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6.238  Articles
1 of 625 pages  |  10  records  |  more records»
The Global Navigation Satellite System (GNSS) is used for precise positioning applications, such as surveying and geodesy. The aim of the present work is to evaluate the effectiveness of web-based relative positioning (RP) and precise point positioning (P... see more

Total electron content (TEC) fluctuation in the ionosphere is one of the main unresolved problems degrading ambiguity resolution and thus affect the reliability of satellite positioning. With regard to conditions prevailing at mid-latitudes, the impact of... see more

On May 2018 the world’s first dual-frequency Global Navigation Satellite System (GNSS) smartphone produced by Xiaomi equipped with a Broadcom BCM47755 chip was launched. It is able to receive L1/E1/ and L5/E5 signals from GPS, Galileo, Beidou, and G... see more

AbstractThe various changes that have occurred in the seaport industry have had a continuous and substantial impact on seaport activities and management in recent decades. The highly competitive and rapidly changing environment faced by business has great... see more

Photogrammetry is a relatively simple and objective instrument of evaluation that provides accurate and reproducible quantitative results, if applied rigorously, existing nowadays several protocols. The main purpose was to systematically review the utiliz... see more

This article empirically examines the role of governance in attracting FDI for a sample of ten Southern and Eastern Mediterranean countries over a 15-year period. We have approximated the attractiveness of FDI by governance through an endogenous variable ... see more

So far, three methods have been developed to determine GNSS antenna phase center variations (PCV). For this reason, and because of some problems in introducing absolute models, there are presently three models of PCV receiver antennas (relative, absolute ... see more

Aiming at the problems that huge amount of computation in ambiguity resolution with multiple epochs and high-order matrix inversion occurred in the GPS kinematic relative positioning, a modified algorithm for fast integer ambiguity resolution is proposed.... see more

Introdução: A paralisia neonatal do plexo braquial (PNPB) é uma lesão que compromete a função do membro superior. Nestes casos, órteses de membro superior são utilizadas como recursos terapêuticos para favorecer melhor posicionamento e funcionalidade ao m... see more

1 of 625 pages  |  10  records  |  more records»