| 11. |
- Hansbo, Peter F G, 1959, et al.
(författare)
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A simple nonconforming bilinear element for the elasticity problem
- 2001
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Ingår i: Trends in Computational Structural Mechanics, Lake Constance, Austria, May 20-23 (2001), W.A. Wall, K.U. Bletzinger, and K. Schweizerhof (Eds.). ; , s. 317-327
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Konferensbidrag (refereegranskat)
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| 12. |
- Johansson, Håkan, 1979, et al.
(författare)
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Computational Constitutive Calibration for Groundwater Flow
- 2003
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Ingår i: ADMOS 2003, Adaptive modeling and simulation, September 29-October 1, 2003, Göteborg, Sweden, P.Díez and N.-E.Wiberg (eds). - 8495999307 ; , s. 157-158
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 13. |
- Kalhori, S., et al.
(författare)
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Resonant ion-pair formation in electron collisions with rovibrationally cold H-3(+)
- 2004
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Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 69:2, s. 022713-
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Tidskriftsartikel (refereegranskat)abstract
- Experimental and theoretical cross sections for the resonant ion-pair formation (RIP) in electron collisions with rovibrationally cold H-3(+) ions are presented. Absolute cross sections for the RIP process producing H- ions are measured for center-of-mass energies between 2-20 eV using the CRYRING, heavy-ion storage ring. Theoretical cross sections are obtained using wave-packet propagation on both one- and two-dimensional models of relevant diabatic-potential energy surfaces and couplings of H-3(+) and H-3.
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| 14. |
- Larson, Jonas, et al.
(författare)
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Dynamics of a Raman coupled model: entanglement and quantum computation
- 2004
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Ingår i: Journal of Modern Optics. - 0950-0340 .- 1362-3044. ; 51:11, s. 1691-1704
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Tidskriftsartikel (refereegranskat)abstract
- The evolution of a Raman coupled three-level Lambda atom with two quantized cavity modes is studied in the large detuning case; i.e. when the upper atomic level can be adiabatically eliminated. Particularly the situation when the two modes are prepared in initial coherent or squeezed states, with a large average number of photons, is investigated. It is found that the atom, after specific interaction times, disentangles from the two modes, leaving them, in certain cases, in entangled Schrodinger cat states. These disentanglement times can be controlled by adjusting the ratio between average numbers of photons in the two modes. It is also shown how this effective model may be used for implementing quantum information processing. Especially it is demonstrated how to generate various entangled states, such as EPR and GHZ states, and quantum logic operations, such as the control-not and the phase gate.
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| 15. |
- Larson, Magnus, et al.
(författare)
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Analysis and modeling of field data on coastal morphological evolution over yearly and decadal time scales. Part 1: Background and linear techniques
- 2003
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Ingår i: Journal of Coastal Research. - 0749-0208. ; 19:4, s. 760-775
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Tidskriftsartikel (refereegranskat)abstract
- A number of statistical techniques to analyze and model coastal morphological evolution over yearly and decadal (i.e., long-term) time scales based on field data are presented. After a general introduction to long-term morphological modeling, mainly linear methods are discussed, whereas nonlinear methods are treated in a companion paper (SOUTHGATE et al., 2001). The theoretical background to the methods introduced is summarized and examples of field applications are given to illustrate each method. High-quality field data sets from different sites in the world, including Germany, The Netherlands, and United States, were employed in these examples. The analysis and modeling techniques used encompassed bulk statistics (mean, standard deviation, correlation etc), random sine functions, empirical orthogonal functions, canonical correlation analysis, and principal oscillation pattern analysis. Besides an evaluation of how suitable respective technique is for analyzing and modeling long-term morphological evolution, some general observations are presented regarding scales of morphological response as derived from the field applications. Data describing the evolution of both natural and anthropogenically affected coastal systems were studied. All methods investigated proved their usefulness for extracting characteristics of long-term morphological evolution, as well as for modeling this evolution, when applied under the right circumstances. However, more sophisticated techniques rely on more data in time and space, which is typically the limiting factor in the application of statistical methods as those presented here.
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