William Lawrence Ditto

Also known as: William L. Ditto; Bill Ditto

Artificial Intelligence, Chaos, Neural Networks, Chaos Computing, Hamiltonian Neural Networks, Machine Learning

Works (170)

Updated: April 15th, 2024 08:54

2023 journal article

Neuronal diversity can improve machine learning for physics and beyond

SCIENTIFIC REPORTS, 13(1).

By: A. Choudhary n, A. Radhakrishnan n, J. Lindner n, S. Sinha* & W. Ditto n

Sources: Web Of Science, NC State University Libraries
Added: April 8, 2024

2023 journal article

Solving quantum billiard eigenvalue problems with physics-informed machine learning

AIP ADVANCES, 13(8).

By: E. Holliday n, J. Lindner n & W. Ditto n

TL;DR: This work generalizes an unsupervised learning algorithm to find the particles’ eigenvalues and eigenfunctions, even in cases where the eigen values are degenerate, including particles confined to rectangle-, ellipse-, triangle-, and cardioid-shaped boxes. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 28, 2023

2022 journal article

Reconfigurable Noise-Assisted Logic Gates Exploiting Nonlinear Transformation of Input Signals

PHYSICAL REVIEW APPLIED, 18(1).

By: K. Murali*, W. Ditto n & S. Sinha*

Sources: ORCID, Web Of Science, NC State University Libraries
Added: July 26, 2022

2021 journal article

Construction of logic gates exploiting resonance phenomena in nonlinear systems

By: K. Murali*, S. Rajasekar*, M. Aravind*, V. Kohar*, W. Ditto n & S. Sinha*

author keywords: stochastic resonance; logical stochastic resonance; noisy logic
TL;DR: The conventional LSR paradigm is extended to implement higher-level logic architecture or typical digital electronic structures via carefully crafted coupling schemes and to realize morphable logic gates through the Logical Coherence Resonance in excitable systems under the influence of noise. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: February 15, 2021

2021 journal article

Forecasting Hamiltonian dynamics without canonical coordinates

NONLINEAR DYNAMICS, 103(2), 1553–1562.

By: A. Choudhary n, J. Lindner n, E. Holliday n, S. Miller n, S. Sinha n & W. Ditto n

author keywords: Neural networks; Hamiltonian dynamics; Canonical coordinates; Time series forecasting
TL;DR: This work prepend a conventional neural network to a Hamiltonian neural network and shows that the combination accurately forecasts Hamiltonian dynamics from generalised noncanonical coordinates. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: February 8, 2021

2021 journal article

Harnessing tipping points for logic operations

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 230(16-17), 3403–3409.

By: K. Murali*, S. Sinha*, V. Kohar* & W. Ditto n

TL;DR: The presence of tipping points in complex systems endows it with the capability to switch between very different attractors under small changes in parameter, and this feature can be exploited to obtain reliable logic operations. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: April 19, 2021

2021 journal article

Negotiating the separatrix with machine learning

IEICE NONLINEAR THEORY AND ITS APPLICATIONS, 12(2), 134–142.

By: S. Miller n, J. Lindner n, A. Choudhary n, S. Sinha* & W. Ditto n

author keywords: machine learning; neural networks; Hamiltonian dynamics
TL;DR: This work uses the framework of Hamiltonian Neural Networks (HNN) to learn the complex dynamics of nonlinear single and double pendulums, which can both librate and rotate, by mapping the unbounded phase space onto a compact cylinder. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 1, 2021

2020 article

Closing editorial: Forecasting of epidemic spreading: lessons learned from the current covid-19 pandemic

Boccaletti, S., Mindlin, G., Ditto, W., & Atangana, A. (2020, October). CHAOS SOLITONS & FRACTALS, Vol. 139.

By: S. Boccaletti*, G. Mindlin*, W. Ditto* & A. Atangana*

Sources: Web Of Science, NC State University Libraries
Added: December 11, 2020

2020 journal article

Nonlinear dynamics based machine learning: Utilizing dynamics-based flexibility of nonlinear circuits to implement different functions

PLoS ONE, 15(3), e0228534.

By: B. Kia n, A. Mendes n, A. Parnami n, R. George n, K. Mobley* & W. Ditto n

Ed(s): A. Adamatzky

MeSH headings : Machine Learning; Nonlinear Dynamics
TL;DR: This research focuses on nonlinear complex systems, and combines two powerful natural and biological phenomenon, Darwinian evolution and nonlinear dynamics and chaos, as a dynamics-oriented approach to designing intelligent, adaptive systems with applications. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: March 4, 2020

2020 journal article

Physics-enhanced neural networks learn order and chaos

Physical Review E, 101(6), 062207.

By: A. Choudhary n, J. Lindner n, E. Holliday n, S. Miller n, S. Sinha n & W. Ditto n

TL;DR: This work uses neural networks that incorporate Hamiltonian dynamics to efficiently learn phase space orbits even as nonlinear systems transition from order to chaos. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: June 19, 2020

2018 journal article

Chaotic attractor hopping yields logic operations

PLOS ONE, 13(12).

By: K. Murali*, S. Sinha*, V. Kohar n, B. Kia n & W. Ditto n

Ed(s): A. Adamatzky

MeSH headings : Electronics; Fuzzy Logic; Nonlinear Dynamics
TL;DR: This work explicitly demonstrates that the system hops consistently in response to an external input stream, operating effectively as a reliable logic gate, and leads to a generalization of the concept of Logical Stochastic Resonance to attractors more complex than fixed point states, such as periodic or chaotic attractors. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 14, 2019

2017 journal article

An Integrated Circuit Design for a Dynamics-Based Reconfigurable Logic Block

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 64(6), 715–719.

By: B. Kia n, K. Mobley* & W. Ditto n

author keywords: Chaos; computation; integrated circuit; nonlinear dynamical systems theory; programmable logic block
TL;DR: A nonlinear integrated circuit to harvest different types of digital computation from complex dynamics is designed and fabricated and can be dynamically reconfigured to implement different two-input, one-output digital functions. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Detecting and characterizing high-frequency oscillations in epilepsy: a case study of big data analysis

Royal Society Open Science, 4(1), 160741.

By: L. Huang*, X. Ni*, W. Ditto n, M. Spano*, P. Carney* & Y. Lai*

author keywords: nonlinear dynamics; electroencephalogram; epileptic seizures; empirical mode; decomposition; big data analysis; high-frequency oscillations
TL;DR: A framework to uncover and analyse dynamical anomalies from massive, nonlinear and non-stationary time series data is developed and a striking phenomenon is found: HFOs exhibit on–off intermittency that can be quantified by algebraic scaling laws. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 14, 2020

2017 journal article

Dynamical coupling outperforms "majority wins" in organizing redundancy to mitigate noise

NONLINEAR DYNAMICS, 87(1), 605–615.

By: B. Kia n, J. Lindner* & W. Ditto n

author keywords: Dynamics; Coupling; Noise; Chaos
TL;DR: It is demonstrated that a well-designed, optimized DC has better performance in reducing error and can be implemented with minimal overhead or extra computational complexity for organizing redundancy to achieve noise robustness. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 journal article

Implementing Boolean Functions in Hybrid Digital-Analog Systems

PHYSICAL REVIEW APPLIED, 7(4).

By: V. Kohar n, B. Kia n, J. Lindner* & W. Ditto n

TL;DR: In an ideal nonlinear map, this architecture eliminates the need for a decoder as the outputs are mapped to maxima and minima of the map and can be fed directly to the next stage enabling multilayer concatenation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2017 conference paper

Nonlinear dynamics and chaos for fleixble, reconfigurable computing

2017 IEEE International Conference on Rebooting Computing (ICRC), 282–289.

By: B. Kia n & W. Ditto n

TL;DR: A recently fabricated VLSI chip for nonlinear dynamics-based computing was shown to be capable of implementing a new function in each clock cycle, with no need for separate reprograming time in between clock cycles. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 journal article

Nonlinear dynamics as an engine of computation

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 375(2088), 20160222.

By: B. Kia n, J. Lindner* & W. Ditto n

author keywords: cybernetical physics; nonlinear dynamics; computation
TL;DR: This article introduces nonlinear dynamics and its rich, sometimes chaotic behaviour as an engine of computation and investigates the interrelationship between invariant measures of a dynamical system and its computing power to strengthen the bridge between physics and computation. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2017 conference paper

Nonlinear dynamics-based adaptive hardware

2017 nasa/esa conference on adaptive hardware and systems (ahs), 200–205.

By: B. Kia n, A. Parnami n, A. Mendes n & W. Ditto n

TL;DR: Results of an experimental study are reported on an integrated circuit fabricated for nonlinear dynamics-based computing, where the circuit was overheated to a point that its operation and performance changed, but then reprogramed the circuit so that the overheated circuit could again perform the same operations reliably. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2017 chapter

Present and the Future of Chaos Computing

In Lecture Notes in Networks and Systems (pp. 101–109).

By: B. Kia n, V. Kohar n & W. Ditto n

TL;DR: This work studies chaos computing as a new approach for reconfigurable computing and presents some of the latest results and discusses what this new direction to computing means and implies. (via Semantic Scholar)
Source: Crossref
Added: January 14, 2020

2017 conference paper

Present and the future of chaos computing

Proceedings of the 4th international conference on applications in nonlinear dynamics (icand 2016), 6, 101–109.

By: B. Kia, V. Kohar & W. Ditto

Source: NC State University Libraries
Added: August 6, 2018

2017 chapter

Spectral Scaling Analysis of RR Lyrae Stars in OGLE-IV Galactic Bulge Fields

In Lecture Notes in Networks and Systems (pp. 65–76).

By: V. Kohar n, J. Lindner*, B. Kia n & W. Ditto n

Source: Crossref
Added: January 14, 2020

2017 conference paper

Spectral scaling analysis of RR Lyrae stars in OGLE-IV Galactic Bulge Fields

Proceedings of the 4th international conference on applications in nonlinear dynamics (icand 2016), 6, 65–76.

By: V. Kohar, J. Lindner, B. Kia & W. Ditto

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

A Simple Nonlinear Circuit Contains an Infinite Number of Functions

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 63(10), 944–948.

By: B. Kia n, J. Lindner* & W. Ditto n

author keywords: Chaos theory; computation; infinitelymany functions; nonlinear circuit
TL;DR: This brief shows that the number of different functions that a nonlinear or chaotic circuit can implement exponentially increases as the circuit evolves in time, and this exponential increase is quantified with an exponent that is named the computing exponent. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Reduction of Additive Colored Noise Using Coupled Dynamics

International Journal of Bifurcation and Chaos, 26(01), 1650005.

By: V. Kohar*, B. Kia*, J. Lindner* & W. Ditto*

author keywords: Coupled map lattice; colored noise; 1/f(alpha) noise; Ornstein-Uhlenbeck process; chaos computing
TL;DR: The effect of colored noise in chaos computing is examined and it is found that coupling the chaos computing elements enhances the robustness of chaos computing. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 5, 2020

2016 journal article

Role of network topology in noise reduction using coupled dynamics

NONLINEAR DYNAMICS, 84(3), 1805–1812.

By: V. Kohar n, S. Kia n, B. Kia n, J. Lindner* & W. Ditto n

Contributors: V. Kohar n, S. Kia n, B. Kia n, J. Lindner* & W. Ditto n

author keywords: Network; Topology; Noise; Coupled map lattices; Coupled dynamics
TL;DR: The usefulness of coupled redundancy as a mechanism for reduction in local noise in coupled map lattices is studied and the role of network topology, coupling strength, and iteration number in this mechanism is investigated. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Simple nonlinear models suggest variable star universality

Physica D: Nonlinear Phenomena, 316, 16–22.

By: J. Lindner*, V. Kohar*, B. Kia*, M. Hippke, J. Learned* & W. Ditto*

Contributors: J. Lindner*, V. Kohar*, B. Kia*, M. Hippke, J. Learned* & W. Ditto*

author keywords: Nonlinear dynamics; Variable stars; Golden ratio; Universality
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2016 journal article

Superlinearly scalable noise robustness of redundant coupled dynamical systems

PHYSICAL REVIEW E, 93(3).

By: V. Kohar n, B. Kia n, J. Lindner* & W. Ditto n

TL;DR: It is demonstrated that the noise robustness of redundant coupled dynamical systems can actually be scaled superlinearly if some conditions are met and very high Noise robustness can be realized with very few coupled units. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Coupling reduces noise: Applying dynamical coupling to reduce local white additive noise

International Journal of Bifurcation and Chaos, 25(3).

By: B. Kia*, S. Kia*, J. Lindner*, S. Sinha* & W. Ditto*

Contributors: B. Kia*, S. Kia*, J. Lindner*, S. Sinha* & W. Ditto*

author keywords: Coupled map lattice; noise; nonlinear systems
TL;DR: It is demonstrated how coupling nonlinear dynamical systems can reduce the effects of noise and developed a theoretical model that explains this observed noise evolution and shows how the coupled dynamics can naturally function as an averaging filter. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2015 journal article

Exploiting chaos for applications

Chaos: An Interdisciplinary Journal of Nonlinear Science, 25(9), 097615.

By: W. Ditto* & S. Sinha*

Contributors: W. Ditto* & S. Sinha*

TL;DR: An illustrative research arc is presented, starting with ideas of control, based on the general understanding of chaos, moving over to applications that influence the course of building better devices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2015 journal article

Nonlinear dynamics based digital logic and circuits

Frontiers in Computational Neuroscience, 9(MAY).

By: B. Kia*, J. Lindner* & W. Ditto*

Contributors: B. Kia*, J. Lindner* & W. Ditto*

author keywords: Boolean logic; nonlinear dynamics; dynamics based computing; noise robustness; dynamical coupling; chaos computing; ternary logic gate; multiple-valued logic circuits
TL;DR: For the first time, it is shown how dynamics can be used and programmed to implement computation in any given base, including but not limited to base two. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2015 journal article

Strange nonchaotic stars

Physical Review Letters, 114(5).

By: J. Lindner*, V. Kohar*, B. Kia*, M. Hippke, J. Learned* & W. Ditto*

Contributors: J. Lindner*, V. Kohar*, B. Kia*, M. Hippke, J. Learned* & W. Ditto*

TL;DR: Evidence of the first observation of strange nonchaotic dynamics in nature outside the laboratory is presented, which could aid the classification and detailed modeling of variable stars. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2014 chapter

Logic from Dynamics

In H. Leung (Ed.), Chaotic Signal Processing (pp. 102–127). Beijing: Higher Education Press.

By: W. Ditto, A. Miliotis, K. Murali & S. Sinha

Ed(s): H. Leung

Source: NC State University Libraries
Added: January 29, 2021

2014 journal article

Noise tolerant spatiotemporal chaos computing

Chaos: An Interdisciplinary Journal of Nonlinear Science, 24(4), 043110.

By: B. Kia*, S. Kia*, J. Lindner*, S. Sinha* & W. Ditto*

Contributors: B. Kia*, S. Kia*, J. Lindner*, S. Sinha* & W. Ditto*

TL;DR: This work introduces and design a noise tolerant chaos computing system based on a coupled map lattice and the noise reduction capabilities inherent in coupled dynamical systems, which is more robust to noise than a single map chaos Computing system. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2014 journal article

Pulsation Period Variations in the RRc Lyrae Star KIC 5520878

The Astrophysical Journal, 798(1), 42.

By: M. Hippke, J. Learned*, A. Zee*, W. Edmondson*, J. Lindner*, B. Kia*, W. Ditto*, I. Stevens*

Contributors: M. Hippke, J. Learned*, A. Zee*, W. Edmondson*, J. Lindner*, B. Kia*, W. Ditto*, I. Stevens*

author keywords: stars: variables: Cepheids; stars: variables: RR Lyrae
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2014 chapter

Synthetic Computation: Chaos Computing, Logical Stochastic Resonance, and Adaptive Computing

In V. A. Palacios & P. Longhini (Eds.), International Conference on Theory and Application in Nonlinear Dynamics (ICAND 2012). Understanding Complex Systems (pp. 51–65).

By: B. Kia*, K. Murali*, M. Jahed Motlagh*, S. Sinha* & W. Ditto*

Ed(s): V. Palacios & P. Longhini

TL;DR: This paper demonstrates how a chaotic system can be engineered and mated with different machine learning techniques, such as artificial neural networks, random searching, and genetic algorithm, to design different autonomous systems that can adapt and respond to environmental conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: October 29, 2020

2014 journal article

Watch your step: Integrating nonlinear dynamical flows by stepping through space and time

International Journal of Bifurcation and Chaos, 24(11).

By: B. Kia*, J. Lindner* & W. Ditto*

Contributors: B. Kia*, J. Lindner* & W. Ditto*

author keywords: Nonlinear flows; numerical integration; spacetime; time; arc length
TL;DR: A unified framework for numerical integration of differential equations based on advancing either the dependent variable, often space, or the independent variable, or any combination of the two, to produce better numerical results and also more faithfully describe the underlying physics. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2013 journal article

Phase shift in the 24-hour rhythm of hippocampal EEG spiking activity in a rat model of temporal lobe epilepsy

Journal of Neurophysiology, 110(5), 1070–1086.

By: D. Stanley*, S. Talathi*, M. Parekh*, D. Cordiner*, J. Zhou*, T. Mareci*, W. Ditto*, P. Carney*

Contributors: D. Stanley*, S. Talathi*, M. Parekh*, D. Cordiner*, J. Zhou*, T. Mareci*, W. Ditto*, P. Carney*

author keywords: circadian input; epilepsy; hippocampus; MRI; mathematical model; in vivo; status epilepticus; medial septum; sharp wave
MeSH headings : Animals; Circadian Rhythm; Disease Models, Animal; Electroencephalography; Epilepsy, Temporal Lobe / physiopathology; Hippocampus / physiopathology; Male; Rats; Rats, Sprague-Dawley; Septum of Brain / pathology; Theta Rhythm; Time Factors
TL;DR: It is suggested that balanced circadian input is critical to maintaining natural circadian phase in the hippocampus and that damage to circadian relay centers, such as the medial septum, may disrupt this balance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 journal article

Chaos computing in terms of periodic orbits

Physical Review E, 84(3).

By: B. Kia*, M. Spano* & W. Ditto*

Contributors: B. Kia*, M. Spano* & W. Ditto*

MeSH headings : Nonlinear Dynamics; Normal Distribution; Periodicity
TL;DR: Knowing the dynamical equations of the system, the paper compute the system's periodic orbits as well as its stability in terms of its eigenvalues, thereby demonstrating how, how well, and what the chaotic system can compute. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 chapter

Chaos for Speech Coding and Production

In Advances in Nonlinear Speech Processing: Vol. 7015 LNAI (pp. 270–278).

By: B. Kia*, W. Ditto* & M. Spano*

Contributors: B. Kia*, W. Ditto* & M. Spano*

TL;DR: The presence of nonlinearity and chaotic behavior in the human speech production system has been reported previously, but chaotic dynamics has not been widely exploited in speech coding and artificial speech production algorithms. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 chapter

Circadian Regulation of Neural Excitability in Temporal Lobe Epilepsy

In Epilepsy (pp. 289–306).

By: P. Carney, S. Talathi, D. Hwang & W. Ditto

TL;DR: The results suggest that the acutely induced seizures perturb the phase relationship of SW activity within the CA1 region with respect to the circadian rhythm, which appears to produce an imbalance in the firing dynamics, eventually leading to spontaneous epileptic limbic seizures. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 5, 2020

2011 journal article

Creating morphable logic gates using logical stochastic resonance in an engineered gene network

EPL (Europhysics Letters), 93(1), 18001.

By: A. Dari*, B. Kia*, A. Bulsara* & W. Ditto*

Contributors: A. Dari*, B. Kia*, A. Bulsara* & W. Ditto*

Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 journal article

Logical stochastic resonance with correlated internal and external noises in a synthetic biological logic block

Chaos: An Interdisciplinary Journal of Nonlinear Science, 21(4), 047521.

By: A. Dari*, B. Kia*, A. Bulsara* & W. Ditto*

Contributors: A. Dari*, B. Kia*, A. Bulsara* & W. Ditto*

MeSH headings : Bacteriophage lambda / genetics; Computer Simulation; Gene Expression Regulation, Viral / genetics; Logistic Models; Models, Biological; Nonlinear Dynamics; Signal Transduction / genetics; Stochastic Processes; Viral Proteins / genetics
TL;DR: The intriguing results of this study show that it is possible to build a biological logic block that can emulate or switch from the AND to the OR gate functionalities through externally tuning the system parameters, and are underpinned by the presence of an optimal amount of random fluctuations. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 conference paper

Noise enhanced logic gates

AIP Conference Proceedings, 1339, 67–77.

By: K. Murali*, S. Sinha*, A. Bulsara*, A. Dari* & W. Ditto*

Contributors: K. Murali*, S. Sinha*, A. Bulsara*, A. Dari* & W. Ditto*

author keywords: Logic Gates
TL;DR: This concept of noise enhanced logic gate performance under optimal noise was called Logical Stochastic Resonance (LSR) and the extension of this approach to realize logic gates with Coherence Resonance Systems (LCR). (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2011 journal article

Noise-aided computation within a synthetic gene network through morphable and robust logic gates

Physical Review E, 83(4), 041909.

By: A. Dari*, B. Kia*, X. Wang*, A. Bulsara* & W. Ditto*

Contributors: A. Dari*, B. Kia*, X. Wang*, A. Bulsara* & W. Ditto*

MeSH headings : Computer Simulation; Computers, Molecular; Gene Expression Regulation / physiology; Models, Genetic; Proteins / metabolism; Signal Processing, Computer-Assisted / instrumentation; Signal Transduction / physiology
TL;DR: A synthetic gene network derived from the bacteriophage λ underpins a reconfigurable logic gate wherein the logic gate can emulate or "morph" the AND and OR operations through varying internal system parameters in a noisy background. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 conference paper

Reprogrammable biological logic gate that exploits noise

2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011, 337–340.

By: A. Dari*, A. Bulsara*, W. Ditto* & X. Wang*

Contributors: A. Dari*, A. Bulsara*, W. Ditto* & X. Wang*

TL;DR: The possibility to exploit noise when it cannot be eliminated is demonstrated and the LSR paradigm is adapted to a single-gene network derived from the bacteriophage λ and from the yeast S. cerevisiae, demonstrating that in both cases there is an optimal amount of noise. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2011 journal article

Stochastic amplification of calcium-activated potassium currents in Ca2+ microdomains

Journal of Computational Neuroscience, 31(3), 647–666.

By: D. Stanley*, B. Bardakjian*, M. Spano* & W. Ditto*

Contributors: D. Stanley*, B. Bardakjian*, M. Spano* & W. Ditto*

author keywords: Stochastic; Calcium-activated potassium; SK2; Microdomain; Noise; Hill coefficient; Subthreshold
MeSH headings : Animals; Calcium Signaling / physiology; Hippocampus / physiology; Humans; Ion Channel Gating / physiology; Membrane Microdomains / physiology; Models, Neurological; Neurons / physiology; Small-Conductance Calcium-Activated Potassium Channels / physiology; Stochastic Processes
TL;DR: Stochastic amplification can potentially explain subthreshold SK2 activation in unified models of both sub- and suprathreshold regimes and is expected to be a general phenomenon relevant to many proteins that are activated nonlinearly by stochastic ligand release. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2011 journal article

Unstable periodic orbits and noise in chaos computing

Chaos: An Interdisciplinary Journal of Nonlinear Science, 21(4), 047520.

By: B. Kia*, A. Dari*, W. Ditto* & M. Spano*

Contributors: B. Kia*, A. Dari*, W. Ditto* & M. Spano*

MeSH headings : Computer Simulation; Models, Statistical; Nonlinear Dynamics
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

A Noise-Assisted Reprogrammable Nanomechanical Logic Gate

Nano Letters, 10(4), 1168–1171.

By: D. Guerra*, A. Bulsara*, W. Ditto*, S. Sinha*, K. Murali* & P. Mohanty*

Contributors: D. Guerra*, A. Bulsara*, W. Ditto*, S. Sinha*, K. Murali* & P. Mohanty*

author keywords: Nanomechanical logic; nanomechanical computing; logical stochastic resonance; stochastic resonance; nanomechanical resonator
MeSH headings : Electrodes; Logic; Nanotechnology / instrumentation; Nanotechnology / methods; Silicon / chemistry
TL;DR: A nanomechanical device, operating as a reprogrammable logic gate, and performing fundamental logic functions such as AND/OR and NAND/NOR, affords a path to the practical realization of a new generation of mechanical computers. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Chaogates: Morphing logic gates that exploit dynamical patterns

Chaos: An Interdisciplinary Journal of Nonlinear Science, 20(3), 037107.

By: W. Ditto*, A. Miliotis*, K. Murali*, S. Sinha* & M. Spano

Contributors: W. Ditto*, A. Miliotis*, K. Murali*, S. Sinha* & M. Spano

author keywords: chaos; logic gates; nonlinear dynamical systems
MeSH headings : Logic; Nonlinear Dynamics
TL;DR: The basic concepts underlying chaotic systems are reviewed and an extension of the formalism to include asymmetric logic functions is presented, which forms the basis of the design of a dynamical computing device that can be rapidly morphed to become any desired logic gate. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Effects of phase on homeostatic spike rates

Biological Cybernetics, 102(5), 427–440.

By: N. Fisher*, S. Talathi*, P. Carney* & W. Ditto*

Contributors: N. Fisher*, S. Talathi*, P. Carney* & W. Ditto*

author keywords: Homeostatic synaptic plasticity; Phase; Epilepsy; Spike rate
MeSH headings : Action Potentials / physiology; Animals; Homeostasis; Models, Neurological; Neuronal Plasticity / physiology; Neurons / physiology; Periodicity
TL;DR: Exitatory neurons, particularly those in which the excitatory neuron is presynaptic, have the most influence in producing the diverging spike rates and causing the spike rates to be anti-phase, which suggests that theexcitatory neuronal population could be implicated in a methodology designed to control epileptic seizures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Granger causality relationships between local field potentials in an animal model of temporal lobe epilepsy

Journal of Neuroscience Methods, 189(1), 121–129.

By: A. Cadotte*, T. DeMarse*, T. Mareci*, M. Parekh*, S. Talathi*, D. Hwang*, W. Ditto*, M. Ding*, P. Carney*

Contributors: A. Cadotte*, T. DeMarse*, T. Mareci*, M. Parekh*, S. Talathi*, D. Hwang*, W. Ditto*, M. Ding*, P. Carney*

author keywords: Granger causality; Temporal lobe epilepsy; Seizure; Animal model of epilepsy; Functional connectivity; Effective connectivity; Magnetic Resonance Imaging (MRI); Histology; Microelectrode array
MeSH headings : Action Potentials / physiology; Algorithms; Animals; Causality; Disease Models, Animal; Electrophysiology / methods; Epilepsy, Temporal Lobe / physiopathology; Evoked Potentials / physiology; Hippocampus / anatomy & histology; Hippocampus / physiopathology; Male; Microelectrodes; Neural Pathways / anatomy & histology; Neural Pathways / physiology; Neurons / physiology; Neurophysiology / methods; Rats; Rats, Sprague-Dawley; Seizures / physiopathology; Signal Processing, Computer-Assisted; Time Factors
TL;DR: This study uses Granger causality to determine the strength and direction of relationships between local field potentials recorded from bilateral microelectrode arrays in an intermittent spontaneous seizure model of chronic temporal lobe epilepsy and suggests a reversal in the direction of GC relationships during seizure. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Introduction to Focus Issue: Intrinsic and Designed Computation: Information Processing in Dynamical Systems—Beyond the Digital Hegemony

Chaos: An Interdisciplinary Journal of Nonlinear Science, 20(3), 037101.

By: J. Crutchfield*, W. Ditto* & S. Sinha*

Contributors: J. Crutchfield*, W. Ditto* & S. Sinha*

author keywords: information theory; nonlinear dynamical systems
TL;DR: The broad and rather eclectic set of articles in this Focus Issue that highlights a range of current challenges in computing and dynamical systems are introduced. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Logical stochastic resonance

Chemical Physics, 375(2-3), 424–434.

By: A. Bulsara*, A. Dari*, W. Ditto*, K. Murali* & S. Sinha*

Contributors: A. Bulsara*, A. Dari*, W. Ditto*, K. Murali* & S. Sinha*

author keywords: Logic gates; Stochastic resonance
TL;DR: The concept of "Logical Stochastic Resonance" (LSR) is reviewed and details of an electronic circuit system demonstrating LSR are provided, including CMOS implementations of a simple LSR circuit, and the concatenation of these LSR modules to emulate combinational logic, such as data flip-flop and full adder operations. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Support vector machines for seizure detection in an animal model of chronic epilepsy

Journal of Neural Engineering, 7(3), 036001.

By: M. Nandan*, S. Talathi*, S. Myers*, W. Ditto*, P. Khargonekar* & P. Carney*

Contributors: M. Nandan*, S. Talathi*, S. Myers*, W. Ditto*, P. Khargonekar* & P. Carney*

MeSH headings : Algorithms; Animals; Artificial Intelligence; Brain / physiopathology; Chronic Disease; Diagnosis, Computer-Assisted / methods; Electroencephalography / methods; Epilepsy / diagnosis; Epilepsy / physiopathology; Humans; Pattern Recognition, Automated / methods; Rats; Rats, Sprague-Dawley; Reproducibility of Results; Sensitivity and Specificity
TL;DR: It is found that SVDD not only performed better than the other SVM types in terms of highest value of the mean optimality index metric () but also gave a more reliable performance across the two EEG datasets. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 journal article

Synchrony with shunting inhibition in a feedforward inhibitory network

Journal of Computational Neuroscience, 28(2), 305–321.

By: S. Talathi*, D. Hwang*, P. Carney* & W. Ditto*

Contributors: S. Talathi*, D. Hwang*, P. Carney* & W. Ditto*

author keywords: Synchrony; Shunting inhibition; Spike time response curve; Arnold tongue; Feed forward network
MeSH headings : Action Potentials / physiology; Biological Clocks / physiology; Brain / physiology; Computer Simulation; Interneurons / physiology; Membrane Potentials / physiology; Models, Neurological; Nerve Net / physiology; Neural Inhibition / physiology; Synapses / physiology; Synaptic Transmission / physiology
TL;DR: A general theoretical framework using spike time response curves (STRC’s) to study patterns of synchrony in a simple network of two unidirectionally coupled interneurons interacting through a shunting synapse is developed and an approximate discrete map is derived to analyze the dynamics of synchronous states in the UCI network by taking into account the nonlinear contributions of the higher order STRC terms. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2010 chapter

The Chaos Computing Paradigm

In Reviews of Nonlinear Dynamics and Complexity (Vol. 3, pp. 1–35).

By: W. Ditto*, A. Miliotis*, K. Murali* & S. Sinha*

Contributors: W. Ditto*, A. Miliotis*, K. Murali* & S. Sinha*

Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2009 journal article

A simple nonlinear dynamical computing device

Chaos, Solitons and Fractals, 42(2), 809–819.

By: A. Miliotis, K. Murali, S. Sinha, W. Ditto* & M. Spano

Contributors: A. Miliotis, K. Murali, S. Sinha, W. Ditto* & M. Spano

TL;DR: An iterated map whose nonlinearity has a simple (i.e., minimal) electronic implementation is proposed and characterized, and it is demonstrated explicitly how all the different fundamental logic gates can be implemented and morphed using this non linearity. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2009 journal article

Analysis of high-resolution microelectrode EEG recordings in an animal model of spontaneous lmbic seizures

International Journal of Bifurcation and Chaos, 19(2), 605–617.

By: C. Komalapriya*, M. Romano*, M. Thiel*, U. Schwarz*, J. Kurths*, J. Simonotto*, M. Furman*, W. Ditto*, P. Carney*

Contributors: C. Komalapriya*, M. Romano*, M. Thiel*, U. Schwarz*, J. Kurths*, J. Simonotto*, M. Furman*, W. Ditto*, P. Carney*

author keywords: Multiarray microelectrode; EEG recordings; RQA; RTS
TL;DR: Results of spectral analysis confirm the importance of very high frequency oscillations in normal (healthy) and abnormal (epileptic) hippocampus and show that the measures of Recurrence Quantification Analysis (RQA) and Recurrence Time Statistics (RTS) are successful in indicating the onset of ictal state and the occurrence of some warnings/precursors during the pre-ictalState. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2009 journal article

Circadian control of neural excitability in an animal model of temporal lobe epilepsy

Neuroscience Letters, 455(2), 145–149.

By: S. Talathi*, D. Hwang*, W. Ditto*, T. Mareci*, H. Sepulveda*, M. Spano, P. Carney*

Contributors: S. Talathi*, D. Hwang*, W. Ditto*, T. Mareci*, H. Sepulveda*, M. Spano, P. Carney*

author keywords: Circadian rhythm; Epilepsy; Epileptogenesis; Latent period; Imbalance; Population spikes
MeSH headings : Animals; Circadian Rhythm / physiology; Electrodes, Implanted; Electrophysiology; Epilepsy, Temporal Lobe / physiopathology; Hippocampus / physiology; Male; Microelectrodes; Models, Neurological; Neurons / physiology; Rats; Rats, Sprague-Dawley
TL;DR: Experimental evidence is provided for the emerging imbalance in the firing activity of two distinct classes of population spikes recorded from the hippocampal area CA1 in an animal model of temporal lobe epilepsy and for the interaction between firing activities of populations of excitatory and inhibitory neurons. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: ORCID
Added: December 30, 2019

2009 book

Construction of a chaotic computer chip

In Understanding Complex Systems (Vol. 2009, pp. 3–13).

By: W. Ditto* & S. Sinha

Contributors: W. Ditto* & S. Sinha

TL;DR: It is hoped that the construction and commercialization of the ChaoLogixTM chaotic computer chip will enable the flexibility of field programmable gate arrays (FPGA), the optimization and speed of application specific integrated circuits (ASIC) and the general utility of a central processing unit (CPU) within the same computer chip architecture. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: ORCID
Added: December 30, 2019

2009 journal article

Logic from nonlinear dynamical evolution

Physics Letters, Section A: General, Atomic and Solid State Physics, 373(15), 1346–1351.

By: K. Murali*, A. Miliotis*, W. Ditto* & S. Sinha*

Contributors: K. Murali*, A. Miliotis*, W. Ditto* & S. Sinha*

author keywords: Chaotic systems; Digital logic; Computing with chaos
TL;DR: This work proposes a direct and flexible implementation of logic operations using the dynamical evolution of a nonlinear system, and demonstrates how the single dynamical system can do more complex operations such as bit-by-bit addition in just a few iterations. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2009 journal article

Predicting synchrony in heterogeneous pulse coupled oscillators

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 80(2).

By: S. Talathi*, D. Hwang*, A. Miliotis*, P. Carney* & W. Ditto*

Contributors: S. Talathi*, D. Hwang*, A. Miliotis*, P. Carney* & W. Ditto*

author keywords: neurophysiology; physiological models
MeSH headings : Models, Neurological; Neurons / cytology; Nonlinear Dynamics; Synapses / metabolism
TL;DR: A general theory is presented that extends beyond the weak-coupling approximation to account for higher-order PRC corrections in the derivation of an approximate discrete map, the stable fixed point of which can predict the domain of 1:1 phase locked synchronous states generated by the PCO network. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2009 chapter

Quantitative Sleep Monitoring

In S. Tong & N. V. Thakor (Eds.), Quantitative EEG Analysis Methods and Applications. Norwood, MA, USA: Artech House, Inc.

By: P. Carney, N. Fisher, W. Ditto & J. Geyer

Ed(s): S. Tong & N. Thakor

Source: NC State University Libraries
Added: January 29, 2021

2009 journal article

Realization of reliable and flexible logic gates using noisy nonlinear circuits

Applied Physics Letters, 95(19), 194102.

By: K. Murali*, I. Rajamohamed*, S. Sinha*, W. Ditto* & A. Bulsara*

Contributors: K. Murali*, I. Rajamohamed*, S. Sinha*, W. Ditto* & A. Bulsara*

Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

2009 journal article

Reconfigurable logic blocks based on a chaotic Chua circuit

Chaos, Solitons & Fractals, 41(1), 233–244.

By: H. Pourshaghaghi, B. Kia*, W. Ditto* & M. Jahed-Motlagh

Contributors: H. Pourshaghaghi, B. Kia*, W. Ditto* & M. Jahed-Motlagh

TL;DR: A method is formed that demonstrates that the chaotic saddles of the inherent chaotic dynamics can be exploited to enhance the robustness of the logic functions with respect to noise. (via Semantic Scholar)
Sources: ORCID, Crossref
Added: December 30, 2019

2009 journal article

Reliable logic circuit elements that exploit nonlinearity in the presence of a noise floor

Physical Review Letters, 102(10).

By: K. Murali*, S. Sinha*, W. Ditto* & A. Bulsara*

Contributors: K. Murali*, S. Sinha*, W. Ditto* & A. Bulsara*

TL;DR: It is shown that when one presents two square waves as input to a two-state system, the response of the system can produce a logical output with a probability controlled by the noise intensity, which is a "logical stochastic resonance". (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2009 journal article

Robust control of spatiotemporal chaos in coupled map lattices

International Journal of Bifurcation and Chaos, 19(6), 2031–2042.

By: Z. Rahmani, M. Motlagh* & W. Ditto*

Contributors: Z. Rahmani, M. Motlagh* & W. Ditto*

author keywords: Complex system; spatiotemporal chaos; coupled map lattices; quasi sliding mode control; Lyapunov function; stability; tracking; attractiveness; invariant band; additive uncertainties
TL;DR: A new method based on quasi-sliding mode using a Lyapunov function that enables the system to drive the chaotic motion toward any desired trajectory via a sliding surface in the error space through its robustness with respect to additive uncertainties and its applicability for all types of coupled map lattices. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2009 chapter

Seizure Detection and Monitoring

In L. J. Greenfield, J. D. Geyer, & P. R. Carney (Eds.), Reading EEGs: A Practical Approach (1st ed.). Philadelphia: Lippincott-Williams & Wilkins, Inc.

By: N. Fisher, S. Talathi, A. Cadotte, S. Myers, W. Ditto, J. Geyer, P. Carney

Ed(s): L. Greenfield, J. Geyer & P. Carney

Source: NC State University Libraries
Added: January 29, 2021

2009 journal article

Temporal lobe epilepsy: Anatomical and effective connectivity

IEEE Transactions on Neural Systems and Rehabilitation Engineering, 17(3), 214–223.

By: A. Cadotte*, T. Mareci*, T. DeMarse*, M. Parekh*, R. Rajagovindan*, W. Ditto*, S. Talathi*, D. Hwang*, P. Carney*

Contributors: A. Cadotte*, T. Mareci*, T. DeMarse*, M. Parekh*, R. Rajagovindan*, W. Ditto*, S. Talathi*, D. Hwang*, P. Carney*

author keywords: Connectivity; diffusion weighted imaging; Granger causality (GC); magnetic resonance imaging (MRI); temporal lobe epilepsy (TLE)
MeSH headings : Action Potentials; Algorithms; Brain / pathology; Brain / physiopathology; Brain Mapping / methods; Computer Simulation; Epilepsy, Temporal Lobe / pathology; Epilepsy, Temporal Lobe / physiopathology; Humans; Models, Anatomic; Models, Neurological; Nerve Net / pathology; Nerve Net / physiopathology; Synaptic Transmission
TL;DR: This paper reviews two different connectivity-based approaches with an emphasis on application to the study of epilepsy and presents effective connectivity techniques, such as Granger causality, that has been used to assess the dynamic directional relationships among brain regions. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2008 journal article

Chaos computing: Ideas and implementations

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 366(1865), 653–664.

By: W. Ditto*, K. Murali* & S. Sinha*

Contributors: W. Ditto*, K. Murali* & S. Sinha*

author keywords: chaos; computation; logic gates
TL;DR: The concept of the ‘chaos computing’ paradigm, which exploits the controlled richness of nonlinear dynamics to obtain flexible reconfigurable hardware, is reviewed. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2008 book

Effective and Anatomical Connectivity in a Rat Model of Spontaneous Limbic Seizure

In Seizure Prediction in Epilepsy: From Basic Mechanisms to Clinical Applications (pp. 45–59).

By: P. Carney*, A. Cadotte*, T. Demarse*, B. Vemuri*, T. Mareci* & W. Ditto*

Contributors: P. Carney*, A. Cadotte*, T. Demarse*, B. Vemuri*, T. Mareci* & W. Ditto*

Source: ORCID
Added: December 30, 2019

2008 journal article

Exploiting nonlinear dynamics to store and process information

International Journal of Bifurcation and Chaos, 18(5), 1551–1559.

By: A. Miliotis*, S. Sinha* & W. Ditto*

Contributors: A. Miliotis*, S. Sinha* & W. Ditto*

author keywords: chaos computing; data storage; information processing; encoding; search; threshold control
TL;DR: This work demonstrates how a single nonlinear dynamical element can store M items, where M is variable and can be large, and shows how this method of storing information can serve as a preprocessing tool for pattern matching searches. (via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education (OpenAlex)
Source: ORCID
Added: December 30, 2019

2008 journal article

Non-parametric early seizure detection in an animal model of temporal lobe epilepsy

Journal of Neural Engineering, 5(1), 85–98.

By: S. Talathi*, D. Hwang*, M. Spano, J. Simonotto*, M. Furman*, S. Myers*, J. Winters*, W. Ditto*, P. Carney*

Contributors: S. Talathi*, D. Hwang*, M. Spano, J. Simonotto*, M. Furman*, S. Myers*, J. Winters*, W. Ditto*, P. Carney*

author keywords: 1
MeSH headings : Algorithms; Animals; Data Interpretation, Statistical; Electrodes, Implanted; Electroencephalography; Epilepsy, Temporal Lobe / diagnosis; Male; Rats; Rats, Sprague-Dawley; Seizures / diagnosis; Statistics, Nonparametric
TL;DR: The performance of five non-parametric, univariate seizure detection schemes (embedding delay, Hurst scale, wavelet scale, nonlinear autocorrelation and variance energy) were evaluated as a function of the sampling rate of EEG recordings, the electrode types used for EEG acquisition, and the spatial location of the EEG electrodes to determine the applicability of the measures in real-time closed-loop seizure intervention. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2008 journal article

Spike timing dependent plasticity promotes synchrony of inhibitory networks in the presence of heterogeneity

Journal of Computational Neuroscience, 25(2), 262–281.

By: S. Talathi*, D. Hwang* & W. Ditto*

Contributors: S. Talathi*, D. Hwang* & W. Ditto*

author keywords: inhibitory synapses; spike timing dependent plasticity; synchronization; networks; heterogeneity
MeSH headings : Action Potentials / physiology; Animals; Computer Simulation; Models, Neurological; Nerve Net / physiology; Neural Inhibition / physiology; Neuronal Plasticity / physiology; Neurons / classification; Neurons / physiology; Sodium Channels / physiology; Synapses / physiology; Synaptic Transmission; Time Factors
TL;DR: A robust mechanism based on this observed synaptic plasticity rule for inhibitory synapses for two mutually coupled interneurons to phase lock in synchrony in the presence of intrisic heterogeneity in firing is proposed. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2008 journal article

Temporal spike pattern learning

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 78(3).

By: S. Talathi*, H. Abarbanel* & W. Ditto*

Contributors: S. Talathi*, H. Abarbanel* & W. Ditto*

MeSH headings : Action Potentials; Algorithms; Animals; Biophysics / methods; Humans; Learning; Models, Biological; Models, Neurological; Nerve Net / physiology; Neuronal Plasticity / physiology; Neurons / metabolism; Synapses / physiology; Synaptic Transmission; Time Factors
TL;DR: This work presents two specific implementations for the IRU circuitry, derived from the general architecture that can both learn the ISIs of a training sequence and then recognize the same ISI sequence when it is presented on subsequent occasions. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2007 journal article

Dynamic transmurality: Cardiac optical mapping reveals waves travel across transmural ablation lines

International Journal of Bifurcation and Chaos, 17(9), 3229–3234.

By: J. Simonotto*, M. Furman*, W. Ditto*, A. Miliotis*, M. Spano & T. Beaver*

Contributors: J. Simonotto*, M. Furman*, W. Ditto*, A. Miliotis*, M. Spano & T. Beaver*

author keywords: Lagendorff preparation; voltage-sensitive dye; radio-frequency ablation; atrial arrhythmia; porcine cardiac model
Source: ORCID
Added: December 30, 2019

2007 conference paper

Early seizure detection in an animal model of temporal lobe epilepsy

AIP Conference Proceedings, 953, 292–307.

By: S. Talathi, D. Hwang, W. Ditto* & P. Carney

Contributors: S. Talathi, D. Hwang, W. Ditto* & P. Carney

TL;DR: The nonlinear embedding delay measure was found to have the highest optimality index due to its ability to detect seizure very close to the EEG seizure onset time, thereby making it the most suitable dynamical measure in the development of RCLSIP in rat model with chronic limbic epilepsy. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2007 journal article

Fault tolerance and detection in chaotic computers

International Journal of Bifurcation and Chaos, 17(6), 1955–1968.

By: M. Jahed-Motlagh*, B. Kia*, W. Ditto* & S. Sinha*

Contributors: M. Jahed-Motlagh*, B. Kia*, W. Ditto* & S. Sinha*

author keywords: dynamics based computing; one-dimensional chaotic maps; testing systems; testing vectors
TL;DR: A structural testing method for a dynamics based computing device that exploits the dynamical properties of chaotic systems to detect damaged logic blocks, so that damaged elements can be detected by very few testing inputs, leading to very low testing time. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2007 journal article

Introduction: Cardiovascular physics

Chaos, 17(1).

By: N. Wessel*, J. Kurths*, W. Ditto* & R. Bauernschmitt*

Contributors: N. Wessel*, J. Kurths*, W. Ditto* & R. Bauernschmitt*

MeSH headings : Algorithms; Animals; Cardiovascular Diseases / diagnosis; Cardiovascular Diseases / therapy; Computer Simulation; Diagnosis, Computer-Assisted / methods; Heart / physiopathology; Humans; Models, Cardiovascular; Nonlinear Dynamics; Therapy, Computer-Assisted / methods
TL;DR: It could be demonstrated in this Focus Issue, that data analyses and modeling methods from cardiovascular physics have the ability to lead to significant improvements in different medical fields. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2006 conference paper

Coherence analysis over the latent period of epileptogenesis reveal that high-frequency communication is increased across hemispheres in an animal model of limbic epilepsy

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 1154–1156.

By: J. Simonotto*, S. Myers*, M. Furman*, W. Norman*, Z. Liu*, T. Demarse*, P. Carney*, W. Ditto*

Contributors: J. Simonotto*, S. Myers*, M. Furman*, W. Norman*, Z. Liu*, T. Demarse*, P. Carney*, W. Ditto*

MeSH headings : Algorithms; Animals; Brain Mapping / methods; Cerebrum / physiopathology; Disease Models, Animal; Epilepsy / physiopathology; Limbic System / physiopathology; Models, Neurological; Rats; Rats, Sprague-Dawley; Reaction Time
TL;DR: Average coherence over time was greatest in intrahemispherical electrode pairs in both stimulated and non-stimulated animals, and up to 200 Hz band displays decreased coherence interhemispherically: this occurs only in stimulated animals. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2006 journal article

Coherence analysis over the latent period of epileptogenesis reveal that high-frequency communication is increased across hemispheres in an animal model of limbic epilepsy.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 1154–1156. http://www.scopus.com/inward/record.url?eid=2-s2.0-84903876821&partnerID=MN8TOARS

By: J. Simonotto, S. Myers, M. Furman, W. Norman, Z. Liu, T. DeMarse, P. Carney, W. Ditto

Contributors: J. Simonotto, S. Myers, M. Furman, W. Norman, Z. Liu, T. DeMarse, P. Carney, W. Ditto

Source: ORCID
Added: December 30, 2019

2006 journal article

Detection of high frequency oscillations with Teager energy in an animal model of limbic epilepsy.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 2578–2580. http://www.scopus.com/inward/record.url?eid=2-s2.0-84903856887&partnerID=MN8TOARS

By: R. Nelson, S. Myers, J. Simonotto, M. Furman, M. Spano, W. Norman, Z. Liu, T. DeMarse, P. Carney, W. Ditto

Contributors: R. Nelson, S. Myers, J. Simonotto, M. Furman, M. Spano, W. Norman, Z. Liu, T. DeMarse, P. Carney, W. Ditto

Source: ORCID
Added: December 30, 2019

2006 conference paper

Detection of high frequency oscillations with teager energy in an animal model of limbic epilepsy

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 2578–2580.

By: R. Nelson*, S. Myers*, J. Simonotto*, M. Furman*, M. Spano, W. Norman*, L. Zhao*, T. DeMarse*, P. Carney*, W. Ditto*

Contributors: R. Nelson*, S. Myers*, J. Simonotto*, M. Furman*, M. Spano, W. Norman*, L. Zhao*, T. DeMarse*, P. Carney*, W. Ditto*

MeSH headings : Algorithms; Animals; Brain Mapping / methods; Diagnosis, Computer-Assisted / methods; Disease Models, Animal; Electrocardiography / methods; Epilepsy / diagnosis; Epilepsy / physiopathology; Limbic System / physiopathology; Oscillometry / methods; Rats
TL;DR: This paper presents Teager Energy as a method of finding HFOs because it is able to detect high-frequency, low-amplitude components that conventional energy measurements would miss. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: December 30, 2019

2006 journal article

Evolving into epilepsy: Multiscale electrophysiological analysis and imaging in an animal model

Experimental Neurology, 198(1), 31–47.

By: J. Sanchez*, T. Mareci*, W. Norman*, J. Principe*, W. Ditto* & P. Carney*

Contributors: J. Sanchez*, T. Mareci*, W. Norman*, J. Principe*, W. Ditto* & P. Carney*

author keywords: epilepsy; epileptogenesis; microelectrode; array; hippocampus; modeling; ensemble; single unit; burst; MRI
MeSH headings : Action Potentials / physiology; Action Potentials / radiation effects; Animals; Azides; Brain Mapping; Disease Models, Animal; Electric Stimulation / methods; Electroplating; Hippocampus / pathology; Hippocampus / physiopathology; Hippocampus / radiation effects; Magnetic Resonance Imaging / methods; Male; Models, Neurological; Neurons / pathology; Neurons / physiology; Octreotide / analogs & derivatives; Rats; Rats, Sprague-Dawley; Spectrum Analysis; Status Epilepticus / pathology; Status Epilepticus / physiopathology; Time Factors
TL;DR: Multi-microelectrode array technology is used to provide an electrophysiologic quantification of a hippocampal neural ensemble during the latent period of epileptogenesis and suggests that hippocampal neurons in both CA1-2 and dentate regions increase the number and duration of their bursting activity after injury to the contra-lateral hippocampus. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: ORCID
Added: December 30, 2019

2006 conference paper

Exploiting chaos for computation

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 1835–1838.

By: W. Ditto*, K. Mural* & S. Sinha*

Contributors: W. Ditto*, K. Mural* & S. Sinha*

TL;DR: The concept of the "chaos computing" paradigm, which exploits the controlled richness of nonlinear dynamics to obtain flexible reconfigurable hardware to indicate the latest technological advances in the field. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2006 conference paper

Exploiting nonlinear dynamics to search for the existence of matches in a database

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 1843–1846.

By: A. Miliotis*, W. Ditto* & S. Sinha*

Contributors: A. Miliotis*, W. Ditto* & S. Sinha*

TL;DR: This work proposes a method that uses nonlinear dynamics to address the task of determining the existence of a specific item in an unsorted arbitrarily large database and shows how this global threshold can be altered for identification of theexistence of items with characteristics close to the searched one. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2006 journal article

Exploiting the controlled responses of chaotic elements to design configurable hardware

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 364(1846), 2483–2494.

By: S. Sinha* & W. Ditto*

Contributors: S. Sinha* & W. Ditto*

author keywords: threshold mechanism; logic gates; dynamic computer architecture
MeSH headings : Algorithms; Computer Simulation; Computer-Aided Design; Equipment Design / methods; Feedback; Kinetics; Logistic Models; Nonlinear Dynamics; Oscillometry / methods; Signal Processing, Computer-Assisted / instrumentation; Systems Theory
TL;DR: A key feature of this implementation is that a single chaotic ‘processor’ can be flexibly configured (and re-configured) to emulate different fixed or dynamic logic gates through the simple manipulation of a threshold level. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2006 conference paper

Pre-ictal entropy analysis of microwire data from an animal model of limbic epilepsy

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 1605–1607.

By: M. Mishra*, B. Jones*, J. Simonotto*, M. Furman*, W. Norman*, L. Zhao*, T. DeMarse*, P. Carney*, W. Ditto*

Contributors: M. Mishra*, B. Jones*, J. Simonotto*, M. Furman*, W. Norman*, L. Zhao*, T. DeMarse*, P. Carney*, W. Ditto*

MeSH headings : Algorithms; Animals; Diagnosis, Computer-Assisted / methods; Disease Models, Animal; Electrodes, Implanted; Electroencephalography / instrumentation; Electroencephalography / methods; Entropy; Epilepsy / diagnosis; Epilepsy / physiopathology; Hippocampus / physiopathology; Limbic System / physiopathology; Rats
TL;DR: The primary aim was to uncover underlying relative changes in signals between the Dentate Gyrus and CA1 areas of the bilateral hippocampus in an animal model of limbic epilepsy using Shannon entropy and correlation analysis. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: ORCID
Added: December 30, 2019

2006 journal article

Pre-ictal entropy analysis of microwire data from an animal model of limbic epilepsy.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 1605–1607. http://www.scopus.com/inward/record.url?eid=2-s2.0-84903863001&partnerID=MN8TOARS

By: M. Mishra, B. Jones, J. Simonotto, M. Furman, W. Norman, Z. Liu, T. DeMarse, P. Carney, W. Ditto

Contributors: M. Mishra, B. Jones, J. Simonotto, M. Furman, W. Norman, Z. Liu, T. DeMarse, P. Carney, W. Ditto

Source: ORCID
Added: December 30, 2019

2006 conference paper

Reconfigurable logic element using a chaotic circuit

IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, 1839–1842.

By: K. Murali*, S. Sinha* & W. Ditto*

Contributors: K. Murali*, S. Sinha* & W. Ditto*

TL;DR: The experimental realization of all the fundamental logic gates, flexibly, using a chaotic circuit using a simple threshold mechanism, and the ability of on-the-fly dynamic reconfiguration of this logic cell. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2006 journal article

Using recurrence quantification analysis determinism for noise removal in cardiac optical mapping

IEEE Transactions on Biomedical Engineering, 53(4), 767–770.

By: M. Furman*, J. Simonotto*, T. Beaver*, M. Spano* & W. Ditto*

Contributors: M. Furman*, J. Simonotto*, T. Beaver*, M. Spano* & W. Ditto*

author keywords: determinism; optical mapping; noise; noise reduction; Recurrence Quantification Analysis; signal-to-noise ratio; standard median filter
MeSH headings : Algorithms; Animals; Body Surface Potential Mapping / methods; Computer Simulation; Heart Conduction System / cytology; Heart Conduction System / physiology; Image Enhancement / methods; In Vitro Techniques; Microscopy, Fluorescence / methods; Models, Cardiovascular; Models, Statistical; Stochastic Processes; Swine
TL;DR: The method illustrates an improved process for selecting filtering parameters and how using measured signal-to-noise ratio alone can lead to improper parameter selection. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2005 journal article

Construction of a reconfigurable dynamic logic cell

Pramana, 64(3), 433–441.

By: K. Murali*, S. Sinha* & W. Ditto*

Contributors: K. Murali*, S. Sinha* & W. Ditto*

author keywords: nonlinear circuits; logic gates; computer architecture
TL;DR: This work reports the first experimental realization of all the fundamental logic gates, flexibly, using a chaotic circuit, and demonstrates the combination of gates through a halfadder implementation. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: December 30, 2019

2005 conference paper

Nonlinear analysis of cardiac optical mapping data reveals ordered period in defibrillation failure

Computers in Cardiology, 32, 551–554.

By: J. Simonotto*, M. Furman*, W. Ditto*, M. Spano*, G. Liu* & K. Kavanagh*

Contributors: J. Simonotto*, M. Furman*, W. Ditto*, M. Spano*, G. Liu* & K. Kavanagh*

TL;DR: Recurrence plots were used as a tool to qualify the evolution of ordered behavior on the heart surface before fibrillation was reestablished in defibrillation failure and may provide a window in which a smaller, corrective shock may be applied to achievedefibrillation. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2003 conference paper

Chaos in Neural Systems: From Epilepsy to Neurocomputing

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 4, 3830–3833. http://www.scopus.com/inward/record.url?eid=2-s2.0-1542360051&partnerID=MN8TOARS

By: W. Ditto

Contributors: W. Ditto

Source: ORCID
Added: December 30, 2019

2003 journal article

Implementation of NOR gate by a chaotic Chua's circuit

International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 13(9), 2669–2672.

By: K. Murali*, S. Sinha* & W. Ditto*

Contributors: K. Murali*, S. Sinha* & W. Ditto*

author keywords: chaos; computing; circuit
TL;DR: The experimental implementation of the most fundamental NOR gate with a chaotic Chua's circuit by a simple threshold mechanism provides a proof of-principle experiment to demonstrate the universal computing capability of chaotic circuits in continuous time systems. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2003 conference paper

Nonlinear Analysis of Failed Ventricular Defibrillation

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 1, 196–199. http://www.scopus.com/inward/record.url?eid=2-s2.0-1542362570&partnerID=MN8TOARS

By: J. Simonotto, M. Furman, W. Ditto, M. Spano, G. Liu & K. Kavanagh

Contributors: J. Simonotto, M. Furman, W. Ditto, M. Spano, G. Liu & K. Kavanagh

Source: ORCID
Added: December 30, 2019

2003 journal article

Realization of the fundamental NOR gate using a chaotic circuit

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 68(1 2), 162051–162055. http://www.scopus.com/inward/record.url?eid=2-s2.0-17144383290&partnerID=MN8TOARS

By: K. Murali, S. Sinha & W. Ditto

Contributors: K. Murali, S. Sinha & W. Ditto

Source: ORCID
Added: December 30, 2019

2003 chapter

Unstable Periodic Orbits (UPOs) and Chaos Control in Neural Systems

In Epilepsy as a Dynamic Disease (pp. 297–322).

By: M. Spano, W. Ditto*, K. Dolan & F. Moss

TL;DR: Recently the authors have begun to realize that irregularity is much richer than mere randomness can encompass. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 5, 2020

2003 conference paper

Voltage-sensitive optical mapping for atrial fibrillation ablation treatment

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 1, 145–147. http://www.scopus.com/inward/record.url?eid=2-s2.0-1542332789&partnerID=MN8TOARS

By: M. Furman, J. Simonotto, T. Beaver, M. Spano, W. Ditto, G. Liu, K. Kavanagh

Contributors: M. Furman, J. Simonotto, T. Beaver, M. Spano, W. Ditto, G. Liu, K. Kavanagh

Source: ORCID
Added: December 30, 2019

2002 journal article

Chaos computing: Implementation of fundamental logical gates by chaotic elements

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 49(11), 1629–1633.

By: T. Munakata*, S. Sinha* & W. Ditto*

Contributors: T. Munakata*, S. Sinha* & W. Ditto*

author keywords: chaos computing; new computing paradigm; one-dimensional (1-D) chaotic systems
TL;DR: Basic principles of implementing the most fundamental computing functions by chaotic elements are described, which provide a theoretical foundation of computer architecture based on a totally new principle other than silicon chips. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2002 journal article

Flexible parallel implementation of logic gates using chaotic elements

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 65(3).

By: S. Sinha*, T. Munakata* & W. Ditto*

Contributors: S. Sinha*, T. Munakata* & W. Ditto*

TL;DR: The proposed parallel computing architecture is implemented to obtain parallelized bit-by-bit addition with a two-dimensional chaotic neuronal and a three- dimensional chaotic laser model to demonstrate the parallelism inherent in such systems. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2002 book review

Keeping in sync

[Review of Synchronization: A universal concept in Nonlinear sciences, by A. Pikovsky, M. Rosenblum, & J. Kurths]. Nature, 415(6873), 736–737.

By: W. Ditto*

Sources: Web Of Science, NC State University Libraries
Added: January 29, 2021

2002 journal article

Nonlinear antenna technology

Proceedings of the IEEE, 90(5), 882–896.

By: B. Meadows*, T. Heath*, J. Neff*, E. Brown*, D. Fogliatti*, M. Gabbay*, V. In*, P. Hasler*, S. Deweerth*, W. Ditto*

Contributors: B. Meadows*, T. Heath*, J. Neff*, E. Brown*, D. Fogliatti*, M. Gabbay*, V. In*, P. Hasler*, S. Deweerth*, W. Ditto*

author keywords: active antenna; analog VLSI; beam forming; beam steering; coupled oscillator array; nonidentical oscillators; nonlinear dynamics
TL;DR: A theoretical framework describing beam shaping and beam forming by exploiting the phase, amplitude, and coupling dynamics of nonlinear oscillator arrays is presented and experimental demonstration of non linear beam steering is realized using analog microelectronics. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2002 journal article

Parallel computing with extended dynamical systems

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 65(3).

By: S. Sinha*, T. Munakata* & W. Ditto*

Contributors: S. Sinha*, T. Munakata* & W. Ditto*

TL;DR: The scope of parallelism based on extended dynamical systems, in particular, arrays of chaotic elements, is discussed, and the rapid solution of the Deutsch-Jozsa problem is demonstrated utilizing the collective properties of such systems. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

2002 journal article

Reply to “Comment on ‘Monostable array-enhanced stochastic resonance’ ”

Reply to “Comment on ‘Monostable array-enhanced stochastic resonance’ .” Physical Review E, 66(1).

By: J. Lindner*, B. Breen*, A. Bulsara* & W. Ditto*

Sources: Crossref, NC State University Libraries
Added: September 5, 2020

2002 chapter

Spatio-temporal nonlinear dynamics: a new beginning

In J. Hogan, A. R. Krauskopf, M. di Bernado, R. E. Wilson, H. M. Osinga, M. E. Homer, & A. R. Champneys (Eds.), Nonlinear Dynamics and Chaos: Where do we go from here?

By: W. Ditto*

Ed(s): J. Hogan, A. Krauskopf, M. di Bernado, R. Wilson, H. Osinga, M. Homer, A. Champneys

Sources: Crossref, NC State University Libraries
Added: December 25, 2020

2001 journal article

Controlling neuronal spikes

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 63(5 II), 562091–562098. http://www.scopus.com/inward/record.url?eid=2-s2.0-0035333398&partnerID=MN8TOARS

By: S. Sinha & W. Ditto

Contributors: S. Sinha & W. Ditto

Source: ORCID
Added: December 30, 2019

2001 journal article

Monostable array-enhanced stochastic resonance

Physical Review E, 63(5), 511071–511076.

By: J. Lindner*, B. Breen*, M. Wills*, A. Bulsara* & W. Ditto*

Contributors: J. Lindner*, B. Breen*, M. Wills*, A. Bulsara* & W. Ditto*

TL;DR: A simple nonlinear system that exhibits multiple distinct stochastic resonances may elucidate and facilitate a variety of noise-mediated cooperative phenomena, such as noise-enhanced propagation, in a broad class of similar nonlinear systems. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: December 30, 2019

2001 journal article

Noninvasive control of stochastic resonance

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 63(4 I), 411071–411078. http://www.scopus.com/inward/record.url?eid=2-s2.0-0035304907&partnerID=MN8TOARS

By: J. Lindner, J. Mason, J. Neff, B. Breen, W. Ditto & A. Bulsara

Contributors: J. Lindner, J. Mason, J. Neff, B. Breen, W. Ditto & A. Bulsara

Source: ORCID
Added: December 30, 2019

2000 journal article

Chaos at 35,000 feet

IEEE Instrumentation and Measurement Magazine, 3(2), 18–21.

By: W. Ditto*

Contributors: W. Ditto*

Source: ORCID
Added: December 30, 2019

2000 journal article

Control of human atrial fibrillation

International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 10(3), 593–601. http://www.scopus.com/inward/record.url?eid=2-s2.0-0000156558&partnerID=MN8TOARS

By: W. Ditto, M. Spano, V. In, J. Neff, B. Meadows, J. Langberg, A. Bolmann, K. McTeague

Contributors: W. Ditto, M. Spano, V. In, J. Neff, B. Meadows, J. Langberg, A. Bolmann, K. McTeague

Source: ORCID
Added: December 30, 2019

2000 chapter

Electromagnetic fields and biological tissues: from nonlinear response to chaos control

In J. Walleczek (Ed.), Self-Organized Biological Dynamics and Nonlinear Control (pp. 341–373).

By: W. Ditto* & M. Spano

Ed(s): J. Walleczek

Sources: Crossref, NC State University Libraries
Added: December 25, 2020

2000 journal article

Noise sustained propagation: Local versus global noise

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 61(5 A), 4954–4961. http://www.scopus.com/inward/record.url?eid=2-s2.0-0001368498&partnerID=MN8TOARS

By: M. Löcher, N. Chatterjee, F. Marchesoni, W. Ditto & E. Hunt

Contributors: M. Löcher, N. Chatterjee, F. Marchesoni, W. Ditto & E. Hunt

Source: ORCID
Added: December 30, 2019

2000 journal article

Pulse Enhanced Stochastic Resonance

Physics Letters A, 277(1), 13–17.

By: J. Mason, J. Lindner, J. Neff, W. Ditto*, A. Bulsara & M. Spano

Contributors: J. Mason, J. Lindner, J. Neff, W. Ditto*, A. Bulsara & M. Spano

Sources: ORCID, Web Of Science, NC State University Libraries
Added: December 30, 2019

2000 journal article

Theory of controlling stochastic resonance

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 62(1 A), 317–327.

By: M. Löcher*, M. Inchiosa, J. Neff*, A. Bulsara, K. Wiesenfeld*, L. Gammaitoni*, P. Hänggi*, W. Ditto*

Contributors: M. Löcher*, M. Inchiosa, J. Neff*, A. Bulsara, K. Wiesenfeld*, L. Gammaitoni*, P. Hänggi*, W. Ditto*

TL;DR: A general theoretical framework is developed, based on a rate equation approach, that captures the essential features observed in experiments and numerical simulations of stochastic resonance. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1999 chapter

Chaos Control in Biological Systems

In H. G. Schuster (Ed.), Handbook of Chaos Control.

By: M. Spano & W. Ditto*

Ed(s): H. Schuster

Sources: NC State University Libraries, NC State University Libraries
Added: January 29, 2021

1999 journal article

Chaos at 35,000 feet

Industrial Physicist, 5(4), 27–29.

By: W. Ditto

Source: NC State University Libraries
Added: January 29, 2021

1999 journal article

Computing with distributed chaos

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 60(1), 363–377. http://www.scopus.com/inward/record.url?eid=2-s2.0-18144376447&partnerID=MN8TOARS

By: S. Sinha & W. Ditto

Contributors: S. Sinha & W. Ditto

Source: ORCID
Added: December 30, 2019

1999 journal article

Controlling stochastic resonance

Physical Review Letters, 82(23), 4574–4577. http://www.scopus.com/inward/record.url?eid=2-s2.0-0000617726&partnerID=MN8TOARS

By: L. Gammaitoni, M. Löcher, A. Bulsara, P. Hänggi, J. Neff, K. Wiesenfeld, W. Ditto, M. Inchiosa

Contributors: L. Gammaitoni, M. Löcher, A. Bulsara, P. Hänggi, J. Neff, K. Wiesenfeld, W. Ditto, M. Inchiosa

Source: ORCID
Added: December 30, 2019

1998 journal article

A method for visualization of ventricular fibrillation: Design of a cooled fiberoptically coupled image intensified CCD data acquisition system incorporating wavelet shrinkage based adaptive filtering

Chaos, 8(1), 94–102. http://www.scopus.com/inward/record.url?eid=2-s2.0-0346207529&partnerID=MN8TOARS

By: F. Witkowski, L. Leon, P. Penkoske, R. Clark, M. Spano, W. Ditto, W. Giles

Contributors: F. Witkowski, L. Leon, P. Penkoske, R. Clark, M. Spano, W. Ditto, W. Giles

Source: ORCID
Added: December 30, 2019

1998 journal article

Can neurons distinguish chaos from noise?

International Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 8(4), 767–781. http://www.scopus.com/inward/record.url?eid=2-s2.0-0040944349&partnerID=MN8TOARS

By: J. Lindner, B. Meadows, T. Marsh, W. Ditto & A. Bulsara

Contributors: J. Lindner, B. Meadows, T. Marsh, W. Ditto & A. Bulsara

Source: ORCID
Added: December 30, 2019

1998 journal article

Dynamics based computation

Physical Review Letters, 81(10), 2156–2159. http://www.scopus.com/inward/record.url?eid=2-s2.0-0001266470&partnerID=MN8TOARS

By: S. Sinha & W. Ditto

Contributors: S. Sinha & W. Ditto

Source: ORCID
Added: December 30, 2019

1998 journal article

Noise Enhance Propagation

Physical Review Letters, 81, 5048.

By: J. Lindner*, S. Chandramouli*, A. Bulsara*, M. Löcher* & W. Ditto*

Source: Web Of Science
Added: January 29, 2021

1998 journal article

Noise enhanced propagation

Physical Review Letters, 81(23), 5048–5051. http://www.scopus.com/inward/record.url?eid=2-s2.0-0001608554&partnerID=MN8TOARS

By: J. Lindner, S. Chandramouli, A. Bulsara, M. Löcher & W. Ditto

Contributors: J. Lindner, S. Chandramouli, A. Bulsara, M. Löcher & W. Ditto

Source: ORCID
Added: December 30, 2019

1998 conference paper

Spatiotemporal dynamics of a stochastic VLSI array

Proceedings - IEEE International Symposium on Circuits and Systems, 3, 542–545. http://www.scopus.com/inward/record.url?eid=2-s2.0-0031624012&partnerID=MN8TOARS

By: J. Neff, G. Patel, B. Meadows, S. DeWeerth & W. Ditto

Contributors: J. Neff, G. Patel, B. Meadows, S. DeWeerth & W. Ditto

Source: ORCID
Added: December 30, 2019

1998 journal article

Spatiotemporal evolution of ventricular fibrillation

Nature, 392(6671), 78–82.

By: F. Witkowski, L. Leon, P. Penkoske, W. Giles, M. Spano, W. Ditto, A. Winfree

Source: ORCID
Added: December 30, 2019

1997 journal article

Control and synchronization of chaos in high dimensional systems: Review of some recent results

Chaos, 7(4), 644–652. http://www.scopus.com/inward/record.url?eid=2-s2.0-0040453558&partnerID=MN8TOARS

By: M. Ding, E. Ding, W. Ditto, B. Gluckman, V. In, J. Peng, M. Spano, W. Yang

Contributors: M. Ding, E. Ding, W. Ditto, B. Gluckman, V. In, J. Peng, M. Spano, W. Yang

Source: ORCID
Added: December 30, 2019

1997 journal article

Introduction: Control and synchronization of chaos

Chaos: An Interdisciplinary Journal of Nonlinear Science, 7(4), 509–511.

By: W. Ditto* & K. Showalter*

TL;DR: The hallmark of deterministic chaos, an extreme sensitivity to initial conditions, suggests that chaotic systems might be difficult if not impossible to control, since any perturbations used for control would grow exponentially in time. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: December 25, 2020

1997 conference paper

Maintaining chaos

Materials Research Society Symposium - Proceedings, 459, 545–555. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030643306&partnerID=MN8TOARS

By: M. Spano, V. In & W. Ditto

Contributors: M. Spano, V. In & W. Ditto

Source: ORCID
Added: December 30, 2019

1997 journal article

Maintenance of chaos in a computational model of a thermal pulse combustor

Chaos, 7(4), 605–613. http://www.scopus.com/inward/record.url?eid=2-s2.0-0011254491&partnerID=MN8TOARS

By: V. In, M. Spano, J. Neff, W. Ditto, C. Daw, K. Edwards, K. Nguyen

Contributors: V. In, M. Spano, J. Neff, W. Ditto, C. Daw, K. Edwards, K. Nguyen

Source: ORCID
Added: December 30, 2019

1997 journal article

Real-time experimental control of a system in its chaotic and nonchaotic regimes

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 56(4). http://www.scopus.com/inward/record.url?eid=2-s2.0-0000616907&partnerID=MN8TOARS

By: D. Christini, V. In, M. Spano, W. Ditto & J. Collins

Contributors: D. Christini, V. In, M. Spano, W. Ditto & J. Collins

Source: ORCID
Added: December 30, 2019

1997 journal article

Tracking unstable periodic orbits in nonstationary high-dimensional chaotic systems: Method and experiment

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 55(5 A), 4935–4942. http://www.scopus.com/inward/record.url?eid=2-s2.0-0001114969&partnerID=MN8TOARS

By: B. Gluckman, M. Spano, W. Yang, M. Ding, V. In & W. Ditto

Contributors: B. Gluckman, M. Spano, W. Yang, M. Ding, V. In & W. Ditto

Source: ORCID
Added: December 30, 2019

1996 journal article

Controlling chaos in high dimensions: Theory and experiment

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 53(5 SUPPL. A), 4334–4344. http://www.scopus.com/inward/record.url?eid=2-s2.0-0001158240&partnerID=MN8TOARS

By: M. Ding, W. Yang, V. In, W. Ditto, M. Spano & B. Gluckman

Contributors: M. Ding, W. Yang, V. In, W. Ditto, M. Spano & B. Gluckman

Source: ORCID
Added: December 30, 2019

1996 journal article

Electric field suppression of epileptiform activity in hippocampal slices

Journal of Neurophysiology, 76(6), 4202–4205. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030473481&partnerID=MN8TOARS

By: B. Gluckman, E. Neel, T. Netoff, W. Ditto, M. Spano & S. Schiff

Contributors: B. Gluckman, E. Neel, T. Netoff, W. Ditto, M. Spano & S. Schiff

Source: ORCID
Added: December 30, 2019

1996 conference paper

Novel mapping storage architecture enabling tens of thousands of channels on a personal computer platform

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 5, 1885–1886. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030316054&partnerID=MN8TOARS

By: F. Witkowski, P. Penkoske, R. Plonsey, K. Kavanagh, W. Giles, M. Spano, W. Ditto

Contributors: F. Witkowski, P. Penkoske, R. Plonsey, K. Kavanagh, W. Giles, M. Spano, W. Ditto

Source: ORCID
Added: December 30, 2019

1996 journal article

Scaling laws for spatiotemporal synchronization and array enhanced stochastic resonance

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 53(3), 2081–2086. http://www.scopus.com/inward/record.url?eid=2-s2.0-4243891810&partnerID=MN8TOARS

By: J. Lindner, B. Meadows, W. Ditto, M. Inchiosa & A. Bulsara

Contributors: J. Lindner, B. Meadows, W. Ditto, M. Inchiosa & A. Bulsara

Source: ORCID
Added: December 30, 2019

1996 journal article

Stochastic resonance in a neuronal network from mammalian brain

Physical Review Letters, 77(19), 4098–4101. http://www.scopus.com/inward/record.url?eid=2-s2.0-0000325573&partnerID=MN8TOARS

By: B. Gluckman, T. Netoff, E. Neel, W. Ditto, M. Spano & S. Schiff

Contributors: B. Gluckman, T. Netoff, E. Neel, W. Ditto, M. Spano & S. Schiff

Source: ORCID
Added: December 30, 2019

1995 journal article

Adaptive control and tracking of chaos in a magnetoelastic ribbon

Physical Review E, 51(4).

By: V. In*, W. Ditto* & M. Spano*

Contributors: V. In*, W. Ditto* & M. Spano*

Source: ORCID
Added: December 30, 2019

1995 journal article

Array enhanced stochastic resonance and spatiotemporal synchronization

Physical Review Letters, 75(1), 3–6.

By: J. Lindner*, B. Meadows*, W. Ditto*, M. Inchiosa* & A. Bulsara*

Contributors: J. Lindner*, B. Meadows*, W. Ditto*, M. Inchiosa* & A. Bulsara*

TL;DR: It is shown via numerical simulation that local linear coupling of overdamped nonlinear oscillators significantly enhances the signal-to-noise ratio of the response of a single oscillator to a time-periodic signal and noise. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1995 journal article

Chaos control of cardiac arrhythmias

Trends in Cardiovascular Medicine, 5(2), 76–80.

By: A. Garfinkel*, J. Weiss*, W. Ditto* & M. Spano*

Contributors: A. Garfinkel*, J. Weiss*, W. Ditto* & M. Spano*

TL;DR: A recently developed method of chaos control is used to stabilize a ouabain-induced arrhythmia in rabbit ventricular tissue in vitro and extension of these results to clinically significant arrhythmias such as fibrillation will require overcoming the additional obstacles of spatiotemporal complexity. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1995 conference paper

Development of a nonlinearly deterministic signal generator for real time chaos control testing

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, 17(1), 287–288. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029429376&partnerID=MN8TOARS

By: F. Witkowski, P. Penkoske, R. Plonsey, D. Kaplan, M. Spano, W. Ditto, K. Kavanagh

Contributors: F. Witkowski, P. Penkoske, R. Plonsey, D. Kaplan, M. Spano, W. Ditto, K. Kavanagh

Source: ORCID
Added: December 30, 2019

1995 journal article

Disorder-enhanced synchronization

Physics Letters A, 206(1-2), 54–60.

By: Y. Braiman*, W. Ditto*, K. Wiesenfeld* & M. Spano*

Contributors: Y. Braiman*, W. Ditto*, K. Wiesenfeld* & M. Spano*

Source: ORCID
Added: December 30, 2019

1995 journal article

Dynamics: Numerical Explorations

Physics Today, 48(7), 57–57.

By: H. Nusse, J. Yorke & W. Ditto*

Sources: Crossref, NC State University Libraries
Added: December 25, 2020

1995 journal article

Evidence for determinism in ventricular fibrillation

Physical Review Letters, 75(6), 1230–1233.

By: F. Witkowski*, K. Kavanagh*, P. Penkoske*, R. Plonsey*, M. Spano*, W. Ditto*, D. Kaplan*

Contributors: F. Witkowski*, K. Kavanagh*, P. Penkoske*, R. Plonsey*, M. Spano*, W. Ditto*, D. Kaplan*

TL;DR: Using a recently formulated technique for in vivo cardiac transmembrane current estimation and a newly formulated measure of nonlinear determinism, ventricular fibrillation in vivo exhibits deterministic dynamics similar to those previously used in chaos control. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1995 journal article

Experimental Maintenance of Chaos

Physical Review Letters, 74(22), 4420–4423.

By: V. In*, S. Mahan*, W. Ditto* & M. Spano*

Contributors: V. In*, S. Mahan*, W. Ditto* & M. Spano*

Source: ORCID
Added: December 30, 2019

1995 journal article

Principles and applications of chaotic systems

Communications of the ACM, 38(11), 96–102.

By: W. Ditto* & T. Munakata*

Contributors: W. Ditto* & T. Munakata*

TL;DR: To understand why chaos theory can be applied toward the understanding, manipulation, and control of a variety of systems, one must start with a working knowledge of how chaotic systems behave—profoundly, but sometimes subtly different, from the behavior of random systems. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1995 journal article

Removal, suppression, and control of chaos by nonlinear design

Applied Mechanics Reviews, 48(12 pt 1), 795–808. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029515896&partnerID=MN8TOARS

By: J. Lindner & W. Ditto

Contributors: J. Lindner & W. Ditto

Source: ORCID
Added: December 30, 2019

1995 journal article

Taming spatiotemporal chaos with disorder

Nature, 378(6556), 465–467. http://www.scopus.com/inward/record.url?eid=2-s2.0-0001747882&partnerID=MN8TOARS

By: Y. Braiman, J. Lindner & W. Ditto

Contributors: Y. Braiman, J. Lindner & W. Ditto

Source: ORCID
Added: December 30, 2019

1995 journal article

Techniques for the control of chaos

Physica D: Nonlinear Phenomena, 86(1-2), 198–211.

By: W. Ditto*, M. Spano* & J. Lindner*

Contributors: W. Ditto*, M. Spano* & J. Lindner*

Source: ORCID
Added: December 30, 2019

1994 journal article

Chaos and chaos control in biology

Journal of Clinical Investigation, 93(4), 1355–1360. http://www.scopus.com/inward/record.url?eid=2-s2.0-0028197657&partnerID=MN8TOARS

By: J. Weiss, A. Garfinkel, M. Spano & W. Ditto

Contributors: J. Weiss, A. Garfinkel, M. Spano & W. Ditto

Source: ORCID
Added: December 30, 2019

1994 journal article

Chaos: From Theory to Applications

American Journal of Physics, 62(2), 190–191.

By: R. Tsonis & W. Ditto.

Sources: Crossref, NC State University Libraries
Added: December 25, 2020

1994 journal article

Controlling chaos in the brain

Nature, 370(6491), 615–620.

By: S. Schiff*, K. Jerger*, D. Duong*, T. Chang*, M. Spano* & W. Ditto*

Contributors: S. Schiff*, K. Jerger*, D. Duong*, T. Chang*, M. Spano* & W. Ditto*

MeSH headings : Action Potentials; Animals; Electric Stimulation; Female; Hippocampus / physiology; In Vitro Techniques; Models, Neurological; Nerve Net; Nonlinear Dynamics; Periodicity; Rats; Rats, Sprague-Dawley
TL;DR: In a spontaneously bursting neuronal network in vitro, chaos can be demonstrated by the presence of unstable fixed-point behaviour, and chaos control techniques can increase the periodicity of such neuronal population bursting behaviour. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1994 journal article

In vivo transmembrane cardiac current determination provides evidence for unstable fixed points during ventricular fibrillation

Canadian Journal of Cardiology, 10, 94C.

By: F. Witkowski, K. Kavanagh, P. Penkoske, R. Plonsey, D. Kaplan, M. Spano, W. Ditto

Source: NC State University Libraries
Added: January 29, 2021

1994 journal article

The fundamentals of controlling chaos

Integrative Physiological and Behavioral Science, 29(3), 235–245.

By: M. Spano* & W. Ditto*

Contributors: M. Spano* & W. Ditto*

MeSH headings : Animals; Data Interpretation, Statistical; Humans; Mathematical Computing; Models, Statistical; Nonlinear Dynamics
TL;DR: A detailed exposition of the mathematics of chaos control is presented, with an eye toward implementation in computer-controlled experiments. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1993 journal article

Chaotic resonance: A simulation

Journal of Statistical Physics, 70(1-2), 437–450.

By: E. Ippen*, J. Lindner* & W. Ditto*

Contributors: E. Ippen*, J. Lindner* & W. Ditto*

author keywords: CHAOS; RESONANCE; STOCHASTIC
Source: ORCID
Added: December 30, 2019

1993 journal article

Mastering Chaos

Scientific American, 269(2), 78–84.

By: W. Ditto* & L. Pecora

Source: Crossref
Added: September 5, 2020

1992 journal article

Controlling. cardiac chaos

Science, 257(5074), 1230–1235. http://www.scopus.com/inward/record.url?eid=2-s2.0-0026787809&partnerID=MN8TOARS

By: A. Garfinkel, M. Spano, W. Ditto & J. Weiss

Contributors: A. Garfinkel, M. Spano, W. Ditto & J. Weiss

Source: ORCID
Added: December 30, 2019

1992 journal article

Experimental observation of stochastic resonance in a magnetoelastic ribbon

Physical Review A, 46(8), 5253–5256.

By: M. Spano*, M. Wun-Fogle* & W. Ditto*

Contributors: M. Spano*, M. Wun-Fogle* & W. Ditto*

TL;DR: The observation of stochastic resonance in a parametrically driven bistable magnetoelastic buckling-ribbon experiment is reported and a characteristic spectrum for the probability of residence times for this weakly bistables system is observed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: ORCID
Added: December 30, 2019

1992 journal article

Using the sensitive dependence of chaos (the eebutterfly effectee) to direct trajectories in an experimental chaotic system

Physical Review Letters, 68(19), 2863–2866.

By: T. Shinbrot*, W. Ditto*, C. Grebogi*, E. Ott*, M. Spano* & J. Yorke*

Contributors: T. Shinbrot*, W. Ditto*, C. Grebogi*, E. Ott*, M. Spano* & J. Yorke*

TL;DR: This paper presents the first experimental verification that the sensitivity of a chaotic system to small perturbations (the butterfly effect) can be used to rapidly direct orbits from an arbitrary initial state to an arbitrary accessible desired state. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1991 journal article

Dynamics of a two-frequency parametrically driven duffing oscillator

Journal of Nonlinear Science, 1(4), 423–455.

By: J. Heagy* & W. Ditto*

Contributors: J. Heagy* & W. Ditto*

UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: ORCID
Added: December 30, 2019

1991 journal article

Experimental confirmation of the scaling theory for noise-induced crises

Physical Review Letters, 66(15), 1947–1950.

By: J. Sommerer*, W. Ditto*, C. Grebogi*, E. Ott* & M. Spano*

Contributors: J. Sommerer*, W. Ditto*, C. Grebogi*, E. Ott* & M. Spano*

TL;DR: This work investigates experimentally the scaling of the average time between intermittent, noise-induced bursts for a chaotic mechanical system near a crisis, then determines \ensuremath{\gamma} for the low-noise (``deterministic'') system, then add noise and observe that the scaling for £tau is as predicted. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1991 journal article

Experimental confirmation of the theory for critical exponents of crisis

Physics Letters A, 153(2-3), 105–109.

By: J. Sommerer*, W. Ditto*, C. Grebogi*, E. Ott* & M. Spano*

Contributors: J. Sommerer*, W. Ditto*, C. Grebogi*, E. Ott* & M. Spano*

UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: ORCID
Added: December 30, 2019

1991 journal article

Exploitation of chaos for active control: an experiment

Journal of Intelligent Material Systems and Structures, 2(4), 482–493. http://www.scopus.com/inward/record.url?eid=2-s2.0-0026240343&partnerID=MN8TOARS

By: M. Spano, W. Ditto & S. Rauseo

Contributors: M. Spano, W. Ditto & S. Rauseo

Source: ORCID
Added: December 30, 2019

1990 journal article

Crisis-induced intermittency in a parametrically driven, gravitationally buckled, magnetoelastic amorphous ribbon experiment (invited)

Journal of Applied Physics, 67(9), 5619–5623.

Contributors: H. Savage*, W. Ditto*, P. Braza*, M. Spano*, S. Rauseo* & W. Spring III

Source: ORCID
Added: December 30, 2019

1990 journal article

Erratum: Experimental observation of a stranger nonchaotic attractor (Physical Review Letters (1990) 65, 9 (1172))

Physical Review Letters, 65(9).

By: W. Ditto*, M. Spano, H. Savage, S. Rauseo, J. Heagy & E. Ott

Contributors: W. Ditto*, M. Spano, H. Savage, S. Rauseo, J. Heagy & E. Ott

Source: ORCID
Added: December 30, 2019

1990 journal article

Exact solutions of nonlinear differential equations using continued fractions

Il Nuovo Cimento B Series 11, 105(4), 429–435.

By: W. Ditto* & T. Pickett*

Contributors: W. Ditto* & T. Pickett*

Source: ORCID
Added: December 30, 2019

1990 journal article

Experimental control of chaos

Physical Review Letters, 65(26), 3211–3214.

By: W. Ditto*, S. Rauseo* & M. Spano*

Contributors: W. Ditto*, S. Rauseo* & M. Spano*

TL;DR: It was demonstrated that one can convert the motion of a chaotic dynamical system to periodic motion by controlling the system about one of the many unstable periodic orbits embedded in the chaotic attractor, through only small time dependent perturbations in an accessible system parameter. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: December 30, 2019

1990 journal article

Experimental observation of a strange nonchaotic attractor

Physical Review Letters, 65(5), 533–536.

By: W. Ditto*, M. Spano*, H. Savage*, S. Rauseo*, J. Heagy* & E. Ott*

Contributors: W. Ditto*, M. Spano*, H. Savage*, S. Rauseo*, J. Heagy* & E. Ott*

TL;DR: Evidence is presented for the existence of a strange nonchaotic attractor in a two-frequency quasi-periodically driven, buckled, magnetoelastic ribbon experiment. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1989 journal article

Experimental observation of crisis-induced intermittency and its critical exponent

Physical Review Letters, 63(9), 923–926.

By: W. Ditto*, S. Rauseo*, R. Cawley*, C. Grebogi*, G. Hsu*, E. Kostelich*, E. Ott*, H. Savage* ...

Contributors: W. Ditto*, S. Rauseo*, R. Cawley*, C. Grebogi*, G. Hsu*, E. Kostelich*, E. Ott*, H. Savage* ...

TL;DR: Critical behavior associated with intermittent temporal bursting accompanying the sudden widening of a chaotic attractor was observed and investigated experimentally in a gravitationally buckled, parametrically driven, magnetoelastic ribbon. (via Semantic Scholar)
Source: ORCID
Added: December 30, 2019

1988 journal article

Nonperturbative solutions of nonlinear differential equations using continued fractions

Journal of Mathematical Physics, 29(8), 1761–1770. http://www.scopus.com/inward/record.url?eid=2-s2.0-36549096326&partnerID=MN8TOARS

By: W. Ditto & T. Pickett

Contributors: W. Ditto & T. Pickett

Source: ORCID
Added: December 30, 2019

Employment

Updated: January 25th, 2023 08:31

2015 - present

North Carolina State University Raleigh, NC, US
Professor Physics

2009 - 2011

Arizona State University Tempe, US
Founding Director & Olin Professor of Biomedical Engineering School of Biological and Health Science Engineering

2002 - 2009

University of Florida Gainesville, US
Founding Chair and Professor Biomedical Engineering

1999 - 2002

Georgia Institute of Technology College of Engineering Atlanta, GA, US
Professor/Founding Faculty Biomedical Engineering

1996 - 1999

Georgia Institute of Technology School of Physics Atlanta, GA, US
Professor Physics

1995 - 1996

Georgia Institute of Technology School of Physics Atlanta, GA, US
Associate Professor Physics

1993 - 1995

Georgia Institute of Technology School of Physics Atlanta, GA, US
Assistant Professor Physics

1991 - 1993

College of Wooster Wooster, US
Assistant Professor Physics

1989 - 1991

Naval Surface Warfare Center Silver Spring, Maryland, US
Senior Scientist Materials

1988 - 1989

Naval Surface Warfare Center Silver Spring, MD, US
ONT Postdoctoral fellow Materials

Education

Updated: December 30th, 2019 12:27

1985 - 1988

Clemson University Clemson, SC, US
PhD Physics

1976 - 1980

University of California Los Angeles Los Angeles, CA, US
BS Physics

Funding History

Funding history based on the linked ORCID record. Updated: January 25th, 2023 08:18

grant May 15, 2021 - May 14, 2023
Nonlinearity and Information Processing
United States Department of the Navy
grant August 1, 2018 - July 1, 2021
Applications of Chaos Computing to Deterministic and Stochastic Computing and to Artificial Intelligence
Office of Naval Research
grant August 16, 2016 - October 1, 2017
Nonlinearity and Information Processing
United States Department of the Navy
grant September 1, 2004 - June 30, 2009
CRCNS Evolution into Epilepsy
National Institute of Biomedical Imaging and Bioengineering

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