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Reflecting Surface-Aided Device-to-Device Communications System

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Journal of Communications and Information Networks 2020年第4期5卷 403-410页

作者： Chiya Zhang Wenyu Chen Chunlong He xingquan li School of Electronic and Information Engineering Harbin Institute of TechnologyShenzhen 518055China.Peng Cheng Laboratory(PCL)Shenzhen 5180523China Guangdong Key Laboratory of Intelligent Information Processing Shenzhen UniversityShenzhen518060China

Intelligent reflecting surface(IRS)is a promising technology for its capability of reflecting the incident signal towards the desired *** can improve the efficiency of wireless communication *** paper introduces IRS into a device-to-device(D2D)communications system to improve the throughput of the D2D *** adopt the block coordinate descent al-gorithm and semidefinite relaxation technique to optimize the beamforming vector,power allocation and phase shift *** results demonstrate that IRS is able to enhance the throughput of the D2D communications system,and the proposed algorithm significantly outper-forms the other benchmark algorithms.

关键词： intelligent reflecting surface device-to-device communications block coordinate descent

聚乙二醇干扰素α-2b联合恩替卡韦治疗HBeAg阳性慢性乙型肝炎患者疗效研究

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实用肝脏病杂志 2024年第5期27卷 677-680页

作者：彭麟杨春李兴泉重庆市綦江区人民医院感染病科 404100 重庆医科大学附属第一医院感染病科

目的观察比较聚乙二醇干扰素α-2b(Peg-IFN-α)联合恩替卡韦治疗血清HBeAg阳性的慢性乙型肝炎(CHB)患者的疗效。方法2019年1月~2022年1月我院收治的279例血清HBeAg阳性的CHB患者,被分为3组,每组93例,分别给予恩替卡韦口服治疗、Peg-IFN... 详细信息

目的观察比较聚乙二醇干扰素α-2b(Peg-IFN-α)联合恩替卡韦治疗血清HBeAg阳性的慢性乙型肝炎(CHB)患者的疗效。方法2019年1月~2022年1月我院收治的279例血清HBeAg阳性的CHB患者,被分为3组,每组93例,分别给予恩替卡韦口服治疗、Peg-IFN-α皮下注射治疗或恩替卡韦联合Peg-IFN-α治疗,均持续治疗48 w,评估疗效。常规检测血清生化学、血清学和病毒学指标。结果在治疗48 w末,联合组HBeAg转阴率和HBeAg血清转换率分别为32.3%和21.5%,Peg-IFN-α治疗组分别为22.6%和15.1%,而恩替卡韦治疗组则无血清HBeAg转阴或HBeAg血清转换者,联合组尚有一些零星的病例发生HBsAg转阴(3.2%)或HBsAg血清转换(2.2%);联合组血清HBsAg和HBeAg水平分别为(1.9±0.3)lg s/co和(0.5±0.1)lg s/co,Peg-IFN-α治疗组分别为(2.2±0.2)lg s/co和(0.6±0.1)lg s/co,均显著低于恩替卡韦治疗组【分别为(3.6±0.2)lg s/co和(1.3±0.2)lg s/co,P<0.05】,而联合组和恩替卡韦治疗组血清HBV DNA载量均显著低于Peg-IFN-α治疗组(P<0.05);联合组血清ALT和AST水平分别为(30.9±4.5)U/L和(28.4±5.3)U/L,恩替卡韦治疗组分别为(31.5±3.6)U/L和(32.3±4.7)U/L,均显著低于Peg-IFN-α治疗组【分别为(48.1±4.2)U/L和(42.7±5.0)U/L,P<0.05】。结论联合应用恩替卡韦和Peg-IFN-α治疗血清HBeAg阳性的CHB患者可能获得更好的血清学转换率,在优势人群可能获得功能性治愈,值得深入研究。

关键词：慢性乙型肝炎聚乙二醇干扰素α-2b 恩替卡韦治疗功能治愈

Large circuit models: opportunities and challenges

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Science China(Information Sciences) 2024年第10期 25-66页

作者： Lei CHEN Yiqi CHEN Zhufei CHU Wenji FANG Tsung-Yi HO Ru HUANG Yu HUANG Sadaf KHAN Min li xingquan li Yu li Yun liANG Jinwei liU Yi liU Yibo liN Guojie LUO Hongyang PAN Zhengyuan SHI Guangyu SUN Dimitrios TSARAS Runsheng WANG Ziyi WANG Xinming WEI Zhiyao XIE Qiang XU Chenhao XUE Junchi YAN Jun YANG Bei YU Mingxuan YUAN Evangeline F.Y.YOUNG Xuan ZENG Haoyi ZHANG Zuodong ZHANG Yuxiang ZHAO Hui-ling ZHEN Ziyang ZHENG Binwu ZHU Keren ZHU Sunan ZOU Huawei Noah’s Ark Lab School of Integrated Circuits Peking University Faculty of Electrical Engineering and Computer Science Ningbo University Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Department of Computer Science and Engineering The Chinese University of Hong Kong School of Integrated Circuits Southeast University Huawei HiSilicon Peng Cheng Laboratory School of Computer Science Peking University School of Microelectronics State Key Laboratory of Integrated Chips and System Fudan University School of Artificial Intelligence Shanghai Jiao Tong University

Within the electronic design automation(EDA) domain, artificial intelligence(AI)-driven solutions have emerged as formidable tools, yet they typically augment rather than redefine existing methodologies. These solutions often repurpose deep learning models from other domains, such as vision, text, and graph analytics, applying them to circuit design without tailoring to the unique complexities of electronic circuits. Such an “AI4EDA” approach falls short of achieving a holistic design synthesis and understanding,overlooking the intricate interplay of electrical, logical, and physical facets of circuit data. This study argues for a paradigm shift from AI4EDA towards AI-rooted EDA from the ground up, integrating AI at the core of the design process. Pivotal to this vision is the development of a multimodal circuit representation learning technique, poised to provide a comprehensive understanding by harmonizing and extracting insights from varied data sources, such as functional specifications, register-transfer level(RTL) designs, circuit netlists,and physical layouts. We champion the creation of large circuit models(LCMs) that are inherently multimodal, crafted to decode and express the rich semantics and structures of circuit data, thus fostering more resilient, efficient, and inventive design methodologies. Embracing this AI-rooted philosophy, we foresee a trajectory that transcends the current innovation plateau in EDA, igniting a profound “shift-left” in electronic design methodology. The envisioned advancements herald not just an evolution of existing EDA tools but a revolution, giving rise to novel instruments of design-tools that promise to radically enhance design productivity and inaugurate a new epoch where the optimization of circuit performance, power, and area(PPA) is achieved not incrementally, but through leaps that redefine the benchmarks of electronic systems' capabilities.

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某特种产品首件检验与首件鉴定的区别与应用

船舶标准化工程师 2024年第3期57卷 6-9页

作者：邹永振李兴泉杨纯辉空军装备部驻某军事代表局沈阳110083

为提高某特种产品的可靠性,预防质量缺陷,提升科研生产效率,对首件鉴定和首件检验进行对比,对首件检验和首件鉴定在科研生产过程中存在的问题进行分析,并提出针对性应用建议。研究成果可为特种产品质量控制提供一定参考。

关键词：特种产品科研生产首件检验首件鉴定

Power Minimization for the IRS-Aided SWIPT Secure Communication System with Imperfect Cascaded Channel

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Journal of Communications and Information Networks 2023年第2期8卷 133-140页

作者： Chunlong He Shuqiong Xu Gongbin Qian xingquan li Chiya Zhang Guangdong Key Laboratory of Intelligent Information Processing Shenzhen UniversityShenzhen 518060China School of Microelectronics Shenzhen Institute of Information TechnologyShenzhen 518000China School of Electronic and Information Engineering Harbin Institute of TechnologyShenzhen 518055China National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China Peng Cheng Laboratory(PCL) Shenzhen 5180523China

Intelligent reflecting surface(IRS)-assisted simultaneous wireless information and power transfer(SWIPT)is a promising technology for prolonging the lifetime of the users and improving system ***,it is challenging to obtain the perfect channel state information(CSI)at the base station(BS)due to the lack of radio frequency(RF)chains at the IRS,which becomes even harder when eavesdroppers(Eves)*** this paper,we study the power issues in the IRS-aided SWIPT system under the imperfect CSI of BS-IRS-Eves *** aim to minimize the transmitting power at the BS by jointly designing transmit beamforming and reflective beamforming with subject to the rate outage probability constraints of the Eves,the energy harvesting constraints of the energy receivers(ERs),and the minimum rate constraints of the information receivers(IRs).We use Bernstein-type inequality to solve the rate outage probability ***,the formulated nonconvex problem can be efficiently tackled by employing alternating optimization(AO)combined with semidefinite relaxation(SDR)and penalty convex-concave procedure(CCP).Numerical results demonstrate the effectiveness of the proposed scheme.

关键词： IRS SWIPT secure communication AO

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厨房吊柜对天然气泄漏扩散影响的模拟研究

煤气与热力 2024年第4期44卷 V0007-V0013页

作者：徐永慧李兴泉姜懿芸李泽文山东建筑大学热能工程学院山东济南250101 山东省能源建筑设计院设计一处山东济南250101

以居民有吊柜厨房与无吊柜厨房为研究对象,对天然气泄漏扩散的体积分数分布情况进行模拟研究。对比分析厨房吊柜对天然气扩散的影响,监测甲烷体积分数变化,给出有吊柜厨房报警器安装位置建议。吊柜的存在改变了天然气扩散的路径,天然气... 详细信息

以居民有吊柜厨房与无吊柜厨房为研究对象,对天然气泄漏扩散的体积分数分布情况进行模拟研究。对比分析厨房吊柜对天然气扩散的影响,监测甲烷体积分数变化,给出有吊柜厨房报警器安装位置建议。吊柜的存在改变了天然气扩散的路径,天然气在吊柜下方聚集并沿吊柜向天花板扩散。在泄漏前60 min,有吊柜厨房整体甲烷体积分数高于无吊柜厨房,吊柜使危险性有所增加。有吊柜厨房天然气报警器优先安装在离燃气设施较近的吊柜侧面位置,在符合安装要求的情况下,尽量将报警器下移靠近软管接头等易泄漏位置。吸顶安装报警器选择在灶具前方与吊柜水平距离25 cm处。

关键词：厨房吊柜天然气泄漏扩散数值模拟燃气报警器

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A stepwise approach to enhancing flotation of low-grade zinnwaldite through the cationic/DL-2-octanol/anionic reagent combinations: Behavior and mechanism analysis

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International Journal of Mining Science and Technology 2024年第6期34卷 881-891页

作者： Zhonghua Xue Yali Feng Haoran li Jinrong Ju xingquan Du School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

In order to alleviate the pressure on the supply of lithium resources, this research proposes the use of binary/ternary collectors with high selectivity and collecting ability to enhance the flotation purification of low-grade zinnwaldite ore. The binary collector is a mixture of dodecylamine polyoxyethylene ether and DL-2-octanol. A binary collector is added first, followed by sodium oleate, known as a ternary collector. Under acidic conditions, the recovery of li2O in the concentrate was increased by 8.26% with the binary collector and 13.70% with the ternary collector, compared to the dodecylamine polyoxyethylene ether. The binary collector enhanced the dispersibility of the single collector, while co-adsorption strengthened the hydrophobic nature of the zinnwaldite surface. Consequently, zinnwaldite particles,after the application of binary collector, displayed inter-particle flocculation and attachment to bubbles within 60×10^(-9)m compared to other particles. Ternary collector exhibited the capacity to lower critical micelle concentration and surface tension, subsequently inducing a denser and thicker hydrophobic layer through electrostatic forces, hydrophobic interactions, and chemical reactions. The objective of this research is to facilitate the recovery of lithium resources from low-grade ores in order to meet the needs of sustainable development.

关键词： Zinnwaldite Molecular dynamics simulation Flotation Ternary collector Extended DLVO theory

微转速差双转子系统对自动液力变速器车型怠速抽动的影响研究

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汽车工程师 2024年第9期 8-12,20页

作者：李兴泉付江华贾小利邓仁伟李宏成魏宏杰重庆长安汽车股份有限公司汽车工程研究总院重庆401120 重庆理工大学重庆400054 重庆交通大学重庆400074

为分析液力变矩器与曲轴组成的微转速差双转子系统对自动液力变速器(AT)车型怠速抽动的影响,通过对双转子系统动不平衡耦合激励力进行希尔伯特变换(Hilbert Transform),揭示出部件拍振是导致有规律怠速抽动的根本原因,其抽动激励幅值最... 详细信息

为分析液力变矩器与曲轴组成的微转速差双转子系统对自动液力变速器(AT)车型怠速抽动的影响,通过对双转子系统动不平衡耦合激励力进行希尔伯特变换(Hilbert Transform),揭示出部件拍振是导致有规律怠速抽动的根本原因,其抽动激励幅值最大值为激励力之和,抽动间隔频率为激励力频率之差。建立包括发动机、变速器、悬置等系统的机械系统动力学自动分析(ADAMS)模型并进行仿真,结果表明,动力总成垂向刚体模态频率与激励频率越接近,液压悬置垂向一阶动刚度越大,振动幅值越大。因此,可通过动力总成Z向模态频率与曲轴动不平衡激励频率间的避频设计、降低液压悬置垂向动刚度、提高悬置系统的隔振性能等方式改善怠速抽动。

关键词：微转速差双转子系统自动变速器怠速抽动液力变矩器发动机

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“PAD+OBE”驱动下本科课堂教学探索与实践——以“大气污染控制工程”为例

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高等理科教育 2024年第4期 57-64页

作者：王锋文谢东杭李星权陈结陈静杨永川重庆大学环境与生态学院重庆400044 重庆大学资源与安全学院重庆400044

“大气污染控制工程”是环境科学与工程专业的一门核心课程。为解决教学中现有问题,以充分调动学生主体性和积极性,采用对分课堂(PAD)和成果导向教育(OBE)混合教学,以期实现教学目标。通过重构教学体系,融入思政教育,优化反馈机制,构建... 详细信息

“大气污染控制工程”是环境科学与工程专业的一门核心课程。为解决教学中现有问题,以充分调动学生主体性和积极性,采用对分课堂(PAD)和成果导向教育(OBE)混合教学,以期实现教学目标。通过重构教学体系,融入思政教育,优化反馈机制,构建完整的教学闭环,有效提升了教学效果。在课程实践中,强化学生知识体系,提高创新协作能力,从而培养高素质大气环境类人才,满足地方和国家层面大气污染防控战略需求。该教学模式为厘清大气污染成因及治污提供基础,也为推进本科“双万计划”提供经验及借鉴范例。

关键词： PAD教学模式 OBE教学模式本科教学大气污染控制工程