Topical Group in Gravitation ( GGR ) Authorities

Report from the APS Topical Group in Gravitation

The newsletter of the Topical Group on Gravitation of the American Physical Society

Report on the APS Topical Group in Gravitation

Research briefs: Gravitational Microlensing and the Search for Dark Matter: A Personal View, Bohdan Paczynski . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Laboratory Gravity: The G Mystery and Intrinsic Spin Experiments, Riley Newman . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 LIGO Project update, Stan Whitcomb . . . . . . . . . . . ...

Nanobiosensor design utilizing a periplasmic E. coli receptor protein immobilized within Au/polycarbonate nanopores.

A new type of nanopore sensor design is reported for a reagent-less electrochemical biosensor with no analyte "tagging" by fluorescent molecules, nanoparticles, or other species. This sensor design involves immobilization within Au-coated nanopores of bacterial periplasmic binding proteins (bPBP), which undergo a wide-amplitude, hinge-twist motion upon ligand binding. Ligand binding thus trigge...

Efficient Realization of Givens Rotation through Algorithm-Architecture Co-design for Acceleration of QR Factorization

We present efficient realization of Generalized Givens Rotation (GGR) based QR factorization that achieves 3-100x better performance in terms of Gflops/watt over state-of-the-art realizations on multicore, and General Purpose Graphics Processing Units (GPGPUs). GGR is an improvement over classical Givens Rotation (GR) operation that can annihilate multiple elements of rows and columns of an inp...