检索结果-南通市图书馆

Universal design of three-dimensional porous graphene-iron based promotors for kinetically rationalized lithium-sulfur chemistry

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 192-200页

作者： Hua gao Yunfeng Zhang Menglei Wang Ruoxuan Yang Shuai feng Xuan Cao Yaping Zhang Zhongyuan lu Yingze Song State Key Laboratory of Environment-Friendly Energy Materials School of Materials and Chemistry Southwest University of Science and Technology School of Material Science and Engineering Henan University of Technology College of Chemistry and Chemical Engineering Taishan University

Lithium-sulfur （Li-S） batteries are widely deemed to be one of the most potential candidates for future secondary batteries because of their remarkable energy ***,notorious polysulfide shuttling and retarded sulfur reaction kinetics pose significant obstacles to the further application of Li-S *** rationally designed highly active electrocatalysts can facilitate polysulfide conversion,the universal and scalable synthesis strategies need to be ***,a universal synthetic strategy to construct a series of three-dimensional （3D） porous graphene-iron （3DGr-Fe） based electrocatalysts involving 3DGr-FeP,3DGr-Fe3C,and 3DGr-Fe3Se4is exploited for manipulating the Li-S redox *** has been observed that the implementation of a 3D porous Gr architecture leads to the well-designed conductive networks,while the uniformly dispersed iron nanoparticles introduce an abundance of active sites,fostering the lithium polysulfide conversion,thereby bolstering the overall electrochemical *** Li-S battery with the 3DGr-Fe based electrocatalyst exhibits remarkable capacity retention of 94.8%upon 100 times at 0.2 ***,the soft-packaged Li-S pouch cell based on such a 3DGr-Fe electrocatalyst delivers superior capacity of 1060.71 mA h g-1and guarantees for the continuous 30 min work of fan *** investigation gives comprehensive insights into the design,synthesis,and mechanism of 3DGr-Fe based electrocatalysts with high activity toward efficient and durable Li-S batteries.

关键词： Redox reactions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

TCP友好的路由器设计

国防科技大学学报 2005年第5期27卷 25-29,94页

作者：吕高锋胡晓峰国防科技大学计算机学院湖南长沙410073

TCP流是网络中主要数据流,TCP协议处理机制的研究有助于我们认知网络内部复杂特性,合理利用网络资源,这些对于路由器设计具有重要意义。根据TCP协议处理机制,在分析TCP协议加增倍减的拥塞控制模式对报文缓冲的影响和TCP流保序性要求对... 详细信息

TCP流是网络中主要数据流,TCP协议处理机制的研究有助于我们认知网络内部复杂特性,合理利用网络资源,这些对于路由器设计具有重要意义。根据TCP协议处理机制,在分析TCP协议加增倍减的拥塞控制模式对报文缓冲的影响和TCP流保序性要求对报文处理的影响的基础上,对路由器的设计中报文缓冲和报文分配等关键问题提出了TCP友好的解决方案。TCP友好的路由器设计有利于提高路由器处理能力。

关键词：路由器体系结构 TCP拥塞控制报文乱序

An On-Demand Security Mechanism for Cloud-Based Telecommunications Services

在线全文

学校读者我要写书评

暂无评论

ZTE Communications 2011年第1期9卷 37-40页

作者： Zhaoji Lin Ping lu Shengmei luo feng gao Jianyong Chen ZTE Corporation

As cloud computing gains in popularity, data migrated off premises is exposed to more threats than ever before. This is because data is out of control of the owner while floating in the cloud. Traditional device-centric security systems are not efficient enough and need to be evolved to data-centric protection systems. Cloud telecommunications services require security measures in three domains： data storage, processing, and transmission. Data stored in the cloud requires a mechanism to protect it; data in transit needs to be protected either at the service or transmission level; and data being processed needs to be protected during the processing stage. In this paper, we propose a security model based on a new method of security domain division to provide on-demand, dynamic, and differentiated protection for cloud-based telecommunications services.

关键词： cloud computing security on demand

在线全文

学校读者我要写书评

暂无评论

民国时期新闻出版人从业生态

编辑之友 2017年第8期 92-100页

作者：陆高峰浙江理工大学史量才新闻与传播学院浙江杭州310018

民国时期是我国新闻出版业从传统向现代全面转型时期,也是报刊新闻业务由政论时代向新闻时代转型的重要时期。由于战争不断,社会长期动荡不安,新闻出版业发展艰难,新闻出版人从业生态也面临着前所未有的艰险性和复杂性。主要表现为战争... 详细信息

民国时期是我国新闻出版业从传统向现代全面转型时期,也是报刊新闻业务由政论时代向新闻时代转型的重要时期。由于战争不断,社会长期动荡不安,新闻出版业发展艰难,新闻出版人从业生态也面临着前所未有的艰险性和复杂性。主要表现为战争和敌对势力暗杀恐怖活动,使新闻出版人工作凶险;各方政治势力打压,使得出版艰难,表达受禁,言论自由难以保障;新闻出版条件简陋、从业环境艰苦;技术落后和政治阻碍,导致传播渠道难以畅通;社会动荡导致薪酬收入不稳定,从业人员生活艰辛;新闻出版人职业素质和素养还处在成长期,职业精神、业务能力有待完善。

关键词：民国新闻出版新闻人出版人从业生态

在线全文

学校读者我要写书评

暂无评论

微信舆论生态治理研究的价值、现状与路径

河南大学学报（社会科学版） 2017年第2期57卷 137-142页

作者：陆高峰浙江理工大学史量才新闻与传播学院浙江杭州310018

舆论生态治理观是一种用生态学理论中整体、平衡、互动、和谐、全面等观念来综合看待、解决舆论生态中出现问题的观念。在当前舆论热点、突发事件不断,微信舆论已经出现大量谣言、欺诈、侵权等非法不良信息的情况下,加强微信舆论传播与... 详细信息

舆论生态治理观是一种用生态学理论中整体、平衡、互动、和谐、全面等观念来综合看待、解决舆论生态中出现问题的观念。在当前舆论热点、突发事件不断,微信舆论已经出现大量谣言、欺诈、侵权等非法不良信息的情况下,加强微信舆论传播与生态治理研究,有利于提高社会治理水平。现有微信舆论治理研究大都从管理、监管、管控等单向视角来研究。研究视角过于强调政府等管理者的作用,忽视了普通公众的自我参与;治理方法过于强调法律、国家机器等硬性管理,忽视了道德、习俗、文化认同等软性控制。加强微信舆论与治理研究,必须创新思维,综合运用多种硬性、软性社会治理手段,加强微信舆论的多维生态治理。

关键词：微信舆论生态治理

在线全文

学校读者我要写书评

暂无评论

红军长征期间的信息传播体系与策略

编辑之友 2018年第5期 88-93页

作者：陆高峰浙江理工大学史量才新闻与传播学院

信息传播体系是进行组织动员、维系组织运行的基础。长征途中,除《红星》报等极少数刊物坚持油印出版外,绝大部分苏区刊物基本停刊。在原有传播体系被打破的情况下,中央机关和红军利用共产国际援助和自身现有条件,在长征沿线,甚至国统... 详细信息

信息传播体系是进行组织动员、维系组织运行的基础。长征途中,除《红星》报等极少数刊物坚持油印出版外,绝大部分苏区刊物基本停刊。在原有传播体系被打破的情况下,中央机关和红军利用共产国际援助和自身现有条件,在长征沿线,甚至国统区维系着一套包括报纸、期刊、图书、标语口号、文艺宣传等在内的完整的信息传播体系。这给红军打破封锁,顺利实现战略转移,并在长征途中宣传抗日主张,获得国内外民众支持,最终为取得长征的胜利奠定了基础。

关键词：红军长征传播体系红色中华红星报

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

域间IP欺骗防御服务净化机制

计算机学报 2009年第3期32卷 552-563页

作者：吕高锋孙志刚卢锡城国防科学技术大学计算机学院长沙410073

IP地址真实性验证成为构建可信网络的基础,基于粗粒度的源-目的自治域标识(密钥)的域间IP欺骗报文过滤机制具有处理简单、保护范围广、部署激励高等优点,却存在不能过滤自治域内子网间IP欺骗报文等不足.而细粒度的源-目的子网标识能够... 详细信息

IP地址真实性验证成为构建可信网络的基础,基于粗粒度的源-目的自治域标识(密钥)的域间IP欺骗报文过滤机制具有处理简单、保护范围广、部署激励高等优点,却存在不能过滤自治域内子网间IP欺骗报文等不足.而细粒度的源-目的子网标识能够解决过滤粒度粗的问题,却带来了更严重的处理复杂、计算和存储开销大等问题.针对IP欺骗防御机制的计算复杂度和过滤粒度之间的矛盾,提出一种新颖的域间IP欺骗防御服务净化机制***立足于域间IP欺骗防御,根据自治域内拓扑结构的稳定性,引入非对称的细粒度的源子网-目的自治域标识方式,实现对自治域间和自治域内子网间IP欺骗报文的检测与过滤.根据主要的IP欺骗报文攻击的流特征,引入流异常检测机制,实现细粒度标识的动态触发,进一步降低细粒度标识的计算和存储开销,同时对子网内恶意数据流进行流速限制.RISP在不增加自治域内防御实体的情况下,使得防御实体能够过滤自治域内子网间IP欺骗报文,计算和存储开销小,过滤粒度细,而且具有较高的部署激励.

关键词： IP欺骗防御非对称标识动态标记可信网络

Optimizing battery deployment: Aging trajectory prediction enabling homogenous performance grouping

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 565-577页

作者： Shuquan Wang feng gao Zhan Ma Hao Tian Yusen Zhang School of Control Science and Engineering Shandong University Key Lab of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University

As battery deployments in electric vehicles and energy storage systems grow, ensuring homogeneous performance across units is crucial. We propose a multi-derivative imaging fusion(MDIF) model, employing advanced imaging and machine learning to predict battery aging trajectories from minimal initial data, thus facilitating effective performance grouping before deployment. Utilizing a derivative strategy and Gramian Angular Difference Field for dimensional enhancement, the MDIF model uncovers subtle predictive features from discharge curve data after only ten cycles. The architecture includes a parallel convolutional neural network with lateral connections to enhance feature integration and *** on a self-developed dataset, the model achieves an average root-mean-square error of 0.047 Ah and an average mean absolute percentage error of 1.60%, demonstrating high precision and *** robustness is further validated through transfer learning on two publicly available datasets, adapting with minimal retraining. This approach significantly reduces the testing cycles required, lowering both time and costs associated with battery testing. By enabling precise battery behavior predictions with limited data, the MDIF model optimizes battery utilization and deployment strategies, enhancing system efficiency and sustainability.

关键词： Lithium-ion battery Battery prognostics Fusion model Convolutional neural network Transfer learning

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states