Results 71 to 80 of about 2,395,394 (337)

Conditional symmetry model as a better alternative to Symmetry Model for rater agreement measure [PDF]

open access: yes, 2004
In almost all life or social science researches, subjects are classified into categories by raters, interviewers or observers. Many approaches have been proposed by various authors for analyzing the data or the results obtained from these raters ...
Adejumo, A. O.   +2 more
core   +2 more sources

Symmetry of system and system of symmetry

open access: yesComputers & Mathematics with Applications, 1986
AbstractRelation “symmetry-system” is investigated from the point of view of the author's version of general systems theory (GST(U)). The symmetry of system is explicated in three ways: (i) in the form of the theory of groups of nonevolutionary and evolutionary system transformations and their invariants, (ii) in the form of a proof of symmetry of the ...
openaire   +2 more sources

Dressing symmetries

open access: yesCommunications in Mathematical Physics, 1992
(29 pages)
Babelon, Olivier, Bernard, Denis
openaire   +6 more sources

Generalization of Friedberg-Lee Symmetry [PDF]

open access: yes, 2008
We study the possible origin of Friedberg-Lee symmetry. First, we propose the generalized Friedberg-Lee symmetry in the potential by including the scalar fields in the field transformations, which can be broken down to the FL symmetry spontaneously.
Chao-Shang Huang   +6 more
core   +2 more sources

The Sound of Symmetry [PDF]

open access: yesThe American Mathematical Monthly, 2015
This note begins with an introduction to the inverse isospectral problem popularized by M. Kac's 1966 article in the American Mathematical Monthly, "Can one hear the shape of a drum?" Although the answer has been known for some twenty years now, many open problems remain.
Lu, Z., Rowlett, J.
openaire   +4 more sources

An approach for coherent periodogram averaging of tilt‐series data for improved contrast transfer function estimation

open access: yesFEBS Open Bio, EarlyView.
The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley   +1 more source

Exact solutions and conservation laws for the modified equal width-Burgers equation

open access: yesOpen Physics, 2018
In this paper we study the modified equal width-Burgers equation, which describes long wave propagation in nonlinear media with dispersion and dissipation.
Khalique Chaudry Masood   +1 more
doaj   +1 more source

Revival and Multiplatform Presentation of Forgotten Religious Heritage Sites in the Project Named “Sacred Past”

open access: yesDigital Presentation and Preservation of Cultural and Scientific Heritage, 2023
The objective of the paper is to shed light on the importance of the digital presentation of religious heritage and present the multimedia documentation of a chapel developed within the “Oltári Múlt” (“Sacred Past”, in Hungarian) project.
Gizella Börcsök   +8 more
doaj   +1 more source

Galactic Symmetry

open access: yes, 2022
Differences between the quantum mechanical and relativistic concepts of time observed in GPS satellites are accounted for by applying the equivalence principle to the transitioning electron of an atomic clock. This allows a differential equation of motion to be derived for the electron in the Minkowski space between electron shells.
openaire   +1 more source

Unmixing Symmetries [PDF]

open access: yesPhysical Review Letters, 2020
The low-lying spectra of atomic nuclei display diverse behaviors, for example rotational bands, which can be described phenomenologically by simple symmetry groups such as spatial SU(3). This leads to the idea of dynamical symmetry, where the Hamiltonian commutes with the Casimir operator(s) of a group, and is block-diagonal in subspaces defined by the
openaire   +3 more sources

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