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Japan-Egypt International Conference on Electronics, Communications and Computers (JEC-ECC)

作者： Mohamed Fawzy Ahmed Hussien Hassan Mostafa Siemens Digital Industries Software Cairo Egypt Electronics and Electrical Communications Engineering Department Cairo University Giza Egypt Nanotechnology and Nanoelectronics Program Zewail City of Science and Technology October Gardens 6th of October University of Science and technology Giza Egypt

ISBN: (纸本)9781665464642

Unplanned seizures are caused by a disorder in the central nervous system known as epilepsy. Although significant advancements have been made in the realm of non-EEG wearable devices, there is still much room for improvement in the field of EEG-based seizure detection and prediction using ML. The management of epilepsy has a lot of promise to be aided by non-invasive wearable technology. The suggested study intends to design and implement a support vector machine (SVM) classification-based epileptic seizure detection system based on various wearable devices. The proposed technique for detecting seizures accomplishes According to data for seizure detection, our system consistently achieves a sensitivity of 100% and an accuracy of 97%. High level MATLAB model creation is part of the design cycle. Despite the fact that high performance cannot be achieved with just one signal. Although a high performance detection system cannot achieve the requisite sensitivity and accuracy with a single signal, we presented various combining techniques. RTL modelling, design optimization, FPGA implementation, and functional verification are all included in the implementation cycle. The capacity of the FPGA’s partial dynamic reconfiguration is suggested for implementation in order to make better use of the available resources. Comparing the proposed implementation to relevant earlier work, it demonstrated improved utilization.

关键词： Support vector machines Training Performance evaluation Sensitivity Wearable computers Epilepsy Feature extraction

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Guava Trees Disease Monitoring Using the Integration of Machine Learning and Predictive Analytics 3

Guava Trees Disease Monitoring Using the Integration of Mach...

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3rd Novel Intelligent and Leading Emerging Sciences Conference, NILES 2021

作者： Elsayed, Mahmoud Hassan, Nourhan Maher, Marina Waleed, Nouran Reda, Rehab Eldin, Haitham Sharaf Mostafa, Hassan The American University of Cairo Mechatronics Department Egypt Nile University Giza12677 Egypt Communication Engineering Alexandria University Egypt Biomedical Engineering Cairo University Egypt Tanta University Egypt Cairo University Faculty of Science Biophysics Department Egypt Cairo University Electronics and Electrical Communications Engineering Department Giza Egypt University of Science and technology Nanotechnology and Nanoelectronics Program Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt

ISBN: (纸本)9781665421577

The increase in population, food demand, and the pollution levels of the environment are considered major problems of this era. For these reasons, the traditional ways of farming are no longer suitable for early and accurate detection of biotic stress. Recently, precision agriculture has been extensively used as a potential solution for the aforementioned problems using high resolution optical sensors and data analysis methods that are able to cope with the resolution, size and complexity of the signals from these sensors. In this paper, several methods of machine learning have been utilized in order to study pests, their types, population, and agricultural conditions in terms of soil and climate for some crops such as potatoes, guava, and cotton, which are among the main Egyptian crops. In the process of obtaining a suitable estimate of insects population affecting each of the aforementioned crops, a hardware model control, based on the results provided by the predictive analysis, an estimate of the electromagnetic force is applied to the cultivated areas to get rid of the pests as well as giving a background to farmers about the possibility of infecting a crop such as Potato with Late Blight, according to climatic conditions. © 2021 IEEE.

关键词： Model predictive control

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Hardware-Accelerated ZYNQ-NET Convolutional Neural Networks on Virtex-7 FPGA

Hardware-Accelerated ZYNQ-NET Convolutional Neural Networks ...

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International Conference on Microelectronics, ICM

作者： Ahmed J. Abd El-Maksoud Amr Gamal Aya Hesham Gamal Saied Mennat-Allah Ayman Omnia Essam Sara M. Mohamed Eman El Mandouh Ziad Ibrahim Sara Mohamed Hassan Mostafa Faculty of Engineering Cairo University Giza Egypt Mentor Graphics Nanotechnology and Nanoelectronics Program Zewail City of Science and Technology University of Science and Technology 6th of October Giza Egypt

ISBN: (纸本)9781665408400

Convolutional neural network is a class of deep neural networks that has made a great breakthrough in image recognition. CNNs are commonly used to detect and classify visual applications so that they are frequently embedded in image classification tasks. The common trend nowadays is to accelerate the processing of CNNs in order to use them in real-time applications such as image classification and object recognition. This paper presents the implementation of ZynqNet CNN architecture on FPGA. The full ZynqNet CNN layers are implemented on FPGA to reach the max acceleration and make full use of all DSP units. Several optimizations techniques are used in different design phases to improve processing speed, utilized area, and power consumption. In addition, the proposed hardware accelerator achieves 15.6 fps for ZynqNet CNN at maximum frequency. The proposed architecture runs at two different frequencies of 100MHz and 125MHz, and is implemented on Virtex-7 FPGA.

关键词： Visualization Power demand Neural networks Real-time systems Convolutional neural networks Task analysis Field programmable gate arrays

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Data aggregation in synchronous large-scale IoT networks: Granularity, reliability, and delay tradeoffs

arXiv

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arXiv 2021年

作者： Nabil, Yasser ElSawy, Hesham Al-Dharrab, Suhail Mostafa, Hassan Attia, Hussein Department of Electronics and Communication Engineering Cairo University Giza12613 Egypt University of Science and technology Nanotechnology and Nanoelectronics Program Zewail City of Science and Technology Giza12578 Egypt Dhahran31261 Saudi Arabia

This paper studies data aggregation in large-scale regularly deployed Internet of Things (IoT) networks, where devices generate synchronized time-triggered traffic (e.g., measurements or updates). The data granularity, in terms of information content and temporal resolution, is parameterized by the sizes of the generated packets and the duty cycle of packet generation. The generated data packets at the devices are aggregated through static terrestrial gateways. Universal frequency reuse is adopted across all gateways and randomized scheduling is utilized for the IoT devices associated with each gateway. Such network model finds applications in environmental sensing, precision agriculture, and geological seismic sensing to name a few. To this end, we develop a novel spatiotemporal mathematical model to characterize the interplay between data granularity, transmission reliability, and delay. The developed model accounts for several IoT design parameters, which include packet sizes, generation duty cycle, devices and gateways spatial densities, transmission rate adaptation, power control, and antenna directivity. For tractable analysis, we propose two accurate approximations, based on the Poisson point process, to characterize the signal-to-interference-plus-noise-ratio (SINR) based transmission reliability. For the delay analysis, we propose a phase-type arrival/departure (PH/PH/1) queueing model that accounts for packet generation, transmission scheduling, and rate-sensitive SINR-based packet departure. The developed model is utilized to obtain the optimal transmission rate for the IoT devices that minimizes delay. The numerical results delineate the joint feasibility range of packet sizes and inter-arrival times for data aggregation and reveal significant gains when deploying directional antennas. Copyright © 2021, The Authors. All rights reserved.

关键词： Internet of things

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A 4 GS/s 3-bit Highly Linear Time-Based Analog- to-Digital Converter for Massive MIMO Systems

A 4 GS/s 3-bit Highly Linear Time-Based Analog- to-Digital C...

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Japan-Egypt International Conference on Electronics, Communications and Computers (JEC-ECC)

作者： Ahmed Lutfi Elgreatly Ahmed Ahmed Shaaban Hassan Mostafa Rania Mohamed Abdalla El-Sayed Mahmoud El-Rabaie Faculty of Engineering Port-Said University Port-Said Egypt Nanotechnology and Nanoelectronics Program University of Science and Technology Zewail City of Science and Technology 6th of October Giza Egypt Faculty of Electronic Engineering Menoufia University Menouf Egypt

ISBN: (纸本)9781665482936

Recent studies on modern wireless communication systems are focusing on Massive Multiple- Input Multiple-Output (MIMO) technology for its high potential. MIMO systems require high resolution Analog-to- Digital Converters (ADCs) in the Base Stations (BS) to reduce quantization noise. However, using high resolution ADCs causes higher power consumption at the BS and the hardware costs increase. Reducing the resolution of the ADCs at the BS causes severe non-linearity errors due to additional quantization noise. In other words, MIMO systems cannot achieve high performance without highly linear and low resolution ADCs. In this paper, a 3-bit highly linear Time- based ADC (T-ADC) is presented. The proposed circuit exhibits high linearity, simple design and low power which make it the best solution for the problems that limit the performance of the MIMO systems. The proposed ADC exhibits a linearity error of 0.56 % with a dynamic range equals to 800 mV and at small power consumption of 2.2 mW. The supply voltage used equals to 1.2 V using industrial 65 nm TSMC CMOS technology. The clock frequency equals to 4 GHz at a maximum input frequency of 2 GHz.

关键词： Wireless communication Power demand Quantization (signal) Linearity Voltage Receivers Massive MIMO

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High Colour Rendering Index and Warm Emission of Conventional White-Led Capped with Metal-Phthalocyanine/Cdse Nanocomposites

SSRN

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SSRN 2023年

作者： Elkalashy, Ola Ibraheem, Fatma Said, Shimaa A. Mohamed, Shaimaa Ali El-Hamalawy, Ahmed Al-Kamel, Abdel Naser Khalil, Mohamed Shafik El-Sayed, Afaf Photometry Dept. National Institute of Standards Giza12211 Egypt Physics Dept. Faculty of Science Al-Azhar University Cairo11754 Egypt Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt Nanotechnology and Nanoelectronics Engineering Program University of Science and Technology Zewail City of Science and Technology October Gardens 6th Egypt Department of Physics Faculty of Science Menoufia University Shebin El Kom Egypt 20018 Spain

Conventional phosphor-converted white light-emitting diodes (WLEDs) have attracted considerable attention as a new generation and potential substitute for traditional light sources. Despite this, they face substantial challenges related to their low colour rendering index and chromatic stability, which rely critically on the phosphor properties. Here, we attempt to meet these challenges by introducing a free-standing nanocomposite film consisting of pure CdSe QDs, FePc/CdSe, or NiPc/CdSe nanocomposites on top of the conventional WLED. The colour rendering index (CRI), correlated colour temperature (CCT), chromaticity coordinates and emission spectrum were investigated for all capped WLEDs and compared with the conventional one. Interestingly, capping the WLEDs with organic/inorganic FePc/CdSe or NiPc/CdSe nanocomposites significantly increases their CRI values;R9 increased from 9 to > 50 and Ra increased from 70 to > 85. In addition, they are shifting the colour coordinates of the WLEDs slightly to the yellow-red region and converting the WLED emission from cold-white to warm-white. We further demonstrate the excellent colour stability (CRI and CCT values) of all MPc/QDs capped WLEDs with the variation of operating current and time. Thus, the organic/inorganic FePc/CdSe or NiPc/CdSe nanocomposites are promising materials for improving the performance of conventional WLEDs. © 2023, The Authors. All rights reserved.

关键词： Nanocomposites

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High Colour Rendering Index and Warm Emission of Conventional White-Led Capped with Metal-Phthalocyanine/Cdse Nanocomposites

SSRN

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SSRN 2023年

作者： Elkalashy, Ola Ibraheem, Fatma Said, Shimaa A. Mohamed, Shaimaa Ali El-Hamalawy, Ahmed Al-Kamel, Abdel Naser Khalil, Mohamed Shafik El-Sayed, Afaf Photometry Dept. National Institute of Standards Giza12211 Egypt Physics Dept. Faculty of Science Al-Azhar University Cairo11754 Egypt Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt Nanotechnology and Nanoelectronics Engineering Program University of Science and Technology Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt Department of Physics Faculty of Science Menoufia University Shebin El Kom Egypt Centro de Física de Materiales CFM/MPC UPV/EHU 20018 Spain

关键词： Nanocomposites

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Higher Colour Rendering Index and Warmer Emission of Conventional White-Led Capped with Metal-Phthalocyanine/Cdse-Qds Composites

SSRN

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SSRN 2023年

作者： Elkalashy, Ola Ibraheem, Fatma Said, Shimaa A. Mohamed, Shaimaa Ali El-Hamalawy, Ahmed Al-Kamel, Abdel Naser Khalil, Mohamed Shafic El-Sayed, Afaf Photometry Dept. National Institute of Standards Giza12211 Egypt Physics Dept. Faculty of Science Al-Azher University Cairo11754 Egypt Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt Nanotechnology and Nanoelectronics Engineering Program University of Science and Technology Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt Department of Physics Faculty of Science Menoufia University Shebin El Kom Egypt Centro de Física de Materiales CFM/MPC UPV/EHU 20018 Spain

Conventional phosphor-converted white light-emitting diodes (WLEDs) have attracted considerable attention as a new generation and potential substitute for traditional light sources. Despite this, they face substantial challenges related to their low colour rendering index and chromatic stability, which rely critically on the phosphor properties. Here, we attempt to meet these challenges by introducing a free-standing composite film consisting of pure CdSe-QDs, FePc/CdSe-QDs, or NiPc/CdSe QDs composites on top of the conventional WLED. The colour rendering index (CRI), correlated colour temperature (CCT), chromaticity coordinates and emission spectrum were investigated for all capped WLEDs and compared with the conventional one. Interestingly, capping the WLEDs with organic/inorganic FePc/CdSe-QDs or NiPc/CdSe-QDs composites significantly increases their CRI values;R9 increased from 9 to > 50 and Ra increased from 70 to > 85. In addition, they are shifting the colour coordinates of the WLEDs slightly to the yellow-red region and converting the WLED emission from cold-white to warm-white. We further demonstrate the excellent colour stability (CRI and CCT values) of all MPc/QDs capped WLEDs with the variation of operating current and time. Thus, the hybrid organic/inorganic FePc/CdSe-QDs or NiPc/CdSe-QDs composites are promising materials for improving the performance of conventional WLEDs. © 2023, The Authors. All rights reserved.

关键词： Phosphors

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Benzyl Viologen Dichloride as a Novel Ligand for Cdse Cqds in Hybrid Qds/Organic Photodiodes

SSRN

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SSRN 2024年

作者： Elkalashy, Ola El-Hamalawy, Ahmed Al-Kamel, Abdel Naser Khalil, Mohamed Shafik El-Sayed, Afaf Mohamed, Shaimaa Ali Photometry Dept. National Institute of Standards Giza12211 Egypt Department of Physics Faculty of Science Menoufia University Shebin El Kom Egypt Physics Dept. Faculty of Science Al-Azher University Cairo11754 Egypt Donostia-San Sebastián20018 Spain Universidad del País Vasco Dpto. de Física Aplicada I Donostia-San Sebastián20018 Spain Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt Nanotechnology and Nanoelectronics Engineering Program University of Science and Technology Zewail City of Science and Technology October Gardens 6th of October Giza12578 Egypt

The use of colloidal quantum dots (CQDs) in advanced optoelectronic devices requires the substitution of bulky long ligands with short organic ligands. The search for a short-ligand that can create stable quantum solids without compromising the confinement of the CQDs is of paramount *** this context, we present a novel surface passivation ligand, benzyl viologene dichloride (BVD-Cl), as a replacement for the conventional trioctylphosphine oxide (TOPO) capping of CdSe QDs. BVD-Cl enables the creation of a CdSe quantum solid while reducing interdot spaces and retaining quantum confinement. To demonstrate the efficacy of this ligand-exchange process, we utilised Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectrometry (EDX), high-resolution transmission electron microscopy (HR-TEM), and X-ray photoemission spectroscopy (XPS). We then implanted the new BVD-Cl:CdSe quantum film as the main inorganic QDs layer into a hybrid photodiode combined with poly 3-hexylthiophene (P3HT) as the organic layer. The photodiode demonstrated high sensitivity to light stimuli and rectifying behaviour, with a responsivity of 70 mA/W at 550 nm. Our observations imply that using BVD-Cl as a surface passivation ligand for CQDs has significant implications for the development of advanced optoelectronic devices. © 2024, The Authors. All rights reserved.

关键词： Selenium compounds

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Technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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