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IEEE Symposium on Radio Frequency Integrated Circuits (RFIC)

作者： Junhan Lim Wonseob Lee Seong-Mo Moon Euijin Oh Seunghun Wang Dongpil Chang Jinseok Park Satellite Payload Research Section ETRI Korea Department of Intelligent Electronics and Computer Engineering Chonnam National University Korea

ISBN: (数字)9798350359473

ISBN: (纸本)9798350359480

This paper presents a K-band CMOS power amplifier (PA) using the 65-nm CMOS process. To improve linearity, an analog predistortion linearizer using a cold-FET and a variable inductor is proposed. Unlike conventional cold-FET linearizers, which face limitations in improving amplitude-to-phase (AM-PM) distortion at high output power, the proposed linearizer compensates both AM-PM distortion and amplitude-to-amplitude (AM-AM) distortion of the PA. Especially, the linearizer has a phase-lag characteristic at medium output power and phase-lead characteristic at high output power, which compensates for AM-PM distortion of the PA up to high output power. The implemented PA achieved a peak power-added efficiency (PAE) of 34.4%, saturation output power (P sat ) of 22.1 dBm, and P 1dB of 19.44 dBm at 27 GHz. Also, AM-PM distortion of only 0.9° was achieved through the proposed linearization technique. Linear output power satisfying error vector magnitudes (EVMs) of -25 dB and -30 dB were measured at 16.5 dBm and 14.9 dBm, respectively.

关键词： Power measurement K-band Measurement uncertainty Linearization techniques Predistortion Radiofrequency integrated circuits Vectors

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Energy and cost benefits of advanced lighting technology applications in traffic light systems

Energy and cost benefits of advanced lighting technology app...

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14th Mediterranean Conference on Power Generation Transmission, Distribution and Energy Conversion (MEDPOWER 2024)

作者： Alexis Polycarpou Marios S. Georgiou Department of Electrical Computer Engineering and Informatics Frederick University Nicosia Cyprus Electromechanical Section Nicosia Municipality Nicosia Cyprus

ISBN: (数字)9781837242689

Following a pilot project, which concluded in 2016, the replacement of old energy consuming Traffic Light Systems (TLS) of Nicosia Municipality were the subject of an investigation with regards to the energy saving potential and most importantly the payback period of the investment, through presumptions. This paper presents the results obtained of the new efficient technology implementation, with regards to the energy saving that materialised in the Nicosia Municipality. Investigation is presented in an attempt to determine whether the proposed solution and calculated capital employed had the expected energy usage reduction, return on investment, and payback period. The estimated cost benefit of the installed systems compared to the actual benefits varies significantly, after factors such as maintenance and electricity costs are considered.

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Special Session: D-MATE: A Design Methodology for Connecting Automatic Test Equipment in Industry 4.0

Special Session: D-MATE: A Design Methodology for Connecting...

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Latin American Test Workshop, LATW

作者： Francesco Biondani Francesco Tosoni Nicola Dall'Ora Enrico Fraccaroli Sara Vinco Dong Seon Cheng Franco Fummi Department of Engineering for Innovation Medicine Section of Engineering and Physics University of Verona (Italy) Department of Engineering Sciences Guglielmo Marconi University Italy Department of Control and Computer Engineering Politecnico di Torino Italy

ISBN: (数字)9781665477635

ISBN: (纸本)9781665477642

With the growing presence of semiconductor devices in healthcare, automotive, and consumer electronics, Automatic Test Equipment (ATE) systems play an increasingly vital role in ensuring quality and reliability during validation. Despite their importance, ATE systems often operate in isolation from other manufacturing processes, limiting interoperability and integration potential. Consequently, fully incorporating ATE systems within the Industry 4.0 framework remains a largely unaddressed challenge. To bridge this gap, we propose adopting Open Platform Communications Unified Architecture (OPC UA), the industry de-facto standard communication protocol for machines, with an accompanying specification tailored to ATE systems. We developed and validated our information model on an advanced ATE system, demonstrating its practical application. The results showcase the successful integration of the ATE system into a fully-fledged Industrial computer engineering (ICE) laboratory demonstrator. This study validates the effectiveness of our model in a real-world scenario and highlights the significance of our integration approach within the context of Industry 4.0.

关键词： Automatic test equipment Protocols Manufacturing processes Computational modeling Semiconductor devices Medical services Fourth Industrial Revolution Reliability Standards Manufacturing automation

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ViWise: Fusing Visual and Wireless Sensing Data for Trajectory Relationship Recognition

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ACM Transactions on Internet of Things 2023年第4期4卷 1-29页

作者： Wu, Fang-Jing Lai, Sheng-Wun Sou, Sok-Ian TU Dortmund University Otto-Hahn-Str. 6 Dortmund44227 Germany Department of Computer Science and Information Engineering National Taiwan University No. 1 Section 4 Roosevelt Rd Da’an District Taipei10617 Taiwan Department of Electrical Engineering National Cheng Kung University No. 1 Daxue Rd. East Dist. Tainan701401 Taiwan

People usually form a social structure (e.g., a leader-follower, companion, or independent group) for better interactions among them and thus share similar perceptions of visible scenes and invisible wireless signals encountered while moving. Many mobility-driven applications have paid much attention to recognizing trajectory relationships among people. This work models visual and wireless data to quantify the trajectory similarity between a pair of users. We design a visual and wireless sensor fusion system, called ViWise, which incorporates the first-person video frames collected by a wearable visual device and the wireless packets broadcast by a personal mobile device for recognizing finer-grained trajectory relationships within a mobility group. When people take similar trajectories, they usually share similar visual scenes. Their wireless packets observed by ambient wireless base stations (called wireless scanners in this work) usually contain similar patterns. We model the visual characteristics of physical objects seen by a user from two perspectives: micro-scale image structure with pixel-wise features and macro-scale semantic context. However, we model characteristics of wireless packets based on the encountered wireless scanners along the user’s trajectory. Given two users’ trajectories, their trajectory characteristics behind the visible video frames and invisible wireless packets are fused together to compute the visual-wireless data similarity that quantifies the correlation between trajectories taken by them. We exploit modeled visual-wireless data similarity to recognize the social structure within user trajectories. Comprehensive experimental results in indoor and outdoor environments show that the proposed ViWise is robust in trajectory relationship recognition with an accuracy of above 90%. © 2023 Copyright held by the owner/author(s)

关键词： Object detection

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Foundry-fabricated photonic integrated circuit for flex-grid entanglement distribution

Foundry-fabricated photonic integrated circuit for flex-grid...

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CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Miloshevsky, Alexander Lu, Hsuan-Hao Cohen, Lucas M. Myilswamy, Karthik V. Fatema, Saleha Alshowkan, Muneer Weiner, Andrew M. Lukens, Joseph M. Quantum Information Science Section Computational Sciences and Engineering Division Oak Ridge National Laboratory Oak RidgeTN37831 United States School of Electrical and Computer Engineering Purdue Quantum Science and Engineering Institute Purdue University West LafayetteIN47907 United States Research Technology Office and Quantum Collaborative Arizona State University TempeAZ85287 United States

We demonstrate a silicon photonic integrated circuit fabricated through the CMOS manufacturing process, which features a bidirectionally pumped microring to achieve over 116 high-fidelity polarization entangled channels covering the entire optical C+L-band for flex-grid entanglement distribution. © Optica Publishing Group 2024

关键词： Photonic integrated circuits

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Foundry-fabricated photonic integrated circuit for flex-grid entanglement distribution

Foundry-fabricated photonic integrated circuit for flex-grid...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Silicon photonics

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Downsampling consistency correction-based quality enhancement for CNN-based light field image super-resolution

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Multimedia Tools and Applications 2024年第34期83卷 80919-80939页

作者： Chung, Kuo-Liang Hsieh, Tsung-Lun Department of Computer Science and Information Engineering National Taiwan University of Science and Technology No. 43 Section 4 Keelung Road Taipei10672 Taiwan

In recent years, numerous CNN-based light field (LF) image super-resolution (SR) methods have been developed. However, due to the downsampling inconsistency between low-resolution (LR) testing LF images and LR training LF images, they may suffer from quality degradation. To address this quality degradation issue, this paper proposes a downsampling consistency correction-based (DCC-based) quality enhancement method. Firstly, a quality-based voting strategy is introduced to identify the downsampling scheme used in the training step. Next, a cascaded Swin Transformer-based recognizer is proposed to identify the downsampled position and downsampling scheme used in the LR testing LF image, after which the proposed DCC-based method is employed to significantly improve the quality of the upsampled LF image. Comprehensive experiments have been conducted on typical LF image datasets to demonstrate the significant quality improvement achieved by our method in comparison to state-of-the-art LF SR methods. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Image enhancement

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Omega-3 in the Subjective Betterment of Mood and Sleep Disturbances Induced by Hormone Therapy in Women with Breast Cancer: A Pilot, Randomized, Double-Blinded, Placebo-Controlled Clinical Trial

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Sleep and Vigilance 2024年第1期8卷 39-47页

作者： Nourozi, Behzad Naghsh, Erfan zadeh, Sahar Esmaeil Mehrzad, Valiollah Darakhshandeh, Ali Moghaddas, Azadeh Department of Clinical Pharmacy and Pharmacy Practice Faculty of Pharmacy Isfahan University of Medical Sciences Isfahan Iran Department of Electrical Computer and Biomedical Engineering Toronto Metropolitan University Toronto Canada Department of Internal Medicine Oncology and Hematology Section Faculty of Medicine Isfahan University of Medical Sciences Isfahan Iran

Background: This study was performed to investigate the effect of omega-3 administration on the treatment of mood and sleep problem induced by menopausal complications due to hormone therapy in patients with breast cancer. Methods and Patients: A pilot, randomized, double-blinded and placebo-controlled clinical trial was designed in oncology-hematology outpatient’s clinic of Omid Hospital, Isfahan, Iran. First, 60 patients were screened by Hospital Anxiety and Depression Scale (HADS) for any non-identified baseline mood problems and then divided into either intervention group which received 2 g’ omega-3 daily for 4 weeks or placebo group which received identical supplement. Then, the patients were considered to assess by center for epidemiological studies—depression scale (CES-D), profile of mood states (POMS), and Pittsburgh sleep quality index (PSQI) questionnaires at the baseline and after 4-week follow-up. Results: The mean scores of CES-D (P = 0.002), POMS (P = 0.03), and PSQI (P = 0.04) were significantly lower in the intervention group than the control group. In the intervention group, mean scores of CES-D (P < 0.001), POMS (P < 0.001), and PSQI (P = 0.003) were significantly lower after intervention than pre-intervention. Mean changes in scores of CES-D (P = 0.01), POMS (P = 0.001), and PSQI (P = 0.02) were significantly higher in the intervention group than the control group. Conclusion: Our findings revealed that omega-3 supplementation have the potential to reduce mood problems complications induced by hormone therapy in breast cancer patients, and it could also improve sleep quality items in terms of subjective sleep quality, delay in falling asleep, sleep delay, and sleep disturbance. © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2023.

关键词： Breast cancer Mood problem Omega-3 Sleep quality

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Hajj Crowd Management Using CNN-Based Approach

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computers, Materials & Continua 2021年第2期66卷 2183-2197页

作者： Waleed Albattah Muhammad Haris Kaka Khel Shabana Habib Muhammad Islam Sheroz Khan Kushsairy Abdul Kadir Department of Information Technology College of ComputerQassim UniversityBuraydahSaudi Arabia Electronic Section Universiti Kuala Lumpur British Malaysian InstituteMalaysia Department of Electrical Engineering Onaizah CollegesSaudi Arabia Department of Electrical and Computer Engineering International Islamic UniversityMalaysia

Hajj as the Muslim holy pilgrimage,attracts millions of humans to Mecca every *** to statists,the pilgrimage has attracted close to 2.5 million pilgrims in 2019,and at its peak,it has attracted over 3 million pilgrims in *** is considered as the world’s largest human *** makes one of the main concerns with regards to managing the large crowds and ensuring that stampedes and other similar overcrowding accidents are *** paper presents a crowd management system using image classification and an alarm system for managing the millions of crowds during *** image classification system greatly relies on the appropriate dataset used to train the Convolutional neural network(CNN),which is the deep learning technique that has recently attracted the interest of the research community and industry in varying applications of image classification and speech *** core building block of CNN is is a convolutional layer obtained by the getting CNN trained with patches bearing designated features of the trainee *** algorithm is implemented,using the Conv2D layers to activate the CNN as a sequential ***,creating a 2D convolution layer having 64 filters and drop out of 0.5 makes the core of a CNN referred to as a set of *** aim is to train the CNN model with mapped image data,and to make it available for use in classifying the crowd as heavily-crowded,crowded,semi-crowded,light crowded,and *** utility of these results lies in producing appropriate signals for proving helpful in monitoring the *** pilgrims from the photos will help the authorities to determine the number of people in certain *** results demonstrate the utility of agent-based modeling for Hajj pilgrims.

关键词： Crowd management CNN approach Hajj

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Optimizing Cloud Data Centers for Environment Sustainability through Performance-Aware Virtual Machine Allocation

Optimizing Cloud Data Centers for Environment Sustainability...

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International Conference on Electronics, Materials engineering and Nano-Technology (IEMENTech)

作者： Vaneet Kumar Balkrishan Jindal Department of Computer Science and Engineering Chandigarh University Gharuan India Computer Engineering Section YCoE Punjabi University Guru Kashi Campus Talwandi Sabo India

Cloud computing faces challenging issues concerning high-energy consumption and service-level agreement (SLA) violations, particularly as the demand for computational power continues to grow, necessitating large-scale cloud data centers. Existing energy-aware approaches tend to focus on performance optimization during VM migration phases but it can be effectively maintained at VM allocation level as preprocessing. Thereby, this paper proposed Energy Efficient SLA-aware virtual machine Allocation approach using a metaheuristic Firefly algorithm (FFO-EESA). The experimental findings showcase promising outcomes in the context of dynamic workloads and varying numbers of VMs (ranging from 1 to 290) allocated on individual hosts. The proposed method’s experimental results were obtained through computer-based simulations conducted in MATLAB version 2017(a). The outcomes showed that, there was a reduction of 12.34% in migrations and a saving of 4.36% in idle hosts with the FFO-EESA approach. proposed algorithm resulted in an average energy savings of 4.39% compared to the FF and MBFD techniques.

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