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Even more intensely since the recession, employment conditions deteriorated, and welfare systems continued their reforming processes. Southern European countries saw their labour market situation worsened. Immigrants were one of the social groups more affected by high unemployment, informal and precarious working conditions. The article focuses on the main groups of immigrants in Portugal (Brazilians,...
Eine sichtbare Einwanderungsbevölkerung mit einer substantiellen Zahl von Immigranten aus verschiedenen Ländern ist in Portugal ein Phänomen jüngeren Datums. In der Tat blieb die Zahl der in Portugal lebenden Einwanderer bis Mitte der siebziger Jahre unter 30.000. Die Mehrzahl waren spanische Staatsangehörige oder Portugiesen, die zuvor ausgewandert waren und dabei die Staatsangehörigkeit des Ziellandes...
Wireless optical communications are emerging as a viable solution for high-speed data transmission over short ranges in the ocean, complementing mainstream acoustic communication systems that operate over much longer ranges, but at lower data rates. The current drive to develop cooperative autonomous vehicular systems to carry out surveying and other complex missions in the ocean critically depends...
This paper describes a new class of autonomous marine vehicles named Medusa and highlights their role in a number of EU projects addressing multiple vehicle scenarios. The MEDUSA vehicles, with surface and diving versions, were designed and built at the Institute for Systems and Robotics, IST, Univ. de Lisboa, Portugal as a result of an effort aimed at affording researchers and practitioners of marine...
The EU MORPH project advances the use of a formation of five autonomous marine vehicles for mapping and scientific surveying of challenging, unstructured underwater environments as a means to overcome the limitations imposed by current single-vehicle based technology. We describe the test scenarios envisioned in the project and the requirements and constraints that they impose on the cooperative navigation...
Migrationsprozesse werden bekanntlich von einer Vielzahl von Makro- und Mikrostrukturen sowie von zwischen diesen beiden Ebenen liegenden Institutionen beeinflusst. Die Makrostrukturen hängen von der politischen Ökonomie der Weltmärkte, den zwischenstaatlichen Beziehungen sowie den legislativen und politischen Strukturen der Staaten ab, die Weggang, Ankunft und Bleibedauer der Migranten regeln. (Castles/Miller...
The EC MORPH project, described in [1], proposes a novel concept of an underwater robotic system that emerges from the integration, albeit in a non-physical manner, of several different mobile robot-modules with distinct and complementary resources. This approach aims to afford end-users efficient tools to map the underwater environment with great accuracy in situations that defy existing technology:...
Cognitive Autonomous Diving Buddy (CADDY) is an FP7 project initiated in February 2014. The key objectives of the project are to develop, implement, and demonstrate in the course of missions at sea the efficacy of a number of innovative systems to assist human divers during the execution of demanding scientific and commercial activities in hazardous underwater environments. At the core of CADDY is...
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