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Just published by Mo, Guang Ying and me in Bulletin de Methode 
Sociologique (a Sage journal), number 113 (Jan 2012).

Abstract:

Sequencing is an indispensable decision-making process during information 
flows. This paper proposes the conceptualization of sequencing to 
understand how and why information senders prioritize some network members 
when they communicate with others. We examine the usefulness of this 
conceptualization with data collected from GRAND, a scholarly network. The 
concept of sequencing enables researchers to explore the decision-making 
process that occurs prior to information flows and link individuals’ 
behavior to the social context.

I'm sure Mo would be delighted to send you reprints:
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  Barry Wellman
  _______________________________________________________________________

   S.D. Clark Professor of Sociology, FRSC               NetLab Director
   Department of Sociology                  725 Spadina Avenue, Room 388
   University of Toronto   Toronto Canada M5S 2J4   twitter:barrywellman
   http://www.chass.utoronto.ca/~wellman             fax:+1-416-978-3963
   Updating history:      http://chass.utoronto.ca/oldnew/cybertimes.php
  _______________________________________________________________________

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