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Effects of silver diffusement on TiO2-B2O3 nanocomposite sensor towards hydrogen sensing

Materials Research Innovations 2024年第5期28卷 365-378页

作者： Mohd Chachuli, Siti Amaniah Hamidon, Mohd Nizar Ertugurl, Mehmet Mamat, Md. Shuhazlly Coban, Omer Shamsudin, N.H. Arith, Faiz Faculty of Electronics and Computer Technology and Engineering Universiti Teknikal Malaysia Melaka Hang Tuah Jaya Melaka Malaysia Institute of Nanoscience and Nanotechnology Universiti Putra Malaysia Selangor Serdang Malaysia Engineering Faculty Ataturk University Erzurum Turkey Faculty of Sciences Universiti Putra Malaysia Selangor Serdang Malaysia Faculty of Electrical Technology and Engineering Universiti Teknikal Malaysia Melaka Hang Tuah Jaya Melaka Malaysia

Various finger dimensions of interdigitated electrodes in TiO2-B2O3 nanocomposite sensors were proposed in this study. To study the silver diffusement effect on the hydrogen sensing characteristics at different operating temperatures. The result showed that some of the silver particles diffused to the surface of the TiO2-B2O3 nanocomposite sensor after the annealing process at 500°C. The amount of silver particles diffused into the TiO2-B2O3 surface was contributed by the finger dimension of the interdigitated electrode used in the nanocomposite sensor. The results revealed that the structure of interdigitated electrodes in T65 nanocomposite sensor enhanced the performance at low hydrogen concentrations with response values were approximately 4.78, 11.47, 14.47, 16.58, and 20.00 for 100 ppm, 300 ppm, 500 ppm, 700 ppm, and 1000 ppm, respectively, at the optimum operating temperature of 200°C. The activation energy for all nanocomposite sensors was approximately in the range of 40–70 kJ/mol. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Titanium dioxide

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Fault simulation Framework using PyUVM

Fault simulation Framework using PyUVM

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2023 International Conference on Microelectronics, ICM 2023

作者： Fayez, Mina Hanna Eladawy, Mohamed Ahmed Sahyon, Micheal Safwat Ahmed, Islam Osama El-Din, Omar Hossam Elshafie, Mohamed Ahmed Taha, Mohamed Ayman Talaat, Mohamed Gamal Cairo University Faculty of Engineering Electronics and Communications Department Cairo Egypt Ain Shams University Faculty of Engineering Computer Department Cairo Egypt

ISBN: (纸本)9798350380828

This paper presents a fault simulation environment developed using PyUVM to address challenges in simulating faults during the manufacturing process of integrated circuits (ICs). The two main challenges tackled are simulating pre-manufacturing fault behavior and overcoming performance issues. The contributions of this work include expanding the fault simulation capacity beyond existing fault simulation methodologies, improving simulation time through efficient algorithms, and enabling compatibility with Universal Verification Methodology (UVM) and SystemVerilog testbenches. The environment allows for injecting various types of faults into a design, reporting the resulting behavior, and facilitating comprehensive analysis under different fault scenarios. The proposed solution enhances fault simulation capabilities, reduces simulation time, and provides compatibility for seamless integration with existing designs and verification methodologies. © 2023 IEEE.

关键词： Integrated circuits

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Application of Networked Microgrids for Distribution System Restoration After Natural Disasters 16

Application of Networked Microgrids for Distribution System ...

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16th IEEE AFRICON, AFRICON 2023

作者： Ghobadi, Mahtab Kenari, Meghdad Tourandaz Sepasian, Mohammad Sadegh Ozdemir, Aydogan Shahid Beheshti University Faculty of Electrical and Computer Engineering Tehran Iran Istanbul Technical University Faculty of Electrical and Electronics Engineering Istanbul Turkey

ISBN: (纸本)9798350336214

Due to the significant economic and technical damage caused by natural disasters, there has been a recent focus on resilience studies for distribution systems (DSs) after such events. This paper suggests a two-stage hierarchical approach using networked microgrids (NMGs) to minimize the value of lost loads (VoLLs) in the DS following a natural disaster. The first stage considers the energy generation limit of generating units in post-incident conditions when scheduling microgrids and DS. In the second stage, network reconfiguration and unit rescheduling are employed to reduce the VoLL in the entire network while maintaining the independent goals of each microgrid. The modified IEEE 123-bus test system is used to demonstrate the effectiveness of this approach, which effectively reduces the VoLL in the entire network while preserving the independent goals of each microgrid. © 2023 IEEE.

关键词： Electric power distribution

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AI-Enabled Smart Hybrid Energy Optimization Management System for Green Hydrogen-Based Islanded Microgrids 6

AI-Enabled Smart Hybrid Energy Optimization Management Syste...

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6th IEEE Novel Intelligent and Leading Emerging Sciences Conference, NILES 2024

作者： Mohamed, Noor El-Deen M. El Zoghby, Helmy M. Abdelhakam, Mostafa M. Elmesalawy, Mahmoud M. Helwan University Faculty of Engineering Computer and Systems Engineering Department Cairo Egypt Helwan University Department of Electrical Power and Machines Engineering Cairo Egypt Helwan University Faculty of Engineering Electronics and Communications Engineering Department Cairo Egypt

ISBN: (纸本)9798350378511

Renewable hybrid energy systems are crucial for ensuring energy sustainability. This work presents an advanced control and management system for green hydrogen production, leveraging artificial intelligence (AI) and Internet of Things (IoT) technologies. The system optimizes renewable energy utilization, improves hydrogen production efficiency, and ensures a reliable energy supply to meet varying demands. AI algorithms are used, including Random Forest, Artificial Neural Networks (ANN) and Long Short-Term Memory (LSTM) networks to forecast photovoltaic (PV) energy production and load consumption. These models are integrated into a centralized control system that dynamically adjusts energy distribution between immediate consumption and hydrogen production. Using data from the Rye microgrid, the system's effectiveness is demonstrated in enhancing decision-making for energy management in small-scale islanded operations. © 2024 IEEE.

关键词： Clean energy

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Improved Quasi-Random Designs with Constant Pool Sizes for Group Testing 18

Improved Quasi-Random Designs with Constant Pool Sizes for G...

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18th International Symposium on Information Theory and Its Applications, ISITA 2024

作者： Hamada, Ryouji Lu, Xiao-Nan Graduate School of Informatics and Engineering The University of Electro-Communications Department of Computer and Network Engineering Chofu-shi Tokyo Japan Gifu University Faculty of Engineering Department of Electrical Electronics and Computer Engineering Gifu-shi Gifu Japan

ISBN: (纸本)9784885523519

Group testing is a well-studied approach for identifying defective items among a large amount of items by conducting a relatively small number of tests on pools of items. In this paper, we propose a novel method for generating quasi-random designs with constant pool sizes for noiseless non-adaptive group testing. Our approach incorporates insights from combinatorial properties to optimize the distribution of Hamming distances in pooling designs. Simulations with established practical decoding algorithms show that our quasi-random designs outperform existing random and quasi-random methods in both identification accuracy and stability. These improved designs have the potential to provide significant benefits for real-world applications of group testing, such as PCR testing in large populations and network security. © 2024 The Institute of electronics, Information and Communication Engineers.

关键词： Hamming distance

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Beyond Precision and Recall: Measuring Search Engine Consistency Using Rank Stability

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IEEE Access 2025年 13卷 92242-92259页

作者： Lakshmi, S. Thinakaran, Rajermani Batri, Krishnan Sowrirajan, R. Murugan, Sivaram Jain University Department of Electronics and Communication Engineering Karnataka Bengaluru India INTI International University Faculty of Data Science and Information Technology Negeri Sembilan Malaysia Jain University School of Computer Science and Engineering Karnataka Bengaluru India Dr. N.G.P. Arts and Science College Department of Mathematics Tamil Nadu Coimbatore India Sivas University of Science and Technology Faculty of Engineering and Natural Sciences Department of Computer Engineering Sivas58000 Turkey

Traditional information retrieval metrics such as precision, recall, and F-measure assess document relevance but fail to capture the stability of search rankings. Search engines frequently update their algorithms, leading to variations in retrieved documents and their rankings across identical queries. This study introduces a novel rank correlation measure that quantifies search result consistency by analyzing rank fluctuations in repeated queries, serving as a proxy for temporally separated searches. The proposed approach distinguishes between overlapping and non-overlapping documents, providing a detailed measure of ranking stability. Empirical evaluations comparing Google and Bing reveal that Google exhibits greater rank fluctuations for non-overlapping documents, whereas both search engines maintain relatively stable rankings for overlapping documents. These findings highlight the importance of rank-based evaluation frameworks in search engine analysis, extending beyond conventional retrieval metrics. By incorporating stability assessments, this research enhances the methodology for evaluating search consistency in dynamic web environments, contributing to process innovation in information retrieval (SDG 9: Industry, Innovation, and Infrastructure) and promoting fair, reliable access to information (SDG 16: Peace, Justice, and Strong Institutions). © 2013 IEEE.

关键词： Online searching

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Optical Ciphering Scheme for Cancellable Speaker Identification System

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computer Systems Science & engineering 2023年第4期45卷 563-578页

作者： Walid El-Shafai Marwa A.Elsayed Mohsen A.Rashwan Moawad I.Dessouky Adel S.El-Fishawy Naglaa F.Soliman Amel A.Alhussan Fathi EAbd El-Samie Department of Electronics and Electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Security Engineering Laboratory Department of Computer SciencePrince Sultan UniversityRiyadh11586Saudi Arabia Department of Electronics and Communications Faculty of EngineeringCairo UniversityCairoEgypt Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11671Saudi Arabia Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadhSaudi Arabia

Most current security and authentication systems are based on personal *** security problem is a major issue in the field of biometric *** is due to the use in databases of the original *** biometrics will forever be lost if these databases are *** privacy is the most important goal of cancelable *** order to protect privacy,therefore,cancelable biometrics should be non-invertible in such a way that no information can be inverted from the cancelable biometric templates stored in personal identification/verification *** methodology to achieve non-invertibility is the employment of non-invertible *** work suggests an encryption process for cancellable speaker identification using a hybrid encryption *** system includes the 3D Jigsaw transforms and Fractional Fourier Transform(FrFT).The proposed scheme is compared with the optical Double Random Phase Encoding(DRPE)encryption *** evaluation of simulation results of cancellable biometrics shows that the algorithm proposed is secure,authoritative,and *** encryption and cancelability effects are good and reveal good ***,it introduces recommended security and robustness levels for its utilization for achieving efficient cancellable biometrics systems.

关键词： Cancellable biometrics jigsaw transform FrFT DRPE speaker identification

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Proposed 3D chaos-based medical image cryptosystem for secure cloud-IoMT eHealth communication services

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Journal of Ambient Intelligence and Humanized Computing 2024年第1期15卷 1-28页

作者： El-Shafai, Walid Khallaf, Fatma El-Rabaie, El-Sayed M. El-Samie, Fathi E. Abd Department of Electronics and Electrical Communications Engineering Faculty of Electronic Engineering Menoufia University Menouf32952 Egypt Security Engineering Lab Computer Science Department Prince Sultan University Riyadh11586 Saudi Arabia Department of Electrical Engineering Faculty of Engineering Ahram Canadian University Giza 6th October City Egypt Department of Information Technology College of Computer and Information Sciences Princess Nourah Bint Abdulrahman University Riyadh84428 Saudi Arabia

Medical image encryption is a mandatory process in various healthcare, Internet of Medical Things (IoMT) and cloud services. This paper provides a robust cryptosystem based on a 3D chaotic map for the medical image encryption in secure IoMT and cloud services. The proposed encryption method depends on a 3D chaotic map. With this map, a nonlinear ciphering process is implemented for pixel value diffusion and position permutation. Five operations are conducted in the suggested cryptosystem on the medical images to be transmitted in order to attain a high security level. These operations are 3D chaos generation, chaos histogram equalization, row rotation, column rotation, and XOR operation. To validate the suggested cryptosystem, different medical images with different characteristics are tested. Moreover, the suggested cryptosystem and more recent state-of-the-art security systems are discussed and analyzed in a comparative study. Different assessment parameters are adopted to assess the suggested cryptosystem, which reveals high security performance. The simulation outcomes show that the suggested cryptosystem is trustworthy. Furthermore, it offers high robustness levels and recommended security levels for utilization in healthcare, IoMT and cloud service applications. It is observed that the amount of average entropy obtained by the proposed 3D chaos cryptosystem is 7.95 which is very close to its best value of 8, and the average NPCR value is 99.62% which is also much close to its supreme value of 99.60%. In addition, all other results scored for the test evaluation parameters on the suggested cryptosystem are superior to those of the traditional security systems. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022.

关键词： Cryptography

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A Multiband Tri-branch Monopole Antenna Base on Step Impedance Technique for WLAN, WiMAX, 5G Technology, and IoT Application 20

A Multiband Tri-branch Monopole Antenna Base on Step Impedan...

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20th International Conference on Electrical engineering/electronics, computer, Telecommunications and Information Technology, ECTI-CON 2023

作者： Tangjitjetsada, Maleeya Suangun, Thanakarn Chanwattanapong, Wanchalerm Mahatthanajatuphat, Chatree Phimthai, Kanyanat Akkaraekthalin, Prayoot Faculty of Engineering and Architecture Department of Electronics and Telecommunication Engineering Nonthaburi Thailand University of Phayao Faculty of Engineering Department of Electrical Engineering Phayao Thailand Rajamangala University of Technology Thanyaburi Faculty of Engineering Department of Electronics and Telecommunications Pathum Thani Thailand Faculty of Engineering Department of Electrical and Computer Engineering Bangkok Thailand

ISBN: (纸本)9798350310467

A multiband tri-branch monopole antenna is presented. The antenna structure is constructed of radiating patches with three branches. It is fed by a microstrip transmission line. Essentially, the antenna is a simple structure created by a step impedance technique. In addition, the antenna can be separately regulated for each operational frequency band of 2.44 GHz, 3.36 GHz, and 5.52 GHz by the height of a central patch, a right patch with a thin strip line, and a small patch on the left, respectively. The antenna is manufactured on a size of 50x35 mm2 FR4 substrate with a thickness of 0.8 mm and a permittivity of 4.3. The suggested antenna is appropriate for network board internet of things (NB-IoT) technology working at 2.4 GHz/5.2 GHz/5.8 GHz (WLAN), 3.5 GHz (WiMAX), and 2.3 GHz/2.6 GHz/3.5 GHz (5G technology). The antenna's radiation pattern is omnidirectional, and its average gain is approximately 2dBi. © 2023 IEEE.

关键词： Internet of things

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Some Notes on Tesla Coil Design and Power Transfer Performances 8

Some Notes on Tesla Coil Design and Power Transfer Performan...

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8th International Conference on Smart and Sustainable Technologies, SpliTech 2023

作者： Blažević, Zoran University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Aritecture Dept. of Electronics and Computer Engineering Split Croatia

ISBN: (纸本)9789532901283

In this paper, we revisit the Tesla Coil, a device that had the pivotal role in the development of radio. The analysis is conducted on the basis of the antenna theory, and the feasibility for its application to wireless power transfer is tested by experiment. It is shown that Tesla coil can very well be used for an efficient transmission of electrical energy without wires at small and mid-ranges. © 2023 University of Split, FESB.

关键词： Antenna feeders

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