Collected Essays on Finance and Economics ›› 2021, Vol. 37 ›› Issue (7): 14-24.
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SONG Can
Received:2020-12-08
Online:2021-07-10
Published:2021-07-15
宋灿
作者简介:宋灿(1994-),女,江苏苏州人,南开大学经济学院博士生。
基金资助:CLC Number:
SONG Can. Opening up of Foreign Capital, Digitization and Servitization[J]. Collected Essays on Finance and Economics, 2021, 37(7): 14-24.
宋灿. 外资开放、数字信息化与服务化[J]. 财经论丛, 2021, 37(7): 14-24.
| 变 量 | 均值 | 标准差 | 最小值 | 最大值 |
|---|---|---|---|---|
| Index(外资开放) | 0.303 | 0.221 | -0.421 | 0.952 |
| Service(服务化策略) | 0.201 | 0.401 | 0 | 1 |
| SerReve(服务化程度) | 0.005 | 0.018 | 0 | 0.213 |
| AI(数字信息化水平) | 0.011 | 0.013 | 0 | 0.606 |
| Age(企业年龄) | 1.707 | 0.898 | 0 | 3.258 |
| Size(企业规模) | 21.696 | 1.111 | 17.641 | 26.547 |
| Lev(企业杠杆率) | 0.386 | 0.22 | 0.008 | 2.992 |
| Roa(资产回报率) | 0.048 | 0.143 | -2.008 | 10.401 |
| Tan(固定资产水平) | 0.247 | 0.14 | 0 | 0.862 |
| 变 量 | 均值 | 标准差 | 最小值 | 最大值 |
|---|---|---|---|---|
| Index(外资开放) | 0.303 | 0.221 | -0.421 | 0.952 |
| Service(服务化策略) | 0.201 | 0.401 | 0 | 1 |
| SerReve(服务化程度) | 0.005 | 0.018 | 0 | 0.213 |
| AI(数字信息化水平) | 0.011 | 0.013 | 0 | 0.606 |
| Age(企业年龄) | 1.707 | 0.898 | 0 | 3.258 |
| Size(企业规模) | 21.696 | 1.111 | 17.641 | 26.547 |
| Lev(企业杠杆率) | 0.386 | 0.22 | 0.008 | 2.992 |
| Roa(资产回报率) | 0.048 | 0.143 | -2.008 | 10.401 |
| Tan(固定资产水平) | 0.247 | 0.14 | 0 | 0.862 |
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | |
| Index | 0.416**(0.212) | 0.419**(0.170) | 0.324***(0.166) | 0.780***(0.247) | 0.669**(0.275) | 0.544**(0.238) |
| Age | 0.428***(0.056) | 0.572***(0.120) | 0.370***0.370*** | 0.143(0.174) | ||
| Size | 0.093***(0.024) | 0.155***(0.034) | 0.073(0.049) | 0.194**(0.078) | ||
| Lev | 0.643***(0.186) | 0.188(0.221) | 0.741***(0.260) | 0.155(0.267) | ||
| Roa | 0.053**(0.021) | 0.374*(0.199) | -0.348(0.304) | 0.017(0.596) | ||
| Tan | -1.993***(0.178) | -0.575(0.366) | -5.886***(0.261) | -1.485***(0.497) | ||
| Year | Yes | Yes | Yes | Yes | Yes | Yes |
| City | Yes | Yes | No | Yes | Yes | No |
| Industry | Yes | Yes | No | Yes | Yes | No |
| Firmid | No | No | Yes | No | No | Yes |
| Park_type | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| HPC_test | 0.969 | 0.735 | 0.736 | 0.618 | 0.629 | 0.633 |
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | |
| Index | 0.416**(0.212) | 0.419**(0.170) | 0.324***(0.166) | 0.780***(0.247) | 0.669**(0.275) | 0.544**(0.238) |
| Age | 0.428***(0.056) | 0.572***(0.120) | 0.370***0.370*** | 0.143(0.174) | ||
| Size | 0.093***(0.024) | 0.155***(0.034) | 0.073(0.049) | 0.194**(0.078) | ||
| Lev | 0.643***(0.186) | 0.188(0.221) | 0.741***(0.260) | 0.155(0.267) | ||
| Roa | 0.053**(0.021) | 0.374*(0.199) | -0.348(0.304) | 0.017(0.596) | ||
| Tan | -1.993***(0.178) | -0.575(0.366) | -5.886***(0.261) | -1.485***(0.497) | ||
| Year | Yes | Yes | Yes | Yes | Yes | Yes |
| City | Yes | Yes | No | Yes | Yes | No |
| Industry | Yes | Yes | No | Yes | Yes | No |
| Firmid | No | No | Yes | No | No | Yes |
| Park_type | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
| HPC_test | 0.969 | 0.735 | 0.736 | 0.618 | 0.629 | 0.633 |
| 变 量 | 服务化策略 | 服务化程度 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | |||||
| Index | 0.398**(0.202) | 0.417**(0.167) | 0.435**(0.168) | 0.769*(0.436) | 0.693***(0.268) | 0.665***(0.241) | ||||
| AI | 1.498***(0.173) | 0.741***(0.169) | 0.474**(0.207) | 1.405***(0.501) | 1.317***(0.328) | 0.824***(0.281) | ||||
| Index*AI | 3.661***(0.606) | 4.574***(0.780) | 3.863*(0.507) | 4.067***(1.574) | 6.237***(0.788) | 5.332**(1.847) | ||||
| Age | 0.433***(0.055) | 0.590***(0.122) | 0.375***(0.098) | 0.162(0.173) | ||||||
| Size | 0.095***(0.025) | 0.135***(0.038) | 0.074(0.056) | 0.170**(0.076) | ||||||
| Lev | 0.624***(0.186) | 0.181(0.224) | 0.722***(0.255) | 0.142(0.268) | ||||||
| Roa | 0.052**(0.020) | 0.378*(0.200) | -0.338(0.292) | 0.023(0.594) | ||||||
| Tan | -1.997***(0.181) | -0.653*(0.373) | -5.937***(0.260) | -1.636***(0.504) | ||||||
| Year | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| City | Yes | Yes | No | Yes | Yes | No | ||||
| Industry | Yes | Yes | No | Yes | Yes | No | ||||
| Firmid | No | No | Yes | No | No | Yes | ||||
| 变 量 | 服务化策略 | 服务化程度 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | |||||
| Index | 0.398**(0.202) | 0.417**(0.167) | 0.435**(0.168) | 0.769*(0.436) | 0.693***(0.268) | 0.665***(0.241) | ||||
| AI | 1.498***(0.173) | 0.741***(0.169) | 0.474**(0.207) | 1.405***(0.501) | 1.317***(0.328) | 0.824***(0.281) | ||||
| Index*AI | 3.661***(0.606) | 4.574***(0.780) | 3.863*(0.507) | 4.067***(1.574) | 6.237***(0.788) | 5.332**(1.847) | ||||
| Age | 0.433***(0.055) | 0.590***(0.122) | 0.375***(0.098) | 0.162(0.173) | ||||||
| Size | 0.095***(0.025) | 0.135***(0.038) | 0.074(0.056) | 0.170**(0.076) | ||||||
| Lev | 0.624***(0.186) | 0.181(0.224) | 0.722***(0.255) | 0.142(0.268) | ||||||
| Roa | 0.052**(0.020) | 0.378*(0.200) | -0.338(0.292) | 0.023(0.594) | ||||||
| Tan | -1.997***(0.181) | -0.653*(0.373) | -5.937***(0.260) | -1.636***(0.504) | ||||||
| Year | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| City | Yes | Yes | No | Yes | Yes | No | ||||
| Industry | Yes | Yes | No | Yes | Yes | No | ||||
| Firmid | No | No | Yes | No | No | Yes | ||||
| 变 量 | 产品支持类服务化 | 非产品支持类服务化 | |||||
|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | ||||
| Index | 0.810***(0.223) | 0.837***(0.229) | 0.660**(0.282) | 0.563**(0.322) | |||
| AI | 1.614***(0.241) | 0.873***(0.272) | 0.953**(0.401) | 0.624**(0.300) | |||
| Index*AI | 6.827***(1.116) | 2.544***(1.895) | 5.386***(0.661) | 4.957**(1.840) | |||
| 控制变量 | Yes | Yes | Yes | Yes | |||
| Year | Yes | Yes | Yes | Yes | |||
| City | Yes | No | Yes | No | |||
| Industry | Yes | No | Yes | No | |||
| Firmid | No | Yes | No | Yes | |||
| 变 量 | 产品支持类服务化 | 非产品支持类服务化 | |||||
|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | ||||
| Index | 0.810***(0.223) | 0.837***(0.229) | 0.660**(0.282) | 0.563**(0.322) | |||
| AI | 1.614***(0.241) | 0.873***(0.272) | 0.953**(0.401) | 0.624**(0.300) | |||
| Index*AI | 6.827***(1.116) | 2.544***(1.895) | 5.386***(0.661) | 4.957**(1.840) | |||
| 控制变量 | Yes | Yes | Yes | Yes | |||
| Year | Yes | Yes | Yes | Yes | |||
| City | Yes | No | Yes | No | |||
| Industry | Yes | No | Yes | No | |||
| Firmid | No | Yes | No | Yes | |||
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| 市场准入程度较低(1) | 市场准入程度较高(2) | 市场准入程度较低(3) | 市场准入程度较高(4) | |||
| Index | 0.143***(0.182) | 0.355**(0.175) | 0.790***(0.352) | 0.960***(0.210) | ||
| AI | 0.781**(0.337) | 0.798***(0.196) | 2.145***(0.512) | 2.211*(0.880) | ||
| Index*AI | 1.036**(1.308) | 1.466***(0.579) | 2.179***(1.608) | 2.697**(1.209) | ||
| 控制变量 | Yes | Yes | Yes | Yes | ||
| Year | Yes | Yes | Yes | Yes | ||
| City | Yes | Yes | Yes | Yes | ||
| Industry | Yes | Yes | Yes | Yes | ||
| N | 2945 | 4180 | 2945 | 4180 | ||
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| 市场准入程度较低(1) | 市场准入程度较高(2) | 市场准入程度较低(3) | 市场准入程度较高(4) | |||
| Index | 0.143***(0.182) | 0.355**(0.175) | 0.790***(0.352) | 0.960***(0.210) | ||
| AI | 0.781**(0.337) | 0.798***(0.196) | 2.145***(0.512) | 2.211*(0.880) | ||
| Index*AI | 1.036**(1.308) | 1.466***(0.579) | 2.179***(1.608) | 2.697**(1.209) | ||
| 控制变量 | Yes | Yes | Yes | Yes | ||
| Year | Yes | Yes | Yes | Yes | ||
| City | Yes | Yes | Yes | Yes | ||
| Industry | Yes | Yes | Yes | Yes | ||
| N | 2945 | 4180 | 2945 | 4180 | ||
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| 低信息基础设施密度(1) | 高信息基础设施密度(2) | 低信息基础设施密度(3) | 高信息基础设施密度(4) | |||
| Index | 0.387***(0.203) | 0.435*(0.180) | 0.709*(0.379) | 1.089***(0.328) | ||
| AI | 1.316***(0.450) | 2.202*(0.363) | 1.095*(0.627) | 1.546*(0.615) | ||
| Index*AI | 0.160*(2.974) | 0.800***(1.131) | 2.874*(3.309) | 4.388***(0.982) | ||
| 控制变量 | Yes | Yes | Yes | Yes | ||
| Year | Yes | Yes | Yes | Yes | ||
| City | Yes | Yes | Yes | Yes | ||
| Industry | Yes | Yes | Yes | Yes | ||
| N | 4080 | 3045 | 4080 | 3045 | ||
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| 低信息基础设施密度(1) | 高信息基础设施密度(2) | 低信息基础设施密度(3) | 高信息基础设施密度(4) | |||
| Index | 0.387***(0.203) | 0.435*(0.180) | 0.709*(0.379) | 1.089***(0.328) | ||
| AI | 1.316***(0.450) | 2.202*(0.363) | 1.095*(0.627) | 1.546*(0.615) | ||
| Index*AI | 0.160*(2.974) | 0.800***(1.131) | 2.874*(3.309) | 4.388***(0.982) | ||
| 控制变量 | Yes | Yes | Yes | Yes | ||
| Year | Yes | Yes | Yes | Yes | ||
| City | Yes | Yes | Yes | Yes | ||
| Industry | Yes | Yes | Yes | Yes | ||
| N | 4080 | 3045 | 4080 | 3045 | ||
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | |||
| Index | 0.091**(0.036) | 0.072*(0.048) | 0.040**(0.020) | 0.028*(0.020) | ||
| AI | 0.183***(0.063) | 0.075*(0.090) | 0.041*(0.027) | 0.049*(0.042) | ||
| Index*AI | 1.039***(0.254) | 1.068*(0.251) | 0.271***(0.092) | 0.143*(0.093) | ||
| 控制变量 | Yes | Yes | Yes | Yes | ||
| Year | Yes | Yes | Yes | Yes | ||
| City | Yes | No | Yes | No | ||
| Industry | Yes | No | Yes | No | ||
| Firmid | No | Yes | No | Yes | ||
| K-PrkLM | 0.000 | 0.000 | 0.000 | 0.000 | ||
| K-PF | 634.037 | 647.246 | 537.763 | 559.040 | ||
| 变 量 | 服务化策略 | 服务化程度 | ||||
|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | |||
| Index | 0.091**(0.036) | 0.072*(0.048) | 0.040**(0.020) | 0.028*(0.020) | ||
| AI | 0.183***(0.063) | 0.075*(0.090) | 0.041*(0.027) | 0.049*(0.042) | ||
| Index*AI | 1.039***(0.254) | 1.068*(0.251) | 0.271***(0.092) | 0.143*(0.093) | ||
| 控制变量 | Yes | Yes | Yes | Yes | ||
| Year | Yes | Yes | Yes | Yes | ||
| City | Yes | No | Yes | No | ||
| Industry | Yes | No | Yes | No | ||
| Firmid | No | Yes | No | Yes | ||
| K-PrkLM | 0.000 | 0.000 | 0.000 | 0.000 | ||
| K-PF | 634.037 | 647.246 | 537.763 | 559.040 | ||
| 变 量 | 替换被解释变量 | 剔除房地产服务企业 | Logit模型 | Probit模型 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | |||||||||
| Index | 0.727*** | 0.978*** | 0.928*** | 1.213*** | 0.627** | 0.591** | 0.386** | 0.366** | ||||||||
| (0.243) | (0.309) | (0.278) | (0.308) | (0.291) | (0.292) | (0.165) | (0.166) | |||||||||
| 控制变量 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||||||||
| Year | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||||||||
| City | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||||||||
| Industry | No | Yes | No | Yes | Yes | Yes | Yes | Yes | ||||||||
| N | 7125 | 7125 | 6862 | 6862 | 7125 | 7125 | 7125 | 7125 | ||||||||
| 变 量 | 替换被解释变量 | 剔除房地产服务企业 | Logit模型 | Probit模型 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | |||||||||
| Index | 0.727*** | 0.978*** | 0.928*** | 1.213*** | 0.627** | 0.591** | 0.386** | 0.366** | ||||||||
| (0.243) | (0.309) | (0.278) | (0.308) | (0.291) | (0.292) | (0.165) | (0.166) | |||||||||
| 控制变量 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||||||||
| Year | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||||||||
| City | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||||||||
| Industry | No | Yes | No | Yes | Yes | Yes | Yes | Yes | ||||||||
| N | 7125 | 7125 | 6862 | 6862 | 7125 | 7125 | 7125 | 7125 | ||||||||
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