On linear co-positive Lyapunov functions for sets of linear positive systems (2009)
Knorn, Florian, Mason, Oliver, Shorten, Robert
In this paper we derive necessary and sufficient conditions for the existence of a common linear co-positive Lyapunov function for a finite set of linear positive systems. Both the state dependent...
Applications of Linear Co-positive Lyapunov Functions for Switched Linear Positive Systems (2009)
Knorn, Florian, Mason, Oliver, Shorten, Robert
In this paper we review necessary and sufficient conditions for the existence of a common linear co-positive Lyapunov function for switched linear positive systems. Both the state dependent and...
Switching Stability of Automotive Roll Dynamics Subject to Interval Uncertainty (2008)
Solmaz, Selim, Shorten, Robert, Mason, Oliver
In this paper we apply some recent results on the stability of switched systems with interval uncertainty for analyzing the roll stability of automotive vehicles subject to bounded parametric...
The role of control and system theory in systems biology (2008)
Wellstead, Peter, Bullinger, Eric, Kalarnatianos, Dimitrios, Mason, Oliver, Verwoerd, Mark
The use of new technology and mathematics to study the systems of nature is one of the most significant scientific trends of the century. Driven by the need for more precise scientific understanding,...
R. Shorten, K. Narendra, O. Mason, Robert Shorten, Kumpati S. Narendra, Oliver Mason
A result on common quadratic Lyapunov functions
Douglas Leith, Robert Shorten, William Leithead, Oliver Mason, Paul Curran
in the design of switched linear control systems:
Global phase-locking in finite populations of phase-coupled oscillators (2007)
We present new necessary and sufficient conditions for the existence of fixed points in a finite system of coupled phase oscillators on a complete graph. We use these conditions to derive bounds on...
Some results on quadratic stability of switched systems with interval uncertainty (2007)
Zeheb, Ezra, Mason, Oliver, Solmaz, Selim, Shorten, Robert
In this paper we present some results on the quadratic stability of switched systems with uncertain parameters. We show that the quadratic stability of a class of switched uncertain systems may be...
Some results on quadratic stability of switched systems with interval uncertainty (2007)
Zeheb, Ezra, Mason, Oliver, Solmaz, Selim, Shorten, Robert
In this paper we present some results on the quadratic stability of switched systems with uncertain parameters. We show that the quadratic stability of a class of switched uncertain systems may be...
Some results on quadratic stability of switched systems with interval uncertainty (2007)
Zeheb, Ezra, Mason, Oliver, Solmaz, Selim, Shorten, Robert
In this paper we present some results on the quadratic stability of switched systems with uncertain parameters. We show that the quadratic stability of a class of switched uncertain systems may be...
Mason, Oliver, Shorten, Robert, Solmaz, Selim
In this paper we extend the classical Lefschetz version of the Kalman-Yacubovich-Popov (KYP) lemma to the case of matrices with general regular inertia. We then use this result to derive an easily...
Mason, Oliver, Shorten, Robert, Solmaz, Selim
In this paper we extend the classical Lefschetz version of the Kalman-Yacubovich-Popov (KYP) lemma to the case of matrices with general regular inertia. We then use this result to derive an easily...
Mason, Oliver, Shorten, Robert, Solmaz, Selim
In this paper we extend the classical Lefschetz version of the Kalman-Yacubovich-Popov (KYP) lemma to the case of matrices with general regular inertia. We then use this result to derive an easily...
Graph theory and networks in biology (2007)
In this paper, we present a survey of the use of graph theoretical techniques in Biology. In particular, we discuss recent work on identifying and modelling the structure of bio-molecular networks,...
General Inertia and Circle Criterion (2006)
Solmaz, Selim, Mason, Oliver, Shorten, Robert
In this paper we extend the well known Kalman-Yacubovic-Popov (KYP) lemma to the case of matrices with general regular inertia. We show that the version of the lemma that was derived for the case of...
General Inertia and Circle Criterion (2006)
Solmaz, Selim, Mason, Oliver, Shorten, Robert
In this paper we extend the well known Kalman-Yacubovic-Popov (KYP) lemma to the case of matrices with general regular inertia. We show that the version of the lemma that was derived for the case of...
General Inertia and Circle Criterion (2006)
Solmaz, Selim, Mason, Oliver, Shorten, Robert
In this paper we extend the well known Kalman-Yacubovic-Popov (KYP) lemma to the case of matrices with general regular inertia. We show that the version of the lemma that was derived for the case of...
Graph Theory and Networks in Biology (2006)
In this paper, we present a survey of the use of graph theoretical techniques in Biology. In particular, we discuss recent work on identifying and modelling the structure of bio-molecular networks,...
On the quadratic stability of switched interval systems: Preliminary results (2005)
Zeheb, Ezra, Mason, Oliver, Solmaz, Selim, Shorten, Robert
In this paper we present some preliminary results on the quadratic stability of switched systems with uncertain parameters. We show that the quadratic stability of a class of switched uncertain...
On the quadratic stability of switched interval systems: Preliminary results (2005)
Zeheb, Ezra, Mason, Oliver, Solmaz, Selim, Shorten, Robert
In this paper we present some preliminary results on the quadratic stability of switched systems with uncertain parameters. We show that the quadratic stability of a class of switched uncertain...
On the quadratic stability of switched interval systems: Preliminary results (2005)
Zeheb, Ezra, Mason, Oliver, Solmaz, Selim, Shorten, Robert
In this paper we present some preliminary results on the quadratic stability of switched systems with uncertain parameters. We show that the quadratic stability of a class of switched uncertain...
Stability Criteria for Switched and Hybrid Systems (2005)
Robert Shorten, Fabian Wirth, Oliver Mason, Kai Wulff, Christopher King
The study of the stability properties of switched and hybrid systems gives rise to a number of interesting and challenging mathematical problems. The objective of this paper is to outline some of...
Measuring the Attitudes of Human Service Professionals Toward Deafness (2004)
Cooper, Alexandra., Rose, John., Mason, Oliver.
American Annals of the Deaf - Volume 148, Number 5, Spring 2004
Mason, Oliver, Startup, Mike, Halpin, Sean, Schall, Ulrich, Conrad, Agatha, Carr, Vaughan
Recently developed criteria have been successful at identifying individuals at imminent risk of developing a psychotic disorder, but these criteria lead to 50–60% false positives. This study...
Mason, Oliver, Startup, Mike, Halpin, Sean, Schall, Ulrich, Conrad, Agatha, Carr, Vaughan
Recently developed criteria have been successful at identifying individuals at imminent risk of developing a psychotic disorder, but these criteria lead to 50–60% false positives. This study...
On common quadratic Lyapunov functions for stable discrete-time LTI systems (2004)
Mason, Oliver, Shorten, Robert
This paper deals with the question of the existence of weak and strong common quadratic Lyapunov functions (CQLFs) for stable discrete‐time linear time‐invariant (LTI) systems. The main...
This is a set of re-usable components implemented as Java Beans. They cover tokenisation, sentence splitting, parts of speech tagging and phrase recognition. More components are under development.
Tagging Romanian Texts: a Case Study for QTAG, a Language Independent Probabilistic Tagger (1998)
This paper describes an experiment on tagging Romanian using QTAG, a parts-of-speech tagger that has been developed originally for English, but with a clear separation between the (probabilistic)...
Wireless ATM Radio Access Layer Requirements (1996)
Damian Gilmurray, Source Damian Gilmurray, Alan Jones, Oliver Mason, John Naylon, John Porter
: This contribution proposes a set of requirements for the Radio Access Layer of a Wireless ATM system. It is in response to the request for requirements made in [1]. These requirements are based on...