元宇宙是在理论与实践的双重探索中出现的重要课题。基于中国知网(CNKI)和美国Web of Science数据库,对国内外元宇宙研究进行系统回溯,使用可视化文献分析工具CiteSpace,对元宇宙研究情况分别进行作者共现分析、关键词共现分析,并绘制...元宇宙是在理论与实践的双重探索中出现的重要课题。基于中国知网(CNKI)和美国Web of Science数据库,对国内外元宇宙研究进行系统回溯,使用可视化文献分析工具CiteSpace,对元宇宙研究情况分别进行作者共现分析、关键词共现分析,并绘制相关知识图谱,对高被引论文进行分析。从元宇宙研究的发文作者和机构来看,合作研究网络仍有待进一步形成和发展,元宇宙研究呈现出多元化和交叉化的特点,具有动态演进的总体趋势。元宇宙研究的学科体系、学术体系、话语体系仍有待建立。展开更多
The applications of geospatial technologies and positioning data embrace every sphere of modern-day science and industry. With technological advancement, the demands for highly accurate positioning services in real-ti...The applications of geospatial technologies and positioning data embrace every sphere of modern-day science and industry. With technological advancement, the demands for highly accurate positioning services in real-time led to the development of the Global Navigation Satellite System—Real-Time Network (GNSS-RTN). While there is numerous published information on the technical aspects of the GNSS-RTN technology, information on the best practices or guidelines in building, operating, and managing the GNSS-RTN networks is lacking in practice. To better understand the current practice in establishing and operating the GNSS-RTN systems, an online questionnaire survey was sent to the GNSS-RTN system owners/operators across the U.S. Additionally, a thorough review of available literature on business models and interviews with representatives of two major manufacturers/vendors of GNSS-RTN products and services were conducted. Study results revealed a great deal of inconsistency in current practices among states in the way the GNSS-RTN systems are built, operated, and managed. Aspects of the diversity in state practices involved the business models for the GNSS-RTN systems besides the technical attributes of the network and system products. The information gathered in this study is important in helping state agencies make informed decisions as they build, expand or manage their own GNSS-RTN systems.展开更多
文摘元宇宙是在理论与实践的双重探索中出现的重要课题。基于中国知网(CNKI)和美国Web of Science数据库,对国内外元宇宙研究进行系统回溯,使用可视化文献分析工具CiteSpace,对元宇宙研究情况分别进行作者共现分析、关键词共现分析,并绘制相关知识图谱,对高被引论文进行分析。从元宇宙研究的发文作者和机构来看,合作研究网络仍有待进一步形成和发展,元宇宙研究呈现出多元化和交叉化的特点,具有动态演进的总体趋势。元宇宙研究的学科体系、学术体系、话语体系仍有待建立。
文摘The applications of geospatial technologies and positioning data embrace every sphere of modern-day science and industry. With technological advancement, the demands for highly accurate positioning services in real-time led to the development of the Global Navigation Satellite System—Real-Time Network (GNSS-RTN). While there is numerous published information on the technical aspects of the GNSS-RTN technology, information on the best practices or guidelines in building, operating, and managing the GNSS-RTN networks is lacking in practice. To better understand the current practice in establishing and operating the GNSS-RTN systems, an online questionnaire survey was sent to the GNSS-RTN system owners/operators across the U.S. Additionally, a thorough review of available literature on business models and interviews with representatives of two major manufacturers/vendors of GNSS-RTN products and services were conducted. Study results revealed a great deal of inconsistency in current practices among states in the way the GNSS-RTN systems are built, operated, and managed. Aspects of the diversity in state practices involved the business models for the GNSS-RTN systems besides the technical attributes of the network and system products. The information gathered in this study is important in helping state agencies make informed decisions as they build, expand or manage their own GNSS-RTN systems.
