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  • Open Access

    ARTICLE

    Semantic Knowledge Based Reinforcement Learning Formalism for Smart Learning Environments

    Taimoor Hassan1, Ibrar Hussain1,*, Hafiz Mahfooz Ul Haque2, Hamid Turab Mirza3, Muhammad Nadeem Ali4, Byung-Seo Kim4,*

    CMC-Computers, Materials & Continua, Vol.85, No.1, pp. 2071-2094, 2025, DOI:10.32604/cmc.2025.068533 - 29 August 2025

    Abstract Smart learning environments have been considered as vital sources and essential needs in modern digital education systems. With the rapid proliferation of smart and assistive technologies, smart learning processes have become quite convenient, comfortable, and financially affordable. This shift has led to the emergence of pervasive computing environments, where user’s intelligent behavior is supported by smart gadgets; however, it is becoming more challenging due to inconsistent behavior of Artificial intelligence (AI) assistive technologies in terms of networking issues, slow user responses to technologies and limited computational resources. This paper presents a context-aware predictive reasoning based… More >

  • Open Access

    ARTICLE

    Dynamic Decoupling-Driven Cooperative Pursuit for Multi-UAV Systems: A Multi-Agent Reinforcement Learning Policy Optimization Approach

    Lei Lei1, Chengfu Wu2,*, Huaimin Chen2

    CMC-Computers, Materials & Continua, Vol.85, No.1, pp. 1339-1363, 2025, DOI:10.32604/cmc.2025.067117 - 29 August 2025

    Abstract This paper proposes a Multi-Agent Attention Proximal Policy Optimization (MA2PPO) algorithm aiming at the problems such as credit assignment, low collaboration efficiency and weak strategy generalization ability existing in the cooperative pursuit tasks of multiple unmanned aerial vehicles (UAVs). Traditional algorithms often fail to effectively identify critical cooperative relationships in such tasks, leading to low capture efficiency and a significant decline in performance when the scale expands. To tackle these issues, based on the proximal policy optimization (PPO) algorithm, MA2PPO adopts the centralized training with decentralized execution (CTDE) framework and introduces a dynamic decoupling mechanism,… More >

  • Open Access

    ARTICLE

    An IoT-Enabled Hybrid DRL-XAI Framework for Transparent Urban Water Management

    Qamar H. Naith1,*, H. Mancy2,3

    CMES-Computer Modeling in Engineering & Sciences, Vol.144, No.1, pp. 387-405, 2025, DOI:10.32604/cmes.2025.066917 - 31 July 2025

    Abstract Effective water distribution and transparency are threatened with being outrightly undermined unless the good name of urban infrastructure is maintained. With improved control systems in place to check leakage, variability of pressure, and conscientiousness of energy, issues that previously went unnoticed are now becoming recognized. This paper presents a grandiose hybrid framework that combines Multi-Agent Deep Reinforcement Learning (MADRL) with Shapley Additive Explanations (SHAP)-based Explainable AI (XAI) for adaptive and interpretable water resource management. In the methodology, the agents perform decentralized learning of the control policies for the pumps and valves based on the real-time… More >

  • Open Access

    REVIEW

    Phytochemicals as Multi-Target Therapeutic Agents for Oxidative Stress-Driven Pathologies: Mechanisms, Synergies, and Clinical Prospects

    Bismillah Mubeen1,2,#, Ammarah Hasnain2,3,#,*, Syed Atif Hasan Naqvi4, Fahad Hakim5, Syed Sheharyar Hassan Naqvi6, Muhammad Zeeshan Hassan4, Muhammad Umer Iqbal7, Mahmoud Moustafa8, Mohammed O. Alshaharni8, Mingzheng Duan1,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.7, pp. 1941-1971, 2025, DOI:10.32604/phyton.2025.064056 - 31 July 2025

    Abstract Plants have long served as a cornerstone for drug discovery, offering a vast repertoire of bioactive compounds with proven efficacy in combating oxidative stress, a pivotal driver of chronic diseases such as cancer, diabetes, cardiovascular disorders, and neurodegenerative conditions. This review synthesizes current knowledge on plant-derived antioxidants, emphasizing their mechanisms, therapeutic potential, and quantitative efficacy validated through standardized assays. Key phytochemicals, including polyphenols, carotenoids, flavonoids, and terpenoids, neutralize reactive oxygen species (ROS) through radical scavenging, enzyme modulation, and gene regulation. For instance, lutein, a carotenoid found in leafy greens, demonstrates potent antioxidant activity with IC50 values… More >

  • Open Access

    ARTICLE

    A Generative Neuro-Cognitive Architecture Using Quantum Algorithms for the Autonomous Behavior of a Smart Agent in a Simulation Environment

    Evren Daglarli*

    CMC-Computers, Materials & Continua, Vol.84, No.3, pp. 4511-4537, 2025, DOI:10.32604/cmc.2025.065572 - 30 July 2025

    Abstract This study aims to develop a quantum computing-based neurocognitive architecture that allows an agent to perform autonomous behaviors. Therefore, we present a brain-inspired cognitive architecture for autonomous agents that integrates a prefrontal cortex–inspired model with modern deep learning (a transformer-based reinforcement learning module) and quantum algorithms. In particular, our framework incorporates quantum computational routines (Deutsch–Jozsa, Bernstein–Vazirani, and Grover’s search) to enhance decision-making efficiency. As a novelty of this research, this comprehensive computational structure is empowered by quantum computing operations so that superiority in speed and robustness of learning compared to classical methods can be demonstrated.… More >

  • Open Access

    ARTICLE

    Targeting c-Src/PKCα/MAPK/NF-κB: Salvianolic Acid A as a Protective Agent against Silica Nanoparticle-Induced Lung Inflammation

    Yan-Jyun Lin1,#, I-Ta Lee2,#, Wen-Bin Wu3,4, Chien-Chung Yang5,6, Chiang-Wen Lee7,8,9, Fuu-Jen Tsai10,11,12, Hui-Ching Tseng13, Wei-Ning Lin4, Li-Der Hsiao4, Chuen-Mao Yang4,*

    BIOCELL, Vol.49, No.7, pp. 1265-1290, 2025, DOI:10.32604/biocell.2025.066223 - 25 July 2025

    Abstract Background: Silica nanoparticles (SiNPs), commonly utilized in industrial and biomedical fields, are known to provoke pulmonary inflammation by elevating cyclooxygenase-2 (COX-2) levels in human pulmonary alveolar epithelial cells (HPAEpiCs). Salvianolic acid A (SAA), a water-soluble polyphenol extracted from Salvia miltiorrhiza (Danshen), possesses well-documented antioxidant and anti-inflammatory activities. Nevertheless, its potential to counteract SiNP-induced inflammatory responses in the lung has not been thoroughly explored. Objective: This study aimed to evaluate the protective role and mechanistic actions of SAA against SiNP-triggered inflammation in both cellular and animal models. Methods: HPAEpiCs were pre-incubated with SAA prior to SiNP exposure to… More >

  • Open Access

    ARTICLE

    Nigericin-induced apoptosis in acute myeloid leukemia via mitochondrial dysfunction and oxidative stress

    BHAVYADHARSHINI ARUN1,#, PRARTHANA GOPINATH1,2,#, ANUP JHA1,3, NISHTHA TRIPATHI1, SYED G DASTAGER4,*, SYED K HASAN1,3,*

    Oncology Research, Vol.33, No.8, pp. 2161-2174, 2025, DOI:10.32604/or.2025.062951 - 18 July 2025

    Abstract Background: Acute Myeloid Leukemia (AML) is a highly aggressive clonal hematological malignancy with limited treatment options. This study aimed to evaluate the therapeutic potential of nigericin, a polyether ionophore derived from Streptomyces DASNCL-29, as a mitochondrial-targeted agent for AML treatment. Methods: Nigericin was isolated from Streptomyces DASNCL-29 and characterized via chromatography and NMR. Its cytotoxicity was tested in MOLM13 (sensitive and venetoclax-resistant) and HL60 (sensitive and cytarabine-resistant) cells using the MTT assay. Mitochondrial dysfunction was assessed by measuring reactive oxygen species (ROS), mitochondrial membrane potential (Δψm), and mitochondrial mass. Apoptosis was evaluated with Annexin V/PI assays… More > Graphic Abstract

    Nigericin-induced apoptosis in acute myeloid leukemia via mitochondrial dysfunction and oxidative stress

  • Open Access

    ARTICLE

    Synergistic Effect of Silicone Macromolecular Charring Agent and Ammonium Polyphosphate on Improving Flame Retardancy and Mechanical Properties of Ethylene-Butyl Acrylate Copolymer Composites

    Xuan Huo1, Bingchen Wu1, Yuanmeng Lou1, Junlin Zhu1, Cui Li1, Lili Ma1, Ye-Tang Pan2, Chuncheng Hao1,*, Xin Wen1,*

    Journal of Polymer Materials, Vol.42, No.2, pp. 517-530, 2025, DOI:10.32604/jpm.2025.065320 - 14 July 2025

    Abstract Power cables are important pieces of equipment for energy transmission, but achieving a good balance between flame retardancy and mechanical properties of cable sheaths remains a challenge. In this work, a novel intumescent flame retardant (IFR) system containing silicone-containing macromolecular charring agent (Si-MCA) and ammonium polyphosphate (APP) was designed to synergistically improve the flame retardancy and mechanical properties of ethylene-butyl acrylate copolymer (EBA) composites. The optimal mass ratio of APP/Si-MCA was 3/1 in EBA composites (EBA/APP-Si-31), corresponding to the best flame retardancy with 31.2% of limited oxygen index (LOI), V-0 rating in UL-94 vertical burning More > Graphic Abstract

    Synergistic Effect of Silicone Macromolecular Charring Agent and Ammonium Polyphosphate on Improving Flame Retardancy and Mechanical Properties of Ethylene-Butyl Acrylate Copolymer Composites

  • Open Access

    ARTICLE

    Multi-Agent Reinforcement Learning for Moving Target Defense Temporal Decision-Making Approach Based on Stackelberg-FlipIt Games

    Rongbo Sun, Jinlong Fei*, Yuefei Zhu, Zhongyu Guo

    CMC-Computers, Materials & Continua, Vol.84, No.2, pp. 3765-3786, 2025, DOI:10.32604/cmc.2025.064849 - 03 July 2025

    Abstract Moving Target Defense (MTD) necessitates scientifically effective decision-making methodologies for defensive technology implementation. While most MTD decision studies focus on accurately identifying optimal strategies, the issue of optimal defense timing remains underexplored. Current default approaches—periodic or overly frequent MTD triggers—lead to suboptimal trade-offs among system security, performance, and cost. The timing of MTD strategy activation critically impacts both defensive efficacy and operational overhead, yet existing frameworks inadequately address this temporal dimension. To bridge this gap, this paper proposes a Stackelberg-FlipIt game model that formalizes asymmetric cyber conflicts as alternating control over attack surfaces, thereby capturing More >

  • Open Access

    ARTICLE

    An Improved Multi-Actor Hybrid Attention Critic Algorithm for Cooperative Navigation in Urban Low-Altitude Logistics Environments

    Chao Li1,3,#, Quanzhi Feng1,3,#, Caichang Ding2,*, Zhiwei Ye1,3

    CMC-Computers, Materials & Continua, Vol.84, No.2, pp. 3605-3621, 2025, DOI:10.32604/cmc.2025.063703 - 03 July 2025

    Abstract The increasing adoption of unmanned aerial vehicles (UAVs) in urban low-altitude logistics systems, particularly for time-sensitive applications like parcel delivery and supply distribution, necessitates sophisticated coordination mechanisms to optimize operational efficiency. However, the limited capability of UAVs to extract state-action information in complex environments poses significant challenges to achieving effective cooperation in dynamic and uncertain scenarios. To address this, we presents an Improved Multi-Agent Hybrid Attention Critic (IMAHAC) framework that advances multi-agent deep reinforcement learning (MADRL) through two key innovations. Firstly, a Temporal Difference Error and Time-based Prioritized Experience Replay (TT-PER) mechanism that dynamically adjusts… More >

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