Results 21 to 30 of about 706,746 (353)

“Analytical continuation” of flattened Gaussian beams

open access: yesJournal of the Optical Society of America A, 2023
A purely analytical extension of flattened Gaussian beams [Opt. Commun. 107, 335 (1994)OPCOB80030-401810.1016/0030-4018(94)90342-5] to any values of beam order is here proposed. Due to it, the paraxial propagation problem of axially symmetric, coherent flat-top beams through arbitrary ABCD optical systems can definitely be solved in closed form via a ...
openaire   +3 more sources

A Fast and Compact Quantum Random Number Generator [PDF]

open access: yes, 1999
We present the realization of a physical quantum random number generator based on the process of splitting a beam of photons on a beam splitter, a quantum mechanical source of true randomness.
Anton Zeilinger   +13 more
core   +2 more sources

Buckling of Continuously Supported Beams [PDF]

open access: yesJournal of Applied Mechanics, 1973
The buckling of infinite beams continuously supported by a semi-infinite elastic continuum is investigated. The buckling loads were determined when the beam rests on a two-dimensional elastic continuum and also when the foundation extends beyond the width of the beam.
openaire   +2 more sources

Application of Laplace Transform to the Free Vibration of Continuous Beams

open access: yesArchives of Civil Engineering, 2017
Laplace Transform is often used in solving the free vibration problems of structural beams. In existing research, there are two types of simplified models of continuous beam placement. The first is to regard the continuous beam as a single-span beam, the
Wen H.B., Zeng T., Hu G.Z.
doaj   +1 more source

Lateral Seismic Response and Self-Centering Performance of a Long-Span Railway Continuous Beam-Arch Bridge

open access: yesShock and Vibration, 2020
Based on the seismic isolation design concept of functional separation, a seismic isolation system with bearings and braces combination for railway bridge was proposed.
Yan Shi   +4 more
doaj   +1 more source

Continuity of the eigenvalues for a vibrating beam

open access: yesApplied Mathematics Letters, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xin Jiang   +3 more
openaire   +2 more sources

ABOUT METHOD FOR CONTINUOUS BEAM ACCOUNT

open access: yesНаука и техника, 2006
The paper considers in detail a calculation of a multispan continuous beam using two methods: work method and method of three-moment equations. As a result of comparison and detailed analysis of these methods it has been exhibited that the calculation ...
A. Ch. Yakubovsky, Ch. A. Yakubovsky
doaj   +1 more source

Determination of the Stress Increase of the Unbonded Tendon in a Continuous Concrete Beam at Ultimate Capacity Using Nonlinear Analysis

open access: yesNordic Concrete Research, 2021
Predicting the stress increase of an unbonded tendon in a post-tensioned continuous concrete beam at ultimate capacity is more difficult than when bonded tendons are used.
Nakari Tarja, Laaksonen Anssi
doaj   +1 more source

On the realization of Bell observables

open access: yes, 2004
We show how Bell observables on a bipartite quantum system can be obtained by local observables via a controlled-unitary transformation. For continuous variables this result holds for the Bell observable corresponding to the non-conventional heterodyne ...
Bennett   +9 more
core   +2 more sources

Lateral-distortional buckling of continuous steel-concrete composite beam

open access: yesRevista IBRACON de Estruturas e Materiais, 2018
In hogging bending moment regions of continuous composite beams the collapse by lateral-distortional buckling (LDB) can occur. The design against LDB according to ABNT NBR 8800:2008 begins with the determination of the elastic critical moment, which ...
T. V. AMARAL   +3 more
doaj   +2 more sources

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