This paper sheds light on the role of social networks in the dynamics of a West African labour market, i.e. in the transitions from unemployment to employment, from wage employment to self-employment, and from self-employment to wage employment. It investigates the effects of three dimensions of...

From official records, it would appear that the labour market significantly shifted from the formal to the informal sector in Kenya. However, a careful examination of different data sources for Nairobi show that in the 1990s there has been no direct transfer of employment from the formal sector...

The design and topology of a neural network is still an important and difficult task. To solve the problems of topology posed by the introduction of connexionism, new approaches are proposed, and especially a combination of induction rules with a statistical estimation of the neuron coefficients...

What is the role of co-evolution in a population of firms’ adaptation to a hostile environment ? To answer this question, the network sociology is revisited starting from the Kauffman’s biological computer model. A qualitative methodology is used, updating the mechanisms of exploitation and...

The literature on R&D collaboration highlights a broad set of rationales for allying with other organizations. At the same time, it has been reported that there exists a large variety of forms of collaboration. Nevertheless, the relation between the motives to collaborate and the different forms...