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Estimation of Revenue Loss due to Disturbances on Utilities in the Process Industry

Disturbances on utilities, such as steam and cooling water, often cause large economic losses at industrial sites. Utilities are often shared between production areas, and a disturbance on a utility is therefore likely to affect a large part of the production site. In addition, production areas are often coupled by the product at the site. Obtaining a dynamic model of a site, with respect to utili

On the single-particle spectrum of an interacting electron gas

n the many-body theory of conduction electrons in a metal the single-particle spectrum is described not simply by the energy versus momentum relation as in band theory but by a function that describes the actual shape of the spectrum for a given momentum and has an appreciable spread in energy. Calculations of the spectral strength function for electrons in a uniform electron gas are described, wh

Another attack on A5/1

A5/1 is a stream cipher used in the GSM system. Several time-memory trade-off attacks against A5/1 have been proposed previously. This paper presents a completely different attack, based on ideas from correlation attacks.