College students\u27 knowledge about sexually transmitted diseases in relation to sexual self-efficacy

Resources associated with learning about sexually transmitted diseases (STDs) were investigated in relation to college students\u27 sexual knowledge and sexual self-efficacy. Participants included 50 male and 67 female students ages 18, 19, and 20 at West Virginia University. Self-report surveys included the Sexually Transmitted Disease Knowledge Questionnaire (STD-KQ; Jaworski & Carey, 2007), the Self-Efficacy Questionnaire (Cecil & Pinkerton, 1998), and a measure developed by the investigator on resources used by college students to learn about STDs. No relationship was identified between resources used to learn about STDs and college students\u27 sexual knowledge. However, sexual knowledge was a significant predictor of high levels of sexual self-efficacy to refuse sexual intercourse, question potential sex partners, and condom use. Findings in this study confirm previous research on sexual knowledge related to high levels of sexual self-efficacy. Also, information is discussed on extending research for future interventions related to sexual education and prevention of STDs on college campuses

Morphology in the Era of Large Surveys

The study of galaxies has changed dramatically over the past few decades with the advent of large-scale astronomical surveys. These large collaborative efforts have made available high-quality imaging and spectroscopy of hundreds of thousands of systems, providing a body of observations which has significantly enhanced our understanding not only of cosmology and large-scale structure in the universe but also of the astrophysics of galaxy formation and evolution. Throughout these changes, one thing that has remained constant is the role of galaxy morphology as a clue to understanding galaxies. But obtaining morphologies for large numbers of galaxies is challenging; this topic, "Morphology in the era of large surveys", was the subject of a recent discussion meeting at the Royal Astronomical Society, and this "Astronomy and Geophysics" article is a report on that meeting.Comment: Meeting Report article published in the October 2013 issue of the Royal Astronomical Society journal Astronomy and Geophysics. 4 page pdf with colour image

Space storable engine characterization Final report

Space storable turbomachinery configuration and thrust flox/methane pump-fed engine desig

KSU Chorale and Men\u27s Ensemble

The KSU Chorale and Men\u27s Ensemble, under the direction of Dr. Reid Masters, present their fall concert featuring the works of Clemons non Papa and Peter Hamlin.https://digitalcommons.kennesaw.edu/musicprograms/2317/thumbnail.jp

Galaxy Zoo: constraining the origin of spiral arms

Since the discovery that the majority of low-redshift galaxies exhibit some level of spiral structure, a number of theories have been proposed as to why these patterns exist. A popular explanation is a process known as swing amplification, yet there is no observational evidence to prove that such a mechanism is at play. By using a number of measured properties of galaxies, and scaling relations where there are no direct measurements, we model samples of SDSS and S4G spiral galaxies in terms of their relative halo, bulge and disc mass and size. Using these models, we test predictions of swing amplification theory with respect to directly measured spiral arm numbers from Galaxy Zoo 2. We find that neither a universal cored or cuspy inner dark matter profile can correctly predict observed numbers of arms in galaxies. However, by invoking a halo contraction/expansion model, a clear bimodality in the spiral galaxy population emerges. Approximately 40 per cent of unbarred spiral galaxies at z 10^10 Msolar have spiral arms that can be modelled by swing amplification. This population display a significant correlation between predicted and observed spiral arm numbers, evidence that they are swing amplified modes. The remainder are dominated by two-arm systems for which the model predicts significantly higher arm numbers. These are likely driven by tidal interactions or other mechanisms

Galaxy zoo builder:morphological dependence of spiral galaxy pitch angle

Spiral structure is ubiquitous in the Universe, and the pitch angle of arms in spiral galaxies provide an important observable in efforts to discriminate between different mechanisms of spiral arm formation and evolution. In this paper, we present a hierarchical Bayesian approach to galaxy pitch angle determination, using spiral arm data obtained through the Galaxy Builder citizen science project. We present a new approach to deal with the large variations in pitch angle between different arms in a single galaxy, which obtains full posterior distributions on parameters. We make use of our pitch angles to examine previously reported links between bulge and bar strength and pitch angle, finding no correlation in our data (with a caveat that we use observational proxies for both bulge size and bar strength which differ from other work). We test a recent model for spiral arm winding, which predicts uniformity of the cotangent of pitch angle between some unknown upper and lower limits, finding our observations are consistent with this model of transient and recurrent spiral pitch angle as long as the pitch angle at which most winding spirals dissipate or disappear is larger than 10°. © 2021 The Author(s) 2021. Published by Oxford University Press on behalf of Royal Astronomical Society