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Ziedonis (2004) - Dont Fence Me In (view source)
Revision as of 19:14, 4 July 2010
, 19:14, 4 July 2010→Measures
The paper constructs a '''fragmentation measure''' as follows (time subscripts are ignored):
:<math>FRAG_i = 1 - \sum_{j=1}^J \left ( \frac{NBCITES_ijNBCITES_{ij}}{NBCITES_i}\right )^2\, \quad i \ne j\,</math>
'''Capital intensity''' is measured as the deflated book-value of a firm's property, plant and equipment, normalized by the number of employees. Note that firm size is included as a covariate and is the number of employees (logged). The era in which the "new power of patents" was known, was defined to be 1985 onwards, after a series of important court cases.
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