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Seismic isolation design and resilience improvement of railway station considering the influence of near-fault pulse-like ground motions

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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 257-270页

作者： Pan Yi Song Jiayu chen qi Liu Yongxin School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China Key Laboratory of Seismic Engineering of Sichuan Province Chengdu 610031China

To improve the resilience of railway stations,a typical station was selected as the research object,and an isolation design was ***-four groups of near-fault pulse-like ground motions were *** seismic resilience of the no-isolation railway stations(NIRS)and the isolation railway stations(IRS)were compared to provide a numerical result of the improvement in *** results show that in the station isolation design,the station's functional requirements and structural characteristics should be considered and the appropriate placement of isolation bearings is under the waiting *** the action of a rare earthquake,the repair cost,repair time,rate of harm and death of the IRS were decreased by 8.04 million,18.30 days,6.93×10^(-3)and 1.21×10^(-3),respectively,when compared to the *** IRS received a seismic resilience grade of three-stars and the NIRS only one-star,indicating that rational isolation design improves the seismic resilience of ***,for the design of stations close to earthquake faults,it is suggested to utilize appropriate isolation techniques to improve their seismic resilience.

关键词： railway station near-fault pulse-like ground motion isolation design seismic resilience resilience improvement

Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang Hanyu Wu qi chen Jiaxin Yang Bonan Liu School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China China University of Petroleum Beijing 102299China

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH_(3)/O_(2)and the production of N_(2)/H_(2)change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH_(3)by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O(1S).However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also hel

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

PAMPHLET:PAM Prediction HomoLogous-Enhancement Toolkit for precise PAM prediction in CRISPR-Cas systems

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Journal of Genetics and Genomics 2025年第2期52卷 258-268页

作者： chen qi Xuechun Shen Baitao Li Chuan Liu Lei Huang Hongxia Lan Donglong chen Yuan Jiang Dan Wang Guangdong Provincial Key Laboratory of Interdisciplinary Research and Application for Data Science BNU-HKBU United International CollegeZhuhaiGuangdong 519087China School of Biology and Biological Engineering South China University of TechnologyGuangzhouGuangdong 510006China BGI Research HangzhouZhejiang 310030China BGI Research ShenzhenGuangdong 518083China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Laboratory of Integrative Biomedicine Department of BiologyFaculty of ScienceUniversity of CopenhagenCopenhagenDenmark qingdao-Europe Advanced Institute for Life Sciences BGI ResearchQingdaoShandong 266555China School of Life Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhouZhejiang 310024China STOmics Americas Ltd. 2904 Orchard PkwySan Jose CA 95134USA

CRISPR-Cas technology has revolutionized our ability to understand and engineer organisms,evolving from a singular Cas9 model to a diverse CRISPR toolbox.A critical bottleneck in developing new Cas proteins is identifying protospacer adjacent motif(PAM)*** to the limitations of experimental methods,bioinformatics approaches have become ***,existing PAM prediction programs are limited by the small number of spacers in CRISPR-Cas systems,resulting in low *** address this,we develop PAMPHLET,a pipeline that uses homology searches to identify additional spacers,significantly increasing the number of spacers up to *** is validated on 20 CRISPR-Cas systems and successfully predicts PAM sequences for 18 *** predictions are further validated using the DocMF platform,which characterizes protein-DNA recognition patterns via next-generation *** high consistency between PAMPHLET predictions and DocMF results for Cas proteins demonstrates the potential of PAMPHLET to enhance PAM sequence prediction accuracy,expedite the discovery process,and accelerate the development of CRISPR tools.

关键词： CRISPR-Cas Protospacer adjacentmotif Genome editing PAM prediction Computational framework

Causes of Atypical Meiyu in the Lower Yangtze River Basin in 2022: Subseasonal Perspective and Predictions

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Journal of Meteorological Research 2025年第01期 172-192页

作者： Zhiqi ZHANG Ping LIANG Yajing LIU Yang WU Lingfeng TAO qi chen Yihui DING Key Laboratory of Cities' Mitigation and Adaptation to Climate Change in Shanghai Shanghai Regional Climate CentreChina Meteorological Administration China Meteorological Administration Key Laboratory for Climate Prediction Studies School of Atmospheric SciencesNanjing University Nanjing Joint Institute for Atmospheric Sciences China Meteorological Administration School of Atmospheric Sciences Nanjing University of Information Science & Technology National Climate Centre China Meteorological Administration

Meiyu is the main rainy season in the middle and lower reaches of the Yangtze River basin. However, the mechanism and predictability of atypical Meiyu are not clear. In 2022, an atypical “hot-and-dry” Meiyu occurred in the lower Yangtze River basin(LYRB). By taking the 2022 Meiyu as an example, causes of the atypical Meiyu are diagnosed from the perspective of subseasonal evolution, and its predictability is further evaluated with ECMWF and NCEP Climate Forecast System version 2(CFSv2) forecast models. The 2022 atypical Meiyu featured an early onset and a three-stage back-and-forth swing through LYRB, with two sudden meridional rainband shifts, i.e., a southward withdrawal in early June and a northward leap in late June. Influenced by the active phases of the boreal summer intraseasonal oscillation(BSISO) and the “cold vortex–heat dome(CVHD)” pattern in northern East Asia, the Meiyu rainband was suppressed and retreated southward to South China in early June. A northwestward expansion of western Pacific subtropical high(WPSH) and an abrupt northward leap of the rainband terminated Meiyu near early July due to a sudden northward displacement of the East Asian summer westerly jet and the BSISO2(10–30 day BSISO)-modulated anomalous cyclone in the subtropics. Two eastward-propagating intraseasonal wave trains along the polar front and subtropical westerly jets that are responsible for the jet displacement played crucial roles in triggering the CVHD pattern and forming an enormous upper-tropospheric anomalous anticyclone over western East Asia. Both ECMWF and CFSv2 models exhibited lower prediction skills on extratropical intraseasonal oscillations(ISOs) than on tropical ISOs. The models well predicted the rainband position in the first and third stages, but overestimated the LYRB rainfall in the second stage, which was caused by poor representation of the two intraseasonal wave trains and the CVHD pattern. These results highlight the cooperative effects of tropical and

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造型艺术:与时俱进的文化活体

美术观察 2025年第1期 15-18页

作者：陈琦中央美术学院中央美术学院研究生院

造型艺术是一切视觉和空间艺术的集合,是不断流变的文化活体。不同文明体在不同的历史时期都有自己的造型艺术,有其独特的艺术观念与表达形式,同时也带有那个时代技术文明的印迹。面对信息全球化、万物互联、人工智能大数据与多学科交... 详细信息

造型艺术是一切视觉和空间艺术的集合,是不断流变的文化活体。不同文明体在不同的历史时期都有自己的造型艺术,有其独特的艺术观念与表达形式,同时也带有那个时代技术文明的印迹。面对信息全球化、万物互联、人工智能大数据与多学科交叉融合的当代社会,造型艺术不能固守传统边界,而须紧跟时代发展步伐,融入新思想、注入新技术、拓展新的艺术表现形式,方能葆有鲜活而动人的活力。

关键词：造型艺术视觉与空间艺术集合美与善的表达与时俱进

病例队列设计下可加可乘风险模型的Bootstrap估计

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数理统计与管理 2025年第1期44卷 106-118页

作者：陈佳琪中国科学院数学与系统科学研究院应用数学研究所北京100190 中国科学院大学北京100049

本文聚焦于病例队列设计的研究,旨在解决协变量测量成本高昂和疾病发病率较低等现实问题。该方法可以显著降低大规模预测性研究的成本。针对病例队列数据下的可加可乘风险模型,本文提出了三种估计方法,并采用了一种单阶段重抽样的非参数... 详细信息

本文聚焦于病例队列设计的研究,旨在解决协变量测量成本高昂和疾病发病率较低等现实问题。该方法可以显著降低大规模预测性研究的成本。针对病例队列数据下的可加可乘风险模型,本文提出了三种估计方法,并采用了一种单阶段重抽样的非参数bootstrap方法进行协方差估计。通过数值模拟研究,我们将bootstrap方法获得的协方差估计与基于渐近理论的协方差估计进行了比较。结果显示,bootstrap方法表现出色。此外,我们将所提方法应用到一个实际案例中,取得了良好的分析效果。

关键词：可加可乘风险模型 Bootstrap方法病例队列设计简单随机抽样单阶段重抽样加权估计函数

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国家级一流本科专业建设点的布局及特征分析

黑龙江高教研究 2025年第2期43卷 8-16页

作者：陈祥祺厦门大学福建厦门361005

国家级一流本科专业的建设工作体现一流本科、一流专业和一流人才的建设旨向,其布局更深谙着我国一流本科教育的长远规划,故尝试对收集到的11 502个国家级一流本科专业建设点进行基本情况的统计分析和空间布局的聚类分析,借此明晰国家... 详细信息

国家级一流本科专业的建设工作体现一流本科、一流专业和一流人才的建设旨向,其布局更深谙着我国一流本科教育的长远规划,故尝试对收集到的11 502个国家级一流本科专业建设点进行基本情况的统计分析和空间布局的聚类分析,借此明晰国家级一流本科专业建设点在全国范围内的地域分布及配置情况。结果显示:国家级一流本科专业建设点的布局存续着“三不均”和“三具有”之特征,即国家级一流本科专业建设点的地域分布不均、校际分布不均和学科分布不均,具有重点的区域集聚、具有鲜明的战略导向和具有动态的调整机制。有鉴于此,有针对性地提出具体的实践策略,以期为国家级一流本科专业建设点全面落实“双万计划”的目标要求提供指引。

关键词：一流本科教育国家级一流本科专业建设点布局特征

Improved reference-frame-independent quantum key distribution with intensity fluctuations

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CHINESE PHYSICS B 2025年第2期34卷 48-52页

作者： chen, Zi-qi Sun, Hao-Bing Sun, Ming-Shuo Wang, qin Nanjing Univ Posts & Telecommun Inst Quantum Informat & Technol Nanjing 210003 Peoples R China Nanjing Univ Posts & Telecommun Minist Educ Key Lab Broadband Wireless Commun & Sensor Network Technol Nanjing 210003 Peoples R China

Reference-frame-independent quantum key distribution (RFI-QKD) can avoid real-time calibration operation of reference frames and improve the efficiency of the communication process. However, due to imperfections of optical devices, there will inevitably exist intensity fluctuations in the source side of the QKD system, which will affect the final secure key rate. To reduce the influence of intensity fluctuations, an improved 3-intensity RFI-QKD scheme is proposed in this paper. After considering statistical fluctuations and implementing global parameter optimization, we conduct corresponding simulation analysis. The results show that our present work can present both higher key rate and a farther transmission distance than the standard method.

关键词： quantum key distribution intensity fluctuations decoy-state method

教师教学情感的当代意蕴、存在问题与解决对策

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教育理论与实践 2025年第5期45卷 32-37页

作者：陈斯琪四川师范大学教育科学学院四川成都邮编610000

教师教学情感是教师的个体自主性表达,是教师在教学实践活动中情感体验的产物,更是对“知情共进”的教育活动的意向性感受。当下仍存在教学情感自主性受限,敷衍行为滋生;教学情感理智性不足,功利行为异化;教学情感教育性缺乏,服从行为... 详细信息

教师教学情感是教师的个体自主性表达,是教师在教学实践活动中情感体验的产物,更是对“知情共进”的教育活动的意向性感受。当下仍存在教学情感自主性受限,敷衍行为滋生;教学情感理智性不足,功利行为异化;教学情感教育性缺乏,服从行为盲目等问题。教师教学情感价值复归的对策是:深化教师职业道德,增强情感韧性坚守;统一教学与研究,增进教师个人理智;厚植教育情怀,践行教育家精神。

关键词：教师教学情感教师职业道德教学与研究教育情怀情感教学