The dark-speckle method (Labeyrie 1995) combines features of speckle interferometry and adaptive optics to provide images of faint circumstellar material. We present preliminary results of observations, and simulations concluding to the feasibility of exo-planet imaging from the ground. Laboratory simulations with an avalanche photodiode indicate the detectability of a stellar companion of rela...

The detection of recombination from DNA sequences is relevant to the understanding of evolutionary and molecular genetics. We developed a Recombination Simulation Scientific Workflow System (RSSWS) for simulating recombination and using GENECONV to test the effect of pairwise differences in a diverse population on the detectability of recombination. Decreases in recombination rate owing to pair...

We reexamine the possibility of the detection of the cosmic topology in nearly flat hyperbolic Friedmann-Lemâıtre-Robertson-Walker (FLRW) universes by using patterns repetition. We update and extend our recent results in two important ways: by employing recent observational constraints on the cosmological density parameters as well as the recent mathematical results concerning small hyperbolic ...

Our goal is to optimize regularized image reconstruction for emission tomography with respect to lesion detectability in the reconstructed images. We consider model observers whose decision variable is the maximum value of a local test statistic within a search area. Previous approaches have used simulations to evaluate the performance of such observers. We propose an alternative approach, wher...