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 T-U
Tension metrics
A set of objectives for individual team members to use to balance conflicting
roles and conflicting project and organizational objectives in order to create
shared responsibility in teams and between teams.
terminal emulation
Software running on an intelligent device, typically a PC or workstation, which
allows that device to function as an interactive terminal connected to a host
system. Examples of such emulation software includes IBM 3270 BSC or SNA, ICL
C03, or Digital VT100.
terminal I/O
A read from, or a write to, an on-line device such as a VDU or remote printer.
third-party supplier
An enterprise or group, external to the customer's enterprise, which provides
services and/or products to that customer's enterprise.
thrashing
A condition in a virtual storage system where an excessive proportion of CPU
time is spent moving data between main and auxiliary storage.
threat
An indication of an unwanted incident that could impinge on the system in some
way. Threats may be deliberate (e.g., willful damage) or accidental (e.g.,
operator error).
Total Cost of Ownership (TCO)
Calculated by including depreciation, maintenance, staff costs,
accommodation, and planned renewal.
tree structures
In data structures, a series of connected nodes without cycles. One node is
termed the "root" and is the starting point of all paths; other nodes
termed "leaves" terminate the paths.
unabsorbed overhead
Any indirect cost that cannot be apportioned to a specific customer.
Underpinning Contract
A contract with an external supplier covering delivery of services that support
the IT organization in their delivery of services.
unit costs
Costs distributed over individual component usage.
Utility Cost Center (UCC)
A cost center for the provision of support services to other cost centers.
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