532,305 research outputs found
Use of correlation to assess the signal content of patterns of spike activity reflecting the population response of relays of the central auditorimotor system of cats
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Extension of Nakagawa & Schielzeth's R2GLMM to random slopes models
1.Nakagawa & Schielzeth extended the widely used goodness-of-fit statistic R2 to apply to generalized linear mixed models (GLMMs). However, their R2GLMM method is restricted to models with the simplest random effects structure, known as random intercepts models. It is not applicable to another common random effects structure, random slopes models.<p></p>
2.I show that R2GLMM can be extended to random slopes models using a simple formula that is straightforward to implement in statistical software. This extension substantially widens the potential application of R2GLMM.<p></p>
Look Before You Leap: A Skeptical View of Proposals to Meld Macro- and Microprudential Regulation
G-20 ministers should avoid creating a new layer of regulation to counter future systemic financial risks, according to a newly released C.D Howe Institute study. The Commentary by Nick Le Pan, former Superintendent of Financial Institutions, cautions against current G-20 proposals to expand regulation to include system-wide macroeconomic risks.financial services, Bank of Canada, OSFI, systemic risk, procyclicality, Basel II
A geomorphological overview of glacial landforms on the Icelandic continental shelf
The availability of a bathymetric database that covers about 80% of the Icelandic shelf has made it possible to produce a geomorphological map of the glacial landforms. The digital elevation model of the bathymetry was analyzed as a series of shaded relief images. Trough edges, bulging trough mouths, moraines, eskers, melt water channels, streamlined bedrock and streamlined drift, mostly hitherto unmapped, distributed all around the island have been identified. Moraines are found on the shelf, within troughs and inside fjords. Streamlined landforms are always confined to the bottom of troughs. Troughs appear to have been cut by ice streams draining an ice sheet that likely covered the entire shelf. At the shelf break, most troughs terminate with contours that bulge in a convex-outwards fashion. This suggests that an ice stream eroded, transported and finally deposited large amounts of sediment at the trough mouth. Overall, the glacial morphology of the shelf highlights a radial pattern that indicates a main ice divide near the centre of Iceland
Grain growth in ultrafine-grained Y-TZP ceramics
Grain growth in dense ultrafine-grained (120–600 nm) tetragonal ZrO2-Y2O3 ceramics is studied as a function of temperature. At all temperatures investigated both segregation and phase partitioning occur. It is argued that at temperatures ≤ 1150 °C grain growth is not significantly inhibited by solid solution drag or by phase partitioning. At higher temperatures the grain growth behaviour can be explained by the models of solid solution drag and/or phase partitioning depending on conditions.\u
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