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Garbage Truck Answers

posted Sep 20, 2011, 6:10 PM by Unknown user   [ updated Sep 21, 2011, 9:41 PM by Eddie Woo ]
1. The article mentions a feasibility study. Imagine if you were the head of the company commissioned to conduct and write the feasibility study. With reference to the article, outline the
key parts of your study and give a brief summary of each of the four feasibilities and how each would relate to the article (6 marks)
Marking CriteriaMarks
Displays understanding of how the feasibilities relate to a new system and the factors which must be considered in each feasibility for development of a new system6
Displays adequate understanding of a feasibility study. Displays acceptable overall understanding of the feasibilities, but answer lacks depth required in a real feasibility report.4-5
Structure of feasibility report has fundamental flaws. Description of feasibilities lacks detail or depth and may or may not relate to this situation in particular.2-3
Shows a fundamental lack of understanding of how feasibilities apply to a new system and how they may be analysed with a feasibility report.0-1

Sample answer
  • Technical
    • Need to obtain new state-of-the-art garbage collection equipment
    • Will need operators which understand how the technology works
    • Already used in other countries, so the proposed system will work in real life
    • Will require constant upgrading/maintenance to prevent against damage from constant use and passing through of garbage
    • General public must be acquainted with how the technology works
  • Schedule
    • ‘2030 plan to make Sydney more sustainable’ - plenty of time to allow for obtainment of the necessary parts for the system, and to retrain/reskill garbage-men which will go out of a job once the new system is in place, so schedule is a minimal issue at this time
  • Operational
    • Current garbage-men might not support the system because they may lose their jobs
    • New system will fit in naturally with the plans to make Sydney greener by 2030
    • Can hire overseas operators to train local operators in keeping the system up and running
    • Minimal change to habits of general public
  • Economic
    • Need lots of money to purchase the new pipes and collection equipment which will be required for the new system
    • Need money to train and pay the technical staff required to maintain the system
    • Long-term savings in money (compared to paying a fleet of garbage collectors, paying technical staff to maintain the system is minimal)
    • Long-term savings in pollution (landfill) improved public amenity (less smell, better looking without bins etc.)

2.  Describe how you would implement this new system (4 marks)
Marking CriteriaMarks
Displays thorough understanding of the processes involved in implementation of a new system.4
Displays adequate understanding of how system implementation should be carried out but answer does not have the depth required for a real system implementation2-3
Displays poor understanding of the implementation stage of the system development life cycle0-1

Sample solution
  • POSSIBLE ANSWER: Phased conversion
    • The system would be introduced to different sections of the city over time
    • The results of the implementation for the first sections of the city would be used to improve the results of the later stages
    • Advantage that it allows people to get accustomed to the system, and if it doesn’t work then no amount of excessive time or effort is wasted on the new system
    • Allows time to retrain garbage collectors which may be out of job (different sections of the garbage collection fleet would be put out of a job, so allows time for retraining/reskilling)
    • May be confusing for some people due to different sections of the city on different waste disposal methods
  • POSSIBLE ANSWER: Pilot conversion
    • The pipes would be inserted into one small section of the city
    • The effectiveness of this would be evaluated and then used to determine whether it is worth implementing over the entire city
      • People who want the system most are allowed to trial it, their feedback can be used
    • The entire system would then be implemented based on these results (i.e. cost, benefits to sorrounding areas, etc.)

3. Describe the role of a prototype and how it would affect the development of this new system (4 marks)
Marking CriteriaMarks
Shows clear understanding of the purpose of the prototype in system development. Justifies the time/cost required to develop a prototype and its benefits, relates to this system4
Shows adequate understanding but answer lacks detail in describing its effects and or its role in system development. Answer may or may not relate well to the mentioned system2-3
Shows poor understanding of the role of a prototype and how it may be used to develop a new system0-1

Sample Answer
  • Prototype - a working model of a system
  • Built in order to understand system requirements
  • Can help in defining problem to be solved, and how the system may solve it
  • Participants actively use prototype to identify good or bad features of the new system
  • Normally a successive series of models which increased in detail and scale
  • Participants better understand new system with using a prototype (in this case, general public can be acquainted with the goals of the project such as urban renewal, reduction in pollution and noise etc.)
  • Participants involved earlier and more directly - feedback can be used and this may result in fewer changes in the testing/evaluating/maintaining stage
  • New system easier to create from a prototype