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4th IEEE International Conference on Electronic Communications, Internet of Things and Big Data, ICEIB 2024

作者： Tsai, Shang-Te Wu, Zong-Rong Lin, Pin-Hsuan Chen, Chin-Hsiung Chien, Wei Chang, Yu-Cheng School of Art and Design Sanming University Fujian365004 China National Yunlin University of Science and Technology Department of Technical and Vocational Program in Artificial Intelligence Yunlin Taiwan National Central University Department of Business Administration Taoyuan Taiwan Commercial Industrial Vocational Senior High School Department of Electrical Engineering New Taipei Municipal Tamsui New Taipei Taiwan Lunghwa University of Science and Technology Department of Computer Information and Network Engineering Taoyuan Taiwan National Taipei University of Technology Department of Computer Science and Information Engineering Taipei Taiwan

ISBN: (纸本)9798350360721

We reviewed the application of modern technology for rapid and accurate multi-person real-time pose detection in the hazardous field of electrical engineering. We focused on two leading pose detection technologies: YOLOv8 and OpenPose. To optimize performance, we integrated these two techniques into the LSTM model for training and investigated frame rates and accuracy. © 2024 IEEE.

关键词： Accident prevention

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Multiscale Numerical Modeling for Near-Field Microwave Impedance Microscopy

Multiscale Numerical Modeling for Near-Field Microwave Imped...

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CLEO: Science and Innovations, S and I 2022

作者： Tami, Diego Ohlberg, Douglas A.A. Ramirez, Jhonattan C. do Rego, Cássio Gonçalves Medeiros-Ribeiro, Gilberto Graduate Program in Electrical Engineering Universidade Federal de Minas Gerais Brazil Microscopy Center Universidade Federal de Minas Gerais Brazil Department of Electronic Engineering Universidade Federal de Minas Gerais Brazil Computer Science Department Universidade Federal de Minas Gerais Brazil

In this work, we analyzed numerically a multiscale nanosystem based on sMIM on TBG. Spontaneous formation of a water-meniscus by the approximation between the tip-sample concentrates the microwave fields, reaching res...

ISBN: (纸本)9781557528209

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RIS-Aided Uplink NOMA in the Presence of CCI

RIS-Aided Uplink NOMA in the Presence of CCI

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Telecommunications Forum (TELFOR)

作者： Volkan Özduran Ehsan Soleimani-Nasab Istanbul University-Cerrahpaşa Istanbul Türkiye Department of Electrical and Computer Engineering Graduate University of Advanced Technology Kerman Iran

ISBN: (数字)9798350391060

ISBN: (纸本)9798350391077

This paper investigates the co-channel interference (CCI) effects on the uplink non-orthogonal multiple access (NOMA) users. The investigation considers that two NOMA users communicate with the base station (BS). The NOMA user close to the BS has a line of sight with the BS, while the far user only communicates with the BS via passive and absorptive reconfigurable intelligent surface (RIS). The investigation also considers that BS is under the effect of the randomly deployed CCI and interfere the received signal from the NOMA users. Performance of the aforementioned system is measured by means of the outage probability performance metric. Analytical derivations are verified by means of the Monte Carlo-based computer simulations. The results indicate that increasing the number of RIS elements degrades the outage performance for the near user but enhances it for the far user. Furthermore, the findings reveal that CCI causes minor loss in coding gain for NOMA users when the RIS has a small number of elements. However, this negative impact of CCI diminishes as the number of RIS elements increases.

关键词： Measurement NOMA Monte Carlo methods Quality of service Reconfigurable intelligent surfaces Probability Power system reliability Telecommunications Uplink Interchannel interference

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Optical Fiber Coiled Sensors for Acoustic Oblique Wave Detection using Distributed Acoustic Sensing

Optical Fiber Coiled Sensors for Acoustic Oblique Wave Detec...

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IEEE SENSORS

作者： Frederico A. Jahnert Beatriz Brusamarello Danilo F. Gomes Sérgio T. de Camargo Manoel F. da Silva Jean C. Cardozo da Silva Cicero Martelli Jucélio T. Pereira Carlos A. Bavastri Graduate Program in Mechanical Engineering Federal University of Parana (UFPR) Curitiba Brazil Graduate Program in Electrical and Computer Engineering Federal University of Technology-Paraná (UTFPR) Curitiba Brazil Petrobras Research and Development Program Rio de Janeiro Brazil

Distributed Acoustic Sensors (DAS) are able to measure dynamic strain and temperature signals quantitatively along several kilometers of optical fiber using the properties of backscattering light. A drawback of DAS is the sensing resolution of around 1 meter long. This paper analyses the use of DAS as a vibration sensor for a thin plate structure using an acoustic excitation. A coiled method of arranging the sensing optical fibers enhances the measured signal and using a calibration method, the strain in the sensed region is obtained. The method can be used to characterize structures acoustically allowing the structure to detect the direction and reconstruct nearby acoustic events. Acoustic excitations were performed using a speaker at 1 meter distance to a 1 millimeter thick free-free 40 centimeters by 73 centimeter instrumented stainless steel plate inside an anechoic chamber. Results measured using reference microphones and accelerometers were compared to the optical fiber sensor through a Finite Element Model. The results demonstrate that the optical fiber system is able to measure the frequency response with an average 54 dB sound pressure level sound source chirp signal for flexural modes with a clear differentiation between angles of incidence up to 500 Hz.

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A Method of Predicting Worker’s Skill Level in SMEs for Estimating Changeover Time 23

A Method of Predicting Worker’s Skill Level in SMEs for Est...

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Proceedings of the 13th International Conference on the Internet of Things

作者： Yuto Shibuya Taiga Yamauchi Shogo Ogihara Takafumi Kawasaki Yuki Okura Takeshi Iwamoto Electrical and Computer Engineering Graduate School of Engineering Toyama Prefectural University Japan \t\t\t\t\t\t Electrical and Computer Engineering Graduate School of Engineering Toyama Prefectural University Japan \t\t\t\t\t\t Department of Information Systems Engineering Toyama Prefectural University Japan

ISBN: (纸本)9798400708541

IoT has been introduced to improve production efficiency in small and medium-sized manufacturing companies, and it is mainly aimed at measuring machinery statuses. The improvement of changeover time is significant for production efficiency and the changeover time is depends on the skill level of each worker. Thus, measuring the statuses of human-mediated processes is needed. Moreover, if the skill levels of each worker were quantified, it would be possible to predict setup changeover time based on the quantitative evaluation. Therefore, we define the components of worker proficiency in small and medium-sized manufacturing companies, measure and quantify them, and estimate the proficiency level of each worker. This study enables accurate prediction of setup time by realizing the above. It was 60% to predict the setup changeover time more accurately than the scheduled time, and some components showed a proportional relationship with skill level.

关键词： Changeover Time IoT Manufacturing Skilled Workers

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Age optimal sampling for unreliable channels under unknown channel statistics 21

Age optimal sampling for unreliable channels under unknown c...

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21st International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2023

作者： He, Hongyi Tang, Haoyue Pan, Jiayu Wang, Jintao Song, Jian Tassiulas, Leandros China Department of Electronic Engineering Tsinghua University Beijing China Department of Electronic Engineering Yale University New Haven United States Department of Electrical and Computer Engineering The Ohio State University ColumbusOH United States Research Institute of Tsinghua University in Shenzhen Shenzhen China Shenzhen International Graduate School Tsinghua University Shenzhen China

ISBN: (纸本)9783903176553

In this work, we study a system with a sensor forwarding status update to the receiver through an error-prone channel, and the receiver sends the transmission results to the sensor via a reliable link. We assume both transmission links suffer from random delays. We use Age of Information (AoI) to measure the freshness of the status information at the receiver. Our goal is to design a sampling policy that minimizes the expected time average AoI when the channel statistics are unknown. The problem is reformulated into a renewal-reward process optimization, and an online algorithm based on the Robbins-Monro algorithm is proposed. We prove that when the forward and backward transmission delays are bounded, the AoI difference between the online algorithm and the optimal policy decays with rate O(ln K/K), where K is the number of successful transmissions. Simulation results validate the performance of our proposed algorithm. © 2023 IFIP.

关键词： Sampling

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Machine-Learning-Enhanced Quantum Optical Storage in Solids

arXiv

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arXiv 2024年

作者： Lei, Yisheng An, Haechan Li, Zongfeng Hosseini, Mahdi Department of Electrical and Computer Engineering Applied Physics Program Northwestern University EvanstonIL60208 United States Elmore Family School of Electrical and Computer Engineering Purdue University West LafayetteIN47907 United States

Quantum memory devices with high storage efficiency and bandwidth are essential elements for future quantum networks. Solid-state quantum memories can provide broadband storage, but they primarily suffer from low storage efficiency. We use passive optimization and machine learning techniques to demonstrate nearly a 6-fold enhancement in quantum memory efficiency. In this regime, we demonstrate coherent and single-photon-level storage with a high signal-to-noise ratio. The optimization technique presented here can be applied to most solid-state quantum memories to significantly improve the storage efficiency without compromising the memory bandwidth. © 2024, CC BY.

关键词： Signal to noise ratio

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Gallium Oxide as Photonic Integrated Platforms in the UV-Visible Spectra

Gallium Oxide as Photonic Integrated Platforms in the UV-Vis...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Zhou, Jingan Zhao, Xuan Xu, Rui Zhang, Xiang Fu, Kai Li, Tao Xu, Mingfei Luo, Shisong He, Ziyi Robinson, Jacob T. Zhu, Hanyu Ajayan, Pulickel M. Zhang, Xiaodong Zhao, Yuji Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States School of Electrical Computer and Energy Engineering Arizona State University TempeAZ85287 United States Nanofabrication facility Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Jiangsu Suzhou215123 China

We report the Ga2O3 as photonic integrated platforms and its nonlinear optical effects in the UV-visible spectra. A low propagation loss of 3.7 dB/cm and second-order susceptibility of x(2)=4.89xl03pm/V were obtained.... 详细信息

ISBN: (纸本)9781957171258

关键词： Gallium compounds

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Efficient Pumping of Spectral Holes in a Tm3+: YAG Crystal for Broadband Quantum Optical Storage

arXiv

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arXiv 2024年

作者： Lei, Yisheng Li, Zongfeng Hosseini, Mahdi Department of Electrical and Computer Engineering and Applied Physics Program Northwestern University EvanstonIL60208 United States Elmore Family School of Electrical and Computer Engineering Purdue University West LafayetteIN47907 United States

Quantum memory devices with high storage efficiency and bandwidth are essential elements for future quantum networks. Here, we report a storage efficiency greater than 28% in a Tm3+: YAG crystal in elevated temperatures and without compromising the memory bandwidth. Using various pumping and optimization techniques, we demonstrate multi-frequency window storage with a high memory bandwidth of 630 MHz. Moreover, we propose a general method for large-bandwidth atomic-frequency memory with non-Kramers rare-earth-ion (REI) in solids enabling significantly higher storage efficiency and bandwidth. Our study advances the practical applications of quantum memory devices based on REI-doped crystals. © 2024, CC BY.

关键词： Optical pumping

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EVALUATION OF THE METAL OXIDE SURGE ARRESTERS DEGRADATION BASED ON THE LOSS TANGENT 22

EVALUATION OF THE METAL OXIDE SURGE ARRESTERS DEGRADATION BA...

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22nd International Symposium on High Voltage engineering, ISH 2021

作者： Barbosa, Vandilson R.N. Costa, Edson G. Leite Neto, Antônio F. Carvalho, Itaiara F. Castro, Patrício F. Souza, João P.C. Melo, João V.J. Lira, George R.S. Electrical Engineering Graduate Program Campina Grande Brazil Department of Electrical Engineering Federal University of Campina Grande Campina Grande Brazil

ISBN: (纸本)9781839536052

Metal Oxide Surge Arresters (MOSAs) are equipment used to protect equipment of electrical Power Systems (EPSs). In this work, a technique is proposed to assess the level of MOSAs degradation based on the loss tangent calculation. The degradation of surge arresters, as well as other electrical equipment, can also be assessed by means of the loss tangent that varies with the voltage and the level of degradation. Thus, its value tends to increase according to the time of use of the equipment. A high value of the loss tangent is indicative of a failure. For the development of the proposed technique, tests in a high voltage laboratory were carried out in order to build a database. In these tests, different operating conditions were simulated to verify the behavior of the loss tangent curve, considering the surge arrester as being in good and defective condition. Based on the values obtained in the tests, it was observed that for each operational state of the evaluated components, different curves of the loss tangent were obtained, in addition to verifying that the more degraded the surge arrester is, the greater the value of the loss tangent. Thus, the loss tangent can be used to assess the operational condition of the MOSAs. © 2021 The Institution of engineering and Technology.

关键词： Metals

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