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Publicações

Publicações por CTM

2010

Training in oncoplastic surgery: An international consensus. The 7th Portuguese Senology Congress, Vilamoura, 2009

Autores
Cardoso, MJ; Macmillan, RD; Merck, B; Munhoz, AM; Rainsbury, R;

Publicação
BREAST

Abstract
Oncoplastic Breast Surgery (OPBS) is becoming an integral part of breast cancer management, but few surgeons have received formal training in these techniques. An International Symposium has recently debated the key issues which impact on training and specialisation in OPBS, as well as patient access to these procedures. The Symposium concluded that increasing the availability of OPBS is a major challenge, which demands much closer collaboration and cooperation between breast and plastic surgeons, backed up by new training schemes, new curricula and new guidelines.

2010

Reflections on Music Programming for Conferences: The Case of SMC 2009

Autores
Guedes, C; Rebelo, P;

Publicação
COMPUTER MUSIC JOURNAL

Abstract
The inclusion of the presentation of music in a conference dealing with technical or cultural aspects of that same music has evolved significantly. An important aspect of music presentation is the opportunity it provides for public engagement. Conferences that have a music program often follow two different approaches, or a combination of these that includes the creation of a music committee inways similar to a scientific committee, or the invitation of curators to select the program for one or more concerts in the conference. Models of new music creation have significantly expanded to include close composer-performer collaboration which in some cases results in coauthorship. The conference-plus-festival format needs to be able to expand and refine the process of submitting a work for public presentation in order to adequately exhibit the variety of approaches to music production and dissemination.

2010

Control of complex Ginzburg-Landau equation eruptions using intrapulse Raman scattering and corresponding traveling solutions

Autores
Facao, M; Carvalho, MI; Latas, SC; Ferreira, MF;

Publicação
PHYSICS LETTERS A

Abstract
The eruption solitons that exist under the complex cubic-quintic Ginzburg-Landau equation (CGLE) may be eliminated by the introduction of a term that in the optical context represents intrapulse Raman scattering (IRS) The later was observed in direct numerical simulations and here we have obtained the system of ordinary differential equations and the corresponding traveling solitons that replace the eruption solutions In fact we have found traveling solutions for a subset of the eruption CGLE parameter region and a wide range of the IRS parameter However for each set of CGLE parameters they are stable solely above a certain threshold of IRS

2010

Soliton self-frequency shift: Self-similar solutions and their stability

Autores
Facao, M; Carvalho, MI; Parker, DF;

Publicação
PHYSICAL REVIEW E

Abstract
Ultrashort pulse propagation in fibers is affected by intrapulse Raman scattering (IRS) which causes both a linear frequency downshift and a quadratic displacement of the peak pulse, as functions of the propagation distance. This effect has been known and treated by perturbation methods applied to the nonlinear Schroumldinger equation since the period of intense research on soliton propagation. Here, we find solutions of the model equation using an accelerating self-similarity variable and study their stability. These solutions have Airy function asymptotics which give them infinite energy. For small IRS, the algebraically decaying tail is negligible and these solutions are a very good approximation of the profiles observed in the full equation simulations. For strong IRS (but beyond the regime in which the evolution equation is valid for silica fibers), the self-similar pulses have noticeable left tails exhibiting Airy oscillations. Whenever their truncated forms are used as initial conditions of the full equation, they experience amplitude decay and show left tails that are consistent with radiation escaping from the central pulse. These observations are interpreted as being the effects of a continuum constitution of the infinite left tail.

2010

Propagation of Airy-related beams

Autores
Carvalho, MI; Facao, M;

Publicação
OPTICS EXPRESS

Abstract
New types of finite energy Airy beams are proposed. We consider two different types of beams, namely, beams that are obtained as blocked and exponentially attenuated versions of Airy functions Ai and Bi, and beams of finite width but having the Airy functions typical phase. All of them show very interesting properties, such as parabolic trajectories for longer propagation distances, profile evolution exhibiting less diffraction, or better definiteness of the main peak, when compared with other finite energy Airy beams studied before. (C) 2010 Optical Society of America

2010

An Interactive Documentary Manifesto

Autores
Almeida, A; Alvelos, H;

Publicação
INTERACTIVE STORYTELLING

Abstract
In the last few years the word "documentary" has been loosely used to describe multimedia pieces that incorporate video no matter its nature, technique, language or scope, taking advantage of the fuzzy and fragile boundaries of the documentary definition. The present manifesto aims to give a brief insight on the interactive documentary arena and also to sketch some production remarks for future interactive documentary productions.

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