Zobrazeno 1 - 10
of 10 545
pro vyhledávání: '"C. Qi"'
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-1-2024, Pp 469-477 (2024)
The polar ice sheets serve as natural thermostats, regulating Earth’s temperatures. The Greenland Ice Sheet (GrIS), the second-largest ice sheet, is a critical indicator of climate change and global warming. Estimating the volume of supraglacial la
Externí odkaz:
https://doaj.org/article/a517663261c64336a96391186d9e2bd3
Publikováno v:
The Cryosphere, Vol 18, Pp 1053-1084 (2024)
The grain size of polycrystalline ice affects key parameters related to the dynamics of ice masses, such as the rheological and dielectric properties of terrestrial ice as well as the ice shells of icy satellites. To investigate the effect of soluble
Externí odkaz:
https://doaj.org/article/b127ac63fa07417986ec31723f42d308
Autor:
S. Fan, D. J. Prior, B. Pooley, H. Bowman, L. Davidson, D. Wallis, S. Piazolo, C. Qi, D. L. Goldsby, T. F. Hager
Publikováno v:
The Cryosphere, Vol 17, Pp 3443-3459 (2023)
Grain growth can modify the microstructure of natural ice, including the grain size and crystallographic preferred orientation (CPO). To better understand grain-growth processes and kinetics, we compared microstructural data from synthetic and natura
Externí odkaz:
https://doaj.org/article/3199e4f28a454cb9bfa0f9d09ffd7c07
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 3693-3713 (2023)
Atmospheric ammonia (NH3) is a reactive nitrogen compound that pollutes our environment and threatens public health. Monitoring the spatial and temporal variations is important for quantifying its emissions and depositions and evaluating the strategi
Externí odkaz:
https://doaj.org/article/1c34984ef3614e56a5d5c7717bf4460e
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 3059-3083 (2023)
The Geostationary Interferometric Infrared Sounder (GIIRS) on board FengYun-4 series satellites is the world's first geostationary hyperspectral infrared sounder. With hyperspectral measurement collected from a geostationary orbit covering the carbon
Externí odkaz:
https://doaj.org/article/be5f1fa520c24ab5b81b27d76465748a
Classification Weighted Deep Neural Network Based Channel Equalization for Massive MIMO-OFDM Systems
Publikováno v:
Radioengineering, Vol 31, Iss 3, Pp 346-356 (2022)
Massive multi-input multi-output (MIMO) has attracted significant interest in academia and industry, which can efficiently increase the transmission rate. However, the error rate of conventional channel equalizations in massive MIMO systems may be hi
Externí odkaz:
https://doaj.org/article/17f99eac03ef4bd2a51593220e9faa4d
Autor:
M. A. Cordiner, K. Darnell, D. Bockelée-Morvan, N. X. Roth, N. Biver, S. N. Milam, S. B. Charnley, J. Boissier, B. P. Bonev, C. Qi, J. Crovisier, A. J. Remijan
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 10, p 221 (2024)
46P/Wirtanen is a Jupiter-family comet, probably originating from the solar system’s Kuiper Belt, that now resides on a 5.4 yr elliptical orbit. During its 2018 apparition, comet 46P passed unusually close to the Earth (within 0.08 au), presenting
Externí odkaz:
https://doaj.org/article/309e8760066b4faf88007b1869bd4a72
Autor:
M. E. Monz, P. J. Hudleston, D. J. Prior, Z. Michels, S. Fan, M. Negrini, P. J. Langhorne, C. Qi
Publikováno v:
The Cryosphere, Vol 15, Pp 303-324 (2021)
Microstructures provide key insights into understanding the mechanical behavior of ice. Crystallographic preferred orientation (CPO) develops during plastic deformation as ice deforms dominantly by dislocation glide on the basal plane, modified and o
Externí odkaz:
https://doaj.org/article/0ac1ecc985bb4a21a9aab492ca5c716f
Publikováno v:
The Cryosphere, Vol 14, Pp 3875-3905 (2020)
In order to better understand ice deformation mechanisms, we document the microstructural evolution of ice with increasing strain. We include data from experiments at relatively low temperatures (−20 and −30 ∘C), where the microstructural evo
Externí odkaz:
https://doaj.org/article/3cb50feea3b148cf9b620080dbd9311a
Autor:
M. A. Cordiner, N. X. Roth, S. N. Milam, G. L. Villanueva, D. Bockelée-Morvan, A. J. Remijan, S. B. Charnley, N. Biver, D. C. Lis, C. Qi, B. P. Bonev, J. Crovisier, J. Boissier
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 59 (2023)
Gas-phase molecules in cometary atmospheres (comae) originate primarily from (1) outgassing by the nucleus, (2) sublimation of icy grains in the near-nucleus coma, and (3) coma (photo)chemical processes. However, the majority of cometary gases observ
Externí odkaz:
https://doaj.org/article/a3e7e422c943489ca2bf16f4d7ddf194