Provenance evolution analysis shows that an arc belt in the Chengjisi-Taerbahatai fold belt uplifted and provided the Wutubulake sub-formation with low maturity detritus during the Early Devonian, which followed by the detritus from the lithic recycled orogen provenance that composed the Hujiersite and Hongguleleng formations during the Middle and Late Devonian.

Utilizing the historical data and the Landsat TM data,the paper studies the dynamic change of the wetland since 1949,and studies the types of the coastal wetland between the Douhe and Luanhe rivers from 1987 to 2004.

Research on the dynamic evolution of London's maritime center and UK shipping industry

According to a developed model for transient behaviors of tungsten-inert- gas arc weldpool,the dynamic evolution process of surface depression of full-penetrated weldpool in quasi-steady state after changing welding process parameters is numerically simulated,and the basic data obtained can be used in designing weld penetration control system.

As the traditional algorithm for the dynamic evolution of Hybrid Petri Nets(HPN) may not be used for many HPN models, a new method to construct evolution graph for HPN was proposed.

Through selecting patches size , fractal dimension, dominance, diversity index, evenness index, etc,the dynamic development of land sight space pattern of Nihegou Valley in the loessplateau gully area is analysized.