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Operations analysis. Location analysis. Location of One Item Example: Locating printer, scanner, & copier station in a department. Systematic Layout of Multiple Items See pp. 90-93. B. 2. 1. 4. 3. 5. A. Pareto Analysis: ‘Fight the Giants’.

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location analysis
Location analysis
  • Location of One Item
    • Example: Locating printer, scanner, & copier station in a department.
  • Systematic Layout of Multiple Items
    • See pp. 90-93

B

2

1

4

3

5

A

pareto analysis fight the giants
Pareto Analysis: ‘Fight the Giants’
  • Concept – bulk of the problems (opportunities) are concentrated in a few items
    • “Fight the Giants”
  • Example: causes of long wait times at a health clinic
process analysis
Process analysis
  • Overview of the process
  • Identify opportunities for improvement
  • Useful communication tool
  • Major types
    • Process chart
      • single object / person (Ergo)
      • assembly process
      • multi-activity chart (Ergo)
    • Flow diagram (Ergo, Visio)
    • Fish (Ishikawa) diagram (Visio)
    • Decision structure table
process chart
Process chart
  • Symbology
  • Details
    • time, distance
    • SEARCH
    • notes
  • Documentation
  • Example – preparing a form letter for mailing
    • see next page
flow diagram
Flow diagram
  • Usually combined with process chart to visualize physical space.
  • Example: Preparation and gathering for a design team meeting. (See next page.)
other process charts
Other process charts
  • Assembly process charts
    • show relationships among components, how several processes interact
    • useful for methods analysis
    • identify delays, storage problems
    • example, pg. 97
  • Multi-activity chart ‘gang chart’, ‘man-machine’ chart, ‘left-hand right hand’ chart
    • common, scaled time axis
      • identify idle time, unbalanced operations
      • opportunities for
        • job sharing
        • double tooling
        • kitting
    • examples, pg. 99
fish diagrams
Fish diagrams
  • aka, Ishikawa diagram, Cause & Effect diagram
  • Useful for brainstorming, identify opportunities to improve
  • ‘Head’ of the fish is the problem or desired effect
  • ‘Skeleton’ identifies potential causes
    • 4 M’s – manpower, machines, methods, materials
    • 4 P’s – policies, procedures, people, plant
example
Example
  • Improve design team meeting productivity
subjective evaluation14
Subjective evaluation
  • Body discomfort map
    • Body portions
body discomfort scales
Body discomfort scales
  • Discomfort scale
  • Borg
  • Category partitioning
    • See table 6.9, pg. 102
relative and absolute scales
Relative and absolute scales
  • Semantic differential (absolute scale)
    • Rate aspects of the workspace, methods, etc. on a scale between 2 opposite adjectives,
    • e.g.

comfortable ___ : ___ : ___ : ___ : ___ : ___ : ___ uncomfortable

spacious ___ : ___ : ___ : ___ : ___ : ___ : ___ cramped

  • Alternatively, choose one adjective (acceptable, comfortable, etc.) and evaluate several aspects of the workplace, methods, etc. on that one objective
    • e.g., acceptability, comfort, etc.
relative and absolute scales17
Relative and absolute scales
  • Paired votes (relative)
    • Compare two alternatives on a relative ranking scale,
    • e.g.,

Prefer notes using Sympodium (A) or SmartBoard (B)

Indicate degree of preference

related concepts
Related concepts
  • Evolutionary Operation of Processes (EVOP)
    • Designed series of experiments to evaluate the effects on the output of the process of changing specific variables
    • Key idea is to make changes while the process is active (i.e., not as a separate experiment)
    • Substitute number of runs for strict control
  • Project scheduling
    • CPM
    • PERT