Boundary dynamics in competing critical black hole formation

Expanding upon our previous study of competing critical phenomena in black hole formation, we numerically investigate the behavior of dominant exponents across the boundary separating asymptotically dispersing and collapsing regions in a two-dimensional configuration space of initial data. We find that across the Type II boundary section the dominant exponent remains constant, equal to the reciprocal of Choptuik's well-known quasi-universal value, whereas across the Type I section the exponent noticeably varies. We postulate that this change reflects the existence of a third critical solution in addition to the two primary competing solutions, possibly another member of the family of metastable soliton stars constituting the Type I attractor.Comment: 18 pages, 20 figures, 2 table

Relationship between Extensions and Intensions in Categorization: A Match Made in Heaven?

The present study investigated the relationship between category extension and intension for eleven different semantic categories. It is often tacitly assumed that there is a (strong) extension-intension link. However, a recent study by Hampton and Passanisi (2016) examining the patterns of stable individual differences in concepts across participants called this hypothesis into question. To conceptually replicate their findings, two studies were conducted. We employed a category judgment task to measure category extensions, whereas a property generation (in Study 1) and property judgment task (Study 2) were used to measure intensions. Using their method, that is, correlating extension and intension similarity matrices, we found non-significant correlations in both studies, supporting their conclusion that similarity between individuals for extensional judgments does not map onto similarity between individuals for intensional judgments. However, multi-level logistic regression analyses showed that the properties a person generated (Study 1) or endorsed (Study 2) better predicted her own category judgments compared to other people’s category judgments. This result provides evidence in favor of a link between extension and intension at the subject level. The conflicting findings, resulting from two different approaches, and their theoretical repercussions are discussed.status: accepte

The Ursinus Weekly, May 12, 1952

WSGA to install officers at banquet on Thursday • Sororities hold dances, elections • Ruby selects photographer • College physician, famous coach, dies • WAA gives banquet • Bus. Ad. club takes poll • Queen and court reign at May Day pageant • Commencement, Baccalaureate speakers announced • Rosicrucians to entertain new members • Curtain Club, Alpha Psi elect new presidents • Four fraternities pick new officers • Voegler to speak at Pottstown • Campus groups hold annual elections: IRC, FTA, French Club • Queen to be on TV • Editorials: Good idea; Class struggle; Capitalistic noise and smoke • Class of 1952 is invited to Alumni Association dinner • Phila. Story is grand success • Alumni group plans banquet • Pinned • Ursinus routs Pharmacy with twenty run splurge • Snell\u27s Belles win in opener • Feist hurls five hitter, Bears rout Drexel, 9-4 • Physics Department develops film loops for better teaching • Famous columnist and editor speaks to FTA • Plans of \u2752 graduates reveal varied interests • Elizabethtown wins with eight run inning, 10 to 3 • Belles trounce West Chester • Men\u27s tennis squad victor • JV softball team whips Drexel 8-3 • Ursinus cinder men lose close meet to Albright • Ursinus finishes second in track • Y plans hot dog roast for May 14 • Marine representative speaks • Engagement • Marriagehttps://digitalcommons.ursinus.edu/weekly/1544/thumbnail.jp

Influenza nucleoprotein delivered with aluminium salts protects mice from an influenza virus that expresses an altered nucleoprotein sequence

Influenza virus poses a difficult challenge for protective immunity. This virus is adept at altering its surface proteins, the proteins that are the targets of neutralizing antibody. Consequently, each year a new vaccine must be developed to combat the current recirculating strains. A universal influenza vaccine that primes specific memory cells that recognise conserved parts of the virus could prove to be effective against both annual influenza variants and newly emergent potentially pandemic strains. Such a vaccine will have to contain a safe and effective adjuvant that can be used in individuals of all ages. We examine protection from viral challenge in mice vaccinated with the nucleoprotein from the PR8 strain of influenza A, a protein that is highly conserved across viral subtypes. Vaccination with nucleoprotein delivered with a universally used and safe adjuvant, composed of insoluble aluminium salts, provides protection against viruses that either express the same or an altered version of nucleoprotein. This protection correlated with the presence of nucleoprotein specific CD8 T cells in the lungs of infected animals at early time points after infection. In contrast, immunization with NP delivered with alum and the detoxified LPS adjuvant, monophosphoryl lipid A, provided some protection to the homologous viral strain but no protection against infection by influenza expressing a variant nucleoprotein. Together, these data point towards a vaccine solution for all influenza A subtypes

Cosmic Rays: The Second Knee and Beyond

We conduct a review of experimental results on Ultra-High Energy Cosmic Rays (UHECR's) including measurements of the features of the spectrum, the composition of the primary particle flux and the search for anisotropy in event arrival direction. We find that while there is a general consensus on the features in the spectrum -- the Second Knee, the Ankle, and (to a lesser extent) the GZK Cutoff -- there is little consensus on the composition of the primaries that accompany these features. This lack of consensus on the composition makes interpretation of the agreed upon features problematic. There is also little direct evidence about potential sources of UHECRs, as early reports of arrival direction anisotropies have not been confirmed in independent measurements.Comment: 46 pages, 30 figures. Topical Review to appear in J. Physics