Transportation

On the basis of combing the traditional policy effect evaluation methods such as fixed effect model, instrumental variable, difference in differences, regression discontinuity design and synthetic control method, this paper investigates policy evaluation methods under multidimensional spillover effects and emphasizes the unique advantages of spatial network models in addressing the challenges of multidimensional spillover effects.

Innovation is the primary driving force behind development. In the Internet era, innovation knowledge spillover is faced with two paradoxes: One is the increasing frequency of ‘online communication’ and the decreasing opportunity of ‘offline communication’, and the other is the insufficient innovation effect of ‘codified knowledge’ and the limited communication channel of ’tacit knowledge’.

By using CiteSpace V to visualize the knowledge map of the “high-speed rail impact on regional development” in the CSSCT from 1998 to 2019, the theoretical research hotspots, trends and latest progress in China are revealed…

Whether the opening of high-speed rail of the two different grades of the national rail and the local rail will have an impact on the development of the regional economy and what are the impact differences? This is an academic and practical issue worth exploring…