On November 23, 2021, Mr. Greg Fyffe presented Canadian Intelligence for the Dangerous Decades at 2021 CASIS West Coast Security Conference. The presentation was followed by a question and answer period with questions from audience Vancouver executives. key points of discussion included an overview Fyffe’s most recent report on structure intelligence system improvement both as well national sec...

The fish subfamily Poeciliinae (sensu Parenti, 1981) is widely distributed across the Western Hemisphere and a dominant component of the fish communities of Central America. Poeciliids have figured prominently in previous studies on the roles of dispersal and vicariance in shaping current geographic distributions. Most recently, Hrbek et al. combined a DNA-based phylogeny of the family with geo...

We consider the spectral properties of a class of regularized estimators of (large) empirical covariance matrices corresponding to stationary (but not necessarily Gaussian) sequences, obtained by banding. We prove a law of large numbers (similar to that proved in the Gaussian case by Bickel and Levina), which implies that the spectrum of a banded empirical covariance matrix is an efficient esti...

This note recasts the proof of Gaboriau-Popa in a way which does not use property (T). 1 Preface and clarification In [1], after a number of partial results by various authors, Damien Gaboriau and Sorin Popa showed that non-abelian countable free groups have uncountably many measure preserving, ergodic, actions on standard Borel probability spaces up to orbit equivalence. The original proof use...