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This study aims to investigate the effect of bismuth addition (up to 30 Wt%) on the microstructure and electrical conductivity of a commercial lead-free alloy (SAC405) near the solder/substrate soldered joint. The system under study is referred in this work as (SAC405 + xBi)/Cu, as Cu is the selected substrate in which the solder was casted. The electrical resistivity of this system was investigated, considering Bi addition effect on the local microstructure and chemical composition gradients within that zone.

Solder joints between Cu substrate and SAC405 alloy with different levels of Bi were produced. The electrical conductivity along the obtained solder/substrate interface was measured by four-point probe method. The microstructure and chemical compositions were evaluated by scanning electron microscopy/energy dispersive spectroscopy analysis.

Two different electrical resistivity zones were identified within the solder interface copper substrate/solder alloy. At the first zone (from intermetallic compound [IMC] until approximately 100 μm) the increase of the electrical resistivity is gradual from the substrate to the solder side. This is because of the copper substrate diffusion, which established a chemical composition gradient near the IMC layer. At the second zone, electrical resistivity becomes much higher and is mainly dependent on the Bi content of the solder alloy. In both identified zones, electrical resistivity is affected by its microstructure, which is dependent on Cu and Bi content and solidification characteristics.

A detailed characterization of the solder/substrate zone, in terms of electrical conductivity, was done with the definition of two variation zones. With this knowledge, a better definition of processing parameters and in-service soldered electronic devices behavior can be achieved.

I will present an example of a shared decision-making process between adults and children: a case study of an intergenerational project built collaboratively between a group of artists, teachers, their current and former students, their families and the inhabitants of a pedestrian square in Lisbon's city centre.

The project began as weekly meetings that took place in the ruins of an abandoned house that only had walls and a cemented floor. The participants had to climb up the wall to enter it. Eventually, together they decided to renovate the ruins, paint them, garden in them and to research what had happened to that building. They began a newsletter with photos, drawings and texts that was compiled into a book, which was published and released in a public event.

The results were obtained by the triangulation of participatory observation data, interviews with the children and adults, written and filmed records. I will show how the project stimulated a learning process that was collective and active for all participants. As a consequence of the use of child-centred practice, the children saw their collaboration in the structuring of the meetings as a moment when the traditional school hierarchy was minimised and they felt their knowledge valued, with impact in their school performance.

This text is the result of an extensive bibliographical research on the development of Childhood Studies in various regions of Brazil based on the understanding that childhood is a social discursive construction, as well as human rights, and both concepts are interlinked when the subject in focus is the children’s rights. According to research data while advances in the concept of childhood have supported specific child protection policies, the issue of marginalization and inequalities affecting children is some of the central matters developed within childhood studies in Brazil. In this article, we map the advances of childhood studies in Brazil and its relation to children’s rights. However, we may state that neither childhood nor children’s rights are still a reality for all Brazilian children, especially when considering other markers that have challenged the rights of our children, such as race, ethnicity, social class, and gender.

Prior studies on entrepreneurial intention have shown that different orientations exist regarding entrepreneurial engagement: one looking at the growth of a venture (growth-oriented) and the other looking at the maintenance of an entrepreneurial autonomy (independence-oriented). Filling a gap in the literature concerning the reasons why individuals develop different orientations of entrepreneurial intention, this study revolves around achievement goal motivation (mastery, performance and avoidance approaches) and self-regulatory modes (locomotion and assessment), since both are thought to be at the origin and maintenance of an action willingness.

In a sample of 209 undergraduates, we administered a structured questionnaire at the beginning of an elective entrepreneurship education programme. Through a set of hierarchical regressions we examined the specific role of achievement goal motivation and regulatory modes in relation to the two orientations of intention.

Our findings show that, on the one hand, growth-oriented intention is related to a performance approach and both locomotion and assessment regulatory modes. On the other hand, independence-oriented intention is related to an avoidance approach.

These results illuminate the theoretical connections between entrepreneurial intention and motivation and provide implications for entrepreneurship education and the relationship between intention and consequent behaviour.

This study is among the first to provide an empirical exploration of the motivational and regulatory drivers that lie beneath a growth-oriented and an independent-oriented intention, offering a theoretical explanation about the development of different intentions towards venture creation. Our findings illuminate on the urgency to consider entrepreneurial intention as a multi-dimensional construct if we are to understand the intention-behaviour nexus.

This chapter explores the origins, development, and organization of the main Portuguese capitalist groups throughout the fascist dictatorship, the Carnation Revolution, and the neoliberal European integration until the onset of the financial crisis of 2008. The Portuguese experience confirms that, far from the usual neoliberal view that presents the process of accumulation and concentration of capital as the result of fair market mechanisms, large capitalist groups emerge as a combination of three factors: privileged access to finance, State protection, and family inheritance. Furthermore, it is argued that, if capital is considered as embodiment of power relations and not as factor of production, the link between concentration/accumulation of capital and economic growth is appropriately lost. Concentration strategies can have a detrimental effect on the economy. In Portugal, the dominance of these large economic groups contributed to the development of a rentist economic structure that was contrary to the goals of productive and economic development.

Frequent renegotiations within public-private partnership (PPP) have been recognised and affect project efficiency. Literature has focussed on diverse issues associated with renegotiation within PPP, especially in Latin America and Europe. However, a systematic summary what they have already provided appears lacking. Thus, the paper aims to conduct a critical review of publications concerning PPP renegotiation and explore the status quo, future interests and gaps in research.

This study carried out a four-phase literature review research framework to identify the quality PPP-renegotiation articles published from 2003 to 2020. Assessing the full articles for eligibility by providing a structured summary including: background; objectives; data sources; study appraisal; results; limitations; conclusions and implications of key findings. After that, filtering papers associated with PPP renegotiation in terms of the structured summary, and a total of 60 research papers were selected in the database of web of science and Scopus for review.

Methods adopted by researchers, research topics and theoretical foundations of PPP renegotiation research in different disciplines were identified through content analysis. Amongst the popular research topics identified were renegotiation factors, the outcomes with renegotiations, the framework to deal with renegotiations and contract design dealing with renegotiation based on rigid or flexible contracts.

This study contributes to the current body of PPP knowledge by revealing the research trend in the past 20 years. It also points out the directions that the renegotiations of PPP research may go towards in the future. Moreover, this study is very valuable in understanding how governments and concessionaires effectively handle renegotiations.

This descriptive paper seeks to explore the role of Portuguese academics within corporate social responsibility and disclosure (CSR&D) research. It aims to give some insight into the nature and the extent of research on CSR&D being undertaken by Portuguese authors.

This review specifically targeted international journals to see how much Portuguese research had penetrated the international business, management and accounting (BMA) academic discourse. The research that is reported in this paper is based on an electronic search of the online databases which include journals in these areas. The paper reviews journal articles published in BMA journals over the period 1998 to 2008.

The paper reaches several conclusions: the volume of published research in international journals is still very low; most papers focus on CSR; research is overwhelmingly empirical in orientation; and most papers focus on Portugal. Hence, there is great scope for expanding the amount of research on CSR&D in Portugal, as well as improving the diversity of its content and its geographical coverage.

The paper is not expected to be a complete study, but rather a stimulus for future research. It is intended to provide a basis for comparison with further studies on CSR&D research in Portugal with studies from other geographical areas.

The paper provides the first survey on CSR&D research in Portugal. It also provides the first opportunity to reflect on the current state of these still emerging academic fields.

POWER is an ontology of political processes and entities. It is designed for tracking politicians, political organizations and elections, both in mainstream and social media. The aim of this paper is to propose a data model to describe political agents and their relations over time.

The authors propose a data model to describe political agents (politicans, political instutions and political associations) and their relations over time. The model is formalized as an ontology using the RDF format and the population is performed in two steps. First, a bootstrap process loads data collected from authoritative sources. Then, the ontology is enriched with alternative media names extracted from the web.

The ontology is published as a public resource following the guidelines of linked data and semantic web standards can be accessed via SPARQL endpoint.

The authors have developed an ontology for the political domain tailored to aid in the tasks of named entity recognition and resolution. It represents the complexity and dynamic nature of relations between political agents (politicians, political associations and political institutions) over time.