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Computational Intelligence Approaches and Applications (ICCIAA), International Conference on

作者： Hazem Alnajjar Nadia Al-Rousan Douaa Al-Rouan Department of Computer Science College of Information Technology University of Petra Amman Jordan Department of computer engineering College of Engineering AlBalqa Applied University Salt Jordan Department of Computer Engineering Faculty of Electrical Engineering and Information Systems German Jordanian University Amman Jordan School of Civil Engineering Universiti Sains Malaysia Nibong Tebal Pulau Pinang MALAYSIA

ISBN: (数字)9798331523657

ISBN: (纸本)9798331523664

This study aims to combine optimization algorithms of feature selection and machine learning models for DO prediction at a water monitoring station. The dataset consisted of water quality indicators from three stations, whose DO was the target variable at the third station. This study used seven optimization algorithms to select the most relevant features. The selected features were then used along with ten machine-learning models for building predictive models. Several models were evaluated based on R 2 , MAE, and MSE metrics. Hence, Gradient Boosting and Random Forest models yielded better prediction results. The results showed high accuracy, reflected by the values of R 2 , which were 0.987 and 0.922 for the training data and 0.769 and 0.745 for the test data, respectively. The findings underscore the effectiveness of combining feature selection with optimized machine learning models for accurate DO prediction, which is essential for monitoring water quality.

关键词： Machine learning algorithms Biological system modeling Water quality Predictive models Prediction algorithms Feature extraction Rivers Water monitoring Optimization Random forests

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Efficient Usage of Energy in 5G toward Sustainable Development inclined to Industry 4.0 Connectivity

Efficient Usage of Energy in 5G toward Sustainable Developme...

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2022 IEEE Region 10 Symposium, TENSYMP 2022

作者： Pradhan, Devasis Tun, Hla Myo Wah, Naw Khu Say Oo, Thandar Priyanka, K.C. Dash, Ajit Acharya Institute of Technology Department of Electronics & Communication Engineering Bangalore India Yangon Technical University Faculty of Computer & Electrical Engineering Yangon Myanmar Bijiu Pattnaik University of Technology Global Research Consultant Bhubaneswar India

ISBN: (数字)9781665466585

ISBN: (纸本)9781665466585

As traffic requests keep on flooding, conveying 5G similarly as its past ages become dynamically far-fetched. In addition to the fact that it would mean a sensational expansion in energy utilization of portable organizations, it would likewise contrarily affect the climate. An imaginative and feasible methodology is expected to break the energy bend. With the appearance of the fifth era of wireless networks, with a huge number of more base stations and billions of associated gadgets, the requirement for an energy-productive framework plan and activity will be significantly really convincing. With the revolution of Industry 4.0 systems rely on antenna technology to connect various sensors and actuators which enables the higher mobility of robots and drones through wireless communication. © 2022 IEEE.

关键词： Smart power grids

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Modifying Quasi Z-Source Network for an Innovative Extendable Switched-Capacitor Boost Multilevel Inverter Topology

Modifying Quasi Z-Source Network for an Innovative Extendabl...

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Green Energy, Computing and Sustainable Technology (GECOST), International Conference on

作者： Yew Wei Sia Kah Haw Law Garenth King Hann Lim Sy Yi SIM Kenneth Siok Kiam Yeo Department of Electrical and Computer Engineering Curtin University Malaysia Sarawak Malaysia Electrical and Electronic Engineering Programme Area Universiti Teknologi Brunei Bandar Seri Begawan Brunei Faculty of Engineering Technology University Tun Hussein Onn Malaysia Batu Pahat Johor Malaysia

The emergence of Hybrid Multilevel Inverters (HMLIs) represents a significant advancement in addressing the limitations of traditional multilevel inverter (MLI) topologies. In recent years, various concepts and topologies have been proposed to enhance HMLIs, with a primary focus on generating a greater number of AC voltage levels while minimizing component count and utilizing isolated DC sources. Traditionally, these HMLI topologies required two-stage configurations involving DC-to-DC converters, leading to increased costs and complexity. This paper highlights the transition to single-stage DC-AC inverters, which offers substantial benefits, including high boost gain, superior conversion efficiency, and a reduced reliance on passive components. Furthermore, the paper introduces a groundbreaking solution - a 57-level switched-capacitor boost multilevel inverter (SCBMLI), derived from the quasi z-source inverter (qZSI). The proposed SCBMLI offers a multitude of advantages, including the generation of high voltage levels, balancing the voltage of capacitor in the circuit without the need for any control system, and achieving low Total Harmonic Distortion (THD) in high voltage applications.

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Dc Leakage Current in Isolated Grid-Connected dc Nanogrid - Origins and Elimination Methods

Dc Leakage Current in Isolated Grid-Connected dc Nanogrid - ...

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Compatibility in Power Electronics (CPE)

作者： Mohammadreza Azizi Oleksandr Husev Oleksandr Veligorskyi Marek Turzvński Ryszard Strzelecki Department of Radiotechnic and Embedded Systems Chernihiv Polytechnic National University Chernihiv Ukraine Department of Electric Electronic and Automation Engineering University of Extremadura Badajoz Spain Department of Electrical Power Engineering and Mechatronics Tallinn University of Technology Tallinn Estonia Faculty of Electrical and Control Engineering Gdansk University of Technology Gdansk Poland

ISBN: (数字)9798350318265

ISBN: (纸本)9798350318272

The LV dc system is a relatively new trend in the distribution sector, which seems to grow widely in the near future due to its promising advantages. In this context, LV dc protection and grounding are challenging issues. Although the galvanically isolated connection mode of dc nanogrid to the ac grid has high reliability, the leakage current can still be injected into the ac grid through the interwinding capacitors and the insulation resistance between the primary and secondary windings of the transformer. The way of grounding the dc nanogrid can also be a determining factor in the leakage current and its dc components. This study deals with the leakage current in the galvanically isolated dc nanogrid. Then, it examines the dc leakage current and its relationship with the dc nanogrid grounding and finally provides solutions to remove the dc components in the leakage current.

关键词： Resistance Insulation Grounding Simulation Windings Capacitors Leakage currents

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Enhancing the detection capabilities of nano-avalanches via data-driven classification of acoustic emission signals

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Physical Review E 2023年第4期108卷 045001-045001页

作者： Emil Bronstein Jonathan Zimmerman Eugen Rabkin Eilon Faran Ronen Talmon Doron Shilo Faculty of Mechanical Engineering Technion–Israel Institute of Technology 3200003 Haifa Israel Department of Materials Science and Engineering Technion–Israel Institute of Technology 3200003 Haifa Israel Viterbi Faculty of Electrical and Computer Engineering Technion–Israel Institute of Technology 3200003 Haifa Israel

Acoustic emission (AE) is a powerful experimental method for studying discrete and impulsive events termed avalanches that occur in a wide variety of materials and physical phenomena. A particular challenge is the detection of small-scale avalanches, whose associated acoustic signals are at the noise level of the experimental setup. The conventional detection approach is based on setting a threshold significantly larger than this level, ignoring “false” events with low AE amplitudes that originate from noise. At the same time, this approach overlooks small-scale events that might be true and impedes the investigation of avalanches occurring at the nanoscale, constituting the natural response of many nanoparticles and nanostructured materials. In this work, we develop a data-driven method that allows the detection of small-scale AE events, which is based on two propositions. The first includes a modification of the experimental conditions by setting a lower threshold compared to the conventional threshold, such that an abundance of small-scale events with low amplitudes are considered. Second, instead of analyzing several conventional scalar features (e.g., amplitude, duration, energy), we consider the entire waveform of each AE event and obtain an informative representation using dynamic mode decomposition. We apply the developed method to AE signals measured during the compression of platinum nanoparticles and demonstrate a significant enhancement of the detection range toward small-scale events that are below the conventional threshold.

关键词： Acoustic measurements Acoustic signal processing & noise Disclinations & dislocations Plasticity Nanoparticles Acoustic techniques

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Inculcation of Sensors in Enhancing Smart Cities: A Review

Inculcation of Sensors in Enhancing Smart Cities: A Review

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International Conference on Power Energy, Environment and Intelligent control (PEEIC)

作者： Trupti V Nandikolmath Sandeep Kumar Jain Savita Yadav Department of Electrical and Electronics Engineering Faculty of Engineering and Technology JAIN (Deemed to be University) Bangalore India Department of Electrical Engineering Vivekananda Global University Jaipur India Department of Computer Science and Engineering (lOT) Noida Institute of Engineering & Technology Greater Noida Uttar Pradesh India

By 2050, experts predict that 75% of people on Earth will live in cities. As such, cities need to be prepared to fulfill the needs of their citizens and provide the best possible services. The idea of a “smart city,” which is an improved system that effectively manages its resources and services via monitoring and communication technology, is often central to the notion of an advanced city. Thus, turning cities into smart entities is a critical step toward global urban sustainability. Beyond creating smart buildings in cities, the main goal is to improve people's quality of life by using newly developed digital technologies and sensing capabilities. The key to smarter communities is their capacity to invest in these technologies, adapt, and socialize in a transparent and inclusive manner while taking into account the needs and values of the local and regional communities. Despite these developments, privacy issues and interruptions in cyber security remain serious weaknesses that need addressed.

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Modulation and Estimation with a Helper

arXiv

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arXiv 2023年

作者： Khina, Anatoly Merhav, Neri The Department of Electrical Engineering–Systems Tel Aviv University Tel Aviv6997801 Israel The Viterby Faculty of Electrical and Computer Engineering Technion–Israel Institute of Technology Haifa3200004 Israel

The problem of transmitting a parameter value over an additive white Gaussian noise (AWGN) channel is considered, where, in addition to the transmitter and the receiver, there is a helper that observes the noise non-causally and provides a description of limited rate Rh to the transmitter and/or the receiver. We derive upper and lower bounds on the optimal achievable α-th moment of the estimation error and show that they coincide for small values of α and for high values of Rh. The upper bound relies on a recently proposed channel-coding scheme that effectively conveys Rh bits essentially error-free and the rest of the rate—over the same AWGN channel without help, with the error-free bits being allocated to the most significant bits of the quantized parameter. We then concentrate on the setting with a total transmit energy constraint, for which we derive achievability results for both channel coding and parameter modulation for several scenarios: when the helper assists only the transmitter or only the receiver and knows the noise, and when the helper assists the transmitter and/or the receiver and knows both the noise and the message. In particular, for the message-informed helper that assists both the receiver and the transmitter, it is shown that the error probability in the channel-coding task decays doubly exponentially. Finally, we translate these results to those for continuous-time power-limited AWGN channels with unconstrained bandwidth. As a byproduct, we show that the capacity with a message-informed helper that is available only at the transmitter can exceed the sum of the capacity without help and the help rate Rh, when the helper knows only the noise but not the message. © 2023, CC BY-SA.

关键词： Transmitters

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Negative Coupling Realized by Groove Gap Waveguide (GGW) and its Application for a CQ Waveguide Filter

Negative Coupling Realized by Groove Gap Waveguide (GGW) and...

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IEEE International Workshop on Radio-Frequency Integration Technology (RFIT)

作者： Weijun Li Zai-Cheng Guo Lei Zhu Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing School of Electrical and Automation Engineering Nanjing Normal University Nanjing Department of Electrical and Computer Engineering Faculty of Science and Technology University of Macau Macau SAR China

ISBN: (数字)9798331541095

ISBN: (纸本)9798331541101

Negative coupling is widely used in microwave filter design, especially for filters with finite transmission zeros (TZs). Conventionally, negative coupling is physically realized by capacitive irises or electrical probes. When negative coupling is small, the capacitive iris size usually becomes very small or the electrical probes need to be carefully placed, the manufacturing and tuning of filters, as a consequence, is of great challenge. In this paper, a coupling structure based on groove gap waveguide (GGW) is proposed to implement negative coupling and applied to a cascaded quadruplet (CQ) waveguide filter. The simulated and measured results demonstrate that the GGW coupling structure can perfectly replace the capacitive iris to implement the desirable negative coupling while favorably easing manufacturing difficulties caused by small negative couplings and lowering sensitivity to manufacturing tolerance for waveguide filters.

关键词： Couplings Band-pass filters Iris Sensitivity Gap waveguide Waveguide discontinuities Manufacturing Microwave filters Probes Tuning

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Lyapunov-Function Based control Technique for a Single-Phase Grid-Connected Five-Level Active Neutral Point Clamped Flying Capacitor Inverter with LCL Filter 17

Lyapunov-Function Based Control Technique for a Single-Phase...

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17th IEEE International Conference on Compatibility, Power Electronics and Power engineering, CPE-POWERENG 2023

作者： Fesli, Ugur Bayhan, Sertac Guler, Naki Komurcugil, Hasan Gazi University Technical Sciences Vocational School Electronic and Automation Department Ankara Turkey Hamad Bin Khalifa University Qatar Environment and Energy Research Institute Doha Qatar Technology Faculty Gazi University Department of Electrical-Electronic Engineering Ankara Turkey Eastern Mediterranean University Department of Computer Engineering Via Mersin 10 Famagusta Turkey

ISBN: (纸本)9798350300048

This paper presents Lyapunov-function based control technique for a grid-connected five-level active neutral point clamped flying capacitor (ANPC-FC) inverter with LCL filter. The control technique used in this study ensures global stability of the closed-loop system and almost zero steady-state error in the grid current. A proportional resonant (PR) controller is also employed in the control scheme to generate the required reference value for the inverter current. In addition, a simple phase shift pulse width modulation (PSPWM) technique is used for resolving voltage imbalances between dc-link capacitors and floating capacitors without the use of complicated circuitry or sensors. Simulation results validate the performance of the proposed system. Studies conducted at steady state and in dynamic mode demonstrate excellent results. © 2023 IEEE.

关键词： Lyapunov functions

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Low-Resolution Face Recognition for CCTV and Edge-Powered Smart Attendance Systems

Low-Resolution Face Recognition for CCTV and Edge-Powered Sm...

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IEEE Annual International computer Software and Applications Conference (COMPSAC)

作者： Nico Surantha Edward Yose Sani Muhamad Isa Department of Electrical Electronics and Communication Engineering Faculty of Science and Engineering Tokyo City University Tokyo Japan Computer Science Department BINUS Graduate Program-Master of Computer Science Bina Nusantara University Jakarta Indonesia

ISBN: (数字)9798350376968

ISBN: (纸本)9798350376975

Attendance systems have become more modern, and one of the biometric systems without physical contact is face recognition. However, many face-based attendance systems still carry out attendance individually and cannot detect multiple faces simultaneously. In addition, capturing facial data in real-time is still a challenge because the relatively large distance between the camera and the individual reduces the ability to recognize faces. The general solution is to use super-resolution to generate better-quality faces while maintaining the main facial recognition features. One technique still being researched is super-resolution generative adversarial networks (SRGAN). SRGAN can enlarge the resolution of captured images and maintain image quality sufficient for face recognition. The attendance system can be easily integrated into edge devices such as the Jetson Nano. This paper proposes automatic and effective attendance systems with the super-resolution technique to detect and recognize faces in low-resolution input. The experimental results show that using face data capture with a resolution of 40 × 40 pixels and a four-fold magnification results in a resolution of 160 × 160 pixels. Combining Face SRGAN with FaceNet architecture as the basis of face recognition can achieve an accuracy rate of 78.19% and an F1-Score of 81.13% with an average processing time of 1.61 seconds per frame on a PC and 14.55 seconds per frame on a Jetson Nano at an average of face recognition per frame of as many as up to 8 faces simultaneously.

关键词： Support vector machines Image quality Accuracy Face recognition Image edge detection Superresolution Generative adversarial networks

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