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382 Results Found

  • Article
  • Open Access
2,150 Views
12 Pages

19 July 2021

We study the behavior of inexact products of uniformly continuous self-mappings of a complete metric space that is uniformly continuous and bounded on bounded sets. It is shown that previously established convergence theorems for products of non-expa...

(This article belongs to the Special Issue Fixed Point Theory and Its Related Topics III)
  • Article
  • Open Access
1 Citations
2,599 Views
16 Pages

ZL-Completions for ZL-Semigroups

  • Shuhua Su,
  • Qingguo Li and
  • Qi Li

15 March 2022

In this paper, we generalize a common completion pattern of ordered semigroups to the fuzzy setting. Based on a standard L-completion ZL, we introduce the notion of a ZL-semigroup as a generalization of an L-ordered semigroup, where L is a complete r...

(This article belongs to the Special Issue Symmetry/Asymmetry and Fuzzy Systems)
  • Article
  • Open Access
14 Citations
3,571 Views
7 Pages

25 February 2021

In this paper, we establish some existence of fixed-point results for some asymptotically regular multivalued mappings satisfying Kannan-type contractive condition without assuming compactness of the underlying metric space or continuity of the mapping.

(This article belongs to the Collection Mathematical Analysis and Applications)
  • Article
  • Open Access
8 Citations
2,474 Views
12 Pages

12 January 2022

In this paper we study the existence of a mild solution of a periodic boundary value problem for fractional quasilinear differential equations in a Hilbert spaces. We assume that a linear part in equations is a self-adjoint positive operator with den...

(This article belongs to the Special Issue Fixed Point, Optimization, and Applications II)
  • Article
  • Open Access
12 Citations
2,939 Views
10 Pages

On the Fixed Point Theorem for Large Contraction Mappings with Applications to Delay Fractional Differential Equations

  • Mouataz Billah Mesmouli,
  • Elvan Akın,
  • Loredana Florentina Iambor,
  • Osman Tunç and
  • Taher S. Hassan

This paper explores a new class of mappings and presents several fixed-point results for these mappings. We define these mappings by combining well-known mappings in the literature, specifically the large contraction mapping and Chatterjea’s ma...

  • Article
  • Open Access
2 Citations
971 Views
19 Pages

Fixed Point of Polynomial F-Contraction with an Application

  • Amjad E. Hamza,
  • Hayel N. Saleh,
  • Bakri Younis,
  • Khaled Aldwoah and ,
  • Osman Osman,
  • Hicham Saber and
  • Alawia Adam
  • + 2 authors+ 0 author

8 February 2026

This paper introduces polynomial F-contractions, a novel category of contractive mappings within metric spaces. This concept synthesizes two powerful generalizations of the Banach contraction principle: the F-contractions originally developed by Ward...

(This article belongs to the Special Issue Nonlinear Functional Analysis: Theory, Methods, and Applications)
  • Article
  • Open Access
17 Citations
5,218 Views
19 Pages

12 September 2018

To protect the security of vector maps, we propose a novel reversible watermarking scheme for vector maps based on a multilevel histogram modification. First, a difference histogram is constructed using the correlations of adjacent coordinates, and t...

  • Article
  • Open Access
1 Citations
1,280 Views
9 Pages

13 September 2023

In 2007, in our joint work with D. Butnariu and S. Reich, we proved that if for a self-mapping of a complete metric that is uniformly continuous on bounded sets all its iterates converge uniformly on bounded sets, then this convergence is stable unde...

(This article belongs to the Special Issue Fixed Point Theory and Its Applications Dedicated to the Memory of Professor William Arthur Kirk)
  • Article
  • Open Access
4 Citations
3,811 Views
11 Pages

Some Globally Stable Fixed Points in b-Metric Spaces

  • Umar Yusuf Batsari,
  • Poom Kumam and
  • Kanokwan Sitthithakerngkiet

30 October 2018

In this paper, the existence and uniqueness of globally stable fixed points of asymptotically contractive mappings in complete b-metric spaces were studied. Also, we investigated the existence of fixed points under the setting of a continuous mapping...

(This article belongs to the Special Issue Fixed Point Theory and Fractional Calculus with Applications)
  • Article
  • Open Access
1,016 Views
34 Pages

Research on Multi-Stage Optimization for High-Precision Digital Surface Model and True Digital Orthophoto Map Generation Methods

  • Yingwei Ge,
  • Renke Ji,
  • Bingxuan Guo,
  • Qinsi Wang and ,
  • Xiao Jiang and
  • Mofei Chen
  • + 1 author+ 0 author

7 January 2026

To enhance the overall quality and consistency of depth maps, Digital Surface Models (DSM), and True Digital Orthophoto Map (TDOM) in UAV image reconstruction, this paper proposes a multi-stage adaptive optimization generation method. First, to addre...

(This article belongs to the Special Issue Remote Sensing for 2D/3D Mapping)
  • Article
  • Open Access
3 Citations
3,262 Views
18 Pages

A global reference path generated by a path search algorithm based on a road-level driving map cannot be directly used to complete the efficient autonomous path-following motion of autonomous vehicles due to the large computational load and insuffici...

  • Article
  • Open Access
3 Citations
3,271 Views
4 Pages

7 November 2018

A dynamical system is a triple ( A , G , α ) consisting of a unital locally convex algebra A, a topological group G, and a group homomorphism α : G → Aut ( A ) that induces a continuous action of G on A. Furthermore,...

(This article belongs to the Collection Topological Groups)
  • Feature Paper
  • Article
  • Open Access
2 Citations
1,838 Views
13 Pages

Computational Insights into the Unstable Fixed Point of the Fractional Difference Logistic Map

  • Ernestas Uzdila,
  • Inga Telksniene,
  • Tadas Telksnys and
  • Minvydas Ragulskis

21 November 2024

Thedivergence from the unstable fixed point of the fractional difference logistic map is investigated in this paper. In contrary to the classical logistic map, the memory horizon of the fractional difference logistic map reaches the initial condition...

(This article belongs to the Special Issue Analytical Approaches to Nonlinear Dynamical Systems and Applications, 3rd Edition)
  • Article
  • Open Access
12 Citations
8,838 Views
14 Pages

Posyandu Application for Monitoring Children Under-Five: A 3-Year Data Quality Map in Indonesia

  • Fedri Ruluwedrata Rinawan,
  • Afina Faza,
  • Ari Indra Susanti,
  • Wanda Gusdya Purnama and ,
  • Noormarina Indraswari,
  • Didah,
  • Dani Ferdian,
  • Siti Nur Fatimah,
  • Ayi Purbasari and
  • Riki Ridwana
  • + 9 authors+ 4 authors

Posyandu is an Indonesian mother-child health, community-based healthcare. The provision of the Posyandu data quality map is crucial for analyzing results but is limited. This research aimed to (a) demonstrate data quality analysis on its completenes...

(This article belongs to the Topic Advances in Sustainable Communities, Neighborhoods and 15-Minute Cities-Theory, Methods and Techniques)
  • Article
  • Open Access
1 Citations
531 Views
22 Pages

Unmanned Aerial Vehicles (UAVs) increasingly operate in missions requiring the simultaneous satisfaction of multiple objectives: reaching task locations, performing the correct service, and preserving sufficient onboard energy for continuous operatio...

(This article belongs to the Special Issue Machine Learning Applications in Unmanned Aerial Vehicles and Drones)
  • Article
  • Open Access
379 Views
25 Pages

7 September 2026

This paper investigates interpolative contractive mappings in two different settings. In the first part, we establish existence and uniqueness results for fixed points of the existing interpolative Kannan-type contraction in complete extended b-metri...

(This article belongs to the Special Issue Nonlinear Functional Analysis: Theory, Methods, and Applications, 2nd Edition)
  • Article
  • Open Access
50 Citations
6,040 Views
20 Pages

Dynamic Hand Gesture Recognition in In-Vehicle Environment Based on FMCW Radar and Transformer

  • Lianqing Zheng,
  • Jie Bai,
  • Xichan Zhu,
  • Libo Huang and ,
  • Chewu Shan,
  • Qiong Wu and
  • Lei Zhang
  • + 2 authors+ 0 author

24 September 2021

Hand gesture recognition technology plays an important role in human-computer interaction and in-vehicle entertainment. Under in-vehicle conditions, it is a great challenge to design gesture recognition systems due to variable driving conditions, com...

(This article belongs to the Section Radar Sensors)
  • Article
  • Open Access
4 Citations
3,252 Views
15 Pages

30 August 2023

The safety of autonomous driving is closely linked to accurate depth perception. With the continuous development of autonomous driving, depth completion has become one of the crucial methods in this field. However, current depth completion methods ha...

(This article belongs to the Section Aerospace Science and Engineering)
  • Article
  • Open Access
35 Citations
2,398 Views
6 Pages

Refinements to Relation-Theoretic Contraction Principle

  • Aftab Alam,
  • Reny George and
  • Mohammad Imdad

28 June 2022

After the appearance of relation-theoretic contraction principle proved in a metric space equipped with an amorphous binary relation (often termed as relational metric space), various core fixed point results have been proved in the setting of differ...

(This article belongs to the Section Geometry and Topology)
  • Article
  • Open Access
80 Views
28 Pages

5 November 2026

In this paper, we introduce a generalized (ε-δ)-type contractive condition and develop a unified framework that extends a wide spectrum of classical fixed-point results for self-mappings in complete metric spaces, with or without contin...

(This article belongs to the Special Issue Fixed-Point Theory and Its Related Topics, 5th Edition)
  • Article
  • Open Access
584 Views
10 Pages

On p-Hardy–Rogers and p-Zamfirescu Contractions in Complete Metric Spaces: Existence and Uniqueness Results

  • Zouaoui Bekri,
  • Nicola Fabiano,
  • Mohammed Ahmed Alomair and
  • Abdulaziz Khalid Alsharidi

16 December 2025

In this paper, we introduce and investigate two generalized forms of classical contraction mappings, namely the p-Hardy–Rogers and p-Zamfirescu contractions. By incorporating the integer parameter p≥1, these new definitions extend the tradit...

(This article belongs to the Section C: Mathematical Analysis)
  • Review
  • Open Access
489 Views
52 Pages

A Survey of Map Construction and Management Methods for Single Embodied Agents

  • Chao Yan,
  • Zeyang Feng,
  • Fei Ye,
  • Yang Sun and ,
  • Yefei Gong and
  • Yu Liu
  • + 1 author+ 0 author

1 October 2026

Embodied intelligent systems need to complete the closed loop of perception–understanding–decision–execution in the real world. One of their core capabilities is constructing, maintaining, and utilizing environmental maps. Maps not...

(This article belongs to the Topic Navigation and Positioning System: Opportunities and Obstacles)
  • Article
  • Open Access
3 Citations
2,661 Views
14 Pages

Some Fixed Point Results of Weak-Fuzzy Graphical Contraction Mappings with Application to Integral Equations

  • Shamoona Jabeen,
  • Zhiming Zheng,
  • Mutti-Ur Rehman,
  • Wei Wei and
  • Jehad Alzabut

4 March 2021

The present paper aims to introduce the concept of weak-fuzzy contraction mappings in the graph structure within the context of fuzzy cone metric spaces. We prove some fixed point results endowed with a graph using weak-fuzzy contractions. By relaxin...

(This article belongs to the Special Issue Nonlinear Problems and Applications of Fixed Point Theory)
  • Article
  • Open Access
2 Citations
3,357 Views
18 Pages

7 November 2019

A mapping guidance algorithm of a quadrotor for unknown indoor environments is proposed. A sensor with limited sensing range is assumed to be mounted on the quadrotor to obtain object data points. With obtained data, the quadrotor computes velocity v...

(This article belongs to the Section Remote Sensors)
  • Article
  • Open Access
2 Citations
2,413 Views
15 Pages

A Fixed Point Approach to Lattice Fuzzy Set via F-Contraction

  • Shazia Kanwal,
  • Akbar Azam,
  • Muhammad Gulzar and
  • Gustavo Santos-García

7 October 2022

In this work, we design and demonstrate the occurrence of L-fuzzy common fixed points of L-fuzzy mappings (L-FM) meeting contractive criteria in the framework of complete b-metric spaces (b-MS) employing F-contractions and a certain class of continuo...

(This article belongs to the Section D2: Operations Research and Fuzzy Decision Making)
  • Article
  • Open Access
950 Views
13 Pages

A Fixed-Point Theorem for Mappings Satisfying a Contractive Condition Involving Tρ

  • Nicola Fabiano,
  • Zouaoui Bekri,
  • Amir Baklouti and
  • Amani Alkathiry

28 April 2026

We prove that a self-mapping T on a complete metric space (X,D), satisfying a generalized contractive condition involving its ρ-th iterate Tρ (ρ∈N,ρ≥2) and a uniform coefficient bound L<1, possesses a unique fixed point. Th...

(This article belongs to the Special Issue Theory and Applications in Functional Analysis)
  • Article
  • Open Access
274 Views
20 Pages

24 September 2026

In this paper we prove a transfer principle for Banach algebras and use it to show that, for local identities of product type, the algebraic hypotheses of the commutativity theorems of Yood type are superfluous. Such theorems assume an algebraic iden...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
1 Citations
2,935 Views
18 Pages

25 June 2024

Background: High-definition maps can provide necessary prior data for autonomous driving, as well as the corresponding beyond-line-of-sight perception, verification and positioning, dynamic planning, and decision control. It is a necessary element to...

(This article belongs to the Section Vehicular Sensing)
  • Article
  • Open Access
9 Citations
2,962 Views
25 Pages

Twin screw granulation (TSG) is a continuous wet granulation technique that is used widely across different solid manufacturing industries. The TSG has been recognized to have numerous advantages due to its modular design and continuous manufacturing...

  • Article
  • Open Access
32 Citations
2,940 Views
21 Pages

Solving a Fractional-Order Differential Equation Using Rational Symmetric Contraction Mappings

  • Hasanen A. Hammad,
  • Praveen Agarwal,
  • Shaher Momani and
  • Fahad Alsharari

The intent of this manuscript is to present new rational symmetric ϖ−ξ-contractions and infer some fixed-points for such contractions in the setting of Θ-metric spaces. Furthermore, some related results such as Suzuki-type rational symmetric contract...

(This article belongs to the Section General Mathematics, Analysis)
  • Article
  • Open Access
23 Citations
7,473 Views
23 Pages

Wireless Acoustic Sensor Nodes for Noise Monitoring in the City of Linares (Jaén)

  • Jose-Angel Fernandez-Prieto,
  • Joaquín Cañada-Bago and
  • Manuel-Angel Gadeo-Martos

24 December 2019

Noise pollution is a problem that affects millions of people worldwide. Over the last few years, many researchers have devoted their attention to the design of wireless acoustic sensor networks (WASNs) to monitor the real data of continuous and preci...

(This article belongs to the Special Issue Smart Wireless Acoustic Sensor Network Design for Noise Monitoring in Smart Cities)
  • Article
  • Open Access
36 Citations
7,197 Views
17 Pages

Landscape and Tourism: Evolution of Research Topics

  • Mercedes Jiménez-García,
  • José Ruiz-Chico and
  • Antonio Rafael Peña-Sánchez

2 December 2020

Tourism and landscape are broad and complex scientific research fields, as is the synergy between them has given rise to a volume of articles diverse in nature, subject matter and methodology. These difficulties mean that, at present, there is no com...

(This article belongs to the Special Issue Landscape and Tourism, Landscapes of Tourism)
  • Article
  • Open Access
303 Views
37 Pages

Crack-Free GPU Tessellation for Real-Time Visual Bone Drilling in Virtual Arthroscopic Simulators

  • Simon D. Koch,
  • Furkan Dinc,
  • Tansel Halic,
  • Hayden Reitz and
  • Clayton Maddox

20 September 2026

Background/Objectives: Real-time arthroscopic bone drilling in simulators requires high graphics and haptic update rates while deforming bone visually. We present a fully GPU-resident, shader-based pipeline for the Virtual Rotator Cuff Arthroscopic S...

  • Article
  • Open Access
19 Citations
9,531 Views
22 Pages

Change Detection from Remote Sensing to Guide OpenStreetMap Labeling

  • Conrad M. Albrecht,
  • Rui Zhang,
  • Xiaodong Cui,
  • Marcus Freitag and ,
  • Hendrik F. Hamann,
  • Levente J. Klein,
  • Ulrich Finkler,
  • Fernando Marianno,
  • Johannes Schmude and
  • Siyuan Lu
  • + 8 authors+ 3 authors

The growing amount of openly available, meter-scale geospatial vertical aerial imagery and the need of the OpenStreetMap (OSM) project for continuous updates bring the opportunity to use the former to help with the latter, e.g., by leveraging the lat...

(This article belongs to the Special Issue OpenStreetMap as A Multi-Disciplinary Nexus: Perspectives, Practices and Procedures)
  • Article
  • Open Access
3 Citations
805 Views
10 Pages

Fixed-Point Results in Metric Spaces for Large Triangle–Perimeter Contractions

  • Mouataz Billah Mesmouli,
  • Loredana Florentina Iambor and
  • Taher S. Hassan

28 January 2026

We introduce a new class of mappings, referred to as large triangle–perimeter contractions, which simultaneously extend Petrov’s triangle–perimeter contractions and Burton’s large contraction principle. The proposed approach c...

(This article belongs to the Topic Fixed Point Theory and Measure Theory)
  • Review
  • Open Access
33 Citations
10,260 Views
16 Pages

High-Definition Map Representation Techniques for Automated Vehicles

  • Babak Ebrahimi Soorchaei,
  • Mahdi Razzaghpour,
  • Rodolfo Valiente,
  • Arash Raftari and
  • Yaser Pourmohammadi Fallah

19 October 2022

Many studies in the field of robot navigation have focused on environment representation and localization. The goal of map representation is to summarize spatial information in topological and geometrical abstracts. By providing strong priors, maps i...

(This article belongs to the Collection Advance Technologies of Navigation for Intelligent Vehicles)
  • Article
  • Open Access
15 Citations
5,976 Views
23 Pages

GIS-Based Mapping of Seismic Parameters for the Pyrenees

  • José Lázaro Amaro-Mellado and
  • Dieu Tien Bui

In the present paper, three of the main seismic parameters, maximum magnitude -Mmax, b-value, and annual rate -AR, have been studied for the Pyrenees range in southwest Europe by a Geographic Information System (GIS). The main aim of this work is to...

(This article belongs to the Special Issue Geo-Informatics in Resource Management)
  • Review
  • Open Access
  • Best Paper Award
423 Citations
65,395 Views
40 Pages

Remote Sensing of Coral Reefs for Monitoring and Management: A Review

  • John D. Hedley,
  • Chris M. Roelfsema,
  • Iliana Chollett,
  • Alastair R. Harborne and ,
  • Scott F. Heron,
  • Scarla Weeks,
  • William J. Skirving,
  • Alan E. Strong,
  • C. Mark Eakin and
  • Peter J. Mumby
  • + 8 authors+ 3 authors

6 February 2016

Coral reefs are in decline worldwide and monitoring activities are important for assessing the impact of disturbance on reefs and tracking subsequent recovery or decline. Monitoring by field surveys provides accurate data but at highly localised scal...

(This article belongs to the Special Issue Remote Sensing for Coral Reef Monitoring)
  • Article
  • Open Access
367 Views
19 Pages

10 August 2026

Accurate road extraction from high-resolution remote sensing imagery plays a vital role in numerous geospatial applications, including urban planning, disaster emergency response, intelligent transportation, and map updating. However, significant var...

(This article belongs to the Section Computing and Artificial Intelligence)
  • Article
  • Open Access
4 Citations
3,038 Views
22 Pages

13 January 2022

The static problem of a layered isotropic elastic body is a very useful research subject in relation to the analysis and design of foundation works. Due to the complexity of the problem, there is no analytical solution to the problem so far. This stu...

(This article belongs to the Special Issue Geotechnical Engineering Hazards)
  • Article
  • Open Access
3 Citations
3,190 Views
11 Pages

Orbit Tracing Properties on Hyperspaces and Fuzzy Dynamical Systems

  • Salud Bartoll,
  • Félix Martínez-Giménez,
  • Alfred Peris and
  • Francisco Rodenas

15 December 2022

Let X be a compact metric space and a continuous map f:X→X which defines a discrete dynamical system (X,f). The map f induces two natural maps, namely f¯:K(X)→K(X) on the hyperspace K(X) of non-empty compact subspaces of X and the Zade...

(This article belongs to the Special Issue Topological Groups and Dynamics)
  • Article
  • Open Access
2 Citations
1,779 Views
26 Pages

A Path-Driven Fluid Routing and Scheduling Method for Continuous-Flow Microfluidic Biochips with Delay Time Optimization

  • Zhisheng Chen,
  • Bowen Liu,
  • Hongjin Su,
  • Zhen Chen and ,
  • Genggeng Liu and
  • Xing Huang
  • + 1 author+ 0 author

Routing and application mapping are critical stages in the design of continuous-flow microfluidic biochips (CFMBs). The routing stage determines the channel network connecting components and ports, while application mapping schedules fluid transporta...

  • Article
  • Open Access
2,816 Views
12 Pages

8 July 2019

The solutions for many real life problems may be obtained by interpreting the given problem mathematically in the form f ( x ) = x . One such example is that of the famous Borsuk–Ulam theorem in which, using some fixed point argument, it...

(This article belongs to the Special Issue Advance in Nonlinear Analysis and Optimization)
  • Proceeding Paper
  • Open Access
168 Views
17 Pages

28 October 2026

Fixed-wing UAVs operating in GNSS-denied conditions require stable state estimates over long distances, yet standalone visual–inertial odometry (VIO) still accumulates drift during sustained forward flight because loop closures are rare and vie...

(This article belongs to the Proceedings of The 13th International Electronic Conference on Sensors and Applications)
  • Feature Paper
  • Article
  • Open Access
4 Citations
3,388 Views
38 Pages

9 May 2022

We prove various results in infinite-dimensional differential calculus that relate the differentiability properties of functions and associated operator-valued functions (e.g., differentials). The results are applied in two areas: (1) in the theory o...

(This article belongs to the Special Issue Advance in Topology and Functional Analysis——In Honour of María Jesús Chasco's 65th Birthday)
  • Article
  • Open Access
10 Citations
2,840 Views
13 Pages

Remarks on Surjectivity of Gradient Operators

  • Raffaele Chiappinelli and
  • David E. Edmunds

8 September 2020

Let X be a real Banach space with dual X∗ and suppose that F:X→X∗. We give a characterisation of the property that F is locally proper and establish its stability under compact perturbation. Modifying an recent result of ours, we p...

(This article belongs to the Special Issue Advances in Nonlinear Spectral Theory)
  • Article
  • Open Access
8 Citations
7,336 Views
13 Pages

The Copper Basin (CB) of southeastern Tennessee, known as the Ducktown Mining District, is a classic example of forest and soil destruction due to extensive mining and smelting operations from the mid-1800s until 1987. The smelting operation released...

  • Article
  • Open Access
7 Citations
4,081 Views
15 Pages

A General Framework for Reconstructing Full-Sample Continuous Vehicle Trajectories Using Roadside Sensing Data

  • Guimin Su,
  • Zimu Zeng,
  • Andi Song,
  • Cong Zhao and ,
  • Feng Shen,
  • Liangxiao Yuan and
  • Xinghua Li
  • + 2 authors+ 0 author

28 February 2023

Vehicle trajectory data play an important role in autonomous driving and intelligent traffic control. With the widespread deployment of roadside sensors, such as cameras and millimeter-wave radar, it is possible to obtain full-sample vehicle trajecto...

(This article belongs to the Special Issue Applications of Artificial Intelligence to Improve Road Traffic Performance)
  • Article
  • Open Access
16 Citations
3,003 Views
12 Pages

24 February 2023

To solve the problems of backward means of coal mine gas and coal dust explosion monitoring, late reporting, and low leakage rate, a sound recognition method of coal mine gas and coal dust explosion based on GoogLeNet was proposed. After installing m...

(This article belongs to the Special Issue Entropy and Information Theory in Acoustics III)

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