The Basics of American Government

Newly revised, The Basics of American Government offers a comprehensive overview of the American political system for students taking introductory courses in American national government and combines the best aspects of both a traditional textbook and a reader. The Basics of American Government is a collaborative effort among eight current and one former faculty members in the Department of Political Science & Criminal Justice at the University of North Georgia. Most of its chapters offer a piece of original scholarship as a case study bolstering the material in the chapter. Additionally, most chapters present a civic engagement-type exercise and discussion questions that are challenging and engaging, and help foster student participation in the political system. The purpose of this book is to offer a no-frills, low-cost, yet comprehensive overview of the American political system for students taking introductory courses in American national government. A print version of this book is available for $27.99. Contact the University of North Georgia Press for details and ordering information. [email protected] | 706-864-1556https://digitalcommons.northgeorgia.edu/books/1004/thumbnail.jp

The two faces of the Jovian UV aurorae

Being mostly connected via closed magnetic field lines, the aurorae at the two poles display two broadly similar signatures of the same magnetospheric processes. However, differences are sometimes observed, indicative of asymmetries either in the polar regions (e.g. different solar illumination, magnetic anomalies, etc.) or in the magnetosphere (e.g. twisting of the magnetotail), thus showing two complementary sides of the magnetosphere-ionosphere coupling.</p><p>Whatever the planet, seeing the aurorae on both poles at the same time is challenging. Either both polar regions can be seen at once, but then only from the side, with poor spatial coverage (especially close and beyond the limb), or we need (at least) two observatories. Here we use the latter option to observe the two faces of the UV aurorae on Jupiter. In the last years, several Hubble Space Telescope observations with the Space Telescope Imaging Spectrograph (STIS) have been planned during close-up perijove observations of the poles with the UV spectrograph (UVS) on board the Juno spacecraft. The aurorae at Jupiter can be divided into three main components, with the Main Emissions, a quasi-continuous, but sometimes irregular, ribbon of auroral emissions, delimitating the outer emissions outside of it and the polar emissions inside of it. We compare the global morphology and the relative power emitted by the different auroral features in these three regions. Former studies also indicated that synchronized quasi-periodic flares could be observed in both hemispheres and we will look after similar events in this new dataset. Finally, even if the observations are delayed by approximately one hour, we can still compare the mean emitted power before (north) and after (south) each Juno perijove to look for a global trend.</p&gt

Water velocity preferences of Coho Salmon during the parr-smolt transformation

Juvenile Coho Salmon undergo many physiological changes during their springtime transformation from a freshwater parr to a migratory, seawater-capable smolt. Although field observations indicate smolts moving towards the surface and across the breadth of their streams to either swim or drift downstream with the current, water-velocity preferences of these developing cohos are unknown. Using video analysis of their swimming patterns in a calibrated, laboratory flow table with a velocity gradient, groups of three cohos generally increased their preferred water velocity through the springtime study period, to a late-May peak (daytime data, change-point regression analysis, p < 0.05) and over the entire period (nighttime data, regression analysis, p < 0.05). Moving to swifter currents should facilitate the downstream movements of these young cohos, as they develop through the parr-smolt transformation period. This information should assist managers of regulated watersheds and salmon hatcheries in optimizing juvenile salmon survival (e.g., with timely, late-spring water releases producing 0.1–0.3 m s−1 downstream water velocities)

Solar System Ice Giants: Exoplanets in our Backyard.

International audienc