Topic 1 Flashcards
Define Ergonomics and Human Factors
It is the science that deals with the relationship between humans and systems, products, environments and objects
What are anthropometrics
human sizes / measurements
Define Percentile Range
is that proportion of a population with a dimension at or less than a given value
Clearance is what percentile?
95th
Reach is what percentile?
5th
Adjustability and Range of sizes percentile?
5th-95th
Standard percentile?
50th
Recess percentile?
95th
What are Physiological Factors?
(abilities) Designers study Physical characteristics of users to optimize their safety, health, comfort and performance
In any question with physiological factors include…
comfort and fatigue
Psychological Factors?
Senses. SLSTTT (Smell Light Sound Taste Texture and Temperature) they are qualitative and subjective
What do Psychological Factors effect?
Comfort, efficiency, perception and alertness
Define Static Data.
Static data is data that refers to human body measurements and is taken when the subject is still (not moving)
Define Dynamic Data.
Human body measurements that are taken when the subject is in motion (performing certain tasks)
What is reach envelope
3d space a person can reach comfortably from a fixed position
Primary anthropometric data is when product is ___
custom made
Secondary anthropometric data is when product is ___
mass produced
Biomechanics?
In physiological factors include the research and analysis of the mechanics in the human body, and the stresses that can be placed on these body parts.
For biomechanics designers need to consider the elderly, ill, disabled, children. They need to decrease the effort users exert (give the users mechanical advantage) This can be done by…
Adding texture, making surface area larger…
Psycological factors play a role in…
product’s design as well as environment user is in
Human information processing system steps
- Input
- Sensory Process
- Central Process
- Motor Process
- Output
Data Scales
- Nominal
- Ordinal
- Interval
- Ratio
Nominal is…
Categorizing information by name (not numeric)
Ordinal
Data is categorized to show sequence or oder only
Interval
Numerical Scale where the oder and the exact difference between the values is known and fixed. Like temp.
Ratio
Real Zero. the same as interval but the zero is real. Like length
