Results 21 to 30 of about 12,763,216 (315)
Applied Sciences, 2021 The self-comparison method is a powerful tool in the uncertainty evaluation of optical lattice clocks, but any drifts will cause a frequency offset between the two compared clock loops and thus lead to incorrect measurement result.
Chihua Zhou +4 more
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Time perception: Brain time or event time? [PDF]
Current Biology, 2001 Recent experiments show that synchronous events can appear to an observer to occur at different times. Neural processing time delays are offered as an explanation of these temporal illusions, but equating perceived time with processing time leads to some thorny philosophical problems.
Johnston, Alan, Nishida, Shin'ya
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Changing times, challenging times [PDF]
Health Expectations, 2020 Editorial ...
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Continuous-time games of timing [PDF]
Journal of Economic Theory, 2005 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vieille, Nicolas +2 more
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Improved Conflict Detection for Graph Transformation with Attributes [PDF]
Electronic Proceedings in Theoretical Computer Science, 2015 In graph transformation, a conflict describes a situation where two alternative transformations cannot be arbitrarily serialized. When enriching graphs with attributes, existing conflict detection techniques typically report a conflict whenever at least ...
Géza Kulcsár +4 more
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Applied Sciences, 2022 Accurately manipulating quantum states is a fundamental strategy for improving the performance of quantum metrology, computing, and simulation. However, the quantum state is susceptible to dephasing due to the temperature and density of the atomic ...
Feng Guo +3 more
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Development of an Interference Filter-Stabilized External-Cavity Diode Laser for Space Applications
Photonics, 2020 The National Time Service Center of China is developing a compact, highly stable, 698 nm external-cavity diode laser (ECDL) for dedicated use in a space strontium optical clock. This article presents the optical design, structural design, and preliminary
Linbo Zhang +6 more
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One Time, Two Times, or No Time? [PDF]
, 2021 Contemporary research programs in fundamental physics appear to suggest that there could be two (physical) times---or none at all. This essay articulates these possibilities in the context of quantum gravity, and in particular of cosmological models developed in an approach called `loop quantum gravity', and explains how they could nevertheless ...
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Satellite Navigation, 2021 The BeiDou Navigation Satellite System (BDS) provides global Positioning, Velocity, And Timing (PVT) services that are widely used in various areas. The BDS satellites frequently need the orbit maneuvers due to various perturbations to keep satellites in
Rui Tu +5 more
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Applied Sciences, 2020 The Zeeman shift plays an important role in the evaluation of optical lattice clocks since a strong bias magnetic field is applied for departing Zeeman sublevels and defining a quantization axis.
Xiaotong Lu +4 more
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