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Digitale Medien

A multiple interval physical map of the pericentromeric region of human chromosome 10 (1994)

Tunnacliffe, A. ; Jackson, M. S. ; Gardner, E. ; [weitere]

Springer

Human genetics 〈Berlin〉 93 (1994), S. 313-318

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ISSN: 1432-1203

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Abstract Five intervals in the pericentromeric region of human chromosome 10 have been defined using a panel of somatic cell hybrids carrying portions of the chromosome. The map positions of twelve markers, consisting of four genes and eight anonymous DNA segments, have been localized by assignment to one of the five intervals. Several other markers could be placed in specific intervals by genetic linkage to assigned loci. When previously published data are incorporated, the summary map of the pericentromeric region encompasses thirty-two loci in bands 10p11.2-q11.2.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00212029

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Digitale Medien

Scaling and interleaving of subsystem Lyapunov exponents for spatio-temporal systems (1999)

Carretero-González, R. ; Ørstavik, S.

Woodbury, NY : American Institute of Physics (AIP)

Chaos 9 (1999), S. 466-482

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ISSN: 1089-7682

Quelle: AIP Digital Archive

Thema: Physik

Notizen: The computation of the entire Lyapunov spectrum for extended dynamical systems is a very time consuming task. If the system is in a chaotic spatio-temporal regime it is possible to approximately reconstruct the Lyapunov spectrum from the spectrum of a subsystem by a suitable rescaling in a very cost effective way. We compute the Lyapunov spectrum for the subsystem by truncating the original Jacobian without modifying the original dynamics and thus taking into account only a portion of the information of the entire system. In doing so we notice that the Lyapunov spectra for consecutive subsystem sizes are interleaved and we discuss the possible ways in which this may arise. We also present a new rescaling method, which gives a significantly better fit to the original Lyapunov spectrum. We evaluate the performance of our rescaling method by comparing it to the conventional rescaling (dividing by the relative subsystem volume) for one- and two-dimensional lattices in spatio-temporal chaotic regimes. Finally, we use the new rescaling to approximate quantities derived from the Lyapunov spectrum (largest Lyapunov exponent, Lyapunov dimension, and Kolmogorov–Sinai entropy), finding better convergence as the subsystem size is increased than with conventional rescaling. © 1999 American Institute of Physics.