Staying safe during the eclipse

Fail-safe concurrency in the EcliPSe system

Local or wide-area heterogeneous workstation clusters are relatively cheap and highly effective, though inherently unstable operating environments for long-running distributed computations. We found this to be the case in early experiments with a prototype of the EcliPSe system, a software toolkit for replicative applications on heterogeneous workstation clusters. Hardware or network failures i...

Variations in the sky brightness during a lunar eclipse

A total lunar eclipse is conjectured to have influence on the physical conditions of an environmental area, particularly on the brightness of the sky. The phenomenon might also be relevant on weather parameters change on Earth, such as temperature, humidity and pressure, though a straightforward correlation is not easy to establish. This work mainly aims at measuring the brightness of the sky a...

Staying the Course: U.S. Employment Strategy during the Great Recession

Modelling of spacecraft spin period during eclipse

The majority of scientific satellites investigating the Earth magnetosphere are spin stabilized. The attitude information comes usually from a sun sensor and is missing in the umbra; hence, the accurate experimental determination of vector quantities is not possible during eclipses. The spin period of the spacecraft is generally not constant during these times because the moment of inertia chan...

Attenuation of irradiance during solar eclipse

Attenuation of global ultraviolet and visible irradiance over Greece during the total solar eclipse of 29 March 2006 A. Kazantzidis, A. F. Bais, C. Emde, S. Kazadzis, and C. S. Zerefos Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece Institut für Physik der Atmosphäre, Deutsches Zentrum für Luftund Raumfahrt (DLR), Oberpfaffenhofen, 82234 Wessling, G...