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✔✔What is the importance of having common definition and understanding regarding
SE methods and terminology? - ✔✔Promote advancement in the SE field.
✔✔What is a system according Ludwig vor Baertalanffy - ✔✔A whole consisting of
interacting parts.
✔✔What is 15288 system - ✔✔A man-made, created or utilized to provide products or
services in defined environment for the benefit of the users and other stakeholders.
✔✔The system concept is... - ✔✔A shared mental representation.
✔✔How do ISO/IEC/IEEE and INCOSE look to the systems? - ✔✔As a purpose whole
consisting of interacting parts.
✔✔What views do we have? - ✔✔1- Internal,
2- External,
3- Block box,
4- White box.
✔✔What does the external view introduces? - ✔✔The system context (operating
environment).
✔✔What is the system context? - ✔✔Elements that interact with the system but does
not belong to it.
✔✔What an example of system context? - ✔✔The users.
✔✔What does both internal and external views introduce? - ✔✔System boundary.
✔✔What is the system boundary? - ✔✔A demarcation line between the system and its
context.
✔✔What does the system boundary define? - ✔✔What belong to the system and what
does not.
✔✔What is the system functionality? - ✔✔The system interaction with its operating
environment.
✔✔What is the system architecture? - ✔✔The fundamental concepts or properties of a
system in its environment embodied in its element, relationships, and in the principle of
its design and evolution.
,✔✔What is a system attribute? - ✔✔An observable characteristic or property of the
system.
✔✔What is an attribute variable? - ✔✔A symbolic identification of an attribute.
✔✔Is every variable measurable? - ✔✔No, its domain might not be measurable.
✔✔What is the measurement? - ✔✔The output of the interaction process between the
SOI and the observation system under specific condition.
✔✔What is the measurement final outcome? - ✔✔A value being assigned to variable.
✔✔What is the attribute state? - ✔✔Its variable value that is steady or constant for a
meaningful period of time.
✔✔What is a system process? - ✔✔A set of interrelated and interacting activities that
transform input into output.
✔✔What is the process state? - ✔✔binary values:
1- idle,
2- executed.
✔✔What is system state? - ✔✔The collection of both attributes states and processes
states.
✔✔What is dynamic behaviour? - ✔✔System state evolution over time.
✔✔What is emergent behaviour? - ✔✔Behaviour that cannot be understood exclusively
in terms of its element behaviour.
✔✔What is black box view? - ✔✔A representation based on the system attributes
(external view).
✔✔What is white box view? - ✔✔A representation based on attributes and structure
(internal view).
✔✔A system element can be...? - ✔✔1- Atomic,
2- System on its own merit.
✔✔What is the optimum level or details in system decomposition necessary for defining
the elements and their interaction? - ✔✔The level when a black box representation is
enough to capture its requirements and specify a real world solution.
, ✔✔What are decision can be taken on an atomic element? - ✔✔1- Buy,
2- Reuse,
3- Make.
✔✔What is the hierarchy concept? - ✔✔The organization of systems structure using
partitioning relation, in which each element can be implemented to fulfill a respective
specified requirement.
✔✔What is Urwik heuristic about partitioning? - ✔✔5-9 subordinate elements.
✔✔What define the:
1- Elements nomenclature,
2- Hierarchy depth? - ✔✔Both::
1- Community of interest,
2- System complexity.
✔✔What is SOI? - ✔✔A system whose life cycle is under consideration.
✔✔What is SoS? - ✔✔A system whose its element are system.
✔✔What is the SoS characteristics - ✔✔1- Operational independence,
2- Managerial independence,
3- Geographical distribution,
4- Emergent behaviour.,
5- Evolutionary development process
✔✔What is the difference between complicated and complex systems? -
✔✔Complicated has a fixed interactions between its part, leading to reliable prediction
of time, cost, and technical issues.
Complex has self-organizing interaction, leading to nonlocal, novel, emergent patterns.
✔✔How to understand a complicated system? - ✔✔Through understanding its part then
understanding the whole.
✔✔How to understand a complex system? - ✔✔Through balance application of:
1- linear procedural "systematic activity",
2- holistic nonlinear iterative "systems thinking".
✔✔What is SoS challenges? - ✔✔1- Authorities: every constituent has it local
stakeholders, business models, operations, and development approaches.
2- Leadership: Lack of common authority and funding.
3- Constituent systems perspective: limited support to SoS
4- Capabilities and requirements: a gap between the constituents capability and SoS
requirements.