Browsing by Issue Date, starting with "2013-06"
Now showing 1 - 7 of 7
Results Per Page
Sort Options
- Rethinking the boundaries of labour law regarding the need of regulation of independent workPublication . Lambelho, AnaThe aim of this research is, based on the analysis of several articles of Portuguese Labour Code regarding independent work, in order to prevent fraudulent situations, to reflect about an eventual need of rethinking the boundaries of labour law in a double sense: i) whether the legal subordination must continue to be the normative axis of Labour Law, despite the changing forms of productive organization; ii) whether the scope of Labour Law should be extended to situations where there is no legal subordination but where there are other forms of dependence. The urgency of the first issue comes from the fact that the legal subordination is a notion that comes already from the times of capitalist production. Outsourcing and the business networking organization enhanced by new technologies, implying a bigger segmentation of the attributes and responsibilities of the employer, changed the paradigm on which rested the legal subordination, either from the side of who holds the power of direction, as from the side of who must obey. The legal subordination presupposes a "dominant social type" which seems to be called into question, or at least changed, by new forms of business organization. Although changes in the figures of the employer and the worker are impeding implementation and operationalization of that concept, we understand that it is endowed with sufficient elasticity to remain the distinctive element of the employment relationship. Regarding the second question, we think the Labour Law does not provide adequate legal protection to independent work neither to economically dependent autonomous work, although we defend a specific regulation of these last two types of work.
- Complex Boosts: A Hermitian Clifford Algebra ApproachPublication . Ferreira, Milton; Sommen, FranciscusThe aim of this paper is to study complex boosts in complex Minkowski space-time that preserves the Hermitian norm. Starting from the spin group Spin$^+(2n,2m,\bkR)$ in the real Minkowski space $\bkR^{2n,2m}$ we construct a Clifford realization of the pseudo-unitary group U$(n,m)$ using the space-time Witt basis in the framework of Hermitian Clifford algebra. Restricting to the case of one complex time direction we derive a general formula for a complex boost in an arbitrary complex direction and its $KAK-$decomposition, generalizing the well-known formula of a real boost in an arbitrary real direction. In the end we derive the complex Einstein velocity addition law for complex relativistic velocities, by the projective model of hyperbolic $n-$space.
- Adaptações dos processos de reconhecimento, validação e certificação de competências a alunos surdos : um estudo de casoPublication . Roussos, Cecília Maria Soares da Silva; Barreto, Maria Antónia Belchior Ferreira; Santos, Tânia Cristina Simões de Matos dos
- Refletindo sobre a prática pedagógica : uma experiência com abordagens educativas que privilegiam o contacto com a obra de artePublication . Feijoeiro, Catarina Vieira; Magueta, Lúcia Grave
- Regional planning insights from a portuguese bi-regional input-output model – the potential impact of agri food industryPublication . Sargento, Ana; Ramos, Pedro; Barata, Eduardo; Cruz, LuísIn Portugal, the public debate at regional level is typically engaged in the discussion of asymmetries amongst the ‘interior’ and the ‘coast’. What is often discussed, with political and social relevance, is the extent of the interior’s delay (in terms of development) comparatively to the coastal region, and into what extent the dynamics of the economy, or eventually the ‘bias’ introduced by public policies, contributes to this drawback. Interestingly, however, the Portuguese regional science has miscarried this debate, largely on the grounds that the official statistics do not include this cleavage. Indeed, the design of the NUTS II in Portugal splits the country horizontally, forgetting the vertical gap that splits the interior regions from the coastal ones. The first objective of this paper is therefore to refocus the debate - in scientific terms – on the actual territorial disparity in Portugal: the contrast Coast-Interior. Accordingly, this paper starts by presenting the structure of a bi-regional Input-Output (IO) model for the Portuguese Economy. We consider a rectangular IO model (431 products by 125 industries), decomposing the Portuguese economy into two regions with comparable territorial sizes (the Coastal Region, comprising 44% of the Portuguese continental area, and the Interior Region). the model is ‘closed’ for the private consumption of households below 65 (which is supposed to be endogenous, as it depends on regional employment and therefore on households’ earnings. Multi-regional IO models describe the inter-sectoral dependencies both within the region and between the regions. The main aim is then to assess how the effects of a shock that hits only one of the regions are ‘distributed’ among the two regions. In particular, we intend to analyse at a greater detail the role of the agri-food sector in the Interior Region. Overall results illustrate the dependence of the Interior on the Coastal region, and that the (positive or negative) effects of a shock that hits the Interior Region tend to leak significantly to the Coastal Region, while an exogenous event in the Coastal Region tends to see its effects relatively more contained within the region.Thus, this analysis can be particularly relevant to policy-makers in dealing with regional and territorial planning, as they are better informed about the root causes of some outcomes. Accordingly, a summary of the key lessons learned and a discussion of their policy relevance, both at regional and national levels, will be offered.
- The influence of corporate social responsibility’social dimension on employability : effects of training practices in Portuguese tourism sectorPublication . Ferraz, Francisco António Vaz Guedes Delgado; Gallardo-Vázquez, DoloresEuropean growth includes the priority of employment in general, intelligent, sustainable and inclusive. The study of strategies that will enable push this issue is important and will contribute to its strengthening and development. Corporate Social Responsibility plays a relevant role in different dimensions (social, economic and environmental). In this field, and an internal component, the valuation of human resources in organizations is highlighted as a tool between employees and the labor market. Another important aspect is to perceive the meaning that companies attach to these valuation practices of its resources. Thus, the analysis of the perception of senior management of organizations will allow to understand their views and to reflect on future behavior and ability to implement these strategies in human resource training company. This study seeks evidence on the effect of training on employability of workers from a survey of 213 tourism accommodation establishments, based on perceptions of their managers. The results obtained indicate a dual effect of training on employability of workers and their retention, and in the opposite effect, even more expressive, to promote mobility.
- Análise da Árvore de falhas do processo de cozedura da Cerâmica F. Santiago, S.A.Publication . Silva, Catarina Gomes da; Silva, Carlos Manuel GomesCom a crescente necessidade de criação de valor dos seus produtos, as indústrias, para se manterem competitivas, têm que se atualizar e conceber métodos e técnicas que potenciem o aumento da qualidade do seu processo produtivo. Por esta via, a existência de ferramentas auxiliares que possam ajudar os gestores a preverem possíveis falhas nos seus processos de produção será, certamente, uma mais-valia com impactos positivos para toda a organização. Este projeto consiste no estudo e aplicação da técnica de Árvore de falhas no processo produtivo de uma empresa no setor da cerâmica para a construção civil, visando compreender os eventos e as suas interligações que conduzem à não conformidade do produto final. Após caracterização do processo produtivo da empresa, apresentam-se os resultados provenientes da análise do estudo realizado. São identificados os eventos, e as suas interligações com base nos resultados obtidos. São ainda, propostas medidas que visam minimizar a ocorrência de falhas. Com a realização deste projeto, pretende-se contribuir, de modo aplicado, para o aumento da eficiência e da qualidade de produção da empresa em estudo.