Regarding complex networks, one of the most relevant problems is to understand and to explore community structure. In particular it is important to define the network organization and the functions associated to the different network partitions. In this context, the idea is to consider some new...

Regarding complex networks, one of the most relevant problems is to understand and to explore community structure. In particular it is important to define the network organization and the functions associated to the different network partitions. In this context, the idea is to consider some new...

In recent years, the number of research and development (R&D) partnerships between firms has substantially increased. From the perspective of the individual firm, these partnerships are formed in order to share the risks and benefits of R&D. At the macro level, they result in a global spanning...

Consider a stock which is simultaneously traded on two venues either because its company cross-lists or because regulations allow multi-trading. We suggest that these venues represent an indirect network. Using trading volume data for nearly 22,000 equities between 2005 and 2009 we compare...

Consider a stock which is simultaneously traded on two or more venues, either because its company is cross-listed or because regulation allows multi-trading. We set the idea that these venues are 'indirectly' connected and represent a network. If the 'importance' of a venue is traditionally...

This paper analyzes the effect of different cooperation forms on innovation in small and medium enterprises in Belgium, Germany, Portugal and Spain using Community Innovation Survey data from 2008. We find that vertical cooperation and knowledge cooperation increases the probability to introduce...

The EU Framework Programme (FP) belongs to the most important instruments promoting transnational collaborative R&D projects in Europe. Its main objective is to initiate cross-border complementarities in order to exploit knowledge resources and to conduct large scale research. Within the EU FPs...

The focus of this study is on integration processes in European R&D by analyzing the spatio-temporal dimension of three different R&D collaboration networks across Europe. These networks cover different types of knowledge creation, namely co-patent networks, project based R&D networks within the...

An overarching concern in regional science is the characterization of interactions-such as commuter flows, transport, migration, or knowledge flows-within and between subnational spatial units. In this work, we use techniques from social network analysis to address the quality, rather than the...