Violently Possessed: Johnson as the Vehicle for limiting Sentencing Enhancement under the Armed Career Criminals Act

This commentary previews an upcoming Supreme Court case, Johnson v. United States in which the Court will decide whether conviction for mere possession of a short-barreled shotgun qualifies as a violent felony that warrants sentence-enhancement under the Armed Career Criminals Act. The Author argues that he plain text of the statute and the Court\u27s prior cases on the issue suggest tat convictions for mere possession do not satisfy the definition of violent felony and that the Court should overturn the Eighth Circuit\u27s ruling upholding Johnson\u27s sentence enhancement

Outcomes Based Assessment of Universities

This study summarizes recent and continuing research conducted by the Center for College Affordability and Productivity (CCAP) on the metrics used for measuring college performance. Unlike other rankings, this study does not concentrate on the inputs of college education such as endowment size, number of faculty, or the educational preparation of students as measured by SAT scores, etc. Instead, it focuses on the outputs, namely the success of students after graduation. Using the names of entrants in Marquis Publishing's 2008 edition of Who's Who in America as our standard for measuring high levels of success, we collected the names of over 5,200 individuals, along with their educational background.This is more than a 5 percent sampling of all names listed in this standard reference work. From this sample, we then calculated which colleges produced the most successful graduates. The results thus far have been both fascinating and surprising.We have found that while going to top ranked schools as measured by standard college rankings does correlate with success, it is a weaker relationship than many may have previously believed. The study reveals that the "industry standard," U.S. News & World Report (USNWR) rankings, on the whole, is only weakly related to graduate success. This suggests that the characteristics contributing to the value of a student's education differ substantially from what is typically assumed. The goal of this study is not to serve as a definitive source for ranking and comparing colleges. Rather, the research presented herein will hopefully serve as both an impetus and road ma

Magnetic Untwisting in Most Solar X-Ray Jets

If TypeII spicules are made like Xray jets by granulesize emerging bipoles, then they plausibly power the quiet corona and solar wind

Filament Eruptions, Jets, and Space Weather

Previously, from chromospheric H alpha and coronal Xray movies of the Sun's polar coronal holes, it was found that nearly all coronal jets (greater than 90%) are one or the other of two roughly equally common different kinds, different in how they erupt: standard jets and blowout jets (Yamauchi et al 2004, Apl, 605, 5ll: Moore et all 2010, Apj, 720, 757). Here, from inspection of SDO/AIA He II 304 A movies of 54 polar x-ray jets observed in Hinode/XRT movies, we report, as Moore et al (2010) anticipated, that (1) most standard x-ray jets (greater than 80%) show no ejected plasma that is cool enough (T is less than or approximately 10(exp 5K) to be seen in the He II 304 A movies; (2) nearly all blownout X-ray jets (greater than 90%) show obvious ejection of such cool plasma; (3) whereas when cool plasma is ejected in standard X-ray jets, it shows no lateral expansion, the cool plasma ejected in blowout X-ray jets shows strong lateral expansion; and (4) in many blowout X-ray jets, the cool plasma ejection displays the erupting-magnetic-rope form of clasic filament eruptions and is thereby seen to be a miniature filament eruption. The XRT movies also showed most blowout X-ray jets to be larger and brighter, and hence to apparently have more energy, than most standard X-ray jets. These observations (1) confirm the dichotomy of coronal jets, (2) agree with the Shibata model for standard jets, and (3) support the conclusion of Moore et al (2010) that in blowout jets the magnetic-arch base of the jet erupts in the manner of the much larger magnetic arcades in which the core field, the field rooted along the arcade's polarity inversion line, is sheared and twisted (sigmoid), often carries a coolplasma filament, and erupts to blowout the arcade, producing a CME. From Hinode/SOT Ca II movies of the polar limb, Sterling et al (2010, ApJ, 714, L1) found that chromospheric TypeII spicules show a dichotomy of eruption dynamics similar to that found here for the coolplasma component of coronal Xray jets. This favors the idea that TypeII spicules are miniature counterparts of coronal Xray jets. In Moore et al (2011, ApJ, 731, L18), we pointed out that if TypeII spicules are magnetic eruptions that work like coronal Xray jets, they carry an areaaveraged mechanical energy flux of approximately 7x10)(exp 5) erg cm(exp -2) s(exp-1) into the corona in the form of MHD waves and jet outflow, enough to power the heating of the global corona and solar wind. On this basis, from our observations of minifilament eruptions in blowout Xray jets, we infer that magnetic explosions of the type that have erupting filaments in them are the main engines of both (1) the steady solar wind and (2) the CMEs that produce the most severe space weather by blasting out through the corona and solar wind, making solar energetic particle storms, and bashing the Earth's magnetosphere. We conclude that in focusing on prominences and filament eruptions, Einar had his eye on the main bet for understanding what powers all space weather, both the extreme and the normal

DrosoPhyla: Resources for Drosophilid Phylogeny and Systematics.

The vinegar fly Drosophila melanogaster is a pivotal model for invertebrate development, genetics, physiology, neuroscience, and disease. The whole family Drosophilidae, which contains over 4,400 species, offers a plethora of cases for comparative and evolutionary studies. Despite a long history of phylogenetic inference, many relationships remain unresolved among the genera, subgenera, and species groups in the Drosophilidae. To clarify these relationships, we first developed a set of new genomic markers and assembled a multilocus data set of 17 genes from 704 species of Drosophilidae. We then inferred a species tree with highly supported groups for this family. Additionally, we were able to determine the phylogenetic position of some previously unplaced species. These results establish a new framework for investigating the evolution of traits in fruit flies, as well as valuable resources for systematics