| Summary: | 博士 === 大同大學 === 資訊工程學系(所) === 107 === Although the effect of information technology (IT) adoption on competitive advantage is well documented, the mechanism that explains this effect and the magnitude of the effect that is contingent on other variables remain unclear. The motivation of this study is to quantify the reciprocal causation between IT adoption and service innovation, determine the respective roles of service innovation and IT adoption in competitive advantage and to estimate the moderating effects of environmental factors. To confirm the causal relationship of constructs and develop reliable and valid instruments, this study adopted the decision-making trial and evaluation laboratory technique to analyze and resolve the problems related to complex and interrelated groups.
There are two tap water supply systems in Taiwan, namely the Taiwan Water Corporation (TWC) and Taipei Water Department (TWD). Based on information revealed by the official websites of the two organizations, the latter’s metrics are better than the former; therefore, TWD should be used as a benchmark organization.
Data analysis reveals a bidirectional relationship between IT adoption and service innovation. In contrast to the findings of most related studies, service innovation has a positive effect on competitive advantage; however, IT adoption has a negative effect on competitive advantage. A high level of environmental factors is more likely to increase the positive effect of service innovation on competitive advantage, but it is also more likely to decrease the negative effect of IT adoption on competitive advantage.
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