期刊文献+
共找到265,599篇文章
< 1 2 250 >
每页显示 20 50 100
Intelligent Resource Allocation for Multiaccess Edge Computing in 5G Ultra-Dense Slicing Network Using Federated Multiagent DDPG Algorithm
1
作者 Gong Yu Gong Pengwei +3 位作者 Jiang He Xie Wen Wang Chenxi Xu Peijun 《China Communications》 2026年第1期273-289,共17页
Nowadays,advances in communication technology and cloud computing have spawned a variety of smart mobile devices,which will generate a great amount of computing-intensive businesses,and require corresponding resources... Nowadays,advances in communication technology and cloud computing have spawned a variety of smart mobile devices,which will generate a great amount of computing-intensive businesses,and require corresponding resources of computation and communication.Multiaccess edge computing(MEC)can offload computing-intensive tasks to the nearby edge servers,which alleviates the pressure of devices.Ultra-dense network(UDN)can provide effective spectrum resources by deploying a large number of micro base stations.Furthermore,network slicing can support various applications in different communication scenarios.Therefore,this paper integrates the ultra-dense network slicing and the MEC technology,and introduces a hybrid computing offloading strategy in order to satisfy various quality of service(QoS)of edge devices.In order to dynamically allocate limited resources,the above problem is formulated as multiagent distributed deep reinforcement learning(DRL),which will achieve low overhead computation offloading strategy and real-time resource allocation decisions.In this context,federated learning is added to train DRL agents in a distributed manner,where each agent is dedicated to exploring actions composed of offloading decisions and allocating resources,so as to jointly optimize system delay and energy consumption.Simulation results show that the proposed learning algorithm has better performance compared with other strategies in literature. 展开更多
关键词 federated learning multiaccess edge computing mutiagent deep reinforcement learning resource allocation ultra-dense slicing network
在线阅读 下载PDF
基于UHPC增强的新型装配式RCS组合节点抗震性能试验评估
2
作者 吴成龙 李昊 +3 位作者 牟犇 刘震涛 朱珍 俞浩 《中南大学学报(自然科学版)》 北大核心 2026年第1期246-258,共13页
装配式钢筋混凝土柱-钢梁(reinforced concrete column and steel beam,RCS)节点连接的安全性至关重要。针对现有装配式RCS节点存在的连接构造复杂和抗震性能不足等问题,本文提出了一种通过超高性能混凝土(ultra-high performance concr... 装配式钢筋混凝土柱-钢梁(reinforced concrete column and steel beam,RCS)节点连接的安全性至关重要。针对现有装配式RCS节点存在的连接构造复杂和抗震性能不足等问题,本文提出了一种通过超高性能混凝土(ultra-high performance concrete,UHPC)增强的新型装配式RCS组合节点(prefabricated RCS joints,PRCSJs)。通过低周往复荷载试验,对3个1/2缩尺的“十”字型PRCSJs试件的抗震性能进行研究,系统考察了轴压比和后浇混凝土强度对节点抗震性能的影响,并对PRCSJs的刚性进行了评估。研究结果表明:PRCSJs的破坏模式以节点核心区剪切破坏为主;PRCSJs的滞回曲线饱满,应力传递路径明确,强度和刚度退化性能稳定,延性系数(μ)在2.26~2.69之间,等效黏滞阻尼系数(h_(e))在0.29~0.36之间,展示出较好的抗震性能;后浇UHPC可有效提升节点的承载能力和混凝土的抗剪性能,但不利于提升节点的延性;当轴压比为0.15~0.3时,增大轴压比对提升PRCSJs节点的承载力、延性、耗能能力等具有显著的影响。根据节点刚性评估方法,PRCSJs属于半刚性连接和部分强度连接。 展开更多
关键词 装配式 rcS组合节点 榫卯连接 试验研究 刚性评估
在线阅读 下载PDF
锈蚀RC框架节点核心区剪切恢复力模型
3
作者 郑山锁 刘立国 +3 位作者 董立国 杨松 李健 丛峻 《建筑科学与工程学报》 北大核心 2026年第1期162-172,共11页
为满足一般大气条件下在役RC框架结构抗震分析的需求,对12榀RC框架节点进行了人工加速腐蚀和拟静力加载试验,探究了锈蚀水平、轴压比变化对节点破坏模式、滞回性能以及核心区抗剪性能的影响;基于试验结果的多参数回归分析,建立了锈蚀RC... 为满足一般大气条件下在役RC框架结构抗震分析的需求,对12榀RC框架节点进行了人工加速腐蚀和拟静力加载试验,探究了锈蚀水平、轴压比变化对节点破坏模式、滞回性能以及核心区抗剪性能的影响;基于试验结果的多参数回归分析,建立了锈蚀RC节点核心区的剪切恢复力模型,并在OpenSEES软件中利用Joint2D和纤维梁柱单元建立了锈蚀RC节点的组合体数值模型。结果表明:锈蚀RC节点的破坏模式均为节点核心区的剪切破坏,锈蚀程度与轴压比的增大会削弱RC节点及其核心区的承载能力与变形能力,导致抗震性能发生劣化;提出的剪切恢复力模型能够较全面反映不同锈蚀程度和不同轴压比RC节点核心区的剪切滞回特性;建立的锈蚀RC节点组合体数值模型的荷载模拟相对误差基本不超过10%,变形模拟相对误差基本不超过20%,最终破坏时的累积耗能相对误差也基本控制在30%以内;基于锈蚀RC节点核心区剪切恢复力模型所建立的节点组合体数值模型能够较准确模拟往复加载作用下锈蚀RC节点的滞回性能,可用于一般大气环境下RC节点及框架的抗震分析评估。 展开更多
关键词 锈蚀rc框架节点 剪切恢复力模型 抗震性能 OPENSEES
在线阅读 下载PDF
重力和粘结性能对RC梁冲击位移及尺度效应的影响分析
4
作者 李健 张仁波 +2 位作者 金浏 兰冬璆 杜修力 《振动工程学报》 北大核心 2026年第2期454-463,共10页
受试验成本与条件限制,根据缩尺试验结果和经典相似律预测原型足尺梁的响应已成为一种常用手段。为研究冲击荷载下经典相似律的适用性,开展了落锤冲击下RC梁跨中位移响应尺度效应的数值分析。建立了考虑重力和钢筋-混凝土粘结滑移关系... 受试验成本与条件限制,根据缩尺试验结果和经典相似律预测原型足尺梁的响应已成为一种常用手段。为研究冲击荷载下经典相似律的适用性,开展了落锤冲击下RC梁跨中位移响应尺度效应的数值分析。建立了考虑重力和钢筋-混凝土粘结滑移关系的RC梁有限元模型,对比了几何相似RC梁的归一化跨中位移时程与峰值,讨论了塑性、重力和粘结性能对RC梁跨中峰值位移及其尺度效应的影响。结果表明:低速冲击下,RC梁跨中峰值位移不满足经典相似律,随着结构尺寸的增大,归一化跨中峰值和残余位移逐渐增大;弹性梁与弹塑性梁和RC梁的冲击位移尺度效应规律不一致,塑性和损伤均为冲击位移产生尺度效应的原因之一;考虑重力和粘结滑移单一或共同作用后,RC梁跨中峰值位移增大,尺度效应增强;建议在开展大尺寸或原型RC梁低速冲击数值研究时考虑重力和粘结滑移作用,以保证跨中峰值位移结果的准确性,进而提高应用峰值位移进行评估或预测的可靠性。 展开更多
关键词 结构工程 低速冲击 数值分析 钢筋混凝土梁 尺度效应
在线阅读 下载PDF
接触爆炸作用下RC箱梁桥损伤机理试验与数值模拟研究
5
作者 闫秋实 吕辰旭 +1 位作者 杜修力 李述涛 《土木工程学报》 北大核心 2026年第2期113-125,共13页
作为关键基础设施的钢筋混凝土箱梁桥可能面临潜在的接触爆炸威胁。为揭示钢筋混凝土箱梁桥接触爆炸损伤机理,设计1/4比尺的3跨箱梁桥模型并开展野外化爆试验,分析箱梁桥的动力响应与损伤模式。采用LS-DYNA建立箱梁桥数值模型,通过与试... 作为关键基础设施的钢筋混凝土箱梁桥可能面临潜在的接触爆炸威胁。为揭示钢筋混凝土箱梁桥接触爆炸损伤机理,设计1/4比尺的3跨箱梁桥模型并开展野外化爆试验,分析箱梁桥的动力响应与损伤模式。采用LS-DYNA建立箱梁桥数值模型,通过与试验结果对比,验证数值模型准确性。基于数值模型分析箱梁内应力波传播过程,探究箱梁桥局部化损伤形成机制,并参数分析腹板高厚比、TNT装药质量对箱梁局部化损伤的影响。研究结果表明:接触爆炸下RC箱梁呈现典型局部化损伤模式,整体结构响应相对轻微。高强压缩波造成迎爆面的开坑、顶板贯穿孔洞及腹板的破裂,穿过腹板的压缩波在底板自由表面反射形成拉伸波导致背爆面的层裂剥落。增大腹板高厚比能够减弱反射拉伸波的强度,进而减小或避免RC箱梁背爆面层裂剥落损伤,在抗爆设计中应注意控制腹板高厚比在合理范围。线性拟合得到的局部损伤特征尺寸与高厚比、装药质量之间的关系式可为实际桥梁工程抗爆防护设计及应急抢修提供参考。 展开更多
关键词 钢筋混凝土箱梁桥 接触爆炸试验 数值模拟 损伤机理 应力波
原文传递
双阶摩擦耗能连接UHPC幕墙-RC框架抗震性能研究
6
作者 种迅 高俊 +4 位作者 沙慧玲 何利 冯晖 赵鹏 李志鹏 《建筑结构》 北大核心 2026年第3期150-158,共9页
提出一种可用于超高性能混凝土(UHPC)幕墙与主体结构间的双阶摩擦耗能连接件,该连接件由两个分别在多遇地震和设防地震下启动的摩擦阻尼器并联而成。采用数值模拟分析方法,分别对这一新型摩擦耗能连接件的受力性能以及采用这一连接件的U... 提出一种可用于超高性能混凝土(UHPC)幕墙与主体结构间的双阶摩擦耗能连接件,该连接件由两个分别在多遇地震和设防地震下启动的摩擦阻尼器并联而成。采用数值模拟分析方法,分别对这一新型摩擦耗能连接件的受力性能以及采用这一连接件的UHPC幕墙-钢筋混凝土(RC)框架结构的抗震性能和减震机理展开研究。结果表明:新型双阶摩擦耗能连接件在小位移下一阶阻尼器屈服,滞回曲线为理想矩形,较大位移时,二阶阻尼器启动,承载能力和耗能能力大幅提升,表现出理想的双阶屈服特性;采用双阶摩擦耗能连接的UHPC幕墙-RC框架结构与纯框架结构相比,在设防地震和罕遇地震下的最大层间位移角减震率分别达到了46.9%和40.8%;设置双阶摩擦耗能连接件可以控制结构薄弱层的变形,使得结构层间位移趋于均匀分布;合理的双阶耗能连接参数和布置方式可以获得较好的位移控制效果。 展开更多
关键词 双阶摩擦耗能连接 UHPC幕墙 钢筋混凝土框架 抗震性能 减震机理
在线阅读 下载PDF
CFRP布配置率对CFRP加固无腹筋RC梁纯扭转性能及尺寸效应影响
7
作者 张江兴 李冬 +1 位作者 金浏 杜修力 《工程力学》 北大核心 2026年第2期105-114,共10页
开展混凝土结构扭转尺寸效应研究,对提高结构构件抗扭承载力的安全设计具有重要意义。该文综合考虑混凝土非均质性、及其与钢筋、与CFRP布的黏结-滑移关系,建立了CFRP加固RC梁纯扭转破坏的三维细观数值分析模型,系统探究了CFRP布配置率... 开展混凝土结构扭转尺寸效应研究,对提高结构构件抗扭承载力的安全设计具有重要意义。该文综合考虑混凝土非均质性、及其与钢筋、与CFRP布的黏结-滑移关系,建立了CFRP加固RC梁纯扭转破坏的三维细观数值分析模型,系统探究了CFRP布配置率对加固RC梁纯扭转性能及尺寸效应的影响规律。研究结果表明:提高CFRP布配置率不仅能够有效提升RC梁的名义抗扭强度,还可削弱其名义抗扭强度的尺寸效应。基于数值模拟结果,提出了能够定量描述CFRP布配置率对RC梁名义抗扭强度尺寸效应影响的纯扭转尺寸效应律。 展开更多
关键词 CFRP加固rc 扭转破坏 CFRP布配置率 尺寸效应 细观模拟
在线阅读 下载PDF
RC箱型结构内爆炸载荷特性和动力行为分析
8
作者 李军润 卢永刚 +1 位作者 冯晓伟 吴昊 《爆炸与冲击》 北大核心 2026年第1期131-151,共21页
爆炸冲击波在钢筋混凝土(reinforced concrete,RC)箱型结构中难以向外自由扩散,经多次反射叠加后可加剧结构的破坏。为全面探究RC箱型结构内爆炸载荷特性及其动力行为特征,通过复现完全密闭和半密闭(带泄爆口)RC箱型结构的内爆炸试验,... 爆炸冲击波在钢筋混凝土(reinforced concrete,RC)箱型结构中难以向外自由扩散,经多次反射叠加后可加剧结构的破坏。为全面探究RC箱型结构内爆炸载荷特性及其动力行为特征,通过复现完全密闭和半密闭(带泄爆口)RC箱型结构的内爆炸试验,验证了所采用有限元建模和分析方法的适用性。进一步,针对典型RC箱型结构和美国联邦应急管理署规定的爆炸恐怖袭击类型,开展了3种爆炸威胁和4种泄爆面积下的内爆炸数值模拟分析,考察了结构内壁面中心和内角隅处的载荷及其分布以及结构的动力行为特征。结果表明:泄爆面积对各特征点爆炸波峰值超压的影响较小,而爆炸波冲量随泄爆面积的增大近似呈指数形式降低;结构内壁面的载荷分布受结构尺寸的影响显著,呈内凹或W形;当泄爆系数从0.457增大至1.220时,墙板最大位移可降低50%以上;相较于超压准则,冲量准则可以更准确地评估构件毁伤等级。最后,提出了考虑泄爆面积的冲量增强因子和毁伤增强因子计算方法,能够较好地预测不同泄爆系数下的内爆炸载荷和结构动力行为。 展开更多
关键词 内爆炸 rc箱型结构 载荷特性 动力行为
在线阅读 下载PDF
DDPG-Based Intelligent Computation Offloading and Resource Allocation for LEO Satellite Edge Computing Network 被引量:1
9
作者 Jia Min Wu Jian +2 位作者 Zhang Liang Wang Xinyu Guo Qing 《China Communications》 2025年第3期1-15,共15页
Low earth orbit(LEO)satellites with wide coverage can carry the mobile edge computing(MEC)servers with powerful computing capabilities to form the LEO satellite edge computing system,providing computing services for t... Low earth orbit(LEO)satellites with wide coverage can carry the mobile edge computing(MEC)servers with powerful computing capabilities to form the LEO satellite edge computing system,providing computing services for the global ground users.In this paper,the computation offloading problem and resource allocation problem are formulated as a mixed integer nonlinear program(MINLP)problem.This paper proposes a computation offloading algorithm based on deep deterministic policy gradient(DDPG)to obtain the user offloading decisions and user uplink transmission power.This paper uses the convex optimization algorithm based on Lagrange multiplier method to obtain the optimal MEC server resource allocation scheme.In addition,the expression of suboptimal user local CPU cycles is derived by relaxation method.Simulation results show that the proposed algorithm can achieve excellent convergence effect,and the proposed algorithm significantly reduces the system utility values at considerable time cost compared with other algorithms. 展开更多
关键词 computation offloading deep deterministic policy gradient low earth orbit satellite mobile edge computing resource allocation
在线阅读 下载PDF
新型装配式钢管混凝土柱-预制RC横系板格构式高墩静力推覆性能研究
10
作者 焦佳楠 王宣鼎 +4 位作者 乔云强 陈晓虎 刘永健 刘源 周绪红 《建筑钢结构进展》 北大核心 2026年第2期1-9,共9页
本文提出了一种新型装配式钢管混凝土(CFST)桥墩体系,采用间断预制钢筋混凝土(RC)横系板连接,抗侧刚度大,施工效率高。基于ABAQUS软件,建立该新型桥墩体系的精细化有限元模型,并开展参数分析,考察板间距、板高、板分布等对体系静力推覆... 本文提出了一种新型装配式钢管混凝土(CFST)桥墩体系,采用间断预制钢筋混凝土(RC)横系板连接,抗侧刚度大,施工效率高。基于ABAQUS软件,建立该新型桥墩体系的精细化有限元模型,并开展参数分析,考察板间距、板高、板分布等对体系静力推覆性能与损伤模式的影响规律;基于有限元分析,提出该桥墩体系的概念设计建议。研究结果表明:该桥墩体系具有较高的抗侧刚度、承载力与较好的延性,新型装配式CFST柱-预制RC横系板的连接节点能保证体系的高效传力与充分变形,合理设计预制RC横系板的高度与间距可改变体系的塑性发展机制,以满足不同性能化设计的需要。 展开更多
关键词 格构式CFST桥墩 预制rc横系板 装配式节点 静力推覆性能 精细化有限元模型 参数分析
原文传递
Dynamic Task Offloading Scheme for Edge Computing via Meta-Reinforcement Learning 被引量:1
11
作者 Jiajia Liu Peng Xie +2 位作者 Wei Li Bo Tang Jianhua Liu 《Computers, Materials & Continua》 2025年第2期2609-2635,共27页
As an important complement to cloud computing, edge computing can effectively reduce the workload of the backbone network. To reduce latency and energy consumption of edge computing, deep learning is used to learn the... As an important complement to cloud computing, edge computing can effectively reduce the workload of the backbone network. To reduce latency and energy consumption of edge computing, deep learning is used to learn the task offloading strategies by interacting with the entities. In actual application scenarios, users of edge computing are always changing dynamically. However, the existing task offloading strategies cannot be applied to such dynamic scenarios. To solve this problem, we propose a novel dynamic task offloading framework for distributed edge computing, leveraging the potential of meta-reinforcement learning (MRL). Our approach formulates a multi-objective optimization problem aimed at minimizing both delay and energy consumption. We model the task offloading strategy using a directed acyclic graph (DAG). Furthermore, we propose a distributed edge computing adaptive task offloading algorithm rooted in MRL. This algorithm integrates multiple Markov decision processes (MDP) with a sequence-to-sequence (seq2seq) network, enabling it to learn and adapt task offloading strategies responsively across diverse network environments. To achieve joint optimization of delay and energy consumption, we incorporate the non-dominated sorting genetic algorithm II (NSGA-II) into our framework. Simulation results demonstrate the superiority of our proposed solution, achieving a 21% reduction in time delay and a 19% decrease in energy consumption compared to alternative task offloading schemes. Moreover, our scheme exhibits remarkable adaptability, responding swiftly to changes in various network environments. 展开更多
关键词 Edge computing adaptive META task offloading joint optimization
在线阅读 下载PDF
Near‑Sensor Edge Computing System Enabled by a CMOS Compatible Photonic Integrated Circuit Platform Using Bilayer AlN/Si Waveguides 被引量:1
12
作者 Zhihao Ren Zixuan Zhang +4 位作者 Yangyang Zhuge Zian Xiao Siyu Xu Jingkai Zhou Chengkuo Lee 《Nano-Micro Letters》 2025年第11期1-20,共20页
The rise of large-scale artificial intelligence(AI)models,such as ChatGPT,Deep-Seek,and autonomous vehicle systems,has significantly advanced the boundaries of AI,enabling highly complex tasks in natural language proc... The rise of large-scale artificial intelligence(AI)models,such as ChatGPT,Deep-Seek,and autonomous vehicle systems,has significantly advanced the boundaries of AI,enabling highly complex tasks in natural language processing,image recognition,and real-time decisionmaking.However,these models demand immense computational power and are often centralized,relying on cloud-based architectures with inherent limitations in latency,privacy,and energy efficiency.To address these challenges and bring AI closer to real-world applications,such as wearable health monitoring,robotics,and immersive virtual environments,innovative hardware solutions are urgently needed.This work introduces a near-sensor edge computing(NSEC)system,built on a bilayer AlN/Si waveguide platform,to provide real-time,energy-efficient AI capabilities at the edge.Leveraging the electro-optic properties of AlN microring resonators for photonic feature extraction,coupled with Si-based thermo-optic Mach-Zehnder interferometers for neural network computations,the system represents a transformative approach to AI hardware design.Demonstrated through multimodal gesture and gait analysis,the NSEC system achieves high classification accuracies of 96.77%for gestures and 98.31%for gaits,ultra-low latency(<10 ns),and minimal energy consumption(<0.34 pJ).This groundbreaking system bridges the gap between AI models and real-world applications,enabling efficient,privacy-preserving AI solutions for healthcare,robotics,and next-generation human-machine interfaces,marking a pivotal advancement in edge computing and AI deployment. 展开更多
关键词 Photonic integrated circuits Edge computing Aluminum nitride Neural networks Wearable sensors
在线阅读 下载PDF
CBBM-WARM:A Workload-Aware Meta-Heuristic for Resource Management in Cloud Computing 被引量:1
13
作者 K Nivitha P Pabitha R Praveen 《China Communications》 2025年第6期255-275,共21页
The rapid advent in artificial intelligence and big data has revolutionized the dynamic requirement in the demands of the computing resource for executing specific tasks in the cloud environment.The process of achievi... The rapid advent in artificial intelligence and big data has revolutionized the dynamic requirement in the demands of the computing resource for executing specific tasks in the cloud environment.The process of achieving autonomic resource management is identified to be a herculean task due to its huge distributed and heterogeneous environment.Moreover,the cloud network needs to provide autonomic resource management and deliver potential services to the clients by complying with the requirements of Quality-of-Service(QoS)without impacting the Service Level Agreements(SLAs).However,the existing autonomic cloud resource managing frameworks are not capable in handling the resources of the cloud with its dynamic requirements.In this paper,Coot Bird Behavior Model-based Workload Aware Autonomic Resource Management Scheme(CBBM-WARMS)is proposed for handling the dynamic requirements of cloud resources through the estimation of workload that need to be policed by the cloud environment.This CBBM-WARMS initially adopted the algorithm of adaptive density peak clustering for workloads clustering of the cloud.Then,it utilized the fuzzy logic during the process of workload scheduling for achieving the determining the availability of cloud resources.It further used CBBM for potential Virtual Machine(VM)deployment that attributes towards the provision of optimal resources.It is proposed with the capability of achieving optimal QoS with minimized time,energy consumption,SLA cost and SLA violation.The experimental validation of the proposed CBBMWARMS confirms minimized SLA cost of 19.21%and reduced SLA violation rate of 18.74%,better than the compared autonomic cloud resource managing frameworks. 展开更多
关键词 autonomic resource management cloud computing coot bird behavior model SLA violation cost WORKLOAD
在线阅读 下载PDF
Providing Robust and Low-Cost Edge Computing in Smart Grid:An Energy Harvesting Based Task Scheduling and Resource Management Framework 被引量:1
14
作者 Xie Zhigang Song Xin +1 位作者 Xu Siyang Cao Jing 《China Communications》 2025年第2期226-240,共15页
Recently,one of the main challenges facing the smart grid is insufficient computing resources and intermittent energy supply for various distributed components(such as monitoring systems for renewable energy power sta... Recently,one of the main challenges facing the smart grid is insufficient computing resources and intermittent energy supply for various distributed components(such as monitoring systems for renewable energy power stations).To solve the problem,we propose an energy harvesting based task scheduling and resource management framework to provide robust and low-cost edge computing services for smart grid.First,we formulate an energy consumption minimization problem with regard to task offloading,time switching,and resource allocation for mobile devices,which can be decoupled and transformed into a typical knapsack problem.Then,solutions are derived by two different algorithms.Furthermore,we deploy renewable energy and energy storage units at edge servers to tackle intermittency and instability problems.Finally,we design an energy management algorithm based on sampling average approximation for edge computing servers to derive the optimal charging/discharging strategies,number of energy storage units,and renewable energy utilization.The simulation results show the efficiency and superiority of our proposed framework. 展开更多
关键词 edge computing energy harvesting energy storage unit renewable energy sampling average approximation task scheduling
在线阅读 下载PDF
A Comprehensive Study of Resource Provisioning and Optimization in Edge Computing
15
作者 Sreebha Bhaskaran Supriya Muthuraman 《Computers, Materials & Continua》 2025年第6期5037-5070,共34页
Efficient resource provisioning,allocation,and computation offloading are critical to realizing lowlatency,scalable,and energy-efficient applications in cloud,fog,and edge computing.Despite its importance,integrating ... Efficient resource provisioning,allocation,and computation offloading are critical to realizing lowlatency,scalable,and energy-efficient applications in cloud,fog,and edge computing.Despite its importance,integrating Software Defined Networks(SDN)for enhancing resource orchestration,task scheduling,and traffic management remains a relatively underexplored area with significant innovation potential.This paper provides a comprehensive review of existing mechanisms,categorizing resource provisioning approaches into static,dynamic,and user-centric models,while examining applications across domains such as IoT,healthcare,and autonomous systems.The survey highlights challenges such as scalability,interoperability,and security in managing dynamic and heterogeneous infrastructures.This exclusive research evaluates how SDN enables adaptive policy-based handling of distributed resources through advanced orchestration processes.Furthermore,proposes future directions,including AI-driven optimization techniques and hybrid orchestrationmodels.By addressing these emerging opportunities,thiswork serves as a foundational reference for advancing resource management strategies in next-generation cloud,fog,and edge computing ecosystems.This survey concludes that SDN-enabled computing environments find essential guidance in addressing upcoming management opportunities. 展开更多
关键词 Cloud computing edge computing fog computing resource provisioning resource allocation computation offloading optimization techniques software defined network
在线阅读 下载PDF
RC3H1基因突变致家族性噬血细胞综合征1例
16
作者 井发红 杨楠 +2 位作者 王科勇 陈婕 李卓 《临床检验杂志》 2026年第1期71-73,共3页
噬血细胞综合征(hemophagocytic syndrome,HPS)又称为噬血细胞性淋巴组织细胞增多症(hemophagocytic lymphohistiocytosis,HLH),是一种由多种诱因所致的免疫介导性高炎症状态,其核心病理机制在于细胞毒性T细胞、自然杀伤(NK)细胞及巨噬... 噬血细胞综合征(hemophagocytic syndrome,HPS)又称为噬血细胞性淋巴组织细胞增多症(hemophagocytic lymphohistiocytosis,HLH),是一种由多种诱因所致的免疫介导性高炎症状态,其核心病理机制在于细胞毒性T细胞、自然杀伤(NK)细胞及巨噬细胞的异常活化与增殖失控。 展开更多
关键词 噬血细胞综合征 rc3H1基因 基因突变
暂未订购
Quantum Inspired Adaptive Resource Management Algorithm for Scalable and Energy Efficient Fog Computing in Internet of Things(IoT)
17
作者 Sonia Khan Naqash Younas +3 位作者 Musaed Alhussein Wahib Jamal Khan Muhammad Shahid Anwar Khursheed Aurangzeb 《Computer Modeling in Engineering & Sciences》 2025年第3期2641-2660,共20页
Effective resource management in the Internet of Things and fog computing is essential for efficient and scalable networks.However,existing methods often fail in dynamic and high-demand environments,leading to resourc... Effective resource management in the Internet of Things and fog computing is essential for efficient and scalable networks.However,existing methods often fail in dynamic and high-demand environments,leading to resource bottlenecks and increased energy consumption.This study aims to address these limitations by proposing the Quantum Inspired Adaptive Resource Management(QIARM)model,which introduces novel algorithms inspired by quantum principles for enhanced resource allocation.QIARM employs a quantum superposition-inspired technique for multi-state resource representation and an adaptive learning component to adjust resources in real time dynamically.In addition,an energy-aware scheduling module minimizes power consumption by selecting optimal configurations based on energy metrics.The simulation was carried out in a 360-minute environment with eight distinct scenarios.This study introduces a novel quantum-inspired resource management framework that achieves up to 98%task offload success and reduces energy consumption by 20%,addressing critical challenges of scalability and efficiency in dynamic fog computing environments. 展开更多
关键词 Quantum computing resource management energy efficiency fog computing Internet of Things
在线阅读 下载PDF
基于机器学习的爆炸荷载下RC板最大位移响应分析
18
作者 于晓辉 陈玉琛 代旷宇 《建筑科学与工程学报》 北大核心 2026年第1期85-94,共10页
收集既有试验及数值模拟结果,建立了包含491种钢筋混凝土(RC)板在爆炸荷载作用下的位移响应数据库。采用板的长度、宽度、厚度、混凝土抗压强度、钢筋屈服强度、配筋率、边界条件、板的类型、爆炸距离和爆炸当量10个影响因素作为输入参... 收集既有试验及数值模拟结果,建立了包含491种钢筋混凝土(RC)板在爆炸荷载作用下的位移响应数据库。采用板的长度、宽度、厚度、混凝土抗压强度、钢筋屈服强度、配筋率、边界条件、板的类型、爆炸距离和爆炸当量10个影响因素作为输入参数,采用3类共9种机器学习方法,分别建立了RC板在爆炸荷载下最大位移响应预测模型。采用可解释性机器学习方法,通过特征重要性分析、单因素部分依赖分析及交互性依赖分析,对所建立的机器学习模型进行解释,并对RC板在爆炸荷载下最大位移响应的影响因素的重要性进行了分析。结果表明:基于粒子群优化-极端梯度增强方法(PSO-XGBoost)的预测模型精度最高,且精度高于规范推荐的等效单自由度模型结果;在所考虑的影响因素中,爆炸当量、爆炸距离、板的厚度及配筋率对RC板在爆炸荷载作用下的最大位移响应影响最显著;RC板的抗爆设计应保证最小板厚达到150 mm,最小配筋率达到1.5%,且混凝土强度应达到50 MPa。 展开更多
关键词 rc 爆炸荷载 最大位移响应 可解释性机器学习 PSO-XGBoost方法
在线阅读 下载PDF
Priority-Based Scheduling and Orchestration in Edge-Cloud Computing:A Deep Reinforcement Learning-Enhanced Concurrency Control Approach
19
作者 Mohammad A Al Khaldy Ahmad Nabot +4 位作者 Ahmad Al-Qerem Mohammad Alauthman Amina Salhi Suhaila Abuowaida Naceur Chihaoui 《Computer Modeling in Engineering & Sciences》 2025年第10期673-697,共25页
The exponential growth of Internet of Things(IoT)devices has created unprecedented challenges in data processing and resource management for time-critical applications.Traditional cloud computing paradigms cannot meet... The exponential growth of Internet of Things(IoT)devices has created unprecedented challenges in data processing and resource management for time-critical applications.Traditional cloud computing paradigms cannot meet the stringent latency requirements of modern IoT systems,while pure edge computing faces resource constraints that limit processing capabilities.This paper addresses these challenges by proposing a novel Deep Reinforcement Learning(DRL)-enhanced priority-based scheduling framework for hybrid edge-cloud computing environments.Our approach integrates adaptive priority assignment with a two-level concurrency control protocol that ensures both optimal performance and data consistency.The framework introduces three key innovations:(1)a DRL-based dynamic priority assignmentmechanism that learns fromsystem behavior,(2)a hybrid concurrency control protocol combining local edge validation with global cloud coordination,and(3)an integrated mathematical model that formalizes sensor-driven transactions across edge-cloud architectures.Extensive simulations across diverse workload scenarios demonstrate significant quantitative improvements:40%latency reduction,25%throughput increase,85%resource utilization(compared to 60%for heuristicmethods),40%reduction in energy consumption(300 vs.500 J per task),and 50%improvement in scalability factor(1.8 vs.1.2 for EDF)compared to state-of-the-art heuristic and meta-heuristic approaches.These results establish the framework as a robust solution for large-scale IoT and autonomous applications requiring real-time processing with consistency guarantees. 展开更多
关键词 Edge computing cloud computing scheduling algorithms orchestration strategies deep reinforcement learning concurrency control real-time systems IoT
在线阅读 下载PDF
Computational Offloading and Resource Allocation for Internet of Vehicles Based on UAV-Assisted Mobile Edge Computing System
20
作者 Fang Yujie Li Meng +3 位作者 Si Pengbo Yang Ruizhe Sun Enchang Zhang Yanhua 《China Communications》 2025年第9期333-351,共19页
As an essential element of intelligent trans-port systems,Internet of vehicles(IoV)has brought an immersive user experience recently.Meanwhile,the emergence of mobile edge computing(MEC)has enhanced the computational ... As an essential element of intelligent trans-port systems,Internet of vehicles(IoV)has brought an immersive user experience recently.Meanwhile,the emergence of mobile edge computing(MEC)has enhanced the computational capability of the vehicle which reduces task processing latency and power con-sumption effectively and meets the quality of service requirements of vehicle users.However,there are still some problems in the MEC-assisted IoV system such as poor connectivity and high cost.Unmanned aerial vehicles(UAVs)equipped with MEC servers have become a promising approach for providing com-munication and computing services to mobile vehi-cles.Hence,in this article,an optimal framework for the UAV-assisted MEC system for IoV to minimize the average system cost is presented.Through joint consideration of computational offloading decisions and computational resource allocation,the optimiza-tion problem of our proposed architecture is presented to reduce system energy consumption and delay.For purpose of tackling this issue,the original non-convex issue is converted into a convex issue and the alternat-ing direction method of multipliers-based distributed optimal scheme is developed.The simulation results illustrate that the presented scheme can enhance the system performance dramatically with regard to other schemes,and the convergence of the proposed scheme is also significant. 展开更多
关键词 computational offloading Internet of Vehicles mobile edge computing resource optimization unmanned aerial vehicle
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部