A new deformable model based on the use of a particle system is introduced. By defining the local behavior of each particle, the system behaves as an active contour model showing a variable topology and regularization properties. The efficiency of the particle system is illustrated by two applications: the first one concerns the use of the system as a skeleton extractor based on the propagation...

Over the past 15 years, we have been using diagnostic laparoscopy as a tool in those selected cases which do not respond to conservative treatment. In a large proportion of these patients (211/436), we have identified adhesions of the terminal ileum to the lateral abdominal wall similar to the peritoneal folds found in a case of paracecal hernia (Figure 1). We have also found these adhesions in...

This paper addresses the following question: Given a planar poly-line drawing of a graph, can we “straighten it out”, i.e., convert it to a planar straight-line drawing, while keeping some features unchanged? We show that any y-monotone poly-line drawing can be straightened out while maintaining y-coordinates and height. The width may increase much, but we also show that on some graphs exponent...

Ich erkläre hiermit, diese Arbeit und die dazugehörigen Programme vollkommen selbstständig ver-fasst und nur die angegebenen Quellen und Hilfsmittel verwendet zu haben. I hereby declare that this diploma thesis and the associated programs are completely my own work and that I used no other than the cited sources. DaimlerChrysler REM/AC division for their forthcoming cooperation and the supply o...

No one before Pierre Fauchard had claimed to be able to move teeth except Celsus who suggested applying finger pressure to a tooth that was erupting in the wrong direction. Fauchard advised dentists to examine a patient’s mouth and occlusion first and then, if necessary, to use one of a number of methods he proposed to ‘‘straighten’’ irregular teeth. The principal device was a ‘‘plate,’’ a smal...

The 5.0 French Palmaz-Schatz stent delivery system is a relatively bulky, stiff system which can be advanced only over a 0.014" wire. Although crossing failure is rare, advancement of the delivery system through tortuous, rigid vessels may be unsuccessful. We report on four consecutive cases in which the initial advancement of the Palmaz-Schatz stent delivery system was unsuccessful due to vess...

This paper is concerned with parameterized families of approximate fibrations from a compact Hilbert cube manifold M to a compact polyhedron B. The main result shows how to straighten out certain of these families to be nearly like a product. As an application of this technique, it is shown that an approximate fibration p:M +B can be approximated arbitrarily closely by bundle maps if and only i...

The article represents equipment that belongs to the light industry, in particular non-woven fabric manufacturing techniques and technologies, may be used for felt tightening straightening. describes device constructed by us, which it is possible tighten straighten without creating differently deformed areas, protecting structural composition of treated over entire area increasing strength In a...

The ( 2 + 1 )-dimensional Lax integrable equation is decomposed into solvable ordinary differential equations with the help of known id="M3"> soliton associated Ablowitz-Kaup-Newell-Segur hierarchy. Then, based on finite-order expansion matrix, a hyperelliptic Riemann surface and Abel-Jacobi coordinates...