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  • Open Access

    ARTICLE

    A Deep Reinforcement Learning-Based Partitioning Method for Power System Parallel Restoration

    Changcheng Li1,2, Weimeng Chang1,2, Dahai Zhang1,*, Jinghan He1

    Energy Engineering, Vol.123, No.1, 2026, DOI:10.32604/ee.2025.069389 - 27 December 2025

    Abstract Effective partitioning is crucial for enabling parallel restoration of power systems after blackouts. This paper proposes a novel partitioning method based on deep reinforcement learning. First, the partitioning decision process is formulated as a Markov decision process (MDP) model to maximize the modularity. Corresponding key partitioning constraints on parallel restoration are considered. Second, based on the partitioning objective and constraints, the reward function of the partitioning MDP model is set by adopting a relative deviation normalization scheme to reduce mutual interference between the reward and penalty in the reward function. The soft bonus scaling mechanism… More >

  • Open Access

    ARTICLE

    OCR-Assisted Masked BERT for Homoglyph Restoration towards Multiple Phishing Text Downstream Tasks

    Hanyong Lee#, Ye-Chan Park#, Jaesung Lee*

    CMC-Computers, Materials & Continua, Vol.85, No.3, pp. 4977-4993, 2025, DOI:10.32604/cmc.2025.068156 - 23 October 2025

    Abstract Restoring texts corrupted by visually perturbed homoglyph characters presents significant challenges to conventional Natural Language Processing (NLP) systems, primarily due to ambiguities arising from characters that appear visually similar yet differ semantically. Traditional text restoration methods struggle with these homoglyph perturbations due to limitations such as a lack of contextual understanding and difficulty in handling cases where one character maps to multiple candidates. To address these issues, we propose an Optical Character Recognition (OCR)-assisted masked Bidirectional Encoder Representations from Transformers (BERT) model specifically designed for homoglyph-perturbed text restoration. Our method integrates OCR preprocessing with a… More >

  • Open Access

    ARTICLE

    Moderate Grazing Disturbance Can Promote the Leymus chinensis Grasslands’ Recovery through the Existing Bud Banks in Northern China

    Qun Ma1, Zhimin Liu1, Quanlai Zhou1, Wei Liang1,*, Jing Wu2,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.7, pp. 2183-2194, 2025, DOI:10.32604/phyton.2025.067807 - 31 July 2025

    Abstract The Leymus chinensis grassland is one of the most widely distributed associations in the warm temperate grassland and due to overgrazing in recent years, it has experienced varying degrees of degradation. Vegetative regeneration via bud banks serves as the primary way of vegetation reproduction in the L. chinensis grassland ecosystem. However, the role of the bud bank in the vegetation regeneration of grazing grassland remains unclear. Based on the relationship between the under-ground bud bank and above-ground vegetation of L. chinensis grassland under different grazing stages, this study aimed to explore whether the grazing grassland could self-recover through… More >

  • Open Access

    ARTICLE

    Vegetation Cover Change and Its Driving Factors in the Chengdu-Chongqing Urban Agglomeration in the Past 20 Years

    Wuyi Zhu1, Meng Zou1, Wenji Liu1, Linlin Cui2,*

    Revue Internationale de Géomatique, Vol.34, pp. 363-377, 2025, DOI:10.32604/rig.2025.065708 - 14 July 2025

    Abstract Exploring the spatiotemporal changes in Fractional Vegetation Coverage (FVC) helps to more accurately understand the quality of the ecological environment, which is of great significance for regional ecological protection and sustainable economic development. The study takes the Chengdu-Chongqing urban agglomeration as the research area, analyzes the characteristics and trends of vegetation cover changes from 2000 to 2020 using the Google Earth Engine cloud platform, and explores its driving factors based on the enhanced regression tree model. The results show that: (1) From 2000 to 2020, the annual FVC of the Chengdu-Chongqing urban agglomeration showed a… More >

  • Open Access

    ARTICLE

    Lightweight Deep Learning Model and Novel Dataset for Restoring Damaged Barcodes and QR Codes in Logistics Applications

    Tarek Muallim1, Haluk Kucuk2,*, Muhammet Bareket1, Metin Kahraman1

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.3, pp. 3557-3581, 2025, DOI:10.32604/cmes.2025.064733 - 30 June 2025

    Abstract This study introduces a lightweight deep learning model and a novel synthetic dataset designed to restore damaged one-dimensional (1D) barcodes and Quick Response (QR) codes, addressing critical challenges in logistics operations. The proposed solution leverages an efficient Pix2Pix-based framework, a type of conditional Generative Adversarial Network (GAN) optimized for image-to-image translation tasks, enabling the recovery of degraded barcodes and QR codes with minimal computational overhead. A core contribution of this work is the development of a synthetic dataset that simulates realistic damage scenarios frequently encountered in logistics environments, such as low contrast, misalignment, physical wear,… More >

  • Open Access

    ARTICLE

    Coordinated Service Restoration of Integrated Power and Gas Systems with Renewable Energy Sources

    Xincong Shi1,2, Yuze Ji3,*, Xinrui Wang3, Ruimin Tian3, Chao Zhang2

    Energy Engineering, Vol.122, No.3, pp. 1199-1220, 2025, DOI:10.32604/ee.2025.061586 - 07 March 2025

    Abstract With the development of integrated power and gas distribution systems (IPGS) incorporating renewable energy sources (RESs), coordinating the restoration processes of the power distribution system (PS) and the gas distribution system (GS) by utilizing the benefits of RESs enhances service restoration. In this context, this paper proposes a coordinated service restoration framework that considers the uncertainty in RESs and the bi-directional restoration interactions between the PS and GS. Additionally, a coordinated service restoration model is developed considering the two systems’ interdependency and the GS’s dynamic characteristics. The objective is to maximize the system resilience index… More >

  • Open Access

    ARTICLE

    Masked Face Restoration Model Based on Lightweight GAN

    Yitong Zhou, Tianliang Lu*

    CMC-Computers, Materials & Continua, Vol.82, No.2, pp. 3591-3608, 2025, DOI:10.32604/cmc.2024.057554 - 17 February 2025

    Abstract Facial recognition systems have become increasingly significant in public security efforts. They play a crucial role in apprehending criminals and locating missing children and elderly individuals. Nevertheless, in practical applications, around 30% to 50% of images are obstructed to varied extents, for as by the presence of masks, glasses, or hats. Repairing the masked facial images will enhance face recognition accuracy by 10% to 20%. Simultaneously, market research indicates a rising demand for efficient facial recognition technology within the security and surveillance sectors, with projections suggesting that the global facial recognition market would exceed US$3… More >

  • Open Access

    REVIEW

    A Survey of Link Failure Detection and Recovery in Software-Defined Networks

    Suheib Alhiyari, Siti Hafizah AB Hamid*, Nur Nasuha Daud

    CMC-Computers, Materials & Continua, Vol.82, No.1, pp. 103-137, 2025, DOI:10.32604/cmc.2024.059050 - 03 January 2025

    Abstract Software-defined networking (SDN) is an innovative paradigm that separates the control and data planes, introducing centralized network control. SDN is increasingly being adopted by Carrier Grade networks, offering enhanced network management capabilities than those of traditional networks. However, because SDN is designed to ensure high-level service availability, it faces additional challenges. One of the most critical challenges is ensuring efficient detection and recovery from link failures in the data plane. Such failures can significantly impact network performance and lead to service outages, making resiliency a key concern for the effective adoption of SDN. Since the More >

  • Open Access

    ARTICLE

    A Decentralized and TCAM-Aware Failure Recovery Model in Software Defined Data Center Networks

    Suheib Alhiyari, Siti Hafizah AB Hamid*, Nur Nasuha Daud

    CMC-Computers, Materials & Continua, Vol.82, No.1, pp. 1087-1107, 2025, DOI:10.32604/cmc.2024.058953 - 03 January 2025

    Abstract Link failure is a critical issue in large networks and must be effectively addressed. In software-defined networks (SDN), link failure recovery schemes can be categorized into proactive and reactive approaches. Reactive schemes have longer recovery times while proactive schemes provide faster recovery but overwhelm the memory of switches by flow entries. As SDN adoption grows, ensuring efficient recovery from link failures in the data plane becomes crucial. In particular, data center networks (DCNs) demand rapid recovery times and efficient resource utilization to meet carrier-grade requirements. This paper proposes an efficient Decentralized Failure Recovery (DFR) model… More >

  • Open Access

    REVIEW

    Neural stem cell-derived exosomes: a cell-free transplant for potential cure of neurological diseases

    JIAJUN HUANG1,#, WEI WANG1,#, WENTONG LIN2, HENGSEN CAI3, ZHIHAN ZHU1, WAQAS AHMED4, QIANKUN ZHANG1, JIALE LIU1, YIFAN ZHANG1, RONG LI1, ZHINUO LI1, AHSAN ALI KHAN5, DENG LU3, YONG HU6, LUKUI CHEN1,*

    BIOCELL, Vol.48, No.10, pp. 1405-1418, 2024, DOI:10.32604/biocell.2024.053148 - 02 October 2024

    Abstract Degeneration and death of nerve cells are inevitable with the occurrence and progression of nervous system disorders. Researchers transplanted neural stem cells into relevant areas, trying to solve the difficulty of neural cell loss by differentiating neural stem cells into various nerve cells. In recent years, however, studies have shown that transplanted neural stem cells help neural tissues regenerate and return to normal through paracrine action rather than just replacing cells. Exosomes are essential paracrine mediators, which can participate in cell communication through substance transmission. In this regard, this review mainly discusses the current research More >

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