Results 51 to 60 of about 75,227 (277)

Quantum GraviElectro Dynamics

Annalen der Physik, EarlyView.
The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley   +1 more source

Spatial data: from cartography to geodatabase

Geodesy and Cartography, 2017
The final goal of this paper was to fix a brief summary on the status of geographic information in Italy due to the technological steps and national regulations.
Ugo Falchi
doaj   +1 more source

Logarithmic and Strong Coupling Models in Weyl‐Type f(Q,T)$f(Q,T)$ Gravity

Annalen der Physik, EarlyView.
This work explores Weyl‐type f(Q,T) gravity using recent observational datasets — CC, Pantheon+, Union 3.0, and DESI DR2. Through MCMC analysis of logarithmic and strong coupling models, the study reveals a transition from deceleration to acceleration, quintessence‐to‐phantom dynamics, and late‐time consistency with LCDM, offering a geometry‐driven ...
Rahul Bhagat, S. K. Tripathy, B. Mishra
wiley   +1 more source

First geodetic observations using new VLBI stations ASKAP-29 and WARK12M [PDF]

, 2011
We report the results of a successful 7 hour 1.4 GHz VLBI experiment using two new stations, ASKAP-29 located in Western Australia and WARK12M located on the North Island of New Zealand.
Alexander, Blick, Bruce Stansby, Chris Phillips, Collett, Cormac Reynolds, David Collett, Dawson, Farrell, Gulyaev, Gulyaev, Hayley E. Bignall, John E. Reynolds, Johnston, Kettenis, Leonid Petrov, Mathews, Neville Palmer, Petrov, Petrov, Petrov, Randall Wayth, Ray, Schubert, Sergei Gulyaev, Shaun W. Amy, Smits, Steven J. Tingay, Tasso Tzioumis, Tim Natusch, Tingay   +30 more
core   +3 more sources

A Multifaceted Spatial Analysis of Tomb Distribution in Blemmyan Berenike (Eastern Desert of Egypt)

Archaeological Prospection, EarlyView.
ABSTRACT This study examines the spatial and visual organisation of tombs in the post–Roman Berenike located in Egypt's Eastern Desert. Archaeological surveys, remote sensing, geophysical methods, excavations and GIS‐based analyses are used for a comprehensive understanding of the spatial patterns and cultural significance behind the positions and ...
Mariusz Gwiazda, Anna Fijałkowska, Oskar Graszka, Tomasz Herbich, Michał Tyszkiewicz   +4 more
wiley   +1 more source

On the combination of altimetry and tide gauge observations in the Norwegian coastal zone

Journal of Geodetic Science
We have, using altimetry observations, investigated the nature and magnitude of variations in the local mean dynamic topography (MDT) along the Norwegian coast. Following our findings, we argue that the MDT is well approximated by the nearest observation
Mysen Eirik, Breili Kristian
doaj   +1 more source

The Skylab radar altimeter [PDF]

, 1972
A summary of the significant hardware characteristics of the S-193 altimeter experiment portion of the 1973 Skylab Mission is presented. A detailed discussion of the altimetry, oceanographic, and instrumentation technology objectives are presented along ...
Mcgoogan, J. T., Stanley, H. R.
core   +1 more source

Space-Time Reference with an Optical Link

, 2015
We describe a method for realizing a high-performance Space-Time Reference (STR) using a stable atomic clock in a precisely defined orbit and synchronizing the orbiting clock to high-accuracy atomic clocks on the ground.
Berceau, Paul, Hollberg, Leo, Kahn, Joseph M., Taylor, Michael   +3 more
core   +1 more source

Geophysical Investigations at the Artemision at Amarynthos of Euboea (Greece)

Archaeological Prospection, EarlyView.
ABSTRACT A combination of resistivity mapping and three‐dimensional electrical resistivity tomography (ERT) was used to investigate the subsurface of the sanctuary of Artemis Amarysia in Amarynthos, Euboea (Greece), an area where archaeological remains from the Bronze Age to the post‐Byzantine period are preserved.
G. N. Tsokas, P. I. Tsourlos, G. Vargemezis, T. Krapf, Th. Theurillat, C. Polydoropoulos   +5 more
wiley   +1 more source

A Nash-Hormander iteration and boundary elements for the Molodensky problem

, 2013
We investigate the numerical approximation of the nonlinear Molodensky problem, which reconstructs the surface of the earth from the gravitational potential and the gravity vector.
Costea, Adrian, Gimperlein, Heiko, Stephan, Ernst P.   +2 more
core   +1 more source