its age could be as high as several
Gyrs. The existence of the (258656) 2002~ES--2013~CC pair implies
there could be many such pairs scattered through the Trojan population. Our
preferred formation mechanism for the newly discovered pair is through the
dissociation of an ancient binary system, triggered by a sub-catastrophic
impact, but we can not rule out rotation fission of a single object driven by
YORP torques. A by-product of our work is an up-to-date catalog of Jovian
Trojan proper elements, which we have made available for further studies.Comment: 15 figs. Accepted for publication in MNRA
Research Benefits for Scholarly Authors Being Published on a Public Forum
The previous construct of research was focused on social media platforms as a benefactor in broadcasting towards a global audience with non-academic professions. Following along the same ideology, this research directs the attention to a pertained audience in academic profession.
•Embry-Riddle is the host of Scholarly Commons which collects the research of authors (faculty members), and assists in developing a digital portfolio. This portfolio creates metric measurements on a dashboard to indicate where downloads are occurring, and aids in providing current information pertaining to the authors’ publication. •In this case, the publication of the National Airline Quality Rating (AQR) (https://airlinequalityrating.com/) in Scholarly Commons focuses on locating members that are attracted to the quantitative research on airline performance
A Longitudinal Analysis on the Cyclical Pattern of the U.S. Airline Industry
The Airline Quality Rating (AQR) is the nation’s most comprehensive study of airline performance and quality for over two decades. AQR provides consumers and industry watchers a means to compare performance quality among different US airlines using objective performance-based data. This research looks to analyze the cyclical patterns present in AQR in order to identify trends and factors contributing to the changes in these results each year. This research utilizes the application of a longitudinal analysis methodology which will provide the correlation between factors identified and the indicators affected
Variations in HIV Prevention Coverage in Subpopulations of Australian Gay and Bisexual Men, 2017–2021: Implications for Reducing Inequities in the Combination Prevention Era
Using repeated behavioural surveillance data collected from gay and bisexual men (GBM) across Australia, we assessed trends in HIV prevention coverage (the level of ‘safe sex’ achieved in the population by the use of effective prevention methods, including condoms, pre-exposure prophylaxis [PrEP] and having an undetectable viral load). We stratified these trends by age, country of birth/recency of arrival, sexual identity, and the proportion of gay residents in the participant’s suburb. Among 25,865 participants with casual male partners, HIV prevention coverage increased from 69.8% in 2017 to 75.2% in 2021, lower than the UNAIDS target of 95%. Higher levels of coverage were achieved among older GBM (≥ 45 years), non-recently-arrived migrants, and in suburbs with ≥ 10% gay residents. The lowest levels of prevention coverage (and highest levels of HIV risk) were recorded among younger GBM (< 25 years) and bisexual and other-identified participants. Younger, recently-arrived, and bisexual GBM were the most likely to use condoms, while PrEP use was concentrated among gay men, 25–44-year-olds, and in suburbs with more gay residents. The use of undetectable viral load was most common among participants aged ≥ 45 years. Our analysis shows that high HIV prevention coverage can be achieved through a mixture of condom use, PrEP use, and undetectable viral load, or by emphasising PrEP use. In the Australian context, younger, bisexual and other-identified GBM should be prioritised for enhanced access to effective HIV prevention methods. We encourage other jurisdictions to assess the level of coverage achieved by combination prevention, and variations in uptake
Quality, Performance, and Consumer Perceptions: A National Study of US Airlines
Prior inquiry into consumer perceptions, attitudes, and overall satisfaction regarding commercial mainline passenger carriers in the United States has provided little more than a snapshot of the average air traveler. Building on 28 continuous years of research with the National Airline Quality Rating (AQR), this study attempts to move beyond descriptive information in order to identify relationships and trends in the airline industry’s performance and relate those observations to consumer perceptions. This study will utilize a comparative trend analysis methodology to analyze major United States Airlines\u27 performance and quality over the last 28 years. This methodology provides a means of tracking airline\u27s progressions and regressions in operational performance and allows for the development of theories in data shifts and trends. This study will attempt to exemplify the objective formula-driven weighted averages that constitute the Airline Quality Rating. The development of this qualitative model provides industry leaders with the ability to improve their understanding of airline performance and make adjustments to their operations for continued growth development.
The student authors are affiliated with the Department of Safety in the College of Aviation at Embry-Riddle Aeronautical University in Prescott, AZ. Tori Kobayashi and Kaetlyn Blocker are graduate students in the College of Aviation, MS Safety Science program. Calissa Spooner is an undergraduate student in the Industrial Psychology and Safety program
Adjusting Behavioural Surveillance and Assessing Disparities in the Impact of COVID-19 on Gay and Bisexual Men’s HIV-Related Behaviour in Australia
COVID-19 has disrupted sexual behaviour and access to health systems. We adapted regular HIV behavioural surveillance of gay and bisexual men (GBM) in Australia in response to COVID-19, assessed the impact on the profile of the sample, the participants’ HIV-related behaviour, and whether COVID-19 may have accentuated existing disparities in the Australian HIV epidemic. Data collected from five states during July 2017–June 2021 were included (N = 31,460). The emphasis on online recruitment after COVID-19 led to smaller sample sizes, greater geographic reach, and a higher proportion of bisexual-identifying participants. Most participants (88.1%) reported physical distancing and 52.1% had fewer sex partners due to COVID-19. In the COVID-19-affected rounds (July 2020–June 2021), the number of male partners, recent HIV testing and pre-exposure prophylaxis (PrEP) use all fell, and HIV risk among the smaller group of participants who reported casual sex increased. COVID-related changes were generally more pronounced among GBM aged under 25 years, participants from suburbs with fewer gay residents, and bisexual men. These groups should be prioritised when encouraging GBM to reengage with HIV testing services and effective prevention methods, like condoms and PrEP
Airline Customer Satisfaction 2015-2017 Results
Previous research on perceptions, satisfaction, and attitudes regarding the major commercial air carriers in the United States has provided little more than an interesting descriptive representation of the average air traveler. This study moves beyond basic descriptive information of air travelers to identify attitudinal patterns and relationships in the way consumers at varying levels of travel frequency view the commercial air industry. The Airline Passenger Survey (APS) elements developed via the utilization of rigorous scientific methodology, with the intention of capturing the most important data from passengers while reducing confusion or variability in comprehension of questions. APS items are a combination of demographic variables, categorical data, and Likert-type scale responses asking participants to evaluate statements regarding the current state of the airline industry
Time‐lapse photogrammetry reveals hydrological controls of fine‐scale High‐Arctic glacier surface roughness evolution
In a warming Arctic, as glacier snowlines rise, short- to medium-term increases in seasonal bare-ice extent are forecast for the next few decades. These changes will enhance the importance of turbulent energy fluxes for surface ablation and glacier mass balance. Turbulent energy exchanges at the ice surface are conditioned by its topography, or roughness, which has been hypothesized to be controlled by supraglacial hydrology at the glacier scale. However, current understanding of the dynamics in surface topography, and the role of drainage development, remains incomplete, particularly for the transition between seasonal snow cover and well-developed, weathered bare-ice. Using time-lapse photogrammetry, we report a daily timeseries of fine (millimetre)-scale supraglacial topography at a 2 m2 plot on the Lower Foxfonna glacier, Svalbard, over two 9-day periods in 2011. We show traditional kernel-based morphometric descriptions of roughness were ineffective in describing temporal change, but indicated fine-scale albedo feedbacks at depths of ~60 mm contributed to conditioning surface topography. We found profile-based and two-dimensional estimates of roughness revealed temporal change, and the aerodynamic roughness parameter, z0, showed a 22–32% decrease from ~1 mm following the exposure of bare-ice, and a subsequent 72–77% increase. Using geostatistical techniques, we identified ‘hole effect’ properties in the surface elevation semivariograms, and demonstrated that hydrological drivers control the plot-scale topography: degradation of superimposed ice reduces roughness while the inception of braided rills initiates a subsequent development and amplification of topography. Our study presents an analytical framework for future studies that interrogate the coupling between ice surface roughness and hydro-meteorological variables and seek to improve parameterizations of topographically evolving bare-ice areas
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