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Application of the bootstrap to the analysis of vibration test data
Hunter, N.F.; Paez, T.L. - 2010
Structural dynamic testing is concerned with estimation of system properties, including frequency response functions and modal characteristics. These properties are derived from tests on the structure of interest, during which excitations and responses are measured and Fourier techniques are...
Persistent link: https://www.econbiz.de/10009437088
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Evaluation of high-level waste pretreatment processes with an approximate reasoning model
Bott, T.F.; Eisenhawer, S.W.; Agnew, S.F. - 2009
The development of an approximate-reasoning (AR)-based model to analyze pretreatment options for high-level waste is presented. AR methods are used to emulate the processes used by experts in arriving at a judgment. In this paper, the authors first consider two specific issues in applying AR to...
Persistent link: https://www.econbiz.de/10009435393
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User`s guide to the META-Net economic modeling system. Version 1.2
Lamont, A. - 2009
In a market economy demands for commodities are met through various technologies and resources. Markets select the technologies and resources to meet these demands based on their costs. Over time, the competitiveness of different technologies can change due to the exhaustion of resources they...
Persistent link: https://www.econbiz.de/10009435694
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A geostatistical methodology to assess the accuracy of unsaturated flow models
Smoot, J.L.; Williams, R.E. - 2009
content at the same grid locations at the selected performance, and (2) estimation of the times. Node-by-node comparison of …
Persistent link: https://www.econbiz.de/10009435931
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Desktop modeling as a management tool for budgeting, forecasting, and reporting in an analytical laboratory
Hodge, C.A. - 2009
Managers are often required to quickly and accurately estimate resource needs. At times, additional work can be absorbed without additional resources. At other times, threshold resource boundaries are exceeded requiring an additional quantum of a specific resource. Cost savings` estimates,...
Persistent link: https://www.econbiz.de/10009436290
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Matter and symbols of the artificial
Rocha, L.M. - 2009
The study of complex systems should be based on a systems-theoretic framework which requires both self-organizing and symbolic dimensions. An inclusive framework based on the notion of semiotics is advanced to build models capable of representing, as well as evolving in their environments, with...
Persistent link: https://www.econbiz.de/10009436399
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Statistical validation of physical system models
Paez, T.L.; Barney, P.; Hunter, N.F.; Ferregut, C.; … - 2009
marginal and joint confidence intervals of statistics of interest of the physical 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 experimental data. These relative locations are used to judge the …
Persistent link: https://www.econbiz.de/10009436406
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Developing a CD-CBM Anticipatory Approach for Cavitation - Defining a Model Descriptor Consistent Between Processes
Allgood, G.O.; Dress, W.B.; Kercel, S.W. - 2009
A major problem with cavitation in pumps and other hydraulic devices is that there is no effective method for detecting or predicting its inception. The traditional approach is to declare the pump in cavitation when the total head pressure drops by some arbitrary value (typically 3o/0) in...
Persistent link: https://www.econbiz.de/10009436544
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Accrediting models for the TMD COEA: A case study in face assessment
Bravy, S.; May, W.L.; Mitchell, B.L. - 2009
This paper describes a face validation process developed to assess computer models used in Phase I of the Theater Missile Defense (TMD) Cost and Operational Effectiveness Analysis (COEA) and to aid the COEA Study Director in making accreditation decisions for those models. The process was...
Persistent link: https://www.econbiz.de/10009436569
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A Framework for Model Validation
Easterling, R.G. - 2009
Computational models have the potential of being used to make credible predictions in place of physical testing in many contexts, but success and acceptance require a convincing model validation. In general, model validation is understood to be a comparison of model predictions to experimental...
Persistent link: https://www.econbiz.de/10009436659