Abstract The notion of nonreciprocity, in essence when going forwards is different from backwards, emerges all branches physics cosmology to electromagnetism. Intriguingly, the breakdown reciprocity typically associated with extraordinary phenomena, which may be readily capitalized on design (for example) nontrivial electromagnetic devices Lorentz broken. However, order enable exploitation nonr...

Cells of the fission yeast Schizosaccharomyces pombe switch mating type by replacing genetic information at the transcriptionally active mat1 locus with sequences copied from one of two closely linked silent loci, mat2-P or mat3-M. By a process referred to as directionality of switching, cells predominantly switch to the opposite mat1 allele; the mat1-P allele preferentially recombines with mat...

Many ecological community dynamics display some degree of directionality, known as succession patterns. But complex interaction networks frequently tend to non-directional such chaos, unless additional structures or mechanisms impose form of, often fragile shot-lived, directionality. We exhibit here a novel property emergent long-lasting directionality in competitive communities, which relies o...

We consider the problem of experimental detection of directionality of weak coupling between two self-sustained oscillators from bivariate data. We further develop the method introduced by Rosenblum and Pikovsky [Phys. Rev. E 64, 045202 (2001)], suggesting an alternative approach. Next, we consider another framework for identification of directionality, based on the idea of mutual predictabilit...

There are two optical processes that control the retinal image sampled by the photoreceptor array: aberrations of the ocular optics and cone directionality (Stiles-Crawford effect). The shape of wavefront aberration and Stiles-Crawford functions are known to vary markedly across subjects. In this study we investigate in twelve subjects the symmetry between right and left eyes of wavefront aberr...