检索结果-南通市图书馆

Artificial Intelligence Meets Flexible Sensors:Emerging Smart Flexible Sensing Systems Driven by Machine Learning and Artificial Synapses

引用

Nano-Micro Letters 2024年第1期16卷 235-273页

作者： Tianming Sun Bin Feng jinpeng Huo Yu Xiao Wengan Wang Jin Peng Zehua li Chengjie Du Wenxian Wang Guisheng Zou Lei liu Department of Mechanical Engineering State Key Laboratory of Tribology in Advanced EquipmentKey Laboratory for Advanced Manufacturing by Materials Processing TechnologyMinistry of Education of PR ChinaTsinghua UniversityBeijing 100084People’s Republic of China College of Materials Science and Engineering Shanxi ProvinceTaiyuan University of TechnologyTaiyuan 030024People’s Republic of China

The recent wave of the artificial intelligence(AI)revolution has aroused unprecedented interest in the intelligentialize of human *** an essential component that bridges the physical world and digital signals,flexible sensors are evolving from a single sensing element to a smarter system,which is capable of highly efficient acquisition,analysis,and even perception of vast,multifaceted *** challenging from a manual perspective,the development of intelligent flexible sensing has been remarkably facilitated owing to the rapid advances of brain-inspired AI innovations from both the algorithm(machine learning)and the framework(artificial synapses)*** review presents the recent progress of the emerging AI-driven,intelligent flexible sensing *** basic concept of machine learning and artificial synapses are *** new enabling features induced by the fusion of AI and flexible sensing are comprehensively reviewed,which significantly advances the applications such as flexible sensory systems,soft/humanoid robotics,and human activity *** two of the most profound innovations in the twenty-first century,the deep incorporation of flexible sensing and AI technology holds tremendous potential for creating a smarter world for human beings.

关键词： Flexible electronics Wearable electronics Neuromorphic Memristor Deep learning

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Polyp-PVT:Polyp Segmentation with Pyramid Vision Transformers

引用

CAAI Artificial Intelligence Research 2023年第1期2卷 1-15页

作者： Bo Dong Wenhai Wang Deng-Ping Fan jinpeng li Huazhu Fu ling Shao College of Computer Science Nankai UniversityTianjin 300350China Shanghai Artificial Intelligence Laboratory Shanghai 200232China Computer Vision Lab Inception Institute of Artificial IntelligenceAbu DhabiUnited Arab Emirates Institute of High Performance Computing Agency for ScienceTechnology and ResearchSingapore 138632Singapore UCAS-Terminus AI Lab Terminus GroupChongqing 400042China

Most polyp segmentation methods use convolutional neural networks(CNNs)as their backbone,leading to two key issues when exchanging information between the encoder and decoder:(1)taking into account the differences in contribution between different-level features,and(2)designing an effective mechanism for fusing these *** existing CNN-based methods,we adopt a transformer encoder,which learns more powerful and robust *** addition,considering the image acquisition influence and elusive properties of polyps,we introduce three standard modules,including a cascaded fusion module(CFM),a camouflage identification module(CIM),and a similarity aggregation module(SAM).Among these,the CFM is used to collect the semantic and location information of polyps from high-level features;the CIM is applied to capture polyp information disguised in low-level features,and the SAM extends the pixel features of the polyp area with high-level semantic position information to the entire polyp area,thereby effectively fusing cross-level *** proposed model,named Polyp-PVT,effectively suppresses noises in the features and significantly improves their expressive *** experiments on five widely adopted datasets show that the proposed model is more robust to various challenging situations(e.g.,appearance changes,small objects,and rotation)than existing representative *** proposed model is available at https://***/DengPingFan/Polyp-PVT.

关键词： polyp segmentation pyramid vision transformer colonoscopy computer vision

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research on electrocatalytic behavior of LaNb2O7/MnTMPyP self-assembled film toward oxidation of nitrite

Research on electrocatalytic behavior of LaNb2O7/MnTMPyP sel...

引用

中国化学会第九届全国无机化学学术会议

作者： Binbin Pan jinpeng li Xiaobo Zhang Juanjuan Ma Zhiwei Tong School of Chemical Engineering and Technology China University of Mining and Technology School of Chemical Engineering Huaihai Institute of Technology

Laminar nanocomposite of LaNb2O7/MnTMPyP [5, 10, 15, 20-tetrakis（N-methylpyridinium-4-yl）porphyrinato manganese（Ⅲ）] was fabricated via electrostatic interaction between the colloidal dispersion of LaNb2O- 7nanosheets and manganese porphyrin aqueous solution. Several analytic techniques such as XRD, IR,UV-vis and SEM were used to characterize the obtained products. Furthermore, the well-dispersed and stable colloidal suspension of LaNb2O- 7nanosheets whose zeta potential value is-51.9 mV was monitored by a Zetasizer Nano instrument. On the other hand, the cyclic voltammetry measurements of LaNb2O7/MnTMPyP film modified glass carbon electrode exhibited excellent electrocatalytic activities toward oxidation of nitrite with the oxidation peak current increasing linearly with the square root of scan rate, suggesting that the electrocatalytic process was controlled by nitrite diffusion.

关键词： LaNb2O-7nanosheets exfoliation/restacking nitrite oxidation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

利用赫尔默特方差分量估计法定权的相对定向方法

引用

华中科技大学学报（自然科学版） 2016年第4期44卷 12-17页

作者：李劲澎姜挺龚志辉江刚武信息工程大学地理空间信息学院河南郑州450001 地理信息工程国家重点实验室陕西西安710054

为了解决相对定向过程中匹配得到定向点的合理定权问题,提高解算的精度和可靠性,提出了结合赫尔默特方差分量估计和选权迭代粗差剔除的相对定向方法.在格鲁伯区域,通过SURF(快速鲁棒)特征匹配和RANSAC(随机抽取一致性)算法剔除误匹配,... 详细信息

为了解决相对定向过程中匹配得到定向点的合理定权问题,提高解算的精度和可靠性,提出了结合赫尔默特方差分量估计和选权迭代粗差剔除的相对定向方法.在格鲁伯区域,通过SURF(快速鲁棒)特征匹配和RANSAC(随机抽取一致性)算法剔除误匹配,提取大量亚像素级精度的相对定向点,利用赫尔默特方差分量估计法估算6个格鲁伯区域对应6组观测值的单位权中误差,并给其定权,然后使用选权迭代法进行粗差剔除,最终得到相对方位元素.利用相对方位元素校正后,航空影像和无人机影像上下视差最大值分别由传统方法的1.045像素和2.093像素减小到0.376像素和0.766像素;利用半全局匹配方法生成的视差图,明显优于传统方法生成的视差图.

关键词：相对定向特征匹配赫尔默特方差分量估计定权选权迭代

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Allotetraploidization event of Coptis chinensis shared by all Ranunculales

引用

Horticultural Plant Journal 2024年第1期10卷 288-303页

作者： Yan Zhang Weina Ge Jia Teng Yanmei Yang Jianyu Wang Zijian Yu Jiaqi Wang Qimeng Xiao Junxin Zhao Shaoqi Shen Yishan Feng Shoutong Bao Yu li Yuxian li Tianyu Lei Yuxin Pan Lan Zhang jinpeng Wang Department of Bioinformatics School of Life SciencesNorth China University of Science and TechnologyTangshanHebei 063000China School of life Sciences North China University of Science and TechnologyTangshanHebei 063000China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Coptis chinensis Franch.,also named Chinese goldthread is a member of Ranunculaceae in the order Ranunculales and represents an important lineage of early eudicots with traditional medicinal *** our study,by using syntenic analysis combined with phylogenomic analysis of *** and four other representative genomes from basal and core eudicots,we confirmed that the WGD event in *** was shared by Aquilegia coerulea and Papaver somniferum *** quickly occurred after Ranunculales diverged from other eudicots,likely a Ranunculales common tetraploidization(RCT).The synonymous nucleotide substitutions at synonymous sites distribution of syntenic blocks across these genomes showed that the evolutionary rate of the *** genome is faster than that of the *** genome by approximately 13.7%,possibly due to Papaveraceaes having an additional special tetraploidization event(PST).After Ks correction,the RCT dated to 115—130 million years ago(MYA),which was close to the divergence of Ranunculaceaes and Papaveraceaes approximately115.45—130.51 ***,we identified homologous genes related to polyploidization and speciation and constructed multiple sequence alignments with different reference ***,the event-related subgenomes in the basal genomes all showed genomic fractionation bias,suggesting a likely allopolyploid nature of the RCT,PST and T-Alpha and T-Beta events in Tetracentron *** addition,we detected that the sixteen P450 subfamilies were markedly expanded in the genomes of Ranunculales,and most of them were related to the RCT and PST *** constructed a new platform for Early Eudicot Comparative Genomic Research(http://***/***)to store more *** summary,our findings support the WGD of *** shared by Ranunculales,which is likely an allotetraploidization *** present effort offered new insights into the evolution of key polyploidization events and the genes related to second

关键词： Coptis chinensis Ranunculales Polyploidization Genomic fractionation P450 genes

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

3种彩色叶玉簪光合日变化

引用

东北林业大学学报 2011年第10期39卷 56-58,70页

作者：李金鹏董然吉林农业大学长春130118

采用CIRAS-2光合测定仪测定3种彩叶玉簪的光合参数。光响应曲线应用叶子飘新模型进行拟合并求得光饱和点、光补偿点。结果表明:3种玉簪的光合速率均呈双峰曲线,峰值出现在10:00时和16:00时,且第1峰值大于第2峰值,均有明显的光合"午休"现... 详细信息

采用CIRAS-2光合测定仪测定3种彩叶玉簪的光合参数。光响应曲线应用叶子飘新模型进行拟合并求得光饱和点、光补偿点。结果表明:3种玉簪的光合速率均呈双峰曲线,峰值出现在10:00时和16:00时,且第1峰值大于第2峰值,均有明显的光合"午休"现象,这主要是受非气孔限制因素影响;其光饱和点、光补偿点分别在776.24～802.580、17.50～19.68μmol.m-2.s-1,3种玉簪均表现出栽培C3型植物的典型特征,具有较强的耐荫能力,耐荫性由强到弱依次是:金头饰玉簪>黄金叶玉簪>金鹰玉簪;相关性分析表明:3种玉簪光合速率与胞间CO2摩尔分数呈显著负相关(P<0.05),金头饰玉簪的光合速率与蒸腾速率呈显著正相关(r=0.780*,P<0.05),金鹰玉簪与黄金叶玉簪的光合速率均与光合有效辐射呈显著正相关(r=0.803*,r=0.762*,P<0.05),与其他因子呈不显著正或负相关关系;金头饰玉簪对环境的适应性明显优于其他两种玉簪,推广应用前景好。

关键词：玉簪光合日变化光响应耐荫性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A likely paleo-autotetraploidization event shaped the high conservation of Nyssaceae genome

引用

Horticultural Plant Journal 2024年第3期10卷 911-930页

作者： Yishan Feng Zhenyi Wang Qimeng Xiao Jia Teng Jianyu Wang Zijian Yu Jiaqi Wang Qiang Xu Yan Zhang Shaoqi Shen Shoutong Bao Yu li Zimo Yan Yue Ding Zihan liu Yuxian li Tianyu Lei Min Yuan Xiu-Qing li jinpeng Wang Department of Bioinformatics School of Life SciencesNorth China University of Science and TechnologyTangshanHebei 063000China Fredericton Research and Development Centre Agriculture and Agri-Food CanadaFrederictonNew Brunswick E3B 4Z7Canada State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Scientific knowledge about the ancestral genome of core eudicot plant kingdom can potentially have profound impacts on both basic and applied research,including evolution,genetics,genomics,ecology,agriculture,forestry,and global *** investigate which plant conserves best the core eudicots common ancestor genome,we compared Arcto-Tertiary relict Nyssaceae and 30 other eudicot plant *** genomes of Davidia involucrata(a known living fossil),Camptotheca acuminata and Nyssa sinensis,one per existent genus of Nyssaceae,were performed comparative genomic *** found that Nyssaceae originated from a single Nyssaceae common tetraploidization event(NCT)-autotetraploidization 28-31 Mya after the core eudicot common hexaploidization(ECH).We identified Nyssaceae orthologous and paralogous genes,determined its chromosomal evolutionary trajectory,and reconstructed the Nyssaceae most recent ancestor *** genome contained the entire seven paleochromosomes and 17 ECH-generated eudicot common ancestor chromosomes and was the slowest in mutation among the analyzed 42 species of 31 plant *** both its high retention of paleochromosomes and its low mutation rate,*** provides the best case in conservation of the core eudicot paleogenome.

关键词： Nyssaceae Polyploidization Multigenome alignment Evolutionary rate Autotetraploidization Karyotype evolution

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于圆载频干涉图相位解调技术的点衍射干涉术

引用

光学学报 2015年第1期35卷 144-152页

作者：李金鹏陈磊朱文华胡芬南京理工大学电子工程与光电技术学院江苏南京210094

为测量光学系统出射波前以及动态波前,提出一种基于圆载频干涉图相位解调技术的点衍射干涉术。在传统点衍射干涉仪中调整点衍射板轴向离焦量引入圆载频,通过二阶极坐标变换可以将圆载频干涉图转换为具有准线性载频特征的干涉图,从而在... 详细信息

为测量光学系统出射波前以及动态波前,提出一种基于圆载频干涉图相位解调技术的点衍射干涉术。在传统点衍射干涉仪中调整点衍射板轴向离焦量引入圆载频,通过二阶极坐标变换可以将圆载频干涉图转换为具有准线性载频特征的干涉图,从而在频域中将连续频谱转换为准离散谱,采用傅里叶变换法即可提取相位。仿真波面为利用36项Zernike多项式随机生成,在离焦17λ条件下相位恢复误差的均方根值为0.002λ。实验测量了F/10标准镜头岀射波面,测量结果与SID-4波前探测器一致;实验还实现了有机玻璃材料吸收特性的动态检测。因此采用该技术能够实现光学系统的检测以及动态波面实时测量。

关键词：测量光学测量点衍射干涉术圆载频相位解调

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

动态干涉仪的位相光栅衍射效率研究

引用

红外与激光工程 2015年第9期44卷 2696-2701页

作者：李金鹏陈磊方波朱文华南京理工大学电子工程与光电技术学院江苏南京210094 中国科学院安徽光学精密机械研究所安徽合肥230031

为了解决普通二维光栅在动态干涉术中光能量利用不足的问题,使用标量衍射理论和傅里叶分析法对矩形正交位相光栅和棋盘型位相光栅的衍射效率进行推导,分别对两种光栅的最佳工作级次选择策略进行研究。分析结果表明,当分光器件为矩形正... 详细信息

为了解决普通二维光栅在动态干涉术中光能量利用不足的问题,使用标量衍射理论和傅里叶分析法对矩形正交位相光栅和棋盘型位相光栅的衍射效率进行推导,分别对两种光栅的最佳工作级次选择策略进行研究。分析结果表明,当分光器件为矩形正交位相光栅时,应选择(0,±1)级与(±1,0)级作为动态干涉仪的工作级次,光能量利用率达到54.4%;当分光器件为棋盘位相光栅时,应选择(±1,±1)级作为动态干涉仪的工作级次,光能量利用率达到65%。实验对比了两种光栅在动态干涉仪上的应用效果,当选用(±1,±1)级作为工作级次时,结果表明使用棋盘型位相光栅的应用效果优于矩形正交位相光栅。因此在动态干涉仪中使用棋盘位相光栅并选用(±1,±1)级作为工作级次能够消除光能量利用不足对测量造成的影响。

关键词：光学干涉测量动态干涉仪位相光栅衍射效率

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

形状记忆合金数值模型的不确定性分析

引用

土木与环境工程学报（中英文） 2020年第6期42卷 112-118页

作者：李金朋陈城侯和涛山东大学土建与水利学院济南250061 山东大学山东省绿色建筑智能建造工程技术研究中心济南250061 山东大学山东省工业技术研究院工业化建筑智能建造协同创新中心济南250061 旧金山州立大学工程学院旧金山94132

形状记忆合金(shape memory alloy,简称为SMA)具有“超弹性”,即在受到应力而发生较大变形并卸载后,可以恢复原始形状,并在这个过程中耗散能量,在建筑抗震和桥梁振动控制中具有广阔的应用前景。SMA的模型参数通常由优化方法来确定,然后... 详细信息

形状记忆合金(shape memory alloy,简称为SMA)具有“超弹性”,即在受到应力而发生较大变形并卸载后,可以恢复原始形状,并在这个过程中耗散能量,在建筑抗震和桥梁振动控制中具有广阔的应用前景。SMA的模型参数通常由优化方法来确定,然后用于装有SMA装置的结构地震时程响应分析中。利用Metropolis-Hasting算法(简称为MH算法)中的改进算法DRAM方法(延迟拒绝及自适应采样),基于经过“预拉伸”和热处理的SMA棒材循环拉伸试验结果,对SMA改进的Graesser&Cozzarelli模型参数进行采样,从SMA的本构模型参数和耗能能力两个方面分析了SMA材料的不确定性。建立了各参数的后验分布,并得到了参数两两之间的相关性,结果可用于概率模型的建立及基础模型数学形式的研究。研究表明,在累积概率密度为15%时,材料的能量耗散能力相对误差高达20%;累积概率密度为85%时,相对误差为10%。

关键词：形状记忆合金不确定性分析马尔可夫链蒙特卡罗方法概率建模

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：