The time-varying microstructure of sleep EEG spindles may have clinical significance in dementia studies. In this work, the sleep spindle is modeled as an AM-FM signal and parameterized in terms of six parameters, three quantifying the instantaneous envelope (IE) and three quantifying the instantaneous frequency (IF) of the spindle model. The IE and IF waveforms of sleep spindles from patients with dementia and normal controls were estimated using the time-frequency technique of complex demodulation (CD). Sinusoidal curve-fitting using a matching pursuit (MP) approach was applied to the IE and IF waveforms for the estimation of the six model parameters. Specific differences were found in sleep spindle instantaneous frequency dynamics between spindles from dementia subjects and spindles from controls.

The modelling of fractional linear systems through ARMA models is addressed. To perform this study, a new recursive algorithm for impulse response ARMA modelling is presented. This is a general algorithm that allows the recursive construction of ARMA models from the impulse response sequence. This algorithm does not need an exact order specification, as it gives some insights into the correct orders. It is applied to modelling fractional linear systems described by fractional powers of the backward difference and the bilinear transformations. The analysis of the results leads to propose suitable models for those systems.

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Generalised fractional centred differences and derivatives are studied in this Chapter. These generalise to real orders the existing ones valid for even and odd positive integer orders. For each one, suitable integral formulations are presented. The limit computation inside the integrals leads to generalisations of the Cauchy derivative. Their computations using a special path lead to the well known Riesz potentials. A study for coherence is done by applying the definitions to functions with Fourier transform. The existence of inverse Riesz potentials is also studied.

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Some of the phenomena where the “globalization” concept is applied include the internationalization of markets, globalization of culture, polítical hegemony of world by some states, or groups of states, the increasing power of supranational institutions, and the development of a global division of labour. A starting point to understand the global division of work is the study of how companies are re-structuring, once they are the key-actors in the decision on which work should be found and where. The “value chains” describe each step in the productive process of a final product or service. Separated units of value chains can be in the same company (in-house) or in different companies (outsourced). Similarly they can be in a same local, or in other location. Normalization of business processes, combined with digitalization of information and the development of telecommunication networks made possible the tele-mediated work. This paper presents results from the European WORKS project, where are studied Portuguese cases of firms that integrate globalized value chain, and are analized the implications on work organization models and the (new) professional structures.

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In this working paper is presented information on the Portuguese labour market developed with the support of the European project WORKS-“Work organisation and restructuring in the knowledge society”. Is still a on the process article and thus commentaries are welcome. The structure is based on the following topics: a) The employment policy (Time regimes - time use, flexibility, part-time work, work-life balance -, and the work contracts regimes – wages, contract types, diversity); b) Education and training (skilling outcomes, rules on retraining and further training, employability schemes, transferability of skills); c) Equal opportunities (relevance of equal opportunity regulation for restructuring outcomes, the role of gender and age regulation); d) Restructuring effects (policy on transfer of personnel, policy on redundancies, and participation or voice in restructuring).

In this working paper is presented information on the Portuguese labour market developed with the support of the European project WORKS-“Work organisation and restructuring in the knowledge society”. Is still a on the process article and thus commentaries are welcome. The structure is based on the following topics: a) The employment policy (Time regimes - time use, flexibility, part-time work, work-life balance -, and the work contracts regimes – wages, contract types, diversity); b) Education and training (skilling outcomes, rules on retraining and further training, employability schemes, transferability of skills); c) Equal opportunities (relevance of equal opportunity regulation for restructuring outcomes, the role of gender and age regulation); d) Restructuring effects (policy on transfer of personnel, policy on redundancies, and participation or voice in restructuring).

Most of the discussion and controversy on organisation of work concepts has been referenced to the manufacturing industry along the 20th century: it started with the concept of “scientific management” from Taylor, and continued with the new ideas on the importance of human factors as Mayo pointed out in the 1930s. Immediately after the 2nd World War Friedmann studied the human problems related to new manufacturing technologies and automation. And the late 1950 and 1960s were decades of strong debate on the socio-technics with the research at Tavistock Institute of London and the emergence of national programmes on new forms of work organisation. At the end of the last century the concept of collaborative work was developed together with the definition(s) of information systems and organisational design. However, the interest came from other production activities, like the services. This article analyses the approaches developed on these debates on the collaborative work and information system and its application to the manufacturing industry.

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If indicators of international competitivity of the Portuguese industry reveal very strong weaknesses in the field of education and vocational training, the achievement of a solution is not based only (and should not!) in a decisive increase of investment and support in the education and training system. It seem not logical to think in that way, once normally when one tries to solve a problem that is done in the context of that same problem. Eventually there are other strategies. Which are, then, the fields where is necessary to orient the investiment to improve an industrial competitivity? To try to answer this question, we analise one of the sectors that have contributed the most for an improvement of the Portuguese economical performance, and for a true innovative process as in terms of industrial product, or in terms of manufacturing and distribution processes. Is the automotive sector where that happens, taken in its two most important sub-sectors: the one of automobile manufacturing and assembly, and the one of components manufacturing.

If indicators of international competitivity of the Portuguese industry reveal very strong weaknesses in the field of education and vocational training, the achievement of a solution is not based only (and should not!) in a decisive increase of investment and support in the education and training system. It seem not logical to think in that way, once normally when one tries to solve a problem that is done in the context of that same problem. Eventually there are other strategies. Which are, then, the fields where is necessary to orient the investiment to improve an industrial competitivity? To try to answer this question, we analise one of the sectors that have contributed the most for an improvement of the Portuguese economical performance, and for a true innovative process as in terms of industrial product, or in terms of manufacturing and distribution processes. Is the automotive sector where that happens, taken in its two most important sub-sectors: the one of automobile manufacturing and assembly, and the one of components manufacturing.

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