技术关联性、复杂性与区域多样化——来自中国地级市的证据
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马双, 曾刚, 张翼鸥
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Technological relatedness, complexity and regional diversity: Evidence from Chinese cities
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MA Shuang, ZENG Gang, ZHANG Yiou
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表3 1997—2016年全样本的技术进入模型
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Tab. 3 Entry models of full sample during 1997-2016
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| 模型I | 模型II | 模型III | 模型IV | 模型V | Constant | 0.153 079 7*** | 0.153 187 6*** | 0.151 287 5*** | 0.162 842 0*** | -0.012 034 7 | | (0.000 523 7) | (0.000 553 9) | (0.000 517 9) | (0.000 564 1) | (0.025 665 3) | Relatedness Density | 0.005 249 7*** | 0.004 429 4*** | | 0.004 078 3*** | 0.003 876 6*** | | (0.000 037 2) | (0.000 037 5) | | (0.000 040 2) | (0.000 049 9) | Technology Complexity | | 0.000 046 3* | | 0.000 035 4 | -0.000 060 8** | | | (0.000 017 8) | | (0.000 019 8) | (0.000 022 1) | Population | | | 0.031 575 2*** | 0.016 234 9*** | -0.115 539 8*** | | | | (0.000 798 6) | (0.000 798 3) | (0.014 987 2) | GDP per cap. | | | 0.000 002 0*** | 0.000 000 5*** | 0.000 001 7*** | | | | (0.000 000 1) | (0.000 000 1) | (0.000 000 3) | Population Density | | | -0.000 000 86*** | -0.000 003 0*** | 0.000 018 6 | | | | (0.000 006 5) | (0.000 006 7) | (0.000 011 8) | Tech. stock | | | -0.000 002 5*** | -0.000 003 1*** | -0.000 002 3*** | | | | (0.000 000 1) | (0.000 000 1) | (0.000 000 2) | Tech. size | | | 0.000 000 4** | 0.000 000 05 | 0.000 001 3*** | | | | (0.000 000 2) | (0.000 000 2) | (0.000 000 2) | 区域固定效应 | 否 | 否 | 否 | 否 | 是 | 时间固定效应 | 否 | 否 | 否 | 否 | 是 | 调整R2 | 0.030 309 2 | 0.030 316 2 | 0.0 397 627 | 0.030 675 8 | 0.036 628 1 |
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