The incorporation of a Keggin-type heteropolyanion, the phosphotungstate ([PW12O40](3-)), into polypyrrole has been achieved during the electrochemical preparation of the polymer films in aqueous solution. The redox behaviour of these modified electrodes is described by using cyclic voltammetry (CV) and electrochemical quartz crystal microbalance (EQCM). The data allowed to estimate the doping level that indicates the extent of the heteropolyanion insertion. It is found that the polymer films, in aqueous solution, exhibit sensibility to cations, namely to Na+. (C) 2002 Elsevier Science Ltd. All rights reserved.

Recent studies continue to indicate the existence of a narrow relationship between flexible work organizations and the economic growth, in particular, Sweden and Germany. The measure of this relationship is many times the result of the value added per worker. Therefore, the causes of economic growth must be perceived from the interior of the company (work organization, technology, infrastructures, product design). On the other hand, the capacity of innovation can be perceived by the market through new products and services, and still significant changes with the introduction of new equipment and design of an efficient work organization. In this article it is analyzed the evolution of the productivity and employment levels in Portugal and other European countries, over all, during the decade of 90. An analysis for sector is made still. One verifies often that economic growth can be without employment growth. However, the growth can be obtained when if it reaches bigger added value and the efficiency can be verified when there are diminished costs for a same period of time, although that the labor productivity is also the pointer of the quality of life in a economy, therefore it represents the value produced by the work. Moreover, the total factors productivity is the measure of the technological and organizational progress (don’t includes only the technological investments). It is tried to get and to analyze the available statistics on these dimension in Portugal, concluding that Portugal presents an enterprise structure predominantly based on small and very small companies, a great number of which is market by a weak potential of adaptability, innovation and sustainability. It becomes urgent to take the non-material factors that integrate the productivity dimension, as factors of intervention for a benchmarking that allows a process of sustainable growth.

The Portuguese National Action Plan for Employment (NAP) is the main instrument for the labour market policy. It was adopted in 1998. The NAP transposes to the Portuguese reality the contents of such guidelines, with the adequate adjustments required by the national specificities, establishing objectives, quantified targets and action deadlines, as well as defining new programmes and measures. Therefore, the objectives of the labour market policy were focusing on the promotion of an adequate transition of the youngsters in active life, on the promotion of social and professional insertion and fight against long term unemployment and exclusion, on the improvement of basic and professional qualification of the working population in a perspective of lifelong training, namely as a way to prevent unemployment phenomena, and on the preventive management and follow-up of sectoral restructuring processes.

A propose for this article is to present information on the emergence of the knowledge field of sociology of work and labor studies in Portugal. The period of 1974-1984 produced an interesting bibliography in the fields of social stratification, labor conflicts and social history. However, and since the mid-1980s, significant changes have emerged. There took place an increased theoretical diversity and also there was a major preoccupation with the development of a more professional teaching of the discipline. At this time, the first graduated specialists in Sociology appeared in the labor market since 1980, working in municipalities, industrial firms, public health institutions, schools, or even in research and development (R&D) units. The Portuguese association in this field (APSIOT) organized many scientific meetings, debates with unionists, managers and politicians, beside the regular publication of review “Organizações e Trabalho” (Organization and Work) since 1989. It started the diffusion of a professional culture of sociologists who associate science and their occupation concerning themselves not only with scientific quality, but also with technical competence and social responsibility. At the same time, one could assist to the participation of sociologists in the social and organizational molding of new technologies in order to promote alternative production systems.