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50th European Microwave Conference, EuMC 2020

作者： Rivadeneyra, Almudena Salmeron, Jose F. Rodriguez, Noel Morales, Diego P. Colella, Riccardo Chietera, Francesco P. Catarinucci, Luca University of Granada Dept. Electronics and Computer Technology Spain

ISBN: (纸本)9782874870590

The interest in the use of laser-scribing for the manufacturing of conductive patterns in electronics has been growing in the last years since this technique enables: i) inherent lithography without the use of masks, ii) a green-electronics approach, limiting the use of hazardous agents or reactives and iii) a cost-effective fabrication process with a very limited number of fabrication steps. In this contribution, we apply such a technique for obtaining RF devices on different substrates and using different precursors as either laser-activated or scribed conductive materials. The role of the laser influence on the photothermal process and the optimization of the electrical conductivity will be discussed. The techniques are applied for the realization of different samples of antennas in the UHF RFID band. The preliminary obtained results show interesting perspective for the future adoption of the laser-based production of flexible electronics RF devices. © 2021 EuMA.

关键词： Graphene

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Study of an OPTO-ASIC for a Functionally Safe Speed Sensor Using the Spatial Frequency Filter Method 28

Study of an OPTO-ASIC for a Functionally Safe Speed Sensor U...

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28th International Symposium on Design and Diagnostics of Electronic Circuits and Systems, DDECS 2025

作者： Wasinski, Frank Bonath, Werner Ricklefs, Ubbo Schwarz, Michael Borcsok, Josef University of Applied Sciences Thm Dept. of Electrical Engineering and Information Technology Giessen Germany University of Kassel Icas Institute for Computer Architecture and System Programming Kassel Germany

ISBN: (纸本)9798331528010

For decades, speed sensors based on the spatial frequency filter method have successfully proven themselves in a wide range of applications. This makes the sensor concept particularly suitable for the area of functional safety. New filter variants extend the previous measuring range to very low speeds up to standstill detection. By combining the sensor with a safety system on chip for recording and analysing measured values, a functionally safe measuring chain can be established. In order to demonstrate the variability and performance of the new filters, an optical application-specific integrated circuit was designed, which forms the basis for further extensive tests. The core components are a large number of freely configurable photodiode channels, which were realised via a redundant structure, as well as two different transimpedance amplifier concepts. In the further course of the project, the ASIC will be analysed with regard to its desired performance parameters and its robustness. © 2025 IEEE.

关键词： Functional safety Optical speed measurement OPTO-ASIC Safety SoC Spatial frequency filtering TIA

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Allocating and Routing Resources in an IoT Network with an Efficient Hybrid Optimization Approach 1

Allocating and Routing Resources in an IoT Network with an E...

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1st International Conference on Applied Artificial Intelligence and Computing, ICAAIC 2022

作者： Umar, Syed Reddy, N Linga Yadesa, Tariku Birhanu Deressa, Tadele Debisa Fikadu, Etana College of Engineering & Technology Wollega University Dept. of Computer Science Nekemte Ethiopia Dr Ysr Architecture and Fine Arts University Dept. of Computer Science Andhra Pradesh Kadapa India

ISBN: (纸本)9781665497107

technology, economics, government, people, management, and infrastructure all play a role in creating a Smart City. This indicates that a Smart City may have different communication requirements than a traditional city. The introduction of wireless technologies like WiFi, Bluetooth, ZigBee, WiMax, and 4G/LTE has made them a viable option for facilitating communication in Smart City projects. As long as they are using unlicensed interference, coexistence and band problems will continue to be a problem. Smart cities utilize the Internet of Things (IoT) to address this issue. Using hybrid optimization methods, this article tackles the problems of resource allocation and routing for the Internet of Things (IoT) by proposing the ECRR protocol (energy efficient, congestion aware resource allocation and routing). Data clustering and met heuristic algorithms are usedin the first step of the ECRR method to better distribute IoT devices and gateways throughout the network. It also proposes a method for selecting the best future route by using a queue-based swarm optimization algorithm, which enhancesthe route discovery process. With Network Simulator (NS-2), the proposed ECRR approach is simulated and compared to existing state-of-the-art methods in terms of energy consumption, node lifetime, throughput, end-to end latency, packet delivery ratio, and packet overheads. © 2022 IEEE.

关键词： Internet of things

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Blockchain-based implementation of Tradable Green Certificates

Blockchain-based implementation of Tradable Green Certificat...

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Ph.D. Research in Microelectronics and Electronics (PRIME)

作者： Antonio J. Cabrera-Gutierrez Encarnación Castillo Antonio Escobar-Molero Diego P. Morales Luis Parrilla R&D Funding Infineon Technologies AG Munich Germany Dept. of Electronics and Computer Technology University of Granada Granada Spain

Blockchain networks, given that they are not based on power-hungry proof-of-work methods, can be used in smart grid applications, in particular in the tradable green certificates use case. Thanks to the Blockchain and the smart contracts implemented, certificates can be tracked and exchanged between entities without the intervention of third parties, as well as keeping an immutable and reliable record of these certificates. This work proposes a hardware implementation of a green certificate trading system based on Blockchain, in which prosumers use hardware secure elements to implement the cryptographic tools used to interact with the Blockchain. Smart contracts help to automate these processes, deleting intermediaries, saving costs and avoiding bureaucracy.

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Survey on Use of AI/ML Algorithms in Enhancing Filesystem Performance and Efficiency

Survey on Use of AI/ML Algorithms in Enhancing Filesystem Pe...

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International Conference on Reliability, Infocom Technologies and Optimization (ICRITO) (Trends and Future Directions)

作者： Vijay Olekar Yash Patil Vishvam Pawar Shubham Pitale V R. Jaiswal Vishal Naranje Dept. of Information Technology Pune Institute of Computer Technology Pune Pune India School of Engineering Architecture and Interior Design Amity University Dubai

ISBN: (数字)9798350350357

ISBN: (纸本)9798350350364

The processing power of CPUs is increasing day by day, but systems often struggle to fully utilize this power due to the bottleneck of file access time from the disk. Over the years, various techniques have been devised to reduce I/O latency while considering various file parameters. Our survey paper aims to shed light on these techniques, efficiently comparing them and highlighting the benefits and drawbacks of each approach. For our evaluation, we have considered various file parameters, such as access time, file size, directory structure, and kernel execution flow. We have combined these parameters with a range of supervised and unsupervised machine learning algorithms, including Decision Tree, ABLE, RNN, GNN, CART, XGBoost, CNN, and more. This survey aims to highlight the use of ML/AI algorithms in the intelligent detection of file access and I/O patterns to optimize the performance of modern applications.

关键词： Surveys Machine learning algorithms Adaptive systems File systems System performance Neural networks Predictive models

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A Deep Neural Network for Detecting Broken and Scattered Power Lines in Complex Aerial Images 3

A Deep Neural Network for Detecting Broken and Scattered Pow...

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3rd International Conference on Artificial Intelligence and computer Information technology, AICIT 2024

作者： Pei, Qiugen Lai, Yuxuan Wei, Nianxing Wu, Shiting Guangdong Power Grid Co. Ltd. Enterprise Architecture and Digitalization Department Guangzhou China Guangdong University of Technology Dept. School of Computer Science Guangzhou China Guangdong Power Grid Co. Ltd. Huizhou Boluo Power Supply Bureau Huizhou China

ISBN: (纸本)9798350365443

Object detection algorithms constitute a pivotal task in the realm of computer vision, aiming to precisely identify and locate objects within images across diverse scenarios. In power systems, especially in aerial images used to detect wire breaks or scattered anomalies, object detection faces significant challenges. The distribution of wires is often uneven, appearing in different sizes in high-resolution images, and the diversity of fault shapes and sizes makes it difficult for traditional object detection models to recognize accurately. Moreover, the detection of small targets also limits the precision of traditional methods. To address the issue of diversity in fault shapes and sizes in high-resolution images, which makes it difficult for traditional object detection models to recognize accurately, first, we collect fault images of wire breaks and scatter under common scenarios, constructing the 'EWF _detection' (Electric wire fault) dataset, and propose a Pyramid Multi-scale Object Detection Model, establishing the Hybrid Spatial Attention Pooling module, HSAP, which significantly enhances the multi-scale feature extraction capability. It not only improves the model's ability to focus on key features, but also suppresses unnecessary features, enhancing the expressiveness of the network, and effectively adapting to complex backgrounds, variable lighting conditions, and different line scales and directions for transmission line detection needs. This improvement makes our model perform exceptionally well in detecting rare faults in wires and accurately locate fault positions. These achievements provide reliable technical support for wire anomaly detection in the power industry and indicate a broad prospect of application in future power scenarios. Our method not only improves detection accuracy, but also maintains efficient detection speed, reducing reliance on a large number of fault line images. These advantages make our model an important technical tool for pow

关键词： Aerial photography

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QVal: A Novel Routing Algorithm for Dragonfly Networks

QVal: A Novel Routing Algorithm for Dragonfly Networks

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IEEE International Conference on High Performance Computing and Communications (HPCC)

作者： Javier Navaridas Jose A. Pascual Dept. of Computer Architecture and Technology University of the Basque Country (UPV/EHU) Donostia-San Sebastián Spain

Dragonfly is becoming one of the networks of choice for high-performance computer systems as it offers a sweet spot in terms of cost, simplicity, performance, fault-tolerance and power. In a Dragonfly topology, compute nodes are connected to routers forming fully-connected groups, which are then connected to every other group. This provides very high connectivity with very low diameter which are desired characteristics of high performance interconnection networks. In this work, we propose Quick Valiant, a new routing algorithms for dragonfly networks which leverages Valiant routing with novel proxy selection criteria which reduce the utilization of network resources and eases congestion under pathological loads. These criteria restrict the possible proxies to these that are adjacent to either the local or the remote router, codenamed QVL and QVR, respectively. We compare our proposals with canonical routing functions and observe reductions of average path length of up to 27% and throughput improvements of up to 46% when compared with Valiant routing. Out of these criteria, restricting to local proxies only, QVL, obtains the best results in all scenarios.

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Study of an OPTO-ASIC for a Functionally Safe Speed Sensor Using the Spatial Frequency Filter Method

Study of an OPTO-ASIC for a Functionally Safe Speed Sensor U...

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IEEE Design and Diagnostics of Electronic Circuits and Systems (DDECS)

作者： Frank Wasinski Werner Bonath Ubbo Ricklefs Michael Schwarz Josef Börcsök Dept. of Electrical Engineering and Information Technology THM University of Applied Sciences Giessen Germany ICAS Institute for Computer Architecture and System Programming University of Kassel Kassel Germany

ISBN: (数字)9798331528010

ISBN: (纸本)9798331528027

关键词： Optical filters Semiconductor device measurement Optical design Stimulated emission Safety Topology System-on-chip Optical sensors Optical amplifiers Velocity measurement

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Identify Initial Nodes for Spreader in A New Diffusion Model Based on Topology (DBT) in Social Networks

Identify Initial Nodes for Spreader in A New Diffusion Model...

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International Conference on Web Research (ICWR)

作者： Ehsan Khosravi Fatemeh Yazdanifar Nikoo Salimi Hamid Ahmadi Beni Dept. of Computer Engineering Sharif University of Technology Tehran Iran Dept. of Mathematics and Computer Science Amirkabir University of Technology Tehran Iran Dept. of the Electrical Electronics Electronics and Telecommunication Engineering and Naval Architecture University of Genoa Genoa Italy Dept. of Software Engineering Azarbaijan Shahid Madani University Tabriz Iran

With the development of science and technology through social networks, the process of diffusion has become a controversial subject. In social networks, the process of diffusion is transmitted from one individual to another. The influence maximization problem, in which at least k nodes are chosen as the initial nodes of the spreader in the smallest amount of time, is one of the most critical aspects of the diffusion process. Furthermore, the initial nodes in the social network should generate the most influence on the other nodes in the network. However, in the algorithms proposed to solve the problem of influence maximization, the real-world factors which affect the influence probability in diffusion models are ignored for example, the influence probability is determined randomly. This problem causes influence maximization algorithms based on diffusion models to face the challenge of time-consuming Monte Carlo simulation. So, the RIM algorithm presented in this article which this method selects the initial nodes of the spreader according on their local reachability. In addition, Due to privacy in social networks, complete information about people such as gender, education, etc. is not available. For this reason, in the RIM algorithm, using the graph structure in social networks, the influence probability is calculated in the new DBT diffusion model. In addition, the RIM algorithm exhibits stable performance in the selection of the spreader's initial nodes in terms of influence spread, and execution time.

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Exploring the feasibility of Mobility as a Service (MaaS) for integrated passenger and freight transport through a Delphi survey

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Transportation Research Procedia 2025年 90卷 559-566页

作者： Michela Le Pira Nadia Giuffrida Rodrigo Tapia Lóránt Tavasszy Gonçalo Correia Francesco Pilla Matteo Ignaccolo Giuseppe Inturri Dept. of Civil Engineering and Architecture University of Catania Via Santa Sofia 64 95123 Catania Italy Dept. of Civil Environmental Land Construction and Chemistry Polytechnic University of Bari Via Edoardo Orabona 4 70125 Bari Italy Dept. of Transport & Planning Faculty of Civil Engineering and Geosciences Delft University of Technology Stevinweg 1 2628 CN Delft the Netherlands Dept. of Political Sciences University of Roma TRE Via Gabriello Chiabrera 199 00145 Roma Italy Faculty of Technology Policy and Management Delft University of Technology Jaffalaan 5 2628 BX Delft the Netherlands School of Architecture Planning and Environmental Policy University College Dublin Richview School of Architecture Belfield Dublin 4 Ireland Dept. of Electrical Electronic and Computer Engineering University of Catania Via Santa Sofia 64 95123 Catania Italy

This paper presents the first results of a Delphi survey aimed at eliciting experts’ opinions on possible scenarios of integration between passenger and freight transport enabled by a Mobility as a Service (MaaS) platform. Combining freight shipments with passenger trips is a promising addition to the MaaS business model that could help to reduce the number of freight vehicles and contribute to a more efficient use of passenger transport services and modes. The research objective of this paper is therefore to explore the feasibility of an extended version of MaaS including freight, called “MaaS for Passenger and Freight” (MaaS4PaF). Passenger and freight transport experts were asked to express their opinions with respect to the potential market penetration, business ecosystem, and implementation of this concept. Results allow to elaborate on opportunities and barriers, especially related to uncertain business models and the multitude of actors involved, and propose a research agenda to further investigate the feasibility and potential of MaaS for passenger and freight transport integration.

关键词： mobility on-demand last-mile logistics urban freight transport digital platforms

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