[Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things

<div>New teachers’ evaluation of the certification procedures in the training (x) online certification; (y) material and on-site certification; (p) real-name certification; (q) anonymous review.</div>

Security and Communication Networks

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Figure 8

Figure 8: [Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things 

Figure 8 | [Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things 