Results 31 to 40 of about 203,301 (156)

Mechanical Impedance Matching Using a Magnetic Linear Gear

open access: yesShock and Vibration, Volume 2017, Issue 1, 2017., 2017
As part of the Fp7 Clean Sky Project, a linear magnetic gear prototype, called Z‐transmitter, for aerospace application was designed, built, and tested. It demonstrates a maximum force capacity of 4700 N at 25°C and 4500 N at 90°C. Force ratio between slow and fast stages remains constant and equal to the design value: 7.0.
Ignacio Valiente-Blanco   +5 more
wiley   +1 more source

Keyholes in MIMO‐OFDM: Train‐to‐Wayside Communications in Railway Tunnels

open access: yesWireless Communications and Mobile Computing, Volume 2017, Issue 1, 2017., 2017
One of the key challenges in railway engineering is how to provide passengers an efficient, secure, and safe service. To achieve this, operators and stakeholders demand robust and high‐capacity train‐to‐wayside broadband radio. Current radio technologies implement MIMO (Multiple‐Input Multiple‐Output) technology, whose use requires a good ...
Juan Moreno García-Loygorri   +5 more
wiley   +1 more source

Tailoring Chiral Gold Nanorods via Single‐Step Seed‐to‐Au(III) Ratio and Unlocking their Potential in Refractive Index Sensing

open access: yesAdvanced Optical Materials, Volume 13, Issue 34, December 2, 2025.
A single‐step tunable chiral growth of Au NRs with controllable circular dichrosim (CD) response is reported, and the application of narrow CD response for biosensing with superior Figures of Merit (FoM = RIS/linewidth) over conventional extinction‐based approach in sensitivity is demonstrated.
Carlos Fernández‐Lodeiro   +11 more
wiley   +1 more source

A Study of the Far Infrared Spectrum of N‐Acetyl‐D‐Glucosamine Using THz‐TDS, FTIR, and Semiempirical Quantum Chemistry Methods

open access: yesJournal of Spectroscopy, Volume 2016, Issue 1, 2016., 2016
The far infrared spectrum of N‐acetyl‐D‐glucosamine has been studied by combining THz–TDS and FTIR characterization techniques with theoretical studies based on semiempirical quantum chemistry methods. A strong spectral peak at 60 cm−1 has been identified, which constitutes the main signature of the material in the terahertz band.
Pedro Chamorro-Posada   +6 more
wiley   +1 more source

LaViCAD: Laboratorio Virtual de Comunicaciones Analógicas y Digitales [PDF]

open access: yes, 2006
En este trabajo se presenta tanto el diseño como la experimentación de un Laboratorio Virtual de Comunicaciones Analógicas y Digitales: LaViCAD. Mediante LaViCAD se pueden experimentar y verificar diferentes aplicaciones correspondientes a estas ...
Cabrera-Bean, Margarita   +5 more
core  

RNN‐DAS: A New Deep Learning Approach for Detection and Real‐Time Monitoring of Volcano‐Tectonic Events Using Distributed Acoustic Sensing

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 9, September 2025.
Abstract We present a novel Deep Learning model based on recurrent neural networks (RNNs) with long short‐term memory (LSTM) cells, designed as a real‐time volcano‐seismic signal recognition system for distributed acoustic sensing (DAS) measurements. The model was trained on an extensive database of volcano‐tectonic events derived from the co‐eruptive ...
J. Fernández‐Carabantes   +5 more
wiley   +1 more source

Weighted Least Squares Based Detail Enhanced Exposure Fusion

open access: yesInternational Scholarly Research Notices, Volume 2014, Issue 1, 2014., 2014
Many recent computational photography techniques play a significant role to avoid limitation of standard digital cameras to handle wide dynamic range of the real‐world scenes, containing brightly and poorly illuminated areas. In many of these techniques, it is often desirable to fuse details from images captured at different exposure settings, while ...
Harbinder Singh   +6 more
wiley   +1 more source

Software de simulación mediante Matlab de sistemas de comunicación móviles enfocado a la docencia [PDF]

open access: yes, 2012
Este proyecto se basa en la futura asignatura obligatoria en el Grado de Sistemas Electrónicos, Comunicaciones Móviles. Primero obtendremos conocimientos de los temas que se va a implantar y lo estudiaremos.
Ponce León, Maria Montserrat
core  

Diseño de la red FTTH del barrio La León sector Chilibulo para la empresa Arteksolution Cía. Ltda. [PDF]

open access: yes, 2020
La necesidad de contar con servicios de comunicación que requieren mayor ancho de banda como los servicios de trasmisión de datos, en tiempo real para comunicaciones streaming, ha posibilitado la demanda de conexiones fijas de internet encaminadas a ...
Morales Cañizares, Ricardo Napoleón   +1 more
core  

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