The catchment population is, at any given time, the totality of those in the âwere -wouldâ state of: were the. illness now to occur, it would be âcaughtâ by that case identification scheme [Source: Miettinen OS, 2007] Study base , a. series of person-.
A tier 1 network is an Internet Protocol (IP) network that participates in the Internet solely via settlement-free interconnection, also known as settlement-free peering.y the strict definition of peering and the strict definition of a tier 1 network, a tier 1 network only peers with other tier 1 networks and has no transit routes going anywhere.
Another example of a one-tier architecture is a file server architecture. In this scenario, a workgroup database is stored in a shared location on a single machine. Workgroup members use a software package such as Microsoft Access to load the data and then process it on their local machine.his is an example of a one-tier database architecture. The program (Microsoft Access) runs on the user's local machine, and references a file that is stored on that machine's hard drive, thus using a single physical resource to access and process information.