Avian song learning is an important model system for understanding vocal learning in humans and other animals. Laboratory studies indicate that social interactions are critical for song learning, but field observations show that territorial males are aggressive to intruders, raising the question of whether young birds are tolerated, much less tutored in the wild. We examined how adult song spar...

The atmospheric Ar/N2 ratio is expected to be useful as a tracer of air-sea heat exchange, but this application has been hindered in part due to sampling artifacts. Here we show that the variability in δ(Ar/N2) due to thermal fractionation at the inlet can be on the order of 40–80 per meg, and we introduce the use of an aspirated solar shield that successfully minimizes such fractionation. The ...

Editor's Note: It seems appropriate, in this issue of JSS containing the ®ndings of our annual Top Scholars/Institutions study, to pay tribute to the persistent authors who make a journal like this, and a study like that, possible. In their honor, we dedicate the following humorous, anonymously-authored, letter! Dear Sir, Madame, or Other: Enclosed is our latest version of Ms. #1996-02-22-RRRRR...

Technology studies and the user-oriented ‘wing’ of computer science have largely shared a ‘heroic’, albeit critical, vision of computer system design: that designers inscribe particular views of the user, user activities and priorities into the artefact, but these are often ‘the wrong values’, based on an inadequate or misleading view of the user and their requirements. Ethnographic studies of ...

The salmon louse Lepeophtheirus salmonis is a major disease problem in salmonids farming and there are indications that it also plays role the decline of wild stocks. This study shows first ultrastructural images pathological changes sensory setae antenna inner tissues different stages L. development after sound exposure laboratory sea conditions. Given current ineffectiveness traditional metho...