The main concept of the expectation confirmation theory is that the consumer's pre-purchase or pre-use expectations are compared with the perceived performance actually used, and when the perceived performance is higher than expected, the feeling of confirmation is generated, and vice versa, negative non-confirmation occurs. The higher the confirmation, the higher the user's satisfaction, and the higher the willingness to buy. Ayanso et al. (2015) with a desired confirmation to understand the physician's continued intent to electronic medical records to find that confirmation will affect satisfaction, but satisfaction does not affect intent. In the use of virtual learning environments, Pereira et al. (2015) breaks down the recognition in the expectation recognition theory as availability, quality and value recognition, and finds that only value recognition affects the user's satisfaction and, in turn, the intent to continue use. In Nairobi, Okenyi et al. (2019) was able to meet user expectations for the satisfaction of two private university (CUEA and USIU) students studying the enterprise resource system finance module. Wang et al. (2019) found that the actual use of WeChat Health products than expected affects the willingness to buy in consumption. Continuity Rajput and Verma (2019) in Indian social networking sites revises the expectation confirmation theory, adding the customary influence of interference variables on the intention of continuous use in the flow of the mind and perception. Huang (2019) checks that students' continued use of desktop computers finds confirmation that confirmation affects their satisfaction, and thus the continued use of intent. Zhang and Cai (2019) successfully used the expected confirmation model application Tencent video charging service re-purchase intention of the study, but the basic function of mobile map service is free, this study is not suitable for this study. The shortcomings of the above research This study attempts to add expectations to determine the theoretical application of the topic of mobile map service to construct a new and complete model of science and technology mobile map service.
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