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Stromatolites: why do we care? (open access)

Stromatolites: why do we care?

Article discussing stromatolites. The authors apply the method of Diffusion Entropy (DE) to the study of stromatolites by means of a two-dimensional procedure that makes it possible for us to compare the DE analysis to the results of a compression method.
Date: July 14, 2011
Creator: Ignaccolo, Massimiliano; Schwettmann, Arne; Failla, Roberto; Storrie-Lombardi, Michael C. & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Collective behavior and evolutionary games - An introduction (open access)

Collective behavior and evolutionary games - An introduction

This article is an introduction to a special issue in Chaos, Solitons & Fractals with the goal of attracting submissions that identify unifying principles that describe the essential aspects of collective behavior, and which thus allow for a better interpretation and foster the understanding of the complexity arising in such systems.
Date: June 28, 2013
Creator: Perc, Matjaž & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Mimicking the collective intelligence of human groups as an optimization tool for complex problems (open access)

Mimicking the collective intelligence of human groups as an optimization tool for complex problems

This article presents a novel optimization algorithm belonging to the class of swarm intelligence optimization methods.
Date: April 4, 2018
Creator: De Vincenzo, Ilario; Massari, Giovanni F.; Giannoccaro, Ilaria; Carbone, Giuseppe & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
On social sensitivity to either zealot or independent minorities (open access)

On social sensitivity to either zealot or independent minorities

This article uses the self-organized temporal criticality (SOTC) model to identify the timing of crucial events as a new mechanism with which to generate criticality, thereby establishing a way for the internal dynamics of the decision making process to suppresss the sensitivity of social opinion to either zealot or independent minorities.
Date: March 27, 2018
Creator: Mahmoodi, Korosh; Grigolini, Paolo & West, Bruce J.
Object Type: Article
System: The UNT Digital Library
A fluctuating environment as a source of periodic modulation (open access)

A fluctuating environment as a source of periodic modulation

Article discussing a fluctuating environment as a source of periodic modulation.
Date: March 12, 2007
Creator: Bianco, Simone; Grigolini, Paolo & Paradisi, Paolo
Object Type: Article
System: The UNT Digital Library
Response of Complex Systems to Complex Perturbations: the Complexity Matching Effect (open access)

Response of Complex Systems to Complex Perturbations: the Complexity Matching Effect

Paper discussing the complexity matching effect.
Date: December 2006
Creator: Allegrini, Paolo; Bologna, Mauro; Grigolini, Paolo & West, Bruce J.
Object Type: Paper
System: The UNT Digital Library
The Markov approximation revisited: inconsistency of the standard quantum Brownian motion model (open access)

The Markov approximation revisited: inconsistency of the standard quantum Brownian motion model

Article discussing the Markov approximation and inconsistency of the standard quantum Brownian motion model.
Date: February 1999
Creator: Rocco, A. (Andrea) & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Dynamical model for DNA sequences (open access)

Dynamical model for DNA sequences

This article discusses a dynamical model for DNA sequences based on the assumption that the statistical properties of DNA paths are determined by the joint action of two processes, one deterministic with long-range correlations and the other random and δ-function correlated.
Date: November 1995
Creator: Allegrini, Paolo; Barbi, M.; Grigolini, Paolo & West, Bruce J.
Object Type: Article
System: The UNT Digital Library
Chaos and thermal conductivity (open access)

Chaos and thermal conductivity

Article discussing research on chaos and thermal conductivity.
Date: December 1995
Creator: Corezzi, Silvia; Bianucci, Marco & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Neural Dynamics: Criticality, Cooperation, Avalanches and Entrainment between Complex Networks (open access)

Neural Dynamics: Criticality, Cooperation, Avalanches and Entrainment between Complex Networks

Book chapter discussing neural dynamics and the criticality, cooperation, avalanches and entrainment between complex networks.
Date: May 22, 2012
Creator: Grigolini, Paolo; Zare, Marzieh; Svenkeson, Adam & West, Bruce J.
Object Type: Book Chapter
System: The UNT Digital Library
Scaling Breakdown: A Signature of Aging (open access)

Scaling Breakdown: A Signature of Aging

In this article, the authors prove that the Lévy walk is characterized by bilinear scaling. This effect mirrors the existence of a form of aging that does not require the adoption of nonstationary conditions.
Date: July 12, 2002
Creator: Allegrini, Paolo; Bellazzini, Jacopo; Bramanti, G.; Ignaccolo, Massimiliano; Grigolini, Paolo & Yang, J.
Object Type: Article
System: The UNT Digital Library
Linear Response to Perturbation of Nonexponential Renewal Processes (open access)

Linear Response to Perturbation of Nonexponential Renewal Processes

This article discusses the linear response to perturbation of nonexponential renewal processes.
Date: November 23, 2005
Creator: Barbi, Francesco; Bologna, Mauro & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Quantum Entanglement and Entropy (open access)

Quantum Entanglement and Entropy

This article discusses quantum entanglement and entropy.
Date: August 20, 2001
Creator: Giraldi, Filippo & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Absorption and Emission in the Non-Poissonian Case (open access)

Absorption and Emission in the Non-Poissonian Case

Article on absorption and emission in the Non-Poissonian Case.
Date: July 28, 2004
Creator: Aquino, Gerardo; Palatella, Luigi & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Solar Turbulence in Earth's Global and Regional Temperature Anomalies (open access)

Solar Turbulence in Earth's Global and Regional Temperature Anomalies

This article presents a study of the influence of solar activity on the earth's temperature. In particular, the authors focus on the repercussion of the fluctuations of the solar irradiance on the temperature of the Northern and Southern hemispheres as well as on land and ocean regions.
Date: February 26, 2004
Creator: Scafetta, Nicola; Grigolini, Paolo; Imholt, Timothy; Roberts, James A. & West, Bruce J.
Object Type: Article
System: The UNT Digital Library
Random Growth of Interfaces as a Subordinated Process (open access)

Random Growth of Interfaces as a Subordinated Process

Article discussing the random growth of interfaces as a subordinated process.
Date: July 30, 2004
Creator: Failla, Roberto; Grigolini, Paolo; Ignaccolo, Massimiliano & Schwettmann, Arne
Object Type: Article
System: The UNT Digital Library
Aging and Rejuvenation with Fractional Derivatives (open access)

Aging and Rejuvenation with Fractional Derivatives

This article discusses aging rejuvenation with fractional derivatives.
Date: September 10, 2004
Creator: Aquino, Gerardo; Bologna, Mauro; Grigolini, Paolo & West, Bruce J.
Object Type: Article
System: The UNT Digital Library
Power-Law Time Distribution of Large Earthquakes (open access)

Power-Law Time Distribution of Large Earthquakes

Article discussing power-law time distribution of large earthquakes and a study of the statistical properties of time distribution of seismicity in California by means of diffusion entropy.
Date: May 2003
Creator: Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.
Object Type: Article
System: The UNT Digital Library
Scaling Detection in Time Series: Diffusion Entropy Analysis (open access)

Scaling Detection in Time Series: Diffusion Entropy Analysis

Article discussing a method of statistical analysis based on the Shannon entropy of the diffusion process generated by the time series, called diffusion entropy analysis (DEA).
Date: September 25, 2002
Creator: Scafetta, Nicola & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Long- and Short-Time Analysis of Heartbeat Sequences: Correlation with Mortality Risk in Congestive Heart Failure Patients (open access)

Long- and Short-Time Analysis of Heartbeat Sequences: Correlation with Mortality Risk in Congestive Heart Failure Patients

Article discussing long- and short-time analysis of heartbeat sequences and the correlation with mortality risk in congestive heart failure patients.
Date: 2003
Creator: Allegrini, Paolo; Balocchi, Rita; Chillemi, Santi; Grigolini, Paolo; Hamilton, P.; Maestri, Roberto et al.
Object Type: Article
System: The UNT Digital Library
Vortex Dynamics in Evolutive Flows: A Weakly Chaotic Phenomenon (open access)

Vortex Dynamics in Evolutive Flows: A Weakly Chaotic Phenomenon

In this article, the authors make use of a wavelet method to extract, from experimental velocity signals obtained in an evolutive flow, the dominating velocity components generated by vortex dynamics.
Date: 2003
Creator: Bellazzini, Jacopo; Menconi, Giulia; Ignaccolo, Massimiliano; Buresti, Guido & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Generalized Master Equation Via Aging Continuous-Time Random Walks (open access)

Generalized Master Equation Via Aging Continuous-Time Random Walks

This article discusses the problem of the equivalence between continuous-time random walk (CTRW) and generalized master equation (GME).
Date: 2003
Creator: Allegrini, Paolo; Aquino, Gerardo; Grigolini, Paolo; Palatella, Luigi & Rosa, Angelo
Object Type: Article
System: The UNT Digital Library
Lévy Scaling: The Diffusion Entropy Analysis Applied to DNA Sequences (open access)

Lévy Scaling: The Diffusion Entropy Analysis Applied to DNA Sequences

Article on Lévy scaling and the diffusion entropy analysis applied to DNA sequences. The authors address the problem of the statistical analysis of a time series generated by complex dynamics with the diffusion entropy analysis.
Date: September 20, 2002
Creator: Scafetta, Nicola; Latora, Vito & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Biophotons-and-emergence-of-quantum-coherencea-diffusion-entropy-analysisEntropy (open access)

Biophotons-and-emergence-of-quantum-coherencea-diffusion-entropy-analysisEntropy

This article studies the emission of photons from germinating seeds using an experimental technique designed to detect light of extremely small intensity. It analyzes the dark count signal without germinating seeds as well as the photon emission during the germination process.
Date: April 29, 2021
Creator: Benfatto, Maurizio; Pace, Elisabetta; Curceanu, Catalina; Scordo, Alessandro; Clozza, Alberto; Davoli, Ivan et al.
Object Type: Article
System: The UNT Digital Library