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5,525 Results Found

  • Article
  • Open Access
6 Citations
2,443 Views
21 Pages

Magnetic positioning is a promising technique for vehicles in global navigation satellite system (GNSS)-denied scenarios. In general, a fixed-length magnetic sequence is required to provide an initial positioning result, which means that users need t...

(This article belongs to the Section Systems & Control Engineering)
  • Article
  • Open Access
322 Views
20 Pages

31 July 2026

Reliable traffic scenario initialization is essential for autonomous driving simulation, safety evaluation, and scenario completion. Most learning-based initializers rely on high-definition map priors to constrain agent placement and attribute genera...

(This article belongs to the Section Transportation and Future Mobility)
  • Article
  • Open Access
20 Citations
10,062 Views
22 Pages

27 December 2016

This study investigates one notable result that the REDD+ (‘Reducing Emissions from Deforestation and forest Degradation, and enhancing forest carbon stocks and conservation’) initiative effected within Indonesia’s forest institutions. It argues that...

(This article belongs to the Special Issue REDD+ Crossroads Post Paris: Politics, Lessons and Interplays)
  • Article
  • Open Access
11 Citations
3,106 Views
19 Pages

Upgraded Low-Frequency 3D Lightning Mapping System in North China and Observations on Lightning Initiation Processes

  • Mingyuan Liu,
  • Xiushu Qie,
  • Zhuling Sun,
  • Rubin Jiang and ,
  • Hongbo Zhang,
  • Ruiling Chen,
  • Shanfeng Yuan,
  • Yu Wang and
  • Xiangke Liu
  • + 4 authors+ 0 author

30 April 2024

The three-dimensional (3D) low-frequency lightning mapping system (LF-LMS) in north China has been updated. The lightning electric field derivative (dE/dt) sensor and continuous acquisition mode has been newly designed to ensure a capability of entir...

(This article belongs to the Special Issue Advances in Instrumentation and Algorithms for Atmospheric Electricity Applications)
  • Article
  • Open Access
11 Citations
3,173 Views
20 Pages

27 April 2023

One of the most frequently used signaling techniques for initiating, sustaining, and dismissing sessions on the internet is a session initiation protocol (SIP). Currently, SIPs are gaining widespread applications in the human-centered Internet of Thi...

(This article belongs to the Special Issue Chaos-Based Secure Communication and Cryptography)
  • Article
  • Open Access
2 Citations
3,367 Views
23 Pages

Image reconstruction is an interesting yet challenging optimization problem that has several potential applications. The task is to reconstruct an image using a fixed number of transparent polygons. Traditional gradient-based algorithms cannot be app...

(This article belongs to the Special Issue Bio-Inspired Optimization Algorithms and Designs for Engineering Applications)
  • Article
  • Open Access
15 Citations
7,813 Views
15 Pages

Multipass Active Contours for an Adaptive Contour Map

  • Jeong Heon Kim,
  • Bo-Young Park,
  • Farhan Akram,
  • Byung-Woo Hong and
  • Kwang Nam Choi

15 March 2013

Isocontour mapping is efficient for extracting meaningful information from a biomedical image in a topographic analysis. Isocontour extraction from real world medical images is difficult due to noise and other factors. As such, adaptive selection of...

(This article belongs to the Special Issue Medical & Biological Imaging)
  • Article
  • Open Access
8 Citations
3,232 Views
21 Pages

27 April 2024

The traditional PID controller in quadrotor UAVs has poor performance, a large overshoot, and a long adjustment time, which limit its stability and accuracy in practical applications. In order to solve this problem, an improved whale optimization fuz...

(This article belongs to the Section Automation and Control Systems)
  • Article
  • Open Access
22 Citations
3,089 Views
14 Pages

Coexisting Infinite Orbits in an Area-Preserving Lozi Map

  • Houzhen Li,
  • Kexin Li,
  • Mo Chen and
  • Bocheng Bao

3 October 2020

Extreme multistability with coexisting infinite orbits has been reported in many continuous memristor-based dynamical circuits and systems, but rarely in discrete dynamical systems. This paper reports the finding of initial values-related coexisting...

(This article belongs to the Section Complexity)
  • Article
  • Open Access
4 Citations
2,197 Views
13 Pages

Influenced by the rapid development of artificial intelligence, the identification of chaotic systems with intelligent optimization algorithms has received widespread attention in recent years. This paper focuses on the intelligent information identi...

(This article belongs to the Special Issue Bifurcation, Chaos, and Fractals in Fractional-Order Electrical and Electronic Systems)
  • Article
  • Open Access
33 Citations
2,410 Views
11 Pages

Special Fractional-Order Map and Its Realization

  • Amina-Aicha Khennaoui,
  • Adel Ouannas,
  • Shaher Momani,
  • Othman Abdullah Almatroud and ,
  • Mohammed Mossa Al-Sawalha,
  • Salah Mahmoud Boulaaras and
  • Viet-Thanh Pham
  • + 2 authors+ 0 author

27 November 2022

Recent works have focused the analysis of chaotic phenomena in fractional discrete memristor. However, most of the papers have been related to simulated results on the system dynamics rather than on their hardware implementations. This work reports t...

  • Article
  • Open Access
2 Citations
1,300 Views
24 Pages

Due to their complexity and nonlinearity, metaheuristic algorithms have become the standard in problem solving for problems that cannot be solved by standard computational solutions. However, the global performance of these algorithms is strongly lin...

(This article belongs to the Section Intelligent Control and Machine Learning)
  • Article
  • Open Access
24 Citations
9,079 Views
14 Pages

Accurate and Robust Monocular SLAM with Omnidirectional Cameras

  • Shuoyuan Liu,
  • Peng Guo,
  • Lihui Feng and
  • Aiying Yang

16 October 2019

Simultaneous localization and mapping (SLAM) are fundamental elements for many emerging technologies, such as autonomous driving and augmented reality. For this paper, to get more information, we developed an improved monocular visual SLAM system by...

(This article belongs to the Special Issue Sensors and Sensing Technologies for Indoor Positioning and Indoor Navigation)
  • Article
  • Open Access
1 Citations
1,736 Views
12 Pages

13 April 2023

The purpose of the paper is to establish a sufficient condition for the existence of a solution to the equation T(u,C(u))=u using Kannan-type equicontractive mappings, T:A×C(A)¯→Y, where C is a compact mapping, A is a bounded, closed...

(This article belongs to the Special Issue Advances in Nonlinear Analysis, Analytic Number Theory, and Mathematical Inequalities)
  • Article
  • Open Access
10 Citations
5,403 Views
24 Pages

29 April 2019

The development and maturation of simultaneous localization and mapping (SLAM) in robotics opens the door to the application of a visual inertial odometry (VIO) to the robot navigation system. For a patrol robot with no available Global Positioning S...

(This article belongs to the Special Issue Visual Sensors)
  • Article
  • Open Access
6 Citations
3,188 Views
20 Pages

4 October 2023

Forecasts of the forest ecosystem dynamics are important for environmental protection and forest resource management. Such forecasts can support decisions about where and how to restore damaged forests and plan felling, and in forest conservation. Fo...

(This article belongs to the Section Forest Inventory, Modeling and Remote Sensing)
  • Article
  • Open Access
6 Citations
2,858 Views
25 Pages

14 January 2021

Time integration is commonly used to obtain accurate system responses, such as the limit cycle oscillations (LCOs) for an aeroelastic system with freeplay. However, the integrations that start with various initial conditions (I.C.s) are usually studi...

(This article belongs to the Special Issue Application of Non-linear Dynamics)
  • Article
  • Open Access
7 Citations
1,966 Views
31 Pages

22 June 2025

Path planning in complex environments presents a substantial research challenge for mobile robots. This study introduces an enhanced ant colony algorithm based on islands (EACI) for mobile robot path planning. First, the original map’s grid cel...

  • Article
  • Open Access
4 Citations
746 Views
20 Pages

Iterative Learning Fault Diagnosis of Fractional-Order Nonlinear Multi-Agent Systems with Initial State Learning and Switching Topology

  • Junjie Ma,
  • Xiaoxiao Xu,
  • Guangxu Wang,
  • Shuai Cai and ,
  • Xingyu Zhou and
  • Shuyu Zhang
  • + 1 author+ 0 author

This paper proposes an iterative learning framework for a class of fractional-order nonlinear multi-agent systems operating under directed iteration-varying switching topologies. To suppress trial-to-trial fluctuations in initial states, a P-type ini...

(This article belongs to the Special Issue Advances in Fractional-Order Chaotic and Complex Systems)
  • Article
  • Open Access
378 Views
49 Pages

16 September 2026

Metaheuristic optimizers often suffer from premature convergence, diversity loss, and stagnation in complex search landscapes. This study proposes HCQ-SGuA, a plant-growth-inspired framework that strengthens the Sowing phase through structured popula...

(This article belongs to the Section Biological Optimisation and Management)
  • Article
  • Open Access
8 Citations
3,123 Views
18 Pages

Adaptive Feature Map-Guided Well-Log Interpolation

  • Lingqian Wang,
  • Hui Zhou and
  • Hanming Chen

12 January 2023

As an irreplaceable quantitative interpretation method, prestack seismic inversion enables the effective estimation of subsurface elastic parameters for reservoir prediction. However, for the model-driven prestack seismic inversion, the band-limited...

(This article belongs to the Special Issue Geophysical Data Processing in Remote Sensing Imagery)
  • Article
  • Open Access
1 Citations
497 Views
22 Pages

To address node redundancy and coverage holes in Wireless Sensor Network (WSN) deployment, this paper proposes an Improved Northern Goshawk Optimization (INGO) algorithm with multiple enhancements. It integrates a Diverse Chaotic Map Initialization S...

(This article belongs to the Section Engineering)
  • Article
  • Open Access
10 Citations
467 Views
24 Pages

This paper develops a unified qualitative framework for four classes of Liouville–Caputo fractional difference equations arising from different combinations of fractional sums and integer-order differences. Based on the equivalence between init...

(This article belongs to the Special Issue Advances in Boundary Value Problems for Fractional Differential Equations, 4th Edition)
  • Article
  • Open Access
6 Citations
2,275 Views
31 Pages

MISAO: Ultra-Short-Term Photovoltaic Power Forecasting with Multi-Strategy Improved Snow Ablation Optimizer

  • Xu Zhang,
  • Jun Ye,
  • Shenbing Ma,
  • Lintao Gao and ,
  • Hui Huang and
  • Qiman Xie
  • + 1 author+ 0 author

19 August 2024

The increase in installed PV capacity worldwide and the intermittent nature of solar resources highlight the importance of power prediction for grid integration of this technology. Therefore, there is an urgent need for an effective prediction model,...

  • Article
  • Open Access
8 Citations
8,981 Views
21 Pages

Building a Cadastral Map of Europe through the INSPIRE and Other Related Initiatives

  • Vlado Cetl,
  • Sanja Šamanović,
  • Olga Bjelotomić Oršulić and
  • Anka Lisec

22 July 2023

Digital cadastral maps with accompanying land-related attributes have become a fundamental dataset for many application fields, e.g., spatial planning and development, protecting state lands, securing of land tenure, facilitating land reforms, agricu...

(This article belongs to the Special Issue New Insights in Integrated Land Management)
  • Article
  • Open Access
38 Citations
5,457 Views
21 Pages

27 January 2019

Chaos theory has applications in several disciplines and is focusing on the behavior of dynamical systems that are highly sensitive to initial conditions. Chaotic dynamics are the impromptu behavior displayed by some nonlinear dynamical frameworks an...

  • Article
  • Open Access
3 Citations
2,460 Views
20 Pages

22 December 2024

Handheld LiDAR scanners, which typically consist of a LiDAR sensor, Inertial Measurement Unit, and processor, enable data capture while moving, offering flexibility for various applications, including indoor and outdoor 3D mapping in fields such as a...

(This article belongs to the Section Sensors and Robotics)
  • Article
  • Open Access
12 Citations
5,638 Views
17 Pages

23 September 2020

Although land forms the basis for marginal livelihoods in Sub-Saharan Africa, the asset is more strategic for women as they usually hold derived and dependent rights to land in customary tenure areas. Initiatives to secure women’s land tenure i...

(This article belongs to the Special Issue Land, Innovation, and Social Good)
  • Review
  • Open Access
1 Citations
2,321 Views
18 Pages

Initiatives of Female Empowerment in Computing Implemented at the High School Level: A Systematic Mapping

  • Ramayane Bonacin Braga,
  • Mirelle Amaral de São Bernardo,
  • Sara Luiz de Farias,
  • Thalia Santos de Santana and
  • Marcos de Moraes Sousa

30 August 2024

Gender disparities in technology are evident, and affirmative actions are necessary to increase female representation. This article is part of an umbrella project that systematically maps related studies and aims to understand the current literature...

(This article belongs to the Special Issue Gender and Class: Exploring the Intersections of Power and Inequality)
  • Article
  • Open Access
78 Citations
24,598 Views
22 Pages

Inundation Mapping Initiatives of the Iowa Flood Center: Statewide Coverage and Detailed Urban Flooding Analysis

  • Daniel Gilles,
  • Nathan Young,
  • Harvest Schroeder,
  • Jesse Piotrowski and
  • Yi-Jia Chang

16 January 2012

The State of Iowa, located in the Midwestern United States, has experienced an increased frequency of large floods in recent decades. After extreme flooding in the summer of 2008, the Iowa Flood Center (IFC) was established for advanced research and...

(This article belongs to the Special Issue Flood Risk Management)
  • Article
  • Open Access
8 Citations
4,727 Views
20 Pages

14 July 2024

Over recent decades, the sustainable use of non-timber forest products (NTFPs) has offered the promise of reconciling the dilemma between forest conservation and economic development, generating income for local populations. Accordingly, since the 19...

(This article belongs to the Section Bioeconomy of Sustainability)
  • Article
  • Open Access
8 Citations
3,734 Views
24 Pages

An Application of an Initial Full Value of Vaccine Assessment Methodology to Measles-Rubella MAPs for Use in Low- and Middle-Income Countries

  • Melissa Ko,
  • Collrane Frivold,
  • Mercy Mvundura,
  • Adam Soble and ,
  • Christopher Gregory,
  • Hans Christiansen,
  • Mateusz Hasso-Agopsowicz,
  • Han Fu,
  • Mark Jit and
  • Jean-Pierre Amorij
  • + 14 authors+ 9 authors

19 September 2024

Measles and rubella micro-array patches (MR-MAPs) are a promising innovation to address limitations of the current needle and syringe (N&S) presentation due to their single-dose presentation, ease of use, and improved thermostability. To direct a...

(This article belongs to the Special Issue Estimating Vaccines' Value and Impact)
  • Article
  • Open Access
11 Citations
4,721 Views
26 Pages

Critical Continuous Rainfall Map for Forecasting Shallow Landslide Initiations in Busan, Korea

  • Joon-Young Park,
  • Seung-Rae Lee,
  • Seboong Oh,
  • Jung Hyun Lee and ,
  • Jun-Seo Jeon,
  • Young-Suk Song and
  • Hyun-Su Park
  • + 2 authors+ 0 author

27 August 2020

In recent years, precipitation patterns in Korea have shifted to be characterized as short and intense rainfalls. In consideration of shallow landslide initiations primarily governed by heavy rainfalls at short-time scales that diminish drainage effe...

(This article belongs to the Section Hydrology)
  • Article
  • Open Access
260 Views
18 Pages

Initial Experimental Demonstration of Microwave Imaging for Mapping Leakage-Induced Subsurface Anomalies

  • Jingjing Liu,
  • Jinliang Gao,
  • Pengcheng Wang,
  • Lingbo Qiao and
  • Yayun Cheng

14 October 2026

The detection and spatial assessment of buried water pipeline leaks are critical for preventing resource loss and geohazards such as soil erosion and subsidence. This paper presents an initial experimental demonstration of a microwave imaging system...

(This article belongs to the Special Issue Next-Generation GPR Imaging and AI-Powered Subsurface Geospatial Analysis)
  • Article
  • Open Access
5 Citations
6,400 Views
19 Pages

DepthCloud2Point: Depth Maps and Initial Point for 3D Point Cloud Reconstruction from a Single Image

  • Galana Fekadu Asafa,
  • Shengbing Ren,
  • Sheikh Sohan Mamun and
  • Kaleb Amsalu Gobena

Reconstructing 3D objects from single-view images has acquired significant interest due to their wide-ranging applications in robotics, autonomous vehicles, virtual reality, and augmented reality. Current methods, including voxel-based and point clou...

(This article belongs to the Special Issue 3D Computer Vision and 3D Reconstruction)
  • Review
  • Open Access
3 Citations
4,997 Views
28 Pages

16 October 2025

This study maps the landscape of initial teacher education (ITE) research in Central Asia and its positioning within global academic discourse between 2004 and 2024. Drawing on a systematic scoping review of 144 publications conducted using the PRISM...

(This article belongs to the Section Teacher Education)
  • Article
  • Open Access
11 Citations
9,070 Views
18 Pages

The Application of an Emerging Technique for Protein–Protein Interaction Interface Mapping: The Combination of Photo-Initiated Cross-Linking Protein Nanoprobes with Mass Spectrometry

  • Renata Ptáčková,
  • Tomáš Ječmen,
  • Petr Novák,
  • Jiří Hudeček and ,
  • Marie Stiborová and
  • Miroslav Šulc
  • + 1 author+ 0 author

26 May 2014

Protein–protein interaction was investigated using a protein nanoprobe capable of photo-initiated cross-linking in combination with high-resolution and tandem mass spectrometry. This emerging experimental approach introduces photo-analogs of amino ac...

(This article belongs to the Collection Computational, Structural and Spectroscopic Studies of Enzyme Mechanisms, Inhibition and Dynamics)
  • Review
  • Open Access
1,226 Views
24 Pages

Mapping the Evidence on Food Security Outcomes and Initiatives Among Climate Refugees: A Scoping Review

  • Odette Wills,
  • MacKenzie Kerr,
  • Mohammad Reza Pakravan-Charvadeh,
  • Zoe Longworth and ,
  • Mojtaba Shafiee and
  • Hassan Vatanparast
  • + 1 author+ 0 author

21 February 2026

The increasing severity of climate change poses profound challenges to global food security, particularly affecting vulnerable populations such as migrants and refugees. This scoping review examines the nexus between climate change, food security, an...

(This article belongs to the Section Food Security and Sustainability)
  • Article
  • Open Access
2 Citations
2,621 Views
23 Pages

3 February 2023

The aim of optimization methods is to identify the best results in the search area. In this research, we focused on a mixture of the interior point method, opposite gradient method, and mean-variance mapping optimization, named IPOG-MVMO, where the s...

(This article belongs to the Special Issue Reinventing Processes for Sustainability via Process Intensification and Integration)
  • Article
  • Open Access
32 Citations
2,990 Views
19 Pages

Hidden Homogeneous Extreme Multistability of a Fractional-Order Hyperchaotic Discrete-Time System: Chaos, Initial Offset Boosting, Amplitude Control, Control, and Synchronization

  • Amina-Aicha Khennaoui,
  • Adel Ouannas,
  • Stelios Bekiros,
  • Ayman A. Aly and ,
  • Ahmed Alotaibi,
  • Hadi Jahanshahi and
  • Hajid Alsubaie
  • + 2 authors+ 0 author

3 January 2023

Fractional order maps are a hot research topic; many new mathematical models are suitable for developing new applications in different areas of science and engineering. In this paper, a new class of a 2D fractional hyperchaotic map is introduced usin...

(This article belongs to the Special Issue Symmetry: Recent Developments in Engineering Science and Applications)
  • Article
  • Open Access
36 Citations
10,558 Views
16 Pages

Health Vulnerability Index for Disaster Risk Reduction: Application in Belt and Road Initiative (BRI) Region

  • Emily Yang Ying Chan,
  • Zhe Huang,
  • Holly Ching Yu Lam,
  • Carol Ka Po Wong and
  • Qiang Zou

Despite the importance of health vulnerability in disaster risk assessment, most of the existing disaster vulnerability indicators only emphasize economic and social vulnerability. Important underlying health risks such as non-communicable disease ar...

(This article belongs to the Special Issue Health-Related Emergency Disaster Risk Management (Health-EDRM))
  • Article
  • Open Access
5 Citations
4,684 Views
11 Pages

To assess wind resources, a number of simulations should be performed by wind direction, wind speed, and atmospheric stability bins to conduct micro-siting using computational fluid dynamics (CFD). This study proposes a method of accelerating CFD con...

(This article belongs to the Special Issue Computational Methods in Wind Engineering)
  • Article
  • Open Access
2 Citations
3,099 Views
20 Pages

Digital System Performance Enhancement of a Tent Map-Based ADC for Monitoring Photovoltaic Systems

  • Philippa Hazell,
  • Peter Mather,
  • Andrew Longstaff and
  • Simon Fletcher

22 September 2020

Efficient photovoltaic installations require control systems that detect small signal variations over large measurement ranges. High measurement accuracy requires data acquisition systems with high-resolution analogue-to-digital converters; however,...

(This article belongs to the Section Power Electronics)
  • Article
  • Open Access
151 Citations
3,308 Views
43 Pages

CTOA: Toward a Chaotic-Based Tumbleweed Optimization Algorithm

  • Tsu-Yang Wu,
  • Ankang Shao and
  • Jeng-Shyang Pan

17 May 2023

Metaheuristic algorithms are an important area of research in artificial intelligence. The tumbleweed optimization algorithm (TOA) is the newest metaheuristic optimization algorithm that mimics the growth and reproduction of tumbleweeds. In practice,...

(This article belongs to the Special Issue Artificial Intelligence and Natural Computing: Theory, Methodology and Applications)
  • Article
  • Open Access
1 Citations
2,476 Views
10 Pages

25 July 2024

The close conceptual links between symbolic death, rebirth, and pilgrimage are widely known to modern sociologists and anthropologists and can be observed in several modern pilgrimage traditions. This study argues that the same connections can alread...

(This article belongs to the Special Issue Travel and Religion in the Ancient Mediterranean)
  • Article
  • Open Access
16 Citations
1,525 Views
9 Pages

Language Mapping Using T2-Prepared BOLD Functional MRI in the Presence of Large Susceptibility Artifacts—Initial Results in Patients With Brain Tumor and Epilepsy

  • Jun Hua,
  • Xinyuan Miao,
  • Shruti Agarwal,
  • Chetan Bettegowda and ,
  • Alfredo Quiñones-Hinojosa,
  • John Laterra,
  • Peter C. M. Van Zijl,
  • James J. Pekar and
  • Jay J. Pillai
  • + 4 authors+ 0 author

1 June 2017

At present, presurgical functional mapping is the most prevalent clinical application of functional magnetic resonance imaging (fMRI). Signal dropouts and distortions caused by susceptibility effects in the current standard echo planar imaging (EPI)-...

  • Perspective
  • Open Access
21 Citations
7,236 Views
14 Pages

29 May 2024

The global momentum towards hydrogen has led to various initiatives aimed at harnessing hydrogen’s potential. In particular, low-carbon hydrogen is recognized for its crucial role in reducing greenhouse gas emissions across hard-to-abate sector...

(This article belongs to the Special Issue Hydrogen-Based Energy Systems for Sustainable Transportation)
  • Article
  • Open Access
3 Citations
2,525 Views
26 Pages

Mapping of Some Further Alkylation-Initiated Pathways to Polyheterocyclic Compounds from Indigo and Indirubin

  • Sarfaraz Ali,
  • Patrick M. McCosker,
  • Anthony C. Willis,
  • Stephen G. Pyne and ,
  • Christopher Richardson,
  • John B. Bremner and
  • Paul A. Keller
  • + 2 authors+ 0 author

6 September 2024

The reaction of indigo with two equivalents of the electrophile ethyl bromoacetate with caesium carbonate as a base result in the formation of structurally complex polyheterocyclics, including a fused spiroimidazole and a spiro[1,3]oxazino derivative...

(This article belongs to the Section Organic Chemistry)
  • Article
  • Open Access
3 Citations
3,872 Views
15 Pages

Mapping Is Caring: Fostering Forest Preservation through Young Orang Rimba Initiatives

  • Anang Widhi Nirwansyah,
  • Bianca Inez-Pedro,
  • Abdel Mandili,
  • Suwarno and
  • Elly Hasan Sadeli

7 September 2023

The UN Convention on the Rights of the Child, Article 12, states that young people should be able to participate in issues that affect them. In this study, the indigenous Orang Rimba community examines the natural resources of their area through mapp...

  • Article
  • Open Access
4 Citations
10,241 Views
27 Pages

19 October 2025

Launched in 2013, China’s Belt and Road Initiative (BRI) was originally devised to link East Asia and Europe through a network of physical and digital infrastructure. This article analyses the BRI’s development in the European context by...

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