منابع مشابه
Global Cocktail Parties and an Arms-Race in Language Evolution
Many species change their signals in response to crowding, consistent with information theoretic accounts of signalling in the presence of noise. In this article we explore the hypothesis that the statistical structure of language has evolved to enhance reception and processing in response to competition in the language market. In particular, we investigate how concreteness has changed over the...
متن کاملEdge-clique graphs of cocktail parties have unbounded rankwidth
In an attempt to find a polynomial-time algorithm for the edgeclique cover problem on cographs we tried to prove that the edge-clique graphs of cographs have bounded rankwidth. However, this is not the case. In this note we show that the edge-clique graphs of cocktail party graphs have unbounded rankwidth.
متن کاملMultiple signals and male spacing affect female preference at cocktail parties in treefrogs.
Effective acoustic communication in the face of intense conspecific background noise constitutes a constant sensory challenge in chorusing and colonial species. An evolutionary approach suggests that behavioural and environmental constraints in these species should have shaped signal design and signalling behaviour to enable communication in noisy conditions. This could be attained both through...
متن کاملStarspots and Exoplanets
The discovery of exoplanets has resulted from a significant increase in the precision of stellar radial velocity measurements. In the past decade this precision has improved from several hundreds of m s 1 to a few m s 1. In the near future astrometric measurements will make a similar increase in their precision by factors of several hundred. Although discovering exoplanets is driving the need f...
متن کاملStatistical properties of exoplanets
In this article we present a detailed spectroscopic analysis of more than 50 extra-solar planet host stars. Stellar atmospheric parameters and metallicities are derived using high resolution and high S/N spectra. The spectroscopy results, added to the previous studies, imply that we have access to a large and uniform sample of metallicities for about 80 planet hosts stars. We make use of this s...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2012
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/747/1/12