出版社：International Council of Associations for Science Education (ICASE)
摘要：Over the last three decades, public understanding of science (PUS) has been one of the foremost research topicsin the Korean society where numerous social scientific conflicts have taken place. As a lead channel of risk communication, Twitter hasbeen studiedin experimental research designs or among target user groups, leaving the measurement of overall PUS still unknown. Hence, this study aimed to examine every messagecollected during the one-year research period by a Twitter backup system installed on an online server,regarding the tw o key words: nuclear power and nuclear power plants. The results indicate that 20% of the entire posts containedpromotional advertisements distributed by five stateinstitutes related to nuclear power. Excluding these advertisements, there were 397,827 messages posted by 87,966 users forming a skewed distribution in the cumulative chart—a sled-shape model. Top 5% of the entire users posted half of the entire messages, while top 0.2% users entitled as active speakers posted 10% of the entire messages. As only 11% messages among the active users heldbalanced attitudes, it is likely that most of messages posted by the supporting state institutes and the opposing individualswould gain less credibility than they were intended, according to the theory of bidirectional risk communication
关键词：public understanding of science; nuclear power; risk ;communication; social netw ork service; Twitter; big data
