Interfacing Sail Modules for Use with “Space Tugs”

Economic case for the retirement of geosynchronous communication satellites via space tugs

Both the United Nations (UN) and the US Federal Communications Commission (FCC) have published a ruling that calls for geostationary earth orbit (GEO) satellites to be placed in a disposal orbit at the end of their operational lives. Current procedures utilize spacecraft residual propellant and represent a major life-limiting factor for GEO satellites. An alternative approach would be to allow ...

SJOGREN AND MYERS : INTERFACING SYNCHRONOUS AND ASYNCHRONOUS MODULES 3 Controller

Interfacing Synchronous and Asynchronous Modules Within a High-Speed Pipeline

This paper describes a new technique for integrating asynchronous modules within a high-speed synchronous pipeline. Our design eliminates potential metastability problems by using a clock generated by a stoppable ring oscillator, which is capable of driving the large clock load found in present day microprocessors. Using the ATACS design tool, we designed highly optimized transistor-level circu...

Modules over a Ringed Space

In these notes we collect some useful facts about sheaves of modules on a ringed space that are either left as exercises in [Har77] or omitted completely. Most of these observations can be found in [Gro60], which is of course always the best reference. Nonetheless it may be useful for the reader to have an english reference when these points arise in our other notes on algebraic geometry. These...

The use of brain-computer interfacing for ambient intelligence

This paper is aimed to introduce IDIAP Brain Computer Interface (IBCI) research that successfully applied Ambience Intelligence (AmI) principles in designing intelligent brain-machine interactions. We proceed through IBCI applications describing how machines can decode and react to the human mental commands, cognitive and emotive states. We show how effective human-machine interaction for brain...