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Excavate and compare the technical themes of IC manufacturing industry chain of domestic and foreign patents, so as to objectively and comprehensively reveal the technical themes and differences of IC manufacturing in domestic and foreign, hoping to provide valuable reference for domestic IC manufacturing. Based on the integrated circuit manufacturing process, established the patent retrieval formula of each process and retrieved the patent data. Through TF-IDF algorithm and LDA model to mine the technical topics of domestic and foreign patents on the basis of self-built thesaurus and stop-words list, and summarized mining results. Through the analysis of results, it is found that the technical topics of integrated circuit manufacturing in domestic and foreign have similarities and differences, and the upper concept is strong, but the technical topics are more detailed of foreign patents.

Under the background of the strategy of “strong transportation country”, the feasibility study of highway network construction is a hot topic in academic fields such as highway line selection. It is also an important means to promote development of eco-sensitive regions such as Sanjiangyuan in Qinghai-Tibet plateau. We selected 17 indexes of construction necessity and 9 indexes of ecological friendliness to evaluate the feasibility of highway network construction. The indexes were weighted by the analytic hierarchy process (AHP) and expert scoring method. Furthermore, we used comprehensive factor evaluation model to quantify the construction necessity and ecological friendliness of planning highways in Sanjiangyuan. Finally, we used the magic cube model to calculate the score of construction feasibility. The result shows the number of planning highways with high, relatively-high, medium, relatively-low and low construction feasibility is 16, 11, 11, 11 and 1, respectively. The feasibility of planning highway construction in the eastern and western region of Sanjiangyuan is similar generally, which don’t have big interregional difference. Results of this study can provide technical support and theoretical basis for regional highway network construction and traffic route planning in underdeveloped areas in the West China.