Cluster policy: insights from the German leading edge cluster competition

Policy induced innovation networks: The case of the German Leading-Edge Cluster competition

CLUSTER ALGEBRAS AND CLUSTER CATEGORIES

These are notes from introductory survey lectures given at the Institute for Studies in Theoretical Physics and Mathematics (IPM), Teheran, in 2008 and 2010. We present the definition and the fundamental properties of Fomin-Zelevinsky’s cluster algebras. Then, we introduce quiver representations and show how they can be used to construct cluster variables, which are the canonical generator...

How can a cluster policy enhance entrepreneurship? Evidence from the German 'BioRegio' case

This paper investigates the mechanisms through which a cluster policy can enhance entrepreneurship defined as new venture creations. It is based on the sudy of a cluster policy (“BioRegio”) that strongly stimulated new firm creations in biotechnology in Germany after 1996. The process induced by BioRegio at the territory-level is analyzed over a 10 year period (1995-2004). The article identifie...

Optimal policy identification: Insights from the German electricity market

The diffusion of renewable electricity generating technologies is widely considered as crucial for establishing a sustainable energy system in the future. However, the required transition is unlikely to be achieved by market forces alone. For this reason, many countries implement various policy instruments to support this process , also by redistributing related costs among all electricity cons...

Evolution of the leucine gene cluster in Buchnera aphidicola: insights from chromosomal versions of the cluster.

In Buchnera aphidicola strains associated with the aphid subfamilies Thelaxinae, Lachninae, Pterocommatinae, and Aphidinae, the four leucine genes (leuA, -B, -C, and -D) are located on a plasmid. However, these genes are located on the main chromosome in B. aphidicola strains associated with the subfamilies Pemphiginae and Chaitophorinae. The sequence of the chromosomal fragment containing the ...