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Social welfare maximization for SRSNs using bio-inspired communitycooperation mechanism

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Chinese Science Bulletin 2012年第1期57卷 125-131页

作者： xu yuhua WU QiHui WANG JinLong YAO YuDong Institute of Communications Engineering PLA University of Science and TechnologyNanjing 210007China Department of Electrical and Computer Engineering Stevens Institute of TechnologyNew Jersey 07030USA

This paper considers social welfare maximization for spatial resource sharing networks(SRSNs),in which multiple autonomous users are spatially located and mutual influence only occurs between nearby users.To cope with a lack of central control and the restriction that only local information is available,a spatial resource sharing game is proposed.However,individual selfishness in traditional game models generally leads to inefficiency and dilemmas.Inspired by local cooperative behavior in biological sys- tems,a community cooperation mechanism(CCM)is proposed to improve the efficiency of the game.Specifically,when a user makes a decision,it maximizes the aggregate payoffs for its local community rather than selfishly consider itself.It is analytically shown that with the bio-inspired CCM,the social optimum of SRSNs is achieved with an exchange of local information.The proposed bio-inspired CCM is very general and can be applied to various communication networks.

关键词：社会福利合作机制最大化仿生游戏模式空间资源生物系统信息交换

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生态工业园区建设的环境管理策略研究

黑龙江环境通报 2024年第7期37卷 120-122页

作者：徐育华深圳市巧匠环保科技有限公司广东深圳518000

生态工业园区建设的核心目标是实现工业与生态的协调发展。通过科学规划和有效管理,可以最大限度地减少环境污染和生态破坏。引入清洁生产技术、循环经济模式和环境治理措施,可有效防止和减少污染物的排放,保护自然资源和生态系统。本... 详细信息

生态工业园区建设的核心目标是实现工业与生态的协调发展。通过科学规划和有效管理,可以最大限度地减少环境污染和生态破坏。引入清洁生产技术、循环经济模式和环境治理措施,可有效防止和减少污染物的排放,保护自然资源和生态系统。本文主要介绍了生态工业园区建设的环境管理策略,希望为相关研究提供参考。

关键词：生态工业园区环境管理策略

Hierarchical Cognition Cycle for Cognitive Radio Networks

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China Communications 2015年第1期12卷 108-121页

作者： WANG Jinlong FENG Shuo WU Qihui ZHENG xueqiang xu yuhua College of Communications Engineering PLA University of Science and Technology

Cognitive radio(CR) can bring about remarkable improvement in spectrum utilization.Different cognition cycles have been proposed in recent years.However,most of the existing works only emphasize functional or operational aspects of cognition cycle,regardless of other indispensable aspects and the connection between them.To deal with the emerging situation of "data rich,information vague,knowledge poor" in cognitive radio networks(CRNs),we propose the hierarchical cognition cycle(HCC) as a new transdisciplinary research field in this paper.HCC investigates a fundamental problem,which is how to manage available resources in the complex environment to meet various demands in CRN.A comprehensive theoretical framework of HCC is established in terms of the core,the essence loop,the function loop,the operation loop,and the external loop of HCC.The reduction of uncertainty in CRN is studied and several new metrics in HCC are defined.Furthermore,a few research challenges ahead are presented as well.

关键词：循环功能无线电网络操作回路频谱利用率认知无线电 HCC CRN 不确定性

基于复杂网络的中国碳排放权价格风险传染研究

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工业技术经济 2024年第4期43卷 25-35页

作者：徐玉华刘梦娜王浚丞南京审计大学统计与数据科学学院南京211815 南京审计大学金融学院南京211815

明晰碳价影响因素网络变化,有助于发现中国碳市场现阶段的主要风险源及风险传染特征,对维持碳价稳定与推动经济社会绿色低碳发展有着重大的理论及实践意义。本文基于格兰杰因果检验,构建了含有20个指标的碳价影响因素风险网络。首先通... 详细信息

明晰碳价影响因素网络变化,有助于发现中国碳市场现阶段的主要风险源及风险传染特征,对维持碳价稳定与推动经济社会绿色低碳发展有着重大的理论及实践意义。本文基于格兰杰因果检验,构建了含有20个指标的碳价影响因素风险网络。首先通过网络拓扑性质,识别关键性指标,分析网络结构,然后利用k-core算法对网络进行分层分析及传播动力学分析,最后运用最小树形图筛选网络连边,分析指标间的风险传染路径。结果表明:全国碳市场运行后,国际碳价与国外经济形势处于风险网络的核心位置,有着较强的风险传染能力;网络整体风险传染能力减弱,风险传染范围变窄,传染速度变慢;网络的层次变浅,风险更易感知;利率与汇率中介作用显著减弱,而中国大庆原油现货价格有着较强的中介作用。

关键词：复杂网络碳排放权价格风险传染格兰杰因果检验网络结构统计特征

Achieving Fuzzy Matching Data Sharing for Secure Cloud-Edge Communication

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China Communications 2022年第7期19卷 257-276页

作者： Chuan Zhang Mingyang Zhao yuhua xu Tong Wu Yanwei Li Liehuang Zhu Haotian Wang School of Cyberspace Science and Technology Beijing Institute of TechnologyBeijing 100081China School of Computer Science and Technology Beijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China National Computer Network Emergency Response Technical Team/Coordination Center of China Beijing 100029China College of Arts and Science University of PennsylvaniaPhiladelphia 19104USA

In this paper,we propose a novel fuzzy matching data sharing scheme named FADS for cloudedge communications.FADS allows users to specify their access policies,and enables receivers to obtain the data transmitted by the senders if and only if the two sides meet their defined certain policies simultaneously.Specifically,we first formalize the definition and security models of fuzzy matching data sharing in cloud-edge environments.Then,we construct a concrete instantiation by pairing-based cryptosystem and the privacy-preserving set intersection on attribute sets from both sides to construct a concurrent matching over the policies.If the matching succeeds,the data can be decrypted.Otherwise,nothing will be revealed.In addition,FADS allows users to dynamically specify the policy for each time,which is an urgent demand in practice.A thorough security analysis demonstrates that FADS is of provable security under indistinguishable chosen ciphertext attack(IND-CCA)in random oracle model against probabilistic polynomial-time(PPT)adversary,and the desirable security properties of privacy and authenticity are achieved.Extensive experiments provide evidence that FADS is with acceptable efficiency.

关键词： fuzzy-matching privacy-preserving set intersection cloud-edge communication data sharing

基于深度迁移学习的动态频谱快速适配抗干扰方法

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信息对抗技术 2024年第1期3卷 33-45页

作者：李思达徐逸凡刘杰林凡迪韩昊易剑波徐煜华陆军工程大学通信工程学院江苏南京210000 海南宝通实业公司海南海口570100

机器学习逐渐发展成为一种成熟强大的技术工具,并被广泛应用于无线通信抗干扰领域。其中,较为典型的有基于深度强化学习的抗干扰方法,通过与动态、不确定通信环境的不断交互来学习最优用频策略,有效解决动态频谱接入抗干扰的问题。然而... 详细信息

机器学习逐渐发展成为一种成熟强大的技术工具,并被广泛应用于无线通信抗干扰领域。其中,较为典型的有基于深度强化学习的抗干扰方法,通过与动态、不确定通信环境的不断交互来学习最优用频策略,有效解决动态频谱接入抗干扰的问题。然而,由于外界电磁频谱空间复杂、干扰模式样式动态多变,从头开始学习复杂的抗干扰通信任务往往时效性差,导致学习效率和通信性能显著下降。针对上述问题,提出基于深度迁移学习的动态频谱快速适配抗干扰方法。首先,通过构建预训练模型对已知干扰模式进行学习;其次,使用卷积神经网络提取现实场景下的感知频谱数据,重用过往经验优先启动加速适配;最后,运用微调策略辅助强化学习实施在线抗干扰信道接入。仿真结果表明,相较于传统强化学习算法,所提方法能够有效加快算法收敛速度,提升通信设备抗干扰性能。

关键词：动态频谱抗干扰深度迁移学习强化学习快速适配

一带一路背景下高职院校针灸推拿专业国际人才培养模式及课程体系的构建

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中国中医药现代远程教育 2024年第14期22卷 170-173页

作者：魏潇徐毓华刘嘉冯晓然王从成朱杰江苏卫生健康职业学院中西医结合学院江苏南京211800

“一带一路”建设为推动构建人类卫生健康共同体的重要载体,为中医药国际化发展提供了良好机遇。针对“一带一路”背景下高职院校针灸推拿专业国际人才需求现状,围绕国家《“十四五”中医药发展规划》要求,为推进中医药高质量融入“一... 详细信息

“一带一路”建设为推动构建人类卫生健康共同体的重要载体,为中医药国际化发展提供了良好机遇。针对“一带一路”背景下高职院校针灸推拿专业国际人才需求现状,围绕国家《“十四五”中医药发展规划》要求,为推进中医药高质量融入“一带一路”建设,江苏卫生健康职业学院针灸推拿专业立足自身优势,根据留学生自身特点及中医学学习规律,深入探索“中文+中医药技能”的人才培养模式,构建出具有中医药特色的“六道”人才课程体系,在“讲好中医药故事、传播中医药文化”方面做出了突出贡献。

关键词：一带一路针灸推拿国际化人才培养课程体系

Abnormal grain growth induced byδ→γphase transformation in Fe-based shape memory alloys

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Journal of Materials Science & Technology 2024年第5期172卷 196-201页

作者： Huabei Peng Liqiu Yong Gaixia Wang Jiazhen Yan Bing xu yuhua Wen School of Mechanical Engineering Sichuan UniversityChengdu 610065China Science and Technology on Reactor Fuel and Materials Laboratory Nuclear Power Institute of ChinaChengdu 610041China

Grain boundaries,including low-angle,high-angle,and coinci-dence boundaries,are intrinsic interfaces in polycrystalline materi-als.During heat-treatment at sufficiently high temperatures,grain boundary migration occurs because the grain boundaries are ther-modynamically unstable.Consequently,grain growth occurs due to a decrease in grain boundary area after heat-treatment[1].In general,there are two types of grain growth:normal grain growth,where grains grow uniformly,and abnormal grain growth,where one or a few grains selectively grow and engulf surround-ing smaller grains,leading to the formation of large grains,some-times several millimeters or greater in size[2].The classical tech-nique to achieve abnormal grain growth is the strain-annealing method,which involves subjecting the material to a small strain followed by annealing[3,4].This method has been reported to ob-tain single-crystal wires or plates[1].Additionally,abnormal grain growth can be achieved by plastic straining at high temperatures,resulting in the fabrication of large grains or single crystals[5].However,the above methods are not applicable to components with complicated shapes due to the inevitable deformation pro-cess.Recently,Omori et al.developed a simply method of abnor-mal grain growth to fabricate ultra-large grains,even single crys-tals,in Cu-Al-Mn[1],Fe-Mn-Al-Ni[2],and Fe-Mn-Al-Ni-Cr[6]al-loys.This method involves applying cyclic heat treatment between a high temperature BCC single-phase region and a low tempera-ture BCC+FCC two-phase region[1,2,6-12].Note that the cyclic heat treatment resulted in the formation of BCC sub-grain struc-tures responsible for abnormal grain growth[1,2,6-12].In addition,Yang et al.reported that abnormal grain growth occurred at above 900℃,and large-grains,even single crystals,were obtained only through annealing cast Cu-based polycrystalline alloys contained coherent nano-particles[13,14].Notably,the cyclic heat treatment and annealing cast alloys are deformation-free and much simpler than the strain-anne

关键词： grain alloys deformation

Surface structural transformation of Ni2P@C electrocatalysts for overall alkaline water splitting

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Progress in Natural Science:Materials International 2024年第1期34卷 102-107页

作者： Kun Yang Xinjuan Liu Jun xu Yun Gong Shuling Shen Jinchen Fan Xiaojie Zhang yuhua xue School of Materials and Chemistry University of Shanghai for Science and Technology National&Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of Technology

Understanding the surface restructuring, including atomic rearrangement and chemical composition adjustments,is urgent to accelerate electrocatalytic reactions. Herein, we focus on the surface restructuring and active species for phosphide especially Ni2P during the water splitting process by combination of in-situ Raman and ex-situ X-ray photoelectron spectroscopy. Results confirm that NiOOH and NiOO* are formed during OER, while Niδ+-Hadactive sites are formed during HER. In situ-formed NiOOH/Ni2P@C and Niδ+/Ni2P@C show enhanced water splitting（1.514 V at 10 mA/cm2） and NO3RR(86% and 668 μmol h-1cm-2for NH3Faraday efficiency and yield)activities. In-depth investigation of the surface dynamic changes can provide guidance for establishing the relation of structure-electrocatalytic activity.

关键词： Dynamic surface restructuring Phase structural transition In-situ Raman spectra Ni_2P@C Overall water splitting