Listar Grupo de Tecnoloxía Electrónica e Comunicacións (GTEC) por título
Mostrando ítems 190-209 de 230
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Selection of sEMG-based Configuration for a Hand Gesture Recognition System
(2024-08)[Abstract]: In recent decades, extensive research has been conducted on the analysis of Electromyography (EMG) signals, aiming to establish a novel communication pathway that utilizes the electrical activity generated ... -
Service-Learning methodology to develop Bachelor’s Thesis in Information and Computer Science Degrees
(PKP Publishing Services Network, 2024)[Abstract]: Service-Learning (SL) is a powerful methodology to acquire competences and values in Higher Education. However, there is still no widespread use in Information and Computer Science (ICS) degrees where most of ... -
Service-Learning Projects in University Degrees Based on Sustainable Development Goals: Proposals and Results
(MDPI AG, 2020-09-25)[Abstract] We present several Service-Learning projects developed considering Sustainable Development Goals to provide the students skills for the support of a sustainable society. This project begins with collecting ... -
SiDIVS: Simple Detection of Inductive Vehicle Signatures with a Multiplex Resonant Sensor
(Multidisciplinary Digital Publishing Institute, 2016)This work provides a system capable of obtaining simultaneous inductive signatures of vehicles traveling on a roadway with minimal cost. Based on Time-Division Multiplexing (TDM) with multiple oscillators, one for each ... -
Smart Pipe System for a Shipyard 4.0
(Multidisciplinary Digital Publishing Institute, 2016)[Abstract] As a result of the progressive implantation of the Industry 4.0 paradigm, many industries are experimenting a revolution that shipyards cannot ignore. Therefore, the application of the principles of Industry 4.0 ... -
Study of Machine Learning Techniques for EEG Eye State Detection
(MDPI AG, 2020-08-31)[Abstract] A comparison of different machine learning techniques for eye state identification through Electroencephalography (EEG) signals is presented in this paper. (1) Background: We extend our previous work by studying ... -
Synthesis of Multi-Radial Line Antenna for HIPERLAN
(The Institution of Engineering and Technology, 2003-08)[Abstract] We present a new antenna concept - the multi-radial travelling wave line antenna - that achieves a broadband conical radiation pattern suitable for use in multiple C-band wireless computer networks. -
Synthesis of Multiple-Pattern Planar Antenna Arrays with Single Prefixed or Jointly Optimized Amplitude Distributions
(John Wiley & Sons, Inc., 2002-01-05)[Abstract] Previous work on the generation of multiple radiation patterns by a single linear array antenna with an unchanging excitation amplitude distribution is generalized to planar arrays. The amplitude distribution ... -
Teaching and Learning IoT Cybersecurity and Vulnerability Assessment with Shodan through Practical Use Cases
(MDPI AG, 2020-05-27)[Abstract] Shodan is a search engine for exploring the Internet and thus finding connected devices. Its main use is to provide a tool for cybersecurity researchers and developers to detect vulnerable Internet-connected ... -
Testbed-Assisted Learning for Digital Communications Courses
(John Wiley & Sons, 2013-09)[Abstract] We introduce testbed-assisted learning as an effective means for teaching digital communications. Laboratory teaching activities of digital communications courses benefit very much from utilizing a hardware ... -
Time Modulated Arrays: from their Origin to Their Utilization in Wireless Communication Systems
(M D P I AG, 2017-03-14)[Abstract] Time-modulated arrays (TMAs) are electromagnetic systems whose radiated power pattern is controlled by the application of variable-width periodical pulses to the individual elements. The nonlinear nature of the ... -
Time-modulated array beamforming with periodic stair-step pulses
(Elsevier, 2020-01)[Abstract]: Time-modulated arrays (TMAs) are able to improve the side-lobe level of the radiation pattern at the fundamental mode but cannot steer the beam at such a mode towards a given direction. Beam-steering is possible ... -
Time-Modulated Arrays Controlled With Sinusoidal Pulsewidth Modulation
(Institute of Electrical and Electronics Engineers, 2020)[Abstract]: In this letter, sinusoidal pulsewidth modulation (PWM) is applied to the design of time-modulated arrays (TMAs). The array excitations are modulated using PWM-synthesized sine waveforms. This provides increased ... -
Time-Modulated Arrays With Haar Wavelets
(Institute of Electrical and Electronics Engineers, 2020-11)[Abstract]. Time-modulated arrays (TMAs) can effectively perform beamsteering over the first positive harmonic pattern by applying progressively delayed versions of stair-step approximations of a sine waveform to the antenna ... -
Time-Modulated Multibeam Phased Arrays With Periodic Nyquist Pulses
(Institute of Electrical and Electronics Engineers, 2018-12)[Abstract]: We present a single sideband time-modulated multibeam phased array governed by periodic Nyquist pulsed signals. A Nyquist pulse is a physically realizable approach to the ideal sinc function. Hence, its low-pass ... -
Time-Modulated Phased Array Controlled With Nonideal Bipolar Squared Periodic Sequences
(Institute of Electrical and Electronics Engineers, 2019-02)[Abstract]: Bipolar (±1) sequences with no zero state suit particularly well for safeguarding the switched feeding network efficiency when applied to time-modulated arrays. During the zero state of a conventional time-modulating ... -
TMA–FDA Range-Angle Beamforming With Periodic Linear-Phase Time-Modulating Waveforms
(Institute of Electrical and Electronics Engineers, 2022)[Abstract]: Frequency diverse arrays (FDAs) provide range-angle time-invariant transmit–receive beamforming, although a fine focus of their radiation patterns is costly since high-resolution mixers and phase shifters are ... -
Towards an Autonomous Industry 4.0 Warehouse: A UAV and Blockchain-Based System for Inventory and Traceability Applications in Big Data-Driven Supply Chain Management
(M D P I AG, 2019-05-25)[Abstract] Industry 4.0 has paved the way for a world where smart factories will automate and upgrade many processes through the use of some of the latest emerging technologies. One of such technologies is Unmanned Aerial ... -
Towards Next Generation Teaching, Learning, and Context-Aware Applications for Higher Education: A Review on Blockchain, IoT, Fog and Edge Computing Enabled Smart Campuses and Universities
(M D P I AG, 2019-10-23)[Abstract] Smart campuses and smart universities make use of IT infrastructure that is similar to the one required by smart cities, which take advantage of Internet of Things (IoT) and cloud computing solutions to monitor ... -
Towards Post-Quantum Blockchain: A Review on Blockchain Cryptography Resistant to Quantum Computing Attacks
(Institute of Electrical and Electronics Engineers, 2020-01-23)[Abstract] Blockchain and other Distributed Ledger Technologies (DLTs) have evolved significantly in the last years and their use has been suggested for numerous applications due to their ability to provide transparency, ...