We analyze the evolution of the international collaboration network in photovoltaic research. Using data on scientific publications for the period 1980-2015, we apply social network analysis to trace the evolution of the global network of countries and national research networks of...

Technological change and gains in efficiency of renewable power generation technologies are to a large extent driven by governmental support. Various policies that can broadly be categorized as technology push, demand pull or systemic constitute a policy mix for renewable energies. Our goal is...

Various forms of interaction during the process of research and innovation constitute a global network of knowledge generation and diffusion. Countries and their research organizations and individual scientists need to be embedded in this network to participate in global knowledge ows and to...

The emergence and evolution of a technology is intimately related to it's knowledge base. A knowledge base shows certain dynamics and evolves over time. Knowledge accumulation, especially the in-flow of knowledge from sources external to an industry, is crucial for the technology's knowledge...

Diese Dissertationsschrift untersucht die Prozesse der Entstehung neuen Wissens und des Wissensaustausches. Neues Wissen und die Übertragung in neue Technologien oder die Verbesserung von bestehenden ist ein wesentlicher Treiber wirtschaftlicher Entwicklung. Das bisherige Verständnis über...

The 'doing-using-interacting mode' of innovation (DUI) is considered an important component of innovative activity. It describes informal innovative activities and thus complements the 'science-technology-innovation mode' (STI) based on research and development. While empirical measurement of...

This paper proposes a search strategy for photovoltaic patents which allows to distinguish the photovoltaic system into sub-trajectories. Identifying and analyzing sub-trajectories is of particular importance for understanding micro patterns of technological change. The proposed search strategy...

Science-industry collaboration is one of the major channels for transferring new scientific ideas into economic applications. Whereas the factors leading to collaboration are reasonably well understood, the determinants of the outcomes generated by such collaboration are unknown. This paper...

We analyze the influence of two contradicting settings on the success in the academic spin-off creation process. Scientists, who are embedded in the academic setting, have to reach out and adapt to the logics of the commercial setting to successfully found their firm. However, along this...

We analyze the influence of two contradicting settings on the success in the academic spin-off creation process. Scientists, who are embedded in the academic setting, have to reach out and adapt to the logics of the commercial setting to successfully found their firm. However, along this...