检索结果-内蒙古大学图书馆

2nd International Conference on Machine Vision, Image Processing and Imaging technology, MVIPIT 2024

作者： Xu, Pengdao Zhang, Lin Zhao, Heng Wang, Yingjie Liu, Jiaoli Liu, Hui School of Information and Control Engineering China University of Mining and Technology Xuzhou China

ISBN: (纸本)9798331543037

Diabetic Retinopathy (DR) is known as one type of complication of long-term diabetes resulting in severe deterioration of vision, even blindness. Hard exudates (HE) are a type of diabetic macular edema and a prevalent cause of vision impairment for DR patients. Detecting HE is essential for DR diagnosis. Herein, a method for detecting HE with a dual-branch multi-scale approach is proposed. Specifically, the model consists of two branches: the main branch is designed to identify prominent features of the lesions, while the auxiliary branch utilizes a standard encoder and a ResNet50 encoder to identify deep features of the lesions, with two different resolution images serving as their inputs. Considering the variation in sizes and shapes, a multi-scale attention mechanism is integrated into the skip connections of the main branch, enabling the model to segment lesions of different scales. The feature maps finally obtained from both branches are aggregated before reaching the decoder, allowing the capture of contextual information from fundus images. Experiments on the IDRiD, E-Ophtha and DDR datasets show that the Dice of our method reached 74.53%, 68.87% and 59.40%, the IoU reached 59.40%, 52.52% and 42.25%, and the AUC reached 80.58%, 83.88% and 74.79% respectively. ©2024 IEEE.

关键词： Image segmentation

来源：评论

学校读者我要写书评

暂无评论

DGTD Methods for Bidirectional PIN Limiter Simulation Using MNA-SPICE

DGTD Methods for Bidirectional PIN Limiter Simulation Using ...

引用

2024 International Applied Computational Electromagnetics Society Symposium, ACES-China 2024

作者： Wang, Sifan Zhu, Qiangqiang Wu, Yang Hu, Zhiming Xu, Ruofeng Zhao, Lei China University of Mining and Technology School of Information and Control Engineering Xuzhou China

ISBN: (纸本)9798350355581

This paper proposed the Discontinuous Galerkin Time-Domain (DGTD) methods for simulating a bidirectional PIN limiter using the Modified Nodal Analysis-Simulation Program with Integrated Circuit Emphasis (MNA-SPICE). The proposed method combines the advantages of MNA-SPICE for circuit simulation with the high accuracy and efficiency of DGTD for electromagnetic field analysis. Numerical simulations demonstrate the effectiveness and reliability of this method. © 2024 IEEE.

关键词： Time domain analysis

来源：评论

学校读者我要写书评

暂无评论

Traveling wave fault location in distribution networks based on SSA-VMD 4

Traveling wave fault location in distribution networks based...

引用

4th IEEE International Conference on Electronic technology, Communication and information, ICETCI 2024

作者： Sun, Jingyang Pang, Qingle Zhou, Tai Qingdao University of Technology School of Information and Control Engineering Qingdao266520 China

ISBN: (纸本)9798350361643

In response to the issue of the empirical dependence of penalty parameter α and mode number K in the fault distance measurement accuracy for the variational mode decomposition-based fault location method, a distribution network traveling wave fault location method is proposed. This method optimizes the variational mode decomposition (VMD) using Sparrow Search Algorithm (SSA). By applying SSA to optimize VMD parameters, the optimal parameter combination [K,α] is obtained. Subsequently, using the optimized VMD parameters, the collected fault current traveling wave signals from the line are processed to determine the fault location, completing the fault distance measurement. The proposed fault location method is validated using transient simulation software ATP on a 10 kV distribution network system. The results indicate that this research method can rapidly and accurately determine the fault location, enhancing the reliability of traveling wave protection and fault distance measurement. © 2024 IEEE.

关键词： Variational mode decomposition

来源：评论

学校读者我要写书评

暂无评论

Introducing ionic mediators to construct peak-splitting manganese oxide structures for efficient oxygen reduction reactions

引用

Journal of Materials Science & technology 2024年第34期201卷 139-148页

作者： Haoliang Ma Xiong Li Mengmeng Tian Lanlan Li Xiaofei Yu Xinghua Zhang Zunming Lu Xiaojing Yang School of Materials Science and Engineering Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologyHebei University of TechnologyTianjin 300130China School of Artificial Intelligence and Information Technology Nanjing University of Chinese MedicineNanjing 210023China

Manganese oxides have received extensive attention in Oxygen Reduction Reaction(ORR)***-ever,the poor electrical conductivity and oxygen adsorption capacity of manganese oxides limit their development,so it is necessary to prepare catalysts with highly active *** propose a method to introduce an ionically conductive medium and induce structural distortion via thermodynamics,re-sulting in novel peak-splitting highly active structures for enhanced oxygen reduction *** the aid of refined structural analysis,High-angle annular dark-field(HAADF-STEM)imaging,and theoretical calculations,it is elucidated that this peak-splitting structure results from thermodynamically induced structural distortions and atomic *** introduction of the ionically conductive medium promotes the formation of Ag-O-Mn conductive bond bridges,which regulate the energy level matching of manganese oxides and oxygen *** thermodynamically induced structural distortion ex-poses new atomic planes in the material,and the creation of this highly active surface is accompanied by a redistribution of surface charges,which modulates the adsorption of manganese active sites with oxy-gen intermediates and greatly enhances the oxygen reduction ***,this Ag-OMS-2 with a novel split structure exhibits excellent activity at 0.836 V,superior to Pt/C kinetics and good *** preparation of such highly active structures is instructive for the development of manganese oxides.

关键词： Fuel cells Electrochemistry Manganese Structural distortion Ionically conductive medium

来源：评论

学校读者我要写书评

暂无评论

Energy-Efficient Data Collection over Underwater MI-Assisted Acoustic Cooperative MIMO WSNs

引用

China Communications 2023年第11期20卷 96-110页

作者： Qingyan Ren Yanjing Sun Song Li Bin Wang Zhengda Yu School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China Department of Information Technology and Electrical Engineering ETH ZurichZurich 8092Switzerland School of Communication and Information Engineering Xi’an University of Science and TechnologyXi’an 710054China Xuzhou Engineering Research Center of Intelligent Industry Safety and Emergency Collaboration Xuzhou 221000China

Underwater magnetic induction(MI)-assisted acoustic cooperative multiple-input-multipleoutput(MIMO) has been recently proposed as a promising technique for underwater wireless sensor networks(UWSNs).For the more,the energy utilization of energy-constrained sensor nodes is one of the key issues in UWSNs,and it relates to the network *** this paper,we present an energy-efficient data collection for underwater MI-assisted acoustic cooperative MIMO wireless sensor networks(WSNs),including the formation of cooperative MIMO and relay link ***,the cooperative MIMO is formed by considering its expected transmission range and the energy balance of nodes with ***,from the perspective of the node’s energy consumption,the expected cooperative MIMO size and the selection of master node(MN) are ***,to improve the coverage of the networks and prolong the network lifetime,relay links are established by relay selection algorithm that using matching ***,the simulation results show that the proposed data collection improves its efficiency,reduces the energy consumption of the master node,improves the networks’ coverage,and extends the network lifetime.

关键词： cooperative MIMO cooperative MIMO size data collection heterogeneous UWSNs relay link establishment

来源：评论

学校读者我要写书评

暂无评论

Data-driven output regulation control for constrained linear systems

引用

Science China(information Sciences) 2025年第3期68卷 338-353页

作者： Chaoyu XIA Yi DONG Chaoli WANG Shengyuan XU Shanghai Research Institute for Intelligent Autonomous Systems Tongji University College of Electronic and Information Engineering Shanghai Research Institute for Intelligent Autonomous SystemsTongji University Department of Control Science and Engineering School of Optical-Electrical and Computer EngineeringUniversity of Shanghai for Science and Technology Department of Automation Nanjing University of Science and Technology

This study introduces a data-driven approach for state and output feedback control addressing the constrained output regulation problem in unknown linear discrete-time systems. Our method ensures effective tracking performance while satisfying the state and input constraints, even when system matrices are not available. We first establish a sufficient condition necessary for the existence of a solution pair to the regulator equation and propose a data-based approach to obtain the feedforward and feedback control gains for state feedback control using linear programming. Furthermore, we design a refined Luenberger observer to accurately estimate the system state, while keeping the estimation error within a predefined set. By combining output regulation theory, we develop an output feedback control strategy. The stability of the closed-loop system is rigorously proved to be asymptotically stable by further leveraging the concept of λ-contractive sets.

关键词： output regulation constrained system data-driven.

来源：评论

学校读者我要写书评

暂无评论

Efficient retinal artery/vein classification with dense color-invariant feature learning

引用

Neural Computing and Applications 2025年第3期37卷 1255-1270页

作者： Chen, Xiaojuan Niu, Luyu Guo, Song College of Information and Control Engineering Xi’an University of Architecture and Technology Shaanxi Xi’an710055 China School of Civil Engineering and Environmental Science University of Oklahoma Oklahoma73019 United States

Automatic classification of retinal arteries and veins (A/V) is crucial for assisting clinicians in diagnosing cardiovascular and eye diseases. Deep learning models have been widely employed for A/V classification, achieving remarkable performance. However, two primary challenges persist: vessel discontinuity and A/V confusion. To address the vessel discontinuity challenge, we have designed a multi-scale convolution block (MCB) that combines square and strip convolutions. This design enhances the segmentation of tiny vessels by capturing more discriminative vessel features, effectively resolving the issue of vessel discontinuity. Meanwhile, to tackle the A/V confusion challenge, we propose a dense color-invariant feature learning (DCIFL) method to improve the model’s robustness to color variations in retinal images. Specifically, DCIFL uses KL divergences to align the distributions of both latent representations and prediction maps of the raw input image and its color-transformed counterpart. By integrating MCB and DCIFL, we introduce EAV-Net, an efficient model for retinal A/V classification. The proposed method has been tested on three publicly available datasets, achieving accuracies of 96.59%, 97.28%, and 99.34% on the AV-DRIVE, WIDE, and HRF datasets, respectively. These results demonstrate the superiority of our approach in outperforming state-of-the-art methods. Our code will be released at https://***/guomugong/EAV-Net. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2024.

关键词： Ophthalmology

来源：评论

学校读者我要写书评

暂无评论

Structure-performance relationship between denitration performance and catalytic interface morphologies of MnCeO_(x)/P84 catalytic filters

引用

Journal of Rare Earths 2025年第3期43卷 516-525,I0004页

作者： Bo Yang Yujie Lei Maosen Ni Liuying Wang Qiong Huang Mindong Chen Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing210044China

MnCeO_(x)/P84 catalytic filters with spherical,flower-like,cubic and rod-like catalytic interfaces were synthesized respectively,and their catalytic activities in the NH_(3)-SCR reaction were *** MnCeO_(x)/P84 catalytic filter with spherical catalytic interfaces(recorded as S-MnCeO_(x)/P84)exhibits the best catalytic denitration *** NO_(x)removal efficiency of S-MnCeO_(x)/P84 reaches the highest value of 98.6%at 160℃when the catalyst loading is 100 g/m^(2).At the same time,S-MnCeO_(x)/P84 exhibits good SO_(2)resistance and stability,achieving a NO_(x)removal rate of 83%at 190℃with 30 ppm SO_(2).The characterization results illustrate that the MnCeO_x active component in S-MnCeO_(x)/P84 is present in weak crystalline states,tightly wrapped around the surface of the filter fiber,and uniformly dispersed,and the mesopore is the main pore structure of the S-MnCeO_(x)/P84,which can provide a channel for the catalytic reaction to *** the same time,transmission electron microscopy(TEM)characterization shows that y-MnO_(2)is the main form of MnO_(2)in the S-MnCeO_(x)/*** analysis of H_(2)temperature programmed reduction(H_(2)-TPR).NH_(3)temperature programmed desorption(NH_(3)-TPD)and in-situ diffuse reflectance infrared spectra(DRIFTS)show that S-MnCeO_(x)/P84 has good redox ability at 100-200℃and has abundant Lewis acid sites and Bronsteds acid sites,which provides an important guarantee for its superior low-temperature NH_(3)-SCR denitration performance.

关键词： Catalytic filter Nitrogen oxides(NO_x) Denitration Catalytic interface Rare earths

来源：评论

学校读者我要写书评

暂无评论

A novel cognitive opportunistic communication framework for coal mines

引用

Coal International 2024年第1期272卷 41-50页

作者： Hu, Qingsong Ding, Juan Li, Shiyin School of Information and Control Engineering China University of Mining and Technology Xuzhou Jiangsu China Zhuhai College Jilin University Zhuhai Guangdong China

The dynamic advancement and harsh environment of coal mines often result in intermittent or regional wireless connection between sending nodes and receiving nodes and then lead to the decrease of transmission success ratio and even failure. To solve this problem, the environmental cognition and best-effort transmission are both demanded. Here we proposed a novel communication framework for coal mines based on a cognitive opportunistic concept to address the wireless network communication problems in coal mines, which consists of the node mobility model in coal mines, cooperative cognition of the time-varying communication environment, and the opportunistic routing of intermittent or regional connection scenarios. To realise this framework, real time neighbour discovering mechanisms and mobility perceiving strategies, called environment cognition, must be deeply investigated to predict the trends of node movement. The obtained results of environment cognition are then used to analyse current channel characteristics to determine and set optimum communication system parameters and reduce the probability of intermittent or regional connection. To address those unavoidable situations of the intermittent or regional connection, the opportunistic routing mechanism is brought forward to provide relatively stable data transmission. Finally, as an example of cognitive opportunistic mine communication of this framework, personnel evacuation under an emergency is discussed. © 2024 Tradelink Publications Ltd.. All rights reserved.

关键词： Coal mines

来源：评论

学校读者我要写书评

暂无评论

From earthquake resistance structure to earthquake resilience city–urban seismic resilience assessment

引用

Earthquake engineering and engineering Vibration 2025年第1期24卷 1-13页

作者： Xie Lili Zhao Yonggang Wen Weiping Zhai Changhai Key lab of Structures Dynamic Behaviour and Control of the Ministry of Education Harbin Institute of TechnologyHarbin 150090China Key lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology Harbin Institute of TechnologyHarbin 150090China Institute of Engineering Mechanics China Earthquake AdministrationHarbin 150080China

Earthquakes pose significant perils to the built environment in urban *** avert the calamitous aftermath of earthquakes,it is imperative to construct seismic resilient *** to the intricacy of the concept of urban seismic resilience(USR),its assessment is a large-scale system engineering *** assessment of USR should be based on the notion of urban seismic capacity(USC)assessment,which includes casualties,economic loss,and recovery time as *** loss is also included in the assessment of USR in addition to these *** assessment indicator system comprising five dimensions(building and lifeline infrastructure,environment,society,economy,and institution)and 20 indicators has been devised to quantify *** analytical hierarchy process(AHP)is utilized to compute the weights of the criteria,dimensions,and indicators in the urban seismic resilience assessment(USRA)indicator *** the necessary data for a city are obtainable,the seismic resilience of that city can be assessed using this *** illustrate the proposed methodology,a moderate-sized city in China was selected as a case *** assessment results indicate a high level of USR,suggesting that the city possesses strong capabilities to withstand and recover from potential future earthquakes.

关键词： urban seismic capacity urban seismic resilience assessment analytic hierarchy process functionality loss

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：