On universality in human correspondence activity (2009)
Malmgren, R. Dean, Stouffer, Daniel B., Amaral, Luís A. Nunes
5 pages.-- Supporting information available at: http://www.sciencemag.org/cgi/content/full/sci;325/5948/1696/DC1
On Universality in Human Correspondence Activity (2009)
Malmgren, R. Dean, Stouffer, Daniel B., Amaral, Luis A. Nunes
Identifying and modeling patterns of human activity has important ramifications in applications ranging from predicting disease spread to optimizing resource allocation. Because of its relevance and...
A Poissonian explanation for heavy-tails in e-mail communication (2009)
Malmgren, R. Dean, Stouffer, Daniel B., Motter, Adilson E., Amaral, Luis A. N.
Patterns of deliberate human activity and behavior are of utmost importance in areas as diverse as disease spread, resource allocation, and emergency response. Because of its widespread availability...
Log-normal statistics in e-mail communication patterns (2006)
Stouffer, Daniel B., Malmgren, R. Dean, Amaral, Luis A. N.
Following up on Barabasi's recent letter to Nature [435, 207--211 (2005)], we systematically investigate the time series of e-mail usage for 3,188 users at a university. We focus on two quantities...
Comment on Barabasi, Nature 435, 207 (2005) (2005)
Stouffer, Daniel B., Malmgren, R. Dean, Amaral, Luis A. N.
In a recent letter, Barabasi claims that the dynamics of a number of human activities are scale-free [1]. He specifically reports that the probability distribution of time intervals tau between...
A robust measure of food web intervality
Stouffer, Daniel B., Camacho, Juan, Amaral, Luís A. Nunes
Intervality of a food web is related to the number of trophic dimensions characterizing the niches in a community. We introduce here a mathematically robust measure for food web intervality. It has...
Evidence for the existence of a robust pattern of prey selection in food webs
Stouffer, Daniel B, Camacho, Juan, Jiang, Wenxin, Nunes Amaral, Luís A
Food webs aim to provide a thorough representation of the trophic interactions found in an ecosystem. The complexity of empirical food webs, however, is leading many ecologists to focus dynamic...
A Poissonian explanation for heavy tails in e-mail communication
Malmgren, R. Dean, Stouffer, Daniel B., Motter, Adilson E., Amaral, Luís A. N.
Patterns of deliberate human activity and behavior are of utmost importance in areas as diverse as disease spread, resource allocation, and emergency response. Because of its widespread availability...