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@article{Bai2020,

title = {Visualizing research trends and research theme evolution in E‐learning field: 1999–2018},

author = {Yang Bai and Hongxiu Li and Yong Liu},

url = {https://link.springer.com/article/10.1007/s11192-020-03760-7},

doi = {https://doi.org/10.1007/s11192-020-03760-7},

year  = {2020},

date = {2020-11-19},

journal = {Scientometrics},

abstract = {This paper aims to provide a comprehensive understanding of the evolution of major research themes and trends in e-learning research. A co-word analysis is applied for the analysis of the 21,656 keywords collected from 7214 articles published in 10 journals in the field of e-learning from the years 1999 to 2018. Specifically, a cluster analysis, social network analysis, strategic diagram, and graph theory were applied in the analysis for two time periods: 1999–2008 and 2009–2018. The study detects the bridging, popular, and core topics in e-learning research for the two periods. The research results indicate that e-learning research has undergone a health evolution over the past two decades. There is a temporal continuity of e-learning research because some research topics have kept their continuity over the studied 20 years. Meanwhile, the research traditions in the e-learning field are also continuously evolving with the development of new technologies. The results also offer useful hints on the future direction of how the field may evolve.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Wei2020,

title = {Analyzing the topic distribution and evolution of foreign relations from parliamentary debates: A framework and case study},

author = {Wei Lu and Jiamin Wang and Jiming Hu},

doi = {https://doi.org/10.1016/j.ipm.2019.102191},

year  = {2020},

date = {2020-05-01},

journal = {Information Processing & Management},

volume = {55},

number = {3},

abstract = {Parliamentary texts are records of discussions of domestic and international affairs, which reflect national attitudes and development trends in foreign relations. In this paper, a research framework is proposed to analyze foreign relations on the basis of parliamentary texts. First, topic words are extracted from parliamentary texts, and then a co-word network is constructed to represent the correlation structure of topic words. The basic statistics, calculation of network indicators, community detection, and visualization of network maps and evolution venation, as well as the depiction of a strategic diagram, elucidate deeper characteristics and connotations of foreign relations. This case study on UK-China relations during the period of 2011-2017 using British parliamentary texts reveals the following findings. Over this period, UK-China relations changed in terms of the topics involved, topics which are greatly unbalanced in distribution, but are quite concentrated. Five different directions exist, centering on Trade, Human rights, Nuclear, Steel, and Visa. The evolution of topics includes merging and differentiation. A minority of topics exhibit marked continuity, which constitute the main focal points discussed each year, such as Economy and Trade. Regarding development trends, themes related to trade and steel remain focal points in UK-China relations. Overall, the framework proposed in this paper is proven to be both effective and feasible, and its application through this case study can foster a deeper understanding of the status and development of UK-China relations.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{rule2015lexical,

title = {Lexical shifts, substantive changes, and continuity in State of the Union discourse, 1790-2014},

author = {Alix Rule and Jean-Philippe Cointet and Peter Bearman},

url = {https://doi.org/10.1073/pnas.1512221112},

year  = {2015},

date = {2015-01-01},

journal = {Proceedings of the National Academy of Sciences},

volume = {112},

number = {35},

pages = {10837-10844},

publisher = {National Acad Sciences},

abstract = {This study reveals that the entry into World War I in 1917 indexed the decisive transition to the modern period in American political consciousness, ushering in new objects of political discourse, a more rapid pace of change of those objects, and a fundamental reframing of the main tasks of governance. We develop a strategy for identifying meaningful categories in textual corpora that span long historic durées, where terms, concepts, and language use changes. Our approach is able to account for the fluidity of discursive categories over time, and to analyze their continuity by identifying the discursive stream as the object of interest.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}