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SAM3D: zero-shot 3D object detection via the segment anything model

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Science China(Information Sciences) 2024年第4期67卷 331-332页

作者： Dingyuan ZHANG Dingkang LIANG hongcheng yang Zhikang ZOU Xiaoqing YE Zhe LIU Xiang BAI School of Artificial Intelligence and Automation Huazhong University of Science and Technology Baidu Inc. School of Electronic Information and Communication Huazhong University of Science and Technology

In the past few years, foundation models have thrived and succeeded in linguistic and visual tasks, showing astonishing zero-shot and few-shot capabilities. Their advances encourage researchers and industries to extend the boundaries of what artificial intelligence can do and have shown some fantastic products(e.g., ChatGPT [1]) with the potential to change the world.

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A novel Na_(1−x)K_(x)TaO_(3)perovskite microwave dielectric ceramic with high permittivity and high positive temperature coefficient

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Journal of Advanced Ceramics 2023年第11期12卷 2053-2061页

作者： Liu Tang hongcheng yang Enzhu Li Chaowei Zhong State Key Laboratory of Electronic Thin Films and Integrated Devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054China National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 611731China School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China

A novel Na_(1−x)K_(x)TaO_(3)(x=0,0.025,0.05,0.075,0.1,and 0.15)ceramic with high permittivity and high positive temperature coefficient was synthesized via the conventional solid-state *** samples were determined to be pure phase orthorhombic NaTaO3 structure of space group Pmcn,and larger grain and lower porosity were observed after adding an appropriate amount of K+*** Q×f value is majored by the packing fraction and grain size,while the value ofτf is influenced by Ta–O bond *** Na_(0.95)K_(0.05)TaO_(3) ceramic possesses excellent dielectric properties ofεr=164.29,Q×f=9091 GHz(f=3.15 GHz),tanδ=3.46×10^(–4),τf=+809.52 ppm/℃,sintered at 1550℃.Compared with NaTaO_(3) ceramics,the Na_(1−x)K_(x)TaO_(3)ceramics prepared in this study demonstrate higher dielectric constants and higher positive temperature coefficients,which are promising for device miniaturization andτf compensators.

关键词： Na_(1−x)K_(x)TaO_(3)ceramics high permittivity high positive temperature coefficient perovskite

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大悬臂预应力混凝土箱梁桥拼宽方案受力分析

现代交通技术 2024年第1期21卷 1-4,40页

作者：杨红成杨晔陆耀清苏交科集团股份有限公司南京210019

以沪武高速公路太仓至常州段的望虞河大桥改造工程为背景,研究大悬臂预应力混凝土箱梁的拼宽方案,利用Midas软件建立全桥的有限元模型,分析桥梁在活载、基础沉降、收缩徐变作用下的结构受力特点,总结各拼宽方案的关键问题,并提出施工建议。

关键词：拼宽大悬臂混凝土箱梁横向预应力

基于粒子群算法的数字控制伺服系统离线参数自寻优方法研究

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导弹与航天运载技术（中英文） 2024年第1期 83-86,106页

作者：杨弘枨刘山许文波张博李沛文北京精密机电控制设备研究所北京100076

由于伺服阀小信号流量特性存在一定散布,电液伺服系统的控制参数需要进行匹配调试,提出了一种基于粒子群算法的电液伺服系统控制参数离线自寻优方法,目标特性由控制系统任务书和人工调试结果确定,参数寻优范围根据伺服系统稳定性分析结... 详细信息

由于伺服阀小信号流量特性存在一定散布,电液伺服系统的控制参数需要进行匹配调试,提出了一种基于粒子群算法的电液伺服系统控制参数离线自寻优方法,目标特性由控制系统任务书和人工调试结果确定,参数寻优范围根据伺服系统稳定性分析结果和批产工艺数据包络确定,寻优计算时间约为100~240 s。与人工调试相比,可以大幅提高电液伺服系统控制参数的批产调试效率。

关键词：自寻优方法电液伺服系统控制参数整定粒子群算法

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The latest process and challenges of microwave dielectric ceramics based on pseudo phase diagrams

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Journal of Advanced Ceramics 2021年第5期10卷 885-932页

作者： hongcheng yang Shuren ZHANG Hongyu yang Qingyu WEN Qiu yang Ling GUI Qian ZHAO Enzhu LI National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu 610054China

The explosive process of 5G communication evokes the urgent demand of miniaturized and integrated dielectric ceramics filter It is a pressing need to advance the development of dielectric ceramics utilization of emerging technology to design new materials and understand the polarization *** review provides the summary of the study of microwave dielectric ceramics(MWDCs)sintered higher than 1000℃ from 2010 up to now,with the purpose of taking a broad and historical view of these ceramics and illustrating research *** date,researchers endeavor to explain the structure-property relationship of ceramics with multitude of approaches and design a new formula or strategy to obtain excellent microwave dielectric *** are variety of factors that impact the permittivity,dielectric loss,and temperature stability of dielectric materials,covering intrinsic and extrinsic *** of these factors are often intertwined,which can complicate new dielectric material discovery and the mechanism *** of the various ceramics systems,pseudo phase diagram was used to classify the dielectric materials based on the *** this review,the ceramics were firstly divided into ternary systems,and then brief description of the experimental probes and complementary theoretical methods that have been used to discern the intrinsic polarization mechanisms and the origin of intrinsic loss was ***,some perspectives on the future outlook for high-temperature MWDCs were offered based on the synthesis method,characterization techniques,and significant theory developments.

关键词： high-temperature microwave dielectric ceramics(MWDCs) pseudo phase diagram developments and challenges composition-structure-property relationship

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基于U2NET的边缘检测研究

河北建筑工程学院学报 2024年第2期42卷 229-235页

作者：杨洪成岳杰赵明瞻张大伟河北建筑工程学院河北张家口075000

边缘检测在计算机视觉领域中扮演着重要角色,其可用于目标检测、图像分割等任务。U2NET是一种基于U-Net的深度学习模型,通过分层次的特征提取和上下文感知的特征融合来实现高精度的图像分割。针对U2NET在边缘检测中的应用进行研究,发现... 详细信息

边缘检测在计算机视觉领域中扮演着重要角色,其可用于目标检测、图像分割等任务。U2NET是一种基于U-Net的深度学习模型,通过分层次的特征提取和上下文感知的特征融合来实现高精度的图像分割。针对U2NET在边缘检测中的应用进行研究,发现传统卷积核对在卷积过程中对梯度信息不敏感的问题,传统的卷积块进行卷积时,内核优化是随机初始化的,对梯度信息没有显示编码,这导致了它很难专注于边缘相关的特征,而差分卷积是将卷积核覆盖的局部特征patch内的原始像素替换为像素差,将有用的像素关系进行编码,将其保留在训练过程中的卷积核内,这样就能克服传统CNN对捕获梯度信息不敏感的问题。并且在自制数据集和BSDS500公共数据集进行实验验证,证明了差分卷积U2NET在边缘检测任务上的优越性能。研究结果表明,基于差分卷积的U2NET是一种可以实现抠图和边缘检测的高效模型,可应用于各种实际场景中。

关键词： U2NET 边缘检测深度学习差分卷积

Low-firing,temperature stable and improved microwave dielectric properties of ZnO-TiO_(2)-Nb_(2)O_(5) composite ceramics

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Journal of Materiomics 2019年第3期5卷 471-479页

作者： Hongyu yang Shuren Zhang Yawei Chen hongcheng yang Zixuan Fang Ying Yuan Enzhu Li National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu610054China Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education University of Electronic Science and Technology of ChinaChengdu610054China

This article presents low-firing,low-loss and temperature stable ZnO-TiO_(2)-Nb_(2)O_(5) microwave dielectric composite ceramics with the assistance of lithium borosilicate(LBS)and zinc borosilicate(ZBS)glass *** is a liquid phase(eutectic mixture)generated by LBS(ZBS)glass,and solid particles could be wetted and ***,the migrations and rearrangements of particles could be ***,compared with ceramics undoped with glass frits,lower activation energies(E_(a))of ceramics doped with LBS and ZBS glass suggest that the low-temperature sintering behavior is easier to carry *** results indicated that LBS and ZBS glass both are effective sintering aids to accelerate the sintering process and improve the microwave dielectric properties of composite ceramics by controlling the phase compositions under low *** great properties of ZnO-TiO_(2)-Nb_(2)O_(5) ceramics were obtained when sintered at 900℃ for 4 h:ε_(r)=36.7,Q×f=20,000 GHz,τ_(f)=7 ppm/℃.

关键词： ZnO-TiO_(2)-Nb_(2)O_(5) Composite ceramics Dielectric

Influence of Re-ions with different ionic radius in Ba_(12)ReNb_(9)O_(36) on crystal structure and microwave dielectric properties

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Journal of Materiomics 2022年第1期8卷 104-112页

作者： Pengcheng Zhang Hao Li Xiaoqing Chen Xing Zhang hongcheng yang Canbing Li Shuren Zhang College of Electrical and Information Engineering Hunan UniversityChangsha410082China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu610054China National Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of ChinaChengdu610054China

The Ba_(12)ReNb_(9)O_(36)(Re=Yb,Ce,Tm,Er,Y,Ho,Dy,Gd)ceramics are synthesized by solid-phase reaction *** phase composition,crystal structure,microstructure,and microwave dielectric properties of the ceramics are investigated by X-ray diffraction,X-ray photoelectron spectroscopy,Scanning electron microscopy and Raman *** optimal microwave dielectric properties(ε_(r)=37.23,Q×f=36600 GHz,andτ_(f)=34 ppm/℃)are obtained for Ba_(12)YbNb_(9)O_(36) ceramic sintered at 1420℃for 6 *** this system,the variation of dielectric constant is dominated by *** Q×f is mainly affected by internal strain/fluctuation of *** variation of τ_(f) is related to the temperature coefficient of dielectric constant and the oxygen octahedron ***,the reduction of Ce^(4+) ions,the relative density,linear thermal expansion coefficient,and the second phase are also important factors affecting microwave dielectric properties.

关键词： Microwave dielectric ceramic Ba_(12)ReNb_(9)O_(36) Polarizability Raman spectrum

Cell-cell contact-induced gene editing/activation in mammalian cells using a synNotch-CRISPR/Cas9 system

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Protein & Cell 2020年第4期11卷 299-303页

作者： Hongxin Huang Xin Zhang Jie Lv hongcheng yang Xinlong Wang Shufeng Ma Ruoyang Shao Xin Peng Ying Lin Zhili Rong School of Basic Medical Sciences Cancer Research InstituteSouthern Medical UniversityGuangzhou 510515China Dermatology Hospital Southern Medical UniversityGuangzhou 510091China Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005China

Dear Editor,The CRISPR system has been widely used for genome manipulation in various cells,tissues and whole *** an increasing variety of inducible CRISPR systems have been exploited for a variety of applications,such as chemical switch(Zetsche et al.,2015),photo switch(Shao et al.,2018)and solution ligand switch(Baeumler et al.,2017;Kipniss et al.,2017;Schwarz et al.,2017)systems,a cell-cell interaction inducible system is *** synthetic Notch(synNotch)receptor is a recently developed cell-cell contact sensing platform,which contains a customized extracellular sensor module,a transmembrane core domain of native Notch,and a customized intracellular responder module(Morsut et al.,2016).

关键词： CRISPR/Cas9 system custom