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Peer reviewe

Experimental evaluation in wireless communications

This editorial sums up relevant topics on the assessment of wireless communication systems covered by the especial issue entitled "Experimental Evaluation in Wireless Communications". The topics include practical aspects on the implementation of distributed asynchronous non-linear kernel methods over wireless sensor networks; localization methods based on the exploitation of radio-frequency identification (RFID) wireless sensors and cellular networks or on sparsity approximations; channel sounding and assessment of broadband orthogonal frequency-division multiplexing (OFDM)-based wireless systems in high-speed vehicular communications; coexistence analysis of femtocell-based and outdoor-to-indoor systems; techniques for peak-to-average power ratio (PAPR) reduction; new solutions for baseband and radio frequency (RF) hardware impairments in full-duplex wireless systems; and, finally, suitability of interference alignment for broadband indoor wireless communications

Measuring track vertical stiffness through dynamic monitoring

[EN] This paper proposes a methodology for the evaluation of the track condition by means of the measurement of the track stiffness. This magnitude is calculated from vertical acceleration data measured at the axle box of trains during their normal operation. From the corresponding vertical acceleration spectra, the dominant vibration frequencies for each track stretch are identified and the combined stiffness is then determined. Then the stiffness without the contribution of the rail is calculated. The results obtained for a High Speed ballasted track in several track stretches are within the range 120-130 kN/mm, a result consistent with direct stiffness measurements taken during previous studies. Therefore, the proposed methodology may be used to obtain a first insight to the track condition by means of a continuous measurement of the track combined stiffness. This offers an alternative to traditional stationary stiffness measuring devices and might be a useful complement to dedicated continuous monitoring vehicles.Cano, MJ.; Martínez Fernández, P.; Insa Franco, R. (2016). Measuring track vertical stiffness through dynamic monitoring. Proceedings of the Institution of Civil Engineers - Transport. 169(1). doi:10.1680/jtran.14.00081S169

Cribaje de la EPOC desde la farmacia comunitaria protocolo y resultados del estudio piloto

INTRODUCCIÓN El principal factor de riesgo de la enfermedad pulmonar obstructiva crónica (EPOC) es el hábito tabáquico, aunque existen otros factores secundarios. Para realizar el diagnóstico de la EPOC y la cuantificación de su gravedad es indispensable una espirometría. El estudio IBERPOC demostró una prevalencia de EPOC del 9,1% en la población española entre 40 y 70 años, y estimó un infradiagnóstico del 78%. Un retraso en el diagnóstico puede comportar un deterioro irreversible de la función pulmonar, además de un elevado coste asistencial. OBJETIVOS Ensayar y analizar las posibilidades de la farmacia comunitaria para cribar, de forma precoz, la EPOC. MATERIAL Y MÉTODOS Diseño: estudio piloto, descriptivo, transversal. Emplazamiento: una farmacia comunitaria de la ciudad de Mataró (Cataluña). Material: medidor de EPOC electrónico Vitalograph® COPD-6. Criterios de selección: pacientes de ambos sexos, edad entre 25 y 70 años, sin previo diagnóstico de EPOC, fumadores, ex fumadores y/o no fumadores con sintomatología de EPOC. Intervenciones farmacéuticas: 1-Derivación directa al especialista ante resultados de EPOC, 2-Derivación al médico de AP3 ante patrones obstructivos, 3-Inclusión en el programa de deshabituación tabáquica a los pacientes fumadores que acepten participar. RESULTADOS DEL PILOTAJE Se han detectado dos nuevos casos de EPOC sin diagnostico previo. Un 24,6% de los pacientes presentan un patrón obstructivo. DISCUSIÓN La generalización de la espirometría en el ámbito de farmacia comunitaria contribuye a aumentar la detección precoz de la EPOC, mejorar la calidad de vida del paciente, reducir costes del sistema sanitario y actuar sobre la principal causa de la EPOC: el tabaco

Guía de la excursión al Triásico de la Sierra de Prades

Depto. de Geodinámica, Estratigrafía y PaleontologíaFac. de Ciencias GeológicasTRUEpu

Community-Based Monitoring in Response to Local Concerns: Creating Usable Knowledge for Water Management in Rural Land

Water resources around the world are being affected by increasing demand for human consumption as well as by industrial and agricultural use. Water quality has an impact on our quality of life, so effective monitoring provides the necessary data to allow decision makers to address critical water-related issues. This study (1) analyzes water knowledge generated by a community-based water monitoring (CBWM) network within a world heritage site; (2) discusses the extent to which monitoring responds to community concerns about water; and (3) indicates challenges in the generation of local usable knowledge. Using information generated over 6.5 years by a local monitoring network, we calculated a water quality index (WQI) and generated a time-series analysis using the breaks for additive season and trend (Bfast) algorithm. Results were grouped by specific community and institutional concerns about water. Springs under good management practices had low pollution levels, while others used for drinking and recreation had high fecal bacterial counts. Monitoring provided data about Escherichia coli counts exceeding legal limits, and about conditions of alkalinity and dissolved oxygen that represent a risk for the freshwater ecosystems. This study demonstrates how CBWM schemes can be a means of generating knowledge of water resources that can enhance the understanding of water dynamics and inform users’ decisions at local–regional levels