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
It is common in industrial construction projects for data to be collected and discarded without being analyzed to extract useful knowledge. A proposed integrated methodology based on a five-step Knowledge Discovery in...It is common in industrial construction projects for data to be collected and discarded without being analyzed to extract useful knowledge. A proposed integrated methodology based on a five-step Knowledge Discovery in Data (KDD) model was developed to address this issue. The framework transfers existing multidimensional historical data from completed projects into useful knowledge for future projects. The model starts by understanding the problem domain, industrial construction projects. The second step is analyzing the problem data and its multiple dimensions. The target dataset is the labour resources data generated while managing industrial construction projects. The next step is developing the data collection model and prototype data ware-house. The data warehouse stores collected data in a ready-for-mining format and produces dynamic On Line Analytical Processing (OLAP) reports and graphs. Data was collected from a large western-Canadian structural steel fabricator to prove the applicability of the developed methodology. The proposed framework was applied to three different case studies to validate the applicability of the developed framework to real projects data.展开更多
随着中国经济的高速发展,城市化建设进程加快,随之带来的“渣土围城”问题引起了国内学者的广泛关注。为探究盾构渣土的研究现状及发展趋势,本文利用Cite space 6.1.3软件对1992-2022年间发表在中国知网上的1619篇文章进行可视化分析,...随着中国经济的高速发展,城市化建设进程加快,随之带来的“渣土围城”问题引起了国内学者的广泛关注。为探究盾构渣土的研究现状及发展趋势,本文利用Cite space 6.1.3软件对1992-2022年间发表在中国知网上的1619篇文章进行可视化分析,从发文量趋势、学科分布、关键词共现、作者合作网络等方面进行具体阐述。研究结果表明,盾构渣土研究历经起步期、平稳增长期和快速增长期3个阶段,于2016年之后,成为工程领域的一大研究热点。盾构渣土的研究方向从最初的盾构机施工技术,发展到后来的渣土固化、混凝土拌合料、烧制砖等建材的研发。目前研究最热的是盾构渣土用于水污染治理陶粒、种植土制备等环境污染治理领域,盾构渣土的资源化回收利用技术是未来的研究重点方向。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.
文摘It is common in industrial construction projects for data to be collected and discarded without being analyzed to extract useful knowledge. A proposed integrated methodology based on a five-step Knowledge Discovery in Data (KDD) model was developed to address this issue. The framework transfers existing multidimensional historical data from completed projects into useful knowledge for future projects. The model starts by understanding the problem domain, industrial construction projects. The second step is analyzing the problem data and its multiple dimensions. The target dataset is the labour resources data generated while managing industrial construction projects. The next step is developing the data collection model and prototype data ware-house. The data warehouse stores collected data in a ready-for-mining format and produces dynamic On Line Analytical Processing (OLAP) reports and graphs. Data was collected from a large western-Canadian structural steel fabricator to prove the applicability of the developed methodology. The proposed framework was applied to three different case studies to validate the applicability of the developed framework to real projects data.
文摘随着中国经济的高速发展,城市化建设进程加快,随之带来的“渣土围城”问题引起了国内学者的广泛关注。为探究盾构渣土的研究现状及发展趋势,本文利用Cite space 6.1.3软件对1992-2022年间发表在中国知网上的1619篇文章进行可视化分析,从发文量趋势、学科分布、关键词共现、作者合作网络等方面进行具体阐述。研究结果表明,盾构渣土研究历经起步期、平稳增长期和快速增长期3个阶段,于2016年之后,成为工程领域的一大研究热点。盾构渣土的研究方向从最初的盾构机施工技术,发展到后来的渣土固化、混凝土拌合料、烧制砖等建材的研发。目前研究最热的是盾构渣土用于水污染治理陶粒、种植土制备等环境污染治理领域,盾构渣土的资源化回收利用技术是未来的研究重点方向。
