检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Suárez-Albela, Manuel Fraga-Lamas, Paula Fernández-Caramés, Tiago M. Dapena, Adriana González-López, Miguel Dpt. Electronics and Systems Faculty of Computer Science Universidade da Coruña A Coruña15071 Spain

This paper presents a novel home automation system named HASITE (Home Automation System based on Intelligent Transducer Enablers), which has been specifically designed to identify and configure transducers easily and fast. These features are especially useful in situations where many transducers are deployed, since their setup becomes a cumbersome task that consumes a significant amount of time and human resources. HASITE simplifies the deployment of a home automation system by using wireless networks, and both self-configuration and self-registration protocols. Thanks to the application of such three elements, HASITE is able to add new transducers by just powering them up. According to tests performed in different realistic scenarios, a transducer is ready to be used in less than 13 seconds. Moreover, all HASITE functionalities can be accessed through an API, which also allows for the integration of third-party systems. As an example, an Android application based on the API is presented. Remote users can use it to interact with transducers by just using a regular smartphone or a tablet. © 2024, CC BY.

关键词： Transducers

来源：评论

学校读者我要写书评

暂无评论

Enhancing Concept Drift Detection in Drifting and Imbalanced Data Streams through Meta-Learning

Enhancing Concept Drift Detection in Drifting and Imbalanced...

引用

IEEE International Conference on Big Data

作者： Gabriel Jonas Aguiar Alberto Cano Dpt. of Computer Science College of Engineering Virginia Commonwealth University Richmond VA USA

One of the biggest challenges in learning from data streams is adapting the classification model to new data. Due to the evolving nature of data streams, they are subject to a phenomenon known as concept drift that makes previously learned knowledge and model outdated. Therefore, concept drift must be efficiently detected in order to adapt the classification model. While there exists a plethora of drift detectors, with different mechanisms, selecting the most suitable for a new stream is a difficult task, since apriori knowledge may not be available and changes over time can affect the performance of the detector. This paper proposes a framework that exploits statistical and temporal meta-features from sliding windows to dynamically recommend a suitable drift detector in real-time for unseen chunks of streams according to its properties using Meta-Learning. We performed experiments on 10 real-world data streams and 18 synthetic generated data streams that were subject to concept drift and class imbalance in order to evaluate the performance of the proposed framework. Experiments exposed that the proposed approach was able to enhance the concept drift detection in a variety of scenarios demonstrating robustness to class imbalance and the advantages of dynamically selecting the drift detector.

关键词：

来源：评论

学校读者我要写书评

暂无评论

FPGAs (Can Get Some) SATisfaction

arXiv

引用

arXiv 2023年

作者： Govindasamy, Hariprasadh Esfandiari, Babak Garcia, Paulo Dpt. Systems Computer Engineering Carleton University Canada International School of Engineering Chulalongkorn University Thailand

We present a hardware-accelerated SAT solver suitable for processor/Field Programmable Gate Arrays (FPGA) hybrid platforms, which have become the norm in the embedded domain. Our solution addresses a known bottleneck in SAT solving acceleration: unlike prior state-of-the-art solutions that have addressed the same bottleneck by limiting the amount of exploited parallelism, our solver takes advantage of fine-grained parallelization opportunities by hot-swapping FPGA clause assignments at runtime. It is also the first modern completely open-source SAT accelerator, and formula size is limited only by the amount of available external memory, not by on-chip FPGA memory. Evaluation is performed on a Xilinx Zynq platform: experiments support that hardware acceleration results in shorter execution time across varying formula sizes, subject to formula partitioning strategy. We outperform prior state-of-the-art by 1.7x and 1.1x, respectively, for 2 representative benchmarks, and boast up to 6x performance increase over software-only implementation. © 2023, CC BY.

关键词： Field programmable gate arrays (FPGA)

来源：评论

学校读者我要写书评

暂无评论

Cryptanalysis of TRUTH: Fixing a Protocol to Make it 5G-Compliant

Cryptanalysis of TRUTH: Fixing a Protocol to Make it 5G-Comp...

引用

2024 International Symposium on Networks, computers and Communications, ISNCC 2024

作者： Munilla, J. Burmester, M. Caballero-Gil, P. University of Málaga Dpt. of Telecommunication Engineering Málaga29071 Spain Florida State Unviersity Department of Computer Science TallahasseeFL32304 United States University of La Laguna Dept. of Computer Science and Ai Tenerife La Laguna Spain

ISBN: (纸本)9798350364910

Trust and security are critical deployment require-ments for Industrial Internet of Things (IIoT) networks. A recent protocol, called TRUTH, integrates security mechanisms for authentication and privacy alongside a Dempster-Shafer based trust model, to assess the trustworthiness of collected data. We analyze this protocol and show that it does not comply with the implementation requirements of the 5G standard, and that flaws in the identification of involved parties hinder its adoption by 5G devices. We show how to fix this protocol and tailor it for the specific 5G implementation constraints, by enhancing its computational and communication performance. Finally, we show how to prove the security of this fixed protocol (TRUTH +) using the Tamarin automated verification tool. © 2024 IEEE.

关键词： Authentication Protocol

来源：评论

学校读者我要写书评

暂无评论

DECOMPOSITION BY PARTIAL LINEARIZATION IN MULTIUSER systems

DECOMPOSITION BY PARTIAL LINEARIZATION IN MULTIUSER SYSTEMS

引用

IEEE International Conference on Acoustics, Speech, and Signal Processing

作者： G. Scutari F. Facchinei P. Song D. P. Palomar J.-S. Pang Dpt. of Electrical Eng. State University of New York (SUNY) at Buffalo Dpt. of Computer Control and Management Eng. University of Rome "La Sapienza" Dpt. of Electronic and Computer Eng. Hong Kong Univ. of Science and Technology Dpt. of Industrial and Enterprise Systems Eng. University of Illinois

ISBN: (纸本)9781479903573

We propose a decomposition framework for the distributed optimization of general nonconvex sum-utility functions arising in the design of wireless multi-user interfering systems. Our main contributions are: i) the development of the first provably convergent Jacobi best-response algorithm, where all users simultaneously solve a suitably convexified version of the original sum-utility optimization problem;ii) the derivation of a general dynamic pricing mechanism that provides a unified view of existing pricing schemes that are based, instead, on heuristics;and iii) a framework that can be easily particularized to well-known applications, giving rise to practical algorithms that outperform all existing ad-hoc methods proposed for very specific problems. Our framework contains as special cases well-known gradient algorithms for nonconvex sum-utility problems, and many block-coordinate descents schemes for convex functions.

关键词： Nonconvex social problems Parallel & distributed optimization Successive convex approximation decomposition Linearization Frameworks Partial Heuristics Pricing algorithms descent

来源：评论

学校读者我要写书评

暂无评论

A sub-1V CMOS Instrumentation Amplifier for an AFE Interfacing with Sensors 5

A sub-1V CMOS Instrumentation Amplifier for an AFE Interfaci...

引用

5th International Young Engineers Forum in Electrical and computer engineering, YEF-ECE 2021

作者： Neves, Francisco Oliveira, João P. Oliveira, Henrique Dpt. of Electrical and Computer Engineering NOVA School of Science and Technology Caparica Portugal CTS UNINOVA Caparica Portugal Instituto de Telecomunicações Lisboa Portugal Instituto Politécnico de Beja Beja Portugal

ISBN: (纸本)9781665412643

This paper presents the design of a low-noise capacitively-coupled instrumentation amplifier with a sub-1V power supply, which is suitable for low-power sensor data acquisition systems. This amplifier is part of an Analog Front-end (AFE) which is implemented in a standard 130nm bulk CMOS technology. Beside the high-impedance input amplifier, the AFE includes a programmable switch-capacitor bandpass filter and a sigma-delta modulator. A chopper modulation technique is implemented to further reduce the flicker noise, with a positive feedback network to compensate the resulting low input impedance. The preliminary post-layout simulated results of the instrumentation amplifier achieves a total power consumption of 2.6µW, with an open loop gain of 87dB and a GBW of 584kHz and with the input reffered noise of 4.6µVrms and a NEF value of 4. The maximum CMRR of the amplifier is 101dB and the PSRR minus is greater than 66dB. For a sub 1V power supply, the input frequency range is up to 10 kHz. © 2021 IEEE.

关键词： Bandpass filters

来源：评论

学校读者我要写书评

暂无评论

Miniaturized multi-band stopband filter using circular split ring resonator and null gap separations between all parallel lines

引用

Progress In Electromagnetics Research C 2020年 106卷 137-150页

作者： Ahmed, Badiaa Ait Aghzout, Otman Naghar, Azzeddin Alejos, Ana V. Dpt. of Computer Science Engineering SIGL-Lab. ENSA University of Abdelmalek Essaadi Tétouan Morocco BSA-Innovation LAB Radio Frequency Systems RFS Lannion France Dpt. of Signal Theory and communications University of Vigo Pontevedra Spain

This paper presents a new multi-band stopband filter loaded by a shorted metamaterial circuit. Firstly, two filters loaded by stubs and open ring resonators (ORRs) are studied and compared. The ORRs allow more effects in terms of miniaturization by a shifting toward low frequencies and rejection bandwidth (57.34%). To improve the filter efficiency, coupled split ring resonators (SRRs) are used. The final filter is characterized by a miniaturized size of 18.840 mm2, wide rejection bandwidth, high selectivity level, and multiple resonances over S, C, X, and Ku bands. L-C equivalent circuit model filter and other characteristics are investigated. A prototype of the filter with coupled SRRs has been fabricated and measured. Good matching among EM-simulation, equivalent circuit modelling, and measured results are achieved. © 2020, Electromagnetics Academy. All rights reserved.

关键词： Circuit simulation

来源：评论

学校读者我要写书评

暂无评论

A novel W-band radar for airport traffic monitoring: implementation, first operational results, perspectives

A novel W-band radar for airport traffic monitoring: impleme...

引用

International Kharkov Symposium on Physics and engineering of Microwaves, Millimeter, and Submillimeter Waves

作者： F. Mauro G. Galati M. Naldi Oerlikon Contraves Rome Italy Dpt. of Computer Science SYstems and Production Engineering (DISP) Roma Italy Department of Computer Science Systems and Production Engineering (DISP) Tor Vergate University Rome Italy

High resolution requirements for airport surface traffic monitoring with lightweight, small, all-weather sensors call for the use of a network of millimetre-wave radars to perform the surveillance function in the surface movement control and guidance system. In this paper a W-band radar employed as the basic sensor is described. Some results of recent and present field trials are reported.

关键词： Radar Airports Monitoring Communication system traffic control Air traffic control Sensor systems Surveillance Lighting control Control systems Sensor phenomena and characterization

来源：评论

学校读者我要写书评

暂无评论

A deformable model-based visual system for mobile robot topologic navigation

A deformable model-based visual system for mobile robot topo...

引用

Proceedings 2003 IEEE/RSJ International Conference on Intelligent Robots and systems (IROS 2003) (Cat. No.03CH37453)

作者： M. Mata J.M. Armingol A. de la Escalera F.J. Rodriguez Computer Architecture and Automation Dpt. Universidad Europea de Madrid Madrid Spain Systems Engineering and Automation Dpt. Universidad Carlos III de Madrid Madrid Spain

Deformable models have been intensively studied in image analysis through the last decade, and are used for detection and recognition of flexible or rigid templates under diverse viewing conditions. Genetic algorithm (GA) based deformable models are used for generic visual landmark detection and interpretation. The developed system allows topologic localization and navigation using natural and artificial landmarks, exploiting deformable models' ability for handling landmark perspective variations. The resulting perception module has been integrated successfully in a complex navigation system. Various experimental results in real environments are presented on this paper, showing the effectiveness and capacity of the landmark detection and reading system.

关键词： Deformable models Visual system Mobile robots Navigation Robotics and automation Image recognition Object detection Object recognition Uncertainty Image motion analysis

来源：评论

学校读者我要写书评

暂无评论

A Probability Model for the Size of Investment Projects

A Probability Model for the Size of Investment Projects

引用

computer Modeling and Simulation, EMS, UKSIM European Symposium on FLAGGED

作者： Maurizio Naldi Dpt. of Computer Science and Civil Engineering Università di Roma Tor Vergata Rome Italy

ISBN: (纸本)9781509002078

Project size, as measured by the amount of investment required, is a relevant parameter to be used in project selection. The evaluation of a project portfolio must consider the variety of project sizes that may be met, so that a proper model should be adopted to describe that variety, especially for its use in simulation. In this paper, a log-normal probability model is suggested to describe the dispersion of project sizes within a project portfolio. The model is obtained on the basis of two real datasets spanning over ten years of observations, and after comparison with competing Gamma and Pareto models. The parameters of the log-normal model are provided as resulting from the best-fit procedure, and indications are also given for the values to use in a simulation study.

关键词： Portfolios Computational modeling Predictive models Data models Investment Probability density function Companies

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：