6 research outputs found
ERS-1 Orbits: The Routine Operation and High Precision Products
No full textThe objective of the paper is to summarise the experience of one year of orbit determination and prediction for the ERS-1 spacecraft: firstly, the results of the operational solutions based on S-band ranging and doppler plus fast delivery altimetry will be discussed, and subsequently, higher precision solutions using data from the global laser ranging network. Steady progress has been achieved in improving the latter, in particular through better solutions for station positions, drag, gravity and tides. The development of this offline capability has strengthened considerably the routine orbit determination, and gives high confidence that the requirements for the latter are being satisfied. The paper attempts to quantify the accuracies which have been reached in the European Space Operations Center solutions, and to answer the question: how far are we still from achieving 10 cm radial accuracy for altimeter satellites at 800 km
PPP Integrity for Advanced Applications, Including Field Trials with Galileo, Geodetic and Low-Cost Receivers, and a Preliminary Safety Analysis
No full textMultidimensional determinants of perceived work quality. Empirical evidence from Spain
No full textThrough a representative sample of 8.755 employees in 2010, and using a structural equations model (SEM), this article analyzes empirically the multidimensional determinants (direct effects) of the perceived work quality in Spain. The research concludes that the perceived work quality combines a broad set of explanatory dimensions that are linked with de workplace itself (intrinsic work quality, organization, access and inclusion, and compensations), but also with their environment and labor relations (social relations, work intensity, skills and training, and health and safety). Therefore, the public employment policies for ending the economic crisis should not only address the quality or workplace, but also meet the dimensions related to their environment and labor relations.A través de una muestra representativa para 8.755 empleados
asalariados en 2010, y utilizando un sistema de ecuaciones
estructurales, este artículo analiza empíricamente los
determinantes multidimensionales (efectos directos) de la
calidad percibida del empleo en España. La investigación
concluye que la calidad del empleo combina un amplio conjunto de dimensiones explicativas que están vinculadas con el propio puesto de trabajo (calidad intrínseca, organización, inclusión y acceso y compensación), pero también con su entorno y las relaciones laborales (relaciones sociales, intensidad del empleo, formación, y salud y seguridad en el trabajo). Por consiguiente, las políticas públicas de empleo para la salida de la crisis no solo deberían abordar la calidad del puesto de trabajo, sino también atender a las dimensiones vinculadas con su entorno y las relaciones laborales
