Results 61 to 70 of about 5,763,393 (289)
Analysis on GNSS Common View and Precise Point Positioning Time Transfer: BDS-3/Galileo/GPS
Remote SensingThe International Bureau of Weights and Measures (BIPM) currently mainly uses GPS time transfer for the calculation of UTC. In order to enhance the reliability of the time links, the common-view (CV) and Precise Point Positioning (PPP) time transfer ...
Meng Wang +6 more
doaj +1 more source
Time prediction model of subway transfer [PDF]
SpringerPlus, 2016 Walking time prediction aims to deduce waiting time and travel time for passengers and provide a quantitative basis for the subway schedule management. This model is founded based on transfer passenger flow and type of pedestrian facilities. Chaoyangmen station in Beijing was taken as the learning set to obtain the relationship between transfer walking
Zhou, Yuyang +3 more
openaire +2 more sources
Comparison of VLBI, TV and traveling clock techniques for time transfer [PDF]
, 1982 A three part experiment was conducted to develop and compare time transfer techniques. The experiment consisted of (1) a very long baseline interferometer (VLBI), (2) a high precision portable clock time transfer system between the two sites, and (3) a ...
Angerhofer, P. E. +7 more
core +1 more source
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
PPP time transfer using an adaptive clock constraint model
Geo-spatial Information ScienceIn the processing of Precise Point Positioning (PPP) data, the receiver clock is approached with nearly infinite uncertainty, rendering it difficult to fulfill the requirements of high-precision time frequency applications.
Jinyang Han +4 more
doaj +1 more source
Transferring Route Plan Over Time
, 2011 Travelling salesman problem (TSP) is a combinational optimization problem and solution approaches have been applied many real world problems. Pure TSP assumes the cities to visit are fixed in time and thus solutions are created to find shortest path according to these point. But some of the points are canceled to visit in time.
Kocer B., Arslan A.
openaire +2 more sources
Time delay and integration detectors using charge transfer devices [PDF]
, 1981 An imaging system comprises a multi-channel matrix array of CCD devices wherein a number of sensor cells (pixels) in each channel are subdivided and operated in discrete intercoupled groups of subarrays with a readout CCD shift register terminating each ...
Mccann, D. H. +2 more
core +1 more source
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
LEO-Enhanced Multi-GNSS Real-Time PPP Time Transfer
Remote SensingGNSS Precise Point Positioning (PPP) technology has been applied to the time transfer for a long time, enabling time synchronization between two arbitrary stations on a global scale.
Wei Xie +5 more
doaj +1 more source
Optical two-tone time transfer
Physical Review AppliedSubpicosecond time synchronization can enable future optical timekeeping networks [F. Riehle, Nat. Photonics 11 (1), 25 (2017)], including coherent phased array radar imaging at gigahertz levels [Collaboration, Event Horizon Telescope, Astrophys. J. Lett.
Jonathan D. Roslund +7 more
openaire +2 more sources