Article(id=1149642862779875715, tenantId=1146029695717560320, journalId=1146120045056339983, issueId=1149642860972130684, articleNumber=1002-980X(2025)04-0134-15, orderNo=null, doi=10.12404/j.issn.1002-980X.J24080814, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1723046400000, receivedDateStr=2024-08-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1752025817818, onlineDateStr=2025-07-09, pubDate=1745510400000, pubDateStr=2025-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752025817818, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752025817818, creator=13701087609, updateTime=1752025817818, updator=13701087609, issue=Issue{id=1149642860972130684, tenantId=1146029695717560320, journalId=1146120045056339983, year='2025', volume='44', issue='4', pageStart='1', pageEnd='148', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1752025817384, creator=13701087609, updateTime=1758098883950, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1175115148403552408, tenantId=1146029695717560320, journalId=1146120045056339983, issueId=1149642860972130684, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1175115148403552409, tenantId=1146029695717560320, journalId=1146120045056339983, issueId=1149642860972130684, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=134, endPage=148, ext={EN=ArticleExt(id=1149642863174140293, articleId=1149642862779875715, tenantId=1146029695717560320, journalId=1146120045056339983, language=EN, title=Impact of Technological Diversification on Breakthrough Innovation Performance of SRDI Enterprises, columnId=1149284495636906656, journalTitle=Journal of Technology Economics, columnName=Technology Economics Evaluation, runingTitle=null, highlight=null, articleAbstract=
As an important force to accelerate the development of new quality productive forces, "specialized, refined, differential and innovative"(SRDI) enterprises have significant implications for China's realization of high-level scientific and technological self-reliance and self-sufficiency through their diversified technology strategies. Based on the resource-based view and diversification theory, an empirical analysis was conducted on the non-balanced panel data of 703 listed SRDI enterprises in China from 2018 to 2022 to explore the relationship between technological diversification and breakthrough innovation performance, and analyze the moderating effect of industry competition on the main effect. The impact of both related and unrelated technological diversification on the breakthrough innovation performance of SRDI enterprises is observed to be positive, with related technological diversification demonstrating a more pronounced enhancement effect. Industry competition interaction is found to weaken the positive influence of related technological diversification on breakthrough innovation performance, while no significant moderating effect is detected in the case of unrelated technological diversification. Conversely, higher industry competition intensity is revealed to strengthen the positive relationship between unrelated technological diversification and breakthrough innovation performance, whereas no significant moderating role is observed for related technological diversification. These findings contribute to the existing research on factors influencing breakthrough innovation in SRDI enterprises, offering strategic references for selecting technological diversification approaches under varying competitive environments under the new development pattern.
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作为加快发展新质生产力的重要力量,“专精特新”企业通过技术多元化战略实现突破性创新对中国实现高水平科技自立自强具有重要意义。本文基于资源基础观和多元化理论,通过对2018—2022年中国“专精特新”上市企业的非平衡面板数据进行实证分析,探讨技术多元化对突破性创新绩效的影响作用及行业竞争对二者关系的调节作用。研究发现,无论是相关技术多元化还是非相关技术多元化,均能够正向提升“专精特新”企业的突破性创新绩效,其中相关技术多元化的效果更为显著;行业竞争互动削弱相关技术多元化对突破性创新绩效的正向作用,对非相关技术多元化无显著影响;而行业竞争程度则增强非相关技术多元化对突破性创新绩效的正向作用,对相关技术多元化无显著影响。研究结果丰富了“专精特新”企业突破性创新绩效影响因素的相关研究,可为新发展格局背景下“专精特新”企业在不同行业竞争环境中选择技术多元化战略提供借鉴。
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吴淑芳(2000—),河海大学商学院硕士研究生,研究方向:战略管理与创新管理;
唐震(1976—),博士,河海大学商学院教授,研究方向:战略管理与创新管理;
田鸣(1987—),博士,河海大学商学院讲师,研究方向:战略管理与创新管理。
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唐震(1976—),博士,河海大学商学院教授,研究方向:战略管理与创新管理;
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唐震(1976—),博士,河海大学商学院教授,研究方向:战略管理与创新管理;
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田鸣(1987—),博士,河海大学商学院讲师,研究方向:战略管理与创新管理。
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田鸣(1987—),博士,河海大学商学院讲师,研究方向:战略管理与创新管理。
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研究模型, figureFileSmall=64ak9sH3IN1ZNaY0uC993A==, figureFileBig=gjBXMvn/uvuAp0anRJYMZQ==, tableContent=null), ArticleFig(id=1175120786999357734, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 上市公司样本分类 | 技术多元化 | 相关 技术多元化 | 非相关 技术多元化 | 相关技术 多元化占比(%) | 突破性创新 占比(%) |
| 上市公司总样本 | 1.600 | 0.305 | 1.295 | 19.06 | 23.69 |
| “专精特新”上市公司样本 | 1.353 | 0.261 | 1.091 | 19.29 | 36.98 |
), ArticleFig(id=1175120787045495079, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=CN, label=表1, caption=
“专精特新”企业与一般企业情况比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 上市公司样本分类 | 技术多元化 | 相关 技术多元化 | 非相关 技术多元化 | 相关技术 多元化占比(%) | 突破性创新 占比(%) |
| 上市公司总样本 | 1.600 | 0.305 | 1.295 | 19.06 | 23.69 |
| “专精特新”上市公司样本 | 1.353 | 0.261 | 1.091 | 19.29 | 36.98 |
), ArticleFig(id=1175120787100021032, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量类别 | 指标 | 符号 | 指标说明 |
| 因变量 | 突破性创新绩效 | BI | 企业当年相比于其前五年出现新知识元素的专利申请数 |
| ln_BI | ln(企业当年相比于其前五年出现新知识元素的专利申请数+1) |
| 自变量 | 非相关技术多元化 | UTD | IPC前3位测算出的熵指数 |
| 相关技术多元化 | RTD | TD-UTD(TD是IPC前4位测算出的熵指数) |
| 调节变量 | 行业竞争互动 | SCM | 行业内所有公司ΔΠi/ΔSi与ΔSc之间的相关系数ΔΠi为相较上年的利润变化、 ΔSi为相较上年的销售收入变化、ΔSc为行业竞争对手总产出变化 |
| 行业竞争程度 | HHI | 行业内各公司的主营业务收入与行业主营业务收入合计的比值的平方累加 |
| 控制变量 | 企业年龄 | age | 当年与企业成立年份的差值 |
| 企业规模 | size | ln(企业当年总资产+1) |
| 企业研发投入 | RDC | 企业当年研发支出 |
| 盈利能力 | ROA | 企业当年总资产收益率 |
| 成长能力 | NPGR | 企业当年相对于上一年的净利润增长率 |
| 企业所在行业 | ind | 行业虚拟变量 |
), ArticleFig(id=1175120787246821673, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=CN, label=表2, caption=
主要变量定义和指标说明
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| 变量类别 | 指标 | 符号 | 指标说明 |
| 因变量 | 突破性创新绩效 | BI | 企业当年相比于其前五年出现新知识元素的专利申请数 |
| ln_BI | ln(企业当年相比于其前五年出现新知识元素的专利申请数+1) |
| 自变量 | 非相关技术多元化 | UTD | IPC前3位测算出的熵指数 |
| 相关技术多元化 | RTD | TD-UTD(TD是IPC前4位测算出的熵指数) |
| 调节变量 | 行业竞争互动 | SCM | 行业内所有公司ΔΠi/ΔSi与ΔSc之间的相关系数ΔΠi为相较上年的利润变化、 ΔSi为相较上年的销售收入变化、ΔSc为行业竞争对手总产出变化 |
| 行业竞争程度 | HHI | 行业内各公司的主营业务收入与行业主营业务收入合计的比值的平方累加 |
| 控制变量 | 企业年龄 | age | 当年与企业成立年份的差值 |
| 企业规模 | size | ln(企业当年总资产+1) |
| 企业研发投入 | RDC | 企业当年研发支出 |
| 盈利能力 | ROA | 企业当年总资产收益率 |
| 成长能力 | NPGR | 企业当年相对于上一年的净利润增长率 |
| 企业所在行业 | ind | 行业虚拟变量 |
), ArticleFig(id=1175120787313930538, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | BI | UTD | RTD | SCM | HHI | age | size | RDC | ROA | NPGR | ind |
| BI | 1 | | | | | | | | | | |
| UTD | 0.380*** | 1.05 | | | | | | | | | |
| RTD | 0.403*** | 0.184*** | 1.05 | | | | | | | | |
| SCM | -0.016 | -0.002 | 0.028 | 1.01 | | | | | | | |
| HHI | -0.058*** | -0.024 | -0.014 | 0.089*** | 1.05 | | | | | | |
| age | -0.118*** | -0.042* | -0.052** | 0.016 | -0.040* | 1.03 | | | | | |
| size | 0.145*** | 0.092*** | 0.030 | -0.029 | 0.028 | 0.014 | 1.34 | | | | |
| RDC | 0.243*** | 0.062*** | 0.092*** | -0.018 | -0.056** | -0.058*** | 0.491*** | 1.35 | | | |
| ROA | -0.021 | -0.005 | -0.003 | 0.016 | 0.018 | -0.043* | -0.050** | 0.029 | 1.17 | | |
| NPGR | -0.018 | -0.029 | -0.018 | 0.005 | 0.011 | 0.003 | 0.008 | 0.016 | 0.336*** | 1.13 | |
| ind | 0.108*** | -0.057** | 0.005 | -0.006 | 0.175*** | -0.116*** | 0.069*** | 0.057** | -0.160*** | -0.028 | 1.09 |
| 均值 | 6.151 | 1.091 | 0.261 | 0.0104 | 0.103 | 18.40 | 21.34 | 0.874 | 4.988 | -13.66 | 12.93 |
| 标准差 | 7.439 | 0.633 | 0.281 | 0.0660 | 0.108 | 5.525 | 0.907 | 1.379 | 7.416 | 509.3 | 12.19 |
), ArticleFig(id=1175120787397816619, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=CN, label=表3, caption=
描述性统计和相关性分析结果
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| 变量 | BI | UTD | RTD | SCM | HHI | age | size | RDC | ROA | NPGR | ind |
| BI | 1 | | | | | | | | | | |
| UTD | 0.380*** | 1.05 | | | | | | | | | |
| RTD | 0.403*** | 0.184*** | 1.05 | | | | | | | | |
| SCM | -0.016 | -0.002 | 0.028 | 1.01 | | | | | | | |
| HHI | -0.058*** | -0.024 | -0.014 | 0.089*** | 1.05 | | | | | | |
| age | -0.118*** | -0.042* | -0.052** | 0.016 | -0.040* | 1.03 | | | | | |
| size | 0.145*** | 0.092*** | 0.030 | -0.029 | 0.028 | 0.014 | 1.34 | | | | |
| RDC | 0.243*** | 0.062*** | 0.092*** | -0.018 | -0.056** | -0.058*** | 0.491*** | 1.35 | | | |
| ROA | -0.021 | -0.005 | -0.003 | 0.016 | 0.018 | -0.043* | -0.050** | 0.029 | 1.17 | | |
| NPGR | -0.018 | -0.029 | -0.018 | 0.005 | 0.011 | 0.003 | 0.008 | 0.016 | 0.336*** | 1.13 | |
| ind | 0.108*** | -0.057** | 0.005 | -0.006 | 0.175*** | -0.116*** | 0.069*** | 0.057** | -0.160*** | -0.028 | 1.09 |
| 均值 | 6.151 | 1.091 | 0.261 | 0.0104 | 0.103 | 18.40 | 21.34 | 0.874 | 4.988 | -13.66 | 12.93 |
| 标准差 | 7.439 | 0.633 | 0.281 | 0.0660 | 0.108 | 5.525 | 0.907 | 1.379 | 7.416 | 509.3 | 12.19 |
), ArticleFig(id=1175120787485897004, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | BI |
| 模型1 | 模型2 | 模型3 | 模型4 | 模型5 | 模型6 | 模型7 | 模型8 |
| UTD | | 0.687*** (0.030) | | 0.648*** (0.028) | | 0.685*** (0.030) | | 0.771*** (0.046) |
| RTD | | | 1.139*** (0.055) | 1.139*** (0.055) | 1.158*** (0.056) | | 1.203*** (0.088) | |
| SCM | | | | | 0.121 (0.369) | -0.724 (0.788) | | |
| HHI | | | | | | | -0.690** (0.282) | -0.012 (0.413) |
| RTD×SCM | | | | | -4.397** (2.075) | | | |
| UTD×SCM | | | | | | 0.544 (1.311) | | |
| RTD×HHI | | | | | | | -0.583 (0.716) | |
| UTD×HHI | | | | | | | | -0.851** (0.353) |
| age | -0.015*** (0.004) | -0.012*** (0.004) | -0.012*** (0.004) | -0.008** (0.003) | -0.011*** (0.004) | -0.012*** (0.004) | -0.012*** (0.004) | -0.013*** (0.004) |
| size | 0.061** (0.025) | 0.014 (0.022) | 0.078*** (0.024) | 0.035 (0.022) | 0.076*** (0.023) | 0.014 (0.022) | 0.081*** (0.023) | 0.015 (0.022) |
| RDC | 0.064*** (0.010) | 0.076*** (0.009) | 0.067*** (0.010) | 0.077*** (0.009) | 0.068*** (0.010) | 0.077*** (0.009) | 0.064*** (0.010) | 0.075*** (0.009) |
| NPGR | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) |
| ROA | 0.001 (0.003) | -0.000 (0.003) | 0.000 (0.003) | -0.000 (0.002) | 0.000 (0.003) | -0.000 (0.003) | 0.001 (0.003) | 0.000 (0.003) |
| ind | 0.003 (0.002) | 0.004** (0.001) | 0.004*** (0.001) | 0.005*** (0.001) | 0.004*** (0.001) | 0.004** (0.001) | 0.005*** (0.001) | 0.005*** (0.001) |
| _cons | -0.986* (0.523) | -0.534 (0.479) | -1.507*** (0.503) | -1.068** (0.459) | -1.443*** (0.503) | -0.508 (0.479) | -1.480*** (0.502) | -0.534 (0.477) |
| N | 2018 | 2018 | 2018 | 2018 | 2018 | 2018 | 2017 | 2017 |
| Wald chi2 | 132.20*** | 675.81*** | 593.50*** | 1235.32*** | 611.89*** | 678.46*** | 629.84*** | 714.23*** |
| 时间效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
| 地区效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
), ArticleFig(id=1175120787578171693, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=CN, label=表4, caption=
相关和非相关技术多元化对“专精特新”企业突破性创新绩效的影响与调节作用的负二项回归结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | BI |
| 模型1 | 模型2 | 模型3 | 模型4 | 模型5 | 模型6 | 模型7 | 模型8 |
| UTD | | 0.687*** (0.030) | | 0.648*** (0.028) | | 0.685*** (0.030) | | 0.771*** (0.046) |
| RTD | | | 1.139*** (0.055) | 1.139*** (0.055) | 1.158*** (0.056) | | 1.203*** (0.088) | |
| SCM | | | | | 0.121 (0.369) | -0.724 (0.788) | | |
| HHI | | | | | | | -0.690** (0.282) | -0.012 (0.413) |
| RTD×SCM | | | | | -4.397** (2.075) | | | |
| UTD×SCM | | | | | | 0.544 (1.311) | | |
| RTD×HHI | | | | | | | -0.583 (0.716) | |
| UTD×HHI | | | | | | | | -0.851** (0.353) |
| age | -0.015*** (0.004) | -0.012*** (0.004) | -0.012*** (0.004) | -0.008** (0.003) | -0.011*** (0.004) | -0.012*** (0.004) | -0.012*** (0.004) | -0.013*** (0.004) |
| size | 0.061** (0.025) | 0.014 (0.022) | 0.078*** (0.024) | 0.035 (0.022) | 0.076*** (0.023) | 0.014 (0.022) | 0.081*** (0.023) | 0.015 (0.022) |
| RDC | 0.064*** (0.010) | 0.076*** (0.009) | 0.067*** (0.010) | 0.077*** (0.009) | 0.068*** (0.010) | 0.077*** (0.009) | 0.064*** (0.010) | 0.075*** (0.009) |
| NPGR | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) |
| ROA | 0.001 (0.003) | -0.000 (0.003) | 0.000 (0.003) | -0.000 (0.002) | 0.000 (0.003) | -0.000 (0.003) | 0.001 (0.003) | 0.000 (0.003) |
| ind | 0.003 (0.002) | 0.004** (0.001) | 0.004*** (0.001) | 0.005*** (0.001) | 0.004*** (0.001) | 0.004** (0.001) | 0.005*** (0.001) | 0.005*** (0.001) |
| _cons | -0.986* (0.523) | -0.534 (0.479) | -1.507*** (0.503) | -1.068** (0.459) | -1.443*** (0.503) | -0.508 (0.479) | -1.480*** (0.502) | -0.534 (0.477) |
| N | 2018 | 2018 | 2018 | 2018 | 2018 | 2018 | 2017 | 2017 |
| Wald chi2 | 132.20*** | 675.81*** | 593.50*** | 1235.32*** | 611.89*** | 678.46*** | 629.84*** | 714.23*** |
| 时间效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
| 地区效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
), ArticleFig(id=1175120787687223598, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | ln_BI |
| 模型1 | 模型2 | 模型3 | 模型4 | 模型5 | 模型6 | 模型7 | 模型8 |
| UTD | | 0.651*** (0.023) | | 0.570*** (0.021) | | 0.651*** (0.021) | | 0.714*** (0.028) |
| RTD | | | 1.260*** (0.050) | 1.043*** (0.041) | 1.291*** (0.050) | | 1.315*** (0.102) | |
| SCM | | | | | 0.159 (0.181) | -0.431 (0.425) | | |
| HHI | | | | | | | -0.557*** (0.191) | -0.020 (0.294) |
| RTD×SCM | | | | | -6.184*** (1.600) | | | |
| UTD×SCM | | | | | | -0.017 (1.005) | | |
| RTD×HHI | | | | | | | -0.473 (0.775) | |
| UTD×HHI | | | | | | | | -0.646** (0.306) |
| age | -0.014*** (0.005) | -0.010* (0.006) | -0.011** (0.004) | -0.007 (0.005) | -0.011** (0.004) | -0.010 (0.006) | -0.011*** (0.004) | -0.010* (0.005) |
| size | 0.050* (0.026) | 0.001 (0.029) | 0.062** (0.030) | 0.016 (0.028) | 0.059* (0.030) | -0.000 (0.028) | 0.065** (0.030) | 0.003 (0.027) |
| RDC | 0.110*** (0.028) | 0.103*** (0.021) | 0.085*** (0.018) | 0.083*** (0.016) | 0.085*** (0.018) | 0.103*** (0.021) | 0.078*** (0.017) | 0.098*** (0.020) |
| NPGR | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) |
| ROA | 0.000 (0.003) | 0.001 (0.002) | 0.001 (0.003) | 0.001 (0.002) | 0.001 (0.003) | 0.001 (0.002) | 0.001 (0.003) | 0.001 (0.002) |
| ind | 0.003 (0.002) | 0.004*** (0.001) | 0.003* (0.002) | 0.004*** (0.001) | 0.003* (0.002) | 0.004*** (0.001) | 0.005*** (0.002) | 0.005*** (0.001) |
| _cons | 0.607 (0.619) | 0.891 (0.627) | -0.006 (0.701) | 0.348 (0.645) | 0.053 (0.714) | 0.921 (0.624) | -0.041 (0.693) | 0.820 (0.596) |
| N | 2018 | 2018 | 2018 | 2018 | 2018 | 2018 | 2017 | 2017 |
| R2 | 0.065 | 0.279 | 0.228 | 0.387 | 0.233 | 0.280 | 0.237 | 0.287 |
| F | 89.518*** | 194.574*** | 200.530*** | 515.751*** | 270.403*** | 260.347*** | 280.161*** | 269.620*** |
| 时间效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
| 地区效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
), ArticleFig(id=1175120787800469807, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1149642862779875715, language=CN, label=表5, caption=
稳健性检验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | ln_BI |
| 模型1 | 模型2 | 模型3 | 模型4 | 模型5 | 模型6 | 模型7 | 模型8 |
| UTD | | 0.651*** (0.023) | | 0.570*** (0.021) | | 0.651*** (0.021) | | 0.714*** (0.028) |
| RTD | | | 1.260*** (0.050) | 1.043*** (0.041) | 1.291*** (0.050) | | 1.315*** (0.102) | |
| SCM | | | | | 0.159 (0.181) | -0.431 (0.425) | | |
| HHI | | | | | | | -0.557*** (0.191) | -0.020 (0.294) |
| RTD×SCM | | | | | -6.184*** (1.600) | | | |
| UTD×SCM | | | | | | -0.017 (1.005) | | |
| RTD×HHI | | | | | | | -0.473 (0.775) | |
| UTD×HHI | | | | | | | | -0.646** (0.306) |
| age | -0.014*** (0.005) | -0.010* (0.006) | -0.011** (0.004) | -0.007 (0.005) | -0.011** (0.004) | -0.010 (0.006) | -0.011*** (0.004) | -0.010* (0.005) |
| size | 0.050* (0.026) | 0.001 (0.029) | 0.062** (0.030) | 0.016 (0.028) | 0.059* (0.030) | -0.000 (0.028) | 0.065** (0.030) | 0.003 (0.027) |
| RDC | 0.110*** (0.028) | 0.103*** (0.021) | 0.085*** (0.018) | 0.083*** (0.016) | 0.085*** (0.018) | 0.103*** (0.021) | 0.078*** (0.017) | 0.098*** (0.020) |
| NPGR | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) | -0.000 (0.000) |
| ROA | 0.000 (0.003) | 0.001 (0.002) | 0.001 (0.003) | 0.001 (0.002) | 0.001 (0.003) | 0.001 (0.002) | 0.001 (0.003) | 0.001 (0.002) |
| ind | 0.003 (0.002) | 0.004*** (0.001) | 0.003* (0.002) | 0.004*** (0.001) | 0.003* (0.002) | 0.004*** (0.001) | 0.005*** (0.002) | 0.005*** (0.001) |
| _cons | 0.607 (0.619) | 0.891 (0.627) | -0.006 (0.701) | 0.348 (0.645) | 0.053 (0.714) | 0.921 (0.624) | -0.041 (0.693) | 0.820 (0.596) |
| N | 2018 | 2018 | 2018 | 2018 | 2018 | 2018 | 2017 | 2017 |
| R2 | 0.065 | 0.279 | 0.228 | 0.387 | 0.233 | 0.280 | 0.237 | 0.287 |
| F | 89.518*** | 194.574*** | 200.530*** | 515.751*** | 270.403*** | 260.347*** | 280.161*** | 269.620*** |
| 时间效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
| 地区效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
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