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云计算环境下数据通信的智能路由算法研究

通信电源技术 2024年第5期41卷 176-178页

作者：张光艳北京市委党校(北京行政学院) 北京100044

文章以深度强化学习模型为核心,研究了云计算环境下的数据通信智能路由算法。通过状态空间建模、动作空间定义、奖励机制及深度强化学习算法的综合应用,实现了对系统性能多方面的综合优化。在对比实验中,将该智能路由算法与传统路由协... 详细信息

文章以深度强化学习模型为核心,研究了云计算环境下的数据通信智能路由算法。通过状态空间建模、动作空间定义、奖励机制及深度强化学习算法的综合应用,实现了对系统性能多方面的综合优化。在对比实验中,将该智能路由算法与传统路由协议进行了全面对比,验证了其在收敛时间、数据传输效率、路由表更新频率以及负载均衡性能等关键指标上的优越性。这些研究结果不仅为云计算环境下智能路由的应用提供了创新性的思路,也为构建更智能、高效的云计算系统奠定了基础。

关键词：智能路由算法云计算数据通信强化学习

“一带一路”背景下新质生产力对民族传统体育的影响

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当代体育科技 2024年第29期14卷 115-118页

作者：张广燕额尔敦朝格图内蒙古师范大学

在“一带一路”背景下，新质生产力对民族传统体育产生了显著影响。新质生产力主要是由技术革命性突破、生产要素创新性配置和产业深度转型升级所催生的，其特点在于创新和质优。该文深入探讨了“一带一路”背景下新质生产力对民族传统... 详细信息

在“一带一路”背景下，新质生产力对民族传统体育产生了显著影响。新质生产力主要是由技术革命性突破、生产要素创新性配置和产业深度转型升级所催生的，其特点在于创新和质优。该文深入探讨了“一带一路”背景下新质生产力对民族传统体育的深远影响。民族传统体育承载着中华优秀传统文化的血脉基因，习近平文化思想的提出为民族传统体育的当代发展提供了行动指南与根本遵循。该文通过分析新质生产力的独特特点与发展趋势，结合民族传统体育的当前状况及面临的挑战，指出新质生产力为民族传统体育的现代化、国际化发展开辟了新路径，同时也带来了前所未有的挑战。基于此，该文提出政府与社会应加大对民族传统体育的支持与保护力度，并积极促进新质生产力与民族传统体育的深度融合与创新，以推动民族传统体育的可持续发展。

关键词： “一带一路” 新质生产力民族传统体育产业融合人才培养文化认同

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Removing lignin model pollutants with BiFeO_3–g-C_3N_4 compound as an efficient visible-light-heterogeneous Fenton-like catalyst

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Journal of Environmental Sciences 2016年第10期28卷 218-229页

作者： Junjian An guangyan zhang Rongfeng Zheng Peng Wang School of Pulp and Paper Engineering Hubei Provincial Key Laboratory of Green Materials for Light Industry Hubei University of Technology

BiFeO3-g-C3N4 nanoscaled composite was prepared with a hydrothermal method and evaluated as a highly efficient photo-Fenton like catalyst under visible light irradiation. The BiFeO3-g-CHN4 composite exhibited much stronger adsorption ability to lignin model pollutant （guaiacol） than that of BiFeO3, which may be due to the higher specific surface area （BiFeO3-g-C3N4：35.59 m2/g 〉 BiFeO3：7.42 m2/g） and the adsorption form of π-π stack between g-C3N4 and guaiacol. The composite exhibited excellent visible light-Fenton like catalysis activity, being influenced by the solution pH value and the proportions of BiFe03 and g-C3N4 nanosheets. Under optimal conditions with visible light irradiation, the BiFeO3- g-C3N4 composite yielded fast degradation of guaiacol with an apparent rate constant of 0.0452 rain-I, which were 5.21 and 6.80 folds of that achieved by using BiFeO3 and the mixture of BiFeO3 and g-C3N4 nanosheets, respectively. The significantly enhanced visible light-Fenton like catalytic properties of the BiFeO3-g-C3N4 composite in comparison with that of BiFeO3 was attributed to a large surface area, much increased adsorption capacity and the semiconductor coupling effect between BiFe03 and g-C3N4 in the composite.

关键词： BiFeO3g-C3N4 nanosheetsHeterogeneous Fenton-like catalysisVisible light catalystDegradation

AIP:a tool for flexible and transparent data management

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Science China(Information Sciences) 2013年第5期56卷 191-201页

作者： zhang guangyan QIU JianPing SHU JiWu ZHENG WeiMin Department of Computer Science and Technology Tsinghua University Tsinghua National Laboratory for Information Science and Technology Tsinghua University

Existing data management tools have some limitations such as restrictions to specific file systems or shortage of transparence to *** this paper,we present a new data management tool called AIP,which is implemented via the standard data management API,and hence it supports multiple file systems and makes data management operations transparent to ***,AIP provides centralized policy-based data management for controlling the placement of files in different storage ***,AIP uses differentiated collections of file states to improve the execution efficiency of data management policies,with the help of the caching mechanism of file ***,AIP also provides a resource arbitration mechanism for controlling the rate of initiated data management *** results from representative experiments demonstrate that AIP has the ability to provide high performance,to introduce low management overhead,and to have good scalability.

关键词： data management DMAPI management policy differentiated collection resource arbitration

基于TABS的建筑围护结构蓄冷研究与应用现状

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建筑科学 2024年第8期40卷 271-280页

作者：崔茁王海英张峰鸣张广岩苏以通魏刚许哲文青岛理工大学环境与市政工程学院山东青岛266555 青岛国际机场集团有限公司山东青岛266555

阐述了基于TABS(Thermally Active Building Systems)的建筑围护结构蓄冷的工作原理,从蓄冷运行原理、冷源、控制策略以及实际工程应用等方面简述了该方式供冷的研究现状及应用情况。这类系统通过埋设于建筑围护结构中的辐射末端对空调... 详细信息

阐述了基于TABS(Thermally Active Building Systems)的建筑围护结构蓄冷的工作原理,从蓄冷运行原理、冷源、控制策略以及实际工程应用等方面简述了该方式供冷的研究现状及应用情况。这类系统通过埋设于建筑围护结构中的辐射末端对空调房间进行冷却,对于间歇运行的建筑,可借助围护结构本身的热容实现蓄冷。主要介绍了该蓄冷模式下的末端结构、运行控制策略、天然冷源利用情况、设计要点、部分应用案例等。对采用嵌入式辐射末端供冷的空调系统,参照此模式运行,可实现一定的节能及运行费用的降低等,对工程应用具有良好的借鉴意义。

关键词：蓄冷辐射末端冷源运行控制

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常用海水硝酸盐测定方法的比对研究

化工管理 2024年第23期 53-56页

作者：宁尚晓李环环张光岩东营市生态环境局垦利区分局山东东营257000 山东省东营生态环境监测中心山东东营257000

目前,海洋生态环境问题越来越引起人们的重视,氮磷已成海洋生态水体的主要超标物质,其中海水硝酸盐是无机氮的最主要形式之一。为便于在海水监测工作中选择合适的监测方法,确保硝酸盐监测数据的真实、准确,文章对日常工作中测定海水硝... 详细信息

目前,海洋生态环境问题越来越引起人们的重视,氮磷已成海洋生态水体的主要超标物质,其中海水硝酸盐是无机氮的最主要形式之一。为便于在海水监测工作中选择合适的监测方法,确保硝酸盐监测数据的真实、准确,文章对日常工作中测定海水硝酸盐使用过的镉柱还原法、锌镉还原法、流动分析法进行了比对。得出的结论是不推荐使用锌镉还原法,如确需使用可选择优化后的铵锌镉还原法,使用前应开展方法验证;镉柱还原法是常用的方法,其操作步骤繁琐,测定过程较长,运维成本较低,适合少量样品的测定;流动分析法是当前推荐优先使用方法,其灵敏度高,操作简单,运维成本高,适合大量常规样品测定。

关键词：硝酸盐氮镉柱还原锌镉还原流动分析生态环境海洋化工

An efficient and facile approach for the construction of chondroitin sulfate E oligosaccharide precursors

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Chinese Chemical Letters 2019年第3期30卷 686-689页

作者： guangyan zhang Qi Liu Shuang Yang Zhehui Zhao Pingsheng Lei State Key Laboratory of Bioactive Substance and Function of Natural Medicines Beijing Key Laboratory of Active Substances Discovery and Drug ability Evaluation Department of Medicinal Chemistry Institute of Materia Medica & Peking Union Medical College Chinese Academy of Medical Sciences

An efficient and facile approach has been developed for the construction of chondroitin sulfate E(CS-E)oligosaccharide precursors. In this approach, the disaccharide unit with the GalNAc-GIcA sequence was first elongated to form tetra-and hexasaccharides followed by the introduction of anomeric groups via glycosylation couplings. A number of CS-E tetra-and hexasaccharide precursors were prepared in high yields.

关键词： Chon droitin sulfate E Glycosylation Oligosaccharide Anomeric group Modification

Asurvey on design and application of open-channel solid-state drives

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Frontiers of Information Technology & Electronic Engineering 2023年第5期24卷 637-658页

作者： Junchao CHEN guangyan zhang Junyu WEI Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China Xi’an Satellite Control Center Xi’an 710043China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China

Compared with traditional solid-state drives(SSDs),open-channel SSDs(OCSSDs)expose their internal physical layout and provide a host-based flash translation layer(FTL)that allows host-side software to control the internal operations such as garbage collection(GC)and input/output(I/O)*** this paper,we comprehensively survey research works built on OCSSDs in recent *** show how they leverage the features of OCSSDs to achieve high throughput,low latency,long lifetime,strong performance isolation,and high resource *** categorize these efforts into five groups based on their optimization methods:adaptive interface customizing,rich FTL co-designing,internal parallelism exploiting,rational I/O scheduling,and efficient GC *** discuss the strengths and weaknesses of these efforts and find that almost all these efforts face a dilemma between performance effectiveness and management *** hope that this survey can provide fundamental knowledge to researchers who want to enter this field and further inspire new ideas for the development of OCSSDs.

关键词： Domain-specific storage Flash translation layer Garbage collection Internal parallelism Open-channel solid-state drives(OCSSDs)

Short Tail:taming tail latency for erasure-code-based in-memory systems

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Frontiers of Information Technology & Electronic Engineering 2022年第11期23卷 1646-1657页

作者： Yun TENG Zhiyue LI Jing HUANG guangyan zhang College of Computer Science and Technology Jilin UniversityChangchun 130012China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education Jilin UniversityChangchun 130012China Beijing National Research Center for Information Science and Technology(Tsinghua University) Beijing 100084China

In-memory systems with erasure coding(EC)enabled are widely used to achieve high performance and data ***,as the scale of clusters grows,the server-level fail-slow problem is becoming increasingly frequent,which can create long tail *** influence of long tail latency is further amplified in EC-based systems due to the synchronous nature of multiple EC *** this paper,we propose an EC-enabled in-memory storage system called ShortTail,which can achieve consistent performance and low latency for both reads and ***,ShortTail uses a lightweight request monitor to track the performance of each memory node and identify any fail-slow ***,ShortTail selectively performs degraded reads and redirected writes to avoid accessing fail-slow ***,ShortTail posts an adaptive write strategy to reduce write amplification of small *** implement ShortTail on top of Memcached and compare it with two baseline *** experimental results show that ShortTail can reduce the P99 tail latency by up to 63.77%;it also brings significant improvements in the median latency and average latency.

关键词： Erasure code In-memory system Node fail-slow Small write Tail latency