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We examine the structure and dynamics of network of scientific international collaborations within North Africa (Morocco, Algeria, Tunisia and Egypt) using both publishing and patent data. Results show that the region has undergone a sustained process of internationalization, which has translated in both an expansion of the network of scientific collaborations and a relative increase in the research output of international teams. At the same time we find the existence of a very limited degree of scientific integration at the regional level, i.e. within Northern Africa. Among the countries examined, Egypt seems to be the most active one in terms of size of research output as well as number and variety of international collaborations. Moreover, Egypt is the most central node of the regional research network and this centrality has considerably grown over time. This increased importance of Egypt as regional research hub is associated with a remarkable increase in the centrality of Saudi Arabia within Egypt’s research network. This holds across a variety of research fields as well as in terms of applied science (as shown by patent data). Overall, these results suggest that the region is undergoing a deep transformation in the structure and composition of scientific collaborations

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This paper reviews the relationship between lags and cycles into classical structures of growth models (see Solow-Swan and Ramsey models). Some remarks and perspectives of research are determined.

This paper empirically investigates how the inter-sectoral knowledge flows affect the international competitiveness of industries, once controlling for both cost and other technological factors. Using patent data on 14 manufacturing industries in 16 OECD countries over the period 1995-2009, we apply a network-based approach to capture the effect of industries' position in the flows of technological knowledge across industries, which we label inter-sectoral knowledge space. We find that (i) centrality and local clustering in the inter-sectoral knowledge space positively affect the export market shares of an industry, (ii) such two effects are rather redundant and, (iii) national-level knowledge flows' impacts on international competitiveness are way stronger than international ones. Network measures of position in the knowledge space are found to be more relevant than standard technological indicators such as patent counts. Our results point to the importance of industries being well located in the stream of knowledge flows, rather than being innovative per-se, and offers an novel yet robust proxy to measure technological factors affecting trade performances. In addition, we find evidence of geographical boundaries of knowledge flows.