An Autumn Song

Spring and autumn territoriality in song sparrows: same behavior, different mechanisms?

Vertebrates show a diverse array of social behaviors associated with territoriality. Field and laboratory experiments indicate that underlying themes-including mechanisms-may exist. For example in birds, extensive evidence over many decades has implicated a role for testosterone in the activation of territorial aggression in reproductive contexts. Territoriality at other times of the year appea...

Virus pathogens suggest an autumn return.

Autumn spring.

artists; signatures and monograms, an international directory. Castagno, John. Scarecrow Pr., ©2007 567 p. $225.00 Castagno, a multimedia artist and sculptor and author of other books in the Artists’ Signatures and Monograms series, presents a reference for identifying, authenticating, and verifying signatures and works of wellknown and little-known abstract artists. About 2,300 painters, print...

, Autumn 2013

Modeling Autumn Sceneries

This paper presents a system for modeling autumn leaves covering vegetation and monuments. We simulate the coloring and aging process by a stochastic model that represents the probability of evolution of a leaf according to the characteristics of the environment. We distribute leaves over the ground by approximating their complex movement by trajectory templates such as fluttering, rolling and ...