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SSRN 2023年

作者： Gil García, Isabel C. Fernández-Guillamón, Ana García-Cascales, M. Socorro Molina-García, Ángel c/ Coruña km 38500 Collado Villalba Madrid28400 Spain Dept. of Applied Mechanics and Projects Engineering - E.T.S. de Ingenieros Industriales & Renewable Energy Research Institute Universidad de Castilla-La Mancha C/ De la Investigación S/N Albacete02006 Spain Department of Electronics Computer Architecture and Project Engineering Department of Automatics Electrical Engineering and Electronic Technology Universidad Politécnica de Cartagena Campus Muralla del Mar Murcia Cartagena30202 Spain

Due to the climate change, over the last decades there have been changes in the rhythm of nature. However, there is an increasing social consciousness regarding decarbonization, and governments include new policies and economic support measures for renewables. The participation of the onshore and offshore wind sectors play a central role in this scenario, expecting that more than 6000 GW will be globally installed in 2050. However, the useful life of many wind power plants is coming to their end, and thus, some countries will face in the coming years the decision of repowering, decommissioning, installing new turbines, or a combination of them. In general, such areas with the greatest wind potential are already occupied by relatively old wind turbines. Subsequently, a complex group of factors influences on the best solution decision-making: climatic, technological, environmental, social or economic. This paper proposes an optimized methodology based on multi-criteria decision-making to estimate the most appropriate solution for extending the useful-life of wind power plants. The methodology is divided into three stages: (i) data, (ii) alternatives and (iii) optimization. It was assessed with a Spanish onshore wind power plant connected to the grid. From the initial data, 11 alternatives were designed based on 10 selection factors. The results provide an optimal solution, combining both repowering and installation of new wind turbines. It would allow us to reduce the LCOE of the new wind plants installed in the European Union by more than 50%. © 2023, The Authors. All rights reserved.

关键词： Wind turbines

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Dynamic Resilient Graph Games for State-Dependent Jamming Attacks Analysis on Multi-Agent Systems

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IFAC-PapersOnLine 2020年第2期53卷 3421-3426页

作者： Yurid Nugraha Ahmet Cetinkaya Tomohisa Hayakawa Hideaki Ishii Quanyan Zhu Dept. of Systems and Control Engineering Tokyo Institute of Technology Tokyo 152-8552 Japan Information Systems Architecture Science Research Division National Institute of Informatics Tokyo 101-8430 Japan Dept. of Computer Science Tokyo Insitute of Technology Yokohama 226-8502 Japan Dept. of Electrical and Computer Engineering New York University Brooklyn NY 11201 USA

A cybersecurity problem for a multi-agent consensus problem is investigated through a dynamic game formulation. Specifically, we consider a game repeatedly played between a jamming attacker and a defender. The attacker attempts to jam the links between a number of agents to delay their consensus. On the other hand, the defender tries to maintain the connection between agents by attempting to recover some of the jammed links with the goal of achieving faster consensus. In each game, the players decide which links to attack/recover and for how long to continue doing so based on a Lyapunov-like function representing the largest difference between the states of the agents. We analyze the subgame perfect equilibrium of the game and obtain an upper bound of the consensus time that is influenced by the strategies of the players. The results are illustrated with a numerical example.

关键词： Multi-agent systems Consensus problem Game theory Cybersecurity

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Auditory models comparison for horizontal localization of concurrent speakers in adverse acoustic scenarios 23

Auditory models comparison for horizontal localization of co...

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23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019

作者： Barumerli, Roberto Almenari, Andrea Geronazzo, Michele Di Nunzio, Giorgio Maria Avanzini, Federico Dept. of Information Engineering University of Padova Italy Dept. of Architecture Design and Media Technology Aalborg University Denmark Dept. of Computer Science University of Milano Italy

ISBN: (纸本)9783939296157

This paper aims at comparing and reproducing the predictions of two public available computational auditory models for speaker localization in different simulated environments. The direction-of-arrival (DOA) of sound sources in the horizontal plane can be extracted by using binaural spatial cues from room and user acoustics. Since our predictions consider the specificity of both models at the level of peripheral processing, the proposed solution for DOA extraction also provides a common multi-conditional training for the Gaussian Mixture Model (GMM) approach. A set of acoustic simulations of adverse conditions (i.e. multi speakers or high reverberant scenarios) supports the evaluation phase on robustness of the synthetic auditory process. Our analysis reproduces two case studies from the scientific literature in order to investigate the reliability of localization predictions in the frontal horizontal plane. Finally, a newly defined acoustic scenario allows to identify differences between auditory models outcome in the entire horizontal plane. The results show a good agreement with previous literature and our machine learning approach emphasizes peculiarities of each approach for auditory peripheral processing. © 2019 Proceedings of the International Congress on Acoustics. All rights reserved.

关键词： Auditory model Binaural processing Room acoustic simulation

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On the evaluation of head-related transfer functions with probabilistic auditory models of human sound localization 23

On the evaluation of head-related transfer functions with pr...

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23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019

作者： Geronazzo, Michele Barumerli, Roberto Avanzini, Federico Dept. of Architecture Design and Media Technology Aalborg University Denmark Dept. of Information Engineering University of Padova Italy Dept. of Computer Science University of Milano Italy

ISBN: (纸本)9783939296157

Understanding spatial hearing leads to implement efficient and effective auralization rendering algorithms with headphones. Two important aspects contribute to sound localization: (i) acoustic filtering of listener body, and (ii) non-acoustic factors introduced by auditory periphery. Accordingly, head-related transfer functions (HRTFs) describe users acoustics in terms of their spatial filtering. Binaural synthesis through generic HRTFs (commonly a dummy head) is the most simple solution for an auralization framework. In this scenario, a high variability in localization tasks between subjects yields to an unreliable rendering. Listener's acoustic and perceptual characterization require HRTF modeling and auditory models predictions in order to provide an effective auralization on individual basis. Systemic comparisons of HRTF approximations and different user profiles can help to predict listener's performances. We consider a case study on both vertical and horizontal localization with different HRTFs and two probabilistic auditory models. In our analysis, spatial audio rendering with non-individual HRTFs has a special attention for its commercial relevance compared to unpractical and questionable use of individual HRTFs. © 2019 Proceedings of the International Congress on Acoustics. All rights reserved.

关键词： Auditory model Head-related transfer function Localization Non-individual HRTF

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A Preliminary Approach to Allocate Categories of Buildings into Lands based on Generative Design

A Preliminary Approach to Allocate Categories of Buildings i...

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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： Ignacio Pérez-Martínez María Martínez-Rojas J. M. Soto-Hidalgo Dept. of Electr. and Computer Engineering University of Córdoba Spain Dept. of Economics University of Málaga Spain Dept. Comput. Architecture & Comput. Technology University of Granada Spain

ISBN: (数字)9781728169323

ISBN: (纸本)9781728169330

In comparison to some other economic sectors, the productivity of workers in the construction has not increased much over the last 20 years. There are many approaches to tackle this problem, and one of them is to rethink the design process and introduce automation. In this paper, we propose a workflow that allocates houses on a plot of land. This workflow starts with GIS data and urban planning requirements and ends with a BIM model on that property. A genetic algorithm tackles the design process of allocation of houses by iterating and optimizing a parametric model. In the end, a designer chooses the final solution between the generated range. The degree of automation achieved by the algorithm will be tested by comparing the results of the algorithm with human-made designs.

关键词： Buildings Optimization Manuals Productivity Automation Urban planning Resource management

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Optimization of Massive Connections in 5G Networks for IoT 6

Optimization of Massive Connections in 5G Networks for IoT

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6th International Conference on Internet of Things: Systems, Management and Security, IOTSMS 2019

作者： Cano, Pablo H. Zapata Ramirez-Arroyo, Alejandro Valero, Francisco Luna Valenzuela-Valdes, Antonio Castillo-Valdivieso, Pedro A. Valdes, Juan Fco. Valenzuela Universidad de Málaga Dept. Lenguajes y Ciencias de la Computación Spain Universidad de Granada-CITIC Dept. of Signal Theory Spain Dept. of Architecture and Computer Technology Universidad de Granada-CITIC Spain

ISBN: (纸本)9781728129495

The expected traffic demands for the coming years requires a major technology development. Indeed, from 2017 to 2022, the global annual traffic growth is estimated to reach 220%. This annual growth leads in turn to an increase in the number of users connected to IP networks, going from 2.4 to 3.6 devices connected per person. Currently, 4G networks are capable of handling this load, but the irruption of the 5G breakthroughs, expected to be at full operation by 2020, is visible. However, 5G technologies may come along with a considerable power consumption if they are not devised properly. As a consequence, a key issue in the developing of these networks is to make them energetically sustainable. In this work, a preliminary study of the optimization of various aspects of the 5G system is presented. It addresses the configuration of the different basic parameters of the system and optimizes the power transmitted by the base stations to obtain simultaneous improvements in system capacity and its power consumption for a massive connections scenario. To the best of our knowledge, this is the very first time this type of 5G scenario is optimized with these two performance criteria. © 2019 IEEE.

关键词： 5G mobile communication systems

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Message from the SAIP, NEMI, ECRF, Journal First, and Workshops Track Chairs

Proceedings - 2021 IEEE 18th International Conference on Sof...

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Proceedings - 2021 IEEE 18th International Conference on Software architecture Companion, ICSA-C 2021 2021年 x-xi页

作者： Becker, Steffen Camara, Javier Challita, Stephanie Fehling, Christoph Jansen, Anton Kopp, Oliver Koziolek, Heiko Kruchten, Philippe Lewis, Grace A. Lilienthal, Carola Spalazzese, Romina Trubiani, Catia University of Stuttgart Software Quality and Architecture Stuttgart Germany University of York York United Kingdom University of Rennes 1 Rennes France Mercedes-Benz AG Sindelfingen Germany Philips Innovation Services Philips Eindhoven Netherlands ABB Research Ladenburg Germany University of British Columbia Electrical and Computer Engineering Canada Software Engineering Institute Carnegie Mellon University PittsburghPA United States WPS-Workplace Solutions GmbH Hamburg Germany Malmö University Dept. of Computer Science and Media Technology Malmö Sweden Gran Sasso Science Institute L'Aquila Italy

ISBN: (纸本)9781665439107

The 18th IEEE International Conference on Software architecture (ICSA 2021) solicited different types of submissions structured into the following tracks: The main Technical Track (included in the ICSA main proceedings), the Software architecture in Practice (SAIP) track, the New and Emerging Ideas (NEMI) track, the Early Career Researchers Forum (ECRF), the Journal First track, and the Workshop track (included in the companion volume of ICSA 2021 proceedings). Each of these tracks, except for the Technical Track, is presented in the following sections. © 2021 IEEE.

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Lightweight Task-Oriented Semantic Communication Empowered by Large-Scale AI Models

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IEEE Transactions on Vehicular technology 2025年

作者： Liu, Chuanhong Guo, Caili Yang, Yang Chen, Mingzhe Quek, Tony Q. S. Beijing University of Posts and Telecommunications Beijing Key Laboratory of Network System Architecture and Convergence School of Information and Communication Engineering Beijing100876 China Beijing University of Posts and Telecommunications Beijing Laboratory of Advanced Information Networks School of Information and Communication Engineering Beijing100876 China University of Miami Department of Electrical and Computer Engineering Institute for Data Science and Computing Coral GablesFL United States Singapore University of Technology and Design Dept. of Information Systems Technology and Design 487372 Singapore

Recent studies have focused on leveraging large-scale artificial intelligence (LAI) models to improve semantic representation and compression capabilities. However, the substantial computational demands of LAI models pose significant challenges for real-time communication scenarios. To address this, this paper proposes utilizing knowledge distillation (KD) techniques to extract and condense knowledge from LAI models, effectively reducing model complexity and computation latency. Nevertheless, the inherent complexity of LAI models leads to prolonged inference times during distillation, while their lack of channel awareness compromises the distillation performance. These limitations make standard KD methods unsuitable for task-oriented semantic communication scenarios. To address these issues, we propose a fast distillation method featuring a pre-stored compression mechanism that eliminates the need for repetitive inference, significantly improving efficiency. Furthermore, a channel adaptive module is incorporated to dynamically adjust the transmitted semantic information based on varying channel conditions, enhancing communication reliability and adaptability. In addition, an information bottleneck-based loss function is derived to guide the fast distillation process. Simulation results verify that the proposed scheme outperform baselines in term of task accuracy, model size, computation latency, and training data requirements. © 1967-2012 IEEE.

关键词： NP-hard

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An ARQ-Based Cooperative Relaying Scheme for 5G IoT Slice

An ARQ-Based Cooperative Relaying Scheme for 5G IoT Slice

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2019 IEEE Global Conference on Internet of Things, GCIoT 2019

作者： Otaru, Musa Ajiya, Mohammed Adinoyi, Abdulkareem Aljlayl, Mohammed Yanikomeroglu, Halim Telecommunications Services Nigerian Communications Satellite Ltd Abuja Nigeria Bayero University Department of Electrical Engineering Kano Nigeria Technology Enterprise Architecture Saudi Telecommunications Company Saudi Arabia Carleton University Dept. of Systems and Computer Engineering Ottawa Canada

ISBN: (纸本)9781728148731

We introduce a new twist to the classical automatic repeat request (ARQ)-based cooperative relaying scheme. Here, we target a 5G slice for offering internet-of-things (IoT)-inspired services. In this 5G application segment (e.g., utility or smart metering), utility sensors or devices are expected to last for decades and, operate on tight power budgets, and the system can tolerate periodic stops to check the fidelity of previous transmissions. For this scenario, we employ a service provider-deployed relay that alleviates the IoT devices of their communication burdens. The source transmits for a certain time window or period without requiring acknowledgments (ACK) from the destination. At the end of this window, the destination sends an ACK. If negative, the relay is expected to assist. Thus, the relay transmits only intermittently, in either one transmission time slot or a few time slots, using a suitably chosen higherorder modulation constellation. If no error occurs, the source continues its transmission. The numerical results show that with just a few antennas at the relay, the new scheme provides both a reduction in the number of ARQ transmissions and a superior probability of bit error compared with a reference scheme. We adopt the two-parameter Weibull fading model to evaluate the performance of the proposed scheme. © 2019 IEEE.

关键词： Internet of things

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Development of Training System and Practice Contents for Cybersecurity Education

Development of Training System and Practice Contents for Cyb...

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IIAI International Conference on Advanced Applied Informatics (IIAIAAI)

作者： Sanggyu Shin Yoichi Seto Yosuke Kasai Rituna Ka Daishi Kuroki Shinichi Toyoda Koji Hasegawa Kazuhiro Midorikawa Dept. of Applied Computer Engineering TOKAI University Hiratsuka-shi Japan Master Program of Information Systems Architecture Advanced Institute of Industrial Technology Tokyo Japan Master Program of Information Systems Architecture Advanced Institute of Industrial Technology

ISBN: (纸本)9781728126289

In this paper, we propose a cybersecurity exercise system in a virtual computer environment. The human resource development for security fields is an urgent issue because of the threat of cyber-attacks, recently, is increasing, many incidents occurring, but there is a not enough security personnel to respond. Some universities and companies are conducting education using a commercial training system on the market. However, built and operates the training system is expensive, therefore difficult to use in higher education institutions and SMEs. However, to build and operates, the training system needs high cost, thus difficult to use in higher education institutions and SMEs. For this reason, we developed the CyExec: a cybersecurity exercise system consisting of a virtual computer environment using VirtualBox and Docker. We also implemented the WebGoat that is an OSS vulnerability diagnosis and learning program on the CyExec and developed an attack and defense exercise program.

关键词： computer science education educational institutions further education security of data Educational institutions Continuing Education Data Security computer science education Network security higher education institute SUPERCONDUCTING MAGNETIC ENERGY STORAGE Security Personnel Training Functional training

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