Sökresultat

Filtyp

Din sökning på "*" gav 533069 sökträffar

Propagation of transient electromagnetic waves in time-varying media - Direct and inverse scattering problems

Wave propagation of transient electromagnetic waves in time-varying media is considered. The medium, which is assumed to be inhomogeneous and dispersive, lacks invariance under time translations. The spatial variation of the medium is assumed to be in the depth coordinate, i.e., it is stratified. The constitutive relations of the medium is a time integral of a generalized susceptibility kernel and

De vuxna är en av de viktigaste förklaringarna till kränkningarna

Tyckare och experter förfäras över det hemska nätet och de ohyfsade ungdomarna. Men det kommer någonstans ifrån. Barn gör inte som vuxna säger, de gör som vuxna gör. Det skriver Marcin de Kaminski, nätforskare och doktorand i rättssociologi, och Katia Wagner, frilansjournalist och föreläsare kring ungas vardag på internet.

HMS: A Predictive Text Entry Method using Bigrams

Due to the emergence of SMS messages, the significance of effective text entry on limited-size keyboards has increased. In this paper, we describe and discuss a new method to enter text more efficiently using a mobile telephone keyboard. This method, which we called HMS, predicts words from a sequence of keystrokes using a dictionary and a function combining bigram frequencies and word length. We

Elemental Abundance Variation with Particle Size in Aerosols from Welding Operations

The effect of airborne particulate matter on human health is today of considerable research interest. Essential parameters include elemental composition sampling with low pressure cascade impactors and analysis by particle induced x-ray emission spectroscopy (PIXE). It is shown that the aerosol generated by arc welding operations is several orders of magnitude denser than aerosols in ambient air.

The effect of emotional valance on recollective experience and confidence judgments

The study investigated the effect of positive and negative emotional valence (I.A.P.S pictures) on recollective experience, using the remember-know paradigm (Tulving, 1985), and confidence judgements. The negative valenced pictures were hypothesised elicit the recollective experience to a larger extent and to entail a higher degree of confidence in the correctness of memory responses than positive

How Could the Nuclear Deal Change Iran?

Reduction of external threats to survival and mitigation of threat perceptions can persuade the state apparatus to gradually desecuritize the internal sphere and allow for a more inclusive and democratic politics to emerge, not least if such an opening promises to consolidate its interests in the long run. The logic applies to all rational actors in the international system that are driven by will