Interstellar Filaments and the Statistics of Galactic HI

This paper presents a statistical explanation of filament formation in the galactic atomic hydrogen. Recently developed technique allows to determine the 3D spectrum of random HI density. We claim that even in the absence of dynamical factors the Gaussian field corresponding to the measured values of the spectrum of HI density should exhibit filamentary structure, the existence of which has long been claimed.Comment: 14 pages, 5 figures (bitmapped). Original figures available from ftp://ftp.cita.utoronto.ca/ftp/cita/pogosyan/cita-96-17 (1.1MB

If you play well they will come-and vice versa: bidirectional causality in major-league baseball

The Granger-causality test is applied to the annual attendance and win-percentage data for 29 major-league teams. It is shown that bidirectional causality exists for these teams and that there are some essential differences between the original 10 of 16 franchises that comprised the majors in 1903 and the six that relocated between 1953 and 1961. Some differences and some similarities are also seen in the parameter estimates for both blocs of teams, the relocated teams, and seven long-lived expansion franchises. Finally, the parameter estimates are manipulated to yield noise-free equilibrium estimates for both attendance and performance. In tandem, these two sets of estimates provide fodder for speculation as to the futures of each of the extant 23 franchises considered here. Copyright © 2007 John Wiley & Sons, Ltd.