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. 2015 Jan 22;10(1):e0116329. doi: 10.1371/journal.pone.0116329

Figure 3. Three-Tier and Functional System Architecture.

Figure 3

The system architecture of IQM can be illustrated as classical three-tier model. The functional architecture is composed of different modules and spans vertically over one or more tiers. The “IQM-APP” module ties together all functional components and represents the entire application.