Results 41 to 50 of about 50,439 (173)
The success of PPPs in Poland [PDF]
The construction and provision of infrastructure services is often based on a partnership between public and private sector under a framework of Public Private Partnerships (PPPs). This type of partnership has been employed in Poland since 2009._Though public-private partnerships in Poland are a relatively young and promising investment model, they are
Joanna Wegrzyn, Michal Gluszak
openaire +3 more sources
The positioning performance of low-cost GNSS receivers in the Precise Point Positioning method [PDF]
Satellite-based positioning, which started being developed in the mid-1960s for military purposes, is now used in almost every area. For the studies single and/or double frequency receivers are used.
Mustafa Fahri Karabulut+9 more
doaj +1 more source
The report states that the presence of digital technologies in the modern world is a normal, everyday phenomenon. Modern humanity cannot imagine its life without digital technologies.
Yevhenii Yefimov
doaj +1 more source
Accuracy of Precise Point Positioning (PPP) with the use of different International GNSS Service (IGS) products and stochastic modelling [PDF]
This paper provides analyses of the accuracy and convergence time of the PPP method using GPS systems and different IGS products. The official IGS products: Final, Rapid and Ultra Rapid as well as MGEX products calculated by the CODE analysis centres ...
Damian Kiliszek+2 more
doaj +1 more source
TRIM21 and PHLDA3 negatively regulate the crosstalk between the PI3K/AKT pathway and PPP metabolism
PI3K/AKT signaling is known to regulate cancer metabolism, but whether metabolic feedback regulates the PI3K/AKT pathway is unclear. Here, we demonstrate the important reciprocal crosstalk between the PI3K/AKT signal and pentose phosphate pathway (PPP ...
Jie Cheng+17 more
semanticscholar +1 more source
Double Time Window Targeting Technique: Real time DMRG dynamics in the PPP model [PDF]
We present a generalized adaptive time-dependent density matrix renormalization group (DMRG) scheme, called the {\it double time window targeting} (DTWT) technique, which gives accurate results with nominal computational resources, within reasonable computational time.
arxiv +1 more source
Mussa Redux and Conditional PPP [PDF]
Abstract The extreme persistence of real exchange rates found commonly in post-Bretton Woods data does not hold in the preceding fixed exchange rate period, when the half-life was roughly half as large in our sample. This finding supports sticky price models as an explanation for real exchange rate behavior, extending the classic argument of Mussa ...
Paul R. Bergin, Reuven Glick, Jyh-Lin Wu
openaire +4 more sources
Investigation of Diesel Exhaust Gas Toxicity on Transient Modes
Currently, the generation of heat engines and their control systems are based on ecological indices such as the toxicity of the fulfilled gases. When designing motors, software packages are widely used.
Ivashchenko Nikolay Antonovich+3 more
doaj +1 more source
Research on GNSS positioning and applications in Poland in 2015–2018 [PDF]
This review paper presents research results on geodetic positioning and applications carried out in Poland, and related to the activities of the International Association of Geodesy (IAG) Commission 4 “Positioning and Applications” and its working groups.
Paweł Wielgosz+3 more
doaj +1 more source
The implications of ionospheric disturbances for precise GNSS positioning in Greenland
Ionospheric irregularities impair Global Navigation Satellite System (GNSS) signals and, in turn, affect the performance of GNSS positioning. Such effects are especially evident at low and high latitudes, which are currently gaining the attention of ...
Paziewski Jacek+11 more
doaj +1 more source