Digital educational resources have become essential elements of modern educational public services.China’s national program on new educational infrastructure construction has proposed to take new infrastructure const...Digital educational resources have become essential elements of modern educational public services.China’s national program on new educational infrastructure construction has proposed to take new infrastructure construction of digital educational resources as one of the critical tasks.This paper aims to provide a theoretical basis for advancing the reform and development of digital educational resources in the new era.It classifies the current development and realistic challenges of China’s digital educational resources,and summaries and interprets the directions of the three construction projects of new type resources and tools,the resource supply system,and the resource supervisory system.It depicts the prospect of digital educational resource construction in the intelligent era in the combination of the strategic layout of the policies on new educational infrastructure construction.It also discusses such key technologies supporting new infrastructure construction of digital educational resources as multimodal learning analytics,disciplinary knowledge graphs,machine learning,and blockchain.It finally proposes a specific development path for new infrastructure construction of digital educational resources.展开更多
Combined with third generation synchrotron radiation light sources, X-ray photoelectron spectroscopy (XPS) with higher energy resolution, brilliance, enhanced surface sensitivity and photoemission cross section in rea...Combined with third generation synchrotron radiation light sources, X-ray photoelectron spectroscopy (XPS) with higher energy resolution, brilliance, enhanced surface sensitivity and photoemission cross section in real time found extensive applications in solid-gas interface chemistry. This paper reports the calculation of the core-level binding energy shifts (CLS) using the first-principles density functional theory. The interplay between the CLS calculations and XPS measurements to uncover the structures, adsorption sites and chemical reactions in complex surface chemical processes are highlight. Its application on clean low index (111) and vicinal transition metal surfaces, molecular adsorption in terms of sites and configuration, and reaction kinetics are domonstrated.展开更多
基金funded by the Ministry of Education Humanities and Social Science Research 2018 Project“Research on the Supply Models of Digital Educational Resources and Performance Assessment”(No.18YJA880036)the Key Project under the National Social Science Fund of China in 2018“Research on Basic Education Equality Driven by Informatization in the New Era”(No.18ZDA334).
文摘Digital educational resources have become essential elements of modern educational public services.China’s national program on new educational infrastructure construction has proposed to take new infrastructure construction of digital educational resources as one of the critical tasks.This paper aims to provide a theoretical basis for advancing the reform and development of digital educational resources in the new era.It classifies the current development and realistic challenges of China’s digital educational resources,and summaries and interprets the directions of the three construction projects of new type resources and tools,the resource supply system,and the resource supervisory system.It depicts the prospect of digital educational resource construction in the intelligent era in the combination of the strategic layout of the policies on new educational infrastructure construction.It also discusses such key technologies supporting new infrastructure construction of digital educational resources as multimodal learning analytics,disciplinary knowledge graphs,machine learning,and blockchain.It finally proposes a specific development path for new infrastructure construction of digital educational resources.
基金the financial support from the National Natural Sci-ence Foundation of China (Grant Nos. 20733008, 20873142)the National Basic Research Program of China (2007CB815205)
文摘Combined with third generation synchrotron radiation light sources, X-ray photoelectron spectroscopy (XPS) with higher energy resolution, brilliance, enhanced surface sensitivity and photoemission cross section in real time found extensive applications in solid-gas interface chemistry. This paper reports the calculation of the core-level binding energy shifts (CLS) using the first-principles density functional theory. The interplay between the CLS calculations and XPS measurements to uncover the structures, adsorption sites and chemical reactions in complex surface chemical processes are highlight. Its application on clean low index (111) and vicinal transition metal surfaces, molecular adsorption in terms of sites and configuration, and reaction kinetics are domonstrated.
