Spatial gradients enhance persistence of hypercycles

Hypercycles: a Status Report

On spatial power gradients

The variation of the instantaneous power versus distance for a narrowband channel is an important parameter in modern digital systems, relevant for variations during a burst and for power control algorithms. This paper gives the statistical distribution for the power gradient, both in decibels and in natural units for a Rayleigh fading channel. The former has been known for some time to be Stud...

Enzymatic modifications of exopolysaccharides enhance bacterial persistence

Biofilms are surface-attached communities of bacterial cells embedded in a self-produced matrix that are found ubiquitously in nature. The biofilm matrix is composed of various extracellular polymeric substances, which confer advantages to the encapsulated bacteria by protecting them from eradication. The matrix composition varies between species and is dependent on the environmental niche that...

Bifurcations analysis of oscillating hypercycles.

We investigate the dynamics and transitions to extinction of hypercycles governed by periodic orbits. For a large enough number of hypercycle species (n>4) the existence of a stable periodic orbit has been previously described, showing an apparent coincidence of the vanishing of the periodic orbit with the value of the replication quality factor Q where two unstable (non-zero) equilibrium point...

Broadcasting in Hypercycles

Hypercycles is a class of multidimensional multiprocessor interconnection networks which includes hypercubes, toruses, rings and other related topologies. In this paper we consider the one-to-all communication problem for the general class of hypercycles. We present a nonredundant broadcasting algorithm which is completed in the minimum number of steps. The algorithm is given in distributed for...