Oocyte freezing: here to stay?

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...

Covert Channels - Here to Stay ?

We discuss the dificulties of satisfying high-assurance system requirements without sacrificing system capabilities. To alleviate this problem, we show how trade-offs can be made to reduce the threat of coved channels. We also clarify certain concepts in the theory of covert channels. Traditionally, a coved channel’s vulnerability was measured b y the capacity. We show why a capacity analysis a...

hpv is here to stay.

Lymphogranuloma venereum: here to stay?

In 2003, this journal published a report from The Netherlands of an unusual presentation of lymphogranuloma venereum (LGV) in a man with HIV infection. That article was the first evidence of a significant re-emergence of the disease in gay men. Over the following 5 years, articles in this journal and others have documented cases and clusters of LGV from many countries in Europe and North Americ...

Thirdhand smoke: here to stay.

The first time I had any inkling that nicotine might linger in a room was when I listened to a group of nicotine chemists complaining about how hard it is to keep nicotine out of their laboratories. Their gas chromatography and mass spectroscopy machines are expensive, complex and very sensitive. In order to detect nicotine and cotinine in samples from non-smokers exposed to secondhand smoke, t...