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物联网的发展已经成为我国实现经济转型的有力支撑,但其发展过程中呈现的波动性问题仍亟需深入研究.从效率的角度,对我国19家物联网公司的发展状况进行了研究.首先,运用DEA模型测算了19家公司2013-2015年的技术效率、纯技术效率、规模效率以及各公司的规模收益状况.计算结果表明物联网上市公司的效率在整体上呈现上升趋势,只有同方股份在三年内规模收益状况为递减.其次,运用DEA-Malmquist测算了19家公司的技术效率变化指数、技术进步指数、纯技术效率变化指数、规模效率变化指数和全要素生产率变化指数.结果表明,技术进步指数低是制约这19家公司生产力发展的关键问题.最后,运用Tobit regression分析了11项财务指标对技术效率、纯技术效率以及规模效率影响的显著性,得出财务指标对规模效率存在显著影响.基于效率和影响因素分析的实际,为物联网上市公司的发展提供合理的建议,推动我国物联网产业实现良性有序发展.
The development of the Internet of Things has become a strong support for China’s economic restructuring, but the volatility problems in its development still need further study. From the efficiency point of view, the development of 19 Internet of Things (IoT) companies in China is studied. , The DEA model was used to calculate the technical efficiency, pure technical efficiency, economies of scale, and scale returns of 19 companies from 2013 to 2015. The results show that the overall efficiency of IoT listed companies is on an upward trend, with only shares of Tongfang Scale returns in three years are decreasing.Secondly, DEA-Malmquist is used to measure the technical efficiency index, technical progress index, pure technical efficiency index, scale efficiency index and total factor productivity index of 19 companies.The results show that, The low index of technological progress is the key issue that restricts the productivity growth of these 19 companies.Finally, Tobit regression is used to analyze the significance of 11 financial indicators on technical efficiency, pure technical efficiency and scale efficiency, Significant impact. Based on the actual analysis of efficiency and impact factors, for the IoT The development of city companies to provide reasonable advice to promote China’s Internet of Things industry to achieve benign and orderly development.