Results 31 to 40 of about 26,731 (163)

Seismic Damage Identification Method for Curved Beam Bridges Based on Wavelet Packet Norm Entropy

open access: yesSensors, 2021
Curved beam bridges, whose line type is flexible and beautiful, are an indispensable bridge type in modern traffic engineering. Nevertheless, compared with linear bridges, curved beam bridges have more complex internal forces and deformation due to the ...
Tongfa Deng   +4 more
doaj   +1 more source

Nonlinear Seismic Response Analysis of Curved and Skewed Bridge System with Spherical Bearings

open access: yesAdvances in Civil Engineering, 2013
A three-dimensional (3D) modeling approach to investigate nonlinear seismic response of a curved and skewed bridge system is proposed. The approach is applied to a three-span curved and skewed steel girder bridge in the United States.
Junwon Seo   +2 more
doaj   +1 more source

The Uniformly Accelerated Frame as a Test Bed for Analysing the Gravitational Redshift

open access: yesUniverse, 2020
Ever since Eddington’s analysis of the gravitational redshift a century ago, and the arguments in the relativity community that it produced, fine details of the roles of proper time and coordinate time in the redshift remain somewhat obscure.
Don Koks
doaj   +1 more source

Curves of constant breadth according to Darboux frame

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2017
In this paper, we investigate constant breadth curves on a surface according to Darboux frame and give some characterizations of these curves.
ALTUNKAYA, Bülent   +1 more
openaire   +4 more sources

Fabrication-Aware Joint Clustering in Freeform Space-Frames

open access: yesBuildings, 2023
The geometrical variability in the joints of large-scale, doubly-curved space-frame structures can have a substantial impact on the time and cost of their construction.
Antiopi Koronaki   +2 more
doaj   +1 more source

Curved Damper as Structural Retrofitting Element to Improve the Performance of Steel Truss Bridge

open access: yesRekayasa Sipil
The curved damper can control the structure movement by a physical approach to reduce the lateral deformation under the earthquake, which previously proved to be a significant improvement when applied on a moment-resisting frame in a laboratory scale ...
Alfinna Mahya Ummati   +2 more
doaj   +1 more source

Non-Hermitian Dirac Hamiltonian in Three-Dimensional Gravity and Pseudosupersymmetry

open access: yesAdvances in High Energy Physics, 2015
The Dirac Hamiltonian in the (2+1)-dimensional curved space-time has been studied with a metric for an expanding de Sitter space-time which is two spheres.
Özlem Yeşiltaş
doaj   +1 more source

Darboux Frame of a Curve Lying on a Lightlike Surface

open access: yesMathematical Sciences and Applications E-Notes, 2016
In this study, the Darboux frame is given for a curve lying on the lightlike surface of three dimensional Minkowski space. Moreover, known curvatures of the curve are obtained according to the Darboux frame and relationships between these curvatures are acquired.
TOPBAŞ, E. Selcen Yakıcı   +3 more
openaire   +4 more sources

Research on the critical technique of synchronous rotation construction with large angle for T-shape curve rigid frame bridge

open access: yesScientific Reports, 2022
The superstructure rotation method (SRM) has been widely used in recent years due to its rapid construction, low cost and less impact on existing traffic.This paper focuses on construction method and the key parameters related with large angle ...
Junhu Shao   +3 more
doaj   +1 more source

Kähler structures on spaces of framed curves [PDF]

open access: yesAnnals of Global Analysis and Geometry, 2018
We consider the space $\mathcal{M}$ of Euclidean similarity classes of framed loops in $\mathbb{R}^3$. Framed loop space is shown to be an infinite-dimensional Kähler manifold by identifying it with a complex Grassmannian. We show that the space of isometrically immersed loops studied by Millson and Zombro is realized as the symplectic reduction of ...
openaire   +2 more sources

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