A RAPIDLY ERECTED TEMPORARY STRUCTURE PROTECTING FROM POWERFUL EXPLOSIONS

Protecting against Vapor Explosions with Water Mist

This paper examines a number of practical questions about the possibility of using water mist to mitigate explosion hazards in some industrial applications. Water mist systems have been installed to replace Halon 1301 in gas compressor modules on Alaska’s North Slope oil fields. The hazard in the compressor modules includes fire in lubrication oil lines for the gas turbines that drive the compr...

A Rapidly Acquired Domain Model Derived from Markup Structure

Powerful and sophisticated stateof-the-art Web search engines have emerged in the last few years. But finding information on the Web can still cause a lot of headache. Part of the reason is the massive growth of available online data. But even in small domains a simple query can easily result in hundreds of matching documents being returned. This paper describes how document markup can be used ...

From Protecting a System to Protecting a Global Ecosystem

The area of security used to be classified by technologies: authentication, access control, monitoring, firewalls, cryptography, etc., or by systems: web security, application security, database security, operating systems security, communication security, etc. However, nowadays, in order to operate a service over the Internet, facing customers, one needs to manage a complex infrastructure. Thi...

Craters from Impacts and Explosions

Supernova Explosions: Lessons from Spectropolarimetry

Supernova can be polarized by an asymmetry in the explosion process, an off-center source of illumination, scattering in an envelope distorted by rotation or a binary companion, or scattering by the circumstellar dust. Careful polarimetry is the most powerful tool to study the 3-D geometry of supernovae. A deep understanding of the 3-D geometry of SNe is essential in using them as calibrated di...