1 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

2 “... in today’s knowledge economy. The authors—pioneers in the field—present extensive data and a rigorous...”

3 “... in today’s knowledge economy. The authors—pioneers in the field—present extensive data and a rigorous...”

4 “... in today’s knowledge economy. The authors—pioneers in the field—present extensive data and a rigorous...”

5 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

6 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

7 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

8 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

9 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

10 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

11 “... in today’s knowledge economy.  The authors—pioneers in the field—present extensive data and a rigorous...”

12