
106 The Method Framework for Engineering System Architectures
R1-83: the system shall use user names and pass phrases for user identification and •
authentication.*
R1-93: the system shall use a COTS system for encryption and decryption.•
R1-123: the system shall be implemented in a safe subset of C++.•
Functional concern: N
Subsystem X sensors and sensor fusion: − the set of all architecturally significant sub-
system X requirements that specify functional requirements related to sensors and sensor
fusion — R5-13, R5-14, R5-15, R5-18, R5-21, and R5-23.
Process concern: N
Cost − : the set of all architecturally significant system or subsystem proce ...