检索结果-内蒙古大学图书馆

IEEE International Conference on Cloud Computing Technology and science (CloudCom)

作者： Matthias Frei Reinhard German Anatoli Djanatliev Fraunhofer Institute for Integrated Circuits IIS Erlangen Germany Dept. of Computer Science Computer Networks and Communication Systems University of Erlangen-Nürnberg Germany

ISBN: (纸本)9781665463683

The Multi-Access Edge Computing (MEC) paradigm enables services that have strict network requirements like a maximum tolerable latency or a minimum bandwidth requirement. This consequently leads to a tight coupling of networks and computing, since the service can only function correctly if its communication requirements are met. Numerous existing strategies for MEC service deployment or resource selection put the characteristics of computing demands correlated with the free capacity of nodes or inter-service dependencies in their focus. In contrast, our work is a complementary attempt to enable especially the consideration of the strict communication needs of MEC services. It shows how edge features, i.e., knowledge of edge network conditions and service requirements, can be used to support resource selection and orchestration strategies. We consider and discuss how our model meQ can be applied in real communication systems as well as in heterogeneous networks, where clients may have multiple uplink connections. To enable communication-optimized selection strategies, meQ consists of two major components. A sharable, graph-based network representation and online searches to determine resources. The model benefits from existing work and limits the search space with the use of edge features. A performed simulation study demonstrates the benefits of meQ. The results show that it is possible to significantly reduce the search space, leading to lower search efforts also in large network graphs. An additional system-level simulation proves integration and applicability under realistic conditions.

关键词： Knowledge engineering Couplings computers Cloud computing Multi-access edge computing communication systems Computational modeling

来源：评论

学校读者我要写书评

暂无评论

Shaping the future of the application of quantum computing in intelligent transportation system

引用

Intelligent and Converged networks 2021年第4期2卷 259-276页

作者： Sumin Wang Zhi Pei Chao Wang Jie Wu Key Laboratory of Specialty Fiber Optics and Optical Access Networks Joint International Research Laboratory of Specialty Fiber Optics and Advanced CommunicationShanghai Institute for Advanced Communication and Data ScienceShanghai UniversityShanghai 200444China Department of Information Engineering Gannan University of Science and TechnologyGanzhou 341000China Department of Computer and Information Sciences Temple UniversityPhiladelphiaPA 19122USA

The intelligent transportation system(ITS)integrates a variety of advanced science and technology to support and monitor road traffic systems and accelerate the urbanization process of various *** paper analyzes the shortcomings of ITS,introduces the principle of quantum computing and the performance of universal quantum computer and special-purpose quantum computer,and shows how to use quantum advantages to improve the existing *** application of quantum computer in transportation field is reviewed from three application directions:path planning,transportation operation management,and transportation facility *** to the slow development of the current universal quantum computer,the D-Wave quantum machine is used as a breakthrough in the practical *** paper makes it clear that quantum computing is a powerful tool to promote the development of ITS,emphasizes the importance and necessity of introducing quantum computing into intelligent transportation,and discusses the possible development direction in the future.

关键词： quantum computing intelligent transportation quantum annealing D-wave quantum computer

来源：评论

学校读者我要写书评

暂无评论

Artificial Intelligence Approaches in Healthcare Informatics Toward Advanced Computation and Analysis

引用

Open Biomedical Engineering Journal 2024年 18卷

作者： Priyanka, E.B. Thangavel, S. Mohanasundaram, R. Subramaniam, Shamala Department of Mechatronics Engineering Kongu Engineering College Perundurai India School of Computer Science and Engineering Vellore Institue of Technology Tamil Nadu Vellore India Department of Communication Technology and Networks Faculty of Computer Science and Information Technology Universiti Putra Malaysia Serdang 43400 Malaysia

Introduction: Automated Machine Learning or AutoML is a set of approaches and processes to make machine learning accessible for non-experts. AutoML can exhibit optimized enhancement of an existing model or suggest the best models for precise datasets. In the field of computerized Artificial Intelligence (AI), medical experts better utilize AI models with available encrypted information science ability. Methods: This paper aims to characterize and summarize the stage-wise design of Automated Machine Learning (AutoML) analysis e-healthcare platform starting from the sensing layer and transmission to the cloud using IoT (Internet of Things). To support the AutoML concept, the Auto Weka2.0 package, which serves as the open-source software platform, holds the predominant priority for experimental analysis to generate statistical reports. Results: To validate the entire framework, a case study on Glaucoma diagnosis using the AutoML concept is carried out, and its identification of best-fit model configuration rates is also presented. The Auto-ML built-in model possesses a higher influence factor to generate population-level statistics from the available individual patient histories. Conclusion: Further, AutoML is integrated with the Closed-loop Healthcare Feature Store (CHFS) to support data analysts with an automated end-to-end ML pipeline to help clinical experts provide better medical examination through automated mode. © 2024 The Author(s). Published by Bentham Open.

关键词： AI models AutoML Closed loop healthcare feature store Data analytics Glaucoma Medical datasets

来源：评论

学校读者我要写书评

暂无评论

5G NR Support for UAV-Assisted Cellular communication on Non-Terrestrial Network

5G NR Support for UAV-Assisted Cellular Communication on Non...

引用

2022 European Wireless Conference, EW 2022

作者： Borromeo, Justine Cris Kondepu, Koteswararao Andriolli, Nicola Valcarenghi, Luca Bassoli, Riccardo Fitzek, Frank H.P. Telecommunications Computer Engineering and Photonics Institute Scuola Superiore Sant'Anna Pisa Italy Department of Computer Science and Engineering Indian Institute of Technology Dharwad Dharwad India Institute of Electronics Information Engineering and Telecommunications National Research Council of Italy Pisa Italy Deutsche Telekom of Communication Networks Technische Universität Dresden Dresden Germany

ISBN: (纸本)9781713865698

The use of Unmanned Aerial Vehicles (UAVs) to provide cellular communication in rural areas, disaster-hit regions, or during temporary events is gaining increasing attention due to its flexible deployment and energy efficiency compared to fixed terrestrial infrastructures. However, UAVs experience significant challenges such as the limited wireless connectivity provided by Ka-band frequency, and their flying time is constrained by the energy consumed during the data transmission and the complexity of the Baseband Unit (BBU) implementation. Using different lower layer functional split options (e.g., 7-1, 7-2, 7-2x, and 7-3), this paper provides a theoretical and simulation analysis of the 5G New Radio (NR) physical layer specifications to achieve a fronthaul bandwidth that can be supported by the Ka-band. These functional split options are then compared in terms of fronthaul bandwidth, theoretical throughput, connection density, number of functions deployed at the UAV, and the energy consumption of the fronthaul transmission to determine which functional split option is better suited for a multi-layered Non-Terrestrial Network (NTN). © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： Bandwidth

来源：评论

学校读者我要写书评

暂无评论

A design method for high fabrication tolerance integrated optical mode multiplexer

引用

science China(Information sciences) 2020年第6期63卷 184-194页

作者： Bitao SHEN Haowen SHU Linjie ZHOU Xingjun WANG State Key Laboratory on Advanced Optical Communication Systems and Networks Department of ElectronicsSchool of Electronics Engineering and Computer Science Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Nano-optoelectronics Frontier Center of Ministry of Education Peking University

The tapered asymmetric directional coupler has the potential to realize high fabrication tolerance and high transmission efficiency on-chip mode multiplexer. However, the geometry parameter selection of tapered structure remains empirical. In this paper, we propose a design method for the tapered structure based on genetic algorithm. Combined with the adjusted coupling equations and interpolation method, lowtime-cost optimization can be realized. Three mode multiplexers(TE0&TE1, TE0&TE2 and TE0&TE5)are designed by our method. According to simulation results, the insertion loss of the designed devices is lower than 1.8 dB and the crosstalk is lower than-15 dB when the fabrication error is within required range(±10 nm for TE0&TE2 and TE0&TE5, and ±20 nm for TE0&TE1) in the bandwidth of 1.5–1.6 μm. In addition, the entire optimization process takes only 2 h for each device, which is around the time cost of a single 3 D simulation.

关键词： mode multiplexer directional coupler taper structure coupled-mode theory genetic algorithm

来源：评论

学校读者我要写书评

暂无评论

Energy-Efficient Near-Field Wideband Beamforming with Circular Arrays

Energy-Efficient Near-Field Wideband Beamforming with Circul...

引用

IEEE Conference on Global communications (GLOBECOM)

作者： Yunhui Guo Yang Zhang Zhaolin Wang Yuanwei Liu Zhiguo Ding State Key Laboratory of Integrated Service Networks Xidian University Xi'an China School of Electronic Engineering and Computer Science Queen Mary University of London London U.K. Department of Computer and Communication Engineering 6G Center Khalifa University Abu Dhabi UAE

ISBN: (数字)9798350351255

ISBN: (纸本)9798350351262

The beamforming performance of the uniform circular array (UCA) in near-field wideband communication systems is investigated. Firstly, the unique beam squint effect in near-field wideband UCA systems is analyzed in both the distance and angular domains. It is demonstrated that the generated beams at different frequencies are focused at different locations, resulting in significant beamforming loss. To alleviate this unique beam squint effect and facilitate beamfocusing, an energy-efficient beamforming scheme based on the true-time delay (TTD) architecture is proposed. Specifically, the phase shifters (PSs) and the time delay of TTDs are designed based on the analytical formula for beamforming gain. Additionally, the minimum number of TTDs required to achieve a predetermined beamforming gain while minimizing energy consumption is quantified. Numerical results show that the proposed beamforming scheme effectively eliminates the near-field beam squint and outperforms the conventional schemes in terms of spectral efficiency and energy efficiency.

关键词： Energy consumption Array signal processing Spectral efficiency Simulation Phase shifters Massive MIMO Energy efficiency Delays Global communication Wideband

来源：评论

学校读者我要写书评

暂无评论

A Mixture Model Parameters Estimation Algorithm for Inter-Contact Times in Internet of Vehicles

引用

computers, Materials & Continua 2021年第11期69卷 2445-2457页

作者： Cheng Gong Xinzhu Yang Wei Huangfu Qinghua Lu School of Computer and Communication Engineering University of Science and Technology BeijingBeijing100083China Beijing Advanced Innovation Center for Materials Genome Engineering School of Computer and Communication EngineeringUniversity of Science and Technology Beijing100083China Shunde Graduate School of University of Science and Technology Beijing Foshan City528300GuangdongChina Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services University of Science and Technology BeijingBeijing100083China Commonwealth Scientific and Industrial Research Organization Canberra2600Australia

communication opportunities among vehicles are important for data transmission over the Internet of Vehicles(IoV).Mixture models are appropriate to describe complex spatial-temporal *** calculating the expectation of hidden variables in vehicle communication,Expectation Maximization(EM)algorithm solves the maximum likelihood estimation of parameters,and then obtains the mixture model of vehicle communication ***,the EM algorithm requires multiple iterations and each iteration needs to process all the *** its computational complexity is high.A parameter estimation algorithm with low computational complexity based on Bin Count(BC)and Differential Evolution(DE)(PEBCDE)is *** overcomes the disadvantages of the EM algorithm in solving mixture models for big *** order to reduce the computational complexity of the mixture models in the IoV,massive data are divided into relatively few time intervals and then *** to these few counted values,the parameters of the mixture model are obtained by using DE *** modeling and analysis of simulation data and instance data,the PEBCDE algorithm is verified and discussed from two aspects,i.e.,accuracy and *** numerical solution of the probability distribution parameters is obtained,which further provides a more detailed statistical model for the distribution of the opportunity interval of the IoV.

关键词： Internet of vehicles opportunistic networks inter-contact times mixture model parameters estimation

来源：评论

学校读者我要写书评

暂无评论

Multidimensional Voronoi Constellations vs. Short Blocklength Probabilistic Shaping: A Comparison for Multilevel Coding Approach

arXiv

引用

arXiv 2024年

作者： Sheng, Yajie Chen, Bin Lei, Yi Deng, Jingxin Xu, Jiwei Fu, Mengfan Zhuge, Qunbi Li, Shen Department of Computer Science and Information Engineering Hefei University of Technology Hefei China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China Department of Electrical and Computer Engineering Université Laval Québec Canada

Performance of concatenated multilevel coding with probabilistic shaping (PS) and Voronoi constellations (VCs) is analysed over AWGN channel. Numerical results show that VCs provide up to 1.3 dB SNR gains over PS-QAM ... 详细信息

关键词： Probability distributions

来源：评论

学校读者我要写书评

暂无评论

Hybrid Near-Far Field Channel Estimation for Holographic MIMO communications

arXiv

引用

arXiv 2024年

作者： Yue, Shaohua Zeng, Shuhao Liu, Liang Eldar, Yonina C. Di, Boya The State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China The Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Kong The Faculty of Mathematics and Computer Science Weizmann Institute of Science Rehovot7610001 Israel

Holographic MIMO communications, enabled by large-scale antenna arrays with quasi-continuous apertures, is a potential technology for spectrum efficiency improvement. However, the increased antenna aperture size extends the range of the Fresnel region, leading to a hybrid near-far field communication mode. The users and scatterers randomly lie in near-field and far-field zones, and thus, conventional far-field-only and near-field-only channel estimation methods may not work. To tackle this challenge, we demonstrate the existence of the power diffusion (PD) effect, which leads to a mismatch between the hybrid-field channel and existing channel estimation methods. Specifically, in far-field and near-field transform domains, the power gain of one channel path may diffuse to other positions, thus generating fake paths. This renders the conventional techniques unable to detect those real paths. We propose a PD-aware orthogonal matching pursuit algorithm to eliminate the influence of the PD effect by identifying the PD range, within which paths diffuse to other positions. PD-OMP fits a general case without prior knowledge of near-field and far-field path numbers and the user’s location. The computational complexity of PD-OMP and the Cramér-Rao Lower Bound for the sparse-signal-recovery-based channel estimation are also derived. Simulation results show that PD-OMP outperforms state-of-the-art hybrid-field channel estimation methods. © 2024, CC BY-NC-ND.

关键词： Channel estimation

来源：评论

学校读者我要写书评

暂无评论

Lightdnn: A Lightweight Dual Neural Network Framework for Rapid Multiphysics Reconstruction in Hot Die Forging

SSRN

引用

SSRN 2025年

作者： Wang, Jue Xu, Xinyi Ye, Changxin Zhao, Fan Huangfu, Wei School of Computer and Communication Engineering University of Science and Technology Beijing Beijing100083 China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services School of Computer and Communication Engineering University of Science and Technology Beijing Beijing100083 China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and Technology University of Science and Technology Beijing University of Science and Technology Beijing Beijing100083 China Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China

Rapid and accurate reconstruction of multiphysics during hot die forging processes is essential for manufacturing optimization, quality assurance, and intelligent process control. While conventional finite element-based acceleration methods fail to meet sub-second requirements, existing sequence-based data-driven approaches suffer from two fundamental limitations: physically inconsistent predictions due to coordinate misalignment, and unsustainable computational costs from sequence-length-dependent parameter scaling. To address these challenges, we propose LightDNN, a lightweight dual-neural network framework that employs a coordinate-oriented paradigm to ensure physical consistency while maintaining computational efficiency for multiphysics reconstruction of hot die *** proposed framework operates through two components: a boundary nodes tracking network that describes the geometric deformation by predicting nodal coordinates' evolution, and a physical fields reconstruction network that reconstructs multiphysics distributions through coordinate-based physical quantities *** validation on 1,960 samples with different forging strategies demonstrates superior performance over existing sequential models in both geometric deformation prediction and 9 physical quantities distributions reconstruction, while simultaneously achieving a 96-98% reduction in number of parameters compared to conventional sequential models and millisecond-scale inference capability (62.68±3.79 ms on CPU and 2.91±0.26 ms on GPU).The proposed framework demonstrates strong potential for industrial deployment while establishing a novel paradigm for efficient multiphysics modeling in hot die forging processes. © 2025, The Authors. All rights reserved.

关键词： Forgings

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：