Recerca: Enviaments recents
Ara mostrant els elements 1761-1780 de 2793
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Review of Wireless Acoustic Sensor Networks for Environmental Noise Monitoring in Smart Cities
(Journal of Sensors. 2019, 2019-05)Nowadays, more than half of the world’s population lives in urban areas. Since this proportion is expected to keep rising, the sustainable development of cities is of paramount importance to guarantee ... -
Computer-assisted assessment in open-ended activities through the analysis of traces: a proof of concept in statistics with R commander
(EURASIA Journal of Mathematics Science and Technology Education. Vol. 15, n.9 (2019), p. em1743, 2019-04-12)Open-ended tasks are common in Science, Technology, Engineering and Mathematics (STEM) education. However, as far as we know, no tools have been developed to assist in the assessment of the solution ... -
Microstructure observations during the spring 2011 STRATIPHYT-II cruise in the northeast Atlantic
(Ocean Science, 2012, Vol. 8, No 6 (Novembre), 2012-11-07)Small-scale temperature and conductivity varia-tions have been measured in the upper 100 m of the northeastAtlantic during the STRATIPHYT-II cruise (Las Palmas–Reykjavik, 6 April–3 May 2011). ... -
Construction of an Omnidirectional Parametric Loudspeaker consisting in a Spherical Distribution of Ultrasound Transducers
(Sensors. 2018, Vol. 18, No. 12, 2018-12)Omnidirectional sound sources are needed to perform a large variety of tests in acoustics. Typically, they consist of conventional speaker drivers arranged in a dodecahedron. However, the directivity ... -
From Raw Data to Meaningful Information: A Representational Approach to Cadastral Databases in Relation to Urban Planning
(Future Internet, 2014, Vol. 6, No. 4 (2014), 2014-10-24)Digesting the data hose that cities are constantly producing is complex; data is usually structured with different criteria, which makes comparative analysis of multiple cities challenging. However, the ... -
Home Sound: a GPU-based Platform for Massive Data Acquisition and Processing for Acoustic Ambient Assisted Living Applications for Behavior Monitoring
(Sensors & Transducers Journal. 2017. Vol.212, No.5 (Maig), 2017-05)Human life expectancy has grown over the last century, which has driven governments to increase the efforts on caring about the eldest population. Therefore, modern trends take advantage of latest ... -
Remote Geophysical Observatory in Antarctica with HF data transmission: a Review
(Remote Sensing. 2014, Vol.6 (Juliol), 2014-07)The geophysical observatory in the Antarctic Spanish Station Juan Carlos I (ASJI) in Livingston Island has been monitoring the magnetic field in the Antarctic region for more than fifteen years. In 2004, ... -
Remote Geophysical Observatory in Antarctica with HF data transmission: a Review
(Remote Sensing. 2014, Vol.6 (Juliol), 2014-07)The geophysical observatory in the Antarctic Spanish Station Juan Carlos I (ASJI) in Livingston Island has been monitoring the magnetic field in the Antarctic region for more than fifteen years. In 2004, ... -
Vertical and oblique ionospheric soundings performance comparison over the 12,760 km transequatorial HF link between Antarctica and Spain
(Radio Science. 2017. Vol.52, No.4 (Abril), 2017-03)This paper presents the second part of the study of the oblique sounding of a 12,760 km transequatorial ionospheric link between Livingston Island (Antarctica) and Cambrils in Spain. The study consists ... -
Vertical and oblique ionospheric soundings performance comparison over the 12,760 km transequatorial HF link between Antarctica and Spain
(Radio Science. 2017. Vol.52, No.4 (Abril), 2017-03)This paper presents the second part of the study of the oblique sounding of a 12,760 km transequatorial ionospheric link between Livingston Island (Antarctica) and Cambrils in Spain. The study consists ... -
An FPGA-Based WASN for Remote Real-Time Monitoring of Endangered Species: A Case Study on the Birdsong Recognition of Botaurus stellaris
(Sensors. 2017, Vol.17 , No. 6, 2017-06)Fast environmental variations due to climate change can cause mass decline or even extinctions of species, having a dramatic impact on the future of biodiversity. During the last decade, different ... -
Detection of Anomalous Noise Events on Low-Capacity Acoustic Nodes for Dynamic Road Traffic Noise Mapping within an Hybrid WASN
(Sensors. 2018, Vol.18, No.4, 2018-04)One of the main aspects affecting the quality of life of people living in urban and suburban areas is the continuous exposure to high road traffic noise (RTN) levels. Nowadays, thanks to Wireless Acoustic ... -
Vertical and Oblique ionospheric soundings over the long haul HF link between Antarctica and Spain
(Radio Science. 2015, Vol. 50, No.9 (Setembre), 2015-09)This paper presents a comparative study between the oblique sounding results, theInternational Telecommunication Union Rec533 HF prediction model, and the vertical sounding results of atransequatorial ... -
Vertical and Oblique ionospheric soundings over the long haul HF link between Antarctica and Spain
(Radio Science. 2015, Vol. 50, No.9 (Setembre), 2015-09)This paper presents a comparative study between the oblique sounding results, theInternational Telecommunication Union Rec533 HF prediction model, and the vertical sounding results of atransequatorial ... -
DYNAMAP - Development of low cost sensors networks for real time noise mapping
(Noise Mapping. 2016. Vol. 3, No.1, 2016-05)The Environmental Noise Directive (END) requires that regular updating of noise maps is implemented every five years to check and report about the changes occurred during the reference period. The ... -
Digital Transmission Techniques for a Long Haul HF Link: DS-SS vs. OFDM
(Radio Science. 2014, Vol.49, No.7 (Juliol), 2014-06)This paper presents two digital transmission techniques for long haul ionospheric links. Since2003 we have studied the HF link between the Antarctic Spanish Base, Juan Carlos I, and Spain; and wehave ... -
Voice quality modelling for expressive speech synthesis
(The Scientific World Journal. 2014, 2014-01)This paper presents the perceptual experiments that were carried out in order to validate the methodology of transforming expressive speech styles using voice quality (VoQ) parameters modelling, along ... -
Narrowband and Wideband Channel Sounding of an Antarctica to Spain Ionospheric Radio Link
(Remote Sensing. 2015, Vol.7, 2015-09)La Salle and Ebro Observatory have been involved in remote sensing projects in Antarctica for the last 11 years (approximately one solar cycle). The Ebro Observatory has been monitoring and analyzing ... -
Narrowband and Wideband Channel Sounding of an Antarctica to Spain Ionospheric Radio Link
(Remote Sensing. 2015, Vol.7, 2015-09)La Salle and Ebro Observatory have been involved in remote sensing projects in Antarctica for the last 11 years (approximately one solar cycle). The Ebro Observatory has been monitoring and analyzing ... -
Design of a Mobile Low-Cost Sensor Network Using Urban Buses for Real-Time Ubiquitous Noise Monitoring
(Sensors. 2016, Vol. 17 No.1, 2016-12)One of the main priorities of smart cities is improving the quality of life of their inhabitants. Traffic noise is one of the pollutant sources that causes a negative impact on the quality of life of ...