检索结果-内蒙古大学图书馆

Bi-Directional and Triangular Circulation Fusion Neural Networks for Small Object Detection

IEEE Transactions on Circuits and systems for Video Technology 2024年第6期35卷 5140-5152页

作者： Li, Fangyu Duan, Junzhu Zhang, Qiyu Shan, Caifeng Han, Honggui the School of Information Science and Technology Beijing Key Laboratory of Computational Intelligence and Intelligent System Engineering Research Center of Digital Community Ministry of Education Beijing Artificial Intelligence Institute Beijing University of Technology Beijing100124 China the State Key Laboratory for Novel Software Technology Nanjing University Nanjing210023 China the School of Intelligence Science and Technology Nanjing University Suzhou215163 China

Deep learning-driven object detection models are capable of accurately identifying and localizing objects. However, small objects contain limited information relative to global features, resulting in the fact that detection models often do not learn small object features adequately. To enhance the precision in detecting small objects, we propose a bi-directional and triangular circulation fusion neural network (BTFN). First, to selectively strengthen the position features of small objects, we propose a feature circulation extraction module composed of a bi-directional triangular densely nested convolutional network (BTF), thus achieving repetitive multi-layer feature fusion. Second, to fill up the semantic gaps between different scales of features, we design a mixed dual attention module (MDA) in the bi-directional triangular densely nested network. Third, to mitigate the lost information in the neural networks with deep layers as well as improve the inference time, we design a re-parameterization bi-directional composite feature fusion module (Rep-BFM) that fuses the features of multiple scales. The proposed model is evaluated extensively on the MS COCO, Tsinghua-Tencent 100k, and Haier dismantled parts of used home appliances datasets. The experiment results show that the proposed model improves the AP on MS COCO by 4%, especially the APS of small objects is improved by 7.7% compared with SOTA models. © 2024 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.

关键词： Domestic appliances

来源：评论

学校读者我要写书评

暂无评论

Influence of the Initial Dynamic Vivacity Ratio’s Accuracy of Propellant Charge 2nd

Influence of the Initial Dynamic Vivacity Ratio’s Accuracy ...

引用

2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Li, Chao Rui, Xiaoting Lin, Zhicheng National Key Laboratory of Complex Multibody System Dynamics Nanjing China Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

The compression and fracture of the propellant charge under the corresponding charge structure is the fundamental cause of the chamber explosion. Determining the degree of fragmentation of the propellant charge is an important research content for evaluating the launch safety of propellant charge. The initial dynamic vivacity ratio of propellant charge as a key parameter to quantitatively characterize the fragmentation degree of the bottom propellant charge, which is the core of the launch safety evaluation of the propellant charge. Based on the theory of initial dynamic vivacity ratio, combined with the actual situation of the experiment and the simulation results, the factors affecting the accuracy of the initial dynamic vivacity ratio of the fitting interval and the experimental drug weighing error are analyzed in this paper. The results show that when the charge weighing error has little effect on the test results of the initial dynamic vivacity ratio. Meanwhile, when the cut-off interval is the part where the dynamic vivacity ratio is greater than 1, the initial dynamic vivacity ratio is closest to the real situation. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Propellants

来源：评论

学校读者我要写书评

暂无评论

Fast Calculation of Vibration Characteristics for Tracked Vehicle 2nd

Fast Calculation of Vibration Characteristics for Tracked Ve...

引用

2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Wang, Pingxin Zhang, Jianshu Rui, Xiaoting Wang, Guoping Wang, Xun Nanjing University of Science and Technology Nanjing China National Key Laboratory of Complex Multibody System Dynamics Nanjing China

ISBN: (纸本)9789819980475

Tracked vehicles are extensively used in both industry and agriculture, and the vibration they generate has a significant effect on occupant comfort. In order to reduce this vibration, it is essential to study the vibration characteristics of the system. Utilizing the Transfer Matrix Method for Multibody systems (MSTMM), a dynamic model of a tracked vehicle was established which was composed of the barrel, pitch body, revolved body, chassis, sprockets, idlers, support rollers, road wheels, road arms, track links and track pins. The track link was modelled as a spatial rigid body and the connections between tracks and wheels as well as the ground were modelled as elastic hinges. A calculation algorithm for vibration characteristics was then developed by solving the overall transfer equation. The proposed dynamic model and the selected parameters were verified through a modal test, thus providing a foundation for evaluating the dynamic performance of tracked vehicle systems. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Tracked vehicles

来源：评论

学校读者我要写书评

暂无评论

Brain-inspired Intelligent Robotics:Theoretical Analysis and systematic Application

引用

Machine intelligence Research 2023年第1期20卷 1-18页

作者： Hong Qiao Ya-Xiong Wu Shan-Lin Zhong Pei-Jie Yin Jia-Hao Chen The State Key Laboratory of Management and Control for Complex System Institute of AutomationChineseAcademyof SciencesBeijing100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China Chinese Academy of Science Center for Excellence in Brain Science and Intelligence Technology Shanghai 200031China School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China

Traditional joint-link robots have been widely used in production lines because of their high precision for single *** the development of the manufacturing and service industries,the requirement for the comprehensive performance of robotics is *** types of bio-inspired robotics have been investigated to realize human-like motion control and manipulation.A study route from inner mechanisms to external structures is proposed to imitate humans and animals *** this idea,a brain-inspired intelligent robotic system is constructed that contains visual cognition,decision-making,motion control,and musculoskeletal *** paper reviews cutting-edge research in brain-inspired visual cognition,decision-making,motion control,and musculoskeletal *** software systems and a corresponding hardware system are established,aiming at the verification and applications of next-generationbrain-inspired musculoskeletal robots.

关键词： Brain-inspired intelligent robot software and hardware decision making muscle control cognitive intelligence.

来源：评论

学校读者我要写书评

暂无评论

Two Stages Segmentation Algorithm of Breast Tumor in DCE-MRI Based on Multi-Scale Feature and Boundary Attention Mechanism

引用

Computers, Materials & Continua 2024年第7期80卷 1543-1561页

作者： Bing Li Liangyu Wang Xia Liu Hongbin Fan Bo Wang Shoudi Tong School of Automation Harbin University of Science and TechnologyHarbin150080China Heilongjiang Provincial Key Laboratory of Complex Intelligent System and Integration Harbin150080China School of Computer Engineering Technology Guangdong Institute of Science and TechnologyZhuhai519090China

Nuclearmagnetic resonance imaging of breasts often presents complex *** tumors exhibit varying sizes,uneven intensity,and indistinct *** characteristics can lead to challenges such as low accuracy and incorrect segmentation during tumor ***,we propose a two-stage breast tumor segmentation method leveraging multi-scale features and boundary attention ***,the breast region of interest is extracted to isolate the breast area from surrounding tissues and ***,we devise a fusion network incorporatingmulti-scale features and boundary attentionmechanisms for breast tumor *** incorporate multi-scale parallel dilated convolution modules into the network,enhancing its capability to segment tumors of various sizes through multi-scale convolution and novel fusion ***,attention and boundary detection modules are included to augment the network’s capacity to locate tumors by capturing nonlocal dependencies in both spatial and channel ***,a hybrid loss function with boundary weight is employed to address sample class imbalance issues and enhance the network’s boundary maintenance capability through additional *** was evaluated using breast data from 207 patients at RuijinHospital,resulting in a 6.64%increase in Dice similarity coefficient compared to the *** results demonstrate the superiority of the method over other segmentation techniques,with fewer model parameters.

关键词： Dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI) breast tumor segmentation multi-scale dilated convolution boundary attention the hybrid loss function with boundary weight

来源：评论

学校读者我要写书评

暂无评论

Digital CEOs in Digital Enterprises:Automating,Augmenting,and Parallel in Metaverse/CPSS/TAOs

引用

IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 820-823页

作者： Juanjuan Li Rui Qin Sangtian Guan Xiao Xue Peng Zhu Fei-Yue Wang with State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China the College of Intelligence and Computing Tianjin UniversityTianjin 300072China School of Economics and Management Nanjing University of Science and TechnologyNanjing 210094China the State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190 Faculty of Innovation Engineering Macao University of Science and TechnologyMacao 999078China

BIG models or foundation models are rapidly emerging as a key force in advancing intelligent societies[1]–[3]Their significance stems not only from their exceptional ability to process complex data and simulate advan... 详细信息

关键词： exceptional Auto advancing

来源：评论

学校读者我要写书评

暂无评论

Finite-time H∞ control and energy cost optimization for nonlinear delayed systems through switching analysis and interval matrix method

引用

science China(Information sciences) 2025年第3期68卷 397-398页

作者： Guici CHEN Huimin ZENG Song ZHU Shiping WEN Junhao HU Hubei Province Key Laboratory of System Science in Metallurgical Process Wuhan University of Science and Technology School of Mathematics China University of Mining and Technology Centre for Artificial Intelligence University of Technology Sydney School of Mathematics and Statistics South-Central Minzu University

Stability, as one of the most important research directions,has caught the attention of many scholars [1–3]. Simultaneously, in domains such as vessel control and vehicle systems,external disturbances are unavoidable. The research challenge thus emerges: “How can one attain the desired system performance in a finite time while controlling the impact of external disturbances on output variables?”. Finite-time H∞control（H∞FTC） is a salient solution to this problem.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Development and Control of Underwater Gliding Robots:A Review

引用

IEEE/CAA Journal of Automatica Sinica 2022年第9期9卷 1543-1560页

作者： Jian Wang Zhengxing Wu Huijie Dong Min Tan Junzhi Yu the State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190 the School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100049China the State Key Laboratory for Turbulence and Complex System Department of Mechanics and Engineering ScienceBIC-ESATCollege of EngineeringPeking UniversityBeijing 100871China

As one of the most effective vehicles for ocean development and exploration,underwater gliding robots(UGRs)have the unique characteristics of low energy consumption and strong ***,by borrowing the motion principles of current underwater robots,a variety of novel UGRs have emerged with improving their maneuverability,concealment,and environmental friendliness,which significantly broadens the ocean *** this paper,we provide a comprehensive review of underwater gliding robots,including prototype design and their key *** the perspective of motion characteristics,we categorize the underwater gliding robots in terms of traditional underwater gliders(UGs),hybrid-driven UGs,bio-inspired UGs,thermal UGs,and ***,their buoyancy driven system,dynamic and energy model,and motion control are concluded with detailed ***,we have discussed the current critical issues and future *** review offers valuable insight into the development of next-generation underwater robots well-suited for various oceanic applications,and aims to gain more attention of researchers and engineers to this growing field.

关键词： Buoyancy driven motion control oceanic applications system development underwater gliding robots

来源：评论

学校读者我要写书评

暂无评论

Analysis and Modeling of Magnetorheological Hydro-pneumatic Spring Based on Bouc-Wen Model 2nd

Analysis and Modeling of Magnetorheological Hydro-pneumatic ...

引用

2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Qian, Ruijing Jiang, Min Zhang, Yanni Wang, Guoping National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

In order to accurately describe the dynamic characteristics of magnetorheological hydro pneumatic spring, its working performance was tested, and a nonlinear model which can accurately describe its hysteresis characteristics was proposed based on Bouc-Wen model. Firstly, the mechanical properties of hydro pneumatic spring were tested, and its working characteristics were analyzed based on the test results. Secondly, the analysis of the output influence of each parameter in the Bouc Wen model is completed. The analysis results show that the nonlinear hysteretic system can be flexibly described by adjusting the parameters. Thirdly, based on Bouc-Wen model, a non-linear model of hydro pneumatic spring was proposed, and the target interval was narrowed by several iterations using genetic algorithm, thus the identification of model parameters was completed. Then, the relation function of each parameter in the model with current was obtained by ordinary least squares, and the non-linear model of hydro pneumatic spring was established. Finally, the numerical analysis of the magnetorheological hydro pneumatic spring nonlinear model was completed. The analysis results show that the calculation results of the hydro pneumatic nonlinear model agree well with the test results under the same input. The hydro pneumatic spring nonlinear model established can accurately describe its operating characteristics. This paper firstly applies Bouc-Wen model to the nonlinear modeling of new magnetorheological hydro-pneumatic springs, which provides a reference for the dynamic modeling of related magnetorheological hydro-pneumatic devices. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Design and Application of Multi-body Dynamics Optimization Design Software Architecture 2nd

Design and Application of Multi-body Dynamics Optimization D...

引用

2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Yang, Shuai Rong, Bao Lin, Shengtan Institute of Launch Dynamics National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

With the development of computer science, the optimization method has been widely used in the dynamic design process of complex multi-body systems. In the optimization design of complex multi-body systems in different fields, there are many problems, such as large amount of calculation, low efficiency and difficult optimization of complex optimization problems. In this paper, a multi-body dynamic optimization design software (MSTMM-OPT) is designed and implemented, which combines the transfer matrix method and the approximate model to realize the optimal design of single-multi-objective problems. The software has the main functions of sensitivity analysis, experiment design, approximate model construction, optimization and solving, and realizes each function and corresponding post-processing result display function combined with interface design. The software can realize the optimization design of complex systems. By calculating a series of standard test functions, the software is compared with the similar multidisciplinary optimization software ISIGHT software, which shows that the main functions of the software are equivalent to those of similar foreign software. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Sensitivity analysis

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：