R&D investment is enterprises¡¯ strategy based on the market demand on innovative products and its production capacity for them. Enlarging market demand would spur the enterprises¡¯ R&D input and the enhancement of technology state in production ability could have a complex effect on less...

In this study, on the basis of 3,200 km shallow stratigraphic section and side-scan sonar data of the coastal area of the Yellow River Delta, we delineated and interpreted a total of seven types of typical hazardous geologies, including the hazardous geology in the shallow strata (buried...

China’s speedy industrialization has undertaken mostly a crude path with extensive energy consumption and severe environmental damage. In face of the challenge of global warming and resource restrictions, it calls for urgent green transformation for the sustainable development of China’s...

By using HS classification, the author has divided total agricultural products into 24 categories. The paper calculated the G-L intra-industry trade index, Br¨¹lhart marginal intra-industry trade index, and Thom & McDowell marginal industry trade index for each type of agricultural products...

In this paper, we propose a macro model with consideration of multi static bottlenecks to study the impacts of multi static bottlenecks on traffic flow. The numerical results show that the influences are related to the number of static bottlenecks, the distance between two adjacent static...