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, regional, and national scale. In order to effect and sustain a positive change, innovation and knowledge networks need to be …
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handset manufacturers in U.S.A, Europe, and Japan. We choose the "event study" methodology to evaluate the impact of iPhone … carriers and the handset manufactures in U.S.A, Europe and Japan?" The results show that the impacts of iPhone present … results of financial profits show that almost of all telecommunications carriers in U.S.A and Japan grow their profits after …
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