Transições de signos: os motivos representados num mosaico da Ulla romana de Pisões

Este trabalho é um breve percurso por alguma iconografia da Antigüidade Clássica e Tardia, tendo como ponto de partida as figurações patentes num mosaico de Pisões. A comunicação oral do tema apoiou-se num pequeno corpus de imagens da Antigüidade, recolhido no nosso território que, no presente trabalho, será, na sua maioria, referido em notas. A uilla romana de Pisões localiza-se a cerca de 10 Km a Sul de Beja, na freguesia de S. Tiago Maior. A sua par urbana ou residência do proprietário apresenta uma grandeza e complexidade arquitectônicas condizente com a riqueza decorativa dos seus pavimentos musivos, caracterísdca das uillae do Baixo Império. A sua ocupação ter-se-á prolongado até época bastante avançada da Andguidade, de acordo com materiais nela recolhidos, datáveis do séc. I ao VIII d.c

Democratic dialogue and collective learning in the context of self-managed teams

This paper provides a longitudinal, empirical view of the multifaceted and reciprocal processes of organizational learning in a context of self-managed teams. Organizational learning is seen as a social construction between people and actions in a work setting. The notion of learning as situated (Brown & Duguid 1989, Lave& Wenger 1991, Gherardi & al. 1998, Easterby-Smith & Araujo 1999, Abma 2003) opens up the possibility for placing the focus of research on learning in the community rather than in individual learning processes. Further, in studying processes in their social context, we cannot avoid taking power relations into consideration (Contu & Willmott 2003). The study is based on an action research with a methodology close to the ‘democratic dialogue’ presented by Gustavsen (2001). This gives a ground for research into how the learning discourse developed in the case study organization over a period of 5 years, during which time the company abandoned a middle management level of hierarchy and the teams had to figure out how to work as self-managed units. This paper discusses the (re)construction of power relations and its role in organizational learning. Power relations are discussed both in vertical and horizontal work relations. A special emphasis is placed on the dialectic between managerial aims and the space for reflection on the side of employees. I argue that learning is crucial in the search for the limits for empowerment and that these limits are negotiated both in actions and speech. This study unfolds a purpose-oriented learning process, constructing an open dialogue, and describes a favourable context for creative, knowledge building communities.

Segmentation of striatal brain structures from high resolution pet images

Dissertation presented at the Faculty of Science and Technology of the New University of Lisbon in fulfillment of the requirements for the Masters degree in Electrical Engineering and Computers