Results 21 to 30 of about 30,646 (281)

Research on Electrical Equipment Big Data Mobile Laboratory Based on Power Grid Cloud Data Management and Its Application

open access: yes发电技术, 2023
Aiming at the problems of low efficiency, low level of intelligent operation and low level of data informatization application encountered in the current substation equipment test operation, a mobile laboratory platform based on grid cloud data ...
WU Hao   +4 more
doaj   +1 more source

Stability of filament-wound hyperbolic flexible pipes under internal pressure based on non-geodesic winding

open access: yesScientific Reports, 2021
Filament-wound flexible pipes are widely used to transport fluid in pipeline systems, proved extremely useful in marine engineering. The hyperbolic flexible pipes have good vibration suppression performance, but they are easily deformed under internal ...
Guo-min Xu, Chang-geng Shuai
doaj   +1 more source

BCFT and OSFT moduli: an exact perturbative comparison [PDF]

open access: yes, 2017
Starting from the pseudo-${\cal B}_0$ gauge solution for marginal deformations in OSFT, we analytically compute the relation between the perturbative deformation parameter $\tilde\lambda$ in the solution and the BCFT marginal parameter $\lambda$, up to ...
Larocca, Pier Vittorio   +1 more
core   +2 more sources

Non-associative Deformations of Geometry in Double Field Theory [PDF]

open access: yes, 2014
Non-geometric string backgrounds were proposed to be related to a non-associative deformation of the space-time geometry. In the flux formulation of double field theory (DFT), the structure of mathematically possible non-associative deformations is ...
Blumenhagen, Ralph   +4 more
core   +4 more sources

A new method for analyzing the impact of winding mechanical defects on the equivalent circuit parameters of power transformers

open access: yesIET Generation, Transmission & Distribution, 2023
Condition monitoring of the power transformer winding and diagnose of the fault in its incipient stages can prevent the spread of defect, and as a result, the unexpected exit of the transformer.
Hadi Tarimoradi, Milad Askari
doaj   +1 more source

Topological singularities and the general classification of Floquet-Bloch systems [PDF]

open access: yes, 2015
Recent works have demonstrated that the Floquet-Bloch bands of periodically-driven systems feature a richer topological structure than their non-driven counterparts.
Nathan, Frederik, Rudner, Mark S.
core   +2 more sources

The Structure Analytical Research of Porous Permeable Wire Material

open access: yesManagement Systems in Production Engineering, 2016
The details of making technology of porous permeable material with use of wire are allowed to carry out the analytical research of structure and structural characteristics of wire winding body.
Jakubowski Andrzej, Crasto Renata
doaj   +1 more source

O(d,d,Z) Transformations as Automorphisms of the Operator Algebra [PDF]

open access: yes, 1996
We implement the O(d,d,Z) transformations of T-duality as automorphisms of the operator algebras of Conformal Field Theories. This extends these transformations to arbitrary field configurations in the deformation class.Comment: 9 pages, Plain ...
Buscher   +19 more
core   +2 more sources

Comprehensive Analysis of Winding Electromagnetic Force and Deformation During No-Load Closing and Short-Circuiting of Power Transformers

open access: yesIEEE Access, 2021
When an electromagnetic transient occurs in a transformer, certain parts of the winding will be over stressed internally, which in severe cases will lead to the destruction of the winding insulation.
Chenchen Zhang   +3 more
doaj   +1 more source

Non-abelian D=11 Supermembrane [PDF]

open access: yes, 2009
We obtain a U(M) action for supermembranes with central charges in the Light Cone Gauge (LCG). The theory realizes all of the symmetries and constraints of the supermembrane together with the invariance under a U(M) gauge group with M arbitrary.
A. Belhaj   +29 more
core   +1 more source

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