3,545 research outputs found
Polynomial approach to nonlinear predictive generalized minimum variance control
No full textA relatively simple approach to non-linear predictive generalised minimum variance (NPGMV) control is introduced for non-linear discrete-time multivariable systems. The system is represented by a combination of a stable non-linear subsystem where no structure is assumed and a linear subsystem that may be unstable and modelled in polynomial matrix form. The multi-step predictive control cost index to be minimised involves both weighted error and control signal costing terms. The NPGMV control law involves an assumption on the choice of cost-function weights to ensure the existence of a stable non-linear closed-loop operator. A valuable feature of the control law is that in the asymptotic case, where the plant is linear, the controller reduces to a polynomial matrix version of the well known generalised predictive control (GPC) controller. In the limiting case when the plant is non-linear and the cost-function is single step the controller becomes equal to the polynomial matrix version of the so-called non-linear generalised minimum variance controller. The controller can be implemented in a form related to a non-linear version of the Smith predictor but unlike this compensator a stabilising control law can be obtained for open-loop unstable processes
Database for: Excavations at Tall Jawa, Jordan: Volume 3, The Iron Age Pottery
No full textThis is a Microsoft Access database of imagery, drawings, and photos accompanying Excavations at Tall Jawa, Jordan: Volume 3, The Iron Age Pottery by P.M. Michèle Daviau. The text and database present a detailed typology of the Iron Age pottery excavated from 1989 to 1995. Together, they represent an in-depth analysis of the forming techniques employed to make each type of vessel from bowls to colanders, cooking pots to pithoi.
The digital archive is a work in progress by the author. The archive currently holds the collection for Excavation Field D. Upon completion, it will include seven collections, each one consisting of a database of diagnostic sherds and vessels as well as the images of these pots as .tiff files. Databases are related to excavation fields and are designed for meaningful searches: A, B, C-east, C-west, A-east (associated with C-west), D and E
IoWoman, March/April 2004, Vol. 34, no. 2
No full textNewsletter for the Iowa Commission on the Status of Wome
IoWoman, March/April 2004, Vol.34, no.2
No full textNewsletter for the Iowa Commission on the Status of Wome
Controller performance design and assessment using nonlinear generalized minimum variance benchmark : scalar case
No full textA nonlinear version of the Generalized Minimum Variance (GMV) multivariable control law has been recently derived for the control of nonlinear, possibly time-varying systems. This paper presents the results of the controller performance assessment against this Nonlinear GMV controller in the scalar case. The minimum variance of the generalized output is estimated from routine operating data given only the plant time delay and the technique is applied to a nonlinear reactor control example
Old Fashioned Ice Cream Social at the U of M, Crookston Features Author Gayla Marty on Wed., Aug. 18, 2010, from 2-4 p.m.
No full textTollefson, Elizabeth. (2010). Old Fashioned Ice Cream Social at the U of M, Crookston Features Author Gayla Marty on Wed., Aug. 18, 2010, from 2-4 p.m.. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/222491
Our Mission and our Values' : an approach to Russian Banks' Communication Strategies
No full textThis paper looks at the mission statements of Russian banks posted on their websites with the aim of identifying recurrent discursive strategies in an intercultural perspective. Starting from the surveyof twenty websites of Russian banks, the author attempts to highlight the linguistic and visual treatment of mission and value statements, where there seems to emergean interesting mix of both "globalized" and local, culture-specific, features
La politica linguistica nei paesi della CSI
No full textThe paper deals with language status and language use in post Soviet Republics. After a brief introduction to Soviet language policy, the author deals with data from the National census, about the number of Russian speakers in these areas in the years 1989-1991 and in 2004-2006. Other data regard the use of Russian language, as opposed to/or in accordance with titular languages, in different social spheres (education, media, institutions)
Author David Halberstam Available for Interviews Tuesday
No full textLegendary journalist and author David Halberstam, who speaks at 7 p.m. Tuesday (April 20) in the Johnson Commons Ballroom, will be available for interviews earlier that afternoon. The media session is set for 3:30 p.m. in the Bondurant Hall lounge, located on the second floor. No advance credentials are required
H-infinity control of nonlinear systems with common multi-channel delays
No full textA generalized H-infinity controller is derived for the control of nonlinear, possibly time-varying, multivariable systems with common output or input channel delays. A Nonlinear Generalized Minimum Variance (NGMV) controller has recently been proposed for plants modelled by a combination of linear and nonlinear subsystems, where the disturbance and reference models are linear. The aim in the following is to obtain a related controller but one which minimizes an H-infinity norm, to enable sensitivity functions to be shaped. The cost-function to be minimized involves both error and control signal costing terms, which are related to sensitivity and control sensitivity costing terms
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