The gap between relatively developed and less developed areas in China has become more evident with economic development. However, only a few investigations have compared factors of transportation CO 2 emissions in relatively developed and less developed areas at the micro level. Factors differ for transportation CO 2 emissions between areas. To assess their differences, we select Guangdong and Guangxi provinces in China as examples. This study conducted a decoupling research between transportation CO 2 emissions and economic output based on the Logarithmic Mean Divisia Index (LMDI) decomposition and Tapio decoupling model during 2000-2017. The LMDI model successfully quantified the effects of six factors, focusing on technology-related factors, i.e., research and development (R&D) efficiency and per capita R&D expenditure. Different factors of transportation CO 2 emissions in the two provinces were then compared. Results were as follows: (1) Four decoupling states appeared in the two areas. (2) Per capita R&D expenditure was the primary contributor to increased CO 2 emissions, followed by population size. Relative to those in Guangdong, the two effects were weaker in Guangxi. (3) Energy intensity was the major inhibitor of CO 2 emissions in Guangdong, followed by R&D efficiency. The two effects can reduce CO 2 emissions in Guangxi, although the inhibitory effects were relatively small. (4) Freight transportation intensity in Guangdong increased CO 2 emissions, whereas it decreased CO 2 emissions in Guangxi due to the extremely weak inhibitory effect. Finally, the study provides valuable suggestions for the development of low-carbon transportation in different areas.

Starting from semantization of Internet documents, aiming the issue of Internet address' ergod whose objective is converting HTML documents of the original version into transitional XHTML documents and into RDF documents of direction to xml, authors have done the mathematical description and verification to cluster of IP address and computer directory / file tree based on fractal theory. With the formation's method of self-similar system, deduced a ergodic way of Internet address, designed basic iteration piece and a network address ergodic algorithm which begin with integrating of iterative algorithm and recursive algorithm. At the same time, completed demonstration of the algorithm, and analyzed the entire course of the study, have given some parameter adjustment ways to meet different requirements.