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Charitable organizations often use directed charity appeals to solicit donations from potential donors. However, charity appeals can be written either in a positive frame (where the aim is to induce a positive mood), or in a negative frame (where the aim is to induce guilt and general negative emotions). Both positive and negative affect have been linked to an increased motivation to help and whil
Artikeln är en debattartikel på Svenska Dagbladets Brännpunkt. Medborgarnas acceptans för säkerhetsrelaterad övervakning är begränsad. Exempelvis tycker 55 procent av svenskarna inte att det är acceptabelt att FRA samlar in och bearbetar data om internetvanor, skriver forskare från DigiTrust-projektet vid Lunds universitets Pufendorfinstitut.
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A decomposition of the field of the wave equation in three dimensions is suggested. This wave splitting decomposes the field into two components such that in free space simple propagation properties are obtained. The inhomogeneous region is assumed to have a phase velocity variation that varies only in the radial coordinate r from the origin. The suggested wave splitting is a generalization of the
This paper reminds the analog designer of the possible stability problems encountered when simulating strongly resonating circuits in the time domain. The warping of circuit pole positions in different numerical integration algorithms is reviewed, and it is shown that all time domain simulation algorithms suffer from this effect, including Simulink, time-domain steady-state, and a harmonic balance
