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Wireless Power Week (WPW)

作者： Kaiyuan Wang Rui Liang Zhen Sun Junming Zeng Yun Yang School of Electrical and Electronic Engineering Nanyang Technological University Singapore Department of Electrical and Electronic Engineering Hong Kong Polytechnic University Hong Kong SAR

ISBN: (数字)9798350349139

ISBN: (纸本)9798350349146

This paper presents an octagonal prism-based wireless charging container with multiple folding coils winding equidistantly around the surface of the container. The optimal coefficient for the equant ratio has been identified to be 1/7 for achieving a more even distribution of magnetic flux compared to the conventional design of the octagonal prism-based wireless charging container. This advancement enables omnidirectional wireless charging for multiple dynamic receivers with minimal power fluctuations.

关键词： Coils Wireless communication Magnetic flux density Fluctuations Design methodology Inductive charging Windings

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4 × 25 Gb/s On-Chip WDM Cascaded with MOSCAP-Driven Silicon Micro Ring Modulators

4 × 25 Gb/s On-Chip WDM Cascaded with MOSCAP-Driven Silicon...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Wei-Che Hsu Nabila Nujhat Benjamin Kupp John F. Conley Alan X. Wang School of Electrical Engineering and Computer Science Oregon State University Corvallis Oregon USA Department of Electrical and Computer Engineering Baylor University Waco Texas USA

ISBN: (纸本)9798350369311

We present an on-chip wavelength division multiplexing cascaded by four MOSCAP silicon microring modulators integrated with high-mobility titanium-doped indium oxide. With promising 4 × 25 Gb/s data rates, it holds potential for advanced optical communication. © 2024 The Author(s) OCIS codes: (250.4110) Modulators; (250.7360) Waveguide modulators; (130.7408) Wavelength filtering devices

关键词： Modulation Multichip modules Ring lasers Lasers and electrooptics Wavelength division multiplexing Silicon Optical fiber communication System-on-chip Quantum cascade lasers Optical arrays

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Novel Three-Phase PLL with Per Phase Grid Angle Tracking Capability for Shunt-Connected Solar Microinverter

Novel Three-Phase PLL with Per Phase Grid Angle Tracking Cap...

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IEEE Energy Conversion Congress and Exposition, ECCE

作者： Roshan Varadharajan Avinash Dornala Kangbeen Lee Woongkul Lee Department of Electrical and Computer Engineering Michigan State University East Lansing MI Elmore Family School of Electrical and Computer Engineering Purdue University West Lafayette IN

ISBN: (数字)9798350376067

ISBN: (纸本)9798350376074

A shunt-connected solar microinverter can effectively mitigate the high starting current of induction motors and seamlessly redirect the energy source back to the power grid with grid synchronization. However, external disturbances in the power grid can influence the motor starting operation, and it becomes a predominant issue for grid-connected systems to act independently of these scenarios. The frequent grid faults, voltage sags, and swells can negatively affect the durability of the motor. This paper proposes a novel three-phase phase-locked loop (PLL) that can track the grid angle of each phase independently in faulty grid conditions. The existing DQ-PLL is modified with the proposed PLL structure for the microinverter application. This can help the line-connected IM system tackle the unbalanced grid scenario and run the induction motor efficiently with minimal impact from the grid faults.

关键词： Tracking loops Vehicle-to-grid Irrigation Induction motors Power quality Fasteners Power grids Topology Synchronization Phase locked loops

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Look-Up Table based Neural Network Hardware

arXiv

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arXiv 2024年

作者： Sen, Ovishake Ogbogu, Chukwufumnanya Dehghanzadeh, Peyman Doppa, Janardhan Rao Bhunia, Swarup Pande, Partha Pratim Chatterjee, Baibhab Department of Electrical and Computer Engineering University of Florida Gainesville United States School of Electrical Engineering & Computer Science Washington State University Pullman United States

Traditional digital implementations of neural accelerators are limited by high power and area overheads, while analog and non-CMOS implementations suffer from noise, device mismatch, and reliability issues. This paper introduces a CMOS Look-Up Table (LUT)-based Neural Accelerator (LUT-NA) framework that reduces the power, latency, and area consumption of traditional digital accelerators through precomputed, faster look-ups while avoiding noise and mismatch of analog circuits. To solve the scalability issues of conventional LUT-based computation, we split the high-precision multiply and accumulate (MAC) operations into lower-precision MACs using a divide-and-conquer-based approach. We show that LUT-NA achieves up to 29.54× lower area with 3.34× lower energy per inference task than traditional LUT-based techniques and up to 1.23× lower area with 1.80× lower energy per inference task than conventional digital MAC-based techniques (Wallace Tree/Array Multipliers) without retraining and without affecting accuracy, even on lottery ticket pruned (LTP) models that already reduce the number of required MAC operations by up to 98%. Finally, we introduce mixed precision analysis in LUT-NA framework for various LTP models (VGG11, VGG19, Resnet18, Resnet34, GoogleNet) that achieved up to 32.22×-50.95× lower area across models with 3.68×-6.25× lower energy per inference than traditional LUT-based techniques, and up to 1.35×-2.14× lower area requirement with 1.99×-3.38× lower energy per inference across models as compared to conventional digital MAC-based techniques with ∼1% accuracy loss. Copyright © 2024, The Authors. All rights reserved.

关键词： CMOS integrated circuits

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Detection of Chronic Myelogenous Leukemia Applying Support Vector Machine and Feature Extraction 7

Detection of Chronic Myelogenous Leukemia Applying Support V...

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7th International Conference on Advances in Biomedical engineering, ICABME 2023

作者： MacAtol, Yannis Belle L. Geronimo, Sophia Vera S. Hortinela, Carlos C. Gomez, Marineil C. Tongol, Renato P. Fausto, Janette C. School of Electrical Electronics and Computer Engineering Mapùa University Intramuros Manila Philippines School of Chemical Biological and Materials Engineering and Sciences Mapùa University Intramuros Manila Philippines Bocaue Specialists Medical Center Department of Surgery Bulacan Bocaue Philippines

ISBN: (纸本)9798350325850

This paper employs image processing and artificial intelligence to detect Chronic Myelogenous Leukemia (CML) in peripheral blood smear images. The study's objective is to create a prototype that uses Otsu's Thresholding and SVM to create a device that can detect CML. Otsu's thresholding and Support Vector Machine Classification are the algorithms used for image processing and artificial intelligence. Roundness, Convexity, Solidity, and Eccentricity were the features that were extracted from the peripheral blood smear image. The results obtained show that 75 out of 78 samples were correctly classified. The system's overall accuracy via the confusion matrix is 96%. Hence, it can be concluded that Otsu's Thresholding, Feature Extraction, and SVM Classifier are algorithms that can detect CML. © 2023 IEEE.

关键词： Feature extraction

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Comprehensive Exploration of Smart Cities: A Systematic Review of Benefits, Challenges, and Future Directions in Telecommunications and Urban Development

IEEE Sensors Reviews

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IEEE Sensors Reviews 2025年 2卷 228-245页

作者： Olaoluwa J. Adeleke Kim D. Jovanovich Simeon Ogunbunmi Oluwarotimi Samuel Temitope O. Kehinde Department of Electrical and Computer Engineering University of New Orleans New Orleans LA USA Department of Electrical and Computer Engineering State University of New York (SUNY) Binghamton Binghamton NY USA School of Computing and Data Science Research Centre University of Derby Derby U.K. Hong Kong Polytechnic University Hung Hom Hong Kong

Smart Cities are considered the intersection of technology and urban development, aiming to create sustainable, efficient, and citizen-centered environments using advanced tools such as the Internet of Things, artificial intelligence, and big data analytics. The major components of a smart city are smart buildings, smart transport, smart energy, smart health care, public safety and security, environmental and resource management, and smart technology. These components make the cities smart, transparent, and efficient. Information and communication technology is one of the most vital tools for modifying traditional cities into Smart Cities. Smart Cities are emerging as transformative urban ecosystems that leverage data, technology, and intelligent design to enhance sustainability, efficiency, and the quality of life for residents. Over 1,000 cities worldwide are developing or implementing smart city initiatives, with projected investments exceeding $1.5 trillion by 2025. Studies indicate Smart Cities can achieve up to 30% reductions in energy consumption and 20% improvements in public service efficiency. This paper presents a systematic review of 61 scholarly works, highlighting the benefits, challenges, and the central role of telecommunications in smart urban development. This systematic review dissects the dual nature of Smart Cities regarding their revolutionary capabilities and intrinsic challenges. The study points out important gaps in the literature, especially when it comes to long-term social effects, fair resource allocation, critical gaps in ethical governance, resource distribution policies, and their long-term implications on societal development, and ethical governance, underrepresentation of telecommunications as a central enabler, and propose future research directions to address these gaps.

关键词： Smart cities Telecommunications Internet of Things Sensors Intelligent sensors Sensor phenomena and characterization Smart grids Resource management Systematic literature review Real-time systems

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On Smooth Rényi Entropies: A Novel Information Measure, One-Shot Coding Theorems, and Asymptotic Expansions

On Smooth Rényi Entropies: A Novel Information Measure, One...

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作者： Sakai, Yuta Tan, Vincent Y. F. Department of Electronics and Computer Science Graduate School of Engineering University of Hyogo Himeji671-2280 Japan Department of Electrical and Computer Engineering Department of Mathematics National University of Singapore Singapore119077 Singapore

This study considers the unconditional smooth Rényi entropy proposed by Renner and Wolf [ASIACRYPT, 2005], the smooth conditional Rényi entropy proposed by Kuzuoka [IEEE Trans. Inf. Th., 66(3), 1674-1690, 2020], and a novel quantity which we term the conditional smooth-∗ entropy. The latter two quantities can be specialized to the first in the absence of side-information. We explore the operational roles of these smooth Rényi entropies by establishing one-shot coding theorems for several information-theoretic problems, including Campbell's source coding problem, the Arikan-Massey guessing problem, and the Bunte-Lapidoth task encoding problem. We consider these problems in cases where the errors are non-vanishing and for each problem, we consider two error formalisms: the average and maximum error criteria, where the averaging and maximization are taken with respect to the side-information. Using the one-shot coding theorems, we conclude that Kuzuoka's smooth conditional Rényi entropy and the conditional smooth-∗ entropy are the solutions to the problems involving the average and maximum error criteria, respectively. Furthermore, we examine asymptotic expansions of these entropies when the underlying source with its side-information is stationary and memoryless. Applying our asymptotic expansions to the one-shot coding theorems, we derive various fundamental limits for these problems. We show that, under non-degenerate settings, the first-order fundamental limits differ under the average and maximum error criteria. This is in contrast to a different but related setting considered by the present authors [IEEE Trans. Inf. Th., 66(12), 7565-7587, 2020], for variable-length conditional source coding allowing errors, in which the first-order terms are identical but the second-order terms are different under these error criteria. © 1963-2012 IEEE.

关键词： Signal encoding

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Categorical Databases for Mathematical Formalization of AC Optimal Power Flow

Categorical Databases for Mathematical Formalization of AC O...

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IEEE Texas Power and Energy Conference (TPEC)

作者： Masoud Barati Electrical and Computer Engineering Department Swanson School of Engineering University of Pittsburgh Pittsburgh PA USA Department of Electrical and Computer Engineering and Industrial Engineering Swanson School of Engineering University of Pittsburgh Pittsburgh PA USA

It has been decades since category theory was applied to databases. In spite of their mathematical elegance, categorical models have traditionally had difficulty representing factual data, such as integers or strings. This paper proposes a categorical dataset for power system computational models, which is used for AC Optimal Power Flows (ACOPF). In addition, categorical databases incorporate factual data using multi-sorted algebraic theories (also known as Lawvere theories) based on the set-valued functor model. In the advanced metering infrastructure of power systems, this approach is capable of handling missing information efficiently. This methodology enables constraints and queries to employ operations on data, such as multiplicative and comparative processes, thereby facilitating the integration between conventional databases and programming languages like Julia and Python’s Pypower. The demonstration illustrates how all elements of the model, including schemas, instances, and functors, can modify the schema in ACOPF instances.

关键词： computer languages Databases Computational modeling Complex networks Mathematical models Data models Power systems

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Algorithm for solving a pump-probe model for an arbitrary number of energy levels

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Physical Review E 2024年第1期110卷 015304-015304页

作者： Zifan Zhou Yael Sternfeld Jacob Scheuer Selim M. Shahriar Department of Electrical and Computer Engineering Evanston Illinois 60208 USA Department of Physics and Astronomy Ramat-Aviv Tel Aviv 69978 Israel School of Electrical Engineering Faculty of Engineering Ramat-Aviv Tel Aviv 69978 Israel Department of Physics and Astronomy Evanston Illinois 60208 USA

We describe a generalized algorithm for evaluating the steady-state solution of the density matrix equation of motion, for the pump-probe scheme, when two fields oscillating at different frequencies couple the same set of atomic transitions involving an arbitrary number of energy levels, to an arbitrary order of the harmonics of the pump-probe frequency difference. We developed a numerical approach and a symbolic approach for this algorithm. We have verified that both approaches yield the same result for all cases studied, but require different computation time. The results are further validated by comparing them with the analytical solution of a two-level system to first order. We have also used both models to produce results up to the third order in the pump-probe frequency difference, for two-level systems, and up to first order for three- and four-level systems. In addition, we have used this model to determine accurately, the gain profile for a self-pumped Raman laser, for a system involving 16 Zeeman sublevels in the D1 manifold of Rb87 atoms. We have also used this model to determine the behavior of a single-pumped superluminal laser. In many situations involving the applications of multiple laser fields to atoms with many energy levels, one often makes the approximation that each field couples only one transition, because of the difficulty encountered in accounting for the effect of another field coupling the same transition but with a large detuning. The use of the algorithm presented here would eliminate the need for making such approximations, thus improving the accuracy of numerical calculations for such schemes.

关键词： Gain properties of lasers Nonlinear optics Optics & lasers Raman lasers

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E-commerce Scheme Based on Proxy t-out-of-n Oblivious Signature

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International Journal of Network Security 2024年第5期26卷 851-860页

作者： Chen, Jingyu Gong, Linming Ma, Xiangxiang Wang, Daoshun The Shaanxi Key Laboratory of Clothing Intelligence School of Computer Science Xi’an Polytechinic University Xi’an710048 China State and Local Joint Engineering Research Center for Advanced Networking and Intelligent Information Services School of Computer Science Xi’an Polytechnic University Shaanxi Xi’an710048 China Department of Computer Science and Technology Tsinghua University Beijing100084 China No. 58 Shan-gu Road Lintong Xi’an710600 China

With the development of the internet and the demand for online shopping, intelligent online shopping systems have received widespread attention in recent years. However, existing online shopping systems’ security and privacy issues have not been well addressed. This article proposes a shopping scheme based on proxy t-out-of-n oblivious signatures, which uses t-out-of-n oblivious signature technology to ensure that users select multiple messages from a predetermined set of messages, ensuring the legality and privacy of the selection while using proxy signature technology to provide the attribute of signature unforgeability. We have analyzed the correctness of the proposed scheme and demonstrated its security in terms of integrity, unforgeability, confidentiality of selected messages, selection restriction, non-repetitive, verifiability, distinguishability, non-repudiation, and prevention of abuse. Our scheme has lower computational and communication costs than other oblivious signature schemes. In addition, the privacy-preserving multi-choice shopping scheme we propose enables users to shop more securely and conveniently. © (2024), (International Journal of Network Security). All rights reserved.

关键词： Differential privacy

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