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论当前美国政府的人工智能监管政策

国际观察 2024年第4期 31-57页

作者：邢亚杰戚凯清华大学社会科学学院北京100084 山东大学东北亚学院威海264209

快速迭代的人工智能滋生诸多风险挑战,人工智能监管随之进入新时期,成为全球数字竞争的新高地。人工智能监管事关国际权力博弈与规范塑造,美国高度重视这一议题。尤其自生成式人工智能快速发展以来,美国本土安全稳定受到冲击,既有人工... 详细信息

快速迭代的人工智能滋生诸多风险挑战,人工智能监管随之进入新时期,成为全球数字竞争的新高地。人工智能监管事关国际权力博弈与规范塑造,美国高度重视这一议题。尤其自生成式人工智能快速发展以来,美国本土安全稳定受到冲击,既有人工智能全球领先优势受到侵蚀,为此拜登政府不断强化人工智能监管。拜登政府面对碎片化、地方化的国内人工智能监管方式,致力于在国内推进联邦层级的总体性监管,制定安全可靠的原则目标、明确高级别机构的对应监管、聚焦人工智能核心企业、关注隐私与公平等重大风险;在国际层面则依托国际机制宣扬人工智能监管的美式观念与美式方案,加强盟友间的协调与拉拢,强化对中国监管努力的遏制打压与“污名化”行动。然而,拜登政府的努力却面临重重制约。在国内层面,各种制约因素阻滞了联邦政府相关政策的推进;在国际层面,由于其政策思路对抗色彩浓厚、独霸私心严重,且缺乏破解结构性矛盾的真正方略,因此实施前景存在较强不确定性。

关键词：人工智能风险监管拜登政府数字竞争全球治理

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高超声速飞行器进气道压缩面逆向设计方法

航空动力学报 2015年第6期30卷 1357-1365页

作者：岳晓奎齐凯华西北工业大学航天学院西安710072

针对高超声速飞行器进气道压缩面问题,首先研究了激波理论的逆向算法,以此为基础提出了进气道的等强度和等熵压缩面的逆向设计方法,并采用此方法设计了以进气道出口气流参数为设计参数的高超声速飞行器进气道压缩面,然后对两种压缩面进... 详细信息

针对高超声速飞行器进气道压缩面问题,首先研究了激波理论的逆向算法,以此为基础提出了进气道的等强度和等熵压缩面的逆向设计方法,并采用此方法设计了以进气道出口气流参数为设计参数的高超声速飞行器进气道压缩面,然后对两种压缩面进行了性能分析和数值仿真.结果表明:通过逆向设计方法设计进气道压缩面是可行的,其相对于传统方法耗时大大减少;理论计算表明相同设计条件下两压缩面几何参数基本一致,而来流参数也基本不变,设计点下等熵压缩面总压恢复系数高出等强度压缩面6.3%.数值仿真验证了该方法的可行性并研究了非设计状态下两种压缩面的各项性能参数,同时对比了不同马赫数下进气道内部波系分布和气流均匀性.

关键词：高超声速压缩面设计逆向运算等强度压缩面等熵压缩面

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带摩擦阻尼装置系统振动响应分析方法研究

航空动力学报 2006年第1期21卷 161-167页

作者：漆文凯高德平南京航空航天大学能源与动力学院江苏南京210016

引入整体-局部一体化滑动模型,提出了带摩擦阻尼装置平板叶片的振动响应分析方法,通过与实验结果对比,验证了分析方法的有效性;定义了无量纲正压力,通过不同无量纲正压力下平板叶片的振动响应分析,获得了振动响应与无量纲正压力的关系... 详细信息

引入整体-局部一体化滑动模型,提出了带摩擦阻尼装置平板叶片的振动响应分析方法,通过与实验结果对比,验证了分析方法的有效性;定义了无量纲正压力,通过不同无量纲正压力下平板叶片的振动响应分析,获得了振动响应与无量纲正压力的关系曲线。计算结果表明:在局部滑动阶段摩擦阻尼对系统振动的抑制仍然有明显的效果,因此在摩擦阻尼减振分析中,引入局部滑动模型具有重要意义,并可通过无量纲正压力对阻尼器的参数进行优化,使系统在共振时的响应达到最小。

关键词：航空、航天推进系统干摩擦阻尼局部滑动整体滑动振动响应分析

Research of Intelligent Coordinated Control in Indoor Environment Based on MAS

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Research of Intelligent Coordinated Control in Indoor Enviro...

Design of TE_(01δ) Test Probe for Measuring the Microwave Surface Resistance of HTS Thin Film

第26届中国控制与决策会议

作者： Yifei Chen kai qi Baicheng Liu Ge Li qiaoxue Dong College of Information ＆ Electrical Engineering of China Agricultural University

ISBN: (纸本)9781479937097

More and more intelligent buildings have been built in the world during last 10 years,but,according to application investigation in China,the intelligent level was not high and building control had not achieved the valued result,especially in intelligent control operation and energy saving for *** BAS（Building Automation System）,there are many sub-systems integrated together with multiple purposes,and if whole system of BAS is intelligent,then every sub-system should be *** to achieving the intelligent system special on control algorithms and its realization should be paid in practice,this paper discusses the intelligent method using MAS（Multi-Agent system） applied in BAS,and researches of intelligent coordinated control for indoor environment based on *** addition,as lighting agent,an indoor lighting intelligent control sub-system is *** this integrated system,the indoor comfortable illuminance can be intelligently controlled by Venetian blind turning and the assistance of indoor *** the other hand,for requirement of control network as agent,based on the 1-wire technology,the system has realized the function of addressing control for lamps and Venetian blind.

关键词： MAS Coordinated control Indoor lighting control Agent

来源： cnki会议评论

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Journal of Electronic Science and Technology of China 2008年第2期6卷 212-215页

作者： Cheng Zeng Zheng-Xiang Luo qi-Shao Zhang kai Yang School of Optoelectronic Information University of Electronic Science and Technology of China Chengdu 610054 China

A new TEo1δ test probe with proper transmission factor is fabricated for the measurement of surface resistance of high temperature superconductor （HTS） thin film. Coupling holes instead of coupling loops are used in the probe for its easier machining and relatively low loss. Two 6 mm × 3 mm × 8 mm dielectric waveguides, one side of them is coated by silver, are used for coupling. The measurement result of S21 agrees well with the simulation because the size of the probe can be rigidly controlled by machine. The microwave surface resistance of four YBCO/MgO films are measured at 77 K and 12 GHz and scaled to 10 GHz according to thef2 rule. The average surface resistance of four HTS thin fdms is 0.38 mΩ, the standard deviation and relative standard deviation of one single HTS thin film are 0.009 mΩ and 2.4%, respectively.

关键词： High temperature superconductor,surface resistance surface resistance measurement.

Improvement of high-temperature strength of 6061 Al matrix composite reinforced by dual-phased nano-AlN and submicron-Al_(2)O_(3)particles

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Transactions of Nonferrous Metals Society of China 2022年第10期32卷 3197-3211页

作者： Ke-wei XIE Jin-feng NIE kai-qi HU Xia MA Xiang-fa LIU Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials Ministry of EducationShandong UniversityJinan 250061China Nano and Heterogeneous Materials Center School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Mechanical Engineering Shandong University of TechnologyZibo 255000China

Nano-AlN and submicron-Al_(2)O_(3) particles were simultaneously utilized in a 6061 Al matrix composite to improve the high-temperature *** to the SEM and TEM characterization,nano-AlN and submicron-Al_(2)O_(3) particles are uniformly distributed in the Al *** hardness results indicate that different from the traditional 6061 Al matrix alloy,the aging kinetics of the composite is obviously accelerated by the reinforcement *** T6-treated composite exhibits excellent tensile properties at both room temperature and elevated *** at 350℃,the T6-treated composite not only has a high yield strength of 121 MPa and ultimate tensile strength of 128 MPa,but also exhibits a large elongation of 11.6%.Different strengthening mechanisms of nano-AlN and submicron-Al_(2)O_(3) particles were also discussed in detail.

关键词： 6061 Al matrix composite nano-AlN particles submicron-Al_(2)O_(3)particles high-temperature strength

Delayed callose degradation restores the fertility of multiple P/TGMS lines in Arabidopsis

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Journal of Integrative Plant Biology 2022年第3期64卷 717-730页

作者： kai-qi Wang Ya-Hui Yu Xin-Lei Jia Si-Da Zhou Fang Zhang Xin Zhao Ming-Yue Zhai Yi Gong Jie-Yang Lu Yuyi Guo Nai-Ying Yang Shui Wang Xiao-Feng Xu Zhong-Nan Yang College of Biological and Environmental Engineering Jingdezhen UniversityJiangxi 333000China Shanghai Key Laboratory of Plant Molecular Sciences College of Life SciencesShanghai Normal UniversityShanghai 200234China

Photoperiod/temperature-sensitive genic male sterility(P/TGMS)is widely applied for improving crop *** investigations using the reversible male sterile(rvms)mutant showed that slow development is a general mechanism for restoring fertility to P/TGMS lines in *** this work,we isolated a restorer of rvms–2(res3),as the male sterility of rvms–2 was rescued by *** analysis and molecular cloning show that a point mutation in UPEX1 l in res3 leads to delayed secretion of callase A6 from the tapetum to the locule and tetrad callose wall *** mobility shift assay and chromatin immunoprecipitation analysis demonstrated that the tapetal transcription factor ABORTED MICROSPORES directly regulates UPEX1 expression,revealing a pathway for tapetum secretory *** degradation of the callose wall in the transgenic line eliminated the fertility restoration effect of *** fertility of multiple known P/TGMS lines with pollen wall defects was also restored by *** propose that the remnant callose wall may broadly compensate for the pollen wall defects of P/TGMS lines by providing protection for pollen formation.A cellular mechanism is proposed to explain how slow development restores the fertility of P/TGMS lines in Arabidopsis.

关键词： callose degradation fertility restoration pollen wall pollen development P/TGMS

Development of a High-throughput Sequencing Platform for Detection of Viral Encephalitis Pathogens Based on Amplicon Sequencing

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Biomedical and Environmental Sciences 2024年第3期37卷 294-302页

作者： ZHANG Ya Li SU Wen Zhe WANG Rui Chen LI Yan ZHANG Jun Feng LIU Sheng Hui HU Dan He XU Chong Xiao YIN Jia Yu YIN qi kai HE Ying LI Fan FU Shi Hong NIE kai LIANG Guo Dong TAO Yong XU Song Tao MA Chao Feng WANG Huan Yu Shaanxi University of Chinese Medicine Xianyang 712000ShaanxiChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Guangzhou Center for Disease Control and Prevention Guangzhou 510000GuangdongChina Shandong Center for Disease Control and Prevention Jinan 250000ShandongChina Department of Ophthalmology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Xi'an Center for Disease Control and Prevention Xi’an 710054ShaanxiChina

Objective Viral encephalitis is an infectious disease severely affecting human *** is caused by a wide variety of viral pathogens,including herpes viruses,flaviviruses,enteroviruses,and other *** laboratory diagnosis of viral encephalitis is a worldwide ***,high-throughput sequencing technology has provided new tools for diagnosing central nervous system ***,In this study,we established a multipathogen detection platform for viral encephalitis based on amplicon *** We designed nine pairs of specific polymerase chain reaction(PCR)primers for the 12 viruses by reviewing the relevant *** detection ability of the primers was verified by software simulation and the detection of known positive *** sequencing was used to validate the samples,and consistency was compared with Sanger *** The results showed that the target sequences of various pathogens were obtained at a coverage depth level greater than 20×,and the sequence lengths were consistent with the sizes of the predicted *** sequences were verified using the National Center for Biotechnology Information BLAST,and all results were consistent with the results of Sanger *** Amplicon-based high-throughput sequencing technology is feasible as a supplementary method for the pathogenic detection of viral *** is also a useful tool for the high-volume screening of clinical samples.

关键词： Viral encephalitis Amplicon sequencing High-throughput sequencing Multipathogen detection

基于Timoshenko梁理论的钢-混组合梁动力刚度矩阵法

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工程力学 2022年第8期39卷 149-157页

作者：孙琪凯张楠刘潇北京交通大学土木建筑工程学院北京100044

基于Timoshenko梁理论提出了适用于分析钢-混组合梁自振特性的动力刚度矩阵法,该计算模型中考虑了钢-混结合面剪切滑移、剪切变形和转动惯量的综合影响。动力刚度矩阵推导过程中未引入近似位移场或力场,因此,计算结果是准确的。与其他Ti... 详细信息

基于Timoshenko梁理论提出了适用于分析钢-混组合梁自振特性的动力刚度矩阵法,该计算模型中考虑了钢-混结合面剪切滑移、剪切变形和转动惯量的综合影响。动力刚度矩阵推导过程中未引入近似位移场或力场,因此,计算结果是准确的。与其他Timoshenko梁模型最大的不同是假设混凝土子梁和钢梁分别具有独立的剪切角,这个假设更加符合组合梁的实际运动,因此,计算结果更加准确。与已发表文章中的试验梁频率计算结果作对比分析;并讨论了不同剪力键刚度、跨高比时,剪切变形和转动惯量对钢-混组合梁自振频率的影响。结果表明:相对于已有的Euler-Bernoulli组合梁、子梁转角相同假设的Timoshenko组合梁模型,文中计算方法具有更高的计算精度,尤其是对于高阶频率;频率越高、剪力键刚度越大或跨高比越小,Euler-Bernoulli组合梁模型计算结果误差越大;对于1阶、2阶和3阶频率,高跨比分别大于10、18和25后,Euler-Bernoulli组合梁模型计算结果误差小于5%。

关键词：桥梁工程动力刚度矩阵法 Timoshenko梁理论子梁独立剪切角跨高比

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