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ouvrage
Wyn-Jones, E., - Editeur scientifique ; Gormally, J., - Editeur scientifique | Amsterdam [NLD] : Elsevier | Studies in physical and theoretical chemistry | 1983article/chapitre/communication
D. Coomes ; M. Rees ; L. Turnbull | 1999We describe a clump recognition process that may be used to analyze fully mapped spatial data. Any given spatial pattern can be made less aggregated by replacing the closest-together pair of plants by a single individual at their centroid positi[...]article/chapitre/communication
P. Heffernan | 1996The negative binomial family of distributions is indexed by two parameters, m, the mean, and k, where 1/k is a measure of aggregation. In constructing sequential probability ratio tests (SPRTs) concerning m, it has been found necessary to assume[...]article/chapitre/communication
J. Perry | 1998SADIE (Spatial Analysis by Distance Indices) is a new methodology to detect and measure the degree of nonrandomness in the two-dimensional spatial patterns of populations. It applies the same principles to data in the form of maps as to data in [...]article/chapitre/communication
D. Schotzko ; S. Quisenberry | 1999The effects of tillage, location within a plot, and date of sampling on the spatial distribution of adult Sitona lineatus (L.) in peas, Pisum sativum L., were evaluated using geostatistical analyses. The geostatistics procedure uses spatial vari[...]article/chapitre/communication
W. Kendal | 1995The spatial distribution of plants and animals generally obeys a power law relationship between the variance and the mean of the numbers of individuals per unit area. The mechanistic basis for this relationship remains controversial. Here a prob[...]ouvrage
A. Schärlig | Lausanne, CHE : Presses Polytechniques et Universitaires Romandes | Diriger l'entreprise | 1985Cet ouvrage fait suite au succès de "Décider sur plusieurs critères" paru en 1985. L'auteur a choisi de le limiter à l'agrégation partielle dite aussi surclassement de synthèse et aux méthodes Electre et à leur cousin Prométhée. Cet ouvrage est [...]article/chapitre/communication
E. Prado ; W. Tjallingii | 1997Probing behaviour as affected by a previous infestation was studied in two aphid species on their respective host plants. Probing behaviour by Aphis fabae (reported to have beneficial effects when living in colonies) and Rhopalosiphum padi (with[...]ouvrage
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J. Pettersson ; A. Quiroz ; D. Stephansson ; H. Niemeyer | 1995ouvrage
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J. Perry ; L. Winder ; J. Holland ; R. Alston | 1999A new index and four new graphical displays, termed ''red-blue'' plots, are presented to study and measure clustering in spatially referenced count data. The index can detect clusters in the form of patches, comprising several nearby large count[...]article/chapitre/communication
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