Objective To evaluate whether changes in cardiovascular regulatory function induced by simulated microgravity can be detected by recurrence plot analysis(RPA) and recurrence quantification analysis(RQA)of blood pressure signals obtained from conscious rats.

The research indicated both dispersed points texture and line type texture appeared on recurrence plot for the transitional oil/water two phase flow pattern; however, only line type texture appeared on recurrence plot for the oil-in-water flow pattern.

By the recurrence plots and Kolmogorov entropy, this paper analyzes and compares their predictability in qualitative and qualitative aspects, and draws some useful conclusions.

Their determinism are investigated using the recurrence plots and RQA.

By constructing sub-IFS (iterated function system) of IFS with graph-directed structure, it is proved in this paper that the graph-directed arcs of Hausdorff dimension greater than 1 are Whitney sets; the result dones t need the transitivity condition on directed graph.

This paper addresses the Rewrite algorithm and an query rewriting algorithm that can handle recursive views.

This paper researches the query rewriting problem for XML recursive security view,and presents a query rewriting algorithm which based on XPath query and can handle recursive view.