The paper programs and calculates the time-space network, and utilizes the principle of variational inequality problem, the principle of the mathematics programming, probability, traffic engineering to analyses the algorithm of the dynamic transportation network model and establish a VIP model for the dynamic traffic assignment based on the research of the production of the ITS especial in DTA at home and abroad. The paper also designs a new algorithm for the model: nested diagonalization method.
With Fourier Transformation, an inverse problem of the partial difference equation in time-space domain is converted into one in frequence-space domain, and the dimension of difference scheme decreases.
Wavelet packet is a time-frequency analytical method,and can be better of dividing the seismic data in detail than wavelet transform. It can describe the distribution of effectual wave and noise wave in time-space field at same frequency,comparing with traditional Fourier transform.
Analysis of spatial-temporal correspondence showed that the high seroprevalence of PR for Pearl River Delta appeared in 2002 and 2003,for the north in 2001.In 2002 and 2003,the low seroprevalence of PR were observed in the east.
Temporal-spatial variation and the influence factors of precipitation in Sichuan Province, China
Understanding the temporal-spatial variation and the corresponding factors of precipitation has become the object of hydrology and environmentology.
Based on the annual precipitation data, we analyzed the spatial distribution of precipitation in Sichuan Province in China as well as the temporal-spatial variation and the corresponding influence factors involved.
Characteristics of the temporal-spatial variation in atmospheric ozonosphere over the northern hemisphere during the period of 1
Recent advances in studies of the structural characteristics and temporal-spatial variations of the East Asian monsoon (EAM) system and the impact of this system on severe climate disasters in China are reviewed.