activity
19942025
most citedMultifractality in Human Heartbeat Dynamics

1.5k citations · 9.9k across the 39 of their papers we have counts for

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Showing 1997Show all

5 papers · 1 filter

cond-mat.stat-mech1997★ 240 cited

Stochastic Feedback and the Regulation of Biological Rhythms

Plamen Ch. Ivanov, Luis A. N. Amaral, Ary Goldberger +1

We propose a general approach to the question of how biological rhythms spontaneously self-regulate, based on the concept of ``stochastic feedback''. We illustrate this approach by…

cond-mat.stat-mech1997★ 269 cited

Power Law Scaling for a System of Interacting Units with Complex Internal Structure

L. A. N. Amaral, S. V. Buldyrev, S. Havlin +2

We study the dynamics of a system composed of interacting units each with a complex internal structure comprising many subunits. We consider the case in which each subunit grows in…

cond-mat.stat-mech1997★ 22 cited

Universality classes for rice-pile models

L. A. N. Amaral, K. B. Lauritsen

We investigate sandpile models where the updating of unstable columns is done according to a stochastic rule. We examine the effect of introducing nonlocal relaxation mechanisms. W…

cond-mat.stat-mech1997★ 119 cited

Scaling behavior in economics: II. Modeling of company growth

S. V. Buldyrev, L. A. N. Amaral, S. Havlin +5

In the preceding paper we presented empirical results describing the growth of publicly-traded United States manufacturing firms within the years 1974--1993. Our results suggest th…

cond-mat.stat-mech1997

Scaling behavior in economics: I. Empirical results for company growth

L. A. N. Amaral, S. V. Buldyrev, S. Havlin +5

We address the question of the growth of firm size. To this end, we analyze the Compustat data base comprising all publicly-traded United States manufacturing firms within the year…