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The horsepower crash to be expected in the USA

Renshaw, E.

Amsterdam : Elsevier

Energy Economics 12 (1990), S. 89-92

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Details

ISSN: 0140-9883

Schlagwort(e): Crash ; Fuel efficiency ; Horsepower ; Prime mover

Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Thema: Energietechnik , Wirtschaftswissenschaften

Materialart: Digitale Medien

URL: http://linkinghub.elsevier.com/retrieve/pii/0140-9883(90)90041-D

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Digitale Medien

The description of spatial pattern using two-dimensional spectral analysis (1984)

Renshaw, E. ; Ford, E. D.

Springer

Plant ecology 56 (1984), S. 75-85

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Details

ISSN: 1573-5052

Schlagwort(e): Inhibition ; Invasion ; Pattern ; Simulation ; Spectral analysis ; Vegetation analysis

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract Two-dimensional spectral analysis is a general interrogative technique for describing spatial patterns. Not only is it able to detect all possible scales of pattern which can be present in the data but it is also sensitive to directional components. Four functions are described: the autocorrelation function; the periodogram; and, the R- and Θ-spectra which respectively summarize the periodogram in terms of scale and directional components of pattern. The use of these functions is illustrated by their application to a simple wave pattern, a wave pattern with added noise, and patterns simulating competition and invasion processes.