Biomolecular signal tracker with fast time response.

Design and Implementation of a Biomolecular Concentration Tracker

As a field, synthetic biology strives to engineer increasingly complex artificial systems in living cells. Active feedback in closed loop systems offers a dynamic and adaptive way to ensure constant relative activity independent of intrinsic and extrinsic noise. In this work, we use synthetic protein scaffolds as a modular and tunable mechanism for concentration tracking through negative feedba...

A Simple Fast Edge-Based Visual Tracker

This paper describes a simple visual tracking program. The program has its genesis partly in the idea that it is often preferable to do many simple actions quickly rather than to attempt to do more sophisticated things that take longer. This idea is particularly attractive in the area of visual tracking, where the ow of input data may be at a rate of 10 or 20 Mbytes per second. The tracker desc...

A Fast and Reliable Token Tracker

A real-time face tracker

We present a real-time face tracker in this paper The system has achieved a rate of 30% frameshecond using an HP-9000 workstation with a framegrabber and a Canon VC-CI camera. It can track a person 'sface while the person moves freely (e.g., walks, jumps, sits down and stands up) in a room. Three types of models have been employed in developing the system. First, we present a stochastic model t...

Nonequilibrium phase transitions in biomolecular signal transduction.

We study a mechanism for reliable switching in biomolecular signal-transduction cascades. Steady bistable states are created by system-size cooperative effects in populations of proteins, in spite of the fact that the phosphorylation-state transitions of any molecule, by means of which the switch is implemented, are highly stochastic. The emergence of switching is a nonequilibrium phase transit...