Configuration Management
| Decision Analysis | Feasibility Study | Human Factors Engineering | Interface| Need
Analysis | Organizational Structure
| Project Management | Prototype | Quality
Control | Requirement | Stakeholders | System | Systems Engineering | System Integration | System Lifecycle | Validation | The Vee
Model | Verification|
Configuration Management - Configuration management is a process to control and document any changes made during the life of a project. Configuration management provides:
Appropriate levels of review and approval for changes
Focal points for those seeking to make changes
A simple point of input to contracting
representatives in the customer and contractors office for approved changes. (Kerzner,
1995)
Decision Analysis - Decision
analysis is a structured approach to making decisions. Decision analysis provides a set of
methods and strategies to help organize your thinking about decision situations and base
your decisions on a solid foundation of clear thinking. The framework of decision analysis
can be summarized succinctly by a simple acronym: effective decision makers follow the
GOOD-D process (Laskey and Drake, 1997). They understand the Goal of the decision,
generate a comprehensive set of Options, and predict the likely Outcomes if each option is
chosen. Then they integrate this information to Decide which of the options is best.
Finally they Do it! Effective decision makers think carefully about their decision and
then are decisive about implementing the course of action the decide is best.
Feasibility Study - A
feasibility study is a way to determine if there are workable real solutions to a problem.
"In system development, a study to identify and analyze a problem and its potential
solutions in order to determine its viability, costs, and benefits." (IBM, 1987)
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Human Factors
Engineering - Human Factors Engineering is the branch of engineering devoted to the
consideration of human and system interaction. Human Factors Engineering deals with mental
and physical needs, capabilities, and expectations of the user.
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Interface - "An interface is a
boundary shared by interacting components in a system." (Bailey, 1996)
Need Analysis - "The system
cycle and the system engineering process begin with the identification of a need based on
a want or desire for something arising from a deficiency (perceived or real)."
(Blanchard & Fabrycky, 1990)
Organizational Structure -
A major aspect of system engineering management is that of organizing and staffing.
Organization...consists of (1) determining what activities need to be accomplished; (2)
grouping the identified activities in term of a functionally - oriented structure of some
type (unit, group, department, division, section); and (3) staffing the structure with the
appropriate personnel skills to perform the designated activities in a coordinated
manner." (Blanchard & Fabrycky, 1990)
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Project Management -
"Project management provides [a means] to plan, organize, implement, and control
[project] activities, resources and people." (Meredith, 1989)
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Prototype - "A prototype is a
model suitable for the evaluation of system design, performance, and production
potential." (IBM, 1987)
Quality Control - Quality
control is the management concept where higher quality, lower cost, and more rapid
development are keys for improving the quality-cost characteristics of products,
processes, and services. Just designing to meet specifications is not sufficient. Quality
losses begin to accumulate whenever a product parameter deviates from its normal or
optimal value and it is recognized that quality must be designed into products and
processes. (Blanchard and Fabrycky, 1990)
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Requirement - A requirement is a
criterion that a system must meet. Requirements can include things the system must do,
characteristics it must have, and levels of performance it must attain. Systems engineers
develop requirements before a systems is created. As it is developed, the system is
evaluated according to how well it meets its requirements.
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Stakeholders - The stakeholders
are a group of people for whom a system is being built. Stakeholders include users,
owners, manufacturers, maintainers, trainers etc. (Buede, 1996)
System - A system is
a set of components organized to satisfy specified objectives. These components may
include hardware, software, people, and facilities.
Systems Engineering- Systems engineering is the process of defining, developing and integrating quality systems. Examples of systems are a car, a stereo, the metro, and George Mason University. Whereas other engineering disciplines concentrate on individual aspects of a system (electronics, ergonomics, software, etc.), systems engineers focus on the system as a whole. Systems engineers work with stakeholders to define what the system must do and how well it must do it, analyze cost and performance, and manage the development of the system. (GMU, 1997)
System Integration -
"System integration is the process through which a number of products and services .
. . are specified and assembled into a complete system that will achieve the intended
functionality." (Sage, 1992)
System Lifecycle - "A
systems engineering life cycle prescribes a number of phases that should be followed,
often in an interactive and iterative manner in order successfully to produce and field a
large-scale system that meets user requirements." (Sage, 1992)
Validation - Validation answers the
question Did we build the right product? "From a purposeful perspective, a system
must be tested to determine whether it does what the client really wishes it to do."
(Sage, 1992)
The Vee Model - The Vee Model
addresses the technical aspect of the project cycle and represents the sequence of project
events. The left side of the Vee [is] a representation of the evolution of user
requirements into parts and lines of code through the process of decomposition and
definition. The downward iterations include engineering studies, requirements
understanding modeling, feasibility demonstrations, and with-if analysis, and descend to
the level of the system under investigation such as subsystem or piece parts as examples.
The right side of the Vee represents the integration and verification of the system
components into successive levels of assembly. The upward iterations ensure that the
technical baseline, as it evolves, continues to be satisfactory to the user. (Forsberg,
1992, 1995)
Verification - Verification
answers the question Did we build the product right? "System verification is the
activity of comparing the product produced at the output of each phase of the life cycle
with the product produced at the output of the preceding phase." (Sage, 1992)
Bailey, R. W. (1996) HUMAN PERFORMANCE ENGINEERING: DESIGNING HIGH QUALITY, NJ:
Prentice-Hall, Inc.
Blanchard, B.S., Fabrycky, W. J. (1990) SYSTEMS ENGINEERING AND ANALYSIS 2ND Edition,
Englewood Cliffs, NJ: Prentice-Hall, Inc.
Buede, D. M. (1995) SYSTEMS ENGINEERING DESIGN AND INTEGRATION, Fairfax, VA: Systems
Engineering Department, George Mason University.
Forsberg K., & Mooz, H., THE RELATIONSHIP OF SYSTEMS ENGINEERING TO THE PROJECT CYCLE,
Engineering Management Journal, Vol. 4, No. 3 September 1992, pp. 36-43.
Forsberg, K., IF I COULD DO THAT, THEN I COULD, Proceedings of the National Council for
System Engineering (NCOSE) Conference, St. Louis, MO, July 1995.
Forsberg, K., and H. Mooz, APPLICATION OF THE "VEE" TO INCREMENTAL AND
EVOLUTIONARY DEVELOPMENT, Proceedings of the National Council for System Engineering
(NCOSE) Conference, St. Louis, MO, July 1995.
George Mason University, Bachelor of Science in Systems Engineering Program Description,
Fairfax, VA: Department of Systems Engineering, George Mason University, 1997.
IBM Corporation (1987) IBM DICTIONARY OF COMPUTING, New York: IBM Corp.
Kerzner, Harold (1995) PROJECT MANAGEMENT , New York, NY: International Thompson
Publishers, Inc.
Laskey, K.B. and Drake, J. GOOD-D: Lessons for an Interactive Course in Decision Making,
Fairfax, VA: Department of Systems Engineering, George Mason University, 1997.
Meredith, J. R., & Mantel, S. J. Jr., (1989) PROJECT MANAGEMENT: A MANAGERIAL
APPROACH. New York: John Wiley & Sons.
Sage, A.P., (1992) SYSTEMS ENGINEERING. New York, NY: John Wiley & Sons, Inc.