a panel of 181 observations from 1983 to 1991
number of observations : 1629
observation : production units
country : world
data(PatentsRD)
A dataframe containing :
year
firm's id
firm's main industry sector, one of aero (aerospace), chem (chemistry), comput (computer), drugs, elec (electricity), food, fuel (fuel and mining), glass, instr (instruments), machin (machinery), metals, other, paper, soft (software), motor (motor vehicles)
geographic area, one of eu (European Union), japan, usa, rotw (rest of the world)
numbers of European patent applications
log of R\&D expenditures
log of spillovers
Journal of Applied Econometrics data archive : http://qed.econ.queensu.ca/jae/. Verbeek, Marno (2004) A Guide to Modern Econometrics, John Wiley and Sons, chapter 7.
Index.Source
, Index.Economics
, Index.Econometrics
, Index.Observations
,