Results 51 to 60 of about 2,370 (264)

Physics‐Constrained Constitutive Learning of Rate‐Limiting Timescales for Efficient Hydrogen‐Based Direct Reduction for Green Steel Making

Advanced Science, EarlyView.
A conversion‐resolved constitutive framework is developed for the hydrogen‐based direct reduction of iron oxide pellets. Effective reaction and transport timescales are inferred directly from measured trajectories and mapped against operating conditions, pellet architecture, and composition. The analysis reveals how late‐stage transport control emerges
Anurag Bajpai, Barak Ratzker, Pasquale Cavaliere, Dierk Raabe   +3 more
wiley   +1 more source

Several outcomes of fixed-point theory in interpolative metric spaces

Applied General Topology
This paper aims to generalize and improve the recent fixed-point theorems in the setting of interpolative metric spaces. More precisely, we investigate the existence and uniqueness of the fixed-point for certain operators of the Ćirić-Reich-Rus- type ...
Erdal Karapınar, Kaan Kadıoğlu, Merve Gülçin Türkmenel, Ümit Aksoy   +3 more
doaj   +1 more source

Common Fixed Points for Mappings under Contractive Conditions of (α,β,ψ)-Admissibility Type

Mathematics, 2018
In this paper, we introduce the notion of ( α , β , ψ ) -contraction for a pair of mappings ( S , T ) defined on a set X. We use our new notion to create and prove a common fixed point theorem for two mappings defined on a ...
Wasfi Shatanawi
doaj   +1 more source

A Worm‐Inspired Origami Robot with Multimodal Locomotion for Adaptive Mobility in Complex Pipeline Environments

Advanced Science, EarlyView.
An origami worm‐inspired robot achieves multimodal locomotion in confined pipelines through mechatronic integration that embeds actuation, control, and communication within each origami module. Large, reversible configuration and dimensional changes enable 25 gaits synthesized by a unified framework across peristaltic, inchworm, and wheel‐rolling modes
Qiwei Zhang, Kangning Tan, Zihan He, Hongsen Pang, Yanjie Wang, Hongbin Fang, Jian Xu   +6 more
wiley   +1 more source

Fixed Point Results for Various α-Admissible Contractive Mappings on Metric-Like Spaces

Abstract and Applied Analysis, 2014
We establish some fixed point theorems for α-admissible mappings in the context of metric-like space via various auxiliary functions. In particular, we prove the existence of a fixed point of the generalized Meir-Keeler type α-ϕ-contractive self-mapping ...
Saleh A. Al-Mezel, Chi-Ming Chen, Erdal Karapınar, Vladimir Rakočević   +3 more
doaj   +1 more source

Common Fixed Point Theorems for Generalized Geraghty (α,ψ,ϕ)-Quasi Contraction Type Mapping in Partially Ordered Metric-Like Spaces

Axioms, 2018
The aim of this paper is to establish the existence of some common fixed point results for generalized Geraghty ( α , ψ , ϕ ) -quasi contraction self-mapping in partially ordered metric-like spaces.
Haitham Qawaqneh, Mohd Noorani, Wasfi Shatanawi, Habes Alsamir   +3 more
doaj   +1 more source

Beyond Percolation: Graphene‐Enabled Network Reinforcement Enhances Thermal Transport in Paraffin Phase‐Change Composites

Advanced Science, EarlyView.
Expanded‐graphite/graphene‐nanoplatelet hybrids deliver a near‐order‐of‐magnitude thermal‐conductivity enhancement in paraffin phase‐change materials. A microCT‐informed 3D modeling framework resolves the percolating EG backbone and captures sub‐voxel GNP enrichment, quantitatively linking microstructure to heat flow and revealing a graphene‐enabled ...
Thomas Hoke, Jackson Hoke, Shucheng Guo, Brittany Chan, Xi Chen   +4 more
wiley   +1 more source

Fractional Hybrid Differential Equations and Coupled Fixed-Point Results for α-Admissible Fψ1,ψ2−Contractions in M−Metric Spaces

Discrete Dynamics in Nature and Society, 2020
In this paper, we investigate the existence of a unique coupled fixed point for α−admissible mapping which is of Fψ1,ψ2−contraction in the context of M−metric space.
Erdal Karapinar, Shimaa I. Moustafa, Ayman Shehata, Ravi P. Agarwal   +3 more
doaj   +1 more source

On \({\mathcal{F}}\)-Contractions for Weak α-Admissible Mappings in Metric-Like Spaces

Mathematics, 2020
In the paper, we consider some fixed point results of F-contractions for triangular α-admissible and triangular weak α-admissible mappings in metric-like spaces.
Jelena Vujaković, Slobodanka Mitrović, Zoran D. Mitrović, Stojan Radenović   +3 more
doaj   +1 more source

Fixed Point Results of a New Family of Contractions in Metric Space Endowed with a Graph

Journal of Mathematics, 2023
In this note, a general class of contractive inequality, namely, admissible hybrid H−α−ϕ contraction, is proposed in metric space endowed with a graph, and new criteria for which the mapping is a Picard operator are examined.
Jamilu Abubakar Jiddah, Monairah Alansari, Om Kalthum S. K. Mohammed, Mohammed Shehu Shagari, Awad A. Bakery   +4 more
doaj   +1 more source