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Search Results (88,672)

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16 pages, 308 KB  
Article
Energy Literacy of Prospective Primary School Teachers: A Comparative Study in a Portuguese University
by Laurinda Leite, Luís Dourado, Sofia Morgado, Ana Sofia Afonso, Francisco Macedo and Mário R. Pereira
Educ. Sci. 2026, 16(4), 535; https://doi.org/10.3390/educsci16040535 (registering DOI) - 27 Mar 2026
Abstract
The word “energy” is one of the most used in our daily language. People are constantly reminded to save energy, use it efficiently, and increase the use of renewable energy, which is much more environmentally friendly than non-renewable energy. Citizens need to develop [...] Read more.
The word “energy” is one of the most used in our daily language. People are constantly reminded to save energy, use it efficiently, and increase the use of renewable energy, which is much more environmentally friendly than non-renewable energy. Citizens need to develop a good level of energy literacy, that is, a general predisposition, and, at the same time, a competence for engaging in desirable behaviours in the area of energy consumption. Teachers are a key element in promoting energy literacy. This article aims to compare the energy literacy of first- and third-year students enrolled in the 3 year long Basic Education undergraduate programme of a Portuguese university, who will become primary school teachers. To attain the research objective, 203 prospective teachers (first year: 98; third year: 105) were invited to answer a questionnaire on knowledge about energy (cognitive dimension), behaviour (behavioural dimension) concerning energy, and attitudes (affective dimension) toward energy. Concerning the cognitive dimension, statistically significant differences were obtained between first and third year groups and between third year rural and urban participants; differences between participants with parents with diverse levels of education are not statistically significant. The same applies to comparisons within the affective and the behavioural dimensions. Even though participants seem to believe that they know more than they do, the undergraduate programme in Basic Education seems to cause a small improvement, which is not enough for prospective teachers to reach a good level of energy literacy. Therefore, more attention should be paid to the development, in the Basic Education programme, of energy literacy, considering its diverse dimensions. Full article
(This article belongs to the Section STEM Education)
14 pages, 2326 KB  
Article
Steel Surface Defect Detection Based on Improved YOLOv8 with Multi-Scale Feature Fusion and Attention Mechanism
by Yalei Jia, Xian Zhang, Jianhui Meng and Jisong Zang
Electronics 2026, 15(7), 1408; https://doi.org/10.3390/electronics15071408 - 27 Mar 2026
Abstract
Identifying microscopic textural anomalies and filtering out complicated industrial background noise remain significant hurdles in inspecting metallic surfaces. To tackle these operational bottlenecks, our research introduces a refined multi-scale detection framework built upon the YOLOv8l architecture. Specifically, we engineer a fine-grained detection pathway [...] Read more.
Identifying microscopic textural anomalies and filtering out complicated industrial background noise remain significant hurdles in inspecting metallic surfaces. To tackle these operational bottlenecks, our research introduces a refined multi-scale detection framework built upon the YOLOv8l architecture. Specifically, we engineer a fine-grained detection pathway utilizing the P2 layer, which aims to preserve critical details of miniature flaws that are otherwise discarded during feature extraction. Furthermore, a Bi-directional Feature Pyramid Network model is embedded to reconstruct the feature fusion path, balancing the preservation of shallow geometric textures with enhanced multi-scale representation capabilities. To bolster anti-interference performance, a Convolutional Block Attention Module (CBAM) is integrated prior to the detection head, employing adaptive channel and spatial weighting to suppress unstructured background noise. Experimental results utilizing TTA demonstrate that the mAP@0.5 reached 76.3%. Detection accuracies for patches and inclusions reached 93.1% and 85.3%. Full article
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15 pages, 567 KB  
Review
The Broad Effect of Iodine in Graves’ Hyperthyroidism and Its Relationship with the Gut Microbiota
by Elsbeth R. P. C. van Wees-Jansen, Barbara A. Hutten and Max Nieuwdorp
Nutrients 2026, 18(7), 1082; https://doi.org/10.3390/nu18071082 (registering DOI) - 27 Mar 2026
Abstract
Thyroid disorders are among the most common endocrine disorders worldwide and are classified as noncommunicable diseases. These disorders are associated with significant morbidity, impaired quality of life, and considerable socioeconomic burden. Like other noncommunicable diseases, thyroid disorders arise from complex interactions between genetic [...] Read more.
Thyroid disorders are among the most common endocrine disorders worldwide and are classified as noncommunicable diseases. These disorders are associated with significant morbidity, impaired quality of life, and considerable socioeconomic burden. Like other noncommunicable diseases, thyroid disorders arise from complex interactions between genetic susceptibility and environmental factors, including diet and lifestyle. Despite growing interest in lifestyle-based approaches to noncommunicable disease prevention and management, thyroid disorders have received comparatively limited attention in this context. Graves’ disease, the most common cause of hyperthyroidism, is a relevant condition for exploring dietary interventions. Current treatment strategies—anti-thyroid drugs, radioactive iodine and thyroidectomy—have remained largely unchanged for decades. Long-term remission following drug therapy is achieved in no more than approximately 50% of patients, while all treatment modalities carry potential adverse effects. These limitations underscore the need for alternative or adjunctive therapeutic strategies. Iodine intake plays a central role in thyroid hormone synthesis. Indeed, observational studies have shown inverse associations between iodine intake and remission rates, as well as achievement of euthyroidism, medication requirements and thyroid autoantibody titers. These findings suggest that dietary iodine restriction may enhance treatment efficacy and reduce medication-related risks. Beyond its direct effects on thyroid hormone synthesis, iodine may influence Graves’ disease through indirect mechanisms involving the lipid profile and the gut–thyroid axis. Autoimmune thyroid diseases are associated with a dyslipidemic profile and with gut microbiota dysbiosis; the latter characterized by increased potentially pathogenic bacteria and reduced beneficial bacteria such as Lactobacillus and Bifidobacterium. Full article
18 pages, 1802 KB  
Article
A Multi-Attention Gated Fusion and Physics-Informed Model for Steam Turbine Regulating-Stage Fault Detection
by Yuanli Ma, Gang Ding, Qiang Zhang, Jiangming Zhou and Yue Cao
Energies 2026, 19(7), 1665; https://doi.org/10.3390/en19071665 - 27 Mar 2026
Abstract
The increasing proportion of renewable energy leads to frequent changes in turbine load, making the regulating stage more prone to degradation. Traditional anomaly detection methods lack sufficient sensitivity and generalization. To address this issue, this study proposes a method combining multi-attention gated fusion [...] Read more.
The increasing proportion of renewable energy leads to frequent changes in turbine load, making the regulating stage more prone to degradation. Traditional anomaly detection methods lack sufficient sensitivity and generalization. To address this issue, this study proposes a method combining multi-attention gated fusion and physical information learning. A gated fusion mechanism is proposed to adaptively extract and fuse key temporal and feature information. Furthermore, the generalization ability of the model is improved by introducing physical constraints derived from the relationship between pressure, temperature, and valve position. Finally, a dynamic temperature prediction model is established using the multi-output long short-term memory neural network. Experiments using actual power plant data demonstrate that the proposed method effectively improves the accuracy of post-regulating-stage temperature prediction and the sensitivity of anomaly detection. The proposed gating fusion method improves prediction accuracy by 4.6% compared to direct addition, while the fusion of physical information reduces the generalization error by more than 6%. In addition, compared to traditional deep learning and machine learning models, the proposed method improves anomaly detection accuracy by at least 3.9%. This research is of great significance for the safe operation of thermal power units and the power grid. Full article
28 pages, 2379 KB  
Article
Decision-Aware Vision Mamba with Context-Guided Slot Mixing for Chest X-Ray Screening and Culture-Based Hierarchical Tuberculosis Classification
by Wangsu Jeon, Hyeonung Jang, Hongchang Lee, Chanho Park, Jiwon Lyu and Seongjun Choi
Sensors 2026, 26(7), 2100; https://doi.org/10.3390/s26072100 - 27 Mar 2026
Abstract
Distinguishing Active from Inactive Tuberculosis (TB) on Chest X-rays presents a clinical challenge due to overlapping radiological signs. This study introduces Vision Mamba CGSM, a deep learning framework integrating a State Space Model (SSM) backbone with a Context-Guided Slot Mixing (CGSM) module. The [...] Read more.
Distinguishing Active from Inactive Tuberculosis (TB) on Chest X-rays presents a clinical challenge due to overlapping radiological signs. This study introduces Vision Mamba CGSM, a deep learning framework integrating a State Space Model (SSM) backbone with a Context-Guided Slot Mixing (CGSM) module. The SSM captures global anatomical context, while the CGSM module isolates subtle pathological features by applying localized spatial attention. We validated the model using a hierarchical diagnostic scheme covering Normal, Pneumonia, Active TB, and Inactive TB. Experimental evaluations demonstrate an accuracy of 92.96% and a Youden Index of 79.55% on the independent test set. In the specific binary classification of Active vs. Inactive TB, the model recorded a specificity of 97.04%, outperforming standard baseline architectures including ResNet152 and ViT-B. Additional validations on external datasets confirm the consistent generalization of the proposed feature extraction mechanism. Full article
(This article belongs to the Section Sensing and Imaging)
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24 pages, 1020 KB  
Article
Research on the Diagnosis of Abnormal Sound Defects in Automobile Engines Based on Fusion of Multi-Modal Images and Audio
by Yi Xu, Wenbo Chen and Xuedong Jing
Electronics 2026, 15(7), 1406; https://doi.org/10.3390/electronics15071406 - 27 Mar 2026
Abstract
Against the global carbon neutrality target, predictive maintenance (PdM) of automotive engines represents a core technical strategy to advance the sustainable development of the automotive industry. Conventional single-modal diagnostic approaches for engine abnormal sound defects suffer from low accuracy and weak anti-interference capability. [...] Read more.
Against the global carbon neutrality target, predictive maintenance (PdM) of automotive engines represents a core technical strategy to advance the sustainable development of the automotive industry. Conventional single-modal diagnostic approaches for engine abnormal sound defects suffer from low accuracy and weak anti-interference capability. Existing multi-modal fusion methods fail to deeply mine the physical coupling between cross-modal features and often entail excessive model complexity, hindering deployment on resource-constrained on-board edge devices. To resolve these limitations, this study proposes a Physical Prior-Embedded Cross-Modal Attention (PPE-CMA) mechanism for lightweight multi-modal fusion diagnosis of engine abnormal sound defects. First, wavelet packet decomposition (WPD) and mel-frequency cepstral coefficients (MFCC) are integrated to extract time-frequency features from engine audio signals, while a channel-pruned ResNet18 is employed to extract spatial features from engine thermal imaging and vibration visualization images. Second, the PPE-CMA module is designed to adaptively assign attention weights to audio and image features by exploiting the physical coupling between engine fault acoustic and visual characteristics, enabling efficient cross-modal feature fusion with redundant information suppression. A rigorous theoretical derivation is provided to link cosine similarity with the physical correlation of engine fault acoustic-visual features, justifying the attention weight constraint (β = 1 − α) from the perspective of fault feature physical coupling. Third, an improved lightweight XGBoost classifier is constructed for fault classification, and a hybrid data augmentation strategy customized for engine multi-modal data is proposed to address the small-sample challenge in industrial applications. Ablation experiments on ResNet18 pruning ratios verify the optimal trade-off between diagnostic performance and computational efficiency, while feature distribution analysis validates the authenticity and effectiveness of the hybrid augmentation strategy. Experimental results on a self-constructed multi-modal dataset show that the proposed method achieves 98.7% diagnostic accuracy and a 98.2% F1-score, retaining 96.5% accuracy under 90 dB high-level environmental noise, with an end-to-end inference speed of 0.8 ms per sample (including preprocessing, feature extraction, and classification). Cross-engine and cross-domain validation on a 2.0T diesel engine small-sample dataset and the open-source SEMFault-2024 dataset yield average accuracies of 94.8% and 95.2%, respectively, demonstrating strong generalization. This method effectively enhances the accuracy and robustness of engine abnormal sound defect diagnosis, offering a lightweight technical solution for on-board real-time fault diagnosis and in-plant online quality inspection. By reducing engine fault-induced energy loss and spare parts waste, it further promotes energy conservation and emission reduction in the automotive industry. Quantified experimental data on fuel efficiency improvement and carbon emission reduction are provided to substantiate the ecological benefits of the proposed framework. Full article
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22 pages, 5443 KB  
Article
Research on Improving the Operational Efficiency of Battery–CAES Systems Using a Dual-Layer Optimization Model Based on CNN-LSTM-AM Forecasting
by Qing Zhi, Jin Guan, Ruopeng Zhang, Lixia Wu, Shuhui Zhang, Feifei Xue and Caifeng Wen
Energies 2026, 19(7), 1664; https://doi.org/10.3390/en19071664 - 27 Mar 2026
Abstract
This study addresses the low operational efficiency and high energy storage cost of wind–solar hybrid energy storage systems due to the strong volatility and intermittency of wind and photovoltaic power. Instead, the authors propose a dual-layer optimization model based on convolutional neural network–long [...] Read more.
This study addresses the low operational efficiency and high energy storage cost of wind–solar hybrid energy storage systems due to the strong volatility and intermittency of wind and photovoltaic power. Instead, the authors propose a dual-layer optimization model based on convolutional neural network–long short-term memory–attention mechanism (CNN-LSTM-AM) forecasting. First, a CNN-LSTM-AM forecasting model is constructed based on convolutional neural networks and long short-term memory networks. Then, the model is applied to wind and solar power forecasting to dynamically optimize the output power ratio of renewable sources and batteries based on predicted power, thereby reducing the start–stop frequency of compressed air energy storage (CAES) and improving operational efficiency. For lower-layer optimization, a weight evaluation model based on AHP is constructed and subsequently used to optimize the capacity configuration of the hybrid energy storage system to achieve overall system optimality. Case studies indicate that after upper-layer optimization, the number of CAES start–stop cycles decreases from 25 to 17, and further declines to 14 after optimization of the lower-layer capacity configuration, while the energy storage cost is reduced by 5.43% and the curtailment rate decreases by 0.15%. This validates the effectiveness of the proposed model in improving the economic performance and stability of renewable hybrid energy storage systems. Full article
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37 pages, 3540 KB  
Article
A Multimodal Time-Frequency Fusion Architecture for FaultDiagnosis in Rotating Machinery
by Hui Wang, Congming Wu, Yong Jiang, Yanqing Ouyang, Chongguang Ren, Xianqiong Tang and Wei Zhou
Appl. Sci. 2026, 16(7), 3269; https://doi.org/10.3390/app16073269 - 27 Mar 2026
Abstract
Accurate fault diagnosis of rotating machinery in complex industrial environments demands an optimal trade-off between feature representation capability and computational efficiency. Existing single-modality models relying solely on 1D time-series signals or heavy 2D time-frequency images often fail to simultaneously capture high-frequency transient impacts [...] Read more.
Accurate fault diagnosis of rotating machinery in complex industrial environments demands an optimal trade-off between feature representation capability and computational efficiency. Existing single-modality models relying solely on 1D time-series signals or heavy 2D time-frequency images often fail to simultaneously capture high-frequency transient impacts and long-range degradation trends. CLiST (Complementary Lightweight Spatiotemporal Network), a novel lightweight multimodal framework driven by time-frequency fusion, was proposed to overcome this limitation. The architecture of CLiST employs a synergistic dual-stream design: a LightTS module efficiently extracts global operational trends from 1D vibration signals with linear complexity, while a structurally pruned LiteSwin integrated with Triplet Attention captures local high-frequency textures from 2D continuous wavelet transform (CWT) images. This mechanism establishes explicit cross-dimensional dependencies, effectively eliminating feature blind spots without excessive computational overhead. The experimental results show that CLiST not only achieves perfect accuracy on the fundamental CWRU benchmark but also exhibits exceptional spatial generalization when independently evaluated on non-dominant sensor axes of the XJTUGearbox dataset. Furthermore, validation on the real-world dataset (Guangzhou port) proves that the framework has excellent robustness to the attenuation of the signal transmission path and reduces the performance fluctuation between remote measurement points. Ultimately, CLiST delivers highly reliable AI-driven image and signal-processing solutions for vibration monitoring in industrial equipment. Full article
33 pages, 3562 KB  
Review
Ethics in Artificial Intelligence: A Cross-Sectoral Review of 2019–2025
by Charalampos M. Liapis, Nikos Fazakis, Sotiris Kotsiantis and Yannis Dimakopoulos
Informatics 2026, 13(4), 51; https://doi.org/10.3390/informatics13040051 - 27 Mar 2026
Abstract
Artificial Intelligence (AI) has transitioned from a specialized research area to a ubiquitous socio-technical infrastructure influencing sectors from healthcare and law to manufacturing and defense. In tandem with its transformative promise, AI has created an exponentially expanding ethics literature questioning, fairness, transparency, accountability, [...] Read more.
Artificial Intelligence (AI) has transitioned from a specialized research area to a ubiquitous socio-technical infrastructure influencing sectors from healthcare and law to manufacturing and defense. In tandem with its transformative promise, AI has created an exponentially expanding ethics literature questioning, fairness, transparency, accountability, and justice. This review synthesizes publications and key policy developments between 2019 and 2025, bringing sectoral discourses together with cross-cutting frameworks. Grounded in a systematic scoping review methodology, we frame the field along four meta-dimensions: trust and transparency, bias and fairness, governance & regulation, and justice, while we investigate their expression across diverse sectors. Special attention is dedicated to healthcare (patient trust and algorithmic bias), education (integrity and authorship), media (misinformation), law (accountability), and the industrial sector (data integrity, intellectual property protection, and environmental safety). We ground abstract principles in concrete case studies to illustrate real-world harms and mitigation strategies. Furthermore, we incorporate pluralistic ethics (e.g., Ubuntu, Islamic perspectives), environmental ethics, and emerging challenges posed by Generative AI and neuro-AI interfaces. To bridge theory and practice, we propose an operational governance framework for organizations. We contend that success involves transitioning from principles toward ethics-by-design, pluralistic governance, sustainability, and adaptive oversight. This review is intended for scholars, practitioners, and policymakers who need a comprehensive and actionable framework for navigating the complex landscape of AI ethics. Full article
46 pages, 2125 KB  
Review
Big Data and Graph Deep Learning for Financial Decision Support from Social Networks: A Critical Review
by Leonidas Theodorakopoulos and Alexandra Theodoropoulou
Electronics 2026, 15(7), 1405; https://doi.org/10.3390/electronics15071405 - 27 Mar 2026
Abstract
Social network content is increasingly used as an auxiliary evidence stream for financial monitoring, risk assessment, and short-horizon decision support, yet many reported gains are hard to interpret because observability, timing, and attribution are handled inconsistently across studies. This review critically synthesizes the [...] Read more.
Social network content is increasingly used as an auxiliary evidence stream for financial monitoring, risk assessment, and short-horizon decision support, yet many reported gains are hard to interpret because observability, timing, and attribution are handled inconsistently across studies. This review critically synthesizes the end-to-end pipeline that transforms social posts, interaction traces, linked artifacts, and related signals into decision-facing indicators, emphasizing evidence provenance, sampling bias, conditioning (bot/spam filtering, entity linking, timestamp alignment), and the modeling blocks typically used (text, temporal, relational, and fusion components) under deployment constraints. Across sentiment, relational, and multimodal or cross-platform signals, the analysis finds that apparent improvements often depend more on alignment discipline and conservative attribution than on architectural novelty, and that performance can be inflated by attention confounds, temporal leakage, and visibility effects. Relational indicators are most defensible for monitoring coordination and propagation patterns, while multimodal gains require clear ablations and realistic missing-modality tests. To support decision readiness, the paper consolidates assurance requirements covering manipulation, degraded observability, calibration and traceability, and provides compact reporting checklists and failure-mode mitigations. Overall, the review supports bounded claims and argues for time-aware evaluation and auditable pipelines as prerequisites for operational use. Full article
(This article belongs to the Special Issue Deep Learning and Data Analytics Applications in Social Networks)
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18 pages, 4127 KB  
Article
A Prediction Framework for Autonomous Driving Stress to Support Sustainable Shared Autonomous Vehicle Operations
by Jeonghoon Jee, Hoyoon Lee, Cheol Oh and Kyeongpyo Kang
Sustainability 2026, 18(7), 3292; https://doi.org/10.3390/su18073292 - 27 Mar 2026
Abstract
Shared autonomous vehicle (SAV) services are gaining attention as an innovative urban transportation paradigm due to their potential to lower travel costs and improve operational efficiency. Unlike manually operated vehicles, SAVs exhibit unique behavioral dynamics, including safe passenger pick-up and drop-off processes, as [...] Read more.
Shared autonomous vehicle (SAV) services are gaining attention as an innovative urban transportation paradigm due to their potential to lower travel costs and improve operational efficiency. Unlike manually operated vehicles, SAVs exhibit unique behavioral dynamics, including safe passenger pick-up and drop-off processes, as well as strategic repositioning and autonomous parking to anticipate future travel demands. Consequently, effective and dynamic route planning is paramount to optimizing SAV safety and operational efficiency. This study proposes a novel traffic information, termed Autonomous Driving Stress (ADS), designed to enhance the safety and efficiency of SAV route planning by quantitatively capturing the level of driving challenge encountered during autonomous operation. To predict ADS, a machine learning framework was developed, utilizing microscopic traffic simulation data that incorporates a comprehensive set of 22 input features describing SAV driving behavior, roadway characteristics, and prevailing traffic conditions. Among five machine learning algorithms evaluated, Random Forest exhibited superior predictive performance, achieving an accuracy of 80.9%. The proposed framework enables real-time ADS level prediction by continuously integrating streaming traffic data into the trained model. The dissemination of this real-time ADS information to SAVs supports proactive, informed, and dynamic route planning decisions, thereby enhancing operational safety, traffic flow, and the sustainability of SAV operations within urban mobility systems. Full article
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21 pages, 842 KB  
Article
Healing of Air—Embodied Interaction and Contextual Healing Experience Mechanism in Residential Air Environment
by Yanni Cai, Duan Wu and Hongtao Zhou
Buildings 2026, 16(7), 1342; https://doi.org/10.3390/buildings16071342 - 27 Mar 2026
Abstract
The modern high-pressure lifestyle has led to an increasing emphasis on the healing construction of residential spaces, while air, as an important environmental factor, has received little attention in terms of situational healing experiences within the context of residential culture. Employing grounded theory, [...] Read more.
The modern high-pressure lifestyle has led to an increasing emphasis on the healing construction of residential spaces, while air, as an important environmental factor, has received little attention in terms of situational healing experiences within the context of residential culture. Employing grounded theory, this study develops a theoretical model to explain the mechanism through which indoor air environments influence the healing benefits of residential spaces. Guided by the dynamic interaction process of “physical attributes–embodied cognition–behavioral regulation–social context”, the analysis focuses on human embodied perception and emotional responses to indoor air environments as the foundation for healing effects. It highlights the joint role of behavioral regulation and social context, ultimately affecting four levels of healing benefits. Furthermore, it systematically elaborates a theoretical model for embodied interactive residential air experiences, expanding healing environment theory from a contextual air experience perspective, and providing new research paradigm and insights for promoting healing benefits in residential settings. Full article
19 pages, 1357 KB  
Article
Clinically Aligned Long-Context Transformers for Cross-Platform Mental Health Risk Detection
by Aditya Tekale and Mohammad Masum
Electronics 2026, 15(7), 1403; https://doi.org/10.3390/electronics15071403 - 27 Mar 2026
Abstract
Social media platforms contain rich but noisy narratives of psychological distress, creating opportunities for early mental health risk detection. However, existing datasets capture heterogeneous constructs such as suicide risk severity, depression diagnosis, and DSM-5 symptom presence, and most prior models are trained and [...] Read more.
Social media platforms contain rich but noisy narratives of psychological distress, creating opportunities for early mental health risk detection. However, existing datasets capture heterogeneous constructs such as suicide risk severity, depression diagnosis, and DSM-5 symptom presence, and most prior models are trained and evaluated on a single corpus, limiting their clinical alignment and cross-dataset generalizability. In this study, we fine-tune a domain-specific long-document transformer, AIMH/Mental-Longformer-base-4096, for binary mental health risk detection (risk vs. no risk) using two clinically aligned Reddit datasets: the C-SSRS Reddit corpus and the eRisk 2025 depression dataset. To handle long user histories, we introduce an LLM-based summarization pipeline that compresses posts exceeding 2000 tokens while preserving mental health-relevant information. We also conduct a seven-configuration ablation study across combinations of three corpora (C-SSRS, eRisk, and ReDSM5) to examine how dataset semantics influence model performance. On a held-out C-SSRS + eRisk test set (n = 279), the proposed model achieves a mean balanced accuracy of 0.89 ± 0.01 across five random seeds, with a best run of 0.90 and a 5.74 percentage point improvement over the strongest baseline (TF-IDF + Random Forest). The model also shows strong cross-platform generalization, achieving BA = 0.78 on the depression-reddit-cleaned dataset (n = 7731) and BA = 0.85 (ROC-AUC = 0.92) on a Twitter suicidal-intention dataset (n = 9119) without additional fine-tuning. The ablation analysis shows that although a three-dataset configuration (C-SSRS + eRisk + ReDSM5) maximizes aggregate performance, the ReDSM5 labels encode symptom presence rather than clinical risk, creating a semantic mismatch. This finding highlights the importance of label compatibility when combining heterogeneous mental health corpora. Explainability analysis using Integrated Gradients and attention visualization shows that the model focuses on clinically meaningful expressions such as therapy references, diagnosis, and hopelessness rather than isolated keywords. These results demonstrate that clinically aligned long-context transformers can provide accurate and interpretable mental health risk detection from social media while emphasizing the critical role of dataset semantics in multi-corpus training. Full article
(This article belongs to the Special Issue Role of Artificial Intelligence in Natural Language Processing)
13 pages, 44672 KB  
Article
ARMANI: Dictionary-Learning-Inspired Data-Free Deep Generative Modeling with Meta-Attention and Implicit Preconditioning for Compressively Sampled Magnetic Resonance Imaging
by Ming Wu, Jing Cheng, Qingyong Zhu and Dong Liang
Electronics 2026, 15(7), 1402; https://doi.org/10.3390/electronics15071402 - 27 Mar 2026
Abstract
Magnetic resonance imaging (MRI) reconstruction from undersampled k-space data enables accelerated acquisition but leads to a severely ill-posed inverse problem. Although supervised deep learning methods have achieved strong performance, they typically rely on large paired datasets that are difficult to obtain in clinical [...] Read more.
Magnetic resonance imaging (MRI) reconstruction from undersampled k-space data enables accelerated acquisition but leads to a severely ill-posed inverse problem. Although supervised deep learning methods have achieved strong performance, they typically rely on large paired datasets that are difficult to obtain in clinical practice. To address these limitations, we propose a dictionary-learning-inspired dAta-fRee deep generative modeling with Meta-Attention and implicit precoNditIoning for compressively sampled MRI (CS-MRI), termed ARMANI. Specifically, a meta-attention-augmented deep image prior (MA-DIP) generator performs a joint optimization over the latent input η and the network parameter θ, where η is regularized via gradient-domain sparsity and θ is constrained by a ridge penalty, mirroring the adaptive estimation of sparse coefficients and an empirical sparsifying dictionary. Furthermore, we integrate a single-step pseudo-orthogonal projection to achieve implicit preconditioning, which modulates the loss landscape and mitigates ill-conditioning of the forward operator. Experimental results demonstrate that ARMANI consistently outperforms existing SOTA data-free and self-supervised methods, and, with limited training data, achieves performance comparable to or slightly better than the supervised benchmark MoDL, with effective artifact suppression and faithful recovery of fine structural details. Overall, ARMANI shows strong scalability and potential for practical deployment in fully data-free CS-MRI reconstruction scenarios. Full article
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21 pages, 922 KB  
Article
DBCF-Net: A Dual-Branch Cross-Scale Fusion Network for Heterogeneous Satellite–UAV Change Detection
by Yan Ren, Ruiyong Li, Pengbo Zhai and Xinyu Chen
Remote Sens. 2026, 18(7), 1009; https://doi.org/10.3390/rs18071009 - 27 Mar 2026
Abstract
Heterogeneous change detection (HCD) using satellite and Unmanned Aerial Vehicle (UAV) imagery is a pivotal task in remote sensing and Earth observation. However, the effective utilization of such multi-source data is significantly hindered by extreme spatial resolution disparities and distinct radiometric characteristics. Existing [...] Read more.
Heterogeneous change detection (HCD) using satellite and Unmanned Aerial Vehicle (UAV) imagery is a pivotal task in remote sensing and Earth observation. However, the effective utilization of such multi-source data is significantly hindered by extreme spatial resolution disparities and distinct radiometric characteristics. Existing deep learning methods, often based on weight-sharing Siamese architectures, struggle to bridge these domain gaps, leading to spectral pseudo-changes and blurred detection boundaries. To address these challenges, we propose a novel Dual-Branch Cross-Scale Fusion Network (DBCF-Net) specifically tailored for heterogeneous satellite–UAV change detection. We introduce a Difference-Aware Attention Module (DAAM) to explicitly align cross-modal feature spaces and suppress domain-related noise through a hybrid local–global attention mechanism. Furthermore, an Adaptive Gated Fusion Module (AGFM) is designed to dynamically weight multi-scale interactions, ensuring the preservation of high-frequency spatial details from UAV imagery while maintaining the semantic consistency of satellite data. Extensive experiments on the Heterogeneous Satellite–UAV Dataset (HSUD) demonstrate that DBCF-Net achieves state-of-the-art performance, reaching an F1-score of 88.75% and an IoU of 80.58%. This study provides a robust technical framework for heterogeneous sensor fusion and high-precision monitoring in complex remote sensing scenarios. Full article
(This article belongs to the Section Remote Sensing Image Processing)
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