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BEGIN:VEVENT
DTSTAMP:20260824T125041Z
LAST-MODIFIED:20121116T203858Z
DTSTART:20120801T160000Z
DTEND:20120801T170000Z
UID:event954@bu.edu
URL:http://physics.bu.edu/internal/events/show/954
SUMMARY:Coevolution of Reputation and Impact across the Academic Career
DESCRIPTION:Featuring Alexander Petersen\, Institute for Advanced Study\, L
	ucca\, Italy\nHosted by: H. Eugene Stanley\n\nPart of the Biophysics/Conden
	sed Matter Seminar Series.\n\nAbstract: The cumulative citations to a paper
	 is a universal measure of impact\, but the role that author reputation pla
	ys in the life-cycle of the citation rate remains poorly understood.\n\nAs 
	a result\, models of citation  dynamics and career trajectories overlook th
	e collaboration and reputation spillovers constitute a cumulative advantage
	 underlying the competitive aspects of science. To better understand the re
	putation effect in science\, we analyze the longitudinal citation dynamics 
	of 350 leading scientists from biology\, physics\, and mathematics.\n\nWe u
	ncover statistical regularities in the evolution of productivity and impact
	 which we use as benchmarks for a theoretical model of career growth that w
	e test and validate on real careers. Our model incorporates the  life-cycle
	 effect for individual papers\, the cumulative advantage arising from scien
	tific reputation\, and the preferential attachment effect for citation dyna
	mics. We find that the author reputation effect dominates in the initial ph
	ase of the citation life-cycle\, but that the preferential attachment mecha
	nism emerges as the main component behind the sustained citation rate of hi
	ghly cited papers. Comparing between the three disciplines\, we show that t
	he  impact  life-cycle differs between fields: the axiomatic discoveries in
	 mathematics have a very long shelf-life\, whereas the rapid pace in biolog
	y and physics results in a shorter half-life despite the intense citation r
	ate in the field.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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