S. Vassiliadis K. Bertels G. G. Pechanek E.E. Dept Dept. Gestion de l'Entreprise DSP Architecture/Development T.U. Delft, Delft Univ. of Namur IBM Corporation The Netherlands 2628 CD 5000 Namur, Belgium RTP, N.C. 27709 USA Abstract In this paper we investigate the possibility of constructing xed point units using feed-forward neural networks. We investigate the possibility of constructing small...

The problem of transition to chaos, i.e. the destruction of invariant circles or KAM (Kolmogorov-Arnold-Moser) curves, in area preserving nontwist maps is studied within the renormalization group framework. Nontwist maps are maps for which the twist condition is violated along a curve known as the shearless curve. In renormalization language this problem is that of nding and studying the xed po...

We unveil new results based on measurement that guarantee the existence of unique xed points which need not be maximal. In addition, we establish that least xed points are always attractors in the topology, and then explore the consequences of these ndings in analysis. In particular, an extension of the Banach xed point theorem on compact metric spaces 3] is obtained.

background: at the end of fi xed orthodontic treatment, the remnant of adhesive should be eliminated from the tooth surface. the purpose of this study was to compare the effect of three methods of removing adhesive on enamel surface roughness, dental pulp t emperature, and also on the time spent. materials and methods: the brackets on 90 extracted teeth were debonded using bracket removal plier...

The relationship between xed point theory and K {theory is explained, both classical Nielsen theory (versus K 0) and 1{parameter xed point theory (versus K 1). In particular, various zeta functions associated with suspension ows are shown to come in a natural way as \traces" of \torsions" of Whitehead and Reidemeister type.

The square root function has a unique positive ¿xed point. This function has the following properties: it is strictly increasing and strictly concave, with sEf ' f, sE@ : @ for @ , and sEK K for K : . It is shown that any function from U to U satisfying these properties has a unique positive ¿xed point.

In this paper we underline the importance of the parametric subregularity property of setvalued mappings, de…ned with respect to …xed sets. We show that this property appears naturally for some very simple mappings which play an important role in the theory of metric regularity. We prove a result concerning the preservation of metric subregularity at generalized compositions. Then we obtain, on...

Predicting the future is not easy. As young medical graduates in the 1970s we were told not to bother with infectious disease specialties as they had largely been fi xed with vaccines and antibiotics. There was a surplus of doctors, and the Alma Ata Declaration had ushered in a new model of primary health care which was going to solve third world poverty and disease. Things were looking so good...

The nationwide screening service for breast cancer, known as BOB from the initials of the Dutch title (Bevolkingonderzoek op Borstkanker) has been set up by the Dutch government for asymptomatic women between 50 and 75 years of age. The primary test offered is X-ray mammography, aimed at early detection of breast cancer in order to reduce the mortality from this disease. The examinations are pe...