检索结果-内蒙古大学图书馆

SID International Symposium Digest of Technical Papers, 2023

作者： Yuan, Zheng-Nan Sun, Zhi-Bo Vashchenko, Valerii Vashchenko, Olena Huo, Yuechu Cheng Yipeng Ho, Jacob Chen, Rongsheng Yeung, Fion S. Y. Kwok, Hoi-Sing State Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay Road Kowloon Hong Kong

We demonstrate a kind of in-cell solution-processed broadband circular polarizer made of liquid crystal polymer and a photo-aligned polarizer on top, using the coating technique and chemical treatment. The transmittance and reflectance spectrum shows a high ambient contrast ratio (ACR) improvement for the light-emitting display system. © 2023, John Wiley and Sons Inc. All rights reserved.

关键词： Liquid crystal polymers

来源：评论

学校读者我要写书评

暂无评论

Robust Control of Feeding Speed for Coal Mine Tunnel Drilling Machines 25

Robust Control of Feeding Speed for Coal Mine Tunnel Drillin...

引用

25th IEEE International Conference on Industrial technology, ICIT 2024

作者： Liu, Xiao Chen, Luefeng Wu, Min Cao, Weihua Lu, Chengda Pedrycz, Witold School of Automation China University of Geosciences Wuhan China School of Automation The Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems The Engineering Research Center of Intelligent Technology for Geo-Exploration Wuhan430074 China University of Alberta Department of Electrical and Computer Engineering EdmontonABT6G 2R3 Canada Systems Research Institute Polish Academy of Sciences Warsaw00-901 Poland Istinye University Department of Computer Engineering Sariyer Istanbul34396 Turkey

Changes in coal seam hardness cause fluctuations in the feed resistance at the drill bit during the drilling process, leading to unstable feeding speed. This paper proposes a robust dynamic output feedback controller to suppress disturbances caused by the variations in coal seam hardness in the feed system. Firstly, an unknown parameter measuring coal seam hardness is introduced, and an uncertain model of the feeding system is established based on the finite element model of the drill string. By designing weighted functions based on industrial field requirements and constructing a generalized plant, the controller achieves loop shaping, reducing the low-frequency impact of coal seam hardness variations on the feed system and suppressing the systems resonance peak. Simulation results demonstrate that the controller effectively suppresses parameter variations and external disturbances caused by changes in coal seam hardness, achieving stable control of the drilling speed. © 2024 IEEE.

关键词： Robust control

来源：评论

学校读者我要写书评

暂无评论

Human-Robot Pose Tracking Based on CNN with Color and Geometry Aggregation 16th

Human-Robot Pose Tracking Based on CNN with Color and Geo...

引用

16th International Conference on Social Robotics, ICSR + InnoBiz 2024

作者： Xu, Yue Zhang, Yinlong Liu, Shuai Liu, Yuanhao Liang, Wei He, Hongsheng Shenyang University of Technology Shenyang110020 China Guangzhou Institute of Industrial Intelligence Guangzhou511458 China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang110016 China University of Chinese Academy of Sciences Beijing100049 China Department of Computer Science The University of Alabama TuscaloosaAL35487 United States

ISBN: (纸本)9789819611508

Accurately tracking the robotic arm and human joints is crucial to ensure safety during human-robot interaction. However, traditional pose tracking methods often exhibit insufficient performance and robustness in complex environments. The variations in the robotic arm’s environment and posture make it challenging for traditional methods to accurately capture the positions and posture of its joints. Specifically, when addressing challenges such as high similarity, occlusion, background complexity, and joint recognition failures, they often struggle to provide reliable and accurate results. To address these challenges, this paper proposes a human-robot pose tracking algorithm based on a new convolutional neural network model. To enhance detection accuracy, an improved color detection module is introduced to resolve joint misclassification. A geometric perception module is designed to accurately locate joints even under occlusion. Additionally, innovative iEMA and DBB modules are incorporated. The iEMA module employs edge detection technology to dynamically adjust thresholds for correct matching by improving the edge matching process. The DBB module refines the boundary box parameters for precise localization by introducing adaptive bounding box updates in real-time. This algorithm also integrates human pose recognition, enabling real-time pose recognition, thereby facilitating more intelligent and natural human-robot interaction. The algorithm has been rigorously evaluated on a custom-designed robotic arm platform. Experimental results validate the algorithm’s effectiveness and feasibility. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Robotic arms

来源：评论

学校读者我要写书评

暂无评论

A Generalized Binary Tree Mechanism for Differentially Private Approximation of All-Pair Distances

arXiv

引用

arXiv 2025年

作者： Dinitz, Michael Fan, Chenglin Liu, Jingcheng Upadhyay, Jalaj Zou, Zongrui Department of Computer Science Johns Hopkins University United States Department of Computer Science and Engineering Seoul National University Korea Republic of State Key Laboratory for Novel Software Technology New Cornerstone Science Laboratory Nanjing University China Management Science & Information Systems Department Rutgers University United States

We study the problem of approximating all-pair distances in a weighted undirected graph with differential privacy, introduced by Sealfon [Sea16]. Given a publicly known undirected graph, we treat the weights of edges as sensitive information, and two graphs are neighbors if their edge weights differ in one edge by at most one. We obtain efficient algorithms with significantly improved bounds on a broad class of graphs which we refer to as recursively separable. In particular, for any n-vertex Kh-minor-free graph, our algorithm achieve an additive error of Õ(h(nW)1/3), where W represents the maximum edge weight;For grid graphs, the same algorithmic scheme achieve additive error of Õ(n1/4√W). Our approach can be seen as a generalization of the celebrated binary tree mechanism for range queries, as releasing range queries is equivalent to computing all-pair distances on a path graph. In essence, our approach is based on generalizing the binary tree mechanism to graphs that are recursively separable. Copyright © 2025, The Authors. All rights reserved.

关键词： Binary trees

来源：评论

学校读者我要写书评

暂无评论

FM-FCN:A Neural Network with Filtering Modules for Accurate Vital Signs Extraction

引用

Research 2025年第1期2024卷 92-106页

作者： Fangfang Zhu Qichao Niu Xiang Li Qi Zhao Honghong Su Jianwei Shuai Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials ResearchXiamen UniversityXiamen 361005China National Institute for Data Science in Health and Medicine and State Key Laboratory of Cellular Stress BiologyInnovation Center for Cell Signaling NetworkXiamen UniversityXiamen 361005China Vitalsilicon Technology Co.Ltd. JiaxingZhejiang 314006China School of Computer Science and Software Engineering University of Science and Technology LiaoningAnshan 114051China Yangtze Delta Region Institute of Tsinghua University ZhejiangJiaxing 314006China Wenzhou Institute University of Chinese Academy of SciencesWenzhou 325001China Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine Vision and Brain Health)Wenzhou 325001China

Neural networks excel at capturing local spatial patterns through convolutional modules,but they may struggle to identify and effectively utilize the morphological and amplitude periodic nature of physiological *** this work,we propose a novel network named filtering module fully convolutional network(FM-FCN),which fuses traditional filtering techniques with neural networks to amplify physiological signals and suppress ***,instead of using a fully connected layer,we use an FCN to preserve the time-dimensional correlation information of physiological signals,enabling multiple cycles of signals in the network and providing a basis for signal ***,we introduce the FM as a network module that adapts to eliminate unwanted interference,leveraging the structure of the *** approach builds a bridge between deep learning and signal processing ***,we evaluate the performance of FM-FCN using remote *** results demonstrate that FM-FCN outperforms the second-ranked method in terms of both blood volume pulse(BVP)signal and heart rate(HR)*** substantially improves the quality of BVP waveform reconstruction,with a decrease of 20.23%in mean absolute error(MAE)and an increase of 79.95%in signal-to-noise ratio(SNR).Regarding HR estimation accuracy,FM-FCN achieves a decrease of 35.85%in MAE,29.65%in error standard deviation,and 32.88%decrease in 95%limits of agreement width,meeting clinical standards for HR accuracy *** results highlight its potential in improving the accuracy and reliability of vital sign measurement through high-quality BVP signal *** codes and datasets are available online at https://***/zhaoqi106/FM-FCN.

关键词： physiological signalsin filtering module fully convolutional network fm fcn which vital signs extraction amplify physiological signals convolutional modulesbut neural networks filtering module capturing local spatial patterns

来源：评论

学校读者我要写书评

暂无评论

Quantum Rod Color Filters with High Ambient Contrast Ratio

Quantum Rod Color Filters with High Ambient Contrast Ratio

引用

SID International Symposium Digest of Technical Papers, 2023

作者： Gao, Yiyang Prodanov, Maksym F. Kang, Chengbin Liao, Zebing Kumar, Mallem Song, Jianxin Vashchenko, Valerii V. Srivastava, Abhishek K. State Key Laboratory of Advanced Displays and Optoelectronics Technologies Centre for Display Research Electronics and Computer Engineering Department China IAS Center for Quantum Technologies The Hong Kong University of Science and Technology Hong Kong

Applying quantum dot (QDs)-based photoluminescent color filter arrays to mono-color OLED displays and liquid crystal displays is considered a promising method to broaden the color gamut and boost the brightness and efficiency of the display. However, the ambient light could excite the semiconductor QDs and QRs, decreasing the display ambient contrast ratio. Adding a traditional absorptive CF array has limited functions in solving this problem due to the broadband transmission band of pigments. With a larger Stokes shift, QRs are more suitable for suppressing photoluminescent reflection. In this article, we simulate the ambient contrast ratio of a QD/QR-OLED display, considering the parameters of backlight, the Stokes shift, the absorption strength, and spectral properties of QRs, QDs, and absorptive CFs, our discussion provides insight for optimization of the display ambient contrast ratio. © 2023, John Wiley and Sons Inc. All rights reserved.

关键词： Semiconductor quantum dots

来源：评论

学校读者我要写书评

暂无评论

Research on Reward Distribution Mechanism Based on Temporal Attention in Episodic Multi-Agent Reinforcement Learning 6

Research on Reward Distribution Mechanism Based on Temporal ...

引用

6th Asian Conference on Artificial Intelligence technology, ACAIT 2022

作者： Fang, Baofu Cao, Mingkuan Wang, Zaijun Wang, Hao Hefei University of Technology Intelligent Interconnected Systems Laboratory of Anhui Province School of Computer Science and Information Engineering Hefei China Civil Aviation Flight University of China Key Laboratory of Flight Techniques and Flight Safety Guanghan China

ISBN: (纸本)9781665453110

In episodic multi-agent reinforcement learning, we study how to distribute episodic rewards at the end of an episode by trajectory time steps to obtain high-quality and interpretable learning reward signals to guide agent training. This paper proposes a reward distribution method based on temporal attention. This method is used to characterize the influence of actions on state transitions along the trajectory, and the effect of each influence on the global reward at each time step. This method is combined with a deep deterministic strategy, and a multi-agent algorithm based on the temporal attention reward distribution mechanism is proposed to speed up the convergence speed of the agent. The effectiveness of the algorithm is verified in a multi-agent pursuit environment. Compared with other reward distribution methods, the method in this paper converges faster and obtains higher rewards. © 2022 IEEE.

关键词： Reinforcement learning

来源：评论

学校读者我要写书评

暂无评论

Secure Communication in Dynamic RDARS-Driven systems

arXiv

引用

arXiv 2025年

作者： Pei, Ziqian Wang, Jintao Zhang, Pingping Shi, Zheng Yang, Guanghua Ma, Shaodan State Key Laboratory of Internet of Things for Smart City The Department of Electrical and Computer Engineering University of Macau Macau999078 China School of Intelligent Systems Science and Engineering Jinan University Zhuhai519070 China

In this letter, we investigate a dynamic reconfigurable distributed antenna and reflection surface (RDARS)driven secure communication system, where the working mode of the RDARS can be flexibly configured. We aim to maximize the secrecy rate by jointly designing the active beamforming vectors, reflection coefficients, and the channel-aware mode selection matrix. To address the non-convex binary and cardinality constraints introduced by dynamic mode selection, we propose an efficient alternating optimization (AO) framework that employs penalty-based fractional programming (FP) and successive convex approximation (SCA) transformations. Simulation results demonstrate the potential of RDARS in enhancing the secrecy rate and show its superiority compared to existing reflection surface-based schemes. Copyright © 2025, The Authors. All rights reserved.

关键词： Secure communication

来源：评论

学校读者我要写书评

暂无评论

Photo-induced Rotation Alignment for Ultra-thin Circular Polarizer and Its Applications

Photo-induced Rotation Alignment for Ultra-thin Circular Pol...

引用

The 2023 International Conference on Display technology, (ICDT 2023)

作者： Yuan, Zheng-Nan Sun, Zhi-Bo Vashchenko, Valerii Cheng, Yue-Chu Huo, Yi-Peng Ho, Jacob Chen, Rong-Sheng Yeung, Fion S. Y. Kwok, Hoi-Sing State Key Laboratory of Advanced Displays and Optoelectronics Technologies and Center for Display Research Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay Road Kowloon Hong Kong

An in-cell broadband circular polarizer using liquid crystal polymer (LCP) is proposed in this paper. Specifically, a polarizer with photoalignment technology is combined on the top of it. An enhancement of the ambient contrast ratio (ACR) is achieved, which shows potential in the application of light-emitting display (LED). © 2023, John Wiley and Sons Inc. All rights reserved.

关键词： Light emission

来源：评论

学校读者我要写书评

暂无评论

FontGuard: A Robust Font Watermarking Approach Leveraging Deep Font Knowledge

arXiv

引用

arXiv 2025年

作者： Wong, Kahim Zhou, Jicheng Li, Kemou Si, Yain-Whar Wu, Xiaowei Zhou, Jiantao State Key Laboratory of Internet of Things for Smart City China Department of Computer and Information Science Faculty of Science and Technology University of Macau China

The proliferation of AI-generated content brings significant concerns on the forensic and security issues such as source tracing, copyright protection, etc, highlighting the need for effective watermarking technologies. Font-based text watermarking has emerged as an effective solution to embed information, which could ensure copyright, traceability, and compliance of the generated text content. Existing font watermarking methods usually neglect essential font knowledge, which leads to watermarked fonts of low quality and limited embedding capacity. These methods are also vulnerable to real-world distortions, low-resolution fonts, and inaccurate character segmentation. In this paper, we introduce FontGuard, a novel font watermarking model that harnesses the capabilities of font models and language-guided contrastive learning. Unlike previous methods that focus solely on the pixel-level alteration, FontGuard modifies fonts by altering hidden style features, resulting in better font quality upon watermark embedding. We also leverage the font manifold to increase the embedding capacity of our proposed method by generating substantial font variants closely resembling the original font. Furthermore, in the decoder, we employ an image-text contrastive learning to reconstruct the embedded bits, which can achieve desirable robustness against various real-world transmission distortions. FontGuard outperforms state-of-the-art methods by +5.4%, +7.4%, and +5.8% in decoding accuracy under synthetic, cross-media, and online social network distortions, respectively, while improving the visual quality by 52.7% in terms of LPIPS. Moreover, FontGuard uniquely allows the generation of watermarked fonts for unseen fonts without re-training the network. The code and dataset are available at https://***/KAHIMWONG/FontGuard. Copyright © 2025, The Authors. All rights reserved.

关键词： Contrastive Learning

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：