2,839 research outputs found
Objective Climate Model Predictions Using Jeffreys' Prior: the General Multivariate Normal Case
Objective probabilistic forecasts of future climate that include parameter
uncertainty can be made by using the Bayesian prediction integral with the
prior set to Jeffreys' Prior. The calculations involved in determining the
prior can then be simplified by making parametric assumptions about the
distribution of the output from the climate model. The most obvious assumption
to make is that the climate model output is normally distributed, in which case
evaluating the prior becomes a question of evaluating gradients in the
parameters of the normal distribution. In previous work we have considered the
special cases of diagonal (but not constant) covariance matrix, and constant
(but not diagonal) covariance matrix. We now derive expressions for the general
multivariate normal distribution, with non-constant non-diagonal covariance
matrix. The algebraic manipulation required is more complex than for the
special cases, and involves some slightly esoteric matrix operations including
taking the expectation of a vector quadratic form and differentiating the
determinants, traces and inverses of matrices
Gastric Torsion
Gastric torsion, a rarely seen condition, is a 90-3600 twisting of the stomach upon itself, usually from left to right. It occurs most often in the large breeds of dogs such as the Great Dane, the St. Bernard and the Bloodhound. The common causes are the ingestion of large amounts of food or water, violent exercise or violent vomition. The typical clinical picture is the sudden onset of colic-like symptoms with a tense abdominal swelling just posterior to the rib cage. This abdominal swelling in turn will cause dyspnea, cyanosis and may develop into shock
Garden Cress in the Garden
This fact sheet describes garden cress in the garden, varieties, how to grow, problems, harvesting and storage, productivity, nutrition, and frequently asked questions
A Good Start: Two-Year Effects of a Freshmen Learning Community Program at Kingsborough Community College
Freshmen in a "learning community" at Kingsborough Community College in Brooklyn, NY, moved more quickly through developmental English requirements, took and passed more courses, and earned more credits in their first semester than students in a control group. Two years later, they were also somewhat more likely to be enrolled in college
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