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25 pages, 1498 KiB  
Article
Fostering Continuous Innovation in Creative Education: A Multi-Path Configurational Analysis of Continuous Collaboration with AIGC in Chinese ACG Educational Contexts
by Juan Huangfu, Ruoyuan Li, Junping Xu and Younghwan Pan
Sustainability 2025, 17(1), 144; https://doi.org/10.3390/su17010144 (registering DOI) - 27 Dec 2024
Viewed by 374
Abstract
AI-generated content (AIGC) is uniquely positioned to drive the digital transformation of professional education in the animation, comic, and game (ACG) industries. However, its collaborative application also faces initial novelty effects and user discontinuance. Existing studies often employ single-variable analytical methods, which struggle [...] Read more.
AI-generated content (AIGC) is uniquely positioned to drive the digital transformation of professional education in the animation, comic, and game (ACG) industries. However, its collaborative application also faces initial novelty effects and user discontinuance. Existing studies often employ single-variable analytical methods, which struggle to capture the complex mechanisms influencing technology adoption. This study innovatively combines necessary condition analysis (NCA) and fuzzy-set qualitative comparative analysis (fsQCA) and applies them to the field of ACG education. Using this mixed-method approach, it systematically explores the necessary conditions and configurational effects influencing educational users’ continuance intention to adopt AIGC tools for collaborative design learning, aiming to address existing research gaps. A survey of 312 Chinese ACG educational users revealed that no single factor constitutes a necessary condition for their continuance intention to adopt AIGC tools. Additionally, five pathways leading to high adoption intention and three pathways leading to low adoption intention were identified. Notably, the absence or insufficiency of task–technology fit, and perceived quality do not hinder ACG educational users’ willingness to actively adopt AIGC tools. This reflects the creativity-driven learning characteristics, and the flexible and diverse tool demands of the ACG discipline. The findings provide theoretical and empirical insights to enhance the effective synergy and sustainable development between ACG education and AIGC tools. Full article
(This article belongs to the Special Issue Artificial Intelligence in Education and Sustainable Development)
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<p>AIGC in ACG production.</p>
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<p>Conceptual framework.</p>
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<p>The process of NCA and fsQCA analysis.</p>
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26 pages, 3399 KiB  
Article
Embrace the Era of Drones: A New Practical Design Approach to Emergency Rescue Drones
by Zhiyuan Wang, Ke Yang, Yonggang Wang, Zechen Zhu and Xiuli Liang
Appl. Sci. 2025, 15(1), 135; https://doi.org/10.3390/app15010135 - 27 Dec 2024
Viewed by 169
Abstract
To increase user satisfaction with emergency rescue drone products, a product modelling design method based on the fuzzy Kano-QFD-FBS model is proposed. First, the initial user requirements for the emergency rescue drone products are obtained through a questionnaire, and the fuzzy Kano model [...] Read more.
To increase user satisfaction with emergency rescue drone products, a product modelling design method based on the fuzzy Kano-QFD-FBS model is proposed. First, the initial user requirements for the emergency rescue drone products are obtained through a questionnaire, and the fuzzy Kano model is utilised and combined with the better–worse coefficient method to categorise the attributes, define the priorities of the user requirements, and screen out the key user requirements. Second, the QFD model is used to construct the quality house, analyse the key user requirements quantitatively, and obtain the design elements and weights of the emergency rescue drone product. The obtained key design elements are subsequently imported into the FBS model to complete the mapping transformation from the functional elements to the structural elements of the emergency rescue drone products and realise the styling design of the emergency rescue drone products. Finally, the user satisfaction scale based on appearance, functionality, and interaction was developed and the System Usability Scale (SUS) was used to evaluate user satisfaction with the emergency rescue drone design scheme. The new design scheme scored higher and showed significant differences in satisfaction ratings compared to the previous scheme. Hefei Jiaxun Technology Co., Ltd. carried out product development for the design scheme. At present, physical products have been sold on the market and have achieved good results. Hefei Jiaxun Technology Co., Ltd. conducted a survey on consumer satisfaction with this product, and the results revealed that customer satisfaction increased by 11.9% compared with that of previous products. Compared with similar products in the market, the consumer satisfaction with this product increased by 13.5%, indicating that it has obvious market competitiveness. This study shows that the method of product styling design based on the fuzzy Kano-QFD-FBS model can comprehensively acquire and analyse user requirements, realise accurate mapping from user requirements to product design elements, and output the specific solution of the emergency rescue drone product styling design. The design scheme performs well in meeting user requirements, verifies the feasibility and effectiveness of the fuzzy Kano-QFD-FBS model in the styling design study of emergency rescue drones, and provides a new paradigm for emergency rescue product design. Full article
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<p>Framework of the basic content of the paper.</p>
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<p>Kano model framework.</p>
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<p>QFD model framework.</p>
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<p>The situated FBS model framework.</p>
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<p>Relationship matrix between user requirements and design elements.</p>
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<p>Relationship matrix of emergency rescue Drones.</p>
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<p>Function–behaviour–structure mapping.</p>
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<p>Emergency rescue drone renderings from different angles.</p>
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<p>SUS test results.</p>
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22 pages, 4152 KiB  
Article
Multi-Objective Operation Optimization of Park Microgrid Based on Green Power Trading Price Prediction in China
by Xiqin Li, Zhiyuan Zhang, Yang Jiang, Xinyu Yang, Yuyuan Zhang, Wei Li and Baosong Wang
Energies 2025, 18(1), 46; https://doi.org/10.3390/en18010046 - 26 Dec 2024
Viewed by 349
Abstract
The dual-carbon objective aspires to enhance China’s medium- and long-term green power trading and facilitate the low-carbon economic operation of park microgrids from both medium- and long-term and spot market perspectives. First, the integration of medium- and long-term green power trading with spot [...] Read more.
The dual-carbon objective aspires to enhance China’s medium- and long-term green power trading and facilitate the low-carbon economic operation of park microgrids from both medium- and long-term and spot market perspectives. First, the integration of medium- and long-term green power trading with spot trading was meticulously analyzed, leading to the formulation of a power purchase strategy for park microgrid operators. Subsequently, a sophisticated Bayesian fuzzy learning method was employed to simulate the interaction between supply and demand, enabling the prediction of the price for bilaterally negotiated green power trading. Finally, a comprehensive multi-objective optimization model was established for the synergistic operation of park microgrid in the medium- and long-term green power and spot markets. This model astutely considers factors such as green power trading, distributed photovoltaic generation, medium- and long-term thermal power decomposition, energy storage systems, and power market dynamics while evaluating both economic and environmental benefits. The Levy-based improved bird-flocking algorithm was utilized to address the multi-faceted problem. Through rigorous computational analysis and simulation of the park’s operational processes, the results demonstrate the potential to optimize user power consumption structures, reduce power purchase costs, and promote the green and low-carbon transformation of the park. Full article
(This article belongs to the Section C: Energy Economics and Policy)
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<p>The microgrid structure and power purchase transaction mode of the park.</p>
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<p>Schematic diagram of the electrical energy composition of the park.</p>
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<p>Green electricity transaction price prediction process based on supply–demand collaborative bargaining game.</p>
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<p>Microgrid optimization process based on improved bird-flocking algorithm.</p>
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<p>Convergence curves of the proposed algorithm with the BSA.</p>
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<p>Spot market electricity prices and green electricity trading prices.</p>
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<p>Park load and distributed photovoltaic, medium- and long-term thermal power decomposition power.</p>
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<p>Electricity load balance curve considering carbon emission metrics.</p>
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<p>Electricity load balance curve without considering carbon emission indicators.</p>
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<p>Comparison of the proportion of green electricity.</p>
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20 pages, 11023 KiB  
Article
Study of Drought Characteristics and Atmospheric Circulation Mechanisms via a “Cloud Model”, Inner Mongolia Autonomous Region, China
by Sinan Wang, Henglu Miao, Yingjie Wu, Wei Li and Mingyang Li
Agronomy 2025, 15(1), 24; https://doi.org/10.3390/agronomy15010024 - 26 Dec 2024
Viewed by 241
Abstract
Droughts are long-term natural disasters and encompass many unknown factors. Herein, yearly and seasonal standardized precipitation evapotranspiration index (SPEI) values were calculated by analyzing monthly temperature and precipitation data from 1971 to 2020. A cloud model was employed to obtain the spatiotemporal variations [...] Read more.
Droughts are long-term natural disasters and encompass many unknown factors. Herein, yearly and seasonal standardized precipitation evapotranspiration index (SPEI) values were calculated by analyzing monthly temperature and precipitation data from 1971 to 2020. A cloud model was employed to obtain the spatiotemporal variations in the yearly distribution of drought weather. The cross-wavelet transform results revealed the relationship between the SPEI and atmospheric circulations. The results indicated that the average reduction rates of the SPEI-3 and SPEI-12 in Yinshanbeilu were 0.091 and 0.065 yr−1, respectively, and the annual drought occurrence frequency reached 30.37%. The annual station ratio and drought intensity showed increasing trends, whereas the degree of drought slightly decreased. The overall drought conditions indicated an increasing trend, the entropy (En) and hyper entropy (He) values demonstrated increasing trends, and the expectation (Ex) showed a downward trend. The fuzziness and randomness of the drought distribution were relatively low, and the certainty of drought was relatively easy to measure. The variation in the drought distribution was relatively low. There were resonance cycles between the SPEI and various teleconnection factors. The Pacific Decadal Oscillation (PDO) and the El Niño–Southern Oscillation (ENSO) exhibited greater resonance interactions with the SPEI than did other teleconnection factors. The cloud model exhibits satisfactory application prospects in Yinshanbeilu and provides a systematic basis for early warning, prevention, and reduction in drought disasters in this region. Full article
(This article belongs to the Special Issue Advances in Grassland Productivity and Sustainability — 2nd Edition)
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<p>Geographic location of the study area. (<b>a</b>) Digital elevation model, (<b>b</b>) land use types (MDL: Madooula; ZRH: Zhurihe; WLTZQ: Wulatezhongq; DMQ: Damaoqi; SZWQ: Siziwangqi; HD: Huade; BT: Baotou; HHHT: Huhehaote; JN: Jinin; LH: Linhe; DL: Duolun).</p>
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<p>Research flowchart.</p>
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<p>Spatial variation trend and significance distribution plots of the SPEI. (<b>a</b>) SPEI-3 trend, (<b>b</b>) SPEI-12 trend, (<b>c</b>) SPEI-3 significance, and (<b>d</b>) SPEI-12 significance.</p>
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<p>Spatial distribution of the drought frequency. (<b>a</b>) Year, (<b>b</b>) spring, (<b>c</b>) summer, (<b>d</b>) autumn, and (<b>e</b>) winter.</p>
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<p>Drought station subratios. (<b>a</b>) Year, (<b>b</b>) spring, (<b>c</b>) summer, (<b>d</b>) autumn, and (<b>e</b>) winter.</p>
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<p>Drought intensity. (<b>a</b>) Year, (<b>b</b>) spring, (<b>c</b>) summer, (<b>d</b>) autumn, and (<b>e</b>) winter.</p>
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<p>Temporal variation trends of the cloud eigenvalues from 1971 to 2020. (<b>a</b>) Ex, (<b>b</b>) En and (<b>c</b>) He.</p>
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<p>SPEI affiliation cloud maps for the typical sites and years. (<b>a</b>) Hailisu, (<b>b</b>) Wulatezhongqi, (<b>c</b>) Baotou, (<b>d</b>) 1971, (<b>e</b>) 2000, (<b>f</b>) 2007.</p>
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<p>SPEI affiliation cloud maps for the typical sites and years. Cross-wavelet energy spectra (ENSO, PDO, AO, and sunspot indices). Note: The arrows indicate the remote correlation factors and the relative phase relationships between the ENSO, PDO, AO, sunspot indices, and drought. The arrows to the right indicate that the change phase between them is consistent with that of drought, i.e., there exists a positive correlation between the two. The arrows to the left indicate that the change phase is the opposite of that of drought, i.e., there exists a negative correlation between the two.</p>
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<p>Cross-wavelet cohesion spectra (ENSO, PDO, AO, and sunspot indices).</p>
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25 pages, 608 KiB  
Review
Fuzzy Neural Network Applications in Biomass Gasification and Pyrolysis for Biofuel Production: A Review
by Vladimir Bukhtoyarov, Vadim Tynchenko, Kirill Bashmur, Oleg Kolenchukov, Vladislav Kukartsev and Ivan Malashin
Energies 2025, 18(1), 16; https://doi.org/10.3390/en18010016 - 24 Dec 2024
Viewed by 273
Abstract
The increasing demand for sustainable energy has spurred interest in biofuels as a renewable alternative to fossil fuels. Biomass gasification and pyrolysis are two prominent thermochemical conversion processes for biofuel production. While these processes are effective, they are often influenced by complex, nonlinear, [...] Read more.
The increasing demand for sustainable energy has spurred interest in biofuels as a renewable alternative to fossil fuels. Biomass gasification and pyrolysis are two prominent thermochemical conversion processes for biofuel production. While these processes are effective, they are often influenced by complex, nonlinear, and uncertain factors, making optimization and prediction challenging. This study highlights the application of fuzzy neural networks (FNNs)—a hybrid approach that integrates the strengths of fuzzy logic and neural networks—as a novel tool to address these challenges. Unlike traditional optimization methods, FNNs offer enhanced adaptability and accuracy in modeling nonlinear systems, making them uniquely suited for biomass conversion processes. This review not only highlights the ability of FNNs to optimize and predict the performance of gasification and pyrolysis processes but also identifies their role in advancing decision-making frameworks. Key challenges, benefits, and future research opportunities are also explored, showcasing the transformative potential of FNNs in biofuel production. Full article
(This article belongs to the Special Issue New Trends in Biofuels and Bioenergy for Sustainable Development II)
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<p>Keyword co-occurrence map for research on FNNs and biofuel, generated using VOSviewer.</p>
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<p>Flowchart illustrating the process of predicting syngas composition using an FNN. The diagram outlines the sequential steps from input data collection through fuzzification, rule generation, and model training, to the final prediction of syngas components (CO, H<sub>2</sub>, CO<sub>2</sub>, CH<sub>4</sub>).</p>
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<p>FNN applications for biofuel production.</p>
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12 pages, 286 KiB  
Article
Artificial Empathy and Imprecise Communication in a Multi-Agent System
by Joanna Siwek, Konrad Pierzyński, Przemysław Siwek, Adrian Wójcik and Patryk Żywica
Appl. Sci. 2025, 15(1), 8; https://doi.org/10.3390/app15010008 - 24 Dec 2024
Viewed by 211
Abstract
This paper introduces a novel artificial intelligence model that integrates artificial empathy into the decision-making processes of collaborative agent systems. The existing models of collaborative behaviors, especially in swarm applications, lack the aspect of empathy, known to improve cooperation in human teams. Emphasizing [...] Read more.
This paper introduces a novel artificial intelligence model that integrates artificial empathy into the decision-making processes of collaborative agent systems. The existing models of collaborative behaviors, especially in swarm applications, lack the aspect of empathy, known to improve cooperation in human teams. Emphasizing both cognitive and emotional aspects of empathy, the introduced model navigates communication uncertainties and ambiguities, transforming these challenges into opportunities for learning and adaptation in dynamic environments. A significant feature of this model is its handling of imprecision through fuzzy logic, using fuzzy similarity measures in the decision process. The main objective of the presented research is to introduce a new model for improving cooperativeness in multi-agent systems with the use of cognitive empathy. Future research focus on implementing the model on physical platform and optimize the artificial empathy algorithms in the decision-making module. Full article
(This article belongs to the Special Issue Application of Computer Science in Mobile Robots II)
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<p>Overview of the decision-making scheme of the proposed model from a learning perspective.</p>
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23 pages, 13780 KiB  
Article
Intuitionistic Fuzzy Set Guided Fast Fusion Transformer for Multi-Polarized Petrographic Image of Rock Thin Sections
by Bowei Chen, Bo Yan, Wenqiang Wang, Wenmin He, Yongwei Wang, Lei Peng, Andong Wang and Li Chen
Symmetry 2024, 16(12), 1705; https://doi.org/10.3390/sym16121705 - 23 Dec 2024
Viewed by 316
Abstract
The fusion of multi-polarized petrographic images of rock thin sections involves the fusion of feature information from microscopic images of rock thin sections illuminated under both plane-polarized and orthogonal-polarized light. During the fusion process of rock thin section images, the inherent high resolution [...] Read more.
The fusion of multi-polarized petrographic images of rock thin sections involves the fusion of feature information from microscopic images of rock thin sections illuminated under both plane-polarized and orthogonal-polarized light. During the fusion process of rock thin section images, the inherent high resolution and abundant feature information of the images pose substantial challenges in terms of computational complexity when dealing with massive datasets. In engineering applications, to ensure the quality of image fusion while meeting the practical requirements for high-speed processing, this paper proposes a novel fast fusion Transformer. The model leverages a soft matching algorithm based on intuitionistic fuzzy sets to merge redundant tokens, effectively mitigating the negative effects of asymmetric dependencies between tokens. The newly generated artificial tokens serve as brokers for the Query (Q), forming a novel lightweight fusion strategy. Both subjective visual observations and quantitative analyses demonstrate that the Transformer proposed in this paper is comparable to existing fusion methods in terms of performance while achieving a notable enhancement in its inference efficiency. This is made possible by the attention paradigm, which is equivalent to a generalized form of linear attention, and the newly designed loss function. The model has been experimented on with multiple datasets of different rock types and has exhibited robust generalization capabilities. It provides potential for future research in diverse geological conditions and broader application scenarios. Full article
(This article belongs to the Section Computer)
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<p>Thin section images of rocks of different species and polarization modes with a scaling dimension of 500 micrometer.</p>
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<p>Structure of the proposed fast rock thin sections image fusion broker Transformer.</p>
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<p>The diagrams on the <b>left</b> and <b>right</b> are respectively the schematic representations of the broker attention module and the linear attention module.</p>
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<p>The demonstration of the fusion process of various types of rock thin section images. Each row represents a set of rock data, while each column corresponds to an image category. “Pp” and “Op” are abbreviations for “plane-polarized” and “orthogonal polarization”, respectively. The small red circles represent feature markers that have been detected.</p>
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<p>The fusion results of images of dacitic crystal–lithic–vitric welded tuff by different models. (<b>a</b>) Nestfuse. (<b>b</b>) SEDRFuse. (<b>c</b>) DDcGAN. (<b>d</b>) DenseFuse. (<b>e</b>) DIDFuse. (<b>f</b>) U2Fusion. (<b>g</b>) STDFusion. (<b>h</b>) Our proposed model. The small red boxes are areas of significant difference that have been selected. The larger box is a zoomed-in display of the area, for a clearer comparison of the fusion effect.</p>
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<p>The fusion results of granite images by different models. (<b>a</b>) Nestfuse. (<b>b</b>) SEDRFuse. (<b>c</b>) DDcGAN. (<b>d</b>) DenseFuse. (<b>e</b>) DIDFuse. (<b>f</b>) U2Fusion. (<b>g</b>) STDFusion. (<b>h</b>) Our proposed model. The small red boxes are areas of significant difference that have been selected. The larger box is a zoomed-in display of the area, for a clearer comparison of the fusion effect.</p>
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<p>Fusion results for high- and low-resolution images: (<b>a</b>–<b>d</b>) show fused images with a resolution of 480 × 384, while (<b>e</b>–<b>h</b>) show fused images with a resolution of 1280 × 1024.</p>
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<p>Feature matching results: (<b>a</b>–<b>d</b>) show images with a resolution of 1280 × 1024, while (<b>e</b>–<b>h</b>) represent images with a resolution of 480 × 384. Red lines indicate correctly matched feature pairs.</p>
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<p>Correlation between the estimated spatial error and the Dice coefficient in three attention mechanisms: (<b>a</b>) Softmax, (<b>b</b>) Linear, and (<b>c</b>) Broker.</p>
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<p>Comparison of cumulative probability distributions for different loss functions on image fusion performance. The metrics represented by each graph are: (<b>a</b>) MI, (<b>b</b>) PSNR, (<b>c</b>) SF, (<b>d</b>) SSIM, (<b>e</b>) <math display="inline"><semantics> <msup> <mi>Q</mi> <mrow> <mi>A</mi> <mi>B</mi> <mo>/</mo> <mi>F</mi> </mrow> </msup> </semantics></math>, (<b>f</b>) CE, and (<b>g</b>) RMSE.</p>
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<p>Panels (<b>a</b>–<b>h</b>) represent the CEST MRI images acquired at saturation durations of 17, 25, 33, 52, 60, 68, 76, and 84 min, respectively. Panel (<b>i</b>) shows the output result obtained by fusing this series of images.</p>
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20 pages, 1352 KiB  
Article
Microelement Integration Drives Smart Manufacturing: A Mixed Method Study
by Chenguang Li, Jingtong Gong, Tao Fu and Zhiguo Liang
Systems 2024, 12(12), 577; https://doi.org/10.3390/systems12120577 - 19 Dec 2024
Viewed by 458
Abstract
Smart manufacturing is an important initiative to promote the transformation and upgrading of industries and the high-quality development of the economy. However, the current situation of digitalized smart transformation in manufacturing enterprises is not optimistic, which is primarily attributed to the ambiguity surrounding [...] Read more.
Smart manufacturing is an important initiative to promote the transformation and upgrading of industries and the high-quality development of the economy. However, the current situation of digitalized smart transformation in manufacturing enterprises is not optimistic, which is primarily attributed to the ambiguity surrounding the pathways. This study is based on the technology-organization-environment-individual (TOE-I) analytical framework; it selects 20 case studies of advanced manufacturing enterprises; and employs case studies and necessary condition fuzzy set qualitative comparative research methods (NCA and fsQCA) to investigate the pathways through which technology, organization, the environment, and individual microelements synergistically drive smart manufacturing from a configurational perspective. The study reveals that digital technology breakthroughs, digital infrastructure, digital talent, digital sharing, organizational resilience, organizational culture, and the entrepreneurial spirit are the core influencing factors in advancing smart manufacturing for manufacturing enterprises, and four implementation paths driven by smart manufacturing are analyzed. Among them, digital technology breakthroughs and digital infrastructure have a potential substitutive relationship in the “technology + talent” empowerment organizational model. Organizational resilience, organizational culture, and the entrepreneurial spirit are important safeguards for successful advancements in smart manufacturing. In contrast, digital infrastructure plays a more indirect, supporting role. Accordingly, this paper provides theoretical reference and practical guidance. Full article
(This article belongs to the Special Issue Management and Simulation of Digitalized Smart Manufacturing Systems)
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<p>The analysis process underlying the research approach.</p>
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<p>Number of topics and coherence scores.</p>
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<p>Configuration model.</p>
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18 pages, 7502 KiB  
Article
The Influence of Stability in New Power Systems with the Addition of Phase Modulation Functions in Thermal Power Units
by Mingyang Liu, Chunsun Tian, Xiaoling Yuan, Chenghao Li, Ze Gao and Di Zhang
Processes 2024, 12(12), 2897; https://doi.org/10.3390/pr12122897 - 18 Dec 2024
Viewed by 297
Abstract
The addition of phase modulation function technology to thermal power units is one of the most effective measures to solve dynamic reactive power shortages in the construction process of new power systems. In this paper, the influence of the phase modulation function transformation [...] Read more.
The addition of phase modulation function technology to thermal power units is one of the most effective measures to solve dynamic reactive power shortages in the construction process of new power systems. In this paper, the influence of the phase modulation function transformation of thermal power units on the stability of a new power system is studied. Firstly, the new power system stability index is deeply analyzed, and an evaluation system for power system transient stability is constructed from five key dimensions: transient voltage, static voltage, power angle stability, power flow characteristics, and grid support. Secondly, a fuzzy comprehensive evaluation method considering the subjective and objective comprehensive weights is proposed, and the influence of the phase modulation transformation of the thermal power unit on the stability of the receiving-end power grid is quantitatively analyzed. Finally, a CEPRI36 node example model was built based on the PSASP v.7.91.04.9258 (China Electric Power Research Institute, Beijing, China) platform to verify the accuracy and effectiveness of the proposed method. The results show that the proposed method can quantitatively analyze the impact of adding a phase modulation function to thermal power units on the stability of the power system. At the point of renewable energy connection, the static voltage stability index improved by 42.9%, the transient power angle stability index improved by 32.1%, the multi-feed effective short-circuit ratio index improved by 33.9%, and the comprehensive evaluation score improved by 14.7%. These results further indicate that adding a phase modulation function to thermal power units can provide a large amount of dynamic reactive power support and improve the voltage stability and operational flexibility of the system. Full article
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<p>Weighted quantization analysis based on multi-binary tables.</p>
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<p>Weighted quantitative analysis based on multiple binary criteria.</p>
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<p>A typical PV curve of load bus.</p>
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<p>The flowchart of stability evaluation index system construction for receiving-end power grid.</p>
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<p>The flowchart of the evaluation methodology for the stability of the receiving-end power grid.</p>
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<p>Construction of membership function model.</p>
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<p>CEPRI36-node topology geographical wiring diagram including renewable energy AC/DC system. The red line represents the 500 kV bus voltage and the green line represents the 220 kV bus voltage in <a href="#processes-12-02897-f007" class="html-fig">Figure 7</a>.</p>
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<p>Comparison of stability evaluation indices and scores of the system before unit retrofitting.</p>
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<p>Comparison of stability evaluation indices and scores of the system after unit retrofitting.</p>
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<p>Comprehensive evaluation scores of system stability before and after unit retrofitting.</p>
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39 pages, 4291 KiB  
Review
Machine Learning and Deep Learning for Crop Disease Diagnosis: Performance Analysis and Review
by Habiba Njeri Ngugi, Andronicus A. Akinyelu and Absalom E. Ezugwu
Agronomy 2024, 14(12), 3001; https://doi.org/10.3390/agronomy14123001 - 17 Dec 2024
Viewed by 510
Abstract
Crop diseases pose a significant threat to global food security, with both economic and environmental consequences. Early and accurate detection is essential for timely intervention and sustainable farming. This paper presents a review of machine learning (ML) and deep learning (DL) techniques for [...] Read more.
Crop diseases pose a significant threat to global food security, with both economic and environmental consequences. Early and accurate detection is essential for timely intervention and sustainable farming. This paper presents a review of machine learning (ML) and deep learning (DL) techniques for crop disease diagnosis, focusing on Support Vector Machines (SVMs), Random Forest (RF), k-Nearest Neighbors (KNNs), and deep models like VGG16, ResNet50, and DenseNet121. The review method includes an in-depth analysis of algorithm performance using key metrics such as accuracy, precision, recall, and F1 score across various datasets. We also highlight the data imbalances in commonly used datasets, particularly PlantVillage, and discuss the challenges posed by these imbalances. The research highlights critical insights regarding ML and DL models in crop disease detection. A primary challenge identified is the imbalance in the PlantVillage dataset, with a high number of healthy images and a strong bias toward certain disease categories like fungi, leaving other categories like mites and molds underrepresented. This imbalance complicates model generalization, indicating a need for preprocessing steps to enhance performance. This study also shows that combining Vision Transformers (ViTs) with Green Chromatic Coordinates and hybridizing these with SVM achieves high classification accuracy, emphasizing the value of advanced feature extraction techniques in improving model efficacy. In terms of comparative performance, DL architectures like ResNet50, VGG16, and convolutional neural network demonstrated robust accuracy (95–99%) across diverse datasets, underscoring their effectiveness in managing complex image data. Additionally, traditional ML models exhibited varied strengths; for instance, SVM performed better on balanced datasets, while RF excelled with imbalanced data. Preprocessing methods like K-means clustering, Fuzzy C-Means, and PCA, along with ensemble approaches, further improved model accuracy. Lastly, the study underscores that high-quality, well-labeled datasets, stakeholder involvement, and comprehensive evaluation metrics such as F1 score and precision are crucial for optimizing ML and DL models, making them more effective for real-world applications in sustainable agriculture. Full article
(This article belongs to the Collection Machine Learning in Digital Agriculture)
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<p>Preferred reporting items for systematic reviews and meta-analysis (PRISMA) diagram for this study.</p>
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<p>General workflow of an ML-based crop detection technique.</p>
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<p>General workflow of a DL-based crop detection technique.</p>
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<p>Crop distribution in the PlantVillage dataset.</p>
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<p>Distribution of healthy and unhealthy samples in the PlantVillage dataset.</p>
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<p>Statistics of crop diseases in PlantVillage dataset.</p>
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<p>Classification accuracy of other ML algorithms from different authors.</p>
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<p>Classification accuracies of SVM-based crop detection techniques. Data sourced from [<a href="#B28-agronomy-14-03001" class="html-bibr">28</a>,<a href="#B29-agronomy-14-03001" class="html-bibr">29</a>,<a href="#B30-agronomy-14-03001" class="html-bibr">30</a>,<a href="#B31-agronomy-14-03001" class="html-bibr">31</a>,<a href="#B32-agronomy-14-03001" class="html-bibr">32</a>,<a href="#B33-agronomy-14-03001" class="html-bibr">33</a>].</p>
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<p>Classification accuracies of KNN-based crop detection techniques. Data sourced from [<a href="#B32-agronomy-14-03001" class="html-bibr">32</a>,<a href="#B34-agronomy-14-03001" class="html-bibr">34</a>,<a href="#B36-agronomy-14-03001" class="html-bibr">36</a>,<a href="#B37-agronomy-14-03001" class="html-bibr">37</a>].</p>
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<p>Classification accuracies of RF-based crop detection techniques. Data sourced from [<a href="#B32-agronomy-14-03001" class="html-bibr">32</a>,<a href="#B39-agronomy-14-03001" class="html-bibr">39</a>,<a href="#B40-agronomy-14-03001" class="html-bibr">40</a>,<a href="#B41-agronomy-14-03001" class="html-bibr">41</a>,<a href="#B42-agronomy-14-03001" class="html-bibr">42</a>].</p>
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<p>Classification accuracies of other ML-based crop detection techniques. Data sourced from [<a href="#B43-agronomy-14-03001" class="html-bibr">43</a>,<a href="#B44-agronomy-14-03001" class="html-bibr">44</a>,<a href="#B45-agronomy-14-03001" class="html-bibr">45</a>,<a href="#B46-agronomy-14-03001" class="html-bibr">46</a>].</p>
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<p>Performance of CNN-based crop detection techniques. Data sourced from [<a href="#B47-agronomy-14-03001" class="html-bibr">47</a>,<a href="#B48-agronomy-14-03001" class="html-bibr">48</a>,<a href="#B49-agronomy-14-03001" class="html-bibr">49</a>,<a href="#B50-agronomy-14-03001" class="html-bibr">50</a>,<a href="#B51-agronomy-14-03001" class="html-bibr">51</a>,<a href="#B52-agronomy-14-03001" class="html-bibr">52</a>,<a href="#B53-agronomy-14-03001" class="html-bibr">53</a>].</p>
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<p>Classification accuracies of other DL-based crop detection techniques. Data sourced from [<a href="#B46-agronomy-14-03001" class="html-bibr">46</a>,<a href="#B47-agronomy-14-03001" class="html-bibr">47</a>,<a href="#B49-agronomy-14-03001" class="html-bibr">49</a>,<a href="#B52-agronomy-14-03001" class="html-bibr">52</a>,<a href="#B53-agronomy-14-03001" class="html-bibr">53</a>,<a href="#B54-agronomy-14-03001" class="html-bibr">54</a>].</p>
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<p>Classification accuracies of VGG16-based crop detection techniques. Data sourced from [<a href="#B14-agronomy-14-03001" class="html-bibr">14</a>,<a href="#B56-agronomy-14-03001" class="html-bibr">56</a>,<a href="#B58-agronomy-14-03001" class="html-bibr">58</a>,<a href="#B60-agronomy-14-03001" class="html-bibr">60</a>,<a href="#B62-agronomy-14-03001" class="html-bibr">62</a>].</p>
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<p>Classification accuracies of ResNet-based crop detection techniques. Data sourced from [<a href="#B27-agronomy-14-03001" class="html-bibr">27</a>,<a href="#B53-agronomy-14-03001" class="html-bibr">53</a>,<a href="#B61-agronomy-14-03001" class="html-bibr">61</a>,<a href="#B63-agronomy-14-03001" class="html-bibr">63</a>,<a href="#B64-agronomy-14-03001" class="html-bibr">64</a>,<a href="#B65-agronomy-14-03001" class="html-bibr">65</a>].</p>
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<p>Classification accuracies of DenseNet121-based crop detection techniques. Data sourced from [<a href="#B10-agronomy-14-03001" class="html-bibr">10</a>,<a href="#B16-agronomy-14-03001" class="html-bibr">16</a>,<a href="#B18-agronomy-14-03001" class="html-bibr">18</a>,<a href="#B20-agronomy-14-03001" class="html-bibr">20</a>,<a href="#B46-agronomy-14-03001" class="html-bibr">46</a>,<a href="#B62-agronomy-14-03001" class="html-bibr">62</a>].</p>
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<p>Classification accuracies of the best-performing ML-based crop detection techniques [<a href="#B31-agronomy-14-03001" class="html-bibr">31</a>,<a href="#B35-agronomy-14-03001" class="html-bibr">35</a>,<a href="#B36-agronomy-14-03001" class="html-bibr">36</a>,<a href="#B43-agronomy-14-03001" class="html-bibr">43</a>].</p>
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<p>Comparison between the least-performing ML-based crop detection techniques.</p>
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<p>Classification accuracy of the best-performing DL-based techniques. Data sourced from [<a href="#B20-agronomy-14-03001" class="html-bibr">20</a>,<a href="#B49-agronomy-14-03001" class="html-bibr">49</a>,<a href="#B58-agronomy-14-03001" class="html-bibr">58</a>,<a href="#B62-agronomy-14-03001" class="html-bibr">62</a>].</p>
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28 pages, 4684 KiB  
Article
Exploring the Role of Artificial Intelligence in Wastewater Treatment: A Dynamic Analysis of Emerging Research Trends
by Javier De la Hoz-M, Edwan Anderson Ariza-Echeverri and Diego Vergara
Resources 2024, 13(12), 171; https://doi.org/10.3390/resources13120171 - 16 Dec 2024
Viewed by 584
Abstract
Wastewater treatment is a critical process for ensuring water quality and public health, particularly in the context of increasing environmental challenges such as pollution and water scarcity. Artificial intelligence (AI) has emerged as a transformative technology capable of optimizing various wastewater treatment processes, [...] Read more.
Wastewater treatment is a critical process for ensuring water quality and public health, particularly in the context of increasing environmental challenges such as pollution and water scarcity. Artificial intelligence (AI) has emerged as a transformative technology capable of optimizing various wastewater treatment processes, such as contaminant removal, energy consumption, and cost-efficiency. This study presents a comprehensive bibliometric analysis of AI applications in wastewater treatment, utilizing data from Scopus and Web of Science covering 4335 publications from 1985 to 2024. Utilizing machine learning techniques such as neural networks, fuzzy logic, and genetic algorithms, the analysis reveals key trends in the role of the AI in optimizing wastewater treatment processes. The results show that AI has increasingly been applied to solve complex problems like membrane fouling, nutrient removal, and biofouling control. Regional contributions highlight a strong focus on advanced oxidation processes, microbial sludge treatment, and energy optimization. The Latent Dirichlet Allocation (LDA) model further identifies emerging topics such as real-time process monitoring and AI-driven effluent prediction as pivotal areas for future research. The findings provide valuable insights into the current state and future potential of AI technologies in wastewater management, offering a roadmap for researchers exploring the integration of AI to address sustainability challenges in the field. Full article
(This article belongs to the Special Issue Advances in Wastewater Reuse)
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<p>PRISMA diagram illustrating the identification, screening, and selection of studies.</p>
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<p>Annual scientific publications and mean citations per article (1985–2024) related to AI in wastewater treatment.</p>
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<p>Geographical distribution of publications in AI-driven wastewater research (1985–2024).</p>
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<p>Top institutions contributing to AI-driven wastewater research (1985–2024).</p>
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<p>Collaboration network of countries in AI-driven wastewater research. This figure illustrates the global collaboration network, with node size representing the centrality and influence of each country. The connections depict collaborative ties between nations, with China serving as the dominant hub connecting various countries. This image can be best visualized in its HTML format, in <a href="#app1-resources-13-00171" class="html-app">Supplementary Material S1</a>.</p>
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<p>Collaboration network of institutions in AI-driven wastewater research. The figure illustrates the institutional collaboration network, with node size representing the influence and centrality of each institution. Colors correspond to different clusters, reflecting distinct communities within the global network. This image can be best visualized in its HTML format, in <a href="#app1-resources-13-00171" class="html-app">Supplementary Material S2</a>.</p>
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<p>Collaboration network of authors in AI-driven wastewater research. The figure illustrates the author collaboration network, with node size representing centrality and influence. Connections indicate collaborative ties, with prominent authors like Qiao J. and Wang Z. serving as major hubs in the global network. This image can be best visualized in its HTML format, in <a href="#app1-resources-13-00171" class="html-app">Supplementary Material S3</a>.</p>
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<p>Intertopic distance map of AI applications in wastewater management: LDA visualization using multidimensional scaling.</p>
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<p>Temporal evolution of research topics in AI-driven wastewater research (1985–2024).</p>
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<p>Heatmap of research topic distribution by country in AI-driven wastewater research.</p>
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<p>Heatmap of research topic distribution by journal in AI-driven wastewater research.</p>
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24 pages, 4801 KiB  
Article
Unraveling the Complex Barriers to and Policies for Shared Autonomous Vehicles: A Strategic Analysis for Sustainable Urban Mobility
by Irfan Ullah, Jianfeng Zheng, Salamat Ullah, Krishna Bhattarai, Hamad Almujibah and Hamad Alawad
Systems 2024, 12(12), 558; https://doi.org/10.3390/systems12120558 - 13 Dec 2024
Viewed by 627
Abstract
Integrating shared autonomous vehicles (SAVs) in urban transportation systems holds transformative potential but is accompanied by notable challenges. This study, conducted in Saudi Arabia (KSA), aims to address these challenges by identifying and prioritizing the key barriers and policies that are necessary if [...] Read more.
Integrating shared autonomous vehicles (SAVs) in urban transportation systems holds transformative potential but is accompanied by notable challenges. This study, conducted in Saudi Arabia (KSA), aims to address these challenges by identifying and prioritizing the key barriers and policies that are necessary if we are to successfully adopt SAVs. A comprehensive analysis was performed through a literature review and expert consultations, revealing 24 critical barriers and 10 policies for solving them. The research employed a three-phase methodology to evaluate and rank the policies proposed to overcome these barriers. Initially, the study assessed the specific barriers and policies related to SAVs. Subsequently, the Fuzzy Analytic Hierarchy Process (FAHP) was employed to evaluate the relative importance of these barriers. Finally, the Fuzzy Technique for Order of Preference by Similarity to Ideal Solution (F-TOPSIS) was applied to rank the policies; the process identified government-backed investment, urban planning integration, and funding for research and development in sensor and hardware technologies as the most effective policies. The study underscores the importance of targeted policies in addressing technical and infrastructural challenges. Emphasizing system reliability, cybersecurity, and effective integration of SAVs into urban planning, the findings advocate for robust government support and continued technological innovation. These insights offer a roadmap for policymakers and industry leaders in the KSA to foster a more sustainable and resilient urban transportation future. Full article
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<p>The research framework of three-stage approach.</p>
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<p>Hierarchical decision structure of this study.</p>
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<p>Ranking of SAV barriers.</p>
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<p>RPB sub-barriers ranking.</p>
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<p>PPT sub-barriers ranking.</p>
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<p>IL sub-barriers ranking.</p>
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<p>EFC sub-barriers ranking.</p>
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<p>TB sub-barriers ranking.</p>
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<p>MCD sub-barriers ranking.</p>
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41 pages, 2520 KiB  
Article
How Digitalization and Its Context Affect the Urban–Rural Income Gap: A Configurational Analysis Based on 274 Prefecture-Level Administrative Regions in China
by Yulong Jie, Shuigen Hu, Siling Zhu and Lieen Weng
Land 2024, 13(12), 2118; https://doi.org/10.3390/land13122118 - 6 Dec 2024
Viewed by 685
Abstract
Digitalization offers an opportunity to narrow the economic gap between urban and rural areas; however, there are fragmented and competing explanations regarding its impact mechanisms. Responding to calls for research on the complex effects of digitalization, this paper, based on a contextual perspective [...] Read more.
Digitalization offers an opportunity to narrow the economic gap between urban and rural areas; however, there are fragmented and competing explanations regarding its impact mechanisms. Responding to calls for research on the complex effects of digitalization, this paper, based on a contextual perspective and configurational theory, analyzes the impact of digitalization conditions embedded in contexts on the urban–rural income gap. The study, based on a sample of 274 prefecture-level administrative regions in China from 2014 to 2021, employs a Panel Fuzzy-Set Qualitative Comparative Analysis (Panel fsQCA) and Necessary Condition Analysis (NCA). The combined application of necessity analysis and sufficiency analysis reveals that certain digitalization conditions—such as digital infrastructure, digital industry, and digital finance—have a universal influence on the urban–rural income gap. Importantly, the sufficiency analysis demonstrates that the impact mechanisms of digitalization conditions exhibit configurational effects, varying with changes in contextual and conditional combinations. The models that significantly narrow the urban–rural income gap include (1) the “infrastructure–finance–governance” model, (2) the comprehensive digital transformation model, (3) the “technology–infrastructure–industry” model, and (4) the digital infrastructure transformation model. Among these, the comprehensive digital transformation model is the most universally effective. These configurations reflect the logic of completeness and substitutability and exhibit specific dynamic evolutionary trends and spatial distribution characteristics. These findings provide contextual and adaptable empirical insights for economies, including China, to implement targeted digital transformation strategies that effectively narrow the urban–rural income gap. For instance, economies can focus on developing comprehensive digital transformation in prosperous and open regions to reduce income gap. Full article
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<p>Analytical framework of digitalization affecting the urban–rural income gap.</p>
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<p>Logic of completeness and substitutability in configurations.</p>
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<p>Between consistency analysis.</p>
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<p>Within consistency analysis<a href="#fn003-land-13-02118" class="html-fn">3</a>. Note: The vertical axis represents within consistency, and the horizontal axis represents the samples.</p>
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<p>Necessary Condition Analysis results for narrowing the urban–rural income gap.</p>
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<p>Necessary Condition Analysis results for widening the urban–rural income gap.</p>
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18 pages, 2246 KiB  
Article
Improving Multiscale Fuzzy Entropy Robustness in EEG-Based Alzheimer’s Disease Detection via Amplitude Transformation
by Pasquale Arpaia, Maria Cacciapuoti, Andrea Cataldo, Sabatina Criscuolo, Egidio De Benedetto, Antonio Masciullo, Marisa Pesola and Raissa Schiavoni
Sensors 2024, 24(23), 7794; https://doi.org/10.3390/s24237794 - 5 Dec 2024
Viewed by 598
Abstract
This study investigates the effectiveness of amplitude transformation in enhancing the performance and robustness of Multiscale Fuzzy Entropy for Alzheimer’s disease detection using electroencephalography signals. Multiscale Fuzzy Entropy is a complexity measure particularly sensitive to intra- and inter-subject variations in signal amplitude, as [...] Read more.
This study investigates the effectiveness of amplitude transformation in enhancing the performance and robustness of Multiscale Fuzzy Entropy for Alzheimer’s disease detection using electroencephalography signals. Multiscale Fuzzy Entropy is a complexity measure particularly sensitive to intra- and inter-subject variations in signal amplitude, as well as the selection of key parameters such as embedding dimension (m) and similarity criterion (r), which often result in inconsistent outcomes when applied to multivariate data, such as electroencephalography signals. To address these challenges and to generalize the possibility of adopting Multiscale Fuzzy Entropy as a diagnostic tool for Alzheimer’s disease, this research explores amplitude transformation preprocessing on electroencephalography signals in Multiscale Fuzzy Entropy calculation across varying parameters. The statistical analysis of the obtained results demonstrates that amplitude transformation preprocessing significantly enhances Multiscale Fuzzy Entropy’s ability to detect Alzheimer’s disease, achieving higher and more consistent significant comparison percentages, with an average of 73.2% across all parameter combinations, compared with only one raw data combination exceeding 65%. Clustering analysis corroborates these findings, showing that amplitude transformation improves the differentiation between Alzheimer’s disease patients and healthy subjects. These results highlight the potential of amplitude transformation to stabilize Multiscale Fuzzy Entropy performance, making it a more reliable tool for early Alzheimer’s disease detection. Full article
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<p>Workflow: (<b>A</b>) the process begins with data acquisition. The same EEG data are subjected to two parallel processes: the raw EEG data are analyzed to establish a baseline for comparison; (<b>B</b>) the amplitude transformation (AT) preprocessing is applied. (<b>C</b>) For each scenario (raw and AT data), Multiscale Fuzzy Entropy (MFE) is then calculated for various parameter combinations. (<b>D</b>) The data are analyzed via statistical evaluation and clustering for both amplitude-transformed and raw data. Finally, the results from these evaluations are compared to assess the robustness of the MFE calculations at parameters <span class="html-italic">m</span> and <span class="html-italic">r</span> in each scenario (raw and AT).</p>
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<p>Comparison of MFE on 20 scale factors for raw (<b>a</b>) and processed data with AT procedure (<b>b</b>) by using CZ electrode.</p>
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<p>Cohen’s D values for raw and AT data across the 12 parameter combinations.</p>
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<p>Comparison of clustering performance metrics (V-measure, ARI, AMI) for raw and transformed EEG data across 12 parameter combinations. The graph highlights the peak in performance for the fourth parameter combination in raw data and shows the consistently higher and stable performance metrics for processed data, indicating the robustness of the AT procedure.</p>
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<p>Three-dimensional t-SNE plots for clustering visualization in the case of transformed data on the left and raw data on the right. Blue circles represent HSs, while red squares indicate AD subjects.</p>
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34 pages, 6512 KiB  
Article
Rehabilitation Technologies by Integrating Exoskeletons, Aquatic Therapy, and Quantum Computing for Enhanced Patient Outcomes
by Fabio Salgado-Gomes-Sagaz, Vanessa Zorrilla-Muñoz and Nicolas Garcia-Aracil
Sensors 2024, 24(23), 7765; https://doi.org/10.3390/s24237765 - 4 Dec 2024
Viewed by 814
Abstract
Recent advancements in patient rehabilitation integrate both traditional and modern techniques to enhance treatment efficacy and accessibility. Hydrotherapy, leveraging water’s physical properties, is crucial for reducing joint stress, alleviating pain, and improving circulation. The rehabilitation of upper limbs benefits from technologies like virtual [...] Read more.
Recent advancements in patient rehabilitation integrate both traditional and modern techniques to enhance treatment efficacy and accessibility. Hydrotherapy, leveraging water’s physical properties, is crucial for reducing joint stress, alleviating pain, and improving circulation. The rehabilitation of upper limbs benefits from technologies like virtual reality and robotics which, when combined with hydrotherapy, can accelerate recovery. Exoskeletons, which support and enhance movement, have shown promise for patients with neurological conditions or injuries. This study focused on implementing and comparing proportional–integral–derivative (PID) and fuzzy logic controllers (FLCs) in a lower limb exoskeleton. Initial PID control tests revealed instability, leading to a switch to a PI controller for better stability and the development of a fuzzy control system. A hybrid strategy was then applied, using FLC for smooth initial movements and PID for precise tracking, with optimized weighting to improve performance. The combination of PID and fuzzy controllers, with tailored weighting (70% for moderate angles and 100% for extensive movements), enhanced the exoskeleton’s stability and precision. This study also explored quantum computing techniques, such as the quantum approximate optimization algorithm (QAOA) and the quantum Fourier transform (QFT), to optimize controller tuning and improve real-time control, highlighting the potential of these advanced tools in refining rehabilitation devices. Full article
(This article belongs to the Topic Communications Challenges in Health and Well-Being)
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<p>Schematic phases of proposed implementation of aquatic rehabilitation system.</p>
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<p>Schematic of the proposed design in the main project NOHA.</p>
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<p>Progression from using the PID method to implementing a hybrid approach that combines PID and fuzzy controllers.</p>
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<p>(<b>Left</b>) Figure: Lower limb exoskeleton showing the selected part for control. (<b>Center</b>) Figure: model created from the selected part of the exoskeleton. (<b>Right</b>) Figure: hydrotherapy tank with the prototype created.</p>
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<p>PID block.</p>
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<p>(<b>Left</b>): PID graph 1: Degrees x Time (s); yellow is the setpoint and blue is the position. (<b>Right</b>): PID graph 2: Degrees x Time (s); orange is the setpoint and blue is the position.</p>
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<p>(<b>Left</b>): fuzzyfication block. (<b>Middle</b>): membership functions. (<b>Right</b>): defuzzyfication block.</p>
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<p>HMI screen created.</p>
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<p>Control loop with the HMI, PLC, EPOS, motor, and prototype.</p>
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<p>First (<b>left</b>) and second (<b>right</b>) ponderation graphic.</p>
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<p>Function block for the ponderation calculations.</p>
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<p>Function block for the ramp block.</p>
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<p>Weighted controller: (<b>a</b>). Controller for 70% for 30°. (<b>b</b>). Controller for 70% for 25°. (<b>c</b>). Controller for 70% for 35°. (<b>d</b>). Controller for 50% for 20°. (<b>e</b>). Controller for 50% for 17°. (<b>f</b>). Controller for 50% for 24°. (<b>g</b>). Controller for 30% for 40°. (<b>h</b>). Controller for 30% for 35°. (<b>i</b>). Controller for 30% for 44°. (<b>j</b>). Controller for 100% for 45°. (<b>k</b>). Controller for 100% for 50°.</p>
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