Roll over Beethoven

Comparative roll-over analysis of prosthetic feet.

A prosthetic foot is a key element of a prosthetic leg, literally forming the basis for a stable and efficient amputee gait. We determined the roll-over characteristics of a broad range of prosthetic feet and examined the effect of a variety of shoes on these characteristics. The body weight of a person acting on a prosthetic foot during roll-over was emulated by means of an inverted pendulum-l...

Phagocytosis: Rac and roll over the corpses

Programmed cell death or apoptosis plays a fundamental role during animal development and metamorphosis, and in tissue homeostasis in the adult. This process comprises two distinct and sequential steps: the death of cells and their subsequent removal by phagocytosis. Removing excess cells before lysis allows cell numbers to be regulated without the release of potentially toxic intracellular con...

RFC 4771 Roll - Over Counter Carrying Transform

This document defines an integrity transform for Secure Real-time Transport Protocol (SRTP; see RFC 3711), which allows the roll-over counter (ROC) to be transmitted in SRTP packets as part of the authentication tag. The need for sending the ROC in SRTP packets arises in situations where the receiver joins an ongoing SRTP session and needs to quickly and robustly synchronize. The mechanism also...

Black Holes, Bandwidths and Beethoven

It is usually believed that a function φ(t) whose Fourier spectrum is bounded can vary at most as fast as its highest frequency component ωmax. This is in fact not the case, as Aharonov, Berry and others drastically demonstrated with explicit counter examples, so-called superoscillations. It has been claimed that even the recording of an entire Beethoven symphony can occur as part of a signal w...

"Beethoven on Beethoven: Playing His Piano His Way." By William S. Newman