annuncio seminario

[Elena Stanghellini <stanghel>]

Seminari del Dipartimento di Scienze Statistiche, Universita' di Perugia.

Prof Nick  Fieller Department of Probability & Statistics University of Sheffield

Venerdi' 22 febbraio  ore 15:00, Aula interna del Dipartimento.


Titolo: From sand grains to tomatoes: applications of size distributions.

Particle size data are collected to determine the overall size 
distribution of a collection of particles since it is this which 
characterizes the formation processes of the particles. 
Additionally, this distribution may influence further behaviour of 
the particles.  For example, geologists measure sizes of sand 
grains since the size distributions from water deposited 
samples and wind deposited samples can be distinguished 
and so samples from unknown environments can be 
classified. Other examples occur in disciplines as diverse as 
medicine, fuel technology and horticulture. Inevitably, such a 
wide variety of disciplines has generated a wide
variety of techniques for processing particle size data.

This presentation will concentrate on various applications of 
modelling size distributions using log-skew-Laplace 
distributions in particular.  These combine computational ease 
and the flexibility to handle more complex extensions. One of 
the by-products of using such models is that they can be 
used to answer other questions of interest not directly related 
to the size distributions themselves. These include problems 
of average shapes of soil grains and the relationship between 
size and weight of tomatoes (of major commercial importance 
to UK horticulturalists).  
 


Per informazioni:
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Elena Stanghellini 
Dipartimento di Scienze Statistiche
Via A. Pascoli - C.P. 1315 Succ. 1
06100 Perugia (Italy)

Tel +39 075 5855229 or 5855242
Fax +39 075 43242

email: stanghel@stat.unipg.it
home page: http://www.stat.unipg.it/DSS/elena.html
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