Results 71 to 80 of about 121,543 (219)

Quantum Preferred Frame: Does It Really Exist?

, 2009
The idea of the preferred frame as a remedy for difficulties of the relativistic quantum mechanics in description of the non-local quantum phenomena was undertaken by such physicists as J. S. Bell and D. Bohm.
Bell J. S., Bell J. S., Bell J. S., Davies P. C. W., Hamieh S., J. Rembieliński, Jammer M., K. A. Smoliński, Reichenbach H., Schlipp P. A., Schrödinger E., Schrödinger E., Shimony A.   +12 more
core   +1 more source

Uniformly Accelerated Observer in Moyal Spacetime

, 2010
In Minkowski space, an accelerated reference frame may be defined as one that is related to an inertial frame by a sequence of instantaneous Lorentz transformations.
AB Zamolodchikov, AP Balachandran, AP Balachandran, AP Balachandran, GL Sewell, H Grosse, H Grosse, JJ Bisognano, JJ Bisognano, LCB Crispino, LD Faddeev, M Chaichian, Nirmalendu Acharyya, P Aschieri, RJ Hughes, S Doplicher, S Majid, S Takagi, S Wienberg, SA Fulling, Sachindeo Vaidya, UH Gerlach   +21 more
core   +1 more source

Work and energy in inertial and non inertial reference frames

, 2008
It is usual in introductory courses of mechanics to develop the work and energy formalism from Newton's laws. On the other hand, literature analyzes the way in which forces transform under a change of reference frame.
Alonso M., Diaz Rodolfo A., Diego A. Manjarrés, Goldstein H., Kleppner D., Rodolfo A. Diaz, William J. Herrera   +6 more
core   +1 more source

Attitude Determination Algorithms through Accelerometers, GNSS Sensors, and Gravity Vector Estimator

International Journal of Aerospace Engineering, 2018
Aircraft and spacecraft navigation precision is dependent on the measurement system for position and attitude determination. Rotation of an aircraft can be determined measuring two vectors in two different reference systems.
Raúl de Celis, Luis Cadarso
doaj   +1 more source

On reference frames in spacetime and gravitational energy in freely falling frames

, 2007
We consider the interpretation of tetrad fields as reference frames in spacetime. Reference frames may be characterized by an antisymmetric acceleration tensor, whose components are identified as the inertial accelerations of the frame (the translational
F F Faria, Hartle J B, Hehl F H, Hehl F W Bergmann P G de Sabbata V, J W Maluf, Maluf J W, Maluf J W, Mashhoon B, S C Ulhoa   +8 more
core   +1 more source

Online Handwriting Recognition Method with a Non-Inertial Reference Frame Based on the Measurement of Linear Accelerations and Differential Geometry: An Alternative to Quaternions

Micromachines
This work describes a mathematical model for handwriting devices without a specific reference surface (SRS). The research was carried out on two hypotheses: the first considers possible circular segments that could be made during execution for the ...
Griselda Stephany Abarca Jiménez, Carmen Caritina Muñoz Garnica, Mario Alfredo Reyes Barranca, Jesús Mares Carreño, Manuel Vladimir Vega Blanco, Francisco Gutiérrez Galicia   +5 more
doaj   +1 more source

Klein–Gordon Oscillator in a Topologically Nontrivial Space-Time

Advances in High Energy Physics, 2019
In this study, we analyze solutions of the wave equation for scalar particles in a space-time with nontrivial topology. Solutions for the Klein–Gordon oscillator are found considering two configurations of this space-time.
L. C. N. Santos, C. E. Mota, C. C. Barros   +2 more
doaj   +1 more source

Method to Investigate Railway Vehicles Forced Oscillations in Curves in the Inertial Reference System

Вестник Научно-исследовательского института железнодорожного транспорта, 2015
Classical procedure prescribes to examine mechanical systems motion in non-inertial reference frames moving in relation to stationary inertial frame. In the present paper there is proposed method to examine forced oscillations of railway vehicles caused ...
V. M. Kondrashov
doaj  

The Kinematic Models of the SINS and Its Errors on the SE(3) Group in the Earth-Centered Inertial Coordinate System

Sensors
In this paper, the kinematic models of the Strapdown Inertial Navigation System (SINS) and its errors on the SE(3) group in the Earth-Centered Inertial frame (ECI) are established.
Ke Fang, Tijing Cai, Bo Wang
doaj   +1 more source

An Innovative Procedure for Calibration of Strapdown Electro-Optical Sensors Onboard Unmanned Air Vehicles

Sensors, 2010
This paper presents an innovative method for estimating the attitude of airborne electro-optical cameras with respect to the onboard autonomous navigation unit.
Attilio Rispoli, Antonio Moccia, Domenico Accardo, Giancarmine Fasano   +3 more
doaj   +1 more source