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Wind-induced vibration control of Hefei TV tower with fluid viscous damper

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Frontiers of Structural and Civil Engineering 2009年第3期3卷 249-254页

作者： Zhiqiang ZHANG Aiqun LI Jianping HE jianlei wang College of Civil Engineering Southeast UniversityNanjing 210096China Design Institute State Administration of Radio Film&TVBeijing 100045China

The Hefei TV tower is taken as an analytical case to examine the control method with a fluid viscous damper under wind load ***,according to the random vibration theory,the effect of fluctuating wind on the tower can be modeled as a 19-dimensional correlated random process,and the wind-induced vibration analysis of the tower subjected to dynamic wind load was further *** the basis of the others'works,a bi-model dynamic model is ***,a dynamic model is proposed to study the wind-induced vibration control analysis using viscous fluid dampers,and the optimal damping coefficient is obtained regarding the wind-induced response of the upper turret as optimization *** results show that the maximum peak response of the tower under dynamic wind load is far beyond the allowable range of the *** wind-induced responses and the wind vibration input energy of the tower are decreased greatly by using a fluid viscous damper,and the peak acceleration responses of the upper turret is reduced by 43.4%.

关键词： high-rise structure wind-induced response fluid viscous damper vibration control

A high level of secreted phosphoprotein 1 is associated with macrophage infiltration and poor prognosis in hepatocellular carcinoma

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iLIVER 2023年第1期2卷 26-35页

作者： Jianping Song Jingxian Sun Shuhong Jing Tingxiao Zhang jianlei wang Yanfeng Liu Department of Hepatobiliary Surgery Second Hospital of Shandong UniversityJinan 250012China Department of Surgery Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinan 250012China Department of Organ Transplantation Qilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012China Department of Hepatobiliary Surgery Qilu Hospital of Shandong UniversityJinan 250012China

Background and aims:Secreted phosphoprotein 1(SPP1)functions in several physiological *** role of SPP1 expression in the prognosis and tumor immunity of hepatocellular carcinoma(HCC)is *** aim of this study was to investigate the expression pattern of SPP1 in HCC and its correlation with prognosis and tumor ***:Clinical and gene expression data of The Cancer Genome Atlas-liver hepatocellular carcinoma(LIHC)cohort and 11 other HCC datasets were *** Kaplan–Meier method and Cox regression analysis were used to analyze the prognostic value of *** DESeq2 package in R was used to analyze SPP1-related *** Ontology analysis and gene set enrichment analysis were used to determine the biological function of SPP1 in *** single sample Gene Set Enrichment Analysis(ssGSEA)method was used to analyze the immune infiltrates of *** human methylation 450 data and level 3 HTSeq-FPKM data from The Cancer Genome Atlas-LIHC were used to analyze the effects of DNA methylation level on SPP1 ***:SPP1 was overexpressed in HCC and correlated with T stage,histological grade,adjacent hepatic tissue inflammation,and vascular invasion in *** analysis of survival rates indicated that high SPP1 levels were associated with poor overall survival in *** analysis showed that SPP1 is related to tumor immunity,especially macrophage *** demethylation of the promoter region is one of the mechanisms underlying the increase of SPP1 in ***:Our results indicate that SPP1 is an independent prognostic factor for HCC and is correlated with the clinical features and macrophage infiltration in HCC.

关键词： Hepatocellular carcinoma Secreted phosphoprotein 1 Prognosis Promoter demethylation Tumor immunity

High-efficiency tandem Ho:YAG single-crystal fiber laser delivering more than 100 W output power

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High Power Laser Science and Engineering 2024年第4期12卷 36-40页

作者： jianlei wang Zihao Tong Changsheng Zheng Tianyi Du Yongguang Zhao Chun wang Key Laboratory of Laser&Infrared System Ministry of EducationShandong UniversityQingdaoChina Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry Jiangsu Normal UniversityXuzhouChina

We report on a high-efficiency,high-power tandem Ho:YAG single-crystal fiber(SCF)laser in-band pumped by a Tm-doped fiber laser at 1907 *** addition to the uniform heat distribution resulting from the large surface-to-volume ratio of this fiber-like thin-crystal rod,the long gain region provided by the tandem layout of two SCFs enables high lasing efficiency and power handling *** than 100 W output power is achieved at 2.1μm,corresponding to a slope efficiency of 70.5%and an optical-to-optical efficiency of 67.6%.To the best of our knowledge,this is the highest output power and efficiency ever reported from SCF lasers in the 2-μm spectral range.

关键词： high efficiency Ho:YAG power handling capability single-crystal fiber

1.5 J high-beam-quality Nd:LuAG ceramic active mirror laser amplifier

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Chinese Optics Letters 2020年第2期18卷 48-50页

作者： jianlei wang Kaiqi Zhao Tao Feng Xiaolei Zhu Weibiao Chen Key Laboratory of Space Laser Communication and Detection Technology Chinese Academy of SciencesShanghai 201800China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques Shanghai 201800China Key Laboratory of Materials for High Power Laser Chinese Academy of SciencesShanghai 201800China

A 1.5 J Nd:LuAG ceramic active mirror laser amplifier with a high beam quality is demonstrated in which a 0.8%(atomic fraction)Nd-doped Nd:LuAG ceramic disk with a diameter of 64 mm and a thickness of 5.5 mm is used as a laser gain medium.A maximum single-pass small-signal gain of 2.59 is measured when the pump energy is 11.5 J,with an injected seed energy of 0.4 J;a maximum output energy of 1.5 J is obtained at the repetition rate of 10 Hz.A far-field beam spot 1.25 times the diffraction limit(DL)is achieved by using a stimulated Brillouin scattering phase conjugation mirror(SBS-PCM)for wavefront correction.

关键词： high energy lasers disk laser amplifiers Nd:LuAG ceramic high beam quality

“流量”作为一种技术环境:中立逻辑与本土实践

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学习与实践 2024年第7期 21-28页

作者：王建磊深圳大学传播学院广东深圳518060

从“数字化生存”到“数字化繁荣”,流量成为当今最突出的技术环境表征与具象化存在,既推动“物的消费”向“符号消费”转型,也促使信息数据和货币资本无需中介地转化,在影响个体行动与社会秩序重构的过程中成为互联网场域的关键通货。... 详细信息

从“数字化生存”到“数字化繁荣”,流量成为当今最突出的技术环境表征与具象化存在,既推动“物的消费”向“符号消费”转型,也促使信息数据和货币资本无需中介地转化,在影响个体行动与社会秩序重构的过程中成为互联网场域的关键通货。流量在塑造了一种新的社会整合及运行秩序的同时,也带来了数字资本主义的新批判路径,即量化一切所带来的生产性权力的隐喻和消极后果。然而,流量首先是技术的产物,也是互联网商业体系和货币流通亟需的新标准。以技术中立的逻辑重新审视流量,在与流量必然性共存的前提下,需要顶层设计来破除商业平台的流量收割,以彰显社会公器之益。

关键词：流量平台技术中立公共价值

如何满足受众:日常化网络直播的技术与内容考察

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国际新闻界 2018年第12期40卷 19-31页

作者：王建磊深圳大学传播学院

已有研究表明网络视频直播在多个层面满足了受众心理所需,然而,这些满足是如何发生的?针对这一问题,本文以日常化直播作为研究对象,从技术和内容两个路径予以阐释:在技术视角下,网络直播意味着一个发达的传播与反馈系统,营造了"同步性... 详细信息

已有研究表明网络视频直播在多个层面满足了受众心理所需,然而,这些满足是如何发生的?针对这一问题,本文以日常化直播作为研究对象,从技术和内容两个路径予以阐释:在技术视角下,网络直播意味着一个发达的传播与反馈系统,营造了"同步性、同一感"的独特体验;在文本样态上,研究通过数据挖掘工具搜集了相关报道文本,采用范畴化编码提炼出"生活流、猎奇、功用"三个主要类别,并从理论上赋予其满足受众的依据。最后,技术与内容的融合形成了具备"仪式感"、"既视感"和"同步记录"特征的场景系统,受众正是沉浸其中才获得了不同程度的满足感。

关键词：视频直播日常化技术场景系统

A high energy nanosecond cryogenic cooled Yb:YAG active-mirror amplifier system

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High Power Laser Science and Engineering 2014年第3期2卷 46-49页

作者： Xiaojin Cheng jianlei wang Zhongguo Yang Jin Liu Lei Li Xiangchun Shi Wenfa Huang Jiangfeng wang Weibiao Chen Shanghai Key Laboratory of All Solid-state Laser and Applied Techniques Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences The Joint Laboratory for High Power Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

A diode-pumped master oscillator power amplifier system based on a cryogenic Yb:YAG active-mirror laser has been *** performances of the laser amplifier at low temperature and room temperature have been investigated theoretically and experimentally.A maximum output energy of 3.05 J with an optical-to-optical efficiency of 14.7% has been achieved by using the master amplifier system.

关键词： diode-pumped solid-state laser Yb:YAG

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当下中国电影中的中年人形象与受众认知

当代电影 2018年第9期 136-139页

作者：王建磊深圳大学传媒与文化发展研究中心副研究员518060

仍然渴望青春,但受困于身体、家庭和伦理边界,这是中年人的本体困境。本文以此为逻辑起点,归纳出再度追梦、重启人生、迷失情爱和无畏抗争四类中年人的影视形象;然后从受众的角度,以情绪认知、观念认知和策略认知三个维度对中年人的影... 详细信息

仍然渴望青春,但受困于身体、家庭和伦理边界,这是中年人的本体困境。本文以此为逻辑起点,归纳出再度追梦、重启人生、迷失情爱和无畏抗争四类中年人的影视形象;然后从受众的角度,以情绪认知、观念认知和策略认知三个维度对中年人的影视形象进行接受式解构;最后本文指出或可从"父权演变、父子关系"的向度去探索解决中年危机的路径,尤其期待国产电影在正确引导人们的精神危机并提供相应出路方面做出更多努力。

关键词：中年危机中年电影形象认知

High-beam-quality, 5.4 J, 5 Hz diode-pumped Nd:YAG active mirror laser amplifier

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Chinese Optics Letters 2018年第12期16卷 42-44页

作者： Jing Liu Lei Li Xiangchun Shi Rufeng Chen jianlei wang Weibiao Chen Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

A high-beam-quality diode-pumped neodymium-doped yttrium aluminum garnet(Nd:YAG) active mirror laser amplifier was demonstrated. The size of the Nd:YAG crystal was 48 mm × 42 mm × 11 mm with 0.6 at.% Nd doped. When the pump energy was 26.8 J and the input energy was 0.3 J, the output pulse energy reached 5.4 J, and the pulse width of 11.3 ns at a 5 Hz repetition rate was obtained for the two gain modules in three-pass amplification, with corresponding optical-to-optical efficiency of 21.2%. The beam quality was measured as M_x^2=2.48 and M_y^2=2.43 in horizontal and vertical directions, respectively.

关键词： YAG Hz diode-pumped Nd:YAG active mirror laser amplifier High-beam-quality Nd