We investigate the propagation of electromagnetic waves in a waveguide filled with a nonlinear material. The electromagnetic field is expanded in the usual eigenmodes of the waveguide, and the coupling between the modes is quanti fied. We derive the wave equations governing each mode, with special emphasis on the situation with a dominant TE-mode. The result is a strictly hyperbolic system of nonline

The paper presents the architecture and building blocks for a digital CNN, extending the previous ILVA design with packet switched communication and an OSI-compliant functional structure. Locality of operation results in a generic VHDL description that can be easily compiled for the various demands of real-time image processing. Some experiments with 2-neighborhood operations are shown.

Abstract in UndeterminedNanoindentation has recently gained attention as a characterization technique for mechanical properties of biological tissues, such as bone, on the sub-micron level. However, optimal methods to characterize viscoelastic properties of bones are yet to be established. This study aimed to compare the time-dependent viscoelastic properties of bone tissue obtained with different

This paper examines Noun Incorporation (NI) in Hopi and presents evidence that Hopi has Type IV noun incorporation according to the typological classification presented in Mithun 1984. The incorporated noun (IN) is visible to discourse reference, NI can strand modifiers, and the IN can have a classificatory function. Hopi thus fulfills the criteria for a syntactic analysis as proposed in Baker 198

The general form of the virtual work expression for the large strain Euler–Bernoulli beam theory is derived using the nominal strain (Biot's) tensor. From the equilibrium equations, derived from the virtual work expression, it turns out that a linear relation between Biot's stress tensor and the (Biot) nominal strain tensor forms the differential equation used to derive the elastica solution. More

A Fortran program for analysis of spectra obtained in proton induced x-ray emission spectroscopy is under development. The first version is working and some results are shown. The program uses a model which describes the physics involved in the analysis. The continuum is described by an exponentially decreasing function representing secondary electron induced bremsstrahlung and a constant approxim

In this lecture, we will discuss the emergence of the semiotic function, both ontogenetically and phylogenetically, and we will consider the part played by the picture sign in this development. In order to demonstrate that pictures are indeed signs, we will explore the basic elements of the sign presupposed but never put into focus neither by Saussure nor by Peirce. Indeed, explorations in the psy