System Life Cycle

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System Life Cycle
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Goals

• Understand the major phases of the system life
  cycle
• Be able to prepare an operational need statement
• Be able to create an operational concept statement

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Operational Need Determination

• Example of an Operational-Need Document
• The Fourth National Bank and Trust co.
• existing and Planned Operational Capabilities
• additional Operation Capability Required
• exploitable Technology
• constraints
• user Classes

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Operational Concept Formulation

• Example of an Operational Concept that satisfies
  the Operational Need for Automated Bank Tellers
• bank Customer Transaction Concept
• allowable Bank Customer Transactions
• allowable Number of Transactions
• logistics and Maintenance Concept
• management Concept
• training Concept

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Concept Exploration

• Major HF activities during concept exploration
• assist in allocation of functions
• conduct trade studies to evaluate costs and
  benefits of alternatives
• develop user-system interface requirements
• prototype and evaluate user interfaces

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Universal Access to ATM

• http//www.sun.com/access/wp-aatm/
• Japanese Tourist Visiting Canada
• Spanish Businessman with Low Vision
• Blind Student Making a Deposit

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(No Transcript)
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Smart Card with User Profile
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Concept Demonstration

• Design concept is mocked up, simulated and
  tested.
• Does it meet
• requirements for staffing, operating,
  maintaining, and supporting the system?
• dimensional requirements for workspace, etc.,
• safety, personnel and training requirements

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Full Scale Engineering Development

• Full prototype is developed and tested.
• Prototype includes all necessary hardware and
  software
• Major HF tasks
• Usability testing with product and documentation
• Reference of testing results to performance
  requirements

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Production and Deployment

• Multiple copies of system are produced and
  distributed
• Major HF tasks
• training operators and users on system
• evaluating usability or operability of system
• identifying changes to be made for later versions

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Operation and Maintenance

• Systems delivered and in use
• Major HF tasks
• conduct follow-on tests of operator satisfaction
  with use and maintenance of system
• results of tests serve as guides to engineering
  changes for subsequent versions

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System Retirement

• In this phase the system is retired from use,
  scrapped or replaced
• Concerns about environmental conversation and
  recycling of materials
• Ease and expense of disposal should be considered
  during system design

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Life Cycle Control Points

• There are control points throughout the system
  lifecycle
• Control points are milestones times at which
  evaluations are made
• Evaluations consist of reviews and audits
• System engineer describes what has been done and
  defends activities

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Questions asked at Control Points

• Is the work - to date- satisfactory?
• Do any changes need to be made in the
  development?
• Are the budgets and timetables for completion
  realistic?

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Exam

• Exams will be Closed book, closed notes
• Because, dont want people copying from the text
  book and their notes to give the answers and then
  telling me the answer must be right because it
  was in the book!
• You will be expected to study the material and
  know it.

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Project

• Ergonomic Design of an In-Car E-mail system.
• Functionality?
• Evaluative criteria (safety, performance, etc.)
• How will you prototype/test your design?
• Start by checking out relevant literature and the
  state of the art.

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Hands Free Computer Interfaces

• In many situations where keyboard input is
  impractical and visual displays are restricted or
  unavailable, speech provides the only way of
  interacting with a computer.
  
• surgeons and other medical staff can use speech
  dictation to enter reports when their hands are
  busy and where touching a keyboard represents a
  hygiene risk.
• In vehicle and airline maintenance, warehousing
  and many other hands-busy tasks