Jonathan I. Charney (1943-2002)

Extrasolar Planets Jonathan I

NOTES: (a) JWST numbers appropriate to the assumptions in their updated Science Requirements Document must be calculated; (b) the GSMT sensitivity calculations must be ‘scrubbed’ to ensure that the assumptions re detectors; atmosphere; emissivity are duly conservative; and (c) the expected. performance of the JWST NIR coronagraph needs to be folded in. Please review with these caveats in mind (...

Cervical cancer incidence in Denmark over six decades (1943-2002).

INTRODUCTION The purpose of the study was to describe developments in the incidence of invasive cervical cancer in Denmark, focusing on histological types, over a period of 60 years. We also describe developments in the incidence of carcinoma in situ and mortality. MATERIAL AND METHODS The study is based on the Danish Cancer Registry database of 39,623 reported cases of invasive cervical canc...

In memoriam: Alexander I. Klimov (1943-2013).

Alexander (Sasha) I. Klimov, PhD, ScD (1943–2013)

On Tuesday February 5, 2013, Alexander (Sasha) Klimov passed away after a valiant battle with cancer. Sasha was an internationally renowned influenza scientist and Deputy Director of the World Health Organization (WHO) Collaborating Center on Surveillance, Epidemiology and Control of Influenza at the U.S. Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia. In his position as C...

Even- vs. Odd-dimensional Charney-Davis Conjecture

More than once we have heard that the Charney-Davis Conjecture makes sense only for odd-dimensional spheres. This is to point out that in fact it is also a statement about even-dimensional spheres. A conjecture of Heinz Hopf asserts that the sign of the Euler characteristic of a smooth Riemannian 2d-dimensional manifold of non-positive sectional curvature is the same for all such manifolds, tha...