Similar Search Results

Characterization of nonlinear dynamic systems using artificial neural networks

Urbina, A.; Hunter, N.F.; Paez, T.L. - 2010

The efficient characterization of nonlinear systems is an important goal of vibration and model testing. The authors build a nonlinear system model based on the acceleration time series response of a single input, multiple output system. A series of local linear models are used as a template to...

Persistent link: https://www.econbiz.de/10009435920

Statistical validation of system models

Barney, P.; Ferregut, C.; Perez, L.E.; Hunter, N.F.; … - 2009

statistics of interest of the system. These same measures of behavior are estimated for the mathematical model. The statistics of … interest from the mathematical model are located relative to the confidence intervals for the statistics obtained from the …

Persistent link: https://www.econbiz.de/10009436156

Poisson type models and descriptive statistics of computer network information flows

Downing, D.; Fedorov, V.; Dunigan, T.; Batsell, S. - 2009

analysis. Consequently the authors try to show that some behavioral patterns of descriptive statistics which are typical for … expected behavior of the sample covariance functions. Matching the images of these two descriptive statistics allows them to … infer the presence of trends or double stochasticity in analyzed time series. They considered only statistics which are …

Persistent link: https://www.econbiz.de/10009437260

Field balancing in the real world

Bracher, B. - 2009

Field balancing can achieve significant results when other problems are present in the frequency spectrum and multiple vibrations are evident in the waveform. Many references suggest eliminating other problems before attempting to balance. That`s great - if you can do it. There are valid reasons...

Persistent link: https://www.econbiz.de/10009436282

Development of a force specification for a force-limited random vibration test

Stevens, R.R. - 2009

Vibration testing, techniques have been developed and employed that reduce the overtesting caused by the essentially infinite mechanical impedance of the shaker in conventional vibration tests. With these ``force-limiting`` techniques, two vibration test specifications are used: the conventional...

Persistent link: https://www.econbiz.de/10009436954

A comparison study of modal parameter confidence intervals computed using the Monte Carlo and Bootstrap techniques

Doebling, S.W.; Farrar, C.R.; Cornwell, P.J. - 2009

simulation of random data sets based on the statistics of the measured data and an assumed distribution of the variability in the … technique does not. Also, the Monte Carlo technique can only estimate random errors, while the bootstrap statistics represent …

Persistent link: https://www.econbiz.de/10009437304

Stabilization of nonlinear systems with parametric uncertainty using variable structure techniques

Schoenwald, D.A.; Oezguener, Ue. - 2009

The authors present a result on the robust stabilization of a class of nonlinear systems exhibiting parametric uncertainty. They consider feedback linearizable nonlinear systems with a vector of unknown constant parameters perturbed about a known value. A Taylor series of the system about the...

Persistent link: https://www.econbiz.de/10009436834

AutoCAD discipline layering convention. Revision 1

Nielsen, B.L. - 2009

This document is a user`s guide to establishing layering standards for drawing development. Uniform layering standards are established to exchange of AutoCAD datasets between organizations and companies. Consistency in the layering conventions assists the user through logical separation and...

Persistent link: https://www.econbiz.de/10009436838

Depleted uranium hexafluoride (DUF{sub 6}) management system--a decision tool

Gasper, J.R.; Sutter, R.J.; Avci, H.I. - 2009

The Depleted Uranium Hexafluoride (DUF{sub 6}) Management System (DMS) is being developed as a decision tool to provide cost and risk data for evaluation of short-and long-term management strategies for depleted uranium. It can be used to assist decision makers on a programmatic or site-specific...

Persistent link: https://www.econbiz.de/10009435731

Pennsylvania life cycle costing manual

2009

Until the 1970s, it was commonplace for institutions and governments to purchase equipment based on lowest initial (first) costs. Recurring costs such as operational, maintenance, and energy costs often were not considered in the purchase decision. If an agency wanted to buy something, it...

Persistent link: https://www.econbiz.de/10009435904

1
2
3
4
5
6
7
8
9
10
Next
Last