1.5k citations · 9.9k across the 39 of their papers we have counts for
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Dynamics of Sleep-Wake Transitions During Sleep
Chung-Chuan Lo, Luis A. Nunes Amaral, Shlomo Havlin +4
We study the dynamics of the awakening during the night for healthy subjects and find that the wake and the sleep periods exhibit completely different behavior: the durations of wa…
A Random Matrix Approach to Cross-Correlations in Financial Data
V. Plerou, P. Gopikrishnan, B. Rosenow +3
We analyze cross-correlations between price fluctuations of different stocks using methods of random matrix theory (RMT). Using two large databases, we calculate cross-correlation…
Behavioral-Independent Features of Complex Heartbeat Dynamics
Luis A. Nunes Amaral, Plamen Ch. Ivanov, Naoko Aoyagi +5
We test whether the complexity of cardiac interbeat interval time series is simply a consequence of the wide range of scales characterizing human behavior, especially physical acti…
Robust Patterns in Food Web Structure
J. Camacho, R. Guimera, L. A. N. Amaral
We analyze the properties of seven community food webs from a variety of environments--including freshwater, marine-freshwater interfaces and terrestrial environments. We uncover q…
Analytical solution of a model for complex food webs
Juan Camacho, Roger Guimera, Luis A. N. Amaral
We investigate numerically and analytically a recently proposed model for food webs [Nature {\bf 404}, 180 (2000)] in the limit of large web sizes and sparse interaction matrices.…