A5102748008- Urbanism, Landscape, and Tourism Studies
- Historical and socio-economic studies of Spain and related regions
- Advanced DC-DC Converters
- Multilevel Inverters and Converters
- Silicon Carbide Semiconductor Technologies
- Vehicle Dynamics and Control Systems
- Soil Mechanics and Vehicle Dynamics
- Migration, Aging, and Tourism Studies
- Human-Automation Interaction and Safety
- Safety Warnings and Signage
- Traffic and Road Safety
- Mechanical Engineering and Vibrations Research
- Induction Heating and Inverter Technology
- Medieval Architecture and Archaeology
- Regional Development and Innovation
- Archaeological and Historical Studies
- Vehicle emissions and performance
- Railway Engineering and Dynamics
- High voltage insulation and dielectric phenomena
- Photonic and Optical Devices
- Advanced Measurement and Detection Methods
- Impact of Light on Environment and Health
- Migration, Health, Geopolitics, Historical Geography
- Dynamics and Control of Mechanical Systems
- Semiconductor Lasers and Optical Devices
Universidad de Oviedo
1997-2022
Foundation for Transport and Energy Research and Development
2008
Universidad Publica de Navarra
2003
The steady state operation modes and the commutation zones of a single stage, high power factor ballast are studied. design criteria to allow operate at optimum soft switching conditions given. A control circuit is also proposed. High efficiency achieved by switching. Experimental results verify theoretical study.
Pre-screening involving a number of candidate human–machine interaction solutions in three different modes (visual, auditory and haptic) for the concept 'safe speed safe distance' (SASPENCE) an advanced driver assistance system is described. This was performed simultaneously two European countries, Sweden Spain, 2004. Two groups about 30 drivers each participated two-phase procedure country. Eleven visual display alternatives information, ten distance warning 12 signals were screened by...
Abstract A new methodology for constructing stability maps (phase-plane analysis) is presented and validated application to complex multibody vehicle models implemented in Multibody Dynamics simulation software (Adams ® ). Traditional methodologies are developed be applied explicit mathematical models. Given the complexity of some special systems, particularly dynamics, simplifications needed apply this analysis technique. The main limitation when using simplified need neglect components...
We developed mouse monoclonal antibodies (Abs) against pepsinogen C with highly purified antigen isolated from gastric mucosa. The Abs were used to construct a two-site sandwich-type assay for time-resolved fluorometry as detection technique. has limit of 0.1 microgram/L and is precise (within-run day-to-day CVs < 11%). this measure in seminal plasma, breast cyst fluid, amniotic male female serum, serum patients prostate cancer, urine, tumor cytosolic extracts, milk, cerebrospinal fluid....
In sports competitions with wheeled vehicles, the resistances to movement that most affect vehicle performance are aerodynamic drag, rolling resistance, inertial forces and gravitational forces. When a powerful engine is available, resistance negligible but, in where has low-power or lack of it, significant influence on performance. The advance curve due steer angle (curve resistance) not taken into account during design process. However, as noted other research for this type vehicle, cannot...
High intensity discharge (HID) lamps are, among all artificial light sources, the most suitable when it comes of getting both high power levels and good color rendering. In low wattage metal halide (MH) lamps, acoustic resonances (AR) become a very important drawback for use frequency (HF) electronic ballasts. this paper, new HF ballast MH is presented. This provides square-waveform to lamp, avoiding appearance AR. It operates from European AC mains (230 /sub VRMS/, 50 Hz), has been designed...
RESUMEN Cabrales, situado en plenos Picos de Europa, conocio diferentes fases economicas durante la pasada centuria. Las practicas agroganaderas predominaron zona hasta comienzos del siglo XX, cuando irrumpio con fuerza una nueva forma explotacion los recursos naturales, como fue mineria. Una actividad extractiva que, pese a su elevado coste medioambiental, no mermo el atractivo este espacio montana, constituyendo hoy dia uno principales destinos turismo rural Asturias. huellas esta...
There are multiple factors that can compromise safety during driving such as the tire-road friction coefficient, an inadequate speed, or aggressive by driver, leading to dangerous situations for all users of way. It is difficult measure quantitatively level and change in it, depending, at each instant time, occur, changes adherence a puddle oil, soil wet from rain, sudden accelerations brakings, which margin available. In this paper presents methodology allows determine with it circulating...
We have demonstrated the feasibility of bidirectional dual parallel linearization technique for reduction intermodulation distortion in broadband systems at millimetre-wave frequencies. Moreover, we shown that performance can be enhanced reducing ripple level frequency responses. The offers less complexity than standard and operate higher frequencies thanks to use a single modulator which allows close control responses two signal paths.
In this paper, an advanced design of a low-cost electronic ballast with PFC for HPS lamps is presented. The inverter stage based on LCC parallel-series resonant current mode control. This control method avoids the handling any reactive energy, minimizing both switching and conduction losses. Also, performs natural power without exceeding maximum recommended by lamp manufacturer. since it desirable to implement factor correction, buck proposed. ignition process optimized because no additional...
<p>Independientemente de la existencia delimitaciones oficiales montaña asturiana, como que establece <em>Ley Agricultura Montaña</em>, o matizaciones a tal delimitación, realizada por el grupo investigación CIMA, en este trabajo nos hemos propuesto realizar una aproximación más minuciosa realidad del espacio rural asturiano para tratar diferenciar, primer término, las áreas pudieran considerarse urbanas y cabe calificar rurales y, segundo establecer dentro esas últimas...
RESUMEN Se analizan las principales transformaciones espaciales ocurridas durante los ultimos cincuenta anos en un enclave fundamental dentro de la franja periurbana Oviedo, zona comprendida entre Lugones y Posada Llanera. Tomando fotografia aerea como base para reconstruccion del paisaje, pretendemos poner manifiesto se produjo evolucion este espacio, desde paisaje partida, predominantemente agricola, al actual, caracter multifuncional. RESUME L'evolution du paysage dans espace periurbain:...
Traditionally halogen cycle lamps have been used for outdoor and industrial lighting. But actually low power are merchandise home lighting due to their size, no lumen depreciation color rendering. Normal supply equipment 50 Hz transformers. A very robust cost high frequency system based on a self-oscillating half bridge inverter is described in this paper. With respect transformer, weight size reduced significantly the same output luminous flux input power. Power factor correction carried...
In this paper, the optimum design of a LCC parallel-series inverter with resonant current mode control for 250 W high pressure sodium vapor lamps is presented. This method avoids handling any reactive energy, minimizing both switching and conduction losses. Also, performs natural power without exceeding maximum recommended by lamp manufacturer. since it desirable to implement low cost factor correction, buck PFC proposed. The ignition process optimized because no additional elements are...
In this paper, a low cost power control for LCC series-parallel inverters with resonant current mode HID lamps is presented. These kind of require controlling the supplied to lamp without exceeding maximum recommended by manufacturer. The classical method measures voltage and they are multiplied, obtaining consumption. This circuitry results very complex. Assuming regulated input DC (bus voltage) provided factor correction (PFC) stage constant efficiency inverter, consumed in can be...