2. Literature research
3. Research Methods.
4. Result
2. Literature research
1) How have topics of three major public broadcasting stations changed for four weeks?
2) How has the weight of reports about Cheonan ship accident changed for four weeks?
Though we couldn't find a data related to the changes of news topics, we thought that news topics would be changed depending on a process of solving the problem. We could expect the aspect of changes, like 'Details and cause of accident' -> 'Process of rescue' -> Victims' humanistic stories. -> Ends of settlement and government's statements' . And we also expected that the weight of Cheonan ship news is the biggest at the start, as time goes by, it would be reduced.
3) Depending on gender of anchors, how have the number of Cheonan ship accident changed?
According to a research, 「In the news which is run off by both man and woman anchors, there are some differences between roles of anchors, depending on gender. Usually men report important news especially political news. On the other hand, women report common news.」The news which report Cheonan ship accident belong to hard news, so we thought that this tendency would be obvious.
4) About North Korea, how are the points of view of the three major public broadcasting stations' news?
In '전쟁보도와 미디어 담론‘ of professor Baek, he said the effect of pictures news

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