This paper investigates the relationship between China\'s fuel ethanol promotion plan and food security based on the i......

Transportation has played an important supporting role in the development of the national economy.Road transport is the ......

After analyzing the accident causation theories and the accident causes sequence of the number of mining occupational de......

With the maturity of finance and econometrics, many researches of the relatioanship between financial development and ec......

Financialization of carbon futures market and global economy have made the fluctuation of carbon emission allowance pric......

人群行为识别是计算机视觉领域的重要研究课题,针对小规模松散人群兼具微观层面与宏观层面行为特征这一特点,提出了一种基于因果网......

本文利用协整理论、格兰杰因果检验对广州地区民航运输发展与经济增长之间的关系进行相关性分析,并通过弹性系数分析了广州民航运......

气候变化和人的活动是到多山的河里的沉积变化的主要影响因素。基于超过 40 年“记录，在在 Yuanjiang 河(上面的红河) 的更低的活动......

In arid areas, ecological degradation aroused by over-exploitation of fresh water, expansion of artificial oasis and shr......