本篇論文將國際技術擴散之管道分為「貿易」與「非貿易」兩個層面，旨於估計美國公民近年來商務旅行至外國對於該國高質量創新的影響、探討美國技術擴散至其他國家之管道與美國技術對他國之影響程度。使用創新質量較高的三邊專利申請數作為創新的衡量依據，並分別以商務旅行作為非貿易技術擴散管道、直接外人投資與不同資料來源的中間財貿易作為貿易相關的技術擴散管道，綜合衡量在勞動力流動日趨頻繁的現今，美國作為技術擴散國、對於其他技術接收國的主要技術擴散管道；此外，亦試圖探討近年全球影響力排名之議題。結果指出，隨著跨境移動之壁壘逐漸消弭，商務旅行是美國國際技術擴散之管道，意指即便在網路無遠弗屆的現代，人與人之間面對面直接進行交談仍具重要性；另一方面，在資訊爆炸的現代，技術接收國本身的技術吸收能力亦是影響該國之創新的關鍵。

This thesis aims to investigate the channels of outward international technology diffusion using the United States as an example. We divide the channels of technology diffusion into “trade-related” and “non-trade related”. Outbound business travel is used as a proxy for non-trade related channel, and outward FDI and trade in intermediate inputs are proxies for trade-related channels. We use triadic patent applications as a measure of innovation. This thesis not only evaluates the relative importance of the channels of technology diffusion but also attempts to discuss the issue of global power ranking. The results suggest that even with rapid development of the Internet, face-to-face communication via outbound business travel is still important for technology diffusion. In addition to technology diffusion, our findings suggest that the absorptive ability of technology-receiving countries is also significant in an era of information explosion.

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