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Verification and validation of ShipMo3D ship motion predictions in the time and frequency domains
Mctaggart, Kevin A. The Society of Naval Architects of Korea 2011 International Journal of Naval Architecture and Oc Vol.3 No.1
This paper compares frequency domain and time domain predictions from the ShipMo3D ship motion library with observed motions from model tests and sea trials. ShipMo3D evaluates hull radiation and diffraction forces using the frequency domain Green function for zero forward speed, which is a suitable approach for ships travelling at moderate speed (e.g., Froude numbers up to 0.4). Numerical predictions give generally good agreement with experiments. Frequency domain and linear time domain predictions are almost identical. Evaluation of nonlinear buoyancy and incident wave forces using the instantaneous wetted hull surface gives no improvement in numerical predictions. Consistent prediction of roll motions remains a challenge for seakeeping codes due to the associated viscous effects.
Perfect Capital Mobility and Optimal Monetary Policy
McTaggart, Douglas 세종대학교 국제경제연구소 1989 Journal of Economic Integration Vol.4 No.2
This paper analyses the effects of perfect capital mobility on the choice of optimal monetary policy rules in a two country game-theoretic setting. The set of Nash equilibrium monetary policies is identified from the set of attainable outcomes. An optimal policy requires the central bank to manage both the exchange rate and, more vigorously, the interest rate. Management of both variables is more vigorous than would occur under an insulating monetary policy. Pursuing an optimal policy yields the unique Pareto optimal outcome as a Nash equilibrium. Explicit policy coordination is not necessary.
Articles : Perfect Capital Mobility and Optimal Monetary Policy
( Douglas Mctaggart ) 세종대학교 경제통합연구소 1989 Journal of Economic Integration Vol.4 No.2
This paper analyses the effects of perfect capital mobility on the choice of optimal monetary policy rules in a two country game-theoretic setting. The set of Nash equilibrium monetary policies is identified from the set of attainable outcomes. An optimal policy requires the central bank to manage both the exchange rate and, more vigorously, the interest rate. Management of both variables is more vigorous than would occur under an insulating monetary policy. Pursuing an optimal policy yields the unique Pareto optimal outcome as a Nash equilibrium. Explicit policy coordination is not necessary.
Verification and validation of ShipMo3D ship motion predictions in the time and frequency domains
Kevin A. McTaggart 대한조선학회 2011 International Journal of Naval Architecture and Oc Vol.3 No.1
This paper compares frequency domain and time domain predictions from the ShipMo3D ship motion library with observed motions from model tests and sea trials. ShipMo3D evaluates hull radiation and diffraction forces using the frequency domain Green function for zero forward speed, which is a suitable approach for ships travelling at moderate speed (e.g., Froude numbers up to 0.4). Numerical predictions give generally good agreement with experiments. Frequency domain and linear time domain predictions are almost identical. Evaluation of nonlinear buoyancy and incident wave forces using the instantaneous wetted hull surface gives no improvement in numerical predictions. Consistent prediction of roll motions remains a challenge for seakeeping codes due to the associated viscous effects.