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Integrated and holistic knowledge map of phase change materials for pavement: A scientometric analysis and bibliometric review

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Jiasheng dai feng Ma Zhen Fu Chen Li Yingjie Hou Yalu Wen Yanzhe Zou Dongdong Yuan Wenhao Dong Ke Shi Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an University School of Material and Science Engineering Chang'an University

Elevated pavement temperatures contribute to the urban heat island effect and pose a risk of thermal damage to pavement. Thus， regulating pavement temperature is paramount to ensure its longevity， enhance traffic safety， and preserve the environment. Phase change materials (PCMs) with the latent heat characteristic can store and release thermal energy via phase transitions. PCMs can effectively control pavement structure temperatures within a relatively narrow range， mitigating thermal stress on asphalt pavements. This research aims to explore the current status and emerging trends in PCM Integrated Pavement Engineering (PCMIPE) using the CiteSpace visual analysis tool. Relevant publications were systematically curated from the Web of Science core database， spanning 2011 to 2023. Subsequently， the co-authorships network maps (country， institution， author)， co-cited network maps (co-cited journals， authors， and references)， and keyword co-occurrence network maps were constructed to analyze the principal contributions in the PCMIPE field comprehensively. This analysis provides an understanding of the field's strengths， research domains， and knowledge structure and identifies current research focal points and emerging frontiers. The findings reveal that research within the PCMIPE field is still in its early stages， with a predominant emphasis on material design and performance assessment. Additionally， future research is anticipated to expand into economic analyses and exploration of environmental effects when integrating PCMs into pavement engineering. Furthermore， there is an emerging interest in investigating the synergy of PCMs with other functional pavement technologies. These results underscore the potential of the PCMIPE field and emphasize the importance of future research endeavors.

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小口径CFRP-方截面钢管混凝土受弯性能研究

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中南大学学报（自然科学版） 2024年第1期55卷 279-290页

作者：戴雨辰陈铁林王风北京交通大学隧道与地下工程教育部工程研究中心北京100044 北京交通大学土木建筑工程学院北京100044 国能朔黄铁路发展有限责任公司原平分公司山西忻州034100

为研究小口径CFRP-方截面钢管混凝土的受弯性能,使用钢管外径分别为30、32、35 mm的3种试件(分别命名试件A、B和C)开展12组三点弯曲试验,观察试件的破坏形态并获得荷载-位移曲线。通过测得试件应变变化,对试验构件受弯性能进行分析。利... 详细信息

为研究小口径CFRP-方截面钢管混凝土的受弯性能,使用钢管外径分别为30、32、35 mm的3种试件(分别命名试件A、B和C)开展12组三点弯曲试验,观察试件的破坏形态并获得荷载-位移曲线。通过测得试件应变变化,对试验构件受弯性能进行分析。利用有限元软件ABAQUS对试件进行非线性有限元分析,并对钢管与水泥之间的黏结能力、水泥立方体试块抗压强度以及CFRP布厚度3组参数进行参数敏感性分析。研究结果表明:钢管内填充水泥与外缠CFRP布均可以提高试件的抗弯承载力最大值以及抗弯刚度;当钢管、水泥、CFRP布3种材料结合在一起时,提升效果最为明显,A、B、C这3种试件的抗弯承载力最大值分别提高了81.6%、93.3%和92.6%;钢管内是否填充水泥与试件的最终破坏形态有明显关联。有限元分析与试验所得荷载-位移曲线吻合较好,破坏模式一致。CFRP布厚度对抗弯承载力最大值以及梁的抗弯刚度有明显影响。

关键词：隧道工程 CFRP约束钢管混凝土受弯性能非线性有限元分析

Efficacy and safety of human umbilical cord-derived mesenchymal stem cells in the treatment of refractory immune thrombocytopenia:a prospective,single arm,phase I trial

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2250-2259页

作者： Yunfei Chen Yanmei Xu Ying Chi Ting Sun Yuchen Gao Xueqing Dou Zhibo Han feng Xue Huiyuan Li Wei Liu Xiaofan Liu Huan Dong Rongfeng Fu Mankai Ju Xinyue dai Wentian Wang Yueshen Ma Zhen Song Jundong Gu Wei Gong Renchi Yang Lei Zhang State Key Laboratory of Experimental Hematology National Clinical Research Centre for Blood DiseasesHaihe Laboratory of Cell EcosystemTianjin Key Laboratory of Gene Therapy for Blood DiseasesCAMS Key Laboratory of Gene Therapy for Blood DiseasesInstitute of Hematology&Blood Diseases HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeTianjin 300020China Tianjin Institutes of Health Science Tianjin 301600China National Clinical Research Center for Hematologic Diseases Jiangsu Institute of HematologyThe First Affiliated Hospital of Soochow UniversitySuzhou 215006China National Engineering Research Centre of Cell Products Tianjin Key Laboratory of Engineering Technologies for Cell PharmaceuticalAmCellGene Engineering Co.LtdTianjin 300457China School of Population Medicine and Public Health Chinese Academy of Medical Sciences and Peking Union Medical College100730 BeijingChina

Patients with refractory immune thrombocytopenia(ITP)frequently encounter substantial bleeding risks and demonstrate limited responsiveness to existing therapies.Umbilical cord-derived mesenchymal stem cells(UC-MSCs)present a promising alternative,capitalizing on their low immunogenicity and potent immunomodulatory effects for treating diverse autoimmune disorders.This prospective phase I trial enrolled eighteen eligible patients to explore the safety and efficacy of UC-MSCs in treating refractory ITP.The research design included administering UC-MSCs at escalating doses of 0.5×10^(6)cells/kg,1.0×10^(6)cells/kg,and 2.0×10^(6)cells/kg weekly for four consecutive weeks across three cohorts during the dose-escalation phase,followed by a dose of 2.0×10^(6)cells/kg weekly for the dose-expansion phase.Adverse events,platelet counts,and changes in peripheral blood immunity were monitored and recorded throughout the administration and follow-up period.Ultimately,12(with an addition of three patients in the 2.0×10^(6)cells/kg group due to dose-limiting toxicity)and six patients were enrolled in the dose-escalation and dose-expansion phase,respectively.Thirteen patients(13/18,72.2%)experienced one or more treatment emergent adverse events.Serious adverse events occurred in four patients(4/18,22.2%),including gastrointestinal hemorrhage(2/4),profuse menstruation(1/4),and acute myocardial infarction(1/4).The response rates were 41.7%in the dose-escalation phase(5/12,two received 1.0×10^(6)cells/kg per week,and three received 2.0×10^(6)cells/kg per week)and 50.0%(3/6)in the dose-expansion phase.The overall response rate was 44.4%(8/18)among all enrolled patients.To sum up,UC-MSCs are effective and well tolerated in treating refractory ITP(ClinicalTrials.gov ID:NCT04014166).

关键词： doses immunity treatment

Improving the electrical performances of InSe transistors by interface engineering

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Chinese Physics B 2024年第4期33卷 153-158页

作者：曹天俊郝松吴晨晨潘晨戴玉頔程斌梁世军缪峰 Institute of Brain-Inspired Intelligence National Laboratory of Solid State MicrostructuresSchool of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Institute of Interdisciplinary Physical Sciences School of PhysicsNanjing University of Science and TechnologyNanjing 210014China

InSe has emerged as a promising candidate for next-generation electronics due to its predicted ultrahigh electrical performance.However,the efficacy of the InSe transistor in meeting application requirements is hindered due to its sensitivity to interfaces.In this study,we have achieved notable enhancement in the electrical performance of InSe transistors through interface engineering.We engineered an InSe/h-BN heterostructure,effectively suppressing dielectric layer-induced scattering.Additionally,we successfully established excellent metal-semiconductor contacts using graphene ribbons as a buffer layer.Through a methodical approach to interface engineering,our graphene/InSe/h-BN transistor demonstrates impressive on-state current,field-effect mobility,and on/off ratio at room temperature,reaching values as high as 1.1 mA/μm,904 cm^(2)·V^(-1)·s^(-1),and>10~6,respectively.Theoretical computations corroborate that the graphene/InSe heterostructure shows significant interlayer charge transfer and weak interlayer interaction,contributing to the enhanced performance of InSe transistors.This research offers a comprehensive strategy to elevate the electrical performance of InSe transistors,paving the way for their utilization in future electronic applications.

关键词： two-dimensional materials InSe van der Waals heterostructure electrical performances charge density difference

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东北全面振兴的关键:融入全国统一大市场

经济纵横 2024年第5期 79-86页

作者：戴枫刘志彪南京大学商学院江苏南京210008

融入全国统一大市场是新一轮东北全面振兴的关键,其中解决对内开放不足问题是东北融入全国统一大市场的重点。当前,推动东北全面振兴面临新的重大机遇,东北要以对内开放为抓手,以构建新发展格局为契机,重塑产业竞争优势。在宏观层面,建... 详细信息

融入全国统一大市场是新一轮东北全面振兴的关键,其中解决对内开放不足问题是东北融入全国统一大市场的重点。当前,推动东北全面振兴面临新的重大机遇,东北要以对内开放为抓手,以构建新发展格局为契机,重塑产业竞争优势。在宏观层面,建立区域协调机制,搭建东北地区一体化平台;在中观层面,整合区内价值链,打造跨区域产业联动系统;在微观层面,加大对民营企业发展的支持力度,提升资源要素的流动性和竞争性。通过深入推进对内开放,实现与全国统一大市场的有效对接,在充分的经济循环中实现东北的全面振兴。

关键词：东北振兴全国统一大市场对内开放市场化

针对电力线通信信道下脉冲噪声的鲁棒混沌传输系统优化设计综述

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电子与信息学报 2024年第5期46卷 1761-1773页

作者：苗美媛田峰王琳代洲南京邮电大学通信与信息工程学院南京210003 厦门大学信息学院厦门361005 贵州财经大学管理科学与工程学院贵阳550025 自然资源部东南沿海海洋信息智能感知与应用重点实验室漳州363000

随着用户的剧增,现有的无线资源已经难以为继。因此,电力线通信(PLC)的重新启用引起了各大研究单位及工业界的关注。PLC由于信道环境复杂,现有处理方案复杂度及成本较高,因而导致其发展缓慢。其中针对脉冲噪声的研究工作最为广泛,如何... 详细信息

随着用户的剧增,现有的无线资源已经难以为继。因此,电力线通信(PLC)的重新启用引起了各大研究单位及工业界的关注。PLC由于信道环境复杂,现有处理方案复杂度及成本较高,因而导致其发展缓慢。其中针对脉冲噪声的研究工作最为广泛,如何在低成本情况下针对脉冲噪声实现数据传输的鲁棒性尤为重要。该文首先介绍PLC环境中几种主流噪声以及分类,而后描述具有低成本低复杂度的差分混沌键控(DCSK)及多元DCSK(MDCSK)调制技术。分别介绍与分析该系统在PLC中的特性,以及针对各种脉冲噪声种类存在的优势以及改进方式。其次该文将介绍一些相关编码调制新方案以便于提高带限环境下的传输质量。结果表明这些优化工作显著地改善了系统性能,针对PLC整体信道特性系统参数的调制及编码调制传输优化方案将成为未来工作的研究热点。

关键词：差分混沌键控电力线通信脉冲噪声编码调制

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农村人口老龄化对农机社会化服务的影响

中国农机化学报 2024年第2期45卷 329-336页

作者：冯高缘戴浩樊帆长江大学经济与管理学院湖北荆州434023

我国已踏入深度老龄化社会,农机社会化服务有望成为纾解农村人口老龄化的新路径。基于2011—2021年中国31个省份(港澳台地区除外)的面板数据,采用固定效应模型实证分析农村人口老龄化对农机社会化服务的影响及作用机制。结果表明:农村... 详细信息

我国已踏入深度老龄化社会,农机社会化服务有望成为纾解农村人口老龄化的新路径。基于2011—2021年中国31个省份(港澳台地区除外)的面板数据,采用固定效应模型实证分析农村人口老龄化对农机社会化服务的影响及作用机制。结果表明:农村人口老龄化对农机社会化服务具有显著的促进作用;农村人口老龄化对农机社会化服务的促进作用存在显著的异质性;劳动力数量和劳动力价格在农村人口老龄化正向影响农机社会化服务的过程中发挥部分中介作用,其中介占比分别为38.2%、27.3%。据此,提出进一步完善农机社会化服务、推进区域协调发展、发展科技以减少对劳动力的依赖程度等建议。

关键词：农村人口老龄化农机社会化服务劳动力数量劳动力价格中介效应

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结合聚类边界采样的主动学习

智能系统学报 2024年第2期19卷 482-492页

作者：胡峰李路正代劲刘群重庆邮电大学计算机科学与技术学院重庆400065

主动学习是一种机器学习方法,需要选择最有价值的样本进行标注。目前,主动学习在应用时面临着一些挑战,其依赖分类器的先验假设,这容易导致分类器性能意外下降,同时需要一定规模的样本作为启动条件。聚类可以降低问题规模,是主动学习的... 详细信息

主动学习是一种机器学习方法,需要选择最有价值的样本进行标注。目前,主动学习在应用时面临着一些挑战,其依赖分类器的先验假设,这容易导致分类器性能意外下降,同时需要一定规模的样本作为启动条件。聚类可以降低问题规模,是主动学习的一种有效手段。为此,结合密度聚类边界采样,开展主动学习方法的研究。针对容易产生分类错误的聚类边界区域,通过计算样本密度,提出一种密度峰值聚类边界点采样方法;在此基础上,给出密度熵的定义,并利用密度熵对聚类边界区域进行启发式搜索,提出一种基于聚类边界采样的主动学习方法。试验结果表明,与文献中的5种主动学习算法相比,该算法能够以更少标记量获得同等甚至更高的分类性能,是一种有效的主动学习算法;在标记不足,无标签样本总量20%的情况下,算法在Accuracy、F-score等指标上取得较好的结果。

关键词：主动学习机器学习聚类边界密度峰值聚类几何采样信息熵版本空间主动聚类

Integrating Shipborne Images with Multichannel Deep Learning for Landslide Detection

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Journal of Earth Science 2024年第1期35卷 296-300页

作者： Pengfei feng Changdong Li Shuang Zhang Jie Meng Jingjing Long School of Mechanical Engineering and Electronic Information China University of GeosciencesWuhan 430074China Faculty of Engineering China University of GeosciencesWuhan 430074China Department of Civil Badong National Observation and Research Station of Geohazards China University of GeosciencesWuhan 430074China College of Geology Engineering and Geomatics Changan UniversityXi'an 710054China Department of Geosciences University of OsloOslo 0316Norway

0 INTRODUCTION.Landslide disasters in recession zones along riverbanks impose significant global social,economic,and ecological damage.These areas are particularly susceptible to landslides.They inflict significant harm due to fluctuating water levels(Meng et al.,2023;dai et al.,2021;Li et al.,2021).This,in turn,endangers the safety and accessibility of roads and waterways adjacent to rivers,and hydropower station and reservoir security(Yan et al.,2022;Guo et al.,2020;Tang et al.,2017).

关键词： reservoir Landslide Ship