Abstract
Structural change analysis has an important tradition in economic theory. However, up to the present date, no attempt had been made to provide an overall survey on the matter. This paper aims to fill this gap. To this end, bibliometric methods were applied, combining 9703 citations from the area's 'seed journal' with a review of 910 abstracts of all theoretical and empirical articles on structural change that were published over the past 40 years in the journals indexed in the Econlit. We testify the recent rise of interest in structural change where technological issues gained increasing relevance. The 1990s witnessed a spurt in formal work, but more recently such trend was not confirmed; on the contrary, there has been a strong impetus towards empirically led work. Our analysis further reveals that most contributions put great emphasis on technology-driven growth and lack an appropriate treatment of the demand side.

Abstract
In this paper we analyze the magnitude of this propensity in engineering and economics/business courses. The reason for such focus is that traditionally these courses are viewed as the ones concentrating individuals that are more likely to create new ventures. The empirical results, based on a large-scale survey of 2430 final-year students, reveal that no statistical difference exists in entrepreneurial potential of economics/business and engineering students, and that these two latter groups have lower entrepreneurial potential than students from other courses. This result proves to be quite unfortunate given the focus that previous studies have placed on these two majors, and the fact that a substantial part of entrepreneurial education is undertaken in business and engineering schools.

Abstract
Although there is a considerable amount of empirical evidence on inter-firm collaborations within technology-based industries, there are only a few works focussing on R&D cooperation by low-tech firms, especially small and medium-sized enterprises (SMEs). Providing further and new evidence based on a recently built database of CRAFT projects, this study analyses the relationship between technology and proximity in international R&D networks using HOMALS and statistical cluster techniques. The resulting typology of international cooperative R&D projects highlights that successful international cooperative R&D projects are both culturally/geographically closer and distant. Moreover, and quite interestingly, geographically distant projects are technologically more advanced whereas those located near each other are essentially low-tech. Such evidence is likely to reflect the tacit-codified knowledge debate boosted recently by the information and communication technology (ICT) "revolution" emphasized by the prophets of the "Death of Distance" and the "End of Geography".

Abstract
This article analyzes price competition in it duopolistic newspaper industry. where politically differentiated newspapers compete in 2 distinct markets: circulation and advertising. Assuming that 1 of the newspapers represents the "voice of the majority," the theory of the circulation spiral is investigated and whether the interdependence between newspapers' demands in the circulation and advertising markets favors the majority's newspaper to the detriment of the minority's newspaper is investigated.

Abstract
Neste artigo é desenvolvido um modelo de crescimento baseado no progresso tecnológico endógeno, em que o crescimento econômico é induzido por melhorias contínuas na qualidade de cada produto diferenciado. A inovação, "motor" do crescimento, tem como "combustível" essencial o capital humano. Partindo dos modelos de base de Grossman e Helpman (1991a, 1991b), mas considerando, diferentemente, um índice de consumo constituído por bens diferenciados e um bem homogêneo, o modelo proposto destaca a influência determinante da procura no crescimento econômico, aspecto negligenciado pela literatura do crescimento endógeno. Do esforço de modelização decorre que consumidores pouco sofisticados, com reduzida preferência por produtos diferenciados em termos de qualidade, geram, seguramente, incentivos insuficientes para a investigação, enquanto que consumidores mais sofisticados podem gerar excesso de incentivos. Assim, se a quota dos produtos diferenciados na procura estiver positivamente correlacionada com o nível de desenvolvimento do país, então países menos desenvolvidos tendem a apresentar taxas de inovação relativamente reduzidas, ao contrário de países mais desenvolvidos, em que essas taxas podem até ser (socialmente) demasiado elevadas.

Abstract
The importance of promoting innovation has been elevated up to a status of official standard since the Lisbon European Summit in 2000. Here research and development (R&D) has been singled out as an essential element of the foundation on which innovation could be built. R&D has been a growing area of investigation namely at level of firms micro studies aimed at uncovering firms’ innovation capability. At the macro level, the relevance of R&D for countries’ innovation capability has been, in a dynamic perspective, more often presumed rather than effectively tested. This latter limitation is, to a large extent, explained by the paucity of aggregated continuous time series on innovation indicators specifically those based on R&D expenditures. This paper aims at filling this gap by providing an estimate of the Portuguese innovation capability over the two last four decades based on the accumulated R&D efforts. Such indicator, albeit preliminary, will desirably endorse new investigation on the Portuguese catching-up process and, in this way, might inform present and future public programs related to R&D policies in particular and innovation policies in general.