Bullseye beaming

Brightness assimilation in bullseye displays

In simultaneous brightness contrast displays, a gray target square G(B) bordered by black appears brighter than an identical gray target square G(W) bordered by white. Here we demonstrate that this effect can be reversed if G(B) is surrounded by bands that alternate outward from black to white, while G(W) is surrounded by bands that alternate outward from white to black. With these simple "bull...

K-space polarimetry of bullseye plasmon antennas

Surface plasmon resonators can drastically redistribute incident light over different output wave vectors and polarizations. This can lead for instance to sub-diffraction sized nanoapertures in metal films that beam and to nanoparticle antennas that enable efficient conversion of photons between spatial modes, or helicity channels. We present a polarimetric Fourier microscope as a new experimen...

Bullseye: A System for Targeted Test Generation

This paper describes the architecture and implementation of the Bullseye automatic test generation system. Bullseye differs from existing systems in that it is targeted: by using program analysis, it is able to guide testing to areas that influence or are influenced by areas deemed to be ‘interesting’: that is, locations that are more important to test. By not treating all paths equally and ins...

Target practice: Zic2 hits the bullseye!

A major challenge in biology is to unravel how the billions of neurons of the nervous system make appropriate functional connections. This is known to be a multistep developmental process that includes guiding, targeting and refinement of axons. In this issue of The EMBO Journal, Garcı́a-Frigola and Herrera show compelling evidence that, within the visual system, the same transcription factor (Z...

GP Budget Holding: Scoring a Bullseye or Missing the Target?