EPJ Special Topics (EPJ ST)

Open Access

Editorial

Complex bio rhythms p. 815

Akif Akgul, Marcelo A. Savi, Mustafa Zahid Yildiz, Miguel A. F. Sanjuan and Jun Ma

Published online: 20 April 2022

DOI: 10.1140/epjs/s11734-022-00540-7

A machine learning approach to detect aortic valve dysfunction through phase portrait feature extraction p. 819

S. Sankararaman

Published online: 14 November 2021

DOI: 10.1140/epjs/s11734-021-00326-3

Strengthen the circadian rhythms by the mathematical model of the SCN p. 827

Changgui Gu, Jiahui Li, Jian Zhou, Huijie Yang and Man Wang

Published online: 03 November 2021

DOI: 10.1140/epjs/s11734-021-00310-x

Biochaos in cardiac rhythms p. 833

Augusto Cheffer and Marcelo A. Savi

Published online: 09 November 2021

DOI: 10.1140/epjs/s11734-021-00314-7

Cardiac reentry modeled by spatiotemporal chaos in a coupled map lattice p. 847

R. V. Stenzinger and M. H. R. Tragtenberg

Published online: 20 February 2022

DOI: 10.1140/epjs/s11734-022-00473-1

Linear and nonlinear analysis of heart rate variability in essential hypertensive patients p. 859

Gerardo Rojas-Vite, Valeria García-Muñoz, Erika E. Rodríguez-Torres and Erik L. Mateos-Salgado

Published online: 14 November 2021

DOI: 10.1140/epjs/s11734-021-00312-9

Design and implementation of arrhythmic ECG signals for biomedical engineering applications on FPGA p. 869

F. Karataş, İ. Koyuncu, M. Tuna, M. Alçın, E. Avcioglu and A. Akgul

Published online: 25 November 2021

DOI: 10.1140/epjs/s11734-021-00334-3

Open Access

Complex behavior of COVID-19’s mathematical model p. 885

Zhen Wang, Sajjad Shaukat Jamal, Baonan Yang and Viet-Thanh Pham

Published online: 17 November 2021

DOI: 10.1140/epjs/s11734-021-00309-4

Open Access

A dynamical map to describe COVID-19 epidemics p. 893

Eduardo V. M. dos Reis and Marcelo A. Savi

Published online: 25 November 2021

DOI: 10.1140/epjs/s11734-021-00340-5

Open Access

A revisit to the past plague epidemic (India) versus the present COVID-19 pandemic: fractional-order chaotic models and fuzzy logic control p. 905

Manashita Borah, Binoy Krishna Roy, Tomasz Kapitaniak, Karthikeyan Rajagopal and Christos Volos

Published online: 12 December 2021

DOI: 10.1140/epjs/s11734-021-00335-2

Suppressing spiral waves with delayed asymmetric bidirectional coupling in a multi-layer biological network p. 921

Karthikeyan Rajagopal, Shirin Panahi, Zahra Shourgashti, Anitha Karthikeyan and Iqtadar Hussain

Published online: 02 February 2022

DOI: 10.1140/epjs/s11734-021-00303-w

A new data-hiding algorithm for multi-channel biomedical signals based on variable-order fractional chaotic neural networks with frequency effect p. 929

Sezgin Kaçar

Published online: 13 November 2021

DOI: 10.1140/epjs/s11734-021-00320-9

Kalman observers in estimating the states of chaotic neurons for image encryption under MQTT for IoT protocol p. 945

Jonathan Daniel Díaz-Muñoz, Israel Cruz-Vega, Esteban Tlelo-Cuautle, Juan Manuel Ramírez Cortés and José de Jesús Rangel-Magdaleno

Published online: 09 November 2021

DOI: 10.1140/epjs/s11734-021-00319-2

Mathematical modeling and bistability analysis for synaptic tagging and synapse-specific long-term facilitation in Aplysia p. 963

Lijie Hao and Zhuoqin Yang

Published online: 27 November 2021

DOI: 10.1140/epjs/s11734-021-00341-4

Nonlinear model predictive control of the chaotic Hindmarsh–Rose biological neuron model with unknown disturbance p. 979

Selcuk Emiroglu

Published online: 24 November 2021

DOI: 10.1140/epjs/s11734-021-00332-5

Bifurcations analysis and experimental study of the dynamics of a thermosensitive neuron conducted simultaneously by photocurrent and thermistance p. 993

Jules Fossi Tagne, Hélène Carole Edima, Zeric Tabekoueng Njitacke, Florent Feudjio Kemwoue, Rose Ngono Mballa and Jacques Atangana

Published online: 22 November 2021

DOI: 10.1140/epjs/s11734-021-00311-w

A memristive RBF neural network and its application in unsupervised medical image segmentation - (EPJ ST Special Issue: Complex Bio Rhythms)* p. 1005

Sicong Liu, Chunbiao Li, Zhenyu Lu, Yongxin Li and Qiang Lai

Published online: 07 March 2022

DOI: 10.1140/epjs/s11734-022-00474-0

Open Access

Various bifurcations in the development of stem cells p. 1015

Lianyu Chen, Ibrahim Ismael Hamarash, Sajad Jafari, Karthikeyan Rajagopal and Iqtadar Hussain

Published online: 13 November 2021

DOI: 10.1140/epjs/s11734-021-00322-7

Fractal dimension-based viability analysis of cancer cell lines in lens-free holographic microscopy via machine learning p. 1023

Muhammed Ali Pala, Murat Erhan Çimen, Akif Akgül, Mustafa Zahid Yıldız and Ali Fuat Boz

Published online: 26 November 2021

DOI: 10.1140/epjs/s11734-021-00342-3

Synchronization of a cluster of -cells based on a small-world network and its electronic experimental verification p. 1035

Ernesto Zambrano-Serrano, Jesus M. Munoz-Pacheco, Andrés Anzo-Hernández, Olga G. Félix-Beltrán and Diana K. Guevara-Flores

Published online: 11 November 2021

DOI: 10.1140/epjs/s11734-021-00307-6

Analysis, FPGA implementation of a Josephson junction circuit with topologically nontrivial barrier and its application to ring-based dual entropy core true random number generator p. 1049

Balamurali Ramakrishnan, Alhadji Abba Oumate, Murat Tuna, İsmail Koyuncu, Sifeu Takougang Kingni and Karthikeyan Rajagopal

Published online: 16 November 2021

DOI: 10.1140/epjs/s11734-021-00324-5

Fractional-order biological system: chaos, multistability and coexisting attractors p. 1061

Nadjette Debbouche, Adel Ouannas, Shaher Momani, Donato Cafagna and Viet-Thanh Pham

Published online: 02 November 2021

DOI: 10.1140/epjs/s11734-021-00308-5

Trajectory tracking-based control of the chaotic behavior in the passive bipedal compass-type robot p. 1071

Essia Added, Hassène Gritli and Safya Belghith

Published online: 09 February 2022

DOI: 10.1140/epjs/s11734-022-00471-3

EPJ

The European Physical Journal Special Topics

Volume 231 / No 5 (June 2022)

Complex Bio Rhythms

Complex Bio Rhythms

Complex bio rhythms p. 815

A machine learning approach to detect aortic valve dysfunction through phase portrait feature extraction p. 819

Strengthen the circadian rhythms by the mathematical model of the SCN p. 827

Biochaos in cardiac rhythms p. 833

Cardiac reentry modeled by spatiotemporal chaos in a coupled map lattice p. 847

Linear and nonlinear analysis of heart rate variability in essential hypertensive patients p. 859

Design and implementation of arrhythmic ECG signals for biomedical engineering applications on FPGA p. 869

Complex behavior of COVID-19’s mathematical model p. 885

A dynamical map to describe COVID-19 epidemics p. 893

A revisit to the past plague epidemic (India) versus the present COVID-19 pandemic: fractional-order chaotic models and fuzzy logic control p. 905

Suppressing spiral waves with delayed asymmetric bidirectional coupling in a multi-layer biological network p. 921

A new data-hiding algorithm for multi-channel biomedical signals based on variable-order fractional chaotic neural networks with frequency effect p. 929

Kalman observers in estimating the states of chaotic neurons for image encryption under MQTT for IoT protocol p. 945

Mathematical modeling and bistability analysis for synaptic tagging and synapse-specific long-term facilitation in Aplysia p. 963

Nonlinear model predictive control of the chaotic Hindmarsh–Rose biological neuron model with unknown disturbance p. 979

Bifurcations analysis and experimental study of the dynamics of a thermosensitive neuron conducted simultaneously by photocurrent and thermistance p. 993

A memristive RBF neural network and its application in unsupervised medical image segmentation - (EPJ ST Special Issue: Complex Bio Rhythms)* p. 1005

Various bifurcations in the development of stem cells p. 1015

Fractal dimension-based viability analysis of cancer cell lines in lens-free holographic microscopy via machine learning p. 1023

Synchronization of a cluster of -cells based on a small-world network and its electronic experimental verification p. 1035

Analysis, FPGA implementation of a Josephson junction circuit with topologically nontrivial barrier and its application to ring-based dual entropy core true random number generator p. 1049

Fractional-order biological system: chaos, multistability and coexisting attractors p. 1061

Trajectory tracking-based control of the chaotic behavior in the passive bipedal compass-type robot p. 1071

Conference announcements

EPJ

The European Physical Journal Special Topics

Volume 231 / No 5 (June 2022)

Complex Bio Rhythms

Complex Bio Rhythms

Complex bio rhythms p. 815

A machine learning approach to detect aortic valve dysfunction through phase portrait feature extraction p. 819

Strengthen the circadian rhythms by the mathematical model of the SCN p. 827

Biochaos in cardiac rhythms p. 833

Cardiac reentry modeled by spatiotemporal chaos in a coupled map lattice p. 847

Linear and nonlinear analysis of heart rate variability in essential hypertensive patients p. 859

Design and implementation of arrhythmic ECG signals for biomedical engineering applications on FPGA p. 869

Complex behavior of COVID-19’s mathematical model p. 885

A dynamical map to describe COVID-19 epidemics p. 893

A revisit to the past plague epidemic (India) versus the present COVID-19 pandemic: fractional-order chaotic models and fuzzy logic control p. 905

Suppressing spiral waves with delayed asymmetric bidirectional coupling in a multi-layer biological network p. 921

A new data-hiding algorithm for multi-channel biomedical signals based on variable-order fractional chaotic neural networks with frequency effect p. 929

Kalman observers in estimating the states of chaotic neurons for image encryption under MQTT for IoT protocol p. 945

Mathematical modeling and bistability analysis for synaptic tagging and synapse-specific long-term facilitation in Aplysia p. 963

Nonlinear model predictive control of the chaotic Hindmarsh–Rose biological neuron model with unknown disturbance p. 979

Bifurcations analysis and experimental study of the dynamics of a thermosensitive neuron conducted simultaneously by photocurrent and thermistance p. 993

A memristive RBF neural network and its application in unsupervised medical image segmentation - (EPJ ST Special Issue: Complex Bio Rhythms)* p. 1005

Various bifurcations in the development of stem cells p. 1015

Fractal dimension-based viability analysis of cancer cell lines in lens-free holographic microscopy via machine learning p. 1023

Synchronization of a cluster of -cells based on a small-world network and its electronic experimental verification p. 1035

Analysis, FPGA implementation of a Josephson junction circuit with topologically nontrivial barrier and its application to ring-based dual entropy core true random number generator p. 1049

Fractional-order biological system: chaos, multistability and coexisting attractors p. 1061

Trajectory tracking-based control of the chaotic behavior in the passive bipedal compass-type robot p. 1071

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Conference announcements