A5017589630- Advanced Mathematical Modeling in Engineering
- RFID technology advancements
- COVID-19 epidemiological studies
- Indoor and Outdoor Localization Technologies
- Antenna Design and Analysis
- Animal Disease Management and Epidemiology
- Microbial Inactivation Methods
- Stability and Controllability of Differential Equations
- Vector-Borne Animal Diseases
- Gas Dynamics and Kinetic Theory
- Viral Infections and Outbreaks Research
- Advanced Multi-Objective Optimization Algorithms
- Numerical methods for differential equations
- Spectroscopy and Laser Applications
- Mathematical and Theoretical Epidemiology and Ecology Models
- Numerical methods in inverse problems
- Innovative Microfluidic and Catalytic Techniques Innovation
- Animal Behavior and Welfare Studies
- Advanced Optimization Algorithms Research
- Food Drying and Modeling
- Matrix Theory and Algorithms
- Magnetic and Electromagnetic Effects
- Differential Equations and Boundary Problems
- Computational Fluid Dynamics and Aerodynamics
- Mathematical Biology Tumor Growth
Universidad Complutense de Madrid
2015-2024
Gas Natural Fenosa (Spain)
2013-2024
Yale University
2022
Université Gaston Berger
2021
Ziguinchor University
2021
Trinity College Dublin
2021
Université Grenoble Alpes
2016-2020
Institut polytechnique de Grenoble
2016-2020
California State University, Channel Islands
2019
Laboratoire de Conception et d'Intégration des Systèmes
2016-2017
In this paper, an RF identification sensor system is developed. It comprises passive sensors and ultra-wideband (UWB) reader. The are based on time-coded chipless tags. They consist of UWB antenna connected to a delay line that is, in turn, loaded with resistive temperature sensor. This modulates the amplitude backscattered signals as function temperature. tags identified by changing length line. operation principle design presented integration these addressed. addition, two measurement...
The continuous mutation of SARS-CoV-2 opens the possibility appearance new variants virus with important differences in its spreading characteristics, mortality rates, etc. On 14 December 2020, United Kingdom reported a potentially more contagious coronavirus variant, present that country, which is referred to as VOC 202012/01. 18 South African government also announced emergence variant scenario similar UK, 501.V2. Another milestone regarding this pandemic was beginning, vaccination...
The basic theory of operation ultra wideband radio identification systems is explained in this letter. An experimental setup based on an ultrawideband radar working as a reader proposed to measure time-coded tags. A method the Continuous Wavelet Transform developed order overcome detection problems associated low signal-to-noise ratio at receiver. Experimental results obtained with and using antenna connected delay line emulate tag are presented. good improvement achieved processing method.
This paper studies the detection of chipless frequency-coded tags. The exploits a temporal separation that allows obtaining identification (ID) with only one measurement. In this way, flexibility reading type tags is clearly improved, which highly expected for future real implementation. possible when tag presents long-time signature, longer than backscattering wave corresponding to surrounding objects. A technique based on short-time Fourier transform (STFT) used differentiate useful parts...
The disease produced by the severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) is currently one of primary concerns worldwide. Knowing zoonotic origin and that several animal species, including dogs cats, are susceptible to viral infection, it critical assess relevance pets in this pandemic. Here, we performed a large-scale study on SARS-CoV-2 serological prevalence cats Spain order elucidate their role susceptibility. Samples from animals contact with COVID-19 positive...
Vital signs detection by means of several topologies based on Doppler radar are proposed in this paper with the aim overcoming problem null detection. They phase and frequency diversity. The an alternative to I/Q demodulation double-sideband transmission. Four proposed, three them diversity one first topology is using two phase-shifted receivers. second a physical antenna displacement between A third system dynamic variation also presented, which permits work only receiver. last within 2.4...
Chipless ultra-wideband (UWB) has been proposed as a low-cost alternative for radiofrequency identification (RFID).In this paper, comprehensible theoretical introduction to time-domain operation of UWB RFID tag is described, and circuit model proposed.For commercial applications readers are demanded.To end, paper addresses the measurement time-coded chipless tags in time domain.Two different setups detect presented, one based on impulse radar (IR) other vector network analyzer (VNA).The...
Early detection of infectious diseases can substantially reduce the health and economic impacts on livestock production. Here we describe a system for monitoring animal activity based video data processing techniques, in order to detect slowdown weakening due infection with African swine fever (ASF), one most significant threats pig industry. The classifies quantifies motion-based behaviour daily sequences, allowing automated non-intrusive surveillance real-time. aim this is evaluate changes...
This paper presents the current state of mathematical modelling electrochemical behaviour lithium-ion batteries (LIBs) as they are charged and discharged. It reviews models developed by Newman co-workers, both in cases dilute moderately concentrated electrolytes indicates assumptions required for their development. Particular attention is paid to interface conditions imposed between electrolyte active electrode material; necessary derived one these, Butler–Volmer relation, order ensure...
This work describes an actively controlled frequency selective surface (FSS) to implement ultrawideband radio identification (RFID) tags. The tag exploits the change in radar cross section (RCS) of FSS, which is loaded with switching PIN diodes modulate backscattered time-domain response input ultra-wide band pulse. basic operation theory system explained. An experimental setup based on a working as reader proposed measure modulated As proof concept, battery-assisted or semipassive has been...
This work presents the designs of single-layer chipless radio frequency identification (RFID) tags based on RF-encoding particles (REP) approach. These are first realized for reading in cross-polarization resulting a higher immunity against multipath, and thus, achieving robust readings practical environment. The proposed credit-card size, with band operation ranging from 3 to 6 GHz within ultra-wideband (UWB), compliant low-cost additive fabrication techniques, plastic paper substrates. A...
The condensation produced in supersonic expansions of $\mathrm{C}{\mathrm{O}}_{2}$ is studied quantitatively combining Rayleigh and Raman scattering. cluster number density ${n}_{c}$ the mean size $\overline{N}$ are obtained for five with stagnation pressures ${P}_{0}=1--5\phantom{\rule{0.3em}{0ex}}\text{bars}$, temperature ${T}_{0}=294\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, along axial radial directions; determined from onset up to a terminal ${\overline{N}}_{\ensuremath{\infty}}$,...
This paper presents a semi-passive time-domain ultra-wideband (UWB) radio identification system. The reader consists of commercial, low-cost, and integrated impulse-radio radar. tag is composed UWB antenna loaded with transmission line, which in turn terminated PIN diode. answers to the interrogator by backscattering, modulating amplitude reflected pulses sent A 2.4-GHz downlink channel used wake up tag, order increase lifetime battery. wake-up circuit based on diode rectifier internal...
This paper presents a tag design for time-coded chipless RFID and wireless sensor applications. The consists of ultra-wide band (UWB) scattering antenna connected to delay line, which encodes the information. is measured using an system based on low-cost time-domain impulse-radio UWB radar, achieving read ranges up 1.80 meters.