788 citations · 1.5k across the 7 of their papers we have counts for
7 papers
Discovering a sparse set of pairwise discriminating features in high dimensional data
Samuel Melton, Sharad Ramanathan
Extracting an understanding of the underlying system from high dimensional data is a growing problem in science. Discovering informative and meaningful features is crucial for clus…
Genetic drift at expanding frontiers promotes gene segregation
Oskar Hallatschek, Pascal Hersen, Sharad Ramanathan +1
Competition between random genetic drift and natural selection plays a central role in evolution: Whereas non-beneficial mutations often prevail in small populations by chance, mut…
Dynamics of elastic boundaries
Sharad Ramanathan, Alexander Lobkovsky
We study, both analytically and numerically, the dynamics of elastic boundaries such as crack fronts in fracture and surfaces of contact in solid on solid friction. The elastic wav…
Onset of Propagation of Planar Cracks in Heterogeneous Media
Sharad Ramanathan, Daniel S. Fisher
The dynamics of planar crack fronts in hetergeneous media near the critical load for onset of crack motion are investigated both analytically and by numerical simulations. Elastici…
Statistics of Earthquakes in Simple Models of Heterogeneous Faults
Daniel S. Fisher, Karin Dahmen, Sharad Ramanathan +1
Simple models for ruptures along a heterogeneous earthquake fault zone are studied, focussing on the interplay between the roles of disorder and dynamical effects. A class of model…
Dynamics and Instabilities of Planar Tensile Cracks in Heterogeneous Media
Sharad Ramanathan, Daniel S. Fisher
The dynamics of tensile crack fronts restricted to advance in a plane are studied. In an ideal linear elastic medium, a propagating mode along the crack front with a velocity sligh…