This paper examines the collaboration structures and dynamics of the co-authorship network of all Slovenian researchers. Its goal is to identify the key factors driving collaboration and the main differences in collaboration behavior across scientific fields and disciplines. Two approaches to modelling network dynamics are combined in this paper: the small-world model and the mechanism of preferential attachment, also known as the process of cumulative advantage. Stochastic-actor-based modelling of co-authorship network dynamics uses data for the complete longitudinal co-authorship networks for the entire Slovenian scientific community from 1996 to 2010. We confirmed the presence of clustering in all fields and disciplines. Preferential attachment is far more complex than a single global mechanism. There were two clear distinctions regarding collaboration within scientific fields and disciplines. One was that some fields had an internal national saturation inhibiting further collaboration. The second concerned the differential impact of collaboration with scientists from abroad on domestic collaboration. In the natural, technical, medical, and biotechnical sciences, this promotes collaboration within the Slovenian scientific community while in the social sciences and humanities this inhibits internal collaboration.
COBISS.SI-ID: 33292637
Over the past decades, (bio)ethical expertise has been gaining considerable influence in decision-making processes on various levels, but the nature and role of bioethical expertise and experts has only rarely been subject to empirical investigation in institutional contexts. One of the characteristics of modern (bio)ethics is its “empirical” and “policy” turn, which has led to the formation of institutions that were given the remit to provide political decision-makers with ethical advice on dealing with contentious developments in new and emerging sciences and technologies. The present article thus tackles some of the theoretical and practical questions concerning ethicists and ethics in the context of EABs by combining theoretical reflection with empirical investigation.
COBISS.SI-ID: 33420125
The node set of a two-mode network consists of two disjoint subsets and all its links are linking these two subsets. The links can be weighted. We developed a new method for identifying important subnetworks in two-mode networks. The method combines and extends the ideas from generalized cores in one-mode networks and from $(p, q)$-cores for two-mode networks. In this paper we introduce the notion of generalized two-mode cores and discuss some of their properties. An efficient algorithm to determine generalized two-mode cores and an analysis of its complexity are also presented. For illustration some results obtained in analyses of real-life data are presented.
COBISS.SI-ID: 17369177