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IEEE Wireless Communications and Networking Conference Workshops (WCNCW)

作者： Yang Liu Lina Hou Lei Liu Yinghui Zhang Minglu Jin College of Electronic Information Engineering Inner Mongolia University Hohhot China Department of Electrical and Computer Engineering University of Nebraska-Lincoln Lincoln United States Faculty of Electronic Information and Electrical Engineering Dalian University of Technology Dalian China

ISBN: (数字)9781728151786

ISBN: (纸本)9781728151793

To reduce power consumption while ensuring the spectral efficiency of millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems, we propose an energy-efficient hybrid precoding based on the improved population based incremental learning (PBIL) algorithm which introduced the random mutation (called as MPBIL hybrid precoding). Specifically, the MPBIL hybrid precoding using switches and inverters in analog part, which can greatly reduce energy consumption. Additionally, we utilize the proposed MPBIL algorithm to iteratively search for the best analog beamformer. The number of iterations is greatly reduced because that the search efficiency of the proposed MPBIL algorithm is significantly improved by introducing the random mutation which increase the diversity of the population. As a result, the proposed MPBIL-based hybrid precoding has lower complexity and higher energy efficiency than some other traditional algorithms.

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Satellite-Based Quantum Key Distribution in the Presence of Bypass Channels

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PRX Quantum 2023年第4期4卷 040320-040320页

作者： Masoud Ghalaii Sima Bahrani Carlo Liorni Federico Grasselli Hermann Kampermann Lewis Wooltorton Rupesh Kumar Stefano Pirandola Timothy P. Spiller Alexander Ling Bruno Huttner Mohsen Razavi School of Electronic and Electrical Engineering University of Leeds Leeds LS2 9JT United Kingdom Department of Electrical and Electronic Engineering University of Bristol Bristol BS8 1UB United Kingdom Institute für Theoretische Physik III Heinrich Heine Universität D-40225 Düsseldorf Germany Quantum Engineering Centre for Doctoral Training H. H. Wills Physics Laboratory University of Bristol Bristol BS8 1FD United Kingdom Department of Mathematics University of York Heslington York YO10 5DD United Kingdom School of Physics Engineering and Technology University of York York YO10 5DD United Kingdom York Centre for Quantum Technologies University of York York United Kingdom Department of Computer Science University of York York YO10 5GH United Kingdom Centre for Quantum Technologies National University of Singapore 117543 Singapore Department of Physics Faculty of Science National University of Singapore 117551 Singapore ID Quantique Geneva Switzerland

The security of prepare-and-measure satellite-based quantum key distribution (QKD), under restricted eavesdropping scenarios, is addressed. We particularly consider cases where the eavesdropper, Eve, has limited access to the transmitted signal by Alice and/or Bob’s receiver station. This restriction is modeled by lossy channels between relevant parties, where the transmissivity of such channels can, in principle, be bounded by monitoring techniques. An artifact of such lossy channels is the possibility of having bypass channels, those that are not accessible to Eve but that may not necessarily be characterized by the users either. This creates interesting unexplored scenarios for analyzing QKD security. In this paper, we obtain generic bounds on the key rate in the presence of bypass channels and apply them to continuous-variable QKD protocols with Gaussian encoding with direct and reverse reconciliation. We find regimes of operation in which the above restrictions on Eve can considerably improve system performance. We also develop customized bounds for several protocols in the BB84 family and show that, in certain regimes, even the simple protocol of BB84 with weak coherent pulses is able to offer positive key rates at high channel losses, which would otherwise be impossible under an unrestricted Eve. In this case, the limitation on Eve would allow Alice to send signals with larger intensities than the optimal value under an ideal Eve, which effectively reduces the effective channel loss. In all these cases, the part of the transmitted signal that does not reach Eve can play a nontrivial role in specifying the achievable key rate. Our work opens up new security frameworks for spaceborne quantum communications systems.

关键词： Quantum communication, protocols & technology

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In situ fabrication of organic-inorganic perovskite polymer composite films for ultrawide color gamut lcd display 57th

In situ fabrication of organic-inorganic perovskite polymer ...

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57th SID International Symposium, Seminar and Exhibition, Display Week, 2020

作者： Li, Xiang Qu, Xiangwei Wen, Zuoliang Xu, Bing Wang, Kai Sun, Xiao Wei Shenzhen Planck Innovation Technologies Pte. Ltd ShenzhenGuangdong China Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting Department of Electrical and Electronic Engineering Southern University of Science and Technology ShenzhenGuangdong China Department of Electrical & Computer Engineering Faculty of Engineering National University of Singapore Singapore

We report an ultrawide color gamut LCD displays made of organic-inorganic perovskite polymer composite film. The color gamut of the display is 123% and 92% that of the NTSC 1953 and Rec. 2020, respectively. The combination of better stability and improved color purity of the perovskite material provides a viable approach for LCD backlights. © 2020 SID.

关键词： Perovskite

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Superior Performances Via Designed Multiple Sub-Hierarchical Embossments within Interfaces for Flexible Sensors

SSRN

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SSRN 2022年

作者： Zhang, Yujing Wang, Yuheng Wang, Chenying Zhao, Yifan Jing, Weixuan Wang, Song Zhang, Yaxin Xu, Xiangyue Zhang, Fuzheng Yu, Kaige Mao, Qi Lin, Qijing Han, Feng Tian, Bian Zhou, Ziyao Zhao, Libo Ren, Wei Liu, Ming Jiang, Zhuangde State Key Laboratory for Manufacturing Systems Engineering Collaborative Innovation Center of High-End Manufacturing Equipment International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology Xi'an Jiaotong University Xi’an710049 China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education International Center for Dielectric Research School of Electronic Science and Engineering State Key Laboratory for Manufacturing Systems Engineering The International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology Xi'an Jiaotong University Xi’an710049 China State Key Laboratory for Manufacturing Systems Engineering School of Mechanical Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies Xi'an Jiaotong University Xi’an710049 China Frontier Institute of Science and Technology School of Science State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi’an China The Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo315211 China

Ultrahigh sensitivity and wide detection range are critical for flexible pressure sensors in the further application of electronic skin and wearable electronics. Here, a flexible pressure sensor with rGO coated on a micro cone array was fabricated. By using the molecular dynamics simulation to investigating the formation mechanism of rGO, its optimized micro-morphology can be obtained and understood for improving the performances of sensors. Both an ultrahigh sensitivity (133.003 kPa-1, 10 kPa-1) were remarkably achieved due to the multiple sub-hierarchical morphological embossments within interfaces of rGO. Furthermore, the designed sensor using rGO with embossments enables several practical applications, showing a fast response time (27 ms) in child door lock monitoring and a distinct step-shape response in robotic arm load monitoring, respectively. And no frequency dependence under loading is also observed obviously. In addition, micro-pressure monitoring, including heart beat (excellent robustness over 10000 cycles) and vocal cord vibration (sound track), can be monitored clearly owing to embossments morphology of rGO as well. The simulation model of sub-microstructures on rGO shows that the embossments can build the multiple contacts within the interfaces for higher signals output. The designed sub-microstructures of rGO can be an effective strategy to afford superior performances of pressure sensors for universal applications in physiological signal monitoring and physical motion analysis. © 2022, The Authors. All rights reserved.

关键词： Microstructure

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Corrigendum to “Maximum power point tracking for grid-connected photovoltaic system using Adaptive Fuzzy Logic Controller” [computers and Electrical engineering, Volume 110, September 2023, 108879]

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computers and Electrical engineering 2024年 120卷

作者： Majid Ali Mujtaba Ahmad Mohsin Ali Koondhar Muhammad Sarfraz Akram Aanchal Verma Baseem Khan Center for Research on Microgrids (CROM) AAU Energy Aalborg University Aalborg 9220 Denmark Institute of Energy and Environmental Engineering University of Punjab Pakistan Department of Electrical Engineering Quaid-e-Awam University of Engineering Science and Technology Nawabshah Sindh Pakistan Department of Electrical Engineering Indian Institute of Technology (Banaras Hindu University) Varanasi UP 221005 India Department of Electrical and Computer Engineering Hawassa University Hawassa Ethiopia Department of Electrical and Electronic Engineering Technology Faculty of Engineering and the Built Environment University of Johannesburg Johannesburg South Africa

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HRV stress analysis using k-NN clustering technique

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AIP Conference Proceedings 2023年第1期2579卷

作者： Jatin Karthik Tripathy Abhirup Chakravarty Mohd Rashidi Che Beson Sumathi Doraikannan Pradeep Reddy School of Computer Science and Engineering VIT-AP University Vijayawada Andhra Pradesh India Faculty of Electronic Engineering Technology Universiti Malaysia Perlis (UniMAP) Kangar Perlis Malaysia Advanced Communication Engineering Centre of Excellence (ACE-CoE) Universiti Malaysia Perlis Kangar Perlis Malaysia

Human life in the modern scenario has become quite taxing; mental health issues are on the rise. Our medical science may have progressed well enough to furnish physical health excellency in the general populace (of course, in relative terms), but mental health is still taboo. This is especially so in many of the non-first-world countries, where forthcoming mental health issues and asking for help can lead to anything from public ridicule to social ostracism. In such a scenario, it is of paramount importance that someone comes up with a more private approach to mental health care and well-being. In this paper, the authors discuss how the effects of stress can be monitored using a different implementation of k-NN (k-Nearest Neighbors). With this, using the Manhattan distance metric we were able to achieve 99.84% accuracy, and even after the application of PCA, we achieved 93.97% accuracy.

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GPS-Net: Graph Property Sensing Network for Scene Graph Generation

GPS-Net: Graph Property Sensing Network for Scene Graph Gene...

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Conference on computer Vision and Pattern Recognition (CVPR)

作者： Xin Lin Changxing Ding Jinquan Zeng Dacheng Tao School of Electronic and Information Engineering South China University of Technology Faculty of Engineering UBTECH Sydney AI Centre School of Computer Science The University of Sydney Darlington NSW Australia

ISBN: (数字)9781728171685

ISBN: (纸本)9781728171692

Scene graph generation (SGG) aims to detect objects in an image along with their pairwise relationships. There are three key properties of scene graph that have been underexplored in recent works: namely, the edge direction information, the difference in priority between nodes, and the long-tailed distribution of relationships. Accordingly, in this paper, we propose a Graph Property Sensing Network (GPS-Net) that fully explores these three properties for SGG. First, we propose a novel message passing module that augments the node feature with node-specific contextual information and encodes the edge direction information via a tri-linear model. Second, we introduce a node priority sensitive loss to reflect the difference in priority between nodes during training. This is achieved by designing a mapping function that adjusts the focusing parameter in the focal loss. Third, since the frequency of relationships is affected by the long-tailed distribution problem, we mitigate this issue by first softening the distribution and then enabling it to be adjusted for each subject-object pair according to their visual appearance. Systematic experiments demonstrate the effectiveness of the proposed techniques. Moreover, GPS-Net achieves state-of-the-art performance on three popular databases: VG, OI, and VRD by significant gains under various settings and metrics. The code and models are available at https://***/taksau/GPS-Net.

关键词： Context modeling Mathematical model Ear Visualization Message passing Dogs Legged locomotion

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Cyber security after COVID 19: A review

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AIP Conference Proceedings 2023年第1期2839卷

作者： Muthana Alisawi Layth Hammood Alaan Ghazi Sirwan Saber Abdullah Aras Al-Dawoodi Abbas Hussein Ali Ashraf Nabeel Almallah Nidhal Mohsin Hazzaa Yousif Mohammed Wahab Asmaa Yaseen Nawaf Department of Computer science college of computer science and information technology University of Kirkuk. Kirkuk Iraq Computer science informatics institute Gazi university Çankaya Ankara 06690 Turkey Institute of science faculty of technology computer engineering Gazi university Çankaya Ankara 06690 Turkey Department of Computer Technical Engineering Al-Qalam university College Kirkuk Iraq Faculty of Applied and Human Sciences University Malaysia Perlis Perlis Malaysia Faculty of Electronic Engineering Technology University Malaysia Perlis Perlis Malaysia Information Technology and Communication Department Rafidain Bank Baghdad Iraq Department of Quality Assurance and Academic Performance University of Kirkuk Kirkuk Iraq Department of computer science college of computer and mathematics University of Mosul Mosul Iraq Gazi University - Turkey Çankaya Ankara 06690 Turkey

Nowadays, when talking about cybersecurity, the talk is associated with the most important event in the world during the year 2020, which is COVID-19. Although the digital world exists parallel to the real world, humanity did not have to rely on the Internet to accomplish its tasks. However, the situation changed after the Corona pandemic, as the world found itself in front of one option, which is to work remotely to overcome the impact of the pandemic. Therefore, with this massive and sudden digital transformation on the global level, cyber criminals have many opportunities through cyber vulnerabilities that appear due to the rapid shift to remote work. In this study, we presented an accurate review of the effects that accompanied the occurrence of the Coronavirus pandemic on cybersecurity. Moreover, the world has seen a growing number of cyber-attacks due to these effects, which led to attract the attention to the importance of cyber security to ensure full benefit from digital services without exposure to damage. Also, we indicated in this paper a number of recommendations that contribute to mitigating the damages of cyber-attacks or preventing their occurrence. Furthermore, Cyber security should be a complete approach and not limited to the technical side, where the awareness of the community about cyber risks should contribute to preventing cyber criminals from achieving their goals.

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Designing a virtual reality system for clinical education and examination

Computers and Education: X Reality

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computers and Education: X Reality 2024年 5卷

作者： Akinwale, Olawale Babatunde Abiona, Olatunde Oluwatope, Ayodeji Oludola Otuyemi, Olayinka Donald Ijarotimi, Omotade Adebimpe Olubusola Komolafe, Abiola Aregbesola, Stephen Babatunde Kolawole, Babatope Ayodeji Adetutu, Olufemi Mayowa Agunbiade, Ojo Melvin Ayinde, Adeboye Titus Idowu, Lanre Okunola, Oluseye Ademola Adediwura, Alaba Adeyemi Department of Electronic and Electrical Engineering Faculty of Technology Obafemi Awolowo University Ile-Ife 220005 Nigeria Computer Information Systems Department College of Arts and Sciences Indiana University Northwest 3400 Broadway Gary 46408 IN United States Department of Computer Science and Engineering Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Child Dental Health Faculty of Dentistry College of Health Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Obstetrics Gynaecology and Perinatology Faculty of Clinical Sciences College of Health Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Nursing Science Faculty of Basic Medical Science College of Health Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Oral and Maxillofacial Surgery Faculty of Dentistry College of Health Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Medicine Faculty of Clinical Sciences College of Health Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Dept. of Demography and Social Statistics Faculty of Social Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Sociology and Anthropology Faculty of Social Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Psychology Faculty of Social Sciences Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Educational Technology and Library Studies Obafemi Awolowo University Ile-Ife 220005 Nigeria Department of Educational Foundation and Counselling Obafemi Awolowo University Ile-Ife 220005 Nigeria

The COVID-19 pandemic clearly showed how much medical and clinical students’ education relied on physical instruction and examination. The work presented here was born by the fact that medical and clinical education had to be suspended during the social distancing phase of the pandemic. This work presents the lessons learned from creating a virtual reality system (VTRACS) for educating and assessing clinical students on a limited budget. Our work showed that clinical education could be done in a virtual space with a minimal virtual reality setup and a low-cost virtual reality headset. © 2024 The Authors

关键词： Clinical education Haptic feedback Low-cost Medical education Virtual reality

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Effect of aspect ratio on horizontal field magnetoresistance 8th

Effect of aspect ratio on horizontal field magnetoresistance

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8th International Conference on Advanced Materials and engineering Materials, ICAMEM 2019

作者： Phetchakul, Toempong Chemthung, Yothin Poyai, Amporn Electronic Department Faculty of Engineering King Mongkut’s Institute of Technology Ladkrabang Bangkok Thailand Thai Microelectronics Center National Electronics and Computer Technology Center Chachoengsao Thailand

ISBN: (纸本)9783035714883

This paper studies the aspect ratio (W/L), width (W) per length (L) of semiconductor resistor based on Hall effect current mode for horizontal magnetic field. At low concentration, 1014 cm-3, W/L 1). The contribution factors ρ(L/W) for high ΔR are low concentration and aspect ratio (W/L 1). At high concentration 1017 cm-3, aspect ratio and magnetoresistance are not sensitive to magnetic field because the Hall effect hardly occurs in high concentration material. © 2019 Trans Tech Publications Ltd, Switzerland.

关键词： Magnetoresistance

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