#### Filter Results:

- Full text PDF available (18)

#### Publication Year

1969

2016

- This year (0)
- Last 5 years (4)
- Last 10 years (20)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- PETER WALTERS
- 2000

We consider a positively expansive local homeomorphism T : X → X satisfying a weak specification property and study the Ruelle operator Lϕ of a real-valued continuous function ϕ satisfying a property we call Bowen's condition. We study convergence properties of the iterates L n ϕ and relate them to the theory of equilibrium states.

- B Alver, B B Back, +60 authors B Wysłouch
- Physical review letters
- 2010

A measurement of two-particle correlations with a high transverse momentum trigger particle (p(T)(trig) > 2.5 GeV/c) is presented for Au+Au collisions at square root(s(NN)) = 200 GeV over the uniquely broad longitudinal acceptance of the PHOBOS detector (-4 < Delta eta < 2). A broadening of the away-side azimuthal correlation compared to elementary… (More)

- BY WILLIAM PARRY, PETER WALTERS
- 2007

0. Introduction. Considerable progress has been made in the classification of measure preserving transformations during the last thirteen years, reaching a high point with the recent work of Ornstein [1]. Most of this theory has concentrated on invertible transformations (automorphisms) since it was here that the essential problems awaited solution. Viewed… (More)

- Carinna Parraman, Peter Walters, Brendan Reid, David Huson
- Three-Dimensional Image Capture and Applications
- 2008

- Peter Walters
- Mathematical systems theory
- 1970

Introduction. Automorphisms and, more generally, affine transformations of nilmanifolds exhibit many interesting properties. For example, hyperbolic automorphisms serve as basic examples of Anosov diffeomorphisms [6], ergodic automorphisms are Kolmogorov automorphisms [5], and ergodic rotations are examples of transformations with mixed spectrum which do… (More)

- Peter Walters
- Mathematical systems theory
- 1970

Introduction. In Section 1 we define continuous maps with unstable centralizers and homeomorphisms with discrete centralizers. Expansive homeomorphisms, which have recently been of interest to several authors, have discrete centralizers. In Section 2 we obtain necessary and sufficient conditions for affine transformations of nilmanifolds to have discrete… (More)

- B. F. Bryant, Peter Walters
- Mathematical systems theory
- 1969

In different papers, Reddy [7] and Keynes and Robertson [5, 6] have characterized expansive homeomorphisms of a compact metric space X in terms of a special type of cover of X (called a generator in [5, 6]). The characterization is given as Theorem 1 below. The concept of a generator appears to be very useful and appears to provide considerable unity to the… (More)

- B Alver, B B Back, +65 authors B Wysłouch
- Physical review letters
- 2007

This Letter presents measurements of the elliptic flow of charged particles as a function of pseudorapidity and centrality from Cu-Cu collisions at 62.4 and 200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider. The elliptic flow in Cu-Cu collisions is found to be significant even for the most central events. For comparison with the Au-Au… (More)

- PETER WALTERS
- 2010

0. Introduction. Let Kn denote the «-dimensional torus. Let 7 be an affine transformation of Kn onto Kn and S an affine transformation of Km onto Km for which there exists a continuous map h of Kn onto Km satisfying hT= Sh. R. L. Adler and R. Palais have proved that, in the special cases when m = n and 7 and S are ergodic automorphisms of Kn, all… (More)

- Antonia Tzemanaki, Peter Walters, Anthony Graham Pipe, Chris Melhuish, Sanja Dogramadzi
- The international journal of medical robotics…
- 2014

BACKGROUND
Over the past century, abdominal surgery has seen a rapid transition from open procedures to less invasive methods, such as robot-assisted minimally invasive surgery (MIS). This study aimed to investigate and discuss the needs of MIS in terms of instrumentation and to inform the design of a novel instrument.
METHODS
A survey was conducted among… (More)