Signal Amplification: Let's Turn Down The Lights

Signal Amplification: Let's Turn Down The Lights

G protein activation by membrane-bound receptors initiates a chain reaction that amplifies cellular responses to external signals. In retinal photoreceptors, amplification by the phototransduction cascade is regulated by quickly switching off the visual pigment that acts as the receptor for light.

G-Lets: A New Signal Processing Algorithm

Different signal processing transforms provide us with unique decomposition capabilities. Instead of using specific transformation for every type of signal, we propose in this paper a novel way of signal processing using a group of transformations within the limits of Group theory. For different types of signal different transformation combinations can be chosen. It is found that it is possible...

Please turn off the lights: the effectiveness of visual prompts.

Two early studies showed that visual prompts can be effectively used to encourage people to turn off the lights in unoccupied classrooms, but they were methodologically limited. The current study used an ABAB-B design with an 11-week follow-up to investigate whether two different visual prompts (large and small signs) could be employed to increase "lights off" behaviour in 17 unoccupied washroo...

G-Lets: Signal Processing Using Transformation Groups

We present an algorithm using transformation groups and their irreducible representations to generate an orthogonal basis for a signal in the vector space of the signal. It is shown that multiresolution analysis can be done with amplitudes using a transformation group. G-lets is thus not a single transform, but a group of linear transformations related by group theory. The algorithm also specif...

Stoma care: the market in products lets patients down.