Results 231 to 240 of about 1,952,937 (282)

Evolutionary adaptation of CCD4 enzymes in <i>Buddleja alternifolia</i> for crocetin biosynthesis. [PDF]

Front Plant Sci
Parreño E, Morote L, López Jiménez AJ, Moreno-Giménez E, Rubio-Moraga Á, Ahrazem O, Gómez-Gómez L.   +6 more
europepmc   +1 more source

Autistic-Like Traits in Members of the General Population and Mate Retention Tactics: The Mediation of Attachment Styles and Reproductive Strategies. [PDF]

Evol Psychol
Łukasik A, Łaba-Hornecka A.
europepmc   +1 more source

EXAMPLES OF THE EVOLUTIONARY SPECTRUM THEORY [PDF]

Journal of Time Series Analysis, 1985
Abstract.The evolutionary spectrum theory is the most elaborated approach to the definition of the spectrum for a non‐stationary process. This paper contains examples where all the concepts of the theory are illustrated.
Guy Mélard
exaly   +2 more sources

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IF and GD estimation from evolutionary spectrum

Signal Processing, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
M. Sansal, A. Salim Kayhan
exaly   +2 more sources

Cognitive radio spectrum allocation using evolutionary algorithms

IEEE Transactions on Wireless Communications, 2009
Cognitive radio has been regarded as a promising technology to improve spectrum utilization significantly. In this letter, spectrum allocation model is presented firstly, and then spectrum allocation methods based on genetic algorithm (GA), quantum genetic algorithm (QGA), and particle swarm optimization (PSO), are proposed.
Zhen Peng, Shilian Zheng, Zhijin Zhao
exaly   +2 more sources

Audio Signal Discrimination Using Evolutionary Spectrum

International Journal of Computers and Applications, 2009
In this paper, a joint-distribution algorithm, mainly, the evolutionary spectrum (ES) for audio signal discrimination is proposed and discussed. The purpose of audio signal discrimination is to build two different libraries: speech library and music library, from a stream of sounds.
exaly   +2 more sources

The transitory evolutionary spectrum

Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing, 2002
Propose a new definition for the time-dependent spectrum of a non-stationary process. The authors show that this spectrum can be considered as the dual of Priestley's (1981) evolutionary spectrum. They demonstrate how this dual spectrum successfully characterizes signals whose components are highly localized in time. They give an estimator of this dual
C. S. Detka, Amro El-Jaroudi
openaire   +1 more source

The generalized evolutionary spectrum

IEEE Transactions on Signal Processing, 1996
Evolutionary spectral theory defines a decomposition of signal energy jointly over time and frequency by assuming that processes are composed of sinusoidal components with time-dependent amplitudes. We expand this theory by allowing time variations in the frequency of the sinusoidal components. Examples are presented illustrating the advantages of this
C. S. Detka, Amro El-Jaroudi
openaire   +1 more source