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10,849 Results Found

  • Article
  • Open Access
6 Citations
5,302 Views
36 Pages

13 May 2022

The Lamm–Honigmann energy storage is a sorption-based storage that can be arbitrarily charged and discharged with both heat and electrical power. The mechanical charging and discharging processes of this storage are characterized by an internal...

(This article belongs to the Section Energy Systems)
  • Article
  • Open Access
2,116 Views
19 Pages

Novel Off-Design Operation Maps Showing Functionality Limitations of Organic Rankine Cycle Validated by Experiments

  • Ying Zhang,
  • Li Zhao,
  • Shuai Deng,
  • Ming Li,
  • Yali Liu,
  • Qiongfen Yu and
  • Mengxing Li

4 November 2022

In this study, we developed a new methodology to analyze the off-design performance of the organic Rankine cycle. The methodology enabled us to predict the performance based on four-dimensional decision variables and a set of constraints. A correspon...

(This article belongs to the Special Issue Advances in Solar Thermal Technologies: Renewable Energy Conversion and Utilization)
  • Article
  • Open Access
2,032 Views
13 Pages

12 January 2025

The twisted reflection operators are defined on the hyperbolic plane. They are then specialized in hyperbolic reflections, according to which the desymmetrized PSL (2,Z) group is rewritten. The Bogomolny–Carioli transfer operators are newl...

  • Article
  • Open Access
2,369 Views
16 Pages

27 December 2022

We consider the problem of showing that 1 is an eigenvalue for a family of generalised transfer operators of the Farey map. This is an important problem in the thermodynamic formalism approach to dynamical systems, which in this particular case is re...

(This article belongs to the Section C2: Dynamical Systems)
  • Article
  • Open Access
4 Citations
2,944 Views
8 Pages

Picard-Jungck Operator for a Pair of Mappings and Simulation Type Functions

  • Sumit Chandok,
  • Aiman Mukheimer,
  • Azhar Hussain and
  • Ljiljana Paunović

In this manuscript, we propose a new class of Picard-Jungck operators for a pair of mappings on complete metric spaces by taking into account of the C G -simulation function. Also, some new results for the existence of such operators for a pai...

(This article belongs to the Special Issue Applications in Theoretical and Computational Fixed Point Problems)
  • Article
  • Open Access
2,004 Views
20 Pages

Cost Efficiency Analysis in Integrated Cadastre Mapping System Through an Operational Management Approach

  • Seto Apriyadi,
  • Irwan Meilano,
  • Andri Hernandi,
  • Alfita Puspa Handayani and
  • Afden Mahyeda

25 March 2025

Responding to cost inefficiency in the Indonesian cadastral mapping system, this study aimed to analyze the implementation of integrated mapping activities, namely complete systematic land registration, assessing land value zones, and regional land s...

(This article belongs to the Special Issue Economic Perspectives on Land Use and Valuation)
  • Article
  • Open Access
33 Citations
5,938 Views
11 Pages

12 September 2018

We study and examine the rotational hypersurface and its Gauss map in Euclidean four-space E 4 . We calculate the Gauss map, the mean curvature and the Gaussian curvature of the rotational hypersurface and obtain some results. Then, we introdu...

  • Article
  • Open Access
24 Citations
7,505 Views
22 Pages

Mapping Glacier Forelands Based on UAV BVLOS Operation in Antarctica

  • Maciej Dąbski,
  • Anna Zmarz,
  • Mirosław Rodzewicz,
  • Małgorzata Korczak-Abshire,
  • Izabela Karsznia,
  • Katarzyna Lach,
  • Grzegorz Rachlewicz and
  • Katarzyna Chwedorzewska

14 February 2020

The aim of this article is to show geomorphological mapping of remote Antarctic locations using images taken by a fixed-wing unmanned aerial vehicle (UAV) during the Beyond Visual Line of Sight (BVLOS) operations. We mapped landform assemblages devel...

(This article belongs to the Special Issue Applications of UAVs in Cold Region Ecological and Environmental Studies)
  • Article
  • Open Access
1,821 Views
13 Pages

17 October 2023

We shall present some more generalized and further refinements of reversed AM-GM operator inequalities for positive linear maps due to Xue’s and Ali’s publications.

(This article belongs to the Special Issue Current Research on Mathematical Inequalities II)
  • Article
  • Open Access
6 Citations
2,206 Views
18 Pages

4 August 2023

The salp swarm algorithm imitates the swarm behavior of salps during navigation and hunting that has been proven the superiority of search for best solution. However, although it has sufficient global search ability, it is still worth paying attentio...

  • Article
  • Open Access
4 Citations
4,249 Views
21 Pages

Assessing SDI Implementation Scenarios to Facilitate Emergency Mapping Operations in the Dominican Republic

  • Gregorio Rosario Michel,
  • María Ester Gonzalez-Campos,
  • Fernando Manzano Aybar and
  • Joep Crompvoets

The Dominican Republic (DR) is a small island developing state (SIDS) highly exposed to disaster-risk phenomena, such as earthquakes, hurricanes, etc. The Spatial Data Infrastructure (SDI) enables coordination and sharing of spatial information and s...

  • Article
  • Open Access
3 Citations
3,631 Views
15 Pages

The Role of Extra-Operative Cortical Stimulation and Mapping in the Surgical Management of Intracranial Gliomas

  • Kostas N. Fountas,
  • Alexandros Brotis,
  • Thanasis Paschalis and
  • Eftychia Kapsalaki

25 October 2022

Background: Aggressive resection without compromising the patient’s neurological status remains a significant challenge in treating intracranial gliomas. Our current study aims to evaluate the efficacy and safety of extra-operative stimulation...

(This article belongs to the Section Neuro-oncology)
  • Article
  • Open Access
194 Views
28 Pages

28 September 2026

We develop a geometric and operationally explicit construction of correspondence rules (Bopp operators) for s-parametrized Stratonovich–Weyl phase-space symbols associated with symmetric irreducible representations of SU(d). Our main resul...

(This article belongs to the Special Issue Symmetry in Mathematical Physics: Current Topics and Recent Advances—in Honour of Professor Jean-Pierre Gazeau on the Occasion of His 80th Birthday)
  • Article
  • Open Access
1,814 Views
13 Pages

16 May 2024

Under a distributed information system, the scale of various operational components such as applications, operating systems, databases, servers, and networks is immense, with intricate access relationships. The silo effect of each professional is pro...

  • Article
  • Open Access
12 Citations
5,129 Views
24 Pages

Global Mapping of Seaport Operability Risk Indicators Using Open-Source Metocean Data

  • Matijs Wiegel,
  • Wiebe de Boer,
  • Mark van Koningsveld,
  • Arne van der Hout and
  • Ad Reniers

Seaport operability is key to the economic viability of ports. Metocean conditions (e.g., wind, short waves, and infragravity waves) affect this operability when certain thresholds are exceeded. This paper describes a method for the global mapping of...

(This article belongs to the Section Coastal Engineering)
  • Article
  • Open Access
38 Citations
4,732 Views
24 Pages

4 March 2022

Vibration analysis is an established method for fault detection and diagnosis of rolling element bearings. However, it is an expert oriented exercise. To relieve the experts, the use of Artificial Intelligence (AI) techniques such as deep neural netw...

(This article belongs to the Special Issue Feature Papers in Fault Diagnosis & Sensors Section 2022)
  • Article
  • Open Access
105 Citations
10,592 Views
17 Pages

12 October 2018

The satellite remote-sensing-based damage-mapping technique has played an indispensable role in rapid disaster response practice, whereas the current disaster response practice remains subject to the low damage assessment accuracy and lag in timeline...

(This article belongs to the Section Remote Sensing Image Processing)
  • Article
  • Open Access
10 Citations
4,272 Views
19 Pages

Causal Inference of Optimal Control Water Level and Inflow in Reservoir Optimal Operation Using Fuzzy Cognitive Map

  • Yi Liu,
  • Jianzhong Zhou,
  • Zhongzheng He,
  • Chengwei Lu,
  • Benjun Jia,
  • Hui Qin,
  • Kuaile Feng,
  • Feifei He and
  • Guangbiao Liu

15 October 2019

Reservoir optimal operation (ROO) has always been a hot issue in the field of water resources management. Analysis of the relationship of optimal control water level and inflow is conducive to understanding and solving ROO under deterministic inflow...

(This article belongs to the Section Water Resources Management, Policy and Governance)
  • Article
  • Open Access
1 Citations
1,010 Views
26 Pages

29 November 2025

This paper presents a practical and auditable methodology for prioritizing drinking water hazards based on fuzzy preference relations (FPR). The method is based on additive pairwise comparisons of tap water quality parameters, which are aggregated (m...

(This article belongs to the Section Water Quality and Contamination)
  • Article
  • Open Access
8 Citations
2,769 Views
17 Pages

A Novel Operational Rice Mapping Method Based on Multi-Source Satellite Images and Object-Oriented Classification

  • Yanyan Shen,
  • Jingcheng Zhang,
  • Lingbo Yang,
  • Xiaoxuan Zhou,
  • Huizi Li and
  • Xingjian Zhou

29 November 2022

Combining optical and synthetic aperture radar (SAR) data for crop mapping has become a crucial way to improve classification accuracy, especially in cloudy and rainy areas. However, the acquisition of optical images is significantly unstable due to...

(This article belongs to the Special Issue Remote Sensing in Smart Agriculture)
  • Article
  • Open Access
104 Citations
3,757 Views
23 Pages

Exploiting Dynamic Vector-Level Operations and a 2D-Enhanced Logistic Modular Map for Efficient Chaotic Image Encryption

  • Hongmin Li,
  • Shuqi Yu,
  • Wei Feng,
  • Yao Chen,
  • Jing Zhang,
  • Zhentao Qin,
  • Zhengguo Zhu and
  • Marcin Wozniak

31 July 2023

Over the past few years, chaotic image encryption has gained extensive attention. Nevertheless, the current studies on chaotic image encryption still possess certain constraints. To break these constraints, we initially created a two-dimensional enha...

(This article belongs to the Special Issue Image Encryption and Privacy Protection Based on Chaotic Systems)
  • Article
  • Open Access
3 Citations
1,227 Views
31 Pages

13 March 2026

In contemporary communication systems, digital images occupy an irreplaceable role; however, the privacy-related risks attendant to their prevalent application have grown increasingly salient. This paper presents an image encryption scheme integratin...

(This article belongs to the Section Signal and Data Analysis)
  • Article
  • Open Access
6 Citations
3,143 Views
18 Pages

The COVID-19 pandemic has significantly changed life and work patterns and reshaped the healthcare industry and public health strategies. It posed considerable challenges to public health emergency operations centers (PHEOCs). In this period, digital...

  • Article
  • Open Access
12 Citations
2,938 Views
16 Pages

10 January 2025

Three-dimensional (3D) printing attracts significant interest in the food industry for its ability to create complex structures and customize nutritional content. Printing materials, or inks, are specially formulated for food or nutraceuticals. These...

(This article belongs to the Section Food Engineering and Technology)
  • Article
  • Open Access
396 Views
27 Pages

22 September 2026

Multi-reservoir joint operation is a high-dimensional, nonlinear, multi-input multi-output (MIMO) water-allocation problem. This study aimed to map the state variables of multiple water sources directly to the water allocated to each user with a sing...

(This article belongs to the Special Issue Intelligent Regulation and Adaptive Management of Complex River Basin Systems)
  • Article
  • Open Access
1,386 Views
24 Pages

Imaging applications involving outdoor scenes and fast motion require sensing and processing of high-dynamic-range images at video rates. In turn, image signal processing pipelines that serve low-dynamic-range displays require tone mapping operators...

(This article belongs to the Special Issue Design of Low-Voltage and Low-Power Integrated Circuits)
  • Review
  • Open Access
13 Citations
4,952 Views
19 Pages

22 February 2023

Pre-operative mapping of brain functions is crucial to plan neurosurgery and investigate potential plasticity processes. Due to its availability, functional magnetic resonance imaging (fMRI) is widely used for this purpose; on the other hand, the dem...

(This article belongs to the Special Issue New Advances in Neuroimaging and Brain Functions)
  • Article
  • Open Access
5 Citations
3,270 Views
19 Pages

16 November 2018

This paper uses the viscosity implicit midpoint rule to find common points of the fixed point set of a nonexpansive mapping and the zero point set of an accretive operator in Banach space. Under certain conditions, this paper obtains the strong conve...

(This article belongs to the Special Issue Fixed Point Theory and Related Nonlinear Problems with Applications)
  • Article
  • Open Access
23 Citations
5,567 Views
18 Pages

Coping with Extreme Events: Effect of Different Reservoir Operation Strategies on Flood Inundation Maps

  • Elena Ridolfi,
  • Silvia Di Francesco,
  • Claudia Pandolfo,
  • Nicola Berni,
  • Chiara Biscarini and
  • Piergiorgio Manciola

10 May 2019

The need of addressing “residual flood risk” associated with structural protection measures, such as levee systems and flood-control reservoirs, has fostered actions aimed at increasing flood risk awareness. Structural measures have lower...

(This article belongs to the Special Issue Future Challenges in Flood Defence Design and Management)
  • Article
  • Open Access
3 Citations
3,049 Views
17 Pages

Personalized mappings become popular among the public with the support of data diversity and device diversity. To develop personalized maps, constructing map symbols through automated ways is beneficial. The formal representation of map symbols (i.e....

  • Article
  • Open Access
452 Views
28 Pages

At present, constructing discrete chaotic systems with unique characteristics and chaos has become a focal topic in the field of nonlinear research. This paper presents a new framework for designing multi-cavity chaotic maps in polar coordinates. It...

(This article belongs to the Special Issue Bifurcation, Chaos, and Fractals in Fractional-Order Electrical and Electronic Systems, 2nd Edition)
  • Article
  • Open Access
13 Citations
2,783 Views
17 Pages

9 March 2021

This manuscript aims to study a generalized, set-valued, mixed-ordered, variational inclusion problem involving H(·,·)-compression XOR-αM-non-ordinary difference mapping and relaxed cocoercive mapping in real-ordered Hilbert spaces. The resolvent ope...

(This article belongs to the Special Issue Advanced Calculus in Problems with Symmetry)
  • Article
  • Open Access
3 Citations
3,110 Views
10 Pages

11 April 2020

We introduce the notions of meet, semi-prime, and prime weak closure operations. Using homomorphism of BCK-algebras φ : X → Y , we show that every epimorphic image of a non-zeromeet element is also non-zeromeet and, for mapping c ...

(This article belongs to the Special Issue Algebra and Discrete Mathematics 2020)
  • Article
  • Open Access
15 Citations
6,104 Views
29 Pages

Geological Map Generalization Driven by Size Constraints

  • Azimjon Sayidov,
  • Meysam Aliakbarian and
  • Robert Weibel

Geological maps are an important information source used in the support of activities relating to mining, earth resources, hazards, and environmental studies. Owing to the complexity of this particular map type, the process of geological map generali...

(This article belongs to the Special Issue Map Generalization)
  • Article
  • Open Access
3 Citations
6,113 Views
22 Pages

13 November 2023

This paper discusses the excavator’s actual productivity in trenching and grading operations. In these tasks, the quantity of material moved is not significant; precision within specified tolerances is the key focus. The manual methods for prod...

(This article belongs to the Special Issue Innovative and Intelligent Actuation for Heavy-Duty Applications)
  • Article
  • Open Access
1 Citations
1,039 Views
14 Pages

Advancing Mapping Strategies and Circuit Optimization for Signed Operations in Compute-in-Memory Architecture

  • Zhenjiao Chen,
  • Binghe Ma,
  • Feng Liang,
  • Qi Cao,
  • Yongqiang Wang,
  • Hang Chen,
  • Bin Lu and
  • Shang Wang

Compute-in-memory (CIM) is a key focus in chip design, with mapping strategies gaining attention. However, many studies overlook the arrangement of significant bits in weights and the influence of the input order of activation bits, which are key asp...

(This article belongs to the Section Circuit and Signal Processing)
  • Article
  • Open Access
392 Views
18 Pages

11 September 2026

We study the universal approximation properties of transformers and neural integral operators for operators in Banach spaces. In particular, we show that the transformer architecture is a universal approximator of integral operators between Höld...

(This article belongs to the Special Issue Functional Data Analysis and Its Application)
  • Article
  • Open Access
2,524 Views
29 Pages

6 February 2023

In this paper, under some new appropriate conditions imposed on the parameters and mappings involved in the proximal mapping associated with a general H-monotone operator, its Lipschitz continuity is proved and an estimate of its Lipschitz constant i...

(This article belongs to the Special Issue Fixed Point Theory and Its Applications in Nonlinear Analysis and Optimization)
  • Article
  • Open Access
1 Citations
920 Views
25 Pages

20 June 2025

This paper is concerned with the investigation of a nonlocal sequential multistrip boundary-value problem for fractional differential inclusions, involving (k1,ψ1)-Hilfer and (k2,ψ2)-Caputo fractional derivative operators, and (k2,ψ2)- Ri...

(This article belongs to the Special Issue Recent Investigations of Differential and Fractional Equations and Inclusions, 3rd Edition)
  • Article
  • Open Access
27 Citations
5,811 Views
21 Pages

The objective of this work was the development of a methodology to parametrize wire + arc additive manufacturing (WAAM), aiming dimension repeatability, and tolerances. Parametrization of WAAM is a difficult task, because multiple parameters are invo...

  • Article
  • Open Access
6 Citations
5,143 Views
14 Pages

The selection of appropriative geomedia attributes for constructing natural and suggestive perspective visualizations of historical non-cartometric manuscript topographic works is investigated, to enable an intuitive perception of relief landforms. T...

(This article belongs to the Special Issue Cartography and Geomedia)
  • Review
  • Open Access
12 Citations
3,525 Views
18 Pages

Vulnerability mapping of sea-coastal zones is an important element of oil spill response plans, environmental support for offshore projects, and the integrated management of the marine environment. The creation of such maps is a complex scientific pr...

(This article belongs to the Special Issue Marine Oil Spills 2018)
  • Article
  • Open Access
3,423 Views
21 Pages

3 October 2020

Ordinary differential equations with n-valued impulses are examined via the associated Poincaré translation operators from three perspectives: (i) the lower estimate of the number of periodic solutions on the compact subsets of Euclidean space...

(This article belongs to the Special Issue Dynamical Systems and Their Applications Methods)
  • Article
  • Open Access
1 Citations
1,528 Views
22 Pages

We investigate the topological degree for generalized monotone operators of class (S)+ with compact set-valued perturbations. It is assumed that perturbations can be represented as the composition of a continuous single-valued mapping and an upper se...

(This article belongs to the Special Issue Fixed Point Theory and Fractals)
  • Article
  • Open Access
23 Citations
2,917 Views
12 Pages

7 August 2023

We present a family of hypersurfaces of revolution distinguished by four parameters in the five-dimensional pseudo-Euclidean space E25. The matrices corresponding to the fundamental form, Gauss map, and shape operator of this family are computed. By...

(This article belongs to the Special Issue Advances in Differential Geometry and Its Applications)
  • Article
  • Open Access
2 Citations
2,516 Views
17 Pages

7 April 2021

Herein, we considered the Schrödinger operator with a potential q on a disk and the map that associates to q the corresponding Dirichlet-to-Neumann (DtN) map. We provide some numerical and analytical results on the range of this map and its stability...

(This article belongs to the Special Issue Mathematical Methods, Modelling and Applications)
  • Feature Paper
  • Article
  • Open Access
1 Citations
1,169 Views
15 Pages

Generating Ideals of Bloch Mappings via Pietsch’s Quotients

  • José F. Gálvez-Rodríguez and
  • David Ruiz-Casternado

24 January 2025

In this paper, we introduce the notion of the normalized Bloch left-hand quotient ideal A−1∘IB^, where A is an operator ideal and IB^ is a normalized Bloch ideal, as a nonlinear extension of the concept of the left-hand quotient of operat...

  • Article
  • Open Access
7 Citations
4,069 Views
19 Pages

13 February 2019

In this work, we study the inclusion problem of the sum of two monotone operators and the fixed-point problem of nonexpansive mappings in Hilbert spaces. We prove the weak and strong convergence theorems under some weakened conditions. Some numerical...

(This article belongs to the Special Issue Fixed Point Theory and Related Nonlinear Problems with Applications)
  • Article
  • Open Access
1 Citations
2,508 Views
14 Pages

25 November 2020

The Laplace operator on a Riemannian manifold plays an important role with eigenvalue problems and the spectral theory. Extending such an eigenvalue problem of smooth maps including the Gauss map, the notion of finite-type was introduced. The simples...

(This article belongs to the Special Issue Riemannian Geometry of Submanifolds)
  • Article
  • Open Access
411 Views
26 Pages

11 August 2026

Hydropower units often operate under complex conditions caused by water head change, guide-vane regulation, and load adjustment. These condition changes make it difficult to identify gradual performance degradation from monitoring signals alone. To s...

(This article belongs to the Section F1: Electrical Power System)

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