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

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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

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Four-level phase pair encoding and decoding with single interferometric phase retrieval for holographic data storage

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Chinese Optics Letters 2018年第3期16卷 67-70页

作者： Xiao Lin Yong Huang Yang Li Jinyan liu jinpeng liu Ruidan Kang Xiaodi Tan School of Optics and Photonics Beijing Institute of Technology Beijing 100081 China

We propose four-level phase pair encoding and decoding with single interferometric phase retrieval for holographic data storage. Inherent with phase pair encoding, phase shifting is generated by assigning a certain phase difference between two pixels of the phase pair. Multiple phase shifting operations are not required. In addition, a phase-readout reference beam can be a plane beam with an arbitrary phase in our method because phase shifting can be encoded on the phase-only spatial light modulator easily and accurately. Therefore, our method can not only increase the data transfer rate, but also improve the robustness of the holographic data storage system. Although the code rate of our method needs to be sacrificed by half, the code rate is still twice that of amplitude code when four-level phase encoding is used. We demonstrated experimentally that there is only a 1×10^-2 order of bit error rate before error correcting, which is acceptable. We believe our method will further advance the phase-modulated holographic data storage technique.

关键词： Bit error rate Holographic memory Phase modulation Phase retrieval Phase shift Spatial light modulators

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Microbially-mediated formation of Ca-Fe carbonates during dissimilatory ferrihydrite reduction:Implications for the origin of sedimentary ankerite

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Science China Earth Sciences 2024年第1期67卷 208-221页

作者： Deng liu jinpeng CAO Shanshan YANG Yating YIN Pengcong WANG Dominic PAPINEAU Hongmei WANG Xuan QIU Genming LUO Zongmin ZHU Fengping WANG State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China School of Environmental Studies China University of GeosciencesWuhan 430074China London Centre for Nanotechnology University College LondonLondon WC1H 0AHUK Department of Earth Sciences University College LondonLondon WC1E 6BTUK Center for Planetary Sciences University College London and Birkbeck College LondonLondon WC1E 6BTUK State Key Laboratory of Microbial Metabolism State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The origin of sedimentary dolomite has become a long-standing problem in the Earth *** carbonate minerals like ankerite have the same crystal structure as dolomite,hence their genesis may provide clues to help solving the dolomite *** purpose of this study was to probe whether microbial activity can be involved in the formation of ***-carbonation experiments associated with microbial iron reduction were performed in batch systems with various concentrations of Ca^(2+)(0–20 mmol/L),with a marine iron-reducing bacterium Shewanella piezotolerans WP3 as the reaction mediator,and with lactate and ferrihydrite as the respective electron donor and *** biomineralization data showed that Ca-amendments expedited microbially-mediated ferrihydrite reduction by enhancing the adhesion between WP3 cells and ferrihydrite *** bioreduction,siderite occurred as the principal secondary mineral in the Ca-free ***,Ca-Fe carbonates were formed when Ca^(2+)ions were *** CaCO_(3) content of microbially-induced Ca-Fe carbonates was positively correlated with the initial Ca2+*** Ca-Fe carbonate phase produced in the 20 mmol/L Ca-amended biosystems had a chemical formula of Ca_(0.8)Fe_(1.2)(CO_(3))_(2),which is close to the theoretical composition of *** ankeritelike phase was nanometric in size and spherical,Ca-Fe disordered,and structurally *** simulated diagenesis experiments further demonstrated that the resulting ankerite-like phase could be converted into ordered ankerite under hydrothermal *** introduced the term“proto-ankerite”to define the Ca-Fe phases that possess near-ankerite stoichiometry but disordered cation *** the basis of the present study,we proposed herein that microbial activity is an important contributor to the genesis of sedimentary ankerite by providing the metastable Ca-Fe carbonate precursors.

关键词： Ankerite Proto-ankerite Microbial iron reduction Dolomite problem Mineral transformation

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Collinear holographic data storage technologies

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Opto-Electronic Advances 2020年第3期3卷 25-32页

作者： Xiao Lin jinpeng liu Jianying Hao Kun Wang Yuanying Zhang Hui Li Hideyoshi Horimai Xiaodi Tan College of Photonic and Electronic Engineering Fujian Normal UniversityFuzhou 350117China School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China HolyMine Corporation 2032-2-301 OokaNumazuShizuoka 410-0022Japan

In the era of information explosion,the demand of data storage is increased *** data storage technology is one of the most promising next-generation data storage technologies due to its high storage density,fast data transfer rate,long data life time and less energy *** holographic data storage technology is the typical solution of the holographic data storage technology which owns a more compact,compatible and practical *** paper gives a brief review of holographic data storage,introduces collinear holographic data storage technology and discusses phase modulation technology being used in the holographic data storage system to achieve higher storage density and higher data transfer rate.

关键词： holographic data storage collinear holography high density phase modulation

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ZmCYP90D1 regulates maize internode development by modulating brassinosteroid-mediated cell division and growth

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The Crop Journal 2024年第1期12卷 58-67页

作者： Canran Sun Yang liu Guofang Li Yanle Chen Mengyuan Li Ruihua Yang Yongtian Qin Yongqiang Chen jinpeng Cheng Jihua Tang Zhiyuan Fu Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of Agronomy Henan Agricultural UniversityZhengzhou 450046HenanChina The Shennong Laboratory Zhengzhou 450002HenanChina Hebi Academy of Agricultural Sciences Hebi 458030HenanChina Yunnan Tang Jihua Expert Workstation/Zhaotong Academy of Agricultural Sciences Zhaotong 657000YunnanChina

Plant height(PH)is associated with lodging resistance and planting density,which is regulated by a complicated gene *** this study,we identified a spontaneous dwarfing mutation in maize,m30,with decreased internode number and length but increased internode diameter.A candidate gene,ZmCYP90D1,which encodes a member of the cytochrome P450 family,was isolated by map-based ***90D1 was constitutively expressed and showed highest expression in basal internodes,and its protein was targeted to the nucleus.A G-to-A substitution was identified to be the causal mutation,which resulted in a truncated protein in *** of function of ZmCYP90D1 changed expression of hormoneresponsive genes,in particular brassinosteroid(BR)-responsive genes which is mainly involved in cell cycle regulation and cell wall extension and modification in *** concentration of typhasterol(TY),a downstream intermediate of ZmCYP90D1 in the BR pathway,was reduced.A haplotype conferring dwarfing without reducing yield was ***90D1 was inferred to influence plant height and stalk diameter via hormone-mediated cell division and cell growth via the BR pathway.

关键词： Maize ZmCYP90D1 BR biosynthesis Dwarf plant

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Adaptive RBF neural network control of a small-scale coaxial rotor unmanned aerial vehicle

Adaptive RBF neural network control of a small-scale coaxial...

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第40届中国控制会议

作者： jinpeng liu Xingju Lu Chi Peng Jianjun Ma College of Intelligence Science and Technology National University of Defense Technology

In this paper, a backstepping-based adaptive neural network control scheme is proposed for a small coaxial rotor unmanned aerial vehicle（CRUAV）. Firstly, the mathematical dynamic model of the CRUAV is established and the state space expression of the heave-yaw subsystem is obtained. Then, an RBF neural network（RBFNN） adaptive control architecture based on the idea of backstepping control is proposed to eliminate the external disturbance in practical applications, and the stability of the closed-loop system is analyzed by using the Lyapunov method. Finally, the effectiveness of the presented method is verified in numerical simulations.

关键词： Coaxial rotor unmanned aerial vehicles Backstepping RBF neural network adaptive control

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Two-dimensional materials for tunable and nonlinear metaoptics

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Advanced Photonics 2024年第3期6卷 16-34页

作者： Zeng Wang Kandammathe Valiyaveedu Sreekanth Meng Zhao jinpeng Nong Yincheng liu Jinghua Teng Agency for Science Technology and Research(A^(*)STAR)Institute of Materials Research and Engineering(IMRE)Singapore

Metaoptics formed by ultrathin and planar building blocks enable compact and efficient optical devices that manipulate light at the *** development of tunable metaoptics holds the promise of miniaturized and efficient optical systems that can dynamically adapt to changing conditions or requirements,propelling innovations in fields ranging from telecommunication and imaging to quantum computing and ***-dimensional(2D)materials show strong promise in enabling tunable metaoptics due to their exceptional electronic and optical properties from the quantum confinement within the atomically thin *** this review,we discuss the recent advancements and challenges of 2D material-based tunable metaoptics in both linear and nonlinear regimes and provide an outlook for prospects in this rapidly advancing area.

关键词： metaoptics tunable metaoptics two-dimensional optoelectronics nonlinear optics excitons polaritons

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采用支持向量机和模拟退火算法的中长期负荷预测方法

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中国电机工程学报 2011年第16期31卷 63-66页

作者：李瑾刘金朋王建军北京科技大学经济管理学院北京市海淀区100083 华北电力大学经济与管理学院北京市昌平区102206

准确的中长期负荷预测能够提高电力系统的经济效益和社会效益。分析了支持向量机(support vector machine,SVM)模型,并针对利用支持向量机进行负荷预测需要人为地确定相关参数的不足,提出了利用支持向量机进行中长期预测的新方法。该方... 详细信息

准确的中长期负荷预测能够提高电力系统的经济效益和社会效益。分析了支持向量机(support vector machine,SVM)模型,并针对利用支持向量机进行负荷预测需要人为地确定相关参数的不足,提出了利用支持向量机进行中长期预测的新方法。该方法利用模拟退火(simulated annealing,SA)算法自动优化参数。实例验证结果表明,所提出的方法可以有效地选取支持向量机模型的参数,降低支持向量机的建模误差和测试误差,该方法与利用默认参数支持向量机进行预测的方法相比,有效地提高了负荷预测精度。

关键词：电力系统中长期负荷预测模拟退火支持向量机

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基于地面激光扫描数据的单木分枝结构参数自动提取

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林业科学 2016年第3期52卷 121-128页

作者：刘金鹏张怀清刘闽李永亮中国林业科学研究院资源信息研究所北京100091

【目的】应用地面激光扫描(TLS)数据提取单木点云骨架模型,提出一种基于骨架模型的单木分枝结构及枝长、分枝角度信息自动提取方法,为单木参数化建模与森林可视化模拟提供数据基础,并丰富林业参数调查手段。【方法】应用地面激光扫描仪... 详细信息

【目的】应用地面激光扫描(TLS)数据提取单木点云骨架模型,提出一种基于骨架模型的单木分枝结构及枝长、分枝角度信息自动提取方法,为单木参数化建模与森林可视化模拟提供数据基础,并丰富林业参数调查手段。【方法】应用地面激光扫描仪器FARO,以1/4分辨率、测速244 000点·s^(-1)获取试验区3株单木的点云数据。首先,采用Skel Tre算法对带有噪声的TLS数据生成骨架模型;然后,基于该骨架模型和图深度优先搜索算法提出一种自动提取分枝结构的方法,根据骨架模型邻边的拓扑关系搜索与各个分枝相连接的节点,每个节点中包含该节点主导方向、邻边个数及位置的属性,通过这些属性判定节点是否为分枝节点;由于分枝节点存在一定的位置误差,因此采用圆柱拟合法修正着枝点处分枝的延伸方向,降低应用原始骨架模型估计的分枝角度值的误差,以获取较为精确的分枝角度θ;最后,根据修正后的角度大小划分不同级别的分枝结构,通过计算分枝的骨架线段总长度,估计分枝的枝长并与野外实测值进行对比验证。【结果】试验单木的分枝结构明确,实现了枝长与角度的自动获取,共提取出22条一级枝、43条二级枝;枝长的实测值与估计值回归方程为Y=1.003X+0.03,R^2=0.998,二者的均方根误差为0.029 m;骨架模型估计的分枝角度与实测角度的回归方程为Y=0.672X+16.779,R^2=0.356,二者的均方根误差为20.45°;应用圆柱拟合法修正后的分枝角度与实测角度的回归方程为Y=1.008X+0.18,R^2=0.975,二者的均方根误差为3.44°。【结论】基于骨架模型并以拟合圆柱法修正分枝角度提取单木形态结构参数的算法能够比较准确地提取单木分枝结构,枝长的提取精度较高,圆柱拟合法能够有效改善骨架模型估计角度的精度。

关键词：地面三维激光扫描骨架模型枝长形态结构分枝角度

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单隐层神经网络输入权值的新算法

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计算机应用研究 2019年第12期36卷 3666-3669页

作者：刘金澎田大钢上海理工大学管理学院

针对传统极端学习机输入权值与隐层阈值随机设定的问题,提出了输出值反向分配算法,其在传统极端学习机的基础上,通过优化方法得到最优输出值分配系数,并利用最小二乘法确定网络输入参数。将该算法应用到常用数据集进行实验,并与其他极... 详细信息

针对传统极端学习机输入权值与隐层阈值随机设定的问题,提出了输出值反向分配算法,其在传统极端学习机的基础上,通过优化方法得到最优输出值分配系数,并利用最小二乘法确定网络输入参数。将该算法应用到常用数据集进行实验,并与其他极端学习机改进算法进行比较,显示其具有良好的学习以及泛化能力,能够得到简单的网络结构,证明了算法的有效性。

关键词：极端学习机单隐层神经网络优化方法输出值反向分配

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