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.
Definition - What does Secure Server mean? A secure server is a Web server that guarantees secure online transactions. Secure servers use the Secure Sockets Layer (SSL) protocol for data encryption and decryption to protect data from unauthorized interception. Secure servers are used by online retailers and any organization with a Web presence.