检索结果-南通市图书馆

作者： chunjia wang Yongquan Fan Yajun Du Zefen Sun School of Computer and Software Engineering Xihua University

With the rapid development of social media,more and more people get information from social *** retweet prediction task helps to study the process of information dissemination on social *** methods take into account text features and ignore user’s sentiments and *** history tweets tweeted by the user not only reflect the user’s sentiments that the user tends to express on social media,but also shows the user’s *** this work,we used a deep learning method to extract features from user profiles,user history,user network,target tweet,then we used these features to predict whether a tweet will be retweeted by a *** results on dataset show that the proposed model can effectively predict the retweet behavior of users.

关键词： Deep learning Retweet behaviour Prediction model Social media

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大气环境监测治理探索

能源与节能 2022年第2期 190-191页

作者：王春佳唐山市迁西县环境监控中心河北唐山064300

环境问题是经济发展过程中必须要面临的重大问题。叙述了大气污染的主要原因,分析了大气环境监测的具体技术,探讨了大气污染治理及其具体治理措施。

关键词：大气污染环境监测治理措施

专利视角下植入式脑机接口电极技术发展趋势分析

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信息通信技术与政策 2023年第3期49卷 61-67页

作者：周洁王淳佳张倩中国信息通信研究院知识产权与创新发展中心创新发展与成果转化研究部北京100191

植入式脑机接口电极对神经疾病的诊断、预警和治疗以及脑科学研究具有重要意义。从专利视角回顾和研判了植入式电极的全球技术发展趋势,研究了生物相容性、信号质量提升的最新技术解决思路;并呼吁我国政府加大在植入式电极领域的研发投... 详细信息

植入式脑机接口电极对神经疾病的诊断、预警和治疗以及脑科学研究具有重要意义。从专利视角回顾和研判了植入式电极的全球技术发展趋势,研究了生物相容性、信号质量提升的最新技术解决思路;并呼吁我国政府加大在植入式电极领域的研发投入力度,以及加强对先进制造工艺和材料技术的关注,加快推动植入式电极成熟落地应用和完善专利布局。

关键词：脑机接口植入式电极专利生物相容性信号质量

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基于簇的无线传感器网络交会路由协议

计算机测量与控制 2019年第5期27卷 265-270页

作者：杨旭王春佳李莉云南机电职业技术学院工业信息技术系昆明650203 云南师范大学基础教育集团昆明650092

针对现有无线传感器网络(WSN)协议中更多消耗sink附近节点能量导致网络寿命短的问题,提出一种基于簇的无线传感器网络交会路由协议(Cluster-based Rendezvous Routing Protocol,CRRP);该协议在网络的中间构建交会区域,该交会区域划分整... 详细信息

针对现有无线传感器网络(WSN)协议中更多消耗sink附近节点能量导致网络寿命短的问题,提出一种基于簇的无线传感器网络交会路由协议(Cluster-based Rendezvous Routing Protocol,CRRP);该协议在网络的中间构建交会区域,该交会区域划分整个网络区域并在传感器节点之间分配网络负载,延长了网络寿命;此交会区域内的节点分为不同的簇,每个簇的簇头(CH)负责不同簇之间的通信,sink在此交会区域内发送其更新的位置信息,并且当传感器节点想要发送数据时,会从该交会区域检索sink的当前位置信息并直接将数据发送到sink;仿真实验结果表明,在能耗与网络寿命性能方面,所提CRRP协议优于Rendezvous协议、LBDD协议、Railroad协议和Ring协议。

关键词：无线传感器网络交会区域基于簇的交会路由网络寿命

吉林省汽修行业VOC污染治理可持续发展研究

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绿色科技 2020年第10期22卷 20-24页

作者：王淳加王国臣王玉延边大学吉林延吉133002 吉林省环境科学研究院吉林长春130012

为推进吉林省汽修行业VOC整治工作,对汽修行业VOC治理现状及治理技术的发展趋势行了简要地阐述,并对符合吉林省发展趋势的治理技术进行了经济比较,分析了存在的问题,提出了具有针对性的解决方法:夯实基础、强化支撑,同时出台经济补助政... 详细信息

为推进吉林省汽修行业VOC整治工作,对汽修行业VOC治理现状及治理技术的发展趋势行了简要地阐述,并对符合吉林省发展趋势的治理技术进行了经济比较,分析了存在的问题,提出了具有针对性的解决方法:夯实基础、强化支撑,同时出台经济补助政策,对推进吉林省汽修行业VOC治理工作具有重要意义。

关键词：汽修行业 VOC治理分析与建议吉林省

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电信网络智能化方案研究

电信科学 2023年第3期39卷 162-172页

作者：李涛王春佳李姗姗中国联合网络通信有限公司研究院北京100048 中国联合网络通信集团有限公司北京100033

电信运营商迫切需要通过智能化推动网络敏捷、高效、智能,实现网络的自我配置、自我管理、自我优化。但由于AI与通信网络的发展路线、技术特性不一致,需要系统地考虑如何将AI与通信网络深度融合。基于电信网络智能化行业发展情况,在对... 详细信息

电信运营商迫切需要通过智能化推动网络敏捷、高效、智能,实现网络的自我配置、自我管理、自我优化。但由于AI与通信网络的发展路线、技术特性不一致,需要系统地考虑如何将AI与通信网络深度融合。基于电信网络智能化行业发展情况,在对电信运营商智能化需求分析和现状评估的基础上,提出了电信网络智能化目标和技术方案,涵盖智能化框架、智能化功能模块与流程、数据处理、算法模型构建与集成等。该方案有助于推动电信运营商大规模智能化,提升运营效能。

关键词：电信网络智能化方案

Swarm intention identification via dynamic distribution probability image

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Chinese Journal of Aeronautics 2024年第10期37卷 380-392页

作者： Yinhan wang Jiang wang Shaoming HE Fei wang Qi wang School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China

In the realm of decision-making for defense and security applications,it is paramount to swiftly and accurately identify the intentions of incoming *** identification methods predominantly focus on single-target applications and overlook the perturbations introduced by measurement *** this study,we propose a novel concept:the Dynamic Distribution Probability(DDP)image,which is constructed using the estimated state and its covariance *** grayscale pixel value within the image signifies the probability of the presence of the agent within the *** proposed identification scheme integrates the use of Extended Kalman Filter(EKF),Convolutional Neural Network(CNN),Back Propagation(BP)network,and Gated Recurrent Unit(GRU)***,the DDP image is processed through a CNN to distill the formation characteristics,and the estimated swarm state from EKF is inputted into a BP network to deduce the kinematic *** outputs from both networks are summed and subsequently channeled into a GRU network to capture temporal *** numerical simulations and flight experiments are presented to demonstrate the robust anti-noise capability of the proposed scheme compared with conventional methods,as well as its superior training efficiency.

关键词： Intention Identification Kalman filters Convolutional neural networks Swarm intelligence

The reformation of catalyst:From a trial-and-error synthesis to rational design

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Nano Research 2024年第4期17卷 3261-3301页

作者： Ligang wang Jiabin Wu Shunwu wang Huan Liu Yao wang Dingsheng wang Department of Chemistry Tsinghua UniversityBeijing 100084China

The appropriate catalysts can accelerate the reaction rate and effectively boost the efficient conversion of various molecules,which is of great importance in the study of chemistry,chemical industry,energy,materials and environmental ***,efficient,environmentally friendly,and easy to operate synthesis methods have been used to prepare various types of *** previous studies have reported the synthesis and characterization of the aforementioned catalysts,more still remain in trial and error methods,without in-depth consideration and improvement of traditional synthesis ***,we comprehensively summarize and compare the preparation methods of the trial-and-error synthesis strategy,structure–activity relationships and density functional theory(DFT)guided catalysts rational design for nanomaterials and atomically dispersed *** also discuss in detail the utilization of the nanomaterials and single atom catalysts for converting small molecules(H_(2)O,O_(2),CO_(2),N_(2),etc.)into value-added products driven by electrocatalysis,photocatalysis,and ***,the challenges and outlooks of mass preparation and production of efficient and green catalysts through conventional trial and error synthesis and DFT theory are featured in accordance with its current development.

关键词： trial-and-error synthesis structure–activity relationships density functional theory(DFT)guidance nanomaterials atomically dispersed catalysts

Numerical Analysis of PRISM-PY Calculations for Hard-and Soft-Core Generic Polymer Models

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Chinese Journal of Polymer Science 2024年第4期42卷 532-543页

作者： Qiang wang Department of Chemical and Biological Engineering Colorado State University1370 Campus DeliveryFort CollinsCO80523-1370USA

Generic polymer models capturing the chain connectivity and excluded-volume interactions between polymer segments can be classified, according to whether or not the 3D integral of the latter diverges, into hard- and soft-core models. Taking homogeneous systems of compressible homopolymer melts (or equivalently homopolymer solutions in an implicit, good solvent) in the continuum as an example, we recently compared the correlation effects on the structural and thermodynamic properties of the hard- and soft-core models given by the polymer reference interaction site model (PRISM) theory with the Percus-Yevick (PY) closure (Polymers 2023, 15, 1180). Here we analyzed in detail the numerical errors and behavior of the interchain pair correlation functions (PCFs) given by the PRISM-PY calculations of these models using an efficient numerical approach that we proposed. Our numerical approach has the least number of independent variables to be iteratively solved, analytically treats the discontinuities caused by the non-bonded pair potential (such as that of the hard spheres) and takes only the inverse Fourier transform of the interchain indirect PCF between polymer segments (which is continuous and decays towards 0 with increasing wavenumber much faster than both the interchain direct and total PCFs), and is essential for us to accurately solve the PRISM-PY theory for chain length N as large as 106. To capture the correlation-hole effect, the real-space cut-off in the PRISM calculations should be proportional to the square root of N.

关键词： Generic polymer models Soft potentials Polymer reference interaction site model theory