OBJECTIVE To explore patient factors related to the use of prescribed and non-prescribed drugs for dyspepsia in The Netherlands. DESIGN Patient survey study. SETTING AND SUBJECTS Questionnaires sent to patients who had a prescription for dyspepsia medication from their general practitioner. MAIN OUTCOME MEASURES Patient factors related to the on-demand use of prescribed medication and the...

BACKGROUND The aim of the present study was to describe the use of prescribed and non prescribed medicines in a non-institutionalised population older than 15 years of an urban area during the year 2000, in terms of age and gender, social class, employment status and type of Primary Health Care. METHODS Cross-sectional study. Information came from the 2000 Barcelona Health Interview Survey. T...

To compute the electrical resistance ( ~ conformal modulus) of a polygonally shaped resistorcut from a sheet of uniform resistivity, it suffices to find a conformal map of the polygon onto arectangle. Constructing such a map requires the solution of a Schwarz-Christoffel parameter prob-lem. First we show by examples that this is practical numerically. Then we consider an inverse 704...

Tone reservation peak-to-average (PAR) ratio reduction is an established area when it comes to bringing down signal peaks in multicarrier (DMT or OFDM) systems. When designing such a system, some questions often arise about PAR reduction. Is it worth the effort? How much can it give? How much does it give depending on the parameter choices? With this paper, we attempt to answer these questions ...

An important problem for tting local linear regression is the choice of the smoothing parameter. As the smoothing parameter becomes large, the estimator tends to a straight line, which is the least squares t in the ordinary linear regression setting. This property may be used to assess the adequacy of a simple linear model. Motivated by Silverman's (1981) work for testing multimodality in kerne...

We discuss controllability properties of non-invertible nonlinear discrete-time systems under the assumption of forward accessibility. It is shown how regularity properties of control sequences can be used in the construction of regions of complete controllability, i.e. control sets. Some properties of control sets are discussed, and the existence of regular controls with periodic points in a p...

This paper investigates the problem of asymptotic state observation for analytic nonlinear discrete-time systems. A new techniquefor the observer construction. based on the Taylor polynomial approximation of the inverse of the observability map, is presented and discussed. The degree chosen for the approximation is the most important design parameter of the observer, in that it can be chosen su...

The EPR paradox and the meaning of the Bell inequality are discussed. It is shown that considering the quantum objects as carrying with them " instruction kits " telling them what to do when meeting a measurement apparatus any paradox disappears. In this view the quantum state is characterized by the prescribed behaviour rather than by the specific value a parameter assumes as a result of an in...

We consider a class of incompressible fluids whose viscosities depend on the pressure and the shear rate. Suitable boundary conditions on the surface force at the inflow/outflow part of boundary are given. As an advantage of this, the mean value of the pressure over the domain is no more a free parameter which would have to be prescribed otherwise. We prove the existence and the uniqueness of w...