Within the framework of ecological systems analysis, the potential of niche formation plays an essential role, particularly in relation to the conditions of permanence or extinction of individual species. In this realm the model developed by Greve [Helgoländer Meeresuntersuchungen 49, (1995)...

We construct a strongly regular family of triangulations into straight and curved triangles of a bounded plane domain, the boundary of which consists of a finite number of straight line segments and parabolic arcs. This construction is based on transformations by which the standard isoparametric...

The article is dealing with the problem of cavity effect influence on the tidal measurements in geophysics. The measurements of tide-induced deformations and tilts are usually performed in underground cavities. The data obtained must be debugged of the influence of the cavity itself (cavity...

Time-domain boundary element method (BEM) for elastodynamic crack analysis is presented in this paper. Special attention is devoted to BEM based on traction boundary integral equations (BIEs) in time-domain. Both the hypersingular and the non-hypersingular traction BIEs are dealt with. A...

Abnormality in human joint biomechanics is the main cause of the degenerative disease development, therefore the description and correction of the joint biomechanics is essential for adequate treatment. We present an approach how to obtain the data of a patient and how to use these data...

The contact problem of symmetric indentation of two punches in the form of circular segments, without friction, into the exterior surface of a cylinder under harmonic force P0cosωt is considered. The problem is formulated into a singular integral equation of Hilbert type, its solution providing...

The “Six-line Problem” arises in computer vision and in the automated analysis of images. Given a three-dimensional (3D) object, one extracts geometric features (for example six lines) and then, via techniques from algebraic geometry and geometric invariant theory, produces a set of 3D...

A nonparametric model for daily rainfall simulation is presented. Nearest neighbour methods are used to conditionally simulate rainfall spells and amounts. A “local” subset of the observed record is used to formulate the conditional densities needed for simulation. This provides an effective...

A method for the selection of centers for radial basis function (RBF) approximation is introduced, which reduces the computational cost of the evaluation of the approximating function. The method takes into consideration:1.the geometric information (arc length and curvature) of the approximating...

The incremental FE method, which is a widely used procedure for the solution of problems of elasto-plasticity, is considered in this paper. An adaptive variant of this method is described as a tool for efficient computation of sufficiently accurate approximate solution. The main investigation is...