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Policy on the High-quality Development of SMEs: Empirical Evidence from “Specialized, Refined, Special and New" SMEs, columnId=1149284496320578211, journalTitle=Journal of Technology Economics, columnName=Enterprise Technology Economics, runingTitle=null, highlight=null, articleAbstract=
Taking technological incentive policy, "notice on the cultivation of specialized, refined, special and new 'Lttle Giant" in 2018, as a quasi-natural experiment, the data of listed enterprises from 2015 to 2021 was adopted to identify the impact of the policy on technological innovation and financing constraints of Little Giant, and then verified the mechanism of the policy on the high-quality development of Little Giant. The results show that the technological incentive policy significantly improves the TFP of Little Giant, with a noticeable time lag. Further analysis verifies that the policy primarily influences the TFP of Little Giant through the interaction of innovation effect and certification effect. Heterogeneity analysis show that the policy has a more significant promoting effect on private enterprises, which extends the microcosmic mechanism of Chinese technological incentive policy to offset financing constraints, deepens the understanding of the effect of incentive policies, and provides theoretical guidance and implementation plans for promoting the high-quality development of Chinese SMEs.
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本文以2018年中国创新激励政策《关于培育专精特新“小巨人”的通知》为准自然实验,通过对2015—2021年上市企业相关数据的收集与分析,探讨该政策对专精特新“小巨人”企业(以下简称“小巨人”企业)在技术创新、融资约束等方面的具体影响,进而验证该政策对“小巨人”企业高质量发展的作用机制。结果表明:①该政策显著提高了“小巨人”企业的全要素生产率,且年度效应滞后一年后逐年递增;②进一步发现,该政策通过创新效应和认证效应两条途径作用于“小巨人”企业的高质量发展;③从异质性的角度出发,与国有企业相比,该政策在推动民营企业发展方面效果更为显著。本文深化了对创新激励政策效果的理解,为促进我国中小企业高质量发展提供了理论指导和实施方案。
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董雪松,博士,湖南农业大学商学院讲师,研究方向:产业政策、资源环境经济学;
(通信作者)唐文源,博士,湖南农业大学商学院副院长,副教授,研究方向:企业管理、技术创新;
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2020 . 3 ): 171 - 182 ., articleTitle=财政科技支出如何影响企业技术创新?——异质性特征,宏微观机制与政府激励结构破解, refAbstract=null)], funds=[Fund(id=1153468935866409448, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, awardId=72404086, language=CN, fundingSource=国家自然科学基金青年科学基金“大国竞争背景下我国优势稀有金属价值链分工地位驱动机理与提升对策研究”(72404086), fundOrder=null, country=null), Fund(id=1153468935950295531, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, awardId=22YJCZH078, language=CN, fundingSource=教育部人文社会科学项目“双碳目标下钢铁行业长流程绿色发展的驱动机制与提升路径研究”(22YJCZH078), fundOrder=null, country=null), Fund(id=1153468936042570222, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, awardId=23B0198, language=CN, fundingSource=湖南省教育厅优秀青年项目“中国新能源汽车行业关键金属需求预测与可持续供应保障研究”(23B0198), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1153468929499455827, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, xref=null, ext=[AuthorCompanyExt(id=1153468929507844436, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, companyId=1153468929499455827, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Business Hunan Agricultural University Changsha 410125 China), AuthorCompanyExt(id=1153468929512038741, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, companyId=1153468929499455827, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=湖南农业大学 商学院 长沙 410125)])], figs=[ArticleFig(id=1153468933530182060, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=9Kyyyp4qnybLwSNkfHrFBA==, figureFileBig=26dg/Pa6xk48geuEsO44jg==, tableContent=null), ArticleFig(id=1153468933593096622, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=图 1, caption=
“专精特新”中小企业总体布局阶段的政策演变过程 (2011-2018 年), figureFileSmall=9Kyyyp4qnybLwSNkfHrFBA==, figureFileBig=26dg/Pa6xk48geuEsO44jg==, tableContent=null), ArticleFig(id=1153468933651816880, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=sQV4P52aWk3YH4KJ+4mTJg==, figureFileBig=aOoiIKByrzZAibQKpxG9Aw==, tableContent=null), ArticleFig(id=1153468933731508658, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=图 2, caption=
“专精特新”中小企业加速推进阶段的政策演变过程 (2019 年至今), figureFileSmall=sQV4P52aWk3YH4KJ+4mTJg==, figureFileBig=aOoiIKByrzZAibQKpxG9Aw==, tableContent=null), ArticleFig(id=1153468933798617524, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=NP9Pn3pWI0XpI479tkQpeA==, figureFileBig=MbEYn3GNqaI9ZuConsb33Q==, tableContent=null), ArticleFig(id=1153468933865726389, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=图 3, caption=
创新激励政策对“小巨人”企业全要素生产率的作用机制, figureFileSmall=NP9Pn3pWI0XpI479tkQpeA==, figureFileBig=MbEYn3GNqaI9ZuConsb33Q==, tableContent=null), ArticleFig(id=1153468933999944120, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=GI09stYjoPrRzBq88VK97Q==, figureFileBig=Y7tD/KauLdtLn27ZF348TA==, tableContent=null), ArticleFig(id=1153468934117384635, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=图 4, caption=
创新激励政策对“小巨人”企业全要素生产率的动态效应, figureFileSmall=GI09stYjoPrRzBq88VK97Q==, figureFileBig=Y7tD/KauLdtLn27ZF348TA==, tableContent=null), ArticleFig(id=1153468934184493501, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=tqwA3ygte0ckqEwCsHlCWw==, figureFileBig=2CxdlEPfOOh1Bjzxt25q2A==, tableContent=null), ArticleFig(id=1153468934255796672, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=图 5, caption=
安慰剂检验, figureFileSmall=tqwA3ygte0ckqEwCsHlCWw==, figureFileBig=2CxdlEPfOOh1Bjzxt25q2A==, tableContent=null), ArticleFig(id=1153468934348071362, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 性质 | 名称 | 符号 | 说明 |
| 解释变量 | 创新激励政策 | Policy | 2018 年工信部发布的《关于开展专精特新“小巨人”企业培育工作的通知》 |
| 被解释变量 | 全要素生产率 | TFP | 基于 OP 法、LP 法和 ACF 法测算的 TFP |
| 创新能力 | \(\lg \_ R\& D\) | 使用企业年研发投入衡量企业技术创新投入能力 |
| lg_patents | 使用企业年专利发明授量来衡量企业技术创新产出能力 |
| \(\lg \_ {PC}\) | 使用企业专利累计数来衡量企业技术创新产出能力 |
| 融资约束 | SA | 用 \({SA}\) 指数来衡量 “小巨人” 企业的融资约束程度 |
| 控制变量 | 企业规模 | \(\lg \_ {NFA}\) | 使用企业固定资产净值来衡量 |
| 财务状况 | \(\lg \_ {OG}\) | 使用营业收入来衡量 |
| 资本结构 | roa | 使用资产负债率来衡量 |
| 发展阶段 | Age | 使用企业年龄来衡量,其中:企业年龄 = 当年年份-企业开业年份+1 |
), ArticleFig(id=1153468934431957445, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 1, caption=
变量的符合与定义, figureFileSmall=null, figureFileBig=null, tableContent=
| 性质 | 名称 | 符号 | 说明 |
| 解释变量 | 创新激励政策 | Policy | 2018 年工信部发布的《关于开展专精特新“小巨人”企业培育工作的通知》 |
| 被解释变量 | 全要素生产率 | TFP | 基于 OP 法、LP 法和 ACF 法测算的 TFP |
| 创新能力 | \(\lg \_ R\& D\) | 使用企业年研发投入衡量企业技术创新投入能力 |
| lg_patents | 使用企业年专利发明授量来衡量企业技术创新产出能力 |
| \(\lg \_ {PC}\) | 使用企业专利累计数来衡量企业技术创新产出能力 |
| 融资约束 | SA | 用 \({SA}\) 指数来衡量 “小巨人” 企业的融资约束程度 |
| 控制变量 | 企业规模 | \(\lg \_ {NFA}\) | 使用企业固定资产净值来衡量 |
| 财务状况 | \(\lg \_ {OG}\) | 使用营业收入来衡量 |
| 资本结构 | roa | 使用资产负债率来衡量 |
| 发展阶段 | Age | 使用企业年龄来衡量,其中:企业年龄 = 当年年份-企业开业年份+1 |
), ArticleFig(id=1153468934515843528, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) | (5) | (6) |
| \(R\& D\) | patents | \({SA}\) | TFP_LP | TFP_ACF | TFP_OP |
| \({DID}\) | 0.0414*(1.66) | \({0.0587}^{** }\) (2.53) | \(-{0.0017}{}^{** *}\) (-3.97) | 0.0134 \({}^{** *}\) (4.51) | 0.0867 \({}^{** *}\) (4.51) | 0.0534 \({}^{** *}\) (4.51) |
| 控制变量 | Yes | Yes | Yes | Yes | Yes | Yes |
| 行业、企业和 时间固定效应 | Yes | Yes | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 | 2902 | 2902 |
| \({R}^{2}\) | 0.763 | 0.322 | 0.762 | 0.994 | 0.655 | 0.860 |
), ArticleFig(id=1153468934612312523, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 2, caption=
创新激励政策与“小巨人”企业全要素生产率, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | (1) | (2) | (3) | (4) | (5) | (6) |
| \(R\& D\) | patents | \({SA}\) | TFP_LP | TFP_ACF | TFP_OP |
| \({DID}\) | 0.0414*(1.66) | \({0.0587}^{** }\) (2.53) | \(-{0.0017}{}^{** *}\) (-3.97) | 0.0134 \({}^{** *}\) (4.51) | 0.0867 \({}^{** *}\) (4.51) | 0.0534 \({}^{** *}\) (4.51) |
| 控制变量 | Yes | Yes | Yes | Yes | Yes | Yes |
| 行业、企业和 时间固定效应 | Yes | Yes | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 | 2902 | 2902 |
| \({R}^{2}\) | 0.763 | 0.322 | 0.762 | 0.994 | 0.655 | 0.860 |
), ArticleFig(id=1153468934700392909, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 替换核心变量 |
| 变量 | (1) | (2) | (3) | (4) |
| 公司专利累计 | 投资水平 | TFP_ACF | TFP_OP |
| DID | \({0.0992}{}^{* }\left({1.83}\right)\) | \({0.0093}^{** *}\left({2.94}\right)\) | \({0.0867}^{** *}\left({4.51}\right)\) | 0.0534 **(4.51) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业和时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2970 | 2902 | 2902 |
| \({R}^{2}\) | 0.325 | 0.696 | 0.655 | 0.860 |
| Panel B: 加入基期企业级控制变量与时间趋势的交互项 |
| 变量 | (1) | (2) | (3) | (4) |
| \(R\& D\) | lg_patents | SA | TFP_LP |
| \({DID}\) | \({0.0630}^{** *}\left({3.06}\right)\) | \({0.0669}{}^{** }\) (4.05) | \(-{0.0013}^{** *}\left({-{3.48}}\right)\) | 0.0147 **(6.34) |
| 加入基期企业级控制变量与 时间趋势的交互项 | Yes | Yes | Yes | Yes |
| 行业、企业和时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.716 | 0.321 | 0.738 | 0.901 |
), ArticleFig(id=1153468934780084686, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 3, caption=
稳健性检验, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 替换核心变量 |
| 变量 | (1) | (2) | (3) | (4) |
| 公司专利累计 | 投资水平 | TFP_ACF | TFP_OP |
| DID | \({0.0992}{}^{* }\left({1.83}\right)\) | \({0.0093}^{** *}\left({2.94}\right)\) | \({0.0867}^{** *}\left({4.51}\right)\) | 0.0534 **(4.51) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业和时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2970 | 2902 | 2902 |
| \({R}^{2}\) | 0.325 | 0.696 | 0.655 | 0.860 |
| Panel B: 加入基期企业级控制变量与时间趋势的交互项 |
| 变量 | (1) | (2) | (3) | (4) |
| \(R\& D\) | lg_patents | SA | TFP_LP |
| \({DID}\) | \({0.0630}^{** *}\left({3.06}\right)\) | \({0.0669}{}^{** }\) (4.05) | \(-{0.0013}^{** *}\left({-{3.48}}\right)\) | 0.0147 **(6.34) |
| 加入基期企业级控制变量与 时间趋势的交互项 | Yes | Yes | Yes | Yes |
| 行业、企业和时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.716 | 0.321 | 0.738 | 0.901 |
), ArticleFig(id=1153468934859776464, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 插补估计量 | 计算组别-时期平均处理效应 | 堆叠回归估计量 |
| 变量 | TFP_LP | TFP_LP | TFP_LP |
| \({DID}\) | \({0.0175}^{** *}\left\lbrack {2.83}\right\rbrack\) | 0.0142 \({}^{** }\) (2.44) | 0.0242 ***( 3.15 ) |
| 样本量 | 2020 | 2020 | 8740 |
| \({R}^{2}\) | - | 0.5722 | 0.9816 |
| 变量 | \({SA}\) | SA | SA |
| \({DID}\) | \(-{0.0012}{}^{** *}\left\lbrack {-{2.65}}\right\rbrack\) | \(-{0.0013}{}^{** }\left({-{2.81}}\right)\) | \(-{0.0013}{}^{** *}\left({-{3.66}}\right)\) |
| 样本量 | 2098 | 2098 | 9364 |
| \({R}^{2}\) | - | 0.5128 | 0.9707 |
| 变量 | lg_patents | lg_patents | lg_patents |
| \({DID}\) | 0.0352 ***[ 2.70 ] | 0.0341 \({}^{** }\) (2.36) | 0.0644 \({}^{** }\) (2.21) |
| 样本量 | 2098 | 2098 | 9364 |
| \({R}^{2}\) | - | 0.9577 | 0.9617 |
| 变量 | \(\lg \_ R\& D\) | \(\lg \_ R\& D\) | \(\lg \_ R\& D\) |
| \({DID}\) | \({0.0950}^{** *}\left\lbrack {3.54}\right\rbrack\) | \({0.0415}{}^{** }\left({1.97}\right)\) | \({0.0508}{}^{** }\) (2.39) |
| 样本量 | 2098 | 2098 | 9364 |
| \({R}^{2}\) | - | 0.9534 | 0.9537 |
| 控制变量 | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes |
), ArticleFig(id=1153468934947856851, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 4, caption=
稳健性检验: 异质性稳健 DID 估计量, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 插补估计量 | 计算组别-时期平均处理效应 | 堆叠回归估计量 |
| 变量 | TFP_LP | TFP_LP | TFP_LP |
| \({DID}\) | \({0.0175}^{** *}\left\lbrack {2.83}\right\rbrack\) | 0.0142 \({}^{** }\) (2.44) | 0.0242 ***( 3.15 ) |
| 样本量 | 2020 | 2020 | 8740 |
| \({R}^{2}\) | - | 0.5722 | 0.9816 |
| 变量 | \({SA}\) | SA | SA |
| \({DID}\) | \(-{0.0012}{}^{** *}\left\lbrack {-{2.65}}\right\rbrack\) | \(-{0.0013}{}^{** }\left({-{2.81}}\right)\) | \(-{0.0013}{}^{** *}\left({-{3.66}}\right)\) |
| 样本量 | 2098 | 2098 | 9364 |
| \({R}^{2}\) | - | 0.5128 | 0.9707 |
| 变量 | lg_patents | lg_patents | lg_patents |
| \({DID}\) | 0.0352 ***[ 2.70 ] | 0.0341 \({}^{** }\) (2.36) | 0.0644 \({}^{** }\) (2.21) |
| 样本量 | 2098 | 2098 | 9364 |
| \({R}^{2}\) | - | 0.9577 | 0.9617 |
| 变量 | \(\lg \_ R\& D\) | \(\lg \_ R\& D\) | \(\lg \_ R\& D\) |
| \({DID}\) | \({0.0950}^{** *}\left\lbrack {3.54}\right\rbrack\) | \({0.0415}{}^{** }\left({1.97}\right)\) | \({0.0508}{}^{** }\) (2.39) |
| 样本量 | 2098 | 2098 | 9364 |
| \({R}^{2}\) | - | 0.9534 | 0.9537 |
| 控制变量 | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes |
), ArticleFig(id=1153468935031742934, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | TFP_LP | \(\lg \_ R\& D\) | lg_patents | \({SA}\) |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
| \(2 \times 2 -{DID}\) 控制组类别 | 权重 | 系数 | 权重 | 系数 | 权重 | 系数 | 权重 | 系数 |
| 先处理组 \({vs}\) 后处理组 | 0.0146 | -0.0005 | 0.0146 | 0.0411 | 0.0146 | -0.0411 | 0.0146 | -0.0027 |
| 后处理组 \({vs}\) 先处理组 | 0.0037 | 0.1081 | 0.0037 | -0.1081 | 0.0037 | -0.0270 | 0.0037 | 0.0000 |
| 处理 \({vs}\) 从未处理 | 0.9817 | 0.0300 | 0.9817 | 0.1369 | 0.9817 | 0.0709 | 0.9817 | -0.0033 |
), ArticleFig(id=1153468935107240410, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 5, caption=
稳健性检验: Goodman-Bacon 分解方法, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | TFP_LP | \(\lg \_ R\& D\) | lg_patents | \({SA}\) |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
| \(2 \times 2 -{DID}\) 控制组类别 | 权重 | 系数 | 权重 | 系数 | 权重 | 系数 | 权重 | 系数 |
| 先处理组 \({vs}\) 后处理组 | 0.0146 | -0.0005 | 0.0146 | 0.0411 | 0.0146 | -0.0411 | 0.0146 | -0.0027 |
| 后处理组 \({vs}\) 先处理组 | 0.0037 | 0.1081 | 0.0037 | -0.1081 | 0.0037 | -0.0270 | 0.0037 | 0.0000 |
| 处理 \({vs}\) 从未处理 | 0.9817 | 0.0300 | 0.9817 | 0.1369 | 0.9817 | 0.0709 | 0.9817 | -0.0033 |
), ArticleFig(id=1153468935174349276, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 国有企业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | SA | TFP_LP |
| \({DID}\) | -0.0541 (-0.67) | -0.0297 (-0.12) | -0.0008 (-0.72) | \({0.0117}^{** *}\left({2.77}\right)\) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.763 | 0.119 | 0.777 | 0.994 |
| Panel B: 民营企业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | SA | TFP_LP |
| \({DID}\) | 0.0461 \({}^{* }\) (1.85) | 0.248 ***(3.09) | -0.0011 ***(-3.15) | 0.0267 ***(3.92) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.763 | 0.122 | 0.779 | 0.994 |
), ArticleFig(id=1153468935245652446, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 6, caption=
异质性分析: 不同所有制, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 国有企业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | SA | TFP_LP |
| \({DID}\) | -0.0541 (-0.67) | -0.0297 (-0.12) | -0.0008 (-0.72) | \({0.0117}^{** *}\left({2.77}\right)\) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.763 | 0.119 | 0.777 | 0.994 |
| Panel B: 民营企业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | SA | TFP_LP |
| \({DID}\) | 0.0461 \({}^{* }\) (1.85) | 0.248 ***(3.09) | -0.0011 ***(-3.15) | 0.0267 ***(3.92) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.763 | 0.122 | 0.779 | 0.994 |
), ArticleFig(id=1153468935350510049, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 高技术产业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | SA | TFP_LP |
| DID | 0.4693 **(2.15) | 0.1264 \({}^{** *}\) (2.94) | \(-{0.00189}^{** }\) (-2.40) | 0.0989 (1.42) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.742 | 0.197 | 0.873 | 0.843 |
| Panel B:传统产业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | \({SA}\) | TFP_LP |
| DID | -0.4784 (-1.34) | 0.0568 (0.79) | -0.0001 (-0.01) | 0.1021 (0.73) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.742 | 0.196 | 0.873 | 0.843 |
), ArticleFig(id=1153468935446979043, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 7, caption=
异质性分析: 不同行业, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 高技术产业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | SA | TFP_LP |
| DID | 0.4693 **(2.15) | 0.1264 \({}^{** *}\) (2.94) | \(-{0.00189}^{** }\) (-2.40) | 0.0989 (1.42) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.742 | 0.197 | 0.873 | 0.843 |
| Panel B:传统产业 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | \({SA}\) | TFP_LP |
| DID | -0.4784 (-1.34) | 0.0568 (0.79) | -0.0001 (-0.01) | 0.1021 (0.73) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2983 | 2983 | 2983 | 2902 |
| \({R}^{2}\) | 0.742 | 0.196 | 0.873 | 0.843 |
), ArticleFig(id=1153468935526670819, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 东部地区 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | \({SA}\) | TFP_LP |
| \({DID}\) | \({0.0518}^{** }\) (2.27) | 0.0742 **(2.24) | \(-{0.0017}^{** *}\) (-3.81) | \({0.0385}^{** *}\) (3.89) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2970 | 2970 | 2983 | 2889 |
| \({R}^{2}\) | 0.742 | 0.197 | 0.797 | 0.844 |
| Panel B: 西部和中部地区 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | \({SA}\) | TFP_LP |
| \({DID}\) | -0.0282 (-0.92) | 0.0006 (0.01) | 0.0001 (0.18) | -0.0112 (-0.73) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2970 | 2970 | 2983 | 2889 |
| \({R}^{2}\) | 0.742 | 0.196 | 0.794 | 0.843 |
), ArticleFig(id=1153468935623139812, tenantId=1146029695717560320, journalId=1146120045056339983, articleId=1153438286640042091, language=CN, label=表 8, caption=
异质性分析: 不同地区, figureFileSmall=null, figureFileBig=null, tableContent=
| Panel A: 东部地区 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | \({SA}\) | TFP_LP |
| \({DID}\) | \({0.0518}^{** }\) (2.27) | 0.0742 **(2.24) | \(-{0.0017}^{** *}\) (-3.81) | \({0.0385}^{** *}\) (3.89) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2970 | 2970 | 2983 | 2889 |
| \({R}^{2}\) | 0.742 | 0.197 | 0.797 | 0.844 |
| Panel B: 西部和中部地区 |
| 变量 | (1) | (2) | (3) | (4) |
| \(\lg \_ R\& D\) | lg_patents | \({SA}\) | TFP_LP |
| \({DID}\) | -0.0282 (-0.92) | 0.0006 (0.01) | 0.0001 (0.18) | -0.0112 (-0.73) |
| 控制变量 | Yes | Yes | Yes | Yes |
| 行业、企业、时间固定效应 | Yes | Yes | Yes | Yes |
| 样本量 | 2970 | 2970 | 2983 | 2889 |
| \({R}^{2}\) | 0.742 | 0.196 | 0.794 | 0.843 |
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