Listar Artículos de revista DPIR - LIPS Aldizkari artikuluak por título
Mostrando ítems 35-54 de 65
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Generation of the site-adapted clearest-sky year of direct normal irradiance for solar concentrating technologies
Concentrating photovoltaic and thermoelectric solar facilities base their operation on collecting the direct component of solar radiation. Given that the direct beam that reaches the Earth's surface varies greatly in ... -
Gully geometry: what are we measuring?
Much of the research on (ephemeral) gully erosion comprises the determination of the geometry of these eroded channels, especially their width and depth. This is not a simple task due to uncertainty generated by the wide ... -
Hallazgo de treintaiséis nuevas estelas de Navarra
El presente estudio describe el hallazgo de 31 nuevas estelas de Navarra. -
Hydrological signatures based on event runoff coefficients in rural catchments of the Iberian Peninsula
Hydrological signatures are indices that help to describe the behavior of catchments. These indices can also be used to transfer information from gauged to ungauged catchments. In this study, different approaches were ... -
Influence of surface roughness measurement scale on radar backscattering in different agricultural soils
Soil surface roughness strongly affects the scattering of microwaves on the soil surface and determines the backscattering coefficient (σ 0 ) observed by radar sensors. Previous studies have shown important scale issues ... -
Influence of surface roughness sample size for C-band SAR backscatter applications on agricultural soils
Soil surface roughness determines the backscatter coefficient observed by radar sensors. The objective of this letter was to determine the surface roughness sample size required in synthetic aperture radar applications and ... -
Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations
Radar-based surface soil moisture retrieval has been subject of intense research during the last decades. However, several difficulties hamper the operational estimation of soil moisture based on currently available ... -
Magnesium oxide as alternative binder for unfired clay bricks manufacturing
Replacement of fired bricks by unfired ones could be an effective way to reduce the building industryenvironmental footprint: Their manufacture not only requires less energy and natural resources but alsogenerates less waste. ... -
Mathematical models to describe the volumetric shrinkage rate of red beans during drying
The present study aimed to determine the volumetric shrinkage rate of bean (Phaseolus vulgaris L.) seeds during air-drying under different conditions of air, temperature and relative humidity, and to adjust several ... -
Monitoring water vapour with GNSS during a heavy rainfall event in the Spanish Mediterranean area
The Spanish Mediterranean area is periodically affected by torrential rainfall events during autumn. In September 2012, one of these episodes took place with up to 50 mm of rain in a 1-hour period and with more than 300 ... -
Multi-criteria evaluation of topographic correction methods
In the last decades, several topographic correction methods (TOC) have been proposed, but there is not an agreement on the best method. Furthermore, different evaluation criteria have been used in the past, and there is ... -
A multi-year analysis of traffic accidents involving agricultural tractors
The agricultural sector in Spain is responsible for a high rate of accidents every year, and many of them are traffic accidents. Tractors are a relatively rare sight on roads, meaning that the incidence of accidents involving ... -
Non-destructive detection of blackspot in potatoes by Vis-NIR and SWIR hyperspectral imaging
Blackspot is a subsurface potato damage resulting from impacts during harvesting. This type of bruising represents substantial economic losses every year. As the tubers do not show external symptoms, bruise detection in ... -
On the added value of quad-pol data in a multi-temporal crop classification framework based on RADARSAT-2 imagery
Polarimetric SAR images are a rich data source for crop mapping. However, quad-pol sensors have some limitations due to their complexity, increased data rate, and reduced coverage and revisit time. The main objective of ... -
On the assimilation set-up of ASCAT soil moisture data for improving streamflow catchment simulation
Assimilation of remotely sensed surface soil moisture (SSM) data into hydrological catchment models has been identified as a means to improve stream flow simulations, but reported results vary markedly depending on the ... -
On the soil roughness parameterization problem in soil moisture retrieval of bare surfaces from synthetic aperture radar
Synthetic Aperture Radar has shown its large potential for retrieving soil moisture maps at regional scales. However, since the backscattered signal is determined by several surface characteristics, the retrieval of soil ... -
Phytochemicals determination and classification in purple and red fleshed potato tubers by analytical methods and near infrared spectroscopy
BACKGROUND: Over the last two decades, the attractive colours and shapes of pigmented tubers and the increasing concern about the relationship between nutrition and health have contributed to the expansion of their ... -
Prediction of main potato compounds by NIRS
Potato (Solanum tuberosum, L) compounds are generally determined by analytical methods including gasliquid chromatography (GLC), HPLC and UV-VIS spectrophotometry. These methods require a lot of time and are destructive. ... -
Project management in development cooperation. Non-governmental organizations
Este artículo analiza la adopción de prácticas propias de la gestión de proyectos en las ONG destinadas a la cooperación para el desarrollo, así como su influencia en la ejecución y el impacto de la aplicación de metodologías, ... -
Residual stresses with time-independent cyclic plasticity in finite element analysis of welded joints
Due to the intense concentration of heat in a reduced area when Gas Metal Arc Welding (GMAW) is used to join mechanical components, the regions near the weld bead are subjected to severe thermal cycles. Firstly, the region ...