human factors issues n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Human Factors Issues PowerPoint Presentation
Download Presentation
Human Factors Issues

Loading in 2 Seconds...

play fullscreen
1 / 21

Human Factors Issues - PowerPoint PPT Presentation


  • 93 Views
  • Uploaded on

Human Factors Issues. Chapter 8. What is Human Factors?. Application of the scientific knowledge of human capabilities and limitations to the design of systems and equipment to produce products with the most efficient, safe, effective, and reliable operation. Human Factors. Interface points

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Human Factors Issues' - sheldon


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
what is human factors
What is Human Factors?
  • Application of the scientific knowledge of human capabilities and limitations to the design of systems and equipment to produce products with the most efficient, safe, effective, and reliable operation
human factors
Human Factors
  • Interface points
  • Environment
  • Skill level of user
  • Interaction between:
    • Human element
    • Hardware element
    • Software element

Refrigerator Example

human element
Human Element
  • Memory
    • Long term
    • Short term
  • Thinking and reasoning
  • Visual perception
  • Dialogue construction
  • Individual skill level
  • Individual sophistication
slide6

Size

limitations

Location of controls

Possible user training

Compatibility with other equipment

Hardware Element

Control knobs/switches

Potential need for portability

Display area

slide7

Simple, reliable data entry

Displays must not be overcrowded

Software Element

Feedback to users

Menu driven

Dialogue must be jargon-free

human factors process
Human Factors Process
  • Analytic process that focuses on device objectives
  • Design and development process that converts results of analyses into detailed equipment features
  • Test and evaluation process which verifies that development process satisfies constraints
steps in human factors process
Steps in Human Factors Process
  • Planning
  • Analysis
  • Conduct user studies
    • Observations
    • Interviews
    • Focus groups
    • Task analysis
    • Benchmark usability tests
    • User profile
    • Setup advisory panel

Crucial Pieces of Human Factors Process

safety
Safety
  • Should reflect system and personnel safety factors
  • Failures
    • Fail safe
    • Failure indications
  • Standards- ANSI, AAMI, ISO
documentation
Documentation
  • Written to meet needs of various target populations
  • Study capability and information needs of documentation users
    • Mental abilities
    • Physical abilities
    • Previous experience
    • Understanding of general operation
    • Special needs of environment

Attempt to avoid this!

anthropometry
Anthropometry
  • Science of measuring human body and its parts and functional capacities
  • Range of values: 5th percentile female to 95th percentile male
  • Functional dimensions
  • Psychological elements
  • Workstation design considerations
labeling
Labeling
  • Labels should be clear and direct
  • Controls, displays, and other equipment that must be located should be clearly marked
  • Receptacles and connectors should be marked with intended function or connection
  • Hazard warnings should be prominent
software
Software
  • Every user input should consistently produce some perceptible response from the computer
  • Log-on should be automatically completed before any operation
  • Allow for orderly shutdown in case of failure
data entry
Data Entry
  • Consistent data entry transactions
  • Minimize user input actions
  • Feedback to user about acceptance or rejection of an entry
  • Ability to change entry after it has been added
feedback
Feedback
  • Present status, information, confirmation, and verification throughout the interaction
  • Standby should be accompanied by ‘WAIT’ message
  • Feedback should be self-explanatory
prompts
Prompts
  • Commands, error messages, system capabilities, and procedures should be explained with prompts or help instructions
  • Missing data/aborting changes should be prompted
  • Factual and informative dialogue
  • Displayed in standardized area
defaults
Defaults
  • Currently defined default values should be provides and automatically displayed
  • User should be prompted for acceptance of defaults
  • Users should be able to set their own default