Lorenzo Ardito

5 Questions 4 Answers 0 Followers

Questions related from Lorenzo Ardito

Is it possibile to add quadratic terms in structural equation modeling (SEM)?

Let's suppose that I want to regress A over B and B over C using SEM. Is it possible to also add the variable A square to see whether A has a curvilinear effect on B? Thank you

22 December 2015 2,809 2 View

How can I plot results of a random-effects negative binomial regression?

I run a random-effects negative binomial regression. Using estimates of the regression, I would like to plot the effect of my independent variable (GeoDispersion) on my dependent variable...

11 November 2015 2,604 6 View

Where can I find when a three-digit patent class has been established by the U.S.PTO.?

I need to calcute a variable taking into accont the age of a Technology Class. Following Shane (2001), it can be measured as the number of years since thethree-digit patent class was established...

24 October 2014 6,345 1 View

Is there something similar to the Community Innovation Survey (CIS) for US companies?

As you know CIS is a valuable source of information for innovation studies. However, it doesn't provide data about US companies. Therefore, I would like to know whether similar data are also...

13 March 2014 388 3 View

Does USPTO assign patent numbers in chronological order?

I would like to know if the the patent number is assigned in chronological order with respect to the issue date. A reference would be really useful.

30 October 2013 2,875 2 View