Drupal-Bibcite0<style face="normal" font="default" size="100%">Allocation Efficiency Measurement and Spatio-Temporal Differences Analysis of Digital Infrastructure: The Case of China’s Shandong Province</style><style face="normal" font="default" size="100%">Allocation Efficiency Measurement and Spatio-Temporal Differences Analysis of Digital Infrastructure: The Case of China’s Shandong Province</style>