检索结果-内蒙古大学图书馆

Energy storage performance and phase transition under high electric field in Na/Ta co-doped AgNbO_(3)ceramics

Journal of Materiomics 2023年第1期9卷 19-26页

作者： Mingyuan Zhao Jing Wang Hao Yuan Zehan Zheng Lei Zhao Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province College Physics Science and TechnologyHebei UniversityBaoding071002China State Key Laboratory of Mechanics and Control of Mechanical Structures College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing210016China

Lead-free antiferroelectric ceramics with high energy storage performance show great potential in pulsed power ***,poor breakdown strength and antiferroelectric stability are the two main drawbacks that limit the energy storage performance of antiferroelectric ***,highquality(Ag_(1-x)Na_(x))(Nb_(1-x)Ta_(x))O_(3)ceramics were prepared by the tape casting *** breakdown strength was greatly improved as a result of the high density and fine grains,while the antiferroelectric stability was enhanced owning to the M2 *** from the synergistic improvement in breakdown strength and antiferroelectric stability,(Ag_(0.80)Na_(0.20))(Nb_(0.80)Ta_(0.20))O_(3)ceramic reveals a benign energy storage performance of W_(rec)=5.8 J/cm^(3)and h=61.7%with good temperature stability,frequency stability and cycling *** is also found that the high applied electric field can promote the M2-M3 phase transition,which may provide ideas to improve the thermal stability of the energy storage performance in AgNbO_(3)-based ceramics.

关键词： Antiferroelectric ceramics AgNbO_(3)-based ceramics Phase transition Tape casting process

来源：评论

学校读者我要写书评

暂无评论

Multi-Feature Fusion Transformer for Natural Language Inference 5

Multi-Feature Fusion Transformer for Natural Language Infere...

引用

5th International Conference on Robotics, Intelligent control and Artificial Intelligence, RICAI 2023

作者： Sun, Lei Li, Xiangyang Yan, Hengxin School of Electrical Engineering and Automation Tianjin University of Technology Tianj in Key Laboratory for Control Theory and Complicated Industry Systems Tianjin China School of Electrical Engineering and Automation Tianjin University of Technology Tianjin China

ISBN: (纸本)9798350357950

Natural Language Inference (NLI) is a branch of Natural Language Processing (NLP) whose main task is to determine the relationship between two sentences. Such tasks essentially use pre-trained models to ensure accuracy, and many applications are found in human-computer dialog and question-answering systems. However, in some cases where small devices are deployed offline, lightweight model implementations are often required to save computational resources. To address this problem and ensure more efficient inference capabilities, this paper describes how to improve the preexisting Transformer and proposes a Multi-Feature Fusion Transformer Network for NLI processing. The model integrates sequence features and introduces a priori information to enhance local features. It also achieves a comprehensive fusion of sequence information, local features, and non-local features, thus compensating for many potential shortcomings of Transformer. At the same time, it maintains the lightweight feature of the model and facilitates the implementation of downstream tasks. We verified the above point by experiments, our model has better inference performance compared to previous models used for the same task. The accuracy in the SNLI dataset reached 89.0%, while the matched and mismatched versions of MultiNLI reached 79.3% and 78.7%. © 2023 IEEE.

关键词： Feature Fusion Natural language inference Natural language processing Transformer

来源：评论

学校读者我要写书评

暂无评论

RepColor: deep coloring algorithm combining semantic categories

引用

Optoelectronics Letters 2025年

作者： Lei Sun Dongjie Ju School of Electrical Engineering and Automation， Tianjin University of Technology Tianjin Key Laboratory for Control Theory and Complicated Industry Systems， Tianjin University of Technology

Image coloring is an inherently uncertain and multimodal problem. By inputting a grayscale image into a coloring network， visually plausible colored photos can be generated. Conventional methods primarily rely on semantic information for image colorization. Although effective in coloring images with clear semantic information， these methods still suffer from color contamination and semantic confusion. This is largely due to the limited capacity of convolutional neural networks to effectively learn deep semantic information inherent in *** this paper， we propose a network structure that addresses these limitations by leveraging multi-level semantic information classification and fusion. Additionally， we introduce a global semantic fusion network to combat the issues of color contamination. The proposed coloring encoder accurately extracts object-level semantic information from *** further enhance visual plausibility， we employ a self-supervised adversarial training method. We train the network structure on various datasets with varying amounts of data and evaluate its performance using the ImageNet validation set and COCO validation set. Experimental results demonstrate that our proposed RepColor can generate more realistic images compared to previous approaches， showcasing its high generalization ability.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Liquid refractive index measurement method based on orthogonal polarization laser self-mixing interference

引用

Optoelectronics Letters 2025年

作者： ZHAO Yan WANG Haipeng DU Shengzhi TONG Jigang KANG Jun School of Electrical Engineering and Automation， Tianjin University of Technology Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Department of Electrical Engineering， Tshwane University of Technology

In this paper， a novel method combining orthogonal polarization laser self-mixing interference is proposed. The method utilizes a rotating cuvette to measure the refractive index of liquids at different concentrations. The cuvette is filled with the liquid to be measured and rotated by a certain angle. The change in the number of interference fringes， caused by comparing an empty cuvette with a liquid-filled cuvette， is used to calculate the refractive index of the liquid. A four-fold logic subdivision algorithm is then used to improve measurement resolution. The experimental results show that for pure water and different NaCl and glucose solutions concentrations， the average relative errors are 0.47%， 0.59%， and 2.17%， respectively， with the maximum relative error within ±2.54%. The standard deviation of all solutions is less than 3.4%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Efficient Real-Time control of Matrix Headlights

Efficient Real-Time Control of Matrix Headlights

引用

International Conference on Applied System Innovation (ICASI)

作者： Mirko Waldner Nathalie Müller Torsten Bertram Institute of Control Theory and Systems Engineering (RST) TU Dortmund University Dortmund NRW Germany

ISBN: (数字)9798350394924

ISBN: (纸本)9798350394931

This contribution generalizes our real-time Super Sampling control (SSC) method for pixel light intensities of automotive matrix headlights to a general MapReduce method. The redesigned control method is now a generalization with extended capabilities of well-known control methods, which can be used to find an efficient control stagey for a specific matrix headlight and target illumination. The process of finding the objectively best control parameters is shown on real matrix headlights with 84 and 16,384 pixels. For a homogeneous target illumination, the SSC method achieves for the 84 pixels headlamp an up to 8.84 % lower Root Mean Squared Error (RMSE) of the intensity distribution than a rectangular lighting approximation without the novel intensity mapping and a 95.85 % lower RMSE for the 16,384 pixels headlamp.

关键词： Technological innovation Lighting Process control Real-time systems Automotive engineering

来源：评论

学校读者我要写书评

暂无评论

Material-Based Illumination Optimization for Computer Vision in Automated Driving

Material-Based Illumination Optimization for Computer Vision...

引用

International Conference on Applied System Innovation (ICASI)

作者： Nathalie Müller Mirko Waldner Torsten Bertram Institute of Control Theory and Systems Engineering (RST) TU Dortmund University Dortmund NRW Germany

ISBN: (数字)9798350394924

ISBN: (纸本)9798350394931

The contribution at hand presents and evaluates a novel matrix headlamp lighting distribution optimized for computer vision and energy consumption, thus enhancing automated vehicles' safety through an improved perception. The light distribution considers the materials of the environment to illuminate each material selectively with a different intensity. The simulative results show that today's real light distributions are inefficient for automated driving and that the proposed material-based illumination can enhance the detection quality by over 80% while saving energy simultaneously, outperforming real and homogenous light distributions.

关键词： Computer vision Technological innovation Energy consumption Roads Lighting Safety Optimization

来源：评论

学校读者我要写书评

暂无评论

Multi-view stereo network with regional consistency and discrepancy cost volume

引用

Optoelectronics Letters 2025年

作者： XIA GUANGZHI ZHANG JINGLEI JIA XIN Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems， School of Electrical Engineering and Automation， Tianjin University of Technology Engineering Training Center， Tianjin University of Technology

The goal of Multi-View Stereo (MVS) is to robustly recover an accurate 3D point cloud from multiple views. In this paper， we propose a novel Multi-View Stereo network with Regional consistency and Discrepancy cost volume， denoted as MVSRD. Firstly， a full-feature interaction transformer is presented， which learns the regional consistency between the reference and source views， improving the robustness of reconstruction. Secondly， a discrepancy cost volume is designed to emphasize pixel-level differences between feature volumes. It facilitates the construction of high-quality cost volume to enhance the accuracy of reconstruction. Extensive experiments on the DTU and Tanks & Temples datasets demonstrate that our MVSRD achieves state-of-the-art performance.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Consensus of Uncertain Euler-Lagrange Multi-agent Systems under Switching Digraphs and Disturbances 8

Consensus of Uncertain Euler-Lagrange Multi-agent Systems un...

引用

8th International Conference on Automation, control and Robotics engineering, CACRE 2023

作者： Ju, Lei Wang, Zhiwei Wang, Anqing Zhou, Xiaotong Dalian Maritime University College of Marine Electrical Engineering Dalian China Harbin Engineering University College of Intelligent Systems Science and Engineering Harbin China Harbin Institute of Technology Center for Control Theory and Guidance Technology Harbin China

ISBN: (纸本)9798350302776

This paper focuses on exploring the problem of achieving leader-follower consensus in uncertain Euler-Lagrange multi-agent systems, which are subjected to disturbance, and operate on switched digraph. To be more precise, the system dynamics are characterized by uncertainties that can be linearly parameterized, and the disturbances that are considered are those originating from the leader system. A novel adaptive distributed control strategy is proposed to overcome the difficulties of suppressing disturbances and achieving consistency under the condition of joint connectivity of switched digraphs. By using Lyapunov stability theory and the generalized Barbalat's lemma, it is proved that the uncertain Euler-Lagrange multi-agent systems achieves state consensus asymptotically with the proposed distributed adaptive control protocol. The efficacy of the adaptive distributed control strategy proposed in the paper is validated by presenting a case study involving a system composed of four double-link manipulators. © 2023 IEEE.

关键词： Multi agent systems

来源：评论

学校读者我要写书评

暂无评论

Exploiting Equivariance in the Design of Tracking controllers for Euler-Poincare Systems on Matrix Lie Groups ⁎

引用

IFAC-PapersOnLine 2024年第6期58卷 333-338页

作者： Matthew Hampsey Pieter van Goor Ravi Banavar Robert Mahony Systems Theory and Robotics Group School of Engineering Australian National University Australia Interdisciplinary Programme in Systems and Control Engineering Indian Institute of Technology Bombay India

The trajectory tracking problem is a fundamental control task in the study of mechanical systems. Hamiltonian systems are posed on the cotangent bundle of configuration space of a mechanical system, however, symmetries for the full cotangent bundle are not commonly used in geometric control theory. In this paper, we propose a group structure on the cotangent bundle of a Lie group and leverage this to define momentum and configuration errors for trajectory tracking, drawing on recent work on equivariant observer design. We show that this error definition leads to error dynamics that are themselves “Euler-Poincare like” and use these to derive simple, almost global trajectory tracking control for fully-actuated Euler-Poincare systems on a Lie group state space.

关键词： Non-Linear control Systems control Design Tracking Mechatronic Systems

来源：评论

学校读者我要写书评

暂无评论

Synergistically enhancing nitrate reduction into N_(2)in water by N-doped Pd-Cu biochar bimetallic single-atom electrocatalysis

引用

Biochar 2024年第1期6卷 114-131页

作者： Lihao Zhang Yuqing Wu Zongqiang Zhu Yinian Zhu Yi Dong Meina Liang Huan Deng College of Environmental Science and Engineering Guilin University of TechnologyGuilin 541006People’s Republic of China. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology Guilin 541006People’s Republic of China. Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of TechnologyGuilin 541006People’s Republic of China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100035People’s Republic of China.

Noble metal materials have been identified as high efficiency catalysts for electrocatalytic reduction of nitrate,and the synthesis and manufacture of high catalytic activity and environmentally friendly catalysts of activating hydrogen for water purification applications is extremely *** this work,the Pd-Cu single-atom catalysts(Pd-Cu-N-BC)were first prepared by direct growth of Pd-Cu single-atom on bamboo biochar by regulating the concentration of precursors and doping method,and then enhanced electrocatalytic reduction nitrate performance and N2 *** results showed that Pd-Cu-N-BC displayed excellent catalytic activity and reusability in electrocatalytic reduction nitrate with a low potential of 0.47 V ***(@10 mA cm−2).The maximum nitrate removal efficiency and N2 generation could reach about 100%and 72.32%within 180 min,*** density functional theory(DFT)calculations confirmed that Cu atoms could catalyze the electrochemical reduction of nitrate to nitrite,and Pd atoms anchored in the nitrogen-doped biochar(N-BC)lattice could catalyze electrochemical reduction of nitrite to N2 involving the formation of hydrogen radical(H*).The characterization results of XANES showed that electronic synergistic effect between Pd and Cu single atoms significantly promotes the N2 production through hydrogenation while inhibiting the generation of byproducts,leading to significantly enhanced electrocatalytic reduction of nitrate to ***,Pd-Cu-N-BC was designed as a 3D particle electrode for enhanced electrocatalytic reduction of nitrate,exhibiting excellent stability and reusability,which could be considered as a suitable candidate for applications in the remediation of nitrate contamination.

关键词： Bamboo biochar Single atom catalyst Electrocatalytic denitration Hydrogen evolution reaction Density functional theory

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：