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Cognitive RAN Slicing Resource Allocation Based on Stackelberg Game

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China Communications 2022年第5期19卷 12-23页

作者： Tengteng Ma Yong Zhang Siyu Yuan zhenjie cheng School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Key Laboratory of Work Safety Intelligent Monitoring(Beijing University of Posts and Telecommunications) Beijing 100876China Network Planning Research and innovation Center China Telecom Corporation Limited Research InstituteBeijing 102209China

The cognitive network has become a promising method to solve the spectrum resources shortage *** for the optimization of network slicing resources in the cognitive radio access network(RAN),we are interested in the profit of the mobile virtual network operator(MVNO)and the utility of secondary users(SUs).In cognitive RAN,we aim to find the optimal scheme for the MVNO to efficiently allocate slice resources to *** the MVNO and SUs are selfish and the game between the MVNO and SUs is difficult to reach equilibrium,we consider modeling this scheme as a Stackelberg *** mathematical programming with equilibrium constraints(MPEC)and Karush-Kuhn-Tucker(KKT)conditions,we can obtain a single-level optimization problem,and then prove that the problem is a convex optimization *** simulation results show that the proposed method is superior to the noncooperative *** guaranteeing the Quality of Service(QoS)of primary users(PUs)and SUs,the proposed method can balance the profit of the MVNO and the utility of SUs.

关键词： cognitive RAN network slicing MVNO Stackelberg game MPEC KKT

Downlink Resource Allocation for NOMA-Based Hybrid Spectrum Access in Cognitive Network

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中国通信:英文版 2023年第9期20卷 171-184页

作者： Yong Zhang zhenjie cheng Da Guo Siyu Yuan Tengteng Ma Zhenyu Zhang School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Key Laboratory of Work Safety Intelligent Monitoring(Beijing University of Posts and Telecommunications) Beijing 100876China

To solve the contradiction between limited spectrum resources and increasing communication demand,this paper proposes a wireless resource allocation scheme based on the Deep Q Network(DQN)to allocate radio resources in a downlink multi-user cognitive radio(CR)network with *** users(SUs)are multiplexed using non-orthogonal multiple access(NOMA).The SUs use the hybrid spectrum access mode to improve the spectral efficiency(SE).Considering the demand for multiple services,the enhanced mobile broadband(eMBB)slice and ultrareliable low-latency communication(URLLC)slice were *** proposed scheme can maximize the SE while ensuring Quality of Service(QoS)for the *** study established a mapping relationship between resource allocation and the DQN algorithm in the CR-NOMA *** to the signal-to-interference-plusnoise ratio(SINR)of the primary users(PUs),the proposed scheme can output the optimal channel selection and power *** simulation results reveal that the proposed scheme can converge faster and obtain higher rewards compared with the Q-Learning ***,the proposed scheme has better SE than both the overlay and underlay only modes.

关键词： cognitive network network slicing non-orthogonal multiple access hybrid spectrum access resource allocation deep reinforcement learning

Improved Na storage and Coulombic efficiency in TiP_(2)O_(7)@C microflowers for sodium ion batteries

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Nano Research 2021年第1期14卷 139-147页

作者： Jun Pan Nana Wang Lili Li Feng Zhang zhenjie cheng Yanlu Li Jian Yang Yitai Qian Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China Shenzhen Research Institute of Shandong University Shenzhen 518000China Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of Wollongong Innovation CampusNorth Wollongong New South Wales 2500Australia State Key Lab of Crystal Materials Shandong UniversityJinan 250100China

Ti-based anode materials in sodium ion batteries have attracted extensive interests due to its abundant resources,low toxicity,easy synthesis and long cycle ***,low Coulombic efficiency and limited specific capacity affect their ***,cubic-phase TiP_(2)O_(7)is examined as anode materials,using in-situ/ex-situ characterization *** is concluded that the redox reactions of Ti4^(+)/Ti^(3+)and Ti^(3+)/Ti^(0)consecutively occur during the discharge/charge processes,both of which are highly *** reactions make the specific capacity of TiP_(2)O_(7)even higher than the case of TiO2 that only contains a simple anion,0^(2-).Interestingly,Ti species participate only one of the redox reactions,due to the remarkable difference in local structures related to the sodiation *** stable discharge/charge products in TiP_(2)O_(7)reduce the side reactions and improve the Coulombic efficiency as compared to T *** features make it a promising Ti-based anode for sodium ion ***,TiP_(2)O_(7)@C microflowers exhibit excellent electrochemical performances,〜109 mAh·g^(-1)after 10,000 cycles at 2 A·g^(-1),or 95.2 mAh·g^(-1)at 10 A·g^(-1).The results demonstrate new opportunities for advanced Ti-based anodes in sodium ion batteries.

关键词： TiP_(2)O_(7) electrochemical reactions anodes sodium ion batteries

Preliminary Results of the Seismicity Monitoring Experiment around the 2019 Mw5.4 Earthquake Epicenter in the Central South China Sea Basin

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Journal of Earth Science 2024年第1期35卷 212-220页

作者： Wenfei Gong Aiguo Ruan Xiongwei Niu zhenjie Wang Pingchuan Tan Xiaodong Wei Wei Wang Zhengyi Tong Liqun cheng Fansheng Kong Shaoping Lu Jianke Fan Weiwei Ding Jinyao Gao Chunguo Yang Jiabiao Li School of Oceanography Shanghai Jiaotong UniversityShanghai 200240China Key Laboratory of submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Zhejiang Earthquake Administration Hangzhou 310013China School of Earth Sciences Zhejiang UniversityHangzhou 310027China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China School of Earth Sciences and Engineering Sun Yat-sen UniversityZhuhai 519082China Institute of Oceanology Chinese Academy of SciencesQingdao 266071China

On September 5,2019,a moderate earthquake of Mw5.4 unexpectedly occurred in the apparently quiescent central basin of the South China *** immediately carried out a seismicity monitoring experiment around the epicenter by using broadband ocean bottom seismometers(OBS)for the following three scientific *** first is knowing the earthquake seismogenic mechanism,fault structure and further *** second is finding the role of the residual spreading ridge playing in earthquake processes and further revealing the deep structures of the ridge directional turning *** third is confirming the existence and significance of the so called“Zhongnan fault”.This paper reports the preliminary results of the first phase *** OBSs were deployed for seismicity monitoring with a duration of 288 days,but only three were ***-earthquakes were firstly detected by an automatic seismic phase picking algorithm and then were verified by analyzing their seismic phases and time-frequency characteristics in detail.A total of 21,68 and 89 microearthquakes were picked out from the three OBSs respectively within the distance of 30 *** dominant frequency of these micro-earthquakes is 12-15 Hz,indicating tectonic *** the first two months after the mainshock the seismicity was relatively stronger,and micro-earthquakes were still occurring occasionally till the end of observation,indicating the epicenter area is *** used Match&Locate method to locate 57 micro-earthquakes *** spatial distribution shows that the seismicity is developed mainly along the NE direction roughly parallel to the residual ridge with depth variations between 10-20 km.

关键词： South China Sea microseismic monitoring earthquakes fault broadband OBS

国际中文教学视域下的范围副词“光”“净”研究

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重庆第二师范学院学报 2024年第2期37卷 33-38,52,127,128页

作者：程文文袁珍婕重庆师范大学文学院重庆401331

范围副词“光”“净”在《国际中文教育中文水平等级标准》中属于中高级学习词汇,对学生的语言能力、目的语文化背景的了解程度以及语境的分析能力等要求较高。通过比较“光”“净”在语义、句法、语用三方面的异同,结合问卷调查结果,... 详细信息

范围副词“光”“净”在《国际中文教育中文水平等级标准》中属于中高级学习词汇,对学生的语言能力、目的语文化背景的了解程度以及语境的分析能力等要求较高。通过比较“光”“净”在语义、句法、语用三方面的异同,结合问卷调查结果,得出目的语知识负迁移是留学生在汉语学习中产生语用偏误的主要原因。因此,要创设合理的情境,强化“光”“净”语言点的对比,在实际运用中弱化目的语的负迁移。

关键词：国际中文教学范围副词光净对比分析教学启示

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企业电气节能措施及效益分析

电气技术 2020年第5期21卷 68-71,102页

作者：成振杰中车株洲斯威铁路产品有限公司湖南株洲412003

本文从电气技术角度出发,结合某企业实际案例对合理选择电源供电电压、选用节能型电气产品、无功功率补偿、谐波治理、按经济电流密度选择导体截面、风机水泵采用变频调速改变流量、高光效光源的选用及自动控制装置的设置等电气节能措... 详细信息

本文从电气技术角度出发,结合某企业实际案例对合理选择电源供电电压、选用节能型电气产品、无功功率补偿、谐波治理、按经济电流密度选择导体截面、风机水泵采用变频调速改变流量、高光效光源的选用及自动控制装置的设置等电气节能措施进行了论述,并计算了相应的节能收益,可供相关人员在电气设计及改造时参考。

关键词：电气节能措施效益

手术室干预性护理防止腹腔镜手术后下肢静脉血栓形成的效果

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双足与保健 2019年第15期28卷 114-115页

作者：程振杰吉林市中心医院手术室

目的分析手术室干预性护理防止腹腔镜手术后下肢静脉血栓形成的效果.方法选取2018年1—12月在该院进行腹腔镜手术的患者6000例,随机划分为2组,3000例作为对照组,对照组采用常规护理;3000例作为观察组,对观察组采用手术室干预性护理,实... 详细信息

目的分析手术室干预性护理防止腹腔镜手术后下肢静脉血栓形成的效果.方法选取2018年1—12月在该院进行腹腔镜手术的患者6000例,随机划分为2组,3000例作为对照组,对照组采用常规护理;3000例作为观察组,对观察组采用手术室干预性护理,实验结束后根据2组患者的满意度及手术成功率进行评分.结果由此观察得出,实验期间,观察组患者的满意度高于对照组且下肢静脉血栓发生率低于对照组.结论手术室干预性护理对腹腔镜手术下肢静脉血栓的形成有控制效果,减少了静脉血栓的形成,并提高了患者的满意度.

关键词：腹腔镜手术后下肢静脉血栓手术室干预性护理效果体会

氟代碳酸乙烯酯添加剂对钠离子电池正极的影响

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物理化学学报 2019年第8期35卷 868-875页

作者：程振杰毛亚云董庆雨金锋沈炎宾陈立桅中国科学技术大学纳米技术与纳米仿生学院合肥230026 中国科学院苏州纳米技术与纳米仿生研究所国际实验室卓越纳米科学中心江苏苏州215123 上海大学材料科学与工程学院上海200444

使用电解液成膜添加剂是一种简单高效的提高电池循环稳定性的方法。氟代碳酸乙烯酯(FEC)的最低未被占据分子轨道(LUMO)能量较低,易被还原,通常被认为是很好的负极成膜添加剂,但因其最高占据分子轨道(HOMO)能量也较低,抗氧化性较好,故其... 详细信息

使用电解液成膜添加剂是一种简单高效的提高电池循环稳定性的方法。氟代碳酸乙烯酯(FEC)的最低未被占据分子轨道(LUMO)能量较低,易被还原,通常被认为是很好的负极成膜添加剂,但因其最高占据分子轨道(HOMO)能量也较低,抗氧化性较好,故其被认为不在正极上发生作用。本工作结合电化学,形貌分析,化学成分表征,原位结构分析等方法研究了FEC添加剂在钠离子电池中的作用。我们发现适量的FEC添加剂不仅可以显著抑制电解液溶剂碳酸丙烯酯(PC)的分解,而且会在正极上形成一层富NaF的保护层,提高循环过程中正极晶格结构稳定性,从而提高电池的循环稳定性。密度泛函理论(DFT)计算表明,FEC之所以能在正极上形成保护层,可能与其容易在正极界面与钠盐阴离子ClO4-结合反应有关。

关键词：电解液添加剂氟代碳酸乙烯酯钠离子电池正极材料原位XRD

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蒸发法处理不同填埋龄垃圾渗滤液中的有机物

环境工程学报 2016年第4期10卷 1777-1782页

作者：李济源程振杰张明曹文平安徽工程大学建筑工程学院芜湖241000 建业住宅集团(中国)有限公司郑州450000 徐州工程学院环境工程学院徐州221008

采用蒸发浓缩法处理早期、中期和晚期垃圾渗滤液,研究渗滤液的COD和TOC的蒸发规律,并对不同填埋龄渗滤液及蒸发分离出的冷凝液进行三维荧光特性分析。结果显示,垃圾渗滤液中蒸发前段COD和TOC的蒸发量较大、蒸发中段大幅度降低、蒸发后... 详细信息

采用蒸发浓缩法处理早期、中期和晚期垃圾渗滤液,研究渗滤液的COD和TOC的蒸发规律,并对不同填埋龄渗滤液及蒸发分离出的冷凝液进行三维荧光特性分析。结果显示,垃圾渗滤液中蒸发前段COD和TOC的蒸发量较大、蒸发中段大幅度降低、蒸发后段又略有升高,冷凝液中COD和TOC呈一定的正相关性(相关系数R=0.999 9);渗滤液DOM组分随填埋时间的推移发生显著变化,易生物降解的色氨酸类物质和与微生物代谢有关的溶解性微生物副产物逐渐转化为大分子、难降解的富里酸类和胡敏酸类物质;随着蒸发过程的进行,色氨酸类物质与溶解性微生物副产物逐渐进入冷凝液,而富里酸类和胡敏酸类物质均不会进入冷凝液,起到明显的分离作用。由此可见,早期垃圾渗滤液主要为小分子类有机物,不适合用蒸发法处理,对主要为大分子、难降解类物质的中晚期垃圾渗滤液较适合采用蒸发法处理。

关键词：垃圾渗滤液蒸发冷凝液直接蒸发蒸发浓缩液三维荧光光谱