This article aims to investigate some conceptual and methodological issues on the measurement of technological change in multi-technology product sectors. It develops a methodological contribution by building a measure of the technological frontier and of firms' technological positioning based...

It is widely believed that while society allows technology to be private property, scientific knowledge is public and open. However, over the past quarter-century there has been increasing patenting of quite basic scientific knowledge. This essay argues that this is potentially a very serious...

This paper employs an original dataset for 146 US metropolitan areas to test some propositions that characterize two different models of organizing firms and industries: the managerial firm, epitomized by the work of Alfred Chandler, and the entrepreneurial system, recently highlighted by many...