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串联锚在黏土中的三向受荷承载力分析

岩土力学 2025年第2期46卷 582-590页

作者：杨明云陈川赖莹陈云敏浙江大学建筑工程学院浙江杭州310058

大力发展可再生能源已成为世界各国的共识,其中的重要方向之一是海上风电。海上风机上部结构所受的风、浪、流等复杂环境荷载最终由锚固基础承担,因此锚固基础的承载性能在确保整个系统的服役稳定性中起着决定性作用。串联锚是一种新型... 详细信息

大力发展可再生能源已成为世界各国的共识,其中的重要方向之一是海上风电。海上风机上部结构所受的风、浪、流等复杂环境荷载最终由锚固基础承担,因此锚固基础的承载性能在确保整个系统的服役稳定性中起着决定性作用。串联锚是一种新型混合锚,由两个或多个传统锚板(如拖曳锚或法向承力锚)组合而成,具有安装成本低、锚固效率高、可重复使用和承载能力高等优点。提出了串联锚的塑性极限分析上限解可以快速预测串联锚的承载能力,发现不排水抗剪强度梯度k并不会对承载能力系数产生影响。在耦合荷载的影响下,串联锚的法向抗力主导了承载力的大小,切向荷载与旋转扭矩的发挥机制与单一锚板区别不大。服役过程中,串联锚相对于单个锚板需要更大的位移来调动其极限承载能力。

关键词：串联锚黏土相互干扰塑性极限分析法数值模拟

Advances in Graphene‑Based Electrode for Triboelectric Nanogenerator

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Nano-Micro Letters 2025年第1期17卷 378-403页

作者： Bin Xie Yuanhui Guo yun chen Hao Zhang Jiawei Xiao Maoxiang Hou Huilong Liu Li Ma Xin chen Chingping Wong State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

With the continuous development of wearable electronics,wireless sensor networks and other micro-electronic devices,there is an increasingly urgent need for miniature,flexible and efficient nanopower generation *** nanogenerator(TENG)technology can convert small mechanical energy into electricity,which is expected to address this *** the core component of TENG,the choice of electrode materials significantly affects its *** metal electrode materials often suffer from problems such as durability,which limits the further application of ***,as a novel electrode material,shows excellent prospects for application in TENG owing to its unique structure and excellent electrical *** review systematically summarizes the recent research progress and application prospects of TENGs based on graphene *** precision processing methods of graphene electrodes are introduced,and the applications of graphene electrode-based TENGs in various scenarios as well as the enhancement of graphene electrodes for TENG performance are *** addition,the future development of graphene electrode-based TENGs is also prospectively discussed,aiming to promote the continuous advancement of graphene electrode-based TENGs.

关键词： Triboelectric nanogenerator Precision processing Graphene electrode Self-powered sensor

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日本的新能源国际战略与“印太”能源圈构建

日本学刊 2025年第1期 21-41,149页

作者：程蕴南开大学世界近现代史研究中心、日本研究院

随着主要国家相继提出达成“碳中和”目标的时间表,全球进入了由化石能源向新能源转型的过渡期。不同于以往的化石能源战略以海外能源供应安全为核心目标,日本的新能源国际战略致力于在产业结构转型过程中提高国际市场的占有率,在中美... 详细信息

随着主要国家相继提出达成“碳中和”目标的时间表,全球进入了由化石能源向新能源转型的过渡期。不同于以往的化石能源战略以海外能源供应安全为核心目标,日本的新能源国际战略致力于在产业结构转型过程中提高国际市场的占有率,在中美高科技竞争条件下提高供应链的自主性,以及在新旧能源的转换期实现能源安全、环境保护与经济效益的动态平衡。日本的新能源国际战略在实施方向上聚焦于构建本国主导的“印太”能源圈,并采取共同体建设、话语权构建、供应链构筑三条路径。在共同体建设中,日本通过打造所谓的“亚洲特色”来争取欧美国家的认可与让步;在话语权构建中,日本积极为积累实践知识创造条件,以期在东南亚国家内部树立学习日本模式的发展信念;在供应链构筑中,日本从技术与政治两方面入手,着力构建以氢能及其衍生物为核心的制造、运输、消费体系。由于日本的战略短视,其政策推进始终面临重重困难,日本需要更多地关注发展中国家的诉求,并与包括中国在内的国家进行更广泛的合作。

关键词：新能源国际战略 “印太”能源圈亚洲零排放共同体能源供应链

Beyond the tumor region:Peritumoral radiomics enhances prognostic accuracy in locally advanced rectal cancer

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World Journal of Gastroenterology 2025年第8期31卷 49-65页

作者： Zhi-Ying Liang Mao-Li Yu Hui Yang Hao-Jiang Li Hui Xie Chun-Yan Cui Wei-Jing Zhang Chao Luo Pei-Qiang Cai Xiao-Feng Lin Kun-Feng Liu Lang Xiong Li-Zhi Liu Bi-yun chen Department of Radiology State Key Laboratory of Oncology in South ChinaGuangdong Provincial Clinical Research Center for CancerSun Yat-sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina Department of Radiology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina West China School of Medicine Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Medical Imaging First Affiliated Hospital of Gannan Medical UniversityGanzhou 341000Jiangxi ProvinceChina

BACKGROUND The peritumoral region possesses attributes that promote cancer growth and ***,the potential prognostic biomarkers in this region remain relatively underexplored in *** To investigate the prognostic value and importance of peritumoral radiomics in locally advanced rectal cancer(LARC).METHODS This retrospective study included 409 patients with biopsy-confirmed LARC treated with neoadjuvant chemoradiotherapy and *** were divided into training(n=273)and validation(n=136)*** on intratumoral and peritumoral radiomic features extracted from pretreatment axial high-resolution small-field-of-view T2-weighted images,multivariate Cox models for progression-free survival(PFS)prediction were developed with or without clinicoradiological features and evaluated with Harrell’s concordance index(C-index),calibration curve,and decision curve *** stratification,Kaplan-Meier analysis,and permutation feature importance analysis were *** The comprehensive integrated clinical-radiological-omics model(ModelICRO)integrating seven peritumoral,three intratumoral,and four clinicoradiological features achieved the highest C-indices(0.836 and 0.801 in the training and validation sets,respectively).This model showed robust calibration and better clinical net benefits,effectively distinguished high-risk from low-risk patients(PFS:97.2%vs 67.6%and 95.4%vs 64.8%in the training and validation sets,respectively;both P<0.001).Three most influential predictors in the comprehensive ModelICRO were,in order,a peritumoral,an intratumoral,and a clinicoradiological ***,the peritumoral model outperformed the intratumoral model(C-index:0.754 vs 0.670;P=0.015);peritumoral features significantly enhanced the performance of models based on clinicoradiological or intratumoral features or their *** Peritumoral radiomics holds greater prognostic value than intratumoral radiomics for predicting PFS in L

关键词： Rectal cancer Peritumoral radiomics Intratumoral radiomics Prognosis analysis Variable importance analysis Tumor microenvironment

基于植筋连接的消能减震框架子结构加固技术研究

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工程建设与设计 2025年第2期 180-182页

作者：陈运思陈恺三门峡市建筑设计院有限责任公司河南三门峡472001

针对加固钢筋混凝土框架结构中常见的稳定性与效率问题,研究分析了传统方法存在的局限性。通过采用植筋连接技术并辅以消能减震措施,实施了力学性能优化与位移控制策略。结果表明,综合应用植筋连接和消能减震技术后,在模拟7级地震作用下... 详细信息

针对加固钢筋混凝土框架结构中常见的稳定性与效率问题,研究分析了传统方法存在的局限性。通过采用植筋连接技术并辅以消能减震措施,实施了力学性能优化与位移控制策略。结果表明,综合应用植筋连接和消能减震技术后,在模拟7级地震作用下,结构顶部位移由150 mm显著降至108 mm,降幅达28%。该方案显著提升了结构加固后的稳定性。

关键词：植筋连接消能减震加固技术框架结构

Stability Analysis of Systems With Time-varying Delay via a Novel Lyapunov Functional

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IEEE/CAA Journal of Automatica Sinica 2019年第4期6卷 1068-1073页

作者： yun chen Gang chen the School of Electrical and Information Engineering Hunan University of TechnologyZhuzhou 412007 the Key Laboratory for Electric Drive Control and Intelligent Equipment of Hunan Province Zhuzhou 412007China

This paper investigates the stability problem for time-varying delay *** obtain a larger delay bound,this paper uses the second-order canonical Bessel-Legendre(BL)***,using four couples of integral terms in the augmented Lyapunov-Krasovskii function(LKF)to enhance the relationship between integral functionals and other ***,unlike the construction of the traditional LKF,a novel augmented LKF is constructed with two new delayproduct-type terms,which adds more state information and leads to less conservative ***,two numerical examples are provided to demonstrate the effectiveness and the significant improvement of the proposed stability criteria.

关键词： Integral inequality Lyapunov theorem stability time-delay systems

数字新质生产力对中国式产业链现代化的影响与机制——基于本土技术创新的中介效应

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中国流通经济 2025年第2期39卷 45-59页

作者：张林黄懿翀陈云涛广西大学经济学院广西南宁530004 华东师范大学马克思主义学院上海市200241

随着全球经济格局深度调整以及新一轮科技革命和产业变革加速演进,中国式产业链现代化成为我国全面提升产业体系现代化水平和国际竞争力的关键。而数字新质生产力能将大数据、云计算、人工智能等数字技术融入传统产业,拓展产业边界,助... 详细信息

随着全球经济格局深度调整以及新一轮科技革命和产业变革加速演进,中国式产业链现代化成为我国全面提升产业体系现代化水平和国际竞争力的关键。而数字新质生产力能将大数据、云计算、人工智能等数字技术融入传统产业,拓展产业边界,助力中国式产业链现代化。基于2012—2023年我国284个地级及以上城市(未含香港地区、澳门地区、台湾地区、西藏地区城市)面板数据,利用固定效应模型、中介效应模型、门槛效应模型,分析数字新质生产力对中国式产业链现代化的影响与机制。研究发现,数字新质生产力可有效推动中国式产业链现代化,且该结论在经过一系列稳健性和内生性检验后依然成立。中介效应检验结果表明,本土技术创新在数字新质生产力对中国式产业链现代化的影响中发挥中介作用,即数字新质生产力能够通过促进本土技术创新推动中国式产业链现代化。异质性分析结果表明,数字新质生产力三个子维度对中国式产业链现代化的推动作用均显著,且呈现数字劳动资料>数字劳动者>数字劳动对象的特征;在三大地区,数字新质生产力对中国式产业链现代化的推动作用均显著,且呈现东部地区>中部地区>西部地区的特征。门槛效应检验结果表明,数字新质生产力对中国式产业链现代化的推动作用具有双重门槛效应,即随着数字新质生产力发展水平提升,其对中国式产业链现代化的推动作用呈现非线性递增特征。为更好地推动中国式产业链现代化,应着力深化数字技术应用,培育数字新质生产力;建立科技创新高地,促进本土技术创新;因地制宜,差异化施策,构建数字新质生产力区域协同发展机制。

关键词：数字新质生产力中国式产业链现代化本土技术创新数字技术

Overview of deep structures under the Changbaishan volcanic area in Northeast China

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Science China Earth Sciences 2019年第6期62卷 935-952页

作者： Qi-Fu chen Yinshuang AI yun chen Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences College of Earth and Planetary Sciences University of Chinese Academy of Sciences Institutions of Earth Science Chinese Academy of Sciences State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

The Changbaishan volcano is an active and considerably hazardous volcano located on the border of China and North Korea. This paper summarizes a series of geophysical surveys as well as seismological and volcano-observational networks around the Changbaishan volcanic area. We characterize deep structures related to the Changbaishan volcanic area. The prominent low-velocity anomalies and low-resistance bodies associated with the magma system under the Changbaishan volcano were detected in the crust and upper mantle, and high-velocity anomalies were imaged within the mantle transition zone,suggesting that the origin of the Changbaishan volcano is related to the subducted Pacific slab. However, there exist a few major obstacles for comprehensively elucidating the deep structure of the Changbaishan volcano as well as for the preparedness for and response toward future volcanic unrest and activity. It is essential to collect data from both China and Korean Peninsula to image the deep structure beneath the Changbaishan volcanic area. A multi-disciplinary approach comprising seismological investigations, deformation information from GNSS and InSar, and gravity and magnetotelluric surveying is a reliable manner for imaging high-resolution structures and fluid movement for the spatial distribution and variation of the volcanic magma *** effective volcano-monitoring network system is considerably important to improve hazard assessments and characterize the potential future eruption of the Changbaishan volcano.

关键词： Changbaishan volcano Deep structure Geophysical observation

基于游记攻略的长江经济带旅游流网络结构特征及影响因素

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西华师范大学学报（自然科学版） 2025年第1期46卷 72-78页

作者：刘大均陈君子陈云成都大学旅游与文化产业学院成都610106

宏观把握长江经济带旅游流的网络结构,对于长江经济带旅游空间格局优化、旅游业高质量发展具有重要意义。基于游记攻略大数据挖掘,运用复杂网络模型、地理探测器等方法,分析长江经济带旅游流的网络结构特征以及影响因素。研究表明:长江... 详细信息

宏观把握长江经济带旅游流的网络结构,对于长江经济带旅游空间格局优化、旅游业高质量发展具有重要意义。基于游记攻略大数据挖掘,运用复杂网络模型、地理探测器等方法,分析长江经济带旅游流的网络结构特征以及影响因素。研究表明:长江经济带旅游流网络具有明显幂律分布规律,多极化层级结构突出,上海市是核心节点,成都市、南京市、武汉市、重庆市、长沙市、杭州市、昆明市、苏州市、南昌市、合肥市是次核心节点;长江经济带旅游流网络不均衡性强,小世界性特征显著,形成了长三角、长江中游、川渝、云南、贵州5个社团。旅游关注度、旅游产业基础、旅游资源禀赋是长江经济带旅游流网络结构的主要影响因素,其中旅游关注度是首要因素。最后,提出强化核心节点辐射带动、着力完善区域合作机制、加大旅游宣传营销力度等建议。

关键词：旅游旅游流大数据长江经济带