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Research on Financial Performance of State-owned Enterprise Mixed Ownership Reform 被引量:2
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作者 DU Qian 《International English Education Research》 2018年第4期13-16,共4页
Mixed ownership is an important form of realization of China's economic system reform and development, and it is also the main direction of state-owned enterprise reform. In order to further promote the deepening of ... Mixed ownership is an important form of realization of China's economic system reform and development, and it is also the main direction of state-owned enterprise reform. In order to further promote the deepening of the reform of mixed ownership, this paper randomly selects 200 listed state-owned enterprises as research objects, and studies the trends of the financial performance of these enterprises from the mixed state-owned enterprises and non-mixed-modification enterprises in the five years from 2013 to 2017, and compares their various trends. Financial indicators, a comprehensive evaluation of the problems and causes in the reform of the mixed ownership system, and then propose countermeasures to further deepen the reform of mixed ownership based on the research conclusions. 展开更多
关键词 state-owned enterprises mixed ownership reform financial performance empirical research
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Natural Monopoly and Mixed Ownership Reform--Based on Natural Experiment and Cost Function Analysis Method
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作者 Chen Lin 《China Economist》 2018年第5期60-83,共24页
Despite a multitude of theoretical discussions on China's mixed ownership reform, very few studies have addressed realistic questions concerning the implementation of the reform. The Resolutions of the Third Plenu... Despite a multitude of theoretical discussions on China's mixed ownership reform, very few studies have addressed realistic questions concerning the implementation of the reform. The Resolutions of the Third Plenum of the 18 th CPC Central Committee and other reform strategies have outlined the reform of sectors with natural monopoly, including urban public utility sectors. The question is how mixed ownership reform should be carried out in sectors of natural monopoly, or which public utilities sectors should enjoy priority of mixed ownership reform. To answer this question, this paper employs data of large public utility enterprises in China from 1998 to 2008, and estimates the natural monopoly attribute at the industry level and corporate total factor productivity(TFP) using cost function analysis method excluding the impact of product price factor. Based on the difference-indifferences-in-differences(DDD) method of natural experiment, an empirical test is carried out for the relationship among natural monopoly, mixed ownership reform and corporate productivity. Our results suggest that:(1) Statistically, mixed ownership reform cannot significantly increase corporate TFP in sectors with natural monopoly;(2) mixed ownership reform should not be carried out indiscriminately on a nationwide basis and for all public utilities sectors. Such an attempt of reform without distinguishing natural monopoly and the level of competitiveness is fraught with policy uncertainties;(3) relative to sectors with natural monopoly, corporate productivity in competitive sectors after mixed ownership reform will improve more significantly and enjoy greater "policy dividends" of institutional reform. Therefore, mixed ownership reform should be carried out first in competitive sectors. 展开更多
关键词 mixed ownership REFORM NATURAL MONOPOLY cost function NATURAL experiment difference-in-differences-in-differences(DDD)method
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Game analysis of control right of state-owned shares under the background of the mixed ownership
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作者 WANG Ting-ting LI Zhen-guo 《Ecological Economy》 2015年第1期89-98,共10页
Since the Third Plenary Session of the 18 th Central Committee of the Communist Party of China, the concept of the mixed ownership economy has received extensive attention from all sectors of society, which has effect... Since the Third Plenary Session of the 18 th Central Committee of the Communist Party of China, the concept of the mixed ownership economy has received extensive attention from all sectors of society, which has effect on a coming new round of reformation on enterprise property. However, in order to take control of the state-owned shares in the end making the state ownership economy become the principal position and to enlarge the scale of state-owned shares, which guides the common development with the non-public sectors of the economy, how to determine the proportion of state-owned shares? Under the background of the mixed ownership reformation, the article explains the mixed ownership by explaining how to enlarge the state-owned assets controlling scale and how to improve the stateowned company 'economic effi ciency and how to protect the interests of small shareholders. The final conclusion is that the SASAC should use the thinking of relative holdings, instead of the absolute control thinking, and should make use of the games among the large shareholders and the pyramidal ownership structure to make the pattern of ownership diversify. 展开更多
关键词 mixed ownership ownership structure STATE-OWNED SHARES GAME theory
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混合所有制视域下产业学院研究热点追溯与展望——基于中国知网(CNKI)来源期刊的文献研究(2016-2024)
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作者 李弢 罗祥远 卢荣 《重庆电子工程职业学院学报》 2024年第4期40-48,共9页
研究通过对我国2016年到2024年之间的中国知网(CNKI)中文期刊相关文献进行综述发现,在国家层面职业教育改革系列政策文件的推动下,我国混合所有制视域下产业学院研究经历了理论构建与设想、实践运行与总结、高质发展与深化三个阶段。领... 研究通过对我国2016年到2024年之间的中国知网(CNKI)中文期刊相关文献进行综述发现,在国家层面职业教育改革系列政策文件的推动下,我国混合所有制视域下产业学院研究经历了理论构建与设想、实践运行与总结、高质发展与深化三个阶段。领域内的研究热点主要集中在混合所有制产业学院的组建逻辑、建设路径、运行困境和发展方向四个方面。混合所有制产业学院通过多元主体合作的形式,成为了连接政府、学校、企业三方的重要载体,同时也深入推动了产教融合。但在现实运行中仍面临法人地位模糊、治理困难、激励不足、定位不明等多重困境。因此,构建内涵更为丰富、格局更为宽广的行业型、区域型产业学院共同体将成为混合所有制视域下产业学院研究的新风向。 展开更多
关键词 产业学院 混合所有制 共同体 组织创新
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A novel thermoregulated phosphine ligand used for the Rh-catalyzed hydroformylation of mixed C_(11-12) olefins in aqueous/organic biphasic system 被引量:2
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作者 Zhi Jiang Ji,Jing Yang Jiang,Yan Hua Wang State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116012,China 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第5期515-518,共4页
A novel thermoregulated phosphine ligand PhP(CHCHO)CH(n=22) was synthesized and used for the Rh-catalyzed hydroformylation of mixed Colefins in aqueous/organic biphasic system.Under the optimized conditions,pressure =... A novel thermoregulated phosphine ligand PhP(CHCHO)CH(n=22) was synthesized and used for the Rh-catalyzed hydroformylation of mixed Colefins in aqueous/organic biphasic system.Under the optimized conditions,pressure =5 MPa (H:CO=1:1),phosphine/Rh =13(molar ratio),reaction time =6 h and temperature =130℃,the conversion of Colefins and the yield of aldehyde are 99%and 94%,respectively.The catalyst retained in aqueous phase can be easily separated from the product-containing organic phase by simple phase separation and the catalytic activity remains almost constant after four consecutive cycles. 展开更多
关键词 Thermoregulated phosphine ligand mixed C11-12 olefins HYDROFORMYLATION RHODIUM
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Mixed Conduction in BaCe0.8Pr0.2O3-α Ceramic 被引量:1
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作者 Mao-yuan Wang Li-gan Qiu 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 北大核心 2008年第3期286-290,共5页
BaCe0.8Pr0.2O3-α ceramic was synthesized by high temperature solid-state reaction. The structural characteristics and the phase purity of the crystal were determined using powder X-ray diffraction analysis. By using ... BaCe0.8Pr0.2O3-α ceramic was synthesized by high temperature solid-state reaction. The structural characteristics and the phase purity of the crystal were determined using powder X-ray diffraction analysis. By using the methods of AC impedance spectroscopy, gas concentration cell and electrochemical pumping of hydrogen, the conductivity and ionic transport number of BaCe0.8Pr0.2O3-α were measured, and the electrical conduction behavior of the material was investigated in different gases in the temperature range of 500-900℃. The results indicate that the material was of a single perovskite-type orthorhombic phase. From 500℃ to 900 ℃, electronic-hole conduction was dominant in dry and wet oxygen, air or nitrogen, and the total conductivity of the material increased slightly with increasing oxygen partial pressure in the oxygen partial pressure range studied. Ionic conduction was dominant in wet hydrogen, and the total conductivity was about one or two orders of magnitude higher than that in hydrogen-free atmosphere (oxygen, air or nitrogen) 展开更多
关键词 BaCe0.8Pr0.2O3-α AC impedance Gas concentration cell Electrochemical pumping of hy-drogen mixed conduction
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Synergistic Effect in Mixed Capillary Gas Chromatographic Stationap Phases Containing Heptakis(2,3,6-tri-o-pentyl)-β-cyclodextrin and Dibenzo-18-crown-6 被引量:1
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作者 Li Ming YUAN Ruo Nong FU +3 位作者 Xue Xian CHEN Shi Hong GUl Rong Ji DAI (Chemistry Department of Yunnan Normal University.Kunming 650092)(Department of Chemical Engineering.Beijing institute of Technology,BEijing 100081)(Solar Energy Research Institute ofyunna 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第3期223-226,共4页
used-silical capillary columns containing heptakis(2、3、6-tri-o-pentyl)-β-cyclodextrinand dibenzo-18-crown-6 were prepared.By studying the selectivity of mixed stationary phases forsome solute pairs.as well a... used-silical capillary columns containing heptakis(2、3、6-tri-o-pentyl)-β-cyclodextrinand dibenzo-18-crown-6 were prepared.By studying the selectivity of mixed stationary phases forsome solute pairs.as well as comparing with the heptakis(2.3、6-tri-O-pentyl)-β-cyclodextrin and thedibenzo-18-crown-6 used as individual stationary phase、the synergistic effects were observed.These effects were affected by the column temperature.mixed ratio and linear velocity of carrier gas. 展开更多
关键词 Gas chromatography mixed stationary phase synergistic effect heptakis(2.3.6-tri-o-pentyl)-β-cyclodextrin DIBENZO-18-CROWN-6
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Ce_xTi_(1-x)O_2 Mixed Oxides Supported CuO Catalyst for NO Reduction by CO 被引量:1
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作者 楼莉萍 蒋晓原 +3 位作者 陈英旭 吕光烈 周仁贤 郑小明 《Journal of Rare Earths》 SCIE EI CAS CSCD 2003年第3期331-336,共6页
Ce x Ti 1- x O 2 mixed oxides of different mole ratios ( x =0, 0.1, 0.2~0.9, 1.0) were prepared by co precipitation of TiCl 4 with Ce(NO 3) 3 and then loaded with different amounts of CuO. The effe... Ce x Ti 1- x O 2 mixed oxides of different mole ratios ( x =0, 0.1, 0.2~0.9, 1.0) were prepared by co precipitation of TiCl 4 with Ce(NO 3) 3 and then loaded with different amounts of CuO. The effects of CuO on NO+CO reaction were investigated, and the structure and reductive properties of various CuO/Ce x Ti 1- x O 2 were characterized by the methodologies of BET, TPR and XRD. The results show that different Ce/Ti mole ratios and calcination temperatures induce changes of structure and reductive properties of the Ce x Ti 1- x O 2 mixed oxides. When x =0.1~0.5, amorphous CeTi 2O 6 phase mainly forms at 650 ℃ compared to the formation of CeTi 2O 6 which crystallizes at 800 ℃. When x >0.6, some TiO 2 enters the CeO 2 lattice and a CeO 2 TiO 2 solid solution is formed. The activity of 6%CuO/Ce x Ti 1- x O 2 calcined at 650 ℃ is largely affected by the x values, which is the highest when x =0.3, 0.4 and 0.9. The NO conversion reaches 70% at a reaction temperature of 150 ℃. By comparison, the x values have little effect on the activity of 6%CuO/Ce x Ti 1- x O 2 calcined at 800 ℃ . There are strong interactions between CuO and CeTi 2O 6, i.e., formation of the CeTi 2O 6 phase shifts the CuO reduction peak temperature from 380 to 200 ℃, and CuO, in turn, shifts the CeTi 2O 6 reduction peak temperature from 600 to 300 ℃. 展开更多
关键词 catalitic chemistry Ce x Ti 1- x O 2 mixed oxides CuO/Ce x Ti 1- x O 2 catalysts CeTi 2O 6 phase NO+CO reaction activity rare earths
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Fuzzy-Model-Based Finite Frequency Fault Detection Filtering Design for Two-Dimensional Nonlinear Systems
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作者 Meng Wang Huaicheng Yan +1 位作者 Jianbin Qiu Wenqiang Ji 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第10期2099-2110,共12页
This article studies the fault detection filtering design problem for Roesser type two-dimensional(2-D)nonlinear systems described by uncertain 2-D Takagi-Sugeno(T-S)fuzzy models.Firstly,fuzzy Lyapunov functions are c... This article studies the fault detection filtering design problem for Roesser type two-dimensional(2-D)nonlinear systems described by uncertain 2-D Takagi-Sugeno(T-S)fuzzy models.Firstly,fuzzy Lyapunov functions are constructed and the 2-D Fourier transform is exploited,based on which a finite frequency fault detection filtering design method is proposed such that a residual signal is generated with robustness to external disturbances and sensitivity to faults.It has been shown that the utilization of available frequency spectrum information of faults and disturbances makes the proposed filtering design method more general and less conservative compared with a conventional nonfrequency based filtering design approach.Then,with the proposed evaluation function and its threshold,a novel mixed finite frequency H_(∞)/H_(-)fault detection algorithm is developed,based on which the fault can be immediately detected once the evaluation function exceeds the threshold.Finally,it is verified with simulation studies that the proposed method is effective and less conservative than conventional non-frequency and/or common Lyapunov function based filtering design methods. 展开更多
关键词 Fault diagnosis finite frequency specifications mixed H_(∞)/H_(-)performance two-dimensional nonlinear systems
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On the Mixed Propagator Approach to ρ-ω Mixing
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作者 YAN Mu-Lin JIANG Ji-Hao WANG Xiao-Jun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2002年第8期195-199,共5页
The mixed propagator (MP) approach to ρ-ω mixing is discussed. It is found that under the pole-approximation assumption the results of MP approach is not compatible both with the effective Lagrangian theory andwith ... The mixed propagator (MP) approach to ρ-ω mixing is discussed. It is found that under the pole-approximation assumption the results of MP approach is not compatible both with the effective Lagrangian theory andwith the experiment measurement criterion. To overcome these inconsistent, we propose a new MP approach in whichthe physical states of ρ and ω are determined by the requirement of experimental measurement to meson resonance. Interms of this new MP approach, the EM pion form factor Fπ and form factors of ρo →π0γ and of ω→πo γ are derived.The results of Fπ are in good agreement with data. The form factor of ρo →π0γ exhibits a hidden charge-asymmetryenhancement effect which agrees with the prediction of the effective Lagrangian theory. 展开更多
关键词 ISOSPIN breaking VMD ρ-ω mixing DECAY of vector MESONS
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MIXED MODE SCC OF 18-8 STAINLESS STEEL IN BOILING 42% MgCl_2 SOLUTION
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作者 GAO Hua CAO Weijie ZHOU Deqi WANG Ruizhen Shanghai University of Engineering Science,Shanghai,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1992年第8期104-109,共6页
A series of mixed mode tests were carried out on 18-8 stainless steel in boiling 42% MgCl_2 solution.The results show that for any K_Ⅱ/K_Ⅰ ratio,the SCC direction coin- cides well with the crack tip maximum normal s... A series of mixed mode tests were carried out on 18-8 stainless steel in boiling 42% MgCl_2 solution.The results show that for any K_Ⅱ/K_Ⅰ ratio,the SCC direction coin- cides well with the crack tip maximum normal stress plane,while the SCC resistance of the material reduces as the ratio of K_Ⅱ/K_Ⅰ increases.The experimental results were discussed in the light of anode dissolving mechanism and the effect of mixed mode loading on crack tip stress and strain.It is concluded that for fracture analysis if mixed mode cracks were simply taken into account as mode Ⅰ cracks,and only mode Ⅰ testing results as mode Ⅰ fracture criter- ion were employed,it may not be safe. 展开更多
关键词 18-8 stainless steel stress corrosion mixed mode
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Effect of Calcination Temperature on Structure and O_2 Desorption Properties of Ce_xPr_(1-x)O_(2-δ) Mixed Oxides
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作者 闫宗兰 石军 +2 位作者 步雅璠 赵鹏英 王谌 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S2期35-39,共5页
A series of CexPr1-xO2-δ (x=0, 0.5, 0.9, 1.0) mixed oxide calcined at different temperatures were synthesized by sol-gel method and characterized by Raman, XRD and O2-TPD techniques. When x=0.9, only a cubic phase Ce... A series of CexPr1-xO2-δ (x=0, 0.5, 0.9, 1.0) mixed oxide calcined at different temperatures were synthesized by sol-gel method and characterized by Raman, XRD and O2-TPD techniques. When x=0.9, only a cubic phase CeO2 is observed. When x=0.5, the compound was combined by Pr6O11 and CeO2 mixed oxides. For CexPr1-xO2-δ (x=0.5, 0.9)samples 465 cm-1 Raman peak is attributed to the Raman active F2g mode of CeO2. The broad peak at about 570 cm-1 can be linked to lattice defects resulting in oxygen vacancies. The crystallite size of the samples increased as increasing the calcined temperature. But the increased value of Ce0.9Pr0.1O2-δ and Ce0.5Pr0.5O2-δ is smaller than single CeO2 and Pr6O11 obviously. It reveals that the insertion of Pr atom into the ceria lattice could enhance the sintering resistance and thermal stability of the mixed oxides. Calcination temperatures had great effect on the peak intensity for CeO2 but less effect on Ce0.8Pr0.2O2-δ in Raman spectra, and it may be caused by the colors transformation of the mixed oxides. The result of O2-TPD experiment indicates that the formation of solid solution has elevation the stabilization and thermal stability of the mixed oxides. 展开更多
关键词 CexPr1-xO2-δ mixed oxides O2-TPD rare earths
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Mixed-ownership Reform:Private Firms’Role in Targeted Poverty Alleviation-A Perspective on Resource Complementarity and Check&Balance
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作者 Ding Hui He Dongxin +1 位作者 Jiang Fuwei Zhang Zhining 《China Economist》 2024年第5期25-47,共23页
Targeted poverty alleviation(TPA)serves as a winning formula for fighting poverty and has generated valuable experiences for achieving common prosperity.The mixed-ownership reform has enhanced corporate economic perfo... Targeted poverty alleviation(TPA)serves as a winning formula for fighting poverty and has generated valuable experiences for achieving common prosperity.The mixed-ownership reform has enhanced corporate economic performance.However,further testing is required to assess whether enterprises contribute to the improvement of distribution by participating in TPA.Taking A-share-listed private enterprises between 2016 and 2021 as research samples,we conducted an investigation into the extent and manner in which the mixed-ownership reform contributes to TPA.Our research reveals that a higher proportion of state capital equity participation is correlated with a greater level of private enterprises’contribution to TPA.This indicates that the mixed-ownership reform is beneficial for prompting private enterprises to shoulder responsibilities for building a society of common prosperity.As shown by the mechanism test,state capital equity participation encourages private enterprises to contribute to TPA primarily by alleviating corporate financing constraints through the resource complementarity effect.In contrast,the check&balance effect of promoting corporate poverty alleviation by mitigating the principal-agent problem has not yet been significantly demonstrated.Regarding the poverty alleviation model,state capital equity participation prompts private enterprises to contribute to TPA through industrial development,educational investment,and environmental protection,emphasizing a combination of providing external assistance and cultivating endogenous development capacity.In terms of TPA regions,state capital equity participation plays a significant role in supporting economically less-developed regions,regions with high unemployment rates,and central and western regions.This paper provides new empirical evidence for deepening mixed-ownership reforms and advancing common prosperity. 展开更多
关键词 mixed ownership TPA state capital resource complementarity check&balance
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基于Monte Carlo模拟的Mixed Logit模型求解研究 被引量:1
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作者 张羽祥 赵胜川 《交通标准化》 2009年第1期112-115,共4页
Mixed Logit模型因能有效地避免其他离散选择模型的限制而被广泛地运用于交通领域,但由于它概率形式的非封闭性而导致了复杂的求解过程。从理论上证明利用Monte Carlo模拟方法求解Mixed Logit模型具有一定的合理性,并给出具体的求解步骤... Mixed Logit模型因能有效地避免其他离散选择模型的限制而被广泛地运用于交通领域,但由于它概率形式的非封闭性而导致了复杂的求解过程。从理论上证明利用Monte Carlo模拟方法求解Mixed Logit模型具有一定的合理性,并给出具体的求解步骤,可有效简化Mixed Logit模型的求解过程。 展开更多
关键词 mixed LOGIT模型 MONTE CARLO模拟 牛顿-拉普松算法
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一种基于停止-转发MIX的统计型攻击
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作者 徐红云 刘京 李孟杰 《小型微型计算机系统》 CSCD 北大核心 2010年第11期2217-2221,共5页
为了增强匿名系统的匿名性,更好地保护用户的通信隐私,基于停止-转发MIX提出一种新的统计型攻击算法.算法将攻击者的连续观察时间划分成t个周期,每个周期统计MIX节点输出信息包的接收者集合,称之为一个观察集合,获得t个观察集合后,采用... 为了增强匿名系统的匿名性,更好地保护用户的通信隐私,基于停止-转发MIX提出一种新的统计型攻击算法.算法将攻击者的连续观察时间划分成t个周期,每个周期统计MIX节点输出信息包的接收者集合,称之为一个观察集合,获得t个观察集合后,采用概率统计、集合运算等方法,确定目标发送者的接收者集合.指出采用填充包技术防御该攻击时,可以增加攻击所需的观察集合数,降低攻击的有效性. 展开更多
关键词 数据隐私 网络安全 匿名系统 停止-转发mix 统计型攻击
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Research on Mixed Ownership Reform of State-Owned Enterprises from the Perspective of Marxist Political Economy
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作者 Honghong Lu 《Proceedings of Business and Economic Studies》 2024年第5期61-67,共7页
Under China’s socialist system,state-owned enterprises are key forces driving the economic trajectory and providing strong momentum.These enterprises not only bear the crucial responsibility of advancing the process ... Under China’s socialist system,state-owned enterprises are key forces driving the economic trajectory and providing strong momentum.These enterprises not only bear the crucial responsibility of advancing the process of national modernization but also serve as the core of the national economic lifeline through their irreplaceable status and function amidst changing times.In the new era,with the advent of the technological revolution and the wave of globalization,state-owned enterprises face unprecedented opportunities and challenges.As a significant aspect of state-owned enterprise reform,the mixed ownership reform is not only a transformation in the structure of enterprise ownership but also a reflection of China’s broader,comprehensive reform efforts.By deeply advancing this reform,it will help optimize the allocation of state-owned assets and significantly boost technological and management innovation within state-owned enterprises,ensuring their competitiveness in the intense market environment.Therefore,this paper will conduct an in-depth analysis of the mixed ownership reform of state-owned enterprises from the perspective of Marxist political economy. 展开更多
关键词 Marxist political economy State-owned enterprise reform mixed ownership
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非高管员工持股影响混合所有制企业创新的路径分析--基于结构方程模型的多重中介效应 被引量:2
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作者 王新红 孙美娟 《华东经济管理》 北大核心 2023年第8期59-70,共12页
文章以2014—2020年我国实施员工持股计划的混合所有制上市企业为研究样本,采用结构方程模型(SEM)探究非高管员工持股对企业创新的影响路径。研究表明:持股强度与持股广度对混合所有制企业创新的影响存在差异,其中持股强度影响企业创新... 文章以2014—2020年我国实施员工持股计划的混合所有制上市企业为研究样本,采用结构方程模型(SEM)探究非高管员工持股对企业创新的影响路径。研究表明:持股强度与持股广度对混合所有制企业创新的影响存在差异,其中持股强度影响企业创新的效应为正,而持股广度对企业创新的影响效应为负,且该负面影响大于持股强度的正面影响,说明非高管员工的大规模持股会稀释员工持股计划的激励作用,反而不利于混合所有制企业创新;在非高管员工持股影响混合所有制企业创新的作用路径中,直接作用路径发挥了主要作用,贡献率为71.66%,而28.34%是通过间接作用路径实现的,其中风险承担路径的贡献率最高,为11.02%,融资约束路径及人才保留路径次之,分别为5.26%和5.12%。因此,混合所有制企业实施员工持股计划时,应合理设计持股比例、持股范围等契约要素,以充分发挥员工持股在混合所有制企业中的制度改革效应和创新激励效应。 展开更多
关键词 非高管员工持股 企业创新 混合所有制企业 路径分析 结构方程模型
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The role of surface waves in the ocean mixed layer 被引量:13
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作者 QIAO Fangli YANG Yongzeng XIA Changshui YUAN Yeli 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2008年第3期30-37,共8页
Previously, most ocean circulation models have overlooked the role of the surface waves. As a result, these models have produced insufficient vertical mixing, with an under - prediction of the ,nixing layer (ML) dep... Previously, most ocean circulation models have overlooked the role of the surface waves. As a result, these models have produced insufficient vertical mixing, with an under - prediction of the ,nixing layer (ML) depth and an over - prediction of the sea surface temperature (SST), particularly during the summer season. As the ocean surface layer determines the lower boundary conditions of the atmosphere, this deficiency has severely limited the performance of the coupled ocean - atmospheric models and hence the climate studies. To overcome this shortcoming, a new parameterization for the wave effects in the ML model that will correct this systematic error of insufficient mixing. The new scheme has enabled the mixing layer to deepen, the surface excessive heating to be corrected, and an excellent agreement with observed global climatologic data. The study indicates that the surface waves are essential for ML formation, and that they are the primer drivers of the upper ocean dynamics; therefore, they are critical for climate studies. 展开更多
关键词 wave - induced mixing ocean circulation model mixing layer
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国有股权参与、吸收能力与民营企业绿色技术创新--一个有调节的中介效应模型 被引量:5
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作者 赵鑫 杨棉之 曹迅 《科技进步与对策》 北大核心 2023年第7期23-33,共11页
基于外部性理论与吸收能力理论,利用2013—2021年中国制造业民营上市公司绿色专利数据,构建有调节的中介效应模型,探讨国有股权参与、吸收能力对民营企业绿色技术创新的影响。结果发现,国有股权参与显著促进民营企业绿色技术创新,国有... 基于外部性理论与吸收能力理论,利用2013—2021年中国制造业民营上市公司绿色专利数据,构建有调节的中介效应模型,探讨国有股权参与、吸收能力对民营企业绿色技术创新的影响。结果发现,国有股权参与显著促进民营企业绿色技术创新,国有股权持股比例越高,绿色技术创新水平越高;吸收能力在国有股权参与与民营企业绿色技术创新间发挥部分中介效应,同时分析师跟踪是有效的调节变量,国有股权参与与分析师跟踪的交互效应正向调节上述中介关系。分层类检验结果表明,当企业具有中央国有股权参与、属于高污染行业,以及所处政策环境不确定性较高时,国有股权参与更有利于促进民营企业绿色技术创新水平提升。 展开更多
关键词 混合所有制改革 国有股权参与 绿色技术创新 吸收能力 分析师跟踪
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The CPC’s Century-Long Exploration of a Socialist Ownership System
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作者 Fang Fuqian 《China Economist》 2022年第3期43-61,共19页
Throughout its century-long history,the Communist Party of China(CPC)has been striving to explore and implement an ownership system of the means of production.Upon its founding in 1921,the Party envisioned to create a... Throughout its century-long history,the Communist Party of China(CPC)has been striving to explore and implement an ownership system of the means of production.Upon its founding in 1921,the Party envisioned to create a sole ownership system after the victory of the National Revolution.In war times,land issues dominated the agenda of the Party’s work on the ownership structure since most of its bases and liberated areas were in the countryside.After the founding of the People’s Republic of China in 1949,China established a basic socialist economic system through“one industrialization and three transformations,”i.e.socialist industrialization and the transformations of agriculture,artisanal production,and capitalist industry and commerce.This nascent socialist economic system was characterized by the sole public ownership of the means of production and a highly centralized planned economy.Since the reform and opening up in 1978,the Party took bold steps to explore and reform the socialist ownership system under the principle to keep public ownership as the mainstay and allow diverse forms of ownership to develop side by side.In the new era,the Party has redefined China’s basic socialist economic system by creating a mixed ownership structure at two levels with public ownership as the mainstay.China’s increasing economic vitality and dynamism have witnessed the exploration and growth of this mixed ownership system. 展开更多
关键词 ownership structure sole public ownership mixed ownership EXPLORATION IMPLEMENTATION
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