Research Article
Measuring Green Innovation Efficiency for China’s High-Tech Manufacturing Industry: A Network DEA Approach
Table 1
Descriptive statistical results of input-output variables for researched provinces in total.
| | Variable | Unit | Mean | Std. dev. | Min | Max |
| | R&D capital stock (RDS） | 100 million yuan | 106.535 | 231.823 | 0.178 | 2044.384 | | Full-time equivalents (FTERDP) | Man-year | 16932.630 | 33175.270 | 11.800 | 224334.000 | | Number of patent applications (PA) | Piece | 3307.543 | 7647.005 | 1.000 | 58119.000 | | Number of patents owned (NP) | Piece | 3196.386 | 11378.510 | 1.000 | 125471.000 | | Physical capital stock (K) | 100 million yuan | 988.718 | 1219.791 | 22.949 | 9514.534 | | Number of employees (L) | Person | 391334.700 | 713679.400 | 4739.000 | 3890108.000 | | New product sales revenue (YNP) | 100 million yuan | 695.091 | 1544.006 | 0.019 | 12396.770 | | Prime operating revenue (Y) | 100 million yuan | 2668.986 | 5048.211 | 11.033 | 33491.550 | | SO2 emission (BSO2) | 10,000 tons | 3708.555 | 3129.999 | 381.206 | 15379.350 |
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