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构建数智安全新格局保障新发展格局

2002-2022年中国籼稻品质的时空分布和发展状况

中国科学院院刊 2024年第1期39卷 131-142页

作者：杨晓光吴杨张兴伟郑晓龙中国科学院数学与系统科学研究院北京 100190 中国科学院大学经济与管理学院北京 100190 中国科学院自动化研究所多模态人工智能系统全国重点实验室北京 100190 中国科学院大学人工智能学院北京 100190 中国科学院自动化研究所多模态人工智能系统全国重点实验室北京 100190

随着党的二十大以后我国进入新发展时代,数智技术的快速发展和广泛应用激活了新一轮经济发展潜力,也给经济社会发展带来了新的安全挑战.文章首先分析了国际与国内新形势下新发展格局的特点,剖析了新发展格局下数智安全风险挑战,涉及微... 详细信息

随着党的二十大以后我国进入新发展时代,数智技术的快速发展和广泛应用激活了新一轮经济发展潜力,也给经济社会发展带来了新的安全挑战.文章首先分析了国际与国内新形势下新发展格局的特点,剖析了新发展格局下数智安全风险挑战,涉及微观层面的技术安全、个人安全,以及宏观层面的经济安全、社会安全、文化安全.在此基础之上,文章提出了构建数智安全新格局的基本方法论,给出了一个涵盖数智技术自身安全、保障数智安全的数智技术、数智安全法律法规和政策3个方面数智安全新格局的基本架构.最后,文章探讨了数智安全新格局和新发展格局之间的辩证与螺旋式协同演进关系,为在新的时代保证经济社会的康持续发展提供指导.

关键词：数智安全数智安全新格局新发展格局安全与发展

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浙江大学学报（农业与生命科学版） 2024年第3期50卷 418-430页

作者：邵雅芳郑欣朱大伟章林平牟仁祥郑小龙陈铭学中国水稻研究所/农业农村部稻米及制品质量检验测试中心浙江杭州311400

为充分了解我国籼稻品质的时空分布和发展状况,收集2002-2022年种植于安徽、重庆、福建、广东、广西、河南、湖北、湖南、江苏、江西、四川、浙江等12个省级行政区共70 146份籼稻样品,检测并分析稻米的粒长、整精米率、垩白度、透明度... 详细信息

为充分了解我国籼稻品质的时空分布和发展状况,收集2002-2022年种植于安徽、重庆、福建、广东、广西、河南、湖北、湖南、江苏、江西、四川、浙江等12个省级行政区共70 146份籼稻样品,检测并分析稻米的粒长、整精米率、垩白度、透明度、表观直链淀粉含量、碱消值、胶稠度和蛋白质含量等指标,结合主成分分析阐述我国籼稻品质的发展趋势。结果显示:河南和江苏的籼稻粒长相对较短,整精米率相对较高;广东和江苏的籼稻垩白度较低,1级透明度占比较高;浙江、江西和湖南的籼稻表观直链淀粉含量较高且品种间的差异较大;江苏、重庆和广东的籼稻碱消值较高。近10年来,籼稻粒长逐年变长,碱消值逐年变大,垩白度、透明度、表观直链淀粉含量和蛋白质含量逐渐下降,品种间的差异也越来越小。总体来看,近21年来,我国籼稻品质得到了明显的提升,向着长粒、外观品质优和食味佳的方向发展。

关键词：加工品质外观品质表观直链淀粉碱消值胶稠度蛋白质

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脱轨系数数字特征求解的同分布概率演化法

铁道学报 2024年第5期46卷 116-122页

作者：周子骥刘伟张楠杜宪亭夏超逸郑晓龙中铁二院工程集团有限责任公司科学技术研究院四川成都610036 北京交通大学土木建筑工程学院北京100044

为探究高速铁路列车的脱轨系数统计特性,提出同分布概率演化法研究其数字特征(均值与标准差)、阈值、概率分布和服从该分布的前提条件。采用该方法求得脱轨系数均值和标准差与横、竖向轮轨力数字特征的关系;本文方法证明脱轨系数满足高... 详细信息

为探究高速铁路列车的脱轨系数统计特性,提出同分布概率演化法研究其数字特征(均值与标准差)、阈值、概率分布和服从该分布的前提条件。采用该方法求得脱轨系数均值和标准差与横、竖向轮轨力数字特征的关系;本文方法证明脱轨系数满足高斯分布的数学条件;采用Monte Carlo法对脱轨系数的数字特征进行验证,并比较不同方法的计算效率;提出采用阈值估计法求脱轨系数的阈值。基于该方法,以动车组通过3跨桥梁为例,研究不同轨道谱、列车速度和桥梁动挠度等工况下的列车脱轨系数。计算结果表明:对常用高速铁路桥梁而言,脱轨系数具有高斯特性;本文计算方法能准确地求得不同工况下列车脱轨系数的数字特征,计算效率较高;脱轨系数的尾部分布不是高斯分布,不同工况需要采用相应的阈值估计法才能达到高斯分布3σ法则的置信水平。

关键词：脱轨系数同分布概率演化法数字特征阈值估计法 3σ法则

Enhanced Formaldehyde Gas Sensor based on Au-loaded ZnSnO_(3) Microspheres Nanocomposites

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Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1061-1065页

作者：何星欣陈洁应智花 zheng xiaolong zheng Peng College of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China

ZnSnO_(3) microspheres was compounded by hydrothermal method with sodium alginate(SA)as a crystal growth modifier,and the Au nanoparticles were decorated on the surface of ZnSnO_(3) microspheres by simple solution method and heat treatment *** structure and morphology of the prepared samples were characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).Under ultraviolet(UV)irradiation,the 0.2wt%Au/ZnSnO_(3)@4g/L SA sensor could detect HCHO and reached a good response of 18.8 at 20 ppm,which was three times higher than the ZnSnO_(3) in the absence of *** sensor also performed an outstanding linearity within 5-20 ppm HCHO and satisfied ***,the possible mechanism of the influence of Au on gas sensitivity is also proposed.

关键词： ZnSnO_(3) Au HCHO gas sensor SA

Astrocyte transplantation for repairing the injured spinal cord

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The Journal of Biomedical Research 2022年第5期36卷 312-320页

作者： xiaolong zheng Wei Wang Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China Key Laboratory of Neurological Diseases of Chinese Ministry of Education the School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China

Spinal cord injury(SCI)leads to permanent deficits in neural function without effective therapies,which places a substantial burden on families and ***,the major glia supporting the normal function of neurons in the spinal cord,become active and form glial scars after SCI,which has long been regarded as a barrier for axon ***,recent progress has indicated the beneficial role of astrocytes in spinal *** the past three decades,astrocyte transplantation for SCI treatment has gained increasing *** this review,we first summarize the progress of using rodent astrocytes as the primary step for spinal *** astrocytes can survive well,migrate extensively,and mature in spinal injury;they can also inhibit host reactive glial scar formation,stimulate host axon regeneration,and promote motor,sensory,respiratory,and autonomic functional ***,we review the progress in spinal repair by using human astrocytes of various origins,including the fetal brain,fetal spinal cord,and pluripotent stem ***,we introduce some key questions that merit further research in the future,including rapid generation of large amounts of human astrocytes with high purity,identification of the right origins of astrocytes to maximize neural function improvement while minimizing side effects,testing human astrocyte transplantation in chronic SCI,and verification of the long-term efficacy and safety in large animal models.

关键词： spinal cord injury astrocyte transplantation regeneration

Platform governance in the era of AI and the digital economy

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Frontiers of Engineering Management 2023年第1期10卷 177-182页

作者： xiaolong zheng Gang ZHOU Daniel Dajun ZENG The State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence Chinese Academy of SciencesBeijing 100190China

1 Introduction Companies that supply online services such as Twitter,Weibo,and Taobao are known as platform companies(Gorwa,2019).Many top companies offer their services through platforms and use Internet technology to facilitate economic transactions,transmit information,connect people,and make predictions(Fenwick et al.,2019).Such platforms cover all areas of society,including politics(Gillespie,2017),labor relations,cultural production(Scholz,2016;van Doorn,2017),and consumption(Nieborg and Poell,2018).The rapid development of Internet technology has increased the influence of network *** platforms have changed the rules of global business operations and influenced the global political *** some high-profile negative events,calls for strengthening the regulation of online platforms and holding them accountable have been growing(Suzor,2019).

关键词： companies services operations

High-precision whispering gallery microsensors with ergodic spectra empowered by machine learning

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Photonics Research 2022年第10期10卷 2343-2348页

作者： BING DUAN HANYING ZOU JIN-HUI CHEN CHUN HUI MA XINGYUN ZHAO xiaolong zheng CHUAN WANG LIANG LIU DAQUAN YANG State Key Laboratory of Information Photonics and Optical Communications School of Information and Communication EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China Beijing Key Laboratory of Intelligent Telecommunication Software and Multimedia Beijing University of Posts and TelecommunicationsBeijing 100876China Institute of Electromagnetics and Acoustics and Fujian Provincial Key Laboratory of Electromagnetic Wave Science and Detection Technology Xiamen UniversityXiamen 361005China Shenzhen Research Institute of Xiamen University Shenzhen 518000China School of Artificial Intelligence Beijing Normal UniversityBeijing 100875China

Whispering gallery mode(WGM)microcavities provide increasing opportunities for precision measurement due to their ultrahigh sensitivity,compact size,and fast ***,the conventional WGM sensors rely on monitoring the changes of a single mode,and the abundant sensing information in WGM transmission spectra has not been fully ***,empowered by machine learning(ML),we propose and demonstrate an ergodic spectra sensing method in an optofluidic microcavity for high-precision pressure *** developed ML method realizes the analysis of the full features of optical *** prediction accuracy of 99.97%is obtained with the average error as low as 0.32 kPa in the pressure range of 100 kPa via the training and testing *** further achieve the real-time readout of arbitrary unknown pressure within the range of measurement,and a prediction accuracy of 99.51%is ***,we demonstrate that the ergodic spectra sensing accuracy is∼11.5%higher than that of simply extracting resonating modes’*** the high sensitivity and prediction accuracy,this work opens up a new avenue for integrated intelligent optical sensing.

关键词： measurement spectra prediction

Predicting impact forces on pipelines from deep-sea fluidized slides:A comprehensive review of key factors

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International Journal of Mining Science and Technology 2024年第2期34卷 211-225页

作者： Xingsen Guo Ning Fan Defeng zheng Cuiwei Fu Hao Wu Yanjun Zhang xiaolong Song Tingkai Nian State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China Department of Civil Environmentaland Geomatic EngineeringUniversity College LondonLondon WC1E 6BTUnited Kingdom Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering Ocean University of ChinaQingdao 266100China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China College of Civil Engineering and Architecture Wenzhou UniversityWenzhou 325035China Key Laboratory of Engineering and Technology for Soft Soil Foundation and Tideland Reclamation of Zhejiang Province Wenzhou 325035China Zhejiang International Science and Technology Cooperation Base of Ultra-soft Soil Engineering and Smart Monitoring Wenzhou 325035China School of Geography Liaoning Normal UniversityDalian 116029China China Railway First Survey and Design Institute Group Co. Ltd.Xi’an 710043China Department of Geotechnical Engineering Nanjing Hydraulic Research InstituteNanjing 210024China Wuhan Center China Geological Survey(Central South China Innovation Center for Geosciences)Wuhan 430205China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China

Deep-sea pipelines play a pivotal role in seabed mineral resource development,global energy and resource supply provision,network communication,and environmental ***,the placement of these pipelines on the seabed surface exposes them to potential risks arising from the complex deep-sea hydrodynamic and geological environment,particularly submarine *** incidents have highlighted the substantial damage to pipelines due to ***,deep-sea fluidized slides(in a debris/mud flow or turbidity current physical state),characterized by high speed,pose a significant *** assessing the impact forces exerted on pipelines by fluidized submarine slides is crucial for ensuring pipeline *** study aimed to provide a comprehensive overview of recent advancements in understanding pipeline impact forces caused by fluidized deep-sea slides,thereby identifying key factors and corresponding mechanisms that influence pipeline impact *** factors include the velocity,density,and shear behavior of deep-sea fluidized slides,as well as the geometry,stiffness,self-weight,and mechanical model of ***,the interface contact conditions and spatial relations were examined within the context of deep-sea slides and their interactions with *** upon a thorough review of these achievements,future directions were proposed for assessing and characterizing the key factors affecting slide impact loading on pipelines.A comprehensive understanding of these results is essential for the sustainable development of deep-sea pipeline projects associated with seabed resource development and the implementation of disaster prevention measures.

关键词： Deep-sea fluidized slides Pipes Impact forces Shear behavior of slides Interface contact conditions Spatial relation

Social influence and spread dynamics in social networks

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Frontiers of Computer Science 2012年第5期6卷 611-620页

作者： xiaolong zheng Yongguang ZHONG Daniel ZENG Fei-Yue WANG State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China Department of Management Science and Engineering Qingdao UniversityQingdao 266071China

Social networks often serve as a critical medium for information dissemination, diffusion of epidemics, and spread of behavior, by shared activities or similarities be- tween individuals. Recently, we have witnessed an explosion of interest in studying social influence and spread dynamics in social networks. To date, relatively little material has been provided on a comprehensive review in this field. This brief survey addresses this issue. We present the current significant empirical studies on real social systems, including network construction methods, measures of network, and newly em- pirical results. We then provide a concise description of some related social models from both macro- and micro-level per- spectives. Due to the difficulties in combining real data and simulation data for verifying and validating real social sys- tems, we further emphasize the current research results of computational experiments. We hope this paper can provide researchers significant insights into better understanding the characteristics of personal influence and spread patterns in large-scale social systems.

关键词： social networks spread dynamics social influence computational experiment