Seismic response of a tall steel tower in Tokyo, Japan, has been monitored by an integrated RTK-GPS and accelerometer system and compared to results of finite element models (FEM) and frequency domain decomposition (FDD) method. The integrated results presented herein are consistent with FEM predicted values. Because of the inherent limitations of GPS and accelerometer when applied to civil str...

This paper describes a technique to model an HVdc converter installation in the s-domain. A system equivalent is developed, utilising a frequency domain model, allowing the closed loop frequency response to be expressed. A rational function approximation of the closed loop frequency response is found by writing an overdetermined equation set, solved directly using Singular Value Decomposition. ...

given the sensitivity of current ground-based gravitational wave (gw) detectors, any continuous-wave signal we can realistically expect will be at a level or below the background noise. hence, any data analysis of detector data will need to rely on statistical techniques to separate the signal from the noise. while with the current sensitivity of our detectors we do not expect to detect any tru...

High-resolution methods of direction-of-arrival (DOA) estimation have been a topic of great importance in recent years for their wide-spread applications in radar, sonar, and mobile communication [7, 8]. Recently, most multiple source detection techniques are based on the eigenstructure decomposition of the covariance matrix. Among them, MUltiple SIgnal Classification (MUSIC) method [13] and Es...

In this paper, we first show that the domain decomposition methods that are usually efficient for solving elliptic problems typically fail when applied to acoustics problems. Next, we present an alternative domain decomposition algorithm that is better suited for the exterior Helmholtz problem. We describe it in a formalism that can use either one or two Lagrange multiplier fields for solving t...

This paper presents an approach to design observer-based fault detection (FD) systems for continuous linear time-invariant systems directly from frequency domain data. The design doesn’t need knowledge of system model. The computation mainly consists in a singular value decomposition (SVD) and a QR decomposition. The proposed approach is finally illustrated by an example. Copyright c ©2005 IFAC

The Langley Aerothermodynamic Upwind Relaxation Algorithm (LAURA), a NavierStokes solver, has been modi ed for use in a parallel, distributed-memory environment using the Message-Passing Interface (MPI) standard. A standard domain decomposition strategy is used in which the computational domain is divided into subdomains with each subdomain assigned to a processor. Performance is examined on de...

Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 15 June 2021Accepted: 04 October 2021Published online: 31 January 2022Keywordsfinite element method, preconditioner, multigrid domain decomposition methodAMS Subject Headings65F08, 65F10, 65N55Publication DataISSN (print): 1064-8275ISSN (online): 1095-7197Publisher: Socie...