5G needs to be viewed as a request for network upgrade driven by demands for innovative services, not only by demands for enhanced mobile networks per se. The R&D plan of the Korean government has been discordant with the vision of 5G, maintaining the tradition of sector- or issue-based R&D...

The profit to a standard short-term return reversal strategy can be decomposed analytically into four components: 1) across-industry return momentum, 2) withinindustry variation in expected returns, 3) under-reaction to within-industry cash flow news, and 4) a residual. Only the residual...