To protect fifteen northern European countries against sea level rise, a highly ambitious plan was put forward to build massive dams across the North Sea and English Channel, which will cut off from rest of Atlantic Ocean.

We deal with an efficient approach for the complete error control in scientific computing. For results obtained by standard numerical rou tines we provide in an additional validation step existence and enclosure of the corresponding solutions. The basic ideas of these methods are derived exemplary for nonlinear Volterra equations and then generalized to various initial value problems. We combin...

The low-frequency performance of a vented-box loudspeaker system is directly related ta a small number of easily measured system parameters. This system is a fourtharder (24-dB per octave cutoff) high-pass filter which can be adjusted ta have a wide variety of response characteristics. Enclosure lasses have a significant effect on system performance and should be taken into account when assessi...

Numerical simulation of shielding effectiveness (SE) of a perforated shielding enclosure is carried out, using the finite element method (FEM). Possibilities of model definitions and differences between 2D and 3D models are discussed. An important part of any simulation is verification of the model results—here the simulation result are verified in terms of convergence of the model in dependenc...

Enclosure methods are a class of computer-aided proofs used in analysis. They are used increasingly to solve open problems in mathematics. The proposed project will use enclosure methods to address two open statistical decision problems: 1. rigorous parameter estimation in a chaotic statistical experiment, and 2. rigorous point estimation and exact posterior sampling in phylogenetics. To addres...

This study introduced a method for enhancing the shielding effectiveness of an enclosure with apertures using absorber. The absorber was installed on inner surface aperture and attenuated incident electromagnetic waves as they passed through it. Furthermore, reduced standing generated inside owing to cavity effect, improving effectiveness. A 3D numerical analysis confirmed that proposed structu...

This study presents an optimization problem for shape design of a 2-D radiant enclosure with transparent medium and gray-diffuse surfaces. The aim of the design problem is to find the optimum geometry of a radiant enclosure from the knowledge of temperature and heat flux over some parts of boundary surface, namely the design surface. The solution of radiative heat transfer is based on the net r...