Results 61 to 70 of about 5,627 (172)
ACCURACY TESTING OF THE ONLINE FREE GNSS PPP SERVICES, AS A FUNCION OF OBSERVATION DURATION AND THE ELAPSED TIME FROM MEASUREMENT EPOCH TO EPOCH OF MEASUREMENT COMPUTATION [PDF]
Geodetski Glasnik, 2011 Use of PPP has become possible since the advent of precise satellite ephemerides and clock corrections from IGS. This work represents a research in attainable accuracy and reliability of the free online GNSS services (APPS, CSRS, GAPS, magicGNSS ...
Denis Tabučić +2 more
doaj +1 more source
Space Weather, Volume 24, Issue 10, October 2026.Abstract Enhanced small‐scale ionospheric irregularities during geomagnetic storms can disturb Global Navigation Satellite System (GNSS) carrier‐phase tracking and are associated with reduced stability of ambiguity‐fixed precise point positioning (PPP‐AR), but their impact on kinematic positioning remains insufficiently quantified.
Dongsheng Zhao +7 more
wiley +1 more source
Orbits of four double stars [PDF]
Serbian Astronomical Journal, 2006 We present orbits of four double stars. Orbits of stars WDS 23516+4205 = ADS 17050 and WDS 18239+5848 = ADS 11336 were calculated for the first time. Orbits of double stars WDS 02022+3643 = ADS 1613 and WDS 18443+3940 = ADS 11635 were revised.
Novaković B., Todorović N.
doaj +1 more source
Altered photoperiod affects behaviour in a key fish grazer, the thinlip grey mullet, Chelon ramada
Journal of Fish Biology, Volume 109, Issue 4, Page 2130-2146, October 2026.Abstract The aim of this study is to address experimentally the immediate impacts of an alteration of the photoperiod, simulating an extreme artificial light pollution, on the behaviour and stress of a key grazer fish common in temperate coastal ecosystems in Europe, the thinlip grey mullet, Chelon ramada.
Caroline Roux +7 more
wiley +1 more source
Cahiers François Viète, 2016 The establishment of scientific education at the University of Coimbra was one of the most important features of the Pombal reform of the university (1772).
Fernando B. Figueiredo
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract Microbursts are thought to be a key contributor to radiation belt electron loss, with chorus waves considered a primary driver of this precipitation. However, the conditions under which chorus waves produce MeV electron loss remain poorly constrained.
Jorge Romero‐Minaya +3 more
wiley +1 more source
Alexander's Ephemerides (117), Second edition
The article discusses the nature of the Ephemerides and the relation with the rest of the tradition on ...
Bearzot, C.
core +1 more source
S/W Development of High Precesion EPHEMERIS(I) [PDF]
Journal of Astronomy and Space Sciences, 1993 We developed the S/W which calculate the Planetary and the Moon ephemerides. The ephemeris of the Solar system objects was obtained from a simultaneous numerical integration of the equations of motion for the nine planets and the Moon.
Young-Shoek Ahn +4 more
doaj
OBSERVATIONS OF THE MUTUAL PHENOMENA OF THE GALILEAN MOONS IN 2009
Odessa Astronomical Publications, 2009 The instrumental and ephemeris preparation for the photometric observations of the mutual phenomena in the system of planetary satellites was conducted within the PHEMU09 project.
N. Koshkin +10 more
doaj +1 more source
Papers in Palaeontology, Volume 12, Issue 5, September/October 2026.Abstract Dinosaur fossils from the Isle of Skye (Scotland, UK), particularly the abundant trace fossil record, provide a window into dinosaur evolution during the poorly known Middle Jurassic. Here we present a comprehensive description of the Duntulm tracksite from Cairidh Ghlumaig Bay, using aerial photography to provide whole site maps, catalogue ...
Paige E. dePolo +7 more
wiley +1 more source