RE: AI-GEOSTATS: Sichel's t estimator

2007-01-30 Thread Juan de Dios Magallanes Quintanar 
Thank you Isobel:

 

Really I´m very interested in Sichel´s estimator.

 

Best Regards.

 

Juan de Dios Magallanes Quintanar

 

  _  

De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] En nombre de
Isobel Clark
Enviado el: Martes, 30 de Enero de 2007 12:45 p.m.
Para: ai-geostats@jrc.it
Asunto: Re: AI-GEOSTATS: Sichel's t estimator

 

The later papers discuss the variations on the lognormal prompted by
Sichel's revivavl of interest in the late 1980s. The actual lognormal basis
is not discussed in those papers. 

 

I am tracking down a copy of my original paper to add the mathematical
addenda on the 1987 paper and will post to the list when it is available.

 

Isobel

http://www/kriging.com

Eric PIRARD <[EMAIL PROTECTED]> wrote:


Hi Peter,
Additional work has been done by Sichel and Kleingeld more recently.
They should be more available than the original one :

Comparative study of three frequency-distribution models for use in ore
evaluation 
Sichel, H S; Kleingeld, W J; Assibey-Bonsu, W J S Afr Inst Min Metall V92,
N4, April 1992, P91–99 


New generalized model of observed ore value distributions H. S. Sichel, C.
E. Dohm 8c W. J. Kleingeld, Transactions - InsXitution of Mining &
Metallurgy, Section A, 104(May- Aug), 1995, pp AllS-A123 

New generalized model of observed ore value distributions 
Sichel, H.S. / Dohm, C.E. / Kleingeld, W.J.,
International Journal of Rock Mechanics and Mining Sciences & Geomechanics
Abstracts, Jan 1996 

Eric PIRARD   /. 

UNIVERSITE DE LIEGE (ULg) 

ArGEnCo Dpt 

GEMME - Georesources & Mineral Imaging 

Sart Tilman B52 

4000 Liège (Belgium) 

Tél. : +32-4-3669528Fax.: +32-4-3669520 

http://www.mica.ulg.ac.be <http://www.mica.ulg.ac.be/>  

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Re: AI-GEOSTATS: Sichel's t estimator

2007-01-30 Thread Isobel Clark 
The later papers discuss the variations on the lognormal prompted by Sichel's 
revivavl of interest in the late 1980s. The actual lognormal basis is not 
discussed in those papers. 
   
  I am tracking down a copy of my original paper to add the mathematical 
addenda on the 1987 paper and will post to the list when it is available.
   
  Isobel
  http://www/kriging.com

Eric PIRARD <[EMAIL PROTECTED]> wrote:
Hi Peter,
Additional work has been done by Sichel and Kleingeld more recently.
They should be more available than the original one :

Comparative study of three frequency-distribution models for use in ore 
evaluation 
Sichel, H S; Kleingeld, W J; Assibey-Bonsu, W J S Afr Inst Min Metall V92, N4, 
April 1992, P91–99 New generalized model of observed ore value distributions H. 
S. Sichel, C. E. Dohm 8c W. J. Kleingeld, Transactions - InsXitution of Mining 
& Metallurgy, Section A, 104(May- Aug), 1995, pp AllS-A123 

New generalized model of observed ore value distributions 
Sichel, H.S. / Dohm, C.E. / Kleingeld, W.J.,
International Journal of Rock Mechanics and Mining Sciences & Geomechanics 
Abstracts, Jan 1996 

Eric PIRARD   /.  
   UNIVERSITE DE LIEGE (ULg)   
   ArGEnCo Dpt   
   GEMME - Georesources & Mineral Imaging   
   Sart Tilman B52   
   4000 Liège (Belgium)   
   Tél. : +32-4-3669528Fax.: +32-4-3669520   
   http://www.mica.ulg.ac.be + + To post a message to the list, send it to 
ai-geostats@jrc.it + To unsubscribe, send email to majordomo@ jrc.it with no 
subject and "unsubscribe ai-geostats" in the message body. DO NOT SEND 
Subscribe/Unsubscribe requests to the list + As a general service to list 
users, please remember to post a summary of any useful responses to your 
questions. + Support to the forum can be found at http://www.ai-geostats.org/