Brainstem death is a clinical syndrome defined by the absence of reflexes with pathways through the brainstemâthe stalk of the brain, which connects the spinal cord to the mid-brain, cerebellum and cerebral hemispheresâin a deeply comatose, ventilator-dependent patient. Identification of this state carries a very grave prognosis for survival; cessation of heartbeat often occurs within a few days although it may continue for weeks or even months if intensive support is maintained. In ...
Collecting the Traffic Demand Matrices. The core traffic demand matrix is the matrix of ingress-to-egress traffic demands across the core network. Traffic matrices can be measured or estimated to different levels of aggregation: by IP prefix, by router, by point of presence (POP), or by autonomous system (AS).
FirstNet broadly defines its LTE network in distinct layers: Core Network, Transport Backhaul, Radio Access Network (RAN) and Public Safety Devices. Core Network FirstNet is responsible for building the enhanced packet core network, a key component for ensuring that users have a single interoperable platform nationwide. The core network has six primary functions: it switches data, processes and reformats information, stores and maintains data and keeps it secure. Applications and services and operational and business support systems also reside in the core network.