Results 21 to 30 of about 1,544,109 (257)
Inferring viral quasispecies spectra from 454 pyrosequencing reads
BMC Bioinformatics, 2011 Background RNA viruses infecting a host usually exist as a set of closely related sequences, referred to as quasispecies. The genomic diversity of viral quasispecies is a subject of great interest, particularly for chronic infections, since it can lead ...
Măndoiu Ion +6 more
doaj +1 more source
Precise orbit determination for BDS satellites
Satellite Navigation, 2022 Since the first pair of BeiDou satellites was deployed in 2000, China has made continuous efforts to establish its own independent BeiDou Navigation Satellite System (BDS) to provide the regional radio determination satellite service as well as regional ...
Qile Zhao +6 more
doaj +1 more source
The Steward Observatory LEO Satellite Photometric Survey [PDF]
PASP 135 095003 (2023), 2023 The Steward Observatory LEO Satellite Photometric Survey is a comprehensive observational survey to characterize the apparent brightness of the Starlink and OneWeb low Earth orbit satellites and evaluate the potential impact on astronomy. We report the results of over 16,000 independent measurements of nearly 2800 individual satellites.
arxiv +1 more source
On the virtualization and dynamic orchestration of satellite communication services [PDF]
, 2016 Key features of satellite communications such as wide-scale coverage, broadcast/multicast support and high availability, together with significant amounts of new satellite capacity coming online, anticipate new opportunities for satellite communications ...
Ahmed, Toufik +8 more
core +2 more sources
Satellite RNAs and Satellite Viruses [PDF]
Molecular Plant-Microbe Interactions®, 2016 Satellite RNAs and satellite viruses are extraviral components that can affect either the pathogenicity, the accumulation, or both of their associated viruses while themselves being dependent on the associated viruses as helper viruses for their infection. Most of these satellite RNAs are noncoding RNAs, and in many cases, have been shown to alter the
openaire +3 more sources
Satellite operators as group actions on knot concordance [PDF]
, 2015 Any knot in a solid torus, called a pattern or satellite operator, acts on knots in the 3-sphere via the satellite construction. We introduce a generalization of satellite operators which form a group (unlike traditional satellite operators), modulo a ...
Davis, Christopher W., Ray, Arunima
core +1 more source
, 2022 The fifth generation (5G) Wireless Communication systems development has brought out a paradigm shift using advanced technologies e.g., softwarization, virtualization, Massive MIMO, ultra-densification and introduction of new frequency bands. However, as the societal needs grow, and to satisfy UN's Sustainable Development Goals (SDGs), 6G and beyond ...
Kota, Sastri +34 more
openaire +6 more sources
Binary phase hopping based spreading code authentication technique
Satellite Navigation, 2021 Civil receivers of Global Navigation Satellite System (GNSS) are vulnerable to spoofing and jamming attacks due to their signal structures. The Spreading Code Authentication (SCA) technique is one of the GNSS message encryption identity authentication ...
Shenran Wang +3 more
doaj +1 more source
Post-transcriptional regulation of satellite cell quiescence by TTP-mediated mRNA decay. [PDF]
, 2015 Skeletal muscle satellite cells in their niche are quiescent and upon muscle injury, exit quiescence, proliferate to repair muscle tissue, and self-renew to replenish the satellite cell population.
Blackshear, Perry J +7 more
core +2 more sources
PPP models and performances from single- to quad-frequency BDS observations
Satellite Navigation, 2020 Nowadays, China BeiDou Navigation Satellite System (BDS) has been developed well and provided global services with highly precise positioning, navigation and timing (PNT) as well as unique short-message communication, particularly global system (BDS-3 ...
Shuanggen Jin, Ke Su
doaj +1 more source