本文基于我国中小板和创业板960家上市企业2015～2019年年报数据，采用文本挖掘法构建度量企业数字化程度的指标，通过面板固定效应模型和多重中介效应模型就中小企业实施数字化变革对企业绩效的影响及其内在路径进行实证检验。研究发现：中小企业实施数字化变革可以通过提高运营效率、降低经营成本、提高创新水平，进而提升企业绩效；国有化程度和资本密集度的不同，会为中小企业实施数字化变革影响企业绩效的程度带来差异。本文试图揭开中小企业通过数字化变革创造多维价值进而提升企业绩效的“过程黑箱”，为鼓励中小企业积极拥抱数字化浪潮，实现自身高质量可持续发展提供理论与实践价值。

This
paper applies the entropy-weighting TOPSIS method and Theil index to take a com
prehensive evaluation and difference measurement of regional Middle and Large si
zed Enterprise(MLE)technological innovation capability in China from 2005 to 200
9.The results show that the development difference of regional MLE technological
innovation capability is great,and the polarization phenomenon is serious.For t
he regional internal differences which are concerned,western is largest,eastern
followed and central is the minimum.The difference among the three regions is th
e most outstanding,which makes the largest contribution to the regional overall
differences.

To b
etter achieve the objectives of the twelve five-year-plan and to meet the supply
and demand of the future logistics talents of Shanghai,this paper uses the comb
ination forecast model of grey fore cast model and time series prediction model
to predict the demand of the logistics talents of Shanghai based on the data of
tertiary industry employees during 1970～2009.The effective supply has been fore
casted after the study of logistics-related professional colleges of Shanghai.Co
mparing the demand and supply situation of the logistics talentes during the twe
lve five-year-plan,this paper found the phenomenon that the demand of the logist
ics talents of Shanghai would exceed the supply of it,in addition,corresponding
measures have been proposed from the government,universities,and enterprises asp
ects to ease the demand and supply gap during the twelve five-year-plan.

Deve
lopment of low-carbon economy has become an international trend,and a series of
response measures have been adopted actively in Japan which can be described as
one of the first low-carbon economy pioneers.This paper combines cost-benefit an
alysis of law and economics interpretation of Japans low-carbon economy policy
system inorder to make recommendations for Chinas low-carbon economy.

On t
he purpose of doing research on the effect of FDI on economy in different consum
e level,this paper establishes the threshold model to confirm the existence of o
penness threshold effects by using China provincial panel data from year 2000 to
2009.The result showed that double threshold effect of FDI on economic growth e
xists,and FDI boosts the economy most significantly when the opening degree betw
een the first and second threshold.Most provinces in eastern of China are in low
er consumer level.In order to improve the positive impression of FDI to economy
increase,their economic growth mode needs to change from mainly depending on inv
estment to consuming.While the central and western provinces are still based on
consuming,they should increase the input of FDI to motivate local economy.