ICT Infrastructure  Round Up of IS Topic
Infrastructure: ICT
Modelling: Information system
ICT: System
ICT: System: Interface Layer
ICT: System: Rules Layer
ICT: System: Data Management Layer
ICT: System: Transaction Layer
ICT: System: Distribution
ICT: System: N tier
Data: Security: Dimensions
Data: Security: Stored data
Data: Security: Transactions
Data: Security: Personal Identity management
Infrastructure: ICT: Comms: Internet
Infrastructure: ICT: Comms: Internet: History <ul><li>Wide area network </li></ul><ul><li>Funded by US department of defen...
Infrastructure: ICT: Comms: Internet: Packet switch
Infrastructure: ICT: Comms: Internet: TCP/IP
Infrastructure: ICT: Comms: Internet: IP address
Infrastructure: ICT: Comms: Internet: URL 126.203.97.54 www.cardiff.ac.uk
Infrastructure: ICT: Comms: Internet: Domain names www.cardiff.ac.uk Domain name
Infrastructure: ICT: Comms: Web
Infrastructure: ICT: Comms: Web: History
Infrastructure: ICT: Comms: Web: Components
Infrastructure: ICT: Comms: Web: Site
Infrastructure: ICT: Comms: Web: Web 2.0 <ul><li>Web-based communities </li></ul><ul><li>Collaboration </li></ul><ul><li>B...
Figure 9.1: The DeLone and McLean model DeLone and McLean performed a systematic review of available published material on...
Figure 9.2: The domains of functionality, usability and utility <ul><li>Two issues of the use of information systems and t...
Figure 9.3: The domain of use
Content, control and format <ul><li>A user interface is a  collection of dialogues   </li></ul><ul><ul><li>Each dialogue i...
Figure 9.5: Examples of questions from a  user satisfaction questionnaire <ul><li>Assessment of satisfaction with interfac...
Performance management <ul><li>Systems exhibit  control </li></ul><ul><ul><li>Enabling it to regulate itself and adapt to ...
Figure 9.7: Efficacy, efficiency and effectiveness The level of performance an organisation attains is a function of the  ...
Information systems evaluation <ul><li>Evaluation is the process of assessing the  worth  of something </li></ul><ul><li>T...
Managing IS <ul><li>Informatics Infrastructure Important </li></ul><ul><ul><li>Invest in effective practices for planning,...
Figure: The development process <ul><li>Information system development  is a socio-technical system concerned with the des...
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Week 25 presentation

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Ref: Paul Bryon-Davies

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Week 25 presentation

  1. 1. ICT Infrastructure Round Up of IS Topic
  2. 2. Infrastructure: ICT
  3. 3. Modelling: Information system
  4. 4. ICT: System
  5. 5. ICT: System: Interface Layer
  6. 6. ICT: System: Rules Layer
  7. 7. ICT: System: Data Management Layer
  8. 8. ICT: System: Transaction Layer
  9. 9. ICT: System: Distribution
  10. 10. ICT: System: N tier
  11. 11. Data: Security: Dimensions
  12. 12. Data: Security: Stored data
  13. 13. Data: Security: Transactions
  14. 14. Data: Security: Personal Identity management
  15. 15. Infrastructure: ICT: Comms: Internet
  16. 16. Infrastructure: ICT: Comms: Internet: History <ul><li>Wide area network </li></ul><ul><li>Funded by US department of defence </li></ul><ul><li>Internet protocol </li></ul><ul><li>Packet-switching </li></ul><ul><li>Routers </li></ul>
  17. 17. Infrastructure: ICT: Comms: Internet: Packet switch
  18. 18. Infrastructure: ICT: Comms: Internet: TCP/IP
  19. 19. Infrastructure: ICT: Comms: Internet: IP address
  20. 20. Infrastructure: ICT: Comms: Internet: URL 126.203.97.54 www.cardiff.ac.uk
  21. 21. Infrastructure: ICT: Comms: Internet: Domain names www.cardiff.ac.uk Domain name
  22. 22. Infrastructure: ICT: Comms: Web
  23. 23. Infrastructure: ICT: Comms: Web: History
  24. 24. Infrastructure: ICT: Comms: Web: Components
  25. 25. Infrastructure: ICT: Comms: Web: Site
  26. 26. Infrastructure: ICT: Comms: Web: Web 2.0 <ul><li>Web-based communities </li></ul><ul><li>Collaboration </li></ul><ul><li>Blogs, Wikis, Bookmarking, RSS </li></ul>
  27. 27. Figure 9.1: The DeLone and McLean model DeLone and McLean performed a systematic review of available published material on the question of the success of information systems in organisations . The DeLone and McLean model
  28. 28. Figure 9.2: The domains of functionality, usability and utility <ul><li>Two issues of the use of information systems and the impact of its use are associated with assessments as to the worth or value of an IS </li></ul><ul><li>Elements from the DeLone and McLean model can be grouped into the domains of functionality, usability and utility : </li></ul>Functionality, usability and utility
  29. 29. Figure 9.3: The domain of use
  30. 30. Content, control and format <ul><li>A user interface is a collection of dialogues </li></ul><ul><ul><li>Each dialogue is made up of a series of messages between the user and the ICT system </li></ul></ul><ul><li>The user interface is the technology supporting man-machine communication </li></ul><ul><li>There are three major </li></ul><ul><li>aspects of this dialogue: </li></ul><ul><ul><li>Content </li></ul></ul><ul><ul><li>Control </li></ul></ul><ul><ul><li>Format </li></ul></ul>Figure 9.4: Format, content and control
  31. 31. Figure 9.5: Examples of questions from a user satisfaction questionnaire <ul><li>Assessment of satisfaction with interfaces is often measured using questionnaires made up of a series of attitude questions </li></ul><ul><li>Questionnaire for User Interface Satisfaction (QUIS) is a popular approach and consists of 27 items using a nine-point Likert scale </li></ul><ul><li>This is an example of a series of questions from this type of user interface satisfaction questionnaire </li></ul>
  32. 32. Performance management <ul><li>Systems exhibit control </li></ul><ul><ul><li>Enabling it to regulate itself and adapt to changes in its environment </li></ul></ul><ul><li>Control is a type of monitoring subsystem that controls the behaviour of other subsystems </li></ul><ul><ul><li>Compares their behaviour to defined levels of performance, and acts </li></ul></ul><ul><li>This issue of control is called performance management </li></ul><ul><ul><li>The process of measuring past action </li></ul></ul><ul><li>Performance in systems has three main types of measures: </li></ul><ul><ul><li>Efficacy </li></ul></ul><ul><ul><li>Efficiency </li></ul></ul><ul><ul><li>Effectiveness </li></ul></ul>
  33. 33. Figure 9.7: Efficacy, efficiency and effectiveness The level of performance an organisation attains is a function of the efficacy, efficiency and effectiveness of the actions it has undertaken.
  34. 34. Information systems evaluation <ul><li>Evaluation is the process of assessing the worth of something </li></ul><ul><li>The figure on the next slide presents a model of information systems evaluation fitted to the life-cycle of IS development </li></ul><ul><ul><li>Illustrates the importance of evaluation to processes of organisational learning </li></ul></ul><ul><ul><li>Distinguishes between four types of information systems evaluation activity: </li></ul></ul><ul><ul><ul><li>Strategic evaluation </li></ul></ul></ul><ul><ul><ul><li>Formative evaluation </li></ul></ul></ul><ul><ul><ul><li>Summative evaluation </li></ul></ul></ul><ul><ul><ul><li>Post-mortem evaluation </li></ul></ul></ul>
  35. 35. Managing IS <ul><li>Informatics Infrastructure Important </li></ul><ul><ul><li>Invest in effective practices for planning, managing, developing and operating it </li></ul></ul><ul><li>Key Areas: </li></ul><ul><ul><li>Informatics Planning </li></ul></ul><ul><ul><li>Informatics Strategy </li></ul></ul><ul><ul><li>Informatics Management </li></ul></ul><ul><ul><li>Project Management </li></ul></ul><ul><ul><li>Informatics Industry </li></ul></ul><ul><ul><li>Informatics Service </li></ul></ul><ul><ul><li>Operating the ICT infrastructure </li></ul></ul><ul><ul><li>Development Life-cycle </li></ul></ul><ul><ul><li>Development Methods, Techniques and Tools </li></ul></ul>
  36. 36. Figure: The development process <ul><li>Information system development is a socio-technical system concerned with the design, construction, implementation and maintenance of key aspects of the informatics infrastructure for an organisation </li></ul><ul><li>This critical activity system for modern business is shown in the figure </li></ul>Developing IS

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