Schopper to stay

To stay or not to stay? That is the question.

Covert Channels | Here to Stay? Covert Channels | Here to Stay?

We discuss the di culties of satisfying high-assurance system requirements without sacri cing system capabilities. To alleviate this problem, we show how trade-o s can be made to reduce the threat of covert channels. We also clarify certain concepts in the theory of covert channels. Traditionally, a covert channel's vulnerability was measured by the capacity. We show why a capacity analysis alo...

How to Stay Married

How to stay married by J illy Cooper Methuen, 12s. 6d. With a new divorce Act on the statute book and the inevitable actual increase in recorded divorces that will follow such legislation, Marital stability will remain in the

Stay dynamic to slow aging

n page 803, Gourlay et al. report the first evidence that the actin cytoskeleton can affect release of reactive oxygen species (ROS) by mitochondria, and thus life span in yeast. Certain mutant Saccharo-myces cerevisiae strains with alleles that reduce actin dynamics possess defective mitochondria. The team O Cells with increased actin dynamics live longer. went on to show that such strains dis...

Lymphocytes shrink to stay fit

In response to an infection, proinfl ammatory cytokines stimulate lymphocytes to take up nutrients so that they can proliferate and mount an immune response. Once the infection is cleared, however, cytokine levels decline and the lymphocytes’ nutrient supply is abruptly cut off. Most of the cells quickly die by apoptosis, but a small fraction survive and differentiate into longlived memory cell...