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  • Open Access

    ARTICLE

    The longitudinal relationship between active use of social network sites and loneliness: Examining the mediating effects of positive feedback and social support

    Jing Wu1,2,*, Yuan Gao2, Quanlu Hao2, Zhun Liu3, Weijie Meng1

    Journal of Psychology in Africa, Vol.35, No.6, pp. 871-876, 2025, DOI:10.32604/jpa.2025.075981 - 30 December 2025

    Abstract This study employed a longitudinal approach to investigate how positive feedback and social support mediate the connection between active social network use and feelings of loneliness. A total of 811 college students (females = 58.20%, Mage = 19.15, SD = 0.99) participated in this research study. At T1 time point, students completed the Active SNS Questionnaire. At T2 time point, students completed the online versions of the Positive Feedback Scale, Perceived Social Support Multidimensional Scale, and UCLA Loneliness Scale. T2 online positive feedback influences how T1 actively uses their social network, which relates to T2 loneliness, More >

  • Open Access

    ARTICLE

    AutoSHARC: Feedback Driven Explainable Intrusion Detection with SHAP-Guided Post-Hoc Retraining for QoS Sensitive IoT Networks

    Muhammad Saad Farooqui1, Aizaz Ahmad Khattak2, Bakri Hossain Awaji3, Nazik Alturki4, Noha Alnazzawi5, Muhammad Hanif6,*, Muhammad Shahbaz Khan2

    CMES-Computer Modeling in Engineering & Sciences, Vol.145, No.3, pp. 4395-4439, 2025, DOI:10.32604/cmes.2025.072023 - 23 December 2025

    Abstract Quality of Service (QoS) assurance in programmable IoT and 5G networks is increasingly threatened by cyberattacks such as Distributed Denial of Service (DDoS), spoofing, and botnet intrusions. This paper presents AutoSHARC, a feedback-driven, explainable intrusion detection framework that integrates Boruta and LightGBM–SHAP feature selection with a lightweight CNN–Attention–GRU classifier. AutoSHARC employs a two-stage feature selection pipeline to identify the most informative features from high-dimensional IoT traffic and reduces 46 features to 30 highly informative ones, followed by post-hoc SHAP-guided retraining to refine feature importance, forming a feedback loop where only the most impactful attributes are More >

  • Open Access

    ARTICLE

    UHMK1 Promotes Prostate Cancer Progression through a Positive Feedback Loop with MTHFD2

    Chi Zhang1,#, Xi Huang2,#, Cheng Hu1, Bowen Tang1, Jianjie Wu1, Zhuolun Sun1, Weian Zhu1, Xiangfu Zhou1, Hengjun Xiao1,*, Hua Wang1,*

    Oncology Research, Vol.33, No.9, pp. 2331-2351, 2025, DOI:10.32604/or.2025.065119 - 28 August 2025

    Abstract Background: U2AF homology motif kinase 1 (UHMK1) has been associated with RNA processing and protein phosphorylation, thereby influencing tumor progression. The study aimed to explore its regulatory mechanisms and biological functions in human prostate cancer (PCa). Methods: In this study, we systematically evaluated the expression and prognostic significance of UHMK1 in public databases, followed by validation through immunohistochemistry (IHC) in PCa specimens. Both gain-of-function and loss-of-function experiments were conducted to elucidate the role of UHMK1 in vitro and in vivo. Additionally, a series of molecular and biochemical assays were performed to investigate the regulatory mechanisms underlying UHMK1… More >

  • Open Access

    ARTICLE

    A Transformer Based on Feedback Attention Mechanism for Diagnosis of Coronary Heart Disease Using Echocardiographic Images

    Chunlai Du1,#, Xin Gu1,#, Yanhui Guo2,*, Siqi Guo3, Ziwei Pang3, Yi Du3, Guoqing Du3,*

    CMC-Computers, Materials & Continua, Vol.83, No.2, pp. 3435-3450, 2025, DOI:10.32604/cmc.2025.060212 - 16 April 2025

    Abstract Coronary artery disease is a highly lethal cardiovascular condition, making early diagnosis crucial for patients. Echocardiograph is employed to identify coronary heart disease (CHD). However, due to issues such as fuzzy object boundaries, complex tissue structures, and motion artifacts in ultrasound images, it is challenging to detect CHD accurately. This paper proposes an improved Transformer model based on the Feedback Self-Attention Mechanism (FSAM) for classification of ultrasound images. The model enhances attention weights, making it easier to capture complex features. Experimental results show that the proposed method achieves high levels of accuracy, recall, precision, F1 More >

  • Open Access

    ARTICLE

    AI-Driven Sentiment Analysis: Understanding Customer Feedbacks on Women’s Clothing through CNN and LSTM

    Phan-Anh-Huy Nguyen*, Luu-Luyen Than

    Intelligent Automation & Soft Computing, Vol.40, pp. 221-234, 2025, DOI:10.32604/iasc.2025.058976 - 14 April 2025

    Abstract The burgeoning e-commerce industry has made online customer reviews a crucial source of feedback for businesses. Sentiment analysis, a technique used to extract subjective information from text, has become essential for understanding consumer sentiment and preferences. However, traditional sentiment analysis methods often struggle with the nuances and context of natural language. To address these issues, this study proposes a comparison of deep learning models that figure out the optimal method to accurately analyze consumer reviews on women's clothing. CNNs excel at capturing local features and semantic information, while LSTMs are adept at handling long-range dependencies… More >

  • Open Access

    ARTICLE

    Online Optimization to Suppress the Grid-Injected Power Deviation of Wind Farms with Battery-Hydrogen Hybrid Energy Storage Systems

    Min Liu1, Qiliang Wu1, Zhixin Li2, Bo Zhao1, Leiqi Zhang1, Junhui Li2, Xingxu Zhu2,*

    Energy Engineering, Vol.122, No.4, pp. 1403-1424, 2025, DOI:10.32604/ee.2025.060256 - 31 March 2025

    Abstract To address the issue of coordinated control of multiple hydrogen and battery storage units to suppress the grid-injected power deviation of wind farms, an online optimization strategy for Battery-hydrogen hybrid energy storage systems based on measurement feedback is proposed. First, considering the high charge/discharge losses of hydrogen storage and the low energy density of battery storage, an operational optimization objective is established to enable adaptive energy adjustment in the Battery-hydrogen hybrid energy storage system. Next, an online optimization model minimizing the operational cost of the hybrid system is constructed to suppress grid-injected power deviations with… More >

  • Open Access

    ARTICLE

    Salient Object Detection Based on Multi-Strategy Feature Optimization

    Libo Han1,2, Sha Tao1,2, Wen Xia3, Weixin Sun3, Li Yan3, Wanlin Gao1,2,3,*

    CMC-Computers, Materials & Continua, Vol.82, No.2, pp. 2431-2449, 2025, DOI:10.32604/cmc.2024.057833 - 17 February 2025

    Abstract At present, salient object detection (SOD) has achieved considerable progress. However, the methods that perform well still face the issue of inadequate detection accuracy. For example, sometimes there are problems of missed and false detections. Effectively optimizing features to capture key information and better integrating different levels of features to enhance their complementarity are two significant challenges in the domain of SOD. In response to these challenges, this study proposes a novel SOD method based on multi-strategy feature optimization. We propose the multi-size feature extraction module (MSFEM), which uses the attention mechanism, the multi-level feature… More >

  • Open Access

    ARTICLE

    Improve Strategy for Transient Power Angle Stability Control of VSG Combining Frequency Difference Feedback and Virtual Impedance

    Dianlang Wang1, Qi Yin1, Haifeng Wang1, Jing Chen1, Hong Miao2, Yihan Chen2,*

    Energy Engineering, Vol.122, No.2, pp. 651-666, 2025, DOI:10.32604/ee.2025.057670 - 31 January 2025

    Abstract As the penetration rate of distributed energy increases, the transient power angle stability problem of the virtual synchronous generator (VSG) has gradually become prominent. In view of the situation that the grid impedance ratio (R/X) is high and affects the transient power angle stability of VSG, this paper proposes a VSG transient power angle stability control strategy based on the combination of frequency difference feedback and virtual impedance. To improve the transient power angle stability of the VSG, a virtual impedance is adopted in the voltage loop to adjust the impedance ratio R/X; and the… More >

  • Open Access

    REVIEW

    Control Structures and Algorithms for Force Feedback Bilateral Teleoperation Systems: A Comprehensive Review

    Jiawei Tian1, Yu Zhou1, Lirong Yin2,*, Salman A. AlQahtani3, Minyi Tang4, Siyu Lu4, Ruiyang Wang4, Wenfeng Zheng3,4,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.142, No.2, pp. 973-1019, 2025, DOI:10.32604/cmes.2024.057261 - 27 January 2025

    Abstract Force feedback bilateral teleoperation represents a pivotal advancement in control technology, finding widespread application in hazardous material transportation, perilous environments, space and deep-sea exploration, and healthcare domains. This paper traces the evolutionary trajectory of force feedback bilateral teleoperation from its conceptual inception to its current complexity. It elucidates the fundamental principles underpinning interaction forces and tactile exchanges, with a specific emphasis on the crucial role of tactile devices. In this review, a quantitative analysis of force feedback bilateral teleoperation development trends from 2011 to 2024 has been conducted, utilizing published journal article data as the… More >

  • Open Access

    ARTICLE

    A Cross Attention Transformer-Mixed Feedback Video Recommendation Algorithm Based on DIEN

    Jianwei Zhang1,2,*, Zhishang Zhao3, Zengyu Cai3, Yuan Feng4, Liang Zhu3, Yahui Sun3

    CMC-Computers, Materials & Continua, Vol.82, No.1, pp. 977-996, 2025, DOI:10.32604/cmc.2024.058438 - 03 January 2025

    Abstract The rapid development of short video platforms poses new challenges for traditional recommendation systems. Recommender systems typically depend on two types of user behavior feedback to construct user interest profiles: explicit feedback (interactive behavior), which significantly influences users’ short-term interests, and implicit feedback (viewing time), which substantially affects their long-term interests. However, the previous model fails to distinguish between these two feedback methods, leading it to predict only the overall preferences of users based on extensive historical behavior sequences. Consequently, it cannot differentiate between users’ long-term and short-term interests, resulting in low accuracy in describing… More >

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