Contexts in source publication

Context 1
... database contains 22 variables capturing company's characteristics for each of nine periods. The main variables with descriptions are presented in the Table 2. Moreover, our data are complete, which means that no missing value is observed for any of the variables. ...
Context 2
... and Gardezabal [1] pro- pose to make use of the observed characteristics of the units from the donor pool. To construct our synthetic control we define (J × 1) vector of weights W = (w 2 ,..., w J + 1 )′ such that such that the resulting synthetic control best approximates first the company exposed to the CDP with respect to CO 2 emissions per employee in the pre-intervention period and second all other relevant characteristics, Z = (R, GP, COGS, KL, EMP, GHG), described in Table 2. In other words we seek W * such that: 1, where X 1 denotes a vector of pre- intervention characteristics of the treated company, including also pre-intervention emissions per employee; X 0 denotes a matrix of the same variables for the J companies in the donor pool; V is some symmetric and positive semidefinite matrix. ...