Results 231 to 240 of about 17,055 (266)

6-Phosphogluconate dehydrogenase promotes mitochondrial fusion and immune suppression in tumor-associated monocytic suppressor cells. [PDF]

Nat Commun
Daneshmandi S, Yan Q, Gomez EC, Choi JE, Katsuta E, Gharib E, Singh PK, Higashi RM, Lane AN, Fan TW, Wang J, Repasky EA, McCarthy PL, Mohammadpour H.   +13 more
europepmc   +1 more source

Impacts of Plant Protection Products on Biodiversity: Limits of Risk Assessment and Avenues to Ground Liability. [PDF]

Risk Anal
Leenhardt S, Mamy L, Barthélémy C, Berny P, Bureau-Point E, Corio-Costet MF, Pesce S, Doussan I.   +7 more
europepmc   +1 more source

An Investigation of Real-Time Galileo/GPS Integrated Precise Kinematic Time Transfer Based on Galileo HAS Service. [PDF]

Sensors (Basel)
Xu L, Chen S, An Y, Shen P, Xiao X, Chen Q, Wei J, Chen Y, Yu Y.   +8 more
europepmc   +1 more source

The influence of local officials' promotion incentives on Public-Private Partnership project investment from a political-performance-driven perspective: Empirical evidence from China. [PDF]

PLoS One
Zhang L, Yue M, Du S, Zheng R, Zhu T, Tang B.   +5 more
europepmc   +1 more source

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Real-Time PPP Time Transfer With Ambiguity Resolution

2019 IEEE 4th Advanced Information Technology, Electronic and Automation Control Conference (IAEAC), 2019
With the development of the Real-Time Service (RTS) project, the timing users can use the real-time Precise Point Positioning (RT-PPP) technique for time transfer research. As a major participant of the RTS, the Centre National d'Etudes Spatiales (CNES) conducts PPP-WIZARD (Precise Point Positioning with Integer and Zero-difference Ambiguity Resolution
Daqian Lyu, Fangling Zeng, Xiaofeng Ouyang   +2 more
openaire   +1 more source

Instantaneous Cycle-Slip Correction for Real-Time PPP Applications

Navigation, 2010
Real-time precise point positioning (PPP) is limited to only a few applications using a moving receiver because the quality of the solution is vulnerable to interruptions in signal tracking. A loss of lock on all GPS signals simultaneously implies that users may have to wait for several minutes before again obtaining cm-level precision. To avoid such a
SIMON BANVILLE, RICHARD B. LANGLEY
openaire   +1 more source

Precise Real-Time Multi-GNSS PPP

2015
Global Navigation Satellite System (GNSS) technology has undergone enormous developments over the last three decades. The majority of PNT (Positioning, Navigation and Timing) applications are now based on GNSS. This increasing dependence on GNSS technology is acknowledged by several nations, some of which are even developing their own regional or ...
openaire   +2 more sources

Performance assessment of multi-GNSS real-time PPP over Iran

Advances in Space Research, 2017
Abstract With the advent of multi-GNSS constellations and thanks to providing the real-time precise products by IGS, multi-GNSS Real-Time PPP has been of special interest to the geodetic community. These products stream in the form of RTCM-SSR through NTRIP broadcaster.
Naser Abdi, Alireza A. Ardalan, Roohollah Karimi, Mohammad-Hadi Rezvani   +3 more
openaire   +1 more source

Performance analysis of Real Time PPP for transit of Mercury

Measurement, 2018
Abstract In recent years, Precise Point Positioning (PPP) techniques, which are alternative to relative positioning techniques, have begun to be widely used in Global Navigation Satellite System (GNSS) positioning applications. The PPP technique offers an effective solution to obtain coordinates at high accuracy with a single receiver. Real-time PPP (
ÖCALAN, Taylan, Karlitepe, F., TUNALIOĞLU, Nursu, ERDOĞAN, Bahattin   +3 more
openaire   +2 more sources

Airborne Pseudolite Distributed Positioning based on Real-time GNSS PPP

Journal of Navigation, 2019
Airborne-Pseudolite (A-PL) systems have been proposed to augment Global Navigation Satellite Systems (GNSSs) in difficult areas where GNSS-only navigation cannot be guaranteed due to signal blockages, signal jamming, etc. One of the challenges in realising such a system is to determine the coordinates of the A-PLs to a high accuracy.
Panpan Huang, Chris Rizos, Craig Roberts
openaire   +1 more source