Results 201 to 210 of about 97,106 (244)

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Enhanced Precise Point Positioning for GNSS Users

IEEE Transactions on Geoscience and Remote Sensing, 2012
This paper summarizes the main results obtained during the development of an Enhanced Precise Point Positioning (EPPP) Global Navigation Satellite Systems multifrequency user algorithm. The main innovations include the application of precise ionospheric corrections to facilitate the resolution of undifferenced carrier phase ambiguities, ambiguity ...
Juan Zornoza, José Miguel, Hernández Pajares, Manuel, Sanz Subirana, Jaume, Ramos Bosch, Pedro, Aragón Ángel, María Ángeles, Orus, R., Ochieng, W., Feng, S, Jofre, Martí, Coutinho, P, Samson, Jaron, Tossaint, Michel Mathias Maria   +11 more
openaire   +3 more sources

Lane Determination With GPS Precise Point Positioning

IEEE Transactions on Intelligent Transportation Systems, 2017
Modern intelligent transport solutions can achieve an improvement of traffic flow on motorways. With lane-specific measurements and lane-specific control, more measures are possible. Single frequency precise point positioning (PPP) is a newly developed and affordable technique to achieve an improved position accuracy compared with global positioning ...
Victor L. Knoop, Peter F. de Bakker, Christian C. J. M. Tiberius, Bart van Arem   +3 more
openaire   +3 more sources

Precise point positioning with multiple Galileo frequencies

2008 IEEE/ION Position, Location and Navigation Symposium, 2008
Precise point positioning is analysed with new ionosphere-free mixed code-carrier combinations of satellite-satellite single difference (SD) measurements. The large wavelength of 3.215 m and the low noise level of 3.76 cm of an L1-E5 linear combination enable reliable fixing of ambiguities with a sequential bootstrapping and an integer decorrelation ...
Henkel, Patrick, Günther, Christoph
openaire   +2 more sources

Precise Point Positioning for Next-Generation GNSS

2020 European Navigation Conference (ENC), 2020
Precise Point Positioning (PPP) provides accurate absolute position information without the direct need of measurements from a reference station at the user. The current challenge of GPS L1/L2-based PPP is its long convergence time of more than 20 minutes being caused by the need to estimate atmospheric parameters, and the relatively large code noise ...
openaire   +1 more source

Precise Point Positioning

2017
Since its introduction in 1997, precise point positioning (PPP ) offers an attractive alternative to differential global navigation satellite system (GNSS ) positioning. The PPP approach uses undifferenced, dual-frequency, pseudorange and carrier-phase observations along with precise satellite orbit and clock products, for standalone static or ...
Jan Kouba, François Lahaye, Pierre Tétreault   +2 more
openaire   +1 more source

Recent Developments in Precise Point Positioning

GEOMATICA, 2012
In standard Precise Point Positioning (PPP), the carrier phase ambiguities are estimated as real-valued constants, so that the carrier-phases can provide similar information as the pseudoranges. As a consequence, it can take tens of minutes to several hours for the ambiguities to converge to suitably precise values.
S. Bisnath, P. Collins
openaire   +1 more source

Precision Onboard Navigation for LEO Satellite based on Precise Point Positioning

2020 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2020
The PPP is a technique being actively researched and developed for estimating the precise position of a stationary point on the surface of the earth. Its particular features are that unlike the relative positioning method, the PPP does not require reference points and it provides the centimeter-level positioning accuracy in real-time using the precise ...
Masaya Murata, Isao Kawano, Koichi Inoue
openaire   +1 more source

Smartphone Applications for Precise Point Positioning

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2017
C.N.E.S., the French Space Agency, introduces two smartphone applications for Precise Point Positioning. The first application is a converter to RTCM format. It allows to send smartphone measurements (code, phase, Doppler) to a caster in the well-known RTCM standard.
Denis Laurichesse, Cedric Rouch, Francois-Xavier Marmet, Matthieu Pascaud   +3 more
openaire   +1 more source

Precise Point-to-Point Positioning Control of Flexible Structures

Journal of Dynamic Systems, Measurement, and Control, 1990
Control strategies to accomplish precise point-to-point positioning of flexible structures are discussed. First, the problem is formulated and solved in closed form using a linear quadratic optimal control technique for a simple system with only one rigid and one flexible mode; the resulting analytical solutions are examined in both the time and ...
S. P. Bhat, D. K. Miu
openaire   +1 more source