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QoS Routing Optimization Based on Deep Reinforcement Learning in SDN

Computers, Materials & Continua 2024年第5期79卷 3007-3021页

作者： Yu Song Xusheng Qian Nan Zhang Wei Wang ao xiong State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing100876China Marketing Service Center State Grid Jiangsu Electric Power Co.Ltd.Nanjing220000China Customer Service Center State Grid Co.Ltd.Nanjing211161China

To enhance the efficiency and expediency of issuing e-licenses within the power sector, we must confront thechallenge of managing the surging demand for data traffic. Within this realm, the network imposes stringentQuality of Service (QoS) requirements, revealing the inadequacies of traditional routing allocation mechanismsin accommodating such extensive data flows. In response to the imperative of handling a substantial influx of datarequests promptly and alleviating the constraints of existing technologies and network congestion, we present anarchitecture forQoS routing optimizationwith in SoftwareDefinedNetwork (SDN), leveraging deep reinforcementlearning. This innovative approach entails the separation of SDN control and transmission functionalities, centralizingcontrol over data forwardingwhile integrating deep reinforcement learning for informed routing decisions. Byfactoring in considerations such as delay, bandwidth, jitter rate, and packet loss rate, we design a reward function toguide theDeepDeterministic PolicyGradient (DDPG) algorithmin learning the optimal routing strategy to furnishsuperior QoS provision. In our empirical investigations, we juxtapose the performance of Deep ReinforcementLearning (DRL) against that of Shortest Path (SP) algorithms in terms of data packet transmission delay. Theexperimental simulation results show that our proposed algorithm has significant efficacy in reducing networkdelay and improving the overall transmission efficiency, which is superior to the traditional methods.

关键词： Deep reinforcement learning SDN route optimization QoS

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WiFi Indoor Positioning and Tracking Algorithm Based on Compressive Sensing and Sage-Husa Adaptive Kalman Filter

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Open Journal of Applied Sciences 2024年第2期14卷 379-390页

作者： Yingjie Sun Yi Zhong Congwei Hu ao xiong Hu Zhao College of Railway Transportation Hunan University of Technology Zhuzhou China Jiangsu Shengtong Electric New Energy Technology Co. Ltd. Changsha China Huazi Technology Co. Ltd. Changsha China

Aiming at the problem that the positioning accuracy of WiFi indoor positioning technology based on location fingerprint has not reached the requirements of practical application, a WiFi indoor positioning and tracking algorithm combining adaptive affine propagation (AAPC), compressed sensing (CS) and Kalman filter is proposed. In the off-line phase, AAPC algorithm is used to generate clustering fingerprints with optimal clustering effect performance;In the online phase, CS and nearest neighbor algorithm are used for position estimation;Finally, the Kalman filter and physical constraints are combined to perform positioning and tracking. By collecting a large number of real experimental data, it is proved that the developed algorithm has higher positioning accuracy and more accurate trajectory tracking effect.

关键词： WiFi Indoor Positioning Cluster Signal Recovery Trajectory Tracking

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基于遗传算法的脱模机转动系统最优控制器设计

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机械 2024年第1期51卷 67-73页

作者：熊澳王琦武汉工程大学机电工程学院湖北武汉430000

混凝土试块脱模机是一款全自动化实验设备,其中脱模机的转动控制系统是设备运行的重要组成部分。为提高脱模机转动系统的角度控制能力,本文基于最优控制理论设计了一种脱模机转动控制器,并通过仿真实验验证了其有效性。结果显示,在2 s... 详细信息

混凝土试块脱模机是一款全自动化实验设备,其中脱模机的转动控制系统是设备运行的重要组成部分。为提高脱模机转动系统的角度控制能力,本文基于最优控制理论设计了一种脱模机转动控制器,并通过仿真实验验证了其有效性。结果显示,在2 s的时间内系统可以达到稳定状态。然而,应用此方法主要取决于Q、R加权矩阵的选择,通常需要反复试验才能获得满意的结果。为解决此问题,本文采用遗传算法来优化加权系数。通过实验仿真,成功将系统稳定时间缩短了1 s,达到了更快的稳定效果。研究结果表明,采用基于最优控制理论的脱模机转动控制器,结合遗传算法进行优化,可以有效提高脱模机转动系统的角度控制能力,缩短稳定时间,提高设备运行效率。

关键词：脱模机转动系统遗传算法最优控制角度控制

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小肠过表达Ski蛋白对扭体小鼠的抑炎镇痛作用

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中国实验动物学报 2024年第3期32卷 369-377页

作者：熊翱魏小雨彭艳杨明杨钱冬罗飞陆军军医大学(第三军医大学)第一附属医院骨科重庆400038 陆军军医大学陆军特色医学中心野战外科研究部重庆400042

目的研究小肠过表达鸟类癌基因(virus sloan-kettering institute, v-ski)的细胞内同源物(Ski)蛋白对醋酸致扭体小鼠的抑炎镇痛作用。方法选取8周龄雄性ICR小鼠,给予腹腔注射现配的0.7%醋酸溶液(0.1 mL/10 g)诱发扭体反应。实验小鼠... 详细信息

目的研究小肠过表达鸟类癌基因(virus sloan-kettering institute, v-ski)的细胞内同源物(Ski)蛋白对醋酸致扭体小鼠的抑炎镇痛作用。方法选取8周龄雄性ICR小鼠,给予腹腔注射现配的0.7%醋酸溶液(0.1 mL/10 g)诱发扭体反应。实验小鼠分为假手术(sham)组、醋酸(acetic acid)组、醋酸(acetic acid)+布洛芬(ibuprofen)组、醋酸(acetic acid)+腺病毒空质粒(ad-EGFP)组、醋酸(acetic acid)+腺病毒ski质粒(ad-ski)-1组、醋酸(acetic acid)+腺病毒ski质粒(ad-ski)-2组和醋酸(acetic acid)+柳氮磺胺吡啶(sulfasalazine)组,每组10只。观察并记录第1次扭体出现的潜伏期,同时记录15 min内的扭体次数。获取标记的小肠组织,鉴定腺病毒转染效果,检测促炎因子、疼痛生物标志物的蛋白表达量,进一步分析核转录因子-κB(NF-κB)通路蛋白表达及其与Ski蛋白的结合情况。结果腹腔注射ad-ski腺病毒后,小肠成功过表达Ski蛋白。过表达的Ski蛋白延长了小鼠发生扭体的潜伏期,同时减少了扭体反应的频率,与布洛芬的效果相当(P>0.05)。与醋酸组比较,过表达的Ski蛋白显著抑制了促炎因子和疼痛生物标志物的蛋白表达(P<0.05)。而且NF-κB p65与Ski有复合物形成。结论过表达Ski蛋白对醋酸引起的炎性疼痛有抑炎镇痛作用,且与Ski调节NF-κB信号通路有关。

关键词： Ski 扭体实验白细胞介素-1β 肿瘤坏死因子-α 神经生长因子酪氨酸蛋白激酶A 小鼠

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红色文化在装饰画设计与制作中的应用

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鞋类工艺与设计 2024年第8期4卷 108-110页

作者：李君乾蔡仰风熊奡江西服装学院江西南昌330000

红色文化是我国社会发展中不可缺少的一部分,既体现了我国过去的发展历史,同样也是社会群体的共同记忆。为更好地传承红色文化,可以将其应用到装饰画设计与制作过程中。本文首先分析了红色文化在装饰画中的应用价值和应用原则,然后将红... 详细信息

红色文化是我国社会发展中不可缺少的一部分,既体现了我国过去的发展历史,同样也是社会群体的共同记忆。为更好地传承红色文化,可以将其应用到装饰画设计与制作过程中。本文首先分析了红色文化在装饰画中的应用价值和应用原则,然后将红色文化与现实生活进行有效地联系,融入装饰画设计与制作中,以期能够达到传承红色文化的目的。

关键词：红色文化装饰画设计制作文化传承

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Physical-Rheological Properties and Performances of Rejuvenated(Styrene-Butadiene-Styrene)Asphalt with Polymerized-MDI and Aromatic Oil

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Fluid Dynamics & Materials Processing 2024年第7期20卷 1633-1646页

作者： ao Lu Ming xiong Chen Chen Liangjiang Li Haibei Tan xiong Xu Hubei Regional Management Headquarters CCCC Asset Management Co.Ltd.Beijing101399China School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhan430073China Hubei Provincial Engineering Research Center for Green Civil Engineering Materials and Structures Wuhan Institute of TechnologyWuhan430073China

Traditional asphalt rejuvenators,like aromatic oil(ao),are known to be effective in improving the low-temperature properties and fatigue performances of aged SBS(styrene-butadiene-styrene)modified asphalt(SBSMA)binders and ***,these rejuvenators inevitably compromise their high-temperature properties and deformation resistances because they dilute asphalt binder but do not fix the damaged structures of aged *** this study,a highly-active chemical called polymerized 4,4-diphenylmethane diisocyanate(PMDI)was used to assist the traditional ao asphalt *** physical and rheological characteristics of rejuvenated SBSMA binders and the moisture-induced damage and rut deformation performances of corresponding mixtures were comparatively *** results showed that the increasing proportion of ao compromises the hightemperature property and hardness of aged SBSMA binder,and an appropriate amount of PMDI works to compensate such losses;3%rejuvenator at mass ratio of ao:PMDI=70:30 can have a rejuvenated SBSMA binder with a high-temperature performance similar to that of fresh binder,approximately at 71.4°C;the use of ao can help reduce the viscosity of PMDI rejuvenated SBSMA binder for improving its workability;PMDI can help improve the resistance of ao rejuvenated SBSMA binder to deformation,especially at elevated temperatures,through its chemical reactions with aged SBS;moisture induction can enhance the resistance to damage of rejuvenated mixtures containing ao/PMDI or only PMDI;and the rejuvenator with a mass ratio of ao:PMDI=70:30 can lead the rejuvenated mixture to meet the application requirement,with a rut depth of only 2.973 mm,although more PMDI can result in a higher resistance of rejuvenated mixtures to high-temperature deformation.

关键词： Aged SBS modified asphalt polymerized 4,4-diphenylmethane diisocyanate aromatic oil physical properties rheological properties mixture performance

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Performance Characterization of CR/PU Asphalt for Potential Application in Assembled Fast-Repairing Engineering

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Fluid Dynamics & Materials Processing 2024年第5期20卷 1063-1074页

作者： Hong Pang ao Lu Ming xiong Chen Chen Xian Cao xiong Xu Jing Wang Hubei Regional Management Headquarters CCCC Asset Management Co.Ltd.Beijing101399China School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhan430073China Hubei Provincial Engineering Research Center for Green Civil Engineering Materials and Structures Wuhan Institute of TechnologyWuhan430073China

Conventional repairing methods for asphalt pavement have some inconveniences,such as insufficient strength,and are typically *** address these issues,this study proposes a new technological method to design and prepare a high-performance assembled asphalt concrete block for fast repair of the potholes.A series of composite modified asphalt binders with 10%crumb rubber(CR)and different dosages(0%,1%,3%,5%)of polyurethane(PU)are examined to determine the optimized ***,the corresponding asphalt mixtures are prepared for further comparison and assessment of engineering properties,such as moistureinduced damage,high-temperature deformation,and low-temperature cracking *** test results show that PU can significantly improve the high-temperature performance and hardness of(crumb rubber modified asphalt)CRMA binder;3%PU contributes allowing the resistance of CRMA mixture to moisture-induced damage at higher levels,particularly under water whole immersion;as 3%PU is added,the high-temperature rutting deformation resistance of the CRMA mixture increases significantly,and the low-temperature anti-cracking properties are also improved ***,the innovatively designed high-quality assembled fast-repairing asphalt concrete block is recommended as an appropriate option for highway maintenance.

关键词： Composite modified asphalt crumb rubber polyurethane assembled fast-repairing asphalt concrete maintenance engineering

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Effects of dynamic flow rates on degradation deposition behavior of Mg scaffold

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镁合金学报(英文) 2023年第6期11卷 2054-2060页

作者： Gaozhi Jia Meng Zhou Yicong Huang Chenxin Chen Liang Jin Qian Wu Jian Weng Fei Yu ao xiong Guangyin Yuan Frank Feyerabend Hui Zeng Department of Bone&Joint Surgery Peking University Shenzhen HospitalShenzhen Peking University-The Hong Kong University of Science and Technology Medical CenterShenzhen Institute of Information TechnologyShenzhen 518036China National Engineering Research Center of Light Alloy Net Forming&State Key Laboratory of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials Beijing Aircraft Technology Research Institute of COMACBeijing 102211China College of Life Science Zhejiang Chinese Medical UniversityHangzhou 310053China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Department of Orthopaedics Peking University People’s HospitalBeijing 100044China Division of Metallic Biomaterials Institute of Materials ResearchHelmholtz-Zentrum HereonGeesthacht 21502Germany National&Local Joint Engineering Research Center of Orthopaedic Biomaterials Peking University Shenzhen HospitalShenzhen 518036China

Degradability of bone tissue engineering scaffold that matching the regeneration rate could allow a complete replacement of host ***,the porous structure of biodegradable Mg scaffolds certainly generated high specific surface area,and the three-dimensional interconnected pores provided fast pervasive invasion entrance for the corrosive medium,rising concern of the structural integrity during the *** clarify the structural evolution of the three-dimensional(3D)porous structure,semi-static immersion tests were carried out to evaluate the degradation performance in our previous ***,dynamic immersion tests mimicking the in vivo circulatory fluid through the interconnected porous structure have yet been ***,the effects of dynamic flow rates on the degradation deposition behavior of 3D porous Mg scaffolds were rarely *** this study,Mg scaffolds degraded at three flow rates exhibited different degradation rates and deposition process.A flow rate of 0.5 m L/min introduced maximum drop of porosity by accumulated deposition *** deposition products provided limited protection against the degradation process at a flow rate of 1.0 m L/*** three-dimensional interconnected porous structure of Mg scaffold degraded at 2.0 m L/min well retained after 14 days showing the best interconnectivity resistance to the degradation deposition *** dynamic immersion tests disclosed the reason for the different degradation rates on account of flow rates,which may bring insight into understanding of varied in vivo degradation rates related to implantation sites.

关键词： Porous Mg scaffold Degradability Porosity Dynamic immersion test Degradation rate

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Cladophora as ecological engineer:A new test from the largest lake of Qinghai-Tibet plateau with filamentous algal blooms

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Water Biology and Security 2024年第1期3卷 46-52页

作者： Zhihua Wu Xigong Yuan xiong xiong Hongyi ao Chenxi Wu Guoxiang Liu Huan Zhu Institute of Hydrobiology Chinese Academy of SciencesWuhan430072China College of Science Tibet UniversityLhasa850001China Huaihe River Commission of the Ministry of Water Resources Bengbu233001China

Filamentous algae blooms(FABs)have been increasing globally in recent years,and their presence can have both harmful and beneficial effects on aquatic *** one of the most common FABs,Cladophora blooms have been reported in the lakes of the Qinghai-Tibet Plateau during the past few ***,there have been few studies focused on how FABs impact other aquatic organisms,especially in alpine lakes since these are at the forefront of responding to global climate *** this study,the phytoplankton communities in different regions of Qinghai Lake were profiled in different seasons using meta-barcode *** phytoplankton assemblages in areas with Cladophora blooms were compared to those without *** phytoplankton community structure correlated with physicochemical properties including water temperature,electrical conductivity,nitrate,and the presence or absence of Cladophora *** relative abundance of Bacillariophytes was found to be higher in zones with Cladophora blooms than in other *** seasonal changes in phytoplankton biomass andβdiversity were observed in zones with Cladophora *** and microbial degradation of Cladophora can change the pH,dissolved oxygen,secchi depth,and *** with seasonal temperature and electrical conductivity changes,Cladophora growth can significantly impact the phytoplankton biomass,community dissimilarity and assembly *** results showed that Cladophora plays a key role in littoral aquatic ecosystem ecology.

关键词： Filamentous algal blooms Qinghai lake Biodiversity Phytoplankton community Assembly processes Environmental drivers

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Blockchain-Based Reliable Fog-Cloud Service Solution for IIoT

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Chinese Journal of Electronics 2021年第2期30卷 359-366页

作者： DAI Meiling XU Siya SHao Sujie GUO Shaoyong QIU Xuesong xiong ao State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Industrial Internet of things(IIoT) deploys a large number of smart devices to obtain industrial data, which will be transmitted to cloud for analysis to improve industrial productivity. The management of large-scale devices is complicated, and it's also a challenge to choose a high-quality cloud service for data analysis as the number of service with similar functions increases. To address these issues, we propose a reliable fog-cloud service solution with blockchain-based fog-cloud architecture. In fog layer, we build a management blockchain between fog servers and design a management method for industrial devices; In cloud layer, we construct a service blockchain between cloud service providers to form an open "service market". Quality of service and reputation based matching algorithm and reputation-based consensus algorithm are designed. The simulation results show correctness and efficiency of algorithms, and validate effectiveness of our proposed solution.

关键词： Data security Information networks Internet software Blockchain Fog-cloud architecture Reputation Cloud service matching Industrial internet of things

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