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Single Mode Simulation Calculation of Oscillating Buoy Wave Energy Converter with A Slider

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China Ocean Engineering 2020年第4期34卷 547-557页

作者： XIAO Lei YOU Ya-ge wang zhen-peng ZHANG Ya-qun HUANG Shuo wang Wen-sheng Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640China Southern Marine Science and Engineering Guangdong Laboratory Guangzhou 511458China Key Laboratory of Renewable Energy Chinese Academy of SciencesGuangzhou 510640China Innovation Academy of South China Sea Ecology and Environmental Engineering Chinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

This paper presents an oscillating slider wave energy device which is based on a seabed anchoring and uses eagle beak as the *** self-compiled program uses the boundary element theory based on the simple Green’s function to solve the wave forces and hydrodynamic *** the equation of motion,the oscillation of the float and the capture width ratio are obtained by the modal *** influences of the shape of the eagle beak,the angle of the slider and the wave heading on the capture ability of the device are *** to the calculation results and the wave resources in the sea area,the optimal shape of the eagle beak and external damping can be selected to maximize the wave energy capture capability.

关键词： wave energy converter(WEC) Sharp Eagle hydrodynamic calculation eagle beak

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基于代理模型进化的高效神经网络架构搜索

计算机仿真 2024年第5期41卷 359-365页

作者：王龙业肖舒曾晓莉王圳鹏西南石油大学电气信息学院四川成都610500 西藏大学信息科学技术学院西藏拉萨850000 成都市排水有限责任公司四川成都610000

针对传统人工神经网络设计的时间复杂性与调试困难等问题,研究基于神经网络架构搜索的高效神经网络架构自动搜索方法,解决网络设计方案,提出了一种代理模型进化方法的高效神经网络搜索方法。上述方法将代理模型集成到遗传算法中,通过训... 详细信息

针对传统人工神经网络设计的时间复杂性与调试困难等问题,研究基于神经网络架构搜索的高效神经网络架构自动搜索方法,解决网络设计方案,提出了一种代理模型进化方法的高效神经网络搜索方法。上述方法将代理模型集成到遗传算法中,通过训练代理模型将预测卷积神经网络(Convolutional Neural Networks,CNN)性能问题转化为二值分类问题,加速网络评估过程。另外,在最新一代模型中,子模型通过继承父模型参数,在训练数据集上训练较少次数,加速最优网络的生成。所提方法在CIfar-10数据集上分类精度为95.6%,模型参数为3.4M;在Cifar-100数据集上分类精度为77.46%,模型参数为4.3M。由于使用代理模型和参数共享,新方法在cirar-10数据集上经过2.5天搜索获得性能优异的模型,避免了43.8%的候选CNN训练。

关键词：代理模型遗传算法适应度评估参数继承

Double-stranded DNA-nucleic acid dye complex-sensitized biocatalytic photosynthesis:Base pairing-switched regeneration of nicotinamide cofactor

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Journal of Energy Chemistry 2024年第7期94卷 618-624页

作者： zhen Dong Yanying wang Dan Li peng Wu College of Chemistry Sichuan UniversityChengdu 610064SichuanChina Analytical&Testing Centre State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610064SichuanChina School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007HenanChina

Photo-biocatalysis,the combination of photosensitization and biocatalysis,is an emerging solution for sunlight-based renewable *** is thus important to develop light antennas with both good light har-vesting and efficient electron ***,the intriguing electrical conductivity of dsDNA and its host effect(for nucleic acid dyes to harvest light)were explored simultaneously to develop a dsDNA-based light antenna for *** SYBR Green I(SG)as the example of the nucleic acid dye,the proposed SG-dsDNA system was found to be capable for visible-light-driven reduced nicotinamide adenine dinucleotide(NADH)regeneration,and the turnover frequency of which(1.35 min^(-1))exceeded most of the existing photocatalytic *** SG can only be hosted by dsDNA,meanwhile dsDNA can be formed through hybridization between single strand DNA and its complementary strand,the pro-posed system adds an extra control of the photocatalytic activity(DNA base pairing-based switch).When integrating the SG-dsDNA system with NADH-dependent horse liver alcohol dehydrogenase(HLADH),successful synthesis of 2-phenylpropanol(a crucial intermediates of profens manufacturing)was achieved.

关键词： Photosynthesis dsDNA SYBRGreenI TICT 2-phenylpropanol

Semiconductor fibers for textile integrated electronic systems

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National Science Review 2024年第6期11卷 100-101页

作者： Yuanyuan zheng zhen wang Peining Chen Huisheng peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceInstitute of Fiber Materials and Devices and Laboratory of Advanced Materials Fudan University

Over 5000 years of development, the functions of clothing have been mainly limited in warmth and modesty. With the development of smart fibers, fabrics are anticipated to revolutionize multidisciplinary applications, ... 详细信息

关键词： Fibers

Growth of two-inch free-standing heteroepitaxial diamond on Ir/YSZ/Si(001)substrates via laser-patterned templates

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Journal of Semiconductors 2024年第9期45卷 4-6页

作者： pengfei Qu peng Jin Guangdi Zhou zhen wang Zhanguo wang Laboratory of Solid-State Optoelectronic Information Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

As an ultra-wide bandgap semiconductor,diamond garners significant interest due to its exceptional physical properties^([1–3]).These superior characteristics make diamonds highly promising for applications in power electronics^([4]),deep-ultraviolet detectors^([5]),high-energy particle detectors^([6]),and quantum devices based on color centers^([7]).

关键词： template exceptional diamond

Enhanced piezoelectric properties and thermal stability of LiNbO_(3)-modified PNN-PZT ceramics

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Journal of Materiomics 2024年第5期10卷 995-1003页

作者： Wei peng Jianglei Chang Jianwei Zhao Dawei wang zhen Liu Genshui wang Shuxiang Dong Institute for Advanced Study Shenzhen UniversityShenzhen518060China Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China School of Instrumentation Science and Engineering Harbin Institute of TechnologyHarbin150080China Key Laboratory of Inorganic Functional Materials and Devices Shanghai Institute of CeramicsChinese Academy of SciencesShanghai201899China

Piezoelectric PZT ceramics with high piezoelectric properties and good thermal stability are urgently desired concerning the practical *** compositions of LiNbO_(3) modified Pb(Ni_(1/3)Nb_(2/3))O_(3)single bondPbZrO_(3)single bondPbTiO3 ceramics have been prepared in this *** effects of the introduction of the LiNbO3 on the system were comprehensively investigated in terms of the phase structure,microstructure,electric properties,and thermal stability behavior of the *** compositions are located in the morphotropic phase boundary(MPB)region,and the ratio of the rhombohedral(R)phase increases obviously with the increase of LiNbO_(3) *** increasing the LiNbO3 content,the piezoelectric properties were significantly *** sample added with 2%(in mole)LiNbO_(3) shows excellent electric properties,including T_(m)=185℃,εr=5,643,k_(p)=0.626,Q_(m)=51,d_(33)=902 pC/*** importantly,no thermal depolarization behavior was observed in the temperature range of 25–100℃.For PNN-PZT-x%LN ceramics,which is mainly attributed to the pinning effect resulted by the(Li_(Pb)-Nb_(Zr/Ti)) defect dipoles.

关键词： PNN-PZT LiNbO_(3) Piezoelectric property Defect dipole Thermal stability

Biomimetic design of highly flexible metal oxide nanofibrous membranes with exceptional mechanical performance for superior phosphopeptide enrichment

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Nano Research 2024年第5期17卷 4270-4278页

作者： Xue Mao zhen-zhen Li Dong-Lian Hao Wei-Dong Han Gao-peng Li Yao-Yu wang Kun Zhang School of Textile Science and Engineering Key Laboratory of Functional Textile Material and Product(Ministry of Education)Xi’an Polytechnic UniversityXi’an 710048China Key Laboratory of Magnetic Molecules&Magnetic Information Materials of the Ministry of Education School of Chemistry&Material ScienceShanxi Normal UniversityTaiyuan 030031China Department of Clinical Laboratory The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004China Shanghai iProteome Biotechnology Co. LtdShanghai 201210China College of Chemistry&Materials Science Northwest UniversityXi'an 710127China

Developing free-standing and mechanical robust membrane materials capable of superior enrichment of phosphopeptides for analyzing and identifying the specific phosphoproteome of cancer cells is significant in understanding the molecular mechanisms of cancer development and exploring new therapeutic approaches,but still a significant challenge in materials *** this end,we firstly constructed highly flexible ZrTiO_(4) nanofibrous membranes(NFMs)with excellent mechanical stability through a cost-effective and scalable electrospinning and subsequent calcination ***,to further increase the enrichment capacity of the phosphopeptide,the biomimetic TiO_(2)@ZrTiO_(4) NFMs with root hair or leaf like branch microstructure are developed by the hydrothermal post-synthetic modification of ZrTiO_(4) NFMs through growing unfurling TiO_(2) nanosheets onto the ZrTiO_(4) ***,remarkable flexibility and mechanical stability enable the resulting TiO_(2)@ZrTiO_(4) NFMs excellent practicability,while the biomimetic microstructure allows it outstanding enrichment ability of the phosphopeptide and identification ability of the specific phosphoproteins in the digest of cervical cancer ***,6770 phosphopeptides can be enriched by TiO_(2)@ZrTiO_(4) NFMs(2205 corresponding phosphoproteins can be identified),and the value is much higher than that of ZrTiO_(4) NFMs(6399 phosphopeptides and 2132 identified phosphoproteins)and commercial high-performance TiO_(2) particles(4525 phosphopeptides and 1811 identified phosphoproteins).These results demonstrate the super ability of TiO_(2)@ZrTiO_(4) NFMs in phosphopeptide enrichment and great potential for exploring the pathogenesis of cancer.

关键词： inorganic nanofibers flexible ceramic nanofibrous membranes biomimetic materials exceptional mechanical performance flexibility

Excitonic optical properties in monolayer SnP_(2)S_(6)

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Chinese Physics B 2024年第10期33卷 371-375页

作者： peng-Yuan Chen zhen Quan Shu-Dong wang School of Physical Science and Technology Inner Mongolia UniversityHohhot 010021China

Quantum confinement effect and reduced dielectric screening in two-dimensional(2D)dramatically enhance theelectron-hole *** this work,we use many-body perturbation theory and Bethe-Salpeter equation(BSE)toinvestigate the electronic and excitonic optical properties of monolayer SnP_(2)S_(6).Our findings reveal that the excitoniceffect dominates the optical absorption spectra in the visible light range,and the lowest-energy exciton X0 in monolayerSnP_(2)S_(6)is optically bright with the binding energy of 0.87 eV and the radiative lifetime of~10^(-11)s,which is highly advantageousto the *** importantly,the absence of optically forbidden states below the bright statesX0 would give rise to a high quantum efficiency of 2D SnP_(2)S_(6).We also find that applied biaxial strain can further shortenthe radiative lifetime of the bright *** results imply that 2D SnP_(2)S_(6)is a promising candidate for the optoelectronicdevices.

关键词： excitons radiative lifetime SnP_(2)S_(6)

Number of Solitons Emerged in the Initial Profile of Shallow Water Using Convolutional Neural Networks

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Journal of Systems Science & Complexity 2024年第2期37卷 463-479页

作者： wang zhen CUI Shikun School of Mathematical Sciences Dalian University of TechnologyDalian 116024China School of Mathematical Sciences Beihang UniversityBeijing 100191China

The soliton resolution conjecture proposes that the initial value problem can evolve into a dispersion part and a soliton ***,the problem of determining the number of solitons that form in a given initial profile remains unsolved,except for a few specific *** this paper,the authors use the deep learning method to predict the number of solitons in a given initial value of the Korteweg-de Vries(KdV)*** leveraging the analytical relationship between Asech^(2)(x)initial values and the number of solitons,the authors train a Convolutional Neural Network(CNN)that can accurately identify the soliton count from spatio-temporal *** trained neural network is capable of predicting the number of solitons with other given initial values without any additional *** extensive calculations,the authors demonstrate the effectiveness and high performance of the proposed method.

关键词： Convolutional neural network deep learning method KdV equation soliton