UNT College of Arts and Sciences - 404 Matching Results

Search Results

open access

Memory Beyond Memory in Heart Beating, a Sign of a Healthy Physiological Condition

In this article, the authors describe two types of memory and illustrate each using artificial and actual heartbeat data sets.

Date: April 11, 2002

Creator: Allegrini, Paolo; Grigolini, Paolo; Hamilton, P.; Palatella, Luigi & Raffaelli, G.

Item Type: Article

open access

Mega et al. Reply

This article is a reply to a comment by A. Helmstetter and D. Sornette about the article 'Power-Law Time Distribution of Large Earthquakes' from 2003.

Date: March 26, 2004

Creator: Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.

Item Type: Article

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.

Item Type: Article

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

Item Type: Article

open access

Quantum Entanglement and Entropy

This article discusses quantum entanglement and entropy.

Date: August 20, 2001

Creator: Giraldi, Filippo & Grigolini, Paolo

Item Type: Article

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

Item Type: Article

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.

Item Type: Article

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

Item Type: Article

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.

Item Type: Article

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.

Item Type: Article

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

Item Type: Article

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.

Item Type: Article

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

Item Type: Article

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

Item Type: Article

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

Item Type: Article

open access

Fractional Brownian motion as a nonstationary process: An alternative paradigm for DNA sequences

Article discussing the fractional Brownian motion (FBM) as a nonstationary process and an alternative paradigm for DNA sequences.

Date: April 1998

Creator: Allegrini, Paolo; Buiatti, Marco, 1972-; Grigolini, Paolo & West, Bruce J.

Item Type: Article

open access

Anomalous diffusion and ballistic peaks: A quantum perspective

Article discussing research on anomalous diffusion and ballistic peaks.

Date: June 1998

Creator: Stefancich, Marco; Allegrini, Paolo; Bonci, Luca; Grigolini, Paolo & West, Bruce J.

Item Type: Article

open access

Non-Gaussian statistics of anomalous diffusion: The DNA sequences of prokaryotes

This article discusses a non-Gaussian indicator to measure the deviation from Gaussian statistics of a diffusion process generated by dichotomous fluctuations with infinite memory.

Date: September 1998

Creator: Allegrini, Paolo; Buiatti, Marco, 1972-; Grigolini, Paolo & West, Bruce J.

Item Type: Article

open access

Tunneling rate fluctuations induced by nonlinear resonances: A quantitative treatment based on semiclassical arguments

This article discusses tunneling rate fluctuations induced by nonlinear resonances. The authors investigate the tunneling process between two symmetric stable islands of a forced pendulum Hamiltonian in the weak chaos regime.

Date: November 1998

Creator: Bonci, Luca; Farusi, Andrea; Grigolini, Paolo & Roncaglia, Roberto

Item Type: Article

open access

Fractional calculus as a macroscopic manifestation of randomness

Article discussing fractional calculus as a macroscopic manifestation of randomness.

Date: March 1999

Creator: Grigolini, Paolo; Rocco, A. (Andrea) & West, Bruce J.

Item Type: Article

open access

Lévy diffusion as an effect of sporadic randomness

This article discusses Lévy diffusion as an effect of sporadic randomness.

Date: December 1999

Creator: Bologna, Mauro; Grigolini, Paolo & Riccardi, Juri

Item Type: Article

open access

Fluctuation-Dissipation Process Without a Time Scale

Article discussing the fluctuation-dissipation process without a time scale.

Date: May 2000

Creator: Annunziato, Mario; Grigolini, Paolo & Riccardi, Juri

Item Type: Article

open access

Towards the thermodynamics of localization processes

In this article, the authors study the entropy time evolution of a quantum mechanical model, which is frequently used as a prototype for Anderson's localization.

Date: September 2000

Creator: Grigolini, Paolo; Pala, Marco G.; Palatella, Luigi & Roncaglia, Roberto

Item Type: Article

open access

Canonical and noncanonical equilibrium distribution

Article discussing research on canonical and noncanonical equilibrium distribution.

Date: 2001

Creator: Annunziato, Mario; Grigolini, Paolo & West, Bruce J.

Item Type: Article

UNT College of Arts and Sciences - 404 Matching Results

Search Results

Add Filters

Applied Filters

Memory Beyond Memory in Heart Beating, a Sign of a Healthy Physiological Condition

Mega et al. Reply

Scaling Breakdown: A Signature of Aging

Linear Response to Perturbation of Nonexponential Renewal Processes

Quantum Entanglement and Entropy

Absorption and Emission in the Non-Poissonian Case

Solar Turbulence in Earth's Global and Regional Temperature Anomalies

Random Growth of Interfaces as a Subordinated Process

Aging and Rejuvenation with Fractional Derivatives

Power-Law Time Distribution of Large Earthquakes

Scaling Detection in Time Series: Diffusion Entropy Analysis

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

Vortex Dynamics in Evolutive Flows: A Weakly Chaotic Phenomenon

Generalized Master Equation Via Aging Continuous-Time Random Walks

Lévy Scaling: The Diffusion Entropy Analysis Applied to DNA Sequences

Fractional Brownian motion as a nonstationary process: An alternative paradigm for DNA sequences

Anomalous diffusion and ballistic peaks: A quantum perspective

Non-Gaussian statistics of anomalous diffusion: The DNA sequences of prokaryotes

Tunneling rate fluctuations induced by nonlinear resonances: A quantitative treatment based on semiclassical arguments

Fractional calculus as a macroscopic manifestation of randomness

Lévy diffusion as an effect of sporadic randomness

Fluctuation-Dissipation Process Without a Time Scale

Towards the thermodynamics of localization processes

Canonical and noncanonical equilibrium distribution