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

作者： Hussein, Abdelrahman S. Mostafa, Hassan Cairo University Electronics and Communication Engineering Department Giza12613 Egypt University of Science and technology Nanotechnology and Nanoelectronics Program Zewail City of Science and Technology Giza12578 Egypt

ISBN: (纸本)9781665421577

Recently, an emerging instruction set called RISC-V has been considered a paradigm in the computer architecture domain, which has easily got the attention of the hardware community. This is because it is fully open-source, which opens wide horizons for development and innovation. As deep learning applications (DL) are becoming more common, it is very important to evaluate the processors' performance handling such tasks. In these lights, a RISC-V core performance executing a DL task is evaluated. Also, the gap between its ASIC and FPGA implementations is measured in terms of power and area. The main finding is that ASIC achieves better optimization in both aspects more than the FPGA. © 2021 IEEE.

关键词： Rockets

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Rectangular substrate integrated waveguide with negligible losses for multiband applications 6

Rectangular substrate integrated waveguide with negligible l...

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6th International Symposium on Next Generation electronics, ISNE 2017

作者： Banwari, Anamika Acharya, Nagaraj Kumar Sharma, Manish Saxena, Sanjeev Institute of Electronics Engineering National Tsing Hua University Hsinchu Taiwan Undergraduate Program of Electrical Engineering National Tsing Hua University Hsinchu Taiwan Institute of Engineering and System Science National Tsing Hua University Hsinchu Taiwan Department of Electronics and Communication Engineering Amity University Noida India

ISBN: (纸本)9781538630969

This paper reported a design of dielectric rectangular waveguide. It is profitable to transmit extremely high frequencies with insignificant losses. The dimensions of the waveguide are 3×2.3×0.015 cm3. The Polyimide of permittivity 3.5 is used as a substrate. The reflection loss is below-15dB for C, X, Ku and K band frequencies. The return loss is-104.2102 dB and VSWR is 1. The proposed waveguide is of compact size and has multiband performance, insignificant loss and also high performance. It can be used in wireless communication systems. © 2017 IEEE.

关键词： Substrate integrated waveguides

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Analysis of food images: Features and classification

Analysis of food images: Features and classification

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作者： He, Ye Xu, Chang Khanna, Nitin Boushey, Carol J. Delp, Edward J. School of Electrical and Computer Engineering Purdue University United States Department of Electronics and Communication Engineering Graphic Era University United States Cancer Epidemiology Program University of Hawaii Cancer Center United States

ISBN: (纸本)9781479957514

In this paper we investigate features and their combinations for food image analysis and a classification approach based on k-nearest neighbors and vocabulary trees. The system is evaluated on a food image dataset consisting of 1453 images of eating occasions in 42 food categories which were acquired by 45 participants in natural eating conditions. The same image dataset is used to test the classification system proposed in the previously reported work [1]. Experimental results indicate that using our combination of features and vocabulary trees for classification improves the food classification performance about 22% for the Top 1 classification accuracy and 10% for the Top 4 classification accuracy. © 2014 IEEE.

关键词： Image classification

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Overview of Versatile Video Coding (H.266/VVC) and Its Coding Performance Analysis

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IEIE Transactions on Smart Processing and Computing 2023年第2期12卷 122-154页

作者： Lee, Minhun Song, HyeonJu Park, Jeeyoon Jeon, Byeungwoo Kang, Jungwon Kim, Jae-Gon Lee, Yung-Lyul Kang, Je-Won Sim, Donggyu Department of Computer Engineering Kwangwoon University Seoul Korea Republic of Department of Computer Engineering Sejong University Seoul Korea Republic of Department of Electrical and Computer Engineering Sungkyunkwan University Kyunggi-do Korea Republic of Communication and Media Research Laboratory Electronics and Telecommunications Research Institute Deajeon Korea Republic of School of Electronics and Information Engineering Korea Aerospace University Kyunggi-do Korea Republic of Department of Electronic and Electrical Engineering Graduate Program in Smart Factory Ewha Womans University Seoul Korea Republic of

Versatile Video Coding (H.266/VVC) is the newest video coding standard jointly developed by the Joint Video Experts Team (JVET), which is organized by the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG). H.266/VVC provides about 40% bitrate reduction compared with High Efficiency Video Coding (H.265/HEVC) for the same visual quality. This paper introduces in detail the core structure of H.266/VVC by highlighting its features within block partitioning structure, intra/inter prediction, transform, quantization, and in-loop filtering, compared to its predecessor (H.265/HEVC). H.266/VVC yields significantly improved the coding performance, but it increased the computational complexity, particularly for the encoder side, which remains a problem to be tackled for successful commercialization in the future. This paper examined the statistical performance of H.266/VVC coding tools from the bitstreams encoded by the VVC test model (VTM12.0) encoder through rate-distortion optimization under the JVET common test conditions. In addition, the complexity and performance analyses are conducted on the block partitioning structure and group of picture structure. It is expected that an optimized H.266/VVC encoder can be designed and developed by minimizing the coding loss based on the analysis data. © 2023 Institute of electronics and Information Engineers. All rights reserved.

关键词： Image compression

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Adaptive rate transmission for spectrum sharing system with quantized channel state information

Adaptive rate transmission for spectrum sharing system with ...

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Annual Conference on Information Sciences and Systems

作者： Abdallah, Mohamed Salem, Ahmed Alouini, Mohamed-Slim Qaraqe, Khalid A. Electrical and Computer Engineering Texas A and M University at Qatar PO Box 23874 Doha Qatar Department of Electronics and Electrical Communication Cairo University Giza Egypt Electrical Engineering Program KAUST Thuwal Saudi Arabia

ISBN: (纸本)9781424498475

The capacity of a secondary link in spectrum sharing systems has been recently investigated in fading environments. In particular, the secondary transmitter is allowed to adapt its power and rate to maximize its capacity subject to the constraint of maximum interference level allowed at the primary receiver. In most of the literature, it was assumed that estimates of the channel state information (CSI) of the secondary link and the interference level are made available at the secondary transmitter via an infinite-resolution feedback links between the secondary/primary receivers and the secondary transmitter. However, the assumption of having infinite resolution feedback links is not always practical as it requires an excessive amount of bandwidth. In this paper we develop a framework for optimizing the performance of the secondary link in terms of the average spectral efficiency assuming quantized CSI available at the secondary transmitter. We develop a computationally efficient algorithm for optimally quantizing the CSI and finding the optimal power and rate employed at the cognitive transmitter for each quantized CSI level so as to maximize the average spectral efficiency. Our results give the number of bits required to represent the CSI sufficient to achieve almost the maximum average spectral efficiency attained using full knowledge of the CSI for Rayleigh fading channels. © 2011 IEEE.

关键词： Channel state information

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Optical Fiber Refractive Index Sensor

Optical Fiber Refractive Index Sensor

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Electrical engineering (ICEENG), 12th International Conference on

作者： Seif Sabry Mohamed Taher Ahmed Hisham Morshed Electronics and Communication Engineering Program Faculty of Engineering Ain-Shams University Cairo Egypt Electronics and Communication Engineering Dept. Faculty of Engineering Ain-Shams University Cairo Egypt

ISBN: (数字)9798350343427

ISBN: (纸本)9798350343434

Optical sensing is an emerging field that may replace electronic sensing, in the same way that electronic sensing has replaced traditional mechanical sensing. In this project we explore the methods of optical sensing, utilizing optical fiber technology to develop a refractive index sensor that can be of benefit in many applications. The proposed sensor has a single mode-multimode-single mode fiber structure, with a coreless multimode fiber section sandwiched in-between two single mode fiber leads. The surrounding medium of the coreless fiber section acts as a cladding whose refractive index is sensed by monitoring the optical power transmitted through the fiber structure. Two methods of analysis have been used to study the proposed sensor characteristics, the finite difference beam propagation method (FD-BPM) and the Eigen function solution method, and the results are compared to works published in the literature. Proof of concept of the sensor working principle has been established using FD-BPM simulations. Pilot experiments with an available SMS structure have also been conducted.

关键词： Optical fibers Integrated optics Optical fiber sensors Optical propagation Refractive index Optical variables control Optical refraction

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The design and evaluation of an AR-based serious game to teach programming

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Computers and Graphics (Pergamon) 2022年 103卷 1-18页

作者： Sharma, Vandit Bhagat, Kaushal Kumar Huang, Huai-Hsuan Chen, Nian-Shing Department of Electronics and Electrical Communication Engineering Indian Institute of Technology Kharagpur Kharagpur721302 India Advanced Technology Development Centre Indian Institute of Technology Kharagpur Kharagpur721302 India Institute for Research Excellence in Learning Sciences Program of Learning Sciences National Taiwan Normal University Taiwan

The ubiquity of smartphone and tablet devices, combined with the increasing availability of serious games, has enabled students to learn various abstract concepts in an appealing and convenient manner. While several researchers have explored the use of Augmented Reality (AR) in serious games, many of these games have not been critically explained or evaluated. To that end, we employed game-based learning methodologies and Game Learning Analytics (GLA) to systematize the design and evaluation of an AR-based serious game to teach programming. We evaluated our game for usability and effectiveness by conducting a user study on twenty-seven undergraduate students. The evaluation primarily consisted of a learning test conducted twice – before and after playing the game – along with a usability questionnaire that players completed after playing the game. Our results showed that players made significant progress after playing the game. The game helped players improve their basic programming skills, especially for the group having lower prior programming skills. The results highlighted various ways in which GLA can be used to benefit different stakeholders in the game. Based on players’ qualitative responses, we also identified several areas of improvement, most prominently the trade-off between ease of use and game complexity. We provide suggestions and discuss implications for future work. © 2022 Elsevier Ltd

关键词： Serious games

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NONLINEAR H ∞ FOR SPACECRAFT ATTITUDE CONTROL

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IFAC Proceedings Volumes 2005年第1期38卷 49-54页

作者： Ho-Nien Shou Ying-Wen Jan Department of Aviation & Communication Electronics Air Force Institute of Technology Mechanical Engineering Department National Space Program Office

This paper presents a nonlinear H ∞ state feedback attitude control design method for spacecraft large angle maneuvers, which is subject to moment-of-inertia (MOI) uncertainty. Moreover, the operation of attitude maneuver is affected by external disturbances. The attitude control design thus employs a nonlinear H ∞ method to achieve stability and robustness so that both MOI uncertainty and external disturbances can be accounted for. In the paper, a solution for robust spacecraft attitude control is conjectured and shown to satisfy the nonlinear H ∞ criterion. This results in a nonlinear H ∞ control law that is capable of robustly stabilizing the maneuver in the presence of external disturbance and spacecraft inertia uncertainty. The simulation results are presented to demonstrate the effectiveness of the proposed design method.

关键词： moment-of-inertia uncertainty nonlinear robust control large angle attitude maneuver external disturbances

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Image-based food volume estimation

Image-based food volume estimation

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5th International Workshop on Multimedia for Cooking and Eating Activities, CEA 2013

作者： Xu, Chang He, Ye Parra, Albert Delp, Edward Khanna, Nitin Boushey, Carol School of Electrical and Computer Engineering Purdue University West Lafayette IN United States Department of Electronics and Communication Engineering Graphic Era University Dehradun India Cancer Epidemiology Program University of Hawaii Cancer Center Honolulu HI United States

ISBN: (纸本)9781450323925

In this paper, we propose an extension to our previous work on food portion size estimation using a single image and a multi-view volume estimation method. The single-view technique estimates food volume by using prior information (segmentation and food labels) generated from food identification methods we described earlier. For multi-view volume estimation, we use "Shape from Silhouettes" to estimate the food portion size. The experimental results of our volume estimation methods demonstrate our results with respect to accuracy and reliability. © Copyright 2013 ACM.

关键词： Image reconstruction

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Constructive algorithms for determining inverses and syndrome matrices of multidimensional convolutional encoders using the Gröbner basis approach

Constructive algorithms for determining inverses and syndrom...

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Asia-Pacific Conference on communications

作者： C. Charoenlarpnopparut Pramote Jangisarakul Electronics and Communication Engineering Program Sirindhorn International Institute of Technology Thammasat University Thailand

A representation of an m-D convolutional encoder is analogous to the representation of a transfer function for a MIMO m-D FIR system. The encoder matrix is usually not square and thus finding its inverse typically employs the Moore-Penrose generalized inverse. However, the result may not be FIR (polynomial matrix) even if the generator matrix is a polynomial. In this paper a constructive algorithm based on the usage of Grobner basis is presented along with detailed examples. The result obtained can be parameterized to cover the class of all possible FIR inverses. In addition, by using the computation method of syzygy with the Grobner basis module, the syndrome matrix for a given m-D convolutional encoder is shown.

关键词： Multidimensional systems Polynomials Convolutional codes Finite impulse response filter Equations Decoding Transfer functions MIMO Error correction codes Error correction

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