This report contains the proceedings of the 8th Overture workshop, held in London on 13th September 2010. © 2010 University of Newcastle upon Tyne. Printed and published by the University of Newcastle upon Tyne, Computing Science, Claremont Tower, Claremont Road, Newcastle upon Tyne, NE1 7RU, England. Bibliographical details PIERCE, K., PLAT, N., WOLFF, S. (EDS.) Proceedings of the 8th Overture...

We study the performance of a Wolff-type embedding algorithm for RP σ-models. We find that the algorithm in which we update the embedded Ising model à la Swendsen-Wang has critical slowing-down as zχ ≈ 1. If instead we update the Ising spins with a perfect algorithm which at every iteration produces a new independent configuration, we obtain zχ ≈ 0. This shows that the Ising embedding encodes w...

The spontaneous symmetry breaking in the Ising model can be equivalently described in terms of percolation of Wolff clusters. In O(n) spin models similar clusters can be built in a general way, and they are currently used to update these systems in Monte Carlo simulations. We show that for 3-dimensional O(2), O(3) and O(4) such clusters are indeed the physical ‘islands’ of the systems, i.e., th...

The spontaneous symmetry breaking in the Ising model can be equivalently described in terms of percolation of Wolff clusters. In O(n) spin models similar clusters can be built in a general way, and they are currently used to update these systems in Monte Carlo simulations. We show that for 3-dimensional O(2), O(3) and O(4) such clusters are indeed the physical 'islands' of the systems, i.e., th...

Abstract Previously, spectra of certain weighted composition operators W ѱ, φ on H 2 were determined under one two hypotheses: either converges iteration to the Denjoy-Wolff point uniformly all

We encountered a case of wide QRS tachycardia with chronic atrial fibrillation in Wolff-Parkinson-White syndrome. Unique features were late onset of syncope attacks associated with this tachycardia at an advanced age of 72 years old without previous documentation of Wolff-Parkinson-White syndrome on electrocardiogram. He had a high likelihood of sudden cardiac death. Catheter ablation using CAR...

[reaction: see text] Two-photon induced Wolff rearrangement of a terphenyl diazoketone 1 was achieved by using focused laser pulses of 532 nm from a Q-switched Nd:YAG laser. The nonfluorescent terphenyl diazoketone 1 was transformed into a fluorescent ester derivative 4, which can be detected in situ using the focused laser pulses at 532 nm. Laser power dependence studies show that the Wolff re...

A patient who developed palpitation in 1917 was later found to have the Wolff-Parkinson-White syndrome and survived to the age of 86, when he died of emphysema. Shortly before he first presented, a report of another patient had been published that can now retrospectively be recognized as containing the first tracings from a case of the Wolff-Parkinson-White syndrome; its coauthors were a distin...

the purpose of this study is comparison of manganese absorption capacity by natural and modified zeolite. for this purpose used by from semnan mines zeolite with mean particle diameter of 360 micrometer. for modified zeolite, 5 g amount of natural zeolite with 100 ml of 1 m sodium chloride solution mixed and maintained at 24 hours in room temperature. for measure specific surface of absorbents,...