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...

Agnes Aruna John, Saravana Kumar Jaganathan*, A. Manikandan, K. Navanetha Pandiaraj, R. Rajasekar and Eko Supriyanto Faculty of Biosciences and Medical Engineering, IJN-UTM Cardiovascular Engineering Centre (Skudai), Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia Department for Management of Science and Technology Development, Faculty of Applied Sciences, Ton Duc Thang University, H...

We study a system containing many particles of identical kinematics with a zero range interaction that scatters one from the other, and with the possible exchange of an attribute. Taking an initial condition in which the attribute is asymmetrically distributed in the regions of momentum space occupied by the particles, we study the rate at which it becomes uniformly distributed, through collisi...

21st; '453 on the 22nd ; *346 on the 23rd ; *062 on the 24th ; ?604 on the 25th ; '015 on the 26th ; '135 on the 27tli; -105 on the 28th; '468 on the 29th ; '028 on the 30th j l-559 oa the 31st. Total 12-502 inches. YI.? Wind: 1. Direction, S.E. and S.W. 2. Yelocity and pressure. Max. Min. Med. Horizontal velocity in 24 hours 1093'2 miles 156-6 514*7 Average rate per hour ... 45'5 7 0 21-4 Pres...