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Frontiers of Architectural Research 2024年第2期13卷 305-318页

作者： bo wan Dongyang wan Qiang Sheng School of Architecture and Design Beijing Jiaotong UniversityBeijing 100044China

This paper,set against the backdrop of expanding urban rail networks and dynamic urban development,focuses on the distribution and evolution of commercial Points of Interests(POIs)within the central urban rail transit areas of *** study examines data from four different years-2008,2013,2017,and 2020-to observe the temporal evolution of commercial *** identifies stable explanatory variables affecting the distribution and evolution of commercial POIs,which include rail transit accessibility,characteristics of the working and residential population distribution around stations,and the construction intensity in the vicinity of station *** statistical analysis and model building,relatively stable linear regression equations were established,with R2 values generally maintained above 0.5(except for 2017).The study advances our understanding of the influence of rail transit on urban commercial spaces and how this influence shifts with temporal and urban developmental *** elucidates the correlation between changes in the number of businesses and spatial configuration,offering insights and information for urban planners and policy *** research also serves as a model for exploring the interplay between urban rail transit and commercial spaces in other major cities.

关键词： Urbanrail transit areas Spatial configuration Distributionand evolution of commercial POls

Spatial and temporal variation of water clarity in typical reservoirs in the Beijing-Tianjin-Hebei region observed by GF 1-WFV satellite data

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Journal of Oceanology and Limnology 2024年第4期42卷 1048-1060页

作者： Chang CAO Junsheng LI Xiaodong JIA Shenglei wanG bo wan Liaoning Earthquake Agency Shenyang 11000China Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100094China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China

Rapidly monitoring regional water quality and the changing trend is of great practical and scientific significance,especially for the Beijing-Tianjin-Hebei(BTH)region of China where water resources are relatively scarce and inland water bodies are generally *** remote sensing data of the GF 1 satellite launched in 2013 have characteristics of high spatial and temporal resolution,which can be used for the dynamic monitoring of the water environment in small lakes and ***,the water quality remote sensing monitoring model based on the GF 1 satellite data for lakes and reservoirs in BTH is still lacking because of the considerable differences in the optical characteristics of the lakes and *** this paper,the typical reservoirs in BTH-Guanting Reservoir,Yuqiao Reservoir,Panjiakou Reservoir,and Daheiting Reservoir are taken as the study *** the atmospheric correction of GF 1-WFV,the relative radiation normalized atmospheric correction was adopted after comparing it with other methods,such as 6 S and *** the water clarity retrieval,a water color hue angle based model was proposed and outperformed other available published models,with the R 2 of 0.74 and MRE of 31.7%.The clarity products of the four typical reservoirs in the BTH region in 2013-2019 were produced using the GF 1-WFV *** on the products,temporal and spatial changes in clarity were analyzed,and the main influencing factors for each water body were *** was found that the clarity of Guanting,Daheiting,and Panjiakou reservoirs showed an upward trend during this period,while that of Yuqiao Reservoir showed a downward *** the influencing factors,the water level of the water bodies can be an important factor related to the water clarity changes in this region.

关键词： GF 1 satellite atmospheric correction clarity Beijing-Tianjin-Hebei spatial and temporal change analysis

Thiazoloisoindigo-based Polymer Semiconductors: Synthesis,Structure-Property Relationship, Charge Carrier Polarity, and Field-Effect Transistor Performance

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Chinese Journal of Polymer Science 2024年第1期42卷 24-31,I0006页

作者： bo-Wen Li Miao Xiong Mei-Hua Liu Zhi-Gao Li Long Sang Zi-Han Xiong Biao Xiao Jian Pei Xiao-bo wan Key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of EducationSchoolofOptoelectronic Materials&TechnologyJianghan UniversityWuhan430056China Bejing National Laboratoryfor Molecular Sciences the Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Developing new polymeric semiconductors with excellent device performance is essential for organic electronics. Herein, we synthesized two new thiazoloisoindigo(Tz II)-based polymers, namely, P(Tz II-d Th-d Th) and P(Tz II-d Th-d Tz), by copolymerizing thiophene-flanked Tz II with bithiophene and bithiazole, respectively. Owing to the more electron-deficient nature of bithiazole than bithiophene, P(Tz II-d Th-d Tz)possesses deeper LUMO/HOMO levels of-3.45/-5.47 e V than P(Tz II-d Th-d Th)(-3.34/-5.32 e V). The organic field-effect transistor(OFET) devices based on P(Tz II-d Th-d Th) exhibited p-type behaviors with an average hole mobility value as high as 1.43 cm^(2)·V^(-1)·s^(-1), while P(Tz II-d Th-d Tz)showed typical ambipolar characteristics with average hole and electron mobilities of 0.38 and 0.56 cm^(2)·V^(-1)·s^(-1). In addition, we compared the performances of both polymers with other Tz II-based polymers reported in our previous work, and showed that the charge carrier polarity can be manipulated by adjusting the number of the thiophene units between the acceptor unit. As the increase of the number of thiophene rings,charge carrier polarity shifts from electron-dominated ambipolar transport to hole-dominated ambipolar transport and then to unipolar hole transport in OFETs, which provides an effective molecular design strategy for further optimization of polymer OFET performance.

关键词： Field-effect transistor Charge carrier polarity Thiazoloisoindigo

Impact Analysis of Microscopic Defect Types on the Macroscopic Crack Propagation in Sintered Silver Nanoparticles

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 441-458页

作者： Zhongqing Zhang bo wan Guicui Fu Yutai Su Zhaoxi Wu Xiangfen wang Xu Long School of Reliability and Systems Engineering Beihang UniversityBeijing100191China School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710072China China Aerospace Components Engineering Center Beijing100098China

Sintered silver nanoparticles(AgNPs)arewidely used in high-power electronics due to their exceptional ***,the material reliability is significantly affected by various microscopic *** this work,the three primary micro-defect types at potential stress concentrations in sintered AgNPs are identified,categorized,and *** dynamics(MD)simulations are employed to observe the failure evolution of different microscopic *** dominant mechanisms responsible for this evolution are dislocation nucleation and dislocation *** the same time,this paper clarifies the quantitative relationship between the tensile strain amount and the failure mechanism transitions of the three defect types by defining key strain *** impact of defect types on the failure process is also ***,traction-separation curves extracted from microscopic defect evolutions serve as a bridge to connect the macro-scale *** validity of the crack propagation model is confirmed through tensile ***,we thoroughly analyze how micro-defect types influence macro-crack propagation and attempt to find supporting evidence from the MD *** findings provide a multi-perspective reference for the reliability analysis of sintered AgNPs.

关键词： Sintered silver nanoparticles defect types microscopic defect evolution macroscopic crack propagation molecular dynamics simulation cohesive zone model

Multi-spherical interactions and mechanisms of hydrocarbon enrichment in the Southeast Asian archipelagic tectonic system

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Science China Earth Sciences 2024年第2期67卷 566-583页

作者： Rixiang ZHU Hongjun wanG Huajian wanG Xiaomei wanG bo wan wang ZHANG Houqin ZHU Yuke LIU Junlai LIU Qingren MENG Fang HAO Zhijun JIN State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China State Key Laboratory of Enhanced Oil and Gas Recovery PetroChina Research Institute of Petroleum Exploration and DevelopmentBeijing100083China School of Earth Sciences and Resources China University of GeosciencesBeijing100083China State Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao266580China Institute of Energy Peking UniversityBeijing100871China

Global cooling began since 50 Ma,but a warm climate was maintained in the archipelagic tectonic system in Southeast Asia where a wealth of Cenozoic oil and gas resources was formed and *** the perspective of Earth system,this study analyzes Cenozoic tectonic activities,climatic and environmental evolution,and petroleum enrichment in Southeast Asia,and provides the following insights:(1)Subduction of oceanic plates and the extension of overlying continental lithosphere resulted in widespread volcanic eruptions as well as the formation of rift basins and shallow marine shelves,leading to complex interactions between deep tectonic processes and Earth’s surface including mountains,basins,and seas.(2)Microcontinental accretion and prolonged stay in equatorial low-latitude regions have changed trade winds into monsoons,altered ocean current pathways and flow rates,and profoundly affected rainfall and climate.(3)The archipelagic tectonic system,coupled with a hot and rainy climate,fostered tropical rainforests,mangroves,and phytoplankton,providing abundant organic matter and promoting the development of petroleum resources.(4)Combinations of rift basin development and marine transgression and regression led to an effective superposition of source-reservoir-seal combinations from multiplepetroleum *** deep burial of organic matter and high geothermal gradients facilitated the generation and large-scale accumulation of oil and gas.(5)Multi-spherical(such as atmosphere,biosphere,hydrosphere and lithosphere)interactions on the Earth,which resulted from the convergence of multiple tectonic plates,are believed as the primary driver for exceptional enrichments of Cenozoic oil and gas resources in Southeast *** understandings are significant for developing theories of oil and gas enrichment under the guidance of Earth System *** order to continue making significant oil and gas exploration discoveries in the deep-layers,deep-waters,and unconventio

关键词： Southeast Asia Archipelagic tectonic system Interactions of Earth’s spheres Oil and gas resources Cenozoic

The multi-kingdom microbiome catalog of the chicken gastrointestinal tract

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Biosafety and Health 2024年第2期6卷 101-115页

作者： Yanan wang Mengqi Qu Yuhai Bi William J.Liu Sufang Ma bo wan Yongfei Hu Baoli Zhu Gaiping Zhang George F.Gao International Joint Research Center of National Animal Immunology College of Veterinary MedicineHenan Agricultural UniversityZhengzhou 450046China CAS Key Laboratory of Pathogen Microbiology and Immunology Institute of MicrobiologyChinese Academy of Sciences(CAS)Beijing 100101China Longhu Laboratory Zhengzhou 450046China University of Chinese Academy of Sciences Beijing 100049China NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China State Key Laboratory of Animal Nutrition and Feeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Chicken is an important food animal worldwide and plays an important role in human life by providing meat and *** recent significant advances in gut microbiome studies,a comprehensive study of chicken gut bacterial,archaeal,and viral genomes remains *** this study,we constructed a chicken multi-kingdom microbiome catalog(CMKMC),including 18,201 bacterial,225 archaeal,and 33,411 viral genomes,and annotated over 6,076,006 protein-coding genes by integrating 135 chicken gut metagenomes and publicly available metagenome-assembled genomes(MAGs)from ten *** found that 812 and 240 MAGs in our dataset were putative novel species and genera,respectively,far beyond what was previously *** newly unclassified MAGs were predominant in Phyla Firmicutes_A(n=263),followed by Firmicutes(n=126),Bacteroidota(n=121),and Proteobacteria(n=87).Most of the classified species-level viral oper-ational taxonomic units belong to ***,63.24%of chicken gut viromes are predicted to infect two or more hosts,including complete circular ***,we found that diverse auxiliary metabolic genes and antibiotic resistance genes were carried by ***,our CMKMC provides the largest integrated MAGs and viral genomes from the chicken gut to date,functional insights into the chicken gastrointestinal tract microbiota,and paves the way for microbial interventions for better chicken health and productivity.

关键词： Chicken Microbiome Metagenome assembled genomes Archaeome Virome Antibiotic resistance gene

网络文学读者情感消费的发生机理、表现形式与发展效应

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编辑之友 2024年第3期 38-44,104页

作者：王婉波周志雄河南工业大学新闻与传播学院河南郑州450000 安徽大学文学院安徽合肥230009

当前,情感消费与情绪传播日渐成为社交媒体连接和留住读者的关键元素,网站平台依靠读者的满足感维系读者,而读者通过情感满足与情绪宣泄来保持对网站平台的忠诚度。读者的情感满足与情绪宣泄背后隐藏着某种现实欲求,反映着该群体的现实... 详细信息

当前,情感消费与情绪传播日渐成为社交媒体连接和留住读者的关键元素,网站平台依靠读者的满足感维系读者,而读者通过情感满足与情绪宣泄来保持对网站平台的忠诚度。读者的情感满足与情绪宣泄背后隐藏着某种现实欲求,反映着该群体的现实境遇与意义焦虑问题。在此背景下,读者的消费活动伴随着劳动与生产,读者也成为“产消合一”的情感劳动者,在技术赋权与资本剥削下寻求自我发展。读者通过情感消费与劳动在各大社交媒体上创造价值,推动网站平台资本增殖,促进读者阅读与消费模式的升级,激发网文生产及IP产业链开发,丰富了读者线上线下社交方式,也助力了网文经典化、产业化发展。

关键词：网络文学读者情感消费表现形式发生机理发展效应

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消能减震技术在某门诊楼加固改造中的应用

工程抗震与加固改造 2024年第3期46卷 147-152,178页

作者：王益超梁万波山东华科规划建筑设计有限公司山东聊城252000

目前既有建筑涉及功能改变的情况较多,既有建筑涉及功能改变后,会带来一系列的检测鉴定和加固设计的问题。本文以某既有钢筋混凝土框架商务办公酒店楼改造为医院门诊楼为具体实例,针对典型的丙类建筑改乙类建筑的情况,结合消能减震技术... 详细信息

目前既有建筑涉及功能改变的情况较多,既有建筑涉及功能改变后,会带来一系列的检测鉴定和加固设计的问题。本文以某既有钢筋混凝土框架商务办公酒店楼改造为医院门诊楼为具体实例,针对典型的丙类建筑改乙类建筑的情况,结合消能减震技术,论述了两种最适合工程应用的消能减震加固方案:增设屈曲约束支撑加固方案和增设钢筋混凝土剪力墙+黏滞阻尼器加固方案。结合实际工程,针对两种方案从抗震性能、加固工程量及经济性、施工可行性等方面进行了详细的对比论述。对行业内比较棘手的丙类建筑改造为乙类建筑时,如何解决抗震构造措施普遍不足的问题,本文通过消能减震加固技术对该问题进行了详细的论述,通过实际工程方案对比,给出了较理想的解决方案,可供类似工程参考借鉴。

关键词：消能减震加固改造抗震性能屈曲约束支撑黏滞阻尼器

书画传承千载韵馆舍珍藏万古情——三苏祠馆藏嘉州画派书画作品研究

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现代艺术 2024年第7期 26-33页

作者：万波眉山三苏祠博物馆中国苏研究学会中国博物馆协会

20世纪七八十年代,李琼久携手同仁们创立了嘉州画派。自画派成立以来,创作出一系列集思想性、艺术性、观赏性为一体的优秀作品。2024年5月18日,国际博物馆日,从东坡老家传来好消息,眉山三苏祠博物馆正式荣升为国家一级博物馆。

关键词：国际博物馆日书画作品三苏祠眉山三苏李琼久嘉州馆舍馆藏

多冗余驱动并联机构2RPU+2UPR+RPR的动力学建模与控制策略研究

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机械工程学报 2024年第11期60卷 237-249页

作者：刘晓飞陈冉万波郭孟涛赵永生燕山大学河北省并联机器人与机电系统实验室秦皇岛066004

以多冗余驱动并联机构2RPU+2UPR+RPR为被控对象,利用虚功原理推导了该对象的动力学模型,并基于动力学模型开展了对多冗余驱动并联机构多种控制策略的对比研究。研究分为全力驱动模式和力位混合驱动模式两类,在全力驱动模式下,又分为基... 详细信息

以多冗余驱动并联机构2RPU+2UPR+RPR为被控对象,利用虚功原理推导了该对象的动力学模型,并基于动力学模型开展了对多冗余驱动并联机构多种控制策略的对比研究。研究分为全力驱动模式和力位混合驱动模式两类,在全力驱动模式下,又分为基于关节反馈的关节PID控制和关节增广PID控制以及基于动平台广义坐标反馈的广义PID控制、广义增广PID控制和计算力矩控制,通过仿真结果分析了上述控制策略的优劣性;在力位混合驱动模式下,首先介绍了两种比较传统的力位混合控制策略,然后提出了一种新的驱动力协调控制策略,通过仿真验证所提控制策略能够在一定程度上协调位控关节驱动力。

关键词：并联机构冗余驱动动力学协调控制

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