User Experience Design Ontology: User Characteristics

This part of the User Experience Design Ontology defines characteristics of the user that can influence the quality of the interactive experience.

Author(s): Coomans, Marc
Publisher: Agfa Healthcare

Introduction

The URI of this ontology is: http://www.agfa.com/w3c/2009/uxd-1-0-user/. In the remainder of this document, we will assume that you import this vocabulary in your own document by associating the prefex "ux-u" with the above URI: xmlns:ux-e="http://www.agfa.com/w3c/2009/uxd-1-0-user#". The concepts of this vocabulary can then be referenced with CURIEs (compact URIs) of the form ux-u:{resource name}.

Base classes:

• User Characteristic is the RDF supper class for all user characteristics that are defined in this ontology. The CURI is (ux-u:UserCharacteristic)

Capability Related Characteristics

Visual Acuity Category (ux-u:VisualAcuityCat)

Visual acuity values:

• 1Blind (ux-u:Blind)
• 2Partially sighted: severe reduction, seeing less than 1/3 of what is considered normal visual acuity. (ux-u:PartiallySighted)
• 3Reduced visual acuity (ux-u:ReducedVisualAcuity)
• 4Normal visual acuity (ux-u:NormalVisualAcuity)

Color vision (ux-u:ColorVision)

Color vision values:

• Normal color vision (ux-u:NormalColorVision)
• Red-green color blindness(ux-u:RedGreenColorBlindness)
  Those with protanopia, deuteranopia, protanomaly, and deuteranomaly have difficulty with discriminating red and green hues.
• Blue-yellow color blindness(ux-u:BlueYellowColorBlindness>
  Those with tritanopia and Tritanomaly have difficulty with discriminating blue and yellow hues.
• Protanomaly(ux-u:Protanomaly)
  (1% of males, 0.01% of females) Protanomalous individuals are less sensitive to red light than normal. This means that they are less able to discriminate colors, and they do not see mixed lights as having the same colors as normal observers. They also suffer from a darkening of the red end of the spectrum. This causes reds to reduce in intensity to the point where they can be mistaken for black. Protanomaly is a fairly rare form of color blindness, making up about 1% of the male population.
• Deuteranomaly(ux-u:Deuteranomaly)
  (most common, 6% of males, 0.4% of females) Deuteranomalous individuals Having a mutated form of the medium-wavelength (green) pigment. The medium-wavelength pigment is shifted towards the red end of the spectrum resulting in a reduction in sensitivity to the green area of the spectrum. Unlike protanomaly the intensity of colors is unchanged. This is the most common form of color blindness, making up about 6% of the male population. The deuteranomalous person is considered "green weak". For example, in the evening, dark green cars appear to be black to Deuteranomalous people. Similar to the protanomates, deuteranomates are poor at discriminating small differences in hues in the red, orange, yellow, green region of the spectrum. They make errors in the naming of hues in this region because the hues appear somewhat shifted towards red. One very important difference between deuteranomalous individuals and protanomalous individuals is deuteranomalous individuals do not have the loss of "brightness" problem.
• Tritanomaly(ux-u:Tritanomaly)
  (equally rare for males and females [0.01% for both] Having a mutated form of the short-wavelength (blue) pigment. The short-wavelength pigment is shifted towards the green area of the spectrum. This is the rarest form of anomalous trichromacy color blindness.

Device Usage Characteristics

Posture

Posture (ux-u:Posture)

Posture values:

• Seated (ux-u:Seated)
• Standing (ux-u:Standing)
• Walking (ux-u:Walking)

Reading Distance Category

Reading Distance Category(ux-u:ReadingDistanceCat):
The average distance between the user's eyes and the screen.

Eye-screen distance values:

• 4Reading distance of about 40cm(ux-u:ReadingDistanceAbout40cm)
  The typical reading distance for handheld devices.
• 5Reading distance of about 50cm(ux-u:ReadingDistanceAbout50cm)
  The typical reading distance for seated use of a desktop or laptop computer on a desk.
• 6Reading distance of about 60cm(ux-u:ReadingDistanceAbout60cm)
  The reading distance that is typical for the standing use of a computer or kiosk, as well as for seated use of interactive desks (i.e. MS Surface).
• 8Reading distance of about 80cm(ux-u:ReadingDistanceAbout80cm)
  The reading distance that is typical for seated use of computers with 3 or more large monitors (i.e.radiology reading workstation).
• 30Reading distance of about 3m(ux-u:ReadingDistanceAbout300cm)
  A typical reading distance for video walls and electronic boards in an office setting.

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