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Improved Metaheuristics with Deep Autoencoders for COVID-19 Detection and Classification 2

Improved Metaheuristics with Deep Autoencoders for COVID-19 ...

引用

2nd International Conference on Electrical, electronics, Information and Communication Technologies, ICEEICT 2023

作者： Assudani, Manish K Nirmala, B. Kanimozhi, N. Chandre, Shanker Sunalini, K.K. Gopatoti, Anandbabu G H Raisoni University Department of Computer Science and Engineering Maharashtra Amravati India Sri Ramachandra Institute of Higher Education and Research Sri Ramachandra Faculty of Engineering and Technology Department of Computer Science and Engineering Chennai India School of Computing SRM Institute of Science and Technology Department of Computational Intelligence Tamil Nadu Chennai India SR University Department of Computer Science & Artificial Intelligence Telangana Warangal India Koneru Lakshmaiah Education Foundation Department of English Andhrapradesh Guntur India Hindusthan College of Engineering and Technology Department of Electronics and Communication Engineering Tamil Nadu Coimbatore India

ISBN: (纸本)9798350397635

A healthcare monitoring system requires the support of current technologies like big data, artificial intelligence (AI), and machine learning (ML), particularly during the outbreak of COVID19. This pandemic caused millions of death worldwide. ML and AI are used to detect and combat COVID19 in the initial phase. Deep learning refers to a subdivision of ML that utilizes NN for making predictions and learning from data. In the context of COVID19 detection, deep learning (DL) methods can be trained for examining medical images like CT scans and chest X-rays and identify the presence of virus. This study presents an improved whale optimization algorithm with deep autoencoder (IWOA-DAE) algorithm for COVID-19 detection and classification. The presented IWOA-DAE technique makes use of DL model with metaheuristic hyperparameter optimizer for COVID-19 classification. To accomplish this, the IWOA-DAE technique employs bilateral filtering (BF) process to eliminate noisy data. Next, the IWOA-DAE technique uses NASNetLarge model for feature vector generation purposes. For COVID-19 detection, the IWOA-DAE technique uses deep autoencoder (DAE) model with IWOA based optimal hyperparameter adjustment process. To highlight the improved performance of the IWOA-DAE algorithm, a wide-ranging simulation analysis takes place. The simulation outcomes highlighted the enhanced performance of the IWOA-DAE technique over other methods. © 2023 IEEE.

关键词： COVID-19

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A Broadband High Gain Base Station Antenna 7

A Broadband High Gain Base Station Antenna

引用

7th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2024

作者： Ding, Xiao Feng, Botao Rao, Liwei Gu, Wenzhe Deng, Li Zeng, Qingsheng Macau University of Science and Technology Faculty of Humanities and Arts Macau999078 China Shenzhen University College of Electronics and Information Engineering Shenzhen518060 China Huizhou University School of Computer Science and Engineering Huizhou China Beijing University of Posts and Telecommunications College of Information and Communication Engineering Beijing China Nanjing University of Aeronautics and Astronautics College of Astronautics Nanjing210016 China

ISBN: (纸本)9798350384437

This paper suggests a base-station antenna unit designed for 2G/3G/LTE frequencies, featuring ±45° polarization, high gain, and low cross-polarization. The antenna is excited by two circular arc probes and uses two orthogonal rectangular ring dipoles to achieve a wider bandwidth. In order to achieve higher gain and better cross-polarization level, four parasitic elements are added around the dual dipole. The simulation results show that |S11|27 dB), higher gain (9.6±1.4 dBi), front-to-back ratio(>18 dB) and a beamwidth of 57.5±7.5° in the desired bandwidth range. The antenna can be used in the broadband base station of the communication system. © 2024 IEEE.

关键词： Bandwidth

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Characterization and Control of a Superconducting Homopolar Motor with Cryogenic GaN Inverter for Electric Aircrafts

Characterization and Control of a Superconducting Homopolar ...

引用

2024 IEEE Energy Conversion Congress and Exposition, ECCE 2024

作者： Gliese, Felix Pearce, Matthew G. S. Wadsworth, Aaron Siamaki, Mohammad Storey, James Lumsden, Grant Thrimawithana, Duleepa J. Badcock, Rod Roth-Stielow, Joerg Neuburger, Martin Esslingen University Faculty of Mobility and Technology Germany The University of Auckland Dept. of Electrical Computer and Software Engineering New Zealand OpenStar Technologies New Zealand Victoria University of Wellington Robinson Research Institute New Zealand University of Stuttgart Institute for Power Electronics and Electrical Drives Germany

ISBN: (纸本)9798350376067

In the quest for a zero-emissions future, the aviation sector is facing the challenge of reducing its carbon footprint. This paper presents a characterization of a superconducting homopolar motor designed to meet the stringent power and efficiency requirements of all-electric aircraft. The control system, which features field-oriented control and a multi-layer architecture, ensures precise operation of the motor under various load conditions. The motor uses a stationary cryogenic superconducting DC coil to generate the rotor's magnetic field. Utilizing superconducting materials helps produce the high power densities critical for aviation. The characterization of the key parameters of the motor, such as inductances, stator resistance and flux, are presented. A description of the cryogenic GaN power electronic inverter power stage immersed in liquid nitrogen is provided. This design enables future integration next to the motor, and improved power density and efficiency. This paper outlines the design, implementation, and initial testing of the superconducting homopolar motor and its power electronics, highlighting its potential for electric propulsion in aviation by providing a viable solution for long-range flights. © 2024 IEEE.

关键词： Gallium nitride

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A Polarization Reconfigurable Magneto-Electric Dipole Antenna for 2.2-2.7 GHz Band 7

A Polarization Reconfigurable Magneto-Electric Dipole Antenn...

引用

7th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2024

作者： Zhou, Xuhang Feng, Botao Ding, Xiao Deng, Li Gu, Wenzhe Zeng, Qingsheng Shenzhen University College of Electronics and Information Engineering Shenzhen518060 China Macau University of Science and Technology Faculty of Humanities and Arts Macau999078 China Beijing University of Posts and Telecommunications College of Information and Communication Engineering Beijing China Huizhou University School of Computer Science and Engineering Huizhou516007 China Nanjing University of Aeronautics and Astronautics College of Astronautics Nanjing210016 China

ISBN: (纸本)9798350384437

In this article, a polarization-reconfigurable antenna based on magneto-electric (ME) dipoles is proposed. This antenna has three polarized states: linear polarization (LP), right-hand circular polarization (RHCP), and left-hand circular polarization (LHCP), which are mainly achieved through the cross strips with a bridge structure on top of the ME dipole. By changing the on/off states of diodes D1 and D2, the connections of the cross strips can be altered, thereby changing the surface current on the horizontal patches to achieve polarization reconfiguration. The proposed antenna is fed through a microstrip line and an H-shaped slot. The selected operating frequency band is 2.2-2.7 GHz. In all states, the bandwidth and 3-dB axial ratio bandwidth cover the operating band, and the gain is greater than 7 dBi within the operating band. This indicates that the antenna achieves polarization reconfiguration while maintaining good overall performance. Moreover, the reconfiguration method using diodes is easy to manufacture, making its application in wireless communication systems feasible. © 2024 IEEE.

关键词： Bandwidth

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Closing Time Analysis of Electromagnetic Relay in Real Time Gas HV Circuit Breaker Simulator

Closing Time Analysis of Electromagnetic Relay in Real Time ...

引用

13th International Electrical engineering Congress, iEECON 2025

作者： Kaewnet, Witoon Chompusri, Yotaka Charbkaew, Noppadol King Mongkut's University of Technology North Bangkok Faculty of Engineering Department of Electrical and Computer Engineering Bangkok Thailand King Mongkut's University of Technology North Bangkok Department of Instrumentation and Electronics Engineering Bangkok Thailand

ISBN: (纸本)9798331543952

Developing process of Point-on-Wave Switching Controller, capacitor bank switching is required for testing. While a Real-time simulator is another option for testing, its high cost can be a significant drawback. Therefore, employing a low voltage analog model with real-time circuit breaker simulator becomes a more economical choice. Real-time circuit breaker simulator, which is based on a low-cost microprocessor, can replicate high voltage characteristics, such as gas insulator breakdown and the rate of decrease of dielectric strength (RDDS). To function effectively, this circuit breaker simulator requires a fast-closing, high precision, and low uncertainty switching device. Electromagnetic relays are one potential option for the switching device. As a result, many relays are tested under various closing time conditions, including the first operation after a long idle period and after numerous operational cycles. © 2025 IEEE.

关键词： Electric relays

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Closing Time Analysis of Electromagnetic Relay in Real Time Gas HV Circuit Breaker Simulator

Closing Time Analysis of Electromagnetic Relay in Real Time ...

引用

International Electrical engineering Congress (iEECON)

作者： Witoon Kaewnet Yotaka Chompusri Noppadol Charbkaew Department of Electrical and Computer Engineering Faculty of Engineering King Mongkut’s University of Technology North Bangkok Bangkok Thailand Department of Instrumentation and Electronics Engineering King Mongkut’s University of Technology North Bangkok Bangkok Thailand

ISBN: (数字)9798331543952

ISBN: (纸本)9798331543969

关键词： Circuit breakers Switches Control systems Real-time systems Timing Relays Electromagnetics Integrated circuit modeling Switching circuits Testing

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A Design of High-Gain, Polarimetric Conversion Reflection Filter Array 7

A Design of High-Gain, Polarimetric Conversion Reflection Fi...

引用

7th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2024

作者： Rao, Liwei Feng, Botao Ding, Xiao Gu, Wenzhe Deng, Li Zeng, Qingsheng Shenzhen University College of Electronics and Information Engineering Shenzhen518060 China Macau University of Science and Technology Faculty of Humanities and Arts Macau999078 China Huizhou University School of Computer Science and Engineering Huizhou China Beijing University of Posts and Telecommunications College of Information and Communication Engineering Beijing China Nanjing University of Aeronautics and Astronautics College of Astronautics Nanjing210016 China

ISBN: (纸本)9798350384437

An "I"-shaped polarization conversion unit was developed in this study, capable of functioning at a frequency of 12 GHz. The design involved rotating metal patches on the unit by 90 degrees, resulting in an alternative unit with the same reflection coefficient and a phase difference of 180°. The final step involved incorporating choke rings around the "I"-shape to provide filtering functionality. Based on this, a high-gain filtering reflective array consisting of 20×20 proposed antenna unit was constructed. At 12 GHz, the attained gain was 24.7 dBi, and the radiation patterns for both H-plane and V-plane are demonstrated to be stable enough. © 2024 IEEE.

关键词： Polarization

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Real-time Monitoring of Women's Safety Through Bluetooth Low Energy and iBeacons 2

Real-time Monitoring of Women's Safety Through Bluetooth Low...

引用

2nd International Conference on Smart Technologies for Smart Nation, SmartTechCon 2023

作者： Vivek Sharma, S. Ranganathan, Chitra Sabapathy Elavel Visuvanathan, G. Srinivasan, S. Latha, N. School of Computer Science and Engineering REVA University Karnataka Bangalore India Mphasis Corporation ChandlerAZ United States Department of Electronics and Communication Engineering Faculty of Engineering and Technology SRM Institute of Science and Technology Tamil Nadu Kattankulathur India Department of Biomedical Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Tamil Nadu Chennai India Department of Computer Science and Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Saveetha University Tamil Nadu Chennai India

ISBN: (纸本)9798350305418

This paper presents real-time monitoring of women's safety, which uses Bluetooth Low Energy (BLE) and iBeacons to provide real-time tracking. Data on the iBeacons' Received Signal Strength Indicator (RSSI) is gathered from BLE-enabled calibration devices. Users' real RSSIs are estimated using the refined least squares estimation method. The predicted RSSI data are used with the Android Application Package (APK) to transmit the precise GPS coordinates of the mobile device to the server. When combined with the APK, the proposed tracking method provides accurate data regarding device position and iBeacon distance. In addition, Google Maps can be incorporated with the system for even more precise real-time monitoring. This system can follow a destination in real time, identify its location, and work with various desktop and mobile platforms. While initially designed to improve women's safety, it can be easily adapted to monitor people's location in multiple settings. Accurate tracking and distance estimates are achieved by integrating wearable BLE-enabled devices, mobile phones, server connectivity, and exact RSSI measurement. Google Maps' incorporation into real-time surveillance enhances women's and other people's safety and security. © 2023 IEEE.

关键词： Bluetooth Low Energy iBeacons Real-time tracking server communication women's safety

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A Reconfigurable Reflectarray Antenna at X-band 7

A Reconfigurable Reflectarray Antenna at X-band

引用

7th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2024

作者： Du, Lin Feng, Botao Ding, Xiao Deng, Li Gu, Wenzhe Zeng, Qingsheng Shenzhen University College of Electronics and Information Engineering Shenzhen518060 China Macau University of Science and Technology Faculty of Humanities and Arts Macau999078 China Beijing University of Posts and Telecommunications College of Information and Communication Engineering Beijing China Huizhou University School of Computer Science and Engineering Huizhou516007 China Nanjing University of Aeronautics and Astronautics College of Astronautics Nanjing210016 China

ISBN: (纸本)9798350384437

In this paper, an electronically reconfigurable reflectarray antenna (RRA) that operates in X-band is developed and simulated. Two P-I-N diodes are integrated in each element to obtain 1-bit phase compensation. The proposed element offers a stable angular response and polarization rotation in X-band. The element is applied to a 19×19 RRA for achieving beam scanning. The simulated result of the proposed RRA shows that the proposed RRA can achievea beam scanning ranging from -30° to 30° and a peak gain of 18.12 dBi. © 2024 IEEE.

关键词： Reflection

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A Broadband Array Antenna Based on E-Shaped Folded Strip Elements for Millimeter-Wave N259/N260 Applications 7

A Broadband Array Antenna Based on E-Shaped Folded Strip Ele...

引用

7th IEEE International Conference on Electronic Information and Communication technology, ICEICT 2024

作者： Wu, Xi Feng, Botao Ding, Xiao Gu, Wenzhe Deng, Li Zeng, Qingsheng Shenzhen University College of Electronics and Information Engineering Shenzhen518060 China Macau University of Science and Technology Faculty of Humanities and Arts Macau999078 China Huizhou University School of Computer Science and Engineering Huizhou516007 China Beijing University of Posts and Telecommunications College of Information and Communication Engineering Beijing China Nanjing University of Aeronautics and Astronautics College of Astronautics Nanjing210016 China

ISBN: (纸本)9798350384437

A low-profile, wideband linearly-polarization array antenna based on broadband E-shaped folded strip elements is proposed. The antenna unit consists of a 2×2 array of E-shaped folded strip elements and four metalized through-holes. The microstrip line, located on the underside of an extremely thin dielectric substrate, utilizes a cross-shaped slot for its coupled feeding mechanism. This configuration markedly enhances the compatibility with circuits at millimeter-wave frequencies and also offers the advantage of a low-profile design. The simulated performance of the antenna module shows an impedance bandwidth covering 71%, extending from 21.43 GHz to 45 GHz, along with a peak gain of 5.925 dBi. Moreover, it maintains a cross-polarization discrimination level that is greater than 25 dB. To demonstrate the wideband and high-gain characteristics, a 2 × 2 array of linearly polarized antennas has been crafted, featuring a straightforward microstrip feed system and eliminating the necessity for an extra enclosure made of dielectric material. The simulated data reveal commendable characteristics regarding impedance correlation, gain, and the patterns of radiation, rendering the array well-suited for deployment in millimeter-wave applications designated as N259 and N260. © 2024 IEEE.

关键词： Millimeter waves

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