Results 111 to 120 of about 10,817,835 (359)

Generating irregular fractals based on iterated function systems

AIMS Mathematics
The iterated function system (IFS) is important in different fields like image compression. An important feature of such systems is that they can be used to generate fractals.
Baoxing Zhang, Yunkun Zhang , Yuanyuan Xie   +2 more
doaj   +1 more source

The iterative complex demodulation applied on short and long Schumann resonance measured sequences

Contributions to Geophysics and Geodesy, 2014
The precise determination of instantaneous frequency of Schumann resonance (SR) modes, with the possibility of application to relatively short signal sequences, seems to be important for detailed analysis of SR modal frequency variations.
Adriena ONDRÁŠKOVÁ, Sebastián ŠEVČÍK   +1 more
doaj   +1 more source

Invariant sets under iteration of rational functions [PDF]

, 1965
Hans Brolin
openalex   +1 more source

Iterated Reduced Cluster Functions [PDF]

Real Analysis Exchange, 2005
Given a multifunction $F$ between topological spaces $X$ and $Y$, the reduced cluster function $C^r(F;\cdot): X \rightarrow 2^Y$ of $F$ is defined by $C^r(F;x)=\bigcap$ cl$(F(U\setminus \{x\}))$ running through the neighborhood system of $x$. By transfinite recursion, one defines iterated reduced cluster functions $C^{r,\alpha}(F;\cdot)$ for all ...
openaire   +2 more sources

Data‐driven forecasting of ship motions in waves using machine learning and dynamic mode decomposition

International Journal of Adaptive Control and Signal Processing, EarlyView.
Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez, Mauro Gaggero, Andrea Serani   +2 more
wiley   +1 more source

Weak θ-contractions and some fixed point results with applications to fractal theory

Advances in Difference Equations, 2018
In this paper, we define weak θ-contractions on a metric space into itself by extending θ-contractions introduced by Jleli and Samet (J. Inequal. Appl.
Mohammad Imdad, Waleed M. Alfaqih, Idrees A. Khan   +2 more
doaj   +1 more source

The Use of Rational Functions in the Iterative Solution of Equations on a Digital Computer [PDF]

, 1965
P. Jarratt, D. Nudds
openalex   +1 more source

Iteration of exponential functions [PDF]

Annales Academiae Scientiarum Fennicae Series A I Mathematica, 1984
P.J. Rippon, I. N. Baker
openaire   +2 more sources

Random Learning Leads to Faster Convergence in ‘Model‐Free’ ILC: With Application to MIMO Feedforward in Industrial Printing

International Journal of Adaptive Control and Signal Processing, EarlyView.
The cost as a function of the number of experiments for a non‐symmetric 21×21$$ 21\times 21 $$ system. Four approaches are shown: the proposed stochastic conjugate gradient ILC (SCGILC) method (), deterministic conjugate gradient ILC (), stochastic gradient descent ILC () and deterministic gradient descent ILC ().
Leontine Aarnoudse, Tom Oomen
wiley   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source