The Tongues of Birds
نویسندگان
چکیده
منابع مشابه
The Confusion of Tongues.
The American Association for the Advancement of Special Articles: Science: Growth in Height and Weight in College and UniThe Confusion of Tongues: DR. OsCAR RIDDnLE ....... 41 versity Women: ROGER G. BARKER and PROFESSOR Obituary: CALVIN P. STONE. Ketene (CHE=CO): A New Lafayette Benedict Mendel: PROFESSOR HENRY G. Reagent for the Detoxification of Vaccine: DR. SHERMAN. Reginald Gordon Earris: ...
متن کاملScaling of the Arnold tongues
When two oscillators are coupled together there are parameter regions called ‘Arnold tongues’ where they mode lock and their motion is periodic with a common frequency. We perform several numerical experiments on a circle map, studying the width of the Arnold tongues as a function of the period q , winding number p / q , and nonlinearity parameter k , in the subcritical region below the transit...
متن کاملDisappearance of Resonance Tongues
where ai(t) = Pi + εQi cos2t, where Pi,Qi and ε are given constants, and where it is assumed that when ε=0 this system exhibits a pair of linearly independent solutions of period 2π . Since the driver cos2t has period π , we have the ingredients for a 2:1 subharmonic resonance which typically results in a tongue of instability involving unbounded solutions when ε >0. We present conditions on th...
متن کاملLost tongues
The latest issue of the United Nations Educational, Scientific and Cultural Organisation (Unesco) atlas on the status of the world's languages finds threats to a growing number as a handful of languages dominate an increasingly 'globalised' world but policy towards languages can have a major effect on survival prospects. In one extreme example of the threatened status of some languages, Unesco ...
متن کاملGeometry of resonance tongues
Resonance tongues arise in bifurcations of discrete or continuous dynamical systems undergoing bifurcations of a fixed point or an equilibrium satisfying certain resonance conditions. They occur in several different contexts, depending, for example, on whether the dynamics is dissipative, conservative, or reversible. Generally, resonance tongues are domains in parameter space, with periodic dyn...
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ژورنال
عنوان ژورنال: The Auk
سال: 1895
ISSN: 0004-8038,1938-4254
DOI: 10.2307/4068862