A Bird's Eye View of f (R)-Gravity

A Bird's Eye View of f (R)-Gravity

The currently observed accelerated expansion of the Universe suggests that cosmic flow dynamics is dominated by some unknown form of dark energy characterized by a large negative pressure. This picture comes out when such a new ingredient, beside baryonic and dark matter, is considered as a source in the r.h.s. of the field equations. Essentially, it should be some form of un-clustered, non-zer...

Birds' eye view: a decade of perspectives.

O of Jan Drake’s happy innovations as editor of other significant events (i.e., the first issue of Genetics in 1916). These have fulfilled the retrospective function. Genetics was to initiate the publication of an essay, entitled Perspectives, at the beginning of each issue. The perspective and prospective functions have been achieved by articles that have integrated classic studies His idea wa...

f(R) theories of gravity

Modified gravity theories have received increased attention lately due to combined motivation coming from high-energy physics, cosmology and astrophysics. Among numerous alternatives to Einstein’s theory of gravity, theories which include higher order curvature invariants, and specifically the particular class of f(R) theories, have a long history. In the last five years there has been a new st...

A Birds Eye View on System Identification

System identification is concerned with obtaining good models from data, i.e. with data driven modeling. In this contribution the aim is to explain and discuss ideas, general approaches and theories underlying identification of linear systems. Identification of linear systems is a nonlinear problem and is prototypical also for many parts of identification of nonlinear systems.

The Birds-eye View: Neuropsychology of Adhd