Manitoba Great Gray Owl Research Project Announced

The Nesting of the Great Horned Owl

ON March 19, 1926, the nest of a Great Horned Owl (Bubo virginianus pallescens?) was found in one of the thickly wooded canyons on the military reservation, Fort Riley, Kansas, which presented an unusual opportunity for intimate study of the nest life and growth of the young from very early in their life history until the leaving of the nest. The terrain consists of rolling grass-covered hills ...

Pellet Formation in a Great Horned Owl: a Roentgenographic Study

IN the literature on owls, there has been much interest in the formation in the upper gastro-intestinal tract of pellets which contain indigestible material and which are subsequently regurgitated. This feature of gastrointestinal function has interested bird physiologists, and analysis of the pellets has been used to monitor feeding habits (Errington et al., 1940). Although pellet formation is...

Annual IT Awards Announced

This paper is based on the Shannon Lecture presented in August 2011, at ISIT2011, Saint Petersburg, Russia, and it presents a subjective overview of selected topics in Information Theory, Communications and Signal Processing taking an InformationEstimation perspective. We first review basic Information-Minimum Mean Square Error (IMMSE) relations and properties in Gaussian additive channels, and...

How turning a QI project into "research" almost sank a great program.

Research at Great Ormond Street

There have recently been opened, at the Hospital for Sick Children in Great Ormond Street, a new pathological and a new biochemical laboratory. In the Pathological Laboratory investigations are being made into the causes of summer diarrhoea and rickets in children. In addition, experiments are being made as to the value of the complement fixation test in tuberculosis, and as to the precipitatio...