Knowledge flows within and across countries should be carriers of important learning spillovers. We use data on 1.5 million patents and 4.5 million citations to analyze knowledge flows across 147 subnational regions. We estimate that only 15% of average knowledge is learned outside the average...

During the last 20 years, R&D and innovation activities in the service sector have clearly increased. Especially business services are believed to be one of the main drivers of technical changes and economic progress. Looking at the labour indices calculated over the period from 1982 to 1996 one...

Firms compete increasingly in an open innovation environment. Search strategies for external knowledge become therefore crucial for firm success. Existing research differentiates between the breadth (diversity) and depth (intensity) with which firms pursue external knowledge source. A consensus...

The paper builds a framework for the analysis of research and development (R&D) offshoring and outsourcing that encompasses several strands of the economics literature. It surveys the predictions from key theoretical models advanced in the literature on international trade, foreign direct...

Diese Arbeit geht der Frage nach, wie Außenhandel zu Wirtschaftswachstum führen kann. Da anhaltendes Wirtschaftswachstum nur durch technischen Fortschritt möglich ist, muss Außenhandel deshalb auf die Rate des technischen Fortschritts wirken um Wirtschaftswachstum beeinflussen zu können....

We analyze the spatial diffusion of knowledge in laser technology in West Germany from 1960, when this technology began, until 2005. Laser technology research has been nearly exclusively conducted in regions that are home to a university with a physics or electrical engineering department, an...