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发表于 2025-3-30 11:12:49
Alena Pešková,Martin Lederer,Otakar Nesvadbain education research from an ethics perspective?.• How might voices be appropriately acknowledged and represented in education research?.Echoes: Ethics and Issues of Voice in Education invites the reader to join the conversation, as it prompts reflection and discus978-94-6209-491-8
AMPLE
发表于 2025-3-30 15:44:32
The Assessment of the Temporal Evolution of Space Geodetic Terrestrial Reference Frames,the new methodology is its ability to treat individually the systematic errors of each TRF. This feature detects systematic effects that the Helmert transformation cannot. The results reveal that the new approach and the Helmert transformation show almost the same results in terms of rates of the da
addict
发表于 2025-3-30 18:34:44
Analysis Strategies for the Densification of the ICRF with VLBA Calibrator Survey Sources,ion. We find that there is a systematic effect up to 1 mas in the estimated source coordinates between a solution with fixed EOP coming from the GNSS techniques and a solution where the EOP are estimated in the Very Long Baseline Interferometry analysis. Furthermore, we discuss analysis strategies f
noxious
发表于 2025-3-30 23:32:16
Towards the Definition and Realization of a Global Absolute Gravity Reference System,of carefully observed gravity reference and comparison sites. Their gravity variations are recorded by a combination of repeated absolute gravity measurements and continuously operating superconducting gravimeters. The results of comparisons and the gravity variations of the reference stations will
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发表于 2025-3-31 02:43:59
Traceability of the Hannover FG5X-220 to the SI Units,ll and new electronics including a new rubidium oscillator. The metrological traceability to measurement units of the Système International d’unités (SI unit) is ensured by two complementary and successive approaches: the comparison of frequencies with standards of higher order and the comparison of
Meander
发表于 2025-3-31 07:52:18
Impact of Groundtrack Pattern of Double Pair Missions on the Gravity Recovery Quality: Lessons fromof such missions on the quality of gravity recovery. The investigation of pattern distribution impact on the recovery quality may lead to a better understanding of orbital parameter optimization. This study, in particular, investigates the influence of relative differences between the ascending node
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发表于 2025-3-31 09:31:48
A Posteriori De-aliasing of Ocean Tide Error in Future Double-Pair Satellite Gravity Missions,formation in terms of distribution and amplitude of ocean tide aliasing error. After least-squares (LS) spectral estimation of the tidal aliases at the derived alias periods, the aliasing error is reduced significantly.
Optimum
发表于 2025-3-31 16:29:29
A Method of Airborne Gravimetry by Combining Strapdown Inertial and New Satellite Observations via avity anomaly together with the trajectory, which is a preferred method over the cascade determination (i.e. separate estimation of trajectory and specific forces, GNSS acceleration and low-pass filtering of the merged signal). Second, we show how to incorporate the same modeling within the concept
配偶
发表于 2025-3-31 19:19:32
Tidal Spectroscopy from a Long Record of Superconducting Gravimeters in Strasbourg (France),need more than 18 year data length to be separated and finally to detect very low-frequency signals such as the monthly, semiannual or annual waves. Several examples for each of these cases are shown in our series.
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发表于 2025-3-31 22:30:40
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