The Experts below are selected from a list of 156 Experts worldwide ranked by ideXlab platform

I. R. Ciric - One of the best experts on this subject based on the ideXlab platform.

  • Multiple waveguide discontinuity modelling with restricted mode interaction
    IEEE Transactions on Microwave Theory and Techniques, 1994
    Co-Authors: G. A. Gesell, I. R. Ciric
    Abstract:

    A general Modal analysis solution is presented for the scattering from multiple discontinuities in waveguides. As in a previous Formulation, a recurrence procedure is used to derive the global scattering matrices from the coupled sets of truncated linear equations, which are obtained by expanding the corresponding fields in Modal Form and imposing the boundary conditions at each junction. In the present analysis, the higher order modes are included in the truncations at each discontinuity plane, but only those modes that effectively interact between the discontinuities are retained. Numerical results are given for a thick iris and multiple-step transFormers in circular waveguides.

  • A novel Modal analysis Formulation for multiple waveguide discontinuities
    1992 Symposium on Antenna Technology and Applied Electromagnetics, 1992
    Co-Authors: G. A. Gesell, I. R. Ciric
    Abstract:

    General multiple waveguide discontinuities are analyzed using Modal analysis. The corresponding fields are expanded in Modal Form and the boundary conditions are imposed at each junction. Analytic expressions for the global scattering matrices are derived using a recurrence procedure that requires substantially less computation than the commonly used cascading techniques. The convergence and accuracy of the analytic expressions are illustrated for step-discontinuities in circular waveguides. Numerical results are presented for a thick iris in a circular waveguide.

Bálint Vanek - One of the best experts on this subject based on the ideXlab platform.

  • CDC - Model order reduction of LPV systems based on parameter varying Modal decomposition
    2016 IEEE 55th Conference on Decision and Control (CDC), 2016
    Co-Authors: Istvan Gozse, Tamás Luspay, Tamás Péni, Zoltán Szabó, Bálint Vanek
    Abstract:

    The model reduction problem of high dimensional Linear Parameter Varying (LPV) systems is addressed in the paper. Modal representation of local systems is computed first for fixed values of the scheduling parameter. Modes are then matched and a smooth quasi-Modal Form is obtained over the entire parameter domain. Classification of system modes is applied to explore dynamic coherence of the model. Structured parameter-varying Gramians are constructed and used for balancing the model and eliminating negligible components. Numerical example illustrates the effectiveness of the methodology.

  • Model order reduction of LPV systems based on parameter varying Modal decomposition
    2016 IEEE 55th Conference on Decision and Control (CDC), 2016
    Co-Authors: Tamás Luspay, Tamás Péni, Zoltán Szabó, Bálint Vanek
    Abstract:

    The model reduction problem of high dimensional Linear Parameter Varying (LPV) systems is addressed in the paper. Modal representation of local systems is computed first for fixed values of the scheduling parameter. Modes are then matched and a smooth quasi-Modal Form is obtained over the entire parameter domain. Classification of system modes is applied to explore dynamic coherence of the model. Structured parameter-varying Gramians are constructed and used for balancing the model and eliminating negligible components. Numerical example illustrates the effectiveness of the methodology.

G. A. Gesell - One of the best experts on this subject based on the ideXlab platform.

  • Multiple waveguide discontinuity modelling with restricted mode interaction
    IEEE Transactions on Microwave Theory and Techniques, 1994
    Co-Authors: G. A. Gesell, I. R. Ciric
    Abstract:

    A general Modal analysis solution is presented for the scattering from multiple discontinuities in waveguides. As in a previous Formulation, a recurrence procedure is used to derive the global scattering matrices from the coupled sets of truncated linear equations, which are obtained by expanding the corresponding fields in Modal Form and imposing the boundary conditions at each junction. In the present analysis, the higher order modes are included in the truncations at each discontinuity plane, but only those modes that effectively interact between the discontinuities are retained. Numerical results are given for a thick iris and multiple-step transFormers in circular waveguides.

  • A novel Modal analysis Formulation for multiple waveguide discontinuities
    1992 Symposium on Antenna Technology and Applied Electromagnetics, 1992
    Co-Authors: G. A. Gesell, I. R. Ciric
    Abstract:

    General multiple waveguide discontinuities are analyzed using Modal analysis. The corresponding fields are expanded in Modal Form and the boundary conditions are imposed at each junction. Analytic expressions for the global scattering matrices are derived using a recurrence procedure that requires substantially less computation than the commonly used cascading techniques. The convergence and accuracy of the analytic expressions are illustrated for step-discontinuities in circular waveguides. Numerical results are presented for a thick iris in a circular waveguide.

Tamás Luspay - One of the best experts on this subject based on the ideXlab platform.

  • CDC - Model order reduction of LPV systems based on parameter varying Modal decomposition
    2016 IEEE 55th Conference on Decision and Control (CDC), 2016
    Co-Authors: Istvan Gozse, Tamás Luspay, Tamás Péni, Zoltán Szabó, Bálint Vanek
    Abstract:

    The model reduction problem of high dimensional Linear Parameter Varying (LPV) systems is addressed in the paper. Modal representation of local systems is computed first for fixed values of the scheduling parameter. Modes are then matched and a smooth quasi-Modal Form is obtained over the entire parameter domain. Classification of system modes is applied to explore dynamic coherence of the model. Structured parameter-varying Gramians are constructed and used for balancing the model and eliminating negligible components. Numerical example illustrates the effectiveness of the methodology.

  • Model order reduction of LPV systems based on parameter varying Modal decomposition
    2016 IEEE 55th Conference on Decision and Control (CDC), 2016
    Co-Authors: Tamás Luspay, Tamás Péni, Zoltán Szabó, Bálint Vanek
    Abstract:

    The model reduction problem of high dimensional Linear Parameter Varying (LPV) systems is addressed in the paper. Modal representation of local systems is computed first for fixed values of the scheduling parameter. Modes are then matched and a smooth quasi-Modal Form is obtained over the entire parameter domain. Classification of system modes is applied to explore dynamic coherence of the model. Structured parameter-varying Gramians are constructed and used for balancing the model and eliminating negligible components. Numerical example illustrates the effectiveness of the methodology.

Victoria Leong - One of the best experts on this subject based on the ideXlab platform.

  • Toward a neuroscientific understanding of play: A dimensional coding framework for analyzing infant-adult play patterns
    Frontiers in Psychology, 2018
    Co-Authors: Dave Neale, Hatice Dedetas, Melissa Scarpate, Kaili Clackson, Stanimira Georgieva, Sam Wass, Victoria Leong
    Abstract:

    Play during early life is a ubiquitous activity, and an individual’s propensity for play is positively related to cognitive development and emotional well-being. Play behaviour (which may be solitary or shared with a social partner) is diverse and multi-faceted. A challenge for current research is to converge on a common definition and measurement system for play – whether examined at a behavioural, cognitive or neurological level. Combining these different approaches in a multiModal analysis could yield significant advances in understanding the neurocognitive mechanisms of play, and provide the basis for developing biologically grounded play models. However, there is currently no integrated framework for conducting a multiModal analysis of play that spans brain, cognition and behaviour. The proposed coding framework uses grounded and observable behaviours along three dimensions (sensorimotor, cognitive and socio-emotional), to compute inferences about playful behaviour in a social context, and related social interactional states. Here, we illustrate the sensitivity and utility of the proposed coding framework using two contrasting dyadic corpora (N=5) of mother-infant object-oriented interactions during experimental conditions that were either non-conducive (Condition 1) or conducive (Condition 2) to the emergence of playful behaviour. We find that the framework accurately identifies the Modal Form of social interaction as being either non-playful (Condition 1) or playful (Condition 2), and further provides useful insights about differences in the quality of social interaction and temporal synchronicity within the dyad. It is intended that this fine-grained coding of play behaviour will be easily assimilated with, and inForm, future analysis of neural data that is also collected during adult-infant play. In conclusion, here, we present a novel framework for analysing the continuous time-evolution of adult-infant play patterns, underpinned by biologically inFormed state coding along sensorimotor, cognitive and socio-emotional dimensions. We expect that the proposed framework will have wide utility amongst researchers wishing to employ an integrated, multiModal approach to the study of play, and lead towards a greater understanding of the neuroscientific basis of play. It may also yield insights into a new biologically grounded taxonomy of play interactions.