Vacuum Stability in two-Higgs doublet models (2009)
Sa, Nuno Barros E, Barroso, Augusto, Ferreira, Pedro, Santos, Rui
In this work we review the status of tree-level vacuum stability in general two-Higgs doublet models. We also discuss the problem of Normal minima in some classes of potentials. In some of these...
Variability of myocardial perfusion dark rim Gibbs artifacts due to sub-pixel shifts (2009)
Ferreira, Pedro, Gatehouse, Peter, Kellman, Peter, Bucciarelli-Ducci, Chiara, Firmin, David
Abstract Background Gibbs ringing has been shown as a possible source of dark rim artifacts in myocardial perfusion studies. This type of artifact is usually described as transient, lasting a few...
Variability of perfusion dark rim artifacts due to Gibbs ringing (2009)
Ferreira, Pedro, Gatehouse, Peter, Kellman, Peter, Bucciarelli-Ducci, Chiara, Firmin, David
No abstract available.
Pedro Ferreira, William Lehr, Lee Mcknight
The evolution of broadband services will depend on the widespread deployment of optical networks. The deployment of such networks will, in turn, help drive increased demand for additional capacity....
Ferreira, Pedro, Gatehouse, Peter, Firmin, David, Bucciarelli-Ducci, Chiara, Wage, Ricardo
No abstract available.
Gerber, Bernhard L, Raman, Subha V, Nayak, Krishna, Epstein, Frederick H, Ferreira, Pedro, Axel, Leon, ...
Abstract In less than two decades, first-pass perfusion cardiovascular magnetic resonance (CMR) has undergone a wide range of changes with the development and availability of improved hardware,...
CHALLENGES ON THE PATH TO REGULAR ONLINE SHOPPING: E-GROCERY SECTOR- UK ABSTRACT (2008)
This paper attempts to uncover significant economic and non-economic demand-side variables, which are driving and hindering B2C (Business to Consumer) e-commerce learning. It investigates the...
Evaluating deterministic motif significance measures in protein databases (2007)
Ferreira, Pedro, Azevedo, Paulo J
Abstract Background Assessing the outcome of motif mining algorithms is an essential task, as the number of reported motifs can be very large. Significance measures play a central role in...
Metformin-induced lactic acidosis: a case series (2007)
Silvestre, Joana, Carvalho, Susana, Mendes, Vitor, Coelho, Luis, Tapadinhas, Camila, Ferreira, Pedro, ...
Abstract Introduction Unlike other agents used in the treatment of type 2 diabetes mellitus, metformin has been shown to reduce mortality in obese patients. It is therefore being increasingly used in...
Observing the temperature of the Big Bang through large scale structure (2007)
Ferreira, Pedro, Magueijo, Joao
It is widely accepted that the Universe underwent a period of thermal equilibrium at very early times. One expects a residue of this primordial state to be imprinted on the large scale structure of...
New infrastructures and frameworks for knowledge creation and diffusion (2007)
In the Information age, the creation, absorption and diffusion of knowledge become fundamental tasks that all economic agents need to master. As a consequence, knowledge management is at the heart of...
New infrastructures and frameworks for knowledge creation and diffusion (2007)
In the Information age, the creation, absorption and diffusion of knowledge become fundamental tasks that all economic agents need to master. As a consequence, knowledge management is at the heart of...
Establishing Fraud Detection Patterns Based on (2006)
Pedro Ferreira, Ronnie Alves, O Belo, Luís Cortesão
Abstract. All over the world we have been assisting to a significant increase of the telecommunication systems usage. People are faced day after day with strong marketing campaigns seeking their...
Discovering telecom fraud situations through mining anomalous behavior patterns (2006)
Ronnie Alves, Pedro Ferreira, O Belo, Joao Lopes
In this paper we tackle the problem of superimposed fraud detection in telecommunication systems. We propose two anomaly detection methods based on the concept of signatures. The first method relies...
Patrick Dineen, Supervisor Prof, Peter Coles, Examiners Prof, Dr. Pedro Ferreira
Thesis submitted to the University of Nottingham
Signal feature extraction for sewing analysis using non-linear tecniques (2003)
Carvalho, Helder, Ferreira, Pedro, Rocha, A. M., Monteiro, João L.
Comunicação apresentada no International Symposium on Industrial Electronics, Rio de Janeiro, Brasil, 9 - 11 Junho 2003.
Patients' priorities with respect to general practice care: an international comparison (1999)
Grol, Richard, Wensing, Michel, Mainz, Jan, Ferreira, Pedro, Hearnshaw, Hilary, Hjortdahl, Per, ...
Background and objectives. Improving the sensitivity of general practice to Patients' needs demands a good understanding of Patients' expectations and priorities in care provision. Insight into...
How Anisotropic is our Universe? (1996)
Bunn, Emory. F., Ferreira, Pedro, Silk, Joseph
Large-scale cosmic microwave background anisotropies in homogeneous, globally anisotropic cosmologies are investigated. We perform a statistical analysis in which the four-year data from the Cosmic...
Metformin-induced lactic acidosis: a case series
Silvestre, Joana, Carvalho, Susana, Mendes, Vitor, Coelho, Luis, Tapadinhas, Camila, Ferreira, Pedro, ...
Input Output Tables for the Management of Water Resources in Islands. The Case of Terceira Island.
Tomaz Dentinho, Pedro Ferreira, Vasco Silva
Islands are attractive places for tourists and most islands can be, sooner or later, requested by an increasing touristic demand. But islands are also places where natural capital has very defined...
General practice care and patients' priorities in Europe: an international comparison
Wensing, Michel, Mainz, Jan, Ferreira, Pedro, Hearnshaw, Hilary, Hjortdahl, Per, Olesen, Frede, ...
The Evolution of International Output Differences (1970-2000): From Factors to Productivity
Pedro Ferreira, Samuel Pessoa, Fernando Veloso
This article presents a group of exercises of level and growth decomposition of output per worker using cross-country data from 1970 to 2000. It is shown that in the early seventies factors of...
Gerber, Bernhard L, Raman, Subha V, Nayak, Krishna, Epstein, Frederick H, Ferreira, Pedro, Axel, Leon, ...
In less than two decades, first-pass perfusion cardiovascular magnetic resonance (CMR) has undergone a wide range of changes with the development and availability of improved hardware, software, and...