Results 51 to 60 of about 10,811 (261)

Common Fixed Point Theorems for Weakly Compatible Maps Satisfying a General Contractive Condition

International Journal of Mathematics and Mathematical Sciences, 2008
We introduce a new generalized contractive condition for four mappings in the framework of metric space. We give some common fixed point results for these mappings and we deduce a fixed point result for weakly compatible mappings satisfying a contractive
Cristina Di Bari, Calogero Vetro
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

FIXED POINT THEOREMS FOR WEAKLY COMMUTING AND COMPATIBLE MULTI-VALUED MAPPINGS

Demonstratio Mathematica, 2004
Let \((X, d)\) be a generalized metric space in the sense of \textit{C. F. K. Jung} [Bull. Am. Math. Soc. 75, 113--116 (1969; Zbl 0194.23801)] and \((Cl(X), H)\) the hyperspace induced by \(d\), wherein \(Cl(X)\) stands for the collection of all nonempty closed subsets of \(X\).
Miczko, Antoni, Palczewski, Boleslaw
openaire   +2 more sources

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

Recent Progress in Oxide‐Based Na‐Ion Conductors

Advanced Engineering Materials, EarlyView.
Recent advances in oxide‐based sodium‐ion conductors are reviewed, focusing on β/β″‐alumina, NASICON‐type compounds, and Na5YSi4O12‐type (N5) silicates, together with emerging perovskite and layered oxides. Improvements in ionic conductivity, compositional tuning, and processing are highlighted.
Bowei Xun, Jian Wang, Hubertus Rainaldo Arindra, Katsuro Hayashi   +3 more
wiley   +1 more source

A unique common coupled fixed point theorem for four maps under Ψ-Φ contractive condition in partial metric spaces

Cubo, 2012
In this paper, we obtain a unique coupled common fixed point theorem for four maps in partial metric spaces.En este artículo obtenemos un teorema del punto fijo clásico acoplado único para cuatro aplicaciones en espacios métricos parciales.
K.P.R Rao, G.N.V Kishore, Nguyen Van Luong   +2 more
doaj  

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

Advanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud, Jakob Gruber, Hakan Göçerler, Pierluigi Bilotto, Christian Gierl‐Mayer, Elham Loni, Michael Naguib, Carsten Gachot   +7 more
wiley   +1 more source

Common fixed point theorem for noncompatible maps in probabilistic metric space [PDF]

Surveys in Mathematics and its Applications, 2013
In this paper, we prove a common fixed point theorem for noncompatible maps in probabilistic metric space using implicit relation. Our result does not require either the completeness of the space or continuity of the maps.
Suneel Kumar, Sunny Chauhan, B. D. Pant
doaj  

Common fixed point theorems for occasionally weakly compatible maps

, 2008
In this paper, we establish a common fixed point theorem for two pairs of occasionally weakly compatible single and set-valued maps satisfying a strict contractive condition in a metric space. Our result extends many results existing in the literature as those of Aliouche and Popa [15-20].
Bouhadjera, Hakima, Godet-Thobie, Christiane   +1 more
openaire   +2 more sources

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

Advanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou, Mohammed Benwadih, Arnaud Gabas, Lina Kadura, Minh‐Quyen Le, Daniel Grinberg, Pierre‐Jean Cottinet   +6 more
wiley   +1 more source