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user centeredness_info systems

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  • 1. User Centeredness & Information Systems Cheryl T. Roldan, MLIS User-Centered Information Systems Development (MALIT 214) August 28, 2010
  • 2. Learning Outcomes
    • Be able to define a ‘system”
    • Be able to describe the role of information systems in organizations
    • Be able to state the role of the “user” in an information system
    • Become familiar with the SLU information systems
  • 3. What is an "information system"?
    • 1. An  information system  combines information technology, people and data to support business requirements. The five key components are hardware, software, data, processes and  people .
    • 2. A system, whether automated or manual, that comprises people, machines, and/or methods organized to collect, process, transmit, and disseminate data that represent user information.
    • 3. Any telecommunications and/or computer related equipment or interconnected system or subsystems of equipment that is used in the acquisition, storage, manipulation, management, movement, control, display, switching, interchange, transmission, or reception of voice and/or data, and includes software, firmware, and hardware.
    • 4. The entire infrastructure, organization, personnel, and components for the collection, processing, storage, transmission, display, dissemination, and disposition of information. [INFOSEC-99] [ Available at: http://www.atis.org/tg2k/_information_system.html ]
    • 5. The most important part of an information system is the  people . The hardware, software, data and processes are all secondary items that together, facilitate the effective manipulation of information.
  • 4.
    • Watch videos ......
  • 5. An information system is really about people and information not computers
    • A computer, a telephone, a fax machine, a television - think of any machine and you will realise that it is pretty useless without people around to use it. That is why we are all referred to in the information systems world as " users ".
  • 6. User-Centredness
    • productive and happy at work and play
    • If they do what we want them to do effectively and efficiently
    • User satisfaction
    • Involving users and actively seeking their requirements is called user-centred design.
  • 7. What is User-Centredness ?
    • User-centredness is a measure of how well the tool, process, application, device, is suited to its user.
  • 8.
    • Satisfying the Cat:
    • (User Centered Design)
    • Youtube video
  • 9. What is a "system"?
    • A  system  is a set of related components that produces specific results [Shelly, Cashman, Rosenblatt, p5]
    • Any organized assembly of resources and procedures united and regulated by interaction or interdependence to accomplish a set of specific functions .
    • A collection of personnel, equipment, and methods organized to accomplish a set of specific functions.
    • [ Available at:  http://www.atis.org/tg2k/_system.html  ]
  • 10.
    • The organization between the parts of a system to reach their common goal is achieved through extensive  communication . You could say that it was achieved through a communication system - maybe even an "information system"
  • 11. Who Develops Information Systems?
      • In-house applications
      • Software packages
      • Internet-based application services
      • Outsourcing
      • Custom solutions
      • Enterprise-wide software strategies
      • How versus What
  • 12. Information System Components
    • A system is a set of related components that produces specific results
    • A mission-critical system is one that is vital to a company’s operations
  • 13. Information System Components
    • Hardware
      • Moore’s Law
    • Software
      • System software
      • Network operating system
      • Application software
      • Enterprise applications
      • Horizontal system
      • Vertical system
    • Data
      • Is the raw material that an information system transforms into useful information
      • Tables
      • Linking
  • 14. Information System Components
    • Processes
      • Define the tasks and business functions that users, managers, and IT staff members perform to achieve specific results
    • People
      • Users, or end users, are the people who interact with an information system, both inside and outside the company
  • 15. Information System Users and Their Needs
    • A systems analyst must understand the company’s organizational model in order to recognize who is responsible for specific processes and decisions and to be aware of what information is required by whom
  • 16.
    • modeling, prototyping, and computer-aided systems engineering tools to plan, design, and implement information systems
    • Systems analysts work with these tools in a team environment
    Systems Development Tools and Techniques
  • 17.
    • Traditionally pictured as a waterfall model, but is also presented as an interactive model depicting real world practice and the constant dialog among users, managers, and systems developers
    The Systems Development Life Cycle
  • 18. Systems Development Guidelines
      • Planning
      • Involve users throughout the development process
      • Listening is very important
      • Create a time table with major milestones
      • Identify interim checkpoints
      • Remain flexible
      • Develop accurate cost and benefit information
  • 19. References:
    • Shelly, B.G., Cashman, T.J., Rosenblatt, H.J., "Systems Analysis And Design: Sixth Edition", Chapter 1, Thomson Course Technology
    • Schneider, G.P., Evans, J., "The Internet: 5th Edition - 2005 Update", Thomson Course Technology
    • Introduction to information systems. http://www.cit.griffith.edu.au/teaching/1004INT/mod1info.html

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