Population changes for waterways birds, 1974–78

Secretive Birds: Privacy in Population Protocols

We study private computations in a system of tiny mobile agents. We consider the mobile population protocol model of Angluin et al. [2] and ask what can be computed without ever revealing any input to a curious adversary. We show that any computable predicate of the original population model can be made private through an obfuscation procedure that exploits the inherent non-determinism of the m...

Territorial Behavior and Population Regulation in Birds

A close relationship between territorial behavior and population regulation in birds was claimed by Howard (1920) in his classic essay on territoriality and has been emphasized by both earlier and more recent authors (see Wynne-Edwards, 1962). At present, opinions on this matter vary considerably; but there seems to be widespread entertainment, and in some circles acceptance, of the idea that t...

WATER TREATMENT: Sweeteners Persist in Waterways

A 438 volume 117 | number 10 | October 2009 • Environmental Health Perspectives Vehicles Concentrate Nicotine A study by Patrick Breysse et al. published online 25 August 2009 ahead of print in Tobacco Control found that vehicle passengers riding with smokers may be exposed to nicotine levels 40–50% higher than those found in restaurants and bars that permit smoking. Nicotine concentrations ins...

Nutrient Pollution: A Persistent Threat to Waterways

NaSS: system simulation of inland waterways

Proceedings of the International Conference on Harbor, Maritime and Multimodal Logistics Modeling & Simulation, HMS 2009 ISBN 978-84-692-5416-5 146 ABSTRACT The Navigation System Simulation (NaSS) suite of tools has been developed by the Institute for Water Resources of the U.S. Army Corps of Engineers (Corps), as part of the Navigation Technologies Research Program. NaSS is composed of two pri...