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red for Mathematics

  • To: mathgroup at
  • Subject: red for Mathematics
  • From: invest at (Direccion de Investigacion)
  • Date: Mon, 21 Feb 1994 18:33:56 -0500 (EST)

Mathematica Users:

I  am  now  working  on applications of  Nonstationary  Time
Series  Analysis  to  brain  electrical  signals  by   using
standard  packages  of  the  Mathematica  System.  In   this
context,  several difficulties around the subject of  making
decision  about of signal depacture  from  stationarity have  
been arisen. Hence, I am using some approximating techniques   
like confidence intervals  or  boostrap   for focusing  this  
problem on. But unfortunately, I have not  found  a boundary  
of  bias for  both  real  and  imaginary crosspectra. One of 
the most magisterial  dissertation  on this whole  topic has 
been presented by Dr.G. Melard from Brussels Free University. 
I have been attempting to  contact him  but  I dont have the 
exact address. I would appreciate very  much  any suggestion 
about how to save this  troubles. Maybe  someone  could give 
me Dr.  Melard's  address,  fax, telephone  or Email numbers. 
Please if  you  are  going to answer me you must do it by my 
Email number (invest at I am not user of Mathematica 

Thanks very much in advance.

                              Jorge J. Riera
                              Cuban Neuroscience Center

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